Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2015 Cisco and/or its affiliates. |
| 3 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | * you may not use this file except in compliance with the License. |
| 5 | * You may obtain a copy of the License at: |
| 6 | * |
| 7 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | * |
| 9 | * Unless required by applicable law or agreed to in writing, software |
| 10 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | * See the License for the specific language governing permissions and |
| 13 | * limitations under the License. |
| 14 | */ |
| 15 | /* |
| 16 | * ip/ip4_forward.c: IP v4 forwarding |
| 17 | * |
| 18 | * Copyright (c) 2008 Eliot Dresselhaus |
| 19 | * |
| 20 | * Permission is hereby granted, free of charge, to any person obtaining |
| 21 | * a copy of this software and associated documentation files (the |
| 22 | * "Software"), to deal in the Software without restriction, including |
| 23 | * without limitation the rights to use, copy, modify, merge, publish, |
| 24 | * distribute, sublicense, and/or sell copies of the Software, and to |
| 25 | * permit persons to whom the Software is furnished to do so, subject to |
| 26 | * the following conditions: |
| 27 | * |
| 28 | * The above copyright notice and this permission notice shall be |
| 29 | * included in all copies or substantial portions of the Software. |
| 30 | * |
| 31 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 32 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 33 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 34 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE |
| 35 | * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
| 36 | * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
| 37 | * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 38 | */ |
| 39 | |
| 40 | #include <vnet/vnet.h> |
| 41 | #include <vnet/ip/ip.h> |
Ole Troan | 313f7e2 | 2018-04-10 16:02:51 +0200 | [diff] [blame] | 42 | #include <vnet/ip/ip_frag.h> |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 43 | #include <vnet/ethernet/ethernet.h> /* for ethernet_header_t */ |
| 44 | #include <vnet/ethernet/arp_packet.h> /* for ethernet_arp_header_t */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 45 | #include <vnet/ppp/ppp.h> |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 46 | #include <vnet/srp/srp.h> /* for srp_hw_interface_class */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 47 | #include <vnet/api_errno.h> /* for API error numbers */ |
| 48 | #include <vnet/fib/fib_table.h> /* for FIB table and entry creation */ |
| 49 | #include <vnet/fib/fib_entry.h> /* for FIB table and entry creation */ |
| 50 | #include <vnet/fib/fib_urpf_list.h> /* for FIB uRPF check */ |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 51 | #include <vnet/fib/ip4_fib.h> |
Neale Ranns | 03c254e | 2020-03-17 14:25:10 +0000 | [diff] [blame] | 52 | #include <vnet/mfib/ip4_mfib.h> |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 53 | #include <vnet/dpo/load_balance.h> |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 54 | #include <vnet/dpo/load_balance_map.h> |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 55 | #include <vnet/dpo/classify_dpo.h> |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 56 | #include <vnet/mfib/mfib_table.h> /* for mFIB table and entry creation */ |
Neale Ranns | 4ec36c5 | 2020-03-31 09:21:29 -0400 | [diff] [blame] | 57 | #include <vnet/adj/adj_dp.h> |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 58 | |
Vijayabhaskar Katamreddy | acbde66 | 2018-01-23 13:39:40 -0800 | [diff] [blame] | 59 | #include <vnet/ip/ip4_forward.h> |
Neale Ranns | 25edf14 | 2019-03-22 08:12:48 +0000 | [diff] [blame] | 60 | #include <vnet/interface_output.h> |
Neale Ranns | ba4a5bf | 2020-01-09 06:43:14 +0000 | [diff] [blame] | 61 | #include <vnet/classify/vnet_classify.h> |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 62 | |
Chris Luke | 8e5b041 | 2016-07-26 13:06:10 -0400 | [diff] [blame] | 63 | /** @brief IPv4 lookup node. |
Dave Barach | 9770e20 | 2016-07-06 10:29:27 -0400 | [diff] [blame] | 64 | @node ip4-lookup |
| 65 | |
| 66 | This is the main IPv4 lookup dispatch node. |
| 67 | |
| 68 | @param vm vlib_main_t corresponding to the current thread |
| 69 | @param node vlib_node_runtime_t |
| 70 | @param frame vlib_frame_t whose contents should be dispatched |
| 71 | |
| 72 | @par Graph mechanics: buffer metadata, next index usage |
| 73 | |
| 74 | @em Uses: |
| 75 | - <code>vnet_buffer(b)->sw_if_index[VLIB_RX]</code> |
| 76 | - Indicates the @c sw_if_index value of the interface that the |
| 77 | packet was received on. |
| 78 | - <code>vnet_buffer(b)->sw_if_index[VLIB_TX]</code> |
| 79 | - When the value is @c ~0 then the node performs a longest prefix |
| 80 | match (LPM) for the packet destination address in the FIB attached |
| 81 | to the receive interface. |
| 82 | - Otherwise perform LPM for the packet destination address in the |
| 83 | indicated FIB. In this case <code>[VLIB_TX]</code> is a FIB index |
| 84 | value (0, 1, ...) and not a VRF id. |
| 85 | |
| 86 | @em Sets: |
| 87 | - <code>vnet_buffer(b)->ip.adj_index[VLIB_TX]</code> |
| 88 | - The lookup result adjacency index. |
| 89 | |
| 90 | <em>Next Index:</em> |
| 91 | - Dispatches the packet to the node index found in |
| 92 | ip_adjacency_t @c adj->lookup_next_index |
| 93 | (where @c adj is the lookup result adjacency). |
| 94 | */ |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 95 | VLIB_NODE_FN (ip4_lookup_node) (vlib_main_t * vm, vlib_node_runtime_t * node, |
| 96 | vlib_frame_t * frame) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 97 | { |
Neale Ranns | cb54e3c | 2019-06-19 07:14:10 +0000 | [diff] [blame] | 98 | return ip4_lookup_inline (vm, node, frame); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 99 | } |
| 100 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 101 | static u8 *format_ip4_lookup_trace (u8 * s, va_list * args); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 102 | |
Neale Ranns | f868632 | 2017-11-29 02:39:53 -0800 | [diff] [blame] | 103 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 104 | VLIB_REGISTER_NODE (ip4_lookup_node) = |
| 105 | { |
Neale Ranns | f868632 | 2017-11-29 02:39:53 -0800 | [diff] [blame] | 106 | .name = "ip4-lookup", |
| 107 | .vector_size = sizeof (u32), |
| 108 | .format_trace = format_ip4_lookup_trace, |
| 109 | .n_next_nodes = IP_LOOKUP_N_NEXT, |
| 110 | .next_nodes = IP4_LOOKUP_NEXT_NODES, |
| 111 | }; |
| 112 | /* *INDENT-ON* */ |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 113 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 114 | VLIB_NODE_FN (ip4_load_balance_node) (vlib_main_t * vm, |
| 115 | vlib_node_runtime_t * node, |
| 116 | vlib_frame_t * frame) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 117 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 118 | vlib_combined_counter_main_t *cm = &load_balance_main.lbm_via_counters; |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 119 | u32 n_left, *from; |
Damjan Marion | 067cd62 | 2018-07-11 12:47:43 +0200 | [diff] [blame] | 120 | u32 thread_index = vm->thread_index; |
Zhiyong Yang | 6fec8ea | 2019-05-05 22:52:43 +0800 | [diff] [blame] | 121 | vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs; |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 122 | u16 nexts[VLIB_FRAME_SIZE], *next; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 123 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 124 | from = vlib_frame_vector_args (frame); |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 125 | n_left = frame->n_vectors; |
| 126 | next = nexts; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 127 | |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 128 | vlib_get_buffers (vm, from, bufs, n_left); |
| 129 | |
| 130 | while (n_left >= 4) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 131 | { |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 132 | const load_balance_t *lb0, *lb1; |
| 133 | const ip4_header_t *ip0, *ip1; |
| 134 | u32 lbi0, hc0, lbi1, hc1; |
| 135 | const dpo_id_t *dpo0, *dpo1; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 136 | |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 137 | /* Prefetch next iteration. */ |
| 138 | { |
| 139 | vlib_prefetch_buffer_header (b[2], LOAD); |
| 140 | vlib_prefetch_buffer_header (b[3], LOAD); |
| 141 | |
| 142 | CLIB_PREFETCH (b[2]->data, sizeof (ip0[0]), LOAD); |
| 143 | CLIB_PREFETCH (b[3]->data, sizeof (ip0[0]), LOAD); |
| 144 | } |
| 145 | |
| 146 | ip0 = vlib_buffer_get_current (b[0]); |
| 147 | ip1 = vlib_buffer_get_current (b[1]); |
| 148 | lbi0 = vnet_buffer (b[0])->ip.adj_index[VLIB_TX]; |
| 149 | lbi1 = vnet_buffer (b[1])->ip.adj_index[VLIB_TX]; |
| 150 | |
| 151 | lb0 = load_balance_get (lbi0); |
| 152 | lb1 = load_balance_get (lbi1); |
| 153 | |
| 154 | /* |
| 155 | * this node is for via FIBs we can re-use the hash value from the |
| 156 | * to node if present. |
| 157 | * We don't want to use the same hash value at each level in the recursion |
| 158 | * graph as that would lead to polarisation |
| 159 | */ |
| 160 | hc0 = hc1 = 0; |
| 161 | |
| 162 | if (PREDICT_FALSE (lb0->lb_n_buckets > 1)) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 163 | { |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 164 | if (PREDICT_TRUE (vnet_buffer (b[0])->ip.flow_hash)) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 165 | { |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 166 | hc0 = vnet_buffer (b[0])->ip.flow_hash = |
| 167 | vnet_buffer (b[0])->ip.flow_hash >> 1; |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 168 | } |
| 169 | else |
| 170 | { |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 171 | hc0 = vnet_buffer (b[0])->ip.flow_hash = |
| 172 | ip4_compute_flow_hash (ip0, lb0->lb_hash_config); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 173 | } |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 174 | dpo0 = load_balance_get_fwd_bucket |
| 175 | (lb0, (hc0 & (lb0->lb_n_buckets_minus_1))); |
| 176 | } |
| 177 | else |
| 178 | { |
| 179 | dpo0 = load_balance_get_bucket_i (lb0, 0); |
| 180 | } |
| 181 | if (PREDICT_FALSE (lb1->lb_n_buckets > 1)) |
| 182 | { |
| 183 | if (PREDICT_TRUE (vnet_buffer (b[1])->ip.flow_hash)) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 184 | { |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 185 | hc1 = vnet_buffer (b[1])->ip.flow_hash = |
| 186 | vnet_buffer (b[1])->ip.flow_hash >> 1; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 187 | } |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 188 | else |
| 189 | { |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 190 | hc1 = vnet_buffer (b[1])->ip.flow_hash = |
| 191 | ip4_compute_flow_hash (ip1, lb1->lb_hash_config); |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 192 | } |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 193 | dpo1 = load_balance_get_fwd_bucket |
| 194 | (lb1, (hc1 & (lb1->lb_n_buckets_minus_1))); |
| 195 | } |
| 196 | else |
| 197 | { |
| 198 | dpo1 = load_balance_get_bucket_i (lb1, 0); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 199 | } |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 200 | |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 201 | next[0] = dpo0->dpoi_next_node; |
| 202 | next[1] = dpo1->dpoi_next_node; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 203 | |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 204 | vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = dpo0->dpoi_index; |
| 205 | vnet_buffer (b[1])->ip.adj_index[VLIB_TX] = dpo1->dpoi_index; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 206 | |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 207 | vlib_increment_combined_counter |
| 208 | (cm, thread_index, lbi0, 1, vlib_buffer_length_in_chain (vm, b[0])); |
| 209 | vlib_increment_combined_counter |
| 210 | (cm, thread_index, lbi1, 1, vlib_buffer_length_in_chain (vm, b[1])); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 211 | |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 212 | b += 2; |
| 213 | next += 2; |
| 214 | n_left -= 2; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 215 | } |
| 216 | |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 217 | while (n_left > 0) |
| 218 | { |
| 219 | const load_balance_t *lb0; |
| 220 | const ip4_header_t *ip0; |
| 221 | const dpo_id_t *dpo0; |
| 222 | u32 lbi0, hc0; |
| 223 | |
| 224 | ip0 = vlib_buffer_get_current (b[0]); |
| 225 | lbi0 = vnet_buffer (b[0])->ip.adj_index[VLIB_TX]; |
| 226 | |
| 227 | lb0 = load_balance_get (lbi0); |
| 228 | |
| 229 | hc0 = 0; |
| 230 | if (PREDICT_FALSE (lb0->lb_n_buckets > 1)) |
| 231 | { |
| 232 | if (PREDICT_TRUE (vnet_buffer (b[0])->ip.flow_hash)) |
| 233 | { |
| 234 | hc0 = vnet_buffer (b[0])->ip.flow_hash = |
| 235 | vnet_buffer (b[0])->ip.flow_hash >> 1; |
| 236 | } |
| 237 | else |
| 238 | { |
| 239 | hc0 = vnet_buffer (b[0])->ip.flow_hash = |
| 240 | ip4_compute_flow_hash (ip0, lb0->lb_hash_config); |
| 241 | } |
| 242 | dpo0 = load_balance_get_fwd_bucket |
| 243 | (lb0, (hc0 & (lb0->lb_n_buckets_minus_1))); |
| 244 | } |
| 245 | else |
| 246 | { |
| 247 | dpo0 = load_balance_get_bucket_i (lb0, 0); |
| 248 | } |
| 249 | |
| 250 | next[0] = dpo0->dpoi_next_node; |
| 251 | vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = dpo0->dpoi_index; |
| 252 | |
| 253 | vlib_increment_combined_counter |
| 254 | (cm, thread_index, lbi0, 1, vlib_buffer_length_in_chain (vm, b[0])); |
| 255 | |
| 256 | b += 1; |
| 257 | next += 1; |
| 258 | n_left -= 1; |
| 259 | } |
| 260 | |
| 261 | vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors); |
Neale Ranns | a71844f | 2018-11-08 07:31:36 -0800 | [diff] [blame] | 262 | if (node->flags & VLIB_NODE_FLAG_TRACE) |
| 263 | ip4_forward_next_trace (vm, node, frame, VLIB_TX); |
| 264 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 265 | return frame->n_vectors; |
| 266 | } |
| 267 | |
Neale Ranns | f868632 | 2017-11-29 02:39:53 -0800 | [diff] [blame] | 268 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 269 | VLIB_REGISTER_NODE (ip4_load_balance_node) = |
| 270 | { |
Neale Ranns | f868632 | 2017-11-29 02:39:53 -0800 | [diff] [blame] | 271 | .name = "ip4-load-balance", |
| 272 | .vector_size = sizeof (u32), |
| 273 | .sibling_of = "ip4-lookup", |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 274 | .format_trace = format_ip4_lookup_trace, |
Neale Ranns | f868632 | 2017-11-29 02:39:53 -0800 | [diff] [blame] | 275 | }; |
| 276 | /* *INDENT-ON* */ |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 277 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 278 | #ifndef CLIB_MARCH_VARIANT |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 279 | /* get first interface address */ |
| 280 | ip4_address_t * |
| 281 | ip4_interface_first_address (ip4_main_t * im, u32 sw_if_index, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 282 | ip_interface_address_t ** result_ia) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 283 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 284 | ip_lookup_main_t *lm = &im->lookup_main; |
| 285 | ip_interface_address_t *ia = 0; |
| 286 | ip4_address_t *result = 0; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 287 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 288 | /* *INDENT-OFF* */ |
| 289 | foreach_ip_interface_address |
| 290 | (lm, ia, sw_if_index, |
| 291 | 1 /* honor unnumbered */ , |
| 292 | ({ |
| 293 | ip4_address_t * a = |
| 294 | ip_interface_address_get_address (lm, ia); |
| 295 | result = a; |
| 296 | break; |
| 297 | })); |
| 298 | /* *INDENT-OFF* */ |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 299 | if (result_ia) |
| 300 | *result_ia = result ? ia : 0; |
| 301 | return result; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 302 | } |
Matthew G Smith | 88d29a9 | 2019-07-17 10:01:17 -0500 | [diff] [blame] | 303 | #endif |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 304 | |
| 305 | static void |
Neale Ranns | 1855b8e | 2018-07-11 10:31:26 -0700 | [diff] [blame] | 306 | ip4_add_subnet_bcast_route (u32 fib_index, |
| 307 | fib_prefix_t *pfx, |
| 308 | u32 sw_if_index) |
| 309 | { |
| 310 | vnet_sw_interface_flags_t iflags; |
| 311 | |
| 312 | iflags = vnet_sw_interface_get_flags(vnet_get_main(), sw_if_index); |
| 313 | |
| 314 | fib_table_entry_special_remove(fib_index, |
| 315 | pfx, |
| 316 | FIB_SOURCE_INTERFACE); |
| 317 | |
| 318 | if (iflags & VNET_SW_INTERFACE_FLAG_DIRECTED_BCAST) |
| 319 | { |
| 320 | fib_table_entry_update_one_path (fib_index, pfx, |
| 321 | FIB_SOURCE_INTERFACE, |
| 322 | FIB_ENTRY_FLAG_NONE, |
| 323 | DPO_PROTO_IP4, |
| 324 | /* No next-hop address */ |
| 325 | &ADJ_BCAST_ADDR, |
| 326 | sw_if_index, |
| 327 | // invalid FIB index |
| 328 | ~0, |
| 329 | 1, |
| 330 | // no out-label stack |
| 331 | NULL, |
| 332 | FIB_ROUTE_PATH_FLAG_NONE); |
| 333 | } |
| 334 | else |
| 335 | { |
| 336 | fib_table_entry_special_add(fib_index, |
| 337 | pfx, |
| 338 | FIB_SOURCE_INTERFACE, |
| 339 | (FIB_ENTRY_FLAG_DROP | |
| 340 | FIB_ENTRY_FLAG_LOOSE_URPF_EXEMPT)); |
| 341 | } |
| 342 | } |
| 343 | |
| 344 | static void |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 345 | ip4_add_interface_prefix_routes (ip4_main_t *im, |
| 346 | u32 sw_if_index, |
| 347 | u32 fib_index, |
| 348 | ip_interface_address_t * a) |
| 349 | { |
| 350 | ip_lookup_main_t *lm = &im->lookup_main; |
| 351 | ip_interface_prefix_t *if_prefix; |
| 352 | ip4_address_t *address = ip_interface_address_get_address (lm, a); |
| 353 | |
| 354 | ip_interface_prefix_key_t key = { |
| 355 | .prefix = { |
| 356 | .fp_len = a->address_length, |
| 357 | .fp_proto = FIB_PROTOCOL_IP4, |
| 358 | .fp_addr.ip4.as_u32 = address->as_u32 & im->fib_masks[a->address_length], |
| 359 | }, |
| 360 | .sw_if_index = sw_if_index, |
| 361 | }; |
| 362 | |
| 363 | fib_prefix_t pfx_special = { |
| 364 | .fp_proto = FIB_PROTOCOL_IP4, |
| 365 | }; |
| 366 | |
| 367 | /* If prefix already set on interface, just increment ref count & return */ |
| 368 | if_prefix = ip_get_interface_prefix (lm, &key); |
| 369 | if (if_prefix) |
| 370 | { |
| 371 | if_prefix->ref_count += 1; |
| 372 | return; |
| 373 | } |
| 374 | |
| 375 | /* New prefix - allocate a pool entry, initialize it, add to the hash */ |
| 376 | pool_get (lm->if_prefix_pool, if_prefix); |
| 377 | if_prefix->ref_count = 1; |
| 378 | if_prefix->src_ia_index = a - lm->if_address_pool; |
| 379 | clib_memcpy (&if_prefix->key, &key, sizeof (key)); |
| 380 | mhash_set (&lm->prefix_to_if_prefix_index, &key, |
| 381 | if_prefix - lm->if_prefix_pool, 0 /* old value */); |
| 382 | |
Neale Ranns | e2fe097 | 2020-11-26 08:37:27 +0000 | [diff] [blame^] | 383 | pfx_special.fp_len = a->address_length; |
| 384 | pfx_special.fp_addr.ip4.as_u32 = address->as_u32; |
| 385 | |
| 386 | /* set the glean route for the prefix */ |
| 387 | fib_table_entry_update_one_path (fib_index, &pfx_special, |
| 388 | FIB_SOURCE_INTERFACE, |
| 389 | (FIB_ENTRY_FLAG_CONNECTED | |
| 390 | FIB_ENTRY_FLAG_ATTACHED), |
| 391 | DPO_PROTO_IP4, |
| 392 | /* No next-hop address */ |
| 393 | NULL, |
| 394 | sw_if_index, |
| 395 | /* invalid FIB index */ |
| 396 | ~0, |
| 397 | 1, |
| 398 | /* no out-label stack */ |
| 399 | NULL, |
| 400 | FIB_ROUTE_PATH_FLAG_NONE); |
| 401 | |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 402 | /* length <= 30 - add glean, drop first address, maybe drop bcast address */ |
| 403 | if (a->address_length <= 30) |
| 404 | { |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 405 | /* set a drop route for the base address of the prefix */ |
| 406 | pfx_special.fp_len = 32; |
| 407 | pfx_special.fp_addr.ip4.as_u32 = |
| 408 | address->as_u32 & im->fib_masks[a->address_length]; |
| 409 | |
| 410 | if (pfx_special.fp_addr.ip4.as_u32 != address->as_u32) |
| 411 | fib_table_entry_special_add (fib_index, &pfx_special, |
| 412 | FIB_SOURCE_INTERFACE, |
| 413 | (FIB_ENTRY_FLAG_DROP | |
| 414 | FIB_ENTRY_FLAG_LOOSE_URPF_EXEMPT)); |
| 415 | |
| 416 | /* set a route for the broadcast address of the prefix */ |
| 417 | pfx_special.fp_len = 32; |
| 418 | pfx_special.fp_addr.ip4.as_u32 = |
| 419 | address->as_u32 | ~im->fib_masks[a->address_length]; |
| 420 | if (pfx_special.fp_addr.ip4.as_u32 != address->as_u32) |
| 421 | ip4_add_subnet_bcast_route (fib_index, &pfx_special, sw_if_index); |
| 422 | |
| 423 | |
| 424 | } |
| 425 | /* length == 31 - add an attached route for the other address */ |
| 426 | else if (a->address_length == 31) |
| 427 | { |
| 428 | pfx_special.fp_len = 32; |
| 429 | pfx_special.fp_addr.ip4.as_u32 = |
| 430 | address->as_u32 ^ clib_host_to_net_u32(1); |
| 431 | |
| 432 | fib_table_entry_update_one_path (fib_index, &pfx_special, |
| 433 | FIB_SOURCE_INTERFACE, |
| 434 | (FIB_ENTRY_FLAG_ATTACHED), |
| 435 | DPO_PROTO_IP4, |
| 436 | &pfx_special.fp_addr, |
| 437 | sw_if_index, |
| 438 | /* invalid FIB index */ |
| 439 | ~0, |
| 440 | 1, |
| 441 | NULL, |
| 442 | FIB_ROUTE_PATH_FLAG_NONE); |
| 443 | } |
| 444 | } |
| 445 | |
| 446 | static void |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 447 | ip4_add_interface_routes (u32 sw_if_index, |
| 448 | ip4_main_t * im, u32 fib_index, |
| 449 | ip_interface_address_t * a) |
| 450 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 451 | ip_lookup_main_t *lm = &im->lookup_main; |
| 452 | ip4_address_t *address = ip_interface_address_get_address (lm, a); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 453 | fib_prefix_t pfx = { |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 454 | .fp_len = 32, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 455 | .fp_proto = FIB_PROTOCOL_IP4, |
| 456 | .fp_addr.ip4 = *address, |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 457 | }; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 458 | |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 459 | /* set special routes for the prefix if needed */ |
| 460 | ip4_add_interface_prefix_routes (im, sw_if_index, fib_index, a); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 461 | |
| 462 | 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] | 463 | { |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 464 | u32 classify_table_index = |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 465 | lm->classify_table_index_by_sw_if_index[sw_if_index]; |
| 466 | if (classify_table_index != (u32) ~ 0) |
| 467 | { |
| 468 | dpo_id_t dpo = DPO_INVALID; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 469 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 470 | dpo_set (&dpo, |
| 471 | DPO_CLASSIFY, |
| 472 | DPO_PROTO_IP4, |
| 473 | classify_dpo_create (DPO_PROTO_IP4, classify_table_index)); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 474 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 475 | fib_table_entry_special_dpo_add (fib_index, |
| 476 | &pfx, |
| 477 | FIB_SOURCE_CLASSIFY, |
| 478 | FIB_ENTRY_FLAG_NONE, &dpo); |
| 479 | dpo_reset (&dpo); |
| 480 | } |
| 481 | } |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 482 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 483 | fib_table_entry_update_one_path (fib_index, &pfx, |
| 484 | FIB_SOURCE_INTERFACE, |
| 485 | (FIB_ENTRY_FLAG_CONNECTED | |
| 486 | FIB_ENTRY_FLAG_LOCAL), |
Neale Ranns | da78f95 | 2017-05-24 09:15:43 -0700 | [diff] [blame] | 487 | DPO_PROTO_IP4, |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 488 | &pfx.fp_addr, |
| 489 | sw_if_index, |
| 490 | // invalid FIB index |
| 491 | ~0, |
| 492 | 1, NULL, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 493 | FIB_ROUTE_PATH_FLAG_NONE); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 494 | } |
| 495 | |
| 496 | static void |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 497 | ip4_del_interface_prefix_routes (ip4_main_t * im, |
| 498 | u32 sw_if_index, |
| 499 | u32 fib_index, |
| 500 | ip4_address_t * address, |
| 501 | u32 address_length) |
| 502 | { |
| 503 | ip_lookup_main_t *lm = &im->lookup_main; |
| 504 | ip_interface_prefix_t *if_prefix; |
| 505 | |
| 506 | ip_interface_prefix_key_t key = { |
| 507 | .prefix = { |
| 508 | .fp_len = address_length, |
| 509 | .fp_proto = FIB_PROTOCOL_IP4, |
| 510 | .fp_addr.ip4.as_u32 = address->as_u32 & im->fib_masks[address_length], |
| 511 | }, |
| 512 | .sw_if_index = sw_if_index, |
| 513 | }; |
| 514 | |
| 515 | fib_prefix_t pfx_special = { |
| 516 | .fp_len = 32, |
| 517 | .fp_proto = FIB_PROTOCOL_IP4, |
| 518 | }; |
| 519 | |
| 520 | if_prefix = ip_get_interface_prefix (lm, &key); |
| 521 | if (!if_prefix) |
| 522 | { |
| 523 | clib_warning ("Prefix not found while deleting %U", |
| 524 | format_ip4_address_and_length, address, address_length); |
| 525 | return; |
| 526 | } |
| 527 | |
| 528 | if_prefix->ref_count -= 1; |
| 529 | |
| 530 | /* |
Neale Ranns | e2fe097 | 2020-11-26 08:37:27 +0000 | [diff] [blame^] | 531 | * Routes need to be adjusted if deleting last intf addr in prefix |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 532 | * |
| 533 | * We're done now otherwise |
| 534 | */ |
Neale Ranns | e2fe097 | 2020-11-26 08:37:27 +0000 | [diff] [blame^] | 535 | if (if_prefix->ref_count > 0) |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 536 | return; |
| 537 | |
| 538 | /* length <= 30, delete glean route, first address, last address */ |
| 539 | if (address_length <= 30) |
| 540 | { |
Neale Ranns | e2fe097 | 2020-11-26 08:37:27 +0000 | [diff] [blame^] | 541 | /* Less work to do in FIB if we remove the covered /32s first */ |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 542 | |
Neale Ranns | e2fe097 | 2020-11-26 08:37:27 +0000 | [diff] [blame^] | 543 | /* first address in prefix */ |
| 544 | pfx_special.fp_addr.ip4.as_u32 = |
| 545 | address->as_u32 & im->fib_masks[address_length]; |
| 546 | pfx_special.fp_len = 32; |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 547 | |
Neale Ranns | e2fe097 | 2020-11-26 08:37:27 +0000 | [diff] [blame^] | 548 | if (pfx_special.fp_addr.ip4.as_u32 != address->as_u32) |
| 549 | fib_table_entry_special_remove (fib_index, |
| 550 | &pfx_special, |
| 551 | FIB_SOURCE_INTERFACE); |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 552 | |
Neale Ranns | e2fe097 | 2020-11-26 08:37:27 +0000 | [diff] [blame^] | 553 | /* prefix broadcast address */ |
| 554 | pfx_special.fp_addr.ip4.as_u32 = |
| 555 | address->as_u32 | ~im->fib_masks[address_length]; |
| 556 | pfx_special.fp_len = 32; |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 557 | |
Neale Ranns | e2fe097 | 2020-11-26 08:37:27 +0000 | [diff] [blame^] | 558 | if (pfx_special.fp_addr.ip4.as_u32 != address->as_u32) |
| 559 | fib_table_entry_special_remove (fib_index, |
| 560 | &pfx_special, |
| 561 | FIB_SOURCE_INTERFACE); |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 562 | } |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 563 | else if (address_length == 31) |
| 564 | { |
Neale Ranns | e2fe097 | 2020-11-26 08:37:27 +0000 | [diff] [blame^] | 565 | /* length == 31, delete attached route for the other address */ |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 566 | pfx_special.fp_addr.ip4.as_u32 = |
| 567 | address->as_u32 ^ clib_host_to_net_u32(1); |
| 568 | |
| 569 | fib_table_entry_delete (fib_index, &pfx_special, FIB_SOURCE_INTERFACE); |
| 570 | } |
| 571 | |
Neale Ranns | e2fe097 | 2020-11-26 08:37:27 +0000 | [diff] [blame^] | 572 | /* remove glean route for prefix */ |
| 573 | pfx_special.fp_addr.ip4 = *address; |
| 574 | pfx_special.fp_len = address_length; |
| 575 | fib_table_entry_delete (fib_index, &pfx_special, FIB_SOURCE_INTERFACE); |
| 576 | |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 577 | mhash_unset (&lm->prefix_to_if_prefix_index, &key, 0 /* old_value */); |
| 578 | pool_put (lm->if_prefix_pool, if_prefix); |
| 579 | } |
| 580 | |
| 581 | static void |
| 582 | ip4_del_interface_routes (u32 sw_if_index, |
| 583 | ip4_main_t * im, |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 584 | u32 fib_index, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 585 | ip4_address_t * address, u32 address_length) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 586 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 587 | fib_prefix_t pfx = { |
Neale Ranns | e2fe097 | 2020-11-26 08:37:27 +0000 | [diff] [blame^] | 588 | .fp_len = 32, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 589 | .fp_proto = FIB_PROTOCOL_IP4, |
| 590 | .fp_addr.ip4 = *address, |
| 591 | }; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 592 | |
Neale Ranns | e2fe097 | 2020-11-26 08:37:27 +0000 | [diff] [blame^] | 593 | fib_table_entry_delete (fib_index, &pfx, FIB_SOURCE_INTERFACE); |
| 594 | |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 595 | ip4_del_interface_prefix_routes (im, sw_if_index, fib_index, |
| 596 | address, address_length); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 597 | } |
| 598 | |
Matthew G Smith | 88d29a9 | 2019-07-17 10:01:17 -0500 | [diff] [blame] | 599 | #ifndef CLIB_MARCH_VARIANT |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 600 | void |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 601 | ip4_sw_interface_enable_disable (u32 sw_if_index, u32 is_enable) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 602 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 603 | ip4_main_t *im = &ip4_main; |
John Lo | 4a302ee | 2020-05-12 22:34:39 -0400 | [diff] [blame] | 604 | vnet_main_t *vnm = vnet_get_main (); |
| 605 | vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 606 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 607 | vec_validate_init_empty (im->ip_enabled_by_sw_if_index, sw_if_index, 0); |
| 608 | |
| 609 | /* |
| 610 | * enable/disable only on the 1<->0 transition |
| 611 | */ |
| 612 | if (is_enable) |
| 613 | { |
| 614 | if (1 != ++im->ip_enabled_by_sw_if_index[sw_if_index]) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 615 | return; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 616 | } |
| 617 | else |
| 618 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 619 | ASSERT (im->ip_enabled_by_sw_if_index[sw_if_index] > 0); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 620 | if (0 != --im->ip_enabled_by_sw_if_index[sw_if_index]) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 621 | return; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 622 | } |
Neale Ranns | 8269d3d | 2018-01-30 09:02:20 -0800 | [diff] [blame] | 623 | vnet_feature_enable_disable ("ip4-unicast", "ip4-not-enabled", sw_if_index, |
Damjan Marion | 4d48993 | 2016-12-09 03:21:27 -0800 | [diff] [blame] | 624 | !is_enable, 0, 0); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 625 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 626 | |
Neale Ranns | 8269d3d | 2018-01-30 09:02:20 -0800 | [diff] [blame] | 627 | vnet_feature_enable_disable ("ip4-multicast", "ip4-not-enabled", |
Neale Ranns | 180279b | 2017-03-16 15:49:09 -0400 | [diff] [blame] | 628 | sw_if_index, !is_enable, 0, 0); |
Neale Ranns | 57e53bb | 2019-05-29 13:58:43 +0000 | [diff] [blame] | 629 | |
John Lo | 4a302ee | 2020-05-12 22:34:39 -0400 | [diff] [blame] | 630 | if (is_enable) |
| 631 | hi->l3_if_count++; |
| 632 | else if (hi->l3_if_count) |
| 633 | hi->l3_if_count--; |
| 634 | |
Neale Ranns | 57e53bb | 2019-05-29 13:58:43 +0000 | [diff] [blame] | 635 | { |
| 636 | ip4_enable_disable_interface_callback_t *cb; |
| 637 | vec_foreach (cb, im->enable_disable_interface_callbacks) |
| 638 | cb->function (im, cb->function_opaque, sw_if_index, is_enable); |
| 639 | } |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 640 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 641 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 642 | static clib_error_t * |
| 643 | ip4_add_del_interface_address_internal (vlib_main_t * vm, |
| 644 | u32 sw_if_index, |
| 645 | ip4_address_t * address, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 646 | u32 address_length, u32 is_del) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 647 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 648 | vnet_main_t *vnm = vnet_get_main (); |
| 649 | ip4_main_t *im = &ip4_main; |
| 650 | ip_lookup_main_t *lm = &im->lookup_main; |
| 651 | clib_error_t *error = 0; |
Neale Ranns | 59f7113 | 2020-04-08 12:19:38 +0000 | [diff] [blame] | 652 | u32 if_address_index; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 653 | ip4_address_fib_t ip4_af, *addr_fib = 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 654 | |
Pavel Kotucek | 5780898 | 2017-08-02 08:20:19 +0200 | [diff] [blame] | 655 | /* local0 interface doesn't support IP addressing */ |
| 656 | if (sw_if_index == 0) |
| 657 | { |
| 658 | return |
| 659 | clib_error_create ("local0 interface doesn't support IP addressing"); |
| 660 | } |
| 661 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 662 | vec_validate (im->fib_index_by_sw_if_index, sw_if_index); |
| 663 | ip4_addr_fib_init (&ip4_af, address, |
| 664 | vec_elt (im->fib_index_by_sw_if_index, sw_if_index)); |
| 665 | vec_add1 (addr_fib, ip4_af); |
| 666 | |
Neale Ranns | 744902e | 2017-08-14 10:35:44 -0700 | [diff] [blame] | 667 | /* |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 668 | * there is no support for adj-fib handling in the presence of overlapping |
| 669 | * subnets on interfaces. Easy fix - disallow overlapping subnets, like |
| 670 | * most routers do. |
| 671 | */ |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 672 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 673 | if (!is_del) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 674 | { |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 675 | /* When adding an address check that it does not conflict |
Neale Ranns | 744902e | 2017-08-14 10:35:44 -0700 | [diff] [blame] | 676 | with an existing address on any interface in this table. */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 677 | ip_interface_address_t *ia; |
Neale Ranns | 744902e | 2017-08-14 10:35:44 -0700 | [diff] [blame] | 678 | vnet_sw_interface_t *sif; |
| 679 | |
| 680 | pool_foreach(sif, vnm->interface_main.sw_interfaces, |
| 681 | ({ |
| 682 | if (im->fib_index_by_sw_if_index[sw_if_index] == |
| 683 | im->fib_index_by_sw_if_index[sif->sw_if_index]) |
| 684 | { |
| 685 | foreach_ip_interface_address |
| 686 | (&im->lookup_main, ia, sif->sw_if_index, |
| 687 | 0 /* honor unnumbered */ , |
| 688 | ({ |
| 689 | ip4_address_t * x = |
| 690 | ip_interface_address_get_address |
| 691 | (&im->lookup_main, ia); |
Neale Ranns | 59f7113 | 2020-04-08 12:19:38 +0000 | [diff] [blame] | 692 | |
Neale Ranns | 744902e | 2017-08-14 10:35:44 -0700 | [diff] [blame] | 693 | if (ip4_destination_matches_route |
| 694 | (im, address, x, ia->address_length) || |
| 695 | ip4_destination_matches_route (im, |
| 696 | x, |
| 697 | address, |
| 698 | address_length)) |
| 699 | { |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 700 | /* an intf may have >1 addr from the same prefix */ |
| 701 | if ((sw_if_index == sif->sw_if_index) && |
| 702 | (ia->address_length == address_length) && |
| 703 | (x->as_u32 != address->as_u32)) |
| 704 | continue; |
| 705 | |
Neale Ranns | 59f7113 | 2020-04-08 12:19:38 +0000 | [diff] [blame] | 706 | if (ia->flags & IP_INTERFACE_ADDRESS_FLAG_STALE) |
| 707 | /* if the address we're comparing against is stale |
| 708 | * then the CP has not added this one back yet, maybe |
| 709 | * it never will, so we have to assume it won't and |
| 710 | * ignore it. if it does add it back, then it will fail |
| 711 | * because this one is now present */ |
| 712 | continue; |
Neale Ranns | 744902e | 2017-08-14 10:35:44 -0700 | [diff] [blame] | 713 | |
Neale Ranns | 59f7113 | 2020-04-08 12:19:38 +0000 | [diff] [blame] | 714 | /* error if the length or intf was different */ |
| 715 | vnm->api_errno = VNET_API_ERROR_ADDRESS_IN_USE; |
| 716 | |
| 717 | error = clib_error_create |
Ole Troan | 33a5817 | 2019-09-04 09:12:29 +0200 | [diff] [blame] | 718 | ("failed to add %U on %U which conflicts with %U for interface %U", |
Neale Ranns | 744902e | 2017-08-14 10:35:44 -0700 | [diff] [blame] | 719 | format_ip4_address_and_length, address, |
| 720 | address_length, |
Ole Troan | 33a5817 | 2019-09-04 09:12:29 +0200 | [diff] [blame] | 721 | format_vnet_sw_if_index_name, vnm, |
| 722 | sw_if_index, |
Neale Ranns | 744902e | 2017-08-14 10:35:44 -0700 | [diff] [blame] | 723 | format_ip4_address_and_length, x, |
| 724 | ia->address_length, |
| 725 | format_vnet_sw_if_index_name, vnm, |
| 726 | sif->sw_if_index); |
Neale Ranns | 59f7113 | 2020-04-08 12:19:38 +0000 | [diff] [blame] | 727 | goto done; |
Neale Ranns | 744902e | 2017-08-14 10:35:44 -0700 | [diff] [blame] | 728 | } |
| 729 | })); |
| 730 | } |
| 731 | })); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 732 | } |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 733 | /* *INDENT-ON* */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 734 | |
Neale Ranns | 59f7113 | 2020-04-08 12:19:38 +0000 | [diff] [blame] | 735 | if_address_index = ip_interface_address_find (lm, addr_fib, address_length); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 736 | |
Neale Ranns | 59f7113 | 2020-04-08 12:19:38 +0000 | [diff] [blame] | 737 | if (is_del) |
| 738 | { |
| 739 | if (~0 == if_address_index) |
| 740 | { |
| 741 | vnm->api_errno = VNET_API_ERROR_ADDRESS_NOT_FOUND_FOR_INTERFACE; |
| 742 | error = clib_error_create ("%U not found for interface %U", |
| 743 | lm->format_address_and_length, |
| 744 | addr_fib, address_length, |
| 745 | format_vnet_sw_if_index_name, vnm, |
| 746 | sw_if_index); |
| 747 | goto done; |
| 748 | } |
| 749 | |
yedg | dbd366b | 2020-05-14 10:51:53 +0800 | [diff] [blame] | 750 | error = ip_interface_address_del (lm, vnm, if_address_index, addr_fib, |
| 751 | address_length, sw_if_index); |
| 752 | if (error) |
| 753 | goto done; |
Neale Ranns | 59f7113 | 2020-04-08 12:19:38 +0000 | [diff] [blame] | 754 | } |
| 755 | else |
| 756 | { |
| 757 | if (~0 != if_address_index) |
| 758 | { |
| 759 | ip_interface_address_t *ia; |
| 760 | |
| 761 | ia = pool_elt_at_index (lm->if_address_pool, if_address_index); |
| 762 | |
| 763 | if (ia->flags & IP_INTERFACE_ADDRESS_FLAG_STALE) |
| 764 | { |
| 765 | if (ia->sw_if_index == sw_if_index) |
| 766 | { |
| 767 | /* re-adding an address during the replace action. |
| 768 | * consdier this the update. clear the flag and |
| 769 | * we're done */ |
| 770 | ia->flags &= ~IP_INTERFACE_ADDRESS_FLAG_STALE; |
| 771 | goto done; |
| 772 | } |
| 773 | else |
| 774 | { |
| 775 | /* The prefix is moving from one interface to another. |
| 776 | * delete the stale and add the new */ |
| 777 | ip4_add_del_interface_address_internal (vm, |
| 778 | ia->sw_if_index, |
| 779 | address, |
| 780 | address_length, 1); |
| 781 | ia = NULL; |
| 782 | error = ip_interface_address_add (lm, sw_if_index, |
| 783 | addr_fib, address_length, |
| 784 | &if_address_index); |
| 785 | } |
| 786 | } |
| 787 | else |
| 788 | { |
| 789 | vnm->api_errno = VNET_API_ERROR_DUPLICATE_IF_ADDRESS; |
| 790 | error = clib_error_create |
| 791 | ("Prefix %U already found on interface %U", |
| 792 | lm->format_address_and_length, addr_fib, address_length, |
| 793 | format_vnet_sw_if_index_name, vnm, ia->sw_if_index); |
| 794 | } |
| 795 | } |
| 796 | else |
| 797 | error = ip_interface_address_add (lm, sw_if_index, |
| 798 | addr_fib, address_length, |
| 799 | &if_address_index); |
| 800 | } |
| 801 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 802 | if (error) |
| 803 | goto done; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 804 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 805 | ip4_sw_interface_enable_disable (sw_if_index, !is_del); |
Neale Ranns | 03c254e | 2020-03-17 14:25:10 +0000 | [diff] [blame] | 806 | ip4_mfib_interface_enable_disable (sw_if_index, !is_del); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 807 | |
Matthew G Smith | 88d29a9 | 2019-07-17 10:01:17 -0500 | [diff] [blame] | 808 | /* intf addr routes are added/deleted on admin up/down */ |
| 809 | if (vnet_sw_interface_is_admin_up (vnm, sw_if_index)) |
| 810 | { |
| 811 | if (is_del) |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 812 | ip4_del_interface_routes (sw_if_index, |
| 813 | im, ip4_af.fib_index, address, |
Matthew G Smith | 88d29a9 | 2019-07-17 10:01:17 -0500 | [diff] [blame] | 814 | address_length); |
| 815 | else |
| 816 | ip4_add_interface_routes (sw_if_index, |
| 817 | im, ip4_af.fib_index, |
| 818 | pool_elt_at_index |
| 819 | (lm->if_address_pool, if_address_index)); |
| 820 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 821 | |
Neale Ranns | 59f7113 | 2020-04-08 12:19:38 +0000 | [diff] [blame] | 822 | ip4_add_del_interface_address_callback_t *cb; |
| 823 | vec_foreach (cb, im->add_del_interface_address_callbacks) |
| 824 | cb->function (im, cb->function_opaque, sw_if_index, |
| 825 | address, address_length, if_address_index, is_del); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 826 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 827 | done: |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 828 | vec_free (addr_fib); |
| 829 | return error; |
| 830 | } |
| 831 | |
| 832 | clib_error_t * |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 833 | ip4_add_del_interface_address (vlib_main_t * vm, |
| 834 | u32 sw_if_index, |
| 835 | ip4_address_t * address, |
| 836 | u32 address_length, u32 is_del) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 837 | { |
