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Diffstat (limited to 'src/vnet/lisp-cp/control.c')
| -rw-r--r-- | src/vnet/lisp-cp/control.c | 5033 |
1 files changed, 0 insertions, 5033 deletions
diff --git a/src/vnet/lisp-cp/control.c b/src/vnet/lisp-cp/control.c deleted file mode 100644 index 60d85619dc5..00000000000 --- a/src/vnet/lisp-cp/control.c +++ /dev/null @@ -1,5033 +0,0 @@ -/* - * 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_fwd_entry.h> -#include <vnet/lisp-gpe/lisp_gpe_tenant.h> -#include <vnet/lisp-gpe/lisp_gpe_tunnel.h> -#include <vnet/fib/fib_entry.h> -#include <vnet/fib/fib_table.h> -#include <vnet/ethernet/arp_packet.h> -#include <vnet/ethernet/packet.h> - -#include <openssl/evp.h> -#include <vnet/crypto/crypto.h> - -#define MAX_VALUE_U24 0xffffff - -/* mapping timer control constants (in seconds) */ -#define TIME_UNTIL_REFETCH_OR_DELETE 20 -#define MAPPING_TIMEOUT (((m->ttl) * 60) - TIME_UNTIL_REFETCH_OR_DELETE) - -lisp_cp_main_t lisp_control_main; - -u8 *format_lisp_cp_input_trace (u8 * s, va_list * args); -static void *send_map_request_thread_fn (void *arg); - -typedef enum -{ - LISP_CP_INPUT_NEXT_DROP, - LISP_CP_INPUT_N_NEXT, -} lisp_cp_input_next_t; - -typedef struct -{ - u8 is_resend; - gid_address_t seid; - gid_address_t deid; - u8 smr_invoked; -} map_request_args_t; - -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 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 == AF_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; -} - -/** - * 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 == AF_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, - u8 with_default_route) -{ - 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], - with_default_route); - } - 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 dst_map_index) -{ - vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a; - fwd_entry_t *fe = 0; - uword *feip = 0; - clib_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_del_fwd_counters (a, feip[0]); - 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; - - clib_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; - gid_address_t *rmt_eid, *lcl_eid; - mapping_t *lcl_map, *rmt_map; - u32 sw_if_index, **rmts, rmts_idx; - uword *feip = 0, *dpid, *rmts_stored_idxp = 0; - fwd_entry_t *fe; - u8 type, is_src_dst = 0; - int rv; - - clib_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, dst_map_index); - - /* - * Determine local mapping and eid - */ - if (lcm->flags & LISP_FLAG_PITR_MODE) - { - if (lcm->pitr_map_index != ~0) - lcl_map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index); - else - { - clib_warning ("no PITR mapping configured!"); - return; - } - } - else - lcl_map = pool_elt_at_index (lcm->mapping_pool, src_map_index); - lcl_eid = &lcl_map->eid; - - /* - * Determine remote mapping and eid - */ - rmt_map = pool_elt_at_index (lcm->mapping_pool, dst_map_index); - rmt_eid = &rmt_map->eid; - - /* - * Build and 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 (rmt_eid)) - { - gid_address_sd_to_flat (&a->rmt_eid, rmt_eid, - &gid_address_sd_dst (rmt_eid)); - gid_address_sd_to_flat (&a->lcl_eid, rmt_eid, - &gid_address_sd_src (rmt_eid)); - } - else - { - gid_address_copy (&a->rmt_eid, rmt_eid); - gid_address_copy (&a->lcl_eid, lcl_eid); - } - is_src_dst = 1; - } - else - gid_address_copy (&a->rmt_eid, rmt_eid); - - a->vni = gid_address_vni (&a->rmt_eid); - a->is_src_dst = is_src_dst; - - /* 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 */ - rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs); - - /* Either rmt mapping is negative or we can't find underlay path. - * Try again with petr if configured */ - if (rv == 0 && (lcm->flags & LISP_FLAG_USE_PETR)) - { - rmt_map = lisp_get_petr_mapping (lcm); - rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs); - } - - /* negative entry */ - if (rv == 0) - { - a->is_negative = 1; - a->action = rmt_map->action; - } - - rv = vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index); - if (rv) - { - if (a->locator_pairs) - vec_free (a->locator_pairs); - return; - } - - /* add tunnel to fwd entry table */ - pool_get (lcm->fwd_entry_pool, fe); - vnet_lisp_gpe_add_fwd_counters (a, fe - lcm->fwd_entry_pool); - - fe->locator_pairs = a->locator_pairs; - gid_address_copy (&fe->reid, &a->rmt_eid); - - if (is_src_dst) - gid_address_copy (&fe->leid, &a->lcl_eid); - else - gid_address_copy (&fe->leid, lcl_eid); - - fe->is_src_dst = is_src_dst; - hash_set (lcm->fwd_entry_by_mapping_index, dst_map_index, - fe - lcm->fwd_entry_pool); - - /* Add rmt mapping to the vector of adjacent mappings to lcl mapping */ - rmts_stored_idxp = - hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, src_map_index); - if (!rmts_stored_idxp) - { - pool_get (lcm->lcl_to_rmt_adjacencies, rmts); - clib_memset (rmts, 0, sizeof (*rmts)); - rmts_idx = rmts - lcm->lcl_to_rmt_adjacencies; - hash_set (lcm->lcl_to_rmt_adjs_by_lcl_idx, src_map_index, rmts_idx); - } - else - { - rmts_idx = (u32) (*rmts_stored_idxp); - rmts = pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idx); - } - vec_add1 (rmts[0], dst_map_index); -} - -typedef struct -{ - u32 si; - u32 di; -} fwd_entry_mt_arg_t; - -static void * -dp_add_fwd_entry_thread_fn (void *arg) -{ - fwd_entry_mt_arg_t *a = arg; - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - dp_add_fwd_entry (lcm, a->si, a->di); - return 0; -} - -static int -dp_add_fwd_entry_from_mt (u32 si, u32 di) -{ - fwd_entry_mt_arg_t a; - - clib_memset (&a, 0, sizeof (a)); - a.si = si; - a.di = di; - - vl_api_rpc_call_main_thread (dp_add_fwd_entry_thread_fn, - (u8 *) & a, sizeof (a)); - return 0; -} - -/** - * 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 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; - } - - clib_memset (ms, 0, sizeof (*ms)); - ip_address_copy (&ms->address, addr); - vec_add1 (lcm->map_servers, ms[0]); - - if (vec_len (lcm->map_servers) == 1) - lcm->do_map_server_election = 1; - } - 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)) - { - if (!ip_address_cmp (&ms->address, &lcm->active_map_server)) - lcm->do_map_server_election = 1; - - vec_del1 (lcm->map_servers, i); - break; - } - } - } - - return 0; -} - -/** - * 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; - u32 **rmts = 0, *remote_idxp, rmts_itr, remote_idx; - uword *rmts_idxp; - mapping_t *m, *old_map; - u32 **eid_indexes; - - if (gid_address_type (&a->eid) == GID_ADDR_NSH) - { - if (gid_address_vni (&a->eid) != 0) - { - clib_warning ("Supported only default VNI for NSH!"); - return VNET_API_ERROR_INVALID_ARGUMENT; - } - if (gid_address_nsh_spi (&a->eid) > MAX_VALUE_U24) - { - clib_warning ("SPI is greater than 24bit!"); - return VNET_API_ERROR_INVALID_ARGUMENT; - } - } - - 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; - m->authoritative = a->authoritative; - - 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) - { - /* Remove adjacencies associated with the local mapping */ - rmts_idxp = hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, mi); - if (rmts_idxp) - { - rmts = - pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idxp[0]); - vec_foreach (remote_idxp, rmts[0]) - { - dp_del_fwd_entry (lcm, remote_idxp[0]); - } - vec_free (rmts[0]); - pool_put (lcm->lcl_to_rmt_adjacencies, rmts); - hash_unset (lcm->lcl_to_rmt_adjs_by_lcl_idx, mi); - } - - 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); - } - else - { - /* Remove remote (if present) from the vectors of lcl-to-rmts - * TODO: Address this in a more efficient way. - */ - /* *INDENT-OFF* */ - pool_foreach (rmts, lcm->lcl_to_rmt_adjacencies, - ({ - vec_foreach_index (rmts_itr, rmts[0]) - { - remote_idx = vec_elt (rmts[0], rmts_itr); - if (mi == remote_idx) - { - vec_del1 (rmts[0], rmts_itr); - break; - } - } - })); - /* *INDENT-ON* */ - } - - /* 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 && GID_ADDR_NSH != type) - { - 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 int -add_l2_arp_bd (BVT (clib_bihash_kv) * kvp, void *arg) -{ - u32 **ht = arg; - u32 version = (u32) kvp->key[0]; - if (AF_IP6 == version) - return (BIHASH_WALK_CONTINUE); - - u32 bd = (u32) (kvp->key[0] >> 32); - hash_set (ht[0], bd, 0); - return (BIHASH_WALK_CONTINUE); -} - -u32 * -vnet_lisp_l2_arp_bds_get (void) -{ - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - u32 *bds = 0; - - gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid, - add_l2_arp_bd, &bds); - return bds; -} - -static int -add_ndp_bd (BVT (clib_bihash_kv) * kvp, void *arg) -{ - u32 **ht = arg; - u32 version = (u32) kvp->key[0]; - if (AF_IP4 == version) - return (BIHASH_WALK_CONTINUE); - - u32 bd = (u32) (kvp->key[0] >> 32); - hash_set (ht[0], bd, 0); - return (BIHASH_WALK_CONTINUE); -} - -u32 * -vnet_lisp_ndp_bds_get (void) -{ - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - u32 *bds = 0; - - gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid, - add_ndp_bd, &bds); - return bds; -} - -typedef struct -{ - void *vector; - u32 bd; -} lisp_add_l2_arp_ndp_args_t; - -static int -add_l2_arp_entry (BVT (clib_bihash_kv) * kvp, void *arg) -{ - lisp_add_l2_arp_ndp_args_t *a = arg; - lisp_api_l2_arp_entry_t **vector = a->vector, e; - - u32 version = (u32) kvp->key[0]; - if (AF_IP6 == version) - return (BIHASH_WALK_CONTINUE); - - u32 bd = (u32) (kvp->key[0] >> 32); - - if (bd == a->bd) - { - mac_copy (e.mac, (void *) &kvp->value); - e.ip4 = (u32) kvp->key[1]; - vec_add1 (vector[0], e); - } - return (BIHASH_WALK_CONTINUE); -} - -lisp_api_l2_arp_entry_t * -vnet_lisp_l2_arp_entries_get_by_bd (u32 bd) -{ - lisp_api_l2_arp_entry_t *entries = 0; - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - lisp_add_l2_arp_ndp_args_t a; - - a.vector = &entries; - a.bd = bd; - - gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid, - add_l2_arp_entry, &a); - return entries; -} - -static int -add_ndp_entry (BVT (clib_bihash_kv) * kvp, void *arg) -{ - lisp_add_l2_arp_ndp_args_t *a = arg; - lisp_api_ndp_entry_t **vector = a->vector, e; - - u32 version = (u32) kvp->key[0]; - if (AF_IP4 == version) - return (BIHASH_WALK_CONTINUE); - - u32 bd = (u32) (kvp->key[0] >> 32); - - if (bd == a->bd) - { - mac_copy (e.mac, (void *) &kvp->value); - clib_memcpy (e.ip6, &kvp->key[1], 16); - vec_add1 (vector[0], e); - } - return (BIHASH_WALK_CONTINUE); -} - -lisp_api_ndp_entry_t * -vnet_lisp_ndp_entries_get_by_bd (u32 bd) -{ - lisp_api_ndp_entry_t *entries = 0; - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - lisp_add_l2_arp_ndp_args_t a; - - a.vector = &entries; - a.bd = bd; - - gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid, - add_ndp_entry, &a); - return entries; -} - -int -vnet_lisp_add_del_l2_arp_ndp_entry (gid_address_t * key, u8 * mac, u8 is_add) -{ - if (vnet_lisp_enable_disable_status () == 0) - { - clib_warning ("LISP is disabled!"); - return VNET_API_ERROR_LISP_DISABLED; - } - - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - int rc = 0; - - u64 res = gid_dictionary_lookup (&lcm->mapping_index_by_gid, key); - if (is_add) - { - if (res != GID_LOOKUP_MISS_L2) - { - clib_warning ("Entry %U exists in DB!", format_gid_address, key); - return VNET_API_ERROR_ENTRY_ALREADY_EXISTS; - } - u64 val = mac_to_u64 (mac); - gid_dictionary_add_del (&lcm->mapping_index_by_gid, key, val, - 1 /* is_add */ ); - } - else - { - if (res == GID_LOOKUP_MISS_L2) - { - clib_warning ("ONE entry %U not found - cannot delete!", - format_gid_address, key); - return -1; - } - gid_dictionary_add_del (&lcm->mapping_index_by_gid, key, 0, - 0 /* is_add */ ); - } - - return rc; -} - -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 VNET_API_ERROR_LISP_DISABLED; - } - - 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 /* is_add */ , - 1 /* with_default_route */ ); - } - else - { - if (!dp_idp || !vnip) - { - clib_warning ("vni %d or vrf %d not used in any vrf/vni! " - "mapping!", vni, dp_id); - return -1; - } - /* remove dp iface */ - dp_add_del_iface (lcm, vni, is_l2, 0 /* is_add */ , 0 /* unused */ ); - - hash_unset (dp_table_by_vni[0], vni); - hash_unset (vni_by_dp_table[0], dp_id); - } - return 0; - -} - -/* 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; - - clib_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) - { - vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args; - - clib_memset (adj_args, 0, sizeof (adj_args[0])); - gid_address_copy (&adj_args->reid, e); - adj_args->is_add = 0; - if (vnet_lisp_add_del_adjacency (adj_args)) - clib_warning ("failed to del adjacency!"); - - vnet_lisp_del_mapping (e, NULL); - } - - vec_free (a.eids_to_be_deleted); -} - -static int -is_local_ip (lisp_cp_main_t * lcm, ip_address_t * addr) -{ - fib_node_index_t fei; - fib_prefix_t prefix; - fib_entry_flag_t flags; - - ip_address_to_fib_prefix (addr, &prefix); - - fei = fib_table_lookup (0, &prefix); - flags = fib_entry_get_flags (fei); - return (FIB_ENTRY_FLAG_LOCAL & flags); -} - -/** - * Adds/updates mapping. Does not program forwarding. - * - * @param a parameters of the new mapping - * @param rlocs vector of remote locators - * @param res_map_index index of the newly created mapping - * @param locators_changed indicator if locators were updated in the mapping - * @return return code - */ -int -vnet_lisp_add_mapping (vnet_lisp_add_del_mapping_args_t * a, - locator_t * rlocs, - u32 * res_map_index, u8 * is_updated) -{ - 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; - locator_t *loc; - - 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; - if (is_updated) - is_updated[0] = 0; - - clib_memset (ls_args, 0, sizeof (ls_args[0])); - - ls_args->locators = rlocs; - mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid); - old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0; - - /* check if none of the locators match locally configured address */ - vec_foreach (loc, rlocs) - { - ip_prefix_t *p = &gid_address_ippref (&loc->address); - if (is_local_ip (lcm, &ip_prefix_addr (p))) - { - clib_warning ("RLOC %U matches a local address!", - format_gid_address, &loc->address); - return VNET_API_ERROR_LISP_RLOC_LOCAL; - } - } - - /* overwrite: if mapping already exists, decide if locators should be - * updated and be done */ - if (old_map && gid_address_cmp (&old_map->eid, &a->eid) == 0) - { - if (!a->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, - &a->eid); - return 0; - } - - locator_set_t *old_ls; - - /* update mapping attributes */ - old_map->action = a->action; - if (old_map->action != a->action && NULL != is_updated) - is_updated[0] = 1; - - old_map->authoritative = a->authoritative; - old_map->ttl = a->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 (is_updated) - is_updated[0] = 1; - } - if (res_map_index) - res_map_index[0] = mi; - } - /* new mapping */ - else - { - if (is_updated) - is_updated[0] = 1; - remove_overlapping_sub_prefixes (lcm, &a->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 */ - a->is_add = 1; - a->locator_set_index = ls_index; - vnet_lisp_map_cache_add_del (a, &dst_map_index); - - if (res_map_index) - res_map_index[0] = dst_map_index; - } - - /* success */ - return 0; -} - -/** - * Removes a mapping. Does not program forwarding. - * - * @param eid end-host identifier - * @param res_map_index index of the removed mapping - * @return return