2 * Copyright (c) 2018 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 #include <plugins/gbp/gbp.h>
17 #include <plugins/gbp/gbp_fwd_dpo.h>
18 #include <plugins/gbp/gbp_policy_dpo.h>
19 #include <plugins/gbp/gbp_route_domain.h>
21 #include <vnet/fib/fib_table.h>
22 #include <vnet/dpo/load_balance.h>
27 typedef struct gbp_subnet_key_t_
36 typedef struct gbp_subnet_t_
38 gbp_subnet_key_t *gs_key;
39 gbp_subnet_type_t gs_type;
48 } gs_stitched_external;
55 fib_node_index_t gs_fei;
59 * A DB of the subnets; key={pfx,fib-index}
66 gbp_subnet_t *gbp_subnet_pool;
69 gbp_subnet_db_find (u32 fib_index, const fib_prefix_t * pfx)
71 gbp_subnet_key_t key = {
73 .gsk_fib_index = fib_index,
77 p = hash_get_mem (gbp_subnet_db, &key);
82 return (INDEX_INVALID);
86 gbp_subnet_db_add (u32 fib_index, const fib_prefix_t * pfx, gbp_subnet_t * gs)
88 gbp_subnet_key_t *key;
90 key = clib_mem_alloc (sizeof (*key));
92 clib_memcpy (&(key->gsk_pfx), pfx, sizeof (*pfx));
93 key->gsk_fib_index = fib_index;
95 hash_set_mem (gbp_subnet_db, key, (gs - gbp_subnet_pool));
101 gbp_subnet_db_del (gbp_subnet_t * gs)
103 hash_unset_mem (gbp_subnet_db, gs->gs_key);
105 clib_mem_free (gs->gs_key);
111 gbp_subnet_transport_add (gbp_subnet_t * gs)
113 dpo_id_t gfd = DPO_INVALID;
114 gbp_route_domain_t *grd;
115 fib_protocol_t fproto;
117 fproto = gs->gs_key->gsk_pfx.fp_proto;
118 grd = gbp_route_domain_get (gs->gs_rd);
120 gs->gs_fei = fib_table_entry_update_one_path (gs->gs_key->gsk_fib_index,
121 &gs->gs_key->gsk_pfx,
122 FIB_SOURCE_PLUGIN_HI,
124 fib_proto_to_dpo (fproto),
126 grd->grd_uu_sw_if_index
127 [fproto], ~0, 1, NULL,
128 FIB_ROUTE_PATH_FLAG_NONE);
136 gbp_subnet_internal_add (gbp_subnet_t * gs)
138 dpo_id_t gfd = DPO_INVALID;
140 gbp_fwd_dpo_add_or_lock (fib_proto_to_dpo (gs->gs_key->gsk_pfx.fp_proto),
143 gs->gs_fei = fib_table_entry_special_dpo_update (gs->gs_key->gsk_fib_index,
144 &gs->gs_key->gsk_pfx,
145 FIB_SOURCE_PLUGIN_HI,
146 FIB_ENTRY_FLAG_EXCLUSIVE,
155 gbp_subnet_external_add (gbp_subnet_t * gs, u32 sw_if_index, epg_id_t epg)
157 dpo_id_t gpd = DPO_INVALID;
159 gs->gs_stitched_external.gs_epg = epg;
160 gs->gs_stitched_external.gs_sw_if_index = sw_if_index;
162 gbp_policy_dpo_add_or_lock (fib_proto_to_dpo (gs->gs_key->gsk_pfx.fp_proto),
163 gs->gs_stitched_external.gs_epg,
164 gs->gs_stitched_external.gs_sw_if_index, &gpd);
166 gs->gs_fei = fib_table_entry_special_dpo_update (gs->gs_key->gsk_fib_index,
167 &gs->gs_key->gsk_pfx,
168 FIB_SOURCE_PLUGIN_HI,
169 (FIB_ENTRY_FLAG_EXCLUSIVE |
