/* * 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 #include #include #include #include typedef struct { u8 is_resend; gid_address_t seid; gid_address_t deid; u8 smr_invoked; } map_request_args_t; static int queue_map_request (gid_address_t * seid, gid_address_t * deid, u8 smr_invoked, u8 is_resend); ip_interface_address_t * ip_interface_get_first_interface_address (ip_lookup_main_t * lm, u32 sw_if_index, u8 loop) { vnet_main_t *vnm = vnet_get_main (); vnet_sw_interface_t *swif = vnet_get_sw_interface (vnm, sw_if_index); if (loop && swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED) sw_if_index = swif->unnumbered_sw_if_index; u32 ia = (vec_len ((lm)->if_address_pool_index_by_sw_if_index) > (sw_if_index)) ? vec_elt ((lm)->if_address_pool_index_by_sw_if_index, (sw_if_index)) : (u32) ~ 0; return pool_elt_at_index ((lm)->if_address_pool, ia); } void * ip_interface_get_first_address (ip_lookup_main_t * lm, u32 sw_if_index, u8 version) { ip_interface_address_t *ia; ia = ip_interface_get_first_interface_address (lm, sw_if_index, 1); if (!ia) return 0; return ip_interface_address_get_address (lm, ia); } int ip_interface_get_first_ip_address (lisp_cp_main_t * lcm, u32 sw_if_index, u8 version, ip_address_t * result) { ip_lookup_main_t *lm; void *addr; lm = (version == IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main; addr = ip_interface_get_first_address (lm, sw_if_index, version); if (!addr) return 0; ip_address_set (result, addr, version); return 1; } static u32 ip_fib_lookup_with_table (lisp_cp_main_t * lcm, u32 fib_index, ip_address_t * dst) { if (ip_addr_version (dst) == IP4) return ip4_fib_lookup_with_table (lcm->im4, fib_index, &ip_addr_v4 (dst), 0); else return ip6_fib_lookup_with_table (lcm->im6, fib_index, &ip_addr_v6 (dst)); } u32 ip_fib_get_egress_iface_for_dst_with_lm (lisp_cp_main_t * lcm, ip_address_t * dst, ip_lookup_main_t * lm) { u32 adj_index; ip_adjacency_t *adj; adj_index = ip_fib_lookup_with_table (lcm, 0, dst); adj = ip_get_adjacency (lm, adj_index); if (adj == 0) return ~0; /* we only want outgoing routes */ if (adj->lookup_next_index != IP_LOOKUP_NEXT_ARP && adj->lookup_next_index != IP_LOOKUP_NEXT_REWRITE) return ~0; return adj->rewrite_header.sw_if_index; } /** * 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) { ip_lookup_main_t *lm; lm = ip_addr_version (dst) == IP4 ? &lcm->im4->lookup_main : &lcm->im6->lookup_main; return ip_fib_get_egress_iface_for_dst_with_lm (lcm, dst, lm); } /** * Find first IP of the interface that would be used to egress towards dst. * Returns 1 if the address is found 0 otherwise. */ int ip_fib_get_first_egress_ip_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst, ip_address_t * result) { u32 si; ip_lookup_main_t *lm; void *addr = 0; u8 ipver; ASSERT (result != 0); ipver = ip_addr_version (dst); lm = (ipver == IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main; si = ip_fib_get_egress_iface_for_dst_with_lm (lcm, dst, lm); if ((u32) ~ 0 == si) return 0; /* find the first ip address */ addr = ip_interface_get_first_address (lm, si, ipver); if (0 == addr) return 0; ip_address_set (result, addr, ipver); return 1; } static int dp_add_del_iface (lisp_cp_main_t * lcm, u32 vni, u8 is_l2, u8 is_add) { uword *dp_table, *intf; vnet_lisp_gpe_add_del_iface_args_t _ai, *ai = &_ai; 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; } } intf = hash_get (is_l2 ? lcm->l2_dp_intf_by_vni : lcm->dp_intf_by_vni, vni); /* enable/disable data-plane interface */ if (is_add) { /* create interface */ if (!intf) { ai->is_add = 1; ai->vni = vni; ai->is_l2 = is_l2; ai->dp_table = dp_table[0]; vnet_lisp_gpe_add_del_iface (ai, 0); /* keep track of vnis for which interfaces have been created */ hash_set (lcm->dp_intf_by_vni, vni, 1); } } else { if (intf == 0) { clib_warning ("interface for vni %d doesn't exist!", vni); return VNET_API_ERROR_INVALID_VALUE; } ai->is_add = 0; ai->vni = vni; ai->dp_table = dp_table[0]; vnet_lisp_gpe_add_del_iface (ai, 0); hash_unset (lcm->dp_intf_by_vni, vni); } return 0; } static void dp_del_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index) { vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a; fwd_entry_t *fe = 0; uword *feip = 0; memset (a, 0, sizeof (*a)); feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index); if (!feip) return; fe = pool_elt_at_index (lcm->fwd_entry_pool, feip[0]); /* delete dp fwd entry */ u32 sw_if_index; a->is_add = 0; a->locator_pairs = fe->locator_pairs; a->vni = gid_address_vni (&a->rmt_eid); gid_address_copy (&a->rmt_eid, &fe->deid); vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index); /* delete entry in fwd table */ hash_unset (lcm->fwd_entry_by_mapping_index, dst_map_index); vec_free (fe->locator_pairs); pool_put (lcm->fwd_entry_pool, fe); } /** * Finds first remote locator with best (lowest) priority that has a local * peer locator with an underlying route to it. * */ static u32 get_locator_pairs (lisp_cp_main_t * lcm, mapping_t * lcl_map, mapping_t * rmt_map, locator_pair_t ** locator_pairs) { u32 i, limitp = 0, li, found = 0, esi; locator_set_t *rmt_ls, *lcl_ls; ip_address_t _lcl_addr, *lcl_addr = &_lcl_addr; locator_t *lp, *rmt = 0; uword *checked = 0; locator_pair_t pair; rmt_ls = pool_elt_at_index (lcm->locator_set_pool, rmt_map->locator_set_index); lcl_ls = pool_elt_at_index (lcm->locator_set_pool, lcl_map->locator_set_index); if (!rmt_ls || vec_len (rmt_ls->locator_indices) == 0) return 0; while (1) { rmt = 0; /* find unvisited remote locator with best priority */ for (i = 0; i < vec_len (rmt_ls->locator_indices); i++) { if (0 != hash_get (checked, i)) continue; li = vec_elt (rmt_ls->locator_indices, i); lp = pool_elt_at_index (lcm->locator_pool, li); /* we don't support non-IP locators for now */ if (gid_address_type (&lp->address) != GID_ADDR_IP_PREFIX) continue; if ((found && lp->priority == limitp) || (!found && lp->priority >= limitp)) { rmt = lp; /* don't search for locators with lower priority and don't * check this locator again*/ limitp = lp->priority; hash_set (checked, i, 1); break; } } /* check if a local locator with a route to remote locator exists */ if (rmt != 0) { /* find egress sw_if_index for rmt locator */ esi = ip_fib_get_egress_iface_for_dst (lcm, &gid_address_ip (&rmt->address)); if ((u32) ~ 0 == esi) continue; for (i = 0; i < vec_len (lcl_ls->locator_indices); i++) { li = vec_elt (lcl_ls->locator_indices, i); locator_t *sl = pool_elt_at_index (lcm->locator_pool, li); /* found local locator with the needed sw_if_index */ if (sl->sw_if_index == esi) { /* and it has an address */ if (0 == ip_interface_get_first_ip_address (lcm, sl->sw_if_index, gid_address_ip_version (&rmt->address), lcl_addr)) continue; memset (&pair, 0, sizeof (pair)); ip_address_copy (&pair.rmt_loc, &gid_address_ip (&rmt->address)); ip_address_copy (&pair.lcl_loc, lcl_addr); pair.weight = rmt->weight; vec_add1 (locator_pairs[0], pair); found = 1; } } } else break; } hash_free (checked); return found; } static void dp_add_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index) { vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a; mapping_t *src_map, *dst_map; u32 sw_if_index; uword *feip = 0, *dpid; fwd_entry_t *fe; u8 type; memset (a, 0, sizeof (*a)); /* remove entry if it already exists */ feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index); if (feip) dp_del_fwd_entry (lcm, src_map_index, dst_map_index); src_map = pool_elt_at_index (lcm->mapping_pool, src_map_index); dst_map = pool_elt_at_index (lcm->mapping_pool, dst_map_index); /* insert data plane forwarding entry */ a->is_add = 1; gid_address_copy (&a->rmt_eid, &dst_map->eid); a->vni = gid_address_vni (&a->rmt_eid); /* get vrf or bd_index associated to vni */ type = gid_address_type (&dst_map->eid); if (GID_ADDR_IP_PREFIX == type) { dpid = hash_get (lcm->table_id_by_vni, a->vni); if (!dpid) { clib_warning ("vni %d not associated to a vrf!", a->vni); return; } a->table_id = dpid[0]; } else if (GID_ADDR_MAC == type) { dpid = hash_get (lcm->bd_id_by_vni, a->vni); if (!dpid) { clib_warning ("vni %d not associated to a bridge domain !", a->vni); return; } a->bd_id = dpid[0]; } /* find best locator pair that 1) verifies LISP policy 2) are connected */ if (0 == get_locator_pairs (lcm, src_map, dst_map, &a->locator_pairs)) { /* negative entry */ a->is_negative = 1; a->action = dst_map->action; } /* TODO remove */ u8 ipver = ip_prefix_version (&gid_address_ippref (&a->rmt_eid)); a->decap_next_index = (ipver == IP4) ? LISP_GPE_INPUT_NEXT_IP4_INPUT : LISP_GPE_INPUT_NEXT_IP6_INPUT; vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index); /* add tunnel to fwd entry table XXX check return value from DP insertion */ pool_get (lcm->fwd_entry_pool, fe); fe->locator_pairs = a->locator_pairs; gid_address_copy (&fe->deid, &a->rmt_eid); hash_set (lcm->fwd_entry_by_mapping_index, dst_map_index, fe - lcm->fwd_entry_pool); } /** * Add/remove mapping to/from map-cache. Overwriting not allowed. */ int vnet_lisp_map_cache_add_del (vnet_lisp_add_del_mapping_args_t * a, u32 * map_index_result) { lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); u32 mi, *map_indexp, map_index, i; mapping_t *m, *old_map; u32 **eid_indexes; mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid); old_map = mi != ~0 ? pool_elt_at_index (lcm->mapping_pool, mi) : 0; if (a->is_add) { /* TODO check if overwriting and take appropriate actions */ if (mi != GID_LOOKUP_MISS && !gid_address_cmp (&old_map->eid, &a->eid)) { clib_warning ("eid %U found in the eid-table", format_gid_address, &a->eid); return VNET_API_ERROR_VALUE_EXIST; } pool_get (lcm->mapping_pool, m); gid_address_copy (&m->eid, &a->eid); m->locator_set_index = a->locator_set_index; m->ttl = a->ttl; m->action = a->action; m->local = a->local; m->is_static = a->is_static; map_index = m - lcm->mapping_pool; gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, map_index, 1); if (pool_is_free_index (lcm->locator_set_pool, a->locator_set_index)) { clib_warning ("Locator set with index %d doesn't exist", a->locator_set_index); return VNET_API_ERROR_INVALID_VALUE; } /* add eid to list of eids supported by locator-set */ vec_validate (lcm->locator_set_to_eids, a->locator_set_index); eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, a->locator_set_index); vec_add1 (eid_indexes[0], map_index); if (a->local) { /* mark as local */ vec_add1 (lcm->local_mappings_indexes, map_index); } map_index_result[0] = map_index; } else { if (mi == GID_LOOKUP_MISS) { clib_warning ("eid %U not found in the eid-table", format_gid_address, &a->eid); return VNET_API_ERROR_INVALID_VALUE; } /* clear locator-set to eids binding */ eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, a->locator_set_index); for (i = 0; i < vec_len (eid_indexes[0]); i++) { map_indexp = vec_elt_at_index (eid_indexes[0], i); if (map_indexp[0] == mi) break; } vec_del1 (eid_indexes[0], i); /* remove local mark if needed */ m = pool_elt_at_index (lcm->mapping_pool, mi); if (m->local) { u32 k, *lm_indexp; for (k = 0; k < vec_len (lcm->local_mappings_indexes); k++) { lm_indexp = vec_elt_at_index (lcm->local_mappings_indexes, k); if (lm_indexp[0] == mi) break; } vec_del1 (lcm->local_mappings_indexes, k); } /* remove mapping from dictionary */ gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, 0, 0); gid_address_free (&m->eid); pool_put_index (lcm->mapping_pool, mi); } return 0; } /** * Add/update/delete mapping to/in/from map-cache. */ int vnet_lisp_add_del_local_mapping (vnet_lisp_add_del_mapping_args_t * a, u32 * map_index_result) { uword *dp_table = 0; u32 vni; u8 type; lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); if (vnet_lisp_enable_disable_status () == 0) { clib_warning ("LISP is disabled!"); return VNET_API_ERROR_LISP_DISABLED; } vni = gid_address_vni (&a->eid); type = gid_address_type (&a->eid); if (GID_ADDR_IP_PREFIX == type) dp_table = hash_get (lcm->table_id_by_vni, vni); else if (GID_ADDR_MAC == type) dp_table = hash_get (lcm->bd_id_by_vni, vni); if (!dp_table) { clib_warning ("vni %d not associated to a %s!", vni, GID_ADDR_IP_PREFIX == type ? "vrf" : "bd"); return VNET_API_ERROR_INVALID_VALUE; } /* store/remove mapping from map-cache */ return vnet_lisp_map_cache_add_del (a, map_index_result); } static clib_error_t * lisp_add_del_local_eid_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); unformat_input_t _line_input, *line_input = &_line_input; u8 is_add = 1; gid_address_t eid; gid_address_t *eids = 0; clib_error_t *error = 0; u8 *locator_set_name = 0; u32 locator_set_index = 0, map_index = 0; uword *p; vnet_lisp_add_del_mapping_args_t _a, *a = &_a; int rv = 0; u32 vni = 0; memset (&eid, 0, sizeof (eid)); memset (a, 0, sizeof (*a)); /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) return 0; while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "add")) is_add = 1; else if (unformat (line_input, "del")) is_add = 0; else if (unformat (line_input, "eid %U", unformat_gid_address, &eid)) ; else if (unformat (line_input, "vni %d", &vni)) gid_address_vni (&eid) = vni; else if (unformat (line_input, "locator-set %_%v%_", &locator_set_name)) { p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name); if (!p) { error = clib_error_return (0, "locator-set %s doesn't exist", locator_set_name); goto done; } locator_set_index = p[0]; } else { error = unformat_parse_error (line_input); goto done; } } /* XXX treat batch configuration */ if (GID_ADDR_SRC_DST == gid_address_type (&eid)) { error = clib_error_return (0, "src/dst is not supported for local EIDs!"); goto done; } gid_address_copy (&a->eid, &eid); a->is_add = is_add; a->locator_set_index = locator_set_index; a->local = 1; rv = vnet_lisp_add_del_local_mapping (a, &map_index); if (0 != rv) { error = clib_error_return (0, "failed to %s local mapping!", is_add ? "add" : "delete"); } done: vec_free (eids); if (locator_set_name) vec_free (locator_set_name); gid_address_free (&a->eid); return error; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (lisp_add_del_local_eid_command) = { .path = "lisp eid-table", .short_help = "lisp eid-table add/del [vni ] eid " "locator-set ", .function = lisp_add_del_local_eid_command_fn, }; /* *INDENT-ON* */ int vnet_lisp_eid_table_map (u32 vni, u32 dp_id, u8 is_l2, u8 is_add) { lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); uword *dp_idp, *vnip, **dp_table_by_vni, **vni_by_dp_table; if (vnet_lisp_enable_disable_status () == 0) { clib_warning ("LISP is disabled!"); return -1; } dp_table_by_vni = is_l2 ? &lcm->bd_id_by_vni : &lcm->table_id_by_vni; vni_by_dp_table = is_l2 ? &lcm->vni_by_bd_id : &lcm->vni_by_table_id; if (!is_l2 && (vni == 0 || dp_id == 0)) { clib_warning ("can't add/del default vni-vrf mapping!"); return -1; } dp_idp = hash_get (dp_table_by_vni[0], vni); vnip = hash_get (vni_by_dp_table[0], dp_id); if (is_add) { if (dp_idp || vnip) { clib_warning ("vni %d or vrf %d already used in vrf/vni " "mapping!", vni, dp_id); return -1; } hash_set (dp_table_by_vni[0], vni, dp_id); hash_set (vni_by_dp_table[0], dp_id, vni); /* create dp iface */ dp_add_del_iface (lcm, vni, is_l2, 1); } else { if (!dp_idp || !vnip) { clib_warning ("vni %d or vrf %d not used in any vrf/vni! " "mapping!", vni, dp_id); return -1; } hash_unset (dp_table_by_vni[0], vni); hash_unset (vni_by_dp_table[0], dp_id); /* remove dp iface */ dp_add_del_iface (lcm, vni, is_l2, 0); } return 0; } static clib_error_t * lisp_eid_table_map_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { u8 is_add = 1, is_l2 = 0; u32 vni = 0, dp_id = 0; unformat_input_t _line_input, *line_input = &_line_input; /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) return 0; while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "del")) is_add = 0; else if (unformat (line_input, "vni %d", &vni)) ; else if (unformat (line_input, "vrf %d", &dp_id)) ; else if (unformat (line_input, "bd %d", &dp_id)) is_l2 = 1; else { return unformat_parse_error (line_input); } } vnet_lisp_eid_table_map (vni, dp_id, is_l2, is_add); return 0; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (lisp_eid_table_map_command) = { .path = "lisp eid-table map", .short_help = "lisp eid-table map [del] vni vrf | bd ", .function = lisp_eid_table_map_command_fn, }; /* *INDENT-ON* */ /* return 0 if the two locator sets are identical 1 otherwise */ static u8 compare_locators (lisp_cp_main_t * lcm, u32 * old_ls_indexes, locator_t * new_locators) { u32 i, old_li; locator_t *old_loc, *new_loc; if (vec_len (old_ls_indexes) != vec_len (new_locators)) return 1; for (i = 0; i < vec_len (new_locators); i++) { old_li = vec_elt (old_ls_indexes, i); old_loc = pool_elt_at_index (lcm->locator_pool, old_li); new_loc = vec_elt_at_index (new_locators, i); if (locator_cmp (old_loc, new_loc)) return 1; } return 0; } /** * Adds/removes/updates mapping. Does not program forwarding. * * @param eid end-host identifier * @param rlocs vector of remote locators * @param action action for negative map-reply * @param is_add add mapping if non-zero, delete otherwise * @param res_map_index the map-index that was created/updated/removed. It is * set to ~0 if no action is taken. * @param is_static used for distinguishing between statically learned remote mappings and mappings obtained from MR * @return return code */ int vnet_lisp_add_del_mapping (gid_address_t * eid, locator_t * rlocs, u8 action, u8 authoritative, u32 ttl, u8 is_add, u8 is_static, u32 * res_map_index) { vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args; vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args; lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); u32 mi, ls_index = 0, dst_map_index; mapping_t *old_map; if (vnet_lisp_enable_disable_status () == 0) { clib_warning ("LISP is disabled!"); return VNET_API_ERROR_LISP_DISABLED; } if (res_map_index) res_map_index[0] = ~0; memset (m_args, 0, sizeof (m_args[0])); memset (ls_args, 0, sizeof (ls_args[0])); ls_args->locators = rlocs; mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, eid); old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0; if (is_add) { /* overwrite: if mapping already exists, decide if