code - */ -int -vnet_lisp_del_mapping (gid_address_t * eid, u32 * res_map_index) -{ - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - 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; - mapping_t *old_map; - u32 mi; - - clib_memset (ls_args, 0, sizeof (ls_args[0])); - clib_memset (m_args, 0, sizeof (m_args[0])); - if (res_map_index) - res_map_index[0] = ~0; - - 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 (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; - - ls_args->is_add = 0; - ls_args->index = old_map->locator_set_index; - - /* delete timer associated to the mapping if any */ - if (old_map->timer_set) - TW (tw_timer_stop) (&lcm->wheel, old_map->timer_handle); - - /* delete locator set */ - vnet_lisp_add_del_locator_set (ls_args, 0); - - /* delete mapping associated from map-cache */ - vnet_lisp_map_cache_add_del (m_args, 0); - - /* 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, 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. - */ -int -vnet_lisp_add_del_adjacency (vnet_lisp_add_del_adjacency_args_t * a) -{ - lisp_cp_main_t *lcm = &lisp_control_main; - 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, - &a->reid, &a->leid); - if (GID_LOOKUP_MISS == remote_mi) - { - clib_warning ("Remote eid %U not found. Cannot add adjacency!", - format_gid_address, &a->reid); - - return -1; - } - - if (a->is_add) - { - /* check if source eid has an associated mapping. If pitr mode is on, - * just use the pitr's mapping */ - if (lcm->flags & LISP_FLAG_PITR_MODE) - { - if (lcm->pitr_map_index != ~0) - { - local_mi = lcm->pitr_map_index; - } - else - { - /* PITR mode is on, but no mapping is configured */ - return -1; - } - } - else - { - if (gid_address_type (&a->reid) == GID_ADDR_NSH) - { - if (lcm->nsh_map_index == ~0) - local_mi = GID_LOOKUP_MISS; - else - local_mi = lcm->nsh_map_index; - } - else - { - local_mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, - &a->leid); - } - } - - if (GID_LOOKUP_MISS == local_mi) - { - clib_warning ("Local eid %U not found. Cannot add adjacency!", - format_gid_address, &a->leid); - - return -1; - } - - /* update forwarding */ - dp_add_fwd_entry (lcm, local_mi, remote_mi); - } - else - dp_del_fwd_entry (lcm, remote_mi); - - return 0; -} - -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; -} - -int -vnet_lisp_nsh_set_locator_set (u8 * locator_set_name, u8 is_add) -{ - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - lisp_gpe_main_t *lgm = vnet_lisp_gpe_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; - } - - if (is_add) - { - if (lcm->nsh_map_index == (u32) ~ 0) - { - 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]; - - pool_get (lcm->mapping_pool, m); - clib_memset (m, 0, sizeof *m); - m->locator_set_index = locator_set_index; - m->local = 1; - m->nsh_set = 1; - lcm->nsh_map_index = m - lcm->mapping_pool; - - if (~0 == vnet_lisp_gpe_add_nsh_iface (lgm)) - return -1; - } - } - else - { - if (lcm->nsh_map_index != (u32) ~ 0) - { - /* remove NSH mapping */ - pool_put_index (lcm->mapping_pool, lcm->nsh_map_index); - lcm->nsh_map_index = ~0; - vnet_lisp_gpe_del_nsh_iface (lgm); - } - } - return 0; -} - -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; - m->pitr_set = 1; - lcm->pitr_map_index = m - lcm->mapping_pool; - } - else - { - /* remove pitr mapping */ - pool_put_index (lcm->mapping_pool, lcm->pitr_map_index); - lcm->pitr_map_index = ~0; - } - return 0; -} - -int -vnet_lisp_map_register_fallback_threshold_set (u32 value) -{ - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - if (0 == value) - { - return VNET_API_ERROR_INVALID_ARGUMENT; - } - - lcm->max_expired_map_registers = value; - return 0; -} - -u32 -vnet_lisp_map_register_fallback_threshold_get (void) -{ - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - return lcm->max_expired_map_registers; -} - -/** - * Configure Proxy-ETR - * - * @param ip PETR's IP address - * @param is_add Flag that indicates if this is an addition or removal - * - * return 0 on success - */ -int -vnet_lisp_use_petr (ip_address_t * ip, u8 is_add) -{ - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - u32 ls_index = ~0; - mapping_t *m; - vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args; - locator_t loc; - - if (vnet_lisp_enable_disable_status () == 0) - { - clib_warning ("LISP is disabled!"); - return VNET_API_ERROR_LISP_DISABLED; - } - - clib_memset (ls_args, 0, sizeof (*ls_args)); - - if (is_add) - { - /* Create placeholder petr locator-set */ - clib_memset (&loc, 0, sizeof (loc)); - gid_address_from_ip (&loc.address, ip); - loc.priority = 1; - loc.state = loc.weight = 1; - loc.local = 0; - - ls_args->is_add = 1; - ls_args->index = ~0; - vec_add1 (ls_args->locators, loc); - vnet_lisp_add_del_locator_set (ls_args, &ls_index); - - /* Add petr mapping */ - pool_get (lcm->mapping_pool, m); - m->locator_set_index = ls_index; - lcm->petr_map_index = m - lcm->mapping_pool; - - /* Enable use-petr */ - lcm->flags |= LISP_FLAG_USE_PETR; - } - else - { - m = pool_elt_at_index (lcm->mapping_pool, lcm->petr_map_index); - - /* Remove petr locator */ - ls_args->is_add = 0; - ls_args->index = m->locator_set_index; - vnet_lisp_add_del_locator_set (ls_args, 0); - - /* Remove petr mapping */ - pool_put_index (lcm->mapping_pool, lcm->petr_map_index); - - /* Disable use-petr */ - lcm->flags &= ~LISP_FLAG_USE_PETR; - lcm->petr_map_index = ~0; - } - return 0; -} - -/* 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) - { - ASSERT (a->name); - 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 void -update_adjacencies_by_map_index (lisp_cp_main_t * lcm, - u32 mapping_index, u8 remove_only) -{ - fwd_entry_t *fwd; - mapping_t *map; - uword *fei = 0, *rmts_idxp = 0; - u32 **rmts = 0, *remote_idxp = 0, *rmts_copy = 0; - vnet_lisp_add_del_adjacency_args_t _a, *a = &_a; - clib_memset (a, 0, sizeof (*a)); - - map = pool_elt_at_index (lcm->mapping_pool, mapping_index); - - if (map->local) - { - rmts_idxp = hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, mapping_index); - if (rmts_idxp) - { - rmts = - pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idxp[0]); - rmts_copy = vec_dup (rmts[0]); - - vec_foreach (remote_idxp, rmts_copy) - { - fei = hash_get (lcm->fwd_entry_by_mapping_index, remote_idxp[0]); - if (!fei) - continue; - - fwd = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]); - a->is_add = 0; - gid_address_copy (&a->leid, &fwd->leid); - gid_address_copy (&a->reid, &fwd->reid); - vnet_lisp_add_del_adjacency (a); - - if (!remove_only) - { - a->is_add = 1; - vnet_lisp_add_del_adjacency (a); - } - } - vec_free (rmts_copy); - } - } - else - { - fei = hash_get (lcm->fwd_entry_by_mapping_index, mapping_index); - if (!fei) - return; - - fwd = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]); - a->is_add = 0; - gid_address_copy (&a->leid, &fwd->leid); - gid_address_copy (&a->reid, &fwd->reid); - vnet_lisp_add_del_adjacency (a); - - if (!remove_only) - { - a->is_add = 1; - vnet_lisp_add_del_adjacency (a); - } - } -} - -static void -update_fwd_entries_by_locator_set (lisp_cp_main_t * lcm, - u32 ls_index, u8 remove_only) -{ - u32 i, *map_indexp; - u32 **eid_indexes; - - if (vec_len (lcm->locator_set_to_eids) <= ls_index) - return; - - eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, ls_index); - - for (i = 0; i < vec_len (eid_indexes[0]); i++) - { - map_indexp = vec_elt_at_index (eid_indexes[0], i); - update_adjacencies_by_map_index (lcm, map_indexp[0], remove_only); - } -} - -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]; - u8 removed; - - vec_foreach (itloc, a->locators) - { - removed = 0; - 