Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2015 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 | * ip/ip4_forward.c: IP v4 forwarding |
| 17 | * |
| 18 | * Copyright (c) 2008 Eliot Dresselhaus |
| 19 | * |
| 20 | * Permission is hereby granted, free of charge, to any person obtaining |
| 21 | * a copy of this software and associated documentation files (the |
| 22 | * "Software"), to deal in the Software without restriction, including |
| 23 | * without limitation the rights to use, copy, modify, merge, publish, |
| 24 | * distribute, sublicense, and/or sell copies of the Software, and to |
| 25 | * permit persons to whom the Software is furnished to do so, subject to |
| 26 | * the following conditions: |
| 27 | * |
| 28 | * The above copyright notice and this permission notice shall be |
| 29 | * included in all copies or substantial portions of the Software. |
| 30 | * |
| 31 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 32 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 33 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 34 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE |
| 35 | * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
| 36 | * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
| 37 | * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 38 | */ |
| 39 | |
| 40 | #include <vnet/vnet.h> |
| 41 | #include <vnet/ip/ip.h> |
Ole Troan | 313f7e2 | 2018-04-10 16:02:51 +0200 | [diff] [blame] | 42 | #include <vnet/ip/ip_frag.h> |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 43 | #include <vnet/ethernet/ethernet.h> /* for ethernet_header_t */ |
| 44 | #include <vnet/ethernet/arp_packet.h> /* for ethernet_arp_header_t */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 45 | #include <vnet/ppp/ppp.h> |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 46 | #include <vnet/srp/srp.h> /* for srp_hw_interface_class */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 47 | #include <vnet/api_errno.h> /* for API error numbers */ |
| 48 | #include <vnet/fib/fib_table.h> /* for FIB table and entry creation */ |
| 49 | #include <vnet/fib/fib_entry.h> /* for FIB table and entry creation */ |
| 50 | #include <vnet/fib/fib_urpf_list.h> /* for FIB uRPF check */ |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 51 | #include <vnet/fib/ip4_fib.h> |
| 52 | #include <vnet/dpo/load_balance.h> |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 53 | #include <vnet/dpo/load_balance_map.h> |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 54 | #include <vnet/dpo/classify_dpo.h> |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 55 | #include <vnet/mfib/mfib_table.h> /* for mFIB table and entry creation */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 56 | |
Vijayabhaskar Katamreddy | acbde66 | 2018-01-23 13:39:40 -0800 | [diff] [blame] | 57 | #include <vnet/ip/ip4_forward.h> |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 58 | |
Chris Luke | 8e5b041 | 2016-07-26 13:06:10 -0400 | [diff] [blame] | 59 | /** @brief IPv4 lookup node. |
Dave Barach | 9770e20 | 2016-07-06 10:29:27 -0400 | [diff] [blame] | 60 | @node ip4-lookup |
| 61 | |
| 62 | This is the main IPv4 lookup dispatch node. |
| 63 | |
| 64 | @param vm vlib_main_t corresponding to the current thread |
| 65 | @param node vlib_node_runtime_t |
| 66 | @param frame vlib_frame_t whose contents should be dispatched |
| 67 | |
| 68 | @par Graph mechanics: buffer metadata, next index usage |
| 69 | |
| 70 | @em Uses: |
| 71 | - <code>vnet_buffer(b)->sw_if_index[VLIB_RX]</code> |
| 72 | - Indicates the @c sw_if_index value of the interface that the |
| 73 | packet was received on. |
| 74 | - <code>vnet_buffer(b)->sw_if_index[VLIB_TX]</code> |
| 75 | - When the value is @c ~0 then the node performs a longest prefix |
| 76 | match (LPM) for the packet destination address in the FIB attached |
| 77 | to the receive interface. |
| 78 | - Otherwise perform LPM for the packet destination address in the |
| 79 | indicated FIB. In this case <code>[VLIB_TX]</code> is a FIB index |
| 80 | value (0, 1, ...) and not a VRF id. |
| 81 | |
| 82 | @em Sets: |
| 83 | - <code>vnet_buffer(b)->ip.adj_index[VLIB_TX]</code> |
| 84 | - The lookup result adjacency index. |
| 85 | |
| 86 | <em>Next Index:</em> |
| 87 | - Dispatches the packet to the node index found in |
| 88 | ip_adjacency_t @c adj->lookup_next_index |
| 89 | (where @c adj is the lookup result adjacency). |
| 90 | */ |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 91 | VLIB_NODE_FN (ip4_lookup_node) (vlib_main_t * vm, vlib_node_runtime_t * node, |
| 92 | vlib_frame_t * frame) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 93 | { |
Damjan Marion | aca64c9 | 2016-04-13 09:48:56 +0200 | [diff] [blame] | 94 | return ip4_lookup_inline (vm, node, frame, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 95 | /* lookup_for_responses_to_locally_received_packets */ |
| 96 | 0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 97 | |
| 98 | } |
| 99 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 100 | static u8 *format_ip4_lookup_trace (u8 * s, va_list * args); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 101 | |
Neale Ranns | f868632 | 2017-11-29 02:39:53 -0800 | [diff] [blame] | 102 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 103 | VLIB_REGISTER_NODE (ip4_lookup_node) = |
| 104 | { |
Neale Ranns | f868632 | 2017-11-29 02:39:53 -0800 | [diff] [blame] | 105 | .name = "ip4-lookup", |
| 106 | .vector_size = sizeof (u32), |
| 107 | .format_trace = format_ip4_lookup_trace, |
| 108 | .n_next_nodes = IP_LOOKUP_N_NEXT, |
| 109 | .next_nodes = IP4_LOOKUP_NEXT_NODES, |
| 110 | }; |
| 111 | /* *INDENT-ON* */ |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 112 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 113 | VLIB_NODE_FN (ip4_load_balance_node) (vlib_main_t * vm, |
| 114 | vlib_node_runtime_t * node, |
| 115 | vlib_frame_t * frame) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 116 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 117 | vlib_combined_counter_main_t *cm = &load_balance_main.lbm_via_counters; |
| 118 | u32 n_left_from, n_left_to_next, *from, *to_next; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 119 | ip_lookup_next_t next; |
Damjan Marion | 067cd62 | 2018-07-11 12:47:43 +0200 | [diff] [blame] | 120 | u32 thread_index = vm->thread_index; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 121 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 122 | from = vlib_frame_vector_args (frame); |
| 123 | n_left_from = frame->n_vectors; |
| 124 | next = node->cached_next_index; |
| 125 | |
| 126 | if (node->flags & VLIB_NODE_FLAG_TRACE) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 127 | ip4_forward_next_trace (vm, node, frame, VLIB_TX); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 128 | |
| 129 | while (n_left_from > 0) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 130 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 131 | vlib_get_next_frame (vm, node, next, to_next, n_left_to_next); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 132 | |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 133 | |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 134 | while (n_left_from >= 4 && n_left_to_next >= 2) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 135 | { |
| 136 | ip_lookup_next_t next0, next1; |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 137 | const load_balance_t *lb0, *lb1; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 138 | vlib_buffer_t *p0, *p1; |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 139 | u32 pi0, lbi0, hc0, pi1, lbi1, hc1; |
| 140 | const ip4_header_t *ip0, *ip1; |
| 141 | const dpo_id_t *dpo0, *dpo1; |
| 142 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 143 | /* Prefetch next iteration. */ |
| 144 | { |
| 145 | vlib_buffer_t *p2, *p3; |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 146 | |
| 147 | p2 = vlib_get_buffer (vm, from[2]); |
| 148 | p3 = vlib_get_buffer (vm, from[3]); |
| 149 | |
| 150 | vlib_prefetch_buffer_header (p2, STORE); |
| 151 | vlib_prefetch_buffer_header (p3, STORE); |
| 152 | |
| 153 | CLIB_PREFETCH (p2->data, sizeof (ip0[0]), STORE); |
| 154 | CLIB_PREFETCH (p3->data, sizeof (ip0[0]), STORE); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 155 | } |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 156 | |
| 157 | pi0 = to_next[0] = from[0]; |
| 158 | pi1 = to_next[1] = from[1]; |
| 159 | |
| 160 | from += 2; |
| 161 | n_left_from -= 2; |
| 162 | to_next += 2; |
| 163 | n_left_to_next -= 2; |
| 164 | |
| 165 | p0 = vlib_get_buffer (vm, pi0); |
| 166 | p1 = vlib_get_buffer (vm, pi1); |
| 167 | |
| 168 | ip0 = vlib_buffer_get_current (p0); |
| 169 | ip1 = vlib_buffer_get_current (p1); |
| 170 | lbi0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX]; |
| 171 | lbi1 = vnet_buffer (p1)->ip.adj_index[VLIB_TX]; |
| 172 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 173 | lb0 = load_balance_get (lbi0); |
| 174 | lb1 = load_balance_get (lbi1); |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 175 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 176 | /* |
| 177 | * this node is for via FIBs we can re-use the hash value from the |
| 178 | * to node if present. |
| 179 | * We don't want to use the same hash value at each level in the recursion |
| 180 | * graph as that would lead to polarisation |
| 181 | */ |
AkshayaNadahalli | 153b871 | 2017-03-06 18:22:29 +0000 | [diff] [blame] | 182 | hc0 = hc1 = 0; |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 183 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 184 | if (PREDICT_FALSE (lb0->lb_n_buckets > 1)) |
| 185 | { |
| 186 | if (PREDICT_TRUE (vnet_buffer (p0)->ip.flow_hash)) |
| 187 | { |
| 188 | hc0 = vnet_buffer (p0)->ip.flow_hash = |
| 189 | vnet_buffer (p0)->ip.flow_hash >> 1; |
| 190 | } |
| 191 | else |
| 192 | { |
| 193 | hc0 = vnet_buffer (p0)->ip.flow_hash = |
AkshayaNadahalli | 153b871 | 2017-03-06 18:22:29 +0000 | [diff] [blame] | 194 | ip4_compute_flow_hash (ip0, lb0->lb_hash_config); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 195 | } |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 196 | dpo0 = load_balance_get_fwd_bucket |
| 197 | (lb0, (hc0 & (lb0->lb_n_buckets_minus_1))); |
| 198 | } |
| 199 | else |
| 200 | { |
| 201 | dpo0 = load_balance_get_bucket_i (lb0, 0); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 202 | } |
| 203 | if (PREDICT_FALSE (lb1->lb_n_buckets > 1)) |
| 204 | { |
| 205 | if (PREDICT_TRUE (vnet_buffer (p1)->ip.flow_hash)) |
| 206 | { |
| 207 | hc1 = vnet_buffer (p1)->ip.flow_hash = |
| 208 | vnet_buffer (p1)->ip.flow_hash >> 1; |
| 209 | } |
| 210 | else |
| 211 | { |
| 212 | hc1 = vnet_buffer (p1)->ip.flow_hash = |
AkshayaNadahalli | 153b871 | 2017-03-06 18:22:29 +0000 | [diff] [blame] | 213 | ip4_compute_flow_hash (ip1, lb1->lb_hash_config); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 214 | } |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 215 | dpo1 = load_balance_get_fwd_bucket |
| 216 | (lb1, (hc1 & (lb1->lb_n_buckets_minus_1))); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 217 | } |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 218 | else |
| 219 | { |
| 220 | dpo1 = load_balance_get_bucket_i (lb1, 0); |
| 221 | } |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 222 | |
| 223 | next0 = dpo0->dpoi_next_node; |
| 224 | next1 = dpo1->dpoi_next_node; |
| 225 | |
| 226 | vnet_buffer (p0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index; |
| 227 | vnet_buffer (p1)->ip.adj_index[VLIB_TX] = dpo1->dpoi_index; |
| 228 | |
| 229 | vlib_increment_combined_counter |
Damjan Marion | 586afd7 | 2017-04-05 19:18:20 +0200 | [diff] [blame] | 230 | (cm, thread_index, lbi0, 1, vlib_buffer_length_in_chain (vm, p0)); |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 231 | vlib_increment_combined_counter |
Damjan Marion | 586afd7 | 2017-04-05 19:18:20 +0200 | [diff] [blame] | 232 | (cm, thread_index, lbi1, 1, vlib_buffer_length_in_chain (vm, p1)); |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 233 | |
| 234 | vlib_validate_buffer_enqueue_x2 (vm, node, next, |
| 235 | to_next, n_left_to_next, |
| 236 | pi0, pi1, next0, next1); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 237 | } |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 238 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 239 | while (n_left_from > 0 && n_left_to_next > 0) |
| 240 | { |
| 241 | ip_lookup_next_t next0; |
| 242 | const load_balance_t *lb0; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 243 | vlib_buffer_t *p0; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 244 | u32 pi0, lbi0, hc0; |
| 245 | const ip4_header_t *ip0; |
| 246 | const dpo_id_t *dpo0; |
| 247 | |
| 248 | pi0 = from[0]; |
| 249 | to_next[0] = pi0; |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 250 | from += 1; |
| 251 | to_next += 1; |
| 252 | n_left_to_next -= 1; |
| 253 | n_left_from -= 1; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 254 | |
| 255 | p0 = vlib_get_buffer (vm, pi0); |
| 256 | |
| 257 | ip0 = vlib_buffer_get_current (p0); |
| 258 | lbi0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX]; |
| 259 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 260 | lb0 = load_balance_get (lbi0); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 261 | |
AkshayaNadahalli | 153b871 | 2017-03-06 18:22:29 +0000 | [diff] [blame] | 262 | hc0 = 0; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 263 | if (PREDICT_FALSE (lb0->lb_n_buckets > 1)) |
| 264 | { |
| 265 | if (PREDICT_TRUE (vnet_buffer (p0)->ip.flow_hash)) |
| 266 | { |
| 267 | hc0 = vnet_buffer (p0)->ip.flow_hash = |
| 268 | vnet_buffer (p0)->ip.flow_hash >> 1; |
| 269 | } |
| 270 | else |
| 271 | { |
| 272 | hc0 = vnet_buffer (p0)->ip.flow_hash = |
AkshayaNadahalli | 153b871 | 2017-03-06 18:22:29 +0000 | [diff] [blame] | 273 | ip4_compute_flow_hash (ip0, lb0->lb_hash_config); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 274 | } |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 275 | dpo0 = load_balance_get_fwd_bucket |
| 276 | (lb0, (hc0 & (lb0->lb_n_buckets_minus_1))); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 277 | } |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 278 | else |
| 279 | { |
| 280 | dpo0 = load_balance_get_bucket_i (lb0, 0); |
| 281 | } |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 282 | |
| 283 | next0 = dpo0->dpoi_next_node; |
| 284 | vnet_buffer (p0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index; |
| 285 | |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 286 | vlib_increment_combined_counter |
Damjan Marion | 586afd7 | 2017-04-05 19:18:20 +0200 | [diff] [blame] | 287 | (cm, thread_index, lbi0, 1, vlib_buffer_length_in_chain (vm, p0)); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 288 | |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 289 | vlib_validate_buffer_enqueue_x1 (vm, node, next, |
| 290 | to_next, n_left_to_next, |
| 291 | pi0, next0); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 292 | } |
| 293 | |
| 294 | vlib_put_next_frame (vm, node, next, n_left_to_next); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 295 | } |
| 296 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 297 | return frame->n_vectors; |
| 298 | } |
| 299 | |
Neale Ranns | f868632 | 2017-11-29 02:39:53 -0800 | [diff] [blame] | 300 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 301 | VLIB_REGISTER_NODE (ip4_load_balance_node) = |
| 302 | { |
Neale Ranns | f868632 | 2017-11-29 02:39:53 -0800 | [diff] [blame] | 303 | .name = "ip4-load-balance", |
| 304 | .vector_size = sizeof (u32), |
| 305 | .sibling_of = "ip4-lookup", |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 306 | .format_trace = format_ip4_lookup_trace, |
Neale Ranns | f868632 | 2017-11-29 02:39:53 -0800 | [diff] [blame] | 307 | }; |
| 308 | /* *INDENT-ON* */ |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 309 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 310 | #ifndef CLIB_MARCH_VARIANT |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 311 | /* get first interface address */ |
| 312 | ip4_address_t * |
| 313 | ip4_interface_first_address (ip4_main_t * im, u32 sw_if_index, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 314 | ip_interface_address_t ** result_ia) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 315 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 316 | ip_lookup_main_t *lm = &im->lookup_main; |
| 317 | ip_interface_address_t *ia = 0; |
| 318 | ip4_address_t *result = 0; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 319 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 320 | /* *INDENT-OFF* */ |
| 321 | foreach_ip_interface_address |
| 322 | (lm, ia, sw_if_index, |
| 323 | 1 /* honor unnumbered */ , |
| 324 | ({ |
| 325 | ip4_address_t * a = |
| 326 | ip_interface_address_get_address (lm, ia); |
| 327 | result = a; |
| 328 | break; |
| 329 | })); |
| 330 | /* *INDENT-OFF* */ |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 331 | if (result_ia) |
| 332 | *result_ia = result ? ia : 0; |
| 333 | return result; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 334 | } |
| 335 | |
| 336 | static void |
Neale Ranns | 1855b8e | 2018-07-11 10:31:26 -0700 | [diff] [blame] | 337 | ip4_add_subnet_bcast_route (u32 fib_index, |
| 338 | fib_prefix_t *pfx, |
| 339 | u32 sw_if_index) |
| 340 | { |
| 341 | vnet_sw_interface_flags_t iflags; |
| 342 | |
| 343 | iflags = vnet_sw_interface_get_flags(vnet_get_main(), sw_if_index); |
| 344 | |
| 345 | fib_table_entry_special_remove(fib_index, |
| 346 | pfx, |
| 347 | FIB_SOURCE_INTERFACE); |
| 348 | |
| 349 | if (iflags & VNET_SW_INTERFACE_FLAG_DIRECTED_BCAST) |
| 350 | { |
| 351 | fib_table_entry_update_one_path (fib_index, pfx, |
| 352 | FIB_SOURCE_INTERFACE, |
| 353 | FIB_ENTRY_FLAG_NONE, |
| 354 | DPO_PROTO_IP4, |
| 355 | /* No next-hop address */ |
| 356 | &ADJ_BCAST_ADDR, |
| 357 | sw_if_index, |
| 358 | // invalid FIB index |
| 359 | ~0, |
| 360 | 1, |
| 361 | // no out-label stack |
| 362 | NULL, |
| 363 | FIB_ROUTE_PATH_FLAG_NONE); |
| 364 | } |
| 365 | else |
| 366 | { |
| 367 | fib_table_entry_special_add(fib_index, |
| 368 | pfx, |
| 369 | FIB_SOURCE_INTERFACE, |
| 370 | (FIB_ENTRY_FLAG_DROP | |
| 371 | FIB_ENTRY_FLAG_LOOSE_URPF_EXEMPT)); |
| 372 | } |
| 373 | } |
| 374 | |
| 375 | static void |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 376 | ip4_add_interface_routes (u32 sw_if_index, |
| 377 | ip4_main_t * im, u32 fib_index, |
| 378 | ip_interface_address_t * a) |
| 379 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 380 | ip_lookup_main_t *lm = &im->lookup_main; |
| 381 | ip4_address_t *address = ip_interface_address_get_address (lm, a); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 382 | fib_prefix_t pfx = { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 383 | .fp_len = a->address_length, |
| 384 | .fp_proto = FIB_PROTOCOL_IP4, |
| 385 | .fp_addr.ip4 = *address, |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 386 | }; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 387 | |
Neale Ranns | 9a69a60 | 2017-03-26 10:56:33 -0700 | [diff] [blame] | 388 | if (pfx.fp_len <= 30) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 389 | { |
Neale Ranns | 9a69a60 | 2017-03-26 10:56:33 -0700 | [diff] [blame] | 390 | /* a /30 or shorter - add a glean for the network address */ |
Neale Ranns | 7a27274 | 2017-05-30 02:08:14 -0700 | [diff] [blame] | 391 | fib_table_entry_update_one_path (fib_index, &pfx, |
| 392 | FIB_SOURCE_INTERFACE, |
| 393 | (FIB_ENTRY_FLAG_CONNECTED | |
| 394 | FIB_ENTRY_FLAG_ATTACHED), |
Neale Ranns | da78f95 | 2017-05-24 09:15:43 -0700 | [diff] [blame] | 395 | DPO_PROTO_IP4, |
Neale Ranns | 7a27274 | 2017-05-30 02:08:14 -0700 | [diff] [blame] | 396 | /* No next-hop address */ |
| 397 | NULL, |
| 398 | sw_if_index, |
| 399 | // invalid FIB index |
| 400 | ~0, |
| 401 | 1, |
| 402 | // no out-label stack |
| 403 | NULL, |
| 404 | FIB_ROUTE_PATH_FLAG_NONE); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 405 | |
Neale Ranns | 9a69a60 | 2017-03-26 10:56:33 -0700 | [diff] [blame] | 406 | /* Add the two broadcast addresses as drop */ |
| 407 | fib_prefix_t net_pfx = { |
| 408 | .fp_len = 32, |
| 409 | .fp_proto = FIB_PROTOCOL_IP4, |
| 410 | .fp_addr.ip4.as_u32 = address->as_u32 & im->fib_masks[pfx.fp_len], |
| 411 | }; |
| 412 | if (net_pfx.fp_addr.ip4.as_u32 != pfx.fp_addr.ip4.as_u32) |
| 413 | fib_table_entry_special_add(fib_index, |
| 414 | &net_pfx, |
| 415 | FIB_SOURCE_INTERFACE, |
| 416 | (FIB_ENTRY_FLAG_DROP | |
Neale Ranns | a055830 | 2017-04-13 00:44:52 -0700 | [diff] [blame] | 417 | FIB_ENTRY_FLAG_LOOSE_URPF_EXEMPT)); |
Neale Ranns | 9a69a60 | 2017-03-26 10:56:33 -0700 | [diff] [blame] | 418 | net_pfx.fp_addr.ip4.as_u32 |= ~im->fib_masks[pfx.fp_len]; |
| 419 | if (net_pfx.fp_addr.ip4.as_u32 != pfx.fp_addr.ip4.as_u32) |
Neale Ranns | 1855b8e | 2018-07-11 10:31:26 -0700 | [diff] [blame] | 420 | ip4_add_subnet_bcast_route(fib_index, &net_pfx, sw_if_index); |
Neale Ranns | 9a69a60 | 2017-03-26 10:56:33 -0700 | [diff] [blame] | 421 | } |
| 422 | else if (pfx.fp_len == 31) |
| 423 | { |
| 424 | u32 mask = clib_host_to_net_u32(1); |
| 425 | fib_prefix_t net_pfx = pfx; |
| 426 | |
| 427 | net_pfx.fp_len = 32; |
| 428 | net_pfx.fp_addr.ip4.as_u32 ^= mask; |
| 429 | |
| 430 | /* a /31 - add the other end as an attached host */ |
| 431 | fib_table_entry_update_one_path (fib_index, &net_pfx, |
| 432 | FIB_SOURCE_INTERFACE, |
| 433 | (FIB_ENTRY_FLAG_ATTACHED), |
Neale Ranns | da78f95 | 2017-05-24 09:15:43 -0700 | [diff] [blame] | 434 | DPO_PROTO_IP4, |
Neale Ranns | 9a69a60 | 2017-03-26 10:56:33 -0700 | [diff] [blame] | 435 | &net_pfx.fp_addr, |
| 436 | sw_if_index, |
| 437 | // invalid FIB index |
| 438 | ~0, |
| 439 | 1, |
| 440 | NULL, |
| 441 | FIB_ROUTE_PATH_FLAG_NONE); |
| 442 | } |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 443 | pfx.fp_len = 32; |
| 444 | |
| 445 | if (sw_if_index < vec_len (lm->classify_table_index_by_sw_if_index)) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 446 | { |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 447 | u32 classify_table_index = |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 448 | lm->classify_table_index_by_sw_if_index[sw_if_index]; |
| 449 | if (classify_table_index != (u32) ~ 0) |
| 450 | { |
| 451 | dpo_id_t dpo = DPO_INVALID; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 452 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 453 | dpo_set (&dpo, |
| 454 | DPO_CLASSIFY, |
| 455 | DPO_PROTO_IP4, |
| 456 | classify_dpo_create (DPO_PROTO_IP4, classify_table_index)); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 457 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 458 | fib_table_entry_special_dpo_add (fib_index, |
| 459 | &pfx, |
| 460 | FIB_SOURCE_CLASSIFY, |
| 461 | FIB_ENTRY_FLAG_NONE, &dpo); |
| 462 | dpo_reset (&dpo); |
| 463 | } |
| 464 | } |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 465 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 466 | fib_table_entry_update_one_path (fib_index, &pfx, |
| 467 | FIB_SOURCE_INTERFACE, |
| 468 | (FIB_ENTRY_FLAG_CONNECTED | |
| 469 | FIB_ENTRY_FLAG_LOCAL), |
Neale Ranns | da78f95 | 2017-05-24 09:15:43 -0700 | [diff] [blame] | 470 | DPO_PROTO_IP4, |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 471 | &pfx.fp_addr, |
| 472 | sw_if_index, |
| 473 | // invalid FIB index |
| 474 | ~0, |
| 475 | 1, NULL, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 476 | FIB_ROUTE_PATH_FLAG_NONE); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 477 | } |
| 478 | |
| 479 | static void |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 480 | ip4_del_interface_routes (ip4_main_t * im, |
| 481 | u32 fib_index, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 482 | ip4_address_t * address, u32 address_length) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 483 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 484 | fib_prefix_t pfx = { |
| 485 | .fp_len = address_length, |
| 486 | .fp_proto = FIB_PROTOCOL_IP4, |
| 487 | .fp_addr.ip4 = *address, |
| 488 | }; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 489 | |
Neale Ranns | 9a69a60 | 2017-03-26 10:56:33 -0700 | [diff] [blame] | 490 | if (pfx.fp_len <= 30) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 491 | { |
Neale Ranns | 9a69a60 | 2017-03-26 10:56:33 -0700 | [diff] [blame] | 492 | fib_prefix_t net_pfx = { |
| 493 | .fp_len = 32, |
| 494 | .fp_proto = FIB_PROTOCOL_IP4, |
| 495 | .fp_addr.ip4.as_u32 = address->as_u32 & im->fib_masks[pfx.fp_len], |
| 496 | }; |
| 497 | if (net_pfx.fp_addr.ip4.as_u32 != pfx.fp_addr.ip4.as_u32) |
| 498 | fib_table_entry_special_remove(fib_index, |
| 499 | &net_pfx, |
| 500 | FIB_SOURCE_INTERFACE); |
| 501 | net_pfx.fp_addr.ip4.as_u32 |= ~im->fib_masks[pfx.fp_len]; |
| 502 | if (net_pfx.fp_addr.ip4.as_u32 != pfx.fp_addr.ip4.as_u32) |
| 503 | fib_table_entry_special_remove(fib_index, |
| 504 | &net_pfx, |
| 505 | FIB_SOURCE_INTERFACE); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 506 | fib_table_entry_delete (fib_index, &pfx, FIB_SOURCE_INTERFACE); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 507 | } |
Neale Ranns | 9a69a60 | 2017-03-26 10:56:33 -0700 | [diff] [blame] | 508 | else if (pfx.fp_len == 31) |
| 509 | { |
| 510 | u32 mask = clib_host_to_net_u32(1); |
| 511 | fib_prefix_t net_pfx = pfx; |
| 512 | |
| 513 | net_pfx.fp_len = 32; |
| 514 | net_pfx.fp_addr.ip4.as_u32 ^= mask; |
| 515 | |
| 516 | fib_table_entry_delete (fib_index, &net_pfx, FIB_SOURCE_INTERFACE); |
| 517 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 518 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 519 | pfx.fp_len = 32; |
| 520 | fib_table_entry_delete (fib_index, &pfx, FIB_SOURCE_INTERFACE); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 521 | } |
| 522 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 523 | void |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 524 | ip4_sw_interface_enable_disable (u32 sw_if_index, u32 is_enable) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 525 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 526 | ip4_main_t *im = &ip4_main; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 527 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 528 | vec_validate_init_empty (im->ip_enabled_by_sw_if_index, sw_if_index, 0); |
| 529 | |
| 530 | /* |
| 531 | * enable/disable only on the 1<->0 transition |
| 532 | */ |
| 533 | if (is_enable) |
| 534 | { |
| 535 | if (1 != ++im->ip_enabled_by_sw_if_index[sw_if_index]) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 536 | return; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 537 | } |
| 538 | else |
| 539 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 540 | ASSERT (im->ip_enabled_by_sw_if_index[sw_if_index] > 0); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 541 | if (0 != --im->ip_enabled_by_sw_if_index[sw_if_index]) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 542 | return; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 543 | } |
Neale Ranns | 8269d3d | 2018-01-30 09:02:20 -0800 | [diff] [blame] | 544 | vnet_feature_enable_disable ("ip4-unicast", "ip4-not-enabled", sw_if_index, |
Damjan Marion | 4d48993 | 2016-12-09 03:21:27 -0800 | [diff] [blame] | 545 | !is_enable, 0, 0); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 546 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 547 | |
Neale Ranns | 8269d3d | 2018-01-30 09:02:20 -0800 | [diff] [blame] | 548 | vnet_feature_enable_disable ("ip4-multicast", "ip4-not-enabled", |
Neale Ranns | 180279b | 2017-03-16 15:49:09 -0400 | [diff] [blame] | 549 | sw_if_index, !is_enable, 0, 0); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 550 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 551 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 552 | static clib_error_t * |
| 553 | ip4_add_del_interface_address_internal (vlib_main_t * vm, |
| 554 | u32 sw_if_index, |
| 555 | ip4_address_t * address, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 556 | u32 address_length, u32 is_del) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 557 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 558 | vnet_main_t *vnm = vnet_get_main (); |
| 559 | ip4_main_t *im = &ip4_main; |
| 560 | ip_lookup_main_t *lm = &im->lookup_main; |
| 561 | clib_error_t *error = 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 562 | u32 if_address_index, elts_before; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 563 | ip4_address_fib_t ip4_af, *addr_fib = 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 564 | |
Pavel Kotucek | 5780898 | 2017-08-02 08:20:19 +0200 | [diff] [blame] | 565 | /* local0 interface doesn't support IP addressing */ |
| 566 | if (sw_if_index == 0) |
| 567 | { |
| 568 | return |
| 569 | clib_error_create ("local0 interface doesn't support IP addressing"); |
| 570 | } |
| 571 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 572 | vec_validate (im->fib_index_by_sw_if_index, sw_if_index); |
| 573 | ip4_addr_fib_init (&ip4_af, address, |
| 574 | vec_elt (im->fib_index_by_sw_if_index, sw_if_index)); |
| 575 | vec_add1 (addr_fib, ip4_af); |
| 576 | |
Neale Ranns | 744902e | 2017-08-14 10:35:44 -0700 | [diff] [blame] | 577 | /* |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 578 | * there is no support for adj-fib handling in the presence of overlapping |
| 579 | * subnets on interfaces. Easy fix - disallow overlapping subnets, like |
| 580 | * most routers do. |
| 581 | */ |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 582 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 583 | if (!is_del) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 584 | { |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 585 | /* When adding an address check that it does not conflict |
Neale Ranns | 744902e | 2017-08-14 10:35:44 -0700 | [diff] [blame] | 586 | with an existing address on any interface in this table. */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 587 | ip_interface_address_t *ia; |
Neale Ranns | 744902e | 2017-08-14 10:35:44 -0700 | [diff] [blame] | 588 | vnet_sw_interface_t *sif; |
| 589 | |
| 590 | pool_foreach(sif, vnm->interface_main.sw_interfaces, |
| 591 | ({ |
| 592 | if (im->fib_index_by_sw_if_index[sw_if_index] == |
| 593 | im->fib_index_by_sw_if_index[sif->sw_if_index]) |
| 594 | { |
| 595 | foreach_ip_interface_address |
| 596 | (&im->lookup_main, ia, sif->sw_if_index, |
| 597 | 0 /* honor unnumbered */ , |
| 598 | ({ |
| 599 | ip4_address_t * x = |
| 600 | ip_interface_address_get_address |
| 601 | (&im->lookup_main, ia); |
| 602 | if (ip4_destination_matches_route |
| 603 | (im, address, x, ia->address_length) || |
| 604 | ip4_destination_matches_route (im, |
| 605 | x, |
| 606 | address, |
| 607 | address_length)) |
| 608 | { |
| 609 | vnm->api_errno = VNET_API_ERROR_DUPLICATE_IF_ADDRESS; |
| 610 | |
| 611 | return |
| 612 | clib_error_create |
| 613 | ("failed to add %U which conflicts with %U for interface %U", |
| 614 | format_ip4_address_and_length, address, |
| 615 | address_length, |
| 616 | format_ip4_address_and_length, x, |
| 617 | ia->address_length, |
| 618 | format_vnet_sw_if_index_name, vnm, |
| 619 | sif->sw_if_index); |
| 620 | } |
| 621 | })); |
| 622 | } |
| 623 | })); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 624 | } |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 625 | /* *INDENT-ON* */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 626 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 627 | elts_before = pool_elts (lm->if_address_pool); |
| 628 | |
| 629 | error = ip_interface_address_add_del |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 630 | (lm, sw_if_index, addr_fib, address_length, is_del, &if_address_index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 631 | if (error) |
| 632 | goto done; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 633 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 634 | ip4_sw_interface_enable_disable (sw_if_index, !is_del); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 635 | |
| 636 | if (is_del) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 637 | ip4_del_interface_routes (im, ip4_af.fib_index, address, address_length); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 638 | else |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 639 | ip4_add_interface_routes (sw_if_index, |
| 640 | im, ip4_af.fib_index, |
| 641 | pool_elt_at_index |
| 642 | (lm->if_address_pool, if_address_index)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 643 | |
| 644 | /* If pool did not grow/shrink: add duplicate address. */ |
| 645 | if (elts_before != pool_elts (lm->if_address_pool)) |
| 646 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 647 | ip4_add_del_interface_address_callback_t *cb; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 648 | vec_foreach (cb, im->add_del_interface_address_callbacks) |
| 649 | cb->function (im, cb->function_opaque, sw_if_index, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 650 | address, address_length, if_address_index, is_del); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 651 | } |
| 652 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 653 | done: |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 654 | vec_free (addr_fib); |
| 655 | return error; |
| 656 | } |
| 657 | |
| 658 | clib_error_t * |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 659 | ip4_add_del_interface_address (vlib_main_t * vm, |
| 660 | u32 sw_if_index, |
| 661 | ip4_address_t * address, |
| 662 | u32 address_length, u32 is_del) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 663 | { |
| 664 | return ip4_add_del_interface_address_internal |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 665 | (vm, sw_if_index, address, address_length, is_del); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 666 | } |
| 667 | |
Neale Ranns | 1855b8e | 2018-07-11 10:31:26 -0700 | [diff] [blame] | 668 | void |
| 669 | ip4_directed_broadcast (u32 sw_if_index, u8 enable) |
| 670 | { |
| 671 | ip_interface_address_t *ia; |
| 672 | ip4_main_t *im; |
| 673 | |
| 674 | im = &ip4_main; |
| 675 | |
| 676 | /* |
| 677 | * when directed broadcast is enabled, the subnet braodcast route will forward |
| 678 | * packets using an adjacency with a broadcast MAC. otherwise it drops |
| 679 | */ |
| 680 | /* *INDENT-OFF* */ |
| 681 | foreach_ip_interface_address(&im->lookup_main, ia, |
| 682 | sw_if_index, 0, |
| 683 | ({ |
| 684 | if (ia->address_length <= 30) |
| 685 | { |
| 686 | ip4_address_t *ipa; |
| 687 | |
| 688 | ipa = ip_interface_address_get_address (&im->lookup_main, ia); |
| 689 | |
| 690 | fib_prefix_t pfx = { |
| 691 | .fp_len = 32, |
| 692 | .fp_proto = FIB_PROTOCOL_IP4, |
| 693 | .fp_addr = { |
| 694 | .ip4.as_u32 = (ipa->as_u32 | ~im->fib_masks[ia->address_length]), |
| 695 | }, |
| 696 | }; |
| 697 | |
| 698 | ip4_add_subnet_bcast_route |
| 699 | (fib_table_get_index_for_sw_if_index(FIB_PROTOCOL_IP4, |
| 700 | sw_if_index), |
| 701 | &pfx, sw_if_index); |
| 702 | } |
| 703 | })); |
| 704 | /* *INDENT-ON* */ |
| 705 | } |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 706 | #endif |
Neale Ranns | 1855b8e | 2018-07-11 10:31:26 -0700 | [diff] [blame] | 707 | |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 708 | /* Built-in ip4 unicast rx feature path definition */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 709 | /* *INDENT-OFF* */ |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 710 | VNET_FEATURE_ARC_INIT (ip4_unicast, static) = |
| 711 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 712 | .arc_name = "ip4-unicast", |
Damjan Marion | 892e076 | 2016-12-09 18:52:05 +0100 | [diff] [blame] | 713 | .start_nodes = VNET_FEATURES ("ip4-input", "ip4-input-no-checksum"), |
| 714 | .arc_index_ptr = &ip4_main.lookup_main.ucast_feature_arc_index, |
| 715 | }; |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 716 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 717 | VNET_FEATURE_INIT (ip4_flow_classify, static) = |
| 718 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 719 | .arc_name = "ip4-unicast", |
Juraj Sloboda | 506b245 | 2016-08-07 23:45:24 -0700 | [diff] [blame] | 720 | .node_name = "ip4-flow-classify", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 721 | .runs_before = VNET_FEATURES ("ip4-inacl"), |
Juraj Sloboda | 506b245 | 2016-08-07 23:45:24 -0700 | [diff] [blame] | 722 | }; |
| 723 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 724 | VNET_FEATURE_INIT (ip4_inacl, static) = |
| 725 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 726 | .arc_name = "ip4-unicast", |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 727 | .node_name = "ip4-inacl", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 728 | .runs_before = VNET_FEATURES ("ip4-source-check-via-rx"), |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 729 | }; |
| 730 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 731 | VNET_FEATURE_INIT (ip4_source_check_1, static) = |
| 732 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 733 | .arc_name = "ip4-unicast", |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 734 | .node_name = "ip4-source-check-via-rx", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 735 | .runs_before = VNET_FEATURES ("ip4-source-check-via-any"), |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 736 | }; |
| 737 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 738 | VNET_FEATURE_INIT (ip4_source_check_2, static) = |
| 739 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 740 | .arc_name = "ip4-unicast", |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 741 | .node_name = "ip4-source-check-via-any", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 742 | .runs_before = VNET_FEATURES ("ip4-policer-classify"), |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 743 | }; |
| 744 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 745 | VNET_FEATURE_INIT (ip4_source_and_port_range_check_rx, static) = |
| 746 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 747 | .arc_name = "ip4-unicast", |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 748 | .node_name = "ip4-source-and-port-range-check-rx", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 749 | .runs_before = VNET_FEATURES ("ip4-policer-classify"), |
Dave Barach | 6f9bca2 | 2016-04-30 10:25:32 -0400 | [diff] [blame] | 750 | }; |
| 751 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 752 | VNET_FEATURE_INIT (ip4_policer_classify, static) = |
| 753 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 754 | .arc_name = "ip4-unicast", |
Matus Fabian | 70e6a8d | 2016-06-20 08:10:42 -0700 | [diff] [blame] | 755 | .node_name = "ip4-policer-classify", |
Klement Sekera | be5a5dd | 2018-10-09 16:05:48 +0200 | [diff] [blame] | 756 | .runs_before = VNET_FEATURES ("ipsec4-input"), |
Matus Fabian | 70e6a8d | 2016-06-20 08:10:42 -0700 | [diff] [blame] | 757 | }; |
| 758 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 759 | VNET_FEATURE_INIT (ip4_ipsec, static) = |
| 760 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 761 | .arc_name = "ip4-unicast", |
Klement Sekera | be5a5dd | 2018-10-09 16:05:48 +0200 | [diff] [blame] | 762 | .node_name = "ipsec4-input", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 763 | .runs_before = VNET_FEATURES ("vpath-input-ip4"), |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 764 | }; |
| 765 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 766 | VNET_FEATURE_INIT (ip4_vpath, static) = |
| 767 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 768 | .arc_name = "ip4-unicast", |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 769 | .node_name = "vpath-input-ip4", |
John Lo | 37682e1 | 2016-11-30 12:51:39 -0500 | [diff] [blame] | 770 | .runs_before = VNET_FEATURES ("ip4-vxlan-bypass"), |
| 771 | }; |
| 772 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 773 | VNET_FEATURE_INIT (ip4_vxlan_bypass, static) = |
| 774 | { |
John Lo | 37682e1 | 2016-11-30 12:51:39 -0500 | [diff] [blame] | 775 | .arc_name = "ip4-unicast", |
| 776 | .node_name = "ip4-vxlan-bypass", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 777 | .runs_before = VNET_FEATURES ("ip4-lookup"), |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 778 | }; |
| 779 | |
Neale Ranns | 8269d3d | 2018-01-30 09:02:20 -0800 | [diff] [blame] | 780 | VNET_FEATURE_INIT (ip4_not_enabled, static) = |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 781 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 782 | .arc_name = "ip4-unicast", |
Neale Ranns | 8269d3d | 2018-01-30 09:02:20 -0800 | [diff] [blame] | 783 | .node_name = "ip4-not-enabled", |
Neale Ranns | 180279b | 2017-03-16 15:49:09 -0400 | [diff] [blame] | 784 | .runs_before = VNET_FEATURES ("ip4-lookup"), |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 785 | }; |
| 786 | |
Neale Ranns | 180279b | 2017-03-16 15:49:09 -0400 | [diff] [blame] | 787 | VNET_FEATURE_INIT (ip4_lookup, static) = |
| 788 | { |
| 789 | .arc_name = "ip4-unicast", |
| 790 | .node_name = "ip4-lookup", |
| 791 | .runs_before = 0, /* not before any other features */ |
| 792 | }; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 793 | |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 794 | /* Built-in ip4 multicast rx feature path definition */ |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 795 | VNET_FEATURE_ARC_INIT (ip4_multicast, static) = |
| 796 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 797 | .arc_name = "ip4-multicast", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 798 | .start_nodes = VNET_FEATURES ("ip4-input", "ip4-input-no-checksum"), |
| 799 | .arc_index_ptr = &ip4_main.lookup_main.mcast_feature_arc_index, |
| 800 | }; |
| 801 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 802 | VNET_FEATURE_INIT (ip4_vpath_mc, static) = |
| 803 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 804 | .arc_name = "ip4-multicast", |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 805 | .node_name = "vpath-input-ip4", |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 806 | .runs_before = VNET_FEATURES ("ip4-mfib-forward-lookup"), |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 807 | }; |
| 808 | |
Neale Ranns | 8269d3d | 2018-01-30 09:02:20 -0800 | [diff] [blame] | 809 | VNET_FEATURE_INIT (ip4_mc_not_enabled, static) = |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 810 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 811 | .arc_name = "ip4-multicast", |
Neale Ranns | 8269d3d | 2018-01-30 09:02:20 -0800 | [diff] [blame] | 812 | .node_name = "ip4-not-enabled", |
Neale Ranns | 180279b | 2017-03-16 15:49:09 -0400 | [diff] [blame] | 813 | .runs_before = VNET_FEATURES ("ip4-mfib-forward-lookup"), |
| 814 | }; |
| 815 | |
| 816 | VNET_FEATURE_INIT (ip4_lookup_mc, static) = |
| 817 | { |
| 818 | .arc_name = "ip4-multicast", |
| 819 | .node_name = "ip4-mfib-forward-lookup", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 820 | .runs_before = 0, /* last feature */ |
Neale Ranns | 5e575b1 | 2016-10-03 09:40:25 +0100 | [diff] [blame] | 821 | }; |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 822 | |
| 823 | /* Source and port-range check ip4 tx feature path definition */ |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 824 | VNET_FEATURE_ARC_INIT (ip4_output, static) = |
| 825 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 826 | .arc_name = "ip4-output", |
Neale Ranns | f068c3e | 2018-01-03 04:18:48 -0800 | [diff] [blame] | 827 | .start_nodes = VNET_FEATURES ("ip4-rewrite", "ip4-midchain", "ip4-dvr-dpo"), |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 828 | .arc_index_ptr = &ip4_main.lookup_main.output_feature_arc_index, |
| 829 | }; |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 830 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 831 | VNET_FEATURE_INIT (ip4_source_and_port_range_check_tx, static) = |
| 832 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 833 | .arc_name = "ip4-output", |
| 834 | .node_name = "ip4-source-and-port-range-check-tx", |
Andrew Yourtchenko | 815d7d5 | 2018-02-07 11:37:02 +0100 | [diff] [blame] | 835 | .runs_before = VNET_FEATURES ("ip4-outacl"), |
| 836 | }; |
| 837 | |
| 838 | VNET_FEATURE_INIT (ip4_outacl, static) = |
| 839 | { |
| 840 | .arc_name = "ip4-output", |
| 841 | .node_name = "ip4-outacl", |
Klement Sekera | be5a5dd | 2018-10-09 16:05:48 +0200 | [diff] [blame] | 842 | .runs_before = VNET_FEATURES ("ipsec4-output"), |
Matus Fabian | 08a6f01 | 2016-11-15 06:08:51 -0800 | [diff] [blame] | 843 | }; |
| 844 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 845 | VNET_FEATURE_INIT (ip4_ipsec_output, static) = |
| 846 | { |
Matus Fabian | 08a6f01 | 2016-11-15 06:08:51 -0800 | [diff] [blame] | 847 | .arc_name = "ip4-output", |
Klement Sekera | be5a5dd | 2018-10-09 16:05:48 +0200 | [diff] [blame] | 848 | .node_name = "ipsec4-output", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 849 | .runs_before = VNET_FEATURES ("interface-output"), |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 850 | }; |
| 851 | |
| 852 | /* Built-in ip4 tx feature path definition */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 853 | VNET_FEATURE_INIT (ip4_interface_output, static) = |
| 854 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 855 | .arc_name = "ip4-output", |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 856 | .node_name = "interface-output", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 857 | .runs_before = 0, /* not before any other features */ |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 858 | }; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 859 | /* *INDENT-ON* */ |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 860 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 861 | static clib_error_t * |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 862 | ip4_sw_interface_add_del (vnet_main_t * vnm, u32 sw_if_index, u32 is_add) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 863 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 864 | ip4_main_t *im = &ip4_main; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 865 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 866 | /* Fill in lookup tables with default table (0). */ |
| 867 | vec_validate (im->fib_index_by_sw_if_index, sw_if_index); |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 868 | vec_validate (im->mfib_index_by_sw_if_index, sw_if_index); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 869 | |
Pavel Kotucek | 9f5a2b6 | 2017-06-14 13:56:55 +0200 | [diff] [blame] | 870 | if (!is_add) |
| 871 | { |
| 872 | ip4_main_t *im4 = &ip4_main; |
| 873 | ip_lookup_main_t *lm4 = &im4->lookup_main; |
| 874 | ip_interface_address_t *ia = 0; |
| 875 | ip4_address_t *address; |
| 876 | vlib_main_t *vm = vlib_get_main (); |
| 877 | |
Neale Ranns | 2ae2bc5 | 2018-03-16 03:22:39 -0700 | [diff] [blame] | 878 | vnet_sw_interface_update_unnumbered (sw_if_index, ~0, 0); |
Pavel Kotucek | 9f5a2b6 | 2017-06-14 13:56:55 +0200 | [diff] [blame] | 879 | /* *INDENT-OFF* */ |
Neale Ranns | 2ae2bc5 | 2018-03-16 03:22:39 -0700 | [diff] [blame] | 880 | foreach_ip_interface_address (lm4, ia, sw_if_index, 0, |
Pavel Kotucek | 9f5a2b6 | 2017-06-14 13:56:55 +0200 | [diff] [blame] | 881 | ({ |
| 882 | address = ip_interface_address_get_address (lm4, ia); |
| 883 | ip4_add_del_interface_address(vm, sw_if_index, address, ia->address_length, 1); |
| 884 | })); |
| 885 | /* *INDENT-ON* */ |
| 886 | } |
| 887 | |
Neale Ranns | 8269d3d | 2018-01-30 09:02:20 -0800 | [diff] [blame] | 888 | vnet_feature_enable_disable ("ip4-unicast", "ip4-not-enabled", sw_if_index, |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 889 | is_add, 0, 0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 890 | |
Neale Ranns | 8269d3d | 2018-01-30 09:02:20 -0800 | [diff] [blame] | 891 | vnet_feature_enable_disable ("ip4-multicast", "ip4-not-enabled", |
| 892 | sw_if_index, is_add, 0, 0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 893 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 894 | return /* no error */ 0; |
| 895 | } |
| 896 | |
| 897 | VNET_SW_INTERFACE_ADD_DEL_FUNCTION (ip4_sw_interface_add_del); |
| 898 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 899 | /* Global IP4 main. */ |
| 900 | ip4_main_t ip4_main; |
| 901 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 902 | static clib_error_t * |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 903 | ip4_lookup_init (vlib_main_t * vm) |
| 904 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 905 | ip4_main_t *im = &ip4_main; |
| 906 | clib_error_t *error; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 907 | uword i; |
| 908 | |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 909 | if ((error = vlib_call_init_function (vm, vnet_feature_init))) |
| 910 | return error; |
Neale Ranns | 1ec3652 | 2017-11-29 05:20:37 -0800 | [diff] [blame] | 911 | if ((error = vlib_call_init_function (vm, ip4_mtrie_module_init))) |
| 912 | return (error); |
| 913 | if ((error = vlib_call_init_function (vm, fib_module_init))) |
| 914 | return error; |
| 915 | if ((error = vlib_call_init_function (vm, mfib_module_init))) |
| 916 | return error; |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 917 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 918 | for (i = 0; i < ARRAY_LEN (im->fib_masks); i++) |
| 919 | { |
| 920 | u32 m; |
| 921 | |
| 922 | if (i < 32) |
| 923 | m = pow2_mask (i) << (32 - i); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 924 | else |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 925 | m = ~0; |
| 926 | im->fib_masks[i] = clib_host_to_net_u32 (m); |
| 927 | } |
| 928 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 929 | ip_lookup_init (&im->lookup_main, /* is_ip6 */ 0); |
| 930 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 931 | /* Create FIB with index 0 and table id of 0. */ |
Neale Ranns | 1500254 | 2017-09-10 04:39:11 -0700 | [diff] [blame] | 932 | fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, 0, |
| 933 | FIB_SOURCE_DEFAULT_ROUTE); |
| 934 | mfib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, 0, |
| 935 | MFIB_SOURCE_DEFAULT_ROUTE); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 936 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 937 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 938 | pg_node_t *pn; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 939 | pn = pg_get_node (ip4_lookup_node.index); |
| 940 | pn->unformat_edit = unformat_pg_ip4_header; |
| 941 | } |
| 942 | |
| 943 | { |
| 944 | ethernet_arp_header_t h; |
| 945 | |
Dave Barach | b7b9299 | 2018-10-17 10:38:51 -0400 | [diff] [blame] | 946 | clib_memset (&h, 0, sizeof (h)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 947 | |
| 948 | /* Set target ethernet address to all zeros. */ |
Dave Barach | b7b9299 | 2018-10-17 10:38:51 -0400 | [diff] [blame] | 949 | clib_memset (h.ip4_over_ethernet[1].ethernet, 0, |
| 950 | sizeof (h.ip4_over_ethernet[1].ethernet)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 951 | |
| 952 | #define _16(f,v) h.f = clib_host_to_net_u16 (v); |
| 953 | #define _8(f,v) h.f = v; |
| 954 | _16 (l2_type, ETHERNET_ARP_HARDWARE_TYPE_ethernet); |
| 955 | _16 (l3_type, ETHERNET_TYPE_IP4); |
| 956 | _8 (n_l2_address_bytes, 6); |
| 957 | _8 (n_l3_address_bytes, 4); |
| 958 | _16 (opcode, ETHERNET_ARP_OPCODE_request); |
| 959 | #undef _16 |
| 960 | #undef _8 |
| 961 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 962 | vlib_packet_template_init (vm, &im->ip4_arp_request_packet_template, |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 963 | /* data */ &h, |
| 964 | sizeof (h), |
| 965 | /* alloc chunk size */ 8, |
| 966 | "ip4 arp"); |
| 967 | } |
| 968 | |
Dave Barach | 203c632 | 2016-06-26 10:29:03 -0400 | [diff] [blame] | 969 | return error; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 970 | } |
| 971 | |
| 972 | VLIB_INIT_FUNCTION (ip4_lookup_init); |
| 973 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 974 | typedef struct |
| 975 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 976 | /* Adjacency taken. */ |
Vengada Govindan | f154448 | 2016-09-28 02:45:57 -0700 | [diff] [blame] | 977 | u32 dpo_index; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 978 | u32 flow_hash; |
| 979 | u32 fib_index; |
| 980 | |
| 981 | /* Packet data, possibly *after* rewrite. */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 982 | u8 packet_data[64 - 1 * sizeof (u32)]; |
| 983 | } |
| 984 | ip4_forward_next_trace_t; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 985 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 986 | #ifndef CLIB_MARCH_VARIANT |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 987 | u8 * |
| 988 | format_ip4_forward_next_trace (u8 * s, va_list * args) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 989 | { |
| 990 | CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); |
| 991 | CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 992 | ip4_forward_next_trace_t *t = va_arg (*args, ip4_forward_next_trace_t *); |
Christophe Fontaine | d3c008d | 2017-10-02 18:10:54 +0200 | [diff] [blame] | 993 | u32 indent = format_get_indent (s); |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 994 | s = format (s, "%U%U", |
John Lo | ac8146c | 2016-09-27 17:44:02 -0400 | [diff] [blame] | 995 | format_white_space, indent, |
| 996 | format_ip4_header, t->packet_data, sizeof (t->packet_data)); |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 997 | return s; |
| 998 | } |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 999 | #endif |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1000 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1001 | static u8 * |
| 1002 | format_ip4_lookup_trace (u8 * s, va_list * args) |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1003 | { |
| 1004 | CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); |
| 1005 | CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1006 | ip4_forward_next_trace_t *t = va_arg (*args, ip4_forward_next_trace_t *); |
Christophe Fontaine | d3c008d | 2017-10-02 18:10:54 +0200 | [diff] [blame] | 1007 | u32 indent = format_get_indent (s); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1008 | |
John Lo | ac8146c | 2016-09-27 17:44:02 -0400 | [diff] [blame] | 1009 | s = format (s, "fib %d dpo-idx %d flow hash: 0x%08x", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1010 | t->fib_index, t->dpo_index, t->flow_hash); |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1011 | s = format (s, "\n%U%U", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1012 | format_white_space, indent, |
| 1013 | format_ip4_header, t->packet_data, sizeof (t->packet_data)); |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1014 | return s; |
| 1015 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1016 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1017 | static u8 * |
| 1018 | format_ip4_rewrite_trace (u8 * s, va_list * args) |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1019 | { |
| 1020 | CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); |
| 1021 | CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1022 | ip4_forward_next_trace_t *t = va_arg (*args, ip4_forward_next_trace_t *); |
Christophe Fontaine | d3c008d | 2017-10-02 18:10:54 +0200 | [diff] [blame] | 1023 | u32 indent = format_get_indent (s); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1024 | |
Vengada Govindan | f154448 | 2016-09-28 02:45:57 -0700 | [diff] [blame] | 1025 | s = format (s, "tx_sw_if_index %d dpo-idx %d : %U flow hash: 0x%08x", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1026 | t->fib_index, t->dpo_index, format_ip_adjacency, |
| 1027 | t->dpo_index, FORMAT_IP_ADJACENCY_NONE, t->flow_hash); |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1028 | s = format (s, "\n%U%U", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1029 | format_white_space, indent, |
| 1030 | format_ip_adjacency_packet_data, |
Neale Ranns | b069a69 | 2017-03-15 12:34:25 -0400 | [diff] [blame] | 1031 | t->dpo_index, t->packet_data, sizeof (t->packet_data)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1032 | return s; |
| 1033 | } |
| 1034 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1035 | #ifndef CLIB_MARCH_VARIANT |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1036 | /* Common trace function for all ip4-forward next nodes. */ |
| 1037 | void |
| 1038 | ip4_forward_next_trace (vlib_main_t * vm, |
| 1039 | vlib_node_runtime_t * node, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1040 | vlib_frame_t * frame, vlib_rx_or_tx_t which_adj_index) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1041 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1042 | u32 *from, n_left; |
| 1043 | ip4_main_t *im = &ip4_main; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1044 | |
| 1045 | n_left = frame->n_vectors; |
| 1046 | from = vlib_frame_vector_args (frame); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 1047 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1048 | while (n_left >= 4) |
| 1049 | { |
| 1050 | u32 bi0, bi1; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1051 | vlib_buffer_t *b0, *b1; |
| 1052 | ip4_forward_next_trace_t *t0, *t1; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1053 | |
| 1054 | /* Prefetch next iteration. */ |
| 1055 | vlib_prefetch_buffer_with_index (vm, from[2], LOAD); |
| 1056 | vlib_prefetch_buffer_with_index (vm, from[3], LOAD); |
| 1057 | |
| 1058 | bi0 = from[0]; |
| 1059 | bi1 = from[1]; |
| 1060 | |
| 1061 | b0 = vlib_get_buffer (vm, bi0); |
| 1062 | b1 = vlib_get_buffer (vm, bi1); |
| 1063 | |
| 1064 | if (b0->flags & VLIB_BUFFER_IS_TRACED) |
| 1065 | { |
| 1066 | t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0])); |
Vengada Govindan | f154448 | 2016-09-28 02:45:57 -0700 | [diff] [blame] | 1067 | t0->dpo_index = vnet_buffer (b0)->ip.adj_index[which_adj_index]; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1068 | t0->flow_hash = vnet_buffer (b0)->ip.flow_hash; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1069 | t0->fib_index = |
| 1070 | (vnet_buffer (b0)->sw_if_index[VLIB_TX] != |
| 1071 | (u32) ~ 0) ? vnet_buffer (b0)->sw_if_index[VLIB_TX] : |
| 1072 | vec_elt (im->fib_index_by_sw_if_index, |
| 1073 | vnet_buffer (b0)->sw_if_index[VLIB_RX]); |
Pierre Pfister | 0febaf1 | 2016-06-08 12:23:21 +0100 | [diff] [blame] | 1074 | |
Damjan Marion | f1213b8 | 2016-03-13 02:22:06 +0100 | [diff] [blame] | 1075 | clib_memcpy (t0->packet_data, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1076 | vlib_buffer_get_current (b0), |
| 1077 | sizeof (t0->packet_data)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1078 | } |
| 1079 | if (b1->flags & VLIB_BUFFER_IS_TRACED) |
| 1080 | { |
| 1081 | t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0])); |
Vengada Govindan | f154448 | 2016-09-28 02:45:57 -0700 | [diff] [blame] | 1082 | t1->dpo_index = vnet_buffer (b1)->ip.adj_index[which_adj_index]; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1083 | t1->flow_hash = vnet_buffer (b1)->ip.flow_hash; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1084 | t1->fib_index = |
| 1085 | (vnet_buffer (b1)->sw_if_index[VLIB_TX] != |
| 1086 | (u32) ~ 0) ? vnet_buffer (b1)->sw_if_index[VLIB_TX] : |
| 1087 | vec_elt (im->fib_index_by_sw_if_index, |
| 1088 | vnet_buffer (b1)->sw_if_index[VLIB_RX]); |
| 1089 | clib_memcpy (t1->packet_data, vlib_buffer_get_current (b1), |
| 1090 | sizeof (t1->packet_data)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1091 | } |
| 1092 | from += 2; |
| 1093 | n_left -= 2; |
| 1094 | } |
| 1095 | |
| 1096 | while (n_left >= 1) |
| 1097 | { |
| 1098 | u32 bi0; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1099 | vlib_buffer_t *b0; |
| 1100 | ip4_forward_next_trace_t *t0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1101 | |
| 1102 | bi0 = from[0]; |
| 1103 | |
| 1104 | b0 = vlib_get_buffer (vm, bi0); |
| 1105 | |
| 1106 | if (b0->flags & VLIB_BUFFER_IS_TRACED) |
| 1107 | { |
| 1108 | t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0])); |
Vengada Govindan | f154448 | 2016-09-28 02:45:57 -0700 | [diff] [blame] | 1109 | t0->dpo_index = vnet_buffer (b0)->ip.adj_index[which_adj_index]; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1110 | t0->flow_hash = vnet_buffer (b0)->ip.flow_hash; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1111 | t0->fib_index = |
| 1112 | (vnet_buffer (b0)->sw_if_index[VLIB_TX] != |
| 1113 | (u32) ~ 0) ? vnet_buffer (b0)->sw_if_index[VLIB_TX] : |
| 1114 | vec_elt (im->fib_index_by_sw_if_index, |
| 1115 | vnet_buffer (b0)->sw_if_index[VLIB_RX]); |
| 1116 | clib_memcpy (t0->packet_data, vlib_buffer_get_current (b0), |
| 1117 | sizeof (t0->packet_data)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1118 | } |
| 1119 | from += 1; |
| 1120 | n_left -= 1; |
| 1121 | } |
| 1122 | } |
| 1123 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1124 | /* Compute TCP/UDP/ICMP4 checksum in software. */ |
| 1125 | u16 |
| 1126 | ip4_tcp_udp_compute_checksum (vlib_main_t * vm, vlib_buffer_t * p0, |
| 1127 | ip4_header_t * ip0) |
| 1128 | { |
| 1129 | ip_csum_t sum0; |
| 1130 | u32 ip_header_length, payload_length_host_byte_order; |
Florin Coras | b2215d6 | 2017-08-01 16:56:58 -0700 | [diff] [blame] | 1131 | u32 n_this_buffer, n_bytes_left, n_ip_bytes_this_buffer; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1132 | u16 sum16; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1133 | void *data_this_buffer; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 1134 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1135 | /* Initialize checksum with ip header. */ |
| 1136 | ip_header_length = ip4_header_bytes (ip0); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1137 | payload_length_host_byte_order = |
| 1138 | clib_net_to_host_u16 (ip0->length) - ip_header_length; |
| 1139 | sum0 = |
| 1140 | clib_host_to_net_u32 (payload_length_host_byte_order + |
| 1141 | (ip0->protocol << 16)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1142 | |
| 1143 | if (BITS (uword) == 32) |
| 1144 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1145 | sum0 = |
| 1146 | ip_csum_with_carry (sum0, |
| 1147 | clib_mem_unaligned (&ip0->src_address, u32)); |
| 1148 | sum0 = |
| 1149 | ip_csum_with_carry (sum0, |
| 1150 | clib_mem_unaligned (&ip0->dst_address, u32)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1151 | } |
| 1152 | else |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1153 | sum0 = |
| 1154 | ip_csum_with_carry (sum0, clib_mem_unaligned (&ip0->src_address, u64)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1155 | |
| 1156 | n_bytes_left = n_this_buffer = payload_length_host_byte_order; |
| 1157 | data_this_buffer = (void *) ip0 + ip_header_length; |
Neale Ranns | d91c1db | 2017-07-31 02:30:50 -0700 | [diff] [blame] | 1158 | n_ip_bytes_this_buffer = |
| 1159 | p0->current_length - (((u8 *) ip0 - p0->data) - p0->current_data); |
Florin Coras | b2215d6 | 2017-08-01 16:56:58 -0700 | [diff] [blame] | 1160 | if (n_this_buffer + ip_header_length > n_ip_bytes_this_buffer) |
| 1161 | { |
| 1162 | n_this_buffer = n_ip_bytes_this_buffer > ip_header_length ? |
Neale Ranns | d91c1db | 2017-07-31 02:30:50 -0700 | [diff] [blame] | 1163 | n_ip_bytes_this_buffer - ip_header_length : 0; |
Florin Coras | b2215d6 | 2017-08-01 16:56:58 -0700 | [diff] [blame] | 1164 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1165 | while (1) |
| 1166 | { |
| 1167 | sum0 = ip_incremental_checksum (sum0, data_this_buffer, n_this_buffer); |
| 1168 | n_bytes_left -= n_this_buffer; |
| 1169 | if (n_bytes_left == 0) |
| 1170 | break; |
| 1171 | |
| 1172 | ASSERT (p0->flags & VLIB_BUFFER_NEXT_PRESENT); |
| 1173 | p0 = vlib_get_buffer (vm, p0->next_buffer); |
| 1174 | data_this_buffer = vlib_buffer_get_current (p0); |
| 1175 | n_this_buffer = p0->current_length; |
| 1176 | } |
| 1177 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1178 | sum16 = ~ip_csum_fold (sum0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1179 | |
| 1180 | return sum16; |
| 1181 | } |
| 1182 | |
John Lo | 37682e1 | 2016-11-30 12:51:39 -0500 | [diff] [blame] | 1183 | u32 |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1184 | ip4_tcp_udp_validate_checksum (vlib_main_t * vm, vlib_buffer_t * p0) |
| 1185 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1186 | ip4_header_t *ip0 = vlib_buffer_get_current (p0); |
| 1187 | udp_header_t *udp0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1188 | u16 sum16; |
| 1189 | |
| 1190 | ASSERT (ip0->protocol == IP_PROTOCOL_TCP |
| 1191 | || ip0->protocol == IP_PROTOCOL_UDP); |
| 1192 | |
| 1193 | udp0 = (void *) (ip0 + 1); |
| 1194 | if (ip0->protocol == IP_PROTOCOL_UDP && udp0->checksum == 0) |
| 1195 | { |
Damjan Marion | 213b5aa | 2017-07-13 21:19:27 +0200 | [diff] [blame] | 1196 | p0->flags |= (VNET_BUFFER_F_L4_CHECKSUM_COMPUTED |
| 1197 | | VNET_BUFFER_F_L4_CHECKSUM_CORRECT); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1198 | return p0->flags; |
| 1199 | } |
| 1200 | |
| 1201 | sum16 = ip4_tcp_udp_compute_checksum (vm, p0, ip0); |
| 1202 | |
Damjan Marion | 213b5aa | 2017-07-13 21:19:27 +0200 | [diff] [blame] | 1203 | p0->flags |= (VNET_BUFFER_F_L4_CHECKSUM_COMPUTED |
| 1204 | | ((sum16 == 0) << VNET_BUFFER_F_LOG2_L4_CHECKSUM_CORRECT)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1205 | |
| 1206 | return p0->flags; |
| 1207 | } |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1208 | #endif |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1209 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1210 | /* *INDENT-OFF* */ |
| 1211 | VNET_FEATURE_ARC_INIT (ip4_local) = |
| 1212 | { |
| 1213 | .arc_name = "ip4-local", |
| 1214 | .start_nodes = VNET_FEATURES ("ip4-local"), |
| 1215 | }; |
| 1216 | /* *INDENT-ON* */ |
| 1217 | |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1218 | static inline void |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1219 | ip4_local_l4_csum_validate (vlib_main_t * vm, vlib_buffer_t * p, |
| 1220 | ip4_header_t * ip, u8 is_udp, u8 * error, |
| 1221 | u8 * good_tcp_udp) |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1222 | { |
| 1223 | u32 flags0; |
| 1224 | flags0 = ip4_tcp_udp_validate_checksum (vm, p); |
| 1225 | *good_tcp_udp = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0; |
| 1226 | if (is_udp) |
| 1227 | { |
| 1228 | udp_header_t *udp; |
| 1229 | u32 ip_len, udp_len; |
| 1230 | i32 len_diff; |
| 1231 | udp = ip4_next_header (ip); |
| 1232 | /* Verify UDP length. */ |
| 1233 | ip_len = clib_net_to_host_u16 (ip->length); |
| 1234 | udp_len = clib_net_to_host_u16 (udp->length); |
| 1235 | |
| 1236 | len_diff = ip_len - udp_len; |
| 1237 | *good_tcp_udp &= len_diff >= 0; |
| 1238 | *error = len_diff < 0 ? IP4_ERROR_UDP_LENGTH : *error; |
| 1239 | } |
| 1240 | } |
| 1241 | |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1242 | #define ip4_local_csum_is_offloaded(_b) \ |
| 1243 | _b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM \ |
| 1244 | || _b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM |
| 1245 | |
| 1246 | #define ip4_local_need_csum_check(is_tcp_udp, _b) \ |
| 1247 | (is_tcp_udp && !(_b->flags & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED \ |
| 1248 | || ip4_local_csum_is_offloaded (_b))) |
| 1249 | |
| 1250 | #define ip4_local_csum_is_valid(_b) \ |
| 1251 | (_b->flags & VNET_BUFFER_F_L4_CHECKSUM_CORRECT \ |
| 1252 | || (ip4_local_csum_is_offloaded (_b))) != 0 |
| 1253 | |
| 1254 | static inline void |
| 1255 | ip4_local_check_l4_csum (vlib_main_t * vm, vlib_buffer_t * b, |
| 1256 | ip4_header_t * ih, u8 * error) |
| 1257 | { |
| 1258 | u8 is_udp, is_tcp_udp, good_tcp_udp; |
| 1259 | |
| 1260 | is_udp = ih->protocol == IP_PROTOCOL_UDP; |
| 1261 | is_tcp_udp = is_udp || ih->protocol == IP_PROTOCOL_TCP; |
| 1262 | |
| 1263 | if (PREDICT_FALSE (ip4_local_need_csum_check (is_tcp_udp, b))) |
| 1264 | ip4_local_l4_csum_validate (vm, b, ih, is_udp, error, &good_tcp_udp); |
| 1265 | else |
| 1266 | good_tcp_udp = ip4_local_csum_is_valid (b); |
| 1267 | |
| 1268 | ASSERT (IP4_ERROR_TCP_CHECKSUM + 1 == IP4_ERROR_UDP_CHECKSUM); |
| 1269 | *error = (is_tcp_udp && !good_tcp_udp |
| 1270 | ? IP4_ERROR_TCP_CHECKSUM + is_udp : *error); |
| 1271 | } |
| 1272 | |
| 1273 | static inline void |
| 1274 | ip4_local_check_l4_csum_x2 (vlib_main_t * vm, vlib_buffer_t ** b, |
| 1275 | ip4_header_t ** ih, u8 * error) |
| 1276 | { |
| 1277 | u8 is_udp[2], is_tcp_udp[2], good_tcp_udp[2]; |
| 1278 | |
| 1279 | is_udp[0] = ih[0]->protocol == IP_PROTOCOL_UDP; |
| 1280 | is_udp[1] = ih[1]->protocol == IP_PROTOCOL_UDP; |
| 1281 | |
| 1282 | is_tcp_udp[0] = is_udp[0] || ih[0]->protocol == IP_PROTOCOL_TCP; |
| 1283 | is_tcp_udp[1] = is_udp[1] || ih[1]->protocol == IP_PROTOCOL_TCP; |
| 1284 | |
| 1285 | good_tcp_udp[0] = ip4_local_csum_is_valid (b[0]); |
| 1286 | good_tcp_udp[1] = ip4_local_csum_is_valid (b[1]); |
| 1287 | |
| 1288 | if (PREDICT_FALSE (ip4_local_need_csum_check (is_tcp_udp[0], b[0]) |
| 1289 | || ip4_local_need_csum_check (is_tcp_udp[1], b[1]))) |
| 1290 | { |
| 1291 | if (is_tcp_udp[0]) |
| 1292 | ip4_local_l4_csum_validate (vm, b[0], ih[0], is_udp[0], &error[0], |
| 1293 | &good_tcp_udp[0]); |
| 1294 | if (is_tcp_udp[1]) |
| 1295 | ip4_local_l4_csum_validate (vm, b[1], ih[1], is_udp[1], &error[1], |
| 1296 | &good_tcp_udp[1]); |
| 1297 | } |
| 1298 | |
| 1299 | error[0] = (is_tcp_udp[0] && !good_tcp_udp[0] ? |
| 1300 | IP4_ERROR_TCP_CHECKSUM + is_udp[0] : error[0]); |
| 1301 | error[1] = (is_tcp_udp[1] && !good_tcp_udp[1] ? |
| 1302 | IP4_ERROR_TCP_CHECKSUM + is_udp[1] : error[1]); |
| 1303 | } |
| 1304 | |
| 1305 | static inline void |
| 1306 | ip4_local_set_next_and_error (vlib_node_runtime_t * error_node, |
| 1307 | vlib_buffer_t * b, u16 * next, u8 error, |
| 1308 | u8 head_of_feature_arc) |
| 1309 | { |
| 1310 | u8 arc_index = vnet_feat_arc_ip4_local.feature_arc_index; |
| 1311 | u32 next_index; |
| 1312 | |
| 1313 | *next = error != IP4_ERROR_UNKNOWN_PROTOCOL ? IP_LOCAL_NEXT_DROP : *next; |
| 1314 | b->error = error ? error_node->errors[error] : 0; |
| 1315 | if (head_of_feature_arc) |
| 1316 | { |
| 1317 | next_index = *next; |
| 1318 | if (PREDICT_TRUE (error == (u8) IP4_ERROR_UNKNOWN_PROTOCOL)) |
| 1319 | { |
| 1320 | vnet_feature_arc_start (arc_index, |
| 1321 | vnet_buffer (b)->sw_if_index[VLIB_RX], |
| 1322 | &next_index, b); |
| 1323 | *next = next_index; |
| 1324 | } |
| 1325 | } |
| 1326 | } |
| 1327 | |
| 1328 | typedef struct |
| 1329 | { |
| 1330 | ip4_address_t src; |
| 1331 | u32 lbi; |
| 1332 | u8 error; |
| 1333 | } ip4_local_last_check_t; |
| 1334 | |
| 1335 | static inline void |
| 1336 | ip4_local_check_src (vlib_buffer_t * b, ip4_header_t * ip0, |
| 1337 | ip4_local_last_check_t * last_check, u8 * error0) |
| 1338 | { |
| 1339 | ip4_fib_mtrie_leaf_t leaf0; |
| 1340 | ip4_fib_mtrie_t *mtrie0; |
| 1341 | const dpo_id_t *dpo0; |
| 1342 | load_balance_t *lb0; |
| 1343 | u32 lbi0; |
| 1344 | |
| 1345 | vnet_buffer (b)->ip.fib_index = |
| 1346 | vnet_buffer (b)->sw_if_index[VLIB_TX] != ~0 ? |
| 1347 | vnet_buffer (b)->sw_if_index[VLIB_TX] : vnet_buffer (b)->ip.fib_index; |
| 1348 | |
| 1349 | if (PREDICT_FALSE (last_check->src.as_u32 != ip0->src_address.as_u32)) |
| 1350 | { |
| 1351 | mtrie0 = &ip4_fib_get (vnet_buffer (b)->ip.fib_index)->mtrie; |
| 1352 | leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, &ip0->src_address); |
| 1353 | leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, 2); |
| 1354 | leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, 3); |
| 1355 | lbi0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0); |
| 1356 | |
| 1357 | vnet_buffer (b)->ip.adj_index[VLIB_TX] = lbi0; |
| 1358 | vnet_buffer (b)->ip.adj_index[VLIB_RX] = lbi0; |
| 1359 | |
| 1360 | lb0 = load_balance_get (lbi0); |
| 1361 | dpo0 = load_balance_get_bucket_i (lb0, 0); |
| 1362 | |
| 1363 | /* |
| 1364 | * Must have a route to source otherwise we drop the packet. |
| 1365 | * ip4 broadcasts are accepted, e.g. to make dhcp client work |
| 1366 | * |
| 1367 | * The checks are: |
| 1368 | * - the source is a recieve => it's from us => bogus, do this |
| 1369 | * first since it sets a different error code. |
| 1370 | * - uRPF check for any route to source - accept if passes. |
| 1371 | * - allow packets destined to the broadcast address from unknown sources |
| 1372 | */ |
| 1373 | |
| 1374 | *error0 = ((*error0 == IP4_ERROR_UNKNOWN_PROTOCOL |
| 1375 | && dpo0->dpoi_type == DPO_RECEIVE) ? |
| 1376 | IP4_ERROR_SPOOFED_LOCAL_PACKETS : *error0); |
| 1377 | *error0 = ((*error0 == IP4_ERROR_UNKNOWN_PROTOCOL |
| 1378 | && !fib_urpf_check_size (lb0->lb_urpf) |
| 1379 | && ip0->dst_address.as_u32 != 0xFFFFFFFF) ? |
| 1380 | IP4_ERROR_SRC_LOOKUP_MISS : *error0); |
| 1381 | |
| 1382 | last_check->src.as_u32 = ip0->src_address.as_u32; |
| 1383 | last_check->lbi = lbi0; |
| 1384 | last_check->error = *error0; |
| 1385 | } |
| 1386 | else |
| 1387 | { |
| 1388 | vnet_buffer (b)->ip.adj_index[VLIB_TX] = last_check->lbi; |
| 1389 | vnet_buffer (b)->ip.adj_index[VLIB_RX] = last_check->lbi; |
| 1390 | *error0 = last_check->error; |
| 1391 | } |
| 1392 | } |
| 1393 | |
| 1394 | static inline void |
| 1395 | ip4_local_check_src_x2 (vlib_buffer_t ** b, ip4_header_t ** ip, |
| 1396 | ip4_local_last_check_t * last_check, u8 * error) |
| 1397 | { |
| 1398 | ip4_fib_mtrie_leaf_t leaf[2]; |
| 1399 | ip4_fib_mtrie_t *mtrie[2]; |
| 1400 | const dpo_id_t *dpo[2]; |
| 1401 | load_balance_t *lb[2]; |
| 1402 | u32 not_last_hit = 0; |
| 1403 | u32 lbi[2]; |
| 1404 | |
| 1405 | not_last_hit |= ip[0]->src_address.as_u32 ^ last_check->src.as_u32; |
| 1406 | not_last_hit |= ip[1]->src_address.as_u32 ^ last_check->src.as_u32; |
| 1407 | |
| 1408 | vnet_buffer (b[0])->ip.fib_index = |
| 1409 | vnet_buffer (b[0])->sw_if_index[VLIB_TX] != ~0 ? |
| 1410 | vnet_buffer (b[0])->sw_if_index[VLIB_TX] : |
| 1411 | vnet_buffer (b[0])->ip.fib_index; |
| 1412 | |
| 1413 | vnet_buffer (b[1])->ip.fib_index = |
| 1414 | vnet_buffer (b[1])->sw_if_index[VLIB_TX] != ~0 ? |
| 1415 | vnet_buffer (b[1])->sw_if_index[VLIB_TX] : |
| 1416 | vnet_buffer (b[1])->ip.fib_index; |
| 1417 | |
| 1418 | if (PREDICT_FALSE (not_last_hit)) |
| 1419 | { |
| 1420 | mtrie[0] = &ip4_fib_get (vnet_buffer (b[0])->ip.fib_index)->mtrie; |
| 1421 | mtrie[1] = &ip4_fib_get (vnet_buffer (b[1])->ip.fib_index)->mtrie; |
| 1422 | |
| 1423 | leaf[0] = ip4_fib_mtrie_lookup_step_one (mtrie[0], &ip[0]->src_address); |
| 1424 | leaf[1] = ip4_fib_mtrie_lookup_step_one (mtrie[1], &ip[1]->src_address); |
| 1425 | |
| 1426 | leaf[0] = ip4_fib_mtrie_lookup_step (mtrie[0], leaf[0], |
| 1427 | &ip[0]->src_address, 2); |
| 1428 | leaf[1] = ip4_fib_mtrie_lookup_step (mtrie[1], leaf[1], |
| 1429 | &ip[1]->src_address, 2); |
| 1430 | |
| 1431 | leaf[0] = ip4_fib_mtrie_lookup_step (mtrie[0], leaf[0], |
| 1432 | &ip[0]->src_address, 3); |
| 1433 | leaf[1] = ip4_fib_mtrie_lookup_step (mtrie[1], leaf[1], |
| 1434 | &ip[1]->src_address, 3); |
| 1435 | |
| 1436 | lbi[0] = ip4_fib_mtrie_leaf_get_adj_index (leaf[0]); |
| 1437 | lbi[1] = ip4_fib_mtrie_leaf_get_adj_index (leaf[1]); |
| 1438 | |
| 1439 | vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = lbi[0]; |
| 1440 | vnet_buffer (b[0])->ip.adj_index[VLIB_RX] = lbi[0]; |
| 1441 | |
| 1442 | vnet_buffer (b[1])->ip.adj_index[VLIB_TX] = lbi[1]; |
| 1443 | vnet_buffer (b[1])->ip.adj_index[VLIB_RX] = lbi[1]; |
| 1444 | |
| 1445 | lb[0] = load_balance_get (lbi[0]); |
| 1446 | lb[1] = load_balance_get (lbi[1]); |
| 1447 | |
| 1448 | dpo[0] = load_balance_get_bucket_i (lb[0], 0); |
| 1449 | dpo[1] = load_balance_get_bucket_i (lb[1], 0); |
| 1450 | |
| 1451 | error[0] = ((error[0] == IP4_ERROR_UNKNOWN_PROTOCOL && |
| 1452 | dpo[0]->dpoi_type == DPO_RECEIVE) ? |
| 1453 | IP4_ERROR_SPOOFED_LOCAL_PACKETS : error[0]); |
| 1454 | error[0] = ((error[0] == IP4_ERROR_UNKNOWN_PROTOCOL && |
| 1455 | !fib_urpf_check_size (lb[0]->lb_urpf) && |
| 1456 | ip[0]->dst_address.as_u32 != 0xFFFFFFFF) |
| 1457 | ? IP4_ERROR_SRC_LOOKUP_MISS : error[0]); |
| 1458 | |
| 1459 | error[1] = ((error[1] == IP4_ERROR_UNKNOWN_PROTOCOL && |
| 1460 | dpo[1]->dpoi_type == DPO_RECEIVE) ? |
| 1461 | IP4_ERROR_SPOOFED_LOCAL_PACKETS : error[1]); |
| 1462 | error[1] = ((error[1] == IP4_ERROR_UNKNOWN_PROTOCOL && |
| 1463 | !fib_urpf_check_size (lb[1]->lb_urpf) && |
| 1464 | ip[1]->dst_address.as_u32 != 0xFFFFFFFF) |
