--- /dev/null
+/*
+ *------------------------------------------------------------------
+ * Copyright (c) 2018 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 <vlib/vlib.h>
+#include <vnet/mfib/mfib_entry.h>
+#include <vnet/mfib/mfib_table.h>
+
+#include <igmp/igmp_proxy.h>
+#include <igmp/igmp.h>
+#include <igmp/igmp_pkt.h>
+
+void
+igmp_proxy_device_mfib_path_add_del (igmp_group_t * group, u8 add)
+{
+ igmp_config_t *config;
+ u32 mfib_index;
+
+ config = igmp_config_get (group->config);
+ mfib_index =
+ mfib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4,
+ config->sw_if_index);
+
+ /* *INDENT-OFF* */
+ mfib_prefix_t mpfx_group_addr = {
+ .fp_proto = FIB_PROTOCOL_IP4,
+ .fp_len = 32,
+ .fp_grp_addr = {
+ .ip4 = (*group->key).ip4,
+ },
+ };
+ fib_route_path_t via_itf_path =
+ {
+ .frp_proto = fib_proto_to_dpo (FIB_PROTOCOL_IP4),
+ .frp_addr = zero_addr,
+ .frp_sw_if_index = config->sw_if_index,
+ .frp_fib_index = 0,
+ .frp_weight = 1,
+ };
+ /* *INDENT-ON* */
+
+ if (add)
+ mfib_table_entry_path_update (mfib_index, &mpfx_group_addr,
+ MFIB_SOURCE_IGMP, &via_itf_path,
+ MFIB_ITF_FLAG_FORWARD);
+ else
+ mfib_table_entry_path_remove (mfib_index, &mpfx_group_addr,
+ MFIB_SOURCE_IGMP, &via_itf_path);
+}
+
+igmp_proxy_device_t *
+igmp_proxy_device_lookup (u32 vrf_id)
+{
+ igmp_main_t *im = &igmp_main;
+
+ if (vec_len (im->igmp_proxy_device_by_vrf_id) > vrf_id)
+ {
+ u32 index;
+ index = im->igmp_proxy_device_by_vrf_id[vrf_id];
+ if (index != ~0)
+ return (vec_elt_at_index (im->proxy_devices, index));
+ }
+ return NULL;
+}
+
+int
+igmp_proxy_device_add_del (u32 vrf_id, u32 sw_if_index, u8 add)
+{
+ igmp_main_t *im = &igmp_main;
+ igmp_proxy_device_t *proxy_device;
+ igmp_config_t *config;
+ u32 mfib_index;
+
+ /* check VRF id */
+ mfib_index =
+ mfib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, sw_if_index);
+ if (mfib_index == ~0)
+ return VNET_API_ERROR_INVALID_INTERFACE;
+ if (vrf_id != mfib_table_get (mfib_index, FIB_PROTOCOL_IP4)->mft_table_id)
+ return VNET_API_ERROR_INVALID_INTERFACE;
+
+ /* check IGMP configuration */
+ config = igmp_config_lookup (sw_if_index);
+ if (!config)
+ return VNET_API_ERROR_INVALID_INTERFACE;
+ if (config->mode != IGMP_MODE_HOST)
+ return VNET_API_ERROR_INVALID_INTERFACE;
+
+ proxy_device = igmp_proxy_device_lookup (vrf_id);
+ if (!proxy_device && add)
+ {
+ vec_validate_init_empty (im->igmp_proxy_device_by_vrf_id, vrf_id, ~0);
+ pool_get (im->proxy_devices, proxy_device);
+ im->igmp_proxy_device_by_vrf_id[vrf_id] =
+ proxy_device - im->proxy_devices;
+ memset (proxy_device, 0, sizeof (igmp_proxy_device_t));
+ proxy_device->vrf_id = vrf_id;
+ proxy_device->upstream_if = sw_if_index;
+ config->proxy_device_id = vrf_id;
+ /* lock mfib table */
+ mfib_table_lock (mfib_index, FIB_PROTOCOL_IP4, MFIB_SOURCE_IGMP);
+ }
+ else if (proxy_device && !add)
+ {
+ while (vec_len (proxy_device->downstream_ifs) > 0)
+ {
+ igmp_proxy_device_add_del_interface (vrf_id,
+ proxy_device->downstream_ifs
+ [0], 0);
+ }
+ vec_free (proxy_device->downstream_ifs);
+ proxy_device->downstream_ifs = NULL;
+ im->igmp_proxy_device_by_vrf_id[vrf_id] = ~0;
+ pool_put (im->proxy_devices, proxy_device);
+ config->proxy_device_id = ~0;
+ /* clear proxy database */
+ igmp_clear_config (config);
+ /* unlock mfib table */
+ mfib_table_unlock (mfib_index, FIB_PROTOCOL_IP4, MFIB_SOURCE_IGMP);
+ }
+ else
+ return -1;
+
+ return 0;
+}
+
+int
+igmp_proxy_device_add_del_interface (u32 vrf_id, u32 sw_if_index, u8 add)
+{
+ igmp_proxy_device_t *proxy_device;
+ u32 index;
+ u32 mfib_index;
+
+ proxy_device = igmp_proxy_device_lookup (vrf_id);
+ if (!proxy_device)
+ return -1;
+
+ /* check VRF id */
+ mfib_index =
+ mfib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, sw_if_index);
+ if (mfib_index == ~0)
+ return VNET_API_ERROR_INVALID_INTERFACE;
+ if (vrf_id != mfib_table_get (mfib_index, FIB_PROTOCOL_IP4)->mft_table_id)
+ return VNET_API_ERROR_INVALID_INTERFACE;
+
+ /* check IGMP configuration */
+ igmp_config_t *config;
+ config = igmp_config_lookup (sw_if_index);
+ if (!config)
+ return VNET_API_ERROR_INVALID_INTERFACE;
+ if (config->mode != IGMP_MODE_ROUTER)
+ return VNET_API_ERROR_INVALID_INTERFACE;
+
+ if (add)
+ {
+ if (proxy_device->downstream_ifs)
+ {
+ index = vec_search (proxy_device->downstream_ifs, sw_if_index);
+ if (index != ~0)
+ return -1;
+ }
+ vec_add1 (proxy_device->downstream_ifs, sw_if_index);
+ config->proxy_device_id = vrf_id;
+ }
+ else
+ {
+ if (!proxy_device->downstream_ifs)
+ return -2;
+ index = vec_search (proxy_device->downstream_ifs, sw_if_index);
+ if (index == ~0)
+ return -3;
+ /* remove (S,G)s belonging to this interface from proxy database */
+ igmp_proxy_device_merge_config (config, /* block */ 1);
+ vec_del1 (proxy_device->downstream_ifs, index);
+ config->proxy_device_id = ~0;
+ }
+
+ return 0;
+}
+
+void
+igmp_proxy_device_block_src (igmp_config_t * config, igmp_group_t * group,
+ igmp_src_t * src)
+{
+ igmp_proxy_device_t *proxy_device;
+ igmp_config_t *proxy_config;
+ igmp_group_t *proxy_group;
+ igmp_src_t *proxy_src;
+ u8 *ref;
+
+ proxy_device = igmp_proxy_device_lookup (config->proxy_device_id);
+ if (!proxy_device)
+ return;
+
+ proxy_config = igmp_config_lookup (proxy_device->upstream_if);
+ ASSERT (proxy_config);
+
+ proxy_group = igmp_group_lookup (proxy_config, group->key);
+ if (proxy_group == NULL)
+ return;
+
+ proxy_src = igmp_src_lookup (proxy_group, src->key);
+ if (proxy_src == NULL)
+ return;
+
+ if (vec_len (proxy_src->referance_by_config_index) <= group->config)
+ {
+ IGMP_DBG ("proxy block src: invalid config %u", group->config);
+ return;
+ }
+ proxy_src->referance_by_config_index[group->config] = 0;
+ vec_foreach (ref, proxy_src->referance_by_config_index)
+ {
+ if ((*ref) > 0)
+ return;
+ }
+
+ /* build "Block Old Sources" report */
+ igmp_pkt_build_report_t br;
+ ip46_address_t *srcaddrs = NULL;
+
+ igmp_pkt_build_report_init (&br, proxy_config->sw_if_index);
+ vec_add1 (srcaddrs, *proxy_src->key);
+ igmp_pkt_report_v3_add_report (&br, proxy_group->key, srcaddrs,
+ IGMP_MEMBERSHIP_GROUP_block_old_sources);
+ igmp_pkt_report_v3_send (&br);
+
+
+ igmp_group_src_remove (proxy_group, proxy_src);
+ igmp_src_free (proxy_src);
+
+ if (igmp_group_n_srcs (proxy_group, IGMP_FILTER_MODE_INCLUDE) == 0)
+ {
+ igmp_proxy_device_mfib_path_add_del (proxy_group, 0);
+ igmp_proxy_device_mfib_path_add_del (group, 0);
+ igmp_group_clear (proxy_group);
+ }
+}
+
+always_inline void
+igmp_proxy_device_merge_src (igmp_group_t * proxy_group, igmp_src_t * src,
+ ip46_address_t ** srcaddrs, u8 block)
+{
+ igmp_src_t *proxy_src;
+ u32 d_config;
+
+ proxy_src = igmp_src_lookup (proxy_group, src->key);
+
+ if (proxy_src == NULL)
+ {
+ if (block)
+ return;
+ /* store downstream config index */
+ d_config = igmp_group_get (src->group)->config;
+
+ proxy_src =
+ igmp_src_alloc (igmp_group_index (proxy_group), src->key,
+ IGMP_MODE_HOST);
+
+ hash_set_mem (proxy_group->igmp_src_by_key
+ [proxy_group->router_filter_mode], proxy_src->key,
+ igmp_src_index (proxy_src));
+
+ vec_validate_init_empty (proxy_src->referance_by_config_index, d_config,
+ 0);
+ proxy_src->referance_by_config_index[d_config] = 1;
+ vec_add1 (*srcaddrs, *proxy_src->key);
+ }
+ else
+ {
+ if (block)
+ {
+ d_config = igmp_group_get (src->group)->config;
+ if (vec_len (proxy_src->referance_by_config_index) <= d_config)
+ {
+ IGMP_DBG ("proxy block src: invalid config %u", d_config);
+ return;
+ }
+ proxy_src->referance_by_config_index[d_config] = 0;
+ u8 *ref;
+ vec_foreach (ref, proxy_src->referance_by_config_index)
+ {
+ if ((*ref) > 0)
+ return;
+ }
+
+ vec_add1 (*srcaddrs, *proxy_src->key);
+
+ igmp_group_src_remove (proxy_group, proxy_src);
+ igmp_src_free (proxy_src);
+
+ if (igmp_group_n_srcs (proxy_group, IGMP_FILTER_MODE_INCLUDE) == 0)
+ {
+ igmp_proxy_device_mfib_path_add_del (proxy_group, 0);
+ igmp_group_clear (proxy_group);
+ }
+ return;
+ }
+ d_config = igmp_group_get (src->group)->config;
+ vec_validate (proxy_src->referance_by_config_index, d_config);
+ proxy_src->referance_by_config_index[d_config] = 1;
+ return;
+ }
+}
+
+always_inline igmp_group_t *
+igmp_proxy_device_merge_group (igmp_proxy_device_t * proxy_device,
+ igmp_group_t * group,
+ ip46_address_t ** srcaddrs, u8 block)
+{
+ igmp_config_t *proxy_config;
+ igmp_group_t *proxy_group;
+ igmp_src_t *src;
+
+ proxy_config = igmp_config_lookup (proxy_device->upstream_if);
+ ASSERT (proxy_config);
+
+ proxy_group = igmp_group_lookup (proxy_config, group->key);
+ if (!proxy_group)
+ {
+ if (block)
+ return NULL;
+ u32 tmp = igmp_group_index (group);
+ proxy_group =
+ igmp_group_alloc (proxy_config, group->key,
+ group->router_filter_mode);
+ igmp_proxy_device_mfib_path_add_del (proxy_group, 1);
+ group = igmp_group_get (tmp);
+ }
+ if (block)
+ {
+ igmp_proxy_device_mfib_path_add_del (group, 0);
+ }
+
+ /* *INDENT-OFF* */
+ FOR_EACH_SRC (src, group, group->router_filter_mode,
+ ({
+ igmp_proxy_device_merge_src (proxy_group, src, srcaddrs, block);
+ }));
+ /* *INDENT-ON* */
+ return proxy_group;
+}
+
+void
+igmp_proxy_device_merge_config (igmp_config_t * config, u8 block)
+{
+ igmp_proxy_device_t *proxy_device;
+ igmp_group_t *group;
+ igmp_group_t *proxy_group;
+ ip46_address_t *srcaddrs = NULL;
+ igmp_pkt_build_report_t br;
+
+ proxy_device = igmp_proxy_device_lookup (config->proxy_device_id);
+ if (!proxy_device)
+ return;
+
+ igmp_pkt_build_report_init (&br, proxy_device->upstream_if);
+
+ /* *INDENT-OFF* */
+ FOR_EACH_GROUP(group, config,
+ ({
+ proxy_group = igmp_proxy_device_merge_group (proxy_device, group, &srcaddrs, block);
+
+ if ((vec_len(srcaddrs) > 0) && proxy_group)
+ {
+ igmp_pkt_report_v3_add_report (&br, proxy_group->key, srcaddrs,
+ block ? IGMP_MEMBERSHIP_GROUP_block_old_sources :
+ IGMP_MEMBERSHIP_GROUP_allow_new_sources);
+ }
+ vec_free (srcaddrs);
+ }));
+ /* *INDENT-ON* */
+
+ igmp_pkt_report_v3_send (&br);
+
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / blobdiff