/* * Copyright (c) 2016 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * Add debugs for passing tests */ static int bier_test_do_debug; #define BIER_TEST_I(_cond, _comment, _args...) \ ({ \ int _evald = (_cond); \ if (!(_evald)) { \ fformat(stderr, "FAIL:%d: " _comment "\n", \ __LINE__, ##_args); \ } else { \ if (bier_test_do_debug) \ fformat(stderr, "PASS:%d: " _comment "\n", \ __LINE__, ##_args); \ } \ _evald; \ }) #define BIER_TEST(_cond, _comment, _args...) \ { \ if (!BIER_TEST_I(_cond, _comment, ##_args)) { \ return 1; \ ASSERT(!("FAIL: " _comment)); \ } \ } /** * A 'i'm not fussed is this is not efficient' store of test data */ typedef struct test_main_t_ { /** * HW if indicies */ u32 hw_if_indicies[4]; /** * HW interfaces */ vnet_hw_interface_t * hw[4]; } test_main_t; static test_main_t test_main; /* fake ethernet device class, distinct from "fake-ethX" */ static u8 * format_test_interface_name (u8 * s, va_list * args) { u32 dev_instance = va_arg (*args, u32); return format (s, "test-eth%d", dev_instance); } static uword dummy_interface_tx (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { clib_warning ("you shouldn't be here, leaking buffers..."); return frame->n_vectors; } VNET_DEVICE_CLASS (test_interface_device_class,static) = { .name = "Test interface", .format_device_name = format_test_interface_name, .tx_function = dummy_interface_tx, }; static u8 *hw_address; static int bier_test_mk_intf (u32 ninterfaces) { clib_error_t * error = NULL; test_main_t *tm = &test_main; u8 byte; u32 i; ASSERT(ninterfaces <= ARRAY_LEN(tm->hw_if_indicies)); for (i=0; i<6; i++) { byte = 0xd0+i; vec_add1(hw_address, byte); } for (i = 0; i < ninterfaces; i++) { hw_address[5] = i; error = ethernet_register_interface(vnet_get_main(), test_interface_device_class.index, i /* instance */, hw_address, &tm->hw_if_indicies[i], /* flag change */ 0); BIER_TEST((NULL == error), "ADD interface %d", i); tm->hw[i] = vnet_get_hw_interface(vnet_get_main(), tm->hw_if_indicies[i]); vec_validate (ip4_main.fib_index_by_sw_if_index, tm->hw[i]->sw_if_index); vec_validate (ip6_main.fib_index_by_sw_if_index, tm->hw[i]->sw_if_index); ip4_main.fib_index_by_sw_if_index[tm->hw[i]->sw_if_index] = 0; ip6_main.fib_index_by_sw_if_index[tm->hw[i]->sw_if_index] = 0; error = vnet_sw_interface_set_flags(vnet_get_main(), tm->hw[i]->sw_if_index, VNET_SW_INTERFACE_FLAG_ADMIN_UP); BIER_TEST((NULL == error), "UP interface %d", i); } /* * re-eval after the inevitable realloc */ for (i = 0; i < ninterfaces; i++) { tm->hw[i] = vnet_get_hw_interface(vnet_get_main(), tm->hw_if_indicies[i]); } return (0); } #define BIER_TEST_LB(_cond, _comment, _args...) \ { \ if (!BIER_TEST_I(_cond, _comment, ##_args)) { \ return (0); \ } \ } static int bier_test_validate_entry (index_t bei, u16 n_buckets, ...) { dpo_id_t dpo = DPO_INVALID; const load_balance_t *lb; va_list ap; int res; va_start(ap, n_buckets); bier_entry_contribute_forwarding(bei, &dpo); BIER_TEST_LB((DPO_LOAD_BALANCE == dpo.dpoi_type), "Entry links to %U", format_dpo_type, dpo.dpoi_type); lb = load_balance_get(dpo.dpoi_index); res = fib_test_validate_lb_v(lb, n_buckets, &ap); dpo_reset(&dpo); va_end(ap); return (res); } static int bier_test_mpls_spf (void) { fib_node_index_t lfei, fei, bti; u32 mpls_fib_index; test_main_t *tm; int lb_count; lb_count = pool_elts(load_balance_pool); tm = &test_main; #define N_BIER_ECMP_TABLES 16 int ii; /* * Add the BIER Main table */ const bier_table_id_t bt_0_0_0_256 = { .bti_set = 0, .bti_sub_domain = 0, .bti_hdr_len = BIER_HDR_LEN_256, .bti_type = BIER_TABLE_MPLS_SPF, .bti_ecmp = BIER_ECMP_TABLE_ID_MAIN, }; bti = bier_table_add_or_lock(&bt_0_0_0_256, 1600); fib_test_lb_bucket_t l_o_bt[N_BIER_ECMP_TABLES]; bier_table_id_t bt_ecmp_0_0_0_256 = bt_0_0_0_256; for (ii = 0; ii < N_BIER_ECMP_TABLES; ii++) { bt_ecmp_0_0_0_256.bti_ecmp = ii; l_o_bt[ii].type = FT_LB_BIER_TABLE; l_o_bt[ii].bier.table = bier_table_ecmp_create_and_lock(&bt_ecmp_0_0_0_256); }; const fib_prefix_t pfx_1600_neos = { .fp_len = 21, .fp_proto = FIB_PROTOCOL_MPLS, .fp_label = 1600, .fp_eos = MPLS_NON_EOS, .fp_payload_proto = DPO_PROTO_BIER, }; const fib_prefix_t pfx_1600_eos = { .fp_len = 21, .fp_proto = FIB_PROTOCOL_MPLS, .fp_label = 1600, .fp_eos = MPLS_EOS, .fp_payload_proto = DPO_PROTO_BIER, }; mpls_fib_index = fib_table_find(FIB_PROTOCOL_MPLS, MPLS_FIB_DEFAULT_TABLE_ID); lfei = fib_table_lookup(mpls_fib_index, &pfx_1600_neos); BIER_TEST(FIB_NODE_INDEX_INVALID == lfei, "1600/0 is not present"); lfei = fib_table_lookup(mpls_fib_index, &pfx_1600_eos); BIER_TEST(fib_test_validate_entry(lfei, FIB_FORW_CHAIN_TYPE_MPLS_EOS, 16, &l_o_bt[0], &l_o_bt[1], &l_o_bt[2], &l_o_bt[3], &l_o_bt[4], &l_o_bt[5], &l_o_bt[6], &l_o_bt[7], &l_o_bt[8], &l_o_bt[9], &l_o_bt[10], &l_o_bt[11], &l_o_bt[12], &l_o_bt[13], &l_o_bt[14], &l_o_bt[15]), "1600/1 LB stacks on BIER table %d", bti); /* * modify the table's local label - keep the lock count accurate */ const fib_prefix_t pfx_1601_eos = { .fp_len = 21, .fp_proto = FIB_PROTOCOL_MPLS, .fp_label = 1601, .fp_eos = MPLS_EOS, .fp_payload_proto = DPO_PROTO_BIER, }; bti = bier_table_add_or_lock(&bt_0_0_0_256, 1601); bier_table_unlock(&bt_0_0_0_256); lfei = fib_table_lookup(mpls_fib_index, &pfx_1600_eos); BIER_TEST(FIB_NODE_INDEX_INVALID == lfei, "1600/1 is deleted"); lfei = fib_table_lookup(mpls_fib_index, &pfx_1601_eos); BIER_TEST(fib_test_validate_entry(lfei, FIB_FORW_CHAIN_TYPE_MPLS_EOS, 16, &l_o_bt[0], &l_o_bt[1], &l_o_bt[2], &l_o_bt[3], &l_o_bt[4], &l_o_bt[5], &l_o_bt[6], &l_o_bt[7], &l_o_bt[8], &l_o_bt[9], &l_o_bt[10], &l_o_bt[11], &l_o_bt[12], &l_o_bt[13], &l_o_bt[14], &l_o_bt[15]), "1601/1 LB stacks on BIER table %d", bti); /* * add a route to the table. the via IP route does not exist. */ const ip46_address_t nh_1_1_1_1 = { .ip4 = { .as_u32 = clib_host_to_net_u32(0x01010101), }, }; fib_route_path_t *paths_1_1_1_1 = NULL; fib_route_path_t path_1_1_1_1 = { .frp_addr = nh_1_1_1_1, .frp_bier_fib_index = bti, .frp_flags = FIB_ROUTE_PATH_BIER_FMASK, }; vec_add1(path_1_1_1_1.frp_label_stack, 500); vec_add1(paths_1_1_1_1, path_1_1_1_1); const fib_prefix_t pfx_1_1_1_1_s_32 = { .fp_addr = nh_1_1_1_1, .fp_len = 32, .fp_proto = FIB_PROTOCOL_IP4, }; const bier_fmask_id_t bfm_id_1_1_1_1 = { .bfmi_hdr_type = BIER_HDR_O_MPLS, .bfmi_nh = nh_1_1_1_1, }; index_t bei_1; bier_table_route_add(&bt_0_0_0_256, 1, paths_1_1_1_1); bei_1 = bier_table_lookup(bier_table_get(bti), 1); BIER_TEST((INDEX_INVALID != bei_1), "BP:1 present"); /* * the newly created fmask should stack on the non-eos chain * of the via-fib-entry */ dpo_id_t neos_dpo_1_1_1_1 = DPO_INVALID; bier_fmask_t *bfm_1_1_1_1; index_t bfmi_1_1_1_1; fei = fib_table_lookup_exact_match(0, &pfx_1_1_1_1_s_32); fib_entry_contribute_forwarding(fei, FIB_FORW_CHAIN_TYPE_MPLS_NON_EOS, &neos_dpo_1_1_1_1); bfmi_1_1_1_1 = bier_fmask_db_find(bti, &bfm_id_1_1_1_1); bfm_1_1_1_1 = bier_fmask_get(bfmi_1_1_1_1); BIER_TEST(!dpo_cmp(&neos_dpo_1_1_1_1, &bfm_1_1_1_1->bfm_dpo), "Fmask via 1.1.1.1 stacks on neos from 1.1.1.1/32"); /* * and that n-eos LB at this stage is a drop.. */ const fib_test_lb_bucket_t bucket_drop = { .type = FT_LB_DROP, }; BIER_TEST(fib_test_validate_lb(&neos_dpo_1_1_1_1, 1, &bucket_drop), "1.1.1.1/32 n-eos LB 1 buckets via: DROP"); /* * The BIER entry should stack on the forwarding chain of the fmask */ const fib_test_lb_bucket_t dpo_o_bfm_1_1_1_1 = { .type = FT_LB_BIER_FMASK, .bier = { .fmask = bfmi_1_1_1_1, }, }; BIER_TEST(bier_test_validate_entry(bei_1, 1, &bucket_drop), "BP:1 stacks on bier drop"); /* * give 1.1.1.1/32 a path and hence a interesting n-eos chain */ ip46_address_t nh_10_10_10_1 = { .ip4 = { .as_u32 = clib_host_to_net_u32(0x0a0a0a01), }, }; adj_index_t ai_mpls_10_10_10_1; ai_mpls_10_10_10_1 = adj_nbr_add_or_lock(FIB_PROTOCOL_IP4, VNET_LINK_MPLS, &nh_10_10_10_1, tm->hw[0]->sw_if_index); fib_test_lb_bucket_t bucket_neos_99_via_10_10_10_1 = { .type = FT_LB_LABEL_O_ADJ, .label_o_adj = { .label = 99, .eos = MPLS_NON_EOS, .adj = ai_mpls_10_10_10_1, .ttl = 255, }, }; mpls_label_t *out_lbl_99 = NULL; vec_add1(out_lbl_99, 99); fei = fib_table_entry_update_one_path(0, &pfx_1_1_1_1_s_32, FIB_SOURCE_API, FIB_ENTRY_FLAG_NONE, DPO_PROTO_IP4, &nh_10_10_10_1, tm->hw[0]->sw_if_index, ~0, // invalid fib index 1, out_lbl_99, FIB_ROUTE_PATH_FLAG_NONE); fib_entry_contribute_forwarding(fei, FIB_FORW_CHAIN_TYPE_MPLS_NON_EOS, &neos_dpo_1_1_1_1); BIER_TEST(fib_test_validate_lb(&neos_dpo_1_1_1_1, 1, &bucket_neos_99_via_10_10_10_1), "1.1.1.1/32 n-eos LB 1 buckets via: 99 + 10.10.10.1"); BIER_TEST(!dpo_cmp(&neos_dpo_1_1_1_1, &bfm_1_1_1_1->bfm_dpo), "Fmask via 1.1.1.1 stacks on updated non-eos of 1.1.1.1/32"); BIER_TEST(bier_test_validate_entry(bei_1, 1, &dpo_o_bfm_1_1_1_1), "BP:1 stacks on fmask 1.1.1.1"); /* * add another path to the via entry. * this makes the via-entry instantiate a new load-balance with * 2 buckets. and the back-walk to the BIER entry will need to * re-stack on it. */ ip46_address_t nh_10_10_10_2 = { .ip4 = { .as_u32 = clib_host_to_net_u32(0x0a0a0a02), }, }; adj_index_t ai_mpls_10_10_10_2; ai_mpls_10_10_10_2 = adj_nbr_add_or_lock(FIB_PROTOCOL_IP4, VNET_LINK_MPLS, &nh_10_10_10_2, tm->hw[0]->sw_if_index); fib_test_lb_bucket_t bucket_neos_100_via_10_10_10_2 = { .type = FT_LB_LABEL_O_ADJ, .label_o_adj = { .label = 100, .eos = MPLS_NON_EOS, .adj = ai_mpls_10_10_10_2, .ttl = 255, }, }; mpls_label_t *out_lbl_100 = NULL; vec_add1(out_lbl_100, 100); fei = fib_table_entry_path_add(0, &pfx_1_1_1_1_s_32, FIB_SOURCE_API, FIB_ENTRY_FLAG_NONE, DPO_PROTO_IP4, &nh_10_10_10_2, tm->hw[0]->sw_if_index, ~0, // invalid fib index 1, out_lbl_100, FIB_ROUTE_PATH_FLAG_NONE); fib_entry_contribute_forwarding(fei, FIB_FORW_CHAIN_TYPE_MPLS_NON_EOS, &neos_dpo_1_1_1_1); BIER_TEST(fib_test_validate_lb(&neos_dpo_1_1_1_1, 2, &bucket_neos_99_via_10_10_10_1, &bucket_neos_100_via_10_10_10_2), "1.1.1.1/32 n-eos LB 2 buckets " "via: 99 + 10.10.10.1, " "via: 100 + 10.10.10.2"); BIER_TEST(!dpo_cmp(&neos_dpo_1_1_1_1, &bfm_1_1_1_1->bfm_dpo), "Fmask via 1.1.1.1 stacks on updated non-eos of 1.1.1.1/32"); /* * add another bier bit-position via the same next-hop * since its the same next hop, the two bit-positions should link * to the same fmask */ index_t bei_2; bier_table_route_add(&bt_0_0_0_256, 2, paths_1_1_1_1); bei_2 = bier_table_lookup(bier_table_get(bti), 2); BIER_TEST(bier_test_validate_entry(bei_2, 1, &dpo_o_bfm_1_1_1_1), "BP:2 stacks on fmask 1.1.1.1"); /* * now add a bit-position via a different next hop and expect to * link via a different fmask */ const ip46_address_t nh_1_1_1_2 = { .ip4 = { .as_u32 = clib_host_to_net_u32(0x01010102), }, }; const fib_prefix_t pfx_1_1_1_2_s_32 = { .fp_addr = nh_1_1_1_2, .fp_len = 32, .fp_proto = FIB_PROTOCOL_IP4, }; fib_route_path_t *paths_1_1_1_2 = NULL, path_1_1_1_2 = { .frp_addr = nh_1_1_1_2, .frp_bier_fib_index = bti, .frp_flags = FIB_ROUTE_PATH_BIER_FMASK, }; vec_add1(path_1_1_1_2.frp_label_stack, 501); vec_add1(paths_1_1_1_2, path_1_1_1_2); const bier_fmask_id_t bfm_id_1_1_1_2 = { .bfmi_hdr_type = BIER_HDR_O_MPLS, .bfmi_nh = nh_1_1_1_2, }; index_t bei_3; mpls_label_t *out_lbl_101 = NULL; vec_add1(out_lbl_101, 101); fei = fib_table_entry_path_add(0, &pfx_1_1_1_2_s_32, FIB_SOURCE_API, FIB_ENTRY_FLAG_NONE, DPO_PROTO_IP4, &nh_10_10_10_2, tm->hw[0]->sw_if_index, ~0, // invalid fib index 1, out_lbl_101, FIB_ROUTE_PATH_FLAG_NONE); bier_table_route_add(&bt_0_0_0_256, 3, paths_1_1_1_2); bei_3 = bier_table_lookup(bier_table_get(bti), 3); BIER_TEST((INDEX_INVALID != bei_3), "BP:3 present"); /* * the newly created fmask should stack on the non-eos chain * of the via-fib-entry */ dpo_id_t neos_dpo_1_1_1_2 = DPO_INVALID; bier_fmask_t *bfm_1_1_1_2; index_t bfmi_1_1_1_2; fei = fib_table_lookup_exact_match(0, &pfx_1_1_1_2_s_32); fib_entry_contribute_forwarding(fei, FIB_FORW_CHAIN_TYPE_MPLS_NON_EOS, &neos_dpo_1_1_1_2); bfmi_1_1_1_2 = bier_fmask_db_find(bti, &bfm_id_1_1_1_2); bfm_1_1_1_2 = bier_fmask_get(bfmi_1_1_1_2); BIER_TEST(!dpo_cmp(&neos_dpo_1_1_1_2, &bfm_1_1_1_2->bfm_dpo), "Fmask via 1.1.1.2 stacks on non-eos of 1.1.1.2/32"); /* * The BIER entry should stack on the forwarding chain of the fmask */ const fib_test_lb_bucket_t dpo_o_bfm_1_1_1_2 = { .type = FT_LB_BIER_FMASK, .bier = { .fmask = bfmi_1_1_1_2, }, }; BIER_TEST(bier_test_validate_entry(bei_3, 1, &dpo_o_bfm_1_1_1_2), "BP:3 stacks on fmask 1.1.1.2"); /* * Load-balance BP:3 over both next-hops */ bier_table_route_add(&bt_0_0_0_256, 3, paths_1_1_1_1); BIER_TEST(bier_test_validate_entry(bei_3, 2, &dpo_o_bfm_1_1_1_1, &dpo_o_bfm_1_1_1_2), "BP:3 stacks on fmask 1.1.1.2 & 1.1.1.1"); /* * test that the ECMP choices for BP:3 have been spread over the * ECMP tables */ BIER_TEST((bier_table_fwd_lookup(bier_table_get(l_o_bt[0].bier.table), 3) == bfmi_1_1_1_1), "fwd lookup for BP:3 ECMP:0 is 1.1.1.1"); BIER_TEST((bier_table_fwd_lookup(bier_table_get(l_o_bt[1].bier.table), 3) == bfmi_1_1_1_2), "fwd lookup for BP:3 ECMP:1 is 1.1.1.2"); /* * Withdraw one of the via FIB and thus bring down the fmask * expect the bier0entry forwarding to remove this from the set */ fib_table_entry_delete(0, &pfx_1_1_1_2_s_32, FIB_SOURCE_API); BIER_TEST(bier_test_validate_entry(bei_3, 1, &dpo_o_bfm_1_1_1_1), "BP:3 post 1.1.1.2 removal stacks on fmask 1.1.1.1"); BIER_TEST((bier_table_fwd_lookup(bier_table_get(l_o_bt[0].bier.table), 3) == bfmi_1_1_1_1), "fwd lookup for BP:3 ECMP:0 is 1.1.1.1"); BIER_TEST((bier_table_fwd_lookup(bier_table_get(l_o_bt[1].bier.table), 3) == bfmi_1_1_1_1), "fwd lookup for BP:3 ECMP:1 is 1.1.1.1"); /* * add the via back */ out_lbl_101 = NULL; vec_add1(out_lbl_101, 101); fei = fib_table_entry_path_add(0, &pfx_1_1_1_2_s_32, FIB_SOURCE_API, FIB_ENTRY_FLAG_NONE, DPO_PROTO_IP4, &nh_10_10_10_2, tm->hw[0]->sw_if_index, ~0, // invalid fib index 1, out_lbl_101, FIB_ROUTE_PATH_FLAG_NONE); /* suspend so the update walk kicks int */ vlib_process_suspend(vlib_get_main(), 1e-5); BIER_TEST(bier_test_validate_entry(bei_3, 2, &dpo_o_bfm_1_1_1_1, &dpo_o_bfm_1_1_1_2), "BP:3 stacks on fmask 1.1.1.2 & 1.1.1.1"); BIER_TEST((bier_table_fwd_lookup(bier_table_get(l_o_bt[0].bier.table), 3) == bfmi_1_1_1_1), "fwd lookup for BP:3 ECMP:0 is 1.1.1.1"); BIER_TEST((bier_table_fwd_lookup(bier_table_get(l_o_bt[1].bier.table), 3) == bfmi_1_1_1_2), "fwd lookup for BP:3 ECMP:1 is 1.1.1.2"); /* * remove the original 1.1.1.2 fmask from BP:3 */ bier_table_route_remove(&bt_0_0_0_256, 3, paths_1_1_1_2); BIER_TEST(bier_test_validate_entry(bei_3, 1, &dpo_o_bfm_1_1_1_1), "BP:3 stacks on fmask 1.1.1.1"); /* * test that the ECMP choices for BP:3 have been updated */ BIER_TEST((bier_table_fwd_lookup(bier_table_get(l_o_bt[0].bier.table), 3) == bfmi_1_1_1_1), "fwd lookup for BP:3 ECMP:0 is 1.1.1.1"); BIER_TEST((bier_table_fwd_lookup(bier_table_get(l_o_bt[1].bier.table), 3) == bfmi_1_1_1_1), "fwd lookup for BP:3 ECMP:1 is 1.1.1.1"); /* * remove the routes added */ bier_table_route_remove(&bt_0_0_0_256, 2, paths_1_1_1_1); bier_table_route_remove(&bt_0_0_0_256, 3, paths_1_1_1_2); bier_table_route_remove(&bt_0_0_0_256, 3, paths_1_1_1_1); bier_table_route_remove(&bt_0_0_0_256, 1, paths_1_1_1_1); /* * delete the table */ bier_table_unlock(&bt_0_0_0_256); /* * test resources are freed */ for (ii = 0; ii < N_BIER_ECMP_TABLES; ii++) { bier_table_ecmp_unlock(l_o_bt[ii].bier.table); }; BIER_TEST(0 == pool_elts(bier_table_pool), "BIER table pool empty"); BIER_TEST(0 == pool_elts(bier_fmask_pool), "BIER fmask pool empty"); BIER_TEST(0 == pool_elts(bier_entry_pool), "BIER entry pool empty"); adj_unlock(ai_mpls_10_10_10_1); adj_unlock(ai_mpls_10_10_10_2); dpo_reset(&neos_dpo_1_1_1_1); dpo_reset(&neos_dpo_1_1_1_2); fib_table_entry_delete(0, &pfx_1_1_1_1_s_32, FIB_SOURCE_API); fib_table_entry_delete(0, &pfx_1_1_1_2_s_32, FIB_SOURCE_API); /* +1 to account for the one time alloc'd drop LB in the MPLS fibs */ BIER_TEST(lb_count+1 == pool_elts(load_balance_pool), "Load-balance resources freed "); BIER_TEST((0 == adj_nbr_db_size()), "ADJ DB size is %d", adj_nbr_db_size()); vec_free(paths_1_1_1_1); vec_free(paths_1_1_1_2); return (0); } static int bier_test_mpls_imp (void) { fib_node_index_t bii; /* test_main_t *tm; */ /* tm = &test_main; */ /* * Add the BIER Main table */ const bier_table_id_t bt_0_0_0_256 = { .bti_set = 0, .bti_sub_domain = 0, .bti_hdr_len = BIER_HDR_LEN_256, .bti_type = BIER_TABLE_MPLS_SPF, .bti_ecmp = BIER_ECMP_TABLE_ID_MAIN, }; bier_table_add_or_lock(&bt_0_0_0_256, 1600); /* * A bit-string for imp 1. */ bier_bit_string_t bbs_256; u8 buckets[BIER_HDR_BUCKETS_256]; memset(buckets, 0x5, BIER_HDR_BUCKETS_256); bier_bit_string_init(&bbs_256, BIER_HDR_LEN_256, buckets); bii = bier_imp_add_or_lock(&bt_0_0_0_256, 1, &bbs_256); /* * An mfib entry that resolves via the BIER imposition */ const mfib_prefix_t pfx_1_1_1_1_c_239_1_1_1 = { .fp_len = 64, .fp_proto = FIB_PROTOCOL_IP4, .fp_grp_addr = { .ip4.as_u32 = clib_host_to_net_u32(0xef010101), }, .fp_src_addr = { .ip4.as_u32 = clib_host_to_net_u32(0x01010101), }, }; fib_route_path_t path_via_bier_imp_1 = { .frp_proto = DPO_PROTO_BIER, .frp_bier_imp = bii, .frp_weight = 0, .frp_flags = FIB_ROUTE_PATH_BIER_IMP, }; mfib_table_entry_path_update(0, // default table &pfx_1_1_1_1_c_239_1_1_1 , MFIB_SOURCE_API, &path_via_bier_imp_1, MFIB_ITF_FLAG_FORWARD); mfib_table_entry_delete(0, &pfx_1_1_1_1_c_239_1_1_1 , MFIB_SOURCE_API); bier_imp_unlock(bii); bier_table_unlock(&bt_0_0_0_256); BIER_TEST(0 == pool_elts(bier_imp_pool), "BIER imposition resources freed "); BIER_TEST(0 == pool_elts(bier_table_pool), "BIER table resources freed "); return (0); } static int bier_test_mpls_disp (void) { /* test_main_t *tm; */ /* tm = &test_main; */ /* * Add the BIER Main table */ const bier_table_id_t bt_0_0_0_256 = { .bti_set = 0, .bti_sub_domain = 0, .bti_hdr_len = BIER_HDR_LEN_256, .bti_type = BIER_TABLE_MPLS_SPF, .bti_ecmp = BIER_ECMP_TABLE_ID_MAIN, }; index_t bti; bti = bier_table_add_or_lock(&bt_0_0_0_256, 1600); /* * Add a BIER dispoition table */ const u32 bier_disp_tbl_id = 1; index_t bdti1; bdti1 = bier_disp_table_add_or_lock(bier_disp_tbl_id); /* * add a bit-poistion in the table that resolves via * DISP table, i.e. a for-us bit-position */ fib_route_path_t *paths_via_disp = NULL, path_via_disp = { // .frp_addr = all-zeros .frp_bier_fib_index = bdti1, .frp_flags = FIB_ROUTE_PATH_BIER_FMASK, }; vec_add1(paths_via_disp, path_via_disp); bier_table_route_add(&bt_0_0_0_256, 3, paths_via_disp); /* * the fmask should stack on the BIER disp table */ const bier_fmask_id_t bfm_id_0_0_0_0 = { .bfmi_hdr_type = BIER_HDR_O_MPLS, }; bier_fmask_t *bfm_0_0_0_0; index_t bfmi_0_0_0_0; dpo_id_t dpo_disp_tbl_1 = DPO_INVALID; bier_disp_table_contribute_forwarding(bdti1, &dpo_disp_tbl_1); bfmi_0_0_0_0 = bier_fmask_db_find(bti, &bfm_id_0_0_0_0); bfm_0_0_0_0 = bier_fmask_get(bfmi_0_0_0_0); BIER_TEST(!dpo_cmp(&dpo_disp_tbl_1, &bfm_0_0_0_0->bfm_dpo), "Fmask via 0.0.0.0 stacks on BIER disp table 1"); /* * and a deag entry into the disposition table */ fib_route_path_t *rpaths = NULL, path_via_mfib = { .frp_proto = DPO_PROTO_IP4, .frp_addr = zero_addr, .frp_fib_index = 0, // default MFIB table .frp_rpf_id = 9, // some non-zero value .frp_flags = FIB_ROUTE_PATH_RPF_ID, }; u16 src = 99; vec_add1(rpaths, path_via_mfib); bier_disp_table_entry_path_add(bier_disp_tbl_id, src, BIER_HDR_PROTO_IPV4, rpaths); /* which should stack on a lookup in the mfib table */ const dpo_id_t *dpo_disp_entry_lb; const dpo_id_t *dpo_disp_entry_v4; bier_disp_entry_t *bde_99; index_t bdei; bdei = bier_disp_table_lookup(bdti1, clib_host_to_net_u16(src)); bde_99 = bier_disp_entry_get(bdei); dpo_disp_entry_lb = &bde_99->bde_fwd[BIER_HDR_PROTO_IPV4].bde_dpo; BIER_TEST(dpo_disp_entry_lb->dpoi_type == DPO_LOAD_BALANCE, "BIER Disp entry stacks on LB"); load_balance_t *lb; lb = load_balance_get(dpo_disp_entry_lb->dpoi_index); dpo_disp_entry_v4 = load_balance_get_bucket_i(lb, 0); lookup_dpo_t *lkd = lookup_dpo_get(dpo_disp_entry_v4->dpoi_index); BIER_TEST((bdti1 == lkd->lkd_fib_index), "disp is deag in %d %U", lkd->lkd_fib_index, format_dpo_id, dpo_disp_entry_v4, 0); BIER_TEST((LOOKUP_INPUT_DST_ADDR == lkd->lkd_input), "disp is destination deag in %d %U", lkd->lkd_input, format_dpo_id, dpo_disp_entry_v4, 0); BIER_TEST((LOOKUP_MULTICAST == lkd->lkd_cast), "disp is multicast deag in %d %U", lkd->lkd_input, format_dpo_id, dpo_disp_entry_v4, 0); /* * cleanup */ dpo_reset(&dpo_disp_tbl_1); bier_disp_table_entry_path_remove(bier_disp_tbl_id, src, BIER_HDR_PROTO_IPV4, rpaths); bier_table_route_remove(&bt_0_0_0_256, 3, paths_via_disp); bier_disp_table_unlock_w_table_id(bier_disp_tbl_id); bier_table_unlock(&bt_0_0_0_256); BIER_TEST(0 == pool_elts(bier_fmask_pool), "BIER fmask resources freed "); BIER_TEST(0 == pool_elts(bier_table_pool), "BIER table resources freed "); BIER_TEST(0 == pool_elts(bier_disp_table_pool), "BIER Disposition table resources freed "); BIER_TEST(0 == pool_elts(bier_disp_entry_pool), "BIER Disposition entry resources freed "); vec_free(paths_via_disp); return (0); } static clib_error_t * bier_test (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd_arg) { int res = 0; res += bier_test_mk_intf(4); if (unformat (input, "debug")) { bier_test_do_debug = 1; } if (unformat (input, "mid")) res += bier_test_mpls_spf(); else if (unformat (input, "head")) res += bier_test_mpls_imp(); else if (unformat (input, "tail")) res += bier_test_mpls_disp(); else { res += bier_test_mpls_spf(); res += bier_test_mpls_imp(); res += bier_test_mpls_disp(); } if (res) { return clib_error_return(0, "BIER Unit Test Failed"); } else { return (NULL); } } VLIB_CLI_COMMAND (test_route_command, static) = { .path = "test bier", .short_help = "bier unit tests", .function = bier_test, }; clib_error_t * bier_test_init (vlib_main_t *vm) { return 0; } VLIB_INIT_FUNCTION (bier_test_init);