diff options
Diffstat (limited to 'src/vnet/lisp-cp')
| -rw-r--r-- | src/vnet/lisp-cp/control.c | 4950 | ||||
| -rw-r--r-- | src/vnet/lisp-cp/control.h | 314 | ||||
| -rw-r--r-- | src/vnet/lisp-cp/gid_dictionary.c | 865 | ||||
| -rw-r--r-- | src/vnet/lisp-cp/gid_dictionary.h | 120 | ||||
| -rw-r--r-- | src/vnet/lisp-cp/lisp.api | 835 | ||||
| -rw-r--r-- | src/vnet/lisp-cp/lisp_api.c | 1257 | ||||
| -rw-r--r-- | src/vnet/lisp-cp/lisp_cp_dpo.c | 117 | ||||
| -rw-r--r-- | src/vnet/lisp-cp/lisp_cp_dpo.h | 45 | ||||
| -rw-r--r-- | src/vnet/lisp-cp/lisp_cp_messages.h | 613 | ||||
| -rw-r--r-- | src/vnet/lisp-cp/lisp_msg_serdes.c | 372 | ||||
| -rw-r--r-- | src/vnet/lisp-cp/lisp_msg_serdes.h | 58 | ||||
| -rw-r--r-- | src/vnet/lisp-cp/lisp_types.c | 1574 | ||||
| -rw-r--r-- | src/vnet/lisp-cp/lisp_types.h | 354 | ||||
| -rw-r--r-- | src/vnet/lisp-cp/packets.c | 269 | ||||
| -rw-r--r-- | src/vnet/lisp-cp/packets.h | 82 |
15 files changed, 11825 insertions, 0 deletions
diff --git a/src/vnet/lisp-cp/control.c b/src/vnet/lisp-cp/control.c new file mode 100644 index 00000000000..de048a4144a --- /dev/null +++ b/src/vnet/lisp-cp/control.c @@ -0,0 +1,4950 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <vlibmemory/api.h> +#include <vnet/lisp-cp/control.h> +#include <vnet/lisp-cp/packets.h> +#include <vnet/lisp-cp/lisp_msg_serdes.h> +#include <vnet/lisp-gpe/lisp_gpe.h> +#include <vnet/lisp-gpe/lisp_gpe_fwd_entry.h> +#include <vnet/lisp-gpe/lisp_gpe_tenant.h> +#include <vnet/fib/fib_entry.h> +#include <vnet/fib/fib_table.h> + +#include <openssl/evp.h> +#include <openssl/hmac.h> + +typedef struct +{ + u8 is_resend; + gid_address_t seid; + gid_address_t deid; + u8 smr_invoked; +} map_request_args_t; + +typedef struct +{ + u64 nonce; + u8 is_rloc_probe; + mapping_t *mappings; +} map_records_arg_t; + +static int +lisp_add_del_adjacency (lisp_cp_main_t * lcm, gid_address_t * local_eid, + gid_address_t * remote_eid, u8 is_add); + +u8 +vnet_lisp_get_map_request_mode (void) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + return lcm->map_request_mode; +} + +static u16 +auth_data_len_by_key_id (lisp_key_type_t key_id) +{ + switch (key_id) + { + case HMAC_SHA_1_96: + return SHA1_AUTH_DATA_LEN; + case HMAC_SHA_256_128: + return SHA256_AUTH_DATA_LEN; + default: + clib_warning ("unsupported key type: %d!", key_id); + return (u16) ~ 0; + } + return (u16) ~ 0; +} + +static const EVP_MD * +get_encrypt_fcn (lisp_key_type_t key_id) +{ + switch (key_id) + { + case HMAC_SHA_1_96: + return EVP_sha1 (); + case HMAC_SHA_256_128: + return EVP_sha256 (); + default: + clib_warning ("unsupported encryption key type: %d!", key_id); + break; + } + return 0; +} + +static int +queue_map_request (gid_address_t * seid, gid_address_t * deid, + u8 smr_invoked, u8 is_resend); + +ip_interface_address_t * +ip_interface_get_first_interface_address (ip_lookup_main_t * lm, + u32 sw_if_index, u8 loop) +{ + vnet_main_t *vnm = vnet_get_main (); + vnet_sw_interface_t *swif = vnet_get_sw_interface (vnm, sw_if_index); + if (loop && swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED) + sw_if_index = swif->unnumbered_sw_if_index; + u32 ia = + (vec_len ((lm)->if_address_pool_index_by_sw_if_index) > (sw_if_index)) ? + vec_elt ((lm)->if_address_pool_index_by_sw_if_index, (sw_if_index)) : + (u32) ~ 0; + return pool_elt_at_index ((lm)->if_address_pool, ia); +} + +void * +ip_interface_get_first_address (ip_lookup_main_t * lm, u32 sw_if_index, + u8 version) +{ + ip_interface_address_t *ia; + + ia = ip_interface_get_first_interface_address (lm, sw_if_index, 1); + if (!ia) + return 0; + return ip_interface_address_get_address (lm, ia); +} + +int +ip_interface_get_first_ip_address (lisp_cp_main_t * lcm, u32 sw_if_index, + u8 version, ip_address_t * result) +{ + ip_lookup_main_t *lm; + void *addr; + + lm = (version == IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main; + addr = ip_interface_get_first_address (lm, sw_if_index, version); + if (!addr) + return 0; + + ip_address_set (result, addr, version); + return 1; +} + +/** + * convert from a LISP address to a FIB prefix + */ +void +ip_address_to_fib_prefix (const ip_address_t * addr, fib_prefix_t * prefix) +{ + if (addr->version == IP4) + { + prefix->fp_len = 32; + prefix->fp_proto = FIB_PROTOCOL_IP4; + memset (&prefix->fp_addr.pad, 0, sizeof (prefix->fp_addr.pad)); + memcpy (&prefix->fp_addr.ip4, &addr->ip, sizeof (prefix->fp_addr.ip4)); + } + else + { + prefix->fp_len = 128; + prefix->fp_proto = FIB_PROTOCOL_IP6; + memcpy (&prefix->fp_addr.ip6, &addr->ip, sizeof (prefix->fp_addr.ip6)); + } +} + +/** + * convert from a LISP to a FIB prefix + */ +void +ip_prefix_to_fib_prefix (const ip_prefix_t * ip_prefix, + fib_prefix_t * fib_prefix) +{ + ip_address_to_fib_prefix (&ip_prefix->addr, fib_prefix); + fib_prefix->fp_len = ip_prefix->len; +} + +/** + * Find the sw_if_index of the interface that would be used to egress towards + * dst. + */ +u32 +ip_fib_get_egress_iface_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst) +{ + fib_node_index_t fei; + fib_prefix_t prefix; + + ip_address_to_fib_prefix (dst, &prefix); + + fei = fib_table_lookup (0, &prefix); + + return (fib_entry_get_resolving_interface (fei)); +} + +/** + * Find first IP of the interface that would be used to egress towards dst. + * Returns 1 if the address is found 0 otherwise. + */ +int +ip_fib_get_first_egress_ip_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst, + ip_address_t * result) +{ + u32 si; + ip_lookup_main_t *lm; + void *addr = 0; + u8 ipver; + + ASSERT (result != 0); + + ipver = ip_addr_version (dst); + + lm = (ipver == IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main; + si = ip_fib_get_egress_iface_for_dst (lcm, dst); + + if ((u32) ~ 0 == si) + return 0; + + /* find the first ip address */ + addr = ip_interface_get_first_address (lm, si, ipver); + if (0 == addr) + return 0; + + ip_address_set (result, addr, ipver); + return 1; +} + +static int +dp_add_del_iface (lisp_cp_main_t * lcm, u32 vni, u8 is_l2, u8 is_add) +{ + uword *dp_table; + + if (!is_l2) + { + dp_table = hash_get (lcm->table_id_by_vni, vni); + + if (!dp_table) + { + clib_warning ("vni %d not associated to a vrf!", vni); + return VNET_API_ERROR_INVALID_VALUE; + } + } + else + { + dp_table = hash_get (lcm->bd_id_by_vni, vni); + if (!dp_table) + { + clib_warning ("vni %d not associated to a bridge domain!", vni); + return VNET_API_ERROR_INVALID_VALUE; + } + } + + /* enable/disable data-plane interface */ + if (is_add) + { + if (is_l2) + lisp_gpe_tenant_l2_iface_add_or_lock (vni, dp_table[0]); + else + lisp_gpe_tenant_l3_iface_add_or_lock (vni, dp_table[0]); + } + else + { + if (is_l2) + lisp_gpe_tenant_l2_iface_unlock (vni); + else + lisp_gpe_tenant_l3_iface_unlock (vni); + } + + return 0; +} + +static void +dp_del_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index) +{ + vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a; + fwd_entry_t *fe = 0; + uword *feip = 0; + memset (a, 0, sizeof (*a)); + + feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index); + if (!feip) + return; + + fe = pool_elt_at_index (lcm->fwd_entry_pool, feip[0]); + + /* delete dp fwd entry */ + u32 sw_if_index; + a->is_add = 0; + a->locator_pairs = fe->locator_pairs; + a->vni = gid_address_vni (&fe->reid); + gid_address_copy (&a->rmt_eid, &fe->reid); + if (fe->is_src_dst) + gid_address_copy (&a->lcl_eid, &fe->leid); + + vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index); + + /* delete entry in fwd table */ + hash_unset (lcm->fwd_entry_by_mapping_index, dst_map_index); + vec_free (fe->locator_pairs); + pool_put (lcm->fwd_entry_pool, fe); +} + +/** + * Finds first remote locator with best (lowest) priority that has a local + * peer locator with an underlying route to it. + * + */ +static u32 +get_locator_pairs (lisp_cp_main_t * lcm, mapping_t * lcl_map, + mapping_t * rmt_map, locator_pair_t ** locator_pairs) +{ + u32 i, limitp = 0, li, found = 0, esi; + locator_set_t *rmt_ls, *lcl_ls; + ip_address_t _lcl_addr, *lcl_addr = &_lcl_addr; + locator_t *lp, *rmt = 0; + uword *checked = 0; + locator_pair_t pair; + + rmt_ls = + pool_elt_at_index (lcm->locator_set_pool, rmt_map->locator_set_index); + lcl_ls = + pool_elt_at_index (lcm->locator_set_pool, lcl_map->locator_set_index); + + if (!rmt_ls || vec_len (rmt_ls->locator_indices) == 0) + return 0; + + while (1) + { + rmt = 0; + + /* find unvisited remote locator with best priority */ + for (i = 0; i < vec_len (rmt_ls->locator_indices); i++) + { + if (0 != hash_get (checked, i)) + continue; + + li = vec_elt (rmt_ls->locator_indices, i); + lp = pool_elt_at_index (lcm->locator_pool, li); + + /* we don't support non-IP locators for now */ + if (gid_address_type (&lp->address) != GID_ADDR_IP_PREFIX) + continue; + + if ((found && lp->priority == limitp) + || (!found && lp->priority >= limitp)) + { + rmt = lp; + + /* don't search for locators with lower priority and don't + * check this locator again*/ + limitp = lp->priority; + hash_set (checked, i, 1); + break; + } + } + /* check if a local locator with a route to remote locator exists */ + if (rmt != 0) + { + /* find egress sw_if_index for rmt locator */ + esi = + ip_fib_get_egress_iface_for_dst (lcm, + &gid_address_ip (&rmt->address)); + if ((u32) ~ 0 == esi) + continue; + + for (i = 0; i < vec_len (lcl_ls->locator_indices); i++) + { + li = vec_elt (lcl_ls->locator_indices, i); + locator_t *sl = pool_elt_at_index (lcm->locator_pool, li); + + /* found local locator with the needed sw_if_index */ + if (sl->sw_if_index == esi) + { + /* and it has an address */ + if (0 == ip_interface_get_first_ip_address (lcm, + sl->sw_if_index, + gid_address_ip_version + (&rmt->address), + lcl_addr)) + continue; + + memset (&pair, 0, sizeof (pair)); + ip_address_copy (&pair.rmt_loc, + &gid_address_ip (&rmt->address)); + ip_address_copy (&pair.lcl_loc, lcl_addr); + pair.weight = rmt->weight; + pair.priority = rmt->priority; + vec_add1 (locator_pairs[0], pair); + found = 1; + } + } + } + else + break; + } + + hash_free (checked); + return found; +} + +static void +gid_address_sd_to_flat (gid_address_t * dst, gid_address_t * src, + fid_address_t * fid) +{ + ASSERT (GID_ADDR_SRC_DST == gid_address_type (src)); + + dst[0] = src[0]; + + switch (fid_addr_type (fid)) + { + case FID_ADDR_IP_PREF: + gid_address_type (dst) = GID_ADDR_IP_PREFIX; + gid_address_ippref (dst) = fid_addr_ippref (fid); + break; + case FID_ADDR_MAC: + gid_address_type (dst) = GID_ADDR_MAC; + mac_copy (gid_address_mac (dst), fid_addr_mac (fid)); + break; + default: + clib_warning ("Unsupported fid type %d!", fid_addr_type (fid)); + break; + } +} + +u8 +vnet_lisp_map_register_state_get (void) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + return lcm->map_registering; +} + +u8 +vnet_lisp_rloc_probe_state_get (void) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + return lcm->rloc_probing; +} + +static void +dp_add_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index) +{ + vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a; + mapping_t *src_map, *dst_map; + u32 sw_if_index; + uword *feip = 0, *dpid; + fwd_entry_t *fe; + u8 type, is_src_dst = 0; + + memset (a, 0, sizeof (*a)); + + /* remove entry if it already exists */ + feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index); + if (feip) + dp_del_fwd_entry (lcm, src_map_index, dst_map_index); + + if (lcm->lisp_pitr) + src_map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index); + else + src_map = pool_elt_at_index (lcm->mapping_pool, src_map_index); + dst_map = pool_elt_at_index (lcm->mapping_pool, dst_map_index); + + /* insert data plane forwarding entry */ + a->is_add = 1; + + if (MR_MODE_SRC_DST == lcm->map_request_mode) + { + if (GID_ADDR_SRC_DST == gid_address_type (&dst_map->eid)) + { + gid_address_sd_to_flat (&a->rmt_eid, &dst_map->eid, + &gid_address_sd_dst (&dst_map->eid)); + gid_address_sd_to_flat (&a->lcl_eid, &dst_map->eid, + &gid_address_sd_src (&dst_map->eid)); + } + else + { + gid_address_copy (&a->rmt_eid, &dst_map->eid); + gid_address_copy (&a->lcl_eid, &src_map->eid); + } + is_src_dst = 1; + } + else + gid_address_copy (&a->rmt_eid, &dst_map->eid); + + a->vni = gid_address_vni (&a->rmt_eid); + + /* get vrf or bd_index associated to vni */ + type = gid_address_type (&a->rmt_eid); + if (GID_ADDR_IP_PREFIX == type) + { + dpid = hash_get (lcm->table_id_by_vni, a->vni); + if (!dpid) + { + clib_warning ("vni %d not associated to a vrf!", a->vni); + return; + } + a->table_id = dpid[0]; + } + else if (GID_ADDR_MAC == type) + { + dpid = hash_get (lcm->bd_id_by_vni, a->vni); + if (!dpid) + { + clib_warning ("vni %d not associated to a bridge domain !", a->vni); + return; + } + a->bd_id = dpid[0]; + } + + /* find best locator pair that 1) verifies LISP policy 2) are connected */ + if (0 == get_locator_pairs (lcm, src_map, dst_map, &a->locator_pairs)) + { + /* negative entry */ + a->is_negative = 1; + a->action = dst_map->action; + } + + /* TODO remove */ + u8 ipver = ip_prefix_version (&gid_address_ippref (&a->rmt_eid)); + a->decap_next_index = (ipver == IP4) ? + LISP_GPE_INPUT_NEXT_IP4_INPUT : LISP_GPE_INPUT_NEXT_IP6_INPUT; + + vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index); + + /* add tunnel to fwd entry table XXX check return value from DP insertion */ + pool_get (lcm->fwd_entry_pool, fe); + fe->locator_pairs = a->locator_pairs; + gid_address_copy (&fe->reid, &a->rmt_eid); + gid_address_copy (&fe->leid, &src_map->eid); + fe->is_src_dst = is_src_dst; + hash_set (lcm->fwd_entry_by_mapping_index, dst_map_index, + fe - lcm->fwd_entry_pool); +} + +/** + * Returns vector of adjacencies. + * + * The caller must free the vector returned by this function. + * + * @param vni virtual network identifier + * @return vector of adjacencies + */ +lisp_adjacency_t * +vnet_lisp_adjacencies_get_by_vni (u32 vni) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + fwd_entry_t *fwd; + lisp_adjacency_t *adjs = 0, adj; + + /* *INDENT-OFF* */ + pool_foreach(fwd, lcm->fwd_entry_pool, + ({ + if (gid_address_vni (&fwd->reid) != vni) + continue; + + gid_address_copy (&adj.reid, &fwd->reid); + gid_address_copy (&adj.leid, &fwd->leid); + vec_add1 (adjs, adj); + })); + /* *INDENT-ON* */ + + return adjs; +} + +static clib_error_t * +lisp_show_adjacencies_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + lisp_adjacency_t *adjs, *adj; + vlib_cli_output (vm, "%s %40s\n", "leid", "reid"); + unformat_input_t _line_input, *line_input = &_line_input; + u32 vni = ~0; + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "vni %d", &vni)) + ; + else + { + vlib_cli_output (vm, "parse error: '%U'", + format_unformat_error, line_input); + return 0; + } + } + + if (~0 == vni) + { + vlib_cli_output (vm, "error: no vni specified!"); + return 0; + } + + adjs = vnet_lisp_adjacencies_get_by_vni (vni); + + vec_foreach (adj, adjs) + { + vlib_cli_output (vm, "%U %40U\n", format_gid_address, &adj->leid, + format_gid_address, &adj->reid); + } + vec_free (adjs); + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_show_adjacencies_command) = { + .path = "show lisp adjacencies", + .short_help = "show lisp adjacencies", + .function = lisp_show_adjacencies_command_fn, +}; +/* *INDENT-ON* */ + +static lisp_msmr_t * +get_map_server (ip_address_t * a) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + lisp_msmr_t *m; + + vec_foreach (m, lcm->map_servers) + { + if (!ip_address_cmp (&m->address, a)) + { + return m; + } + } + return 0; +} + +static lisp_msmr_t * +get_map_resolver (ip_address_t * a) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + lisp_msmr_t *m; + + vec_foreach (m, lcm->map_resolvers) + { + if (!ip_address_cmp (&m->address, a)) + { + return m; + } + } + return 0; +} + +int +vnet_lisp_add_del_map_server (ip_address_t * addr, u8 is_add) +{ + u32 i; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + lisp_msmr_t _ms, *ms = &_ms; + + if (vnet_lisp_enable_disable_status () == 0) + { + clib_warning ("LISP is disabled!"); + return VNET_API_ERROR_LISP_DISABLED; + } + + if (is_add) + { + if (get_map_server (addr)) + { + clib_warning ("map-server %U already exists!", format_ip_address, + addr); + return -1; + } + + memset (ms, 0, sizeof (*ms)); + ip_address_copy (&ms->address, addr); + vec_add1 (lcm->map_servers, ms[0]); + } + else + { + for (i = 0; i < vec_len (lcm->map_servers); i++) + { + ms = vec_elt_at_index (lcm->map_servers, i); + if (!ip_address_cmp (&ms->address, addr)) + { + vec_del1 (lcm->map_servers, i); + break; + } + } + } + + return 0; +} + +static clib_error_t * +lisp_add_del_map_server_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + int rv = 0; + u8 is_add = 1, ip_set = 0; + ip_address_t ip; + unformat_input_t _line_input, *line_input = &_line_input; + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "add")) + is_add = 1; + else if (unformat (line_input, "del")) + is_add = 0; + else if (unformat (line_input, "%U", unformat_ip_address, &ip)) + ip_set = 1; + else + { + vlib_cli_output (vm, "parse error: '%U'", + format_unformat_error, line_input); + return 0; + } + } + + if (!ip_set) + { + vlib_cli_output (vm, "map-server ip address not set!"); + return 0; + } + + rv = vnet_lisp_add_del_map_server (&ip, is_add); + if (!rv) + vlib_cli_output (vm, "failed to %s map-server!", + is_add ? "add" : "delete"); + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_add_del_map_server_command) = { + .path = "lisp map-server", + .short_help = "lisp map-server add|del <ip>", + .function = lisp_add_del_map_server_command_fn, +}; +/* *INDENT-ON* */ + +/** + * Add/remove mapping to/from map-cache. Overwriting not allowed. + */ +int +vnet_lisp_map_cache_add_del (vnet_lisp_add_del_mapping_args_t * a, + u32 * map_index_result) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + u32 mi, *map_indexp, map_index, i; + mapping_t *m, *old_map; + u32 **eid_indexes; + + mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid); + old_map = mi != ~0 ? pool_elt_at_index (lcm->mapping_pool, mi) : 0; + if (a->is_add) + { + /* TODO check if overwriting and take appropriate actions */ + if (mi != GID_LOOKUP_MISS && !gid_address_cmp (&old_map->eid, &a->eid)) + { + clib_warning ("eid %U found in the eid-table", format_gid_address, + &a->eid); + return VNET_API_ERROR_VALUE_EXIST; + } + + pool_get (lcm->mapping_pool, m); + gid_address_copy (&m->eid, &a->eid); + m->locator_set_index = a->locator_set_index; + m->ttl = a->ttl; + m->action = a->action; + m->local = a->local; + m->is_static = a->is_static; + m->key = vec_dup (a->key); + m->key_id = a->key_id; + + map_index = m - lcm->mapping_pool; + gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, map_index, + 1); + + if (pool_is_free_index (lcm->locator_set_pool, a->locator_set_index)) + { + clib_warning ("Locator set with index %d doesn't exist", + a->locator_set_index); + return VNET_API_ERROR_INVALID_VALUE; + } + + /* add eid to list of eids supported by locator-set */ + vec_validate (lcm->locator_set_to_eids, a->locator_set_index); + eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, + a->locator_set_index); + vec_add1 (eid_indexes[0], map_index); + + if (a->local) + { + /* mark as local */ + vec_add1 (lcm->local_mappings_indexes, map_index); + } + map_index_result[0] = map_index; + } + else + { + if (mi == GID_LOOKUP_MISS) + { + clib_warning ("eid %U not found in the eid-table", + format_gid_address, &a->eid); + return VNET_API_ERROR_INVALID_VALUE; + } + + /* clear locator-set to eids binding */ + eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, + a->locator_set_index); + for (i = 0; i < vec_len (eid_indexes[0]); i++) + { + map_indexp = vec_elt_at_index (eid_indexes[0], i); + if (map_indexp[0] == mi) + break; + } + vec_del1 (eid_indexes[0], i); + + /* remove local mark if needed */ + m = pool_elt_at_index (lcm->mapping_pool, mi); + if (m->local) + { + u32 k, *lm_indexp; + for (k = 0; k < vec_len (lcm->local_mappings_indexes); k++) + { + lm_indexp = vec_elt_at_index (lcm->local_mappings_indexes, k); + if (lm_indexp[0] == mi) + break; + } + vec_del1 (lcm->local_mappings_indexes, k); + } + + /* remove mapping from dictionary */ + gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, 0, 0); + gid_address_free (&m->eid); + pool_put_index (lcm->mapping_pool, mi); + } + + return 0; +} + +/** + * Add/update/delete mapping to/in/from map-cache. + */ +int +vnet_lisp_add_del_local_mapping (vnet_lisp_add_del_mapping_args_t * a, + u32 * map_index_result) +{ + uword *dp_table = 0; + u32 vni; + u8 type; + + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + + if (vnet_lisp_enable_disable_status () == 0) + { + clib_warning ("LISP is disabled!"); + return VNET_API_ERROR_LISP_DISABLED; + } + + vni = gid_address_vni (&a->eid); + type = gid_address_type (&a->eid); + if (GID_ADDR_IP_PREFIX == type) + dp_table = hash_get (lcm->table_id_by_vni, vni); + else if (GID_ADDR_MAC == type) + dp_table = hash_get (lcm->bd_id_by_vni, vni); + + if (!dp_table) + { + clib_warning ("vni %d not associated to a %s!", vni, + GID_ADDR_IP_PREFIX == type ? "vrf" : "bd"); + return VNET_API_ERROR_INVALID_VALUE; + } + + /* store/remove mapping from map-cache */ + return vnet_lisp_map_cache_add_del (a, map_index_result); +} + +static clib_error_t * +lisp_add_del_local_eid_command_fn (vlib_main_t * vm, unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + unformat_input_t _line_input, *line_input = &_line_input; + u8 is_add = 1; + gid_address_t eid; + gid_address_t *eids = 0; + clib_error_t *error = 0; + u8 *locator_set_name = 0; + u32 locator_set_index = 0, map_index = 0; + uword *p; + vnet_lisp_add_del_mapping_args_t _a, *a = &_a; + int rv = 0; + u32 vni = 0; + u8 *key = 0; + u32 key_id = 0; + + memset (&eid, 0, sizeof (eid)); + memset (a, 0, sizeof (*a)); + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "add")) + is_add = 1; + else if (unformat (line_input, "del")) + is_add = 0; + else if (unformat (line_input, "eid %U", unformat_gid_address, &eid)) + ; + else if (unformat (line_input, "vni %d", &vni)) + gid_address_vni (&eid) = vni; + else if (unformat (line_input, "secret-key %_%v%_", &key)) + ; + else if (unformat (line_input, "key-id %U", unformat_hmac_key_id, + &key_id)) + ; + else if (unformat (line_input, "locator-set %_%v%_", &locator_set_name)) + { + p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name); + if (!p) + { + error = clib_error_return (0, "locator-set %s doesn't exist", + locator_set_name); + goto done; + } + locator_set_index = p[0]; + } + else + { + error = unformat_parse_error (line_input); + goto done; + } + } + /* XXX treat batch configuration */ + + if (GID_ADDR_SRC_DST == gid_address_type (&eid)) + { + error = + clib_error_return (0, "src/dst is not supported for local EIDs!"); + goto done; + } + + if (key && (0 == key_id)) + { + vlib_cli_output (vm, "invalid key_id!"); + return 0; + } + + gid_address_copy (&a->eid, &eid); + a->is_add = is_add; + a->locator_set_index = locator_set_index; + a->local = 1; + a->key = key; + a->key_id = key_id; + + rv = vnet_lisp_add_del_local_mapping (a, &map_index); + if (0 != rv) + { + error = clib_error_return (0, "failed to %s local mapping!", + is_add ? "add" : "delete"); + } +done: + vec_free (eids); + if (locator_set_name) + vec_free (locator_set_name); + gid_address_free (&a->eid); + vec_free (a->key); + return error; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_add_del_local_eid_command) = { + .path = "lisp eid-table", + .short_help = "lisp eid-table add/del [vni <vni>] eid <eid> " + "locator-set <locator-set> [key <secret-key> key-id sha1|sha256 ]", + .function = lisp_add_del_local_eid_command_fn, +}; +/* *INDENT-ON* */ + +int +vnet_lisp_eid_table_map (u32 vni, u32 dp_id, u8 is_l2, u8 is_add) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + uword *dp_idp, *vnip, **dp_table_by_vni, **vni_by_dp_table; + + if (vnet_lisp_enable_disable_status () == 0) + { + clib_warning ("LISP is disabled!"); + return -1; + } + + dp_table_by_vni = is_l2 ? &lcm->bd_id_by_vni : &lcm->table_id_by_vni; + vni_by_dp_table = is_l2 ? &lcm->vni_by_bd_id : &lcm->vni_by_table_id; + + if (!is_l2 && (vni == 0 || dp_id == 0)) + { + clib_warning ("can't add/del default vni-vrf mapping!"); + return -1; + } + + dp_idp = hash_get (dp_table_by_vni[0], vni); + vnip = hash_get (vni_by_dp_table[0], dp_id); + + if (is_add) + { + if (dp_idp || vnip) + { + clib_warning ("vni %d or vrf %d already used in vrf/vni " + "mapping!", vni, dp_id); + return -1; + } + hash_set (dp_table_by_vni[0], vni, dp_id); + hash_set (vni_by_dp_table[0], dp_id, vni); + + /* create dp iface */ + dp_add_del_iface (lcm, vni, is_l2, 1); + } + else + { + if (!dp_idp || !vnip) + { + clib_warning ("vni %d or vrf %d not used in any vrf/vni! " + "mapping!", vni, dp_id); + return -1; + } + hash_unset (dp_table_by_vni[0], vni); + hash_unset (vni_by_dp_table[0], dp_id); + + /* remove dp iface */ + dp_add_del_iface (lcm, vni, is_l2, 0); + } + return 0; + +} + +static clib_error_t * +lisp_eid_table_map_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + u8 is_add = 1, is_l2 = 0; + u32 vni = 0, dp_id = 0; + unformat_input_t _line_input, *line_input = &_line_input; + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "del")) + is_add = 0; + else if (unformat (line_input, "vni %d", &vni)) + ; + else if (unformat (line_input, "vrf %d", &dp_id)) + ; + else if (unformat (line_input, "bd %d", &dp_id)) + is_l2 = 1; + else + { + return unformat_parse_error (line_input); + } + } + vnet_lisp_eid_table_map (vni, dp_id, is_l2, is_add); + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_eid_table_map_command) = { + .path = "lisp eid-table map", + .short_help = "lisp eid-table map [del] vni <vni> vrf <vrf> | bd <bdi>", + .function = lisp_eid_table_map_command_fn, +}; +/* *INDENT-ON* */ + +/* return 0 if the two locator sets are identical 1 otherwise */ +static u8 +compare_locators (lisp_cp_main_t * lcm, u32 * old_ls_indexes, + locator_t * new_locators) +{ + u32 i, old_li; + locator_t *old_loc, *new_loc; + + if (vec_len (old_ls_indexes) != vec_len (new_locators)) + return 1; + + for (i = 0; i < vec_len (new_locators); i++) + { + old_li = vec_elt (old_ls_indexes, i); + old_loc = pool_elt_at_index (lcm->locator_pool, old_li); + + new_loc = vec_elt_at_index (new_locators, i); + + if (locator_cmp (old_loc, new_loc)) + return 1; + } + return 0; +} + +typedef struct +{ + u8 is_negative; + void *lcm; + gid_address_t *eids_to_be_deleted; +} remove_mapping_args_t; + +/** + * Callback invoked when a sub-prefix is found + */ +static void +remove_mapping_if_needed (u32 mi, void *arg) +{ + u8 delete = 0; + remove_mapping_args_t *a = arg; + lisp_cp_main_t *lcm = a->lcm; + mapping_t *m; + locator_set_t *ls; + + m = pool_elt_at_index (lcm->mapping_pool, mi); + if (!m) + return; + + ls = pool_elt_at_index (lcm->locator_set_pool, m->locator_set_index); + + if (a->is_negative) + { + if (0 != vec_len (ls->locator_indices)) + delete = 1; + } + else + { + if (0 == vec_len (ls->locator_indices)) + delete = 1; + } + + if (delete) + vec_add1 (a->eids_to_be_deleted, m->eid); +} + +/** + * This function searches map cache and looks for IP prefixes that are subset + * of the provided one. If such prefix is found depending on 'is_negative' + * it does follows: + * + * 1) if is_negative is true and found prefix points to positive mapping, + * then the mapping is removed + * 2) if is_negative is false and found prefix points to negative mapping, + * then the mapping is removed + */ +static void +remove_overlapping_sub_prefixes (lisp_cp_main_t * lcm, gid_address_t * eid, + u8 is_negative) +{ + gid_address_t *e; + remove_mapping_args_t a; + memset (&a, 0, sizeof (a)); + + /* do this only in src/dst mode ... */ + if (MR_MODE_SRC_DST != lcm->map_request_mode) + return; + + /* ... and only for IP prefix */ + if (GID_ADDR_SRC_DST != gid_address_type (eid) + || (FID_ADDR_IP_PREF != gid_address_sd_dst_type (eid))) + return; + + a.is_negative = is_negative; + a.lcm = lcm; + + gid_dict_foreach_subprefix (&lcm->mapping_index_by_gid, eid, + remove_mapping_if_needed, &a); + + vec_foreach (e, a.eids_to_be_deleted) + { + lisp_add_del_adjacency (lcm, 0, e, 0 /* is_add */ ); + vnet_lisp_add_del_mapping (e, 0, 0, 0, 0, 0 /* is add */ , 0, 0); + } + + vec_free (a.eids_to_be_deleted); +} + +static void +mapping_delete_timer (lisp_cp_main_t * lcm, u32 mi) +{ + timing_wheel_delete (&lcm->wheel, mi); +} + +/** + * Adds/removes/updates mapping. Does not program forwarding. + * + * @param eid end-host identifier + * @param rlocs vector of remote locators + * @param action action for negative map-reply + * @param is_add add mapping if non-zero, delete otherwise + * @param res_map_index the map-index that was created/updated/removed. It is + * set to ~0 if no action is taken. + * @param is_static used for distinguishing between statically learned + remote mappings and mappings obtained from MR + * @return return code + */ +int +vnet_lisp_add_del_mapping (gid_address_t * eid, locator_t * rlocs, u8 action, + u8 authoritative, u32 ttl, u8 is_add, u8 is_static, + u32 * res_map_index) +{ + vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args; + vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + u32 mi, ls_index = 0, dst_map_index; + mapping_t *old_map; + + if (vnet_lisp_enable_disable_status () == 0) + { + clib_warning ("LISP is disabled!"); + return VNET_API_ERROR_LISP_DISABLED; + } + + if (res_map_index) + res_map_index[0] = ~0; + + memset (m_args, 0, sizeof (m_args[0])); + memset (ls_args, 0, sizeof (ls_args[0])); + + ls_args->locators = rlocs; + + mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, eid); + old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0; + + if (is_add) + { + /* overwrite: if mapping already exists, decide if locators should be + * updated and be done */ + if (old_map && gid_address_cmp (&old_map->eid, eid) == 0) + { + if (!is_static && (old_map->is_static || old_map->local)) + { + /* do not overwrite local or static remote mappings */ + clib_warning ("mapping %U rejected due to collision with local " + "or static remote mapping!", format_gid_address, + eid); + return 0; + } + + locator_set_t *old_ls; + + /* update mapping attributes */ + old_map->action = action; + old_map->authoritative = authoritative; + old_map->ttl = ttl; + + old_ls = pool_elt_at_index (lcm->locator_set_pool, + old_map->locator_set_index); + if (compare_locators (lcm, old_ls->locator_indices, + ls_args->locators)) + { + /* set locator-set index to overwrite */ + ls_args->is_add = 1; + ls_args->index = old_map->locator_set_index; + vnet_lisp_add_del_locator_set (ls_args, 0); + if (res_map_index) + res_map_index[0] = mi; + } + } + /* new mapping */ + else + { + remove_overlapping_sub_prefixes (lcm, eid, 0 == ls_args->locators); + + ls_args->is_add = 1; + ls_args->index = ~0; + + vnet_lisp_add_del_locator_set (ls_args, &ls_index); + + /* add mapping */ + gid_address_copy (&m_args->eid, eid); + m_args->is_add = 1; + m_args->action = action; + m_args->locator_set_index = ls_index; + m_args->is_static = is_static; + m_args->ttl = ttl; + vnet_lisp_map_cache_add_del (m_args, &dst_map_index); + + if (res_map_index) + res_map_index[0] = dst_map_index; + } + } + else + { + if (old_map == 0 || gid_address_cmp (&old_map->eid, eid) != 0) + { + clib_warning ("cannot delete mapping for eid %U", + format_gid_address, eid); + return -1; + } + + m_args->is_add = 0; + gid_address_copy (&m_args->eid, eid); + m_args->locator_set_index = old_map->locator_set_index; + + /* delete mapping associated from map-cache */ + vnet_lisp_map_cache_add_del (m_args, 0); + + ls_args->is_add = 0; + ls_args->index = old_map->locator_set_index; + /* delete locator set */ + vnet_lisp_add_del_locator_set (ls_args, 0); + + /* delete timer associated to the mapping if any */ + if (old_map->timer_set) + mapping_delete_timer (lcm, mi); + + /* return old mapping index */ + if (res_map_index) + res_map_index[0] = mi; + } + + /* success */ + return 0; +} + +int +vnet_lisp_clear_all_remote_adjacencies (void) +{ + int rv = 0; + u32 mi, *map_indices = 0, *map_indexp; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + vnet_lisp_add_del_mapping_args_t _dm_args, *dm_args = &_dm_args; + vnet_lisp_add_del_locator_set_args_t _ls, *ls = &_ls; + + /* *INDENT-OFF* */ + pool_foreach_index (mi, lcm->mapping_pool, + ({ + vec_add1 (map_indices, mi); + })); + /* *INDENT-ON* */ + + vec_foreach (map_indexp, map_indices) + { + mapping_t *map = pool_elt_at_index (lcm->mapping_pool, map_indexp[0]); + if (!map->local) + { + dp_del_fwd_entry (lcm, 0, map_indexp[0]); + + dm_args->is_add = 0; + gid_address_copy (&dm_args->eid, &map->eid); + dm_args->locator_set_index = map->locator_set_index; + + /* delete mapping associated to fwd entry */ + vnet_lisp_map_cache_add_del (dm_args, 0); + + ls->is_add = 0; + ls->local = 0; + ls->index = map->locator_set_index; + /* delete locator set */ + rv = vnet_lisp_add_del_locator_set (ls, 0); + if (rv != 0) + goto cleanup; + } + } + +cleanup: + if (map_indices) + vec_free (map_indices); + return rv; +} + +/** + * Adds adjacency or removes forwarding entry associated to remote mapping. + * Note that adjacencies are not stored, they only result in forwarding entries + * being created. + */ +static int +lisp_add_del_adjacency (lisp_cp_main_t * lcm, gid_address_t * local_eid, + gid_address_t * remote_eid, u8 is_add) +{ + u32 local_mi, remote_mi = ~0; + + if (vnet_lisp_enable_disable_status () == 0) + { + clib_warning ("LISP is disabled!"); + return VNET_API_ERROR_LISP_DISABLED; + } + + remote_mi = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid, + remote_eid, local_eid); + if (GID_LOOKUP_MISS == remote_mi) + { + clib_warning ("Remote eid %U not found. Cannot add adjacency!", + format_gid_address, remote_eid); + + return -1; + } + + if (is_add) + { + /* TODO 1) check if src/dst 2) once we have src/dst working, use it in + * delete*/ + + /* check if source eid has an associated mapping. If pitr mode is on, + * just use the pitr's mapping */ + local_mi = lcm->lisp_pitr ? lcm->pitr_map_index : + gid_dictionary_lookup (&lcm->mapping_index_by_gid, local_eid); + + + if (GID_LOOKUP_MISS == local_mi) + { + clib_warning ("Local eid %U not found. Cannot add