locators should be * updated and be done */ if (old_map && gid_address_cmp (&old_map->eid, eid) == 0) { if (!is_static && (old_map->is_static || old_map->local)) { /* do not overwrite local or static remote mappings */ clib_warning ("mapping %U rejected due to collision with local " "or static remote mapping!", format_gid_address, &eid); return 0; } locator_set_t *old_ls; /* update mapping attributes */ old_map->action = action; old_map->authoritative = authoritative; old_map->ttl = ttl; old_ls = pool_elt_at_index (lcm->locator_set_pool, old_map->locator_set_index); if (compare_locators (lcm, old_ls->locator_indices, ls_args->locators)) { /* set locator-set index to overwrite */ ls_args->is_add = 1; ls_args->index = old_map->locator_set_index; vnet_lisp_add_del_locator_set (ls_args, 0); if (res_map_index) res_map_index[0] = mi; } } /* new mapping */ else { ls_args->is_add = 1; ls_args->index = ~0; vnet_lisp_add_del_locator_set (ls_args, &ls_index); /* add mapping */ gid_address_copy (&m_args->eid, eid); m_args->is_add = 1; m_args->action = action; m_args->locator_set_index = ls_index; m_args->is_static = is_static; vnet_lisp_map_cache_add_del (m_args, &dst_map_index); if (res_map_index) res_map_index[0] = dst_map_index; } } else { if (old_map == 0 || gid_address_cmp (&old_map->eid, eid) != 0) { clib_warning ("cannot delete mapping for eid %U", format_gid_address, eid); return -1; } m_args->is_add = 0; gid_address_copy (&m_args->eid, eid); m_args->locator_set_index = old_map->locator_set_index; /* delete mapping associated from map-cache */ vnet_lisp_map_cache_add_del (m_args, 0); ls_args->is_add = 0; ls_args->index = old_map->locator_set_index; /* delete locator set */ vnet_lisp_add_del_locator_set (ls_args, 0); /* return old mapping index */ if (res_map_index) res_map_index[0] = mi; } /* success */ return 0; } int vnet_lisp_clear_all_remote_adjacencies (void) { int rv = 0; u32 mi, *map_indices = 0, *map_indexp; lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); vnet_lisp_add_del_mapping_args_t _dm_args, *dm_args = &_dm_args; vnet_lisp_add_del_locator_set_args_t _ls, *ls = &_ls; /* *INDENT-OFF* */ pool_foreach_index (mi, lcm->mapping_pool, ({ vec_add1 (map_indices, mi); })); /* *INDENT-ON* */ vec_foreach (map_indexp, map_indices) { mapping_t *map = pool_elt_at_index (lcm->mapping_pool, map_indexp[0]); if (!map->local) { dp_del_fwd_entry (lcm, 0, map_indexp[0]); dm_args->is_add = 0; gid_address_copy (&dm_args->eid, &map->eid); dm_args->locator_set_index = map->locator_set_index; /* delete mapping associated to fwd entry */ vnet_lisp_map_cache_add_del (dm_args, 0); ls->is_add = 0; ls->local = 0; ls->index = map->locator_set_index; /* delete locator set */ rv = vnet_lisp_add_del_locator_set (ls, 0); if (rv != 0) goto cleanup; } } cleanup: if (map_indices) vec_free (map_indices); return rv; } /** * Adds adjacency or removes forwarding entry associated to remote mapping. * Note that adjacencies are not stored, they only result in forwarding entries * being created. */ int lisp_add_del_adjacency (lisp_cp_main_t * lcm, gid_address_t * local_eid, gid_address_t * remote_eid, u8 is_add) { u32 local_mi, remote_mi = ~0; if (vnet_lisp_enable_disable_status () == 0) { clib_warning ("LISP is disabled!"); return VNET_API_ERROR_LISP_DISABLED; } remote_mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, remote_eid); if (GID_LOOKUP_MISS == remote_mi) { clib_warning ("Remote eid %U not found. Cannot add adjacency!", format_gid_address, remote_eid); return -1; } if (is_add) { /* TODO 1) check if src/dst 2) once we have src/dst working, use it in * delete*/ /* check if source eid has an associated mapping. If pitr mode is on, * just use the pitr's mapping */ local_mi = lcm->lisp_pitr ? lcm->pitr_map_index : gid_dictionary_lookup (&lcm->mapping_index_by_gid, local_eid); if (GID_LOOKUP_MISS == local_mi) { clib_warning ("Local eid %U not found. Cannot add adjacency!", format_gid_address, local_eid); return -1; } /* update forwarding */ dp_add_fwd_entry (lcm, local_mi, remote_mi); } else dp_del_fwd_entry (lcm, 0, remote_mi); return 0; } int vnet_lisp_add_del_adjacency (vnet_lisp_add_del_adjacency_args_t * a) { lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); return lisp_add_del_adjacency (lcm, &a->seid, &a->deid, a->is_add); } /** * Handler for add/del remote mapping CLI. * * @param vm vlib context * @param input input from user * @param cmd cmd * @return pointer to clib error structure */ static clib_error_t * lisp_add_del_remote_mapping_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { clib_error_t *error = 0; unformat_input_t _line_input, *line_input = &_line_input; u8 is_add = 1, del_all = 0; locator_t rloc, *rlocs = 0, *curr_rloc = 0; gid_address_t eid; u8 eid_set = 0; u32 vni, action = ~0, p, w; int rv; /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) return 0; memset (&eid, 0, sizeof (eid)); memset (&rloc, 0, sizeof (rloc)); while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "del-all")) del_all = 1; else if (unformat (line_input, "del")) is_add = 0; else if (unformat (line_input, "add")) ; else if (unformat (line_input, "eid %U", unformat_gid_address, &eid)) eid_set = 1; else if (unformat (line_input, "vni %u", &vni)) { gid_address_vni (&eid) = vni; } else if (unformat (line_input, "p %d w %d", &p, &w)) { if (!curr_rloc) { clib_warning ("No RLOC configured for setting priority/weight!"); goto done; } curr_rloc->priority = p; curr_rloc->weight = w; } else if (unformat (line_input, "rloc %U", unformat_ip_address, &gid_address_ip (&rloc.address))) { vec_add1 (rlocs, rloc); curr_rloc = &rlocs[vec_len (rlocs) - 1]; } else if (unformat (line_input, "action %U", unformat_negative_mapping_action, &action)) ; else { clib_warning ("parse error"); goto done; } } if (!eid_set) { clib_warning ("missing eid!"); goto done; } if (!del_all) { if (is_add && (~0 == action) && 0 == vec_len (rlocs)) { clib_warning ("no action set for negative map-reply!"); goto done; } } else { vnet_lisp_clear_all_remote_adjacencies (); goto done; } /* TODO build src/dst with seid */ /* if it's a delete, clean forwarding */ if (!is_add) { lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); rv = lisp_add_del_adjacency (lcm, 0, &eid, /* is_add */ 0); if (rv) { goto done; } } /* add as static remote mapping, i.e., not authoritative and infinite * ttl */ rv = vnet_lisp_add_del_mapping (&eid, rlocs, action, 0, ~0, is_add, 1 /* is_static */ , 0); if (rv) clib_warning ("failed to %s remote mapping!", is_add ? "add" : "delete"); done: vec_free (rlocs); unformat_free (line_input); return error; } VLIB_CLI_COMMAND (lisp_add_del_remote_mapping_command) = { .path = "lisp remote-mapping",.short_help = "lisp remote-mapping add|del [del-all] vni " "eid [action ] rloc p w " "[rloc ... ]",.function = lisp_add_del_remote_mapping_command_fn,}; /** * Handler for add/del adjacency CLI. */ static clib_error_t * lisp_add_del_adjacency_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { clib_error_t *error = 0; unformat_input_t _line_input, *line_input = &_line_input; vnet_lisp_add_del_adjacency_args_t _a, *a = &_a; u8 is_add = 1; locator_t rloc, *rlocs = 0; ip_prefix_t *deid_ippref, *seid_ippref; gid_address_t seid, deid; u8 *dmac = gid_address_mac (&deid); u8 *smac = gid_address_mac (&seid); u8 deid_set = 0, seid_set = 0; u8 *s = 0; u32 vni, action = ~0; int rv; /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) return 0; memset (&deid, 0, sizeof (deid)); memset (&seid, 0, sizeof (seid)); memset (&rloc, 0, sizeof (rloc)); seid_ippref = &gid_address_ippref (&seid); deid_ippref = &gid_address_ippref (&deid); while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "del")) is_add = 0; else if (unformat (line_input, "add")) ; else if (unformat (line_input, "deid %U", unformat_ip_prefix, deid_ippref)) { gid_address_type (&deid) = GID_ADDR_IP_PREFIX; deid_set = 1; } else if (unformat (line_input, "deid %U", unformat_mac_address, dmac)) { gid_address_type (&deid) = GID_ADDR_MAC; deid_set = 1; } else if (unformat (line_input, "vni %u", &vni)) { gid_address_vni (&seid) = vni; gid_address_vni (&deid) = vni; } else if (unformat (line_input, "seid %U", unformat_ip_prefix, seid_ippref)) { gid_address_type (&seid) = GID_ADDR_IP_PREFIX; seid_set = 1; } else if (unformat (line_input, "seid %U", unformat_mac_address, smac)) { gid_address_type (&seid) = GID_ADDR_MAC; seid_set = 1; } else { clib_warning ("parse error"); goto done; } } if (!deid_set) { clib_warning ("missing deid!"); goto done; } if (GID_ADDR_IP_PREFIX == gid_address_type (&deid)) { /* if seid not set, make sure the ip version is the same as that * of the deid. This ensures the seid to be configured will be * either 0/0 or ::/0 */ if (!seid_set) ip_prefix_version (seid_ippref) = ip_prefix_version (deid_ippref); if (is_add && (ip_prefix_version (deid_ippref) != ip_prefix_version (seid_ippref))) { clib_warning ("source and destination EIDs are not" " in the same IP family!"); goto done; } } if (is_add && (~0 == action) && 0 == vec_len (rlocs)) { clib_warning ("no action