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) - { - removed = 1; - remove_locator_from_locator_set (ls, locit, ls_index, loc_id); - } - else if (0 == loc->local && - !gid_address_cmp (&loc->address, &itloc->address)) - { - removed = 1; - remove_locator_from_locator_set (ls, locit, ls_index, loc_id); - } - - if (removed) - { - /* update fwd entries using this locator in DP */ - update_fwd_entries_by_locator_set (lcm, ls_index, - vec_len (ls->locator_indices) - == 0); - } - - 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); - clib_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; -} - -static void -lisp_cp_register_dst_port (vlib_main_t * vm) -{ - 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 */ ); -} - -static void -lisp_cp_unregister_dst_port (vlib_main_t * vm) -{ - udp_unregister_dst_port (vm, UDP_DST_PORT_lisp_cp, 0 /* is_ip4 */ ); - udp_unregister_dst_port (vm, UDP_DST_PORT_lisp_cp6, 1 /* is_ip4 */ ); -} - -/** - * lisp_cp_enable_l2_l3_ifaces - * - * Enable all l2 and l3 ifaces - */ -static void -lisp_cp_enable_l2_l3_ifaces (lisp_cp_main_t * lcm, u8 with_default_route) -{ - u32 vni, dp_table; - - /* *INDENT-OFF* */ - hash_foreach(vni, dp_table, lcm->table_id_by_vni, ({ - dp_add_del_iface(lcm, vni, /* is_l2 */ 0, /* is_add */1, - with_default_route); - })); - hash_foreach(vni, dp_table, lcm->bd_id_by_vni, ({ - dp_add_del_iface(lcm, vni, /* is_l2 */ 1, 1, - with_default_route); - })); - /* *INDENT-ON* */ -} - -static void -lisp_cp_disable_l2_l3_ifaces (lisp_cp_main_t * lcm) -{ - u32 **rmts; - - /* clear interface table */ - hash_free (lcm->fwd_entry_by_mapping_index); - pool_free (lcm->fwd_entry_pool); - /* Clear state tracking rmt-lcl fwd entries */ - /* *INDENT-OFF* */ - pool_foreach(rmts, lcm->lcl_to_rmt_adjacencies, - { - vec_free(rmts[0]); - }); - /* *INDENT-ON* */ - hash_free (lcm->lcl_to_rmt_adjs_by_lcl_idx); - pool_free (lcm->lcl_to_rmt_adjacencies); -} - -clib_error_t * -vnet_lisp_enable_disable (u8 is_enable) -{ - 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"); - } - - /* decide what to do based on mode */ - - if (lcm->flags & LISP_FLAG_XTR_MODE) - { - if (is_enable) - { - lisp_cp_register_dst_port (lcm->vlib_main); - lisp_cp_enable_l2_l3_ifaces (lcm, 1 /* with_default_route */ ); - } - else - { - lisp_cp_unregister_dst_port (lcm->vlib_main); - lisp_cp_disable_l2_l3_ifaces (lcm); - } - } - - if (lcm->flags & LISP_FLAG_PETR_MODE) - { - /* if in xTR mode, the LISP ports were already (un)registered above */ - if (!(lcm->flags & LISP_FLAG_XTR_MODE)) - { - if (is_enable) - lisp_cp_register_dst_port (lcm->vlib_main); - else - lisp_cp_unregister_dst_port (lcm->vlib_main); - } - } - - if (lcm->flags & LISP_FLAG_PITR_MODE) - { - if (is_enable) - { - /* install interfaces, but no default routes */ - lisp_cp_enable_l2_l3_ifaces (lcm, 0 /* with_default_route */ ); - } - else - { - lisp_cp_disable_l2_l3_ifaces (lcm); - } - } - - if (is_enable) - vnet_lisp_create_retry_process (lcm); - - /* update global flag */ - lcm->is_enabled = is_enable; - - return 0; -} - -u8 -vnet_lisp_enable_disable_status (void) -{ - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - return lcm->is_enabled; -} - -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; - } - - clib_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; -} - -int -vnet_lisp_map_register_set_ttl (u32 ttl) -{ - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - lcm->map_register_ttl = ttl; - return 0; -} - -u32 -vnet_lisp_map_register_get_ttl (void) -{ - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - return lcm->map_register_ttl; -} - -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; -} - -/* Statistics (not really errors) */ -#define foreach_lisp_cp_lookup_error \ -_(DROP, "drop") \ -_(MAP_REQUESTS_SENT, "map-request sent") \ -_(ARP_REPLY_TX, "ARP replies sent") \ -_(NDP_NEIGHBOR_ADVERTISEMENT_TX, \ - "neighbor advertisement 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_NEXT_ARP_NDP_REPLY_TX, - 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); - - clib_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, AF_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, AF_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, 1); - - 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); - b->flags = 0; - - /* 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; - clib_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, 1); - - 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; -} - -#define foreach_msmr \ - _(server) \ - _(resolver) - -#define _(name) \ -static int \ -elect_map_ ## name (lisp_cp_main_t * lcm) \ -{ \ - lisp_msmr_t *mr; \ - vec_foreach (mr, lcm->map_ ## name ## s) \ - { \ - if (!mr->is_down) \ - { \ - ip_address_copy (&lcm->active_map_ ##name, &mr->address); \ - lcm->do_map_ ## name ## _election = 0; \ - return 1; \ - } \ - } \ - return 0; \ -} -foreach_msmr -#undef _ - 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, AF_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, AF_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 vnet_crypto_alg_t -lisp_key_type_to_crypto_alg (lisp_key_type_t key_id) -{ - switch (key_id) - { - case HMAC_SHA_1_96: - return VNET_CRYPTO_ALG_HMAC_SHA1; - case HMAC_SHA_256_128: - return VNET_CRYPTO_ALG_HMAC_SHA256; - default: - clib_warning ("unsupported encryption key type: %d!", key_id); - break; - } - return VNET_CRYPTO_ALG_NONE; -} - -static vnet_crypto_op_id_t -lisp_key_type_to_crypto_op (lisp_key_type_t key_id) -{ - switch (key_id) - { - case HMAC_SHA_1_96: - return VNET_CRYPTO_OP_SHA1_HMAC; - case HMAC_SHA_256_128: - return VNET_CRYPTO_OP_SHA256_HMAC; - default: - clib_warning ("unsupported encryption key type: %d!", key_id); - break; - } - return VNET_CRYPTO_OP_NONE; -} - -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) -{ - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - 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); - vnet_crypto_op_t _op, *op = &_op; - vnet_crypto_key_index_t ki; - - vnet_crypto_op_init (op, lisp_key_type_to_crypto_op (key_id)); - op->len = msg_len; - op->digest = MREG_DATA (map_reg_hdr); - op->src = (u8 *) map_reg_hdr; - op->digest_len = 0; - op->iv = 0; - - ki = vnet_crypto_key_add (lcm->vlib_main, - lisp_key_type_to_crypto_alg (key_id), key, - vec_len (key)); - - op->key_index = ki; - - vnet_crypto_process_ops (lcm->vlib_main, op, 1); - vnet_crypto_key_del (lcm->vlib_main, ki); - - 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, 1); - - bi_res[0] = bi; - return b; -} - -#define _(name) \ -static int \ -get_egress_map_ ##name## _ip (lisp_cp_main_t * lcm, ip_address_t * ip) \ -{ \ - lisp_msmr_t *mr; \ - while (lcm->do_map_ ## name ## _election \ - | (0 == ip_fib_get_first_egress_ip_for_dst \ - (lcm, &lcm->active_map_ ##name, ip))) \ - { \ - if (0 == elect_map_ ## name (lcm)) \ - /* all map resolvers/servers are down */ \ - { \ - /* restart MR/MS checking by marking all of them up */ \ - vec_foreach (mr, lcm->map_ ## name ## s) mr->is_down = 0; \ - return -1; \ - } \ - } \ - return 0; \ -} - -foreach_msmr -#undef _ -/* CP output statistics */ -#define foreach_lisp_cp_output_error \ -_(MAP_REGISTERS_SENT, "map-registers sent") \ -_(MAP_REQUESTS_SENT, "map-requests sent") \ -_(RLOC_PROBES_SENT, "rloc-probes sent") -static char *lisp_cp_output_error_strings[] = { -#define _(sym,string) string, - foreach_lisp_cp_output_error -#undef _ -}; - -typedef enum -{ -#define _(sym,str) LISP_CP_OUTPUT_ERROR_##sym, - foreach_lisp_cp_output_error -#undef _ - LISP_CP_OUTPUT_N_ERROR, -} lisp_cp_output_error_t; - -static uword -lisp_cp_output (vlib_main_t * vm, vlib_node_runtime_t * node, - vlib_frame_t * from_frame) -{ - return 0; -} - -/* placeholder node used only for statistics */ -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (lisp_cp_output_node) = { - .function = lisp_cp_output, - .name = "lisp-cp-output", - .vector_size = sizeof (u32), - .format_trace = format_lisp_cp_input_trace, - .type = VLIB_NODE_TYPE_INTERNAL, - - .n_errors = LISP_CP_OUTPUT_N_ERROR, - .error_strings = lisp_cp_output_error_strings, - - .n_next_nodes = LISP_CP_INPUT_N_NEXT, - - .next_nodes = { - [LISP_CP_INPUT_NEXT_DROP] = "error-drop", - }, -}; -/* *INDENT-ON* */ - -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 (rloc) == AF_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; -} - -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, rloc_probes_sent = 0; - - /* *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); - rloc_probes_sent++; - } - }); - /* *INDENT-ON* */ - - vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index, - LISP_CP_OUTPUT_ERROR_RLOC_PROBES_SENT, - rloc_probes_sent); - return 0; -} - -static int -send_map_register (lisp_cp_main_t * lcm, u8 want_map_notif) -{ - pending_map_register_t *pmr; - u32 bi, map_registers_sent = 0; - vlib_buffer_t *b; - ip_address_t sloc; - vlib_frame_t *f; - u64 nonce = 0; - u32 next_index, *to_next; - mapping_t *records, *r, *group, *k; - - if (get_egress_map_server_ip (lcm, &sloc) < 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 */ - - group = 0; - vec_add1 (group, r[0]); - - /* group mappings that share common key */ - for (k = r + 1; k < vec_end (records); k++) - { - if (k->key_id != r->key_id) - continue; - - if (vec_is_equal (k->key, r->key)) - { - vec_add1 (group, k[0]); - k->key = 0; /* don't process this mapping again */ - } - } - - b = build_map_register (lcm, &sloc, &lcm->active_map_server, &nonce, - want_map_notif, group, key_id, key, &bi); - vec_free (group); - if (!b) - continue; - - vnet_buffer (b)->sw_if_index[VLIB_TX] = 0; - - next_index = (ip_addr_version (&lcm->active_map_server) == AF_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); - map_registers_sent++; - - pool_get (lcm->pending_map_registers_pool, pmr); - clib_memset (pmr, 0, sizeof (*pmr)); - pmr->time_to_expire = PENDING_MREG_EXPIRATION_TIME; - hash_set (lcm->map_register_messages_by_nonce, nonce, - pmr - lcm->pending_map_registers_pool); - } - free_map_register_records (records); - - vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index, - LISP_CP_OUTPUT_ERROR_MAP_REGISTERS_SENT, - map_registers_sent); - - 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; - } - - u8 pitr_mode = lcm->flags & LISP_FLAG_PITR_MODE; - - /* get locator-set for seid */ - if (!pitr_mode && gid_address_type (deid) != GID_ADDR_NSH) - { - 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 - { - if (pitr_mode) - { - if (lcm->pitr_map_index != ~0) - { - map = - pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index); - ls_index = map->locator_set_index; - } - else - { - return -1; - } - } - else - { - if (lcm->nsh_map_index == (u32) ~ 0) - { - clib_warning ("No locator-set defined for NSH!"); - return -1; - } - else - { - map = pool_elt_at_index (lcm->mapping_pool, lcm->nsh_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) == AF_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); - - vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index, - LISP_CP_OUTPUT_ERROR_MAP_REQUESTS_SENT, 1); - - 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); - clib_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, AF_IP4); - ip_address_set (dst, &ip4->dst_address, AF_IP4); - } - else - { - ip6 = hdr; - ip_address_set (src, &ip6->src_address, AF_IP6); - ip_address_set (dst, &ip6->dst_address, AF_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 == - AF_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_bd_from_buffer_eth (vlib_buffer_t * b) -{ - 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); - - return bd_config->bd_id; -} - -always_inline u32 -lisp_get_vni_from_buffer_eth (lisp_cp_main_t * lcm, vlib_buffer_t * b) -{ - uword *vnip; - u32 vni = ~0; - u32 bd = lisp_get_bd_from_buffer_eth (b); - - vnip = hash_get (lcm->vni_by_bd_id, bd); - if (vnip) - vni = vnip[0]; - else - clib_warning ("bridge domain %d is not mapped to any vni!", bd); - - return vni; -} - -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, - u16 type) -{ - ethernet_header_t *eh; - u32 vni = 0; - icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt; - - clib_memset (src, 0, sizeof (*src)); - clib_memset (dst, 0, sizeof (*dst)); - - gid_address_type (dst) = GID_ADDR_NO_ADDRESS; - gid_address_type (src) = GID_ADDR_NO_ADDRESS; - - 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_arp_header_t *ah; - - eh = vlib_buffer_get_current (b); - - if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_ARP) - { - ah = (ethernet_arp_header_t *) (((u8 *) eh) + sizeof (*eh)); - gid_address_type (dst) = GID_ADDR_ARP; - - if (clib_net_to_host_u16 (ah->opcode) - != ETHERNET_ARP_OPCODE_request) - { - clib_memset (&gid_address_arp_ndp_ip (dst), 0, - sizeof (ip_address_t)); - ip_addr_version (&gid_address_arp_ndp_ip (dst)) = AF_IP4; - gid_address_arp_ndp_bd (dst) = ~0; - return; - } - - gid_address_arp_bd (dst) = lisp_get_bd_from_buffer_eth (b); - clib_memcpy (&gid_address_arp_ip4 (dst), - &ah->ip4_over_ethernet[1].ip4, 4); - } - else - { - if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_IP6) - { - ip6_header_t *ip; - ip = (ip6_header_t *) (eh + 1); - - if (IP_PROTOCOL_ICMP6 == ip->protocol) - { - icmp6_neighbor_solicitation_or_advertisement_header_t *ndh; - ndh = ip6_next_header (ip); - if (ndh->icmp.type == ICMP6_neighbor_solicitation) - { - gid_address_type (dst) = GID_ADDR_NDP; - - /* check that source link layer address option is present */ - opt = (void *) (ndh + 1); - if ((opt->header.type != - ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address) - || (opt->header.n_data_u64s != 1)) - { - clib_memset (&gid_address_arp_ndp_ip (dst), 0, - sizeof (ip_address_t)); - ip_addr_version (&gid_address_arp_ndp_ip (dst)) = - AF_IP6; - gid_address_arp_ndp_bd (dst) = ~0; - gid_address_type (src) = GID_ADDR_NO_ADDRESS; - return; - } - - gid_address_ndp_bd (dst) = - lisp_get_bd_from_buffer_eth (b); - ip_address_set (&gid_address_arp_ndp_ip (dst), - &ndh->target_address, AF_IP6); - return; - } - } - } - - 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; - } - } - else if (LISP_AFI_LCAF == type) - { - lisp_nsh_hdr_t *nh; - eh = vlib_buffer_get_current (b); - - if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_NSH) - { - nh = (lisp_nsh_hdr_t *) (((u8 *) eh) + sizeof (*eh)); - u32 spi = clib_net_to_host_u32 (nh->spi_si << 8); - u8 si = (u8) clib_net_to_host_u32 (nh->spi_si); - gid_address_nsh_spi (dst) = spi; - gid_address_nsh_si (dst) = si; - - gid_address_type (dst) = GID_ADDR_NSH; - gid_address_type (src) = GID_ADDR_NSH; - } - } -} - -static uword -lisp_cp_lookup_inline (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * from_frame, int overlay) -{ - icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt; - u32 *from, *to_next, di, si; - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - u32 next_index; - uword n_left_from, n_left_to_next; - vnet_main_t *vnm = vnet_get_main (); - - from = vlib_frame_vector_args (from_frame); - n_left_from = from_frame->n_vectors; - next_index = node->cached_next_index; - - while (n_left_from > 0) - { - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - - while (n_left_from > 0 && n_left_to_next > 0) - { - u32 pi0, sw_if_index0, next0; - u64 mac0; - vlib_buffer_t *b0; - gid_address_t