| 1465 | ? IP4_ERROR_SRC_LOOKUP_MISS : error[1]); |
| 1466 | |
| 1467 | last_check->src.as_u32 = ip[1]->src_address.as_u32; |
| 1468 | last_check->lbi = lbi[1]; |
| 1469 | last_check->error = error[1]; |
| 1470 | } |
| 1471 | else |
| 1472 | { |
| 1473 | vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = last_check->lbi; |
| 1474 | vnet_buffer (b[0])->ip.adj_index[VLIB_RX] = last_check->lbi; |
| 1475 | |
| 1476 | vnet_buffer (b[1])->ip.adj_index[VLIB_TX] = last_check->lbi; |
| 1477 | vnet_buffer (b[1])->ip.adj_index[VLIB_RX] = last_check->lbi; |
| 1478 | |
| 1479 | error[0] = last_check->error; |
| 1480 | error[1] = last_check->error; |
| 1481 | } |
| 1482 | } |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1483 | |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1484 | enum ip_local_packet_type_e |
| 1485 | { |
| 1486 | IP_LOCAL_PACKET_TYPE_L4, |
| 1487 | IP_LOCAL_PACKET_TYPE_NAT, |
Juraj Sloboda | 3048b63 | 2018-10-02 11:13:53 +0200 | [diff] [blame] | 1488 | IP_LOCAL_PACKET_TYPE_FRAG, |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1489 | }; |
| 1490 | |
| 1491 | /** |
| 1492 | * Determine packet type and next node. |
| 1493 | * |
| 1494 | * The expectation is that all packets that are not L4 will skip |
| 1495 | * checksums and source checks. |
| 1496 | */ |
| 1497 | always_inline u8 |
| 1498 | ip4_local_classify (vlib_buffer_t * b, ip4_header_t * ip, u16 * next) |
| 1499 | { |
| 1500 | ip_lookup_main_t *lm = &ip4_main.lookup_main; |
| 1501 | |
Juraj Sloboda | 3048b63 | 2018-10-02 11:13:53 +0200 | [diff] [blame] | 1502 | if (PREDICT_FALSE (ip4_is_fragment (ip))) |
| 1503 | { |
| 1504 | *next = IP_LOCAL_NEXT_REASSEMBLY; |
| 1505 | return IP_LOCAL_PACKET_TYPE_FRAG; |
| 1506 | } |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1507 | if (PREDICT_FALSE (b->flags & VNET_BUFFER_F_IS_NATED)) |
| 1508 | { |
| 1509 | *next = lm->local_next_by_ip_protocol[ip->protocol]; |
| 1510 | return IP_LOCAL_PACKET_TYPE_NAT; |
| 1511 | } |
| 1512 | |
| 1513 | *next = lm->local_next_by_ip_protocol[ip->protocol]; |
| 1514 | return IP_LOCAL_PACKET_TYPE_L4; |
| 1515 | } |
| 1516 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1517 | static inline uword |
| 1518 | ip4_local_inline (vlib_main_t * vm, |
| 1519 | vlib_node_runtime_t * node, |
| 1520 | vlib_frame_t * frame, int head_of_feature_arc) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1521 | { |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1522 | u32 *from, n_left_from; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1523 | vlib_node_runtime_t *error_node = |
| 1524 | vlib_node_get_runtime (vm, ip4_input_node.index); |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1525 | u16 nexts[VLIB_FRAME_SIZE], *next; |
| 1526 | vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b; |
| 1527 | ip4_header_t *ip[2]; |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1528 | u8 error[2], pt[2]; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1529 | |
| 1530 | ip4_local_last_check_t last_check = { |
| 1531 | .src = {.as_u32 = 0}, |
| 1532 | .lbi = ~0, |
| 1533 | .error = IP4_ERROR_UNKNOWN_PROTOCOL |
| 1534 | }; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1535 | |
| 1536 | from = vlib_frame_vector_args (frame); |
| 1537 | n_left_from = frame->n_vectors; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 1538 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1539 | if (node->flags & VLIB_NODE_FLAG_TRACE) |
| 1540 | ip4_forward_next_trace (vm, node, frame, VLIB_TX); |
| 1541 | |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1542 | vlib_get_buffers (vm, from, bufs, n_left_from); |
| 1543 | b = bufs; |
| 1544 | next = nexts; |
| 1545 | |
| 1546 | while (n_left_from >= 6) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1547 | { |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1548 | u8 not_batch = 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1549 | |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1550 | /* Prefetch next iteration. */ |
| 1551 | { |
| 1552 | vlib_prefetch_buffer_header (b[4], LOAD); |
| 1553 | vlib_prefetch_buffer_header (b[5], LOAD); |
| 1554 | |
| 1555 | CLIB_PREFETCH (b[4]->data, CLIB_CACHE_LINE_BYTES, LOAD); |
| 1556 | CLIB_PREFETCH (b[5]->data, CLIB_CACHE_LINE_BYTES, LOAD); |
| 1557 | } |
| 1558 | |
| 1559 | error[0] = error[1] = IP4_ERROR_UNKNOWN_PROTOCOL; |
| 1560 | |
| 1561 | ip[0] = vlib_buffer_get_current (b[0]); |
| 1562 | ip[1] = vlib_buffer_get_current (b[1]); |
| 1563 | |
| 1564 | vnet_buffer (b[0])->l3_hdr_offset = b[0]->current_data; |
| 1565 | vnet_buffer (b[1])->l3_hdr_offset = b[1]->current_data; |
| 1566 | |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1567 | pt[0] = ip4_local_classify (b[0], ip[0], &next[0]); |
| 1568 | pt[1] = ip4_local_classify (b[1], ip[1], &next[1]); |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1569 | |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1570 | not_batch = pt[0] ^ pt[1]; |
| 1571 | |
| 1572 | if (head_of_feature_arc == 0 || (pt[0] && not_batch == 0)) |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1573 | goto skip_checks; |
| 1574 | |
| 1575 | if (PREDICT_TRUE (not_batch == 0)) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1576 | { |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1577 | ip4_local_check_l4_csum_x2 (vm, b, ip, error); |
| 1578 | ip4_local_check_src_x2 (b, ip, &last_check, error); |
| 1579 | } |
| 1580 | else |
| 1581 | { |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1582 | if (!pt[0]) |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1583 | { |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1584 | ip4_local_check_l4_csum (vm, b[0], ip[0], &error[0]); |
| 1585 | ip4_local_check_src (b[0], ip[0], &last_check, &error[0]); |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1586 | } |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1587 | if (!pt[1]) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1588 | { |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1589 | ip4_local_check_l4_csum (vm, b[1], ip[1], &error[1]); |
| 1590 | ip4_local_check_src (b[1], ip[1], &last_check, &error[1]); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1591 | } |
| 1592 | } |
| 1593 | |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1594 | skip_checks: |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1595 | |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1596 | ip4_local_set_next_and_error (error_node, b[0], &next[0], error[0], |
| 1597 | head_of_feature_arc); |
| 1598 | ip4_local_set_next_and_error (error_node, b[1], &next[1], error[1], |
| 1599 | head_of_feature_arc); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 1600 | |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1601 | b += 2; |
| 1602 | next += 2; |
| 1603 | n_left_from -= 2; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1604 | } |
| 1605 | |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1606 | while (n_left_from > 0) |
| 1607 | { |
| 1608 | error[0] = IP4_ERROR_UNKNOWN_PROTOCOL; |
| 1609 | |
| 1610 | ip[0] = vlib_buffer_get_current (b[0]); |
| 1611 | vnet_buffer (b[0])->l3_hdr_offset = b[0]->current_data; |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1612 | pt[0] = ip4_local_classify (b[0], ip[0], &next[0]); |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1613 | |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1614 | if (head_of_feature_arc == 0 || pt[0]) |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1615 | goto skip_check; |
| 1616 | |
| 1617 | ip4_local_check_l4_csum (vm, b[0], ip[0], &error[0]); |
| 1618 | ip4_local_check_src (b[0], ip[0], &last_check, &error[0]); |
| 1619 | |
| 1620 | skip_check: |
| 1621 | |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1622 | ip4_local_set_next_and_error (error_node, b[0], &next[0], error[0], |
| 1623 | head_of_feature_arc); |
| 1624 | |
| 1625 | b += 1; |
| 1626 | next += 1; |
| 1627 | n_left_from -= 1; |
| 1628 | } |
| 1629 | |
| 1630 | vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1631 | return frame->n_vectors; |
| 1632 | } |
| 1633 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1634 | VLIB_NODE_FN (ip4_local_node) (vlib_main_t * vm, vlib_node_runtime_t * node, |
| 1635 | vlib_frame_t * frame) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1636 | { |
| 1637 | return ip4_local_inline (vm, node, frame, 1 /* head of feature arc */ ); |
| 1638 | } |
| 1639 | |
| 1640 | /* *INDENT-OFF* */ |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 1641 | VLIB_REGISTER_NODE (ip4_local_node) = |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1642 | { |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1643 | .name = "ip4-local", |
| 1644 | .vector_size = sizeof (u32), |
| 1645 | .format_trace = format_ip4_forward_next_trace, |
| 1646 | .n_next_nodes = IP_LOCAL_N_NEXT, |
| 1647 | .next_nodes = |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1648 | { |
Neale Ranns | d91c1db | 2017-07-31 02:30:50 -0700 | [diff] [blame] | 1649 | [IP_LOCAL_NEXT_DROP] = "ip4-drop", |
| 1650 | [IP_LOCAL_NEXT_PUNT] = "ip4-punt", |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1651 | [IP_LOCAL_NEXT_UDP_LOOKUP] = "ip4-udp-lookup", |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1652 | [IP_LOCAL_NEXT_ICMP] = "ip4-icmp-input", |
Juraj Sloboda | 3048b63 | 2018-10-02 11:13:53 +0200 | [diff] [blame] | 1653 | [IP_LOCAL_NEXT_REASSEMBLY] = "ip4-reassembly", |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1654 | }, |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1655 | }; |
| 1656 | /* *INDENT-ON* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1657 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1658 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1659 | VLIB_NODE_FN (ip4_local_end_of_arc_node) (vlib_main_t * vm, |
| 1660 | vlib_node_runtime_t * node, |
| 1661 | vlib_frame_t * frame) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1662 | { |
| 1663 | return ip4_local_inline (vm, node, frame, 0 /* head of feature arc */ ); |
| 1664 | } |
| 1665 | |
| 1666 | /* *INDENT-OFF* */ |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1667 | VLIB_REGISTER_NODE (ip4_local_end_of_arc_node) = { |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1668 | .name = "ip4-local-end-of-arc", |
| 1669 | .vector_size = sizeof (u32), |
| 1670 | |
| 1671 | .format_trace = format_ip4_forward_next_trace, |
| 1672 | .sibling_of = "ip4-local", |
| 1673 | }; |
| 1674 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1675 | VNET_FEATURE_INIT (ip4_local_end_of_arc, static) = { |
| 1676 | .arc_name = "ip4-local", |
| 1677 | .node_name = "ip4-local-end-of-arc", |
| 1678 | .runs_before = 0, /* not before any other features */ |
| 1679 | }; |
| 1680 | /* *INDENT-ON* */ |
| 1681 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1682 | #ifndef CLIB_MARCH_VARIANT |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1683 | void |
| 1684 | ip4_register_protocol (u32 protocol, u32 node_index) |
| 1685 | { |
| 1686 | vlib_main_t *vm = vlib_get_main (); |
| 1687 | ip4_main_t *im = &ip4_main; |
| 1688 | ip_lookup_main_t *lm = &im->lookup_main; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1689 | |
| 1690 | ASSERT (protocol < ARRAY_LEN (lm->local_next_by_ip_protocol)); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1691 | lm->local_next_by_ip_protocol[protocol] = |
| 1692 | vlib_node_add_next (vm, ip4_local_node.index, node_index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1693 | } |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1694 | #endif |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1695 | |
| 1696 | static clib_error_t * |
| 1697 | show_ip_local_command_fn (vlib_main_t * vm, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1698 | unformat_input_t * input, vlib_cli_command_t * cmd) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1699 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1700 | ip4_main_t *im = &ip4_main; |
| 1701 | ip_lookup_main_t *lm = &im->lookup_main; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1702 | int i; |
| 1703 | |
| 1704 | vlib_cli_output (vm, "Protocols handled by ip4_local"); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1705 | for (i = 0; i < ARRAY_LEN (lm->local_next_by_ip_protocol); i++) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1706 | { |
| 1707 | if (lm->local_next_by_ip_protocol[i] != IP_LOCAL_NEXT_PUNT) |
Pierre Pfister | 1bfd372 | 2017-09-18 11:40:32 +0200 | [diff] [blame] | 1708 | { |
| 1709 | u32 node_index = vlib_get_node (vm, |
| 1710 | ip4_local_node.index)-> |
| 1711 | next_nodes[lm->local_next_by_ip_protocol[i]]; |
| 1712 | vlib_cli_output (vm, "%d: %U", i, format_vlib_node_name, vm, |
| 1713 | node_index); |
| 1714 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1715 | } |
| 1716 | return 0; |
| 1717 | } |
| 1718 | |
| 1719 | |
| 1720 | |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 1721 | /*? |
| 1722 | * Display the set of protocols handled by the local IPv4 stack. |
| 1723 | * |
| 1724 | * @cliexpar |
| 1725 | * Example of how to display local protocol table: |
| 1726 | * @cliexstart{show ip local} |
| 1727 | * Protocols handled by ip4_local |
| 1728 | * 1 |
| 1729 | * 17 |
| 1730 | * 47 |
| 1731 | * @cliexend |
| 1732 | ?*/ |
| 1733 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1734 | VLIB_CLI_COMMAND (show_ip_local, static) = |
| 1735 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1736 | .path = "show ip local", |
| 1737 | .function = show_ip_local_command_fn, |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 1738 | .short_help = "show ip local", |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1739 | }; |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 1740 | /* *INDENT-ON* */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1741 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1742 | always_inline uword |
| 1743 | ip4_arp_inline (vlib_main_t * vm, |
| 1744 | vlib_node_runtime_t * node, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1745 | vlib_frame_t * frame, int is_glean) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1746 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1747 | vnet_main_t *vnm = vnet_get_main (); |
| 1748 | ip4_main_t *im = &ip4_main; |
| 1749 | ip_lookup_main_t *lm = &im->lookup_main; |
| 1750 | u32 *from, *to_next_drop; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1751 | uword n_left_from, n_left_to_next_drop, next_index; |
Dave Barach | 49433ad | 2018-08-08 17:59:03 -0400 | [diff] [blame] | 1752 | u32 thread_index = vm->thread_index; |
Neale Ranns | cd35e53 | 2018-08-31 02:51:45 -0700 | [diff] [blame] | 1753 | u64 seed; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1754 | |
| 1755 | if (node->flags & VLIB_NODE_FLAG_TRACE) |
| 1756 | ip4_forward_next_trace (vm, node, frame, VLIB_TX); |
| 1757 | |
Neale Ranns | c8352bc | 2018-08-29 10:23:58 -0700 | [diff] [blame] | 1758 | seed = throttle_seed (&im->arp_throttle, thread_index, vlib_time_now (vm)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1759 | |
| 1760 | from = vlib_frame_vector_args (frame); |
| 1761 | n_left_from = frame->n_vectors; |
| 1762 | next_index = node->cached_next_index; |
| 1763 | if (next_index == IP4_ARP_NEXT_DROP) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1764 | next_index = IP4_ARP_N_NEXT; /* point to first interface */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1765 | |
| 1766 | while (n_left_from > 0) |
| 1767 | { |
| 1768 | vlib_get_next_frame (vm, node, IP4_ARP_NEXT_DROP, |
| 1769 | to_next_drop, n_left_to_next_drop); |
| 1770 | |
| 1771 | while (n_left_from > 0 && n_left_to_next_drop > 0) |
| 1772 | { |
Neale Ranns | cd35e53 | 2018-08-31 02:51:45 -0700 | [diff] [blame] | 1773 | u32 pi0, adj_index0, sw_if_index0, drop0; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1774 | ip_adjacency_t *adj0; |
| 1775 | vlib_buffer_t *p0; |
| 1776 | ip4_header_t *ip0; |
Neale Ranns | cd35e53 | 2018-08-31 02:51:45 -0700 | [diff] [blame] | 1777 | u64 r0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1778 | |
| 1779 | pi0 = from[0]; |
| 1780 | |
| 1781 | p0 = vlib_get_buffer (vm, pi0); |
| 1782 | |
| 1783 | adj_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX]; |
Neale Ranns | 107e7d4 | 2017-04-11 09:55:19 -0700 | [diff] [blame] | 1784 | adj0 = adj_get (adj_index0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1785 | ip0 = vlib_buffer_get_current (p0); |
| 1786 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1787 | sw_if_index0 = adj0->rewrite_header.sw_if_index; |
| 1788 | vnet_buffer (p0)->sw_if_index[VLIB_TX] = sw_if_index0; |
| 1789 | |
Dave Barach | 49433ad | 2018-08-08 17:59:03 -0400 | [diff] [blame] | 1790 | if (PREDICT_TRUE (is_glean)) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1791 | { |
Neale Ranns | 948e00f | 2016-10-20 13:39:34 +0100 | [diff] [blame] | 1792 | /* |
| 1793 | * this is the Glean case, so we are ARPing for the |
| 1794 | * packet's destination |
| 1795 | */ |
Dave Barach | 49433ad | 2018-08-08 17:59:03 -0400 | [diff] [blame] | 1796 | r0 = ip0->dst_address.data_u32; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1797 | } |
| 1798 | else |
| 1799 | { |
Dave Barach | 49433ad | 2018-08-08 17:59:03 -0400 | [diff] [blame] | 1800 | r0 = adj0->sub_type.nbr.next_hop.ip4.data_u32; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1801 | } |
Neale Ranns | cd35e53 | 2018-08-31 02:51:45 -0700 | [diff] [blame] | 1802 | /* combine the address and interface for the hash key */ |
| 1803 | r0 = r0 << 32; |
| 1804 | r0 |= sw_if_index0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1805 | |
Neale Ranns | c8352bc | 2018-08-29 10:23:58 -0700 | [diff] [blame] | 1806 | drop0 = throttle_check (&im->arp_throttle, thread_index, r0, seed); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1807 | |
| 1808 | from += 1; |
| 1809 | n_left_from -= 1; |
| 1810 | to_next_drop[0] = pi0; |
| 1811 | to_next_drop += 1; |
| 1812 | n_left_to_next_drop -= 1; |
| 1813 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1814 | p0->error = |
| 1815 | node->errors[drop0 ? IP4_ARP_ERROR_DROP : |
| 1816 | IP4_ARP_ERROR_REQUEST_SENT]; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1817 | |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 1818 | /* |
| 1819 | * the adj has been updated to a rewrite but the node the DPO that got |
| 1820 | * us here hasn't - yet. no big deal. we'll drop while we wait. |
| 1821 | */ |
| 1822 | if (IP_LOOKUP_NEXT_REWRITE == adj0->lookup_next_index) |
| 1823 | continue; |
| 1824 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1825 | if (drop0) |
| 1826 | continue; |
| 1827 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1828 | /* |
| 1829 | * Can happen if the control-plane is programming tables |
| 1830 | * with traffic flowing; at least that's today's lame excuse. |
| 1831 | */ |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 1832 | if ((is_glean && adj0->lookup_next_index != IP_LOOKUP_NEXT_GLEAN) |
| 1833 | || (!is_glean && adj0->lookup_next_index != IP_LOOKUP_NEXT_ARP)) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1834 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1835 | p0->error = node->errors[IP4_ARP_ERROR_NON_ARP_ADJ]; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1836 | } |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1837 | else |
| 1838 | /* Send ARP request. */ |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1839 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1840 | u32 bi0 = 0; |
| 1841 | vlib_buffer_t *b0; |
| 1842 | ethernet_arp_header_t *h0; |
| 1843 | vnet_hw_interface_t *hw_if0; |
| 1844 | |
| 1845 | h0 = |
| 1846 | vlib_packet_template_get_packet (vm, |
| 1847 | &im->ip4_arp_request_packet_template, |
| 1848 | &bi0); |
| 1849 | |
Florin Coras | d172a62 | 2017-10-14 11:02:37 -0700 | [diff] [blame] | 1850 | /* Seems we're out of buffers */ |
| 1851 | if (PREDICT_FALSE (!h0)) |
| 1852 | continue; |
| 1853 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1854 | /* Add rewrite/encap string for ARP packet. */ |
| 1855 | vnet_rewrite_one_header (adj0[0], h0, |
| 1856 | sizeof (ethernet_header_t)); |
| 1857 | |
| 1858 | hw_if0 = vnet_get_sup_hw_interface (vnm, sw_if_index0); |
| 1859 | |
| 1860 | /* Src ethernet address in ARP header. */ |
| 1861 | clib_memcpy (h0->ip4_over_ethernet[0].ethernet, |
| 1862 | hw_if0->hw_address, |
| 1863 | sizeof (h0->ip4_over_ethernet[0].ethernet)); |
| 1864 | |
| 1865 | if (is_glean) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1866 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1867 | /* The interface's source address is stashed in the Glean Adj */ |
| 1868 | h0->ip4_over_ethernet[0].ip4 = |
| 1869 | adj0->sub_type.glean.receive_addr.ip4; |
| 1870 | |
| 1871 | /* Copy in destination address we are requesting. This is the |
| 1872 | * glean case, so it's the packet's destination.*/ |
| 1873 | h0->ip4_over_ethernet[1].ip4.data_u32 = |
| 1874 | ip0->dst_address.data_u32; |
| 1875 | } |
| 1876 | else |
| 1877 | { |
| 1878 | /* Src IP address in ARP header. */ |
| 1879 | if (ip4_src_address_for_packet (lm, sw_if_index0, |
| 1880 | &h0-> |
| 1881 | ip4_over_ethernet[0].ip4)) |
| 1882 | { |
| 1883 | /* No source address available */ |
| 1884 | p0->error = |
| 1885 | node->errors[IP4_ARP_ERROR_NO_SOURCE_ADDRESS]; |
| 1886 | vlib_buffer_free (vm, &bi0, 1); |
| 1887 | continue; |
| 1888 | } |
| 1889 | |
| 1890 | /* Copy in destination address we are requesting from the |
| 1891 | incomplete adj */ |
| 1892 | h0->ip4_over_ethernet[1].ip4.data_u32 = |
| 1893 | adj0->sub_type.nbr.next_hop.ip4.as_u32; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1894 | } |
| 1895 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1896 | vlib_buffer_copy_trace_flag (vm, p0, bi0); |
| 1897 | b0 = vlib_get_buffer (vm, bi0); |
Florin Coras | 2f9b0c0 | 2017-09-11 20:54:15 -0400 | [diff] [blame] | 1898 | VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1899 | vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0; |
| 1900 | |
| 1901 | vlib_buffer_advance (b0, -adj0->rewrite_header.data_bytes); |
| 1902 | |
| 1903 | vlib_set_next_frame_buffer (vm, node, |
| 1904 | adj0->rewrite_header.next_index, |
| 1905 | bi0); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1906 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1907 | } |
| 1908 | |
| 1909 | vlib_put_next_frame (vm, node, IP4_ARP_NEXT_DROP, n_left_to_next_drop); |
| 1910 | } |
| 1911 | |
| 1912 | return frame->n_vectors; |
| 1913 | } |
| 1914 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1915 | VLIB_NODE_FN (ip4_arp_node) (vlib_main_t * vm, vlib_node_runtime_t * node, |
| 1916 | vlib_frame_t * frame) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1917 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1918 | return (ip4_arp_inline (vm, node, frame, 0)); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1919 | } |
| 1920 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1921 | VLIB_NODE_FN (ip4_glean_node) (vlib_main_t * vm, vlib_node_runtime_t * node, |
| 1922 | vlib_frame_t * frame) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1923 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1924 | return (ip4_arp_inline (vm, node, frame, 1)); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1925 | } |
| 1926 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1927 | static char *ip4_arp_error_strings[] = { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1928 | [IP4_ARP_ERROR_DROP] = "address overflow drops", |
| 1929 | [IP4_ARP_ERROR_REQUEST_SENT] = "ARP requests sent", |
| 1930 | [IP4_ARP_ERROR_NON_ARP_ADJ] = "ARPs to non-ARP adjacencies", |
| 1931 | [IP4_ARP_ERROR_REPLICATE_DROP] = "ARP replication completed", |
| 1932 | [IP4_ARP_ERROR_REPLICATE_FAIL] = "ARP replication failed", |
Pierre Pfister | d076f19 | 2016-06-22 12:58:30 +0100 | [diff] [blame] | 1933 | [IP4_ARP_ERROR_NO_SOURCE_ADDRESS] = "no source address for ARP request", |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1934 | }; |
| 1935 | |
Neale Ranns | f868632 | 2017-11-29 02:39:53 -0800 | [diff] [blame] | 1936 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1937 | VLIB_REGISTER_NODE (ip4_arp_node) = |
| 1938 | { |
Neale Ranns | f868632 | 2017-11-29 02:39:53 -0800 | [diff] [blame] | 1939 | .name = "ip4-arp", |
| 1940 | .vector_size = sizeof (u32), |
| 1941 | .format_trace = format_ip4_forward_next_trace, |
| 1942 | .n_errors = ARRAY_LEN (ip4_arp_error_strings), |
| 1943 | .error_strings = ip4_arp_error_strings, |
| 1944 | .n_next_nodes = IP4_ARP_N_NEXT, |
| 1945 | .next_nodes = |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1946 | { |
Neale Ranns | f868632 | 2017-11-29 02:39:53 -0800 | [diff] [blame] | 1947 | [IP4_ARP_NEXT_DROP] = "error-drop", |
| 1948 | }, |
| 1949 | }; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1950 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1951 | VLIB_REGISTER_NODE (ip4_glean_node) = |
| 1952 | { |
Neale Ranns | f868632 | 2017-11-29 02:39:53 -0800 | [diff] [blame] | 1953 | .name = "ip4-glean", |
| 1954 | .vector_size = sizeof (u32), |
| 1955 | .format_trace = format_ip4_forward_next_trace, |
| 1956 | .n_errors = ARRAY_LEN (ip4_arp_error_strings), |
| 1957 | .error_strings = ip4_arp_error_strings, |
| 1958 | .n_next_nodes = IP4_ARP_N_NEXT, |
| 1959 | .next_nodes = { |
| 1960 | [IP4_ARP_NEXT_DROP] = "error-drop", |
| 1961 | }, |
| 1962 | }; |
| 1963 | /* *INDENT-ON* */ |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1964 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1965 | #define foreach_notrace_ip4_arp_error \ |
| 1966 | _(DROP) \ |
| 1967 | _(REQUEST_SENT) \ |
| 1968 | _(REPLICATE_DROP) \ |
| 1969 | _(REPLICATE_FAIL) |
| 1970 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1971 | static clib_error_t * |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1972 | arp_notrace_init (vlib_main_t * vm) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1973 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1974 | vlib_node_runtime_t *rt = vlib_node_get_runtime (vm, ip4_arp_node.index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1975 | |
| 1976 | /* don't trace ARP request packets */ |
| 1977 | #define _(a) \ |
| 1978 | vnet_pcap_drop_trace_filter_add_del \ |
| 1979 | (rt->errors[IP4_ARP_ERROR_##a], \ |
| 1980 | 1 /* is_add */); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1981 | foreach_notrace_ip4_arp_error; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1982 | #undef _ |
| 1983 | return 0; |
| 1984 | } |
| 1985 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1986 | VLIB_INIT_FUNCTION (arp_notrace_init); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1987 | |
| 1988 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1989 | #ifndef CLIB_MARCH_VARIANT |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1990 | /* Send an ARP request to see if given destination is reachable on given interface. */ |
| 1991 | clib_error_t * |
John Lo | 8637634 | 2018-06-11 20:14:49 -0400 | [diff] [blame] | 1992 | ip4_probe_neighbor (vlib_main_t * vm, ip4_address_t * dst, u32 sw_if_index, |
| 1993 | u8 refresh) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1994 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1995 | vnet_main_t *vnm = vnet_get_main (); |
| 1996 | ip4_main_t *im = &ip4_main; |
| 1997 | ethernet_arp_header_t *h; |
| 1998 | ip4_address_t *src; |
| 1999 | ip_interface_address_t *ia; |
| 2000 | ip_adjacency_t *adj; |
| 2001 | vnet_hw_interface_t *hi; |
| 2002 | vnet_sw_interface_t *si; |
| 2003 | vlib_buffer_t *b; |
Neale Ranns | 7a27274 | 2017-05-30 02:08:14 -0700 | [diff] [blame] | 2004 | adj_index_t ai; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2005 | u32 bi = 0; |
John Lo | 8637634 | 2018-06-11 20:14:49 -0400 | [diff] [blame] | 2006 | u8 unicast_rewrite = 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2007 | |
| 2008 | si = vnet_get_sw_interface (vnm, sw_if_index); |
| 2009 | |
| 2010 | if (!(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)) |
| 2011 | { |
| 2012 | return clib_error_return (0, "%U: interface %U down", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2013 | format_ip4_address, dst, |
| 2014 | format_vnet_sw_if_index_name, vnm, |
| 2015 | sw_if_index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2016 | } |
| 2017 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2018 | src = |
| 2019 | ip4_interface_address_matching_destination (im, dst, sw_if_index, &ia); |
| 2020 | if (!src) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2021 | { |
| 2022 | vnm->api_errno = VNET_API_ERROR_NO_MATCHING_INTERFACE; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2023 | return clib_error_return |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2024 | (0, |
| 2025 | "no matching interface address for destination %U (interface %U)", |
| 2026 | format_ip4_address, dst, format_vnet_sw_if_index_name, vnm, |
| 2027 | sw_if_index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2028 | } |
| 2029 | |
Neale Ranns | 7a27274 | 2017-05-30 02:08:14 -0700 | [diff] [blame] | 2030 | h = vlib_packet_template_get_packet (vm, |
| 2031 | &im->ip4_arp_request_packet_template, |
| 2032 | &bi); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2033 | |
John Lo | 084606b | 2018-06-19 15:27:48 -0400 | [diff] [blame] | 2034 | if (!h) |
| 2035 | return clib_error_return (0, "ARP request packet allocation failed"); |
| 2036 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2037 | hi = vnet_get_sup_hw_interface (vnm, sw_if_index); |
Pavel Kotucek | 5780898 | 2017-08-02 08:20:19 +0200 | [diff] [blame] | 2038 | if (PREDICT_FALSE (!hi->hw_address)) |
| 2039 | { |
| 2040 | return clib_error_return (0, "%U: interface %U do not support ip probe", |
| 2041 | format_ip4_address, dst, |
| 2042 | format_vnet_sw_if_index_name, vnm, |
| 2043 | sw_if_index); |
| 2044 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2045 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2046 | clib_memcpy (h->ip4_over_ethernet[0].ethernet, hi->hw_address, |
| 2047 | sizeof (h->ip4_over_ethernet[0].ethernet)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2048 | |
| 2049 | h->ip4_over_ethernet[0].ip4 = src[0]; |
| 2050 | h->ip4_over_ethernet[1].ip4 = dst[0]; |
| 2051 | |
| 2052 | b = vlib_get_buffer (vm, bi); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2053 | vnet_buffer (b)->sw_if_index[VLIB_RX] = |
| 2054 | vnet_buffer (b)->sw_if_index[VLIB_TX] = sw_if_index; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2055 | |
Dave Barach | 59b2565 | 2017-09-10 15:04:27 -0400 | [diff] [blame] | 2056 | ip46_address_t nh = { |
| 2057 | .ip4 = *dst, |
| 2058 | }; |
| 2059 | |
| 2060 | ai = adj_nbr_add_or_lock (FIB_PROTOCOL_IP4, |
| 2061 | VNET_LINK_IP4, &nh, sw_if_index); |
| 2062 | adj = adj_get (ai); |
| 2063 | |
| 2064 | /* Peer has been previously resolved, retrieve glean adj instead */ |
| 2065 | if (adj->lookup_next_index == IP_LOOKUP_NEXT_REWRITE) |
| 2066 | { |
John Lo | 8637634 | 2018-06-11 20:14:49 -0400 | [diff] [blame] | 2067 | if (refresh) |
| 2068 | unicast_rewrite = 1; |
| 2069 | else |
| 2070 | { |
| 2071 | adj_unlock (ai); |
| 2072 | ai = adj_glean_add_or_lock (FIB_PROTOCOL_IP4, |
| 2073 | VNET_LINK_IP4, sw_if_index, &nh); |
| 2074 | adj = adj_get (ai); |
| 2075 | } |
Dave Barach | 59b2565 | 2017-09-10 15:04:27 -0400 | [diff] [blame] | 2076 | } |
| 2077 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2078 | /* Add encapsulation string for software interface (e.g. ethernet header). */ |
| 2079 | vnet_rewrite_one_header (adj[0], h, sizeof (ethernet_header_t)); |
John Lo | 8637634 | 2018-06-11 20:14:49 -0400 | [diff] [blame] | 2080 | if (unicast_rewrite) |
| 2081 | { |
| 2082 | u16 *etype = vlib_buffer_get_current (b) - 2; |
| 2083 | etype[0] = clib_host_to_net_u16 (ETHERNET_TYPE_ARP); |
| 2084 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2085 | vlib_buffer_advance (b, -adj->rewrite_header.data_bytes); |
| 2086 | |
| 2087 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2088 | vlib_frame_t *f = vlib_get_frame_to_node (vm, hi->output_node_index); |
| 2089 | u32 *to_next = vlib_frame_vector_args (f); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2090 | to_next[0] = bi; |
| 2091 | f->n_vectors = 1; |
| 2092 | vlib_put_frame_to_node (vm, hi->output_node_index, f); |
| 2093 | } |
| 2094 | |
Neale Ranns | 7a27274 | 2017-05-30 02:08:14 -0700 | [diff] [blame] | 2095 | adj_unlock (ai); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2096 | return /* no error */ 0; |
| 2097 | } |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2098 | #endif |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2099 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2100 | typedef enum |
| 2101 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2102 | IP4_REWRITE_NEXT_DROP, |
Chris Luke | 816f3e1 | 2016-06-14 16:24:47 -0400 | [diff] [blame] | 2103 | IP4_REWRITE_NEXT_ICMP_ERROR, |
Ole Troan | 313f7e2 | 2018-04-10 16:02:51 +0200 | [diff] [blame] | 2104 | IP4_REWRITE_NEXT_FRAGMENT, |
| 2105 | IP4_REWRITE_N_NEXT /* Last */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2106 | } ip4_rewrite_next_t; |
| 2107 | |
Neale Ranns | 889fe94 | 2017-06-01 05:43:19 -0400 | [diff] [blame] | 2108 | /** |
| 2109 | * This bits of an IPv4 address to mask to construct a multicast |
| 2110 | * MAC address |
| 2111 | */ |
| 2112 | #if CLIB_ARCH_IS_BIG_ENDIAN |
| 2113 | #define IP4_MCAST_ADDR_MASK 0x007fffff |
| 2114 | #else |
| 2115 | #define IP4_MCAST_ADDR_MASK 0xffff7f00 |
| 2116 | #endif |
| 2117 | |
Ole Troan | 8a9c8f1 | 2018-05-18 11:01:31 +0200 | [diff] [blame] | 2118 | always_inline void |
| 2119 | ip4_mtu_check (vlib_buffer_t * b, u16 packet_len, |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2120 | u16 adj_packet_bytes, bool df, u16 * next, u32 * error) |
Ole Troan | 8a9c8f1 | 2018-05-18 11:01:31 +0200 | [diff] [blame] | 2121 | { |
| 2122 | if (packet_len > adj_packet_bytes) |
| 2123 | { |
| 2124 | *error = IP4_ERROR_MTU_EXCEEDED; |
| 2125 | if (df) |
| 2126 | { |
| 2127 | icmp4_error_set_vnet_buffer |
| 2128 | (b, ICMP4_destination_unreachable, |
| 2129 | ICMP4_destination_unreachable_fragmentation_needed_and_dont_fragment_set, |
| 2130 | adj_packet_bytes); |
| 2131 | *next = IP4_REWRITE_NEXT_ICMP_ERROR; |
| 2132 | } |
| 2133 | else |
| 2134 | { |
Ole Troan | 313f7e2 | 2018-04-10 16:02:51 +0200 | [diff] [blame] | 2135 | /* IP fragmentation */ |
Ole Troan | 282093f | 2018-09-19 12:38:51 +0200 | [diff] [blame] | 2136 | ip_frag_set_vnet_buffer (b, adj_packet_bytes, |
Ole Troan | b3655e5 | 2018-08-16 22:08:49 +0200 | [diff] [blame] | 2137 | IP4_FRAG_NEXT_IP4_REWRITE, 0); |
Ole Troan | 313f7e2 | 2018-04-10 16:02:51 +0200 | [diff] [blame] | 2138 | *next = IP4_REWRITE_NEXT_FRAGMENT; |
Ole Troan | 8a9c8f1 | 2018-05-18 11:01:31 +0200 | [diff] [blame] | 2139 | } |
| 2140 | } |
| 2141 | } |
| 2142 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2143 | /* Decrement TTL & update checksum. |
| 2144 | Works either endian, so no need for byte swap. */ |
| 2145 | static_always_inline void |
| 2146 | ip4_ttl_and_checksum_check (vlib_buffer_t * b, ip4_header_t * ip, u16 * next, |
| 2147 | u32 * error) |
| 2148 | { |
| 2149 | i32 ttl; |
| 2150 | u32 checksum; |
| 2151 | if (PREDICT_FALSE (b->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED)) |
| 2152 | { |
| 2153 | b->flags &= ~VNET_BUFFER_F_LOCALLY_ORIGINATED; |
| 2154 | return; |
| 2155 | } |
| 2156 | |
| 2157 | ttl = ip->ttl; |
| 2158 | |
| 2159 | /* Input node should have reject packets with ttl 0. */ |
| 2160 | ASSERT (ip->ttl > 0); |
| 2161 | |
| 2162 | checksum = ip->checksum + clib_host_to_net_u16 (0x0100); |
| 2163 | checksum += checksum >= 0xffff; |
| 2164 | |
| 2165 | ip->checksum = checksum; |
| 2166 | ttl -= 1; |
| 2167 | ip->ttl = ttl; |
| 2168 | |
| 2169 | /* |
| 2170 | * If the ttl drops below 1 when forwarding, generate |
| 2171 | * an ICMP response. |
| 2172 | */ |
| 2173 | if (PREDICT_FALSE (ttl <= 0)) |
| 2174 | { |
| 2175 | *error = IP4_ERROR_TIME_EXPIRED; |
| 2176 | vnet_buffer (b)->sw_if_index[VLIB_TX] = (u32) ~ 0; |
| 2177 | icmp4_error_set_vnet_buffer (b, ICMP4_time_exceeded, |
| 2178 | ICMP4_time_exceeded_ttl_exceeded_in_transit, |
| 2179 | 0); |
| 2180 | *next = IP4_REWRITE_NEXT_ICMP_ERROR; |
| 2181 | } |
| 2182 | |
| 2183 | /* Verify checksum. */ |
| 2184 | ASSERT ((ip->checksum == ip4_header_checksum (ip)) || |
| 2185 | (b->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM)); |
| 2186 | } |
| 2187 | |
| 2188 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2189 | always_inline uword |
| 2190 | ip4_rewrite_inline (vlib_main_t * vm, |
| 2191 | vlib_node_runtime_t * node, |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 2192 | vlib_frame_t * frame, |
| 2193 | int do_counters, int is_midchain, int is_mcast) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2194 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2195 | ip_lookup_main_t *lm = &ip4_main.lookup_main; |
| 2196 | u32 *from = vlib_frame_vector_args (frame); |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2197 | vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b; |
| 2198 | u16 nexts[VLIB_FRAME_SIZE], *next; |
| 2199 | u32 n_left_from; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2200 | vlib_node_runtime_t *error_node = |
| 2201 | vlib_node_get_runtime (vm, ip4_input_node.index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2202 | |
| 2203 | n_left_from = frame->n_vectors; |
Damjan Marion | 067cd62 | 2018-07-11 12:47:43 +0200 | [diff] [blame] | 2204 | u32 thread_index = vm->thread_index; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2205 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2206 | vlib_get_buffers (vm, from, bufs, n_left_from); |
| 2207 | clib_memset_u16 (nexts, IP4_REWRITE_NEXT_DROP, n_left_from); |
| 2208 | |
| 2209 | if (n_left_from >= 6) |
| 2210 | { |
| 2211 | int i; |
| 2212 | for (i = 0; i < 6; i++) |
| 2213 | vlib_prefetch_buffer_header (bufs[i], LOAD); |
| 2214 | } |
| 2215 | |
| 2216 | next = nexts; |
| 2217 | b = bufs; |
| 2218 | while (n_left_from >= 8) |
| 2219 | { |
| 2220 | ip_adjacency_t *adj0, *adj1; |
| 2221 | ip4_header_t *ip0, *ip1; |
| 2222 | u32 rw_len0, error0, adj_index0; |
| 2223 | u32 rw_len1, error1, adj_index1; |
| 2224 | u32 tx_sw_if_index0, tx_sw_if_index1; |
| 2225 | u8 *p; |
| 2226 | |
| 2227 | vlib_prefetch_buffer_header (b[6], LOAD); |
| 2228 | vlib_prefetch_buffer_header (b[7], LOAD); |
| 2229 | |
| 2230 | adj_index0 = vnet_buffer (b[0])->ip.adj_index[VLIB_TX]; |
| 2231 | adj_index1 = vnet_buffer (b[1])->ip.adj_index[VLIB_TX]; |
| 2232 | |
| 2233 | /* |
| 2234 | * pre-fetch the per-adjacency counters |
| 2235 | */ |
| 2236 | if (do_counters) |
| 2237 | { |
| 2238 | vlib_prefetch_combined_counter (&adjacency_counters, |
| 2239 | thread_index, adj_index0); |
| 2240 | vlib_prefetch_combined_counter (&adjacency_counters, |
| 2241 | thread_index, adj_index1); |
| 2242 | } |
| 2243 | |
| 2244 | ip0 = vlib_buffer_get_current (b[0]); |
| 2245 | ip1 = vlib_buffer_get_current (b[1]); |
| 2246 | |
| 2247 | error0 = error1 = IP4_ERROR_NONE; |
| 2248 | |
| 2249 | ip4_ttl_and_checksum_check (b[0], ip0, next + 0, &error0); |
| 2250 | ip4_ttl_and_checksum_check (b[1], ip1, next + 1, &error1); |
| 2251 | |
| 2252 | /* Rewrite packet header and updates lengths. */ |
| 2253 | adj0 = adj_get (adj_index0); |
| 2254 | adj1 = adj_get (adj_index1); |
| 2255 | |
| 2256 | /* Worth pipelining. No guarantee that adj0,1 are hot... */ |
| 2257 | rw_len0 = adj0[0].rewrite_header.data_bytes; |
| 2258 | rw_len1 = adj1[0].rewrite_header.data_bytes; |
| 2259 | vnet_buffer (b[0])->ip.save_rewrite_length = rw_len0; |
| 2260 | vnet_buffer (b[1])->ip.save_rewrite_length = rw_len1; |
| 2261 | |
| 2262 | p = vlib_buffer_get_current (b[2]); |
| 2263 | CLIB_PREFETCH (p - CLIB_CACHE_LINE_BYTES, CLIB_CACHE_LINE_BYTES, STORE); |
| 2264 | CLIB_PREFETCH (p, CLIB_CACHE_LINE_BYTES, LOAD); |
| 2265 | |
| 2266 | p = vlib_buffer_get_current (b[3]); |
| 2267 | CLIB_PREFETCH (p - CLIB_CACHE_LINE_BYTES, CLIB_CACHE_LINE_BYTES, STORE); |
| 2268 | CLIB_PREFETCH (p, CLIB_CACHE_LINE_BYTES, LOAD); |
| 2269 | |
| 2270 | /* Check MTU of outgoing interface. */ |
| 2271 | ip4_mtu_check (b[0], clib_net_to_host_u16 (ip0->length), |
| 2272 | adj0[0].rewrite_header.max_l3_packet_bytes, |
| 2273 | ip0->flags_and_fragment_offset & |
| 2274 | clib_host_to_net_u16 (IP4_HEADER_FLAG_DONT_FRAGMENT), |
| 2275 | next + 0, &error0); |
| 2276 | ip4_mtu_check (b[1], clib_net_to_host_u16 (ip1->length), |
| 2277 | adj1[0].rewrite_header.max_l3_packet_bytes, |
| 2278 | ip1->flags_and_fragment_offset & |
| 2279 | clib_host_to_net_u16 (IP4_HEADER_FLAG_DONT_FRAGMENT), |
| 2280 | next + 1, &error1); |
| 2281 | |
| 2282 | if (is_mcast) |
| 2283 | { |
| 2284 | error0 = ((adj0[0].rewrite_header.sw_if_index == |
| 2285 | vnet_buffer (b[0])->sw_if_index[VLIB_RX]) ? |
| 2286 | IP4_ERROR_SAME_INTERFACE : error0); |
| 2287 | error1 = ((adj1[0].rewrite_header.sw_if_index == |
| 2288 | vnet_buffer (b[1])->sw_if_index[VLIB_RX]) ? |
| 2289 | IP4_ERROR_SAME_INTERFACE : error1); |
| 2290 | } |
| 2291 | |
| 2292 | b[0]->error = error_node->errors[error0]; |
| 2293 | b[1]->error = error_node->errors[error1]; |
| 2294 | /* Don't adjust the buffer for ttl issue; icmp-error node wants |
| 2295 | * to see the IP headerr */ |
| 2296 | if (PREDICT_TRUE (error0 == IP4_ERROR_NONE)) |
| 2297 | { |
| 2298 | u32 next_index = adj0[0].rewrite_header.next_index; |
| 2299 | b[0]->current_data -= rw_len0; |
| 2300 | b[0]->current_length += rw_len0; |
| 2301 | tx_sw_if_index0 = adj0[0].rewrite_header.sw_if_index; |
| 2302 | vnet_buffer (b[0])->sw_if_index[VLIB_TX] = tx_sw_if_index0; |
| 2303 | |
| 2304 | if (PREDICT_FALSE |
| 2305 | (adj0[0].rewrite_header.flags & VNET_REWRITE_HAS_FEATURES)) |
| 2306 | vnet_feature_arc_start (lm->output_feature_arc_index, |
| 2307 | tx_sw_if_index0, &next_index, b[0]); |
| 2308 | next[0] = next_index; |
| 2309 | } |
| 2310 | if (PREDICT_TRUE (error1 == IP4_ERROR_NONE)) |
| 2311 | { |
| 2312 | u32 next_index = adj1[0].rewrite_header.next_index; |
| 2313 | b[1]->current_data -= rw_len1; |
| 2314 | b[1]->current_length += rw_len1; |
| 2315 | |
| 2316 | tx_sw_if_index1 = adj1[0].rewrite_header.sw_if_index; |
| 2317 | vnet_buffer (b[1])->sw_if_index[VLIB_TX] = tx_sw_if_index1; |
| 2318 | |
| 2319 | if (PREDICT_FALSE |
| 2320 | (adj1[0].rewrite_header.flags & VNET_REWRITE_HAS_FEATURES)) |
| 2321 | vnet_feature_arc_start (lm->output_feature_arc_index, |
| 2322 | tx_sw_if_index1, &next_index, b[1]); |
| 2323 | next[1] = next_index; |
| 2324 | } |
| 2325 | |
| 2326 | /* Guess we are only writing on simple Ethernet header. */ |
| 2327 | vnet_rewrite_two_headers (adj0[0], adj1[0], |
| 2328 | ip0, ip1, sizeof (ethernet_header_t)); |
| 2329 | |
| 2330 | /* |
| 2331 | * Bump the per-adjacency counters |
| 2332 | */ |
| 2333 | if (do_counters) |
| 2334 | { |
| 2335 | vlib_increment_combined_counter |
| 2336 | (&adjacency_counters, |
| 2337 | thread_index, |
| 2338 | adj_index0, 1, vlib_buffer_length_in_chain (vm, b[0]) + rw_len0); |
| 2339 | |
| 2340 | vlib_increment_combined_counter |
| 2341 | (&adjacency_counters, |
| 2342 | thread_index, |
| 2343 | adj_index1, 1, vlib_buffer_length_in_chain (vm, b[1]) + rw_len1); |
| 2344 | } |
| 2345 | |
| 2346 | if (is_midchain) |
| 2347 | { |
| 2348 | adj0->sub_type.midchain.fixup_func |
| 2349 | (vm, adj0, b[0], adj0->sub_type.midchain.fixup_data); |
| 2350 | adj1->sub_type.midchain.fixup_func |
| 2351 | (vm, adj1, b[1], adj0->sub_type.midchain.fixup_data); |
| 2352 | } |
| 2353 | |
| 2354 | if (is_mcast) |
| 2355 | { |
| 2356 | /* |
| 2357 | * copy bytes from the IP address into the MAC rewrite |
| 2358 | */ |
| 2359 | vnet_ip_mcast_fixup_header (IP4_MCAST_ADDR_MASK, |
| 2360 | adj0->rewrite_header.dst_mcast_offset, |
| 2361 | &ip0->dst_address.as_u32, (u8 *) ip0); |
| 2362 | vnet_ip_mcast_fixup_header (IP4_MCAST_ADDR_MASK, |
| 2363 | adj0->rewrite_header.dst_mcast_offset, |
| 2364 | &ip1->dst_address.as_u32, (u8 *) ip1); |
| 2365 | } |
| 2366 | |
| 2367 | next += 2; |
| 2368 | b += 2; |
| 2369 | n_left_from -= 2; |
| 2370 | } |
| 2371 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2372 | while (n_left_from > 0) |
| 2373 | { |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2374 | ip_adjacency_t *adj0; |
| 2375 | ip4_header_t *ip0; |
| 2376 | u32 rw_len0, adj_index0, error0; |
| 2377 | u32 tx_sw_if_index0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2378 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2379 | adj_index0 = vnet_buffer (b[0])->ip.adj_index[VLIB_TX]; |
| 2380 | |
| 2381 | adj0 = adj_get (adj_index0); |
| 2382 | |
| 2383 | if (do_counters) |
| 2384 | vlib_prefetch_combined_counter (&adjacency_counters, |
| 2385 | thread_index, adj_index0); |
| 2386 | |
| 2387 | ip0 = vlib_buffer_get_current (b[0]); |
| 2388 | |
| 2389 | error0 = IP4_ERROR_NONE; |
| 2390 | |
| 2391 | ip4_ttl_and_checksum_check (b[0], ip0, next + 0, &error0); |
| 2392 | |
| 2393 | |
| 2394 | /* Update packet buffer attributes/set output interface. */ |
| 2395 | rw_len0 = adj0[0].rewrite_header.data_bytes; |
| 2396 | vnet_buffer (b[0])->ip.save_rewrite_length = rw_len0; |
| 2397 | |
| 2398 | /* Check MTU of outgoing interface. */ |
| 2399 | ip4_mtu_check (b[0], clib_net_to_host_u16 (ip0->length), |
| 2400 | adj0[0].rewrite_header.max_l3_packet_bytes, |
| 2401 | ip0->flags_and_fragment_offset & |
| 2402 | clib_host_to_net_u16 (IP4_HEADER_FLAG_DONT_FRAGMENT), |
| 2403 | next + 0, &error0); |
| 2404 | |
| 2405 | if (is_mcast) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2406 | { |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2407 | error0 = ((adj0[0].rewrite_header.sw_if_index == |
| 2408 | vnet_buffer (b[0])->sw_if_index[VLIB_RX]) ? |
| 2409 | IP4_ERROR_SAME_INTERFACE : error0); |
| 2410 | } |
| 2411 | b[0]->error = error_node->errors[error0]; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2412 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2413 | /* Don't adjust the buffer for ttl issue; icmp-error node wants |
| 2414 | * to see the IP headerr */ |
| 2415 | if (PREDICT_TRUE (error0 == IP4_ERROR_NONE)) |
| 2416 | { |
| 2417 | u32 next_index = adj0[0].rewrite_header.next_index; |
| 2418 | b[0]->current_data -= rw_len0; |
| 2419 | b[0]->current_length += rw_len0; |
| 2420 | tx_sw_if_index0 = adj0[0].rewrite_header.sw_if_index; |
| 2421 | vnet_buffer (b[0])->sw_if_index[VLIB_TX] = tx_sw_if_index0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2422 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2423 | if (PREDICT_FALSE |
| 2424 | (adj0[0].rewrite_header.flags & VNET_REWRITE_HAS_FEATURES)) |
| 2425 | vnet_feature_arc_start (lm->output_feature_arc_index, |
| 2426 | tx_sw_if_index0, &next_index, b[0]); |
| 2427 | next[0] = next_index; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2428 | } |
| 2429 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2430 | /* Guess we are only writing on simple Ethernet header. */ |
| 2431 | vnet_rewrite_one_header (adj0[0], ip0, sizeof (ethernet_header_t)); |
| 2432 | |
| 2433 | if (do_counters) |
| 2434 | vlib_increment_combined_counter |
| 2435 | (&adjacency_counters, |
| 2436 | thread_index, adj_index0, 1, |
| 2437 | vlib_buffer_length_in_chain (vm, b[0]) + rw_len0); |
| 2438 | |
| 2439 | if (is_midchain) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2440 | { |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2441 | adj0->sub_type.midchain.fixup_func |
| 2442 | (vm, adj0, b[0], adj0->sub_type.midchain.fixup_data); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2443 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2444 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2445 | if (is_mcast) |
| 2446 | { |
| 2447 | /* |
| 2448 | * copy bytes from the IP address into the MAC rewrite |
| 2449 | */ |
| 2450 | vnet_ip_mcast_fixup_header (IP4_MCAST_ADDR_MASK, |
| 2451 | adj0->rewrite_header.dst_mcast_offset, |
| 2452 | &ip0->dst_address.as_u32, (u8 *) ip0); |
| 2453 | } |
| 2454 | |
| 2455 | next += 1; |
| 2456 | b += 1; |
| 2457 | n_left_from -= 1; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2458 | } |
| 2459 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2460 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2461 | /* Need to do trace after rewrites to pick up new packet data. */ |
| 2462 | if (node->flags & VLIB_NODE_FLAG_TRACE) |
Neale Ranns | f06aea5 | 2016-11-29 06:51:37 -0800 | [diff] [blame] | 2463 | ip4_forward_next_trace (vm, node, frame, VLIB_TX); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2464 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2465 | vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2466 | return frame->n_vectors; |
| 2467 | } |
| 2468 | |
Dave Barach | 132d51d | 2016-07-07 10:10:17 -0400 | [diff] [blame] | 2469 | |
Neale Ranns | f06aea5 | 2016-11-29 06:51:37 -0800 | [diff] [blame] | 2470 | /** @brief IPv4 rewrite node. |
| 2471 | @node ip4-rewrite |
Dave Barach | 132d51d | 2016-07-07 10:10:17 -0400 | [diff] [blame] | 2472 | |
| 2473 | This is the IPv4 transit-rewrite node: decrement TTL, fix the ipv4 |
| 2474 | header checksum, fetch the ip adjacency, check the outbound mtu, |
| 2475 | apply the adjacency rewrite, and send pkts to the adjacency |
| 2476 | rewrite header's rewrite_next_index. |
| 2477 | |
| 2478 | @param vm vlib_main_t corresponding to the current thread |
| 2479 | @param node vlib_node_runtime_t |
| 2480 | @param frame vlib_frame_t whose contents should be dispatched |
| 2481 | |
| 2482 | @par Graph mechanics: buffer metadata, next index usage |
| 2483 | |
| 2484 | @em Uses: |
| 2485 | - <code>vnet_buffer(b)->ip.adj_index[VLIB_TX]</code> |
| 2486 | - the rewrite adjacency index |
| 2487 | - <code>adj->lookup_next_index</code> |
| 2488 | - Must be IP_LOOKUP_NEXT_REWRITE or IP_LOOKUP_NEXT_ARP, otherwise |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2489 | the packet will be dropped. |
Dave Barach | 132d51d | 2016-07-07 10:10:17 -0400 | [diff] [blame] | 2490 | - <code>adj->rewrite_header</code> |
| 2491 | - Rewrite string length, rewrite string, next_index |
| 2492 | |
| 2493 | @em Sets: |
| 2494 | - <code>b->current_data, b->current_length</code> |
| 2495 | - Updated net of applying the rewrite string |
| 2496 | |
| 2497 | <em>Next Indices:</em> |
| 2498 | - <code> adj->rewrite_header.next_index </code> |
Vijayabhaskar Katamreddy | ce07412 | 2017-11-15 13:50:26 -0800 | [diff] [blame] | 2499 | or @c ip4-drop |
Dave Barach | 132d51d | 2016-07-07 10:10:17 -0400 | [diff] [blame] | 2500 | */ |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2501 | |
| 2502 | VLIB_NODE_FN (ip4_rewrite_node) (vlib_main_t * vm, vlib_node_runtime_t * node, |
| 2503 | vlib_frame_t * frame) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2504 | { |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 2505 | if (adj_are_counters_enabled ()) |
| 2506 | return ip4_rewrite_inline (vm, node, frame, 1, 0, 0); |
| 2507 | else |
| 2508 | return ip4_rewrite_inline (vm, node, frame, 0, 0, 0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2509 | } |
| 2510 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2511 | VLIB_NODE_FN (ip4_rewrite_bcast_node) (vlib_main_t * vm, |
| 2512 | vlib_node_runtime_t * node, |
| 2513 | vlib_frame_t * frame) |
Neale Ranns | 1855b8e | 2018-07-11 10:31:26 -0700 | [diff] [blame] | 2514 | { |
| 2515 | if (adj_are_counters_enabled ()) |
| 2516 | return ip4_rewrite_inline (vm, node, frame, 1, 0, 0); |
| 2517 | else |
| 2518 | return ip4_rewrite_inline (vm, node, frame, 0, 0, 0); |
| 2519 | } |
| 2520 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2521 | VLIB_NODE_FN (ip4_midchain_node) (vlib_main_t * vm, |
| 2522 | vlib_node_runtime_t * node, |
| 2523 | vlib_frame_t * frame) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2524 | { |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 2525 | if (adj_are_counters_enabled ()) |
| 2526 | return ip4_rewrite_inline (vm, node, frame, 1, 1, 0); |
| 2527 | else |
| 2528 | return ip4_rewrite_inline (vm, node, frame, 0, 1, 0); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2529 | } |
| 2530 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2531 | VLIB_NODE_FN (ip4_rewrite_mcast_node) (vlib_main_t * vm, |
| 2532 | vlib_node_runtime_t * node, |
| 2533 | vlib_frame_t * frame) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2534 | { |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 2535 | if (adj_are_counters_enabled ()) |
| 2536 | return ip4_rewrite_inline (vm, node, frame, 1, 0, 1); |
| 2537 | else |
| 2538 | return ip4_rewrite_inline (vm, node, frame, 0, 0, 1); |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2539 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2540 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2541 | VLIB_NODE_FN (ip4_mcast_midchain_node) (vlib_main_t * vm, |
| 2542 | vlib_node_runtime_t * node, |
| 2543 | vlib_frame_t * frame) |
Neale Ranns | 0f26c5a | 2017-03-01 15:12:11 -0800 | [diff] [blame] | 2544 | { |
| 2545 | if (adj_are_counters_enabled ()) |
| 2546 | return ip4_rewrite_inline (vm, node, frame, 1, 1, 1); |
| 2547 | else |
| 2548 | return ip4_rewrite_inline (vm, node, frame, 0, 1, 1); |
| 2549 | } |
| 2550 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2551 | /* *INDENT-OFF* */ |
| 2552 | VLIB_REGISTER_NODE (ip4_rewrite_node) = { |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2553 | .name = "ip4-rewrite", |
| 2554 | .vector_size = sizeof (u32), |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2555 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2556 | .format_trace = format_ip4_rewrite_trace, |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2557 | |
Ole Troan | 313f7e2 | 2018-04-10 16:02:51 +0200 | [diff] [blame] | 2558 | .n_next_nodes = IP4_REWRITE_N_NEXT, |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2559 | .next_nodes = { |
Vijayabhaskar Katamreddy | ce07412 | 2017-11-15 13:50:26 -0800 | [diff] [blame] | 2560 | [IP4_REWRITE_NEXT_DROP] = "ip4-drop", |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2561 | [IP4_REWRITE_NEXT_ICMP_ERROR] = "ip4-icmp-error", |
Ole Troan | 313f7e2 | 2018-04-10 16:02:51 +0200 | [diff] [blame] | 2562 | [IP4_REWRITE_NEXT_FRAGMENT] = "ip4-frag", |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2563 | }, |
| 2564 | }; |
Neale Ranns | 1855b8e | 2018-07-11 10:31:26 -0700 | [diff] [blame] | 2565 | |
| 2566 | VLIB_REGISTER_NODE (ip4_rewrite_bcast_node) = { |
Neale Ranns | 1855b8e | 2018-07-11 10:31:26 -0700 | [diff] [blame] | 2567 | .name = "ip4-rewrite-bcast", |
| 2568 | .vector_size = sizeof (u32), |
| 2569 | |
| 2570 | .format_trace = format_ip4_rewrite_trace, |
| 2571 | .sibling_of = "ip4-rewrite", |
| 2572 | }; |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2573 | |
| 2574 | VLIB_REGISTER_NODE (ip4_rewrite_mcast_node) = { |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2575 | .name = "ip4-rewrite-mcast", |
| 2576 | .vector_size = sizeof (u32), |
| 2577 | |
| 2578 | .format_trace = format_ip4_rewrite_trace, |
| 2579 | .sibling_of = "ip4-rewrite", |
| 2580 | }; |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2581 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2582 | VLIB_REGISTER_NODE (ip4_mcast_midchain_node) = { |
Neale Ranns | 0f26c5a | 2017-03-01 15:12:11 -0800 | [diff] [blame] | 2583 | .name = "ip4-mcast-midchain", |
| 2584 | .vector_size = sizeof (u32), |
| 2585 | |
| 2586 | .format_trace = format_ip4_rewrite_trace, |
| 2587 | .sibling_of = "ip4-rewrite", |
| 2588 | }; |
Neale Ranns | 0f26c5a | 2017-03-01 15:12:11 -0800 | [diff] [blame] | 2589 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2590 | VLIB_REGISTER_NODE (ip4_midchain_node) = { |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2591 | .name = "ip4-midchain", |
| 2592 | .vector_size = sizeof (u32), |
| 2593 | .format_trace = format_ip4_forward_next_trace, |
| 2594 | .sibling_of = "ip4-rewrite", |
| 2595 | }; |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2596 | /* *INDENT-ON */ |
Damjan Marion | 1c80e83 | 2016-05-11 23:07:18 +0200 | [diff] [blame] | 2597 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2598 | static int |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2599 | ip4_lookup_validate (ip4_address_t * a, u32 fib_index0) |
| 2600 | { |
| 2601 | ip4_fib_mtrie_t *mtrie0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2602 | ip4_fib_mtrie_leaf_t leaf0; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2603 | u32 lbi0; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2604 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2605 | mtrie0 = &ip4_fib_get (fib_index0)->mtrie; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2606 | |
Neale Ranns | 04a75e3 | 2017-03-23 06:46:01 -0700 | [diff] [blame] | 2607 | leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, a); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2608 | leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, a, 2); |
| 2609 | leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, a, 3); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2610 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2611 | lbi0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2612 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2613 | return lbi0 == ip4_fib_table_lookup_lb (ip4_fib_get (fib_index0), a); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2614 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2615 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2616 | static clib_error_t * |
