2 *------------------------------------------------------------------
3 * Copyright (c) 2018 Cisco and/or its affiliates.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 *------------------------------------------------------------------
18 #include <vlib/vlib.h>
19 #include <vnet/mfib/mfib_entry.h>
20 #include <vnet/mfib/mfib_table.h>
22 #include <igmp/igmp_proxy.h>
23 #include <igmp/igmp.h>
24 #include <igmp/igmp_pkt.h>
27 igmp_proxy_device_mfib_path_add_del (igmp_group_t * group, u8 add)
29 igmp_config_t *config;
32 config = igmp_config_get (group->config);
34 mfib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
37 mfib_prefix_t mpfx_group_addr = {
38 .fp_proto = FIB_PROTOCOL_IP4,
41 .ip4 = (*group->key).ip4,
44 fib_route_path_t via_itf_path =
46 .frp_proto = fib_proto_to_dpo (FIB_PROTOCOL_IP4),
47 .frp_addr = zero_addr,
48 .frp_sw_if_index = config->sw_if_index,
51 .frp_mitf_flags = MFIB_ITF_FLAG_FORWARD,
55 mfib_table_entry_path_update (mfib_index, &mpfx_group_addr,
56 MFIB_SOURCE_IGMP, MFIB_ENTRY_FLAG_NONE,
59 mfib_table_entry_path_remove (mfib_index, &mpfx_group_addr,
60 MFIB_SOURCE_IGMP, &via_itf_path);
64 igmp_proxy_device_lookup (u32 vrf_id)
66 igmp_main_t *im = &igmp_main;
68 if (vec_len (im->igmp_proxy_device_by_vrf_id) > vrf_id)
71 index = im->igmp_proxy_device_by_vrf_id[vrf_id];
73 return (vec_elt_at_index (im->proxy_devices, index));
79 igmp_proxy_device_add_del (u32 vrf_id, u32 sw_if_index, u8 add)
81 igmp_main_t *im = &igmp_main;
82 igmp_proxy_device_t *proxy_device;
83 igmp_config_t *config;
88 mfib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, sw_if_index);
90 return VNET_API_ERROR_INVALID_INTERFACE;
91 if (vrf_id != mfib_table_get (mfib_index, FIB_PROTOCOL_IP4)->mft_table_id)
92 return VNET_API_ERROR_INVALID_INTERFACE;
94 /* check IGMP configuration */
95 config = igmp_config_lookup (sw_if_index);
97 return VNET_API_ERROR_INVALID_INTERFACE;
98 if (config->mode != IGMP_MODE_HOST)
99 return VNET_API_ERROR_INVALID_INTERFACE;
101 proxy_device = igmp_proxy_device_lookup (vrf_id);
102 if (!proxy_device && add)
104 vec_validate_init_empty (im->igmp_proxy_device_by_vrf_id, vrf_id, ~0);
105 pool_get (im->proxy_devices, proxy_device);
106 im->igmp_proxy_device_by_vrf_id[vrf_id] =
107 proxy_device - im->proxy_devices;
108 clib_memset (proxy_device, 0, sizeof (igmp_proxy_device_t));
109 proxy_device->vrf_id = vrf_id;
110 proxy_device->upstream_if = sw_if_index;
111 config->proxy_device_id = vrf_id;
112 /* lock mfib table */
113 mfib_table_lock (mfib_index, FIB_PROTOCOL_IP4, MFIB_SOURCE_IGMP);
115 else if (proxy_device && !add)
117 while (vec_len (proxy_device->downstream_ifs) > 0)
119 igmp_proxy_device_add_del_interface (vrf_id,
120 proxy_device->downstream_ifs
123 vec_free (proxy_device->downstream_ifs);
124 proxy_device->downstream_ifs = NULL;
125 im->igmp_proxy_device_by_vrf_id[vrf_id] = ~0;
126 pool_put (im->proxy_devices, proxy_device);
127 config->proxy_device_id = ~0;
128 /* clear proxy database */
129 igmp_clear_config (config);
130 /* unlock mfib table */
131 mfib_table_unlock (mfib_index, FIB_PROTOCOL_IP4, MFIB_SOURCE_IGMP);
140 igmp_proxy_device_add_del_interface (u32 vrf_id, u32 sw_if_index, u8 add)
142 igmp_proxy_device_t *proxy_device;
146 proxy_device = igmp_proxy_device_lookup (vrf_id);
152 mfib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, sw_if_index);
153 if (mfib_index == ~0)
154 return VNET_API_ERROR_INVALID_INTERFACE;
155 if (vrf_id != mfib_table_get (mfib_index, FIB_PROTOCOL_IP4)->mft_table_id)
156 return VNET_API_ERROR_INVALID_INTERFACE;
158 /* check IGMP configuration */
159 igmp_config_t *config;
160 config = igmp_config_lookup (sw_if_index);
162 return VNET_API_ERROR_INVALID_INTERFACE;
163 if (config->mode != IGMP_MODE_ROUTER)
164 return VNET_API_ERROR_INVALID_INTERFACE;
168 if (proxy_device->downstream_ifs)
170 index = vec_search (proxy_device->downstream_ifs, sw_if_index);
174 vec_add1 (proxy_device->downstream_ifs, sw_if_index);
175 config->proxy_device_id = vrf_id;
179 if (!proxy_device->downstream_ifs)
181 index = vec_search (proxy_device->downstream_ifs, sw_if_index);
184 /* remove (S,G)s belonging to this interface from proxy database */
185 igmp_proxy_device_merge_config (config, /* block */ 1);
186 vec_del1 (proxy_device->downstream_ifs, index);
187 config->proxy_device_id = ~0;
194 igmp_proxy_device_block_src (igmp_config_t * config, igmp_group_t * group,
197 igmp_proxy_device_t *proxy_device;
198 igmp_config_t *proxy_config;
199 igmp_group_t *proxy_group;
200 igmp_src_t *proxy_src;
203 proxy_device = igmp_proxy_device_lookup (config->proxy_device_id);
207 proxy_config = igmp_config_lookup (proxy_device->upstream_if);
208 ASSERT (proxy_config);
210 proxy_group = igmp_group_lookup (proxy_config, group->key);
211 if (proxy_group == NULL)
214 proxy_src = igmp_src_lookup (proxy_group, src->key);
215 if (proxy_src == NULL)
218 if (vec_len (proxy_src->referance_by_config_index) <= group->config)
220 IGMP_DBG ("proxy block src: invalid config %u", group->config);
223 proxy_src->referance_by_config_index[group->config] = 0;
224 vec_foreach (ref, proxy_src->referance_by_config_index)
230 /* build "Block Old Sources" report */
231 igmp_pkt_build_report_t br;
232 ip46_address_t *srcaddrs = NULL;
234 igmp_pkt_build_report_init (&br, proxy_config->sw_if_index);
235 vec_add1 (srcaddrs, *proxy_src->key);
236 igmp_pkt_report_v3_add_report (&br, proxy_group->key, srcaddrs,
237 IGMP_MEMBERSHIP_GROUP_block_old_sources);
238 igmp_pkt_report_v3_send (&br);
241 igmp_group_src_remove (proxy_group, proxy_src);
242 igmp_src_free (proxy_src);
244 if (igmp_group_n_srcs (proxy_group, IGMP_FILTER_MODE_INCLUDE) == 0)
246 igmp_proxy_device_mfib_path_add_del (proxy_group, 0);
247 igmp_proxy_device_mfib_path_add_del (group, 0);
248 igmp_group_clear (&proxy_group);
253 igmp_proxy_device_merge_src (igmp_group_t ** proxy_group, igmp_src_t * src,
254 ip46_address_t ** srcaddrs, u8 block)
256 igmp_src_t *proxy_src;
259 proxy_src = igmp_src_lookup (*proxy_group, src->key);
261 if (proxy_src == NULL)
265 /* store downstream config index */
266 d_config = igmp_group_get (src->group)->config;
269 igmp_src_alloc (igmp_group_index (*proxy_group), src->key,
272 hash_set_mem ((*proxy_group)->igmp_src_by_key
273 [(*proxy_group)->router_filter_mode], proxy_src->key,
274 igmp_src_index (proxy_src));
276 vec_validate_init_empty (proxy_src->referance_by_config_index, d_config,
278 proxy_src->referance_by_config_index[d_config] = 1;
279 vec_add1 (*srcaddrs, *proxy_src->key);
285 d_config = igmp_group_get (src->group)->config;
286 if (vec_len (proxy_src->referance_by_config_index) <= d_config)
288 IGMP_DBG ("proxy block src: invalid config %u", d_config);
291 proxy_src->referance_by_config_index[d_config] = 0;
293 vec_foreach (ref, proxy_src->referance_by_config_index)
299 vec_add1 (*srcaddrs, *proxy_src->key);
301 igmp_group_src_remove (*proxy_group, proxy_src);
302 igmp_src_free (proxy_src);
304 if (igmp_group_n_srcs (*proxy_group, IGMP_FILTER_MODE_INCLUDE) == 0)
306 igmp_proxy_device_mfib_path_add_del (*proxy_group, 0);
307 igmp_group_clear (proxy_group);
311 d_config = igmp_group_get (src->group)->config;
312 vec_validate (proxy_src->referance_by_config_index, d_config);
313 proxy_src->referance_by_config_index[d_config] = 1;
318 always_inline igmp_group_t *
319 igmp_proxy_device_merge_group (igmp_proxy_device_t * proxy_device,
320 igmp_group_t * group,
321 ip46_address_t ** srcaddrs, u8 block)
323 igmp_config_t *proxy_config;
324 igmp_group_t *proxy_group;
327 proxy_config = igmp_config_lookup (proxy_device->upstream_if);
328 ALWAYS_ASSERT (proxy_config);
330 proxy_group = igmp_group_lookup (proxy_config, group->key);
335 u32 tmp = igmp_group_index (group);
337 igmp_group_alloc (proxy_config, group->key,
338 group->router_filter_mode);
339 igmp_proxy_device_mfib_path_add_del (proxy_group, 1);
340 group = igmp_group_get (tmp);
344 igmp_proxy_device_mfib_path_add_del (group, 0);
347 FOR_EACH_SRC (src, group, group->router_filter_mode,
349 igmp_proxy_device_merge_src (&proxy_group, src, srcaddrs, block);
355 igmp_proxy_device_merge_config (igmp_config_t * config, u8 block)
357 igmp_proxy_device_t *proxy_device;
359 igmp_group_t *proxy_group;
360 ip46_address_t *srcaddrs = NULL;
361 igmp_pkt_build_report_t br;
363 proxy_device = igmp_proxy_device_lookup (config->proxy_device_id);
367 igmp_pkt_build_report_init (&br, proxy_device->upstream_if);
369 FOR_EACH_GROUP(group, config,
371 proxy_group = igmp_proxy_device_merge_group (proxy_device, group, &srcaddrs, block);
373 if ((vec_len(srcaddrs) > 0) && proxy_group)
375 igmp_pkt_report_v3_add_report (&br, proxy_group->key, srcaddrs,
376 block ? IGMP_MEMBERSHIP_GROUP_block_old_sources :
377 IGMP_MEMBERSHIP_GROUP_allow_new_sources);
382 igmp_pkt_report_v3_send (&br);
387 * fd.io coding-style-patch-verification: ON
390 * eval: (c-set-style "gnu")