adjacency!", + format_gid_address, local_eid); + + return -1; + } + + /* update forwarding */ + dp_add_fwd_entry (lcm, local_mi, remote_mi); + } + else + dp_del_fwd_entry (lcm, 0, remote_mi); + + return 0; +} + +int +vnet_lisp_add_del_adjacency (vnet_lisp_add_del_adjacency_args_t * a) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + return lisp_add_del_adjacency (lcm, &a->leid, &a->reid, a->is_add); +} + +/** + * Handler for add/del remote mapping CLI. + * + * @param vm vlib context + * @param input input from user + * @param cmd cmd + * @return pointer to clib error structure + */ +static clib_error_t * +lisp_add_del_remote_mapping_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + clib_error_t *error = 0; + unformat_input_t _line_input, *line_input = &_line_input; + u8 is_add = 1, del_all = 0; + locator_t rloc, *rlocs = 0, *curr_rloc = 0; + gid_address_t eid; + u8 eid_set = 0; + u32 vni, action = ~0, p, w; + int rv; + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + memset (&eid, 0, sizeof (eid)); + memset (&rloc, 0, sizeof (rloc)); + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "del-all")) + del_all = 1; + else if (unformat (line_input, "del")) + is_add = 0; + else if (unformat (line_input, "add")) + ; + else if (unformat (line_input, "eid %U", unformat_gid_address, &eid)) + eid_set = 1; + else if (unformat (line_input, "vni %u", &vni)) + { + gid_address_vni (&eid) = vni; + } + else if (unformat (line_input, "p %d w %d", &p, &w)) + { + if (!curr_rloc) + { + clib_warning + ("No RLOC configured for setting priority/weight!"); + goto done; + } + curr_rloc->priority = p; + curr_rloc->weight = w; + } + else if (unformat (line_input, "rloc %U", unformat_ip_address, + &gid_address_ip (&rloc.address))) + { + /* since rloc is stored in ip prefix we need to set prefix length */ + ip_prefix_t *pref = &gid_address_ippref (&rloc.address); + + u8 version = gid_address_ip_version (&rloc.address); + ip_prefix_len (pref) = ip_address_max_len (version); + + vec_add1 (rlocs, rloc); + curr_rloc = &rlocs[vec_len (rlocs) - 1]; + } + else if (unformat (line_input, "action %U", + unformat_negative_mapping_action, &action)) + ; + else + { + clib_warning ("parse error"); + goto done; + } + } + + if (!eid_set) + { + clib_warning ("missing eid!"); + goto done; + } + + if (!del_all) + { + if (is_add && (~0 == action) && 0 == vec_len (rlocs)) + { + clib_warning ("no action set for negative map-reply!"); + goto done; + } + } + else + { + vnet_lisp_clear_all_remote_adjacencies (); + goto done; + } + + /* TODO build src/dst with seid */ + + /* if it's a delete, clean forwarding */ + if (!is_add) + { + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + rv = lisp_add_del_adjacency (lcm, 0, &eid, /* is_add */ 0); + if (rv) + { + goto done; + } + } + + /* add as static remote mapping, i.e., not authoritative and infinite + * ttl */ + rv = vnet_lisp_add_del_mapping (&eid, rlocs, action, 0, ~0, is_add, + 1 /* is_static */ , 0); + + if (rv) + clib_warning ("failed to %s remote mapping!", is_add ? "add" : "delete"); + +done: + vec_free (rlocs); + unformat_free (line_input); + return error; +} + +VLIB_CLI_COMMAND (lisp_add_del_remote_mapping_command) = +{ +.path = "lisp remote-mapping",.short_help = + "lisp remote-mapping add|del [del-all] vni <vni> " + "eid <est-eid> [action <no-action|natively-forward|" + "send-map-request|drop>] rloc <dst-locator> p <prio> w <weight> " + "[rloc <dst-locator> ... ]",.function = + lisp_add_del_remote_mapping_command_fn,}; + +/** + * Handler for add/del adjacency CLI. + */ +static clib_error_t * +lisp_add_del_adjacency_command_fn (vlib_main_t * vm, unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + clib_error_t *error = 0; + unformat_input_t _line_input, *line_input = &_line_input; + vnet_lisp_add_del_adjacency_args_t _a, *a = &_a; + u8 is_add = 1; + ip_prefix_t *reid_ippref, *leid_ippref; + gid_address_t leid, reid; + u8 *dmac = gid_address_mac (&reid); + u8 *smac = gid_address_mac (&leid); + u8 reid_set = 0, leid_set = 0; + u32 vni; + int rv; + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + memset (&reid, 0, sizeof (reid)); + memset (&leid, 0, sizeof (leid)); + + leid_ippref = &gid_address_ippref (&leid); + reid_ippref = &gid_address_ippref (&reid); + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "del")) + is_add = 0; + else if (unformat (line_input, "add")) + ; + else if (unformat (line_input, "reid %U", + unformat_ip_prefix, reid_ippref)) + { + gid_address_type (&reid) = GID_ADDR_IP_PREFIX; + reid_set = 1; + } + else if (unformat (line_input, "reid %U", unformat_mac_address, dmac)) + { + gid_address_type (&reid) = GID_ADDR_MAC; + reid_set = 1; + } + else if (unformat (line_input, "vni %u", &vni)) + { + gid_address_vni (&leid) = vni; + gid_address_vni (&reid) = vni; + } + else if (unformat (line_input, "leid %U", + unformat_ip_prefix, leid_ippref)) + { + gid_address_type (&leid) = GID_ADDR_IP_PREFIX; + leid_set = 1; + } + else if (unformat (line_input, "leid %U", unformat_mac_address, smac)) + { + gid_address_type (&leid) = GID_ADDR_MAC; + leid_set = 1; + } + else + { + clib_warning ("parse error"); + goto done; + } + } + + if (!reid_set || !leid_set) + { + clib_warning ("missing remote or local eid!"); + goto done; + } + + if ((gid_address_type (&leid) != gid_address_type (&reid)) + || (gid_address_type (&reid) == GID_ADDR_IP_PREFIX + && ip_prefix_version (reid_ippref) + != ip_prefix_version (leid_ippref))) + { + clib_warning ("remote and local EIDs are of different types!"); + return error; + } + + memset (a, 0, sizeof (a[0])); + gid_address_copy (&a->leid, &leid); + gid_address_copy (&a->reid, &reid); + + a->is_add = is_add; + rv = vnet_lisp_add_del_adjacency (a); + + if (rv) + clib_warning ("failed to %s adjacency!", is_add ? "add" : "delete"); + +done: + unformat_free (line_input); + return error; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_add_del_adjacency_command) = { + .path = "lisp adjacency", + .short_help = "lisp adjacency add|del vni <vni> reid <remote-eid> " + "leid <local-eid>", + .function = lisp_add_del_adjacency_command_fn, +}; +/* *INDENT-ON* */ + +int +vnet_lisp_set_map_request_mode (u8 mode) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + + if (vnet_lisp_enable_disable_status () == 0) + { + clib_warning ("LISP is disabled!"); + return VNET_API_ERROR_LISP_DISABLED; + } + + if (mode >= _MR_MODE_MAX) + { + clib_warning ("Invalid LISP map request mode %d!", mode); + return VNET_API_ERROR_INVALID_ARGUMENT; + } + + lcm->map_request_mode = mode; + return 0; +} + +static clib_error_t * +lisp_map_request_mode_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + unformat_input_t _i, *i = &_i; + map_request_mode_t mr_mode = _MR_MODE_MAX; + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, i)) + return 0; + + while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT) + { + if (unformat (i, "dst-only")) + mr_mode = MR_MODE_DST_ONLY; + else if (unformat (i, "src-dst")) + mr_mode = MR_MODE_SRC_DST; + else + { + clib_warning ("parse error '%U'", format_unformat_error, i); + goto done; + } + } + + if (_MR_MODE_MAX == mr_mode) + { + clib_warning ("No LISP map request mode entered!"); + return 0; + } + + vnet_lisp_set_map_request_mode (mr_mode); +done: + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_map_request_mode_command) = { + .path = "lisp map-request mode", + .short_help = "lisp map-request mode dst-only|src-dst", + .function = lisp_map_request_mode_command_fn, +}; +/* *INDENT-ON* */ + +static u8 * +format_lisp_map_request_mode (u8 * s, va_list * args) +{ + u32 mode = va_arg (*args, u32); + + switch (mode) + { + case 0: + return format (0, "dst-only"); + case 1: + return format (0, "src-dst"); + } + return 0; +} + +static clib_error_t * +lisp_show_map_request_mode_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + vlib_cli_output (vm, "map-request mode: %U", format_lisp_map_request_mode, + vnet_lisp_get_map_request_mode ()); + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_show_map_request_mode_command) = { + .path = "show lisp map-request mode", + .short_help = "show lisp map-request mode", + .function = lisp_show_map_request_mode_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +lisp_show_map_resolvers_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + lisp_msmr_t *mr; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + + vec_foreach (mr, lcm->map_resolvers) + { + vlib_cli_output (vm, "%U", format_ip_address, &mr->address); + } + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_show_map_resolvers_command) = { + .path = "show lisp map-resolvers", + .short_help = "show lisp map-resolvers", + .function = lisp_show_map_resolvers_command_fn, +}; +/* *INDENT-ON* */ + +int +vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + u32 locator_set_index = ~0; + mapping_t *m; + uword *p; + + if (vnet_lisp_enable_disable_status () == 0) + { + clib_warning ("LISP is disabled!"); + return VNET_API_ERROR_LISP_DISABLED; + } + + p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name); + if (!p) + { + clib_warning ("locator-set %v doesn't exist", locator_set_name); + return -1; + } + locator_set_index = p[0]; + + if (is_add) + { + pool_get (lcm->mapping_pool, m); + m->locator_set_index = locator_set_index; + m->local = 1; + lcm->pitr_map_index = m - lcm->mapping_pool; + + /* enable pitr mode */ + lcm->lisp_pitr = 1; + } + else + { + /* remove pitr mapping */ + pool_put_index (lcm->mapping_pool, lcm->pitr_map_index); + + /* disable pitr mode */ + lcm->lisp_pitr = 0; + } + return 0; +} + +static clib_error_t * +lisp_pitr_set_locator_set_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + u8 locator_name_set = 0; + u8 *locator_set_name = 0; + u8 is_add = 1; + unformat_input_t _line_input, *line_input = &_line_input; + clib_error_t *error = 0; + int rv = 0; + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "ls %_%v%_", &locator_set_name)) + locator_name_set = 1; + else if (unformat (line_input, "disable")) + is_add = 0; + else + return clib_error_return (0, "parse error"); + } + + if (!locator_name_set) + { + clib_warning ("No locator set specified!"); + goto done; + } + rv = vnet_lisp_pitr_set_locator_set (locator_set_name, is_add); + if (0 != rv) + { + error = clib_error_return (0, "failed to %s pitr!", + is_add ? "add" : "delete"); + } + +done: + if (locator_set_name) + vec_free (locator_set_name); + return error; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_pitr_set_locator_set_command) = { + .path = "lisp pitr", + .short_help = "lisp pitr [disable] ls <locator-set-name>", + .function = lisp_pitr_set_locator_set_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +lisp_show_pitr_command_fn (vlib_main_t * vm, + unformat_input_t * input, vlib_cli_command_t * cmd) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + mapping_t *m; + locator_set_t *ls; + u8 *tmp_str = 0; + + vlib_cli_output (vm, "%=20s%=16s", + "pitr", lcm->lisp_pitr ? "locator-set" : ""); + + if (!lcm->lisp_pitr) + { + vlib_cli_output (vm, "%=20s", "disable"); + return 0; + } + + if (~0 == lcm->pitr_map_index) + { + tmp_str = format (0, "N/A"); + } + else + { + m = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index); + if (~0 != m->locator_set_index) + { + ls = + pool_elt_at_index (lcm->locator_set_pool, m->locator_set_index); + tmp_str = format (0, "%s", ls->name); + } + else + { + tmp_str = format (0, "N/A"); + } + } + vec_add1 (tmp_str, 0); + + vlib_cli_output (vm, "%=20s%=16s", "enable", tmp_str); + + vec_free (tmp_str); + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_show_pitr_command) = { + .path = "show lisp pitr", + .short_help = "Show pitr", + .function = lisp_show_pitr_command_fn, +}; +/* *INDENT-ON* */ + +static u8 * +format_eid_entry (u8 * s, va_list * args) +{ + vnet_main_t *vnm = va_arg (*args, vnet_main_t *); + lisp_cp_main_t *lcm = va_arg (*args, lisp_cp_main_t *); + mapping_t *mapit = va_arg (*args, mapping_t *); + locator_set_t *ls = va_arg (*args, locator_set_t *); + gid_address_t *gid = &mapit->eid; + u32 ttl = mapit->ttl; + u8 aut = mapit->authoritative; + u32 *loc_index; + u8 first_line = 1; + u8 *loc; + + u8 *type = ls->local ? format (0, "local(%s)", ls->name) + : format (0, "remote"); + + if (vec_len (ls->locator_indices) == 0) + { + s = format (s, "%-35U%-30s%-20u%-u", format_gid_address, gid, + type, ttl, aut); + } + else + { + vec_foreach (loc_index, ls->locator_indices) + { + locator_t *l = pool_elt_at_index (lcm->locator_pool, loc_index[0]); + if (l->local) + loc = format (0, "%U", format_vnet_sw_if_index_name, vnm, + l->sw_if_index); + else + loc = format (0, "%U", format_ip_address, + &gid_address_ip (&l->address)); + + if (first_line) + { + s = format (s, "%-35U%-20s%-30v%-20u%-u\n", format_gid_address, + gid, type, loc, ttl, aut); + first_line = 0; + } + else + s = format (s, "%55s%v\n", "", loc); + } + } + return s; +} + +static clib_error_t * +lisp_show_eid_table_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + mapping_t *mapit; + unformat_input_t _line_input, *line_input = &_line_input; + u32 mi; + gid_address_t eid; + u8 print_all = 1; + u8 filter = 0; + + memset (&eid, 0, sizeof (eid)); + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "eid %U", unformat_gid_address, &eid)) + print_all = 0; + else if (unformat (line_input, "local")) + filter = 1; + else if (unformat (line_input, "remote")) + filter = 2; + else + return clib_error_return (0, "parse error: '%U'", + format_unformat_error, line_input); + } + + vlib_cli_output (vm, "%-35s%-20s%-30s%-20s%-s", + "EID", "type", "locators", "ttl", "autoritative"); + + if (print_all) + { + /* *INDENT-OFF* */ + pool_foreach (mapit, lcm->mapping_pool, + ({ + locator_set_t * ls = pool_elt_at_index (lcm->locator_set_pool, + mapit->locator_set_index); + if (filter && !((1 == filter && ls->local) || + (2 == filter && !ls->local))) + { + continue; + } + vlib_cli_output (vm, "%U", format_eid_entry, lcm->vnet_main, + lcm, mapit, ls); + })); + /* *INDENT-ON* */ + } + else + { + mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &eid); + if ((u32) ~ 0 == mi) + return 0; + + mapit = pool_elt_at_index (lcm->mapping_pool, mi); + locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool, + mapit->locator_set_index); + + if (filter && !((1 == filter && ls->local) || + (2 == filter && !ls->local))) + { + return 0; + } + + vlib_cli_output (vm, "%U,", format_eid_entry, lcm->vnet_main, + lcm, mapit, ls); + } + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_cp_show_eid_table_command) = { + .path = "show lisp eid-table", + .short_help = "Shows EID table", + .function = lisp_show_eid_table_command_fn, +}; +/* *INDENT-ON* */ + +/* cleans locator to locator-set data and removes locators not part of + * any locator-set */ +static void +clean_locator_to_locator_set (lisp_cp_main_t * lcm, u32 lsi) +{ + u32 i, j, *loc_indexp, *ls_indexp, **ls_indexes, *to_be_deleted = 0; + locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool, lsi); + for (i = 0; i < vec_len (ls->locator_indices); i++) + { + loc_indexp = vec_elt_at_index (ls->locator_indices, i); + ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets, + loc_indexp[0]); + for (j = 0; j < vec_len (ls_indexes[0]); j++) + { + ls_indexp = vec_elt_at_index (ls_indexes[0], j); + if (ls_indexp[0] == lsi) + break; + } + + /* delete index for removed locator-set */ + vec_del1 (ls_indexes[0], j); + + /* delete locator if it's part of no locator-set */ + if (vec_len (ls_indexes[0]) == 0) + { + pool_put_index (lcm->locator_pool, loc_indexp[0]); + vec_add1 (to_be_deleted, i); + } + } + + if (to_be_deleted) + { + for (i = 0; i < vec_len (to_be_deleted); i++) + { + loc_indexp = vec_elt_at_index (to_be_deleted, i); + vec_del1 (ls->locator_indices, loc_indexp[0]); + } + vec_free (to_be_deleted); + } +} + +static inline uword * +get_locator_set_index (vnet_lisp_add_del_locator_set_args_t * a, uword * p) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + + ASSERT (a != NULL); + ASSERT (p != NULL); + + /* find locator-set */ + if (a->local) + { + p = hash_get_mem (lcm->locator_set_index_by_name, a->name); + } + else + { + *p = a->index; + } + + return p; +} + +static inline int +is_locator_in_locator_set (lisp_cp_main_t * lcm, locator_set_t * ls, + locator_t * loc) +{ + locator_t *itloc; + u32 *locit; + + ASSERT (ls != NULL); + ASSERT (loc != NULL); + + vec_foreach (locit, ls->locator_indices) + { + itloc = pool_elt_at_index (lcm->locator_pool, locit[0]); + if ((ls->local && itloc->sw_if_index == loc->sw_if_index) || + (!ls->local && !gid_address_cmp (&itloc->address, &loc->address))) + { + clib_warning ("Duplicate locator"); + return VNET_API_ERROR_VALUE_EXIST; + } + } + + return 0; +} + +static inline void +remove_locator_from_locator_set (locator_set_t * ls, u32 * locit, + u32 ls_index, u32 loc_id) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + u32 **ls_indexes = NULL; + + ASSERT (ls != NULL); + ASSERT (locit != NULL); + + ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets, locit[0]); + pool_put_index (lcm->locator_pool, locit[0]); + vec_del1 (ls->locator_indices, loc_id); + vec_del1 (ls_indexes[0], ls_index); +} + +int +vnet_lisp_add_del_locator (vnet_lisp_add_del_locator_set_args_t * a, + locator_set_t * ls, u32 * ls_result) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + locator_t *loc = NULL, *itloc = NULL; + uword _p = (u32) ~ 0, *p = &_p; + u32 loc_index = ~0, ls_index = ~0, *locit = NULL, **ls_indexes = NULL; + u32 loc_id = ~0; + int ret = 0; + + ASSERT (a != NULL); + + if (vnet_lisp_enable_disable_status () == 0) + { + clib_warning ("LISP is disabled!"); + return VNET_API_ERROR_LISP_DISABLED; + } + + p = get_locator_set_index (a, p); + if (!p) + { + clib_warning ("locator-set %v doesn't exist", a->name); + return VNET_API_ERROR_INVALID_ARGUMENT; + } + + if (ls == 0) + { + ls = pool_elt_at_index (lcm->locator_set_pool, p[0]); + if (!ls) + { + clib_warning ("locator-set %d to be overwritten doesn't exist!", + p[0]); + return VNET_API_ERROR_INVALID_ARGUMENT; + } + } + + if (a->is_add) + { + if (ls_result) + ls_result[0] = p[0]; + + /* allocate locators */ + vec_foreach (itloc, a->locators) + { + ret = is_locator_in_locator_set (lcm, ls, itloc); + if (0 != ret) + { + return ret; + } + + pool_get (lcm->locator_pool, loc); + loc[0] = itloc[0]; + loc_index = loc - lcm->locator_pool; + + vec_add1 (ls->locator_indices, loc_index); + + vec_validate (lcm->locator_to_locator_sets, loc_index); + ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets, + loc_index); + vec_add1 (ls_indexes[0], p[0]); + } + } + else + { + ls_index = p[0]; + + itloc = a->locators; + loc_id = 0; + vec_foreach (locit, ls->locator_indices) + { + loc = pool_elt_at_index (lcm->locator_pool, locit[0]); + + if (loc->local && loc->sw_if_index == itloc->sw_if_index) + { + remove_locator_from_locator_set (ls, locit, ls_index, loc_id); + } + if (0 == loc->local && + !gid_address_cmp (&loc->address, &itloc->address)) + { + remove_locator_from_locator_set (ls, locit, ls_index, loc_id); + } + + loc_id++; + } + } + + return 0; +} + +int +vnet_lisp_add_del_locator_set (vnet_lisp_add_del_locator_set_args_t * a, + u32 * ls_result) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + locator_set_t *ls; + uword _p = (u32) ~ 0, *p = &_p; + u32 ls_index; + u32 **eid_indexes; + int ret = 0; + + if (vnet_lisp_enable_disable_status () == 0) + { + clib_warning ("LISP is disabled!"); + return VNET_API_ERROR_LISP_DISABLED; + } + + if (a->is_add) + { + p = get_locator_set_index (a, p); + + /* overwrite */ + if (p && p[0] != (u32) ~ 0) + { + ls = pool_elt_at_index (lcm->locator_set_pool, p[0]); + if (!ls) + { + clib_warning ("locator-set %d to be overwritten doesn't exist!", + p[0]); + return -1; + } + + /* clean locator to locator-set vectors and remove locators if + * they're not part of another locator-set */ + clean_locator_to_locator_set (lcm, p[0]); + + /* remove locator indices from locator set */ + vec_free (ls->locator_indices); + + ls_index = p[0]; + + if (ls_result) + ls_result[0] = p[0]; + } + /* new locator-set */ + else + { + pool_get (lcm->locator_set_pool, ls); + memset (ls, 0, sizeof (*ls)); + ls_index = ls - lcm->locator_set_pool; + + if (a->local) + { + ls->name = vec_dup (a->name); + + if (!lcm->locator_set_index_by_name) + lcm->locator_set_index_by_name = hash_create_vec ( + /* size */ + 0, + sizeof + (ls->name + [0]), + sizeof + (uword)); + hash_set_mem (lcm->locator_set_index_by_name, ls->name, + ls_index); + + /* mark as local locator-set */ + vec_add1 (lcm->local_locator_set_indexes, ls_index); + } + ls->local = a->local; + if (ls_result) + ls_result[0] = ls_index; + } + + ret = vnet_lisp_add_del_locator (a, ls, NULL); + if (0 != ret) + { + return ret; + } + } + else + { + p = get_locator_set_index (a, p); + if (!p) + { + clib_warning ("locator-set %v doesn't exists", a->name); + return -1; + } + + ls = pool_elt_at_index (lcm->locator_set_pool, p[0]); + if (!ls) + { + clib_warning ("locator-set with index %d doesn't exists", p[0]); + return -1; + } + + if (lcm->mreq_itr_rlocs == p[0]) + { + clib_warning ("Can't delete the locator-set used to constrain " + "the itr-rlocs in map-requests!"); + return -1; + } + + if (vec_len (lcm->locator_set_to_eids) != 0) + { + eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, p[0]); + if (vec_len (eid_indexes[0]) != 0) + { + clib_warning + ("Can't delete a locator that supports a mapping!"); + return -1; + } + } + + /* clean locator to locator-sets data */ + clean_locator_to_locator_set (lcm, p[0]); + + if (ls->local) + { + u32 it, lsi; + + vec_foreach_index (it, lcm->local_locator_set_indexes) + { + lsi = vec_elt (lcm->local_locator_set_indexes, it); + if (lsi == p[0]) + { + vec_del1 (lcm->local_locator_set_indexes, it); + break; + } + } + hash_unset_mem (lcm->locator_set_index_by_name, ls->name); + } + vec_free (ls->name); + vec_free (ls->locator_indices); + pool_put (lcm->locator_set_pool, ls); + } + return 0; +} + +int +vnet_lisp_rloc_probe_enable_disable (u8 is_enable) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + + lcm->rloc_probing = is_enable; + return 0; +} + +int +vnet_lisp_map_register_enable_disable (u8 is_enable) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + + lcm->map_registering = is_enable; + return 0; +} + +clib_error_t * +vnet_lisp_enable_disable (u8 is_enable) +{ + u32 vni, dp_table; + clib_error_t *error = 0; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + vnet_lisp_gpe_enable_disable_args_t _a, *a = &_a; + + a->is_en = is_enable; + error = vnet_lisp_gpe_enable_disable (a); + if (error) + { + return clib_error_return (0, "failed to %s data-plane!", + a->is_en ? "enable" : "disable"); + } + + if (is_enable) + { + /* enable all l2 and l3 ifaces */ + + /* *INDENT-OFF* */ + hash_foreach(vni, dp_table, lcm->table_id_by_vni, ({ + dp_add_del_iface(lcm, vni, 0, 1); + })); + hash_foreach(vni, dp_table, lcm->bd_id_by_vni, ({ + dp_add_del_iface(lcm, vni, /* is_l2 */ 1, 1); + })); + /* *INDENT-ON* */ + } + else + { + /* clear interface table */ + hash_free (lcm->fwd_entry_by_mapping_index); + pool_free (lcm->fwd_entry_pool); + } + + /* update global flag */ + lcm->is_enabled = is_enable; + + return 0; +} + +static clib_error_t * +lisp_enable_disable_command_fn (vlib_main_t * vm, unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + unformat_input_t _line_input, *line_input = &_line_input; + u8 is_enabled = 0; + u8 is_set = 0; + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "enable")) + { + is_set = 1; + is_enabled = 1; + } + else if (unformat (line_input, "disable")) + is_set = 1; + else + { + return clib_error_return (0, "parse error: '%U'", + format_unformat_error, line_input); + } + } + + if (!is_set) + return clib_error_return (0, "state not set"); + + vnet_lisp_enable_disable (is_enabled); + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_cp_enable_disable_command) = { + .path = "lisp", + .short_help = "lisp [enable|disable]", + .function = lisp_enable_disable_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +lisp_map_register_enable_disable_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + unformat_input_t _line_input, *line_input = &_line_input; + u8 is_enabled = 0; + u8 is_set = 0; + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "enable")) + { + is_set = 1; + is_enabled = 1; + } + else if (unformat (line_input, "disable")) + is_set = 1; + else + { + vlib_cli_output (vm, "parse error: '%U'", format_unformat_error, + line_input); + return 0; + } + } + + if (!is_set) + { + vlib_cli_output (vm, "state not set!"); + return 0; + } + + vnet_lisp_map_register_enable_disable (is_enabled); + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_map_register_enable_disable_command) = { + .path = "lisp map-register", + .short_help = "lisp map-register [enable|disable]", + .function = lisp_map_register_enable_disable_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +lisp_rloc_probe_enable_disable_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + unformat_input_t _line_input, *line_input = &_line_input; + u8 is_enabled = 0; + u8 is_set = 0; + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "enable")) + { + is_set = 1; + is_enabled = 1; + } + else if (unformat (line_input, "disable")) + is_set = 1; + else + { + vlib_cli_output (vm, "parse error: '%U'", format_unformat_error, + line_input); + return 0; + } + } + + if (!is_set) + { + vlib_cli_output (vm, "state not set!"); + return 0; + } + + vnet_lisp_rloc_probe_enable_disable (is_enabled); + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_rloc_probe_enable_disable_command) = { + .path = "lisp rloc-probe", + .short_help = "lisp rloc-probe [enable|disable]", + .function = lisp_rloc_probe_enable_disable_command_fn, +}; +/* *INDENT-ON* */ + +u8 +vnet_lisp_enable_disable_status (void) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + return lcm->is_enabled; +} + +static u8 * +format_lisp_status (u8 * s, va_list * args) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + return format (s, "%s", lcm->is_enabled ? "enabled" : "disabled"); +} + +static clib_error_t * +lisp_show_status_command_fn (vlib_main_t * vm, unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + u8 *msg = 0; + msg = format (msg, "feature: %U\ngpe: %U\n", + format_lisp_status, format_vnet_lisp_gpe_status); + vlib_cli_output (vm, "%v", msg); + vec_free (msg); + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_show_status_command) = { + .path = "show lisp status", + .short_help = "show lisp status", + .function = lisp_show_status_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +lisp_show_eid_table_map_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + hash_pair_t *p; + unformat_input_t _line_input, *line_input = &_line_input; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + uword *vni_table = 0; + u8 is_l2 = 0; + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "l2")) + { + vni_table = lcm->bd_id_by_vni; + is_l2 = 1; + } + else if (unformat (line_input, "l3")) + { + vni_table = lcm->table_id_by_vni; + is_l2 = 0; + } + else + return clib_error_return (0, "parse error: '%U'", + format_unformat_error, line_input); + } + + if (!vni_table) + { + vlib_cli_output (vm, "Error: expected l2|l3 param!\n"); + return 0; + } + + vlib_cli_output (vm, "%=10s%=10s", "VNI", is_l2 ? "BD" : "VRF"); + + /* *INDENT-OFF* */ + hash_foreach_pair (p, vni_table, + ({ + vlib_cli_output (vm, "%=10d%=10d", p->key, p->value[0]); + })); + /* *INDENT-ON* */ + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_show_eid_table_map_command) = { + .path = "show lisp eid-table map", + .short_help = "show lisp eid-table l2|l3", + .function = lisp_show_eid_table_map_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +lisp_add_del_locator_set_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + lisp_gpe_main_t *lgm = &lisp_gpe_main; + vnet_main_t *vnm = lgm->vnet_main; + unformat_input_t _line_input, *line_input = &_line_input; + u8 is_add = 1; + clib_error_t *error = 0; + u8 *locator_set_name = 0; + locator_t locator, *locators = 0; + vnet_lisp_add_del_locator_set_args_t _a, *a = &_a; + u32 ls_index = 0; + int rv = 0; + + memset (&locator, 0, sizeof (locator)); + memset (a, 0, sizeof (a[0])); + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "add %_%v%_", &locator_set_name)) + is_add = 1; + else if (unformat (line_input, "del %_%v%_", &locator_set_name)) + is_add = 0; + else if (unformat (line_input, "iface %U p %d w %d", + unformat_vnet_sw_interface, vnm, + &locator.sw_if_index, &locator.priority, + &locator.weight)) + { + locator.local = 1; + vec_add1 (locators, locator); + } + else + { + error = unformat_parse_error (line_input); + goto done; + } + } + + a->name = locator_set_name; + a->locators = locators; + a->is_add = is_add; + a->local = 1; + + rv = vnet_lisp_add_del_locator_set (a, &ls_index); + if (0 != rv) + { + error = clib_error_return (0, "failed to %s locator-set!", + is_add ? "add" : "delete"); + } + +done: + vec_free (locators); + if (locator_set_name) + vec_free (locator_set_name); + return error; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_cp_add_del_locator_set_command) = { + .path = "lisp locator-set", + .short_help = "lisp locator-set add/del <name> [iface <iface-name> " + "p <priority> w <weight>]", + .function = lisp_add_del_locator_set_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +lisp_add_del_locator_in_set_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + lisp_gpe_main_t *lgm = &lisp_gpe_main; + vnet_main_t *vnm = lgm->vnet_main; + unformat_input_t _line_input, *line_input = &_line_input; + u8 is_add = 1; + clib_error_t *error = 0; + u8 *locator_set_name = 0; + u8 locator_set_name_set = 0; + locator_t locator, *locators = 0; + vnet_lisp_add_del_locator_set_args_t _a, *a = &_a; + u32 ls_index = 0; + + memset (&locator, 0, sizeof (locator)); + memset (a, 0, sizeof (a[0])); + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "add")) + is_add = 1; + else if (unformat (line_input, "del")) + is_add = 0; + else if (unformat (line_input, "locator-set %_%v%_", &locator_set_name)) + locator_set_name_set = 1; + else if (unformat (line_input, "iface %U p %d w %d", + unformat_vnet_sw_interface, vnm, + &locator.sw_if_index, &locator.priority, + &locator.weight)) + { + locator.local = 1; + vec_add1 (locators, locator); + } + else + { + error = unformat_parse_error (line_input); + goto done; + } + } + + if (!locator_set_name_set) + { + error = clib_error_return (0, "locator_set name not set!"); + goto done; + } + + a->name = locator_set_name; + a->locators = locators; + a->is_add = is_add; + a->local = 1; + + vnet_lisp_add_del_locator (a, 0, &ls_index); + +done: + vec_free (locators); + vec_free (locator_set_name); + return error; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_cp_add_del_locator_in_set_command) = { + .path = "lisp locator", + .short_help = "lisp locator add/del locator-set <name> iface <iface-name> " + "p <priority> w <weight>", + .function = lisp_add_del_locator_in_set_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +lisp_cp_show_locator_sets_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + locator_set_t *lsit; + locator_t *loc; + u32 *locit; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + + vlib_cli_output (vm, "%s%=16s%=16s%=16s", "Locator-set", "Locator", + "Priority", "Weight"); + + /* *INDENT-OFF* */ + pool_foreach (lsit, lcm->locator_set_pool, + ({ + u8 * msg = 0; + int next_line = 0; + if (lsit->local) + { + msg = format (msg, "%v", lsit->name); + } + else + { + msg = format (msg, "<%s-%d>", "remote", lsit - lcm->locator_set_pool); + } + vec_foreach (locit, lsit->locator_indices) + { + if (next_line) + { + msg = format (msg, "%16s", " "); + } + loc = pool_elt_at_index (lcm->locator_pool, locit[0]); + if (loc->local) + msg = format (msg, "%16d%16d%16d\n", loc->sw_if_index, loc->priority, + loc->weight); + else + msg = format (msg, "%16U%16d%16d\n", format_ip_address, + &gid_address_ip(&loc->address), loc->priority, + loc->weight); + next_line = 1; + } + vlib_cli_output (vm, "%v", msg); + vec_free (msg); + })); + /* *INDENT-ON* */ + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_cp_show_locator_sets_command) = { + .path = "show lisp locator-set", + .short_help = "Shows locator-sets", + .function = lisp_cp_show_locator_sets_command_fn, +}; +/* *INDENT-ON* */ + +int +vnet_lisp_add_del_map_resolver (vnet_lisp_add_del_map_resolver_args_t * a) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + u32 i; + lisp_msmr_t _mr, *mr = &_mr; + + if (vnet_lisp_enable_disable_status () == 0) + { + clib_warning ("LISP is disabled!"); + return VNET_API_ERROR_LISP_DISABLED; + } + + if (a->is_add) + { + + if (get_map_resolver (&a->address)) + { + clib_warning ("map-resolver %U already exists!", format_ip_address, + &a->address); + return -1; + } + + memset (mr, 0, sizeof (*mr)); + ip_address_copy (&mr->address, &a->address); + vec_add1 (lcm->map_resolvers, *mr); + + if (vec_len (lcm->map_resolvers) == 1) + lcm->do_map_resolver_election = 1; + } + else + { + for (i = 0; i < vec_len (lcm->map_resolvers); i++) + { + mr = vec_elt_at_index (lcm->map_resolvers, i); + if (!ip_address_cmp (&mr->address, &a->address)) + { + if (!ip_address_cmp (&mr->address, &lcm->active_map_resolver)) + lcm->do_map_resolver_election = 1; + + vec_del1 (lcm->map_resolvers, i); + break; + } + } + } + return 0; +} + +static clib_error_t * +lisp_add_del_map_resolver_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + unformat_input_t _line_input, *line_input = &_line_input; + u8 is_add = 1, addr_set = 0; + ip_address_t ip_addr; + clib_error_t *error = 0; + int rv = 0; + vnet_lisp_add_del_map_resolver_args_t _a, *a = &_a; + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "add")) + is_add = 1; + else if (unformat (line_input, "del")) + is_add = 0; + else if (unformat (line_input, "%U", unformat_ip_address, &ip_addr)) + addr_set = 1; + else + { + error = unformat_parse_error (line_input); + goto done; + } + } + + if (!addr_set) + { + error = clib_error_return (0, "Map-resolver address must be set!"); + goto done; + } + + a->is_add = is_add; + a->address = ip_addr; + rv = vnet_lisp_add_del_map_resolver (a); + if (0 != rv) + { + error = clib_error_return (0, "failed to %s map-resolver!", + is_add ? "add" : "delete"); + } + +done: + return error; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_add_del_map_resolver_command) = { + .path = "lisp map-resolver", + .short_help = "lisp map-resolver add/del <ip_address>", + .function = lisp_add_del_map_resolver_command_fn, +}; +/* *INDENT-ON* */ + +int +vnet_lisp_add_del_mreq_itr_rlocs (vnet_lisp_add_del_mreq_itr_rloc_args_t * a) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + uword *p = 0; + + if (vnet_lisp_enable_disable_status () == 0) + { + clib_warning ("LISP is disabled!"); + return VNET_API_ERROR_LISP_DISABLED; + } + + if (a->is_add) + { + p = hash_get_mem (lcm->locator_set_index_by_name, a->locator_set_name); + if (!p) + { + clib_warning ("locator-set %v doesn't exist", a->locator_set_name); + return VNET_API_ERROR_INVALID_ARGUMENT; + } + + lcm->mreq_itr_rlocs = p[0]; + } + else + { + lcm->mreq_itr_rlocs = ~0; + } + + return 0; +} + +static clib_error_t * +lisp_add_del_mreq_itr_rlocs_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + unformat_input_t _line_input, *line_input = &_line_input; + u8 is_add = 1; + u8 *locator_set_name = 0; + clib_error_t *error = 0; + int rv = 0; + vnet_lisp_add_del_mreq_itr_rloc_args_t _a, *a = &_a; + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "del")) + is_add = 0; + else if (unformat (line_input, "add %_%v%_", &locator_set_name)) + is_add = 1; + else + { + error = unformat_parse_error (line_input); + goto done; + } + } + + a->is_add = is_add; + a->locator_set_name = locator_set_name; + rv = vnet_lisp_add_del_mreq_itr_rlocs (a); + if (0 != rv) + { + error = clib_error_return (0, "failed to %s map-request itr-rlocs!", + is_add ? "add" : "delete"); + } + + vec_free (locator_set_name); + +done: + return error; + +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_add_del_map_request_command) = { + .path = "lisp map-request itr-rlocs", + .short_help = "lisp map-request itr-rlocs add/del <locator_set_name>", + .function = lisp_add_del_mreq_itr_rlocs_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +lisp_show_mreq_itr_rlocs_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + locator_set_t *loc_set; + + vlib_cli_output (vm, "%=20s", "itr-rlocs"); + + if (~0 == lcm->mreq_itr_rlocs) + { + return 0; + } + + loc_set = pool_elt_at_index (lcm->locator_set_pool, lcm->mreq_itr_rlocs); + + vlib_cli_output (vm, "%=20s", loc_set->name); + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (lisp_show_map_request_command) = { + .path = "show lisp map-request itr-rlocs", + .short_help = "Shows map-request itr-rlocs", + .function = lisp_show_mreq_itr_rlocs_command_fn, +}; +/* *INDENT-ON* */ + +/* Statistics (not really errors) */ +#define foreach_lisp_cp_lookup_error \ +_(DROP, "drop") \ +_(MAP_REQUESTS_SENT, "map-request sent") + +static char *lisp_cp_lookup_error_strings[] = { +#define _(sym,string) string, + foreach_lisp_cp_lookup_error +#undef _ +}; + +typedef enum +{ +#define _(sym,str) LISP_CP_LOOKUP_ERROR_##sym, + foreach_lisp_cp_lookup_error +#undef _ + LISP_CP_LOOKUP_N_ERROR, +} lisp_cp_lookup_error_t; + +typedef enum +{ + LISP_CP_LOOKUP_NEXT_DROP, + LISP_CP_LOOKUP_N_NEXT, +} lisp_cp_lookup_next_t; + +typedef struct +{ + gid_address_t dst_eid; + ip_address_t map_resolver_ip; +} lisp_cp_lookup_trace_t; + +u8 * +format_lisp_cp_lookup_trace (u8 * s, va_list * args) +{ + CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); + CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); + lisp_cp_lookup_trace_t *t = va_arg (*args, lisp_cp_lookup_trace_t *); + + s = format (s, "LISP-CP-LOOKUP: map-resolver: %U destination eid %U", + format_ip_address, &t->map_resolver_ip, format_gid_address, + &t->dst_eid); + return s; +} + +int +get_mr_and_local_iface_ip (lisp_cp_main_t * lcm, ip_address_t * mr_ip, + ip_address_t * sloc) +{ + lisp_msmr_t *mrit; + ip_address_t *a; + + if (vec_len (lcm->map_resolvers) == 0) + { + clib_warning ("No map-resolver configured"); + return 0; + } + + /* find the first mr ip we have a route to and the ip of the + * iface that has a route to it */ + vec_foreach (mrit, lcm->map_resolvers) + { + a = &mrit->address; + if (0 != ip_fib_get_first_egress_ip_for_dst (lcm, a, sloc)) + { + ip_address_copy (mr_ip, a); + + /* also update globals */ + return 1; + } + } + + clib_warning ("Can't find map-resolver and local interface ip!"); + return 0; +} + +static gid_address_t * +build_itr_rloc_list (lisp_cp_main_t * lcm, locator_set_t * loc_set) +{ + void *addr; + u32 i; + locator_t *loc; + u32 *loc_indexp; + ip_interface_address_t *ia = 0; + gid_address_t gid_data, *gid = &gid_data; + gid_address_t *rlocs = 0; + ip_prefix_t *ippref = &gid_address_ippref (gid); + ip_address_t *rloc = &ip_prefix_addr (ippref); + + memset (gid, 0, sizeof (gid[0])); + gid_address_type (gid) = GID_ADDR_IP_PREFIX; + for (i = 0; i < vec_len (loc_set->locator_indices); i++) + { + loc_indexp = vec_elt_at_index (loc_set->locator_indices, i); + loc = pool_elt_at_index (lcm->locator_pool, loc_indexp[0]); + + /* Add ipv4 locators first TODO sort them */ + + /* *INDENT-OFF* */ + foreach_ip_interface_address (&lcm->im4->lookup_main, ia, + loc->sw_if_index, 1 /* unnumbered */, + ({ + addr = ip_interface_address_get_address (&lcm->im4->lookup_main, ia); + ip_address_set (rloc, addr, IP4); + ip_prefix_len (ippref) = 32; + ip_prefix_normalize (ippref); + vec_add1 (rlocs, gid[0]); + })); + + /* Add ipv6 locators */ + foreach_ip_interface_address (&lcm->im6->lookup_main, ia, + loc->sw_if_index, 1 /* unnumbered */, + ({ + addr = ip_interface_address_get_address (&lcm->im6->lookup_main, ia); + ip_address_set (rloc, addr, IP6); + ip_prefix_len (ippref) = 128; + ip_prefix_normalize (ippref); + vec_add1 (rlocs, gid[0]); + })); + /* *INDENT-ON* */ + + } + return rlocs; +} + +static vlib_buffer_t * +build_map_request (lisp_cp_main_t * lcm, gid_address_t * deid, + ip_address_t * sloc, ip_address_t * rloc, + gid_address_t * itr_rlocs, u64 * nonce_res, u32 * bi_res) +{ + vlib_buffer_t *b; + u32 bi; + vlib_main_t *vm = lcm->vlib_main; + + if (vlib_buffer_alloc (vm, &bi, 1) != 1) + { + clib_warning ("Can't allocate buffer for Map-Request!"); + return 0; + } + + b = vlib_get_buffer (vm, bi); + + /* leave some space for the encap headers */ + vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN); + + /* put lisp msg */ + lisp_msg_put_mreq (lcm, b, NULL, deid, itr_rlocs, 0 /* smr invoked */ , + 1 /* rloc probe */ , nonce_res); + + /* push outer ip header */ + pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc, + rloc); + + bi_res[0] = bi; + + return b; +} + +static vlib_buffer_t * +build_encapsulated_map_request (lisp_cp_main_t * lcm, + gid_address_t * seid, gid_address_t * deid, + locator_set_t * loc_set, ip_address_t * mr_ip, + ip_address_t * sloc, u8 is_smr_invoked, + u64 * nonce_res, u32 * bi_res) +{ + vlib_buffer_t *b; + u32 bi; + gid_address_t *rlocs = 0; + vlib_main_t *vm = lcm->vlib_main; + + if (vlib_buffer_alloc (vm, &bi, 1) != 1) + { + clib_warning ("Can't allocate buffer for Map-Request!"); + return 0; + } + + b = vlib_get_buffer (vm, bi); + + /* leave some space for the encap headers */ + vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN); + + /* get rlocs */ + rlocs = build_itr_rloc_list (lcm, loc_set); + + if (MR_MODE_SRC_DST == lcm->map_request_mode + && GID_ADDR_SRC_DST != gid_address_type (deid)) + { + gid_address_t sd; + memset (&sd, 0, sizeof (sd)); + build_src_dst (&sd, seid, deid); + lisp_msg_put_mreq (lcm, b, seid, &sd, rlocs, is_smr_invoked, + 0 /* rloc probe */ , nonce_res); + } + else + { + /* put lisp msg */ + lisp_msg_put_mreq (lcm, b, seid, deid, rlocs, is_smr_invoked, + 0 /* rloc probe */ , nonce_res); + } + + /* push ecm: udp-ip-lisp */ + lisp_msg_push_ecm (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, seid, deid); + + /* push outer ip header */ + pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc, + mr_ip); + + bi_res[0] = bi; + + vec_free (rlocs); + return b; +} + +static void +reset_pending_mr_counters (pending_map_request_t * r) +{ + r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME; + r->retries_num = 0; +} + +static int +elect_map_resolver (lisp_cp_main_t * lcm) +{ + lisp_msmr_t *mr; + + vec_foreach (mr, lcm->map_resolvers) + { + if (!mr->is_down) + { + ip_address_copy (&lcm->active_map_resolver, &mr->address); + lcm->do_map_resolver_election = 0; + return 1; + } + } + return 0; +} + +static void +free_map_register_records (mapping_t * maps) +{ + mapping_t *map; + vec_foreach (map, maps) vec_free (map->locators); + + vec_free (maps); +} + +static void +add_locators (lisp_cp_main_t * lcm, mapping_t * m, u32 locator_set_index, + ip_address_t * probed_loc) +{ + u32 *li; + locator_t *loc, new; + ip_interface_address_t *ia = 0; + void *addr; + ip_address_t *new_ip = &gid_address_ip (&new.address); + + m->locators = 0; + locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool, + locator_set_index); + vec_foreach (li, ls->locator_indices) + { + loc = pool_elt_at_index (lcm->locator_pool, li[0]); + new = loc[0]; + if (loc->local) + { + /* *INDENT-OFF* */ + foreach_ip_interface_address (&lcm->im4->lookup_main, ia, + loc->sw_if_index, 1 /* unnumbered */, + ({ + addr = ip_interface_address_get_address (&lcm->im4->lookup_main, + ia); + ip_address_set (new_ip, addr, IP4); + })); + + /* Add ipv6 locators */ + foreach_ip_interface_address (&lcm->im6->lookup_main, ia, + loc->sw_if_index, 1 /* unnumbered */, + ({ + addr = ip_interface_address_get_address (&lcm->im6->lookup_main, + ia); + ip_address_set (new_ip, addr, IP6); + })); + /* *INDENT-ON* */ + + if (probed_loc && ip_address_cmp (probed_loc, new_ip) == 0) + new.probed = 1; + } + vec_add1 (m->locators, new); + } +} + +static mapping_t * +build_map_register_record_list (lisp_cp_main_t * lcm) +{ + mapping_t *recs = 0, rec, *m; + + /* *INDENT-OFF* */ + pool_foreach(m, lcm->mapping_pool, + { + /* for now build only local mappings */ + if (!m->local) + continue; + + rec = m[0]; + add_locators (lcm, &rec, m->locator_set_index, NULL); + vec_add1 (recs, rec); + }); + /* *INDENT-ON* */ + + return recs; +} + +static int +update_map_register_auth_data (map_register_hdr_t * map_reg_hdr, + lisp_key_type_t key_id, u8 * key, + u16 auth_data_len, u32 msg_len) +{ + MREG_KEY_ID (map_reg_hdr) = clib_host_to_net_u16 (key_id); + MREG_AUTH_DATA_LEN (map_reg_hdr) = clib_host_to_net_u16 (auth_data_len); + + unsigned char *result = HMAC (get_encrypt_fcn (key_id), key, vec_len (key), + (unsigned char *) map_reg_hdr, msg_len, NULL, + NULL); + clib_memcpy (MREG_DATA (map_reg_hdr), result, auth_data_len); + + return 0; +} + +static vlib_buffer_t * +build_map_register (lisp_cp_main_t * lcm, ip_address_t * sloc, + ip_address_t * ms_ip, u64 * nonce_res, u8 want_map_notif, + mapping_t * records, lisp_key_type_t key_id, u8 * key, + u32 * bi_res) +{ + void *map_reg_hdr; + vlib_buffer_t *b; + u32 bi, auth_data_len = 0, msg_len = 0; + vlib_main_t *vm = lcm->vlib_main; + + if (vlib_buffer_alloc (vm, &bi, 1) != 1) + { + clib_warning ("Can't allocate buffer for Map-Register!"); + return 0; + } + + b = vlib_get_buffer (vm, bi); + + /* leave some space for the encap headers */ + vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN); + + auth_data_len = auth_data_len_by_key_id (key_id); + map_reg_hdr = lisp_msg_put_map_register (b, records, want_map_notif, + auth_data_len, nonce_res, + &msg_len); + + update_map_register_auth_data (map_reg_hdr, key_id, key, auth_data_len, + msg_len); + + /* push outer ip header */ + pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc, + ms_ip); + + bi_res[0] = bi; + return b; +} + +static int +get_egress_map_resolver_ip (lisp_cp_main_t * lcm, ip_address_t * ip) +{ + lisp_msmr_t *mr; + while (lcm->do_map_resolver_election + | (0 == ip_fib_get_first_egress_ip_for_dst (lcm, + &lcm->active_map_resolver, + ip))) + { + if (0 == elect_map_resolver (lcm)) + /* all map resolvers are down */ + { + /* restart MR checking by marking all of them up */ + vec_foreach (mr, lcm->map_resolvers) mr->is_down = 0; + return -1; + } + } + return 0; +} + +static int +send_rloc_probe (lisp_cp_main_t * lcm, gid_address_t * deid, + u32 local_locator_set_index, ip_address_t * sloc, + ip_address_t * rloc) +{ + locator_set_t *ls; + u32 bi; + vlib_buffer_t *b; + vlib_frame_t *f; + u64 nonce = 0; + u32 next_index, *to_next; + gid_address_t *itr_rlocs; + + ls = pool_elt_at_index (lcm->locator_set_pool, local_locator_set_index); + itr_rlocs = build_itr_rloc_list (lcm, ls); + + b = build_map_request (lcm, deid, sloc, rloc, itr_rlocs, &nonce, &bi); + vec_free (itr_rlocs); + if (!b) + return -1; + + vnet_buffer (b)->sw_if_index[VLIB_TX] = 0; + + next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ? + ip4_lookup_node.index : ip6_lookup_node.index; + + f = vlib_get_frame_to_node (lcm->vlib_main, next_index); + + /* Enqueue the packet */ + to_next = vlib_frame_vector_args (f); + to_next[0] = bi; + f->n_vectors = 1; + vlib_put_frame_to_node (lcm->vlib_main, next_index, f); + + hash_set (lcm->map_register_messages_by_nonce, nonce, 0); + return 0; +} + +static int +send_rloc_probes (lisp_cp_main_t * lcm) +{ + u8 lprio = 0; + mapping_t *lm; + fwd_entry_t *e; + locator_pair_t *lp; + u32 si; + + /* *INDENT-OFF* */ + pool_foreach (e, lcm->fwd_entry_pool, + { + if (vec_len (e->locator_pairs) == 0) + continue; + + si = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &e->leid); + if (~0 == si) + { + clib_warning ("internal error: cannot find local eid %U in " + "map-cache!", format_gid_address, &e->leid); + continue; + } + lm = pool_elt_at_index (lcm->mapping_pool, si); + + /* get the best (lowest) priority */ + lprio = e->locator_pairs[0].priority; + + /* send rloc-probe for pair(s) with the best remote locator priority */ + vec_foreach (lp, e->locator_pairs) + { + if (lp->priority != lprio) + break; + + /* get first remote locator */ + send_rloc_probe (lcm, &e->reid, lm->locator_set_index, &lp->lcl_loc, + &lp->rmt_loc); + } + }); + /* *INDENT-ON* */ + + return 0; +} + +static int +send_map_register (lisp_cp_main_t * lcm, u8 want_map_notif) +{ + u32 bi; + vlib_buffer_t *b; + ip_address_t sloc; + vlib_frame_t *f; + u64 nonce = 0; + u32 next_index, *to_next; + ip_address_t *ms = 0; + mapping_t *records, *r, *g; + + // TODO: support multiple map servers and do election + if (0 == vec_len (lcm->map_servers)) + return -1; + + ms = &lcm->map_servers[0].address; + + if (0 == ip_fib_get_first_egress_ip_for_dst (lcm, ms, &sloc)) + { + clib_warning ("no eligible interface address found for %U!", + format_ip_address, &lcm->map_servers[0]); + return -1; + } + + records = build_map_register_record_list (lcm); + if (!records) + return -1; + + vec_foreach (r, records) + { + u8 *key = r->key; + u8 key_id = r->key_id; + + if (!key) + continue; /* no secret key -> map-register cannot be sent */ + + g = 0; + // TODO: group mappings that share common key + vec_add1 (g, r[0]); + b = build_map_register (lcm, &sloc, ms, &nonce, want_map_notif, g, + key_id, key, &bi); + vec_free (g); + if (!b) + continue; + + vnet_buffer (b)->sw_if_index[VLIB_TX] = 0; + + next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ? + ip4_lookup_node.index : ip6_lookup_node.index; + + f = vlib_get_frame_to_node (lcm->vlib_main, next_index); + + /* Enqueue the packet */ + to_next = vlib_frame_vector_args (f); + to_next[0] = bi; + f->n_vectors = 1; + vlib_put_frame_to_node (lcm->vlib_main, next_index, f); + + hash_set (lcm->map_register_messages_by_nonce, nonce, 0); + } + free_map_register_records (records); + + return 0; +} + +#define send_encapsulated_map_request(lcm, seid, deid, smr) \ + _send_encapsulated_map_request(lcm, seid, deid, smr, 0) + +#define resend_encapsulated_map_request(lcm, seid, deid, smr) \ + _send_encapsulated_map_request(lcm, seid, deid, smr, 1) + +static int +_send_encapsulated_map_request (lisp_cp_main_t * lcm, + gid_address_t * seid, gid_address_t * deid, + u8 is_smr_invoked, u8 is_resend) +{ + u32 next_index, bi = 0, *to_next, map_index; + vlib_buffer_t *b; + vlib_frame_t *f; + u64 nonce = 0; + locator_set_t *loc_set; + mapping_t *map; + pending_map_request_t *pmr, *duplicate_pmr = 0; + ip_address_t sloc; + u32 ls_index; + + /* if there is already a pending request remember it */ + + /* *INDENT-OFF* */ + pool_foreach(pmr, lcm->pending_map_requests_pool, + ({ + if (!gid_address_cmp (&pmr->src, seid) + && !gid_address_cmp (&pmr->dst, deid)) + { + duplicate_pmr = pmr; + break; + } + })); + /* *INDENT-ON* */ + + if (!is_resend && duplicate_pmr) + { + /* don't send the request if there is a pending map request already */ + return 0; + } + + /* get locator-set for seid */ + if (!lcm->lisp_pitr) + { + map_index = gid_dictionary_lookup (&lcm->mapping_index_by_gid, seid); + if (map_index == ~0) + { + clib_warning ("No local mapping found in eid-table for %U!", + format_gid_address, seid); + return -1; + } + + map = pool_elt_at_index (lcm->mapping_pool, map_index); + + if (!map->local) + { + clib_warning + ("Mapping found for src eid %U is not marked as local!", + format_gid_address, seid); + return -1; + } + ls_index = map->locator_set_index; + } + else + { + map_index = lcm->pitr_map_index; + map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index); + ls_index = map->locator_set_index; + } + + /* overwrite locator set if map-request itr-rlocs configured */ + if (~0 != lcm->mreq_itr_rlocs) + { + ls_index = lcm->mreq_itr_rlocs; + } + + loc_set = pool_elt_at_index (lcm->locator_set_pool, ls_index); + + if (get_egress_map_resolver_ip (lcm, &sloc) < 0) + { + if (duplicate_pmr) + duplicate_pmr->to_be_removed = 1; + return -1; + } + + /* build the encapsulated map request */ + b = build_encapsulated_map_request (lcm, seid, deid, loc_set, + &lcm->active_map_resolver, + &sloc, is_smr_invoked, &nonce, &bi); + + if (!b) + return -1; + + /* set fib index to default and lookup node */ + vnet_buffer (b)->sw_if_index[VLIB_TX] = 0; + next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ? + ip4_lookup_node.index : ip6_lookup_node.index; + + f = vlib_get_frame_to_node (lcm->vlib_main, next_index); + + /* Enqueue the packet */ + to_next = vlib_frame_vector_args (f); + to_next[0] = bi; + f->n_vectors = 1; + vlib_put_frame_to_node (lcm->vlib_main, next_index, f); + + if (duplicate_pmr) + /* if there is a pending request already update it */ + { + if (clib_fifo_elts (duplicate_pmr->nonces) >= PENDING_MREQ_QUEUE_LEN) + { + /* remove the oldest nonce */ + u64 CLIB_UNUSED (tmp), *nonce_del; + nonce_del = clib_fifo_head (duplicate_pmr->nonces); + hash_unset (lcm->pending_map_requests_by_nonce, nonce_del[0]); + clib_fifo_sub1 (duplicate_pmr->nonces, tmp); + } + + clib_fifo_add1 (duplicate_pmr->nonces, nonce); + hash_set (lcm->pending_map_requests_by_nonce, nonce, + duplicate_pmr - lcm->pending_map_requests_pool); + } + else + { + /* add map-request to pending requests table */ + pool_get (lcm->pending_map_requests_pool, pmr); + memset (pmr, 0, sizeof (*pmr)); + gid_address_copy (&pmr->src, seid); + gid_address_copy (&pmr->dst, deid); + clib_fifo_add1 (pmr->nonces, nonce); + pmr->is_smr_invoked = is_smr_invoked; + reset_pending_mr_counters (pmr); + hash_set (lcm->pending_map_requests_by_nonce, nonce, + pmr - lcm->pending_map_requests_pool); + } + + return 0; +} + +static void +get_src_and_dst_ip (void *hdr, ip_address_t * src, ip_address_t * dst) +{ + ip4_header_t *ip4 = hdr; + ip6_header_t *ip6; + + if ((ip4->ip_version_and_header_length & 0xF0) == 0x40) + { + ip_address_set (src, &ip4->src_address, IP4); + ip_address_set (dst, &ip4->dst_address, IP4); + } + else + { + ip6 = hdr; + ip_address_set (src, &ip6->src_address, IP6); + ip_address_set (dst, &ip6->dst_address, IP6); + } +} + +static u32 +lisp_get_vni_from_buffer_ip (lisp_cp_main_t * lcm, vlib_buffer_t * b, + u8 version) +{ + uword *vnip; + u32 vni = ~0, table_id = ~0; + + table_id = fib_table_get_table_id_for_sw_if_index ((version == + IP4 ? FIB_PROTOCOL_IP4 : + FIB_PROTOCOL_IP6), + vnet_buffer + (b)->sw_if_index + [VLIB_RX]); + + vnip = hash_get (lcm->vni_by_table_id, table_id); + if (vnip) + vni = vnip[0]; + else + clib_warning ("vrf %d is not mapped to any vni!", table_id); + + return vni; +} + +always_inline u32 +lisp_get_vni_from_buffer_eth (lisp_cp_main_t * lcm, vlib_buffer_t * b) +{ + uword *vnip; + u32 vni = ~0; + u32 sw_if_index0; + + l2input_main_t *l2im = &l2input_main; + l2_input_config_t *config; + l2_bridge_domain_t *bd_config; + + sw_if_index0 = vnet_buffer (b)->sw_if_index[VLIB_RX]; + config = vec_elt_at_index (l2im->configs, sw_if_index0); + bd_config = vec_elt_at_index (l2im->bd_configs, config->bd_index); + + vnip = hash_get (lcm->vni_by_bd_id, bd_config->bd_id); + if (vnip) + vni = vnip[0]; + else + clib_warning ("bridge domain %d is not mapped to any vni!", + config->bd_index); + + return vni; +} + +always_inline void +get_src_and_dst_eids_from_buffer (lisp_cp_main_t * lcm, vlib_buffer_t * b, + gid_address_t * src, gid_address_t * dst) +{ + u32 vni = 0; + u16 type; + + memset (src, 0, sizeof (*src)); + memset (dst, 0, sizeof (*dst)); + type = vnet_buffer (b)->lisp.overlay_afi; + + if (LISP_AFI_IP == type || LISP_AFI_IP6 == type) + { + ip4_header_t *ip; + u8 version, preflen; + + gid_address_type (src) = GID_ADDR_IP_PREFIX; + gid_address_type (dst) = GID_ADDR_IP_PREFIX; + + ip = vlib_buffer_get_current (b); + get_src_and_dst_ip (ip, &gid_address_ip (src), &gid_address_ip (dst)); + + version = gid_address_ip_version (src); + preflen = ip_address_max_len (version); + gid_address_ippref_len (src) = preflen; + gid_address_ippref_len (dst) = preflen; + + vni = lisp_get_vni_from_buffer_ip (lcm, b, version); + gid_address_vni (dst) = vni; + gid_address_vni (src) = vni; + } + else if (LISP_AFI_MAC == type) + { + ethernet_header_t *eh; + + eh = vlib_buffer_get_current (b); + + gid_address_type (src) = GID_ADDR_MAC; + gid_address_type (dst) = GID_ADDR_MAC; + mac_copy (&gid_address_mac (src), eh->src_address); + mac_copy (&gid_address_mac (dst), eh->dst_address); + + /* get vni */ + vni = lisp_get_vni_from_buffer_eth (lcm, b); + + gid_address_vni (dst) = vni; + gid_address_vni (src) = vni; + } +} + +static uword +lisp_cp_lookup_inline (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame, int overlay) +{ + u32 *from, *to_next_drop, di, si; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + u32 pkts_mapped = 0; + uword n_left_from, n_left_to_next_drop; + + from = vlib_frame_vector_args (from_frame); + n_left_from = from_frame->n_vectors; + + while (n_left_from > 0) + { + vlib_get_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP, + to_next_drop, n_left_to_next_drop); + + while (n_left_from > 0 && n_left_to_next_drop > 0) + { + u32 pi0; + vlib_buffer_t *b0; + gid_address_t src, dst; + + pi0 = from[0]; + from += 1; + n_left_from -= 1; + to_next_drop[0] = pi0; + to_next_drop += 1; + n_left_to_next_drop -= 1; + + b0 = vlib_get_buffer (vm, pi0); + b0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP]; + vnet_buffer (b0)->lisp.overlay_afi = overlay; + + /* src/dst eid pair */ + get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst); + + /* if we have remote mapping for destination already in map-chache + add forwarding tunnel directly. If not send a map-request */ + di = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid, &dst, + &src); + if (~0 != di) + { + mapping_t *m = vec_elt_at_index (lcm->mapping_pool, di); + /* send a map-request also in case of negative mapping entry + with corresponding action */ + if (m->action == LISP_SEND_MAP_REQUEST) + { + /* send map-request */ + queue_map_request (&src, &dst, 0 /* smr_invoked */ , + 0 /* is_resend */ ); + pkts_mapped++; + } + else + { + si = gid_dictionary_lookup (&lcm->mapping_index_by_gid, + &src); + if (~0 != si) + { + dp_add_fwd_entry (lcm, si, di); + } + } + } + else + { + /* send map-request */ + queue_map_request (&src, &dst, 0 /* smr_invoked */ , + 0 /* is_resend */ ); + pkts_mapped++; + } + + if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, b0, + sizeof (*tr)); + + memset (tr, 0, sizeof (*tr)); + gid_address_copy (&tr->dst_eid, &dst); + ip_address_copy (&tr->map_resolver_ip, + &lcm->active_map_resolver); + } + gid_address_free (&dst); + gid_address_free (&src); + } + + vlib_put_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP, + n_left_to_next_drop); + } + vlib_node_increment_counter (vm, node->node_index, + LISP_CP_LOOKUP_ERROR_MAP_REQUESTS_SENT, + pkts_mapped); + return from_frame->n_vectors; +} + +static uword +lisp_cp_lookup_ip4 (vlib_main_t * vm, + vlib_node_runtime_t * node, vlib_frame_t * from_frame) +{ + return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP)); +} + +static uword +lisp_cp_lookup_ip6 (vlib_main_t * vm, + vlib_node_runtime_t * node, vlib_frame_t * from_frame) +{ + return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP6)); +} + +static uword +lisp_cp_lookup_l2 (vlib_main_t * vm, + vlib_node_runtime_t * node, vlib_frame_t * from_frame) +{ + return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_MAC)); +} + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (lisp_cp_lookup_ip4_node) = { + .function = lisp_cp_lookup_ip4, + .name = "lisp-cp-lookup-ip4", + .vector_size = sizeof (u32), + .format_trace = format_lisp_cp_lookup_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + + .n_errors = LISP_CP_LOOKUP_N_ERROR, + .error_strings = lisp_cp_lookup_error_strings, + + .n_next_nodes = LISP_CP_LOOKUP_N_NEXT, + + .next_nodes = { + [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop", + }, +}; +/* *INDENT-ON* */ + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (lisp_cp_lookup_ip6_node) = { + .function = lisp_cp_lookup_ip6, + .name = "lisp-cp-lookup-ip6", + .vector_size = sizeof (u32), + .format_trace = format_lisp_cp_lookup_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + + .n_errors = LISP_CP_LOOKUP_N_ERROR, + .error_strings = lisp_cp_lookup_error_strings, + + .n_next_nodes = LISP_CP_LOOKUP_N_NEXT, + + .next_nodes = { + [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop", + }, +}; +/* *INDENT-ON* */ + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (lisp_cp_lookup_l2_node) = { + .function = lisp_cp_lookup_l2, + .name = "lisp-cp-lookup-l2", + .vector_size = sizeof (u32), + .format_trace = format_lisp_cp_lookup_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + + .n_errors = LISP_CP_LOOKUP_N_ERROR, + .error_strings = lisp_cp_lookup_error_strings, + + .n_next_nodes = LISP_CP_LOOKUP_N_NEXT, + + .next_nodes = { + [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop", + }, +}; +/* *INDENT-ON* */ + +/* lisp_cp_input statistics */ +#define foreach_lisp_cp_input_error \ +_(DROP, "drop") \ +_(MAP_REPLIES_RECEIVED, "map-replies received") + +static char *lisp_cp_input_error_strings[] = { +#define _(sym,string) string, + foreach_lisp_cp_input_error +#undef _ +}; + +typedef enum +{ +#define _(sym,str) LISP_CP_INPUT_ERROR_##sym, + foreach_lisp_cp_input_error +#undef _ + LISP_CP_INPUT_N_ERROR, +} lisp_cp_input_error_t; + +typedef enum +{ + LISP_CP_INPUT_NEXT_DROP, + LISP_CP_INPUT_N_NEXT, +} lisp_cp_input_next_t; + +typedef struct +{ + gid_address_t dst_eid; + ip4_address_t map_resolver_ip; +} lisp_cp_input_trace_t; + +u8 * +format_lisp_cp_input_trace (u8 * s, va_list * args) +{ + CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); + CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); + CLIB_UNUSED (lisp_cp_input_trace_t * t) = + va_arg (*args, lisp_cp_input_trace_t *); + + s = format (s, "LISP-CP-INPUT: TODO"); + return s; +} + +static void +remove_expired_mapping (lisp_cp_main_t * lcm, u32 mi) +{ + mapping_t *m; + + m = pool_elt_at_index (lcm->mapping_pool, mi); + lisp_add_del_adjacency (lcm, 0, &m->eid, 0 /* is_add */ ); + vnet_lisp_add_del_mapping (&m->eid, 0, 0, 0, ~0, 0 /* is_add */ , + 0 /* is_static */ , 0); + mapping_delete_timer (lcm, mi); +} + +static void +mapping_start_expiration_timer (lisp_cp_main_t * lcm, u32 mi, + f64 expiration_time) +{ + mapping_t *m; + u64 now = clib_cpu_time_now (); + u64 cpu_cps = lcm->vlib_main->clib_time.clocks_per_second; + u64 exp_clock_time = now + expiration_time * cpu_cps; + + m = pool_elt_at_index (lcm->mapping_pool, mi); + + m->timer_set = 1; + timing_wheel_insert (&lcm->wheel, exp_clock_time, mi); +} + +static void +map_records_arg_free (map_records_arg_t * a) +{ + mapping_t *m; + vec_foreach (m, a->mappings) + { + vec_free (m->locators); + gid_address_free (&m->eid); + } + + clib_mem_free (a); +} + +void * +process_map_reply (map_records_arg_t * a) +{ + mapping_t *m; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + u32 dst_map_index = 0; + pending_map_request_t *pmr; + u64 *noncep; + uword *pmr_index; + + if (a->is_rloc_probe) + goto done; + + /* Check pending requests table and nonce */ + pmr_index = hash_get (lcm->pending_map_requests_by_nonce, a->nonce); + if (!pmr_index) + { + clib_warning ("No pending map-request entry with nonce %lu!", a->nonce); + goto done; + } + pmr = pool_elt_at_index (lcm->pending_map_requests_pool, pmr_index[0]); + + vec_foreach (m, a->mappings) + { + /* insert/update mappings cache */ + vnet_lisp_add_del_mapping (&m->eid, m->locators, m->action, + m->authoritative, m->ttl, + 1, 0 /* is_static */ , &dst_map_index); + + /* try to program forwarding only if mapping saved or updated */ + if ((u32) ~ 0 != dst_map_index) + { + lisp_add_del_adjacency (lcm, &pmr->src, &m->eid, 1); + if ((u32) ~ 0 != m->ttl) + mapping_start_expiration_timer (lcm, dst_map_index, m->ttl * 60); + } + } + + /* remove pending map request entry */ + + /* *INDENT-OFF* */ + clib_fifo_foreach (noncep, pmr->nonces, ({ + hash_unset(lcm->pending_map_requests_by_nonce, noncep[0]); + })); + /* *INDENT-ON* */ + + clib_fifo_free (pmr->nonces); + pool_put (lcm->pending_map_requests_pool, pmr); + +done: + map_records_arg_free (a); + return 0; +} + +static int +is_auth_data_valid (map_notify_hdr_t * h, u32 msg_len, + lisp_key_type_t key_id, u8 * key) +{ + u8 *auth_data = 0; + u16 auth_data_len; + int result; + + auth_data_len = auth_data_len_by_key_id (key_id); + if ((u16) ~ 0 == auth_data_len) + { + clib_warning ("invalid length for key_id %d!", key_id); + return 0; + } + + /* save auth data */ + vec_validate (auth_data, auth_data_len - 1); + clib_memcpy (auth_data, MNOTIFY_DATA (h), auth_data_len); + + /* clear auth data */ + memset (MNOTIFY_DATA (h), 0, auth_data_len); + + /* get hash of the message */ + unsigned char *code = HMAC (get_encrypt_fcn (key_id), key, vec_len (key), + (unsigned char *) h, msg_len, NULL, NULL); + + result = memcmp (code, auth_data, auth_data_len); + + vec_free (auth_data); + + return !result; +} + +static void +process_map_notify (map_records_arg_t * a) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + uword *pmr_index; + + pmr_index = hash_get (lcm->map_register_messages_by_nonce, a->nonce); + if (!pmr_index) + { + clib_warning ("No pending map-register entry with nonce %lu!", + a->nonce); + return; + } + + map_records_arg_free (a); + hash_unset (lcm->map_register_messages_by_nonce, a->nonce); +} + +static mapping_t * +get_mapping (lisp_cp_main_t * lcm, gid_address_t * e) +{ + u32 mi; + + mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, e); + if (~0 == mi) + { + clib_warning ("eid %U not found in map-cache!", unformat_gid_address, + e); + return 0; + } + return pool_elt_at_index (lcm->mapping_pool, mi); +} + +/** + * When map-notify is received it is necessary that all EIDs in the record + * list share common key. The key is then used to verify authentication + * data in map-notify message. + */ +static int +map_record_integrity_check (lisp_cp_main_t * lcm, mapping_t * maps, + u32 key_id, u8 ** key_out) +{ + u32 i, len = vec_len (maps); + mapping_t *m; + + /* get key of the first mapping */ + m = get_mapping (lcm, &maps[0].eid); + if (!m || !m->key) + return -1; + + key_out[0] = m->key; + + for (i = 1; i < len; i++) + { + m = get_mapping (lcm, &maps[i].eid); + if (!m || !m->key) + return -1; + + if (key_id != m->key_id || vec_cmp (m->key, key_out[0])) + { + clib_warning ("keys does not match! %v, %v", key_out[0], m->key); + return -1; + } + } + return 0; +} + +static int +parse_map_records (vlib_buffer_t * b, map_records_arg_t * a, u8 count) +{ + locator_t *locators = 0; + u32 i, len; + gid_address_t deid; + mapping_t m; + locator_t *loc; + + /* parse record eid */ + for (i = 0; i < count; i++) + { + len = lisp_msg_parse_mapping_record (b, &deid, &locators, NULL); + if (len == ~0) + { + clib_warning ("Failed to parse mapping record!"); + vec_foreach (loc, locators) locator_free (loc); + vec_free (locators); + return -1; + } + + m.locators = locators; + gid_address_copy (&m.eid, &deid); + vec_add1 (a->mappings, m); + } + + return 0; +} + +static map_records_arg_t * +parse_map_notify (vlib_buffer_t * b) +{ + int rc = 0; + map_notify_hdr_t *mnotif_hdr; + lisp_key_type_t key_id; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + u8 *key = 0; + gid_address_t deid; + u16 auth_data_len = 0; + u8 record_count; + map_records_arg_t *a = clib_mem_alloc (sizeof (*a)); + + memset (a, 0, sizeof (*a)); + mnotif_hdr = vlib_buffer_get_current (b); + vlib_buffer_pull (b, sizeof (*mnotif_hdr)); + memset (&deid, 0, sizeof (deid)); + + a->nonce = MNOTIFY_NONCE (mnotif_hdr); + key_id = clib_net_to_host_u16 (MNOTIFY_KEY_ID (mnotif_hdr)); + auth_data_len = auth_data_len_by_key_id (key_id); + + /* advance buffer by authentication data */ + vlib_buffer_pull (b, auth_data_len); + + record_count = MNOTIFY_REC_COUNT (mnotif_hdr); + rc = parse_map_records (b, a, record_count); + if (rc != 0) + { + map_records_arg_free (a); + return 0; + } + + rc = map_record_integrity_check (lcm, a->mappings, key_id, &key); + if (rc != 0) + { + map_records_arg_free (a); + return 0; + } + + /* verify authentication data */ + if (!is_auth_data_valid (mnotif_hdr, vlib_buffer_get_tail (b) + - (u8 *) mnotif_hdr, key_id, key)) + { + clib_warning ("Map-notify auth data verification failed for nonce %lu!", + a->nonce); + map_records_arg_free (a); + return 0; + } + return a; +} + +static vlib_buffer_t * +build_map_reply (lisp_cp_main_t * lcm, ip_address_t * sloc, + ip_address_t * dst, u64 nonce, u8 probe_bit, + mapping_t * records, u16 dst_port, u32 * bi_res) +{ + vlib_buffer_t *b; + u32 bi; + vlib_main_t *vm = lcm->vlib_main; + + if (vlib_buffer_alloc (vm, &bi, 1) != 1) + { + clib_warning ("Can't allocate buffer for Map-Register!"); + return 0; + } + + b = vlib_get_buffer (vm, bi); + + /* leave some space for the encap headers */ + vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN); + + lisp_msg_put_map_reply (b, records, nonce, probe_bit); + + /* push outer ip header */ + pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, dst_port, sloc, dst); + + bi_res[0] = bi; + return b; +} + +static int +send_map_reply (lisp_cp_main_t * lcm, u32 mi, ip_address_t * dst, + u8 probe_bit, u64 nonce, u16 dst_port, + ip_address_t * probed_loc) +{ + ip_address_t src; + u32 bi; + vlib_buffer_t *b; + vlib_frame_t *f; + u32 next_index, *to_next; + mapping_t *records = 0, *m; + + m = pool_elt_at_index (lcm->mapping_pool, mi); + if (!m) + return -1; + + vec_add1 (records, m[0]); + add_locators (lcm, &records[0], m->locator_set_index, probed_loc); + memset (&src, 0, sizeof (src)); + + if (!ip_fib_get_first_egress_ip_for_dst (lcm, dst, &src)) + { + clib_warning ("can't find inteface address for %U", format_ip_address, + dst); + return -1; + } + + b = build_map_reply (lcm, &src, dst, nonce, probe_bit, records, dst_port, + &bi); + if (!b) + return -1; + free_map_register_records (records); + + vnet_buffer (b)->sw_if_index[VLIB_TX] = 0; + next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ? + ip4_lookup_node.index : ip6_lookup_node.index; + + f = vlib_get_frame_to_node (lcm->vlib_main, next_index); + + /* Enqueue the packet */ + to_next = vlib_frame_vector_args (f); + to_next[0] = bi; + f->n_vectors = 1; + vlib_put_frame_to_node (lcm->vlib_main, next_index, f); + return 0; +} + +void +process_map_request (vlib_main_t * vm, lisp_cp_main_t * lcm, + vlib_buffer_t * b) +{ + u8 *ip_hdr = 0, *udp_hdr; + ip4_header_t *ip4; + ip6_header_t *ip6; + ip_address_t *dst_loc = 0, probed_loc, src_loc; + mapping_t m; + map_request_hdr_t *mreq_hdr; + gid_address_t src, dst; + u64 nonce; + u32 i, len = 0; + gid_address_t *itr_rlocs = 0; + + mreq_hdr = vlib_buffer_get_current (b); + + // TODO ugly workaround to find out whether LISP is carried by ip4 or 6 + // and needs to be fixed + udp_hdr = (u8 *) vlib_buffer_get_current (b) - sizeof (udp_header_t); + ip4 = (ip4_header_t *) (udp_hdr - sizeof (ip4_header_t)); + ip6 = (ip6_header_t *) (udp_hdr - sizeof (ip6_header_t)); + + if ((ip4->ip_version_and_header_length & 0xF0) == 0x40) + ip_hdr = (u8 *) ip4; + else + { + u32 flags = clib_net_to_host_u32 + (ip6->ip_version_traffic_class_and_flow_label); + if ((flags & 0xF0000000) == 0x60000000) + ip_hdr = (u8 *) ip6; + else + { + clib_warning ("internal error: cannot determine whether packet " + "is ip4 or 6!"); + return; + } + } + + vlib_buffer_pull (b, sizeof (*mreq_hdr)); + + nonce = MREQ_NONCE (mreq_hdr); + + if (!MREQ_SMR (mreq_hdr) && !MREQ_RLOC_PROBE (mreq_hdr)) + { + clib_warning + ("Only SMR Map-Requests and RLOC probe supported for now!"); + return; + } + + /* parse src eid */ + len = lisp_msg_parse_addr (b, &src); + if (len == ~0) + return; + + len = lisp_msg_parse_itr_rlocs (b, &itr_rlocs, + MREQ_ITR_RLOC_COUNT (mreq_hdr) + 1); + if (len == ~0) + return; + + /* parse eid records and send SMR-invoked map-requests */ + for (i = 0; i < MREQ_REC_COUNT (mreq_hdr); i++) + { + memset (&dst, 0, sizeof (dst)); + len = lisp_msg_parse_eid_rec (b, &dst); + if (len == ~0) + { + clib_warning ("Can't parse map-request EID-record"); + goto done; + } + + if (MREQ_SMR (mreq_hdr)) + { + /* send SMR-invoked map-requests */ + queue_map_request (&dst, &src, 1 /* invoked */ , 0 /* resend */ ); + } + else if (MREQ_RLOC_PROBE (mreq_hdr)) + { + memset (&m, 0, sizeof (m)); + u32 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst); + + // TODO: select best locator; for now use the first one + dst_loc = &gid_address_ip (&itr_rlocs[0]); + + /* get src/dst IP addresses */ + get_src_and_dst_ip (ip_hdr, &src_loc, &probed_loc); + + // TODO get source port from buffer + u16 src_port = LISP_CONTROL_PORT; + + send_map_reply (lcm, mi, dst_loc, 1 /* probe-bit */ , nonce, + src_port, &probed_loc); + } + } + +done: + vec_free (itr_rlocs); +} + +static map_records_arg_t * +parse_map_reply (vlib_buffer_t * b) +{ + locator_t probed; + gid_address_t deid; + void *h; + u32 i, len = 0; + mapping_t m; + map_reply_hdr_t *mrep_hdr; + map_records_arg_t *a = clib_mem_alloc (sizeof (*a)); + memset (a, 0, sizeof (*a)); + locator_t *locators; + + mrep_hdr = vlib_buffer_get_current (b); + a->nonce = MREP_NONCE (mrep_hdr); + a->is_rloc_probe = MREP_RLOC_PROBE (mrep_hdr); + vlib_buffer_pull (b, sizeof (*mrep_hdr)); + + for (i = 0; i < MREP_REC_COUNT (mrep_hdr); i++) + { + memset (&m, 0, sizeof (m)); + locators = 0; + h = vlib_buffer_get_current (b); + + m.ttl = clib_net_to_host_u32 (MAP_REC_TTL (h)); + m.action = MAP_REC_ACTION (h); + m.authoritative = MAP_REC_AUTH (h); + + len = lisp_msg_parse_mapping_record (b, &deid, &locators, &probed); + if (len == ~0) + { + clib_warning ("Failed to parse mapping record!"); + map_records_arg_free (a); + return 0; + } + + m.locators = locators; + gid_address_copy (&m.eid, &deid); + vec_add1 (a->mappings, m); + } + return a; +} + +static void +queue_map_reply_for_processing (map_records_arg_t * a) +{ + vl_api_rpc_call_main_thread (process_map_reply, (u8 *) a, sizeof (a)); +} + +static void +queue_map_notify_for_processing (map_records_arg_t * a) +{ + vl_api_rpc_call_main_thread (process_map_notify, (u8 *) a, sizeof (a[0])); +} + +static uword +lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + u32 n_left_from, *from, *to_next_drop; + lisp_msg_type_e type; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + map_records_arg_t *a; + + from = vlib_frame_vector_args (from_frame); + n_left_from = from_frame->n_vectors; + + + while (n_left_from > 0) + { + u32 n_left_to_next_drop; + + vlib_get_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP, + to_next_drop, n_left_to_next_drop); + while (n_left_from > 0 && n_left_to_next_drop > 0) + { + u32 bi0; + vlib_buffer_t *b0; + + bi0 = from[0]; + from += 1; + n_left_from -= 1; + to_next_drop[0] = bi0; + to_next_drop += 1; + n_left_to_next_drop -= 1; + + b0 = vlib_get_buffer (vm, bi0); + + type = lisp_msg_type (vlib_buffer_get_current (b0)); + switch (type) + { + case LISP_MAP_REPLY: + a = parse_map_reply (b0); + if (a) + queue_map_reply_for_processing (a); + break; + case LISP_MAP_REQUEST: + process_map_request (vm, lcm, b0); + break; + case LISP_MAP_NOTIFY: + a = parse_map_notify (b0); + if (a) + queue_map_notify_for_processing (a); + break; + default: + clib_warning ("Unsupported LISP message type %d", type); + break; + } + + b0->error = node->errors[LISP_CP_INPUT_ERROR_DROP]; + + if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + + } + } + + vlib_put_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP, + n_left_to_next_drop); + } + return from_frame->n_vectors; +} + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (lisp_cp_input_node) = { + .function = lisp_cp_input, + .name = "lisp-cp-input", + .vector_size = sizeof (u32), + .format_trace = format_lisp_cp_input_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + + .n_errors = LISP_CP_INPUT_N_ERROR, + .error_strings = lisp_cp_input_error_strings, + + .n_next_nodes = LISP_CP_INPUT_N_NEXT, + + .next_nodes = { + [LISP_CP_INPUT_NEXT_DROP] = "error-drop", + }, +}; +/* *INDENT-ON* */ + +clib_error_t * +lisp_cp_init (vlib_main_t * vm) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + clib_error_t *error = 0; + + if ((error = vlib_call_init_function (vm, lisp_gpe_init))) + return error; + + lcm->im4 = &ip4_main; + lcm->im6 = &ip6_main; + lcm->vlib_main = vm; + lcm->vnet_main = vnet_get_main (); + lcm->mreq_itr_rlocs = ~0; + lcm->lisp_pitr = 0; + memset (&lcm->active_map_resolver, 0, sizeof (lcm->active_map_resolver)); + + gid_dictionary_init (&lcm->mapping_index_by_gid); + lcm->do_map_resolver_election = 1; + lcm->map_request_mode = MR_MODE_DST_ONLY; + + /* default vrf mapped to vni 0 */ + hash_set (lcm->table_id_by_vni, 0, 0); + hash_set (lcm->vni_by_table_id, 0, 0); + + udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp, + lisp_cp_input_node.index, 1 /* is_ip4 */ ); + udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp6, + lisp_cp_input_node.index, 0 /* is_ip4 */ ); + + u64 now = clib_cpu_time_now (); + timing_wheel_init (&lcm->wheel, now, vm->clib_time.clocks_per_second); + return 0; +} + +static void * +send_map_request_thread_fn (void *arg) +{ + map_request_args_t *a = arg; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + + if (a->is_resend) + resend_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked); + else + send_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked); + + return 0; +} + +static int +queue_map_request (gid_address_t * seid, gid_address_t * deid, + u8 smr_invoked, u8 is_resend) +{ + map_request_args_t a; + + a.is_resend = is_resend; + gid_address_copy (&a.seid, seid); + gid_address_copy (&a.deid, deid); + a.smr_invoked = smr_invoked; + + vl_api_rpc_call_main_thread (send_map_request_thread_fn, + (u8 *) & a, sizeof (a)); + return 0; +} + +/** + * Take an action with a pending map request depending on expiration time + * and re-try counters. + */ +static void +update_pending_request (pending_map_request_t * r, f64 dt) +{ + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + lisp_msmr_t *mr; + + if (r->time_to_expire - dt < 0) + /* it's time to decide what to do with this pending request */ + { + if (r->retries_num >= NUMBER_OF_RETRIES) + /* too many retries -> assume current map resolver is not available */ + { + mr = get_map_resolver (&lcm->active_map_resolver); + if (!mr) + { + clib_warning ("Map resolver %U not found - probably deleted " + "by the user recently.", format_ip_address, + &lcm->active_map_resolver); + } + else + { + clib_warning ("map resolver %U is unreachable, ignoring", + format_ip_address, &lcm->active_map_resolver); + + /* mark current map resolver unavailable so it won't be + * selected next time */ + mr->is_down = 1; + mr->last_update = vlib_time_now (lcm->vlib_main); + } + + reset_pending_mr_counters (r); + elect_map_resolver (lcm); + + /* try to find a next eligible map resolver and re-send */ + queue_map_request (&r->src, &r->dst, r->is_smr_invoked, + 1 /* resend */ ); + } + else + { + /* try again */ + queue_map_request (&r->src, &r->dst, r->is_smr_invoked, + 1 /* resend */ ); + r->retries_num++; + r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME; + } + } + else + r->time_to_expire -= dt; +} + +static void +remove_dead_pending_map_requests (lisp_cp_main_t * lcm) +{ + u64 *nonce; + pending_map_request_t *pmr; + u32 *to_be_removed = 0, *pmr_index; + + /* *INDENT-OFF* */ + pool_foreach (pmr, lcm->pending_map_requests_pool, + ({ + if (pmr->to_be_removed) + { + clib_fifo_foreach (nonce, pmr->nonces, ({ + hash_unset (lcm->pending_map_requests_by_nonce, nonce[0]); + })); + + vec_add1 (to_be_removed, pmr - lcm->pending_map_requests_pool); + } + })); + /* *INDENT-ON* */ + + vec_foreach (pmr_index, to_be_removed) + pool_put_index (lcm->pending_map_requests_by_nonce, pmr_index[0]); + + vec_free (to_be_removed); +} + +static void +update_rloc_probing (lisp_cp_main_t * lcm, f64 dt) +{ + static f64 time_left = RLOC_PROBING_INTERVAL; + + if (!lcm->is_enabled || !lcm->rloc_probing) + return; + + time_left -= dt; + if (time_left <= 0) + { + time_left = RLOC_PROBING_INTERVAL; + send_rloc_probes (lcm); + } +} + +static void +update_map_register (lisp_cp_main_t * lcm, f64 dt) +{ + static f64 time_left = QUICK_MAP_REGISTER_INTERVAL; + static u64 mreg_sent_counter = 0; + + if (!lcm->is_enabled || !lcm->map_registering) + return; + + time_left -= dt; + if (time_left <= 0) + { + if (mreg_sent_counter >= QUICK_MAP_REGISTER_MSG_COUNT) + time_left = MAP_REGISTER_INTERVAL; + else + { + mreg_sent_counter++; + time_left = QUICK_MAP_REGISTER_INTERVAL; + } + send_map_register (lcm, 1 /* want map notify */ ); + } +} + +static uword +send_map_resolver_service (vlib_main_t * vm, + vlib_node_runtime_t * rt, vlib_frame_t * f) +{ + u32 *expired = 0; + f64 period = 2.0; + pending_map_request_t *pmr; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + + while (1) + { + vlib_process_wait_for_event_or_clock (vm, period); + + /* currently no signals are expected - just wait for clock */ + (void) vlib_process_get_events (vm, 0); + + /* *INDENT-OFF* */ + pool_foreach (pmr, lcm->pending_map_requests_pool, + ({ + if (!pmr->to_be_removed) + update_pending_request (pmr, period); + })); + /* *INDENT-ON* */ + + remove_dead_pending_map_requests (lcm); + + update_map_register (lcm, period); + update_rloc_probing (lcm, period); + + u64 now = clib_cpu_time_now (); + + expired = timing_wheel_advance (&lcm->wheel, now, expired, 0); + if (vec_len (expired) > 0) + { + u32 *mi = 0; + vec_foreach (mi, expired) + { + remove_expired_mapping (lcm, mi[0]); + } + _vec_len (expired) = 0; + } + } + + /* unreachable */ + return 0; +} + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (lisp_retry_service_node,static) = { + .function = send_map_resolver_service, + .type = VLIB_NODE_TYPE_PROCESS, + .name = "lisp-retry-service", + .process_log2_n_stack_bytes = 16, +}; +/* *INDENT-ON* */ + +VLIB_INIT_FUNCTION (lisp_cp_init); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/lisp-cp/control.h b/src/vnet/lisp-cp/control.h new file mode 100644 index 00000000000..e89c6fd6e8d --- /dev/null +++ b/src/vnet/lisp-cp/control.h @@ -0,0 +1,314 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef VNET_CONTROL_H_ +#define VNET_CONTROL_H_ + +#include <vnet/vnet.h> +#include <vnet/lisp-cp/gid_dictionary.h> +#include <vnet/lisp-cp/lisp_types.h> + +#define NUMBER_OF_RETRIES 1 +#define PENDING_MREQ_EXPIRATION_TIME 3.0 /* seconds */ +#define PENDING_MREQ_QUEUE_LEN 5 + +#define PENDING_MREG_EXPIRATION_TIME 3.0 /* seconds */ +#define RLOC_PROBING_INTERVAL 60.0 + +/* when map-registration is enabled "quick registration" takes place first. + In this mode ETR sends map-register messages at an increased frequency + until specified message count is reached */ +#define QUICK_MAP_REGISTER_MSG_COUNT 3 +#define QUICK_MAP_REGISTER_INTERVAL 3.0 + +/* normal map-register period */ +#define MAP_REGISTER_INTERVAL 60.0 + +/* 15 minutes */ +#define MAP_REGISTER_DEFAULT_TTL 900 + +typedef struct +{ + gid_address_t src; + gid_address_t dst; + u32 retries_num; + f64 time_to_expire; + u8 is_smr_invoked; + u64 *nonces; + u8 to_be_removed; +} pending_map_request_t; + +typedef struct +{ + gid_address_t leid; + gid_address_t reid; + u8 is_src_dst; + locator_pair_t *locator_pairs; +} fwd_entry_t; + +typedef struct +{ + gid_address_t leid; + gid_address_t reid; +} lisp_adjacency_t; + +typedef enum +{ + IP4_MISS_PACKET, + IP6_MISS_PACKET +} miss_packet_type_t; + +/* map-server/map-resolver structure */ +typedef struct +{ + u8 is_down; + f64 last_update; + ip_address_t address; + char *key; +} lisp_msmr_t; + +typedef struct +{ + /* headers */ + u8 data[100]; + u32 length; + miss_packet_type_t type; +} miss_packet_t; + +typedef enum +{ + MR_MODE_DST_ONLY = 0, + MR_MODE_SRC_DST, + _MR_MODE_MAX +} map_request_mode_t; + +typedef struct +{ + /* LISP feature status */ + u8 is_enabled; + + /* eid table */ + gid_dictionary_t mapping_index_by_gid; + + /* pool of mappings */ + mapping_t *mapping_pool; + + /* hash map of secret keys by mapping index */ + u8 *key_by_mapping_index; + + /* pool of locators */ + locator_t *locator_pool; + + /* pool of locator-sets */ + locator_set_t *locator_set_pool; + + /* vector of locator-set vectors composed of and indexed by locator index */ + u32 **locator_to_locator_sets; + + /* hash map of locators by name */ + uword *locator_set_index_by_name; + + /* vector of eid index vectors supported and indexed by locator-set index */ + u32 **locator_set_to_eids; + + /* vectors of indexes for local locator-sets and mappings */ + u32 *local_mappings_indexes; + u32 *local_locator_set_indexes; + + /* hash map of forwarding entries by mapping index */ + u32 *fwd_entry_by_mapping_index; + + /* forwarding entries pool */ + fwd_entry_t *fwd_entry_pool; + + /* hash map keyed by nonce of pending map-requests */ + uword *pending_map_requests_by_nonce; + + /* pool of pending map requests */ + pending_map_request_t *pending_map_requests_pool; + + /* hash map of sent map register messages */ + uword *map_register_messages_by_nonce; + + /* vector of map-resolvers */ + lisp_msmr_t *map_resolvers; + + /* vector of map-servers */ + lisp_msmr_t *map_servers; + + /* map resolver address currently being used for sending requests. + * This has to be an actual address and not an index to map_resolvers vector + * since the vector may be modified during request resend/retry procedure + * and break things :-) */ + ip_address_t active_map_resolver; + + u8 do_map_resolver_election; + + /* map-request locator set index */ + u32 mreq_itr_rlocs; + + /* vni to vrf hash tables */ + uword *table_id_by_vni; + uword *vni_by_table_id; + + /* vni to bd-index hash tables */ + uword *bd_id_by_vni; + uword *vni_by_bd_id; + + /* track l2 and l3 interfaces that have been created for vni */ + uword *l2_dp_intf_by_vni; + + /* Proxy ETR map index */ + u32 pitr_map_index; + + /* LISP PITR mode */ + u8 lisp_pitr; + + /* map request mode */ + u8 map_request_mode; + + /* enable/disable map registering */ + u8 map_registering; + + /* enable/disable rloc-probing */ + u8 rloc_probing; + + /* timing wheel for mappping timeouts */ + timing_wheel_t wheel; + + /* commodity */ + ip4_main_t *im4; + ip6_main_t *im6; + vlib_main_t *vlib_main; + vnet_main_t *vnet_main; +} lisp_cp_main_t; + +/* lisp-gpe control plane */ +lisp_cp_main_t lisp_control_main; + +extern vlib_node_registration_t lisp_cp_input_node; +extern vlib_node_registration_t lisp_cp_lookup_ip4_node; +extern vlib_node_registration_t lisp_cp_lookup_ip6_node; + +clib_error_t *lisp_cp_init (); + +always_inline lisp_cp_main_t * +vnet_lisp_cp_get_main () +{ + return &lisp_control_main; +} + +typedef struct +{ + u8 is_add; + union + { + u8 *name; + u32 index; + }; + locator_t *locators; + u8 local; +} vnet_lisp_add_del_locator_set_args_t; + +int +vnet_lisp_add_del_locator_set (vnet_lisp_add_del_locator_set_args_t * a, + u32 * ls_index); +int +vnet_lisp_add_del_locator (vnet_lisp_add_del_locator_set_args_t * a, + locator_set_t * ls, u32 * ls_index); + +typedef struct +{ + u8 is_add; + gid_address_t eid; + u32 locator_set_index; + + u32 ttl; + u8 action; + u8 authoritative; + + u8 local; + u8 is_static; + u8 *key; + u8 key_id; +} vnet_lisp_add_del_mapping_args_t; + +int +vnet_lisp_map_cache_add_del (vnet_lisp_add_del_mapping_args_t * a, + u32 * map_index); +int +vnet_lisp_add_del_local_mapping (vnet_lisp_add_del_mapping_args_t * a, + u32 * map_index_result); + +int +vnet_lisp_add_del_mapping (gid_address_t * deid, locator_t * dlocs, u8 action, + u8 authoritative, u32 ttl, u8 is_add, u8 is_static, + u32 * res_map_index); + +typedef struct +{ + gid_address_t reid; + gid_address_t leid; + u8 is_add; +} vnet_lisp_add_del_adjacency_args_t; + +int vnet_lisp_add_del_adjacency (vnet_lisp_add_del_adjacency_args_t * a); + +typedef struct +{ + u8 is_add; + ip_address_t address; +} vnet_lisp_add_del_map_resolver_args_t; + +int +vnet_lisp_add_del_map_resolver (vnet_lisp_add_del_map_resolver_args_t * a); +int vnet_lisp_add_del_map_server (ip_address_t * addr, u8 is_add); + +clib_error_t *vnet_lisp_enable_disable (u8 is_enabled); +u8 vnet_lisp_enable_disable_status (void); + +int vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add); + +typedef struct +{ + u8 is_add; + u8 *locator_set_name; +} vnet_lisp_add_del_mreq_itr_rloc_args_t; + +int +vnet_lisp_add_del_mreq_itr_rlocs (vnet_lisp_add_del_mreq_itr_rloc_args_t * a); + +int vnet_lisp_clear_all_remote_adjacencies (void); + +int vnet_lisp_eid_table_map (u32 vni, u32 vrf, u8 is_l2, u8 is_add); +int vnet_lisp_add_del_map_table_key (gid_address_t * eid, char *key, + u8 is_add); +int vnet_lisp_set_map_request_mode (u8 mode); +u8 vnet_lisp_get_map_request_mode (void); +lisp_adjacency_t *vnet_lisp_adjacencies_get_by_vni (u32 vni); +int vnet_lisp_rloc_probe_enable_disable (u8 is_enable); +int vnet_lisp_map_register_enable_disable (u8 is_enable); +u8 vnet_lisp_map_register_state_get (void); +u8 vnet_lisp_rloc_probe_state_get (void); + +#endif /* VNET_CONTROL_H_ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/lisp-cp/gid_dictionary.c b/src/vnet/lisp-cp/gid_dictionary.c new file mode 100644 index 00000000000..d238124ecd8 --- /dev/null +++ b/src/vnet/lisp-cp/gid_dictionary.c @@ -0,0 +1,865 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <vnet/lisp-cp/gid_dictionary.h> + +typedef struct +{ + void *arg; + ip_prefix_t src; + foreach_subprefix_match_cb_t cb; + union + { + gid_ip4_table_t *ip4_table; + gid_ip6_table_t *ip6_table; + }; +} sfib_entry_arg_t; + +static u32 ip4_lookup (gid_ip4_table_t * db, u32 vni, ip_prefix_t * key); + +static u32 ip6_lookup (gid_ip6_table_t * db, u32 vni, ip_prefix_t * key); + +static void +foreach_sfib4_subprefix (BVT (clib_bihash_kv) * kvp, void *arg) +{ + sfib_entry_arg_t *a = arg; + u32 ip = (u32) kvp->key[0]; + ip4_address_t *mask; + u8 plen = ip_prefix_len (&a->src); + + ASSERT (plen <= 32); + mask = &a->ip4_table->ip4_fib_masks[plen]; + + u32 src_ip = ip_prefix_v4 (&a->src).as_u32; + src_ip &= mask->as_u32; + ip &= mask->as_u32; + + if (src_ip == ip) + { + /* found sub-prefix of src prefix */ + (a->cb) (kvp->value, a->arg); + } +} + +static void +gid_dict_foreach_ip4_subprefix (gid_dictionary_t * db, u32 vni, + ip_prefix_t * src, ip_prefix_t * dst, + foreach_subprefix_match_cb_t cb, void *arg) +{ + u32 sfi; + gid_ip4_table_t *sfib4; + sfib_entry_arg_t a; + + sfi = ip4_lookup (&db->dst_ip4_table, vni, dst); + if (GID_LOOKUP_MISS == sfi) + return; + + sfib4 = pool_elt_at_index (db->src_ip4_table_pool, sfi); + + a.arg = arg; + a.cb = cb; + a.src = src[0]; + a.ip4_table = sfib4; + + BV (clib_bihash_foreach_key_value_pair) (&sfib4->ip4_lookup_table, + foreach_sfib4_subprefix, &a); +} + +static void +foreach_sfib6_subprefix (BVT (clib_bihash_kv) * kvp, void *arg) +{ + sfib_entry_arg_t *a = arg; + ip6_address_t ip; + ip6_address_t *mask; + u8 plen = ip_prefix_len (&a->src); + + mask = &a->ip6_table->ip6_fib_masks[plen]; + ip.as_u64[0] = kvp->key[0]; + ip.as_u64[1] = kvp->key[1]; + + if (ip6_address_is_equal_masked (&ip_prefix_v6 (&a->src), &ip, mask)) + { + /* found sub-prefix of src prefix */ + (a->cb) (kvp->value, a->arg); + } +} + +static void +gid_dict_foreach_ip6_subprefix (gid_dictionary_t * db, u32 vni, + ip_prefix_t * src, ip_prefix_t * dst, + foreach_subprefix_match_cb_t cb, void *arg) +{ + u32 sfi; + gid_ip6_table_t *sfib6; + sfib_entry_arg_t a; + + sfi = ip6_lookup (&db->dst_ip6_table, vni, dst); + if (GID_LOOKUP_MISS == sfi) + return; + + sfib6 = pool_elt_at_index (db->src_ip6_table_pool, sfi); + + a.arg = arg; + a.cb = cb; + a.src = src[0]; + a.ip6_table = sfib6; + + BV (clib_bihash_foreach_key_value_pair) (&sfib6->ip6_lookup_table, + foreach_sfib6_subprefix, &a); +} + +void +gid_dict_foreach_subprefix (gid_dictionary_t * db, gid_address_t * eid, + foreach_subprefix_match_cb_t cb, void *arg) +{ + ip_prefix_t *ippref = &gid_address_sd_dst_ippref (eid); + + if (IP4 == ip_prefix_version (ippref)) + gid_dict_foreach_ip4_subprefix (db, gid_address_vni (eid), + &gid_address_sd_src_ippref (eid), + &gid_address_sd_dst_ippref (eid), cb, + arg); + else + gid_dict_foreach_ip6_subprefix (db, gid_address_vni (eid), + &gid_address_sd_src_ippref (eid), + &gid_address_sd_dst_ippref (eid), cb, + arg); +} + +static void +make_mac_sd_key (BVT (clib_bihash_kv) * kv, u32 vni, u8 src_mac[6], + u8 dst_mac[6]) +{ + kv->key[0] = (u64) vni; + kv->key[1] = mac_to_u64 (dst_mac); + kv->key[2] = src_mac ? mac_to_u64 (src_mac) : (u64) 0; +} + +static u32 +mac_sd_lookup (gid_mac_table_t * db, u32 vni, u8 * dst, u8 * src) +{ + int rv; + BVT (clib_bihash_kv) kv, value; + + make_mac_sd_key (&kv, vni, src, dst); + rv = BV (clib_bihash_search_inline_2) (&db->mac_lookup_table, &kv, &value); + + /* no match, try with src 0, catch all for dst */ + if (rv != 0) + { + kv.key[2] = 0; + rv = BV (clib_bihash_search_inline_2) (&db->mac_lookup_table, &kv, + &value); + if (rv == 0) + return value.value; + } + else + return value.value; + + return GID_LOOKUP_MISS; +} + +static u32 +ip4_lookup_exact_match (gid_ip4_table_t * db, u32 vni, ip_prefix_t * key) +{ + int rv; + BVT (clib_bihash_kv) kv, value; + + ip4_address_t *mask; + + mask = &db->ip4_fib_masks[ip_prefix_len (key)]; + + kv.key[0] = ((u64) vni << 32) | (ip_prefix_v4 (key).as_u32 & mask->as_u32); + kv.key[1] = 0; + kv.key[2] = 0; + + rv = BV (clib_bihash_search_inline_2) (&db->ip4_lookup_table, &kv, &value); + if (rv == 0) + return value.value; + + return GID_LOOKUP_MISS; +} + +static u32 +ip4_lookup (gid_ip4_table_t * db, u32 vni, ip_prefix_t * key) +{ + int i, len; + int rv; + BVT (clib_bihash_kv) kv, value; + + len = vec_len (db->ip4_prefix_lengths_in_search_order); + + for (i = 0; i < len; i++) + { + int dst_address_length = db->ip4_prefix_lengths_in_search_order[i]; + ip4_address_t *mask; + + ASSERT (dst_address_length >= 0 && dst_address_length <= 32); + + mask = &db->ip4_fib_masks[dst_address_length]; + + kv.key[0] = + ((u64) vni << 32) | (ip_prefix_v4 (key).as_u32 & mask->as_u32); + kv.key[1] = 0; + kv.key[2] = 0; + + rv = + BV (clib_bihash_search_inline_2) (&db->ip4_lookup_table, &kv, &value); + if (rv == 0) + return value.value; + } + + return GID_LOOKUP_MISS; +} + +static u32 +ip6_lookup_exact_match (gid_ip6_table_t * db, u32 vni, ip_prefix_t * key) +{ + int rv; + BVT (clib_bihash_kv) kv, value; + + ip6_address_t *mask; + mask = &db->ip6_fib_masks[ip_prefix_len (key)]; + + kv.key[0] = ip_prefix_v6 (key).as_u64[0] & mask->as_u64[0]; + kv.key[1] = ip_prefix_v6 (key).as_u64[1] & mask->as_u64[1]; + kv.key[2] = (u64) vni; + + rv = BV (clib_bihash_search_inline_2) (&db->ip6_lookup_table, &kv, &value); + if (rv == 0) + return value.value; + + return GID_LOOKUP_MISS; +} + +static u32 +ip6_lookup (gid_ip6_table_t * db, u32 vni, ip_prefix_t * key) +{ + int i, len; + int rv; + BVT (clib_bihash_kv) kv, value; + + len = vec_len (db->ip6_prefix_lengths_in_search_order); + + for (i = 0; i < len; i++) + { + int dst_address_length = db->ip6_prefix_lengths_in_search_order[i]; + ip6_address_t *mask; + + ASSERT (dst_address_length >= 0 && dst_address_length <= 128); + + mask = &db->ip6_fib_masks[dst_address_length]; + + kv.key[0] = ip_prefix_v6 (key).as_u64[0] & mask->as_u64[0]; + kv.key[1] = ip_prefix_v6 (key).as_u64[1] & mask->as_u64[1]; + kv.key[2] = (u64) vni; + + rv = + BV (clib_bihash_search_inline_2) (&db->ip6_lookup_table, &kv, &value); + if (rv == 0) + return value.value; + } + + return GID_LOOKUP_MISS; +} + +static u32 +ip_sd_lookup (gid_dictionary_t * db, u32 vni, ip_prefix_t * dst, + ip_prefix_t * src) +{ + u32 sfi; + gid_ip4_table_t *sfib4; + gid_ip6_table_t *sfib6; + + switch (ip_prefix_version (dst)) + { + case IP4: + sfi = ip4_lookup (&db->dst_ip4_table, vni, dst); + if (GID_LOOKUP_MISS != sfi) + sfib4 = pool_elt_at_index (db->src_ip4_table_pool, sfi); + else + return GID_LOOKUP_MISS; + + if (!src) + { + ip_prefix_t sp; + memset (&sp, 0, sizeof (sp)); + return ip4_lookup_exact_match (sfib4, 0, &sp); + } + else + return ip4_lookup (sfib4, 0, src); + + break; + case IP6: + sfi = ip6_lookup (&db->dst_ip6_table, vni, dst); + if (GID_LOOKUP_MISS != sfi) + sfib6 = pool_elt_at_index (db->src_ip6_table_pool, sfi); + else + return GID_LOOKUP_MISS; + + if (!src) + { + ip_prefix_t sp; + memset (&sp, 0, sizeof (sp)); + ip_prefix_version (&sp) = IP6; + return ip6_lookup_exact_match (sfib6, 0, &sp); + } + else + return ip6_lookup (sfib6, 0, src); + + break; + default: + clib_warning ("address type %d not supported!", + ip_prefix_version (dst)); + break; + } + return GID_LOOKUP_MISS; +} + +u32 +gid_dictionary_lookup (gid_dictionary_t * db, gid_address_t * key) +{ + switch (gid_address_type (key)) + { + case GID_ADDR_IP_PREFIX: + return ip_sd_lookup (db, gid_address_vni (key), + &gid_address_ippref (key), 0); + case GID_ADDR_MAC: + return mac_sd_lookup (&db->sd_mac_table, gid_address_vni (key), + gid_address_mac (key), 0); + case GID_ADDR_SRC_DST: + switch (gid_address_sd_dst_type (key)) + { + case FID_ADDR_IP_PREF: + return ip_sd_lookup (db, gid_address_vni (key), + &gid_address_sd_dst_ippref (key), + &gid_address_sd_src_ippref (key)); + break; + case FID_ADDR_MAC: + return mac_sd_lookup (&db->sd_mac_table, gid_address_vni (key), + gid_address_sd_dst_mac (key), + gid_address_sd_src_mac (key)); + break; + default: + clib_warning ("Source/Dest address type %d not supported!", + gid_address_sd_dst_type (key)); + break; + } + break; + default: + clib_warning ("address type %d not supported!", gid_address_type (key)); + break; + } + return GID_LOOKUP_MISS; +} + +u32 +gid_dictionary_sd_lookup (gid_dictionary_t * db, gid_address_t * dst, + gid_address_t * src) +{ + switch (gid_address_type (dst)) + { + case GID_ADDR_IP_PREFIX: + return ip_sd_lookup (db, gid_address_vni (dst), + &gid_address_ippref (dst), + &gid_address_ippref (src)); + case GID_ADDR_MAC: + return mac_sd_lookup (&db->sd_mac_table, gid_address_vni (dst), + gid_address_mac (dst), gid_address_mac (src)); + case GID_ADDR_SRC_DST: + switch (gid_address_sd_dst_type (dst)) + { + case FID_ADDR_IP_PREF: + return ip_sd_lookup (db, gid_address_vni (dst), + &gid_address_sd_dst_ippref (dst), + &gid_address_sd_src_ippref (dst)); + break; + case FID_ADDR_MAC: + return mac_sd_lookup (&db->sd_mac_table, gid_address_vni (dst), + gid_address_sd_dst_mac (dst), + gid_address_sd_src_mac (dst)); + break; + default: + clib_warning ("Source/Dest address type %d not supported!", + gid_address_sd_dst_type (dst)); + break; + } + break; + default: + clib_warning ("address type %d not supported!", gid_address_type (dst)); + break; + } + return GID_LOOKUP_MISS; +} + +static void +ip4_compute_prefix_lengths_in_search_order (gid_ip4_table_t * db) +{ + int i; + vec_reset_length (db->ip4_prefix_lengths_in_search_order); + /* Note: bitmap reversed so this is in fact a longest prefix match */ + + /* *INDENT-OFF* */ + clib_bitmap_foreach (i, db->ip4_non_empty_dst_address_length_bitmap, + ({ + int dst_address_length = 32 - i; + vec_add1 (db->ip4_prefix_lengths_in_search_order, dst_address_length); + })); + /* *INDENT-ON* */ + +} + +static u32 +add_del_ip4_key (gid_ip4_table_t * db, u32 vni, ip_prefix_t * pref, u32 val, + u8 is_add) +{ + BVT (clib_bihash_kv) kv, value; + u32 old_val = ~0; + ip4_address_t key; + u8 plen = ip_prefix_len (pref); + + clib_memcpy (&key, &ip_prefix_v4 (pref), sizeof (key)); + key.as_u32 &= db->ip4_fib_masks[plen].as_u32; + if (is_add) + { + db->ip4_non_empty_dst_address_length_bitmap = + clib_bitmap_set (db->ip4_non_empty_dst_address_length_bitmap, + 32 - plen, 1); + ip4_compute_prefix_lengths_in_search_order (db); + + db->ip4_prefix_len_refcount[plen]++; + } + else + { + ASSERT (db->ip4_prefix_len_refcount[plen] != 0); + + db->ip4_prefix_len_refcount[plen]--; + + if (db->ip4_prefix_len_refcount[plen] == 0) + { + db->ip4_non_empty_dst_address_length_bitmap = + clib_bitmap_set (db->ip4_non_empty_dst_address_length_bitmap, + 32 - plen, 0); + ip4_compute_prefix_lengths_in_search_order (db); + } + } + + kv.key[0] = ((u64) vni << 32) | key.as_u32; + kv.key[1] = 0; + kv.key[2] = 0; + + if (BV (clib_bihash_search) (&db->ip4_lookup_table, &kv, &value) == 0) + old_val = value.value; + + if (!is_add) + BV (clib_bihash_add_del) (&db->ip4_lookup_table, &kv, 0 /* is_add */ ); + else + { + kv.value = val; + BV (clib_bihash_add_del) (&db->ip4_lookup_table, &kv, 1 /* is_add */ ); + } + return old_val; +} + +static void +ip4_lookup_init (gid_ip4_table_t * db) +{ + uword i; + + memset (db->ip4_prefix_len_refcount, 0, + sizeof (db->ip4_prefix_len_refcount)); + + for (i = 0; i < ARRAY_LEN (db->ip4_fib_masks); i++) + { + u32 m; + + if (i < 32) + m = pow2_mask (i) << (32 - i); + else + m = ~0; + db->ip4_fib_masks[i].as_u32 = clib_host_to_net_u32 (m); + } + if (db->ip4_lookup_table_nbuckets == 0) + db->ip4_lookup_table_nbuckets = IP4_LOOKUP_DEFAULT_HASH_NUM_BUCKETS; + + db->ip4_lookup_table_nbuckets = + 1 << max_log2 (db->ip4_lookup_table_nbuckets); + + if (db->ip4_lookup_table_size == 0) + db->ip4_lookup_table_size = IP4_LOOKUP_DEFAULT_HASH_MEMORY_SIZE; + + BV (clib_bihash_init) (&db->ip4_lookup_table, "ip4 lookup table", + db->ip4_lookup_table_nbuckets, + db->ip4_lookup_table_size); +} + +static u32 +add_del_sd_ip4_key (gid_dictionary_t * db, u32 vni, ip_prefix_t * dst_pref, + ip_prefix_t * src_pref, u32 val, u8 is_add) +{ + u32 sfi, old_val = ~0; + gid_ip4_table_t *sfib; + + sfi = ip4_lookup_exact_match (&db->dst_ip4_table, vni, dst_pref); + + if (is_add) + { + if (GID_LOOKUP_MISS == sfi) + { + pool_get (db->src_ip4_table_pool, sfib); + ip4_lookup_init (sfib); + add_del_ip4_key (&db->dst_ip4_table, vni, dst_pref, + sfib - db->src_ip4_table_pool, is_add); + if (src_pref) + add_del_ip4_key (sfib, 0 /* vni */ , src_pref, val, is_add); + else + { + ip_prefix_t sp; + memset (&sp, 0, sizeof (sp)); + add_del_ip4_key (sfib, 0 /* vni */ , &sp, val, is_add); + } + } + else + { + ASSERT (!pool_is_free_index (db->src_ip4_table_pool, sfi)); + sfib = pool_elt_at_index (db->src_ip4_table_pool, sfi); + if (src_pref) + { + old_val = ip4_lookup_exact_match (sfib, 0, src_pref); + add_del_ip4_key (sfib, 0 /* vni */ , src_pref, val, is_add); + } + else + { + ip_prefix_t sp; + memset (&sp, 0, sizeof (sp)); + old_val = + add_del_ip4_key (sfib, 0 /* vni */ , &sp, val, is_add); + } + } + } + else + { + if (GID_LOOKUP_MISS != sfi) + { + add_del_ip4_key (&db->dst_ip4_table, vni, dst_pref, 0, is_add); + sfib = pool_elt_at_index (db->src_ip4_table_pool, sfi); + if (src_pref) + old_val = add_del_ip4_key (sfib, 0, src_pref, 0, is_add); + else + { + ip_prefix_t sp; + memset (&sp, 0, sizeof (sp)); + old_val = add_del_ip4_key (sfib, 0, &sp, 0, is_add); + } + } + else + clib_warning ("cannot delete dst mapping %U!", format_ip_prefix, + dst_pref); + } + return old_val; +} + +static void +ip6_compute_prefix_lengths_in_search_order (gid_ip6_table_t * db) +{ + int i; + vec_reset_length (db->ip6_prefix_lengths_in_search_order); + /* Note: bitmap reversed so this is in fact a longest prefix match */ + + /* *INDENT-OFF* */ + clib_bitmap_foreach (i, db->ip6_non_empty_dst_address_length_bitmap, + ({ + int dst_address_length = 128 - i; + vec_add1 (db->ip6_prefix_lengths_in_search_order, dst_address_length); + })); + /* *INDENT-ON* */ +} + +static u32 +add_del_ip6_key (gid_ip6_table_t * db, u32 vni, ip_prefix_t * pref, u32 val, + u8 is_add) +{ + BVT (clib_bihash_kv) kv, value; + u32 old_val = ~0; + ip6_address_t key; + u8 plen = ip_prefix_len (pref); + + clib_memcpy (&key, &ip_prefix_v6 (pref), sizeof (key)); + ip6_address_mask (&key, &db->ip6_fib_masks[plen]); + if (is_add) + { + db->ip6_non_empty_dst_address_length_bitmap = + clib_bitmap_set (db->ip6_non_empty_dst_address_length_bitmap, + 128 - plen, 1); + ip6_compute_prefix_lengths_in_search_order (db); + db->ip6_prefix_len_refcount[plen]++; + } + else + { + ASSERT (db->ip6_prefix_len_refcount[plen] != 0); + + db->ip6_prefix_len_refcount[plen]--; + + if (db->ip6_prefix_len_refcount[plen] == 0) + { + db->ip6_non_empty_dst_address_length_bitmap = + clib_bitmap_set (db->ip6_non_empty_dst_address_length_bitmap, + 128 - plen, 0); + ip6_compute_prefix_lengths_in_search_order (db); + } + } + + kv.key[0] = key.as_u64[0]; + kv.key[1] = key.as_u64[1]; + kv.key[2] = (u64) vni; +// kv.key[2] = ((u64)((fib - im->fibs))<<32) | ip_prefix_len(key); + + if (BV (clib_bihash_search) (&db->ip6_lookup_table, &kv, &value) == 0) + old_val = value.value; + + if (!is_add) + BV (clib_bihash_add_del) (&db->ip6_lookup_table, &kv, 0 /* is_add */ ); + else + { + kv.value = val; + BV (clib_bihash_add_del) (&db->ip6_lookup_table, &kv, 1 /* is_add */ ); + } + return old_val; +} + +static u32 +add_del_mac (gid_mac_table_t * db, u32 vni, u8 * dst_mac, u8 * src_mac, + u32 val, u8 is_add) +{ + BVT (clib_bihash_kv) kv, value; + u32 old_val = ~0; + + make_mac_sd_key (&kv, vni, src_mac, dst_mac); + + if (BV (clib_bihash_search) (&db->mac_lookup_table, &kv, &value) == 0) + old_val = value.value; + + if (!is_add) + BV (clib_bihash_add_del) (&db->mac_lookup_table, &kv, 0 /* is_add */ ); + else + { + kv.value = val; + BV (clib_bihash_add_del) (&db->mac_lookup_table, &kv, 1 /* is_add */ ); + } + return old_val; +} + +static void +ip6_lookup_init (gid_ip6_table_t * db) +{ + uword i; + + memset (db->ip6_prefix_len_refcount, 0, + sizeof (db->ip6_prefix_len_refcount)); + + for (i = 0; i < ARRAY_LEN (db->ip6_fib_masks); i++) + { + u32 j, i0, i1; + + i0 = i / 32; + i1 = i % 32; + + for (j = 0; j < i0; j++) + db->ip6_fib_masks[i].as_u32[j] = ~0; + + if (i1) + db->ip6_fib_masks[i].as_u32[i0] = + clib_host_to_net_u32 (pow2_mask (i1) << (32 - i1)); + } + + if (db->ip6_lookup_table_nbuckets == 0) + db->ip6_lookup_table_nbuckets = IP6_LOOKUP_DEFAULT_HASH_NUM_BUCKETS; + + db->ip6_lookup_table_nbuckets = + 1 << max_log2 (db->ip6_lookup_table_nbuckets); + + if (db->ip6_lookup_table_size == 0) + db->ip6_lookup_table_size = IP6_LOOKUP_DEFAULT_HASH_MEMORY_SIZE; + + BV (clib_bihash_init) (&db->ip6_lookup_table, "ip6 lookup table", + db->ip6_lookup_table_nbuckets, + db->ip6_lookup_table_size); +} + +static u32 +add_del_sd_ip6_key (gid_dictionary_t * db, u32 vni, ip_prefix_t * dst_pref, + ip_prefix_t * src_pref, u32 val, u8 is_add) +{ + u32 sfi, old_val = ~0; + gid_ip6_table_t *sfib; + + sfi = ip6_lookup_exact_match (&db->dst_ip6_table, vni, dst_pref); + + if (is_add) + { + if (GID_LOOKUP_MISS == sfi) + { + pool_get (db->src_ip6_table_pool, sfib); + ip6_lookup_init (sfib); + add_del_ip6_key (&db->dst_ip6_table, vni, dst_pref, + sfib - db->src_ip6_table_pool, is_add); + if (src_pref) + add_del_ip6_key (sfib, 0 /* vni */ , src_pref, val, is_add); + else + { + ip_prefix_t sp; + memset (&sp, 0, sizeof (sp)); + ip_prefix_version (&sp) = IP6; + add_del_ip6_key (sfib, 0 /* vni */ , &sp, val, is_add); + } + } + else + { + ASSERT (!pool_is_free_index (db->src_ip6_table_pool, sfi)); + sfib = pool_elt_at_index (db->src_ip6_table_pool, sfi); + if (src_pref) + { + old_val = ip6_lookup_exact_match (sfib, 0, src_pref); + add_del_ip6_key (sfib, 0 /* vni */ , src_pref, val, is_add); + } + else + { + ip_prefix_t sp; + memset (&sp, 0, sizeof (sp)); + ip_prefix_version (&sp) = IP6; + old_val = + add_del_ip6_key (sfib, 0 /* vni */ , &sp, val, is_add); + } + } + } + else + { + if (GID_LOOKUP_MISS != sfi) + { + add_del_ip6_key (&db->dst_ip6_table, vni, dst_pref, 0, is_add); + sfib = pool_elt_at_index (db->src_ip6_table_pool, sfi); + if (src_pref) + old_val = add_del_ip6_key (sfib, 0, src_pref, 0, is_add); + else + { + ip_prefix_t sp; + memset (&sp, 0, sizeof (sp)); + ip_prefix_version (&sp) = IP6; + old_val = add_del_ip6_key (sfib, 0, &sp, 0, is_add); + } + } + else + clib_warning ("cannot delete dst mapping %U!", format_ip_prefix, + dst_pref); + } + return old_val; +} + +static u32 +add_del_ip (gid_dictionary_t * db, u32 vni, ip_prefix_t * dst_key, + ip_prefix_t * src_key, u32 value, u8 is_add) +{ + switch (ip_prefix_version (dst_key)) + { + case IP4: + return add_del_sd_ip4_key (db, vni, dst_key, src_key, value, is_add); + break; + case IP6: + return add_del_sd_ip6_key (db, vni, dst_key, src_key, value, is_add); + break; + default: + clib_warning ("address type %d not supported!", + ip_prefix_version (dst_key)); + break; + } + return ~0; +} + +static u32 +add_del_sd (gid_dictionary_t * db, u32 vni, source_dest_t * key, u32 value, + u8 is_add) +{ + switch (sd_dst_type (key)) + { + case FID_ADDR_IP_PREF: + add_del_ip (db, vni, &sd_dst_ippref (key), &sd_src_ippref (key), + value, is_add); + + case FID_ADDR_MAC: + return add_del_mac (&db->sd_mac_table, vni, sd_dst_mac (key), + sd_src_mac (key), value, is_add); + + default: + clib_warning ("SD address type %d not supprted!", sd_dst_type (key)); + break; + } + + return ~0; +} + +u32 +gid_dictionary_add_del (gid_dictionary_t * db, gid_address_t * key, u32 value, + u8 is_add) +{ + switch (gid_address_type (key)) + { + case GID_ADDR_IP_PREFIX: + return add_del_ip (db, gid_address_vni (key), &gid_address_ippref (key), + 0, value, is_add); + case GID_ADDR_MAC: + return add_del_mac (&db->sd_mac_table, gid_address_vni (key), + gid_address_mac (key), 0, value, is_add); + case GID_ADDR_SRC_DST: + return add_del_sd (db, gid_address_vni (key), &gid_address_sd (key), + value, is_add); + default: + clib_warning ("address type %d not supported!", gid_address_type (key)); + break; + } + return ~0; +} + +static void +mac_lookup_init (gid_mac_table_t * db) +{ + if (db->mac_lookup_table_nbuckets == 0) + db->mac_lookup_table_nbuckets = MAC_LOOKUP_DEFAULT_HASH_NUM_BUCKETS; + + db->mac_lookup_table_nbuckets = + 1 << max_log2 (db->mac_lookup_table_nbuckets); + + if (db->mac_lookup_table_size == 0) + db->mac_lookup_table_size = MAC_LOOKUP_DEFAULT_HASH_MEMORY_SIZE; + + BV (clib_bihash_init) (&db->mac_lookup_table, "mac lookup table", + db->mac_lookup_table_nbuckets, + db->mac_lookup_table_size); +} + +void +gid_dictionary_init (gid_dictionary_t * db) +{ + ip4_lookup_init (&db->dst_ip4_table); + ip6_lookup_init (&db->dst_ip6_table); + mac_lookup_init (&db->sd_mac_table); +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/lisp-cp/gid_dictionary.h b/src/vnet/lisp-cp/gid_dictionary.h new file mode 100644 index 00000000000..c5aaf8cb30d --- /dev/null +++ b/src/vnet/lisp-cp/gid_dictionary.h @@ -0,0 +1,120 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef VNET_LISP_GPE_GID_DICTIONARY_H_ +#define VNET_LISP_GPE_GID_DICTIONARY_H_ + +#include <vnet/vnet.h> +#include <vnet/lisp-cp/lisp_types.h> +#include <vppinfra/bihash_24_8.h> +#include <vppinfra/bihash_template.h> + +#define GID_LOOKUP_MISS ((u32)~0) + +/* Default size of the ip4 hash table */ +#define IP4_LOOKUP_DEFAULT_HASH_NUM_BUCKETS (64 * 1024) +#define IP4_LOOKUP_DEFAULT_HASH_MEMORY_SIZE (32<<20) + +/* Default size of the ip6 hash table */ +#define IP6_LOOKUP_DEFAULT_HASH_NUM_BUCKETS (64 * 1024) +#define IP6_LOOKUP_DEFAULT_HASH_MEMORY_SIZE (32<<20) + +/* Default size of the MAC hash table */ +#define MAC_LOOKUP_DEFAULT_HASH_NUM_BUCKETS (64 * 1024) +#define MAC_LOOKUP_DEFAULT_HASH_MEMORY_SIZE (32<<20) + +typedef void (*foreach_subprefix_match_cb_t) (u32, void *); + +typedef struct +{ + BVT (clib_bihash) ip4_lookup_table; + + /* bitmap/vector of mask widths to search */ + uword *ip4_non_empty_dst_address_length_bitmap; + u8 *ip4_prefix_lengths_in_search_order; + ip4_address_t ip4_fib_masks[33]; + u32 ip4_prefix_len_refcount[33]; + + /* ip4 lookup table config parameters */ + u32 ip4_lookup_table_nbuckets; + uword ip4_lookup_table_size; +} gid_ip4_table_t; + +typedef struct +{ + BVT (clib_bihash) ip6_lookup_table; + + /* bitmap/vector of mask widths to search */ + uword *ip6_non_empty_dst_address_length_bitmap; + u8 *ip6_prefix_lengths_in_search_order; + ip6_address_t ip6_fib_masks[129]; + u64 ip6_prefix_len_refcount[129]; + + /* ip6 lookup table config parameters */ + u32 ip6_lookup_table_nbuckets; + uword ip6_lookup_table_size; +} gid_ip6_table_t; + +typedef struct gid_mac_table +{ + BVT (clib_bihash) mac_lookup_table; + + /* mac lookup table config parameters */ + u32 mac_lookup_table_nbuckets; + uword mac_lookup_table_size; +} gid_mac_table_t; + +typedef struct +{ + /** destination IP LPM ip4 lookup table */ + gid_ip4_table_t dst_ip4_table; + + /** pool of source IP LPM ip4 lookup tables */ + gid_ip4_table_t *src_ip4_table_pool; + + /** destination IP LPM ip6 lookup table */ + gid_ip6_table_t dst_ip6_table; + + /** pool of source IP LPM ip6 lookup tables */ + gid_ip6_table_t *src_ip6_table_pool; + + /** flat source/dest mac lookup table */ + gid_mac_table_t sd_mac_table; + +} gid_dictionary_t; + +u32 +gid_dictionary_add_del (gid_dictionary_t * db, gid_address_t * key, u32 value, + u8 is_add); + +u32 gid_dictionary_lookup (gid_dictionary_t * db, gid_address_t * key); +u32 gid_dictionary_sd_lookup (gid_dictionary_t * db, gid_address_t * dst, + gid_address_t * src); + +void gid_dictionary_init (gid_dictionary_t * db); + +void +gid_dict_foreach_subprefix (gid_dictionary_t * db, gid_address_t * eid, + foreach_subprefix_match_cb_t cb, void *arg); + +#endif /* VNET_LISP_GPE_GID_DICTIONARY_H_ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/lisp-cp/lisp.api b/src/vnet/lisp-cp/lisp.api new file mode 100644 index 00000000000..20c17aa39b1 --- /dev/null +++ b/src/vnet/lisp-cp/lisp.api @@ -0,0 +1,835 @@ +/* + * Copyright (c) 2015-2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +/** \brief add or delete locator_set + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param is_add - add address if non-zero, else delete + @param locator_set_name - locator name + @param locator_num - number of locators + @param locators - LISP locator records + Structure of one locator record is as follows: + + define locator_t { + u32 sw_if_index; + u8 priority; + u8 weight; + } +*/ +define lisp_add_del_locator_set +{ + u32 client_index; + u32 context; + u8 is_add; + u8 locator_set_name[64]; + u32 locator_num; + u8 locators[0]; +}; + +/** \brief Reply for locator_set add/del + @param context - returned sender context, to match reply w/ request + @param retval - return code + @param ls_index - locator set index +*/ +define lisp_add_del_locator_set_reply +{ + u32 context; + i32 retval; + u32 ls_index; +}; + +/** \brief add or delete locator for locator_set + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param is_add - add address if non-zero, else delete + @param locator_set_name - name of locator_set to add/del locator + @param sw_if_index - index of the interface + @param priority - priority of the lisp locator + @param weight - weight of the lisp locator +*/ +define lisp_add_del_locator +{ + u32 client_index; + u32 context; + u8 is_add; + u8 locator_set_name[64]; + u32 sw_if_index; + u8 priority; + u8 weight; +}; + +/** \brief Reply for locator add/del + @param context - returned sender context, to match reply w/ request + @param retval - return code +*/ +define lisp_add_del_locator_reply +{ + u32 context; + i32 retval; +}; + +/** \brief add or delete lisp eid-table + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param is_add - add address if non-zero, else delete + @param eid_type: + 0 : ipv4 + 1 : ipv6 + 2 : mac + @param eid - EID can be ip4, ip6 or mac + @param prefix_len - prefix len + @param locator_set_name - name of locator_set to add/del eid-table + @param vni - virtual network instance + @param key_id + HMAC_NO_KEY 0 + HMAC_SHA_1_96 1 + HMAC_SHA_256_128 2 + @param key - secret key +*/ +define lisp_add_del_local_eid +{ + u32 client_index; + u32 context; + u8 is_add; + u8 eid_type; + u8 eid[16]; + u8 prefix_len; + u8 locator_set_name[64]; + u32 vni; + u16 key_id; + u8 key[64]; +}; + +/** \brief Reply for local_eid add/del + @param context - returned sender context, to match reply w/ request + @param retval - return code +*/ +define lisp_add_del_local_eid_reply +{ + u32 context; + i32 retval; +}; + +/** \brief Add/delete map server + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param is_add - add address if non-zero; delete otherwise + @param is_ipv6 - if non-zero the address is ipv6, else ipv4 + @param ip_address - map server IP address +*/ +define lisp_add_del_map_server +{ + u32 client_index; + u32 context; + u8 is_add; + u8 is_ipv6; + u8 ip_address[16]; +}; + +/** \brief Reply for lisp_add_del_map_server + @param context - returned sender context, to match reply w/ request + @param retval - return code +*/ +define lisp_add_del_map_server_reply +{ + u32 context; + i32 retval; +}; + +/** \brief add or delete map-resolver + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param is_add - add address if non-zero, else delete + @param is_ipv6 - if non-zero the address is ipv6, else ipv4 + @param ip_address - array of address bytes +*/ +define lisp_add_del_map_resolver +{ + u32 client_index; + u32 context; + u8 is_add; + u8 is_ipv6; + u8 ip_address[16]; +}; + +/** \brief Reply for map_resolver add/del + @param context - returned sender context, to match reply w/ request + @param retval - return code +*/ +define lisp_add_del_map_resolver_reply +{ + u32 context; + i32 retval; +}; + +/** \brief enable or disable LISP feature + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param is_en - enable protocol if non-zero, else disable +*/ +define lisp_enable_disable +{ + u32 client_index; + u32 context; + u8 is_en; +}; + +/** \brief Reply for gpe enable/disable + @param context - returned sender context, to match reply w/ request + @param retval - return code +*/ +define lisp_enable_disable_reply +{ + u32 context; + i32 retval; +}; + +/** \brief configure or disable LISP PITR node + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param ls_name - locator set name + @param is_add - add locator set if non-zero, else disable pitr +*/ +define lisp_pitr_set_locator_set +{ + u32 client_index; + u32 context; + u8 is_add; + u8 ls_name[64]; +}; + +/** \brief Reply for lisp_pitr_set_locator_set + @param context - returned sender context, to match reply w/ request + @param retval - return code +*/ +define lisp_pitr_set_locator_set_reply +{ + u32 context; + i32 retval; +}; + +/** \brief Get state of LISP RLOC probing + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request +*/ +define show_lisp_rloc_probe_state +{ + u32 client_index; + u32 context; +}; + +/** \brief Reply for show_lisp_rloc_probe_state + @param context - returned sender context, to match reply w/ request + @param retval - return code + @param is_enabled - state of RLOC probing +*/ +define show_lisp_rloc_probe_state_reply +{ + u32 context; + i32 retval; + u8 is_enabled; +}; + +/** \brief enable/disable LISP RLOC probing + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param is_enable - enable if non-zero; disable otherwise +*/ +define lisp_rloc_probe_enable_disable +{ + u32 client_index; + u32 context; + u8 is_enabled; +}; + +/** \brief Reply for lisp_rloc_probe_enable_disable + @param context - returned sender context, to match reply w/ request + @param retval - return code +*/ +define lisp_rloc_probe_enable_disable_reply +{ + u32 context; + i32 retval; +}; + +/** \brief enable/disable LISP map-register + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param is_enable - enable if non-zero; disable otherwise +*/ +define lisp_map_register_enable_disable +{ + u32 client_index; + u32 context; + u8 is_enabled; +}; + +/** \brief Reply for lisp_map_register_enable_disable + @param context - returned sender context, to match reply w/ request + @param retval - return code +*/ +define lisp_map_register_enable_disable_reply +{ + u32 context; + i32 retval; +}; + +/** \brief Get state of LISP map-register + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request +*/ +define show_lisp_map_register_state +{ + u32 client_index; + u32 context; +}; + +/** \brief Reply for show_lisp_map_register_state + @param context - returned sender context, to match reply w/ request + @param retval - return code +*/ +define show_lisp_map_register_state_reply +{ + u32 context; + i32 retval; + u8 is_enabled; +}; + +/** \brief set LISP map-request mode. Based on configuration VPP will send + src/dest or just normal destination map requests. + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param mode - new map-request mode. Supported values are: + 0 - destination only + 1 - source/destaination +*/ +define lisp_map_request_mode +{ + u32 client_index; + u32 context; + u8 mode; +}; + +/** \brief Reply for lisp_map_request_mode + @param context - returned sender context, to match reply w/ request + @param retval - return code +*/ +define lisp_map_request_mode_reply +{ + u32 context; + i32 retval; +}; + +/** \brief Request for LISP map-request mode + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request +*/ +define show_lisp_map_request_mode +{ + u32 client_index; + u32 context; +}; + +/** \brief Reply for show_lisp_map_request_mode + @param context - returned sender context, to match reply w/ request + @param retval - return code + @param mode - map-request mode +*/ +define show_lisp_map_request_mode_reply +{ + u32 context; + i32 retval; + u8 mode; +}; + +/** \brief add or delete remote static mapping + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param is_add - add address if non-zero, else delete + @param is_src_dst - flag indicating src/dst based routing policy + @param del_all - if set, delete all remote mappings + @param vni - virtual network instance + @param action - negative map-reply action + @param eid_type - + 0 : ipv4 + 1 : ipv6 + 2 : mac + @param deid - dst EID + @param seid - src EID, valid only if is_src_dst is enabled + @param rloc_num - number of remote locators + @param rlocs - remote locator records + Structure of remote locator: + + define rloc_t { + u8 is_ip4; + u8 priority; + u8 weight; + u8 addr[16]; + } +*/ +define lisp_add_del_remote_mapping +{ + u32 client_index; + u32 context; + u8 is_add; + u8 is_src_dst; + u8 del_all; + u32 vni; + u8 action; + u8 eid_type; + u8 eid[16]; + u8 eid_len; + u8 seid[16]; + u8 seid_len; + u32 rloc_num; + u8 rlocs[0]; +}; + +/** \brief Reply for lisp_add_del_remote_mapping + @param context - returned sender context, to match reply w/ request + @param retval - return code +*/ +define lisp_add_del_remote_mapping_reply +{ + u32 context; + i32 retval; +}; + +/** \brief add or delete LISP adjacency adjacency + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param is_add - add address if non-zero, else delete + @param vni - virtual network instance + @param eid_type - + 0 : ipv4 + 1 : ipv6 + 2 : mac + @param reid - remote EID + @param leid - local EID +*/ +define lisp_add_del_adjacency +{ + u32 client_index; + u32 context; + u8 is_add; + u32 vni; + u8 eid_type; + u8 reid[16]; + u8 leid[16]; + u8 reid_len; + u8 leid_len; +}; + +/** \brief Reply for lisp_add_del_adjacency + @param context - returned sender context, to match reply w/ request + @param retval - return code +*/ +define lisp_add_del_adjacency_reply +{ + u32 context; + i32 retval; +}; + +/** \brief add or delete map request itr rlocs + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param is_add - add address if non-zero, else delete + @param locator_set_name - locator set name +*/ +define lisp_add_del_map_request_itr_rlocs +{ + u32 client_index; + u32 context; + u8 is_add; + u8 locator_set_name[64]; +}; + +/** \brief Reply for lisp_add_del_map_request_itr_rlocs + @param context - returned sender context, to match reply w/ request + @param retval - return code +*/ + +define lisp_add_del_map_request_itr_rlocs_reply +{ + u32 context; + i32 retval; +}; + +/** \brief map/unmap vni/bd_index to vrf + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param is_add - add or delete mapping + @param dp_table - virtual network id/bridge domain index + @param vrf - vrf +*/ +define lisp_eid_table_add_del_map +{ + u32 client_index; + u32 context; + u8 is_add; + u32 vni; + u32 dp_table; + u8 is_l2; +}; + +/** \brief Reply for lisp_eid_table_add_del_map + @param context - returned sender context, to match reply w/ request + @param retval - return code +*/ +define lisp_eid_table_add_del_map_reply +{ + u32 context; + i32 retval; +}; + +/** \brief Request for map lisp locator status + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param locator_set_index - index of locator_set + @param ls_name - locator set name + @param is_index_set - flag indicating whether ls_name or ls_index is set + */ +define lisp_locator_dump +{ + u32 client_index; + u32 context; + u32 ls_index; + u8 ls_name[64]; + u8 is_index_set; +}; + +/** \brief LISP locator_set status + @param local - if is set, then locator is local + @param locator_set_name - name of the locator_set + @param sw_if_index - sw_if_index of the locator + @param priority - locator priority + @param weight - locator weight + */ +define lisp_locator_details +{ + u32 context; + u8 local; + u32 sw_if_index; + u8 is_ipv6; + u8 ip_address[16]; + u8 priority; + u8 weight; +}; + +/** \brief LISP locator_set status + @param context - sender context, to match reply w/ request + @param ls_index - locator set index + @param ls_name - name of the locator set + */ +define lisp_locator_set_details +{ + u32 context; + u32 ls_index; + u8 ls_name[64]; +}; + +/** \brief Request for locator_set summary status + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param filter - filter type + Supported values: + 0: all locator sets + 1: local locator sets + 2: remote locator sets + */ +define lisp_locator_set_dump +{ + u32 client_index; + u32 context; + u8 filter; +}; + +/** \brief Dump lisp eid-table + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param locator_set_index - index of locator_set, if ~0 then the mapping + is negative + @param action - negative map request action + @param is_local - local if non-zero, else remote + @param eid_type: + 0 : ipv4 + 1 : ipv6 + 2 : mac + @param is_src_dst - EID is type of source/destination + @param eid - EID can be ip4, ip6 or mac + @param eid_prefix_len - prefix length + @param seid - source EID can be ip4, ip6 or mac + @param seid_prefix_len - source prefix length + @param vni - virtual network instance + @param ttl - time to live + @param authoritative - authoritative + @param key_id + HMAC_NO_KEY 0 + HMAC_SHA_1_96 1 + HMAC_SHA_256_128 2 + @param key - secret key +*/ + +define lisp_eid_table_details +{ + u32 context; + u32 locator_set_index; + u8 action; + u8 is_local; + u8 eid_type; + u8 is_src_dst; + u32 vni; + u8 eid[16]; + u8 eid_prefix_len; + u8 seid[16]; + u8 seid_prefix_len; + u32 ttl; + u8 authoritative; + u16 key_id; + u8 key[64]; +}; + +/** \brief Request for eid table summary status + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param eid_set - if non-zero request info about specific mapping + @param vni - virtual network instance; valid only if eid_set != 0 + @param prefix_length - prefix length if EID is IP address; + valid only if eid_set != 0 + @param eid_type - EID type; valid only if eid_set != 0 + Supported values: + 0: EID is IPv4 + 1: EID is IPv6 + 2: EID is ethernet address + @param eid - endpoint identifier + @param filter - filter type; + Support values: + 0: all eid + 1: local eid + 2: remote eid + */ +define lisp_eid_table_dump +{ + u32 client_index; + u32 context; + u8 eid_set; + u8 prefix_length; + u32 vni; + u8 eid_type; + u8 eid[16]; + u8 filter; +}; + +/** \brief LISP adjacency + @param eid_type - + 0 : ipv4 + 1 : ipv6 + 2 : mac + @param reid - remote EID + @param leid - local EID + @param reid_prefix_len - remote EID IP prefix length + @param leid_prefix_len - local EID IP prefix length + */ +typeonly manual_print manual_endian define lisp_adjacency +{ + u8 eid_type; + u8 reid[16]; + u8 leid[16]; + u8 reid_prefix_len; + u8 leid_prefix_len; +}; + +/** \brief LISP adjacency reply + @param count - number of adjacencies + @param adjacencies - array of adjacencies + */ +manual_endian manual_print define lisp_adjacencies_get_reply +{ + u32 context; + i32 retval; + u32 count; + vl_api_lisp_adjacency_t adjacencies[count]; +}; + +/** \brief Request for LISP adjacencies + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param vni - filter adjacencies by VNI + */ +define lisp_adjacencies_get +{ + u32 client_index; + u32 context; + u32 vni; +}; + +/** \brief Shows relationship between vni and vrf/bd + @param dp_table - VRF index or bridge domain index + @param vni - vitual network instance + */ +define lisp_eid_table_map_details +{ + u32 context; + u32 vni; + u32 dp_table; +}; + +/** \brief Request for lisp_eid_table_map_details + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param is_l2 - if set dump vni/bd mappings else vni/vrf + */ +define lisp_eid_table_map_dump +{ + u32 client_index; + u32 context; + u8 is_l2; +}; + +/** \brief Dumps all VNIs used in mappings + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + */ +define lisp_eid_table_vni_dump +{ + u32 client_index; + u32 context; +}; + +/** \brief reply to lisp_eid_table_vni_dump + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param vni - virtual network instance + */ +define lisp_eid_table_vni_details +{ + u32 client_index; + u32 context; + u32 vni; +}; + +/** \brief LISP map resolver status + @param is_ipv6 - if non-zero the address is ipv6, else ipv4 + @param ip_address - array of address bytes + */ +define lisp_map_resolver_details +{ + u32 context; + u8 is_ipv6; + u8 ip_address[16]; +}; + +/** \brief Request for map resolver summary status + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + */ +define lisp_map_resolver_dump +{ + u32 client_index; + u32 context; +}; + +/** \brief LISP map server details + @param is_ipv6 - if non-zero the address is ipv6, else ipv4 + @param ip_address - array of address bytes + */ +define lisp_map_server_details +{ + u32 context; + u8 is_ipv6; + u8 ip_address[16]; +}; + +/** \brief Request for map server summary status + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + */ +define lisp_map_server_dump +{ + u32 client_index; + u32 context; +}; + +/** \brief Request for lisp-gpe protocol status + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request +*/ +define show_lisp_status +{ + u32 client_index; + u32 context; +}; + +/** \brief Status of lisp, enable or disable + @param context - sender context, to match reply w/ request + @param feature_status - lisp enable if non-zero, else disable + @param gpe_status - lisp enable if non-zero, else disable +*/ +define show_lisp_status_reply +{ + u32 context; + i32 retval; + u8 feature_status; + u8 gpe_status; +}; + +/** \brief Get LISP map request itr rlocs status + @param context - sender context, to match reply w/ request + @param locator_set_name - name of the locator_set + */ +define lisp_get_map_request_itr_rlocs +{ + u32 client_index; + u32 context; +}; + +/** \brief Request for map request itr rlocs summary status + */ +define lisp_get_map_request_itr_rlocs_reply +{ + u32 context; + i32 retval; + u8 locator_set_name[64]; +}; + +/** \brief Request for lisp pitr status + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request +*/ +define show_lisp_pitr +{ + u32 client_index; + u32 context; +}; + +/** \brief Status of lisp pitr, enable or disable + @param context - sender context, to match reply w/ request + @param status - lisp pitr enable if non-zero, else disable + @param locator_set_name - name of the locator_set +*/ +define show_lisp_pitr_reply +{ + u32 context; + i32 retval; + u8 status; + u8 locator_set_name[64]; +}; + +/* + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ +
\ No newline at end of file diff --git a/src/vnet/lisp-cp/lisp_api.c b/src/vnet/lisp-cp/lisp_api.c new file mode 100644 index 00000000000..d3fc4627c5f --- /dev/null +++ b/src/vnet/lisp-cp/lisp_api.c @@ -0,0 +1,1257 @@ +/* + *------------------------------------------------------------------ + * lisp_api.c - lisp api + * + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + *------------------------------------------------------------------ + */ + +#include <vnet/vnet.h> +#include <vlibmemory/api.h> + +#include <vnet/interface.h> +#include <vnet/api_errno.h> +#include <vnet/lisp-cp/control.h> +#include <vnet/lisp-gpe/lisp_gpe.h> + +#include <vnet/vnet_msg_enum.h> + +#define vl_typedefs /* define message structures */ +#include <vnet/vnet_all_api_h.h> +#undef vl_typedefs + +#define vl_endianfun /* define message structures */ +#include <vnet/vnet_all_api_h.h> +#undef vl_endianfun + +/* instantiate all the print functions we know about */ +#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__) +#define vl_printfun +#include <vnet/vnet_all_api_h.h> +#undef vl_printfun + +#include <vlibapi/api_helper_macros.h> + +#define foreach_vpe_api_msg \ +_(LISP_ADD_DEL_LOCATOR_SET, lisp_add_del_locator_set) \ +_(LISP_ADD_DEL_LOCATOR, lisp_add_del_locator) \ +_(LISP_ADD_DEL_LOCAL_EID, lisp_add_del_local_eid) \ +_(LISP_ADD_DEL_MAP_RESOLVER, lisp_add_del_map_resolver) \ +_(LISP_ADD_DEL_MAP_SERVER, lisp_add_del_map_server) \ +_(LISP_ENABLE_DISABLE, lisp_enable_disable) \ +_(LISP_RLOC_PROBE_ENABLE_DISABLE, lisp_rloc_probe_enable_disable) \ +_(LISP_MAP_REGISTER_ENABLE_DISABLE, lisp_map_register_enable_disable) \ +_(LISP_ADD_DEL_REMOTE_MAPPING, lisp_add_del_remote_mapping) \ +_(LISP_ADD_DEL_ADJACENCY, lisp_add_del_adjacency) \ +_(LISP_PITR_SET_LOCATOR_SET, lisp_pitr_set_locator_set) \ +_(LISP_MAP_REQUEST_MODE, lisp_map_request_mode) \ +_(LISP_EID_TABLE_ADD_DEL_MAP, lisp_eid_table_add_del_map) \ +_(LISP_LOCATOR_SET_DUMP, lisp_locator_set_dump) \ +_(LISP_LOCATOR_DUMP, lisp_locator_dump) \ +_(LISP_EID_TABLE_DUMP, lisp_eid_table_dump) \ +_(LISP_MAP_RESOLVER_DUMP, lisp_map_resolver_dump) \ +_(LISP_MAP_SERVER_DUMP, lisp_map_server_dump) \ +_(LISP_EID_TABLE_MAP_DUMP, lisp_eid_table_map_dump) \ +_(LISP_EID_TABLE_VNI_DUMP, lisp_eid_table_vni_dump) \ +_(LISP_ADJACENCIES_GET, lisp_adjacencies_get) \ +_(SHOW_LISP_RLOC_PROBE_STATE, show_lisp_rloc_probe_state) \ +_(SHOW_LISP_MAP_REGISTER_STATE, show_lisp_map_register_state) \ +_(SHOW_LISP_STATUS, show_lisp_status) \ +_(LISP_ADD_DEL_MAP_REQUEST_ITR_RLOCS, \ + lisp_add_del_map_request_itr_rlocs) \ +_(LISP_GET_MAP_REQUEST_ITR_RLOCS, lisp_get_map_request_itr_rlocs) \ +_(SHOW_LISP_PITR, show_lisp_pitr) \ +_(SHOW_LISP_MAP_REQUEST_MODE, show_lisp_map_request_mode) \ + +/** Used for transferring locators via VPP API */ +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct { + u8 is_ip4; /**< is locator an IPv4 address */ + u8 priority; /**< locator priority */ + u8 weight; /**< locator weight */ + u8 addr[16]; /**< IPv4/IPv6 address */ +}) rloc_t; +/* *INDENT-ON* */ + +/** Used for transferring locators via VPP API */ +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct { + u32 sw_if_index; /**< locator sw_if_index */ + u8 priority; /**< locator priority */ + u8 weight; /**< locator weight */ +}) ls_locator_t; +/* *INDENT-ON* */ + +static locator_t * +unformat_lisp_locs (void *rmt_locs, u32 rloc_num) +{ + u32 i; + locator_t *locs = 0, loc; + rloc_t *r; + + for (i = 0; i < rloc_num; i++) + { + /* remote locators */ + r = &((rloc_t *) rmt_locs)[i]; + memset (&loc, 0, sizeof (loc)); + gid_address_ip_set (&loc.address, &r->addr, r->is_ip4 ? IP4 : IP6); + + loc.priority = r->priority; + loc.weight = r->weight; + + vec_add1 (locs, loc); + } + return locs; +} + +static void +vl_api_lisp_add_del_locator_set_t_handler (vl_api_lisp_add_del_locator_set_t * + mp) +{ + vl_api_lisp_add_del_locator_set_reply_t *rmp; + int rv = 0; + vnet_lisp_add_del_locator_set_args_t _a, *a = &_a; + locator_t locator; + ls_locator_t *ls_loc; + u32 ls_index = ~0, locator_num; + u8 *locator_name = NULL; + int i; + + memset (a, 0, sizeof (a[0])); + + locator_name = format (0, "%s", mp->locator_set_name); + + a->name = locator_name; + a->is_add = mp->is_add; + a->local = 1; + locator_num = clib_net_to_host_u32 (mp->locator_num); + + memset (&locator, 0, sizeof (locator)); + for (i = 0; i < locator_num; i++) + { + ls_loc = &((ls_locator_t *) mp->locators)[i]; + VALIDATE_SW_IF_INDEX (ls_loc); + + locator.sw_if_index = htonl (ls_loc->sw_if_index); + locator.priority = ls_loc->priority; + locator.weight = ls_loc->weight; + locator.local = 1; + vec_add1 (a->locators, locator); + } + + rv = vnet_lisp_add_del_locator_set (a, &ls_index); + + BAD_SW_IF_INDEX_LABEL; + + vec_free (locator_name); + vec_free (a->locators); + + /* *INDENT-OFF* */ + REPLY_MACRO2 (VL_API_LISP_ADD_DEL_LOCATOR_SET_REPLY, + ({ + rmp->ls_index = clib_host_to_net_u32 (ls_index); + })); + /* *INDENT-ON* */ +} + +static void +vl_api_lisp_add_del_locator_t_handler (vl_api_lisp_add_del_locator_t * mp) +{ + vl_api_lisp_add_del_locator_reply_t *rmp; + int rv = 0; + locator_t locator, *locators = NULL; + vnet_lisp_add_del_locator_set_args_t _a, *a = &_a; + u32 ls_index = ~0; + u8 *locator_name = NULL; + + memset (&locator, 0, sizeof (locator)); + memset (a, 0, sizeof (a[0])); + + locator.sw_if_index = ntohl (mp->sw_if_index); + locator.priority = mp->priority; + locator.weight = mp->weight; + locator.local = 1; + vec_add1 (locators, locator); + + locator_name = format (0, "%s", mp->locator_set_name); + + a->name = locator_name; + a->locators = locators; + a->is_add = mp->is_add; + a->local = 1; + + rv = vnet_lisp_add_del_locator (a, NULL, &ls_index); + + vec_free (locators); + vec_free (locator_name); + + REPLY_MACRO (VL_API_LISP_ADD_DEL_LOCATOR_REPLY); +} + +static int +unformat_lisp_eid_api (gid_address_t * dst, u32 vni, u8 type, void *src, + u8 len) +{ + switch (type) + { + case 0: /* ipv4 */ + gid_address_type (dst) = GID_ADDR_IP_PREFIX; + gid_address_ip_set (dst, src, IP4); + gid_address_ippref_len (dst) = len; + ip_prefix_normalize (&gid_address_ippref (dst)); + break; + case 1: /* ipv6 */ + gid_address_type (dst) = GID_ADDR_IP_PREFIX; + gid_address_ip_set (dst, src, IP6); + gid_address_ippref_len (dst) = len; + ip_prefix_normalize (&gid_address_ippref (dst)); + break; + case 2: /* l2 mac */ + gid_address_type (dst) = GID_ADDR_MAC; + clib_memcpy (&gid_address_mac (dst), src, 6); + break; + default: + /* unknown type */ + return VNET_API_ERROR_INVALID_VALUE; + } + + gid_address_vni (dst) = vni; + + return 0; +} + +static void +vl_api_lisp_add_del_local_eid_t_handler (vl_api_lisp_add_del_local_eid_t * mp) +{ + vl_api_lisp_add_del_local_eid_reply_t *rmp; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + int rv = 0; + gid_address_t _eid, *eid = &_eid; + uword *p = NULL; + u32 locator_set_index = ~0, map_index = ~0; + vnet_lisp_add_del_mapping_args_t _a, *a = &_a; + u8 *name = NULL, *key = NULL; + memset (a, 0, sizeof (a[0])); + memset (eid, 0, sizeof (eid[0])); + + rv = unformat_lisp_eid_api (eid, clib_net_to_host_u32 (mp->vni), + mp->eid_type, mp->eid, mp->prefix_len); + if (rv) + goto out; + + name = format (0, "%s", mp->locator_set_name); + p = hash_get_mem (lcm->locator_set_index_by_name, name); + if (!p) + { + rv = VNET_API_ERROR_INVALID_VALUE; + goto out; + } + locator_set_index = p[0]; + + if (*mp->key) + key = format (0, "%s", mp->key); + + /* XXX treat batch configuration */ + a->is_add = mp->is_add; + gid_address_copy (&a->eid, eid); + a->locator_set_index = locator_set_index; + a->local = 1; + a->key = key; + a->key_id = clib_net_to_host_u16 (mp->key_id); + + rv = vnet_lisp_add_del_local_mapping (a, &map_index); + +out: + vec_free (name); + vec_free (key); + gid_address_free (&a->eid); + + REPLY_MACRO (VL_API_LISP_ADD_DEL_LOCAL_EID_REPLY); +} + +static void + vl_api_lisp_eid_table_add_del_map_t_handler + (vl_api_lisp_eid_table_add_del_map_t * mp) +{ + vl_api_lisp_eid_table_add_del_map_reply_t *rmp; + int rv = 0; + rv = vnet_lisp_eid_table_map (clib_net_to_host_u32 (mp->vni), + clib_net_to_host_u32 (mp->dp_table), + mp->is_l2, mp->is_add); +REPLY_MACRO (VL_API_LISP_EID_TABLE_ADD_DEL_MAP_REPLY)} + +static void +vl_api_lisp_add_del_map_server_t_handler (vl_api_lisp_add_del_map_server_t + * mp) +{ + vl_api_lisp_add_del_map_server_reply_t *rmp; + int rv = 0; + ip_address_t addr; + + memset (&addr, 0, sizeof (addr)); + + ip_address_set (&addr, mp->ip_address, mp->is_ipv6 ? IP6 : IP4); + rv = vnet_lisp_add_del_map_server (&addr, mp->is_add); + + REPLY_MACRO (VL_API_LISP_ADD_DEL_MAP_SERVER_REPLY); +} + +static void +vl_api_lisp_add_del_map_resolver_t_handler (vl_api_lisp_add_del_map_resolver_t + * mp) +{ + vl_api_lisp_add_del_map_resolver_reply_t *rmp; + int rv = 0; + vnet_lisp_add_del_map_resolver_args_t _a, *a = &_a; + + memset (a, 0, sizeof (a[0])); + + a->is_add = mp->is_add; + ip_address_set (&a->address, mp->ip_address, mp->is_ipv6 ? IP6 : IP4); + + rv = vnet_lisp_add_del_map_resolver (a); + + REPLY_MACRO (VL_API_LISP_ADD_DEL_MAP_RESOLVER_REPLY); +} + +static void + vl_api_lisp_map_register_enable_disable_t_handler + (vl_api_lisp_map_register_enable_disable_t * mp) +{ + vl_api_lisp_map_register_enable_disable_reply_t *rmp; + int rv = 0; + + vnet_lisp_map_register_enable_disable (mp->is_enabled); + REPLY_MACRO (VL_API_LISP_ENABLE_DISABLE_REPLY); +} + +static void + vl_api_lisp_rloc_probe_enable_disable_t_handler + (vl_api_lisp_rloc_probe_enable_disable_t * mp) +{ + vl_api_lisp_rloc_probe_enable_disable_reply_t *rmp; + int rv = 0; + + vnet_lisp_rloc_probe_enable_disable (mp->is_enabled); + REPLY_MACRO (VL_API_LISP_ENABLE_DISABLE_REPLY); +} + +static void +vl_api_lisp_enable_disable_t_handler (vl_api_lisp_enable_disable_t * mp) +{ + vl_api_lisp_enable_disable_reply_t *rmp; + int rv = 0; + + vnet_lisp_enable_disable (mp->is_en); + REPLY_MACRO (VL_API_LISP_ENABLE_DISABLE_REPLY); +} + +static void + vl_api_show_lisp_map_request_mode_t_handler + (vl_api_show_lisp_map_request_mode_t * mp) +{ + int rv = 0; + vl_api_show_lisp_map_request_mode_reply_t *rmp; + + /* *INDENT-OFF* */ + REPLY_MACRO2(VL_API_SHOW_LISP_MAP_REQUEST_MODE_REPLY, + ({ + rmp->mode = vnet_lisp_get_map_request_mode (); + })); + /* *INDENT-ON* */ +} + +static void +vl_api_lisp_map_request_mode_t_handler (vl_api_lisp_map_request_mode_t * mp) +{ + vl_api_lisp_map_request_mode_reply_t *rmp; + int rv = 0; + + rv = vnet_lisp_set_map_request_mode (mp->mode); + + REPLY_MACRO (VL_API_LISP_MAP_REQUEST_MODE_REPLY); +} + +static void +vl_api_lisp_pitr_set_locator_set_t_handler (vl_api_lisp_pitr_set_locator_set_t + * mp) +{ + vl_api_lisp_pitr_set_locator_set_reply_t *rmp; + int rv = 0; + u8 *ls_name = 0; + + ls_name = format (0, "%s", mp->ls_name); + rv = vnet_lisp_pitr_set_locator_set (ls_name, mp->is_add); + vec_free (ls_name); + + REPLY_MACRO (VL_API_LISP_PITR_SET_LOCATOR_SET_REPLY); +} + +static void + vl_api_lisp_add_del_map_request_itr_rlocs_t_handler + (vl_api_lisp_add_del_map_request_itr_rlocs_t * mp) +{ + vl_api_lisp_add_del_map_request_itr_rlocs_reply_t *rmp; + int rv = 0; + u8 *locator_set_name = NULL; + vnet_lisp_add_del_mreq_itr_rloc_args_t _a, *a = &_a; + + locator_set_name = format (0, "%s", mp->locator_set_name); + + a->is_add = mp->is_add; + a->locator_set_name = locator_set_name; + + rv = vnet_lisp_add_del_mreq_itr_rlocs (a); + + vec_free (locator_set_name); + + REPLY_MACRO (VL_API_LISP_ADD_DEL_MAP_REQUEST_ITR_RLOCS_REPLY); +} + +static void + vl_api_lisp_add_del_remote_mapping_t_handler + (vl_api_lisp_add_del_remote_mapping_t * mp) +{ + locator_t *rlocs = 0; + vl_api_lisp_add_del_remote_mapping_reply_t *rmp; + int rv = 0; + gid_address_t _eid, *eid = &_eid; + u32 rloc_num = clib_net_to_host_u32 (mp->rloc_num); + + memset (eid, 0, sizeof (eid[0])); + + rv = unformat_lisp_eid_api (eid, clib_net_to_host_u32 (mp->vni), + mp->eid_type, mp->eid, mp->eid_len); + if (rv) + goto send_reply; + + rlocs = unformat_lisp_locs (mp->rlocs, rloc_num); + + if (!mp->is_add) + { + vnet_lisp_add_del_adjacency_args_t _a, *a = &_a; + gid_address_copy (&a->reid, eid); + a->is_add = 0; + rv = vnet_lisp_add_del_adjacency (a); + if (rv) + { + goto out; + } + } + + /* NOTE: for now this works as a static remote mapping, i.e., + * not authoritative and ttl infinite. */ + rv = vnet_lisp_add_del_mapping (eid, rlocs, mp->action, 0, ~0, + mp->is_add, 1 /* is_static */ , 0); + + if (mp->del_all) + vnet_lisp_clear_all_remote_adjacencies (); + +out: + vec_free (rlocs); +send_reply: + REPLY_MACRO (VL_API_LISP_ADD_DEL_REMOTE_MAPPING_REPLY); +} + +static void +vl_api_lisp_add_del_adjacency_t_handler (vl_api_lisp_add_del_adjacency_t * mp) +{ + vl_api_lisp_add_del_adjacency_reply_t *rmp; + vnet_lisp_add_del_adjacency_args_t _a, *a = &_a; + + int rv = 0; + memset (a, 0, sizeof (a[0])); + + rv = unformat_lisp_eid_api (&a->leid, clib_net_to_host_u32 (mp->vni), + mp->eid_type, mp->leid, mp->leid_len); + rv |= unformat_lisp_eid_api (&a->reid, clib_net_to_host_u32 (mp->vni), + mp->eid_type, mp->reid, mp->reid_len); + + if (rv) + goto send_reply; + + a->is_add = mp->is_add; + rv = vnet_lisp_add_del_adjacency (a); + +send_reply: + REPLY_MACRO (VL_API_LISP_ADD_DEL_ADJACENCY_REPLY); +} + +static void +send_lisp_locator_details (lisp_cp_main_t * lcm, + locator_t * loc, + unix_shared_memory_queue_t * q, u32 context) +{ + vl_api_lisp_locator_details_t *rmp; + + rmp = vl_msg_api_alloc (sizeof (*rmp)); + memset (rmp, 0, sizeof (*rmp)); + rmp->_vl_msg_id = ntohs (VL_API_LISP_LOCATOR_DETAILS); + rmp->context = context; + + rmp->local = loc->local; + if (loc->local) + { + rmp->sw_if_index = ntohl (loc->sw_if_index); + } + else + { + rmp->is_ipv6 = gid_address_ip_version (&loc->address); + ip_address_copy_addr (rmp->ip_address, &gid_address_ip (&loc->address)); + } + rmp->priority = loc->priority; + rmp->weight = loc->weight; + + vl_msg_api_send_shmem (q, (u8 *) & rmp); +} + +static void +vl_api_lisp_locator_dump_t_handler (vl_api_lisp_locator_dump_t * mp) +{ + u8 *ls_name = 0; + unix_shared_memory_queue_t *q = 0; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + locator_set_t *lsit = 0; + locator_t *loc = 0; + u32 ls_index = ~0, *locit = 0; + uword *p = 0; + + q = vl_api_client_index_to_input_queue (mp->client_index); + if (q == 0) + { + return; + } + + if (mp->is_index_set) + ls_index = htonl (mp->ls_index); + else + { + /* make sure we get a proper C-string */ + mp->ls_name[sizeof (mp->ls_name) - 1] = 0; + ls_name = format (0, "%s", mp->ls_name); + p = hash_get_mem (lcm->locator_set_index_by_name, ls_name); + if (!p) + goto out; + ls_index = p[0]; + } + + if (pool_is_free_index (lcm->locator_set_pool, ls_index)) + return; + + lsit = pool_elt_at_index (lcm->locator_set_pool, ls_index); + + vec_foreach (locit, lsit->locator_indices) + { + loc = pool_elt_at_index (lcm->locator_pool, locit[0]); + send_lisp_locator_details (lcm, loc, q, mp->context); + }; +out: + vec_free (ls_name); +} + +static void +send_lisp_locator_set_details (lisp_cp_main_t * lcm, + locator_set_t * lsit, + unix_shared_memory_queue_t * q, + u32 context, u32 ls_index) +{ + vl_api_lisp_locator_set_details_t *rmp; + u8 *str = 0; + + rmp = vl_msg_api_alloc (sizeof (*rmp)); + memset (rmp, 0, sizeof (*rmp)); + rmp->_vl_msg_id = ntohs (VL_API_LISP_LOCATOR_SET_DETAILS); + rmp->context = context; + + rmp->ls_index = htonl (ls_index); + if (lsit->local) + { + ASSERT (lsit->name != NULL); + strncpy ((char *) rmp->ls_name, (char *) lsit->name, + vec_len (lsit->name)); + } + else + { + str = format (0, "<remote-%d>", ls_index); + strncpy ((char *) rmp->ls_name, (char *) str, vec_len (str)); + vec_free (str); + } + + vl_msg_api_send_shmem (q, (u8 *) & rmp); +} + +static void +vl_api_lisp_locator_set_dump_t_handler (vl_api_lisp_locator_set_dump_t * mp) +{ + unix_shared_memory_queue_t *q = NULL; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + locator_set_t *lsit = NULL; + u8 filter; + + q = vl_api_client_index_to_input_queue (mp->client_index); + if (q == 0) + { + return; + } + + filter = mp->filter; + /* *INDENT-OFF* */ + pool_foreach (lsit, lcm->locator_set_pool, + ({ + if (filter && !((1 == filter && lsit->local) || + (2 == filter && !lsit->local))) + { + continue; + } + send_lisp_locator_set_details (lcm, lsit, q, mp->context, + lsit - lcm->locator_set_pool); + })); + /* *INDENT-ON* */ +} + +static void +lisp_fid_put_api (u8 * dst, fid_address_t * src, u8 * prefix_length) +{ + ASSERT (prefix_length); + ip_prefix_t *ippref = &fid_addr_ippref (src); + + switch (fid_addr_type (src)) + { + case FID_ADDR_IP_PREF: + if (ip_prefix_version (ippref) == IP4) + clib_memcpy (dst, &ip_prefix_v4 (ippref), 4); + else + clib_memcpy (dst, &ip_prefix_v6 (ippref), 16); + prefix_length[0] = ip_prefix_len (ippref); + break; + + case FID_ADDR_MAC: + prefix_length[0] = 0; + clib_memcpy (dst, fid_addr_mac (src), 6); + break; + + default: + clib_warning ("Unknown FID type %d!", fid_addr_type (src)); + break; + } +} + +static u8 +fid_type_to_api_type (fid_address_t * fid) +{ + ip_prefix_t *ippref; + + switch (fid_addr_type (fid)) + { + case FID_ADDR_IP_PREF: + ippref = &fid_addr_ippref (fid); + if (ip_prefix_version (ippref) == IP4) + return 0; + else if (ip_prefix_version (ippref) == IP6) + return 1; + else + return ~0; + + case FID_ADDR_MAC: + return 2; + } + + return ~0; +} + +static void +send_lisp_eid_table_details (mapping_t * mapit, + unix_shared_memory_queue_t * q, + u32 context, u8 filter) +{ + fid_address_t *fid; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + locator_set_t *ls = 0; + vl_api_lisp_eid_table_details_t *rmp = NULL; + gid_address_t *gid = NULL; + u8 *mac = 0; + ip_prefix_t *ip_prefix = NULL; + + switch (filter) + { + case 0: /* all mappings */ + break; + + case 1: /* local only */ + if (!mapit->local) + return; + break; + case 2: /* remote only */ + if (mapit->local) + return; + break; + default: + clib_warning ("Filter error, unknown filter: %d", filter); + return; + } + + gid = &mapit->eid; + ip_prefix = &gid_address_ippref (gid); + mac = gid_address_mac (gid); + + rmp = vl_msg_api_alloc (sizeof (*rmp)); + memset (rmp, 0, sizeof (*rmp)); + rmp->_vl_msg_id = ntohs (VL_API_LISP_EID_TABLE_DETAILS); + + ls = pool_elt_at_index (lcm->locator_set_pool, mapit->locator_set_index); + if (vec_len (ls->locator_indices) == 0) + rmp->locator_set_index = ~0; + else + rmp->locator_set_index = clib_host_to_net_u32 (mapit->locator_set_index); + + rmp->is_local = mapit->local; + rmp->ttl = clib_host_to_net_u32 (mapit->ttl); + rmp->action = mapit->action; + rmp->authoritative = mapit->authoritative; + + switch (gid_address_type (gid)) + { + case GID_ADDR_SRC_DST: + rmp->is_src_dst = 1; + fid = &gid_address_sd_src (gid); + rmp->eid_type = fid_type_to_api_type (fid); + lisp_fid_put_api (rmp->seid, &gid_address_sd_src (gid), + &rmp->seid_prefix_len); + lisp_fid_put_api (rmp->eid, &gid_address_sd_dst (gid), + &rmp->eid_prefix_len); + break; + case GID_ADDR_IP_PREFIX: + rmp->eid_prefix_len = ip_prefix_len (ip_prefix); + if (ip_prefix_version (ip_prefix) == IP4) + { + rmp->eid_type = 0; /* ipv4 type */ + clib_memcpy (rmp->eid, &ip_prefix_v4 (ip_prefix), + sizeof (ip_prefix_v4 (ip_prefix))); + } + else + { + rmp->eid_type = 1; /* ipv6 type */ + clib_memcpy (rmp->eid, &ip_prefix_v6 (ip_prefix), + sizeof (ip_prefix_v6 (ip_prefix))); + } + break; + case GID_ADDR_MAC: + rmp->eid_type = 2; /* l2 mac type */ + clib_memcpy (rmp->eid, mac, 6); + break; + default: + ASSERT (0); + } + rmp->context = context; + rmp->vni = clib_host_to_net_u32 (gid_address_vni (gid)); + rmp->key_id = clib_host_to_net_u16 (mapit->key_id); + memcpy (rmp->key, mapit->key, vec_len (mapit->key)); + vl_msg_api_send_shmem (q, (u8 *) & rmp); +} + +static void +vl_api_lisp_eid_table_dump_t_handler (vl_api_lisp_eid_table_dump_t * mp) +{ + u32 mi; + unix_shared_memory_queue_t *q = NULL; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + mapping_t *mapit = NULL; + gid_address_t _eid, *eid = &_eid; + + q = vl_api_client_index_to_input_queue (mp->client_index); + if (q == 0) + { + return; + } + + if (mp->eid_set) + { + memset (eid, 0, sizeof (*eid)); + + unformat_lisp_eid_api (eid, clib_net_to_host_u32 (mp->vni), + mp->eid_type, mp->eid, mp->prefix_length); + + mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, eid); + if ((u32) ~ 0 == mi) + return; + + mapit = pool_elt_at_index (lcm->mapping_pool, mi); + send_lisp_eid_table_details (mapit, q, mp->context, + 0 /* ignore filter */ ); + } + else + { + /* *INDENT-OFF* */ + pool_foreach (mapit, lcm->mapping_pool, + ({ + send_lisp_eid_table_details(mapit, q, mp->context, + mp->filter); + })); + /* *INDENT-ON* */ + } +} + +static void +send_lisp_map_server_details (ip_address_t * ip, + unix_shared_memory_queue_t * q, u32 context) +{ + vl_api_lisp_map_server_details_t *rmp = NULL; + + rmp = vl_msg_api_alloc (sizeof (*rmp)); + memset (rmp, 0, sizeof (*rmp)); + rmp->_vl_msg_id = ntohs (VL_API_LISP_MAP_SERVER_DETAILS); + + switch (ip_addr_version (ip)) + { + case IP4: + rmp->is_ipv6 = 0; + clib_memcpy (rmp->ip_address, &ip_addr_v4 (ip), + sizeof (ip_addr_v4 (ip))); + break; + + case IP6: + rmp->is_ipv6 = 1; + clib_memcpy (rmp->ip_address, &ip_addr_v6 (ip), + sizeof (ip_addr_v6 (ip))); + break; + + default: + ASSERT (0); + } + rmp->context = context; + + vl_msg_api_send_shmem (q, (u8 *) & rmp); +} + +static void +vl_api_lisp_map_server_dump_t_handler (vl_api_lisp_map_server_dump_t * mp) +{ + unix_shared_memory_queue_t *q = NULL; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + lisp_msmr_t *mr; + + q = vl_api_client_index_to_input_queue (mp->client_index); + if (q == 0) + { + return; + } + + vec_foreach (mr, lcm->map_servers) + { + send_lisp_map_server_details (&mr->address, q, mp->context); + } +} + +static void +send_lisp_map_resolver_details (ip_address_t * ip, + unix_shared_memory_queue_t * q, u32 context) +{ + vl_api_lisp_map_resolver_details_t *rmp = NULL; + + rmp = vl_msg_api_alloc (sizeof (*rmp)); + memset (rmp, 0, sizeof (*rmp)); + rmp->_vl_msg_id = ntohs (VL_API_LISP_MAP_RESOLVER_DETAILS); + + switch (ip_addr_version (ip)) + { + case IP4: + rmp->is_ipv6 = 0; + clib_memcpy (rmp->ip_address, &ip_addr_v4 (ip), + sizeof (ip_addr_v4 (ip))); + break; + + case IP6: + rmp->is_ipv6 = 1; + clib_memcpy (rmp->ip_address, &ip_addr_v6 (ip), + sizeof (ip_addr_v6 (ip))); + break; + + default: + ASSERT (0); + } + rmp->context = context; + + vl_msg_api_send_shmem (q, (u8 *) & rmp); +} + +static void +vl_api_lisp_map_resolver_dump_t_handler (vl_api_lisp_map_resolver_dump_t * mp) +{ + unix_shared_memory_queue_t *q = NULL; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + lisp_msmr_t *mr; + + q = vl_api_client_index_to_input_queue (mp->client_index); + if (q == 0) + { + return; + } + + vec_foreach (mr, lcm->map_resolvers) + { + send_lisp_map_resolver_details (&mr->address, q, mp->context); + } +} + +static void +send_eid_table_map_pair (hash_pair_t * p, + unix_shared_memory_queue_t * q, u32 context) +{ + vl_api_lisp_eid_table_map_details_t *rmp = NULL; + + rmp = vl_msg_api_alloc (sizeof (*rmp)); + memset (rmp, 0, sizeof (*rmp)); + rmp->_vl_msg_id = ntohs (VL_API_LISP_EID_TABLE_MAP_DETAILS); + + rmp->vni = clib_host_to_net_u32 (p->key); + rmp->dp_table = clib_host_to_net_u32 (p->value[0]); + rmp->context = context; + vl_msg_api_send_shmem (q, (u8 *) & rmp); +} + +static void +vl_api_lisp_eid_table_map_dump_t_handler (vl_api_lisp_eid_table_map_dump_t * + mp) +{ + unix_shared_memory_queue_t *q = NULL; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + hash_pair_t *p; + uword *vni_table = 0; + + q = vl_api_client_index_to_input_queue (mp->client_index); + if (q == 0) + { + return; + } + + if (mp->is_l2) + { + vni_table = lcm->bd_id_by_vni; + } + else + { + vni_table = lcm->table_id_by_vni; + } + + /* *INDENT-OFF* */ + hash_foreach_pair (p, vni_table, + ({ + send_eid_table_map_pair (p, q, mp->context); + })); + /* *INDENT-ON* */ +} + +static void +send_eid_table_vni (u32 vni, unix_shared_memory_queue_t * q, u32 context) +{ + vl_api_lisp_eid_table_vni_details_t *rmp = 0; + + rmp = vl_msg_api_alloc (sizeof (*rmp)); + memset (rmp, 0, sizeof (*rmp)); + rmp->_vl_msg_id = ntohs (VL_API_LISP_EID_TABLE_VNI_DETAILS); + rmp->context = context; + rmp->vni = clib_host_to_net_u32 (vni); + vl_msg_api_send_shmem (q, (u8 *) & rmp); +} + +static void +lisp_adjacency_copy (vl_api_lisp_adjacency_t * dst, lisp_adjacency_t * adjs) +{ + lisp_adjacency_t *adj; + vl_api_lisp_adjacency_t a; + u32 i, n = vec_len (adjs); + + for (i = 0; i < n; i++) + { + adj = vec_elt_at_index (adjs, i); + memset (&a, 0, sizeof (a)); + + switch (gid_address_type (&adj->reid)) + { + case GID_ADDR_IP_PREFIX: + a.reid_prefix_len = gid_address_ippref_len (&adj->reid); + a.leid_prefix_len = gid_address_ippref_len (&adj->leid); + if (gid_address_ip_version (&adj->reid) == IP4) + { + a.eid_type = 0; /* ipv4 type */ + clib_memcpy (a.reid, &gid_address_ip (&adj->reid), 4); + clib_memcpy (a.leid, &gid_address_ip (&adj->leid), 4); + } + else + { + a.eid_type = 1; /* ipv6 type */ + clib_memcpy (a.reid, &gid_address_ip (&adj->reid), 16); + clib_memcpy (a.leid, &gid_address_ip (&adj->leid), 16); + } + break; + case GID_ADDR_MAC: + a.eid_type = 2; /* l2 mac type */ + mac_copy (a.reid, gid_address_mac (&adj->reid)); + mac_copy (a.leid, gid_address_mac (&adj->leid)); + break; + default: + ASSERT (0); + } + dst[i] = a; + } +} + +static void + vl_api_show_lisp_rloc_probe_state_t_handler + (vl_api_show_lisp_rloc_probe_state_t * mp) +{ + vl_api_show_lisp_rloc_probe_state_reply_t *rmp = 0; + int rv = 0; + + /* *INDENT-OFF* */ + REPLY_MACRO2 (VL_API_SHOW_LISP_RLOC_PROBE_STATE_REPLY, + { + rmp->is_enabled = vnet_lisp_rloc_probe_state_get (); + }); + /* *INDENT-ON* */ +} + +static void + vl_api_show_lisp_map_register_state_t_handler + (vl_api_show_lisp_map_register_state_t * mp) +{ + vl_api_show_lisp_map_register_state_reply_t *rmp = 0; + int rv = 0; + + /* *INDENT-OFF* */ + REPLY_MACRO2 (VL_API_SHOW_LISP_MAP_REGISTER_STATE_REPLY, + { + rmp->is_enabled = vnet_lisp_map_register_state_get (); + }); + /* *INDENT-ON* */ +} + +static void +vl_api_lisp_adjacencies_get_t_handler (vl_api_lisp_adjacencies_get_t * mp) +{ + vl_api_lisp_adjacencies_get_reply_t *rmp = 0; + lisp_adjacency_t *adjs = 0; + int rv = 0; + vl_api_lisp_adjacency_t a; + u32 size = ~0; + u32 vni = clib_net_to_host_u32 (mp->vni); + + adjs = vnet_lisp_adjacencies_get_by_vni (vni); + size = vec_len (adjs) * sizeof (a); + + /* *INDENT-OFF* */ + REPLY_MACRO4 (VL_API_LISP_ADJACENCIES_GET_REPLY, size, + { + rmp->count = clib_host_to_net_u32 (vec_len (adjs)); + lisp_adjacency_copy (rmp->adjacencies, adjs); + }); + /* *INDENT-ON* */ + + vec_free (adjs); +} + +static void +vl_api_lisp_eid_table_vni_dump_t_handler (vl_api_lisp_eid_table_vni_dump_t * + mp) +{ + hash_pair_t *p; + u32 *vnis = 0; + unix_shared_memory_queue_t *q = 0; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + + q = vl_api_client_index_to_input_queue (mp->client_index); + if (q == 0) + { + return; + } + + /* *INDENT-OFF* */ + hash_foreach_pair (p, lcm->table_id_by_vni, + ({ + hash_set (vnis, p->key, 0); + })); + + hash_foreach_pair (p, lcm->bd_id_by_vni, + ({ + hash_set (vnis, p->key, 0); + })); + + hash_foreach_pair (p, vnis, + ({ + send_eid_table_vni (p->key, q, mp->context); + })); + /* *INDENT-ON* */ + + hash_free (vnis); +} + +static void +vl_api_show_lisp_status_t_handler (vl_api_show_lisp_status_t * mp) +{ + unix_shared_memory_queue_t *q = NULL; + vl_api_show_lisp_status_reply_t *rmp = NULL; + int rv = 0; + + q = vl_api_client_index_to_input_queue (mp->client_index); + if (q == 0) + { + return; + } + + /* *INDENT-OFF* */ + REPLY_MACRO2(VL_API_SHOW_LISP_STATUS_REPLY, + ({ + rmp->gpe_status = vnet_lisp_gpe_enable_disable_status (); + rmp->feature_status = vnet_lisp_enable_disable_status (); + })); + /* *INDENT-ON* */ +} + +static void + vl_api_lisp_get_map_request_itr_rlocs_t_handler + (vl_api_lisp_get_map_request_itr_rlocs_t * mp) +{ + unix_shared_memory_queue_t *q = NULL; + vl_api_lisp_get_map_request_itr_rlocs_reply_t *rmp = NULL; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + locator_set_t *loc_set = 0; + u8 *tmp_str = 0; + int rv = 0; + + q = vl_api_client_index_to_input_queue (mp->client_index); + if (q == 0) + { + return; + } + + if (~0 == lcm->mreq_itr_rlocs) + { + tmp_str = format (0, " "); + } + else + { + loc_set = + pool_elt_at_index (lcm->locator_set_pool, lcm->mreq_itr_rlocs); + tmp_str = format (0, "%s", loc_set->name); + } + + /* *INDENT-OFF* */ + REPLY_MACRO2(VL_API_LISP_GET_MAP_REQUEST_ITR_RLOCS_REPLY, + ({ + strncpy((char *) rmp->locator_set_name, (char *) tmp_str, + ARRAY_LEN(rmp->locator_set_name) - 1); + })); + /* *INDENT-ON* */ + + vec_free (tmp_str); +} + +static void +vl_api_show_lisp_pitr_t_handler (vl_api_show_lisp_pitr_t * mp) +{ + unix_shared_memory_queue_t *q = NULL; + vl_api_show_lisp_pitr_reply_t *rmp = NULL; + lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); + mapping_t *m; + locator_set_t *ls = 0; + u8 *tmp_str = 0; + int rv = 0; + + q = vl_api_client_index_to_input_queue (mp->client_index); + if (q == 0) + { + return; + } + + if (!lcm->lisp_pitr) + { + tmp_str = format (0, "N/A"); + } + else + { + m = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index); + if (~0 != m->locator_set_index) + { + ls = + pool_elt_at_index (lcm->locator_set_pool, m->locator_set_index); + tmp_str = format (0, "%s", ls->name); + } + else + { + tmp_str = format (0, "N/A"); + } + } + vec_add1 (tmp_str, 0); + + /* *INDENT-OFF* */ + REPLY_MACRO2(VL_API_SHOW_LISP_PITR_REPLY, + ({ + rmp->status = lcm->lisp_pitr; + strncpy((char *) rmp->locator_set_name, (char *) tmp_str, + ARRAY_LEN(rmp->locator_set_name) - 1); + })); + /* *INDENT-ON* */ +} + +/* + * lisp_api_hookup + * Add vpe's API message handlers to the table. + * vlib has alread mapped shared memory and + * added the client registration handlers. + * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process() + */ +#define vl_msg_name_crc_list +#include <vnet/vnet_all_api_h.h> +#undef vl_msg_name_crc_list + +static void +setup_message_id_table (api_main_t * am) +{ +#define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id); + foreach_vl_msg_name_crc_lisp; +#undef _ +} + +static clib_error_t * +lisp_api_hookup (vlib_main_t * vm) +{ + api_main_t *am = &api_main; + +#define _(N,n) \ + vl_msg_api_set_handlers(VL_API_##N, #n, \ + vl_api_##n##_t_handler, \ + vl_noop_handler, \ + vl_api_##n##_t_endian, \ + vl_api_##n##_t_print, \ + sizeof(vl_api_##n##_t), 1); + foreach_vpe_api_msg; +#undef _ + + /* + * Set up the (msg_name, crc, message-id) table + */ + setup_message_id_table (am); + + return 0; +} + +VLIB_API_INIT_FUNCTION (lisp_api_hookup); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/lisp-cp/lisp_cp_dpo.c b/src/vnet/lisp-cp/lisp_cp_dpo.c new file mode 100644 index 00000000000..185b07a2c1b --- /dev/null +++ b/src/vnet/lisp-cp/lisp_cp_dpo.c @@ -0,0 +1,117 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <vnet/dpo/dpo.h> +#include <vnet/lisp-gpe/lisp_gpe.h> +#include <vnet/lisp-cp/control.h> + +/** + * The static array of LISP punt DPOs + */ +static dpo_id_t lisp_cp_dpos[DPO_PROTO_NUM]; + +const dpo_id_t * +lisp_cp_dpo_get (dpo_proto_t proto) +{ + /* + * there are only two instances of this DPO type. + * we can use the protocol as the index + */ + return (&lisp_cp_dpos[proto]); +} + +static u8 * +format_lisp_cp_dpo (u8 * s, va_list * args) +{ + index_t index = va_arg (*args, index_t); + CLIB_UNUSED (u32 indent) = va_arg (*args, u32); + + return (format (s, "lisp-cp-punt-%U", format_dpo_proto, index)); +} + +static void +lisp_cp_dpo_lock (dpo_id_t * dpo) +{ +} + +static void +lisp_cp_dpo_unlock (dpo_id_t * dpo) +{ +} + +const static dpo_vft_t lisp_cp_vft = { + .dv_lock = lisp_cp_dpo_lock, + .dv_unlock = lisp_cp_dpo_unlock, + .dv_format = format_lisp_cp_dpo, +}; + +/** + * @brief The per-protocol VLIB graph nodes that are assigned to a LISP-CP + * object. + * + * this means that these graph nodes are ones from which a LISP-CP is the + * parent object in the DPO-graph. + */ +const static char *const lisp_cp_ip4_nodes[] = { + "lisp-cp-lookup-ip4", + NULL, +}; + +const static char *const lisp_cp_ip6_nodes[] = { + "lisp-cp-lookup-ip6", + NULL, +}; + +const static char *const lisp_cp_ethernet_nodes[] = { + "lisp-cp-lookup-l2", + NULL, +}; + + +const static char *const *const lisp_cp_nodes[DPO_PROTO_NUM] = { + [DPO_PROTO_IP4] = lisp_cp_ip4_nodes, + [DPO_PROTO_IP6] = lisp_cp_ip6_nodes, + [DPO_PROTO_ETHERNET] = lisp_cp_ethernet_nodes, + [DPO_PROTO_MPLS] = NULL, +}; + +clib_error_t * +lisp_cp_dpo_module_init (vlib_main_t * vm) +{ + dpo_proto_t dproto; + + /* + * there are no exit arcs from the LIS-CP VLIB node, so we + * pass NULL as said node array. + */ + dpo_register (DPO_LISP_CP, &lisp_cp_vft, lisp_cp_nodes); + + FOR_EACH_DPO_PROTO (dproto) + { + dpo_set (&lisp_cp_dpos[dproto], DPO_LISP_CP, dproto, dproto); + } + + return (NULL); +} + +VLIB_INIT_FUNCTION (lisp_cp_dpo_module_init); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/lisp-cp/lisp_cp_dpo.h b/src/vnet/lisp-cp/lisp_cp_dpo.h new file mode 100644 index 00000000000..f0f3fae81a4 --- /dev/null +++ b/src/vnet/lisp-cp/lisp_cp_dpo.h @@ -0,0 +1,45 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef __LISP_CP_DPO_H__ +#define __LISP_CP_DPO_H__ + +#include <vnet/vnet.h> +#include <vnet/dpo/dpo.h> + +/** + * A representation of punt to the LISP control plane. + */ +typedef struct lisp_cp_dpo_t +{ + /** + * The transport payload type. + */ + dpo_proto_t lcd_proto; +} lisp_cp_dpo_t; + +extern const dpo_id_t *lisp_cp_dpo_get (dpo_proto_t proto); + +extern void lisp_cp_dpo_module_init (void); + +#endif + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/lisp-cp/lisp_cp_messages.h b/src/vnet/lisp-cp/lisp_cp_messages.h new file mode 100644 index 00000000000..278f60e1726 --- /dev/null +++ b/src/vnet/lisp-cp/lisp_cp_messages.h @@ -0,0 +1,613 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef VNET_LISP_GPE_LISP_CP_MESSAGES_H_ +#define VNET_LISP_GPE_LISP_CP_MESSAGES_H_ + +#include <vnet/vnet.h> + +#define MAX_IP_PKT_LEN 4096 +#define MAX_IP_HDR_LEN 40 /* without options or IPv6 hdr extensions */ +#define UDP_HDR_LEN 8 +#define LISP_DATA_HDR_LEN 8 +#define LISP_ECM_HDR_LEN 4 +#define MAX_LISP_MSG_ENCAP_LEN 2*(MAX_IP_HDR_LEN + UDP_HDR_LEN)+ LISP_ECM_HDR_LEN +#define MAX_LISP_PKT_ENCAP_LEN MAX_IP_HDR_LEN + UDP_HDR_LEN + LISP_DATA_HDR_LEN + +#define LISP_CONTROL_PORT 4342 + +/* + * EID RECORD FIELD + */ + +/* + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * / | Reserved | EID mask-len | EID-prefix-AFI | + * Rec +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * \ | EID-prefix ... | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + */ + + +typedef struct _eid_prefix_record_hdr +{ + u8 reserved; + u8 eid_prefix_length; +} __attribute__ ((__packed__)) eid_record_hdr_t; + +void eid_rec_hdr_init (eid_record_hdr_t * ptr); + +#define EID_REC_CAST(h_) ((eid_record_hdr_t *)(h_)) +#define EID_REC_MLEN(h_) EID_REC_CAST((h_))->eid_prefix_length +#define EID_REC_ADDR(h) (u8 *)(h) + sizeof(eid_record_hdr_t) + +/* LISP Types */ +typedef enum +{ + NOT_LISP_MSG, + LISP_MAP_REQUEST = 1, + LISP_MAP_REPLY, + LISP_MAP_REGISTER, + LISP_MAP_NOTIFY, + LISP_INFO_NAT = 7, + LISP_ENCAP_CONTROL_TYPE = 8, + LISP_MSG_TYPES +} lisp_msg_type_e; + +/* + * ENCAPSULATED CONTROL MESSAGE + */ + +/* + * 0 1 2 3 + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * / | IPv4 or IPv6 Header | + * OH | (uses RLOC addresses) | + * \ | | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * / | Source Port = xxxx | Dest Port = 4342 | + * UDP +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * \ | UDP Length | UDP Checksum | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * LH |Type=8 |S| Reserved | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * / | IPv4 or IPv6 Header | + * IH | (uses RLOC or EID addresses) | + * \ | | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * / | Source Port = xxxx | Dest Port = yyyy | + * UDP +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * \ | UDP Length | UDP Checksum | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * LCM | LISP Control Message | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + */ + + +/* + * Encapsulated control message header. This is followed by the IP + * header of the encapsulated LISP control message. + * + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * |Type=8 |S| Reserved | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + */ + +typedef struct +{ +#if CLIB_ARCH_IS_LITTLE_ENDIAN + u8 reserved:3; + u8 s_bit:1; + u8 type:4; +#else + u8 type:4; + u8 s_bit:1; + u8 reserved:3; +#endif + u8 reserved2[3]; +} ecm_hdr_t; + +char *ecm_hdr_to_char (ecm_hdr_t * h); + +#define ECM_TYPE(h_) ((ecm_hdr_t *)(h_))->type + +/* + * MAP-REQUEST MESSAGE + */ + +/* + * Map-Request Message Format + * + * 0 1 2 3 + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * |Type=1 |A|M|P|S|p|s| Reserved | IRC | Record Count | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Nonce . . . | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | . . . Nonce | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Source-EID-AFI | Source EID Address ... | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | ITR-RLOC-AFI 1 | ITR-RLOC Address 1 ... | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | ... | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | ITR-RLOC-AFI n | ITR-RLOC Address n ... | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * / | Reserved | EID mask-len | EID-prefix-AFI | + * Rec +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * \ | EID-prefix ... | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Map-Reply Record ... | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Mapping Protocol Data | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + */ + + +/* + * Fixed size portion of the map request. Variable size source EID + * address, originating ITR RLOC AFIs and addresses and then map + * request records follow. + */ +typedef struct +{ +#if CLIB_ARCH_IS_LITTLE_ENDIAN + u8 solicit_map_request:1; + u8 rloc_probe:1; + u8 map_data_present:1; + u8 authoritative:1; + u8 type:4; +#else + u8 type:4; + u8 authoritative:1; + u8 map_data_present:1; + u8 rloc_probe:1; + u8 solicit_map_request:1; +#endif +#if CLIB_ARCH_IS_LITTLE_ENDIAN + u8 reserved1:6; + u8 smr_invoked:1; + u8 pitr:1; +#else + u8 pitr:1; + u8 smr_invoked:1; + u8 reserved1:6; +#endif +#if CLIB_ARCH_IS_LITTLE_ENDIAN + u8 additional_itr_rloc_count:5; + u8 reserved2:3; +#else + u8 reserved2:3; + u8 additional_itr_rloc_count:5; +#endif + u8 record_count; + u64 nonce; +} __attribute__ ((__packed__)) map_request_hdr_t; + +void map_request_hdr_init (void *ptr); +char *map_request_hdr_to_char (map_request_hdr_t * h); + +#define MREQ_TYPE(h_) (h_)->type +#define MREQ_HDR_CAST(h_) ((map_request_hdr_t *)(h_)) +#define MREQ_REC_COUNT(h_) (MREQ_HDR_CAST(h_))->record_count +#define MREQ_RLOC_PROBE(h_) (MREQ_HDR_CAST(h_))->rloc_probe +#define MREQ_ITR_RLOC_COUNT(h_) (MREQ_HDR_CAST(h_))->additional_itr_rloc_count +#define MREQ_NONCE(h_) (MREQ_HDR_CAST(h_))->nonce +#define MREQ_SMR(h_) (MREQ_HDR_CAST(h_))->solicit_map_request +#define MREQ_SMR_INVOKED(h_) (MREQ_HDR_CAST(h_))->smr_invoked + +/* + * MAP-REPLY MESSAGE + */ + + /* + * Map-Reply Message Format + * + * 0 1 2 3 + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * |Type=2 |P|E|S| Reserved | Record Count | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Nonce . . . | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | . . . Nonce | + * +-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | | Record TTL | + * | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * R | Locator Count | EID mask-len | ACT |A| Reserved | + * e +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * c | Rsvd | Map-Version Number | EID-AFI | + * o +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * r | EID-prefix | + * d +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | /| Priority | Weight | M Priority | M Weight | + * | L +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | o | Unused Flags |L|p|R| Loc-AFI | + * | c +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | \| Locator | + * +-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Mapping Protocol Data | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + */ + + /* + * Fixed size portion of the map reply. + */ +typedef struct +{ +#if CLIB_ARCH_IS_LITTLE_ENDIAN + u8 reserved1:1; + u8 security:1; + u8 echo_nonce:1; + u8 rloc_probe:1; + u8 type:4; +#else + u8 type:4; + u8 rloc_probe:1; + u8 echo_nonce:1; + u8 security:1; + u8 reserved1:1; +#endif + u8 reserved2; + u8 reserved3; + u8 record_count; + u64 nonce; +} __attribute__ ((__packed__)) map_reply_hdr_t; + +void map_reply_hdr_init (void *ptr); +char *map_reply_hdr_to_char (map_reply_hdr_t * h); + +#define MREP_TYPE(h_) MREP_HDR_CAST(h_)->type +#define MREP_HDR_CAST(h_) ((map_reply_hdr_t *)(h_)) +#define MREP_REC_COUNT(h_) MREP_HDR_CAST(h_)->record_count +#define MREP_RLOC_PROBE(h_) MREP_HDR_CAST(h_)->rloc_probe +#define MREP_NONCE(h_) MREP_HDR_CAST(h_)->nonce + + +always_inline lisp_msg_type_e +lisp_msg_type (void *b) +{ + ecm_hdr_t *hdr = b; + if (!hdr) + { + return (NOT_LISP_MSG); + } + return (hdr->type); +} + +always_inline void +increment_record_count (void *b) +{ + switch (lisp_msg_type (b)) + { + case LISP_MAP_REQUEST: + MREQ_REC_COUNT (b) += 1; + break; + case LISP_MAP_REPLY: + MREP_REC_COUNT (b) += 1; + break; + default: + return; + } +} + + +/* + * LOCATOR FIELD + * + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * /| Priority | Weight | M Priority | M Weight | + * L +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * o | Unused Flags |L|p|R| Loc-AFI | + * c +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * \| Locator | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * + * Fixed portion of the mapping record locator. Variable length + * locator address follows. + */ +typedef struct _locator_hdr +{ + u8 priority; + u8 weight; + u8 mpriority; + u8 mweight; + u8 unused1; +#ifdef CLIB_ARCH_IS_LITTLE_ENDIAN + u8 reachable:1; + u8 probed:1; + u8 local:1; + u8 unused2:5; +#else + u8 unused2:5; + u8 local:1; + u8 probed:1; + u8 reachable:1; +#endif +} __attribute__ ((__packed__)) locator_hdr_t; + +#define LOC_CAST(h_) ((locator_hdr_t *)(h_)) +#define LOC_PROBED(h_) LOC_CAST(h_)->probed +#define LOC_PRIORITY(h_) LOC_CAST(h_)->priority +#define LOC_WEIGHT(h_) LOC_CAST(h_)->weight +#define LOC_MPRIORITY(h_) LOC_CAST(h_)->mpriority +#define LOC_MWEIGHT(h_) LOC_CAST(h_)->mweight +#define LOC_REACHABLE(h_) LOC_CAST(h_)->reachable +#define LOC_LOCAL(h_) LOC_CAST(h_)->local +#define LOC_ADDR(h_) ((u8 *)(h_) + sizeof(locator_hdr_t)) + +/* + * MAPPING RECORD + * + * Mapping record used in all LISP control messages. + * + * +---> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | | Record TTL | + * | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * R | Locator Count | EID mask-len | ACT |A| Reserved | + * e +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * c | Rsvd | Map-Version Number | EID-AFI | + * o +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * r | EID-prefix | + * d +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | /| Priority | Weight | M Priority | M Weight | + * | / +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Loc | Unused Flags |L|p|R| Loc-AFI | + * | \ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | \| Locator | + * +---> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + */ + +/* + * Fixed portion of the mapping record. EID prefix address and + * locators follow. + */ + +typedef struct _mapping_record_hdr_t +{ + u32 ttl; + u8 locator_count; + u8 eid_prefix_length; +#ifdef CLIB_ARCH_IS_LITTLE_ENDIAN + u8 reserved1:4; + u8 authoritative:1; + u8 action:3; +#else + u8 action:3; + u8 authoritative:1; + u8 reserved1:4; +#endif + u8 reserved2; +#ifdef CLIB_ARCH_IS_LITTLE_ENDIAN + u8 version_hi:4; + u8 reserved3:4; +#else + u8 reserved3:4; + u8 version_hi:4; +#endif + u8 version_low; +} __attribute__ ((__packed__)) mapping_record_hdr_t; + +void mapping_record_init_hdr (mapping_record_hdr_t * h); + +#define MAP_REC_EID_PLEN(h) ((mapping_record_hdr_t *)(h))->eid_prefix_length +#define MAP_REC_LOC_COUNT(h) ((mapping_record_hdr_t *)(h))->locator_count +#define MAP_REC_ACTION(h) ((mapping_record_hdr_t *)(h))->action +#define MAP_REC_AUTH(h) ((mapping_record_hdr_t *)(h))->authoritative +#define MAP_REC_TTL(h) ((mapping_record_hdr_t *)(h))->ttl +#define MAP_REC_EID(h) (u8 *)(h)+sizeof(mapping_record_hdr_t) +#define MAP_REC_VERSION(h) (h)->version_hi << 8 | (h)->version_low + +typedef enum +{ + LISP_NO_ACTION, + LISP_FORWARD_NATIVE, + LISP_SEND_MAP_REQUEST, + LISP_DROP +} lisp_action_e; + +typedef enum lisp_authoritative +{ + A_NO_AUTHORITATIVE = 0, + A_AUTHORITATIVE +} lisp_authoritative_e; + +/* + * LISP Canonical Address Format Encodings + * + * 0 1 2 3 + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | AFI = 16387 | Rsvd1 | Flags | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Type | Rsvd2 | Length | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + */ + +typedef struct _lcaf_hdr_t +{ + u8 reserved1; + u8 flags; + u8 type; + u8 reserved2; + u16 len; +} __attribute__ ((__packed__)) lcaf_hdr_t; + +#define LCAF_TYPE(h) ((lcaf_hdr_t *)(h))->type +#define LCAF_LENGTH(h) ((lcaf_hdr_t *)(h))->len +#define LCAF_RES2(h) ((lcaf_hdr_t *)(h))->reserved2 +#define LCAF_FLAGS(h) ((lcaf_hdr_t *)(h))->flags +#define LCAF_PAYLOAD(h) (u8 *)(h)+sizeof(lcaf_hdr_t) + +/* + * Source/Dest Key Canonical Address Format: + * + * 0 1 2 3 + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Reserved | Source-ML | Dest-ML | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + */ +typedef struct _lcaf_src_dst_hdr_t +{ + u16 reserved; + u8 src_mask_len; + u8 dst_mask_len; +} __attribute__ ((__packed__)) lcaf_src_dst_hdr_t; + +#define LCAF_SD_SRC_ML(_h) (_h)->src_mask_len +#define LCAF_SD_DST_ML(_h) (_h)->dst_mask_len + +/* + * The Map-Register message format is: + * + * 0 1 2 3 + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * |Type=3 |P| Reserved |M| Record Count | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Nonce . . . | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | . . . Nonce | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Key ID | Authentication Data Length | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * ~ Authentication Data ~ + * +-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | | Record TTL | + * | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * R | Locator Count | EID mask-len | ACT |A| Reserved | + * e +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * c | Rsvd | Map-Version Number | EID-Prefix-AFI | + * o +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * r | EID-Prefix | + * d +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | /| Priority | Weight | M Priority | M Weight | + * | L +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | o | Unused Flags |L|p|R| Loc-AFI | + * | c +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | \| Locator | + * +-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + */ +typedef struct +{ +#if CLIB_ARCH_IS_LITTLE_ENDIAN + u8 res1:3; + u8 proxy_map_reply:1; + u8 type:4; +#else + u8 type:4; + u8 proxy_map_reply:1; + u8 res1:3; +#endif + + u8 res2; + +#if CLIB_ARCH_IS_LITTLE_ENDIAN + u8 want_map_notify:1; + u8 res3:7; +#else + u8 res3:7; + u8 want_map_notify:1; +#endif + + u8 record_count; + u64 nonce; + u16 key_id; + u16 auth_data_len; + u8 data[0]; +} __attribute__ ((__packed__)) map_register_hdr_t; + +#define MREG_TYPE(h_) (h_)->type +#define MREG_HDR_CAST(h_) ((map_register_hdr_t *)(h_)) +#define MREG_PROXY_MR(h_) (MREG_HDR_CAST(h_))->proxy_map_reply +#define MREG_WANT_MAP_NOTIFY(h_) (MREG_HDR_CAST(h_))->want_map_notify +#define MREG_REC_COUNT(h_) (MREG_HDR_CAST(h_))->record_count +#define MREG_NONCE(h_) (MREG_HDR_CAST(h_))->nonce +#define MREG_KEY_ID(h_) (MREG_HDR_CAST(h_))->key_id +#define MREG_AUTH_DATA_LEN(h_) (MREG_HDR_CAST(h_))->auth_data_len +#define MREG_DATA(h_) (MREG_HDR_CAST(h_))->data + +/* + * The Map-Notify message format is: + * + * 0 1 2 3 + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * |Type=4 | Reserved | Record Count | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Nonce . . . | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | . . . Nonce | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Key ID | Authentication Data Length | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * ~ Authentication Data ~ + * +-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | | Record TTL | + * | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * R | Locator Count | EID mask-len | ACT |A| Reserved | + * e +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * c | Rsvd | Map-Version Number | EID-Prefix-AFI | + * o +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * r | EID-Prefix | + * d +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | /| Priority | Weight | M Priority | M Weight | + * | L +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | o | Unused Flags |L|p|R| Loc-AFI | + * | c +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | \| Locator | + * +-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +*/ + +typedef struct +{ +#if CLIB_ARCH_IS_LITTLE_ENDIAN + u8 res1:4; + u8 type:4; +#else + u8 type:4; + u8 res1:4; +#endif + + u16 res2; + + u8 record_count; + u64 nonce; + u16 key_id; + u16 auth_data_len; + u8 data[0]; +} __attribute__ ((__packed__)) map_notify_hdr_t; + +#define MNOTIFY_TYPE(h_) (h_)->type +#define MNOTIFY_HDR_CAST(h_) ((map_register_hdr_t *)(h_)) +#define MNOTIFY_REC_COUNT(h_) (MREG_HDR_CAST(h_))->record_count +#define MNOTIFY_NONCE(h_) (MREG_HDR_CAST(h_))->nonce +#define MNOTIFY_KEY_ID(h_) (MREG_HDR_CAST(h_))->key_id +#define MNOTIFY_AUTH_DATA_LEN(h_) (MREG_HDR_CAST(h_))->auth_data_len +#define MNOTIFY_DATA(h_) (MREG_HDR_CAST(h_))->data + +#endif /* VNET_LISP_GPE_LISP_CP_MESSAGES_H_ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/lisp-cp/lisp_msg_serdes.c b/src/vnet/lisp-cp/lisp_msg_serdes.c new file mode 100644 index 00000000000..eee1885cd9b --- /dev/null +++ b/src/vnet/lisp-cp/lisp_msg_serdes.c @@ -0,0 +1,372 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <vnet/lisp-cp/lisp_msg_serdes.h> +#include <vnet/lisp-cp/packets.h> +#include <vppinfra/time.h> + +void *lisp_msg_put_gid (vlib_buffer_t * b, gid_address_t * gid); + +static void +lisp_msg_put_locators (vlib_buffer_t * b, locator_t * locators) +{ + locator_t *loc; + + vec_foreach (loc, locators) + { + u8 *p = vlib_buffer_put_uninit (b, sizeof (locator_hdr_t)); + memset (p, 0, sizeof (locator_hdr_t)); + LOC_PRIORITY (p) = loc->priority; + LOC_MPRIORITY (p) = loc->mpriority; + LOC_WEIGHT (p) = loc->weight; + LOC_MWEIGHT (p) = loc->mweight; + LOC_LOCAL (p) = loc->local; + LOC_PROBED (p) = loc->probed ? 1 : 0; + lisp_msg_put_gid (b, &loc->address); + } +} + +static void +lisp_msg_put_mapping_record (vlib_buffer_t * b, mapping_t * record) +{ + mapping_record_hdr_t *p = + vlib_buffer_put_uninit (b, sizeof (mapping_record_hdr_t)); + gid_address_t *eid = &record->eid; + + memset (p, 0, sizeof (*p)); + MAP_REC_EID_PLEN (p) = gid_address_len (eid); + MAP_REC_TTL (p) = clib_host_to_net_u32 (MAP_REGISTER_DEFAULT_TTL); + MAP_REC_AUTH (p) = record->authoritative ? 1 : 0; + MAP_REC_LOC_COUNT (p) = vec_len (record->locators); + + lisp_msg_put_gid (b, eid); + lisp_msg_put_locators (b, record->locators); +} + +static void +lisp_msg_put_mreg_records (vlib_buffer_t * b, mapping_t * records) +{ + u32 i; + for (i = 0; i < vec_len (records); i++) + lisp_msg_put_mapping_record (b, &records[i]); +} + +void * +lisp_msg_put_gid (vlib_buffer_t * b, gid_address_t * gid) +{ + u8 *p = 0; + if (!gid) + { + /* insert only src-eid-afi field set to 0 */ + p = vlib_buffer_put_uninit (b, sizeof (u16)); + *(u16 *) p = 0; + } + else + { + p = vlib_buffer_put_uninit (b, gid_address_size_to_put (gid)); + gid_address_put (p, gid); + } + return p; +} + +static void * +lisp_msg_put_itr_rlocs (lisp_cp_main_t * lcm, vlib_buffer_t * b, + gid_address_t * rlocs, u8 * locs_put) +{ + u8 *bp, count = 0; + u32 i; + + bp = vlib_buffer_get_current (b); + for (i = 0; i < vec_len (rlocs); i++) + { + lisp_msg_put_gid (b, &rlocs[i]); + count++; + } + + *locs_put = count - 1; + return bp; +} + +void * +lisp_msg_put_eid_rec (vlib_buffer_t * b, gid_address_t * eid) +{ + eid_record_hdr_t *h = vlib_buffer_put_uninit (b, sizeof (*h)); + + memset (h, 0, sizeof (*h)); + EID_REC_MLEN (h) = gid_address_len (eid); + lisp_msg_put_gid (b, eid); + return h; +} + +u64 +nonce_build (u32 seed) +{ + u64 nonce; + u32 nonce_lower; + u32 nonce_upper; + struct timespec ts; + + /* Put nanosecond clock in lower 32-bits and put an XOR of the nanosecond + * clock with the seond clock in the upper 32-bits. */ + syscall (SYS_clock_gettime, CLOCK_REALTIME, &ts); + nonce_lower = ts.tv_nsec; + nonce_upper = ts.tv_sec ^ clib_host_to_net_u32 (nonce_lower); + + /* OR in a caller provided seed to the low-order 32-bits. */ + nonce_lower |= seed; + + /* Return 64-bit nonce. */ + nonce = nonce_upper; + nonce = (nonce << 32) | nonce_lower; + return nonce; +} + +void * +lisp_msg_put_map_reply (vlib_buffer_t * b, mapping_t * records, u64 nonce, + u8 probe_bit) +{ + map_reply_hdr_t *h = vlib_buffer_put_uninit (b, sizeof (h[0])); + + memset (h, 0, sizeof (h[0])); + MREP_TYPE (h) = LISP_MAP_REPLY; + MREP_NONCE (h) = nonce; + MREP_REC_COUNT (h) = 1; + MREP_RLOC_PROBE (h) = probe_bit; + + lisp_msg_put_mreg_records (b, records); + return h; +} + +void * +lisp_msg_put_map_register (vlib_buffer_t * b, mapping_t * records, + u8 want_map_notify, u16 auth_data_len, u64 * nonce, + u32 * msg_len) +{ + u8 *auth_data = 0; + + /* Basic header init */ + map_register_hdr_t *h = vlib_buffer_put_uninit (b, sizeof (h[0])); + + memset (h, 0, sizeof (h[0])); + MREG_TYPE (h) = LISP_MAP_REGISTER; + MREG_NONCE (h) = nonce_build (0); + MREG_WANT_MAP_NOTIFY (h) = want_map_notify ? 1 : 0; + MREG_REC_COUNT (h) = vec_len (records); + + auth_data = vlib_buffer_put_uninit (b, auth_data_len); + memset (auth_data, 0, auth_data_len); + + /* Put map register records */ + lisp_msg_put_mreg_records (b, records); + + nonce[0] = MREG_NONCE (h); + msg_len[0] = vlib_buffer_get_tail (b) - (u8 *) h; + return h; +} + +void * +lisp_msg_put_mreq (lisp_cp_main_t * lcm, vlib_buffer_t * b, + gid_address_t * seid, gid_address_t * deid, + gid_address_t * rlocs, u8 is_smr_invoked, + u8 rloc_probe_set, u64 * nonce) +{ + u8 loc_count = 0; + + /* Basic header init */ + map_request_hdr_t *h = vlib_buffer_put_uninit (b, sizeof (h[0])); + + memset (h, 0, sizeof (h[0])); + MREQ_TYPE (h) = LISP_MAP_REQUEST; + MREQ_NONCE (h) = nonce_build (0); + MREQ_SMR_INVOKED (h) = is_smr_invoked ? 1 : 0; + MREQ_RLOC_PROBE (h) = rloc_probe_set ? 1 : 0; + + /* We're adding one eid record */ + increment_record_count (h); + + /* Fill source eid */ + lisp_msg_put_gid (b, seid); + + /* Put itr rlocs */ + lisp_msg_put_itr_rlocs (lcm, b, rlocs, &loc_count); + MREQ_ITR_RLOC_COUNT (h) = loc_count; + + /* Put eid record */ + lisp_msg_put_eid_rec (b, deid); + + nonce[0] = MREQ_NONCE (h); + return h; +} + +void * +lisp_msg_push_ecm (vlib_main_t * vm, vlib_buffer_t * b, int lp, int rp, + gid_address_t * la, gid_address_t * ra) +{ + ecm_hdr_t *h; + ip_address_t _src_ip, *src_ip = &_src_ip, _dst_ip, *dst_ip = &_dst_ip; + if (gid_address_type (la) != GID_ADDR_IP_PREFIX) + { + /* empty ip4 */ + memset (src_ip, 0, sizeof (src_ip[0])); + memset (dst_ip, 0, sizeof (dst_ip[0])); + } + else + { + src_ip = &gid_address_ip (la); + dst_ip = &gid_address_ip (ra); + } + + /* Push inner ip and udp */ + pkt_push_udp_and_ip (vm, b, lp, rp, src_ip, dst_ip); + + /* Push lisp ecm hdr */ + h = pkt_push_ecm_hdr (b); + + return h; +} + +static u32 +msg_type_to_hdr_len (lisp_msg_type_e type) +{ + switch (type) + { + case LISP_MAP_REQUEST: + return (sizeof (map_request_hdr_t)); + case LISP_MAP_REPLY: + return (sizeof (map_reply_hdr_t)); + default: + return (0); + } +} + +void * +lisp_msg_pull_hdr (vlib_buffer_t * b, lisp_msg_type_e type) +{ + return vlib_buffer_pull (b, msg_type_to_hdr_len (type)); +} + +u32 +lisp_msg_parse_addr (vlib_buffer_t * b, gid_address_t * eid) +{ + u32 len; + memset (eid, 0, sizeof (*eid)); + len = gid_address_parse (vlib_buffer_get_current (b), eid); + if (len != ~0) + vlib_buffer_pull (b, len); + return len; +} + +u32 +lisp_msg_parse_eid_rec (vlib_buffer_t * b, gid_address_t * eid) +{ + eid_record_hdr_t *h = vlib_buffer_get_current (b); + u32 len; + memset (eid, 0, sizeof (*eid)); + len = gid_address_parse (EID_REC_ADDR (h), eid); + if (len == ~0) + return len; + + gid_address_ippref_len (eid) = EID_REC_MLEN (h); + vlib_buffer_pull (b, len + sizeof (eid_record_hdr_t)); + + return len + sizeof (eid_record_hdr_t); +} + +u32 +lisp_msg_parse_itr_rlocs (vlib_buffer_t * b, gid_address_t ** rlocs, + u8 rloc_count) +{ + gid_address_t tloc; + u32 i, len = 0, tlen = 0; + + //MREQ_ITR_RLOC_COUNT(mreq_hdr) + 1 + for (i = 0; i < rloc_count; i++) + { + len = lisp_msg_parse_addr (b, &tloc); + if (len == ~0) + return len; + vec_add1 (*rlocs, tloc); + tlen += len; + } + return tlen; +} + +u32 +lisp_msg_parse_loc (vlib_buffer_t * b, locator_t * loc) +{ + int len; + + len = locator_parse (vlib_buffer_get_current (b), loc); + if (len == ~0) + return ~0; + + vlib_buffer_pull (b, len); + + return len; +} + +u32 +lisp_msg_parse_mapping_record (vlib_buffer_t * b, gid_address_t * eid, + locator_t ** locs, locator_t * probed_) +{ + void *h = 0, *loc_hdr = 0; + locator_t loc, *probed = 0; + int i = 0, len = 0, llen = 0; + + h = vlib_buffer_get_current (b); + vlib_buffer_pull (b, sizeof (mapping_record_hdr_t)); + + memset (eid, 0, sizeof (*eid)); + len = gid_address_parse (vlib_buffer_get_current (b), eid); + if (len == ~0) + return len; + + vlib_buffer_pull (b, len); + if (GID_ADDR_IP_PREFIX == gid_address_type (eid)) + gid_address_ippref_len (eid) = MAP_REC_EID_PLEN (h); + + for (i = 0; i < MAP_REC_LOC_COUNT (h); i++) + { + loc_hdr = vlib_buffer_get_current (b); + + llen = lisp_msg_parse_loc (b, &loc); + if (llen == ~0) + return llen; + vec_add1 (*locs, loc); + len += llen; + + if (LOC_PROBED (loc_hdr)) + { + if (probed != 0) + clib_warning + ("Multiple locators probed! Probing only the first!"); + else + probed = &loc; + } + } + /* XXX */ + if (probed_ != 0 && probed) + *probed_ = *probed; + + return len + sizeof (map_reply_hdr_t); +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/lisp-cp/lisp_msg_serdes.h b/src/vnet/lisp-cp/lisp_msg_serdes.h new file mode 100644 index 00000000000..d794eff6340 --- /dev/null +++ b/src/vnet/lisp-cp/lisp_msg_serdes.h @@ -0,0 +1,58 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef VNET_LISP_GPE_LISP_MSG_BUILDER_H_ +#define VNET_LISP_GPE_LISP_MSG_BUILDER_H_ + +#include <vnet/vnet.h> +#include <vnet/lisp-cp/lisp_cp_messages.h> +#include <vnet/lisp-cp/control.h> + +void *lisp_msg_put_mreq (lisp_cp_main_t * lcm, vlib_buffer_t * b, + gid_address_t * seid, gid_address_t * deid, + gid_address_t * rlocs, u8 is_smr_invoked, + u8 rloc_probe_set, u64 * nonce); + +void *lisp_msg_put_map_register (vlib_buffer_t * b, mapping_t * records, + u8 want_map_notify, u16 auth_data_len, + u64 * nonce, u32 * msg_len); + +void *lisp_msg_push_ecm (vlib_main_t * vm, vlib_buffer_t * b, int lp, int rp, + gid_address_t * la, gid_address_t * ra); + +void *lisp_msg_put_map_reply (vlib_buffer_t * b, mapping_t * record, + u64 nonce, u8 probe_bit); + +u32 +lisp_msg_parse_mapping_record (vlib_buffer_t * b, gid_address_t * eid, + locator_t ** locs, locator_t * probed_); + +u32 lisp_msg_parse_addr (vlib_buffer_t * b, gid_address_t * eid); + +u32 lisp_msg_parse_eid_rec (vlib_buffer_t * b, gid_address_t * eid); + +u32 +lisp_msg_parse_itr_rlocs (vlib_buffer_t * b, gid_address_t ** rlocs, + u8 rloc_count); + +#endif /* VNET_LISP_GPE_LISP_MSG_BUILDER_H_ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/lisp-cp/lisp_types.c b/src/vnet/lisp-cp/lisp_types.c new file mode 100644 index 00000000000..5ab4a5eb449 --- /dev/null +++ b/src/vnet/lisp-cp/lisp_types.c @@ -0,0 +1,1574 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <vnet/lisp-cp/lisp_types.h> + +static u16 gid_address_put_no_vni (u8 * b, gid_address_t * gid); +static u16 gid_address_size_to_put_no_vni (gid_address_t * gid); +static u16 fid_addr_size_to_write (fid_address_t * a); + +u32 mac_parse (u8 * offset, u8 * a); + +typedef u16 (*size_to_write_fct) (void *); +typedef void *(*cast_fct) (gid_address_t *); +typedef u16 (*serdes_fct) (u8 *, void *); +typedef u8 (*addr_len_fct) (void *); +typedef void (*copy_fct) (void *, void *); +typedef void (*free_fct) (void *); +typedef int (*cmp_fct) (void *, void *); + +size_to_write_fct size_to_write_fcts[GID_ADDR_TYPES] = + { ip_prefix_size_to_write, lcaf_size_to_write, mac_size_to_write, + sd_size_to_write +}; +serdes_fct write_fcts[GID_ADDR_TYPES] = + { ip_prefix_write, lcaf_write, mac_write, sd_write }; +cast_fct cast_fcts[GID_ADDR_TYPES] = + { ip_prefix_cast, lcaf_cast, mac_cast, sd_cast }; +addr_len_fct addr_len_fcts[GID_ADDR_TYPES] = + { ip_prefix_length, lcaf_length, mac_length, sd_length }; +copy_fct copy_fcts[GID_ADDR_TYPES] = + { ip_prefix_copy, lcaf_copy, mac_copy, sd_copy }; + +#define foreach_lcaf_type \ + _(1, no_addr) \ + _(0, NULL) \ + _(1, vni) \ + _(0, NULL) \ + _(0, NULL) \ + _(0, NULL) \ + _(0, NULL) \ + _(0, NULL) \ + _(0, NULL) \ + _(0, NULL) \ + _(0, NULL) \ + _(0, NULL) \ + _(1, sd) + +#define _(cond, name) \ + u16 name ## _write (u8 * p, void * a); \ + u16 name ## _parse (u8 * p, void * a); \ + u16 name ## _size_to_write (void * a); \ + void name ## _free (void * a); \ + void name ## _copy (void * dst, void * src); \ + u8 name ## _length (void * a); \ + int name ## _cmp (void *, void *); +foreach_lcaf_type +#undef _ +#define CONCAT(a,b) a##_##b +#define IF(c, t, e) CONCAT(IF, c)(t, e) +#define IF_0(t, e) e +#define IF_1(t, e) t +#define EXPAND_FCN(cond, fcn) \ + IF(cond, fcn, NULL) + cmp_fct lcaf_cmp_fcts[LCAF_TYPES] = +{ +#define _(cond, name) \ + EXPAND_FCN(cond, name##_cmp), + foreach_lcaf_type +#undef _ +}; + +addr_len_fct lcaf_body_length_fcts[LCAF_TYPES] = { +#define _(cond, name) \ + EXPAND_FCN(cond, name##_length), + foreach_lcaf_type +#undef _ +}; + +copy_fct lcaf_copy_fcts[LCAF_TYPES] = { +#define _(cond, name) \ + EXPAND_FCN(cond, name##_copy), + foreach_lcaf_type +#undef _ +}; + +free_fct lcaf_free_fcts[LCAF_TYPES] = { +#define _(cond, name) \ + EXPAND_FCN(cond, name##_free), + foreach_lcaf_type +#undef _ +}; + +size_to_write_fct lcaf_size_to_write_fcts[LCAF_TYPES] = { +#define _(cond, name) \ + EXPAND_FCN(cond, name##_size_to_write), + foreach_lcaf_type +#undef _ +}; + +serdes_fct lcaf_write_fcts[LCAF_TYPES] = { +#define _(cond, name) \ + EXPAND_FCN(cond, name##_write), + foreach_lcaf_type +#undef _ +}; + +serdes_fct lcaf_parse_fcts[LCAF_TYPES] = { +#define _(cond, name) \ + EXPAND_FCN(cond, name##_parse), + foreach_lcaf_type +#undef _ +}; + +u8 * +format_ip_address (u8 * s, va_list * args) +{ + ip_address_t *a = va_arg (*args, ip_address_t *); + u8 ver = ip_addr_version (a); + if (ver == IP4) + { + return format (s, "%U", format_ip4_address, &ip_addr_v4 (a)); + } + else if (ver == IP6) + { + return format (s, "%U", format_ip6_address, &ip_addr_v6 (a)); + } + else + { + clib_warning ("Can't format IP version %d!", ver); + return 0; + } +} + +uword +unformat_ip_address (unformat_input_t * input, va_list * args) +{ + ip_address_t *a = va_arg (*args, ip_address_t *); + + memset (a, 0, sizeof (*a)); + if (unformat (input, "%U", unformat_ip4_address, &ip_addr_v4 (a))) + ip_addr_version (a) = IP4; + else if (unformat_user (input, unformat_ip6_address, &ip_addr_v6 (a))) + ip_addr_version (a) = IP6; + else + return 0; + return 1; +} + +u8 * +format_ip_prefix (u8 * s, va_list * args) +{ + ip_prefix_t *a = va_arg (*args, ip_prefix_t *); + return format (s, "%U/%d", format_ip_address, &ip_prefix_addr (a), + ip_prefix_len (a)); +} + +uword +unformat_ip_prefix (unformat_input_t * input, va_list * args) +{ + ip_prefix_t *a = va_arg (*args, ip_prefix_t *); + if (unformat (input, "%U/%d", unformat_ip_address, &ip_prefix_addr (a), + &ip_prefix_len (a))) + { + if ((ip_prefix_version (a) == IP4 && 32 < ip_prefix_len (a)) || + (ip_prefix_version (a) == IP6 && 128 < ip_prefix_length (a))) + { + clib_warning ("Prefix length to big: %d!", ip_prefix_len (a)); + return 0; + } + ip_prefix_normalize (a); + } + else + return 0; + return 1; +} + +uword +unformat_mac_address (unformat_input_t * input, va_list * args) +{ + u8 *a = va_arg (*args, u8 *); + return unformat (input, "%x:%x:%x:%x:%x:%x", &a[0], &a[1], &a[2], &a[3], + &a[4], &a[5]); +} + +u8 * +format_mac_address (u8 * s, va_list * args) +{ + u8 *a = va_arg (*args, u8 *); + return format (s, "%02x:%02x:%02x:%02x:%02x:%02x", + a[0], a[1], a[2], a[3], a[4], a[5]); +} + +u8 * +format_fid_address (u8 * s, va_list * args) +{ + fid_address_t *a = va_arg (*args, fid_address_t *); + + switch (fid_addr_type (a)) + { + case FID_ADDR_IP_PREF: + return format (s, "%U", format_ip_prefix, &fid_addr_ippref (a)); + + case FID_ADDR_MAC: + return format (s, "%U", format_mac_address, &fid_addr_mac (a)); + + default: + clib_warning ("Can't format fid address type %d!", fid_addr_type (a)); + return 0; + } + return 0; +} + +u8 * +format_gid_address (u8 * s, va_list * args) +{ + gid_address_t *a = va_arg (*args, gid_address_t *); + u8 type = gid_address_type (a); + switch (type) + { + case GID_ADDR_IP_PREFIX: + return format (s, "[%d] %U", gid_address_vni (a), format_ip_prefix, + &gid_address_ippref (a)); + case GID_ADDR_SRC_DST: + return format (s, "[%d] %U|%U", gid_address_vni (a), + format_fid_address, &gid_address_sd_src (a), + format_fid_address, &gid_address_sd_dst (a)); + case GID_ADDR_MAC: + return format (s, "[%d] %U", gid_address_vni (a), format_mac_address, + &gid_address_mac (a)); + default: + clib_warning ("Can't format gid type %d", type); + return 0; + } + return 0; +} + +uword +unformat_fid_address (unformat_input_t * i, va_list * args) +{ + fid_address_t *a = va_arg (*args, fid_address_t *); + ip_prefix_t ippref; + u8 mac[6] = { 0 }; + + if (unformat (i, "%U", unformat_ip_prefix, &ippref)) + { + fid_addr_type (a) = FID_ADDR_IP_PREF; + ip_prefix_copy (&fid_addr_ippref (a), &ippref); + } + else if (unformat (i, "%U", unformat_mac_address, mac)) + { + fid_addr_type (a) = FID_ADDR_MAC; + mac_copy (fid_addr_mac (a), mac); + } + else + return 0; + + return 1; +} + +uword +unformat_hmac_key_id (unformat_input_t * input, va_list * args) +{ + u32 *key_id = va_arg (*args, u32 *); + u8 *s = 0; + + if (unformat (input, "%s", &s)) + { + if (!strcmp ((char *) s, "sha1")) + key_id[0] = HMAC_SHA_1_96; + else if (!strcmp ((char *) s, "sha256")) + key_id[0] = HMAC_SHA_256_128; + else + { + clib_warning ("invalid key_id: '%s'", s); + key_id[0] = HMAC_NO_KEY; + } + } + else + return 0; + + vec_free (s); + return 1; +} + +uword +unformat_gid_address (unformat_input_t * input, va_list * args) +{ + gid_address_t *a = va_arg (*args, gid_address_t *); + u8 mac[6] = { 0 }; + ip_prefix_t ippref; + fid_address_t sim1, sim2; + + memset (&ippref, 0, sizeof (ippref)); + memset (&sim1, 0, sizeof (sim1)); + memset (&sim2, 0, sizeof (sim2)); + + if (unformat (input, "%U|%U", unformat_fid_address, &sim1, + unformat_fid_address, &sim2)) + { + gid_address_sd_src (a) = sim1; + gid_address_sd_dst (a) = sim2; + gid_address_type (a) = GID_ADDR_SRC_DST; + } + else if (unformat (input, "%U", unformat_ip_prefix, &ippref)) + { + ip_prefix_copy (&gid_address_ippref (a), &ippref); + gid_address_type (a) = GID_ADDR_IP_PREFIX; + } + else if (unformat (input, "%U", unformat_mac_address, mac)) + { + mac_copy (gid_address_mac (a), mac); + gid_address_type (a) = GID_ADDR_MAC; + } + else + return 0; + + return 1; +} + +uword +unformat_negative_mapping_action (unformat_input_t * input, va_list * args) +{ + u32 *action = va_arg (*args, u32 *); + u8 *s = 0; + + if (unformat (input, "%s", &s)) + { + if (!strcmp ((char *) s, "no-action")) + action[0] = LISP_NO_ACTION; + else if (!strcmp ((char *) s, "natively-forward")) + action[0] = LISP_FORWARD_NATIVE; + else if (!strcmp ((char *) s, "send-map-request")) + action[0] = LISP_SEND_MAP_REQUEST; + else if (!strcmp ((char *) s, "drop")) + action[0] = LISP_DROP; + else + { + clib_warning ("invalid action: '%s'", s); + action[0] = LISP_DROP; + } + } + else + return 0; + + vec_free (s); + return 1; +} + +u8 * +format_hmac_key_id (u8 * s, va_list * args) +{ + lisp_key_type_t key_id = va_arg (*args, lisp_key_type_t); + + switch (key_id) + { + case HMAC_SHA_1_96: + return format (0, "sha1"); + case HMAC_SHA_256_128: + return format (0, "sha256"); + default: + return 0; + } + + return 0; +} + +u8 * +format_negative_mapping_action (u8 * s, va_list * args) +{ + lisp_action_e action = va_arg (*args, lisp_action_e); + + switch (action) + { + case LISP_NO_ACTION: + s = format (s, "no-action"); + break; + case LISP_FORWARD_NATIVE: + s = format (s, "natively-forward"); + break; + case LISP_SEND_MAP_REQUEST: + s = format (s, "send-map-request"); + break; + case LISP_DROP: + default: + s = format (s, "drop"); + break; + } + return (s); +} + +u16 +ip_address_size (const ip_address_t * a) +{ + switch (ip_addr_version (a)) + { + case IP4: + return sizeof (ip4_address_t); + break; + case IP6: + return sizeof (ip6_address_t); + break; + } + return 0; +} + +u16 +ip_version_to_size (u8 ver) +{ + switch (ver) + { + case IP4: + return sizeof (ip4_address_t); + break; + case IP6: + return sizeof (ip6_address_t); + break; + } + return 0; +} + +u8 +ip_version_to_max_plen (u8 ver) +{ + switch (ver) + { + case IP4: + return 32; + break; + case IP6: + return 128; + break; + } + return 0; +} + +always_inline lisp_afi_e +ip_version_to_iana_afi (u16 version) +{ + switch (version) + { + case IP4: + return LISP_AFI_IP; + case IP6: + return LISP_AFI_IP6; + default: + return 0; + } + return 0; +} + +always_inline u8 +ip_iana_afi_to_version (lisp_afi_e afi) +{ + switch (afi) + { + case LISP_AFI_IP: + return IP4; + case LISP_AFI_IP6: + return IP6; + default: + return 0; + } + return 0; +} + +u16 +ip_address_size_to_write (ip_address_t * a) +{ + return ip_address_size (a) + sizeof (u16); +} + +u16 +ip_address_iana_afi (ip_address_t * a) +{ + return ip_version_to_iana_afi (ip_addr_version (a)); +} + +u8 +ip_address_max_len (u8 version) +{ + return version == IP4 ? 