X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Flisp-cp%2Fcontrol.c;h=5c901f368c3af26c6fb5ab45068cb709453785cb;hb=fc5684149e63ddf41ea07e653e096aae476ccf68;hp=043d60fc15c6f7bfc28169a24f79617390dd8b7e;hpb=f3dc11a9d71a30ac89e7ceb523abdb1ff13f0ac3;p=vpp.git diff --git a/src/vnet/lisp-cp/control.c b/src/vnet/lisp-cp/control.c index 043d60fc15c..5c901f368c3 100644 --- a/src/vnet/lisp-cp/control.c +++ b/src/vnet/lisp-cp/control.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include @@ -284,6 +285,7 @@ dp_del_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index) if (fe->is_src_dst) gid_address_copy (&a->lcl_eid, &fe->leid); + vnet_lisp_del_fwd_stats (a, feip[0]); vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index); /* delete entry in fwd table */ @@ -432,11 +434,13 @@ 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; + gid_address_t *rmt_eid, *lcl_eid; + mapping_t *lcl_map, *rmt_map; u32 sw_if_index; uword *feip = 0, *dpid; fwd_entry_t *fe; u8 type, is_src_dst = 0; + int rv; memset (a, 0, sizeof (*a)); @@ -445,35 +449,47 @@ dp_add_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index) if (feip) dp_del_fwd_entry (lcm, src_map_index, dst_map_index); + /* + * Determine local mapping and eid + */ if (lcm->lisp_pitr) - src_map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index); + lcl_map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index); else - src_map = pool_elt_at_index (lcm->mapping_pool, src_map_index); - dst_map = pool_elt_at_index (lcm->mapping_pool, dst_map_index); - - /* insert data plane forwarding entry */ + 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 (&dst_map->eid)) + if (GID_ADDR_SRC_DST == gid_address_type (rmt_eid)) { - gid_address_sd_to_flat (&a->rmt_eid, &dst_map->eid, - &gid_address_sd_dst (&dst_map->eid)); - gid_address_sd_to_flat (&a->lcl_eid, &dst_map->eid, - &gid_address_sd_src (&dst_map->eid)); + 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, &dst_map->eid); - gid_address_copy (&a->lcl_eid, &src_map->eid); + 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, &dst_map->eid); + 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); @@ -499,17 +515,22 @@ dp_add_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index) } /* 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)) + 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)) { - /* negative entry */ - a->is_negative = 1; - a->action = dst_map->action; + rmt_map = lisp_get_petr_mapping (lcm); + rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs); } - /* 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; + /* negative entry */ + if (rv == 0) + { + a->is_negative = 1; + a->action = rmt_map->action; + } vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index); @@ -521,7 +542,7 @@ dp_add_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index) if (is_src_dst) gid_address_copy (&fe->leid, &a->lcl_eid); else - gid_address_copy (&fe->leid, &src_map->eid); + 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, @@ -845,11 +866,11 @@ vnet_lisp_eid_table_map (u32 vni, u32 dp_id, u8 is_l2, u8 is_add) "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); + + hash_unset (dp_table_by_vni[0], vni); + hash_unset (vni_by_dp_table[0], dp_id); } return 0; @@ -975,6 +996,20 @@ mapping_delete_timer (lisp_cp_main_t * lcm, u32 mi) timing_wheel_delete (&lcm->wheel, mi); } +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/removes/updates mapping. Does not program forwarding. * @@ -998,6 +1033,7 @@ vnet_lisp_add_del_mapping (gid_address_t * eid, locator_t * rlocs, u8 action, 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) { @@ -1018,6 +1054,18 @@ vnet_lisp_add_del_mapping (gid_address_t * eid, locator_t * rlocs, u8 action, if (is_add) { + /* check if none of the locators match localy 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, eid) == 0) @@ -1183,15 +1231,11 @@ vnet_lisp_add_del_adjacency (vnet_lisp_add_del_adjacency_args_t * a) if (a->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, &a->leid); - if (GID_LOOKUP_MISS == local_mi) { clib_warning ("Local eid %U not