| 2617 | test_lookup_command_fn (vlib_main_t * vm, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2618 | unformat_input_t * input, vlib_cli_command_t * cmd) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2619 | { |
Billy McFall | 309fe06 | 2016-10-14 07:37:33 -0400 | [diff] [blame] | 2620 | ip4_fib_t *fib; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2621 | u32 table_id = 0; |
| 2622 | f64 count = 1; |
| 2623 | u32 n; |
| 2624 | int i; |
| 2625 | ip4_address_t ip4_base_address; |
| 2626 | u64 errors = 0; |
| 2627 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2628 | while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| 2629 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2630 | if (unformat (input, "table %d", &table_id)) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2631 | { |
| 2632 | /* Make sure the entry exists. */ |
| 2633 | fib = ip4_fib_get (table_id); |
| 2634 | if ((fib) && (fib->index != table_id)) |
| 2635 | return clib_error_return (0, "<fib-index> %d does not exist", |
| 2636 | table_id); |
| 2637 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2638 | else if (unformat (input, "count %f", &count)) |
| 2639 | ; |
| 2640 | |
| 2641 | else if (unformat (input, "%U", |
| 2642 | unformat_ip4_address, &ip4_base_address)) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2643 | ; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2644 | else |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2645 | return clib_error_return (0, "unknown input `%U'", |
| 2646 | format_unformat_error, input); |
| 2647 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2648 | |
| 2649 | n = count; |
| 2650 | |
| 2651 | for (i = 0; i < n; i++) |
| 2652 | { |
| 2653 | if (!ip4_lookup_validate (&ip4_base_address, table_id)) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2654 | errors++; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2655 | |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2656 | ip4_base_address.as_u32 = |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2657 | clib_host_to_net_u32 (1 + |
| 2658 | clib_net_to_host_u32 (ip4_base_address.as_u32)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2659 | } |
| 2660 | |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2661 | if (errors) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2662 | vlib_cli_output (vm, "%llu errors out of %d lookups\n", errors, n); |
| 2663 | else |
| 2664 | vlib_cli_output (vm, "No errors in %d lookups\n", n); |
| 2665 | |
| 2666 | return 0; |
| 2667 | } |
| 2668 | |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 2669 | /*? |
| 2670 | * Perform a lookup of an IPv4 Address (or range of addresses) in the |
| 2671 | * given FIB table to determine if there is a conflict with the |
| 2672 | * adjacency table. The fib-id can be determined by using the |
| 2673 | * '<em>show ip fib</em>' command. If fib-id is not entered, default value |
| 2674 | * of 0 is used. |
| 2675 | * |
| 2676 | * @todo This command uses fib-id, other commands use table-id (not |
| 2677 | * just a name, they are different indexes). Would like to change this |
| 2678 | * to table-id for consistency. |
| 2679 | * |
| 2680 | * @cliexpar |
| 2681 | * Example of how to run the test lookup command: |
| 2682 | * @cliexstart{test lookup 172.16.1.1 table 1 count 2} |
| 2683 | * No errors in 2 lookups |
| 2684 | * @cliexend |
| 2685 | ?*/ |
| 2686 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2687 | VLIB_CLI_COMMAND (lookup_test_command, static) = |
| 2688 | { |
| 2689 | .path = "test lookup", |
| 2690 | .short_help = "test lookup <ipv4-addr> [table <fib-id>] [count <nn>]", |
| 2691 | .function = test_lookup_command_fn, |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2692 | }; |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 2693 | /* *INDENT-ON* */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2694 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2695 | #ifndef CLIB_MARCH_VARIANT |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2696 | int |
| 2697 | vnet_set_ip4_flow_hash (u32 table_id, u32 flow_hash_config) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2698 | { |
Neale Ranns | 107e7d4 | 2017-04-11 09:55:19 -0700 | [diff] [blame] | 2699 | u32 fib_index; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2700 | |
Neale Ranns | 107e7d4 | 2017-04-11 09:55:19 -0700 | [diff] [blame] | 2701 | fib_index = fib_table_find (FIB_PROTOCOL_IP4, table_id); |
| 2702 | |
| 2703 | if (~0 == fib_index) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2704 | return VNET_API_ERROR_NO_SUCH_FIB; |
| 2705 | |
Neale Ranns | 227038a | 2017-04-21 01:07:59 -0700 | [diff] [blame] | 2706 | fib_table_set_flow_hash_config (fib_index, FIB_PROTOCOL_IP4, |
| 2707 | flow_hash_config); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2708 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2709 | return 0; |
| 2710 | } |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2711 | #endif |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2712 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2713 | static clib_error_t * |
| 2714 | set_ip_flow_hash_command_fn (vlib_main_t * vm, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2715 | unformat_input_t * input, |
| 2716 | vlib_cli_command_t * cmd) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2717 | { |
| 2718 | int matched = 0; |
| 2719 | u32 table_id = 0; |
| 2720 | u32 flow_hash_config = 0; |
| 2721 | int rv; |
| 2722 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2723 | while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| 2724 | { |
| 2725 | if (unformat (input, "table %d", &table_id)) |
| 2726 | matched = 1; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2727 | #define _(a,v) \ |
| 2728 | else if (unformat (input, #a)) { flow_hash_config |= v; matched=1;} |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2729 | foreach_flow_hash_bit |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2730 | #undef _ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2731 | else |
| 2732 | break; |
| 2733 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2734 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2735 | if (matched == 0) |
| 2736 | return clib_error_return (0, "unknown input `%U'", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2737 | format_unformat_error, input); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2738 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2739 | rv = vnet_set_ip4_flow_hash (table_id, flow_hash_config); |
| 2740 | switch (rv) |
| 2741 | { |
| 2742 | case 0: |
| 2743 | break; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2744 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2745 | case VNET_API_ERROR_NO_SUCH_FIB: |
| 2746 | return clib_error_return (0, "no such FIB table %d", table_id); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2747 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2748 | default: |
| 2749 | clib_warning ("BUG: illegal flow hash config 0x%x", flow_hash_config); |
| 2750 | break; |
| 2751 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2752 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2753 | return 0; |
| 2754 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2755 | |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 2756 | /*? |
| 2757 | * Configure the set of IPv4 fields used by the flow hash. |
| 2758 | * |
| 2759 | * @cliexpar |
| 2760 | * Example of how to set the flow hash on a given table: |
| 2761 | * @cliexcmd{set ip flow-hash table 7 dst sport dport proto} |
| 2762 | * Example of display the configured flow hash: |
| 2763 | * @cliexstart{show ip fib} |
Billy McFall | ebb9a6a | 2016-10-17 11:35:32 -0400 | [diff] [blame] | 2764 | * ipv4-VRF:0, fib_index 0, flow hash: src dst sport dport proto |
| 2765 | * 0.0.0.0/0 |
| 2766 | * unicast-ip4-chain |
| 2767 | * [@0]: dpo-load-balance: [index:0 buckets:1 uRPF:0 to:[0:0]] |
| 2768 | * [0] [@0]: dpo-drop ip6 |
| 2769 | * 0.0.0.0/32 |
| 2770 | * unicast-ip4-chain |
| 2771 | * [@0]: dpo-load-balance: [index:1 buckets:1 uRPF:1 to:[0:0]] |
| 2772 | * [0] [@0]: dpo-drop ip6 |
| 2773 | * 224.0.0.0/8 |
| 2774 | * unicast-ip4-chain |
| 2775 | * [@0]: dpo-load-balance: [index:3 buckets:1 uRPF:3 to:[0:0]] |
| 2776 | * [0] [@0]: dpo-drop ip6 |
| 2777 | * 6.0.1.2/32 |
| 2778 | * unicast-ip4-chain |
| 2779 | * [@0]: dpo-load-balance: [index:30 buckets:1 uRPF:29 to:[0:0]] |
| 2780 | * [0] [@3]: arp-ipv4: via 6.0.0.1 af_packet0 |
| 2781 | * 7.0.0.1/32 |
| 2782 | * unicast-ip4-chain |
| 2783 | * [@0]: dpo-load-balance: [index:31 buckets:4 uRPF:30 to:[0:0]] |
| 2784 | * [0] [@3]: arp-ipv4: via 6.0.0.2 af_packet0 |
| 2785 | * [1] [@3]: arp-ipv4: via 6.0.0.2 af_packet0 |
| 2786 | * [2] [@3]: arp-ipv4: via 6.0.0.2 af_packet0 |
| 2787 | * [3] [@3]: arp-ipv4: via 6.0.0.1 af_packet0 |
| 2788 | * 240.0.0.0/8 |
| 2789 | * unicast-ip4-chain |
| 2790 | * [@0]: dpo-load-balance: [index:2 buckets:1 uRPF:2 to:[0:0]] |
| 2791 | * [0] [@0]: dpo-drop ip6 |
| 2792 | * 255.255.255.255/32 |
| 2793 | * unicast-ip4-chain |
| 2794 | * [@0]: dpo-load-balance: [index:4 buckets:1 uRPF:4 to:[0:0]] |
| 2795 | * [0] [@0]: dpo-drop ip6 |
| 2796 | * ipv4-VRF:7, fib_index 1, flow hash: dst sport dport proto |
| 2797 | * 0.0.0.0/0 |
| 2798 | * unicast-ip4-chain |
| 2799 | * [@0]: dpo-load-balance: [index:12 buckets:1 uRPF:11 to:[0:0]] |
| 2800 | * [0] [@0]: dpo-drop ip6 |
| 2801 | * 0.0.0.0/32 |
| 2802 | * unicast-ip4-chain |
| 2803 | * [@0]: dpo-load-balance: [index:13 buckets:1 uRPF:12 to:[0:0]] |
| 2804 | * [0] [@0]: dpo-drop ip6 |
| 2805 | * 172.16.1.0/24 |
| 2806 | * unicast-ip4-chain |
| 2807 | * [@0]: dpo-load-balance: [index:17 buckets:1 uRPF:16 to:[0:0]] |
| 2808 | * [0] [@4]: ipv4-glean: af_packet0 |
| 2809 | * 172.16.1.1/32 |
| 2810 | * unicast-ip4-chain |
| 2811 | * [@0]: dpo-load-balance: [index:18 buckets:1 uRPF:17 to:[1:84]] |
| 2812 | * [0] [@2]: dpo-receive: 172.16.1.1 on af_packet0 |
| 2813 | * 172.16.1.2/32 |
| 2814 | * unicast-ip4-chain |
| 2815 | * [@0]: dpo-load-balance: [index:21 buckets:1 uRPF:20 to:[0:0]] |
| 2816 | * [0] [@5]: ipv4 via 172.16.1.2 af_packet0: IP4: 02:fe:9e:70:7a:2b -> 26:a5:f6:9c:3a:36 |
| 2817 | * 172.16.2.0/24 |
| 2818 | * unicast-ip4-chain |
| 2819 | * [@0]: dpo-load-balance: [index:19 buckets:1 uRPF:18 to:[0:0]] |
| 2820 | * [0] [@4]: ipv4-glean: af_packet1 |
| 2821 | * 172.16.2.1/32 |
| 2822 | * unicast-ip4-chain |
| 2823 | * [@0]: dpo-load-balance: [index:20 buckets:1 uRPF:19 to:[0:0]] |
| 2824 | * [0] [@2]: dpo-receive: 172.16.2.1 on af_packet1 |
| 2825 | * 224.0.0.0/8 |
| 2826 | * unicast-ip4-chain |
| 2827 | * [@0]: dpo-load-balance: [index:15 buckets:1 uRPF:14 to:[0:0]] |
| 2828 | * [0] [@0]: dpo-drop ip6 |
| 2829 | * 240.0.0.0/8 |
| 2830 | * unicast-ip4-chain |
| 2831 | * [@0]: dpo-load-balance: [index:14 buckets:1 uRPF:13 to:[0:0]] |
| 2832 | * [0] [@0]: dpo-drop ip6 |
| 2833 | * 255.255.255.255/32 |
| 2834 | * unicast-ip4-chain |
| 2835 | * [@0]: dpo-load-balance: [index:16 buckets:1 uRPF:15 to:[0:0]] |
| 2836 | * [0] [@0]: dpo-drop ip6 |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 2837 | * @cliexend |
| 2838 | ?*/ |
| 2839 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2840 | VLIB_CLI_COMMAND (set_ip_flow_hash_command, static) = |
| 2841 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2842 | .path = "set ip flow-hash", |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2843 | .short_help = |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 2844 | "set ip flow-hash table <table-id> [src] [dst] [sport] [dport] [proto] [reverse]", |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2845 | .function = set_ip_flow_hash_command_fn, |
| 2846 | }; |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 2847 | /* *INDENT-ON* */ |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2848 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2849 | #ifndef CLIB_MARCH_VARIANT |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2850 | int |
| 2851 | vnet_set_ip4_classify_intfc (vlib_main_t * vm, u32 sw_if_index, |
| 2852 | u32 table_index) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2853 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2854 | vnet_main_t *vnm = vnet_get_main (); |
| 2855 | vnet_interface_main_t *im = &vnm->interface_main; |
| 2856 | ip4_main_t *ipm = &ip4_main; |
| 2857 | ip_lookup_main_t *lm = &ipm->lookup_main; |
| 2858 | vnet_classify_main_t *cm = &vnet_classify_main; |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 2859 | ip4_address_t *if_addr; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2860 | |
| 2861 | if (pool_is_free_index (im->sw_interfaces, sw_if_index)) |
| 2862 | return VNET_API_ERROR_NO_MATCHING_INTERFACE; |
| 2863 | |
| 2864 | if (table_index != ~0 && pool_is_free_index (cm->tables, table_index)) |
| 2865 | return VNET_API_ERROR_NO_SUCH_ENTRY; |
| 2866 | |
| 2867 | vec_validate (lm->classify_table_index_by_sw_if_index, sw_if_index); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2868 | lm->classify_table_index_by_sw_if_index[sw_if_index] = table_index; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2869 | |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 2870 | if_addr = ip4_interface_first_address (ipm, sw_if_index, NULL); |
| 2871 | |
| 2872 | if (NULL != if_addr) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2873 | { |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 2874 | fib_prefix_t pfx = { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2875 | .fp_len = 32, |
| 2876 | .fp_proto = FIB_PROTOCOL_IP4, |
| 2877 | .fp_addr.ip4 = *if_addr, |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 2878 | }; |
| 2879 | u32 fib_index; |
| 2880 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2881 | fib_index = fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, |
| 2882 | sw_if_index); |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 2883 | |
| 2884 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2885 | if (table_index != (u32) ~ 0) |
| 2886 | { |
| 2887 | dpo_id_t dpo = DPO_INVALID; |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 2888 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2889 | dpo_set (&dpo, |
| 2890 | DPO_CLASSIFY, |
| 2891 | DPO_PROTO_IP4, |
| 2892 | classify_dpo_create (DPO_PROTO_IP4, table_index)); |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 2893 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2894 | fib_table_entry_special_dpo_add (fib_index, |
| 2895 | &pfx, |
| 2896 | FIB_SOURCE_CLASSIFY, |
| 2897 | FIB_ENTRY_FLAG_NONE, &dpo); |
| 2898 | dpo_reset (&dpo); |
| 2899 | } |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 2900 | else |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2901 | { |
| 2902 | fib_table_entry_special_remove (fib_index, |
| 2903 | &pfx, FIB_SOURCE_CLASSIFY); |
| 2904 | } |
| 2905 | } |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 2906 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2907 | return 0; |
| 2908 | } |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2909 | #endif |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2910 | |
| 2911 | static clib_error_t * |
| 2912 | set_ip_classify_command_fn (vlib_main_t * vm, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2913 | unformat_input_t * input, |
| 2914 | vlib_cli_command_t * cmd) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2915 | { |
| 2916 | u32 table_index = ~0; |
| 2917 | int table_index_set = 0; |
| 2918 | u32 sw_if_index = ~0; |
| 2919 | int rv; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2920 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2921 | while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| 2922 | { |
| 2923 | if (unformat (input, "table-index %d", &table_index)) |
| 2924 | table_index_set = 1; |
| 2925 | else if (unformat (input, "intfc %U", unformat_vnet_sw_interface, |
| 2926 | vnet_get_main (), &sw_if_index)) |
| 2927 | ; |
| 2928 | else |
| 2929 | break; |
| 2930 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2931 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2932 | if (table_index_set == 0) |
| 2933 | return clib_error_return (0, "classify table-index must be specified"); |
| 2934 | |
| 2935 | if (sw_if_index == ~0) |
| 2936 | return clib_error_return (0, "interface / subif must be specified"); |
| 2937 | |
| 2938 | rv = vnet_set_ip4_classify_intfc (vm, sw_if_index, table_index); |
| 2939 | |
| 2940 | switch (rv) |
| 2941 | { |
| 2942 | case 0: |
| 2943 | break; |
| 2944 | |
| 2945 | case VNET_API_ERROR_NO_MATCHING_INTERFACE: |
| 2946 | return clib_error_return (0, "No such interface"); |
| 2947 | |
| 2948 | case VNET_API_ERROR_NO_SUCH_ENTRY: |
| 2949 | return clib_error_return (0, "No such classifier table"); |
| 2950 | } |
| 2951 | return 0; |
| 2952 | } |
| 2953 | |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 2954 | /*? |
| 2955 | * Assign a classification table to an interface. The classification |
| 2956 | * table is created using the '<em>classify table</em>' and '<em>classify session</em>' |
| 2957 | * commands. Once the table is create, use this command to filter packets |
| 2958 | * on an interface. |
| 2959 | * |
| 2960 | * @cliexpar |
| 2961 | * Example of how to assign a classification table to an interface: |
| 2962 | * @cliexcmd{set ip classify intfc GigabitEthernet2/0/0 table-index 1} |
| 2963 | ?*/ |
| 2964 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2965 | VLIB_CLI_COMMAND (set_ip_classify_command, static) = |
| 2966 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2967 | .path = "set ip classify", |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2968 | .short_help = |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 2969 | "set ip classify intfc <interface> table-index <classify-idx>", |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2970 | .function = set_ip_classify_command_fn, |
| 2971 | }; |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 2972 | /* *INDENT-ON* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2973 | |
Neale Ranns | 1ec3652 | 2017-11-29 05:20:37 -0800 | [diff] [blame] | 2974 | static clib_error_t * |
| 2975 | ip4_config (vlib_main_t * vm, unformat_input_t * input) |
| 2976 | { |
| 2977 | ip4_main_t *im = &ip4_main; |
| 2978 | uword heapsize = 0; |
| 2979 | |
| 2980 | while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| 2981 | { |
| 2982 | if (unformat (input, "heap-size %U", unformat_memory_size, &heapsize)) |
| 2983 | ; |
| 2984 | else |
| 2985 | return clib_error_return (0, |
| 2986 | "invalid heap-size parameter `%U'", |
| 2987 | format_unformat_error, input); |
| 2988 | } |
| 2989 | |
| 2990 | im->mtrie_heap_size = heapsize; |
| 2991 | |
| 2992 | return 0; |
| 2993 | } |
| 2994 | |
| 2995 | VLIB_EARLY_CONFIG_FUNCTION (ip4_config, "ip"); |
| 2996 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2997 | /* |
| 2998 | * fd.io coding-style-patch-verification: ON |
| 2999 | * |
| 3000 | * Local Variables: |
| 3001 | * eval: (c-set-style "gnu") |
| 3002 | * End: |
| 3003 | */ |