32 : 128; +} + +u16 +ip4_address_size_to_put () +{ + // return sizeof(u16) + sizeof (ip4_address_t); + return 6; +} + +u16 +ip6_address_size_to_put () +{ + //return sizeof(u16) + sizeof (ip6_address_t); + return 18; +} + +u32 +ip4_address_put (u8 * b, ip4_address_t * a) +{ + *(u16 *) b = clib_host_to_net_u16 (ip_version_to_iana_afi (IP4)); + u8 *p = b + sizeof (u16); + clib_memcpy (p, a, sizeof (*a)); + return ip4_address_size_to_put (); +} + +u32 +ip6_address_put (u8 * b, ip6_address_t * a) +{ + *(u16 *) b = clib_host_to_net_u16 (ip_version_to_iana_afi (IP6)); + u8 *p = b + sizeof (u16); + clib_memcpy (p, a, sizeof (*a)); + return ip6_address_size_to_put (); +} + +u32 +ip_address_put (u8 * b, ip_address_t * a) +{ + u32 len = ip_address_size (a); + *(u16 *) b = clib_host_to_net_u16 (ip_address_iana_afi (a)); + u8 *p = b + sizeof (u16); + clib_memcpy (p, &ip_addr_addr (a), len); + return (len + sizeof (u16)); +} + +u32 +ip_address_parse (void *offset, u16 iana_afi, ip_address_t * dst) +{ + ip_addr_version (dst) = ip_iana_afi_to_version (iana_afi); + u8 size = ip_version_to_size (ip_addr_version (dst)); + clib_memcpy (&ip_addr_addr (dst), offset + sizeof (u16), size); + return (sizeof (u16) + size); +} + +u32 +lcaf_hdr_parse (void *offset, lcaf_t * lcaf) +{ + lcaf_hdr_t *lh = offset; + lcaf->type = lh->type; + + /* this is a bit of hack: since the LCAF Instance ID is the + only message that uses reserved2 field, we can set it here. + If any LCAF format starts using reserved2 field as well this needs + to be moved elsewhere */ + lcaf_vni_len (lcaf) = lh->reserved2; + + return sizeof (lh[0]); +} + +static u8 +iana_afi_to_fid_addr_type (u16 type) +{ + switch (type) + { + case LISP_AFI_IP: + case LISP_AFI_IP6: + return FID_ADDR_IP_PREF; + + case LISP_AFI_MAC: + return FID_ADDR_MAC; + } + return ~0; +} + +static u16 +fid_addr_parse (u8 * p, fid_address_t * a) +{ + u16 afi = clib_net_to_host_u16 (*(u16 *) p); + fid_addr_type (a) = iana_afi_to_fid_addr_type (afi); + ip_address_t *ip_addr = &ip_prefix_addr (&fid_addr_ippref (a)); + + switch (fid_addr_type (a)) + { + case FID_ADDR_MAC: + return mac_parse (p, fid_addr_mac (a)); + + case FID_ADDR_IP_PREF: + return ip_address_parse (p, afi, ip_addr); + } + return ~0; +} + +u16 +sd_parse (u8 * p, void *a) +{ + lcaf_src_dst_hdr_t *sd_hdr; + gid_address_t *g = a; + u16 size = 0; + fid_address_t *src = &gid_address_sd_src (g); + fid_address_t *dst = &gid_address_sd_dst (g); + + gid_address_type (g) = GID_ADDR_SRC_DST; + + sd_hdr = (lcaf_src_dst_hdr_t *) (p + size); + size += sizeof (sd_hdr[0]); + + size += fid_addr_parse (p + size, src); + size += fid_addr_parse (p + size, dst); + + if (fid_addr_type (src) == FID_ADDR_IP_PREF) + { + ip_prefix_t *ippref = &fid_addr_ippref (src); + ip_prefix_len (ippref) = LCAF_SD_SRC_ML (sd_hdr); + } + if (fid_addr_type (dst) == FID_ADDR_IP_PREF) + { + ip_prefix_t *ippref = &fid_addr_ippref (dst); + ip_prefix_len (ippref) = LCAF_SD_DST_ML (sd_hdr); + } + return size; +} + +u16 +try_parse_src_dst_lcaf (u8 * p, gid_address_t * a) +{ + lcaf_t lcaf; + u16 size = sizeof (u16); /* skip AFI */ + + size += lcaf_hdr_parse (p + size, &lcaf); + + if (LCAF_SOURCE_DEST != lcaf_type (&lcaf)) + return ~0; + + size += sd_parse (p + size, a); + return size; +} + +u16 +vni_parse (u8 * p, void *a) +{ + lcaf_t *lcaf = a; + gid_address_t *g = a; + u16 size = 0; + + gid_address_vni (g) = clib_net_to_host_u32 (*(u32 *) p); + size += sizeof (u32); + gid_address_vni_mask (g) = lcaf_vni_len (lcaf); + + /* nested LCAFs are not supported except of src/dst with vni - to handle + * such case look at the next AFI and process src/dest LCAF separately */ + u16 afi = clib_net_to_host_u16 (*((u16 *) (p + size))); + if (LISP_AFI_LCAF == afi) + { + u16 len = try_parse_src_dst_lcaf (p + size, g); + if ((u16) ~ 0 == len) + return ~0; + size += len; + } + else + size += gid_address_parse (p + size, g); + + return size; +} + +u16 +no_addr_parse (u8 * p, void *a) +{ + /* do nothing */ + return 0; +} + +u32 +lcaf_parse (void *offset, gid_address_t * addr) +{ + /* skip AFI type */ + offset += sizeof (u16); + lcaf_t *lcaf = &gid_address_lcaf (addr); + + u32 size = lcaf_hdr_parse (offset, lcaf); + u8 type = lcaf_type (lcaf); + + if (!lcaf_parse_fcts[type]) + { + clib_warning ("Unsupported LCAF type: %u", type); + return ~0; + } + size += (*lcaf_parse_fcts[type]) (offset + size, lcaf); + return sizeof (u16) + size; +} + +void +vni_free (void *a) +{ + vni_t *v = a; + gid_address_free (vni_gid (v)); + clib_mem_free (vni_gid (v)); +} + +void +no_addr_free (void *a) +{ + /* nothing to do */ +} + +void +sd_free (void *a) +{ + /* nothing */ +} + +void +gid_address_free (gid_address_t * a) +{ + if (gid_address_type (a) != GID_ADDR_LCAF) + return; + + lcaf_t *lcaf = &gid_address_lcaf (a); + u8 lcaf_type = lcaf_type (lcaf); + (*lcaf_free_fcts[lcaf_type]) (lcaf); +} + +void +gid_address_from_ip (gid_address_t * g, ip_address_t * ip) +{ + memset (g, 0, sizeof (g[0])); + ip_address_set (&gid_address_ip (g), ip, ip_addr_version (ip)); + gid_address_ippref_len (g) = 32; +} + +int +ip_address_cmp (const ip_address_t * ip1, const ip_address_t * ip2) +{ + int res = 0; + if (ip_addr_version (ip1) != ip_addr_version (ip2)) + return -1; + res = + memcmp (&ip_addr_addr (ip1), &ip_addr_addr (ip2), ip_address_size (ip1)); + + if (res < 0) + res = 2; + else if (res > 0) + res = 1; + + return res; +} + +void +ip_address_copy (ip_address_t * dst, const ip_address_t * src) +{ + if (IP4 == ip_addr_version (src)) + { + /* don't copy any garbe from the union */ + memset (dst, 0, sizeof (*dst)); + dst->ip.v4 = src->ip.v4; + dst->version = IP4; + } + else + { + clib_memcpy (dst, src, sizeof (ip_address_t)); + } +} + +void +ip_address_copy_addr (void *dst, const ip_address_t * src) +{ + clib_memcpy (dst, src, ip_address_size (src)); +} + +void +ip_address_set (ip_address_t * dst, const void *src, u8 version) +{ + clib_memcpy (dst, src, ip_version_to_size (version)); + ip_addr_version (dst) = version; +} + +void +ip_address_to_46 (const ip_address_t * addr, + ip46_address_t * a, fib_protocol_t * proto) +{ + *proto = (IP4 == ip_addr_version (addr) ? + FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6); + switch (*proto) + { + case FIB_PROTOCOL_IP4: + ip46_address_set_ip4 (a, &addr->ip.v4); + break; + case FIB_PROTOCOL_IP6: + a->ip6 = addr->ip.v6; + break; + default: + ASSERT (0); + break; + } +} + +static void +ip_prefix_normalize_ip4 (ip4_address_t * ip4, u8 preflen) +{ + u32 mask = ~0; + + ASSERT (ip4); + + if (32 <= preflen) + { + return; + } + + mask = pow2_mask (preflen) << (32 - preflen); + mask = clib_host_to_net_u32 (mask); + ip4->data_u32 &= mask; +} + +static void +ip_prefix_normalize_ip6 (ip6_address_t * ip6, u8 preflen) +{ + u8 mask_6[16]; + u32 *m; + u8 j, i0, i1; + + ASSERT (ip6); + + memset (mask_6, 0, sizeof (mask_6)); + + if (128 <= preflen) + { + return; + } + + i1 = preflen % 32; + i0 = preflen / 32; + m = (u32 *) & mask_6[0]; + + for (j = 0; j < i0; j++) + { + m[j] = ~0; + } + + if (i1) + { + m[i0] = clib_host_to_net_u32 (pow2_mask (i1) << (32 - i1)); + } + + for (j = 0; j < sizeof (mask_6); j++) + { + ip6->as_u8[j] &= mask_6[j]; + } +} + +void +ip_prefix_normalize (ip_prefix_t * a) +{ + u8 preflen = ip_prefix_len (a); + + switch (ip_prefix_version (a)) + { + case IP4: + ip_prefix_normalize_ip4 (&ip_prefix_v4 (a), preflen); + break; + + case IP6: + ip_prefix_normalize_ip6 (&ip_prefix_v6 (a), preflen); + break; + + default: + ASSERT (0); + } +} + +void * +ip_prefix_cast (gid_address_t * a) +{ + return &gid_address_ippref (a); +} + +u16 +ip_prefix_size_to_write (void *pref) +{ + ip_prefix_t *a = (ip_prefix_t *) pref; + return ip_address_size_to_write (&ip_prefix_addr (a)); +} + +u16 +ip_prefix_write (u8 * p, void *gid) +{ + gid_address_t *g = gid; + ip_prefix_t *a = &gid_address_ippref (g); + + switch (ip_prefix_version (a)) + { + case IP4: + return ip4_address_put (p, &ip_prefix_v4 (a)); + break; + case IP6: + return ip6_address_put (p, &ip_prefix_v6 (a)); + break; + } + return 0; +} + +u8 +ip_prefix_length (void *a) +{ + return ip_prefix_len ((ip_prefix_t *) a); +} + +void +ip_prefix_copy (void *dst, void *src) +{ + clib_memcpy (dst, src, sizeof (ip_prefix_t)); +} + +void +mac_copy (void *dst, void *src) +{ + clib_memcpy (dst, src, 6); +} + +void +sd_copy (void *dst, void *src) +{ + clib_memcpy (dst, src, sizeof (source_dest_t)); +} + +int +ip_prefix_cmp (ip_prefix_t * p1, ip_prefix_t * p2) +{ + int cmp = 0; + + ip_prefix_normalize (p1); + ip_prefix_normalize (p2); + + cmp = ip_address_cmp (&ip_prefix_addr (p1), &ip_prefix_addr (p2)); + if (cmp == 0) + { + if (ip_prefix_len (p1) < ip_prefix_len (p2)) + { + cmp = 1; + } + else + { + if (ip_prefix_len (p1) > ip_prefix_len (p2)) + cmp = 2; + } + } + return cmp; +} + +void +no_addr_copy (void *dst, void *src) +{ + /* nothing to do */ +} + +void +vni_copy (void *dst, void *src) +{ + vni_t *vd = dst; + vni_t *vs = src; + + clib_memcpy (vd, vs, sizeof (vd[0])); + vni_gid (vd) = clib_mem_alloc (sizeof (gid_address_t)); + gid_address_copy (vni_gid (vd), vni_gid (vs)); +} + +void +lcaf_copy (void *dst, void *src) +{ + lcaf_t *lcaf_dst = dst; + lcaf_t *lcaf_src = src; + + lcaf_type (lcaf_dst) = lcaf_type (lcaf_src); + (*lcaf_copy_fcts[lcaf_type (lcaf_src)]) (dst, src); +} + +u8 +lcaf_length (void *a) +{ + return 0; +} + +u8 +mac_length (void *a) +{ + return 0; +} + +u8 +sd_length (void *a) +{ + return 0; +} + +void * +lcaf_cast (gid_address_t * a) +{ + return &gid_address_lcaf (a); +} + +void * +mac_cast (gid_address_t * a) +{ + return &gid_address_mac (a); +} + +void * +sd_cast (gid_address_t * a) +{ + return &gid_address_sd (a); +} + +u8 +no_addr_length (void *a) +{ + return 0; +} + +u8 +vni_length (void *a) +{ + vni_t *v = a; + return (sizeof (u32) /* VNI size */ + + gid_address_size_to_put (vni_gid (v)) /* vni body size */ ); +} + +u16 +lcaf_write (u8 * p, void *a) +{ + u16 size = 0, len; + lcaf_t *lcaf = a; + u8 type = lcaf_type (lcaf); + lcaf_hdr_t _h, *h = &_h; + + *(u16 *) p = clib_host_to_net_u16 (LISP_AFI_LCAF); + size += sizeof (u16); + memset (h, 0, sizeof (h[0])); + LCAF_TYPE (h) = type; + u16 lcaf_len = (*lcaf_body_length_fcts[type]) (lcaf); + LCAF_LENGTH (h) = clib_host_to_net_u16 (lcaf_len); + + clib_memcpy (p + size, h, sizeof (h[0])); + size += sizeof (h[0]); + len = (*lcaf_write_fcts[type]) (p + size, lcaf); + + if ((u16) ~ 0 == len) + return ~0; + + return size + len; +} + +u16 +mac_write (u8 * p, void *a) +{ + *(u16 *) p = clib_host_to_net_u16 (LISP_AFI_MAC); + clib_memcpy (p + sizeof (u16), a, 6); + return mac_size_to_write (a); +} + +static u16 +fid_addr_write (u8 * p, fid_address_t * a) +{ + switch (fid_addr_type (a)) + { + case FID_ADDR_IP_PREF: + return ip_prefix_write (p, &fid_addr_ippref (a)); + + case FID_ADDR_MAC: + return mac_write (p, &fid_addr_mac (a)); + + default: + return ~0; + } + return ~0; +} + +static u8 +fid_address_length (fid_address_t * a) +{ + switch (fid_addr_type (a)) + { + case FID_ADDR_IP_PREF: + return ip_prefix_length (&fid_addr_ippref (a)); + case FID_ADDR_MAC: + return 0; + } + return 0; +} + +u16 +sd_write (u8 * p, void *a) +{ + source_dest_t *sd = a; + u16 size = 0; + lcaf_hdr_t _h, *h = &_h; + lcaf_src_dst_hdr_t sd_hdr; + + *(u16 *) p = clib_host_to_net_u16 (LISP_AFI_LCAF); + size += sizeof (u16); + memset (h, 0, sizeof (h[0])); + LCAF_TYPE (h) = LCAF_SOURCE_DEST; + u16 lcaf_len = sizeof (lcaf_src_dst_hdr_t) + + fid_addr_size_to_write (&sd_src (sd)) + + fid_addr_size_to_write (&sd_dst (sd)); + LCAF_LENGTH (h) = clib_host_to_net_u16 (lcaf_len); + + clib_memcpy (p + size, h, sizeof (h[0])); + size += sizeof (h[0]); + + memset (&sd_hdr, 0, sizeof (sd_hdr)); + LCAF_SD_SRC_ML (&sd_hdr) = fid_address_length (&sd_src (sd)); + LCAF_SD_DST_ML (&sd_hdr) = fid_address_length (&sd_dst (sd)); + clib_memcpy (p + size, &sd_hdr, sizeof (sd_hdr)); + size += sizeof (sd_hdr); + + u16 len = fid_addr_write (p + size, &sd_src (sd)); + if ((u16) ~ 0 == len) + return ~0; + size += len; + + len = fid_addr_write (p + size, &sd_dst (sd)); + if ((u16) ~ 0 == len) + return ~0; + size += len; + + return size; +} + +u16 +vni_write (u8 * p, void *a) +{ + lcaf_hdr_t _h, *h = &_h; + gid_address_t *g = a; + u16 size = 0, len; + + /* put lcaf header */ + *(u16 *) p = clib_host_to_net_u16 (LISP_AFI_LCAF); + size += sizeof (u16); + memset (h, 0, sizeof (h[0])); + LCAF_TYPE (h) = LCAF_INSTANCE_ID; + u16 lcaf_len = sizeof (u32) /* Instance ID size */ + + gid_address_size_to_put_no_vni (g); + LCAF_LENGTH (h) = clib_host_to_net_u16 (lcaf_len); + LCAF_RES2 (h) = gid_address_vni_mask (g); + + /* put vni header */ + clib_memcpy (p + size, h, sizeof (h[0])); + size += sizeof (h[0]); + + u32 *afip = (u32 *) (p + size); + afip[0] = clib_host_to_net_u32 (gid_address_vni (g)); + size += sizeof (u32); + + if (GID_ADDR_SRC_DST == gid_address_type (g)) + /* write src/dst LCAF */ + { + len = sd_write (p + size, g); + if ((u16) ~ 0 == len) + return ~0; + } + else + /* write the actual address */ + len = gid_address_put_no_vni (p + size, g); + + if ((u16) ~ 0 == len) + return ~0; + + return size + len; +} + +u16 +no_addr_write (u8 * p, void *a) +{ + /* do nothing; return AFI field size */ + return sizeof (u16); +} + +u16 +no_addr_size_to_write (void *a) +{ + return sizeof (u16); /* AFI field length */ +} + +static u16 +fid_addr_size_to_write (fid_address_t * a) +{ + switch (fid_addr_type (a)) + { + case FID_ADDR_IP_PREF: + return ip_prefix_size_to_write (a); + + case FID_ADDR_MAC: + return mac_size_to_write (a); + + default: + break; + } + return 0; +} + +u16 +vni_size_to_write (void *a) +{ + gid_address_t *g = a; + + u16 lcaf_size = sizeof (u32) + sizeof (u16) /* LCAF AFI field size */ + + sizeof (lcaf_hdr_t); + + if (gid_address_type (g) == GID_ADDR_SRC_DST) + /* special case where nested LCAF is supported */ + return lcaf_size + sd_size_to_write (g); + else + return lcaf_size + gid_address_size_to_put_no_vni (g); +} + +u16 +lcaf_size_to_write (void *a) +{ + lcaf_t *lcaf = (lcaf_t *) a; + u32 size = 0, len; + u8 type = lcaf_type (lcaf); + + size += sizeof (u16); /* AFI size */ + + len = (*lcaf_size_to_write_fcts[type]) (lcaf); + if (~0 == len) + return ~0; + + return size + len; +} + +u16 +sd_size_to_write (void *a) +{ + source_dest_t *sd = a; + return sizeof (u16) + + sizeof (lcaf_hdr_t) + + sizeof (lcaf_src_dst_hdr_t) + + fid_addr_size_to_write (&sd_src (sd)) + + fid_addr_size_to_write (&sd_dst (sd)); +} + +u16 +mac_size_to_write (void *a) +{ + return sizeof (u16) + 6; +} + +u8 +gid_address_len (gid_address_t * a) +{ + gid_address_type_t type = gid_address_type (a); + return (*addr_len_fcts[type]) ((*cast_fcts[type]) (a)); +} + +static u16 +gid_address_put_no_vni (u8 * b, gid_address_t * gid) +{ + gid_address_type_t type = gid_address_type (gid); + return (*write_fcts[type]) (b, (*cast_fcts[type]) (gid)); +} + +u16 +gid_address_put (u8 * b, gid_address_t * gid) +{ + if (0 != gid_address_vni (gid)) + return vni_write (b, gid); + + return gid_address_put_no_vni (b, gid); +} + +static u16 +gid_address_size_to_put_no_vni (gid_address_t * gid) +{ + gid_address_type_t type = gid_address_type (gid); + return (*size_to_write_fcts[type]) ((*cast_fcts[type]) (gid)); +} + +u16 +gid_address_size_to_put (gid_address_t * gid) +{ + if (0 != gid_address_vni (gid)) + return vni_size_to_write (gid); + + return gid_address_size_to_put_no_vni (gid); +} + +void * +gid_address_cast (gid_address_t * gid, gid_address_type_t type) +{ + return (*cast_fcts[type]) (gid); +} + +void +gid_address_copy (gid_address_t * dst, gid_address_t * src) +{ + gid_address_type_t type = gid_address_type (src); + (*copy_fcts[type]) ((*cast_fcts[type]) (dst), (*cast_fcts[type]) (src)); + gid_address_type (dst) = type; + gid_address_vni (dst) = gid_address_vni (src); + gid_address_vni_mask (dst) = gid_address_vni_mask (src); +} + +u32 +mac_parse (u8 * offset, u8 * a) +{ + /* skip AFI field */ + offset += sizeof (u16); + + clib_memcpy (a, offset, 6); + return sizeof (u16) + 6; +} + +u32 +gid_address_parse (u8 * offset, gid_address_t * a) +{ + lisp_afi_e afi; + int len = 0; + + if (!a) + return 0; + + /* NOTE: since gid_address_parse may be called by vni_parse, we can't 0 + * the gid address here */ + afi = clib_net_to_host_u16 (*((u16 *) offset)); + + switch (afi) + { + case LISP_AFI_NO_ADDR: + len = sizeof (u16); + gid_address_type (a) = GID_ADDR_NO_ADDRESS; + break; + case LISP_AFI_IP: + len = ip_address_parse (offset, afi, &gid_address_ip (a)); + gid_address_type (a) = GID_ADDR_IP_PREFIX; + /* this should be modified outside if needed */ + gid_address_ippref_len (a) = 32; + break; + case LISP_AFI_IP6: + len = ip_address_parse (offset, afi, &gid_address_ip (a)); + gid_address_type (a) = GID_ADDR_IP_PREFIX; + /* this should be modified outside if needed */ + gid_address_ippref_len (a) = 128; + break; + case LISP_AFI_LCAF: + gid_address_type (a) = GID_ADDR_LCAF; + len = lcaf_parse (offset, a); + break; + case LISP_AFI_MAC: + len = mac_parse (offset, gid_address_mac (a)); + gid_address_type (a) = GID_ADDR_MAC; + break; + default: + clib_warning ("LISP AFI %d not supported!", afi); + return ~0; + } + return len; +} + +void +gid_address_ip_set (gid_address_t * dst, void *src, u8 version) +{ + gid_address_ippref_len (dst) = ip_address_max_len (version); + ip_address_set (&gid_address_ip (dst), src, version); +} + +int +no_addr_cmp (void *a1, void *a2) +{ + return 0; +} + +int +vni_cmp (void *a1, void *a2) +{ + vni_t *v1 = a1; + vni_t *v2 = a2; + + if (vni_mask_len (v1) != vni_mask_len (v2)) + return -1; + if (vni_vni (v1) != vni_vni (v2)) + return -1; + return gid_address_cmp (vni_gid (v1), vni_gid (v2)); +} + +static int +mac_cmp (void *a1, void *a2) +{ + return memcmp (a1, a2, 6); +} + +static int +fid_addr_cmp (fid_address_t * a1, fid_address_t * a2) +{ + if (fid_addr_type (a1) != fid_addr_type (a2)) + return -1; + + switch (fid_addr_type (a1)) + { + case FID_ADDR_IP_PREF: + return ip_prefix_cmp (&fid_addr_ippref (a1), &fid_addr_ippref (a2)); + + case FID_ADDR_MAC: + return mac_cmp (fid_addr_mac (a1), fid_addr_mac (a2)); + + default: + return -1; + } + return -1; +} + +int +sd_cmp (void *a1, void *a2) +{ + source_dest_t *sd1 = a1; + source_dest_t *sd2 = a2; + + if (fid_addr_cmp (&sd_dst (sd1), &sd_dst (sd2))) + return -1; + if (fid_addr_cmp (&sd_src (sd1), &sd_src (sd2))) + return -1; + return 0; +} + +/* Compare two gid_address_t. + * Returns: + * -1: If they are from different afi + * 0: Both address are the same + * 1: Addr1 is bigger than addr2 + * 2: Addr2 is bigger than addr1 + */ +int +gid_address_cmp (gid_address_t * a1, gid_address_t * a2) +{ + lcaf_t *lcaf1, *lcaf2; + int cmp = -1; + if (!a1 || !a2) + return -1; + if (gid_address_type (a1) != gid_address_type (a2)) + return -1; + if (gid_address_vni (a1) != gid_address_vni (a2)) + return -1; + if (gid_address_vni_mask (a1) != gid_address_vni_mask (a2)) + return -1; + + switch (gid_address_type (a1)) + { + case GID_ADDR_NO_ADDRESS: + if (a1 == a2) + cmp = 0; + else + cmp = 2; + break; + case GID_ADDR_IP_PREFIX: + cmp = + ip_prefix_cmp (&gid_address_ippref (a1), &gid_address_ippref (a2)); + break; + case GID_ADDR_LCAF: + lcaf1 = &gid_address_lcaf (a1); + lcaf2 = &gid_address_lcaf (a2); + if (lcaf_type (lcaf1) == lcaf_type (lcaf2)) + cmp = (*lcaf_cmp_fcts[lcaf_type (lcaf1)]) (lcaf1, lcaf2); + break; + case GID_ADDR_MAC: + cmp = mac_cmp (gid_address_mac (a1), gid_address_mac (a2)); + break; + + case GID_ADDR_SRC_DST: + cmp = sd_cmp (&gid_address_sd (a1), &gid_address_sd (a2)); + break; + default: + break; + } + + return cmp; +} + +u32 +locator_parse (void *b, locator_t * loc) +{ + locator_hdr_t *h; + u8 status = 1; /* locator up */ + int len; + + h = b; + if (!LOC_REACHABLE (h) && LOC_LOCAL (h)) + status = 0; + + len = gid_address_parse (LOC_ADDR (h), &loc->address); + if (len == ~0) + return len; + + loc->state = status; + loc->local = 0; + loc->priority = LOC_PRIORITY (h); + loc->weight = LOC_WEIGHT (h); + loc->mpriority = LOC_MPRIORITY (h); + loc->mweight = LOC_MWEIGHT (h); + + return sizeof (locator_hdr_t) + len; +} + +void +locator_copy (locator_t * dst, locator_t * src) +{ + /* TODO if gid become more complex, this will need to be changed! */ + clib_memcpy (dst, src, sizeof (*dst)); + if (!src->local) + gid_address_copy (&dst->address, &src->address); +} + +u32 +locator_cmp (locator_t * l1, locator_t * l2) +{ + u32 ret = 0; + if ((ret = gid_address_cmp (&l1->address, &l2->address)) != 0) + return 1; + + if (l1->priority != l2->priority) + return 1; + if (l1->weight != l2->weight) + return 1; + if (l1->mpriority != l2->mpriority) + return 1; + if (l1->mweight != l2->mweight) + return 1; + return 0; +} + +void +locator_free (locator_t * l) +{ + if (!l->local) + gid_address_free (&l->address); +} + +void +build_src_dst (gid_address_t * sd, gid_address_t * src, gid_address_t * dst) +{ + memset (sd, 0, sizeof (*sd)); + gid_address_type (sd) = GID_ADDR_SRC_DST; + gid_address_vni (sd) = gid_address_vni (dst); + gid_address_vni_mask (sd) = gid_address_vni_mask (dst); + + switch (gid_address_type (dst)) + { + case GID_ADDR_IP_PREFIX: + gid_address_sd_src_type (sd) = FID_ADDR_IP_PREF; + gid_address_sd_dst_type (sd) = FID_ADDR_IP_PREF; + ip_prefix_copy (&gid_address_sd_src_ippref (sd), + &gid_address_ippref (src)); + ip_prefix_copy (&gid_address_sd_dst_ippref (sd), + &gid_address_ippref (dst)); + break; + case GID_ADDR_MAC: + gid_address_sd_src_type (sd) = FID_ADDR_MAC; + gid_address_sd_dst_type (sd) = FID_ADDR_MAC; + mac_copy (gid_address_sd_src_mac (sd), gid_address_mac (src)); + mac_copy (gid_address_sd_dst_mac (sd), gid_address_mac (dst)); + break; + default: + clib_warning ("Unsupported gid type %d while conversion!", + gid_address_type (dst)); + break; + } +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/lisp-cp/lisp_types.h b/src/vnet/lisp-cp/lisp_types.h new file mode 100644 index 00000000000..ac58b894c2d --- /dev/null +++ b/src/vnet/lisp-cp/lisp_types.h @@ -0,0 +1,354 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef VNET_LISP_GPE_LISP_TYPES_H_ +#define VNET_LISP_GPE_LISP_TYPES_H_ + +#include <vnet/ip/ip.h> +#include <vnet/lisp-cp/lisp_cp_messages.h> + +#define SHA1_AUTH_DATA_LEN 20 +#define SHA256_AUTH_DATA_LEN 32 + +typedef enum +{ + HMAC_NO_KEY = 0, + HMAC_SHA_1_96, + HMAC_SHA_256_128 +} lisp_key_type_t; + +uword unformat_hmac_key_id (unformat_input_t * input, va_list * args); +u8 *format_hmac_key_id (u8 * s, va_list * args); + +typedef enum +{ + IP4, + IP6 +} ip_address_type_t; + +/* *INDENT-OFF* */ +typedef CLIB_PACKED(struct ip_address +{ + union + { + ip4_address_t v4; + ip6_address_t v6; + } ip; + u8 version; +}) ip_address_t; +/* *INDENT-ON* */ + +#define ip_addr_addr(_a) (_a)->ip +#define ip_addr_v4(_a) (_a)->ip.v4 +#define ip_addr_v6(_a) (_a)->ip.v6 +#define ip_addr_version(_a) (_a)->version + +int ip_address_cmp (const ip_address_t * ip1, const ip_address_t * ip2); +void ip_address_copy (ip_address_t * dst, const ip_address_t * src); +void ip_address_copy_addr (void *dst, const ip_address_t * src); +void ip_address_set (ip_address_t * dst, const void *src, u8 version); + +/* *INDENT-OFF* */ +typedef CLIB_PACKED(struct ip_prefix +{ + ip_address_t addr; + u8 len; +}) ip_prefix_t; +/* *INDENT-ON* */ + +#define ip_prefix_addr(_a) (_a)->addr +#define ip_prefix_version(_a) ip_addr_version(&ip_prefix_addr(_a)) +#define ip_prefix_len(_a) (_a)->len +#define ip_prefix_v4(_a) ip_addr_v4(&ip_prefix_addr(_a)) +#define ip_prefix_v6(_a) ip_addr_v6(&ip_prefix_addr(_a)) + +void ip_prefix_normalize (ip_prefix_t * a); + +extern void ip_address_to_fib_prefix (const ip_address_t * addr, + fib_prefix_t * prefix); +extern void ip_prefix_to_fib_prefix (const ip_prefix_t * ipp, + fib_prefix_t * fibp); + +typedef enum +{ + /* NOTE: ip addresses are left out on purpose. Use max masked ip-prefixes + * instead */ + GID_ADDR_IP_PREFIX, + GID_ADDR_LCAF, + GID_ADDR_MAC, + GID_ADDR_SRC_DST, + GID_ADDR_NO_ADDRESS, + GID_ADDR_TYPES +} gid_address_type_t; + +typedef enum +{ + /* make sure that values corresponds with RFC */ + LCAF_NULL_BODY = 0, + LCAF_AFI_LIST_TYPE, + LCAF_INSTANCE_ID, + LCAF_SOURCE_DEST = 12, + LCAF_TYPES +} lcaf_type_t; + +typedef enum fid_addr_type_t_ +{ + FID_ADDR_IP_PREF, + FID_ADDR_MAC +} __attribute__ ((packed)) fid_addr_type_t; + +/* flat address type */ +typedef struct +{ + union + { + ip_prefix_t ippref; + u8 mac[6]; + }; + fid_addr_type_t type; +} fid_address_t; + +typedef fid_address_t dp_address_t; + +#define fid_addr_ippref(_a) (_a)->ippref +#define fid_addr_mac(_a) (_a)->mac +#define fid_addr_type(_a) (_a)->type +u8 *format_fid_address (u8 * s, va_list * args); + +typedef struct +{ + fid_address_t src; + fid_address_t dst; +} source_dest_t; + +#define sd_dst(_a) (_a)->dst +#define sd_src(_a) (_a)->src +#define sd_src_ippref(_a) fid_addr_ippref(&sd_src(_a)) +#define sd_dst_ippref(_a) fid_addr_ippref(&sd_dst(_a)) +#define sd_src_mac(_a) fid_addr_mac(&sd_src(_a)) +#define sd_dst_mac(_a) fid_addr_mac(&sd_dst(_a)) +#define sd_src_type(_a) fid_addr_type(&sd_src(_a)) +#define sd_dst_type(_a) fid_addr_type(&sd_dst(_a)) + +typedef struct +{ + u8 vni_mask_len; + u32 vni; + struct _gid_address_t *gid_addr; +} vni_t; + +#define vni_vni(_a) (_a)->vni +#define vni_mask_len(_a) (_a)->vni_mask_len +#define vni_gid(_a) (_a)->gid_addr + +typedef struct +{ + /* the union needs to be at the beginning! */ + union + { + source_dest_t sd; + vni_t uni; + }; + u8 type; +} lcaf_t; + +#define lcaf_type(_a) (_a)->type +#define lcaf_vni(_a) vni_vni(& (_a)->uni) +#define lcaf_vni_len(_a) vni_mask_len(& (_a)->uni) + +/* might want to expand this in the future :) */ +typedef struct _gid_address_t +{ + union + { + ip_prefix_t ippref; + lcaf_t lcaf; + u8 mac[6]; + source_dest_t sd; + }; + u8 type; + u32 vni; + u8 vni_mask; +} gid_address_t; + +u8 *format_ip_address (u8 * s, va_list * args); +uword unformat_ip_address (unformat_input_t * input, va_list * args); +u8 *format_ip_prefix (u8 * s, va_list * args); +uword unformat_ip_prefix (unformat_input_t * input, va_list * args); +u8 *format_mac_address (u8 * s, va_list * args); +uword unformat_mac_address (unformat_input_t * input, va_list * args); + +u16 ip4_address_size_to_put (); +u16 ip6_address_size_to_put (); +u32 ip4_address_put (u8 * b, ip4_address_t * a); +u32 ip6_address_put (u8 * b, ip6_address_t * a); + +u16 ip_address_size_to_write (ip_address_t * a); +u16 ip_address_iana_afi (ip_address_t * a); +u8 ip_address_max_len (u8 ver); +u32 ip_address_put (u8 * b, ip_address_t * a); +void ip_address_to_46 (const ip_address_t * addr, + ip46_address_t * a, fib_protocol_t * proto); + +/* LISP AFI codes */ +typedef enum +{ + LISP_AFI_NO_ADDR, + LISP_AFI_IP, + LISP_AFI_IP6, + LISP_AFI_LCAF = 16387, + LISP_AFI_MAC = 16389 +} lisp_afi_e; + +u8 *format_gid_address (u8 * s, va_list * args); +uword unformat_gid_address (unformat_input_t * input, va_list * args); +int gid_address_cmp (gid_address_t * a1, gid_address_t * a2); +void gid_address_free (gid_address_t * a); + +u16 gid_address_size_to_put (gid_address_t * a); +u16 gid_address_put (u8 * b, gid_address_t * gid); +u8 gid_address_len (gid_address_t * a); +void *gid_address_cast (gid_address_t * gid, gid_address_type_t type); +void gid_address_copy (gid_address_t * dst, gid_address_t * src); +u32 gid_address_parse (u8 * offset, gid_address_t * a); +void gid_address_ip_set (gid_address_t * dst, void *src, u8 version); + +#define gid_address_type(_a) (_a)->type +#define gid_address_ippref(_a) (_a)->ippref +#define gid_address_ippref_len(_a) (_a)->ippref.len +#define gid_address_ip(_a) ip_prefix_addr(&gid_address_ippref(_a)) +#define gid_address_ip_version(_a) ip_addr_version(&gid_address_ip(_a)) +#define gid_address_lcaf(_a) (_a)->lcaf +#define gid_address_mac(_a) (_a)->mac +#define gid_address_vni(_a) (_a)->vni +#define gid_address_vni_mask(_a) (_a)->vni_mask +#define gid_address_sd_dst_ippref(_a) sd_dst_ippref(&(_a)->sd) +#define gid_address_sd_src_ippref(_a) sd_src_ippref(&(_a)->sd) +#define gid_address_sd_dst_mac(_a) sd_dst_mac(&(_a)->sd) +#define gid_address_sd_src_mac(_a) sd_src_mac(&(_a)->sd) +#define gid_address_sd(_a) (_a)->sd +#define gid_address_sd_src(_a) sd_src(&gid_address_sd(_a)) +#define gid_address_sd_dst(_a) sd_dst(&gid_address_sd(_a)) +#define gid_address_sd_src_type(_a) sd_src_type(&gid_address_sd(_a)) +#define gid_address_sd_dst_type(_a) sd_dst_type(&gid_address_sd(_a)) + +/* 'sub'address functions */ +#define foreach_gid_address_type_fcns \ + _(ip_prefix) \ + _(lcaf) \ + _(mac) \ + _(sd) + +/* *INDENT-OFF* */ +#define _(_n) \ +u16 _n ## _size_to_write (void * pref); \ +u16 _n ## _write (u8 * p, void * pref); \ +u8 _n ## _length (void *a); \ +void * _n ## _cast (gid_address_t * a); \ +void _n ## _copy (void * dst , void * src); + +foreach_gid_address_type_fcns +#undef _ +/* *INDENT-ON* */ + +always_inline u64 +mac_to_u64 (u8 * m) +{ + return (*((u64 *) m) & 0xffffffffffff); +} + +typedef struct +{ + /* mark locator as local as opposed to remote */ + u8 local; + u8 state; + union + { + u32 sw_if_index; + gid_address_t address; + }; + u8 priority; + u8 weight; + u8 mpriority; + u8 mweight; + u8 probed; +} locator_t; + +u32 locator_parse (void *ptr, locator_t * loc); +void locator_copy (locator_t * dst, locator_t * src); +u32 locator_cmp (locator_t * l1, locator_t * l2); +void locator_free (locator_t * l); + +typedef struct +{ + /* locator-set name */ + u8 *name; + + /* vector of locator indices */ + u32 *locator_indices; + u8 local; +} locator_set_t; + +typedef struct +{ + gid_address_t eid; + + /* index of local locator set */ + union + { + u32 locator_set_index; + locator_t *locators; /* used for map register message */ + }; + + u32 ttl; + u8 action; + u8 authoritative; + + u8 local; + /* valid only for remote mappings */ + u8 is_static; + u8 *key; + lisp_key_type_t key_id; + u8 timer_set; +} mapping_t; + +uword +unformat_negative_mapping_action (unformat_input_t * input, va_list * args); +u8 *format_negative_mapping_action (u8 *, va_list * args); + +typedef struct locator_pair +{ + /* local and remote locators (underlay attachment points) */ + ip_address_t lcl_loc; + ip_address_t rmt_loc; + + u8 priority; + u8 weight; +} locator_pair_t; + +void +build_src_dst (gid_address_t * sd, gid_address_t * src, gid_address_t * dst); + +void gid_address_from_ip (gid_address_t * g, ip_address_t * ip); + +#endif /* VNET_LISP_GPE_LISP_TYPES_H_ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/lisp-cp/packets.c b/src/vnet/lisp-cp/packets.c new file mode 100644 index 00000000000..3a4f421b02a --- /dev/null +++ b/src/vnet/lisp-cp/packets.c @@ -0,0 +1,269 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <vnet/lisp-cp/packets.h> +#include <vnet/lisp-cp/lisp_cp_messages.h> +#include <vnet/ip/udp_packet.h> + +/* Returns IP ID for the packet */ +/* static u16 ip_id = 0; +static inline u16 +get_IP_ID() +{ + ip_id++; + return (ip_id); +} */ + +u16 +udp_ip4_checksum (const void *b, u32 len, u8 * src, u8 * dst) +{ + const u16 *buf = b; + u16 *ip_src = (u16 *) src; + u16 *ip_dst = (u16 *) dst; + u32 length = len; + u32 sum = 0; + + while (len > 1) + { + sum += *buf++; + if (sum & 0x80000000) + sum = (sum & 0xFFFF) + (sum >> 16); + len -= 2; + } + + /* Add the padding if the packet length is odd */ + if (len & 1) + sum += *((u8 *) buf); + + /* Add the pseudo-header */ + sum += *(ip_src++); + sum += *ip_src; + + sum += *(ip_dst++); + sum += *ip_dst; + + sum += clib_host_to_net_u16 (IP_PROTOCOL_UDP); + sum += clib_host_to_net_u16 (length); + + /* Add the carries */ + while (sum >> 16) + sum = (sum & 0xFFFF) + (sum >> 16); + + /* Return the one's complement of sum */ + return ((u16) (~sum)); +} + +u16 +udp_ip6_checksum (ip6_header_t * ip6, udp_header_t * up, u32 len) +{ + size_t i; + register const u16 *sp; + u32 sum; + union + { + struct + { + ip6_address_t ph_src; + ip6_address_t ph_dst; + u32 ph_len; + u8 ph_zero[3]; + u8 ph_nxt; + } ph; + u16 pa[20]; + } phu; + + /* pseudo-header */ + memset (&phu, 0, sizeof (phu)); + phu.ph.ph_src = ip6->src_address; + phu.ph.ph_dst = ip6->dst_address; + phu.ph.ph_len = clib_host_to_net_u32 (len); + phu.ph.ph_nxt = IP_PROTOCOL_UDP; + + sum = 0; + for (i = 0; i < sizeof (phu.pa) / sizeof (phu.pa[0]); i++) + sum += phu.pa[i]; + + sp = (const u16 *) up; + + for (i = 0; i < (len & ~1); i += 2) + sum += *sp++; + + if (len & 1) + sum += clib_host_to_net_u16 ((*(const u8 *) sp) << 8); + + while (sum > 0xffff) + sum = (sum & 0xffff) + (sum >> 16); + sum = ~sum & 0xffff; + + return (sum); +} + +u16 +udp_checksum (udp_header_t * uh, u32 udp_len, void *ih, u8 version) +{ + switch (version) + { + case IP4: + return (udp_ip4_checksum (uh, udp_len, + ((ip4_header_t *) ih)->src_address.as_u8, + ((ip4_header_t *) ih)->dst_address.as_u8)); + case IP6: + return (udp_ip6_checksum (ih, uh, udp_len)); + default: + return ~0; + } +} + +void * +pkt_push_udp (vlib_main_t * vm, vlib_buffer_t * b, u16 sp, u16 dp) +{ + udp_header_t *uh; + u16 udp_len = sizeof (udp_header_t) + vlib_buffer_length_in_chain (vm, b); + + uh = vlib_buffer_push_uninit (b, sizeof (*uh)); + + uh->src_port = clib_host_to_net_u16 (sp); + uh->dst_port = clib_host_to_net_u16 (dp); + uh->length = clib_host_to_net_u16 (udp_len); + uh->checksum = 0; + return uh; +} + +void * +pkt_push_ipv4 (vlib_main_t * vm, vlib_buffer_t * b, ip4_address_t * src, + ip4_address_t * dst, int proto) +{ + ip4_header_t *ih; + + /* make some room */ + ih = vlib_buffer_push_uninit (b, sizeof (ip4_header_t)); + + ih->ip_version_and_header_length = 0x45; + ih->tos = 0; + ih->length = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b)); + + /* iph->fragment_id = clib_host_to_net_u16(get_IP_ID ()); */ + + /* TODO: decide if we allow fragments in case of control */ + ih->flags_and_fragment_offset = clib_host_to_net_u16 (IP_DF); + ih->ttl = 255; + ih->protocol = proto; + ih->src_address.as_u32 = src->as_u32; + ih->dst_address.as_u32 = dst->as_u32; + + ih->checksum = ip4_header_checksum (ih); + return ih; +} + +void * +pkt_push_ipv6 (vlib_main_t * vm, vlib_buffer_t * b, ip6_address_t * src, + ip6_address_t * dst, int proto) +{ + ip6_header_t *ip6h; + u16 payload_length; + + /* make some room */ + ip6h = vlib_buffer_push_uninit (b, sizeof (ip6_header_t)); + + ip6h->ip_version_traffic_class_and_flow_label = + clib_host_to_net_u32 (0x6 << 28); + + /* calculate ip6 payload length */ + payload_length = vlib_buffer_length_in_chain (vm, b); + payload_length -= sizeof (*ip6h); + + ip6h->payload_length = clib_host_to_net_u16 (payload_length); + + ip6h->hop_limit = 0xff; + ip6h->protocol = proto; + clib_memcpy (ip6h->src_address.as_u8, src->as_u8, + sizeof (ip6h->src_address)); + clib_memcpy (ip6h->dst_address.as_u8, dst->as_u8, + sizeof (ip6h->src_address)); + + return ip6h; +} + +void * +pkt_push_ip (vlib_main_t * vm, vlib_buffer_t * b, ip_address_t * src, + ip_address_t * dst, u32 proto) +{ + if (ip_addr_version (src) != ip_addr_version (dst)) + { + clib_warning ("src %U and dst %U IP have different AFI! Discarding!", + format_ip_address, src, format_ip_address, dst); + return 0; + } + + switch (ip_addr_version (src)) + { + case IP4: + return pkt_push_ipv4 (vm, b, &ip_addr_v4 (src), &ip_addr_v4 (dst), + proto); + break; + case IP6: + return pkt_push_ipv6 (vm, b, &ip_addr_v6 (src), &ip_addr_v6 (dst), + proto); + break; + } + + return 0; +} + +void * +pkt_push_udp_and_ip (vlib_main_t * vm, vlib_buffer_t * b, u16 sp, u16 dp, + ip_address_t * sip, ip_address_t * dip) +{ + u16 udpsum; + udp_header_t *uh; + void *ih; + + uh = pkt_push_udp (vm, b, sp, dp); + + ih = pkt_push_ip (vm, b, sip, dip, IP_PROTOCOL_UDP); + + udpsum = udp_checksum (uh, clib_net_to_host_u16 (uh->length), ih, + ip_addr_version (sip)); + if (udpsum == (u16) ~ 0) + { + clib_warning ("Failed UDP checksum! Discarding"); + return 0; + } + uh->checksum = udpsum; + return ih; +} + +void * +pkt_push_ecm_hdr (vlib_buffer_t * b) +{ + ecm_hdr_t *h; + h = vlib_buffer_push_uninit (b, sizeof (h[0])); + + memset (h, 0, sizeof (h[0])); + h->type = LISP_ENCAP_CONTROL_TYPE; + memset (h->reserved2, 0, sizeof (h->reserved2)); + + return h; +} + +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/lisp-cp/packets.h b/src/vnet/lisp-cp/packets.h new file mode 100644 index 00000000000..212a1d78163 --- /dev/null +++ b/src/vnet/lisp-cp/packets.h @@ -0,0 +1,82 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <vnet/vnet.h> +#include <vnet/lisp-cp/lisp_types.h> + +#define IP_DF 0x4000 /* don't fragment */ + +void *pkt_push_ip (vlib_main_t * vm, vlib_buffer_t * b, ip_address_t * src, + ip_address_t * dst, u32 proto); + +void *pkt_push_udp_and_ip (vlib_main_t * vm, vlib_buffer_t * b, u16 sp, + u16 dp, ip_address_t * sip, ip_address_t * dip); + +void *pkt_push_ecm_hdr (vlib_buffer_t * b); + +always_inline u8 * +vlib_buffer_get_tail (vlib_buffer_t * b) +{ + return b->data + b->current_data + b->current_length; +} + +always_inline void * +vlib_buffer_put_uninit (vlib_buffer_t * b, u8 size) +{ + /* XXX should make sure there's enough space! */ + void *p = vlib_buffer_get_tail (b); + b->current_length += size; + return p; +} + +always_inline void * +vlib_buffer_push_uninit (vlib_buffer_t * b, u8 size) +{ + /* XXX should make sure there's enough space! */ + ASSERT (b->current_data >= size); + b->current_data -= size; + b->current_length += size; + + return vlib_buffer_get_current (b); +} + +always_inline void * +vlib_buffer_make_headroom (vlib_buffer_t * b, u8 size) +{ + /* XXX should make sure there's enough space! */ + b->current_data += size; + return vlib_buffer_get_current (b); +} + +always_inline void * +vlib_buffer_pull (vlib_buffer_t * b, u8 size) +{ + if (b->current_length < size) + return 0; + + void *data = vlib_buffer_get_current (b); + vlib_buffer_advance (b, size); + return data; +} + +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |