Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2016 Cisco and/or its affiliates. |
| 3 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | * you may not use this file except in compliance with the License. |
| 5 | * You may obtain a copy of the License at: |
| 6 | * |
| 7 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | * |
| 9 | * Unless required by applicable law or agreed to in writing, software |
| 10 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | * See the License for the specific language governing permissions and |
| 13 | * limitations under the License. |
| 14 | */ |
| 15 | |
| 16 | #include <vnet/adj/adj.h> |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 17 | #include <vnet/adj/adj_internal.h> |
| 18 | #include <vnet/adj/adj_glean.h> |
| 19 | #include <vnet/adj/adj_midchain.h> |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 20 | #include <vnet/adj/adj_mcast.h> |
Neale Ranns | 88fc83e | 2017-04-05 08:11:14 -0700 | [diff] [blame] | 21 | #include <vnet/adj/adj_delegate.h> |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 22 | #include <vnet/fib/fib_node_list.h> |
| 23 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 24 | /* Adjacency packet/byte counters indexed by adjacency index. */ |
Neale Ranns | 1426039 | 2018-09-28 05:00:57 -0700 | [diff] [blame] | 25 | vlib_combined_counter_main_t adjacency_counters = { |
| 26 | .name = "adjacency", |
| 27 | .stat_segment_name = "/net/adjacency", |
| 28 | }; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 29 | |
Neale Ranns | 6c3ebcc | 2016-10-02 21:20:15 +0100 | [diff] [blame] | 30 | /* |
| 31 | * the single adj pool |
| 32 | */ |
| 33 | ip_adjacency_t *adj_pool; |
| 34 | |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 35 | /** |
| 36 | * @brief Global Config for enabling per-adjacency counters. |
| 37 | * By default these are disabled. |
| 38 | */ |
| 39 | int adj_per_adj_counters; |
| 40 | |
Neale Ranns | 1855b8e | 2018-07-11 10:31:26 -0700 | [diff] [blame] | 41 | const ip46_address_t ADJ_BCAST_ADDR = { |
| 42 | .ip6 = { |
| 43 | .as_u64[0] = 0xffffffffffffffff, |
| 44 | .as_u64[1] = 0xffffffffffffffff, |
| 45 | }, |
| 46 | }; |
| 47 | |
Neale Ranns | 521a8d7 | 2018-12-06 13:46:49 +0000 | [diff] [blame] | 48 | /** |
| 49 | * Adj flag names |
| 50 | */ |
| 51 | static const char *adj_attr_names[] = ADJ_ATTR_NAMES; |
| 52 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 53 | always_inline void |
| 54 | adj_poison (ip_adjacency_t * adj) |
| 55 | { |
| 56 | if (CLIB_DEBUG > 0) |
| 57 | { |
Dave Barach | b7b9299 | 2018-10-17 10:38:51 -0400 | [diff] [blame] | 58 | clib_memset (adj, 0xfe, sizeof (adj[0])); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 59 | } |
| 60 | } |
| 61 | |
| 62 | ip_adjacency_t * |
| 63 | adj_alloc (fib_protocol_t proto) |
| 64 | { |
| 65 | ip_adjacency_t *adj; |
| 66 | |
Neale Ranns | fa5d198 | 2017-02-20 14:19:51 -0800 | [diff] [blame] | 67 | pool_get_aligned(adj_pool, adj, CLIB_CACHE_LINE_BYTES); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 68 | |
| 69 | adj_poison(adj); |
| 70 | |
| 71 | /* Make sure certain fields are always initialized. */ |
| 72 | /* Validate adjacency counters. */ |
| 73 | vlib_validate_combined_counter(&adjacency_counters, |
Neale Ranns | 6c3ebcc | 2016-10-02 21:20:15 +0100 | [diff] [blame] | 74 | adj_get_index(adj)); |
Neale Ranns | 1426039 | 2018-09-28 05:00:57 -0700 | [diff] [blame] | 75 | vlib_zero_combined_counter(&adjacency_counters, |
| 76 | adj_get_index(adj)); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 77 | fib_node_init(&adj->ia_node, |
| 78 | FIB_NODE_TYPE_ADJ); |
Neale Ranns | 88fc83e | 2017-04-05 08:11:14 -0700 | [diff] [blame] | 79 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 80 | adj->ia_nh_proto = proto; |
Neale Ranns | 19c68d2 | 2016-12-07 15:38:14 +0000 | [diff] [blame] | 81 | adj->ia_flags = 0; |
Neale Ranns | 88fc83e | 2017-04-05 08:11:14 -0700 | [diff] [blame] | 82 | adj->rewrite_header.sw_if_index = ~0; |
Neale Ranns | 8c4611b | 2017-05-23 03:43:47 -0700 | [diff] [blame] | 83 | adj->rewrite_header.flags = 0; |
Neale Ranns | 88fc83e | 2017-04-05 08:11:14 -0700 | [diff] [blame] | 84 | adj->lookup_next_index = 0; |
| 85 | adj->ia_delegates = NULL; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 86 | |
Neale Ranns | 0f26c5a | 2017-03-01 15:12:11 -0800 | [diff] [blame] | 87 | /* lest it become a midchain in the future */ |
Dave Barach | b7b9299 | 2018-10-17 10:38:51 -0400 | [diff] [blame] | 88 | clib_memset(&adj->sub_type.midchain.next_dpo, 0, |
Neale Ranns | 0f26c5a | 2017-03-01 15:12:11 -0800 | [diff] [blame] | 89 | sizeof(adj->sub_type.midchain.next_dpo)); |
| 90 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 91 | return (adj); |
| 92 | } |
| 93 | |
| 94 | static int |
| 95 | adj_index_is_special (adj_index_t adj_index) |
| 96 | { |
| 97 | if (ADJ_INDEX_INVALID == adj_index) |
| 98 | return (!0); |
| 99 | |
| 100 | return (0); |
| 101 | } |
| 102 | |
Neale Ranns | 521a8d7 | 2018-12-06 13:46:49 +0000 | [diff] [blame] | 103 | u8* |
| 104 | format_adj_flags (u8 * s, va_list * args) |
| 105 | { |
| 106 | adj_flags_t af; |
| 107 | adj_attr_t at; |
| 108 | |
| 109 | af = va_arg (*args, int); |
| 110 | |
| 111 | if (ADJ_FLAG_NONE == af) |
| 112 | { |
| 113 | return (format(s, "None")); |
| 114 | } |
| 115 | FOR_EACH_ADJ_ATTR(at) |
| 116 | { |
| 117 | if (af & (1 << at)) |
| 118 | { |
| 119 | s = format(s, "%s ", adj_attr_names[at]); |
| 120 | } |
| 121 | } |
| 122 | return (s); |
| 123 | } |
| 124 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 125 | /** |
| 126 | * @brief Pretty print helper function for formatting specific adjacencies. |
| 127 | * @param s - input string to format |
| 128 | * @param args - other args passed to format function such as: |
| 129 | * - vnet_main_t |
| 130 | * - ip_lookup_main_t |
| 131 | * - adj_index |
| 132 | */ |
| 133 | u8 * |
| 134 | format_ip_adjacency (u8 * s, va_list * args) |
| 135 | { |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 136 | format_ip_adjacency_flags_t fiaf; |
| 137 | ip_adjacency_t * adj; |
| 138 | u32 adj_index; |
| 139 | |
| 140 | adj_index = va_arg (*args, u32); |
| 141 | fiaf = va_arg (*args, format_ip_adjacency_flags_t); |
| 142 | adj = adj_get(adj_index); |
Neale Ranns | 521a8d7 | 2018-12-06 13:46:49 +0000 | [diff] [blame] | 143 | |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 144 | switch (adj->lookup_next_index) |
| 145 | { |
| 146 | case IP_LOOKUP_NEXT_REWRITE: |
Neale Ranns | 521a8d7 | 2018-12-06 13:46:49 +0000 | [diff] [blame] | 147 | case IP_LOOKUP_NEXT_BCAST: |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 148 | s = format (s, "%U", format_adj_nbr, adj_index, 0); |
| 149 | break; |
| 150 | case IP_LOOKUP_NEXT_ARP: |
| 151 | s = format (s, "%U", format_adj_nbr_incomplete, adj_index, 0); |
| 152 | break; |
| 153 | case IP_LOOKUP_NEXT_GLEAN: |
| 154 | s = format (s, "%U", format_adj_glean, adj_index, 0); |
| 155 | break; |
| 156 | case IP_LOOKUP_NEXT_MIDCHAIN: |
| 157 | s = format (s, "%U", format_adj_midchain, adj_index, 2); |
| 158 | break; |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 159 | case IP_LOOKUP_NEXT_MCAST: |
| 160 | s = format (s, "%U", format_adj_mcast, adj_index, 0); |
| 161 | break; |
Neale Ranns | 0f26c5a | 2017-03-01 15:12:11 -0800 | [diff] [blame] | 162 | case IP_LOOKUP_NEXT_MCAST_MIDCHAIN: |
| 163 | s = format (s, "%U", format_adj_mcast_midchain, adj_index, 0); |
| 164 | break; |
Neale Ranns | 521a8d7 | 2018-12-06 13:46:49 +0000 | [diff] [blame] | 165 | case IP_LOOKUP_NEXT_DROP: |
| 166 | case IP_LOOKUP_NEXT_PUNT: |
| 167 | case IP_LOOKUP_NEXT_LOCAL: |
| 168 | case IP_LOOKUP_NEXT_ICMP_ERROR: |
| 169 | case IP_LOOKUP_N_NEXT: |
| 170 | break; |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 171 | } |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 172 | |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 173 | if (fiaf & FORMAT_IP_ADJACENCY_DETAIL) |
| 174 | { |
Neale Ranns | 044183f | 2017-01-24 01:34:25 -0800 | [diff] [blame] | 175 | vlib_counter_t counts; |
| 176 | |
| 177 | vlib_get_combined_counter(&adjacency_counters, adj_index, &counts); |
Neale Ranns | 521a8d7 | 2018-12-06 13:46:49 +0000 | [diff] [blame] | 178 | s = format (s, "\n flags:%U", format_adj_flags, adj->ia_flags); |
Neale Ranns | 2303cb1 | 2018-02-21 04:57:17 -0800 | [diff] [blame] | 179 | s = format (s, "\n counts:[%Ld:%Ld]", counts.packets, counts.bytes); |
| 180 | s = format (s, "\n locks:%d", adj->ia_node.fn_locks); |
Neale Ranns | 88fc83e | 2017-04-05 08:11:14 -0700 | [diff] [blame] | 181 | s = format(s, "\n delegates:\n "); |
Neale Ranns | d79a43c | 2018-02-19 02:36:19 -0800 | [diff] [blame] | 182 | adj_delegate_format(s, adj); |
Neale Ranns | 88fc83e | 2017-04-05 08:11:14 -0700 | [diff] [blame] | 183 | |
Neale Ranns | 2303cb1 | 2018-02-21 04:57:17 -0800 | [diff] [blame] | 184 | s = format(s, "\n children:"); |
| 185 | if (fib_node_list_get_size(adj->ia_node.fn_children)) |
| 186 | { |
| 187 | s = format(s, "\n "); |
| 188 | s = fib_node_children_format(adj->ia_node.fn_children, s); |
| 189 | } |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 190 | } |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 191 | |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 192 | return s; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 193 | } |
| 194 | |
Neale Ranns | 521a8d7 | 2018-12-06 13:46:49 +0000 | [diff] [blame] | 195 | int |
| 196 | adj_recursive_loop_detect (adj_index_t ai, |
| 197 | fib_node_index_t **entry_indicies) |
| 198 | { |
| 199 | ip_adjacency_t * adj; |
| 200 | |
| 201 | adj = adj_get(ai); |
| 202 | |
| 203 | switch (adj->lookup_next_index) |
| 204 | { |
| 205 | case IP_LOOKUP_NEXT_REWRITE: |
| 206 | case IP_LOOKUP_NEXT_ARP: |
| 207 | case IP_LOOKUP_NEXT_GLEAN: |
| 208 | case IP_LOOKUP_NEXT_MCAST: |
| 209 | case IP_LOOKUP_NEXT_BCAST: |
| 210 | case IP_LOOKUP_NEXT_DROP: |
| 211 | case IP_LOOKUP_NEXT_PUNT: |
| 212 | case IP_LOOKUP_NEXT_LOCAL: |
| 213 | case IP_LOOKUP_NEXT_ICMP_ERROR: |
| 214 | case IP_LOOKUP_N_NEXT: |
| 215 | /* |
| 216 | * these adjcencey types are terminal graph nodes, so there's no |
| 217 | * possibility of a loop down here. |
| 218 | */ |
| 219 | break; |
| 220 | case IP_LOOKUP_NEXT_MIDCHAIN: |
| 221 | case IP_LOOKUP_NEXT_MCAST_MIDCHAIN: |
| 222 | return (adj_ndr_midchain_recursive_loop_detect(ai, entry_indicies)); |
| 223 | } |
| 224 | |
| 225 | return (0); |
| 226 | } |
| 227 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 228 | /* |
| 229 | * adj_last_lock_gone |
| 230 | * |
| 231 | * last lock/reference to the adj has gone, we no longer need it. |
| 232 | */ |
| 233 | static void |
| 234 | adj_last_lock_gone (ip_adjacency_t *adj) |
| 235 | { |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 236 | vlib_main_t * vm = vlib_get_main(); |
| 237 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 238 | ASSERT(0 == fib_node_list_get_size(adj->ia_node.fn_children)); |
| 239 | ADJ_DBG(adj, "last-lock-gone"); |
| 240 | |
Neale Ranns | d79a43c | 2018-02-19 02:36:19 -0800 | [diff] [blame] | 241 | adj_delegate_adj_deleted(adj); |
Ole Troan | 793c7fe | 2018-02-15 16:14:56 +0100 | [diff] [blame] | 242 | |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 243 | vlib_worker_thread_barrier_sync (vm); |
| 244 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 245 | switch (adj->lookup_next_index) |
| 246 | { |
| 247 | case IP_LOOKUP_NEXT_MIDCHAIN: |
| 248 | dpo_reset(&adj->sub_type.midchain.next_dpo); |
| 249 | /* FALL THROUGH */ |
| 250 | case IP_LOOKUP_NEXT_ARP: |
| 251 | case IP_LOOKUP_NEXT_REWRITE: |
Neale Ranns | 1855b8e | 2018-07-11 10:31:26 -0700 | [diff] [blame] | 252 | case IP_LOOKUP_NEXT_BCAST: |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 253 | /* |
| 254 | * complete and incomplete nbr adjs |
| 255 | */ |
Neale Ranns | 177bbdc | 2016-11-15 09:46:51 +0000 | [diff] [blame] | 256 | adj_nbr_remove(adj_get_index(adj), |
| 257 | adj->ia_nh_proto, |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 258 | adj->ia_link, |
| 259 | &adj->sub_type.nbr.next_hop, |
| 260 | adj->rewrite_header.sw_if_index); |
| 261 | break; |
| 262 | case IP_LOOKUP_NEXT_GLEAN: |
| 263 | adj_glean_remove(adj->ia_nh_proto, |
| 264 | adj->rewrite_header.sw_if_index); |
| 265 | break; |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 266 | case IP_LOOKUP_NEXT_MCAST: |
Neale Ranns | 0f26c5a | 2017-03-01 15:12:11 -0800 | [diff] [blame] | 267 | case IP_LOOKUP_NEXT_MCAST_MIDCHAIN: |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 268 | adj_mcast_remove(adj->ia_nh_proto, |
| 269 | adj->rewrite_header.sw_if_index); |
| 270 | break; |
Neale Ranns | 88fc83e | 2017-04-05 08:11:14 -0700 | [diff] [blame] | 271 | case IP_LOOKUP_NEXT_DROP: |
| 272 | case IP_LOOKUP_NEXT_PUNT: |
| 273 | case IP_LOOKUP_NEXT_LOCAL: |
| 274 | case IP_LOOKUP_NEXT_ICMP_ERROR: |
| 275 | case IP_LOOKUP_N_NEXT: |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 276 | /* |
| 277 | * type not stored in any DB from which we need to remove it |
| 278 | */ |
| 279 | break; |
| 280 | } |
| 281 | |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 282 | vlib_worker_thread_barrier_release(vm); |
| 283 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 284 | fib_node_deinit(&adj->ia_node); |
Neale Ranns | 88fc83e | 2017-04-05 08:11:14 -0700 | [diff] [blame] | 285 | ASSERT(0 == vec_len(adj->ia_delegates)); |
| 286 | vec_free(adj->ia_delegates); |
Neale Ranns | 6c3ebcc | 2016-10-02 21:20:15 +0100 | [diff] [blame] | 287 | pool_put(adj_pool, adj); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 288 | } |
| 289 | |
Andrew Yourtchenko | 5f3fcb9 | 2017-10-25 05:50:37 -0700 | [diff] [blame] | 290 | u32 |
| 291 | adj_dpo_get_urpf (const dpo_id_t *dpo) |
| 292 | { |
| 293 | ip_adjacency_t *adj; |
| 294 | |
| 295 | adj = adj_get(dpo->dpoi_index); |
| 296 | |
| 297 | return (adj->rewrite_header.sw_if_index); |
| 298 | } |
| 299 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 300 | void |
| 301 | adj_lock (adj_index_t adj_index) |
| 302 | { |
| 303 | ip_adjacency_t *adj; |
| 304 | |
| 305 | if (adj_index_is_special(adj_index)) |
| 306 | { |
| 307 | return; |
| 308 | } |
| 309 | |
| 310 | adj = adj_get(adj_index); |
| 311 | ASSERT(adj); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 312 | |
| 313 | ADJ_DBG(adj, "lock"); |
| 314 | fib_node_lock(&adj->ia_node); |
| 315 | } |
| 316 | |
| 317 | void |
| 318 | adj_unlock (adj_index_t adj_index) |
| 319 | { |
| 320 | ip_adjacency_t *adj; |
| 321 | |
| 322 | if (adj_index_is_special(adj_index)) |
| 323 | { |
| 324 | return; |
| 325 | } |
| 326 | |
| 327 | adj = adj_get(adj_index); |
| 328 | ASSERT(adj); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 329 | |
| 330 | ADJ_DBG(adj, "unlock"); |
| 331 | ASSERT(adj); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 332 | |
| 333 | fib_node_unlock(&adj->ia_node); |
| 334 | } |
| 335 | |
| 336 | u32 |
| 337 | adj_child_add (adj_index_t adj_index, |
| 338 | fib_node_type_t child_type, |
| 339 | fib_node_index_t child_index) |
| 340 | { |
| 341 | ASSERT(ADJ_INDEX_INVALID != adj_index); |
| 342 | if (adj_index_is_special(adj_index)) |
| 343 | { |
| 344 | return (~0); |
| 345 | } |
| 346 | |
| 347 | return (fib_node_child_add(FIB_NODE_TYPE_ADJ, |
| 348 | adj_index, |
| 349 | child_type, |
| 350 | child_index)); |
| 351 | } |
| 352 | |
| 353 | void |
| 354 | adj_child_remove (adj_index_t adj_index, |
| 355 | u32 sibling_index) |
| 356 | { |
| 357 | if (adj_index_is_special(adj_index)) |
| 358 | { |
| 359 | return; |
| 360 | } |
| 361 | |
| 362 | fib_node_child_remove(FIB_NODE_TYPE_ADJ, |
| 363 | adj_index, |
| 364 | sibling_index); |
| 365 | } |
| 366 | |
Neale Ranns | b069a69 | 2017-03-15 12:34:25 -0400 | [diff] [blame] | 367 | /* |
| 368 | * Context for the walk to update the cached feture flags. |
| 369 | */ |
| 370 | typedef struct adj_feature_update_t_ |
| 371 | { |
| 372 | u8 arc; |
| 373 | u8 enable; |
| 374 | } adj_feature_update_ctx_t; |
| 375 | |
| 376 | static adj_walk_rc_t |
| 377 | adj_feature_update_walk_cb (adj_index_t ai, |
| 378 | void *arg) |
| 379 | { |
| 380 | adj_feature_update_ctx_t *ctx = arg; |
| 381 | ip_adjacency_t *adj; |
| 382 | |
| 383 | adj = adj_get(ai); |
| 384 | |
| 385 | /* |
| 386 | * this ugly mess matches the feature arc that is changing with affected |
| 387 | * adjacencies |
| 388 | */ |
| 389 | if (((ctx->arc == ip6_main.lookup_main.output_feature_arc_index) && |
| 390 | (VNET_LINK_IP6 == adj->ia_link)) || |
| 391 | ((ctx->arc == ip4_main.lookup_main.output_feature_arc_index) && |
| 392 | (VNET_LINK_IP4 == adj->ia_link)) || |
| 393 | ((ctx->arc == mpls_main.output_feature_arc_index) && |
| 394 | (VNET_LINK_MPLS == adj->ia_link))) |
| 395 | { |
| 396 | if (ctx->enable) |
| 397 | adj->rewrite_header.flags |= VNET_REWRITE_HAS_FEATURES; |
| 398 | else |
| 399 | adj->rewrite_header.flags &= ~VNET_REWRITE_HAS_FEATURES; |
| 400 | } |
| 401 | return (ADJ_WALK_RC_CONTINUE); |
| 402 | } |
| 403 | |
| 404 | void |
| 405 | adj_feature_update (u32 sw_if_index, |
| 406 | u8 arc_index, |
| 407 | u8 is_enable) |
| 408 | { |
| 409 | /* |
| 410 | * Walk all the adjacencies on the interface to update the cached |
| 411 | * 'has-features' flag |
| 412 | */ |
| 413 | adj_feature_update_ctx_t ctx = { |
| 414 | .arc = arc_index, |
| 415 | .enable = is_enable, |
| 416 | }; |
| 417 | adj_walk (sw_if_index, adj_feature_update_walk_cb, &ctx); |
| 418 | } |
| 419 | |
Neale Ranns | ffd78d1 | 2018-02-09 06:05:16 -0800 | [diff] [blame] | 420 | static adj_walk_rc_t |
| 421 | adj_mtu_update_walk_cb (adj_index_t ai, |
| 422 | void *arg) |
| 423 | { |
| 424 | ip_adjacency_t *adj; |
| 425 | |
| 426 | adj = adj_get(ai); |
| 427 | |
Ole Troan | d723161 | 2018-06-07 10:17:57 +0200 | [diff] [blame] | 428 | vnet_rewrite_update_mtu (vnet_get_main(), adj->ia_link, |
Neale Ranns | ffd78d1 | 2018-02-09 06:05:16 -0800 | [diff] [blame] | 429 | &adj->rewrite_header); |
| 430 | |
| 431 | return (ADJ_WALK_RC_CONTINUE); |
| 432 | } |
| 433 | |
Ole Troan | d723161 | 2018-06-07 10:17:57 +0200 | [diff] [blame] | 434 | static void |
| 435 | adj_mtu_update (vnet_main_t * vnm, u32 sw_if_index, u32 flags) |
Neale Ranns | ffd78d1 | 2018-02-09 06:05:16 -0800 | [diff] [blame] | 436 | { |
Ole Troan | d723161 | 2018-06-07 10:17:57 +0200 | [diff] [blame] | 437 | adj_walk (sw_if_index, adj_mtu_update_walk_cb, NULL); |
Neale Ranns | ffd78d1 | 2018-02-09 06:05:16 -0800 | [diff] [blame] | 438 | } |
| 439 | |
Ole Troan | d723161 | 2018-06-07 10:17:57 +0200 | [diff] [blame] | 440 | VNET_SW_INTERFACE_MTU_CHANGE_FUNCTION(adj_mtu_update); |
Damjan Marion | fe7d4a2 | 2018-04-13 19:43:39 +0200 | [diff] [blame] | 441 | |
Neale Ranns | b069a69 | 2017-03-15 12:34:25 -0400 | [diff] [blame] | 442 | /** |
| 443 | * @brief Walk the Adjacencies on a given interface |
| 444 | */ |
| 445 | void |
| 446 | adj_walk (u32 sw_if_index, |
| 447 | adj_walk_cb_t cb, |
| 448 | void *ctx) |
| 449 | { |
| 450 | /* |
| 451 | * walk all the neighbor adjacencies |
| 452 | */ |
| 453 | fib_protocol_t proto; |
| 454 | |
| 455 | FOR_EACH_FIB_IP_PROTOCOL(proto) |
| 456 | { |
| 457 | adj_nbr_walk(sw_if_index, proto, cb, ctx); |
Neale Ranns | 0f26c5a | 2017-03-01 15:12:11 -0800 | [diff] [blame] | 458 | adj_mcast_walk(sw_if_index, proto, cb, ctx); |
Neale Ranns | b069a69 | 2017-03-15 12:34:25 -0400 | [diff] [blame] | 459 | } |
| 460 | } |
| 461 | |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 462 | /** |
| 463 | * @brief Return the link type of the adjacency |
| 464 | */ |
| 465 | vnet_link_t |
| 466 | adj_get_link_type (adj_index_t ai) |
| 467 | { |
| 468 | const ip_adjacency_t *adj; |
| 469 | |
| 470 | adj = adj_get(ai); |
| 471 | |
Neale Ranns | 521a8d7 | 2018-12-06 13:46:49 +0000 | [diff] [blame] | 472 | return (adj->ia_link); |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 473 | } |
| 474 | |
| 475 | /** |
| 476 | * @brief Return the sw interface index of the adjacency. |
| 477 | */ |
| 478 | u32 |
| 479 | adj_get_sw_if_index (adj_index_t ai) |
| 480 | { |
| 481 | const ip_adjacency_t *adj; |
| 482 | |
| 483 | adj = adj_get(ai); |
| 484 | |
| 485 | return (adj->rewrite_header.sw_if_index); |
| 486 | } |
| 487 | |
| 488 | /** |
Neale Ranns | 88fc83e | 2017-04-05 08:11:14 -0700 | [diff] [blame] | 489 | * @brief Return true if the adjacency is 'UP', i.e. can be used for forwarding |
| 490 | * 0 is down, !0 is up. |
| 491 | */ |
| 492 | int |
| 493 | adj_is_up (adj_index_t ai) |
| 494 | { |
Neale Ranns | d79a43c | 2018-02-19 02:36:19 -0800 | [diff] [blame] | 495 | return (adj_bfd_is_up(ai)); |
Neale Ranns | 88fc83e | 2017-04-05 08:11:14 -0700 | [diff] [blame] | 496 | } |
| 497 | |
| 498 | /** |
Neale Ranns | 2e7fbcc | 2017-03-15 04:22:25 -0700 | [diff] [blame] | 499 | * @brief Return the rewrite string of the adjacency |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 500 | */ |
| 501 | const u8* |
| 502 | adj_get_rewrite (adj_index_t ai) |
| 503 | { |
| 504 | vnet_rewrite_header_t *rw; |
| 505 | ip_adjacency_t *adj; |
| 506 | |
| 507 | adj = adj_get(ai); |
| 508 | rw = &adj->rewrite_header; |
| 509 | |
| 510 | ASSERT (rw->data_bytes != 0xfefe); |
| 511 | |
| 512 | return (rw->data - rw->data_bytes); |
| 513 | } |
| 514 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 515 | static fib_node_t * |
| 516 | adj_get_node (fib_node_index_t index) |
| 517 | { |
| 518 | ip_adjacency_t *adj; |
| 519 | |
| 520 | adj = adj_get(index); |
| 521 | |
| 522 | return (&adj->ia_node); |
| 523 | } |
| 524 | |
| 525 | #define ADJ_FROM_NODE(_node) \ |
| 526 | ((ip_adjacency_t*)((char*)_node - STRUCT_OFFSET_OF(ip_adjacency_t, ia_node))) |
| 527 | |
| 528 | static void |
| 529 | adj_node_last_lock_gone (fib_node_t *node) |
| 530 | { |
| 531 | adj_last_lock_gone(ADJ_FROM_NODE(node)); |
| 532 | } |
| 533 | |
| 534 | static fib_node_back_walk_rc_t |
| 535 | adj_back_walk_notify (fib_node_t *node, |
| 536 | fib_node_back_walk_ctx_t *ctx) |
| 537 | { |
| 538 | /* |
| 539 | * Que pasa. yo soj en el final! |
| 540 | */ |
| 541 | ASSERT(0); |
| 542 | |
| 543 | return (FIB_NODE_BACK_WALK_CONTINUE); |
| 544 | } |
| 545 | |
| 546 | /* |
| 547 | * Adjacency's graph node virtual function table |
| 548 | */ |
| 549 | static const fib_node_vft_t adj_vft = { |
| 550 | .fnv_get = adj_get_node, |
| 551 | .fnv_last_lock = adj_node_last_lock_gone, |
| 552 | .fnv_back_walk = adj_back_walk_notify, |
| 553 | }; |
| 554 | |
| 555 | static clib_error_t * |
| 556 | adj_module_init (vlib_main_t * vm) |
| 557 | { |
| 558 | fib_node_register_type(FIB_NODE_TYPE_ADJ, &adj_vft); |
| 559 | |
| 560 | adj_nbr_module_init(); |
| 561 | adj_glean_module_init(); |
| 562 | adj_midchain_module_init(); |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 563 | adj_mcast_module_init(); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 564 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 565 | return (NULL); |
| 566 | } |
| 567 | |
| 568 | VLIB_INIT_FUNCTION (adj_module_init); |
| 569 | |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 570 | static clib_error_t * |
| 571 | adj_show (vlib_main_t * vm, |
| 572 | unformat_input_t * input, |
| 573 | vlib_cli_command_t * cmd) |
| 574 | { |
| 575 | adj_index_t ai = ADJ_INDEX_INVALID; |
| 576 | u32 sw_if_index = ~0; |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 577 | int summary = 0; |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 578 | |
| 579 | while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| 580 | { |
| 581 | if (unformat (input, "%d", &ai)) |
| 582 | ; |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 583 | else if (unformat (input, "sum")) |
| 584 | summary = 1; |
| 585 | else if (unformat (input, "summary")) |
| 586 | summary = 1; |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 587 | else if (unformat (input, "%U", |
| 588 | unformat_vnet_sw_interface, vnet_get_main(), |
| 589 | &sw_if_index)) |
| 590 | ; |
| 591 | else |
| 592 | break; |
| 593 | } |
| 594 | |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 595 | if (summary) |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 596 | { |
Paul Vinciguerra | bdc0e6b | 2018-09-22 05:32:50 -0700 | [diff] [blame] | 597 | vlib_cli_output (vm, "Number of adjacencies: %d", pool_elts(adj_pool)); |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 598 | vlib_cli_output (vm, "Per-adjacency counters: %s", |
| 599 | (adj_are_counters_enabled() ? |
| 600 | "enabled": |
| 601 | "disabled")); |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 602 | } |
| 603 | else |
| 604 | { |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 605 | if (ADJ_INDEX_INVALID != ai) |
| 606 | { |
| 607 | if (pool_is_free_index(adj_pool, ai)) |
Neale Ranns | 8b37b87 | 2016-11-21 12:25:22 +0000 | [diff] [blame] | 608 | { |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 609 | vlib_cli_output (vm, "adjacency %d invalid", ai); |
| 610 | return 0; |
| 611 | } |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 612 | |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 613 | vlib_cli_output (vm, "[@%d] %U", |
| 614 | ai, |
| 615 | format_ip_adjacency, ai, |
| 616 | FORMAT_IP_ADJACENCY_DETAIL); |
| 617 | } |
| 618 | else |
| 619 | { |
| 620 | /* *INDENT-OFF* */ |
| 621 | pool_foreach_index(ai, adj_pool, |
| 622 | ({ |
| 623 | if (~0 != sw_if_index && |
| 624 | sw_if_index != adj_get_sw_if_index(ai)) |
| 625 | { |
| 626 | } |
| 627 | else |
| 628 | { |
| 629 | vlib_cli_output (vm, "[@%d] %U", |
| 630 | ai, |
| 631 | format_ip_adjacency, ai, |
| 632 | FORMAT_IP_ADJACENCY_NONE); |
| 633 | } |
| 634 | })); |
| 635 | /* *INDENT-ON* */ |
| 636 | } |
| 637 | } |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 638 | return 0; |
| 639 | } |
| 640 | |
| 641 | /*? |
| 642 | * Show all adjacencies. |
| 643 | * @cliexpar |
| 644 | * @cliexstart{sh adj} |
| 645 | * [@0] |
| 646 | * [@1] glean: loop0 |
| 647 | * [@2] ipv4 via 1.0.0.2 loop0: IP4: 00:00:22:aa:bb:cc -> 00:00:11:aa:bb:cc |
Neale Ranns | 0f26c5a | 2017-03-01 15:12:11 -0800 | [diff] [blame] | 648 | * [@3] mpls via 1.0.0.2 loop0: MPLS: 00:00:22:aa:bb:cc -> 00:00:11:aa:bb:cc |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 649 | * [@4] ipv4 via 1.0.0.3 loop0: IP4: 00:00:22:aa:bb:cc -> 00:00:11:aa:bb:cc |
Neale Ranns | 0f26c5a | 2017-03-01 15:12:11 -0800 | [diff] [blame] | 650 | * [@5] mpls via 1.0.0.3 loop0: MPLS: 00:00:22:aa:bb:cc -> 00:00:11:aa:bb:cc |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 651 | * @cliexend |
| 652 | ?*/ |
| 653 | VLIB_CLI_COMMAND (adj_show_command, static) = { |
| 654 | .path = "show adj", |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 655 | .short_help = "show adj [<adj_index>] [interface] [summary]", |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 656 | .function = adj_show, |
| 657 | }; |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 658 | |
| 659 | /** |
| 660 | * @brief CLI invoked function to enable/disable per-adj counters |
| 661 | */ |
| 662 | static clib_error_t * |
| 663 | adj_cli_counters_set (vlib_main_t * vm, |
| 664 | unformat_input_t * input, |
| 665 | vlib_cli_command_t * cmd) |
| 666 | { |
| 667 | clib_error_t *error = NULL; |
| 668 | int enable = ~0; |
| 669 | |
| 670 | while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| 671 | { |
| 672 | if (unformat (input, "enable")) |
| 673 | enable = 1; |
| 674 | else if (unformat (input, "disable")) |
| 675 | enable = 0; |
| 676 | else |
| 677 | break; |
| 678 | } |
| 679 | |
| 680 | if (enable != ~0) |
| 681 | { |
| 682 | /* user requested something sensible */ |
| 683 | adj_per_adj_counters = enable; |
| 684 | } |
| 685 | else |
| 686 | { |
| 687 | error = clib_error_return (0, "specify 'enable' or 'disable'"); |
| 688 | } |
| 689 | |
| 690 | return (error); |
| 691 | } |
| 692 | |
| 693 | /*? |
| 694 | * Enabe/disble per-adjacency counters. This is optional because it comes with |
| 695 | * a non-negligible performance cost. |
| 696 | ?*/ |
| 697 | VLIB_CLI_COMMAND (adj_cli_counters_set_command, static) = { |
| 698 | .path = "adjacency counters", |
| 699 | .short_help = "adjacency counters [enable|disable]", |
| 700 | .function = adj_cli_counters_set, |
| 701 | }; |