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authorNeale Ranns <nranns@cisco.com>2020-09-21 08:17:51 +0000
committerDamjan Marion <dmarion@me.com>2020-09-22 16:01:29 +0000
commit2b202bc4b2d870d76bfe6fb1906ae62e253cec72 (patch)
treeb05011f96b8d9d080647323e4609af0fac90b612 /src/vnet/lisp-cp/control.c
parentb468773aa4164bf52e0751fdf780f67248037cc0 (diff)
lisp: Move to plugin
Type: refactor Change-Id: I54df533a8f863c4e49742903cf2457f18b4fc506 Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/lisp-cp/control.c')
-rw-r--r--src/vnet/lisp-cp/control.c5033
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:
- */