set for negative map-reply!"); goto done; } memset (a, 0, sizeof (a[0])); gid_address_copy (&a->seid, &deid); gid_address_copy (&a->deid, &seid); a->is_add = is_add; rv = vnet_lisp_add_del_adjacency (a); if (rv) clib_warning ("failed to %s adjacency!", is_add ? "add" : "delete"); done: unformat_free (line_input); if (s) vec_free (s); return error; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (lisp_add_del_adjacency_command) = { .path = "lisp adjacency", .short_help = "lisp adjacency add|del vni " "deid seid [action ] rloc [rloc ... ]", .function = lisp_add_del_adjacency_command_fn, }; /* *INDENT-ON* */ static clib_error_t * lisp_show_map_resolvers_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { map_resolver_t *mr; lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); vec_foreach (mr, lcm->map_resolvers) { vlib_cli_output (vm, "%U", format_ip_address, &mr->address); } return 0; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (lisp_show_map_resolvers_command) = { .path = "show lisp map-resolvers", .short_help = "show lisp map-resolvers", .function = lisp_show_map_resolvers_command_fn, }; /* *INDENT-ON* */ int vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add) { lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); u32 locator_set_index = ~0; mapping_t *m; uword *p; if (vnet_lisp_enable_disable_status () == 0) { clib_warning ("LISP is disabled!"); return VNET_API_ERROR_LISP_DISABLED; } p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name); if (!p) { clib_warning ("locator-set %v doesn't exist", locator_set_name); return -1; } locator_set_index = p[0]; if (is_add) { pool_get (lcm->mapping_pool, m); m->locator_set_index = locator_set_index; m->local = 1; lcm->pitr_map_index = m - lcm->mapping_pool; /* enable pitr mode */ lcm->lisp_pitr = 1; } else { /* remove pitr mapping */ pool_put_index (lcm->mapping_pool, lcm->pitr_map_index); /* disable pitr mode */ lcm->lisp_pitr = 0; } return 0; } static clib_error_t * lisp_pitr_set_locator_set_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { u8 locator_name_set = 0; u8 *locator_set_name = 0; u8 is_add = 1; unformat_input_t _line_input, *line_input = &_line_input; clib_error_t *error = 0; int rv = 0; /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) return 0; while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "ls %_%v%_", &locator_set_name)) locator_name_set = 1; else if (unformat (line_input, "disable")) is_add = 0; else return clib_error_return (0, "parse error"); } if (!locator_name_set) { clib_warning ("No locator set specified!"); goto done; } rv = vnet_lisp_pitr_set_locator_set (locator_set_name, is_add); if (0 != rv) { error = clib_error_return (0, "failed to %s pitr!", is_add ? "add" : "delete"); } done: if (locator_set_name) vec_free (locator_set_name); return error; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (lisp_pitr_set_locator_set_command) = { .path = "lisp pitr", .short_help = "lisp pitr [disable] ls ", .function = lisp_pitr_set_locator_set_command_fn, }; /* *INDENT-ON* */ static clib_error_t * lisp_show_pitr_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); mapping_t *m; locator_set_t *ls; u8 *tmp_str = 0; vlib_cli_output (vm, "%=20s%=16s", "pitr", lcm->lisp_pitr ? "locator-set" : ""); if (!lcm->lisp_pitr) { vlib_cli_output (vm, "%=20s", "disable"); return 0; } if (~0 == lcm->pitr_map_index) { tmp_str = format (0, "N/A"); } else { m = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index); if (~0 != m->locator_set_index) { ls = pool_elt_at_index (lcm->locator_set_pool, m->locator_set_index); tmp_str = format (0, "%s", ls->name); } else { tmp_str = format (0, "N/A"); } } vec_add1 (tmp_str, 0); vlib_cli_output (vm, "%=20s%=16s", "enable", tmp_str); vec_free (tmp_str); return 0; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (lisp_show_pitr_command) = { .path = "show lisp pitr", .short_help = "Show pitr", .function = lisp_show_pitr_command_fn, }; /* *INDENT-ON* */ static u8 * format_eid_entry (u8 * s, va_list * args) { vnet_main_t *vnm = va_arg (*args, vnet_main_t *); lisp_cp_main_t *lcm = va_arg (*args, lisp_cp_main_t *); mapping_t *mapit = va_arg (*args, mapping_t *); locator_set_t *ls = va_arg (*args, locator_set_t *); gid_address_t *gid = &mapit->eid; u32 ttl = mapit->ttl; u8 aut = mapit->authoritative; u32 *loc_index; u8 first_line = 1; u8 *loc; u8 *type = ls->local ? format (0, "local(%s)", ls->name) : format (0, "remote"); if (vec_len (ls->locator_indices) == 0) { s = format (s, "%-35U%-30s%-20u%-u", format_gid_address, gid, type, ttl, aut); } else { vec_foreach (loc_index, ls->locator_indices) { locator_t *l = pool_elt_at_index (lcm->locator_pool, loc_index[0]); if (l->local) loc = format (0, "%U", format_vnet_sw_if_index_name, vnm, l->sw_if_index); else loc = format (0, "%U", format_ip_address, &gid_address_ip (&l->address)); if (first_line) { s = format (s, "%-35U%-20s%-30v%-20u%-u\n", format_gid_address, gid, type, loc, ttl, aut); first_line = 0; } else s = format (s, "%55s%v\n", "", loc); } } return s; } static clib_error_t * lisp_show_eid_table_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); mapping_t *mapit; unformat_input_t _line_input, *line_input = &_line_input; u32 mi; gid_address_t eid; u8 print_all = 1; u8 filter = 0; memset (&eid, 0, sizeof (eid)); /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) return 0; while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "eid %U", unformat_gid_address, &eid)) print_all = 0; else if (unformat (line_input, "local")) filter = 1; else if (unformat (line_input, "remote")) filter = 2; else return clib_error_return (0, "parse error: '%U'", format_unformat_error, line_input); } vlib_cli_output (vm, "%-35s%-20s%-30s%-20s%-s", "EID", "type", "locators", "ttl", "autoritative"); if (print_all) { /* *INDENT-OFF* */ pool_foreach (mapit, lcm->mapping_pool, ({ locator_set_t * ls = pool_elt_at_index (lcm->locator_set_pool, mapit->locator_set_index); if (filter && !((1 == filter && ls->local) || (2 == filter && !ls->local))) { continue; } vlib_cli_output (vm, "%U", format_eid_entry, lcm->vnet_main, lcm, mapit, ls); })); /* *INDENT-ON* */ } else { mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &eid); if ((u32) ~ 0 == mi) return 0; mapit = pool_elt_at_index (lcm->mapping_pool, mi); locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool, mapit->locator_set_index); if (filter && !((1 == filter && ls->local) || (2 == filter && !ls->local))) { return 0; } vlib_cli_output (vm, "%U,", format_eid_entry, lcm->vnet_main, lcm, mapit, ls); } return 0; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (lisp_cp_show_eid_table_command) = { .path = "show lisp eid-table", .short_help = "Shows EID table", .function = lisp_show_eid_table_command_fn, }; /* *INDENT-ON* */ /* cleans locator to locator-set data and removes locators not part of * any locator-set */ static void clean_locator_to_locator_set (lisp_cp_main_t * lcm, u32 lsi) { u32 i, j, *loc_indexp, *ls_indexp, **ls_indexes, *to_be_deleted = 0; locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool, lsi); for (i = 0; i < vec_len (ls->locator_indices); i++) { loc_indexp = vec_elt_at_index (ls->locator_indices, i); ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets, loc_indexp[0]); for (j = 0; j < vec_len (ls_indexes[0]); j++) { ls_indexp = vec_elt_at_index (ls_indexes[0], j); if (ls_indexp[0] == lsi) break; } /* delete index for removed locator-set */ vec_del1 (ls_indexes[0], j); /* delete locator if it's part of no locator-set */ if (vec_len (ls_indexes[0]) == 0) { pool_put_index (lcm->locator_pool, loc_indexp[0]); vec_add1 (to_be_deleted, i); } } if (to_be_deleted) { for (i = 0; i < vec_len (to_be_deleted); i++) { loc_indexp = vec_elt_at_index (to_be_deleted, i); vec_del1 (ls->locator_indices, loc_indexp[0]); } vec_free (to_be_deleted); } } static inline uword * get_locator_set_index (vnet_lisp_add_del_locator_set_args_t * a, uword * p) { lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); ASSERT (a != NULL); ASSERT (p != NULL); /* find locator-set */ if (a->local) { p = hash_get_mem (lcm->locator_set_index_by_name, a->name); } else { *p = a->index; } return p; } static inline int is_locator_in_locator_set (lisp_cp_main_t * lcm, locator_set_t * ls, locator_t * loc) { locator_t *itloc; u32 *locit; ASSERT (ls != NULL); ASSERT (loc != NULL); vec_foreach (locit, ls->locator_indices) { itloc = pool_elt_at_index (lcm->locator_pool, locit[0]); if ((ls->local && itloc->sw_if_index == loc->sw_if_index) || (!ls->local && !gid_address_cmp (&itloc->address, &loc->address))) { clib_warning ("Duplicate locator"); return VNET_API_ERROR_VALUE_EXIST; } } return 0; } static inline void remove_locator_from_locator_set (locator_set_t * ls, u32 * locit, u32 ls_index, u32 loc_id) { lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); u32 **ls_indexes = NULL; ASSERT (ls != NULL); ASSERT (locit != NULL); ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets, locit[0]); pool_put_index (lcm->locator_pool, locit[0]); vec_del1 (ls->locator_indices, loc_id); vec_del1 (ls_indexes[0], ls_index); } int vnet_lisp_add_del_locator (vnet_lisp_add_del_locator_set_args_t * a, locator_set_t * ls, u32 * ls_result) { lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); locator_t *loc = NULL, *itloc = NULL; uword _p = (u32) ~ 0, *p = &_p; u32 loc_index = ~0, ls_index = ~0, *locit = NULL, **ls_indexes = NULL; u32 loc_id = ~0; int ret = 0; ASSERT (a != NULL); if (vnet_lisp_enable_disable_status () == 0) { clib_warning ("LISP is disabled!"); return VNET_API_ERROR_LISP_DISABLED; } p = get_locator_set_index (a, p); if (!p) { clib_warning ("locator-set %v doesn't exist", a->name); return VNET_API_ERROR_INVALID_ARGUMENT; } if (ls == 0) { ls = pool_elt_at_index (lcm->locator_set_pool, p[0]); if (!ls) { clib_warning ("locator-set %d to be overwritten doesn't exist!", p[0]); return VNET_API_ERROR_INVALID_ARGUMENT; } } if (a->is_add) { if (ls_result) ls_result[0] = p[0]; /* allocate locators */ vec_foreach (itloc, a->locators) { ret = is_locator_in_locator_set (lcm, ls, itloc); if (0 != ret) { return ret; } pool_get (lcm->locator_pool, loc); loc[0] = itloc[0]; loc_index = loc - lcm->locator_pool; vec_add1 (ls->locator_indices, loc_index); vec_validate (lcm->locator_to_locator_sets, loc_index); ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets, loc_index); vec_add1 (ls_indexes[0], ls_index); } } else { ls_index = p[0]; itloc = a->locators; loc_id = 0; vec_foreach (locit, ls->locator_indices) { loc = pool_elt_at_index (lcm->locator_pool, locit[0]); if (loc->local && loc->sw_if_index == itloc->sw_if_index) { remove_locator_from_locator_set (ls, locit, ls_index, loc_id); } if (0 == loc->local && !gid_address_cmp (&loc->address, &itloc->address)) { remove_locator_from_locator_set (ls, locit, ls_index, loc_id); } loc_id++; } } return 0; } int vnet_lisp_add_del_locator_set (vnet_lisp_add_del_locator_set_args_t * a, u32 * ls_result) { lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); locator_set_t *ls; uword _p = (u32) ~ 0, *p = &_p; u32 ls_index; u32 **eid_indexes; int ret = 0; if (vnet_lisp_enable_disable_status () == 0) { clib_warning ("LISP is disabled!"); return VNET_API_ERROR_LISP_DISABLED; } if (a->is_add) { p = get_locator_set_index (a, p); /* overwrite */ if (p && p[0] != (u32) ~ 0) { ls = pool_elt_at_index (lcm->locator_set_pool, p[0]); if (!ls) { clib_warning ("locator-set %d to be overwritten doesn't exist!", p[0]); return -1; } /* clean locator to locator-set vectors and remove locators if * they're not part of another locator-set */ clean_locator_to_locator_set (lcm, p[0]); /* remove locator indices from locator set */ vec_free (ls->locator_indices); ls_index = p[0]; if (ls_result) ls_result[0] = p[0]; } /* new locator-set */ else { pool_get (lcm->locator_set_pool, ls); memset (ls, 0, sizeof (*ls)); ls_index = ls - lcm->locator_set_pool; if (a->local) { ls->name = vec_dup (a->name); if (!lcm->locator_set_index_by_name) lcm->locator_set_index_by_name = hash_create_vec ( /* size */ 0, sizeof (ls->name [0]), sizeof (uword)); hash_set_mem (lcm->locator_set_index_by_name, ls->name, ls_index); /* mark as local locator-set */ vec_add1 (lcm->local_locator_set_indexes, ls_index); } ls->local = a->local; if (ls_result) ls_result[0] = ls_index; } ret = vnet_lisp_add_del_locator (a, ls, NULL); if (0 != ret) { return ret; } } else { p = get_locator_set_index (a, p); if (!p) { clib_warning ("locator-set %v doesn't exists", a->name); return -1; } ls = pool_elt_at_index (lcm->locator_set_pool, p[0]); if (!ls) { clib_warning ("locator-set with index %d doesn't exists", p[0]); return -1; } if (lcm->mreq_itr_rlocs == p[0]) { clib_warning ("Can't delete the locator-set used to constrain " "the itr-rlocs in map-requests!"); return -1; } if (vec_len (lcm->locator_set_to_eids) != 0) { eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, p[0]); if (vec_len (eid_indexes[0]) != 0) { clib_warning ("Can't delete a locator that supports a mapping!"); return -1; } } /* clean locator to locator-sets data */ clean_locator_to_locator_set (lcm, p[0]); if (ls->local) { u32 it, lsi; vec_foreach_index (it, lcm->local_locator_set_indexes) { lsi = vec_elt (lcm->local_locator_set_indexes, it); if (lsi == p[0]) { vec_del1 (lcm->local_locator_set_indexes, it); break; } } hash_unset_mem (lcm->locator_set_index_by_name, ls->name); } vec_free (ls->name); vec_free (ls->locator_indices); pool_put (lcm->locator_set_pool, ls); } return 0; } clib_error_t * vnet_lisp_enable_disable (u8 is_enable) { u32 vni, dp_table; clib_error_t *error = 0; lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); vnet_lisp_gpe_enable_disable_args_t _a, *a = &_a; a->is_en = is_enable; error = vnet_lisp_gpe_enable_disable (a); if (error) { return clib_error_return (0, "failed to %s data-plane!", a->is_en ? "enable" : "disable"); } if (is_enable) { /* enable all l2 and l3 ifaces */ /* *INDENT-OFF* */ hash_foreach(vni, dp_table, lcm->table_id_by_vni, ({ dp_add_del_iface(lcm, vni, 0, 1); })); hash_foreach(vni, dp_table, lcm->bd_id_by_vni, ({ dp_add_del_iface(lcm, vni, /* is_l2 */ 1, 1); })); /* *INDENT-ON* */ } else { /* clear interface table */ hash_free (lcm->dp_intf_by_vni); hash_free (lcm->fwd_entry_by_mapping_index); pool_free (lcm->fwd_entry_pool); } /* update global flag */ lcm->is_enabled = is_enable; return 0; } static clib_error_t * lisp_enable_disable_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { unformat_input_t _line_input, *line_input = &_line_input; u8 is_enabled = 0; u8 is_set = 0; /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) return 0; while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "enable")) { is_set = 1; is_enabled = 1; } else if (unformat (line_input, "disable")) is_set = 1; else { return clib_error_return (0, "parse error: '%U'", format_unformat_error, line_input); } } if (!is_set) return clib_error_return (0, "state not set"); return vnet_lisp_enable_disable (is_enabled); } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (lisp_cp_enable_disable_command) = { .path = "lisp", .short_help = "lisp [enable|disable]", .function = lisp_enable_disable_command_fn, }; /* *INDENT-ON* */ u8 vnet_lisp_enable_disable_status (void) { lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); return lcm->is_enabled; } static u8 * format_lisp_status (u8 * s, va_list * args) { lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); return format (s, "%s", lcm->is_enabled ? "enabled" : "disabled"); } static clib_error_t * lisp_show_status_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { u8 *msg = 0; msg = format (msg, "feature: %U\ngpe: %U\n", format_lisp_status, format_vnet_lisp_gpe_status); vlib_cli_output (vm, "%v", msg); vec_free (msg); return 0; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (lisp_show_status_command) = { .path = "show lisp status", .short_help = "show lisp status", .function = lisp_show_status_command_fn, }; /* *INDENT-ON* */ static clib_error_t * lisp_show_eid_table_map_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { hash_pair_t *p; lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); vlib_cli_output (vm, "%=10s%=10s", "VNI", "VRF"); /* *INDENT-OFF* */ hash_foreach_pair (p, lcm->table_id_by_vni, ({ vlib_cli_output (vm, "%=10d%=10d", p->key, p->value[0]); })); /* *INDENT-ON* */ return 0; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (lisp_show_eid_table_map_command) = { .path = "show lisp eid-table map", .short_help = "show lisp eid-table vni to vrf mappings", .function = lisp_show_eid_table_map_command_fn, }; /* *INDENT-ON* */ static clib_error_t * lisp_add_del_locator_set_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { lisp_gpe_main_t *lgm = &lisp_gpe_main; vnet_main_t *vnm = lgm->vnet_main; unformat_input_t _line_input, *line_input = &_line_input; u8 is_add = 1; clib_error_t *error = 0; u8 *locator_set_name = 0; locator_t locator, *locators = 0; vnet_lisp_add_del_locator_set_args_t _a, *a = &_a; u32 ls_index = 0; int rv = 0; memset (&locator, 0, sizeof (locator)); memset (a, 0, sizeof (a[0])); /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) return 0; while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "add %_%v%_", &locator_set_name)) is_add = 1; else if (unformat (line_input, "del %_%v%_", &locator_set_name)) is_add = 0; else if (unformat (line_input, "iface %U p %d w %d", unformat_vnet_sw_interface, vnm, &locator.sw_if_index, &locator.priority, &locator.weight)) { locator.local = 1; vec_add1 (locators, locator); } else { error = unformat_parse_error (line_input); goto done; } } a->name = locator_set_name; a->locators = locators; a->is_add = is_add; a->local = 1; rv = vnet_lisp_add_del_locator_set (a, &ls_index); if (0 != rv) { error = clib_error_return (0, "failed to %s locator-set!", is_add ? "add" : "delete"); } done: vec_free (locators); if (locator_set_name) vec_free (locator_set_name); return error; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (lisp_cp_add_del_locator_set_command) = { .path = "lisp locator-set", .short_help = "lisp locator-set add/del [iface " "p w ]", .function = lisp_add_del_locator_set_command_fn, }; /* *INDENT-ON* */ static clib_error_t * lisp_add_del_locator_in_set_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { lisp_gpe_main_t *lgm = &lisp_gpe_main; vnet_main_t *vnm = lgm->vnet_main; unformat_input_t _line_input, *line_input = &_line_input; u8 is_add = 1; clib_error_t *error = 0; u8 *locator_set_name = 0; u8 locator_set_name_set = 0; locator_t locator, *locators = 0; vnet_lisp_add_del_locator_set_args_t _a, *a = &_a; u32 ls_index = 0; memset (&locator, 0, sizeof (locator)); memset (a, 0, sizeof (a[0])); /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) return 0; while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "add")) is_add = 1; else if (unformat (line_input, "del")) is_add = 0; else if (unformat (line_input, "locator-set %_%v%_", &locator_set_name)) locator_set_name_set = 1; else if (unformat (line_input, "iface %U p %d w %d", unformat_vnet_sw_interface, vnm, &locator.sw_if_index, &locator.priority, &locator.weight)) { locator.local = 1; vec_add1 (locators, locator); } else { error = unformat_parse_error (line_input); goto done; } } if (!locator_set_name_set) { error = clib_error_return (0, "locator_set name not set!"); goto done; } a->name = locator_set_name; a->locators = locators; a->is_add = is_add; a->local = 1; vnet_lisp_add_del_locator (a, 0, &ls_index); done: vec_free (locators); vec_free (locator_set_name); return error; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (lisp_cp_add_del_locator_in_set_command) = { .path = "lisp locator", .short_help = "lisp locator add/del locator-set iface " "p w ", .function = lisp_add_del_locator_in_set_command_fn, }; /* *INDENT-ON* */ static clib_error_t * lisp_cp_show_locator_sets_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { locator_set_t *lsit; locator_t *loc; u32 *locit; lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); vlib_cli_output (vm, "%=20s%=16s%=16s%=16s", "Locator-set", "Locator", "Priority", "Weight"); /* *INDENT-OFF* */ pool_foreach (lsit, lcm->locator_set_pool, ({ u8 * msg = 0; int next_line = 0; if (lsit->local) { msg = format (msg, "%=16v", lsit->name); } else { msg = format (msg, "%=16s", "remote"); } vec_foreach (locit, lsit->locator_indices) { if (next_line) { msg = format (msg, "%16s", " "); } loc = pool_elt_at_index (lcm->locator_pool, locit[0]); if (loc->local) msg = format (msg, "%16d%16d%16d\n", loc->sw_if_index, loc->priority, loc->weight); else msg = format (msg, "%16U%16d%16d\n", format_ip_address, &gid_address_ip(&loc->address), loc->priority, loc->weight); next_line = 1; } vlib_cli_output (vm, "%v", msg); vec_free (msg); })); /* *INDENT-ON* */ return 0; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (lisp_cp_show_locator_sets_command) = { .path = "show lisp locator-set", .short_help = "Shows locator-sets", .function = lisp_cp_show_locator_sets_command_fn, }; /* *INDENT-ON* */ static map_resolver_t * get_map_resolver (ip_address_t * a) { lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); map_resolver_t *mr; vec_foreach (mr, lcm->map_resolvers) { if (!ip_address_cmp (&mr->address, a)) { return mr; } } return 0; } 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; map_resolver_t _mr, *mr = &_mr; if (vnet_lisp_enable_disable_status () == 0) { clib_warning ("LISP is disabled!"); return VNET_API_ERROR_LISP_DISABLED; } if (a->is_add) { if (get_map_resolver (&a->address)) { clib_warning ("map-resolver %U already exists!", format_ip_address, &a->address); return -1; } memset (mr, 0, sizeof (*mr)); ip_address_copy (&mr->address, &a->address); vec_add1 (lcm->map_resolvers, *mr); if (vec_len (lcm->map_resolvers) == 1) lcm->do_map_resolver_election = 1; } else { for (i = 0; i < vec_len (lcm->map_resolvers); i++) { mr = vec_elt_at_index (lcm->map_resolvers, i); if (!ip_address_cmp (&mr->address, &a->address)) { if (!ip_address_cmp (&mr->address, &lcm->active_map_resolver)) lcm->do_map_resolver_election = 1; vec_del1 (lcm->map_resolvers, i); break; } } } return 0; } static clib_error_t * lisp_add_del_map_resolver_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { unformat_input_t _line_input, *line_input = &_line_input; u8 is_add = 1, addr_set = 0; ip_address_t ip_addr; clib_error_t *error = 0; int rv = 0; vnet_lisp_add_del_map_resolver_args_t _a, *a = &_a; /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) return 0; while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "add")) is_add = 1; else if (unformat (line_input, "del")) is_add = 0; else if (unformat (line_input, "%U", unformat_ip_address, &ip_addr)) addr_set = 1; else { error = unformat_parse_error (line_input); goto done; } } if (!addr_set) { error = clib_error_return (0, "Map-resolver address must be set!"); goto done; } a->is_add = is_add; a->address = ip_addr; rv = vnet_lisp_add_del_map_resolver (a); if (0 != rv) { error = clib_error_return (0, "failed to %s map-resolver!", is_add ? "add" : "delete"); } done: return error; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (lisp_add_del_map_resolver_command) = { .path = "lisp map-resolver", .short_help = "lisp map-resolver add/del ", .function = lisp_add_del_map_resolver_command_fn, }; /* *INDENT-ON* */ int vnet_lisp_add_del_mreq_itr_rlocs (vnet_lisp_add_del_mreq_itr_rloc_args_t * a) { lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); uword *p = 0; if (vnet_lisp_enable_disable_status () == 0) { clib_warning ("LISP is disabled!"); return VNET_API_ERROR_LISP_DISABLED; } if (a->is_add) { p = hash_get_mem (lcm->locator_set_index_by_name, a->locator_set_name); if (!p) { clib_warning ("locator-set %v doesn't exist", a->locator_set_name); return VNET_API_ERROR_INVALID_ARGUMENT; } lcm->mreq_itr_rlocs = p[0]; } else { lcm->mreq_itr_rlocs = ~0; } return 0; } static clib_error_t * lisp_add_del_mreq_itr_rlocs_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { unformat_input_t _line_input, *line_input = &_line_input; u8 is_add = 1; u8 *locator_set_name = 0; clib_error_t *error = 0; int rv = 0; vnet_lisp_add_del_mreq_itr_rloc_args_t _a, *a = &_a; /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) return 0; while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "del")) is_add = 0; else if (unformat (line_input, "add %s", &locator_set_name)) is_add = 1; else { error = unformat_parse_error (line_input); goto done; } } a->is_add = is_add; a->locator_set_name = locator_set_name; rv = vnet_lisp_add_del_mreq_itr_rlocs (a); if (0 != rv) { error = clib_error_return (0, "failed to %s map-request itr-rlocs!", is_add ? "add" : "delete"); } vec_free (locator_set_name); done: return error; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (lisp_add_del_map_request_command) = { .path = "lisp map-request itr-rlocs", .short_help = "lisp map-request itr-rlocs add/del ", .function = lisp_add_del_mreq_itr_rlocs_command_fn, }; /* *INDENT-ON* */ static clib_error_t * lisp_show_mreq_itr_rlocs_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); locator_set_t *loc_set; vlib_cli_output (vm, "%=20s", "itr-rlocs"); if (~0 == lcm->mreq_itr_rlocs) { return 0; } loc_set = pool_elt_at_index (lcm->locator_set_pool, lcm->mreq_itr_rlocs); vlib_cli_output (vm, "%=20s", loc_set->name); return 0; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (lisp_show_map_request_command) = { .path = "show lisp map-request itr-rlocs", .short_help = "Shows map-request itr-rlocs", .function = lisp_show_mreq_itr_rlocs_command_fn, }; /* *INDENT-ON* */ /* Statistics (not really errors) */ #define foreach_lisp_cp_lookup_error \ _(DROP, "drop") \ _(MAP_REQUESTS_SENT, "map-request sent") static char *lisp_cp_lookup_error_strings[] = { #define _(sym,string) string, foreach_lisp_cp_lookup_error #undef _ }; typedef enum { #define _(sym,str) LISP_CP_LOOKUP_ERROR_##sym, foreach_lisp_cp_lookup_error #undef _ LISP_CP_LOOKUP_N_ERROR, } lisp_cp_lookup_error_t; typedef enum { LISP_CP_LOOKUP_NEXT_DROP, LISP_CP_LOOKUP_NEXT_IP4_LOOKUP, LISP_CP_LOOKUP_NEXT_IP6_LOOKUP, 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) { map_resolver_t *mrit; ip_address_t *a; if (vec_len (lcm->map_resolvers) == 0) { clib_warning ("No map-resolver configured"); return 0; } /* find the first mr ip we have a route to and the ip of the * iface that has a route to it */ vec_foreach (mrit, lcm->map_resolvers) { a = &mrit->address; if (0 != ip_fib_get_first_egress_ip_for_dst (lcm, a, sloc)) { ip_address_copy (mr_ip, a); /* also update globals */ return 1; } } clib_warning ("Can't find map-resolver and local interface ip!"); return 0; } static gid_address_t * build_itr_rloc_list (lisp_cp_main_t * lcm, locator_set_t * loc_set) { void *addr; u32 i; locator_t *loc; u32 *loc_indexp; ip_interface_address_t *ia = 0; gid_address_t gid_data, *gid = &gid_data; gid_address_t *rlocs = 0; ip_prefix_t *ippref = &gid_address_ippref (gid); ip_address_t *rloc = &ip_prefix_addr (ippref); memset (gid, 0, sizeof (gid[0])); gid_address_type (gid) = GID_ADDR_IP_PREFIX; for (i = 0; i < vec_len (loc_set->locator_indices); i++) { loc_indexp = vec_elt_at_index (loc_set->locator_indices, i); loc = pool_elt_at_index (lcm->locator_pool, loc_indexp[0]); /* Add ipv4 locators first TODO sort them */ /* *INDENT-OFF* */ foreach_ip_interface_address (&lcm->im4->lookup_main, ia, loc->sw_if_index, 1 /* unnumbered */, ({ addr = ip_interface_address_get_address (&lcm->im4->lookup_main, ia); ip_address_set (rloc, addr, IP4); ip_prefix_len (ippref) = 32; ip_prefix_normalize (ippref); vec_add1 (rlocs, gid[0]); })); /* Add ipv6 locators */ foreach_ip_interface_address (&lcm->im6->lookup_main, ia, loc->sw_if_index, 1 /* unnumbered */, ({ addr = ip_interface_address_get_address (&lcm->im6->lookup_main, ia); ip_address_set (rloc, addr, IP6); ip_prefix_len (ippref) = 128; ip_prefix_normalize (ippref); vec_add1 (rlocs, gid[0]); })); /* *INDENT-ON* */ } return rlocs; } static vlib_buffer_t * build_encapsulated_map_request (lisp_cp_main_t * lcm, gid_address_t * seid, gid_address_t * deid, locator_set_t * loc_set, ip_address_t * mr_ip, ip_address_t * sloc, u8 is_smr_invoked, u64 * nonce_res, u32 * bi_res) { vlib_buffer_t *b; u32 bi; gid_address_t *rlocs = 0; vlib_main_t *vm = lcm->vlib_main; if (vlib_buffer_alloc (vm, &bi, 1) != 1) { clib_warning ("Can't allocate buffer for Map-Request!"); return 0; } b = vlib_get_buffer (vm, bi); /* leave some space for the encap headers */ vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN); /* get rlocs */ rlocs = build_itr_rloc_list (lcm, loc_set); /* put lisp msg */ lisp_msg_put_mreq (lcm, b, seid, deid, rlocs, is_smr_invoked, nonce_res); /* push ecm: udp-ip-lisp */ lisp_msg_push_ecm (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, seid, deid); /* push outer ip header */ pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc, mr_ip); bi_res[0] = bi; vec_free (rlocs); return b; } static void reset_pending_mr_counters (pending_map_request_t * r) { r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME; r->retries_num = 0; } static int elect_map_resolver (lisp_cp_main_t * lcm) { map_resolver_t *mr; vec_foreach (mr, lcm->map_resolvers) { if (!mr->is_down) { ip_address_copy (&lcm->active_map_resolver, &mr->address); lcm->do_map_resolver_election = 0; return 1; } } return 0; } #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) { map_resolver_t *mr; 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; ASSERT (*lcm->pending_map_request_lock); /* if there is already a pending request remember it */ /* *INDENT-OFF* */ pool_foreach(pmr, lcm->pending_map_requests_pool, ({ if (!gid_address_cmp (&pmr->src, seid) && !gid_address_cmp (&pmr->dst, deid)) { duplicate_pmr = pmr; break; } })); /* *INDENT-ON* */ if (!is_resend && duplicate_pmr) { /* don't send the request if there is a pending map request already */ return 0; } /* get locator-set for seid */ if (!lcm->lisp_pitr) { map_index = gid_dictionary_lookup (&lcm->mapping_index_by_gid, seid); if (map_index == ~0) { clib_warning ("No local mapping found in eid-table for %U!", format_gid_address, seid); return -1; } map = pool_elt_at_index (lcm->mapping_pool, map_index); if (!map->local) { clib_warning ("Mapping found for src eid %U is not marked as local!", format_gid_address, seid); return -1; } ls_index = map->locator_set_index; } else { map_index = lcm->pitr_map_index; map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index); ls_index = map->locator_set_index; } /* overwrite locator set if map-request itr-rlocs configured */ if (~0 != lcm->mreq_itr_rlocs) { ls_index = lcm->mreq_itr_rlocs; } loc_set = pool_elt_at_index (lcm->locator_set_pool, ls_index); while (lcm->do_map_resolver_election | (0 == ip_fib_get_first_egress_ip_for_dst (lcm, &lcm->active_map_resolver, &sloc))) { if (0 == elect_map_resolver (lcm)) /* all Mrs are down */ { if (duplicate_pmr) duplicate_pmr->to_be_removed = 1; /* restart MR checking by marking all of them up */ vec_foreach (mr, lcm->map_resolvers) mr->is_down = 0; return -1; } } /* build the encapsulated map request */ b = build_encapsulated_map_request (lcm, seid, deid, loc_set, &lcm->active_map_resolver, &sloc, is_smr_invoked, &nonce, &bi); if (!b) return -1; /* set fib index to default and lookup node */ vnet_buffer (b)->sw_if_index[VLIB_TX] = 0; next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ? ip4_lookup_node.index : ip6_lookup_node.index; f = vlib_get_frame_to_node (lcm->vlib_main, next_index); /* Enqueue the packet */ to_next = vlib_frame_vector_args (f); to_next[0] = bi; f->n_vectors = 1; vlib_put_frame_to_node (lcm->vlib_main, next_index, f); if (duplicate_pmr) /* if there is a pending request already update it */ { if (clib_fifo_elts (duplicate_pmr->nonces) >= PENDING_MREQ_QUEUE_LEN) { /* remove the oldest nonce */ u64 CLIB_UNUSED (tmp), *nonce_del; nonce_del = clib_fifo_head (duplicate_pmr->nonces); hash_unset (lcm->pending_map_requests_by_nonce, nonce_del[0]); clib_fifo_sub1 (duplicate_pmr->nonces, tmp); } clib_fifo_add1 (duplicate_pmr->nonces, nonce); hash_set (lcm->pending_map_requests_by_nonce, nonce, duplicate_pmr - lcm->pending_map_requests_pool); } else { /* add map-request to pending requests table */ pool_get (lcm->pending_map_requests_pool, pmr); memset (pmr, 0, sizeof (*pmr)); gid_address_copy (&pmr->src, seid); gid_address_copy (&pmr->dst, deid); clib_fifo_add1 (pmr->nonces, nonce); pmr->is_smr_invoked = is_smr_invoked; reset_pending_mr_counters (pmr); hash_set (lcm->pending_map_requests_by_nonce, nonce, pmr - lcm->pending_map_requests_pool); } return 0; } static void get_src_and_dst_ip (void *hdr, ip_address_t * src, ip_address_t * dst) { ip4_header_t *ip4 = hdr; ip6_header_t *ip6; if ((ip4->ip_version_and_header_length & 0xF0) == 0x40) { ip_address_set (src, &ip4->src_address, IP4); ip_address_set (dst, &ip4->dst_address, IP4); } else { ip6 = hdr; ip_address_set (src, &ip6->src_address, IP6); ip_address_set (dst, &ip6->dst_address, IP6); } } static u32 lisp_get_vni_from_buffer_ip (lisp_cp_main_t * lcm, vlib_buffer_t * b, u8 version) { uword *vnip; u32 vni = ~0, table_id = ~0, fib_index; if (version == IP4) { ip4_fib_t *fib; ip4_main_t *im4 = &ip4_main; fib_index = vec_elt (im4->fib_index_by_sw_if_index, vnet_buffer (b)->sw_if_index[VLIB_RX]); fib = find_ip4_fib_by_table_index_or_id (im4, fib_index, IP4_ROUTE_FLAG_FIB_INDEX); table_id = fib->table_id; } else { ip6_fib_t *fib; ip6_main_t *im6 = &ip6_main; fib_index = vec_elt (im6->fib_index_by_sw_if_index, vnet_buffer (b)->sw_if_index[VLIB_RX]); fib = find_ip6_fib_by_table_index_or_id (im6, fib_index, IP6_ROUTE_FLAG_FIB_INDEX); table_id = fib->table_id; } vnip = hash_get (lcm->vni_by_table_id, table_id); if (vnip) vni = vnip[0]; else clib_warning ("vrf %d is not mapped to any vni!", table_id); return vni; } always_inline u32 lisp_get_vni_from_buffer_eth (lisp_cp_main_t * lcm, vlib_buffer_t * b) { uword *vnip; u32 vni = ~0; u32 sw_if_index0; l2input_main_t *l2im = &l2input_main; l2_input_config_t *config; l2_bridge_domain_t *bd_config; sw_if_index0 = vnet_buffer (b)->sw_if_index[VLIB_RX]; config = vec_elt_at_index (l2im->configs, sw_if_index0); bd_config = vec_elt_at_index (l2im->bd_configs, config->bd_index); vnip = hash_get (lcm->vni_by_bd_id, bd_config->bd_id); if (vnip) vni = vnip[0]; else clib_warning ("bridge domain %d is not mapped to any vni!", config->bd_index); return vni; } always_inline void get_src_and_dst_eids_from_buffer (lisp_cp_main_t * lcm, vlib_buffer_t * b, gid_address_t * src, gid_address_t * dst) { u32 vni = 0; u16 type; memset (src, 0, sizeof (*src)); memset (dst, 0, sizeof (*dst)); type = vnet_buffer (b)->lisp.overlay_afi; if (LISP_AFI_IP == type || LISP_AFI_IP6 == type) { ip4_header_t *ip; u8 version, preflen; gid_address_type (src) = GID_ADDR_IP_PREFIX; gid_address_type (dst) = GID_ADDR_IP_PREFIX; ip = vlib_buffer_get_current (b); get_src_and_dst_ip (ip, &gid_address_ip (src), &gid_address_ip (dst)); version = gid_address_ip_version (src); preflen = ip_address_max_len (version); gid_address_ippref_len (src) = preflen; gid_address_ippref_len (dst) = preflen; vni = lisp_get_vni_from_buffer_ip (lcm, b, version); gid_address_vni (dst) = vni; gid_address_vni (src) = vni; } else if (LISP_AFI_MAC == type) { ethernet_header_t *eh; eh = vlib_buffer_get_current (b); gid_address_type (src) = GID_ADDR_MAC; gid_address_type (dst) = GID_ADDR_MAC; mac_copy (&gid_address_mac (src), eh->src_address); mac_copy (&gid_address_mac (dst), eh->dst_address); /* get vni */ vni = lisp_get_vni_from_buffer_eth (lcm, b); gid_address_vni (dst) = vni; gid_address_vni (src) = vni; } } static uword lisp_cp_lookup (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame) { u32 *from, *to_next_drop, di, si; lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); u32 pkts_mapped = 0; uword n_left_from, n_left_to_next_drop; from = vlib_frame_vector_args (from_frame); n_left_from = from_frame->n_vectors; while (n_left_from > 0) { vlib_get_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP, to_next_drop, n_left_to_next_drop); while (n_left_from > 0 && n_left_to_next_drop > 0) { u32 pi0; vlib_buffer_t *b0; gid_address_t src, dst; pi0 = from[0]; from += 1; n_left_from -= 1; to_next_drop[0] = pi0; to_next_drop += 1; n_left_to_next_drop -= 1; b0 = vlib_get_buffer (vm, pi0); b0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP]; /* src/dst eid pair */ get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst); /* if we have remote mapping for destination already in map-chache add forwarding tunnel directly. If not send a map-request */ di = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst); if (~0 != di) { mapping_t *m = vec_elt_at_index (lcm->mapping_pool, di); /* send a map-request also in case of negative mapping entry with corresponding action */ if (m->action == LISP_SEND_MAP_REQUEST) { /* send map-request */ queue_map_request (&src, &dst, 0 /* smr_invoked */ , 0 /* is_resend */ ); pkts_mapped++; } else { si = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &src); if (~0 != si) { dp_add_fwd_entry (lcm, si, di); } } } else { /* send map-request */ queue_map_request (&src, &dst, 0 /* smr_invoked */ , 0 /* is_resend */ ); pkts_mapped++; } if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) { lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, b0, sizeof (*tr)); memset (tr, 0, sizeof (*tr)); gid_address_copy (&tr->dst_eid, &dst); if (vec_len (lcm->map_resolvers) > 0) { clib_memcpy (&tr->map_resolver_ip, vec_elt_at_index (lcm->map_resolvers, 0), sizeof (ip_address_t)); } } gid_address_free (&dst); gid_address_free (&src); } vlib_put_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP, n_left_to_next_drop); } vlib_node_increment_counter (vm, node->node_index, LISP_CP_LOOKUP_ERROR_MAP_REQUESTS_SENT, pkts_mapped); return from_frame->n_vectors; } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (lisp_cp_lookup_node) = { .function = lisp_cp_lookup, .name = "lisp-cp-lookup", .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_IP4_LOOKUP] = "ip4-lookup", [LISP_CP_LOOKUP_NEXT_IP6_LOOKUP] = "ip6-lookup", }, }; /* *INDENT-ON* */ /* lisp_cp_input statistics */ #define foreach_lisp_cp_input_error \ _(DROP, "drop") \ _(MAP_REPLIES_RECEIVED, "map-replies received") static char *lisp_cp_input_error_strings[] = { #define _(sym,string) string, foreach_lisp_cp_input_error #undef _ }; typedef enum { #define _(sym,str) LISP_CP_INPUT_ERROR_##sym, foreach_lisp_cp_input_error #undef _ LISP_CP_INPUT_N_ERROR, } lisp_cp_input_error_t; typedef enum { LISP_CP_INPUT_NEXT_DROP, LISP_CP_INPUT_N_NEXT, } lisp_cp_input_next_t; typedef struct { gid_address_t dst_eid; ip4_address_t map_resolver_ip; } lisp_cp_input_trace_t; u8 * format_lisp_cp_input_trace (u8 * s, va_list * args) { CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); CLIB_UNUSED (lisp_cp_input_trace_t * t) = va_arg (*args, lisp_cp_input_trace_t *); s = format (s, "LISP-CP-INPUT: TODO"); return s; } void * process_map_reply (void *arg) { lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); vlib_buffer_t *b = arg; u32 len = 0, i, ttl, dst_map_index = 0; void *h; pending_map_request_t *pmr; locator_t probed; map_reply_hdr_t *mrep_hdr; u64 nonce, *noncep; gid_address_t deid; uword *pmr_index; u8 authoritative, action; locator_t *locators = 0, *loc; mrep_hdr = vlib_buffer_get_current (b); lisp_pending_map_request_lock (lcm); /* Check pending requests table and nonce */ nonce = MREP_NONCE (mrep_hdr); pmr_index = hash_get (lcm->pending_map_requests_by_nonce, nonce); if (!pmr_index) { clib_warning ("No pending map-request entry with nonce %lu!", nonce); goto done; } pmr = pool_elt_at_index (lcm->pending_map_requests_pool, pmr_index[0]); vlib_buffer_pull (b, sizeof (*mrep_hdr)); for (i = 0; i < MREP_REC_COUNT (mrep_hdr); i++) { h = vlib_buffer_get_current (b); ttl = clib_net_to_host_u32 (MAP_REC_TTL (h)); action = MAP_REC_ACTION (h); 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!"); vec_foreach (loc, locators) { locator_free (loc); } vec_free (locators); goto done; } /* insert/update mappings cache */ vnet_lisp_add_del_mapping (&deid, locators, action, authoritative, ttl, 1, 0 /* is_static */ , &dst_map_index); /* try to program forwarding only if mapping saved or updated */ if ((u32) ~ 0 != dst_map_index) lisp_add_del_adjacency (lcm, &pmr->src, &deid, 1); vec_free (locators); } /* 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: lisp_pending_map_request_unlock (lcm); return 0; } void process_map_request (vlib_main_t * vm, lisp_cp_main_t * lcm, vlib_buffer_t * b) { map_request_hdr_t *mreq_hdr; gid_address_t src, dst; // u64 nonce; u32 i, len = 0; gid_address_t *itr_rlocs = 0, *rloc; mreq_hdr = vlib_buffer_get_current (b); vlib_buffer_pull (b, sizeof (*mreq_hdr)); // nonce = MREQ_NONCE(mreq_hdr); if (!MREQ_SMR (mreq_hdr)) { clib_warning ("Only SMR Map-Requests supported for now!"); return; } /* parse src eid */ len = lisp_msg_parse_addr (b, &src); if (len == ~0) return; /* for now we don't do anything with the itr's rlocs */ len = lisp_msg_parse_itr_rlocs (b, &itr_rlocs, MREQ_ITR_RLOC_COUNT (mreq_hdr) + 1); if (len == ~0) return; /* TODO: RLOCs are currently unused, so free them for now */ vec_foreach (rloc, itr_rlocs) { gid_address_free (rloc); } /* parse eid records and send SMR-invoked map-requests */ for (i = 0; i < MREQ_REC_COUNT (mreq_hdr); i++) { memset (&dst, 0, sizeof (dst)); len = lisp_msg_parse_eid_rec (b, &dst); if (len == ~0) { clib_warning ("Can't parse map-request EID-record"); return; } /* send SMR-invoked map-requests */ queue_map_request (&dst, &src, 1 /* invoked */ , 0 /* resend */ ); } } static void queue_map_reply (vlib_buffer_t * b) { vlib_buffer_t *a = clib_mem_alloc (sizeof (a[0]) + b->current_length); clib_memcpy (a->data, b->data + b->current_data, b->current_length); a->current_length = b->current_length; a->current_data = 0; vl_api_rpc_call_main_thread (process_map_reply, (u8 *) a, sizeof (a[0]) + a->current_length); clib_mem_free (a); } static uword lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame) { u32 n_left_from, *from, *to_next_drop; lisp_msg_type_e type; lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); 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: queue_map_reply (b0); break; case LISP_MAP_REQUEST: process_map_request (vm, lcm, b0); break; default: clib_warning ("Unsupported LISP message type %d", type); break; } b0->error = node->errors[LISP_CP_INPUT_ERROR_DROP]; if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) { } } vlib_put_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP, n_left_to_next_drop); } return from_frame->n_vectors; } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (lisp_cp_input_node) = { .function = lisp_cp_input, .name = "lisp-cp-input", .vector_size = sizeof (u32), .format_trace = format_lisp_cp_input_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = LISP_CP_INPUT_N_ERROR, .error_strings = lisp_cp_input_error_strings, .n_next_nodes = LISP_CP_INPUT_N_NEXT, .next_nodes = { [LISP_CP_INPUT_NEXT_DROP] = "error-drop", }, }; /* *INDENT-ON* */ clib_error_t * lisp_cp_init (vlib_main_t * vm) { lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); clib_error_t *error = 0; if ((error = vlib_call_init_function (vm, lisp_gpe_init))) return error; lcm->im4 = &ip4_main; lcm->im6 = &ip6_main; lcm->vlib_main = vm; lcm->vnet_main = vnet_get_main (); lcm->mreq_itr_rlocs = ~0; lcm->lisp_pitr = 0; lcm->pending_map_request_lock = clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES, CLIB_CACHE_LINE_BYTES); lcm->pending_map_request_lock[0] = 0; gid_dictionary_init (&lcm->mapping_index_by_gid); lcm->do_map_resolver_election = 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); 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 */ ); return 0; } static void * send_map_request_thread_fn (void *arg) { map_request_args_t *a = arg; lisp_cp_main_t *lcm = vnet_lisp_cp_get_main (); lisp_pending_map_request_lock (lcm); 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); lisp_pending_map_request_unlock (lcm); 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 (); map_resolver_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; ASSERT (*lcm->pending_map_request_lock); /* *INDENT-OFF* */ pool_foreach (pmr, lcm->pending_map_requests_pool, ({ if (pmr->to_be_removed) { clib_fifo_foreach (nonce, pmr->nonces, ({ hash_unset (lcm->pending_map_requests_by_nonce, nonce[0]); })); vec_add1 (to_be_removed, pmr - lcm->pending_map_requests_pool); } })); /* *INDENT-ON* */ vec_foreach (pmr_index, to_be_removed) pool_put_index (lcm->pending_map_requests_by_nonce, pmr_index[0]); vec_free (to_be_removed); } static uword send_map_resolver_service (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f) { 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); lisp_pending_map_request_lock (lcm); /* *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); lisp_pending_map_request_unlock (lcm); } /* unreachable */ return 0; } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (lisp_retry_service_node,static) = { .function = send_map_resolver_service, .type = VLIB_NODE_TYPE_PROCESS, .name = "lisp-retry-service", .process_log2_n_stack_bytes = 16, }; /* *INDENT-ON* */ VLIB_INIT_FUNCTION (lisp_cp_init); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */