--- /dev/null
+/*
+ * 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 <vnet/mpls/mpls.h>
+#include <vnet/bier/bier_table.h>
+#include <vnet/bier/bier_entry.h>
+#include <vnet/bier/bier_fmask.h>
+#include <vnet/bier/bier_bit_string.h>
+#include <vnet/bier/bier_imp.h>
+#include <vnet/bier/bier_disp_table.h>
+#include <vnet/bier/bier_disp_entry.h>
+#include <vnet/fib/fib_entry.h>
+#include <vnet/fib/fib_table.h>
+#include <vnet/fib/mpls_fib.h>
+#include <vnet/dpo/load_balance.h>
+#include <vnet/dpo/drop_dpo.h>
+#include <vnet/dpo/lookup_dpo.h>
+#include <vnet/mfib/mfib_table.h>
+
+#include <vnet/fib/fib_test.h>
+
+/*
+ * 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);
Code Review / vpp.git / blobdiff