src, dst; - ethernet_arp_header_t *arp0; - ethernet_header_t *eth0; - vnet_hw_interface_t *hw_if0; - ethernet_header_t *eh0; - icmp6_neighbor_solicitation_or_advertisement_header_t *ndh; - ip6_header_t *ip0; - - pi0 = from[0]; - from += 1; - n_left_from -= 1; - to_next[0] = pi0; - to_next += 1; - n_left_to_next -= 1; - - b0 = vlib_get_buffer (vm, pi0); - - /* src/dst eid pair */ - get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst, overlay); - - if (gid_address_type (&dst) == GID_ADDR_ARP) - { - mac0 = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst); - if (GID_LOOKUP_MISS_L2 == mac0) - goto drop; - - /* send ARP reply */ - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; - vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0; - - hw_if0 = vnet_get_sup_hw_interface (vnm, sw_if_index0); - - eth0 = vlib_buffer_get_current (b0); - arp0 = (ethernet_arp_header_t *) (((u8 *) eth0) - + sizeof (*eth0)); - arp0->opcode = clib_host_to_net_u16 (ETHERNET_ARP_OPCODE_reply); - arp0->ip4_over_ethernet[1] = arp0->ip4_over_ethernet[0]; - mac_address_from_u64 (&arp0->ip4_over_ethernet[0].mac, mac0); - clib_memcpy (&arp0->ip4_over_ethernet[0].ip4, - &gid_address_arp_ip4 (&dst), 4); - - /* Hardware must be ethernet-like. */ - ASSERT (vec_len (hw_if0->hw_address) == 6); - - clib_memcpy (eth0->dst_address, eth0->src_address, 6); - clib_memcpy (eth0->src_address, hw_if0->hw_address, 6); - - b0->error = node->errors[LISP_CP_LOOKUP_ERROR_ARP_REPLY_TX]; - next0 = LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX; - goto enqueue; - } - else if (gid_address_type (&dst) == GID_ADDR_NDP) - { - mac0 = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst); - if (GID_LOOKUP_MISS_L2 == mac0) - goto drop; - - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; - vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0; - - eh0 = vlib_buffer_get_current (b0); - ip0 = (ip6_header_t *) (eh0 + 1); - ndh = ip6_next_header (ip0); - int bogus_length; - ip0->dst_address = ip0->src_address; - ip0->src_address = ndh->target_address; - ip0->hop_limit = 255; - opt = (void *) (ndh + 1); - opt->header.type = - ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address; - clib_memcpy (opt->ethernet_address, (u8 *) & mac0, 6); - ndh->icmp.type = ICMP6_neighbor_advertisement; - ndh->advertisement_flags = clib_host_to_net_u32 - (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED | - ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE); - ndh->icmp.checksum = 0; - ndh->icmp.checksum = - ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip0, - &bogus_length); - clib_memcpy (eh0->dst_address, eh0->src_address, 6); - clib_memcpy (eh0->src_address, (u8 *) & mac0, 6); - b0->error = - node->errors - [LISP_CP_LOOKUP_ERROR_NDP_NEIGHBOR_ADVERTISEMENT_TX]; - next0 = LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX; - goto enqueue; - } - - /* if we have remote mapping for destination already in map-cache - 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 */ ); - } - else - { - if (GID_ADDR_NSH != gid_address_type (&dst)) - { - si = gid_dictionary_lookup (&lcm->mapping_index_by_gid, - &src); - } - else - si = lcm->nsh_map_index; - - if (~0 != si) - { - dp_add_fwd_entry_from_mt (si, di); - } - } - } - else - { - /* send map-request */ - queue_map_request (&src, &dst, 0 /* smr_invoked */ , - 0 /* is_resend */ ); - } - - drop: - b0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP]; - next0 = LISP_CP_LOOKUP_NEXT_DROP; - enqueue: - if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) - { - lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, b0, - sizeof (*tr)); - - clib_memset (tr, 0, sizeof (*tr)); - if ((gid_address_type (&dst) == GID_ADDR_NDP) || - (gid_address_type (&dst) == GID_ADDR_ARP)) - clib_memcpy (&tr->dst_eid, &dst, sizeof (gid_address_t)); - else - 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_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, - n_left_to_next, pi0, next0); - } - - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - } - 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)); -} - -static uword -lisp_cp_lookup_nsh (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * from_frame) -{ - /* TODO decide if NSH should be propagated as LCAF or not */ - return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_LCAF)); -} - -/* *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", - [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output", - }, -}; -/* *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", - [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output", - }, -}; -/* *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", - [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output", - }, -}; -/* *INDENT-ON* */ - -/* *INDENT-OFF* */ -VLIB_REGISTER_NODE (lisp_cp_lookup_nsh_node) = { - .function = lisp_cp_lookup_nsh, - .name = "lisp-cp-lookup-nsh", - .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", - [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output", - }, -}; -/* *INDENT-ON* */ - -/* lisp_cp_input statistics */ -#define foreach_lisp_cp_input_error \ -_(DROP, "drop") \ -_(RLOC_PROBE_REQ_RECEIVED, "rloc-probe requests received") \ -_(RLOC_PROBE_REP_RECEIVED, "rloc-probe replies received") \ -_(MAP_NOTIFIES_RECEIVED, "map-notifies received") \ -_(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 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; - vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args; - clib_memset (adj_args, 0, sizeof (adj_args[0])); - - m = pool_elt_at_index (lcm->mapping_pool, mi); - - gid_address_copy (&adj_args->reid, &m->eid); - adj_args->is_add = 0; - if (vnet_lisp_add_del_adjacency (adj_args)) - clib_warning ("failed to del adjacency!"); - - TW (tw_timer_stop) (&lcm->wheel, m->timer_handle); - vnet_lisp_del_mapping (&m->eid, NULL); -} - -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; - m->timer_handle = TW (tw_timer_start) (&lcm->wheel, mi, 0, exp_clock_time); -} - -static void -process_expired_mapping (lisp_cp_main_t * lcm, u32 mi) -{ - int rv; - vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a; - mapping_t *m = pool_elt_at_index (lcm->mapping_pool, mi); - uword *fei; - fwd_entry_t *fe; - vlib_counter_t c; - u8 have_stats = 0; - - if (m->delete_after_expiration) - { - remove_expired_mapping (lcm, mi); - return; - } - - fei = hash_get (lcm->fwd_entry_by_mapping_index, mi); - if (!fei) - return; - - fe = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]); - - clib_memset (a, 0, sizeof (*a)); - a->rmt_eid = fe->reid; - if (fe->is_src_dst) - a->lcl_eid = fe->leid; - a->vni = gid_address_vni (&fe->reid); - - rv = vnet_lisp_gpe_get_fwd_stats (a, &c); - if (0 == rv) - have_stats = 1; - - if (m->almost_expired) - { - m->almost_expired = 0; /* reset flag */ - if (have_stats) - { - if (m->packets != c.packets) - { - /* mapping is in use, re-fetch */ - map_request_args_t mr_args; - clib_memset (&mr_args, 0, sizeof (mr_args)); - mr_args.seid = fe->leid; - mr_args.deid = fe->reid; - - send_map_request_thread_fn (&mr_args); - } - else - remove_expired_mapping (lcm, mi); - } - else - remove_expired_mapping (lcm, mi); - } - else - { - m->almost_expired = 1; - mapping_start_expiration_timer (lcm, mi, TIME_UNTIL_REFETCH_OR_DELETE); - - if (have_stats) - /* save counter */ - m->packets = c.packets; - else - m->delete_after_expiration = 1; - } -} - -static void -map_records_arg_free (map_records_arg_t * a) -{ - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - mapping_t *m; - vec_foreach (m, a->mappings) - { - vec_free (m->locators); - gid_address_free (&m->eid); - } - pool_put (lcm->map_records_args_pool[vlib_get_thread_index ()], 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; - u8 is_changed = 0; - - 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) - { - vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args; - clib_memset (m_args, 0, sizeof (m_args[0])); - gid_address_copy (&m_args->eid, &m->eid); - m_args->action = m->action; - m_args->authoritative = m->authoritative; - m_args->ttl = m->ttl; - m_args->is_static = 0; - - /* insert/update mappings cache */ - vnet_lisp_add_mapping (m_args, m->locators, &dst_map_index, &is_changed); - - if (dst_map_index == (u32) ~ 0) - continue; - - if (is_changed) - { - /* try to program forwarding only if mapping saved or updated */ - vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args; - clib_memset (adj_args, 0, sizeof (adj_args[0])); - - gid_address_copy (&adj_args->leid, &pmr->src); - gid_address_copy (&adj_args->reid, &m->eid); - adj_args->is_add = 1; - - if (vnet_lisp_add_del_adjacency (adj_args)) - clib_warning ("failed to add adjacency!"); - } - - if ((u32) ~ 0 != m->ttl) - mapping_start_expiration_timer (lcm, dst_map_index, - (m->ttl == 0) ? 0 : MAPPING_TIMEOUT); - } - - /* 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: - a->is_free = 1; - return 0; -} - -static int -is_auth_data_valid (map_notify_hdr_t * h, u32 msg_len, - lisp_key_type_t key_id, u8 * key) -{ - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - u8 *auth_data = 0; - u16 auth_data_len; - int result; - vnet_crypto_op_t _op, *op = &_op; - vnet_crypto_key_index_t ki; - u8 out[EVP_MAX_MD_SIZE] = { 0, }; - - 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 */ - clib_memset (MNOTIFY_DATA (h), 0, auth_data_len); - - vnet_crypto_op_init (op, lisp_key_type_to_crypto_op (key_id)); - op->len = msg_len; - op->digest = out; - op->src = (u8 *) h; - op->digest_len = 0; - op->iv = 0; - - ki = vnet_crypto_key_add (lcm->vlib_main, - lisp_key_type_to_crypto_alg (key_id), key, - vec_len (key)); - - op->key_index = ki; - - vnet_crypto_process_ops (lcm->vlib_main, op, 1); - vnet_crypto_key_del (lcm->vlib_main, ki); - - result = memcmp (out, 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; - } - - a->is_free = 1; - pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]); - hash_unset (lcm->map_register_messages_by_nonce, a->nonce); - - /* reset map-notify counter */ - lcm->expired_map_registers = 0; -} - -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; - - clib_memset (&m, 0, sizeof (m)); - - /* parse record eid */ - for (i = 0; i < count; i++) - { - locators = 0; - 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 * -map_record_args_get () -{ - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - map_records_arg_t *rec; - - /* Cleanup first */ - /* *INDENT-OFF* */ - pool_foreach (rec, lcm->map_records_args_pool[vlib_get_thread_index()], ({ - if (rec->is_free) - map_records_arg_free (rec); - })); - /* *INDENT-ON* */ - - pool_get (lcm->map_records_args_pool[vlib_get_thread_index ()], rec); - return rec; -} - -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; - - a = map_record_args_get (); - clib_memset (a, 0, sizeof (*a)); - mnotif_hdr = vlib_buffer_get_current (b); - vlib_buffer_pull (b, sizeof (*mnotif_hdr)); - clib_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 " - "0x%lx!", 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, 1); - - 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); - clib_memset (&src, 0, sizeof (src)); - - if (!ip_fib_get_first_egress_ip_for_dst (lcm, dst, &src)) - { - clib_warning ("can't find interface 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) == AF_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; -} - -static void -find_ip_header (vlib_buffer_t * b, u8 ** ip_hdr) -{ - const i32 start = vnet_buffer (b)->l3_hdr_offset; - if (start < 0 && start < -sizeof (b->pre_data)) - { - *ip_hdr = 0; - return; - } - - *ip_hdr = b->data + start; - if ((u8 *) * ip_hdr > (u8 *) vlib_buffer_get_current (b)) - *ip_hdr = 0; -} - -void -process_map_request (vlib_main_t * vm, vlib_node_runtime_t * node, - lisp_cp_main_t * lcm, vlib_buffer_t * b) -{ - u8 *ip_hdr = 0; - 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, rloc_probe_recv = 0; - gid_address_t *itr_rlocs = 0; - - mreq_hdr = vlib_buffer_get_current (b); - if (!MREQ_SMR (mreq_hdr) && !MREQ_RLOC_PROBE (mreq_hdr)) - { - clib_warning - ("Only SMR Map-Requests and RLOC probe supported for now!"); - return; - } - - vlib_buffer_pull (b, sizeof (*mreq_hdr)); - nonce = MREQ_NONCE (mreq_hdr); - - /* 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) - goto done; - - /* parse eid records and send SMR-invoked map-requests */ - for (i = 0; i < MREQ_REC_COUNT (mreq_hdr); i++) - { - clib_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)) - { - find_ip_header (b, &ip_hdr); - if (!ip_hdr) - { - clib_warning ("Cannot find the IP header!"); - goto done; - } - rloc_probe_recv++; - clib_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: - vlib_node_increment_counter (vm, node->node_index, - LISP_CP_INPUT_ERROR_RLOC_PROBE_REQ_RECEIVED, - rloc_probe_recv); - vec_free (itr_rlocs); -} - -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; - - a = map_record_args_get (); - clib_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); - if (!vlib_buffer_has_space (b, sizeof (*mrep_hdr))) - { - map_records_arg_free (a); - return 0; - } - vlib_buffer_pull (b, sizeof (*mrep_hdr)); - - for (i = 0; i < MREP_REC_COUNT (mrep_hdr); i++) - { - clib_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, rloc_probe_rep_recv = 0, - map_notifies_recv = 0; - 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) - { - if (a->is_rloc_probe) - rloc_probe_rep_recv++; - queue_map_reply_for_processing (a); - } - break; - case LISP_MAP_REQUEST: - process_map_request (vm, node, lcm, b0); - break; - case LISP_MAP_NOTIFY: - a = parse_map_notify (b0); - if (a) - { - map_notifies_recv++; - 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); - } - vlib_node_increment_counter (vm, node->node_index, - LISP_CP_INPUT_ERROR_RLOC_PROBE_REP_RECEIVED, - rloc_probe_rep_recv); - vlib_node_increment_counter (vm, node->node_index, - LISP_CP_INPUT_ERROR_MAP_NOTIFIES_RECEIVED, - map_notifies_recv); - 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; - vlib_thread_main_t *vtm = vlib_get_thread_main (); - u32 num_threads; - - 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->flags = 0; - lcm->pitr_map_index = ~0; - lcm->petr_map_index = ~0; - clib_memset (&lcm->active_map_resolver, 0, - sizeof (lcm->active_map_resolver)); - clib_memset (&lcm->active_map_server, 0, sizeof (lcm->active_map_server)); - - gid_dictionary_init (&lcm->mapping_index_by_gid); - lcm->do_map_resolver_election = 1; - lcm->do_map_server_election = 1; - lcm->map_request_mode = MR_MODE_DST_ONLY; - - num_threads = 1 /* main thread */ + vtm->n_threads; - vec_validate (lcm->map_records_args_pool, num_threads - 1); - - /* default vrf mapped to vni 0 */ - hash_set (lcm->table_id_by_vni, 0, 0); - hash_set (lcm->vni_by_table_id, 0, 0); - - TW (tw_timer_wheel_init) (&lcm->wheel, 0 /* no callback */ , - 1e-3 /* timer period 1ms */ , - ~0 /* max expirations per call */ ); - lcm->nsh_map_index = ~0; - lcm->map_register_ttl = MAP_REGISTER_DEFAULT_TTL; - lcm->max_expired_map_registers = MAX_EXPIRED_MAP_REGISTERS_DEFAULT; - lcm->expired_map_registers = 0; - lcm->transport_protocol = LISP_TRANSPORT_PROTOCOL_UDP; - lcm->flags |= LISP_FLAG_XTR_MODE; - return 0; -} - -static int -lisp_stats_api_fill (lisp_cp_main_t * lcm, lisp_gpe_main_t * lgm, - lisp_api_stats_t * stat, lisp_stats_key_t * key, - u32 stats_index) -{ - vlib_counter_t v; - vlib_combined_counter_main_t *cm = &lgm->counters; - lisp_gpe_fwd_entry_key_t fwd_key; - const lisp_gpe_tunnel_t *lgt; - fwd_entry_t *fe; - - clib_memset (stat, 0, sizeof (*stat)); - clib_memset (&fwd_key, 0, sizeof (fwd_key)); - - fe = pool_elt_at_index (lcm->fwd_entry_pool, key->fwd_entry_index); - ASSERT (fe != 0); - - gid_to_dp_address (&fe->reid, &stat->deid); - gid_to_dp_address (&fe->leid, &stat->seid); - stat->vni = gid_address_vni (&fe->reid); - - lgt = lisp_gpe_tunnel_get (key->tunnel_index); - stat->loc_rloc = lgt->key->lcl; - stat->rmt_rloc = lgt->key->rmt; - - vlib_get_combined_counter (cm, stats_index, &v); - stat->counters = v; - return 1; -} - -lisp_api_stats_t * -vnet_lisp_get_stats (void) -{ - lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main (); - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - lisp_api_stats_t *stats = 0, stat; - lisp_stats_key_t *key; - u32 index; - - /* *INDENT-OFF* */ - hash_foreach_mem (key, index, lgm->lisp_stats_index_by_key, - { - if (lisp_stats_api_fill (lcm, lgm, &stat, key, index)) - vec_add1 (stats, stat); - }); - /* *INDENT-ON* */ - - return stats; -} - -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_pool, 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 int -update_pending_map_register (pending_map_register_t * r, f64 dt, u8 * del_all) -{ - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - lisp_msmr_t *ms; - del_all[0] = 0; - - r->time_to_expire -= dt; - - if (r->time_to_expire < 0) - { - lcm->expired_map_registers++; - - if (lcm->expired_map_registers >= lcm->max_expired_map_registers) - { - ms = get_map_server (&lcm->active_map_server); - if (!ms) - { - clib_warning ("Map server %U not found - probably deleted " - "by the user recently.", format_ip_address, - &lcm->active_map_server); - } - else - { - clib_warning ("map server %U is unreachable, ignoring", - format_ip_address, &lcm->active_map_server); - - /* mark current map server unavailable so it won't be - * elected next time */ - ms->is_down = 1; - ms->last_update = vlib_time_now (lcm->vlib_main); - } - - elect_map_server (lcm); - - /* indication for deleting all pending map registers */ - del_all[0] = 1; - lcm->expired_map_registers = 0; - return 0; - } - else - { - /* delete pending map register */ - return 0; - } - } - return 1; -} - -static void -update_map_register (lisp_cp_main_t * lcm, f64 dt) -{ - u32 *to_be_removed = 0, *pmr_index; - static f64 time_left = QUICK_MAP_REGISTER_INTERVAL; - static u64 mreg_sent_counter = 0; - - pending_map_register_t *pmr; - u8 del_all = 0; - - if (!lcm->is_enabled || !lcm->map_registering) - return; - - /* *INDENT-OFF* */ - pool_foreach (pmr, lcm->pending_map_registers_pool, - ({ - if (!update_pending_map_register (pmr, dt, &del_all)) - { - if (del_all) - break; - vec_add1 (to_be_removed, pmr - lcm->pending_map_registers_pool); - } - })); - /* *INDENT-ON* */ - - if (del_all) - { - /* delete all pending map register messages so they won't - * trigger another map server election.. */ - pool_free (lcm->pending_map_registers_pool); - hash_free (lcm->map_register_messages_by_nonce); - - /* ..and trigger registration against next map server (if any) */ - time_left = 0; - } - else - { - vec_foreach (pmr_index, to_be_removed) - pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]); - } - - vec_free (to_be_removed); - - 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); - - expired = TW (tw_timer_expire_timers_vec) (&lcm->wheel, - vlib_time_now (vm), expired); - if (vec_len (expired) > 0) - { - u32 *mi = 0; - vec_foreach (mi, expired) - { - process_expired_mapping (lcm, mi[0]); - } - _vec_len (expired) = 0; - } - } - - /* unreachable */ - return 0; -} - -vnet_api_error_t -vnet_lisp_stats_enable_disable (u8 enable) -{ - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - - if (vnet_lisp_enable_disable_status () == 0) - return VNET_API_ERROR_LISP_DISABLED; - - if (enable) - lcm->flags |= LISP_FLAG_STATS_ENABLED; - else - lcm->flags &= ~LISP_FLAG_STATS_ENABLED; - - return 0; -} - -u8 -vnet_lisp_stats_enable_disable_state (void) -{ - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - - if (vnet_lisp_enable_disable_status () == 0) - return VNET_API_ERROR_LISP_DISABLED; - - return lcm->flags & LISP_FLAG_STATS_ENABLED; -} - -void -vnet_lisp_create_retry_process (lisp_cp_main_t * lcm) -{ - if (lcm->retry_service_index) - return; - - lcm->retry_service_index = vlib_process_create (vlib_get_main (), - "lisp-retry-service", - send_map_resolver_service, - 16 /* stack_bytes */ ); -} - -u32 -vnet_lisp_set_transport_protocol (u8 protocol) -{ - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - - if (protocol < LISP_TRANSPORT_PROTOCOL_UDP || - protocol > LISP_TRANSPORT_PROTOCOL_API) - return VNET_API_ERROR_INVALID_ARGUMENT; - - lcm->transport_protocol = protocol; - return 0; -} - -lisp_transport_protocol_t -vnet_lisp_get_transport_protocol (void) -{ - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - return lcm->transport_protocol; -} - -int -vnet_lisp_enable_disable_xtr_mode (u8 is_enabled) -{ - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - u8 pitr_mode = lcm->flags & LISP_FLAG_PITR_MODE; - u8 xtr_mode = lcm->flags & LISP_FLAG_XTR_MODE; - u8 petr_mode = lcm->flags & LISP_FLAG_PETR_MODE; - - if (pitr_mode && is_enabled) - return VNET_API_ERROR_INVALID_ARGUMENT; - - if (is_enabled && xtr_mode) - return 0; - if (!is_enabled && !xtr_mode) - return 0; - - if (is_enabled) - { - if (!petr_mode) - { - lisp_cp_register_dst_port (lcm->vlib_main); - } - lisp_cp_enable_l2_l3_ifaces (lcm, 1 /* with_default_route */ ); - lcm->flags |= LISP_FLAG_XTR_MODE; - } - else - { - if (!petr_mode) - { - lisp_cp_unregister_dst_port (lcm->vlib_main); - } - lisp_cp_disable_l2_l3_ifaces (lcm); - lcm->flags &= ~LISP_FLAG_XTR_MODE; - } - return 0; -} - -int -vnet_lisp_enable_disable_pitr_mode (u8 is_enabled) -{ - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - u8 xtr_mode = lcm->flags & LISP_FLAG_XTR_MODE; - u8 pitr_mode = lcm->flags & LISP_FLAG_PITR_MODE; - - if (xtr_mode && is_enabled) - return VNET_API_ERROR_INVALID_VALUE; - - if (is_enabled && pitr_mode) - return 0; - if (!is_enabled && !pitr_mode) - return 0; - - if (is_enabled) - { - /* create iface, no default route */ - lisp_cp_enable_l2_l3_ifaces (lcm, 0 /* with_default_route */ ); - lcm->flags |= LISP_FLAG_PITR_MODE; - } - else - { - lisp_cp_disable_l2_l3_ifaces (lcm); - lcm->flags &= ~LISP_FLAG_PITR_MODE; - } - return 0; -} - -int -vnet_lisp_enable_disable_petr_mode (u8 is_enabled) -{ - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - u8 xtr_mode = lcm->flags & LISP_FLAG_XTR_MODE; - u8 petr_mode = lcm->flags & LISP_FLAG_PETR_MODE; - - if (is_enabled && petr_mode) - return 0; - if (!is_enabled && !petr_mode) - return 0; - - if (is_enabled) - { - if (!xtr_mode) - { - lisp_cp_register_dst_port (lcm->vlib_main); - } - lcm->flags |= LISP_FLAG_PETR_MODE; - } - else - { - if (!xtr_mode) - { - lisp_cp_unregister_dst_port (lcm->vlib_main); - } - lcm->flags &= ~LISP_FLAG_PETR_MODE; - } - return 0; -} - -u8 -vnet_lisp_get_xtr_mode (void) -{ - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - return (lcm->flags & LISP_FLAG_XTR_MODE); -} - -u8 -vnet_lisp_get_pitr_mode (void) -{ - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - return (lcm->flags & LISP_FLAG_PITR_MODE); -} - -u8 -vnet_lisp_get_petr_mode (void) -{ - lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); - return (lcm->flags & LISP_FLAG_PETR_MODE); -} - -VLIB_INIT_FUNCTION (lisp_cp_init); - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |