From 03c254ec70917290b2fde27de1e7b37abe508ade Mon Sep 17 00:00:00 2001 From: Neale Ranns Date: Tue, 17 Mar 2020 14:25:10 +0000 Subject: fib: Always install all routers mcast addresses Type: improvement Signed-off-by: Neale Ranns Change-Id: Ia8dff15855a81cf29729bdaa3ff28fbe3254fa97 --- src/plugins/igmp/test/test_igmp.py | 6 +- src/plugins/unittest/fib_test.c | 8 +-- src/plugins/unittest/mfib_test.c | 2 +- src/vnet/ip/ip4_forward.c | 3 + src/vnet/ip/ip_punt_drop.c | 2 +- src/vnet/mfib/ip4_mfib.c | 109 +++++++++++++++++++++++++++---------- src/vnet/mfib/ip4_mfib.h | 7 +++ src/vnet/mfib/mfib_types.h | 2 + 8 files changed, 101 insertions(+), 38 deletions(-) (limited to 'src') diff --git a/src/plugins/igmp/test/test_igmp.py b/src/plugins/igmp/test/test_igmp.py index 1974794f058..01f59bae024 100644 --- a/src/plugins/igmp/test/test_igmp.py +++ b/src/plugins/igmp/test/test_igmp.py @@ -90,10 +90,10 @@ class TestIgmp(VppTestCase): self.vapi.igmp_enable_disable(self.pg2.sw_if_index, 0, IGMP_MODE.HOST) self.vapi.igmp_enable_disable(self.pg3.sw_if_index, 0, IGMP_MODE.HOST) - self.assertFalse(find_mroute(self, "224.0.0.1", "0.0.0.0", 32)) + self.assertTrue(find_mroute(self, "224.0.0.1", "0.0.0.0", 32)) self.assertFalse(find_mroute(self, "224.0.0.22", "0.0.0.0", 32)) - self.assertFalse(find_mroute(self, "224.0.0.1", "0.0.0.0", 32, - table_id=1)) + self.assertTrue(find_mroute(self, "224.0.0.1", "0.0.0.0", 32, + table_id=1)) self.assertFalse(find_mroute(self, "224.0.0.22", "0.0.0.0", 32, table_id=1)) diff --git a/src/plugins/unittest/fib_test.c b/src/plugins/unittest/fib_test.c index 2d75f28a8ca..d86ccb173dc 100644 --- a/src/plugins/unittest/fib_test.c +++ b/src/plugins/unittest/fib_test.c @@ -845,11 +845,11 @@ fib_test_v4 (void) * at this stage there are 5 entries in the test FIB (plus 5 in the default), * all of which are special sourced and so none of which share path-lists. * There are also 2 entries, and 2 non-shared path-lists, in the v6 default - * table, and 4 path-lists in the v6 MFIB table + * table, and 4 path-lists in the v6 MFIB table and 2 in v4. */ #define ENBR (5+5+2) - u32 PNBR = 5+5+2+4; + u32 PNBR = 5+5+2+4+2; /* * if the IGMP plugin is loaded this adds two more entries to the v4 MFIB @@ -4441,11 +4441,11 @@ fib_test_v6 (void) /* * At this stage there is one v4 FIB with 5 routes and two v6 FIBs - * each with 2 entries and a v6 mfib with 4 path-lists. + * each with 2 entries and a v6 mfib with 4 path-lists and v4 mfib with 2. * All entries are special so no path-list sharing. */ #define ENPS (5+4) - u32 PNPS = (5+4+4); + u32 PNPS = (5+4+4+2); /* * if the IGMP plugin is loaded this adds two more entries to the v4 MFIB */ diff --git a/src/plugins/unittest/mfib_test.c b/src/plugins/unittest/mfib_test.c index 2497a299c50..764e1837653 100644 --- a/src/plugins/unittest/mfib_test.c +++ b/src/plugins/unittest/mfib_test.c @@ -1279,7 +1279,7 @@ mfib_test_i (fib_protocol_t PROTO, /* * Unlock the table - it's the last lock so should be gone thereafter */ - MFIB_TEST(((PROTO == FIB_PROTOCOL_IP4 ? 1 : 5) == + MFIB_TEST(((PROTO == FIB_PROTOCOL_IP4 ? 3 : 5) == mfib_table_get_n_routes(fib_index, PROTO)), "1 = %d route left in the FIB", mfib_table_get_n_routes(fib_index, PROTO)); diff --git a/src/vnet/ip/ip4_forward.c b/src/vnet/ip/ip4_forward.c index 95db9314d9b..7471a001e7a 100644 --- a/src/vnet/ip/ip4_forward.c +++ b/src/vnet/ip/ip4_forward.c @@ -49,6 +49,7 @@ #include /* for FIB table and entry creation */ #include /* for FIB uRPF check */ #include +#include #include #include #include @@ -761,6 +762,7 @@ ip4_add_del_interface_address_internal (vlib_main_t * vm, goto done; ip4_sw_interface_enable_disable (sw_if_index, !is_del); + ip4_mfib_interface_enable_disable (sw_if_index, !is_del); /* intf addr routes are added/deleted on admin up/down */ if (vnet_sw_interface_is_admin_up (vnm, sw_if_index)) @@ -1061,6 +1063,7 @@ ip4_sw_interface_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_add) ip4_add_del_interface_address(vm, sw_if_index, address, ia->address_length, 1); })); /* *INDENT-ON* */ + ip4_mfib_interface_enable_disable (sw_if_index, 0); } vnet_feature_enable_disable ("ip4-unicast", "ip4-not-enabled", sw_if_index, diff --git a/src/vnet/ip/ip_punt_drop.c b/src/vnet/ip/ip_punt_drop.c index 01577a472ce..ce1631fd2f1 100644 --- a/src/vnet/ip/ip_punt_drop.c +++ b/src/vnet/ip/ip_punt_drop.c @@ -29,7 +29,7 @@ format_ip_punt_redirect_trace (u8 * s, va_list * args) ip_punt_redirect_trace_t *t = va_arg (*args, ip_punt_redirect_trace_t *); if (INDEX_INVALID == t->rrxi) - s = format (s, "drop"); + s = format (s, "ignore"); else s = format (s, "via redirect:%d", t->rrxi); diff --git a/src/vnet/mfib/ip4_mfib.c b/src/vnet/mfib/ip4_mfib.c index 4da1be61113..6973380ec06 100644 --- a/src/vnet/mfib/ip4_mfib.c +++ b/src/vnet/mfib/ip4_mfib.c @@ -18,16 +18,27 @@ #include #include -static const mfib_prefix_t ip4_specials[] = { +static const mfib_prefix_t all_zeros = +{ + .fp_proto = FIB_PROTOCOL_IP4, +}; +static const mfib_prefix_t ip4_specials[] = +{ + /* ALL prefixes are in network order */ { - /* (*,*)/0 */ - .fp_src_addr = { - .ip4.data_u32 = 0, + /* (*,224.0.0.1)/32 - all hosts */ + .fp_grp_addr = { + .ip4.data_u32 = 0x010000e0, }, + .fp_len = 32, + .fp_proto = FIB_PROTOCOL_IP4, + }, + { + /* (*,224.0.0.2)/32 - all routers */ .fp_grp_addr = { - .ip4.data_u32 = 0, + .ip4.data_u32 = 0x020000e0, }, - .fp_len = 0, + .fp_len = 32, .fp_proto = FIB_PROTOCOL_IP4, }, }; @@ -57,24 +68,31 @@ ip4_create_mfib_with_table_id (u32 table_id, mfib_table_lock(mfib_table->mft_index, FIB_PROTOCOL_IP4, src); /* - * add the special entries into the new FIB + * add the default route into the new FIB */ + mfib_table_entry_update(mfib_table->mft_index, + &all_zeros, + MFIB_SOURCE_DEFAULT_ROUTE, + MFIB_RPF_ID_NONE, + MFIB_ENTRY_FLAG_DROP); + + const fib_route_path_t path = { + .frp_proto = DPO_PROTO_IP4, + .frp_addr = zero_addr, + .frp_sw_if_index = ~0, + .frp_fib_index = ~0, + .frp_weight = 1, + .frp_flags = FIB_ROUTE_PATH_LOCAL, + .frp_mitf_flags = MFIB_ITF_FLAG_FORWARD, + }; int ii; for (ii = 0; ii < ARRAY_LEN(ip4_specials); ii++) { - mfib_prefix_t prefix = ip4_specials[ii]; - - prefix.fp_src_addr.ip4.data_u32 = - clib_host_to_net_u32(prefix.fp_src_addr.ip4.data_u32); - prefix.fp_grp_addr.ip4.data_u32 = - clib_host_to_net_u32(prefix.fp_grp_addr.ip4.data_u32); - - mfib_table_entry_update(mfib_table->mft_index, - &prefix, - MFIB_SOURCE_DEFAULT_ROUTE, - MFIB_RPF_ID_NONE, - MFIB_ENTRY_FLAG_DROP); + mfib_table_entry_path_update(mfib_table->mft_index, + &ip4_specials[ii], + MFIB_SOURCE_SPECIAL, + &path); } return (mfib_table->mft_index); @@ -89,18 +107,15 @@ ip4_mfib_table_destroy (ip4_mfib_t *mfib) /* * remove all the specials we added when the table was created. */ + mfib_table_entry_delete(mfib_table->mft_index, + &all_zeros, + MFIB_SOURCE_DEFAULT_ROUTE); + for (ii = 0; ii < ARRAY_LEN(ip4_specials); ii++) { - fib_node_index_t mfei; - mfib_prefix_t prefix = ip4_specials[ii]; - - prefix.fp_src_addr.ip4.data_u32 = - clib_host_to_net_u32(prefix.fp_src_addr.ip4.data_u32); - prefix.fp_grp_addr.ip4.data_u32 = - clib_host_to_net_u32(prefix.fp_grp_addr.ip4.data_u32); - - mfei = mfib_table_lookup(mfib_table->mft_index, &prefix); - mfib_table_entry_delete_index(mfei, MFIB_SOURCE_DEFAULT_ROUTE); + mfib_table_entry_delete(mfib_table->mft_index, + &ip4_specials[ii], + MFIB_SOURCE_SPECIAL); } /* @@ -113,6 +128,42 @@ ip4_mfib_table_destroy (ip4_mfib_t *mfib) pool_put(ip4_main.mfibs, mfib_table); } +void +ip4_mfib_interface_enable_disable (u32 sw_if_index, int is_enable) +{ + const fib_route_path_t path = { + .frp_proto = DPO_PROTO_IP4, + .frp_addr = zero_addr, + .frp_sw_if_index = sw_if_index, + .frp_fib_index = ~0, + .frp_weight = 1, + .frp_mitf_flags = MFIB_ITF_FLAG_ACCEPT, + }; + u32 mfib_index; + int ii; + + vec_validate (ip4_main.mfib_index_by_sw_if_index, sw_if_index); + mfib_index = ip4_mfib_table_get_index_for_sw_if_index(sw_if_index); + + for (ii = 0; ii < ARRAY_LEN(ip4_specials); ii++) + { + if (is_enable) + { + mfib_table_entry_path_update(mfib_index, + &ip4_specials[ii], + MFIB_SOURCE_SPECIAL, + &path); + } + else + { + mfib_table_entry_path_remove(mfib_index, + &ip4_specials[ii], + MFIB_SOURCE_SPECIAL, + &path); + } + } +} + u32 ip4_mfib_table_find_or_create_and_lock (u32 table_id, mfib_source_t src) diff --git a/src/vnet/mfib/ip4_mfib.h b/src/vnet/mfib/ip4_mfib.h index 5b225596469..2e263a497d2 100644 --- a/src/vnet/mfib/ip4_mfib.h +++ b/src/vnet/mfib/ip4_mfib.h @@ -55,6 +55,13 @@ extern void ip4_mfib_table_entry_insert(ip4_mfib_t *fib, fib_node_index_t fib_entry_index); extern void ip4_mfib_table_destroy(ip4_mfib_t *fib); +/** + * @brief + * Add/remove the interface from the accepting list of the special MFIB entries + */ +extern void ip4_mfib_interface_enable_disable(u32 sw_if_index, + int is_enable); + /** * @brief Get the FIB at the given index */ diff --git a/src/vnet/mfib/mfib_types.h b/src/vnet/mfib/mfib_types.h index 650a7a5c3f9..edc25fe5b99 100644 --- a/src/vnet/mfib/mfib_types.h +++ b/src/vnet/mfib/mfib_types.h @@ -172,6 +172,7 @@ typedef enum mfib_source_t_ MFIB_SOURCE_GENEVE, MFIB_SOURCE_IGMP, MFIB_SOURCE_VXLAN_GBP, + MFIB_SOURCE_PLUGIN_LOW, MFIB_SOURCE_RR, MFIB_SOURCE_DEFAULT_ROUTE, } mfib_source_t; @@ -189,6 +190,7 @@ typedef enum mfib_source_t_ [MFIB_SOURCE_GENEVE] = "Geneve", \ [MFIB_SOURCE_IGMP] = "IGMP", \ [MFIB_SOURCE_VXLAN_GBP] = "VXLAN-GBP", \ + [MFIB_SOURCE_PLUGIN_LOW] = "plugin-low", \ [MFIB_SOURCE_RR] = "Recursive-resolution", \ [MFIB_SOURCE_DEFAULT_ROUTE] = "Default Route", \ } -- cgit 1.2.3-korg