found. Cannot add adjacency!", @@ -1257,6 +1301,7 @@ vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 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; /* enable pitr mode */ @@ -1273,6 +1318,71 @@ vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add) return 0; } +/** + * 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; + } + + memset (ls_args, 0, sizeof (*ls_args)); + + if (is_add) + { + /* Create dummy petr locator-set */ + 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; + } + return 0; +} + /* cleans locator to locator-set data and removes locators not part of * any locator-set */ static void @@ -2205,7 +2315,7 @@ send_rloc_probe (lisp_cp_main_t * lcm, gid_address_t * deid, vnet_buffer (b)->sw_if_index[VLIB_TX] = 0; - next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ? + next_index = (ip_addr_version (rloc) == IP4) ? ip4_lookup_node.index : ip6_lookup_node.index; f = vlib_get_frame_to_node (lcm->vlib_main, next_index); @@ -2544,16 +2654,15 @@ lisp_get_vni_from_buffer_eth (lisp_cp_main_t * lcm, vlib_buffer_t * b) return vni; } -always_inline void +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) + gid_address_t * src, gid_address_t * dst, + u16 type) { 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) { @@ -2592,6 +2701,11 @@ get_src_and_dst_eids_from_buffer (lisp_cp_main_t * lcm, vlib_buffer_t * b, gid_address_vni (dst) = vni; gid_address_vni (src) = vni; } + else if (LISP_AFI_LCAF == type) + { + /* Eventually extend this to support NSH and other */ + ASSERT (0); + } } static uword @@ -2627,10 +2741,9 @@ lisp_cp_lookup_inline (vlib_main_t * vm, b0 = vlib_get_buffer (vm, pi0); b0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP]; - vnet_buffer (b0)->lisp.overlay_afi = overlay; /* src/dst eid pair */ - get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst); + get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst, overlay); /* if we have remote mapping for destination already in map-chache add forwarding tunnel directly. If not send a map-request */ @@ -2710,6 +2823,14 @@ lisp_cp_lookup_l2 (vlib_main_t * vm, 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, @@ -2767,6 +2888,25 @@ VLIB_REGISTER_NODE (lisp_cp_lookup_l2_node) = { }; /* *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", + }, +}; +/* *INDENT-ON* */ + /* lisp_cp_input statistics */ #define foreach_lisp_cp_input_error \ _(DROP, "drop") \ @@ -2883,21 +3023,21 @@ process_map_reply (map_records_arg_t * a) m->authoritative, m->ttl, 1, 0 /* is_static */ , &dst_map_index); + if (dst_map_index == (u32) ~ 0) + continue; + /* try to program forwarding only if mapping saved or updated */ - if ((u32) ~ 0 != dst_map_index) - { - vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args; - memset (adj_args, 0, sizeof (adj_args[0])); + vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args; + 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!"); + 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 * 60); - } + if ((u32) ~ 0 != m->ttl) + mapping_start_expiration_timer (lcm, dst_map_index, m->ttl * 60); } /* remove pending map request entry */ @@ -3442,6 +3582,7 @@ lisp_cp_init (vlib_main_t * vm) lcm->vnet_main = vnet_get_main (); lcm->mreq_itr_rlocs = ~0; lcm->lisp_pitr = 0; + lcm->flags = 0; memset (&lcm->active_map_resolver, 0, sizeof (lcm->active_map_resolver)); gid_dictionary_init (&lcm->mapping_index_by_gid); @@ -3462,6 +3603,55 @@ lisp_cp_init (vlib_main_t * vm) 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) +{ + lisp_stats_t *s; + lisp_gpe_fwd_entry_key_t fwd_key; + const lisp_gpe_tunnel_t *lgt; + fwd_entry_t *fe; + + memset (stat, 0, sizeof (*stat)); + 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; + + s = pool_elt_at_index (lgm->lisp_stats_pool, stats_index); + stat->stats = *s; + 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) { @@ -3659,6 +3849,33 @@ send_map_resolver_service (vlib_main_t * vm, 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; +} + /* *INDENT-OFF* */ VLIB_REGISTER_NODE (lisp_retry_service_node,static) = { .function = send_map_resolver_service,