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> |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 42 | #include <vnet/ethernet/ethernet.h> /* for ethernet_header_t */ |
| 43 | #include <vnet/ethernet/arp_packet.h> /* for ethernet_arp_header_t */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 44 | #include <vnet/ppp/ppp.h> |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 45 | #include <vnet/srp/srp.h> /* for srp_hw_interface_class */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 46 | #include <vnet/api_errno.h> /* for API error numbers */ |
| 47 | #include <vnet/fib/fib_table.h> /* for FIB table and entry creation */ |
| 48 | #include <vnet/fib/fib_entry.h> /* for FIB table and entry creation */ |
| 49 | #include <vnet/fib/fib_urpf_list.h> /* for FIB uRPF check */ |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 50 | #include <vnet/fib/ip4_fib.h> |
| 51 | #include <vnet/dpo/load_balance.h> |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 52 | #include <vnet/dpo/load_balance_map.h> |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 53 | #include <vnet/dpo/classify_dpo.h> |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 54 | #include <vnet/mfib/mfib_table.h> /* for mFIB table and entry creation */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 55 | |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 56 | /** |
| 57 | * @file |
| 58 | * @brief IPv4 Forwarding. |
| 59 | * |
| 60 | * This file contains the source code for IPv4 forwarding. |
| 61 | */ |
| 62 | |
Pierre Pfister | 0febaf1 | 2016-06-08 12:23:21 +0100 | [diff] [blame] | 63 | void |
| 64 | ip4_forward_next_trace (vlib_main_t * vm, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 65 | vlib_node_runtime_t * node, |
| 66 | vlib_frame_t * frame, |
| 67 | vlib_rx_or_tx_t which_adj_index); |
Pierre Pfister | 0febaf1 | 2016-06-08 12:23:21 +0100 | [diff] [blame] | 68 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 69 | always_inline uword |
| 70 | ip4_lookup_inline (vlib_main_t * vm, |
| 71 | vlib_node_runtime_t * node, |
| 72 | vlib_frame_t * frame, |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 73 | int lookup_for_responses_to_locally_received_packets) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 74 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 75 | ip4_main_t *im = &ip4_main; |
| 76 | vlib_combined_counter_main_t *cm = &load_balance_main.lbm_to_counters; |
| 77 | u32 n_left_from, n_left_to_next, *from, *to_next; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 78 | ip_lookup_next_t next; |
Damjan Marion | 586afd7 | 2017-04-05 19:18:20 +0200 | [diff] [blame] | 79 | u32 thread_index = vlib_get_thread_index (); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 80 | |
| 81 | from = vlib_frame_vector_args (frame); |
| 82 | n_left_from = frame->n_vectors; |
| 83 | next = node->cached_next_index; |
| 84 | |
| 85 | while (n_left_from > 0) |
| 86 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 87 | vlib_get_next_frame (vm, node, next, to_next, n_left_to_next); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 88 | |
Dave Barach | 670909e | 2016-10-18 15:25:35 -0400 | [diff] [blame] | 89 | while (n_left_from >= 8 && n_left_to_next >= 4) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 90 | { |
| 91 | vlib_buffer_t *p0, *p1, *p2, *p3; |
| 92 | ip4_header_t *ip0, *ip1, *ip2, *ip3; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 93 | ip_lookup_next_t next0, next1, next2, next3; |
| 94 | const load_balance_t *lb0, *lb1, *lb2, *lb3; |
| 95 | ip4_fib_mtrie_t *mtrie0, *mtrie1, *mtrie2, *mtrie3; |
| 96 | ip4_fib_mtrie_leaf_t leaf0, leaf1, leaf2, leaf3; |
| 97 | ip4_address_t *dst_addr0, *dst_addr1, *dst_addr2, *dst_addr3; |
Neale Ranns | 340690e | 2017-03-22 13:27:53 -0700 | [diff] [blame] | 98 | u32 pi0, fib_index0, lb_index0; |
| 99 | u32 pi1, fib_index1, lb_index1; |
| 100 | u32 pi2, fib_index2, lb_index2; |
| 101 | u32 pi3, fib_index3, lb_index3; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 102 | flow_hash_config_t flow_hash_config0, flow_hash_config1; |
| 103 | flow_hash_config_t flow_hash_config2, flow_hash_config3; |
| 104 | u32 hash_c0, hash_c1, hash_c2, hash_c3; |
Dave Barach | 670909e | 2016-10-18 15:25:35 -0400 | [diff] [blame] | 105 | const dpo_id_t *dpo0, *dpo1, *dpo2, *dpo3; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 106 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 107 | /* Prefetch next iteration. */ |
| 108 | { |
| 109 | vlib_buffer_t *p4, *p5, *p6, *p7; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 110 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 111 | p4 = vlib_get_buffer (vm, from[4]); |
| 112 | p5 = vlib_get_buffer (vm, from[5]); |
| 113 | p6 = vlib_get_buffer (vm, from[6]); |
| 114 | p7 = vlib_get_buffer (vm, from[7]); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 115 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 116 | vlib_prefetch_buffer_header (p4, LOAD); |
| 117 | vlib_prefetch_buffer_header (p5, LOAD); |
| 118 | vlib_prefetch_buffer_header (p6, LOAD); |
| 119 | vlib_prefetch_buffer_header (p7, LOAD); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 120 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 121 | CLIB_PREFETCH (p4->data, sizeof (ip0[0]), LOAD); |
| 122 | CLIB_PREFETCH (p5->data, sizeof (ip0[0]), LOAD); |
| 123 | CLIB_PREFETCH (p6->data, sizeof (ip0[0]), LOAD); |
| 124 | CLIB_PREFETCH (p7->data, sizeof (ip0[0]), LOAD); |
| 125 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 126 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 127 | pi0 = to_next[0] = from[0]; |
| 128 | pi1 = to_next[1] = from[1]; |
| 129 | pi2 = to_next[2] = from[2]; |
| 130 | pi3 = to_next[3] = from[3]; |
Dave Barach | 670909e | 2016-10-18 15:25:35 -0400 | [diff] [blame] | 131 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 132 | from += 4; |
| 133 | to_next += 4; |
| 134 | n_left_to_next -= 4; |
| 135 | n_left_from -= 4; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 136 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 137 | p0 = vlib_get_buffer (vm, pi0); |
| 138 | p1 = vlib_get_buffer (vm, pi1); |
| 139 | p2 = vlib_get_buffer (vm, pi2); |
| 140 | p3 = vlib_get_buffer (vm, pi3); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 141 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 142 | ip0 = vlib_buffer_get_current (p0); |
| 143 | ip1 = vlib_buffer_get_current (p1); |
| 144 | ip2 = vlib_buffer_get_current (p2); |
| 145 | ip3 = vlib_buffer_get_current (p3); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 146 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 147 | dst_addr0 = &ip0->dst_address; |
| 148 | dst_addr1 = &ip1->dst_address; |
| 149 | dst_addr2 = &ip2->dst_address; |
| 150 | dst_addr3 = &ip3->dst_address; |
Damjan Marion | aca64c9 | 2016-04-13 09:48:56 +0200 | [diff] [blame] | 151 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 152 | fib_index0 = |
| 153 | vec_elt (im->fib_index_by_sw_if_index, |
| 154 | vnet_buffer (p0)->sw_if_index[VLIB_RX]); |
| 155 | fib_index1 = |
| 156 | vec_elt (im->fib_index_by_sw_if_index, |
| 157 | vnet_buffer (p1)->sw_if_index[VLIB_RX]); |
| 158 | fib_index2 = |
| 159 | vec_elt (im->fib_index_by_sw_if_index, |
| 160 | vnet_buffer (p2)->sw_if_index[VLIB_RX]); |
| 161 | fib_index3 = |
| 162 | vec_elt (im->fib_index_by_sw_if_index, |
| 163 | vnet_buffer (p3)->sw_if_index[VLIB_RX]); |
| 164 | fib_index0 = |
| 165 | (vnet_buffer (p0)->sw_if_index[VLIB_TX] == |
| 166 | (u32) ~ 0) ? fib_index0 : vnet_buffer (p0)->sw_if_index[VLIB_TX]; |
| 167 | fib_index1 = |
| 168 | (vnet_buffer (p1)->sw_if_index[VLIB_TX] == |
| 169 | (u32) ~ 0) ? fib_index1 : vnet_buffer (p1)->sw_if_index[VLIB_TX]; |
| 170 | fib_index2 = |
| 171 | (vnet_buffer (p2)->sw_if_index[VLIB_TX] == |
| 172 | (u32) ~ 0) ? fib_index2 : vnet_buffer (p2)->sw_if_index[VLIB_TX]; |
| 173 | fib_index3 = |
| 174 | (vnet_buffer (p3)->sw_if_index[VLIB_TX] == |
| 175 | (u32) ~ 0) ? fib_index3 : vnet_buffer (p3)->sw_if_index[VLIB_TX]; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 176 | |
| 177 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 178 | if (!lookup_for_responses_to_locally_received_packets) |
| 179 | { |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 180 | mtrie0 = &ip4_fib_get (fib_index0)->mtrie; |
| 181 | mtrie1 = &ip4_fib_get (fib_index1)->mtrie; |
Dave Barach | 670909e | 2016-10-18 15:25:35 -0400 | [diff] [blame] | 182 | mtrie2 = &ip4_fib_get (fib_index2)->mtrie; |
| 183 | mtrie3 = &ip4_fib_get (fib_index3)->mtrie; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 184 | |
Neale Ranns | 04a75e3 | 2017-03-23 06:46:01 -0700 | [diff] [blame] | 185 | leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, dst_addr0); |
| 186 | leaf1 = ip4_fib_mtrie_lookup_step_one (mtrie1, dst_addr1); |
| 187 | leaf2 = ip4_fib_mtrie_lookup_step_one (mtrie2, dst_addr2); |
| 188 | leaf3 = ip4_fib_mtrie_lookup_step_one (mtrie3, dst_addr3); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 189 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 190 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 191 | if (!lookup_for_responses_to_locally_received_packets) |
| 192 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 193 | leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 2); |
| 194 | leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, dst_addr1, 2); |
| 195 | leaf2 = ip4_fib_mtrie_lookup_step (mtrie2, leaf2, dst_addr2, 2); |
| 196 | leaf3 = ip4_fib_mtrie_lookup_step (mtrie3, leaf3, dst_addr3, 2); |
| 197 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 198 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 199 | if (!lookup_for_responses_to_locally_received_packets) |
| 200 | { |
| 201 | leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 3); |
| 202 | leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, dst_addr1, 3); |
| 203 | leaf2 = ip4_fib_mtrie_lookup_step (mtrie2, leaf2, dst_addr2, 3); |
| 204 | leaf3 = ip4_fib_mtrie_lookup_step (mtrie3, leaf3, dst_addr3, 3); |
| 205 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 206 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 207 | if (lookup_for_responses_to_locally_received_packets) |
| 208 | { |
| 209 | lb_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_RX]; |
| 210 | lb_index1 = vnet_buffer (p1)->ip.adj_index[VLIB_RX]; |
| 211 | lb_index2 = vnet_buffer (p2)->ip.adj_index[VLIB_RX]; |
| 212 | lb_index3 = vnet_buffer (p3)->ip.adj_index[VLIB_RX]; |
| 213 | } |
| 214 | else |
| 215 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 216 | lb_index0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0); |
| 217 | lb_index1 = ip4_fib_mtrie_leaf_get_adj_index (leaf1); |
| 218 | lb_index2 = ip4_fib_mtrie_leaf_get_adj_index (leaf2); |
| 219 | lb_index3 = ip4_fib_mtrie_leaf_get_adj_index (leaf3); |
| 220 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 221 | |
Neale Ranns | 04a75e3 | 2017-03-23 06:46:01 -0700 | [diff] [blame] | 222 | ASSERT (lb_index0 && lb_index1 && lb_index2 && lb_index3); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 223 | lb0 = load_balance_get (lb_index0); |
| 224 | lb1 = load_balance_get (lb_index1); |
Dave Barach | 670909e | 2016-10-18 15:25:35 -0400 | [diff] [blame] | 225 | lb2 = load_balance_get (lb_index2); |
| 226 | lb3 = load_balance_get (lb_index3); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 227 | |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 228 | ASSERT (lb0->lb_n_buckets > 0); |
| 229 | ASSERT (is_pow2 (lb0->lb_n_buckets)); |
| 230 | ASSERT (lb1->lb_n_buckets > 0); |
| 231 | ASSERT (is_pow2 (lb1->lb_n_buckets)); |
| 232 | ASSERT (lb2->lb_n_buckets > 0); |
| 233 | ASSERT (is_pow2 (lb2->lb_n_buckets)); |
| 234 | ASSERT (lb3->lb_n_buckets > 0); |
| 235 | ASSERT (is_pow2 (lb3->lb_n_buckets)); |
| 236 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 237 | /* Use flow hash to compute multipath adjacency. */ |
| 238 | hash_c0 = vnet_buffer (p0)->ip.flow_hash = 0; |
| 239 | hash_c1 = vnet_buffer (p1)->ip.flow_hash = 0; |
| 240 | hash_c2 = vnet_buffer (p2)->ip.flow_hash = 0; |
| 241 | hash_c3 = vnet_buffer (p3)->ip.flow_hash = 0; |
| 242 | if (PREDICT_FALSE (lb0->lb_n_buckets > 1)) |
| 243 | { |
| 244 | flow_hash_config0 = lb0->lb_hash_config; |
| 245 | hash_c0 = vnet_buffer (p0)->ip.flow_hash = |
| 246 | ip4_compute_flow_hash (ip0, flow_hash_config0); |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 247 | dpo0 = |
| 248 | load_balance_get_fwd_bucket (lb0, |
| 249 | (hash_c0 & |
| 250 | (lb0->lb_n_buckets_minus_1))); |
| 251 | } |
| 252 | else |
| 253 | { |
| 254 | dpo0 = load_balance_get_bucket_i (lb0, 0); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 255 | } |
| 256 | if (PREDICT_FALSE (lb1->lb_n_buckets > 1)) |
| 257 | { |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 258 | flow_hash_config1 = lb1->lb_hash_config; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 259 | hash_c1 = vnet_buffer (p1)->ip.flow_hash = |
| 260 | ip4_compute_flow_hash (ip1, flow_hash_config1); |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 261 | dpo1 = |
| 262 | load_balance_get_fwd_bucket (lb1, |
| 263 | (hash_c1 & |
| 264 | (lb1->lb_n_buckets_minus_1))); |
| 265 | } |
| 266 | else |
| 267 | { |
| 268 | dpo1 = load_balance_get_bucket_i (lb1, 0); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 269 | } |
| 270 | if (PREDICT_FALSE (lb2->lb_n_buckets > 1)) |
| 271 | { |
| 272 | flow_hash_config2 = lb2->lb_hash_config; |
| 273 | hash_c2 = vnet_buffer (p2)->ip.flow_hash = |
| 274 | ip4_compute_flow_hash (ip2, flow_hash_config2); |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 275 | dpo2 = |
| 276 | load_balance_get_fwd_bucket (lb2, |
| 277 | (hash_c2 & |
| 278 | (lb2->lb_n_buckets_minus_1))); |
| 279 | } |
| 280 | else |
| 281 | { |
| 282 | dpo2 = load_balance_get_bucket_i (lb2, 0); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 283 | } |
| 284 | if (PREDICT_FALSE (lb3->lb_n_buckets > 1)) |
| 285 | { |
Dave Barach | 670909e | 2016-10-18 15:25:35 -0400 | [diff] [blame] | 286 | flow_hash_config3 = lb3->lb_hash_config; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 287 | hash_c3 = vnet_buffer (p3)->ip.flow_hash = |
| 288 | ip4_compute_flow_hash (ip3, flow_hash_config3); |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 289 | dpo3 = |
| 290 | load_balance_get_fwd_bucket (lb3, |
| 291 | (hash_c3 & |
| 292 | (lb3->lb_n_buckets_minus_1))); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 293 | } |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 294 | else |
| 295 | { |
| 296 | dpo3 = load_balance_get_bucket_i (lb3, 0); |
| 297 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 298 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 299 | next0 = dpo0->dpoi_next_node; |
| 300 | vnet_buffer (p0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index; |
| 301 | next1 = dpo1->dpoi_next_node; |
| 302 | vnet_buffer (p1)->ip.adj_index[VLIB_TX] = dpo1->dpoi_index; |
Dave Barach | 670909e | 2016-10-18 15:25:35 -0400 | [diff] [blame] | 303 | next2 = dpo2->dpoi_next_node; |
| 304 | vnet_buffer (p2)->ip.adj_index[VLIB_TX] = dpo2->dpoi_index; |
| 305 | next3 = dpo3->dpoi_next_node; |
| 306 | vnet_buffer (p3)->ip.adj_index[VLIB_TX] = dpo3->dpoi_index; |
Florin Coras | df9d3bc | 2016-09-05 19:54:17 +0200 | [diff] [blame] | 307 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 308 | vlib_increment_combined_counter |
Damjan Marion | 586afd7 | 2017-04-05 19:18:20 +0200 | [diff] [blame] | 309 | (cm, thread_index, lb_index0, 1, |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 310 | vlib_buffer_length_in_chain (vm, p0)); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 311 | vlib_increment_combined_counter |
Damjan Marion | 586afd7 | 2017-04-05 19:18:20 +0200 | [diff] [blame] | 312 | (cm, thread_index, lb_index1, 1, |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 313 | vlib_buffer_length_in_chain (vm, p1)); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 314 | vlib_increment_combined_counter |
Damjan Marion | 586afd7 | 2017-04-05 19:18:20 +0200 | [diff] [blame] | 315 | (cm, thread_index, lb_index2, 1, |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 316 | vlib_buffer_length_in_chain (vm, p2)); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 317 | vlib_increment_combined_counter |
Damjan Marion | 586afd7 | 2017-04-05 19:18:20 +0200 | [diff] [blame] | 318 | (cm, thread_index, lb_index3, 1, |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 319 | vlib_buffer_length_in_chain (vm, p3)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 320 | |
Dave Barach | 670909e | 2016-10-18 15:25:35 -0400 | [diff] [blame] | 321 | vlib_validate_buffer_enqueue_x4 (vm, node, next, |
| 322 | to_next, n_left_to_next, |
| 323 | pi0, pi1, pi2, pi3, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 324 | next0, next1, next2, next3); |
| 325 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 326 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 327 | while (n_left_from > 0 && n_left_to_next > 0) |
| 328 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 329 | vlib_buffer_t *p0; |
| 330 | ip4_header_t *ip0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 331 | ip_lookup_next_t next0; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 332 | const load_balance_t *lb0; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 333 | ip4_fib_mtrie_t *mtrie0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 334 | ip4_fib_mtrie_leaf_t leaf0; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 335 | ip4_address_t *dst_addr0; |
Neale Ranns | 340690e | 2017-03-22 13:27:53 -0700 | [diff] [blame] | 336 | u32 pi0, fib_index0, lbi0; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 337 | flow_hash_config_t flow_hash_config0; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 338 | const dpo_id_t *dpo0; |
| 339 | u32 hash_c0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 340 | |
| 341 | pi0 = from[0]; |
| 342 | to_next[0] = pi0; |
| 343 | |
| 344 | p0 = vlib_get_buffer (vm, pi0); |
| 345 | |
| 346 | ip0 = vlib_buffer_get_current (p0); |
| 347 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 348 | dst_addr0 = &ip0->dst_address; |
Damjan Marion | aca64c9 | 2016-04-13 09:48:56 +0200 | [diff] [blame] | 349 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 350 | fib_index0 = |
| 351 | vec_elt (im->fib_index_by_sw_if_index, |
| 352 | vnet_buffer (p0)->sw_if_index[VLIB_RX]); |
| 353 | fib_index0 = |
| 354 | (vnet_buffer (p0)->sw_if_index[VLIB_TX] == |
| 355 | (u32) ~ 0) ? fib_index0 : vnet_buffer (p0)->sw_if_index[VLIB_TX]; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 356 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 357 | if (!lookup_for_responses_to_locally_received_packets) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 358 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 359 | mtrie0 = &ip4_fib_get (fib_index0)->mtrie; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 360 | |
Neale Ranns | 04a75e3 | 2017-03-23 06:46:01 -0700 | [diff] [blame] | 361 | leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, dst_addr0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 362 | } |
| 363 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 364 | if (!lookup_for_responses_to_locally_received_packets) |
Damjan Marion | aca64c9 | 2016-04-13 09:48:56 +0200 | [diff] [blame] | 365 | leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 2); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 366 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 367 | if (!lookup_for_responses_to_locally_received_packets) |
Damjan Marion | aca64c9 | 2016-04-13 09:48:56 +0200 | [diff] [blame] | 368 | leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 3); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 369 | |
| 370 | if (lookup_for_responses_to_locally_received_packets) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 371 | lbi0 = vnet_buffer (p0)->ip.adj_index[VLIB_RX]; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 372 | else |
| 373 | { |
| 374 | /* Handle default route. */ |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 375 | lbi0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 376 | } |
| 377 | |
Neale Ranns | 04a75e3 | 2017-03-23 06:46:01 -0700 | [diff] [blame] | 378 | ASSERT (lbi0); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 379 | lb0 = load_balance_get (lbi0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 380 | |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 381 | ASSERT (lb0->lb_n_buckets > 0); |
| 382 | ASSERT (is_pow2 (lb0->lb_n_buckets)); |
| 383 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 384 | /* Use flow hash to compute multipath adjacency. */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 385 | hash_c0 = vnet_buffer (p0)->ip.flow_hash = 0; |
| 386 | if (PREDICT_FALSE (lb0->lb_n_buckets > 1)) |
| 387 | { |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 388 | flow_hash_config0 = lb0->lb_hash_config; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 389 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 390 | hash_c0 = vnet_buffer (p0)->ip.flow_hash = |
| 391 | ip4_compute_flow_hash (ip0, flow_hash_config0); |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 392 | dpo0 = |
| 393 | load_balance_get_fwd_bucket (lb0, |
| 394 | (hash_c0 & |
| 395 | (lb0->lb_n_buckets_minus_1))); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 396 | } |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 397 | else |
| 398 | { |
| 399 | dpo0 = load_balance_get_bucket_i (lb0, 0); |
| 400 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 401 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 402 | next0 = dpo0->dpoi_next_node; |
| 403 | vnet_buffer (p0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index; |
Florin Coras | df9d3bc | 2016-09-05 19:54:17 +0200 | [diff] [blame] | 404 | |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 405 | vlib_increment_combined_counter (cm, thread_index, lbi0, 1, |
| 406 | vlib_buffer_length_in_chain (vm, |
| 407 | p0)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 408 | |
| 409 | from += 1; |
| 410 | to_next += 1; |
| 411 | n_left_to_next -= 1; |
| 412 | n_left_from -= 1; |
| 413 | |
| 414 | if (PREDICT_FALSE (next0 != next)) |
| 415 | { |
| 416 | n_left_to_next += 1; |
| 417 | vlib_put_next_frame (vm, node, next, n_left_to_next); |
| 418 | next = next0; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 419 | vlib_get_next_frame (vm, node, next, to_next, n_left_to_next); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 420 | to_next[0] = pi0; |
| 421 | to_next += 1; |
| 422 | n_left_to_next -= 1; |
| 423 | } |
| 424 | } |
| 425 | |
| 426 | vlib_put_next_frame (vm, node, next, n_left_to_next); |
| 427 | } |
| 428 | |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 429 | if (node->flags & VLIB_NODE_FLAG_TRACE) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 430 | ip4_forward_next_trace (vm, node, frame, VLIB_TX); |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 431 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 432 | return frame->n_vectors; |
| 433 | } |
| 434 | |
Chris Luke | 8e5b041 | 2016-07-26 13:06:10 -0400 | [diff] [blame] | 435 | /** @brief IPv4 lookup node. |
Dave Barach | 9770e20 | 2016-07-06 10:29:27 -0400 | [diff] [blame] | 436 | @node ip4-lookup |
| 437 | |
| 438 | This is the main IPv4 lookup dispatch node. |
| 439 | |
| 440 | @param vm vlib_main_t corresponding to the current thread |
| 441 | @param node vlib_node_runtime_t |
| 442 | @param frame vlib_frame_t whose contents should be dispatched |
| 443 | |
| 444 | @par Graph mechanics: buffer metadata, next index usage |
| 445 | |
| 446 | @em Uses: |
| 447 | - <code>vnet_buffer(b)->sw_if_index[VLIB_RX]</code> |
| 448 | - Indicates the @c sw_if_index value of the interface that the |
| 449 | packet was received on. |
| 450 | - <code>vnet_buffer(b)->sw_if_index[VLIB_TX]</code> |
| 451 | - When the value is @c ~0 then the node performs a longest prefix |
| 452 | match (LPM) for the packet destination address in the FIB attached |
| 453 | to the receive interface. |
| 454 | - Otherwise perform LPM for the packet destination address in the |
| 455 | indicated FIB. In this case <code>[VLIB_TX]</code> is a FIB index |
| 456 | value (0, 1, ...) and not a VRF id. |
| 457 | |
| 458 | @em Sets: |
| 459 | - <code>vnet_buffer(b)->ip.adj_index[VLIB_TX]</code> |
| 460 | - The lookup result adjacency index. |
| 461 | |
| 462 | <em>Next Index:</em> |
| 463 | - Dispatches the packet to the node index found in |
| 464 | ip_adjacency_t @c adj->lookup_next_index |
| 465 | (where @c adj is the lookup result adjacency). |
| 466 | */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 467 | static uword |
| 468 | ip4_lookup (vlib_main_t * vm, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 469 | vlib_node_runtime_t * node, vlib_frame_t * frame) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 470 | { |
Damjan Marion | aca64c9 | 2016-04-13 09:48:56 +0200 | [diff] [blame] | 471 | return ip4_lookup_inline (vm, node, frame, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 472 | /* lookup_for_responses_to_locally_received_packets */ |
| 473 | 0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 474 | |
| 475 | } |
| 476 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 477 | static u8 *format_ip4_lookup_trace (u8 * s, va_list * args); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 478 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 479 | VLIB_REGISTER_NODE (ip4_lookup_node) = |
| 480 | { |
| 481 | .function = ip4_lookup,.name = "ip4-lookup",.vector_size = |
| 482 | sizeof (u32),.format_trace = format_ip4_lookup_trace,.n_next_nodes = |
| 483 | IP_LOOKUP_N_NEXT,.next_nodes = IP4_LOOKUP_NEXT_NODES,}; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 484 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 485 | VLIB_NODE_FUNCTION_MULTIARCH (ip4_lookup_node, ip4_lookup); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 486 | |
| 487 | always_inline uword |
| 488 | ip4_load_balance (vlib_main_t * vm, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 489 | vlib_node_runtime_t * node, vlib_frame_t * frame) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 490 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 491 | vlib_combined_counter_main_t *cm = &load_balance_main.lbm_via_counters; |
| 492 | u32 n_left_from, n_left_to_next, *from, *to_next; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 493 | ip_lookup_next_t next; |
Damjan Marion | 586afd7 | 2017-04-05 19:18:20 +0200 | [diff] [blame] | 494 | u32 thread_index = vlib_get_thread_index (); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 495 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 496 | from = vlib_frame_vector_args (frame); |
| 497 | n_left_from = frame->n_vectors; |
| 498 | next = node->cached_next_index; |
| 499 | |
| 500 | if (node->flags & VLIB_NODE_FLAG_TRACE) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 501 | ip4_forward_next_trace (vm, node, frame, VLIB_TX); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 502 | |
| 503 | while (n_left_from > 0) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 504 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 505 | 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] | 506 | |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 507 | |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 508 | while (n_left_from >= 4 && n_left_to_next >= 2) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 509 | { |
| 510 | ip_lookup_next_t next0, next1; |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 511 | const load_balance_t *lb0, *lb1; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 512 | vlib_buffer_t *p0, *p1; |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 513 | u32 pi0, lbi0, hc0, pi1, lbi1, hc1; |
| 514 | const ip4_header_t *ip0, *ip1; |
| 515 | const dpo_id_t *dpo0, *dpo1; |
| 516 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 517 | /* Prefetch next iteration. */ |
| 518 | { |
| 519 | vlib_buffer_t *p2, *p3; |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 520 | |
| 521 | p2 = vlib_get_buffer (vm, from[2]); |
| 522 | p3 = vlib_get_buffer (vm, from[3]); |
| 523 | |
| 524 | vlib_prefetch_buffer_header (p2, STORE); |
| 525 | vlib_prefetch_buffer_header (p3, STORE); |
| 526 | |
| 527 | CLIB_PREFETCH (p2->data, sizeof (ip0[0]), STORE); |
| 528 | CLIB_PREFETCH (p3->data, sizeof (ip0[0]), STORE); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 529 | } |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 530 | |
| 531 | pi0 = to_next[0] = from[0]; |
| 532 | pi1 = to_next[1] = from[1]; |
| 533 | |
| 534 | from += 2; |
| 535 | n_left_from -= 2; |
| 536 | to_next += 2; |
| 537 | n_left_to_next -= 2; |
| 538 | |
| 539 | p0 = vlib_get_buffer (vm, pi0); |
| 540 | p1 = vlib_get_buffer (vm, pi1); |
| 541 | |
| 542 | ip0 = vlib_buffer_get_current (p0); |
| 543 | ip1 = vlib_buffer_get_current (p1); |
| 544 | lbi0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX]; |
| 545 | lbi1 = vnet_buffer (p1)->ip.adj_index[VLIB_TX]; |
| 546 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 547 | lb0 = load_balance_get (lbi0); |
| 548 | lb1 = load_balance_get (lbi1); |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 549 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 550 | /* |
| 551 | * this node is for via FIBs we can re-use the hash value from the |
| 552 | * to node if present. |
| 553 | * We don't want to use the same hash value at each level in the recursion |
| 554 | * graph as that would lead to polarisation |
| 555 | */ |
AkshayaNadahalli | 153b871 | 2017-03-06 18:22:29 +0000 | [diff] [blame] | 556 | hc0 = hc1 = 0; |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 557 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 558 | if (PREDICT_FALSE (lb0->lb_n_buckets > 1)) |
| 559 | { |
| 560 | if (PREDICT_TRUE (vnet_buffer (p0)->ip.flow_hash)) |
| 561 | { |
| 562 | hc0 = vnet_buffer (p0)->ip.flow_hash = |
| 563 | vnet_buffer (p0)->ip.flow_hash >> 1; |
| 564 | } |
| 565 | else |
| 566 | { |
| 567 | hc0 = vnet_buffer (p0)->ip.flow_hash = |
AkshayaNadahalli | 153b871 | 2017-03-06 18:22:29 +0000 | [diff] [blame] | 568 | ip4_compute_flow_hash (ip0, lb0->lb_hash_config); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 569 | } |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 570 | dpo0 = load_balance_get_fwd_bucket |
| 571 | (lb0, (hc0 & (lb0->lb_n_buckets_minus_1))); |
| 572 | } |
| 573 | else |
| 574 | { |
| 575 | dpo0 = load_balance_get_bucket_i (lb0, 0); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 576 | } |
| 577 | if (PREDICT_FALSE (lb1->lb_n_buckets > 1)) |
| 578 | { |
| 579 | if (PREDICT_TRUE (vnet_buffer (p1)->ip.flow_hash)) |
| 580 | { |
| 581 | hc1 = vnet_buffer (p1)->ip.flow_hash = |
| 582 | vnet_buffer (p1)->ip.flow_hash >> 1; |
| 583 | } |
| 584 | else |
| 585 | { |
| 586 | hc1 = vnet_buffer (p1)->ip.flow_hash = |
AkshayaNadahalli | 153b871 | 2017-03-06 18:22:29 +0000 | [diff] [blame] | 587 | ip4_compute_flow_hash (ip1, lb1->lb_hash_config); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 588 | } |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 589 | dpo1 = load_balance_get_fwd_bucket |
| 590 | (lb1, (hc1 & (lb1->lb_n_buckets_minus_1))); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 591 | } |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 592 | else |
| 593 | { |
| 594 | dpo1 = load_balance_get_bucket_i (lb1, 0); |
| 595 | } |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 596 | |
| 597 | next0 = dpo0->dpoi_next_node; |
| 598 | next1 = dpo1->dpoi_next_node; |
| 599 | |
| 600 | vnet_buffer (p0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index; |
| 601 | vnet_buffer (p1)->ip.adj_index[VLIB_TX] = dpo1->dpoi_index; |
| 602 | |
| 603 | vlib_increment_combined_counter |
Damjan Marion | 586afd7 | 2017-04-05 19:18:20 +0200 | [diff] [blame] | 604 | (cm, thread_index, lbi0, 1, vlib_buffer_length_in_chain (vm, p0)); |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 605 | vlib_increment_combined_counter |
Damjan Marion | 586afd7 | 2017-04-05 19:18:20 +0200 | [diff] [blame] | 606 | (cm, thread_index, lbi1, 1, vlib_buffer_length_in_chain (vm, p1)); |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 607 | |
| 608 | vlib_validate_buffer_enqueue_x2 (vm, node, next, |
| 609 | to_next, n_left_to_next, |
| 610 | pi0, pi1, next0, next1); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 611 | } |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 612 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 613 | while (n_left_from > 0 && n_left_to_next > 0) |
| 614 | { |
| 615 | ip_lookup_next_t next0; |
| 616 | const load_balance_t *lb0; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 617 | vlib_buffer_t *p0; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 618 | u32 pi0, lbi0, hc0; |
| 619 | const ip4_header_t *ip0; |
| 620 | const dpo_id_t *dpo0; |
| 621 | |
| 622 | pi0 = from[0]; |
| 623 | to_next[0] = pi0; |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 624 | from += 1; |
| 625 | to_next += 1; |
| 626 | n_left_to_next -= 1; |
| 627 | n_left_from -= 1; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 628 | |
| 629 | p0 = vlib_get_buffer (vm, pi0); |
| 630 | |
| 631 | ip0 = vlib_buffer_get_current (p0); |
| 632 | lbi0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX]; |
| 633 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 634 | lb0 = load_balance_get (lbi0); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 635 | |
AkshayaNadahalli | 153b871 | 2017-03-06 18:22:29 +0000 | [diff] [blame] | 636 | hc0 = 0; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 637 | if (PREDICT_FALSE (lb0->lb_n_buckets > 1)) |
| 638 | { |
| 639 | if (PREDICT_TRUE (vnet_buffer (p0)->ip.flow_hash)) |
| 640 | { |
| 641 | hc0 = vnet_buffer (p0)->ip.flow_hash = |
| 642 | vnet_buffer (p0)->ip.flow_hash >> 1; |
| 643 | } |
| 644 | else |
| 645 | { |
| 646 | hc0 = vnet_buffer (p0)->ip.flow_hash = |
AkshayaNadahalli | 153b871 | 2017-03-06 18:22:29 +0000 | [diff] [blame] | 647 | ip4_compute_flow_hash (ip0, lb0->lb_hash_config); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 648 | } |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 649 | dpo0 = load_balance_get_fwd_bucket |
| 650 | (lb0, (hc0 & (lb0->lb_n_buckets_minus_1))); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 651 | } |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 652 | else |
| 653 | { |
| 654 | dpo0 = load_balance_get_bucket_i (lb0, 0); |
| 655 | } |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 656 | |
| 657 | next0 = dpo0->dpoi_next_node; |
| 658 | vnet_buffer (p0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index; |
| 659 | |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 660 | vlib_increment_combined_counter |
Damjan Marion | 586afd7 | 2017-04-05 19:18:20 +0200 | [diff] [blame] | 661 | (cm, thread_index, lbi0, 1, vlib_buffer_length_in_chain (vm, p0)); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 662 | |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 663 | vlib_validate_buffer_enqueue_x1 (vm, node, next, |
| 664 | to_next, n_left_to_next, |
| 665 | pi0, next0); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 666 | } |
| 667 | |
| 668 | vlib_put_next_frame (vm, node, next, n_left_to_next); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 669 | } |
| 670 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 671 | return frame->n_vectors; |
| 672 | } |
| 673 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 674 | VLIB_REGISTER_NODE (ip4_load_balance_node) = |
| 675 | { |
| 676 | .function = ip4_load_balance,.name = "ip4-load-balance",.vector_size = |
| 677 | sizeof (u32),.sibling_of = "ip4-lookup",.format_trace = |
| 678 | format_ip4_lookup_trace,}; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 679 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 680 | VLIB_NODE_FUNCTION_MULTIARCH (ip4_load_balance_node, ip4_load_balance); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 681 | |
| 682 | /* get first interface address */ |
| 683 | ip4_address_t * |
| 684 | ip4_interface_first_address (ip4_main_t * im, u32 sw_if_index, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 685 | ip_interface_address_t ** result_ia) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 686 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 687 | ip_lookup_main_t *lm = &im->lookup_main; |
| 688 | ip_interface_address_t *ia = 0; |
| 689 | ip4_address_t *result = 0; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 690 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 691 | /* *INDENT-OFF* */ |
| 692 | foreach_ip_interface_address |
| 693 | (lm, ia, sw_if_index, |
| 694 | 1 /* honor unnumbered */ , |
| 695 | ({ |
| 696 | ip4_address_t * a = |
| 697 | ip_interface_address_get_address (lm, ia); |
| 698 | result = a; |
| 699 | break; |
| 700 | })); |
| 701 | /* *INDENT-OFF* */ |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 702 | if (result_ia) |
| 703 | *result_ia = result ? ia : 0; |
| 704 | return result; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 705 | } |
| 706 | |
| 707 | static void |
| 708 | ip4_add_interface_routes (u32 sw_if_index, |
| 709 | ip4_main_t * im, u32 fib_index, |
| 710 | ip_interface_address_t * a) |
| 711 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 712 | ip_lookup_main_t *lm = &im->lookup_main; |
| 713 | ip4_address_t *address = ip_interface_address_get_address (lm, a); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 714 | fib_prefix_t pfx = { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 715 | .fp_len = a->address_length, |
| 716 | .fp_proto = FIB_PROTOCOL_IP4, |
| 717 | .fp_addr.ip4 = *address, |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 718 | }; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 719 | |
Neale Ranns | 9a69a60 | 2017-03-26 10:56:33 -0700 | [diff] [blame] | 720 | if (pfx.fp_len <= 30) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 721 | { |
Neale Ranns | 9a69a60 | 2017-03-26 10:56:33 -0700 | [diff] [blame] | 722 | /* a /30 or shorter - add a glean for the network address */ |
Neale Ranns | 7a27274 | 2017-05-30 02:08:14 -0700 | [diff] [blame] | 723 | fib_table_entry_update_one_path (fib_index, &pfx, |
| 724 | FIB_SOURCE_INTERFACE, |
| 725 | (FIB_ENTRY_FLAG_CONNECTED | |
| 726 | FIB_ENTRY_FLAG_ATTACHED), |
Neale Ranns | da78f95 | 2017-05-24 09:15:43 -0700 | [diff] [blame] | 727 | DPO_PROTO_IP4, |
Neale Ranns | 7a27274 | 2017-05-30 02:08:14 -0700 | [diff] [blame] | 728 | /* No next-hop address */ |
| 729 | NULL, |
| 730 | sw_if_index, |
| 731 | // invalid FIB index |
| 732 | ~0, |
| 733 | 1, |
| 734 | // no out-label stack |
| 735 | NULL, |
| 736 | FIB_ROUTE_PATH_FLAG_NONE); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 737 | |
Neale Ranns | 9a69a60 | 2017-03-26 10:56:33 -0700 | [diff] [blame] | 738 | /* Add the two broadcast addresses as drop */ |
| 739 | fib_prefix_t net_pfx = { |
| 740 | .fp_len = 32, |
| 741 | .fp_proto = FIB_PROTOCOL_IP4, |
| 742 | .fp_addr.ip4.as_u32 = address->as_u32 & im->fib_masks[pfx.fp_len], |
| 743 | }; |
| 744 | if (net_pfx.fp_addr.ip4.as_u32 != pfx.fp_addr.ip4.as_u32) |
| 745 | fib_table_entry_special_add(fib_index, |
| 746 | &net_pfx, |
| 747 | FIB_SOURCE_INTERFACE, |
| 748 | (FIB_ENTRY_FLAG_DROP | |
Neale Ranns | a055830 | 2017-04-13 00:44:52 -0700 | [diff] [blame] | 749 | FIB_ENTRY_FLAG_LOOSE_URPF_EXEMPT)); |
Neale Ranns | 9a69a60 | 2017-03-26 10:56:33 -0700 | [diff] [blame] | 750 | net_pfx.fp_addr.ip4.as_u32 |= ~im->fib_masks[pfx.fp_len]; |
| 751 | if (net_pfx.fp_addr.ip4.as_u32 != pfx.fp_addr.ip4.as_u32) |
| 752 | fib_table_entry_special_add(fib_index, |
| 753 | &net_pfx, |
| 754 | FIB_SOURCE_INTERFACE, |
| 755 | (FIB_ENTRY_FLAG_DROP | |
Neale Ranns | a055830 | 2017-04-13 00:44:52 -0700 | [diff] [blame] | 756 | FIB_ENTRY_FLAG_LOOSE_URPF_EXEMPT)); |
Neale Ranns | 9a69a60 | 2017-03-26 10:56:33 -0700 | [diff] [blame] | 757 | } |
| 758 | else if (pfx.fp_len == 31) |
| 759 | { |
| 760 | u32 mask = clib_host_to_net_u32(1); |
| 761 | fib_prefix_t net_pfx = pfx; |
| 762 | |
| 763 | net_pfx.fp_len = 32; |
| 764 | net_pfx.fp_addr.ip4.as_u32 ^= mask; |
| 765 | |
| 766 | /* a /31 - add the other end as an attached host */ |
| 767 | fib_table_entry_update_one_path (fib_index, &net_pfx, |
| 768 | FIB_SOURCE_INTERFACE, |
| 769 | (FIB_ENTRY_FLAG_ATTACHED), |
Neale Ranns | da78f95 | 2017-05-24 09:15:43 -0700 | [diff] [blame] | 770 | DPO_PROTO_IP4, |
Neale Ranns | 9a69a60 | 2017-03-26 10:56:33 -0700 | [diff] [blame] | 771 | &net_pfx.fp_addr, |
| 772 | sw_if_index, |
| 773 | // invalid FIB index |
| 774 | ~0, |
| 775 | 1, |
| 776 | NULL, |
| 777 | FIB_ROUTE_PATH_FLAG_NONE); |
| 778 | } |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 779 | pfx.fp_len = 32; |
| 780 | |
| 781 | 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] | 782 | { |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 783 | u32 classify_table_index = |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 784 | lm->classify_table_index_by_sw_if_index[sw_if_index]; |
| 785 | if (classify_table_index != (u32) ~ 0) |
| 786 | { |
| 787 | dpo_id_t dpo = DPO_INVALID; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 788 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 789 | dpo_set (&dpo, |
| 790 | DPO_CLASSIFY, |
| 791 | DPO_PROTO_IP4, |
| 792 | classify_dpo_create (DPO_PROTO_IP4, classify_table_index)); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 793 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 794 | fib_table_entry_special_dpo_add (fib_index, |
| 795 | &pfx, |
| 796 | FIB_SOURCE_CLASSIFY, |
| 797 | FIB_ENTRY_FLAG_NONE, &dpo); |
| 798 | dpo_reset (&dpo); |
| 799 | } |
| 800 | } |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 801 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 802 | fib_table_entry_update_one_path (fib_index, &pfx, |
| 803 | FIB_SOURCE_INTERFACE, |
| 804 | (FIB_ENTRY_FLAG_CONNECTED | |
| 805 | FIB_ENTRY_FLAG_LOCAL), |
Neale Ranns | da78f95 | 2017-05-24 09:15:43 -0700 | [diff] [blame] | 806 | DPO_PROTO_IP4, |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 807 | &pfx.fp_addr, |
| 808 | sw_if_index, |
| 809 | // invalid FIB index |
| 810 | ~0, |
| 811 | 1, NULL, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 812 | FIB_ROUTE_PATH_FLAG_NONE); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 813 | } |
| 814 | |
| 815 | static void |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 816 | ip4_del_interface_routes (ip4_main_t * im, |
| 817 | u32 fib_index, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 818 | ip4_address_t * address, u32 address_length) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 819 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 820 | fib_prefix_t pfx = { |
| 821 | .fp_len = address_length, |
| 822 | .fp_proto = FIB_PROTOCOL_IP4, |
| 823 | .fp_addr.ip4 = *address, |
| 824 | }; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 825 | |
Neale Ranns | 9a69a60 | 2017-03-26 10:56:33 -0700 | [diff] [blame] | 826 | if (pfx.fp_len <= 30) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 827 | { |
Neale Ranns | 9a69a60 | 2017-03-26 10:56:33 -0700 | [diff] [blame] | 828 | fib_prefix_t net_pfx = { |
| 829 | .fp_len = 32, |
| 830 | .fp_proto = FIB_PROTOCOL_IP4, |
| 831 | .fp_addr.ip4.as_u32 = address->as_u32 & im->fib_masks[pfx.fp_len], |
| 832 | }; |
| 833 | if (net_pfx.fp_addr.ip4.as_u32 != pfx.fp_addr.ip4.as_u32) |
| 834 | fib_table_entry_special_remove(fib_index, |
| 835 | &net_pfx, |
| 836 | FIB_SOURCE_INTERFACE); |
| 837 | net_pfx.fp_addr.ip4.as_u32 |= ~im->fib_masks[pfx.fp_len]; |
| 838 | if (net_pfx.fp_addr.ip4.as_u32 != pfx.fp_addr.ip4.as_u32) |
| 839 | fib_table_entry_special_remove(fib_index, |
| 840 | &net_pfx, |
| 841 | FIB_SOURCE_INTERFACE); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 842 | fib_table_entry_delete (fib_index, &pfx, FIB_SOURCE_INTERFACE); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 843 | } |
Neale Ranns | 9a69a60 | 2017-03-26 10:56:33 -0700 | [diff] [blame] | 844 | else if (pfx.fp_len == 31) |
| 845 | { |
| 846 | u32 mask = clib_host_to_net_u32(1); |
| 847 | fib_prefix_t net_pfx = pfx; |
| 848 | |
| 849 | net_pfx.fp_len = 32; |
| 850 | net_pfx.fp_addr.ip4.as_u32 ^= mask; |
| 851 | |
| 852 | fib_table_entry_delete (fib_index, &net_pfx, FIB_SOURCE_INTERFACE); |
| 853 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 854 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 855 | pfx.fp_len = 32; |
| 856 | fib_table_entry_delete (fib_index, &pfx, FIB_SOURCE_INTERFACE); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 857 | } |
| 858 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 859 | void |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 860 | ip4_sw_interface_enable_disable (u32 sw_if_index, u32 is_enable) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 861 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 862 | ip4_main_t *im = &ip4_main; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 863 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 864 | vec_validate_init_empty (im->ip_enabled_by_sw_if_index, sw_if_index, 0); |
| 865 | |
| 866 | /* |
| 867 | * enable/disable only on the 1<->0 transition |
| 868 | */ |
| 869 | if (is_enable) |
| 870 | { |
| 871 | if (1 != ++im->ip_enabled_by_sw_if_index[sw_if_index]) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 872 | return; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 873 | } |
| 874 | else |
| 875 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 876 | ASSERT (im->ip_enabled_by_sw_if_index[sw_if_index] > 0); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 877 | if (0 != --im->ip_enabled_by_sw_if_index[sw_if_index]) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 878 | return; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 879 | } |
Damjan Marion | 4d48993 | 2016-12-09 03:21:27 -0800 | [diff] [blame] | 880 | vnet_feature_enable_disable ("ip4-unicast", "ip4-drop", sw_if_index, |
| 881 | !is_enable, 0, 0); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 882 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 883 | |
Neale Ranns | 180279b | 2017-03-16 15:49:09 -0400 | [diff] [blame] | 884 | vnet_feature_enable_disable ("ip4-multicast", "ip4-drop", |
| 885 | sw_if_index, !is_enable, 0, 0); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 886 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 887 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 888 | static clib_error_t * |
| 889 | ip4_add_del_interface_address_internal (vlib_main_t * vm, |
| 890 | u32 sw_if_index, |
| 891 | ip4_address_t * address, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 892 | u32 address_length, u32 is_del) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 893 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 894 | vnet_main_t *vnm = vnet_get_main (); |
| 895 | ip4_main_t *im = &ip4_main; |
| 896 | ip_lookup_main_t *lm = &im->lookup_main; |
| 897 | clib_error_t *error = 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 898 | u32 if_address_index, elts_before; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 899 | ip4_address_fib_t ip4_af, *addr_fib = 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 900 | |
Pavel Kotucek | 5780898 | 2017-08-02 08:20:19 +0200 | [diff] [blame] | 901 | /* local0 interface doesn't support IP addressing */ |
| 902 | if (sw_if_index == 0) |
| 903 | { |
| 904 | return |
| 905 | clib_error_create ("local0 interface doesn't support IP addressing"); |
| 906 | } |
| 907 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 908 | vec_validate (im->fib_index_by_sw_if_index, sw_if_index); |
| 909 | ip4_addr_fib_init (&ip4_af, address, |
| 910 | vec_elt (im->fib_index_by_sw_if_index, sw_if_index)); |
| 911 | vec_add1 (addr_fib, ip4_af); |
| 912 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 913 | /* FIXME-LATER |
| 914 | * there is no support for adj-fib handling in the presence of overlapping |
| 915 | * subnets on interfaces. Easy fix - disallow overlapping subnets, like |
| 916 | * most routers do. |
| 917 | */ |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 918 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 919 | if (!is_del) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 920 | { |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 921 | /* When adding an address check that it does not conflict |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 922 | with an existing address. */ |
| 923 | ip_interface_address_t *ia; |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 924 | foreach_ip_interface_address |
| 925 | (&im->lookup_main, ia, sw_if_index, |
| 926 | 0 /* honor unnumbered */ , |
| 927 | ({ |
| 928 | ip4_address_t * x = |
| 929 | ip_interface_address_get_address |
| 930 | (&im->lookup_main, ia); |
| 931 | if (ip4_destination_matches_route |
| 932 | (im, address, x, ia->address_length) || |
| 933 | ip4_destination_matches_route (im, |
| 934 | x, |
| 935 | address, |
| 936 | address_length)) |
| 937 | return |
| 938 | clib_error_create |
| 939 | ("failed to add %U which conflicts with %U for interface %U", |
| 940 | format_ip4_address_and_length, address, |
| 941 | address_length, |
| 942 | format_ip4_address_and_length, x, |
| 943 | ia->address_length, |
| 944 | format_vnet_sw_if_index_name, vnm, |
| 945 | sw_if_index); |
| 946 | })); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 947 | } |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 948 | /* *INDENT-ON* */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 949 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 950 | elts_before = pool_elts (lm->if_address_pool); |
| 951 | |
| 952 | error = ip_interface_address_add_del |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 953 | (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] | 954 | if (error) |
| 955 | goto done; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 956 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 957 | ip4_sw_interface_enable_disable (sw_if_index, !is_del); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 958 | |
| 959 | if (is_del) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 960 | ip4_del_interface_routes (im, ip4_af.fib_index, address, address_length); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 961 | else |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 962 | ip4_add_interface_routes (sw_if_index, |
| 963 | im, ip4_af.fib_index, |
| 964 | pool_elt_at_index |
| 965 | (lm->if_address_pool, if_address_index)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 966 | |
| 967 | /* If pool did not grow/shrink: add duplicate address. */ |
| 968 | if (elts_before != pool_elts (lm->if_address_pool)) |
| 969 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 970 | ip4_add_del_interface_address_callback_t *cb; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 971 | vec_foreach (cb, im->add_del_interface_address_callbacks) |
| 972 | cb->function (im, cb->function_opaque, sw_if_index, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 973 | address, address_length, if_address_index, is_del); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 974 | } |
| 975 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 976 | done: |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 977 | vec_free (addr_fib); |
| 978 | return error; |
| 979 | } |
| 980 | |
| 981 | clib_error_t * |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 982 | ip4_add_del_interface_address (vlib_main_t * vm, |
| 983 | u32 sw_if_index, |
| 984 | ip4_address_t * address, |
| 985 | u32 address_length, u32 is_del) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 986 | { |
| 987 | return ip4_add_del_interface_address_internal |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 988 | (vm, sw_if_index, address, address_length, is_del); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 989 | } |
| 990 | |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 991 | /* Built-in ip4 unicast rx feature path definition */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 992 | /* *INDENT-OFF* */ |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 993 | VNET_FEATURE_ARC_INIT (ip4_unicast, static) = |
| 994 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 995 | .arc_name = "ip4-unicast", |
Damjan Marion | 892e076 | 2016-12-09 18:52:05 +0100 | [diff] [blame] | 996 | .start_nodes = VNET_FEATURES ("ip4-input", "ip4-input-no-checksum"), |
| 997 | .arc_index_ptr = &ip4_main.lookup_main.ucast_feature_arc_index, |
| 998 | }; |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 999 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1000 | VNET_FEATURE_INIT (ip4_flow_classify, static) = |
| 1001 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1002 | .arc_name = "ip4-unicast", |
Juraj Sloboda | 506b245 | 2016-08-07 23:45:24 -0700 | [diff] [blame] | 1003 | .node_name = "ip4-flow-classify", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1004 | .runs_before = VNET_FEATURES ("ip4-inacl"), |
Juraj Sloboda | 506b245 | 2016-08-07 23:45:24 -0700 | [diff] [blame] | 1005 | }; |
| 1006 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1007 | VNET_FEATURE_INIT (ip4_inacl, static) = |
| 1008 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1009 | .arc_name = "ip4-unicast", |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 1010 | .node_name = "ip4-inacl", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1011 | .runs_before = VNET_FEATURES ("ip4-source-check-via-rx"), |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 1012 | }; |
| 1013 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1014 | VNET_FEATURE_INIT (ip4_source_check_1, static) = |
| 1015 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1016 | .arc_name = "ip4-unicast", |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 1017 | .node_name = "ip4-source-check-via-rx", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1018 | .runs_before = VNET_FEATURES ("ip4-source-check-via-any"), |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 1019 | }; |
| 1020 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1021 | VNET_FEATURE_INIT (ip4_source_check_2, static) = |
| 1022 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1023 | .arc_name = "ip4-unicast", |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 1024 | .node_name = "ip4-source-check-via-any", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1025 | .runs_before = VNET_FEATURES ("ip4-policer-classify"), |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 1026 | }; |
| 1027 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1028 | VNET_FEATURE_INIT (ip4_source_and_port_range_check_rx, static) = |
| 1029 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1030 | .arc_name = "ip4-unicast", |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 1031 | .node_name = "ip4-source-and-port-range-check-rx", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1032 | .runs_before = VNET_FEATURES ("ip4-policer-classify"), |
Dave Barach | 6f9bca2 | 2016-04-30 10:25:32 -0400 | [diff] [blame] | 1033 | }; |
| 1034 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1035 | VNET_FEATURE_INIT (ip4_policer_classify, static) = |
| 1036 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1037 | .arc_name = "ip4-unicast", |
Matus Fabian | 70e6a8d | 2016-06-20 08:10:42 -0700 | [diff] [blame] | 1038 | .node_name = "ip4-policer-classify", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1039 | .runs_before = VNET_FEATURES ("ipsec-input-ip4"), |
Matus Fabian | 70e6a8d | 2016-06-20 08:10:42 -0700 | [diff] [blame] | 1040 | }; |
| 1041 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1042 | VNET_FEATURE_INIT (ip4_ipsec, static) = |
| 1043 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1044 | .arc_name = "ip4-unicast", |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 1045 | .node_name = "ipsec-input-ip4", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1046 | .runs_before = VNET_FEATURES ("vpath-input-ip4"), |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 1047 | }; |
| 1048 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1049 | VNET_FEATURE_INIT (ip4_vpath, static) = |
| 1050 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1051 | .arc_name = "ip4-unicast", |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 1052 | .node_name = "vpath-input-ip4", |
John Lo | 37682e1 | 2016-11-30 12:51:39 -0500 | [diff] [blame] | 1053 | .runs_before = VNET_FEATURES ("ip4-vxlan-bypass"), |
| 1054 | }; |
| 1055 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1056 | VNET_FEATURE_INIT (ip4_vxlan_bypass, static) = |
| 1057 | { |
John Lo | 37682e1 | 2016-11-30 12:51:39 -0500 | [diff] [blame] | 1058 | .arc_name = "ip4-unicast", |
| 1059 | .node_name = "ip4-vxlan-bypass", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1060 | .runs_before = VNET_FEATURES ("ip4-lookup"), |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 1061 | }; |
| 1062 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1063 | VNET_FEATURE_INIT (ip4_drop, static) = |
| 1064 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1065 | .arc_name = "ip4-unicast", |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1066 | .node_name = "ip4-drop", |
Neale Ranns | 180279b | 2017-03-16 15:49:09 -0400 | [diff] [blame] | 1067 | .runs_before = VNET_FEATURES ("ip4-lookup"), |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1068 | }; |
| 1069 | |
Neale Ranns | 180279b | 2017-03-16 15:49:09 -0400 | [diff] [blame] | 1070 | VNET_FEATURE_INIT (ip4_lookup, static) = |
| 1071 | { |
| 1072 | .arc_name = "ip4-unicast", |
| 1073 | .node_name = "ip4-lookup", |
| 1074 | .runs_before = 0, /* not before any other features */ |
| 1075 | }; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1076 | |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 1077 | /* Built-in ip4 multicast rx feature path definition */ |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1078 | VNET_FEATURE_ARC_INIT (ip4_multicast, static) = |
| 1079 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1080 | .arc_name = "ip4-multicast", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1081 | .start_nodes = VNET_FEATURES ("ip4-input", "ip4-input-no-checksum"), |
| 1082 | .arc_index_ptr = &ip4_main.lookup_main.mcast_feature_arc_index, |
| 1083 | }; |
| 1084 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1085 | VNET_FEATURE_INIT (ip4_vpath_mc, static) = |
| 1086 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1087 | .arc_name = "ip4-multicast", |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 1088 | .node_name = "vpath-input-ip4", |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 1089 | .runs_before = VNET_FEATURES ("ip4-mfib-forward-lookup"), |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 1090 | }; |
| 1091 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1092 | VNET_FEATURE_INIT (ip4_mc_drop, static) = |
| 1093 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1094 | .arc_name = "ip4-multicast", |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1095 | .node_name = "ip4-drop", |
Neale Ranns | 180279b | 2017-03-16 15:49:09 -0400 | [diff] [blame] | 1096 | .runs_before = VNET_FEATURES ("ip4-mfib-forward-lookup"), |
| 1097 | }; |
| 1098 | |
| 1099 | VNET_FEATURE_INIT (ip4_lookup_mc, static) = |
| 1100 | { |
| 1101 | .arc_name = "ip4-multicast", |
| 1102 | .node_name = "ip4-mfib-forward-lookup", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1103 | .runs_before = 0, /* last feature */ |
Neale Ranns | 5e575b1 | 2016-10-03 09:40:25 +0100 | [diff] [blame] | 1104 | }; |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 1105 | |
| 1106 | /* Source and port-range check ip4 tx feature path definition */ |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1107 | VNET_FEATURE_ARC_INIT (ip4_output, static) = |
| 1108 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1109 | .arc_name = "ip4-output", |
Neale Ranns | f06aea5 | 2016-11-29 06:51:37 -0800 | [diff] [blame] | 1110 | .start_nodes = VNET_FEATURES ("ip4-rewrite", "ip4-midchain"), |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1111 | .arc_index_ptr = &ip4_main.lookup_main.output_feature_arc_index, |
| 1112 | }; |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 1113 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1114 | VNET_FEATURE_INIT (ip4_source_and_port_range_check_tx, static) = |
| 1115 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1116 | .arc_name = "ip4-output", |
| 1117 | .node_name = "ip4-source-and-port-range-check-tx", |
Matus Fabian | 08a6f01 | 2016-11-15 06:08:51 -0800 | [diff] [blame] | 1118 | .runs_before = VNET_FEATURES ("ipsec-output-ip4"), |
| 1119 | }; |
| 1120 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1121 | VNET_FEATURE_INIT (ip4_ipsec_output, static) = |
| 1122 | { |
Matus Fabian | 08a6f01 | 2016-11-15 06:08:51 -0800 | [diff] [blame] | 1123 | .arc_name = "ip4-output", |
| 1124 | .node_name = "ipsec-output-ip4", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1125 | .runs_before = VNET_FEATURES ("interface-output"), |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 1126 | }; |
| 1127 | |
| 1128 | /* Built-in ip4 tx feature path definition */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1129 | VNET_FEATURE_INIT (ip4_interface_output, static) = |
| 1130 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1131 | .arc_name = "ip4-output", |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 1132 | .node_name = "interface-output", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1133 | .runs_before = 0, /* not before any other features */ |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 1134 | }; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1135 | /* *INDENT-ON* */ |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 1136 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1137 | static clib_error_t * |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1138 | 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] | 1139 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1140 | ip4_main_t *im = &ip4_main; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1141 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1142 | /* Fill in lookup tables with default table (0). */ |
| 1143 | vec_validate (im->fib_index_by_sw_if_index, sw_if_index); |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 1144 | vec_validate (im->mfib_index_by_sw_if_index, sw_if_index); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1145 | |
Pavel Kotucek | 9f5a2b6 | 2017-06-14 13:56:55 +0200 | [diff] [blame] | 1146 | if (!is_add) |
| 1147 | { |
| 1148 | ip4_main_t *im4 = &ip4_main; |
| 1149 | ip_lookup_main_t *lm4 = &im4->lookup_main; |
| 1150 | ip_interface_address_t *ia = 0; |
| 1151 | ip4_address_t *address; |
| 1152 | vlib_main_t *vm = vlib_get_main (); |
| 1153 | |
| 1154 | /* *INDENT-OFF* */ |
| 1155 | foreach_ip_interface_address (lm4, ia, sw_if_index, 1 /* honor unnumbered */, |
| 1156 | ({ |
| 1157 | address = ip_interface_address_get_address (lm4, ia); |
| 1158 | ip4_add_del_interface_address(vm, sw_if_index, address, ia->address_length, 1); |
| 1159 | })); |
| 1160 | /* *INDENT-ON* */ |
| 1161 | } |
| 1162 | |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1163 | vnet_feature_enable_disable ("ip4-unicast", "ip4-drop", sw_if_index, |
| 1164 | is_add, 0, 0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1165 | |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1166 | vnet_feature_enable_disable ("ip4-multicast", "ip4-drop", sw_if_index, |
| 1167 | is_add, 0, 0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1168 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1169 | return /* no error */ 0; |
| 1170 | } |
| 1171 | |
| 1172 | VNET_SW_INTERFACE_ADD_DEL_FUNCTION (ip4_sw_interface_add_del); |
| 1173 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1174 | /* Global IP4 main. */ |
| 1175 | ip4_main_t ip4_main; |
| 1176 | |
| 1177 | clib_error_t * |
| 1178 | ip4_lookup_init (vlib_main_t * vm) |
| 1179 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1180 | ip4_main_t *im = &ip4_main; |
| 1181 | clib_error_t *error; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1182 | uword i; |
| 1183 | |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1184 | if ((error = vlib_call_init_function (vm, vnet_feature_init))) |
| 1185 | return error; |
| 1186 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1187 | for (i = 0; i < ARRAY_LEN (im->fib_masks); i++) |
| 1188 | { |
| 1189 | u32 m; |
| 1190 | |
| 1191 | if (i < 32) |
| 1192 | m = pow2_mask (i) << (32 - i); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 1193 | else |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1194 | m = ~0; |
| 1195 | im->fib_masks[i] = clib_host_to_net_u32 (m); |
| 1196 | } |
| 1197 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1198 | ip_lookup_init (&im->lookup_main, /* is_ip6 */ 0); |
| 1199 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1200 | /* Create FIB with index 0 and table id of 0. */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1201 | fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, 0); |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 1202 | mfib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, 0); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1203 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1204 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1205 | pg_node_t *pn; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1206 | pn = pg_get_node (ip4_lookup_node.index); |
| 1207 | pn->unformat_edit = unformat_pg_ip4_header; |
| 1208 | } |
| 1209 | |
| 1210 | { |
| 1211 | ethernet_arp_header_t h; |
| 1212 | |
| 1213 | memset (&h, 0, sizeof (h)); |
| 1214 | |
| 1215 | /* Set target ethernet address to all zeros. */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1216 | memset (h.ip4_over_ethernet[1].ethernet, 0, |
| 1217 | sizeof (h.ip4_over_ethernet[1].ethernet)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1218 | |
| 1219 | #define _16(f,v) h.f = clib_host_to_net_u16 (v); |
| 1220 | #define _8(f,v) h.f = v; |
| 1221 | _16 (l2_type, ETHERNET_ARP_HARDWARE_TYPE_ethernet); |
| 1222 | _16 (l3_type, ETHERNET_TYPE_IP4); |
| 1223 | _8 (n_l2_address_bytes, 6); |
| 1224 | _8 (n_l3_address_bytes, 4); |
| 1225 | _16 (opcode, ETHERNET_ARP_OPCODE_request); |
| 1226 | #undef _16 |
| 1227 | #undef _8 |
| 1228 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1229 | vlib_packet_template_init (vm, &im->ip4_arp_request_packet_template, |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1230 | /* data */ &h, |
| 1231 | sizeof (h), |
| 1232 | /* alloc chunk size */ 8, |
| 1233 | "ip4 arp"); |
| 1234 | } |
| 1235 | |
Dave Barach | 203c632 | 2016-06-26 10:29:03 -0400 | [diff] [blame] | 1236 | return error; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1237 | } |
| 1238 | |
| 1239 | VLIB_INIT_FUNCTION (ip4_lookup_init); |
| 1240 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1241 | typedef struct |
| 1242 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1243 | /* Adjacency taken. */ |
Vengada Govindan | f154448 | 2016-09-28 02:45:57 -0700 | [diff] [blame] | 1244 | u32 dpo_index; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1245 | u32 flow_hash; |
| 1246 | u32 fib_index; |
| 1247 | |
| 1248 | /* Packet data, possibly *after* rewrite. */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1249 | u8 packet_data[64 - 1 * sizeof (u32)]; |
| 1250 | } |
| 1251 | ip4_forward_next_trace_t; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1252 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1253 | u8 * |
| 1254 | format_ip4_forward_next_trace (u8 * s, va_list * args) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1255 | { |
| 1256 | CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); |
| 1257 | CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1258 | ip4_forward_next_trace_t *t = va_arg (*args, ip4_forward_next_trace_t *); |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1259 | uword indent = format_get_indent (s); |
| 1260 | s = format (s, "%U%U", |
John Lo | ac8146c | 2016-09-27 17:44:02 -0400 | [diff] [blame] | 1261 | format_white_space, indent, |
| 1262 | format_ip4_header, t->packet_data, sizeof (t->packet_data)); |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1263 | return s; |
| 1264 | } |
| 1265 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1266 | static u8 * |
| 1267 | format_ip4_lookup_trace (u8 * s, va_list * args) |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1268 | { |
| 1269 | CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); |
| 1270 | CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1271 | ip4_forward_next_trace_t *t = va_arg (*args, ip4_forward_next_trace_t *); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1272 | uword indent = format_get_indent (s); |
| 1273 | |
John Lo | ac8146c | 2016-09-27 17:44:02 -0400 | [diff] [blame] | 1274 | s = format (s, "fib %d dpo-idx %d flow hash: 0x%08x", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1275 | t->fib_index, t->dpo_index, t->flow_hash); |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1276 | s = format (s, "\n%U%U", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1277 | format_white_space, indent, |
| 1278 | format_ip4_header, t->packet_data, sizeof (t->packet_data)); |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1279 | return s; |
| 1280 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1281 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1282 | static u8 * |
| 1283 | format_ip4_rewrite_trace (u8 * s, va_list * args) |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1284 | { |
| 1285 | CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); |
| 1286 | CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1287 | ip4_forward_next_trace_t *t = va_arg (*args, ip4_forward_next_trace_t *); |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1288 | uword indent = format_get_indent (s); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1289 | |
Vengada Govindan | f154448 | 2016-09-28 02:45:57 -0700 | [diff] [blame] | 1290 | 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] | 1291 | t->fib_index, t->dpo_index, format_ip_adjacency, |
| 1292 | t->dpo_index, FORMAT_IP_ADJACENCY_NONE, t->flow_hash); |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1293 | s = format (s, "\n%U%U", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1294 | format_white_space, indent, |
| 1295 | format_ip_adjacency_packet_data, |
Neale Ranns | b069a69 | 2017-03-15 12:34:25 -0400 | [diff] [blame] | 1296 | t->dpo_index, t->packet_data, sizeof (t->packet_data)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1297 | return s; |
| 1298 | } |
| 1299 | |
| 1300 | /* Common trace function for all ip4-forward next nodes. */ |
| 1301 | void |
| 1302 | ip4_forward_next_trace (vlib_main_t * vm, |
| 1303 | vlib_node_runtime_t * node, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1304 | vlib_frame_t * frame, vlib_rx_or_tx_t which_adj_index) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1305 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1306 | u32 *from, n_left; |
| 1307 | ip4_main_t *im = &ip4_main; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1308 | |
| 1309 | n_left = frame->n_vectors; |
| 1310 | from = vlib_frame_vector_args (frame); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 1311 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1312 | while (n_left >= 4) |
| 1313 | { |
| 1314 | u32 bi0, bi1; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1315 | vlib_buffer_t *b0, *b1; |
| 1316 | ip4_forward_next_trace_t *t0, *t1; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1317 | |
| 1318 | /* Prefetch next iteration. */ |
| 1319 | vlib_prefetch_buffer_with_index (vm, from[2], LOAD); |
| 1320 | vlib_prefetch_buffer_with_index (vm, from[3], LOAD); |
| 1321 | |
| 1322 | bi0 = from[0]; |
| 1323 | bi1 = from[1]; |
| 1324 | |
| 1325 | b0 = vlib_get_buffer (vm, bi0); |
| 1326 | b1 = vlib_get_buffer (vm, bi1); |
| 1327 | |
| 1328 | if (b0->flags & VLIB_BUFFER_IS_TRACED) |
| 1329 | { |
| 1330 | t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0])); |
Vengada Govindan | f154448 | 2016-09-28 02:45:57 -0700 | [diff] [blame] | 1331 | t0->dpo_index = vnet_buffer (b0)->ip.adj_index[which_adj_index]; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1332 | t0->flow_hash = vnet_buffer (b0)->ip.flow_hash; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1333 | t0->fib_index = |
| 1334 | (vnet_buffer (b0)->sw_if_index[VLIB_TX] != |
| 1335 | (u32) ~ 0) ? vnet_buffer (b0)->sw_if_index[VLIB_TX] : |
| 1336 | vec_elt (im->fib_index_by_sw_if_index, |
| 1337 | vnet_buffer (b0)->sw_if_index[VLIB_RX]); |
Pierre Pfister | 0febaf1 | 2016-06-08 12:23:21 +0100 | [diff] [blame] | 1338 | |
Damjan Marion | f1213b8 | 2016-03-13 02:22:06 +0100 | [diff] [blame] | 1339 | clib_memcpy (t0->packet_data, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1340 | vlib_buffer_get_current (b0), |
| 1341 | sizeof (t0->packet_data)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1342 | } |
| 1343 | if (b1->flags & VLIB_BUFFER_IS_TRACED) |
| 1344 | { |
| 1345 | t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0])); |
Vengada Govindan | f154448 | 2016-09-28 02:45:57 -0700 | [diff] [blame] | 1346 | t1->dpo_index = vnet_buffer (b1)->ip.adj_index[which_adj_index]; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1347 | t1->flow_hash = vnet_buffer (b1)->ip.flow_hash; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1348 | t1->fib_index = |
| 1349 | (vnet_buffer (b1)->sw_if_index[VLIB_TX] != |
| 1350 | (u32) ~ 0) ? vnet_buffer (b1)->sw_if_index[VLIB_TX] : |
| 1351 | vec_elt (im->fib_index_by_sw_if_index, |
| 1352 | vnet_buffer (b1)->sw_if_index[VLIB_RX]); |
| 1353 | clib_memcpy (t1->packet_data, vlib_buffer_get_current (b1), |
| 1354 | sizeof (t1->packet_data)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1355 | } |
| 1356 | from += 2; |
| 1357 | n_left -= 2; |
| 1358 | } |
| 1359 | |
| 1360 | while (n_left >= 1) |
| 1361 | { |
| 1362 | u32 bi0; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1363 | vlib_buffer_t *b0; |
| 1364 | ip4_forward_next_trace_t *t0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1365 | |
| 1366 | bi0 = from[0]; |
| 1367 | |
| 1368 | b0 = vlib_get_buffer (vm, bi0); |
| 1369 | |
| 1370 | if (b0->flags & VLIB_BUFFER_IS_TRACED) |
| 1371 | { |
| 1372 | t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0])); |
Vengada Govindan | f154448 | 2016-09-28 02:45:57 -0700 | [diff] [blame] | 1373 | t0->dpo_index = vnet_buffer (b0)->ip.adj_index[which_adj_index]; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1374 | t0->flow_hash = vnet_buffer (b0)->ip.flow_hash; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1375 | t0->fib_index = |
| 1376 | (vnet_buffer (b0)->sw_if_index[VLIB_TX] != |
| 1377 | (u32) ~ 0) ? vnet_buffer (b0)->sw_if_index[VLIB_TX] : |
| 1378 | vec_elt (im->fib_index_by_sw_if_index, |
| 1379 | vnet_buffer (b0)->sw_if_index[VLIB_RX]); |
| 1380 | clib_memcpy (t0->packet_data, vlib_buffer_get_current (b0), |
| 1381 | sizeof (t0->packet_data)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1382 | } |
| 1383 | from += 1; |
| 1384 | n_left -= 1; |
| 1385 | } |
| 1386 | } |
| 1387 | |
| 1388 | static uword |
| 1389 | ip4_drop_or_punt (vlib_main_t * vm, |
| 1390 | vlib_node_runtime_t * node, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1391 | vlib_frame_t * frame, ip4_error_t error_code) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1392 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1393 | u32 *buffers = vlib_frame_vector_args (frame); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1394 | uword n_packets = frame->n_vectors; |
| 1395 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1396 | vlib_error_drop_buffers (vm, node, buffers, |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1397 | /* stride */ 1, |
| 1398 | n_packets, |
| 1399 | /* next */ 0, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1400 | ip4_input_node.index, error_code); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1401 | |
| 1402 | if (node->flags & VLIB_NODE_FLAG_TRACE) |
| 1403 | ip4_forward_next_trace (vm, node, frame, VLIB_TX); |
| 1404 | |
| 1405 | return n_packets; |
| 1406 | } |
| 1407 | |
| 1408 | static uword |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1409 | ip4_drop (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) |
| 1410 | { |
| 1411 | return ip4_drop_or_punt (vm, node, frame, IP4_ERROR_ADJACENCY_DROP); |
| 1412 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1413 | |
| 1414 | static uword |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1415 | ip4_punt (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) |
| 1416 | { |
| 1417 | return ip4_drop_or_punt (vm, node, frame, IP4_ERROR_ADJACENCY_PUNT); |
| 1418 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1419 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 1420 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1421 | VLIB_REGISTER_NODE (ip4_drop_node, static) = |
| 1422 | { |
flyingeagle23 | 9e35552 | 2017-05-03 11:29:53 +0800 | [diff] [blame] | 1423 | .function = ip4_drop, |
| 1424 | .name = "ip4-drop", |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 1425 | .vector_size = sizeof (u32), |
| 1426 | .format_trace = format_ip4_forward_next_trace, |
| 1427 | .n_next_nodes = 1, |
| 1428 | .next_nodes = { |
| 1429 | [0] = "error-drop", |
| 1430 | }, |
| 1431 | }; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1432 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1433 | VLIB_NODE_FUNCTION_MULTIARCH (ip4_drop_node, ip4_drop); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1434 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1435 | VLIB_REGISTER_NODE (ip4_punt_node, static) = |
| 1436 | { |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 1437 | .function = ip4_punt, |
| 1438 | .name = "ip4-punt", |
| 1439 | .vector_size = sizeof (u32), |
| 1440 | .format_trace = format_ip4_forward_next_trace, |
| 1441 | .n_next_nodes = 1, |
| 1442 | .next_nodes = { |
| 1443 | [0] = "error-punt", |
| 1444 | }, |
| 1445 | }; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1446 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1447 | VLIB_NODE_FUNCTION_MULTIARCH (ip4_punt_node, ip4_punt); |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 1448 | /* *INDENT-ON */ |
Damjan Marion | 1c80e83 | 2016-05-11 23:07:18 +0200 | [diff] [blame] | 1449 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1450 | /* Compute TCP/UDP/ICMP4 checksum in software. */ |
| 1451 | u16 |
| 1452 | ip4_tcp_udp_compute_checksum (vlib_main_t * vm, vlib_buffer_t * p0, |
| 1453 | ip4_header_t * ip0) |
| 1454 | { |
| 1455 | ip_csum_t sum0; |
| 1456 | u32 ip_header_length, payload_length_host_byte_order; |
Florin Coras | b2215d6 | 2017-08-01 16:56:58 -0700 | [diff] [blame] | 1457 | u32 n_this_buffer, n_bytes_left, n_ip_bytes_this_buffer; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1458 | u16 sum16; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1459 | void *data_this_buffer; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 1460 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1461 | /* Initialize checksum with ip header. */ |
| 1462 | ip_header_length = ip4_header_bytes (ip0); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1463 | payload_length_host_byte_order = |
| 1464 | clib_net_to_host_u16 (ip0->length) - ip_header_length; |
| 1465 | sum0 = |
| 1466 | clib_host_to_net_u32 (payload_length_host_byte_order + |
| 1467 | (ip0->protocol << 16)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1468 | |
| 1469 | if (BITS (uword) == 32) |
| 1470 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1471 | sum0 = |
| 1472 | ip_csum_with_carry (sum0, |
| 1473 | clib_mem_unaligned (&ip0->src_address, u32)); |
| 1474 | sum0 = |
| 1475 | ip_csum_with_carry (sum0, |
| 1476 | clib_mem_unaligned (&ip0->dst_address, u32)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1477 | } |
| 1478 | else |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1479 | sum0 = |
| 1480 | ip_csum_with_carry (sum0, clib_mem_unaligned (&ip0->src_address, u64)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1481 | |
| 1482 | n_bytes_left = n_this_buffer = payload_length_host_byte_order; |
| 1483 | data_this_buffer = (void *) ip0 + ip_header_length; |
Florin Coras | b2215d6 | 2017-08-01 16:56:58 -0700 | [diff] [blame] | 1484 | n_ip_bytes_this_buffer = p0->current_length - (((u8 *) ip0 - p0->data) - p0->current_data); |
| 1485 | if (n_this_buffer + ip_header_length > n_ip_bytes_this_buffer) |
| 1486 | { |
| 1487 | n_this_buffer = n_ip_bytes_this_buffer > ip_header_length ? |
| 1488 | n_ip_bytes_this_buffer - ip_header_length : 0; |
| 1489 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1490 | while (1) |
| 1491 | { |
| 1492 | sum0 = ip_incremental_checksum (sum0, data_this_buffer, n_this_buffer); |
| 1493 | n_bytes_left -= n_this_buffer; |
| 1494 | if (n_bytes_left == 0) |
| 1495 | break; |
| 1496 | |
| 1497 | ASSERT (p0->flags & VLIB_BUFFER_NEXT_PRESENT); |
| 1498 | p0 = vlib_get_buffer (vm, p0->next_buffer); |
| 1499 | data_this_buffer = vlib_buffer_get_current (p0); |
| 1500 | n_this_buffer = p0->current_length; |
| 1501 | } |
| 1502 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1503 | sum16 = ~ip_csum_fold (sum0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1504 | |
| 1505 | return sum16; |
| 1506 | } |
| 1507 | |
John Lo | 37682e1 | 2016-11-30 12:51:39 -0500 | [diff] [blame] | 1508 | u32 |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1509 | ip4_tcp_udp_validate_checksum (vlib_main_t * vm, vlib_buffer_t * p0) |
| 1510 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1511 | ip4_header_t *ip0 = vlib_buffer_get_current (p0); |
| 1512 | udp_header_t *udp0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1513 | u16 sum16; |
| 1514 | |
| 1515 | ASSERT (ip0->protocol == IP_PROTOCOL_TCP |
| 1516 | || ip0->protocol == IP_PROTOCOL_UDP); |
| 1517 | |
| 1518 | udp0 = (void *) (ip0 + 1); |
| 1519 | if (ip0->protocol == IP_PROTOCOL_UDP && udp0->checksum == 0) |
| 1520 | { |
Damjan Marion | 213b5aa | 2017-07-13 21:19:27 +0200 | [diff] [blame] | 1521 | p0->flags |= (VNET_BUFFER_F_L4_CHECKSUM_COMPUTED |
| 1522 | | VNET_BUFFER_F_L4_CHECKSUM_CORRECT); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1523 | return p0->flags; |
| 1524 | } |
| 1525 | |
| 1526 | sum16 = ip4_tcp_udp_compute_checksum (vm, p0, ip0); |
| 1527 | |
Damjan Marion | 213b5aa | 2017-07-13 21:19:27 +0200 | [diff] [blame] | 1528 | p0->flags |= (VNET_BUFFER_F_L4_CHECKSUM_COMPUTED |
| 1529 | | ((sum16 == 0) << VNET_BUFFER_F_LOG2_L4_CHECKSUM_CORRECT)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1530 | |
| 1531 | return p0->flags; |
| 1532 | } |
| 1533 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1534 | /* *INDENT-OFF* */ |
| 1535 | VNET_FEATURE_ARC_INIT (ip4_local) = |
| 1536 | { |
| 1537 | .arc_name = "ip4-local", |
| 1538 | .start_nodes = VNET_FEATURES ("ip4-local"), |
| 1539 | }; |
| 1540 | /* *INDENT-ON* */ |
| 1541 | |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1542 | static inline void |
| 1543 | ip4_local_validate_l4 (vlib_main_t * vm, vlib_buffer_t * p, ip4_header_t * ip, |
| 1544 | u8 is_udp, u8 * error, u8 * good_tcp_udp) |
| 1545 | { |
| 1546 | u32 flags0; |
| 1547 | flags0 = ip4_tcp_udp_validate_checksum (vm, p); |
| 1548 | *good_tcp_udp = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0; |
| 1549 | if (is_udp) |
| 1550 | { |
| 1551 | udp_header_t *udp; |
| 1552 | u32 ip_len, udp_len; |
| 1553 | i32 len_diff; |
| 1554 | udp = ip4_next_header (ip); |
| 1555 | /* Verify UDP length. */ |
| 1556 | ip_len = clib_net_to_host_u16 (ip->length); |
| 1557 | udp_len = clib_net_to_host_u16 (udp->length); |
| 1558 | |
| 1559 | len_diff = ip_len - udp_len; |
| 1560 | *good_tcp_udp &= len_diff >= 0; |
| 1561 | *error = len_diff < 0 ? IP4_ERROR_UDP_LENGTH : *error; |
| 1562 | } |
| 1563 | } |
| 1564 | |
| 1565 | #define ip4_local_do_l4_check(is_tcp_udp, flags) \ |
| 1566 | (is_tcp_udp && !(flags & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED)) |
| 1567 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1568 | static inline uword |
| 1569 | ip4_local_inline (vlib_main_t * vm, |
| 1570 | vlib_node_runtime_t * node, |
| 1571 | vlib_frame_t * frame, int head_of_feature_arc) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1572 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1573 | ip4_main_t *im = &ip4_main; |
| 1574 | ip_lookup_main_t *lm = &im->lookup_main; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1575 | ip_local_next_t next_index; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1576 | u32 *from, *to_next, n_left_from, n_left_to_next; |
| 1577 | vlib_node_runtime_t *error_node = |
| 1578 | vlib_node_get_runtime (vm, ip4_input_node.index); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1579 | u8 arc_index = vnet_feat_arc_ip4_local.feature_arc_index; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1580 | |
| 1581 | from = vlib_frame_vector_args (frame); |
| 1582 | n_left_from = frame->n_vectors; |
| 1583 | next_index = node->cached_next_index; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 1584 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1585 | if (node->flags & VLIB_NODE_FLAG_TRACE) |
| 1586 | ip4_forward_next_trace (vm, node, frame, VLIB_TX); |
| 1587 | |
| 1588 | while (n_left_from > 0) |
| 1589 | { |
| 1590 | vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); |
| 1591 | |
| 1592 | while (n_left_from >= 4 && n_left_to_next >= 2) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1593 | { |
| 1594 | vlib_buffer_t *p0, *p1; |
| 1595 | ip4_header_t *ip0, *ip1; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1596 | ip4_fib_mtrie_t *mtrie0, *mtrie1; |
| 1597 | ip4_fib_mtrie_leaf_t leaf0, leaf1; |
| 1598 | const dpo_id_t *dpo0, *dpo1; |
| 1599 | const load_balance_t *lb0, *lb1; |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1600 | u32 pi0, next0, fib_index0, lbi0; |
| 1601 | u32 pi1, next1, fib_index1, lbi1; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1602 | u8 error0, is_udp0, is_tcp_udp0, good_tcp_udp0, proto0; |
| 1603 | u8 error1, is_udp1, is_tcp_udp1, good_tcp_udp1, proto1; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1604 | u32 sw_if_index0, sw_if_index1; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 1605 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1606 | pi0 = to_next[0] = from[0]; |
| 1607 | pi1 = to_next[1] = from[1]; |
| 1608 | from += 2; |
| 1609 | n_left_from -= 2; |
| 1610 | to_next += 2; |
| 1611 | n_left_to_next -= 2; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 1612 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1613 | next0 = next1 = IP_LOCAL_NEXT_DROP; |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1614 | error0 = error1 = IP4_ERROR_UNKNOWN_PROTOCOL; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1615 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1616 | p0 = vlib_get_buffer (vm, pi0); |
| 1617 | p1 = vlib_get_buffer (vm, pi1); |
| 1618 | |
| 1619 | ip0 = vlib_buffer_get_current (p0); |
| 1620 | ip1 = vlib_buffer_get_current (p1); |
| 1621 | |
Damjan Marion | 072401e | 2017-07-13 18:53:27 +0200 | [diff] [blame] | 1622 | vnet_buffer (p0)->l3_hdr_offset = p0->current_data; |
| 1623 | vnet_buffer (p1)->l3_hdr_offset = p1->current_data; |
Klement Sekera | 0e3c0de | 2016-09-29 14:43:44 +0200 | [diff] [blame] | 1624 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1625 | sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX]; |
| 1626 | sw_if_index1 = vnet_buffer (p1)->sw_if_index[VLIB_RX]; |
| 1627 | |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1628 | /* Treat IP frag packets as "experimental" protocol for now |
| 1629 | until support of IP frag reassembly is implemented */ |
| 1630 | proto0 = ip4_is_fragment (ip0) ? 0xfe : ip0->protocol; |
| 1631 | proto1 = ip4_is_fragment (ip1) ? 0xfe : ip1->protocol; |
| 1632 | |
| 1633 | if (head_of_feature_arc == 0) |
| 1634 | goto skip_checks; |
| 1635 | |
| 1636 | is_udp0 = proto0 == IP_PROTOCOL_UDP; |
| 1637 | is_udp1 = proto1 == IP_PROTOCOL_UDP; |
| 1638 | is_tcp_udp0 = is_udp0 || proto0 == IP_PROTOCOL_TCP; |
| 1639 | is_tcp_udp1 = is_udp1 || proto1 == IP_PROTOCOL_TCP; |
| 1640 | |
| 1641 | good_tcp_udp0 = |
| 1642 | (p0->flags & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0; |
| 1643 | good_tcp_udp1 = |
| 1644 | (p1->flags & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0; |
| 1645 | |
| 1646 | if (PREDICT_FALSE (ip4_local_do_l4_check (is_tcp_udp0, p0->flags) |
| 1647 | || ip4_local_do_l4_check (is_tcp_udp1, |
| 1648 | p1->flags))) |
| 1649 | { |
| 1650 | if (is_tcp_udp0) |
| 1651 | ip4_local_validate_l4 (vm, p0, ip0, is_udp0, &error0, |
| 1652 | &good_tcp_udp0); |
| 1653 | if (is_tcp_udp1) |
| 1654 | ip4_local_validate_l4 (vm, p1, ip1, is_udp1, &error1, |
| 1655 | &good_tcp_udp1); |
| 1656 | } |
| 1657 | |
| 1658 | ASSERT (IP4_ERROR_TCP_CHECKSUM + 1 == IP4_ERROR_UDP_CHECKSUM); |
| 1659 | error0 = (is_tcp_udp0 && !good_tcp_udp0 |
| 1660 | ? IP4_ERROR_TCP_CHECKSUM + is_udp0 : error0); |
| 1661 | error1 = (is_tcp_udp1 && !good_tcp_udp1 |
| 1662 | ? IP4_ERROR_TCP_CHECKSUM + is_udp1 : error1); |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1663 | |
| 1664 | fib_index0 = vec_elt (im->fib_index_by_sw_if_index, sw_if_index0); |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 1665 | fib_index0 = |
| 1666 | (vnet_buffer (p0)->sw_if_index[VLIB_TX] == |
| 1667 | (u32) ~ 0) ? fib_index0 : vnet_buffer (p0)->sw_if_index[VLIB_TX]; |
Neale Ranns | cb630ff | 2016-12-14 13:31:29 +0100 | [diff] [blame] | 1668 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1669 | fib_index1 = vec_elt (im->fib_index_by_sw_if_index, sw_if_index1); |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 1670 | fib_index1 = |
| 1671 | (vnet_buffer (p1)->sw_if_index[VLIB_TX] == |
| 1672 | (u32) ~ 0) ? fib_index1 : vnet_buffer (p1)->sw_if_index[VLIB_TX]; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1673 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1674 | mtrie0 = &ip4_fib_get (fib_index0)->mtrie; |
| 1675 | mtrie1 = &ip4_fib_get (fib_index1)->mtrie; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1676 | |
Neale Ranns | 04a75e3 | 2017-03-23 06:46:01 -0700 | [diff] [blame] | 1677 | leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, &ip0->src_address); |
| 1678 | leaf1 = ip4_fib_mtrie_lookup_step_one (mtrie1, &ip1->src_address); |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1679 | leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, |
| 1680 | 2); |
| 1681 | leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, &ip1->src_address, |
| 1682 | 2); |
| 1683 | leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, |
| 1684 | 3); |
| 1685 | leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, &ip1->src_address, |
| 1686 | 3); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1687 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1688 | vnet_buffer (p0)->ip.adj_index[VLIB_RX] = lbi0 = |
| 1689 | ip4_fib_mtrie_leaf_get_adj_index (leaf0); |
| 1690 | vnet_buffer (p0)->ip.adj_index[VLIB_TX] = lbi0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1691 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1692 | vnet_buffer (p1)->ip.adj_index[VLIB_RX] = lbi1 = |
| 1693 | ip4_fib_mtrie_leaf_get_adj_index (leaf1); |
| 1694 | vnet_buffer (p1)->ip.adj_index[VLIB_TX] = lbi1; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1695 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1696 | lb0 = load_balance_get (lbi0); |
| 1697 | lb1 = load_balance_get (lbi1); |
| 1698 | dpo0 = load_balance_get_bucket_i (lb0, 0); |
| 1699 | dpo1 = load_balance_get_bucket_i (lb1, 0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1700 | |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 1701 | /* |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1702 | * Must have a route to source otherwise we drop the packet. |
| 1703 | * ip4 broadcasts are accepted, e.g. to make dhcp client work |
Neale Ranns | 3ee4404 | 2016-10-03 13:05:48 +0100 | [diff] [blame] | 1704 | * |
| 1705 | * The checks are: |
| 1706 | * - the source is a recieve => it's from us => bogus, do this |
| 1707 | * first since it sets a different error code. |
| 1708 | * - uRPF check for any route to source - accept if passes. |
| 1709 | * - allow packets destined to the broadcast address from unknown sources |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1710 | */ |
Neale Ranns | 3ee4404 | 2016-10-03 13:05:48 +0100 | [diff] [blame] | 1711 | error0 = ((error0 == IP4_ERROR_UNKNOWN_PROTOCOL && |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1712 | dpo0->dpoi_type == DPO_RECEIVE) ? |
| 1713 | IP4_ERROR_SPOOFED_LOCAL_PACKETS : error0); |
| 1714 | error0 = ((error0 == IP4_ERROR_UNKNOWN_PROTOCOL && |
| 1715 | !fib_urpf_check_size (lb0->lb_urpf) && |
Neale Ranns | 3ee4404 | 2016-10-03 13:05:48 +0100 | [diff] [blame] | 1716 | ip0->dst_address.as_u32 != 0xFFFFFFFF) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1717 | ? IP4_ERROR_SRC_LOOKUP_MISS : error0); |
Neale Ranns | 3ee4404 | 2016-10-03 13:05:48 +0100 | [diff] [blame] | 1718 | error1 = ((error1 == IP4_ERROR_UNKNOWN_PROTOCOL && |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1719 | dpo1->dpoi_type == DPO_RECEIVE) ? |
| 1720 | IP4_ERROR_SPOOFED_LOCAL_PACKETS : error1); |
| 1721 | error1 = ((error1 == IP4_ERROR_UNKNOWN_PROTOCOL && |
| 1722 | !fib_urpf_check_size (lb1->lb_urpf) && |
Neale Ranns | 3ee4404 | 2016-10-03 13:05:48 +0100 | [diff] [blame] | 1723 | ip1->dst_address.as_u32 != 0xFFFFFFFF) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1724 | ? IP4_ERROR_SRC_LOOKUP_MISS : error1); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1725 | |
Florin Coras | a0b34a7 | 2017-03-07 01:20:52 -0800 | [diff] [blame] | 1726 | skip_checks: |
| 1727 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1728 | next0 = lm->local_next_by_ip_protocol[proto0]; |
| 1729 | next1 = lm->local_next_by_ip_protocol[proto1]; |
| 1730 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1731 | next0 = |
| 1732 | error0 != IP4_ERROR_UNKNOWN_PROTOCOL ? IP_LOCAL_NEXT_DROP : next0; |
| 1733 | next1 = |
| 1734 | error1 != IP4_ERROR_UNKNOWN_PROTOCOL ? IP_LOCAL_NEXT_DROP : next1; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1735 | |
| 1736 | p0->error = error0 ? error_node->errors[error0] : 0; |
| 1737 | p1->error = error1 ? error_node->errors[error1] : 0; |
| 1738 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1739 | if (head_of_feature_arc) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1740 | { |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1741 | if (PREDICT_TRUE (error0 == (u8) IP4_ERROR_UNKNOWN_PROTOCOL)) |
| 1742 | vnet_feature_arc_start (arc_index, sw_if_index0, &next0, p0); |
| 1743 | if (PREDICT_TRUE (error1 == (u8) IP4_ERROR_UNKNOWN_PROTOCOL)) |
| 1744 | vnet_feature_arc_start (arc_index, sw_if_index1, &next1, p1); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1745 | } |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1746 | |
| 1747 | vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next, |
| 1748 | n_left_to_next, pi0, pi1, |
| 1749 | next0, next1); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1750 | } |
| 1751 | |
| 1752 | while (n_left_from > 0 && n_left_to_next > 0) |
| 1753 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1754 | vlib_buffer_t *p0; |
| 1755 | ip4_header_t *ip0; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1756 | ip4_fib_mtrie_t *mtrie0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1757 | ip4_fib_mtrie_leaf_t leaf0; |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1758 | u32 pi0, next0, fib_index0, lbi0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1759 | u8 error0, is_udp0, is_tcp_udp0, good_tcp_udp0, proto0; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1760 | load_balance_t *lb0; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1761 | const dpo_id_t *dpo0; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1762 | u32 sw_if_index0; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1763 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1764 | pi0 = to_next[0] = from[0]; |
| 1765 | from += 1; |
| 1766 | n_left_from -= 1; |
| 1767 | to_next += 1; |
| 1768 | n_left_to_next -= 1; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 1769 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1770 | next0 = IP_LOCAL_NEXT_DROP; |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1771 | error0 = IP4_ERROR_UNKNOWN_PROTOCOL; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1772 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1773 | p0 = vlib_get_buffer (vm, pi0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1774 | ip0 = vlib_buffer_get_current (p0); |
Damjan Marion | 072401e | 2017-07-13 18:53:27 +0200 | [diff] [blame] | 1775 | vnet_buffer (p0)->l3_hdr_offset = p0->current_data; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1776 | sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX]; |
| 1777 | |
John Lo | 3419d0b | 2016-06-02 09:28:37 -0400 | [diff] [blame] | 1778 | /* Treat IP frag packets as "experimental" protocol for now |
| 1779 | until support of IP frag reassembly is implemented */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1780 | proto0 = ip4_is_fragment (ip0) ? 0xfe : ip0->protocol; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1781 | |
| 1782 | if (head_of_feature_arc == 0) |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1783 | goto skip_check; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1784 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1785 | is_udp0 = proto0 == IP_PROTOCOL_UDP; |
| 1786 | is_tcp_udp0 = is_udp0 || proto0 == IP_PROTOCOL_TCP; |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1787 | good_tcp_udp0 = |
| 1788 | (p0->flags & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1789 | |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1790 | if (PREDICT_FALSE (ip4_local_do_l4_check (is_tcp_udp0, p0->flags))) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1791 | { |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1792 | ip4_local_validate_l4 (vm, p0, ip0, is_udp0, &error0, |
| 1793 | &good_tcp_udp0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1794 | } |
| 1795 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1796 | ASSERT (IP4_ERROR_TCP_CHECKSUM + 1 == IP4_ERROR_UDP_CHECKSUM); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1797 | error0 = (is_tcp_udp0 && !good_tcp_udp0 |
| 1798 | ? IP4_ERROR_TCP_CHECKSUM + is_udp0 : error0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1799 | |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1800 | fib_index0 = vec_elt (im->fib_index_by_sw_if_index, sw_if_index0); |
| 1801 | fib_index0 = |
| 1802 | (vnet_buffer (p0)->sw_if_index[VLIB_TX] == |
| 1803 | (u32) ~ 0) ? fib_index0 : vnet_buffer (p0)->sw_if_index[VLIB_TX]; |
| 1804 | mtrie0 = &ip4_fib_get (fib_index0)->mtrie; |
| 1805 | leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, &ip0->src_address); |
| 1806 | leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, |
| 1807 | 2); |
| 1808 | leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, |
| 1809 | 3); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1810 | lbi0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1811 | vnet_buffer (p0)->ip.adj_index[VLIB_TX] = lbi0; |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1812 | vnet_buffer (p0)->ip.adj_index[VLIB_RX] = lbi0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1813 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1814 | lb0 = load_balance_get (lbi0); |
| 1815 | dpo0 = load_balance_get_bucket_i (lb0, 0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1816 | |
Neale Ranns | 3ee4404 | 2016-10-03 13:05:48 +0100 | [diff] [blame] | 1817 | error0 = ((error0 == IP4_ERROR_UNKNOWN_PROTOCOL && |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1818 | dpo0->dpoi_type == DPO_RECEIVE) ? |
| 1819 | IP4_ERROR_SPOOFED_LOCAL_PACKETS : error0); |
| 1820 | error0 = ((error0 == IP4_ERROR_UNKNOWN_PROTOCOL && |
| 1821 | !fib_urpf_check_size (lb0->lb_urpf) && |
Neale Ranns | 3ee4404 | 2016-10-03 13:05:48 +0100 | [diff] [blame] | 1822 | ip0->dst_address.as_u32 != 0xFFFFFFFF) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1823 | ? IP4_ERROR_SRC_LOOKUP_MISS : error0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1824 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1825 | skip_check: |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1826 | next0 = lm->local_next_by_ip_protocol[proto0]; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1827 | next0 = |
| 1828 | error0 != IP4_ERROR_UNKNOWN_PROTOCOL ? IP_LOCAL_NEXT_DROP : next0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1829 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1830 | p0->error = error0 ? error_node->errors[error0] : 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1831 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1832 | if (head_of_feature_arc) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1833 | { |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1834 | if (PREDICT_TRUE (error0 == (u8) IP4_ERROR_UNKNOWN_PROTOCOL)) |
| 1835 | vnet_feature_arc_start (arc_index, sw_if_index0, &next0, p0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1836 | } |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1837 | |
| 1838 | vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, |
| 1839 | n_left_to_next, pi0, next0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1840 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1841 | vlib_put_next_frame (vm, node, next_index, n_left_to_next); |
| 1842 | } |
| 1843 | |
| 1844 | return frame->n_vectors; |
| 1845 | } |
| 1846 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1847 | static uword |
| 1848 | ip4_local (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) |
| 1849 | { |
| 1850 | return ip4_local_inline (vm, node, frame, 1 /* head of feature arc */ ); |
| 1851 | } |
| 1852 | |
| 1853 | /* *INDENT-OFF* */ |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 1854 | VLIB_REGISTER_NODE (ip4_local_node) = |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1855 | { |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1856 | .function = ip4_local, |
| 1857 | .name = "ip4-local", |
| 1858 | .vector_size = sizeof (u32), |
| 1859 | .format_trace = format_ip4_forward_next_trace, |
| 1860 | .n_next_nodes = IP_LOCAL_N_NEXT, |
| 1861 | .next_nodes = |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1862 | { |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1863 | [IP_LOCAL_NEXT_DROP] = "error-drop", |
| 1864 | [IP_LOCAL_NEXT_PUNT] = "error-punt", |
| 1865 | [IP_LOCAL_NEXT_UDP_LOOKUP] = "ip4-udp-lookup", |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1866 | [IP_LOCAL_NEXT_ICMP] = "ip4-icmp-input", |
| 1867 | }, |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1868 | }; |
| 1869 | /* *INDENT-ON* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1870 | |
| 1871 | VLIB_NODE_FUNCTION_MULTIARCH (ip4_local_node, ip4_local); |
| 1872 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1873 | static uword |
| 1874 | ip4_local_end_of_arc (vlib_main_t * vm, |
| 1875 | vlib_node_runtime_t * node, vlib_frame_t * frame) |
| 1876 | { |
| 1877 | return ip4_local_inline (vm, node, frame, 0 /* head of feature arc */ ); |
| 1878 | } |
| 1879 | |
| 1880 | /* *INDENT-OFF* */ |
| 1881 | VLIB_REGISTER_NODE (ip4_local_end_of_arc_node,static) = { |
| 1882 | .function = ip4_local_end_of_arc, |
| 1883 | .name = "ip4-local-end-of-arc", |
| 1884 | .vector_size = sizeof (u32), |
| 1885 | |
| 1886 | .format_trace = format_ip4_forward_next_trace, |
| 1887 | .sibling_of = "ip4-local", |
| 1888 | }; |
| 1889 | |
| 1890 | VLIB_NODE_FUNCTION_MULTIARCH (ip4_local_end_of_arc_node, ip4_local_end_of_arc) |
| 1891 | |
| 1892 | VNET_FEATURE_INIT (ip4_local_end_of_arc, static) = { |
| 1893 | .arc_name = "ip4-local", |
| 1894 | .node_name = "ip4-local-end-of-arc", |
| 1895 | .runs_before = 0, /* not before any other features */ |
| 1896 | }; |
| 1897 | /* *INDENT-ON* */ |
| 1898 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1899 | void |
| 1900 | ip4_register_protocol (u32 protocol, u32 node_index) |
| 1901 | { |
| 1902 | vlib_main_t *vm = vlib_get_main (); |
| 1903 | ip4_main_t *im = &ip4_main; |
| 1904 | ip_lookup_main_t *lm = &im->lookup_main; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1905 | |
| 1906 | ASSERT (protocol < ARRAY_LEN (lm->local_next_by_ip_protocol)); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1907 | lm->local_next_by_ip_protocol[protocol] = |
| 1908 | vlib_node_add_next (vm, ip4_local_node.index, node_index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1909 | } |
| 1910 | |
| 1911 | static clib_error_t * |
| 1912 | show_ip_local_command_fn (vlib_main_t * vm, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1913 | unformat_input_t * input, vlib_cli_command_t * cmd) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1914 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1915 | ip4_main_t *im = &ip4_main; |
| 1916 | ip_lookup_main_t *lm = &im->lookup_main; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1917 | int i; |
| 1918 | |
| 1919 | vlib_cli_output (vm, "Protocols handled by ip4_local"); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1920 | 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] | 1921 | { |
| 1922 | if (lm->local_next_by_ip_protocol[i] != IP_LOCAL_NEXT_PUNT) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1923 | vlib_cli_output (vm, "%d", i); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1924 | } |
| 1925 | return 0; |
| 1926 | } |
| 1927 | |
| 1928 | |
| 1929 | |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 1930 | /*? |
| 1931 | * Display the set of protocols handled by the local IPv4 stack. |
| 1932 | * |
| 1933 | * @cliexpar |
| 1934 | * Example of how to display local protocol table: |
| 1935 | * @cliexstart{show ip local} |
| 1936 | * Protocols handled by ip4_local |
| 1937 | * 1 |
| 1938 | * 17 |
| 1939 | * 47 |
| 1940 | * @cliexend |
| 1941 | ?*/ |
| 1942 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1943 | VLIB_CLI_COMMAND (show_ip_local, static) = |
| 1944 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1945 | .path = "show ip local", |
| 1946 | .function = show_ip_local_command_fn, |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 1947 | .short_help = "show ip local", |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1948 | }; |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 1949 | /* *INDENT-ON* */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1950 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1951 | always_inline uword |
| 1952 | ip4_arp_inline (vlib_main_t * vm, |
| 1953 | vlib_node_runtime_t * node, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1954 | vlib_frame_t * frame, int is_glean) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1955 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1956 | vnet_main_t *vnm = vnet_get_main (); |
| 1957 | ip4_main_t *im = &ip4_main; |
| 1958 | ip_lookup_main_t *lm = &im->lookup_main; |
| 1959 | u32 *from, *to_next_drop; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1960 | uword n_left_from, n_left_to_next_drop, next_index; |
| 1961 | static f64 time_last_seed_change = -1e100; |
| 1962 | static u32 hash_seeds[3]; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 1963 | static uword hash_bitmap[256 / BITS (uword)]; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1964 | f64 time_now; |
| 1965 | |
| 1966 | if (node->flags & VLIB_NODE_FLAG_TRACE) |
| 1967 | ip4_forward_next_trace (vm, node, frame, VLIB_TX); |
| 1968 | |
| 1969 | time_now = vlib_time_now (vm); |
| 1970 | if (time_now - time_last_seed_change > 1e-3) |
| 1971 | { |
| 1972 | uword i; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1973 | u32 *r = clib_random_buffer_get_data (&vm->random_buffer, |
| 1974 | sizeof (hash_seeds)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1975 | for (i = 0; i < ARRAY_LEN (hash_seeds); i++) |
| 1976 | hash_seeds[i] = r[i]; |
| 1977 | |
| 1978 | /* Mark all hash keys as been no-seen before. */ |
| 1979 | for (i = 0; i < ARRAY_LEN (hash_bitmap); i++) |
| 1980 | hash_bitmap[i] = 0; |
| 1981 | |
| 1982 | time_last_seed_change = time_now; |
| 1983 | } |
| 1984 | |
| 1985 | from = vlib_frame_vector_args (frame); |
| 1986 | n_left_from = frame->n_vectors; |
| 1987 | next_index = node->cached_next_index; |
| 1988 | if (next_index == IP4_ARP_NEXT_DROP) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1989 | next_index = IP4_ARP_N_NEXT; /* point to first interface */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1990 | |
| 1991 | while (n_left_from > 0) |
| 1992 | { |
| 1993 | vlib_get_next_frame (vm, node, IP4_ARP_NEXT_DROP, |
| 1994 | to_next_drop, n_left_to_next_drop); |
| 1995 | |
| 1996 | while (n_left_from > 0 && n_left_to_next_drop > 0) |
| 1997 | { |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1998 | u32 pi0, adj_index0, a0, b0, c0, m0, sw_if_index0, drop0; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1999 | ip_adjacency_t *adj0; |
| 2000 | vlib_buffer_t *p0; |
| 2001 | ip4_header_t *ip0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2002 | uword bm0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2003 | |
| 2004 | pi0 = from[0]; |
| 2005 | |
| 2006 | p0 = vlib_get_buffer (vm, pi0); |
| 2007 | |
| 2008 | adj_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX]; |
Neale Ranns | 107e7d4 | 2017-04-11 09:55:19 -0700 | [diff] [blame] | 2009 | adj0 = adj_get (adj_index0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2010 | ip0 = vlib_buffer_get_current (p0); |
| 2011 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2012 | a0 = hash_seeds[0]; |
| 2013 | b0 = hash_seeds[1]; |
| 2014 | c0 = hash_seeds[2]; |
| 2015 | |
| 2016 | sw_if_index0 = adj0->rewrite_header.sw_if_index; |
| 2017 | vnet_buffer (p0)->sw_if_index[VLIB_TX] = sw_if_index0; |
| 2018 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2019 | if (is_glean) |
| 2020 | { |
Neale Ranns | 948e00f | 2016-10-20 13:39:34 +0100 | [diff] [blame] | 2021 | /* |
| 2022 | * this is the Glean case, so we are ARPing for the |
| 2023 | * packet's destination |
| 2024 | */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2025 | a0 ^= ip0->dst_address.data_u32; |
| 2026 | } |
| 2027 | else |
| 2028 | { |
| 2029 | a0 ^= adj0->sub_type.nbr.next_hop.ip4.data_u32; |
| 2030 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2031 | b0 ^= sw_if_index0; |
| 2032 | |
| 2033 | hash_v3_finalize32 (a0, b0, c0); |
| 2034 | |
| 2035 | c0 &= BITS (hash_bitmap) - 1; |
| 2036 | c0 = c0 / BITS (uword); |
| 2037 | m0 = (uword) 1 << (c0 % BITS (uword)); |
| 2038 | |
| 2039 | bm0 = hash_bitmap[c0]; |
| 2040 | drop0 = (bm0 & m0) != 0; |
| 2041 | |
| 2042 | /* Mark it as seen. */ |
| 2043 | hash_bitmap[c0] = bm0 | m0; |
| 2044 | |
| 2045 | from += 1; |
| 2046 | n_left_from -= 1; |
| 2047 | to_next_drop[0] = pi0; |
| 2048 | to_next_drop += 1; |
| 2049 | n_left_to_next_drop -= 1; |
| 2050 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2051 | p0->error = |
| 2052 | node->errors[drop0 ? IP4_ARP_ERROR_DROP : |
| 2053 | IP4_ARP_ERROR_REQUEST_SENT]; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2054 | |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 2055 | /* |
| 2056 | * the adj has been updated to a rewrite but the node the DPO that got |
| 2057 | * us here hasn't - yet. no big deal. we'll drop while we wait. |
| 2058 | */ |
| 2059 | if (IP_LOOKUP_NEXT_REWRITE == adj0->lookup_next_index) |
| 2060 | continue; |
| 2061 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2062 | if (drop0) |
| 2063 | continue; |
| 2064 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2065 | /* |
| 2066 | * Can happen if the control-plane is programming tables |
| 2067 | * with traffic flowing; at least that's today's lame excuse. |
| 2068 | */ |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2069 | if ((is_glean && adj0->lookup_next_index != IP_LOOKUP_NEXT_GLEAN) |
| 2070 | || (!is_glean && adj0->lookup_next_index != IP_LOOKUP_NEXT_ARP)) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2071 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2072 | p0->error = node->errors[IP4_ARP_ERROR_NON_ARP_ADJ]; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2073 | } |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2074 | else |
| 2075 | /* Send ARP request. */ |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2076 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2077 | u32 bi0 = 0; |
| 2078 | vlib_buffer_t *b0; |
| 2079 | ethernet_arp_header_t *h0; |
| 2080 | vnet_hw_interface_t *hw_if0; |
| 2081 | |
| 2082 | h0 = |
| 2083 | vlib_packet_template_get_packet (vm, |
| 2084 | &im->ip4_arp_request_packet_template, |
| 2085 | &bi0); |
| 2086 | |
| 2087 | /* Add rewrite/encap string for ARP packet. */ |
| 2088 | vnet_rewrite_one_header (adj0[0], h0, |
| 2089 | sizeof (ethernet_header_t)); |
| 2090 | |
| 2091 | hw_if0 = vnet_get_sup_hw_interface (vnm, sw_if_index0); |
| 2092 | |
| 2093 | /* Src ethernet address in ARP header. */ |
| 2094 | clib_memcpy (h0->ip4_over_ethernet[0].ethernet, |
| 2095 | hw_if0->hw_address, |
| 2096 | sizeof (h0->ip4_over_ethernet[0].ethernet)); |
| 2097 | |
| 2098 | if (is_glean) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2099 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2100 | /* The interface's source address is stashed in the Glean Adj */ |
| 2101 | h0->ip4_over_ethernet[0].ip4 = |
| 2102 | adj0->sub_type.glean.receive_addr.ip4; |
| 2103 | |
| 2104 | /* Copy in destination address we are requesting. This is the |
| 2105 | * glean case, so it's the packet's destination.*/ |
| 2106 | h0->ip4_over_ethernet[1].ip4.data_u32 = |
| 2107 | ip0->dst_address.data_u32; |
| 2108 | } |
| 2109 | else |
| 2110 | { |
| 2111 | /* Src IP address in ARP header. */ |
| 2112 | if (ip4_src_address_for_packet (lm, sw_if_index0, |
| 2113 | &h0-> |
| 2114 | ip4_over_ethernet[0].ip4)) |
| 2115 | { |
| 2116 | /* No source address available */ |
| 2117 | p0->error = |
| 2118 | node->errors[IP4_ARP_ERROR_NO_SOURCE_ADDRESS]; |
| 2119 | vlib_buffer_free (vm, &bi0, 1); |
| 2120 | continue; |
| 2121 | } |
| 2122 | |
| 2123 | /* Copy in destination address we are requesting from the |
| 2124 | incomplete adj */ |
| 2125 | h0->ip4_over_ethernet[1].ip4.data_u32 = |
| 2126 | adj0->sub_type.nbr.next_hop.ip4.as_u32; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2127 | } |
| 2128 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2129 | vlib_buffer_copy_trace_flag (vm, p0, bi0); |
| 2130 | b0 = vlib_get_buffer (vm, bi0); |
| 2131 | vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0; |
| 2132 | |
| 2133 | vlib_buffer_advance (b0, -adj0->rewrite_header.data_bytes); |
| 2134 | |
| 2135 | vlib_set_next_frame_buffer (vm, node, |
| 2136 | adj0->rewrite_header.next_index, |
| 2137 | bi0); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2138 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2139 | } |
| 2140 | |
| 2141 | vlib_put_next_frame (vm, node, IP4_ARP_NEXT_DROP, n_left_to_next_drop); |
| 2142 | } |
| 2143 | |
| 2144 | return frame->n_vectors; |
| 2145 | } |
| 2146 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2147 | static uword |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2148 | ip4_arp (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2149 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2150 | return (ip4_arp_inline (vm, node, frame, 0)); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2151 | } |
| 2152 | |
| 2153 | static uword |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2154 | ip4_glean (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2155 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2156 | return (ip4_arp_inline (vm, node, frame, 1)); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2157 | } |
| 2158 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2159 | static char *ip4_arp_error_strings[] = { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2160 | [IP4_ARP_ERROR_DROP] = "address overflow drops", |
| 2161 | [IP4_ARP_ERROR_REQUEST_SENT] = "ARP requests sent", |
| 2162 | [IP4_ARP_ERROR_NON_ARP_ADJ] = "ARPs to non-ARP adjacencies", |
| 2163 | [IP4_ARP_ERROR_REPLICATE_DROP] = "ARP replication completed", |
| 2164 | [IP4_ARP_ERROR_REPLICATE_FAIL] = "ARP replication failed", |
Pierre Pfister | d076f19 | 2016-06-22 12:58:30 +0100 | [diff] [blame] | 2165 | [IP4_ARP_ERROR_NO_SOURCE_ADDRESS] = "no source address for ARP request", |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2166 | }; |
| 2167 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2168 | VLIB_REGISTER_NODE (ip4_arp_node) = |
| 2169 | { |
| 2170 | .function = ip4_arp,.name = "ip4-arp",.vector_size = |
| 2171 | sizeof (u32),.format_trace = format_ip4_forward_next_trace,.n_errors = |
| 2172 | ARRAY_LEN (ip4_arp_error_strings),.error_strings = |
| 2173 | ip4_arp_error_strings,.n_next_nodes = IP4_ARP_N_NEXT,.next_nodes = |
| 2174 | { |
| 2175 | [IP4_ARP_NEXT_DROP] = "error-drop",} |
| 2176 | ,}; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2177 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2178 | VLIB_REGISTER_NODE (ip4_glean_node) = |
| 2179 | { |
| 2180 | .function = ip4_glean,.name = "ip4-glean",.vector_size = |
| 2181 | sizeof (u32),.format_trace = format_ip4_forward_next_trace,.n_errors = |
| 2182 | ARRAY_LEN (ip4_arp_error_strings),.error_strings = |
| 2183 | ip4_arp_error_strings,.n_next_nodes = IP4_ARP_N_NEXT,.next_nodes = |
| 2184 | { |
| 2185 | [IP4_ARP_NEXT_DROP] = "error-drop",} |
| 2186 | ,}; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2187 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2188 | #define foreach_notrace_ip4_arp_error \ |
| 2189 | _(DROP) \ |
| 2190 | _(REQUEST_SENT) \ |
| 2191 | _(REPLICATE_DROP) \ |
| 2192 | _(REPLICATE_FAIL) |
| 2193 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2194 | clib_error_t * |
| 2195 | arp_notrace_init (vlib_main_t * vm) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2196 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2197 | 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] | 2198 | |
| 2199 | /* don't trace ARP request packets */ |
| 2200 | #define _(a) \ |
| 2201 | vnet_pcap_drop_trace_filter_add_del \ |
| 2202 | (rt->errors[IP4_ARP_ERROR_##a], \ |
| 2203 | 1 /* is_add */); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2204 | foreach_notrace_ip4_arp_error; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2205 | #undef _ |
| 2206 | return 0; |
| 2207 | } |
| 2208 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2209 | VLIB_INIT_FUNCTION (arp_notrace_init); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2210 | |
| 2211 | |
| 2212 | /* Send an ARP request to see if given destination is reachable on given interface. */ |
| 2213 | clib_error_t * |
| 2214 | ip4_probe_neighbor (vlib_main_t * vm, ip4_address_t * dst, u32 sw_if_index) |
| 2215 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2216 | vnet_main_t *vnm = vnet_get_main (); |
| 2217 | ip4_main_t *im = &ip4_main; |
| 2218 | ethernet_arp_header_t *h; |
| 2219 | ip4_address_t *src; |
| 2220 | ip_interface_address_t *ia; |
| 2221 | ip_adjacency_t *adj; |
| 2222 | vnet_hw_interface_t *hi; |
| 2223 | vnet_sw_interface_t *si; |
| 2224 | vlib_buffer_t *b; |
Neale Ranns | 7a27274 | 2017-05-30 02:08:14 -0700 | [diff] [blame] | 2225 | adj_index_t ai; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2226 | u32 bi = 0; |
| 2227 | |
| 2228 | si = vnet_get_sw_interface (vnm, sw_if_index); |
| 2229 | |
| 2230 | if (!(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)) |
| 2231 | { |
| 2232 | return clib_error_return (0, "%U: interface %U down", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2233 | format_ip4_address, dst, |
| 2234 | format_vnet_sw_if_index_name, vnm, |
| 2235 | sw_if_index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2236 | } |
| 2237 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2238 | src = |
| 2239 | ip4_interface_address_matching_destination (im, dst, sw_if_index, &ia); |
| 2240 | if (!src) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2241 | { |
| 2242 | vnm->api_errno = VNET_API_ERROR_NO_MATCHING_INTERFACE; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2243 | return clib_error_return |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2244 | (0, |
| 2245 | "no matching interface address for destination %U (interface %U)", |
| 2246 | format_ip4_address, dst, format_vnet_sw_if_index_name, vnm, |
| 2247 | sw_if_index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2248 | } |
| 2249 | |
Neale Ranns | 7a27274 | 2017-05-30 02:08:14 -0700 | [diff] [blame] | 2250 | ip46_address_t nh = { |
| 2251 | .ip4 = *dst, |
| 2252 | }; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2253 | |
Neale Ranns | 7a27274 | 2017-05-30 02:08:14 -0700 | [diff] [blame] | 2254 | ai = adj_nbr_add_or_lock (FIB_PROTOCOL_IP4, |
| 2255 | VNET_LINK_IP4, &nh, sw_if_index); |
| 2256 | adj = adj_get (ai); |
| 2257 | |
| 2258 | h = vlib_packet_template_get_packet (vm, |
| 2259 | &im->ip4_arp_request_packet_template, |
| 2260 | &bi); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2261 | |
| 2262 | hi = vnet_get_sup_hw_interface (vnm, sw_if_index); |
Pavel Kotucek | 5780898 | 2017-08-02 08:20:19 +0200 | [diff] [blame] | 2263 | if (PREDICT_FALSE (!hi->hw_address)) |
| 2264 | { |
| 2265 | return clib_error_return (0, "%U: interface %U do not support ip probe", |
| 2266 | format_ip4_address, dst, |
| 2267 | format_vnet_sw_if_index_name, vnm, |
| 2268 | sw_if_index); |
| 2269 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2270 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2271 | clib_memcpy (h->ip4_over_ethernet[0].ethernet, hi->hw_address, |
| 2272 | sizeof (h->ip4_over_ethernet[0].ethernet)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2273 | |
| 2274 | h->ip4_over_ethernet[0].ip4 = src[0]; |
| 2275 | h->ip4_over_ethernet[1].ip4 = dst[0]; |
| 2276 | |
| 2277 | b = vlib_get_buffer (vm, bi); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2278 | vnet_buffer (b)->sw_if_index[VLIB_RX] = |
| 2279 | vnet_buffer (b)->sw_if_index[VLIB_TX] = sw_if_index; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2280 | |
| 2281 | /* Add encapsulation string for software interface (e.g. ethernet header). */ |
| 2282 | vnet_rewrite_one_header (adj[0], h, sizeof (ethernet_header_t)); |
| 2283 | vlib_buffer_advance (b, -adj->rewrite_header.data_bytes); |
| 2284 | |
| 2285 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2286 | vlib_frame_t *f = vlib_get_frame_to_node (vm, hi->output_node_index); |
| 2287 | u32 *to_next = vlib_frame_vector_args (f); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2288 | to_next[0] = bi; |
| 2289 | f->n_vectors = 1; |
| 2290 | vlib_put_frame_to_node (vm, hi->output_node_index, f); |
| 2291 | } |
| 2292 | |
Neale Ranns | 7a27274 | 2017-05-30 02:08:14 -0700 | [diff] [blame] | 2293 | adj_unlock (ai); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2294 | return /* no error */ 0; |
| 2295 | } |
| 2296 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2297 | typedef enum |
| 2298 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2299 | IP4_REWRITE_NEXT_DROP, |
Chris Luke | 816f3e1 | 2016-06-14 16:24:47 -0400 | [diff] [blame] | 2300 | IP4_REWRITE_NEXT_ICMP_ERROR, |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2301 | } ip4_rewrite_next_t; |
| 2302 | |
| 2303 | always_inline uword |
| 2304 | ip4_rewrite_inline (vlib_main_t * vm, |
| 2305 | vlib_node_runtime_t * node, |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 2306 | vlib_frame_t * frame, |
| 2307 | int do_counters, int is_midchain, int is_mcast) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2308 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2309 | ip_lookup_main_t *lm = &ip4_main.lookup_main; |
| 2310 | u32 *from = vlib_frame_vector_args (frame); |
| 2311 | u32 n_left_from, n_left_to_next, *to_next, next_index; |
| 2312 | vlib_node_runtime_t *error_node = |
| 2313 | vlib_node_get_runtime (vm, ip4_input_node.index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2314 | |
| 2315 | n_left_from = frame->n_vectors; |
| 2316 | next_index = node->cached_next_index; |
Damjan Marion | 586afd7 | 2017-04-05 19:18:20 +0200 | [diff] [blame] | 2317 | u32 thread_index = vlib_get_thread_index (); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2318 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2319 | while (n_left_from > 0) |
| 2320 | { |
| 2321 | vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); |
| 2322 | |
| 2323 | while (n_left_from >= 4 && n_left_to_next >= 2) |
| 2324 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2325 | ip_adjacency_t *adj0, *adj1; |
| 2326 | vlib_buffer_t *p0, *p1; |
| 2327 | ip4_header_t *ip0, *ip1; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2328 | u32 pi0, rw_len0, next0, error0, checksum0, adj_index0; |
| 2329 | u32 pi1, rw_len1, next1, error1, checksum1, adj_index1; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2330 | u32 tx_sw_if_index0, tx_sw_if_index1; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2331 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2332 | /* Prefetch next iteration. */ |
| 2333 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2334 | vlib_buffer_t *p2, *p3; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2335 | |
| 2336 | p2 = vlib_get_buffer (vm, from[2]); |
| 2337 | p3 = vlib_get_buffer (vm, from[3]); |
| 2338 | |
| 2339 | vlib_prefetch_buffer_header (p2, STORE); |
| 2340 | vlib_prefetch_buffer_header (p3, STORE); |
| 2341 | |
| 2342 | CLIB_PREFETCH (p2->data, sizeof (ip0[0]), STORE); |
| 2343 | CLIB_PREFETCH (p3->data, sizeof (ip0[0]), STORE); |
| 2344 | } |
| 2345 | |
| 2346 | pi0 = to_next[0] = from[0]; |
| 2347 | pi1 = to_next[1] = from[1]; |
| 2348 | |
| 2349 | from += 2; |
| 2350 | n_left_from -= 2; |
| 2351 | to_next += 2; |
| 2352 | n_left_to_next -= 2; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2353 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2354 | p0 = vlib_get_buffer (vm, pi0); |
| 2355 | p1 = vlib_get_buffer (vm, pi1); |
| 2356 | |
Neale Ranns | f06aea5 | 2016-11-29 06:51:37 -0800 | [diff] [blame] | 2357 | adj_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX]; |
| 2358 | adj_index1 = vnet_buffer (p1)->ip.adj_index[VLIB_TX]; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2359 | |
Neale Ranns | 1bd0109 | 2017-03-15 15:41:17 -0400 | [diff] [blame] | 2360 | /* |
| 2361 | * pre-fetch the per-adjacency counters |
| 2362 | */ |
| 2363 | if (do_counters) |
| 2364 | { |
| 2365 | vlib_prefetch_combined_counter (&adjacency_counters, |
Damjan Marion | 586afd7 | 2017-04-05 19:18:20 +0200 | [diff] [blame] | 2366 | thread_index, adj_index0); |
Neale Ranns | 1bd0109 | 2017-03-15 15:41:17 -0400 | [diff] [blame] | 2367 | vlib_prefetch_combined_counter (&adjacency_counters, |
Damjan Marion | 586afd7 | 2017-04-05 19:18:20 +0200 | [diff] [blame] | 2368 | thread_index, adj_index1); |
Neale Ranns | 1bd0109 | 2017-03-15 15:41:17 -0400 | [diff] [blame] | 2369 | } |
| 2370 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2371 | ip0 = vlib_buffer_get_current (p0); |
| 2372 | ip1 = vlib_buffer_get_current (p1); |
| 2373 | |
| 2374 | error0 = error1 = IP4_ERROR_NONE; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2375 | next0 = next1 = IP4_REWRITE_NEXT_DROP; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2376 | |
| 2377 | /* Decrement TTL & update checksum. |
| 2378 | Works either endian, so no need for byte swap. */ |
Damjan Marion | 213b5aa | 2017-07-13 21:19:27 +0200 | [diff] [blame] | 2379 | if (PREDICT_TRUE (!(p0->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED))) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2380 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2381 | i32 ttl0 = ip0->ttl; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2382 | |
| 2383 | /* Input node should have reject packets with ttl 0. */ |
| 2384 | ASSERT (ip0->ttl > 0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2385 | |
| 2386 | checksum0 = ip0->checksum + clib_host_to_net_u16 (0x0100); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2387 | checksum0 += checksum0 >= 0xffff; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2388 | |
| 2389 | ip0->checksum = checksum0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2390 | ttl0 -= 1; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2391 | ip0->ttl = ttl0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2392 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2393 | /* |
| 2394 | * If the ttl drops below 1 when forwarding, generate |
| 2395 | * an ICMP response. |
| 2396 | */ |
| 2397 | if (PREDICT_FALSE (ttl0 <= 0)) |
| 2398 | { |
| 2399 | error0 = IP4_ERROR_TIME_EXPIRED; |
| 2400 | vnet_buffer (p0)->sw_if_index[VLIB_TX] = (u32) ~ 0; |
| 2401 | icmp4_error_set_vnet_buffer (p0, ICMP4_time_exceeded, |
| 2402 | ICMP4_time_exceeded_ttl_exceeded_in_transit, |
| 2403 | 0); |
| 2404 | next0 = IP4_REWRITE_NEXT_ICMP_ERROR; |
| 2405 | } |
Neale Ranns | f06aea5 | 2016-11-29 06:51:37 -0800 | [diff] [blame] | 2406 | |
| 2407 | /* Verify checksum. */ |
Dave Barach | 2c0a4f4 | 2017-06-29 09:30:15 -0400 | [diff] [blame] | 2408 | ASSERT ((ip0->checksum == ip4_header_checksum (ip0)) || |
Damjan Marion | fb3288f | 2017-07-19 15:07:10 +0200 | [diff] [blame] | 2409 | (p0->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM)); |
Neale Ranns | f06aea5 | 2016-11-29 06:51:37 -0800 | [diff] [blame] | 2410 | } |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2411 | else |
| 2412 | { |
Damjan Marion | 213b5aa | 2017-07-13 21:19:27 +0200 | [diff] [blame] | 2413 | p0->flags &= ~VNET_BUFFER_F_LOCALLY_ORIGINATED; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2414 | } |
Damjan Marion | 213b5aa | 2017-07-13 21:19:27 +0200 | [diff] [blame] | 2415 | if (PREDICT_TRUE (!(p1->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED))) |
Neale Ranns | f06aea5 | 2016-11-29 06:51:37 -0800 | [diff] [blame] | 2416 | { |
| 2417 | i32 ttl1 = ip1->ttl; |
| 2418 | |
| 2419 | /* Input node should have reject packets with ttl 0. */ |
| 2420 | ASSERT (ip1->ttl > 0); |
| 2421 | |
| 2422 | checksum1 = ip1->checksum + clib_host_to_net_u16 (0x0100); |
| 2423 | checksum1 += checksum1 >= 0xffff; |
| 2424 | |
| 2425 | ip1->checksum = checksum1; |
| 2426 | ttl1 -= 1; |
| 2427 | ip1->ttl = ttl1; |
| 2428 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2429 | /* |
| 2430 | * If the ttl drops below 1 when forwarding, generate |
| 2431 | * an ICMP response. |
| 2432 | */ |
| 2433 | if (PREDICT_FALSE (ttl1 <= 0)) |
| 2434 | { |
| 2435 | error1 = IP4_ERROR_TIME_EXPIRED; |
| 2436 | vnet_buffer (p1)->sw_if_index[VLIB_TX] = (u32) ~ 0; |
| 2437 | icmp4_error_set_vnet_buffer (p1, ICMP4_time_exceeded, |
| 2438 | ICMP4_time_exceeded_ttl_exceeded_in_transit, |
| 2439 | 0); |
| 2440 | next1 = IP4_REWRITE_NEXT_ICMP_ERROR; |
| 2441 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2442 | |
| 2443 | /* Verify checksum. */ |
Dave Barach | 2c0a4f4 | 2017-06-29 09:30:15 -0400 | [diff] [blame] | 2444 | ASSERT ((ip1->checksum == ip4_header_checksum (ip1)) || |
Damjan Marion | fb3288f | 2017-07-19 15:07:10 +0200 | [diff] [blame] | 2445 | (p1->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2446 | } |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2447 | else |
| 2448 | { |
Damjan Marion | 213b5aa | 2017-07-13 21:19:27 +0200 | [diff] [blame] | 2449 | p1->flags &= ~VNET_BUFFER_F_LOCALLY_ORIGINATED; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2450 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2451 | |
| 2452 | /* Rewrite packet header and updates lengths. */ |
Neale Ranns | 107e7d4 | 2017-04-11 09:55:19 -0700 | [diff] [blame] | 2453 | adj0 = adj_get (adj_index0); |
| 2454 | adj1 = adj_get (adj_index1); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2455 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2456 | /* Worth pipelining. No guarantee that adj0,1 are hot... */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2457 | rw_len0 = adj0[0].rewrite_header.data_bytes; |
| 2458 | rw_len1 = adj1[0].rewrite_header.data_bytes; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2459 | vnet_buffer (p0)->ip.save_rewrite_length = rw_len0; |
| 2460 | vnet_buffer (p1)->ip.save_rewrite_length = rw_len1; |
Chris Luke | f2868fc | 2016-06-14 16:26:22 -0400 | [diff] [blame] | 2461 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2462 | /* Check MTU of outgoing interface. */ |
| 2463 | error0 = |
| 2464 | (vlib_buffer_length_in_chain (vm, p0) > |
| 2465 | adj0[0]. |
| 2466 | rewrite_header.max_l3_packet_bytes ? IP4_ERROR_MTU_EXCEEDED : |
| 2467 | error0); |
| 2468 | error1 = |
| 2469 | (vlib_buffer_length_in_chain (vm, p1) > |
| 2470 | adj1[0]. |
| 2471 | rewrite_header.max_l3_packet_bytes ? IP4_ERROR_MTU_EXCEEDED : |
| 2472 | error1); |
Chris Luke | f2868fc | 2016-06-14 16:26:22 -0400 | [diff] [blame] | 2473 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2474 | /* Don't adjust the buffer for ttl issue; icmp-error node wants |
| 2475 | * to see the IP headerr */ |
| 2476 | if (PREDICT_TRUE (error0 == IP4_ERROR_NONE)) |
| 2477 | { |
Damjan Marion | 892e076 | 2016-12-09 18:52:05 +0100 | [diff] [blame] | 2478 | next0 = adj0[0].rewrite_header.next_index; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2479 | p0->current_data -= rw_len0; |
| 2480 | p0->current_length += rw_len0; |
| 2481 | tx_sw_if_index0 = adj0[0].rewrite_header.sw_if_index; |
| 2482 | vnet_buffer (p0)->sw_if_index[VLIB_TX] = tx_sw_if_index0; |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 2483 | |
Neale Ranns | b069a69 | 2017-03-15 12:34:25 -0400 | [diff] [blame] | 2484 | if (PREDICT_FALSE |
| 2485 | (adj0[0].rewrite_header.flags & VNET_REWRITE_HAS_FEATURES)) |
| 2486 | vnet_feature_arc_start (lm->output_feature_arc_index, |
| 2487 | tx_sw_if_index0, &next0, p0); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2488 | } |
| 2489 | if (PREDICT_TRUE (error1 == IP4_ERROR_NONE)) |
| 2490 | { |
Damjan Marion | 892e076 | 2016-12-09 18:52:05 +0100 | [diff] [blame] | 2491 | next1 = adj1[0].rewrite_header.next_index; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2492 | p1->current_data -= rw_len1; |
| 2493 | p1->current_length += rw_len1; |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 2494 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2495 | tx_sw_if_index1 = adj1[0].rewrite_header.sw_if_index; |
| 2496 | vnet_buffer (p1)->sw_if_index[VLIB_TX] = tx_sw_if_index1; |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 2497 | |
Neale Ranns | b069a69 | 2017-03-15 12:34:25 -0400 | [diff] [blame] | 2498 | if (PREDICT_FALSE |
| 2499 | (adj1[0].rewrite_header.flags & VNET_REWRITE_HAS_FEATURES)) |
| 2500 | vnet_feature_arc_start (lm->output_feature_arc_index, |
| 2501 | tx_sw_if_index1, &next1, p1); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2502 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2503 | |
| 2504 | /* Guess we are only writing on simple Ethernet header. */ |
| 2505 | vnet_rewrite_two_headers (adj0[0], adj1[0], |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2506 | ip0, ip1, sizeof (ethernet_header_t)); |
Neale Ranns | 5e575b1 | 2016-10-03 09:40:25 +0100 | [diff] [blame] | 2507 | |
Neale Ranns | 044183f | 2017-01-24 01:34:25 -0800 | [diff] [blame] | 2508 | /* |
| 2509 | * Bump the per-adjacency counters |
| 2510 | */ |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 2511 | if (do_counters) |
| 2512 | { |
| 2513 | vlib_increment_combined_counter |
| 2514 | (&adjacency_counters, |
Damjan Marion | 586afd7 | 2017-04-05 19:18:20 +0200 | [diff] [blame] | 2515 | thread_index, |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 2516 | adj_index0, 1, |
| 2517 | vlib_buffer_length_in_chain (vm, p0) + rw_len0); |
Neale Ranns | 044183f | 2017-01-24 01:34:25 -0800 | [diff] [blame] | 2518 | |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 2519 | vlib_increment_combined_counter |
| 2520 | (&adjacency_counters, |
Damjan Marion | 586afd7 | 2017-04-05 19:18:20 +0200 | [diff] [blame] | 2521 | thread_index, |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 2522 | adj_index1, 1, |
| 2523 | vlib_buffer_length_in_chain (vm, p1) + rw_len1); |
| 2524 | } |
Neale Ranns | 044183f | 2017-01-24 01:34:25 -0800 | [diff] [blame] | 2525 | |
Neale Ranns | 5e575b1 | 2016-10-03 09:40:25 +0100 | [diff] [blame] | 2526 | if (is_midchain) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2527 | { |
| 2528 | adj0->sub_type.midchain.fixup_func (vm, adj0, p0); |
| 2529 | adj1->sub_type.midchain.fixup_func (vm, adj1, p1); |
| 2530 | } |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2531 | if (is_mcast) |
| 2532 | { |
| 2533 | /* |
| 2534 | * copy bytes from the IP address into the MAC rewrite |
| 2535 | */ |
Neale Ranns | 2e7fbcc | 2017-03-15 04:22:25 -0700 | [diff] [blame] | 2536 | vnet_fixup_one_header (adj0[0], &ip0->dst_address, ip0); |
| 2537 | vnet_fixup_one_header (adj1[0], &ip1->dst_address, ip1); |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2538 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2539 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2540 | vlib_validate_buffer_enqueue_x2 (vm, node, next_index, |
| 2541 | to_next, n_left_to_next, |
| 2542 | pi0, pi1, next0, next1); |
| 2543 | } |
| 2544 | |
| 2545 | while (n_left_from > 0 && n_left_to_next > 0) |
| 2546 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2547 | ip_adjacency_t *adj0; |
| 2548 | vlib_buffer_t *p0; |
| 2549 | ip4_header_t *ip0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2550 | u32 pi0, rw_len0, adj_index0, next0, error0, checksum0; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2551 | u32 tx_sw_if_index0; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2552 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2553 | pi0 = to_next[0] = from[0]; |
| 2554 | |
| 2555 | p0 = vlib_get_buffer (vm, pi0); |
| 2556 | |
Neale Ranns | f06aea5 | 2016-11-29 06:51:37 -0800 | [diff] [blame] | 2557 | adj_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX]; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2558 | |
Neale Ranns | 107e7d4 | 2017-04-11 09:55:19 -0700 | [diff] [blame] | 2559 | adj0 = adj_get (adj_index0); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2560 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2561 | ip0 = vlib_buffer_get_current (p0); |
| 2562 | |
| 2563 | error0 = IP4_ERROR_NONE; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2564 | next0 = IP4_REWRITE_NEXT_DROP; /* drop on error */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2565 | |
| 2566 | /* Decrement TTL & update checksum. */ |
Damjan Marion | 213b5aa | 2017-07-13 21:19:27 +0200 | [diff] [blame] | 2567 | if (PREDICT_TRUE (!(p0->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED))) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2568 | { |
| 2569 | i32 ttl0 = ip0->ttl; |
| 2570 | |
| 2571 | checksum0 = ip0->checksum + clib_host_to_net_u16 (0x0100); |
| 2572 | |
| 2573 | checksum0 += checksum0 >= 0xffff; |
| 2574 | |
| 2575 | ip0->checksum = checksum0; |
| 2576 | |
| 2577 | ASSERT (ip0->ttl > 0); |
| 2578 | |
| 2579 | ttl0 -= 1; |
| 2580 | |
| 2581 | ip0->ttl = ttl0; |
| 2582 | |
Dave Barach | 2c0a4f4 | 2017-06-29 09:30:15 -0400 | [diff] [blame] | 2583 | ASSERT ((ip0->checksum == ip4_header_checksum (ip0)) || |
Damjan Marion | fb3288f | 2017-07-19 15:07:10 +0200 | [diff] [blame] | 2584 | (p0->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2585 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2586 | if (PREDICT_FALSE (ttl0 <= 0)) |
| 2587 | { |
| 2588 | /* |
| 2589 | * If the ttl drops below 1 when forwarding, generate |
| 2590 | * an ICMP response. |
| 2591 | */ |
| 2592 | error0 = IP4_ERROR_TIME_EXPIRED; |
| 2593 | next0 = IP4_REWRITE_NEXT_ICMP_ERROR; |
| 2594 | vnet_buffer (p0)->sw_if_index[VLIB_TX] = (u32) ~ 0; |
| 2595 | icmp4_error_set_vnet_buffer (p0, ICMP4_time_exceeded, |
| 2596 | ICMP4_time_exceeded_ttl_exceeded_in_transit, |
| 2597 | 0); |
| 2598 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2599 | } |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2600 | else |
| 2601 | { |
Damjan Marion | 213b5aa | 2017-07-13 21:19:27 +0200 | [diff] [blame] | 2602 | p0->flags &= ~VNET_BUFFER_F_LOCALLY_ORIGINATED; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2603 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2604 | |
Neale Ranns | 1bd0109 | 2017-03-15 15:41:17 -0400 | [diff] [blame] | 2605 | if (do_counters) |
| 2606 | vlib_prefetch_combined_counter (&adjacency_counters, |
Damjan Marion | 586afd7 | 2017-04-05 19:18:20 +0200 | [diff] [blame] | 2607 | thread_index, adj_index0); |
Neale Ranns | 044183f | 2017-01-24 01:34:25 -0800 | [diff] [blame] | 2608 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2609 | /* Guess we are only writing on simple Ethernet header. */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2610 | vnet_rewrite_one_header (adj0[0], ip0, sizeof (ethernet_header_t)); |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2611 | if (is_mcast) |
| 2612 | { |
| 2613 | /* |
| 2614 | * copy bytes from the IP address into the MAC rewrite |
| 2615 | */ |
Neale Ranns | 2e7fbcc | 2017-03-15 04:22:25 -0700 | [diff] [blame] | 2616 | vnet_fixup_one_header (adj0[0], &ip0->dst_address, ip0); |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2617 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2618 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2619 | /* Update packet buffer attributes/set output interface. */ |
| 2620 | rw_len0 = adj0[0].rewrite_header.data_bytes; |
| 2621 | vnet_buffer (p0)->ip.save_rewrite_length = rw_len0; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2622 | |
Neale Ranns | 1bd0109 | 2017-03-15 15:41:17 -0400 | [diff] [blame] | 2623 | if (do_counters) |
| 2624 | vlib_increment_combined_counter |
| 2625 | (&adjacency_counters, |
Damjan Marion | 586afd7 | 2017-04-05 19:18:20 +0200 | [diff] [blame] | 2626 | thread_index, adj_index0, 1, |
Neale Ranns | 1bd0109 | 2017-03-15 15:41:17 -0400 | [diff] [blame] | 2627 | vlib_buffer_length_in_chain (vm, p0) + rw_len0); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2628 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2629 | /* Check MTU of outgoing interface. */ |
| 2630 | error0 = (vlib_buffer_length_in_chain (vm, p0) |
| 2631 | > adj0[0].rewrite_header.max_l3_packet_bytes |
| 2632 | ? IP4_ERROR_MTU_EXCEEDED : error0); |
Chris Luke | 816f3e1 | 2016-06-14 16:24:47 -0400 | [diff] [blame] | 2633 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2634 | p0->error = error_node->errors[error0]; |
Chris Luke | 816f3e1 | 2016-06-14 16:24:47 -0400 | [diff] [blame] | 2635 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2636 | /* Don't adjust the buffer for ttl issue; icmp-error node wants |
| 2637 | * to see the IP headerr */ |
| 2638 | if (PREDICT_TRUE (error0 == IP4_ERROR_NONE)) |
| 2639 | { |
| 2640 | p0->current_data -= rw_len0; |
| 2641 | p0->current_length += rw_len0; |
| 2642 | tx_sw_if_index0 = adj0[0].rewrite_header.sw_if_index; |
Chris Luke | 816f3e1 | 2016-06-14 16:24:47 -0400 | [diff] [blame] | 2643 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2644 | vnet_buffer (p0)->sw_if_index[VLIB_TX] = tx_sw_if_index0; |
| 2645 | next0 = adj0[0].rewrite_header.next_index; |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 2646 | |
Neale Ranns | 5e575b1 | 2016-10-03 09:40:25 +0100 | [diff] [blame] | 2647 | if (is_midchain) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2648 | { |
| 2649 | adj0->sub_type.midchain.fixup_func (vm, adj0, p0); |
Neale Ranns | 5e575b1 | 2016-10-03 09:40:25 +0100 | [diff] [blame] | 2650 | } |
| 2651 | |
Neale Ranns | b069a69 | 2017-03-15 12:34:25 -0400 | [diff] [blame] | 2652 | if (PREDICT_FALSE |
| 2653 | (adj0[0].rewrite_header.flags & VNET_REWRITE_HAS_FEATURES)) |
| 2654 | vnet_feature_arc_start (lm->output_feature_arc_index, |
| 2655 | tx_sw_if_index0, &next0, p0); |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 2656 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2657 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2658 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2659 | from += 1; |
| 2660 | n_left_from -= 1; |
| 2661 | to_next += 1; |
| 2662 | n_left_to_next -= 1; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2663 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2664 | vlib_validate_buffer_enqueue_x1 (vm, node, next_index, |
| 2665 | to_next, n_left_to_next, |
| 2666 | pi0, next0); |
| 2667 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2668 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2669 | vlib_put_next_frame (vm, node, next_index, n_left_to_next); |
| 2670 | } |
| 2671 | |
| 2672 | /* Need to do trace after rewrites to pick up new packet data. */ |
| 2673 | if (node->flags & VLIB_NODE_FLAG_TRACE) |
Neale Ranns | f06aea5 | 2016-11-29 06:51:37 -0800 | [diff] [blame] | 2674 | ip4_forward_next_trace (vm, node, frame, VLIB_TX); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2675 | |
| 2676 | return frame->n_vectors; |
| 2677 | } |
| 2678 | |
Dave Barach | 132d51d | 2016-07-07 10:10:17 -0400 | [diff] [blame] | 2679 | |
Neale Ranns | f06aea5 | 2016-11-29 06:51:37 -0800 | [diff] [blame] | 2680 | /** @brief IPv4 rewrite node. |
| 2681 | @node ip4-rewrite |
Dave Barach | 132d51d | 2016-07-07 10:10:17 -0400 | [diff] [blame] | 2682 | |
| 2683 | This is the IPv4 transit-rewrite node: decrement TTL, fix the ipv4 |
| 2684 | header checksum, fetch the ip adjacency, check the outbound mtu, |
| 2685 | apply the adjacency rewrite, and send pkts to the adjacency |
| 2686 | rewrite header's rewrite_next_index. |
| 2687 | |
| 2688 | @param vm vlib_main_t corresponding to the current thread |
| 2689 | @param node vlib_node_runtime_t |
| 2690 | @param frame vlib_frame_t whose contents should be dispatched |
| 2691 | |
| 2692 | @par Graph mechanics: buffer metadata, next index usage |
| 2693 | |
| 2694 | @em Uses: |
| 2695 | - <code>vnet_buffer(b)->ip.adj_index[VLIB_TX]</code> |
| 2696 | - the rewrite adjacency index |
| 2697 | - <code>adj->lookup_next_index</code> |
| 2698 | - Must be IP_LOOKUP_NEXT_REWRITE or IP_LOOKUP_NEXT_ARP, otherwise |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2699 | the packet will be dropped. |
Dave Barach | 132d51d | 2016-07-07 10:10:17 -0400 | [diff] [blame] | 2700 | - <code>adj->rewrite_header</code> |
| 2701 | - Rewrite string length, rewrite string, next_index |
| 2702 | |
| 2703 | @em Sets: |
| 2704 | - <code>b->current_data, b->current_length</code> |
| 2705 | - Updated net of applying the rewrite string |
| 2706 | |
| 2707 | <em>Next Indices:</em> |
| 2708 | - <code> adj->rewrite_header.next_index </code> |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2709 | or @c error-drop |
Dave Barach | 132d51d | 2016-07-07 10:10:17 -0400 | [diff] [blame] | 2710 | */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2711 | static uword |
Neale Ranns | f06aea5 | 2016-11-29 06:51:37 -0800 | [diff] [blame] | 2712 | ip4_rewrite (vlib_main_t * vm, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2713 | vlib_node_runtime_t * node, vlib_frame_t * frame) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2714 | { |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 2715 | if (adj_are_counters_enabled ()) |
| 2716 | return ip4_rewrite_inline (vm, node, frame, 1, 0, 0); |
| 2717 | else |
| 2718 | return ip4_rewrite_inline (vm, node, frame, 0, 0, 0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2719 | } |
| 2720 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2721 | static uword |
| 2722 | ip4_midchain (vlib_main_t * vm, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2723 | vlib_node_runtime_t * node, vlib_frame_t * frame) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2724 | { |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 2725 | if (adj_are_counters_enabled ()) |
| 2726 | return ip4_rewrite_inline (vm, node, frame, 1, 1, 0); |
| 2727 | else |
| 2728 | return ip4_rewrite_inline (vm, node, frame, 0, 1, 0); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2729 | } |
| 2730 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2731 | static uword |
| 2732 | ip4_rewrite_mcast (vlib_main_t * vm, |
| 2733 | vlib_node_runtime_t * node, vlib_frame_t * frame) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2734 | { |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 2735 | if (adj_are_counters_enabled ()) |
| 2736 | return ip4_rewrite_inline (vm, node, frame, 1, 0, 1); |
| 2737 | else |
| 2738 | return ip4_rewrite_inline (vm, node, frame, 0, 0, 1); |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2739 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2740 | |
Neale Ranns | 0f26c5a | 2017-03-01 15:12:11 -0800 | [diff] [blame] | 2741 | static uword |
| 2742 | ip4_mcast_midchain (vlib_main_t * vm, |
| 2743 | vlib_node_runtime_t * node, vlib_frame_t * frame) |
| 2744 | { |
| 2745 | if (adj_are_counters_enabled ()) |
| 2746 | return ip4_rewrite_inline (vm, node, frame, 1, 1, 1); |
| 2747 | else |
| 2748 | return ip4_rewrite_inline (vm, node, frame, 0, 1, 1); |
| 2749 | } |
| 2750 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2751 | /* *INDENT-OFF* */ |
| 2752 | VLIB_REGISTER_NODE (ip4_rewrite_node) = { |
| 2753 | .function = ip4_rewrite, |
| 2754 | .name = "ip4-rewrite", |
| 2755 | .vector_size = sizeof (u32), |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2756 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2757 | .format_trace = format_ip4_rewrite_trace, |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2758 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2759 | .n_next_nodes = 2, |
| 2760 | .next_nodes = { |
| 2761 | [IP4_REWRITE_NEXT_DROP] = "error-drop", |
| 2762 | [IP4_REWRITE_NEXT_ICMP_ERROR] = "ip4-icmp-error", |
| 2763 | }, |
| 2764 | }; |
| 2765 | VLIB_NODE_FUNCTION_MULTIARCH (ip4_rewrite_node, ip4_rewrite) |
| 2766 | |
| 2767 | VLIB_REGISTER_NODE (ip4_rewrite_mcast_node) = { |
| 2768 | .function = ip4_rewrite_mcast, |
| 2769 | .name = "ip4-rewrite-mcast", |
| 2770 | .vector_size = sizeof (u32), |
| 2771 | |
| 2772 | .format_trace = format_ip4_rewrite_trace, |
| 2773 | .sibling_of = "ip4-rewrite", |
| 2774 | }; |
| 2775 | VLIB_NODE_FUNCTION_MULTIARCH (ip4_rewrite_mcast_node, ip4_rewrite_mcast) |
| 2776 | |
Neale Ranns | 0f26c5a | 2017-03-01 15:12:11 -0800 | [diff] [blame] | 2777 | VLIB_REGISTER_NODE (ip4_mcast_midchain_node, static) = { |
| 2778 | .function = ip4_mcast_midchain, |
| 2779 | .name = "ip4-mcast-midchain", |
| 2780 | .vector_size = sizeof (u32), |
| 2781 | |
| 2782 | .format_trace = format_ip4_rewrite_trace, |
| 2783 | .sibling_of = "ip4-rewrite", |
| 2784 | }; |
| 2785 | VLIB_NODE_FUNCTION_MULTIARCH (ip4_mcast_midchain_node, ip4_mcast_midchain) |
| 2786 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2787 | VLIB_REGISTER_NODE (ip4_midchain_node) = { |
| 2788 | .function = ip4_midchain, |
| 2789 | .name = "ip4-midchain", |
| 2790 | .vector_size = sizeof (u32), |
| 2791 | .format_trace = format_ip4_forward_next_trace, |
| 2792 | .sibling_of = "ip4-rewrite", |
| 2793 | }; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2794 | VLIB_NODE_FUNCTION_MULTIARCH (ip4_midchain_node, ip4_midchain); |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2795 | /* *INDENT-ON */ |
Damjan Marion | 1c80e83 | 2016-05-11 23:07:18 +0200 | [diff] [blame] | 2796 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2797 | static clib_error_t * |
| 2798 | add_del_interface_table (vlib_main_t * vm, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2799 | unformat_input_t * input, vlib_cli_command_t * cmd) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2800 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2801 | vnet_main_t *vnm = vnet_get_main (); |
Neale Ranns | 4008ac9 | 2017-02-13 23:20:04 -0800 | [diff] [blame] | 2802 | ip_interface_address_t *ia; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2803 | clib_error_t *error = 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2804 | u32 sw_if_index, table_id; |
| 2805 | |
| 2806 | sw_if_index = ~0; |
| 2807 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2808 | if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index)) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2809 | { |
| 2810 | error = clib_error_return (0, "unknown interface `%U'", |
| 2811 | format_unformat_error, input); |
| 2812 | goto done; |
| 2813 | } |
| 2814 | |
| 2815 | if (unformat (input, "%d", &table_id)) |
| 2816 | ; |
| 2817 | else |
| 2818 | { |
| 2819 | error = clib_error_return (0, "expected table id `%U'", |
| 2820 | format_unformat_error, input); |
| 2821 | goto done; |
| 2822 | } |
| 2823 | |
Neale Ranns | 4008ac9 | 2017-02-13 23:20:04 -0800 | [diff] [blame] | 2824 | /* |
| 2825 | * If the interface already has in IP address, then a change int |
| 2826 | * VRF is not allowed. The IP address applied must first be removed. |
| 2827 | * We do not do that automatically here, since VPP has no knowledge |
| 2828 | * of whether thoses subnets are valid in the destination VRF. |
| 2829 | */ |
| 2830 | /* *INDENT-OFF* */ |
| 2831 | foreach_ip_interface_address (&ip4_main.lookup_main, |
| 2832 | ia, sw_if_index, |
| 2833 | 1 /* honor unnumbered */, |
| 2834 | ({ |
| 2835 | ip4_address_t * a; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2836 | |
Neale Ranns | 4008ac9 | 2017-02-13 23:20:04 -0800 | [diff] [blame] | 2837 | a = ip_interface_address_get_address (&ip4_main.lookup_main, ia); |
| 2838 | error = clib_error_return (0, "interface %U has address %U", |
| 2839 | format_vnet_sw_if_index_name, vnm, |
| 2840 | sw_if_index, |
| 2841 | format_ip4_address, a); |
| 2842 | goto done; |
| 2843 | })); |
| 2844 | /* *INDENT-ON* */ |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2845 | |
Neale Ranns | 4008ac9 | 2017-02-13 23:20:04 -0800 | [diff] [blame] | 2846 | { |
| 2847 | ip4_main_t *im = &ip4_main; |
| 2848 | u32 fib_index; |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2849 | |
Neale Ranns | 4008ac9 | 2017-02-13 23:20:04 -0800 | [diff] [blame] | 2850 | fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, table_id); |
| 2851 | |
| 2852 | vec_validate (im->fib_index_by_sw_if_index, sw_if_index); |
| 2853 | im->fib_index_by_sw_if_index[sw_if_index] = fib_index; |
| 2854 | |
| 2855 | fib_index = mfib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, table_id); |
| 2856 | vec_validate (im->mfib_index_by_sw_if_index, sw_if_index); |
| 2857 | im->mfib_index_by_sw_if_index[sw_if_index] = fib_index; |
| 2858 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2859 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2860 | done: |
Neale Ranns | 4008ac9 | 2017-02-13 23:20:04 -0800 | [diff] [blame] | 2861 | return error; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2862 | } |
| 2863 | |
Keith Burns (alagalah) | 6ef7bb9 | 2016-09-10 14:55:04 -0700 | [diff] [blame] | 2864 | /*? |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 2865 | * Place the indicated interface into the supplied IPv4 FIB table (also known |
| 2866 | * as a VRF). If the FIB table does not exist, this command creates it. To |
| 2867 | * display the current IPv4 FIB table, use the command '<em>show ip fib</em>'. |
| 2868 | * FIB table will only be displayed if a route has been added to the table, or |
| 2869 | * an IP Address is assigned to an interface in the table (which adds a route |
Billy McFall | ebb9a6a | 2016-10-17 11:35:32 -0400 | [diff] [blame] | 2870 | * automatically). |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 2871 | * |
Neale Ranns | 4008ac9 | 2017-02-13 23:20:04 -0800 | [diff] [blame] | 2872 | * @note IP addresses added after setting the interface IP table are added to |
| 2873 | * the indicated FIB table. If an IP address is added prior to changing the |
| 2874 | * table then this is an error. The control plane must remove these addresses |
| 2875 | * first and then change the table. VPP will not automatically move the |
| 2876 | * addresses from the old to the new table as it does not know the validity |
| 2877 | * of such a change. |
Keith Burns (alagalah) | 6ef7bb9 | 2016-09-10 14:55:04 -0700 | [diff] [blame] | 2878 | * |
| 2879 | * @cliexpar |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 2880 | * Example of how to add an interface to an IPv4 FIB table (where 2 is the table-id): |
| 2881 | * @cliexcmd{set interface ip table GigabitEthernet2/0/0 2} |
Keith Burns (alagalah) | 6ef7bb9 | 2016-09-10 14:55:04 -0700 | [diff] [blame] | 2882 | ?*/ |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 2883 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2884 | VLIB_CLI_COMMAND (set_interface_ip_table_command, static) = |
| 2885 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2886 | .path = "set interface ip table", |
| 2887 | .function = add_del_interface_table, |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 2888 | .short_help = "set interface ip table <interface> <table-id>", |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2889 | }; |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 2890 | /* *INDENT-ON* */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2891 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2892 | int |
| 2893 | ip4_lookup_validate (ip4_address_t * a, u32 fib_index0) |
| 2894 | { |
| 2895 | ip4_fib_mtrie_t *mtrie0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2896 | ip4_fib_mtrie_leaf_t leaf0; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2897 | u32 lbi0; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2898 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2899 | mtrie0 = &ip4_fib_get (fib_index0)->mtrie; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2900 | |
Neale Ranns | 04a75e3 | 2017-03-23 06:46:01 -0700 | [diff] [blame] | 2901 | leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, a); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2902 | leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, a, 2); |
| 2903 | leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, a, 3); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2904 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2905 | lbi0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2906 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2907 | 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] | 2908 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2909 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2910 | static clib_error_t * |
| 2911 | test_lookup_command_fn (vlib_main_t * vm, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2912 | unformat_input_t * input, vlib_cli_command_t * cmd) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2913 | { |
Billy McFall | 309fe06 | 2016-10-14 07:37:33 -0400 | [diff] [blame] | 2914 | ip4_fib_t *fib; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2915 | u32 table_id = 0; |
| 2916 | f64 count = 1; |
| 2917 | u32 n; |
| 2918 | int i; |
| 2919 | ip4_address_t ip4_base_address; |
| 2920 | u64 errors = 0; |
| 2921 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2922 | while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| 2923 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2924 | if (unformat (input, "table %d", &table_id)) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2925 | { |
| 2926 | /* Make sure the entry exists. */ |
| 2927 | fib = ip4_fib_get (table_id); |
| 2928 | if ((fib) && (fib->index != table_id)) |
| 2929 | return clib_error_return (0, "<fib-index> %d does not exist", |
| 2930 | table_id); |
| 2931 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2932 | else if (unformat (input, "count %f", &count)) |
| 2933 | ; |
| 2934 | |
| 2935 | else if (unformat (input, "%U", |
| 2936 | unformat_ip4_address, &ip4_base_address)) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2937 | ; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2938 | else |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2939 | return clib_error_return (0, "unknown input `%U'", |
| 2940 | format_unformat_error, input); |
| 2941 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2942 | |
| 2943 | n = count; |
| 2944 | |
| 2945 | for (i = 0; i < n; i++) |
| 2946 | { |
| 2947 | if (!ip4_lookup_validate (&ip4_base_address, table_id)) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2948 | errors++; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2949 | |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2950 | ip4_base_address.as_u32 = |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2951 | clib_host_to_net_u32 (1 + |
| 2952 | clib_net_to_host_u32 (ip4_base_address.as_u32)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2953 | } |
| 2954 | |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2955 | if (errors) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2956 | vlib_cli_output (vm, "%llu errors out of %d lookups\n", errors, n); |
| 2957 | else |
| 2958 | vlib_cli_output (vm, "No errors in %d lookups\n", n); |
| 2959 | |
| 2960 | return 0; |
| 2961 | } |
| 2962 | |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 2963 | /*? |
| 2964 | * Perform a lookup of an IPv4 Address (or range of addresses) in the |
| 2965 | * given FIB table to determine if there is a conflict with the |
| 2966 | * adjacency table. The fib-id can be determined by using the |
| 2967 | * '<em>show ip fib</em>' command. If fib-id is not entered, default value |
| 2968 | * of 0 is used. |
| 2969 | * |
| 2970 | * @todo This command uses fib-id, other commands use table-id (not |
| 2971 | * just a name, they are different indexes). Would like to change this |
| 2972 | * to table-id for consistency. |
| 2973 | * |
| 2974 | * @cliexpar |
| 2975 | * Example of how to run the test lookup command: |
| 2976 | * @cliexstart{test lookup 172.16.1.1 table 1 count 2} |
| 2977 | * No errors in 2 lookups |
| 2978 | * @cliexend |
| 2979 | ?*/ |
| 2980 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2981 | VLIB_CLI_COMMAND (lookup_test_command, static) = |
| 2982 | { |
| 2983 | .path = "test lookup", |
| 2984 | .short_help = "test lookup <ipv4-addr> [table <fib-id>] [count <nn>]", |
| 2985 | .function = test_lookup_command_fn, |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2986 | }; |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 2987 | /* *INDENT-ON* */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2988 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2989 | int |
| 2990 | vnet_set_ip4_flow_hash (u32 table_id, u32 flow_hash_config) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2991 | { |
Neale Ranns | 107e7d4 | 2017-04-11 09:55:19 -0700 | [diff] [blame] | 2992 | u32 fib_index; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2993 | |
Neale Ranns | 107e7d4 | 2017-04-11 09:55:19 -0700 | [diff] [blame] | 2994 | fib_index = fib_table_find (FIB_PROTOCOL_IP4, table_id); |
| 2995 | |
| 2996 | if (~0 == fib_index) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2997 | return VNET_API_ERROR_NO_SUCH_FIB; |
| 2998 | |
Neale Ranns | 227038a | 2017-04-21 01:07:59 -0700 | [diff] [blame] | 2999 | fib_table_set_flow_hash_config (fib_index, FIB_PROTOCOL_IP4, |
| 3000 | flow_hash_config); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3001 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3002 | return 0; |
| 3003 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 3004 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3005 | static clib_error_t * |
| 3006 | set_ip_flow_hash_command_fn (vlib_main_t * vm, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3007 | unformat_input_t * input, |
| 3008 | vlib_cli_command_t * cmd) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3009 | { |
| 3010 | int matched = 0; |
| 3011 | u32 table_id = 0; |
| 3012 | u32 flow_hash_config = 0; |
| 3013 | int rv; |
| 3014 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3015 | while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| 3016 | { |
| 3017 | if (unformat (input, "table %d", &table_id)) |
| 3018 | matched = 1; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3019 | #define _(a,v) \ |
| 3020 | else if (unformat (input, #a)) { flow_hash_config |= v; matched=1;} |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3021 | foreach_flow_hash_bit |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3022 | #undef _ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3023 | else |
| 3024 | break; |
| 3025 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 3026 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3027 | if (matched == 0) |
| 3028 | return clib_error_return (0, "unknown input `%U'", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3029 | format_unformat_error, input); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 3030 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3031 | rv = vnet_set_ip4_flow_hash (table_id, flow_hash_config); |
| 3032 | switch (rv) |
| 3033 | { |
| 3034 | case 0: |
| 3035 | break; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 3036 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3037 | case VNET_API_ERROR_NO_SUCH_FIB: |
| 3038 | return clib_error_return (0, "no such FIB table %d", table_id); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 3039 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3040 | default: |
| 3041 | clib_warning ("BUG: illegal flow hash config 0x%x", flow_hash_config); |
| 3042 | break; |
| 3043 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 3044 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3045 | return 0; |
| 3046 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 3047 | |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 3048 | /*? |
| 3049 | * Configure the set of IPv4 fields used by the flow hash. |
| 3050 | * |
| 3051 | * @cliexpar |
| 3052 | * Example of how to set the flow hash on a given table: |
| 3053 | * @cliexcmd{set ip flow-hash table 7 dst sport dport proto} |
| 3054 | * Example of display the configured flow hash: |
| 3055 | * @cliexstart{show ip fib} |
Billy McFall | ebb9a6a | 2016-10-17 11:35:32 -0400 | [diff] [blame] | 3056 | * ipv4-VRF:0, fib_index 0, flow hash: src dst sport dport proto |
| 3057 | * 0.0.0.0/0 |
| 3058 | * unicast-ip4-chain |
| 3059 | * [@0]: dpo-load-balance: [index:0 buckets:1 uRPF:0 to:[0:0]] |
| 3060 | * [0] [@0]: dpo-drop ip6 |
| 3061 | * 0.0.0.0/32 |
| 3062 | * unicast-ip4-chain |
| 3063 | * [@0]: dpo-load-balance: [index:1 buckets:1 uRPF:1 to:[0:0]] |
| 3064 | * [0] [@0]: dpo-drop ip6 |
| 3065 | * 224.0.0.0/8 |
| 3066 | * unicast-ip4-chain |
| 3067 | * [@0]: dpo-load-balance: [index:3 buckets:1 uRPF:3 to:[0:0]] |
| 3068 | * [0] [@0]: dpo-drop ip6 |
| 3069 | * 6.0.1.2/32 |
| 3070 | * unicast-ip4-chain |
| 3071 | * [@0]: dpo-load-balance: [index:30 buckets:1 uRPF:29 to:[0:0]] |
| 3072 | * [0] [@3]: arp-ipv4: via 6.0.0.1 af_packet0 |
| 3073 | * 7.0.0.1/32 |
| 3074 | * unicast-ip4-chain |
| 3075 | * [@0]: dpo-load-balance: [index:31 buckets:4 uRPF:30 to:[0:0]] |
| 3076 | * [0] [@3]: arp-ipv4: via 6.0.0.2 af_packet0 |
| 3077 | * [1] [@3]: arp-ipv4: via 6.0.0.2 af_packet0 |
| 3078 | * [2] [@3]: arp-ipv4: via 6.0.0.2 af_packet0 |
| 3079 | * [3] [@3]: arp-ipv4: via 6.0.0.1 af_packet0 |
| 3080 | * 240.0.0.0/8 |
| 3081 | * unicast-ip4-chain |
| 3082 | * [@0]: dpo-load-balance: [index:2 buckets:1 uRPF:2 to:[0:0]] |
| 3083 | * [0] [@0]: dpo-drop ip6 |
| 3084 | * 255.255.255.255/32 |
| 3085 | * unicast-ip4-chain |
| 3086 | * [@0]: dpo-load-balance: [index:4 buckets:1 uRPF:4 to:[0:0]] |
| 3087 | * [0] [@0]: dpo-drop ip6 |
| 3088 | * ipv4-VRF:7, fib_index 1, flow hash: dst sport dport proto |
| 3089 | * 0.0.0.0/0 |
| 3090 | * unicast-ip4-chain |
| 3091 | * [@0]: dpo-load-balance: [index:12 buckets:1 uRPF:11 to:[0:0]] |
| 3092 | * [0] [@0]: dpo-drop ip6 |
| 3093 | * 0.0.0.0/32 |
| 3094 | * unicast-ip4-chain |
| 3095 | * [@0]: dpo-load-balance: [index:13 buckets:1 uRPF:12 to:[0:0]] |
| 3096 | * [0] [@0]: dpo-drop ip6 |
| 3097 | * 172.16.1.0/24 |
| 3098 | * unicast-ip4-chain |
| 3099 | * [@0]: dpo-load-balance: [index:17 buckets:1 uRPF:16 to:[0:0]] |
| 3100 | * [0] [@4]: ipv4-glean: af_packet0 |
| 3101 | * 172.16.1.1/32 |
| 3102 | * unicast-ip4-chain |
| 3103 | * [@0]: dpo-load-balance: [index:18 buckets:1 uRPF:17 to:[1:84]] |
| 3104 | * [0] [@2]: dpo-receive: 172.16.1.1 on af_packet0 |
| 3105 | * 172.16.1.2/32 |
| 3106 | * unicast-ip4-chain |
| 3107 | * [@0]: dpo-load-balance: [index:21 buckets:1 uRPF:20 to:[0:0]] |
| 3108 | * [0] [@5]: ipv4 via 172.16.1.2 af_packet0: IP4: 02:fe:9e:70:7a:2b -> 26:a5:f6:9c:3a:36 |
| 3109 | * 172.16.2.0/24 |
| 3110 | * unicast-ip4-chain |
| 3111 | * [@0]: dpo-load-balance: [index:19 buckets:1 uRPF:18 to:[0:0]] |
| 3112 | * [0] [@4]: ipv4-glean: af_packet1 |
| 3113 | * 172.16.2.1/32 |
| 3114 | * unicast-ip4-chain |
| 3115 | * [@0]: dpo-load-balance: [index:20 buckets:1 uRPF:19 to:[0:0]] |
| 3116 | * [0] [@2]: dpo-receive: 172.16.2.1 on af_packet1 |
| 3117 | * 224.0.0.0/8 |
| 3118 | * unicast-ip4-chain |
| 3119 | * [@0]: dpo-load-balance: [index:15 buckets:1 uRPF:14 to:[0:0]] |
| 3120 | * [0] [@0]: dpo-drop ip6 |
| 3121 | * 240.0.0.0/8 |
| 3122 | * unicast-ip4-chain |
| 3123 | * [@0]: dpo-load-balance: [index:14 buckets:1 uRPF:13 to:[0:0]] |
| 3124 | * [0] [@0]: dpo-drop ip6 |
| 3125 | * 255.255.255.255/32 |
| 3126 | * unicast-ip4-chain |
| 3127 | * [@0]: dpo-load-balance: [index:16 buckets:1 uRPF:15 to:[0:0]] |
| 3128 | * [0] [@0]: dpo-drop ip6 |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 3129 | * @cliexend |
| 3130 | ?*/ |
| 3131 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3132 | VLIB_CLI_COMMAND (set_ip_flow_hash_command, static) = |
| 3133 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3134 | .path = "set ip flow-hash", |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 3135 | .short_help = |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 3136 | "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] | 3137 | .function = set_ip_flow_hash_command_fn, |
| 3138 | }; |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 3139 | /* *INDENT-ON* */ |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 3140 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3141 | int |
| 3142 | vnet_set_ip4_classify_intfc (vlib_main_t * vm, u32 sw_if_index, |
| 3143 | u32 table_index) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3144 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3145 | vnet_main_t *vnm = vnet_get_main (); |
| 3146 | vnet_interface_main_t *im = &vnm->interface_main; |
| 3147 | ip4_main_t *ipm = &ip4_main; |
| 3148 | ip_lookup_main_t *lm = &ipm->lookup_main; |
| 3149 | vnet_classify_main_t *cm = &vnet_classify_main; |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 3150 | ip4_address_t *if_addr; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3151 | |
| 3152 | if (pool_is_free_index (im->sw_interfaces, sw_if_index)) |
| 3153 | return VNET_API_ERROR_NO_MATCHING_INTERFACE; |
| 3154 | |
| 3155 | if (table_index != ~0 && pool_is_free_index (cm->tables, table_index)) |
| 3156 | return VNET_API_ERROR_NO_SUCH_ENTRY; |
| 3157 | |
| 3158 | 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] | 3159 | 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] | 3160 | |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 3161 | if_addr = ip4_interface_first_address (ipm, sw_if_index, NULL); |
| 3162 | |
| 3163 | if (NULL != if_addr) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3164 | { |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 3165 | fib_prefix_t pfx = { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3166 | .fp_len = 32, |
| 3167 | .fp_proto = FIB_PROTOCOL_IP4, |
| 3168 | .fp_addr.ip4 = *if_addr, |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 3169 | }; |
| 3170 | u32 fib_index; |
| 3171 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3172 | fib_index = fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, |
| 3173 | sw_if_index); |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 3174 | |
| 3175 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3176 | if (table_index != (u32) ~ 0) |
| 3177 | { |
| 3178 | dpo_id_t dpo = DPO_INVALID; |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 3179 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3180 | dpo_set (&dpo, |
| 3181 | DPO_CLASSIFY, |
| 3182 | DPO_PROTO_IP4, |
| 3183 | classify_dpo_create (DPO_PROTO_IP4, table_index)); |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 3184 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3185 | fib_table_entry_special_dpo_add (fib_index, |
| 3186 | &pfx, |
| 3187 | FIB_SOURCE_CLASSIFY, |
| 3188 | FIB_ENTRY_FLAG_NONE, &dpo); |
| 3189 | dpo_reset (&dpo); |
| 3190 | } |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 3191 | else |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3192 | { |
| 3193 | fib_table_entry_special_remove (fib_index, |
| 3194 | &pfx, FIB_SOURCE_CLASSIFY); |
| 3195 | } |
| 3196 | } |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 3197 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3198 | return 0; |
| 3199 | } |
| 3200 | |
| 3201 | static clib_error_t * |
| 3202 | set_ip_classify_command_fn (vlib_main_t * vm, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3203 | unformat_input_t * input, |
| 3204 | vlib_cli_command_t * cmd) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3205 | { |
| 3206 | u32 table_index = ~0; |
| 3207 | int table_index_set = 0; |
| 3208 | u32 sw_if_index = ~0; |
| 3209 | int rv; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 3210 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3211 | while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| 3212 | { |
| 3213 | if (unformat (input, "table-index %d", &table_index)) |
| 3214 | table_index_set = 1; |
| 3215 | else if (unformat (input, "intfc %U", unformat_vnet_sw_interface, |
| 3216 | vnet_get_main (), &sw_if_index)) |
| 3217 | ; |
| 3218 | else |
| 3219 | break; |
| 3220 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 3221 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3222 | if (table_index_set == 0) |
| 3223 | return clib_error_return (0, "classify table-index must be specified"); |
| 3224 | |
| 3225 | if (sw_if_index == ~0) |
| 3226 | return clib_error_return (0, "interface / subif must be specified"); |
| 3227 | |
| 3228 | rv = vnet_set_ip4_classify_intfc (vm, sw_if_index, table_index); |
| 3229 | |
| 3230 | switch (rv) |
| 3231 | { |
| 3232 | case 0: |
| 3233 | break; |
| 3234 | |
| 3235 | case VNET_API_ERROR_NO_MATCHING_INTERFACE: |
| 3236 | return clib_error_return (0, "No such interface"); |
| 3237 | |
| 3238 | case VNET_API_ERROR_NO_SUCH_ENTRY: |
| 3239 | return clib_error_return (0, "No such classifier table"); |
| 3240 | } |
| 3241 | return 0; |
| 3242 | } |
| 3243 | |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 3244 | /*? |
| 3245 | * Assign a classification table to an interface. The classification |
| 3246 | * table is created using the '<em>classify table</em>' and '<em>classify session</em>' |
| 3247 | * commands. Once the table is create, use this command to filter packets |
| 3248 | * on an interface. |
| 3249 | * |
| 3250 | * @cliexpar |
| 3251 | * Example of how to assign a classification table to an interface: |
| 3252 | * @cliexcmd{set ip classify intfc GigabitEthernet2/0/0 table-index 1} |
| 3253 | ?*/ |
| 3254 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3255 | VLIB_CLI_COMMAND (set_ip_classify_command, static) = |
| 3256 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3257 | .path = "set ip classify", |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 3258 | .short_help = |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 3259 | "set ip classify intfc <interface> table-index <classify-idx>", |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3260 | .function = set_ip_classify_command_fn, |
| 3261 | }; |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 3262 | /* *INDENT-ON* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3263 | |
| 3264 | /* |
| 3265 | * fd.io coding-style-patch-verification: ON |
| 3266 | * |
| 3267 | * Local Variables: |
| 3268 | * eval: (c-set-style "gnu") |
| 3269 | * End: |
| 3270 | */ |