170 FIB_ENTRY_FLAG_LOOSE_URPF_EXEMPT),
179 gbp_subnet_l3_out_add (gbp_subnet_t * gs, u32 sw_if_index, epg_id_t epg)
181 dpo_id_t gpd = DPO_INVALID;
183 gs->gs_l3_out.gs_epg = epg;
185 gbp_policy_dpo_add_or_lock (fib_proto_to_dpo (gs->gs_key->gsk_pfx.fp_proto),
186 gs->gs_l3_out.gs_epg, ~0, &gpd);
188 gs->gs_fei = fib_table_entry_special_dpo_add (gs->gs_key->gsk_fib_index,
189 &gs->gs_key->gsk_pfx,
191 FIB_ENTRY_FLAG_INTERPOSE,
200 gbp_subnet_del (u32 rd_id, const fib_prefix_t * pfx)
202 gbp_route_domain_t *grd;
207 grdi = gbp_route_domain_find (rd_id);
210 return (VNET_API_ERROR_NO_SUCH_FIB);
212 grd = gbp_route_domain_get (grdi);
213 fib_index = grd->grd_fib_index[pfx->fp_proto];
215 gsi = gbp_subnet_db_find (fib_index, pfx);
217 if (INDEX_INVALID == gsi)
218 return (VNET_API_ERROR_NO_SUCH_ENTRY);
220 gs = pool_elt_at_index (gbp_subnet_pool, gsi);
222 if (GBP_SUBNET_L3_OUT == gs->gs_type)
223 fib_table_entry_delete (fib_index, pfx, FIB_SOURCE_SPECIAL);
225 fib_table_entry_delete (fib_index, pfx, FIB_SOURCE_PLUGIN_HI);
227 gbp_subnet_db_del (gs);
228 gbp_route_domain_unlock (gs->gs_rd);
230 pool_put (gbp_subnet_pool, gs);
236 gbp_subnet_add (u32 rd_id,
237 const fib_prefix_t * pfx,
238 gbp_subnet_type_t type, u32 sw_if_index, epg_id_t epg)
240 gbp_route_domain_t *grd;
246 grdi = gbp_route_domain_find_and_lock (rd_id);
249 return (VNET_API_ERROR_NO_SUCH_FIB);
251 grd = gbp_route_domain_get (grdi);
252 fib_index = grd->grd_fib_index[pfx->fp_proto];
254 gsi = gbp_subnet_db_find (fib_index, pfx);
256 if (INDEX_INVALID != gsi)
257 return (VNET_API_ERROR_ENTRY_ALREADY_EXISTS);
261 pool_get (gbp_subnet_pool, gs);
265 gbp_subnet_db_add (fib_index, pfx, gs);
269 case GBP_SUBNET_STITCHED_INTERNAL:
270 rv = gbp_subnet_internal_add (gs);
272 case GBP_SUBNET_STITCHED_EXTERNAL:
273 rv = gbp_subnet_external_add (gs, sw_if_index, epg);
275 case GBP_SUBNET_TRANSPORT:
276 rv = gbp_subnet_transport_add (gs);
278 case GBP_SUBNET_L3_OUT:
279 rv = gbp_subnet_l3_out_add (gs, sw_if_index, epg);
287 gbp_subnet_walk (gbp_subnet_cb_t cb, void *ctx)
289 gbp_route_domain_t *grd;
298 pool_foreach (gs, gbp_subnet_pool,
300 grd = gbp_route_domain_get(gs->gs_rd);
304 case GBP_SUBNET_STITCHED_INTERNAL:
305 case GBP_SUBNET_TRANSPORT:
306 /* use defaults above */
308 case GBP_SUBNET_STITCHED_EXTERNAL:
309 sw_if_index = gs->gs_stitched_external.gs_sw_if_index;
310 epg = gs->gs_stitched_external.gs_epg;
312 case GBP_SUBNET_L3_OUT:
313 epg = gs->gs_l3_out.gs_epg;
317 if (WALK_STOP == cb (grd->grd_id, &gs->gs_key->gsk_pfx,
318 gs->gs_type, sw_if_index, epg, ctx))
324 typedef enum gsb_subnet_show_flags_t_
326 GBP_SUBNET_SHOW_BRIEF,
327 GBP_SUBNET_SHOW_DETAILS,
328 } gsb_subnet_show_flags_t;
331 format_gbp_subnet_type (u8 * s, va_list * args)
333 gbp_subnet_type_t type = va_arg (*args, gbp_subnet_type_t);
337 case GBP_SUBNET_STITCHED_INTERNAL:
338 return (format (s, "stitched-internal"));
339 case GBP_SUBNET_STITCHED_EXTERNAL:
340 return (format (s, "stitched-external"));
341 case GBP_SUBNET_TRANSPORT:
342 return (format (s, "transport"));
343 case GBP_SUBNET_L3_OUT:
344 return (format (s, "l3-out"));
347 return (format (s, "unknown"));
351 format_gbp_subnet (u8 * s, va_list * args)
353 index_t gsi = va_arg (*args, index_t);
354 gsb_subnet_show_flags_t flags = va_arg (*args, gsb_subnet_show_flags_t);
358 gs = pool_elt_at_index (gbp_subnet_pool, gsi);
360 table_id = fib_table_get_table_id (gs->gs_key->gsk_fib_index,
361 gs->gs_key->gsk_pfx.fp_proto);
363 s = format (s, "[%d] tbl:%d %U %U", gsi, table_id,
364 format_fib_prefix, &gs->gs_key->gsk_pfx,
365 format_gbp_subnet_type, gs->gs_type);
369 case GBP_SUBNET_STITCHED_INTERNAL:
370 case GBP_SUBNET_TRANSPORT:
372 case GBP_SUBNET_STITCHED_EXTERNAL:
373 s = format (s, " {epg:%d %U}", gs->gs_stitched_external.gs_epg,
374 format_vnet_sw_if_index_name,
375 vnet_get_main (), gs->gs_stitched_external.gs_sw_if_index);
377 case GBP_SUBNET_L3_OUT:
378 s = format (s, " {epg:%d}", gs->gs_l3_out.gs_epg);
384 case GBP_SUBNET_SHOW_DETAILS:
386 s = format (s, "\n %U", format_fib_entry, gs->gs_fei,
387 FIB_ENTRY_FORMAT_DETAIL);
389 case GBP_SUBNET_SHOW_BRIEF:
395 static clib_error_t *
396 gbp_subnet_show (vlib_main_t * vm,
397 unformat_input_t * input, vlib_cli_command_t * cmd)
403 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
405 if (unformat (input, "%d", &gsi))
411 if (INDEX_INVALID != gsi)
413 vlib_cli_output (vm, "%U", format_gbp_subnet, gsi,
414 GBP_SUBNET_SHOW_DETAILS);
419 pool_foreach_index(gsi, gbp_subnet_pool,
421 vlib_cli_output (vm, "%U", format_gbp_subnet, gsi,
422 GBP_SUBNET_SHOW_BRIEF);
431 * Show Group Based Policy Subnets
434 * @cliexstart{show gbp subnet}
438 VLIB_CLI_COMMAND (gbp_subnet_show_node, static) = {
439 .path = "show gbp subnet",
440 .short_help = "show gbp subnet\n",
441 .function = gbp_subnet_show,
445 static clib_error_t *
446 gbp_subnet_init (vlib_main_t * vm)
448 gbp_subnet_db = hash_create_mem (0,
449 sizeof (gbp_subnet_key_t), sizeof (u32));
454 VLIB_INIT_FUNCTION (gbp_subnet_init);
457 * fd.io coding-style-patch-verification: ON
460 * eval: (c-set-style "gnu")