| 838 | return ip4_add_del_interface_address_internal |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 839 | (vm, sw_if_index, address, address_length, is_del); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 840 | } |
| 841 | |
Neale Ranns | 1855b8e | 2018-07-11 10:31:26 -0700 | [diff] [blame] | 842 | void |
| 843 | ip4_directed_broadcast (u32 sw_if_index, u8 enable) |
| 844 | { |
| 845 | ip_interface_address_t *ia; |
| 846 | ip4_main_t *im; |
| 847 | |
| 848 | im = &ip4_main; |
| 849 | |
| 850 | /* |
| 851 | * when directed broadcast is enabled, the subnet braodcast route will forward |
| 852 | * packets using an adjacency with a broadcast MAC. otherwise it drops |
| 853 | */ |
| 854 | /* *INDENT-OFF* */ |
| 855 | foreach_ip_interface_address(&im->lookup_main, ia, |
| 856 | sw_if_index, 0, |
| 857 | ({ |
| 858 | if (ia->address_length <= 30) |
| 859 | { |
| 860 | ip4_address_t *ipa; |
| 861 | |
| 862 | ipa = ip_interface_address_get_address (&im->lookup_main, ia); |
| 863 | |
| 864 | fib_prefix_t pfx = { |
| 865 | .fp_len = 32, |
| 866 | .fp_proto = FIB_PROTOCOL_IP4, |
| 867 | .fp_addr = { |
| 868 | .ip4.as_u32 = (ipa->as_u32 | ~im->fib_masks[ia->address_length]), |
| 869 | }, |
| 870 | }; |
| 871 | |
| 872 | ip4_add_subnet_bcast_route |
| 873 | (fib_table_get_index_for_sw_if_index(FIB_PROTOCOL_IP4, |
| 874 | sw_if_index), |
| 875 | &pfx, sw_if_index); |
| 876 | } |
| 877 | })); |
| 878 | /* *INDENT-ON* */ |
| 879 | } |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 880 | #endif |
Neale Ranns | 1855b8e | 2018-07-11 10:31:26 -0700 | [diff] [blame] | 881 | |
Matthew G Smith | 88d29a9 | 2019-07-17 10:01:17 -0500 | [diff] [blame] | 882 | static clib_error_t * |
| 883 | ip4_sw_interface_admin_up_down (vnet_main_t * vnm, u32 sw_if_index, u32 flags) |
| 884 | { |
| 885 | ip4_main_t *im = &ip4_main; |
| 886 | ip_interface_address_t *ia; |
| 887 | ip4_address_t *a; |
| 888 | u32 is_admin_up, fib_index; |
| 889 | |
| 890 | /* Fill in lookup tables with default table (0). */ |
| 891 | vec_validate (im->fib_index_by_sw_if_index, sw_if_index); |
| 892 | |
| 893 | vec_validate_init_empty (im-> |
| 894 | lookup_main.if_address_pool_index_by_sw_if_index, |
| 895 | sw_if_index, ~0); |
| 896 | |
| 897 | is_admin_up = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) != 0; |
| 898 | |
| 899 | fib_index = vec_elt (im->fib_index_by_sw_if_index, sw_if_index); |
| 900 | |
| 901 | /* *INDENT-OFF* */ |
| 902 | foreach_ip_interface_address (&im->lookup_main, ia, sw_if_index, |
| 903 | 0 /* honor unnumbered */, |
| 904 | ({ |
| 905 | a = ip_interface_address_get_address (&im->lookup_main, ia); |
| 906 | if (is_admin_up) |
| 907 | ip4_add_interface_routes (sw_if_index, |
| 908 | im, fib_index, |
| 909 | ia); |
| 910 | else |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 911 | ip4_del_interface_routes (sw_if_index, |
| 912 | im, fib_index, |
Matthew G Smith | 88d29a9 | 2019-07-17 10:01:17 -0500 | [diff] [blame] | 913 | a, ia->address_length); |
| 914 | })); |
| 915 | /* *INDENT-ON* */ |
| 916 | |
| 917 | return 0; |
| 918 | } |
| 919 | |
| 920 | VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION (ip4_sw_interface_admin_up_down); |
| 921 | |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 922 | /* Built-in ip4 unicast rx feature path definition */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 923 | /* *INDENT-OFF* */ |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 924 | VNET_FEATURE_ARC_INIT (ip4_unicast, static) = |
| 925 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 926 | .arc_name = "ip4-unicast", |
Damjan Marion | 892e076 | 2016-12-09 18:52:05 +0100 | [diff] [blame] | 927 | .start_nodes = VNET_FEATURES ("ip4-input", "ip4-input-no-checksum"), |
Dave Barach | a25def7 | 2018-11-26 11:04:45 -0500 | [diff] [blame] | 928 | .last_in_arc = "ip4-lookup", |
Damjan Marion | 892e076 | 2016-12-09 18:52:05 +0100 | [diff] [blame] | 929 | .arc_index_ptr = &ip4_main.lookup_main.ucast_feature_arc_index, |
| 930 | }; |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 931 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 932 | VNET_FEATURE_INIT (ip4_flow_classify, static) = |
| 933 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 934 | .arc_name = "ip4-unicast", |
Juraj Sloboda | 506b245 | 2016-08-07 23:45:24 -0700 | [diff] [blame] | 935 | .node_name = "ip4-flow-classify", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 936 | .runs_before = VNET_FEATURES ("ip4-inacl"), |
Juraj Sloboda | 506b245 | 2016-08-07 23:45:24 -0700 | [diff] [blame] | 937 | }; |
| 938 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 939 | VNET_FEATURE_INIT (ip4_inacl, static) = |
| 940 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 941 | .arc_name = "ip4-unicast", |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 942 | .node_name = "ip4-inacl", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 943 | .runs_before = VNET_FEATURES ("ip4-policer-classify"), |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 944 | }; |
| 945 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 946 | VNET_FEATURE_INIT (ip4_source_and_port_range_check_rx, static) = |
| 947 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 948 | .arc_name = "ip4-unicast", |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 949 | .node_name = "ip4-source-and-port-range-check-rx", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 950 | .runs_before = VNET_FEATURES ("ip4-policer-classify"), |
Dave Barach | 6f9bca2 | 2016-04-30 10:25:32 -0400 | [diff] [blame] | 951 | }; |
| 952 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 953 | VNET_FEATURE_INIT (ip4_policer_classify, static) = |
| 954 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 955 | .arc_name = "ip4-unicast", |
Matus Fabian | 70e6a8d | 2016-06-20 08:10:42 -0700 | [diff] [blame] | 956 | .node_name = "ip4-policer-classify", |
Pierre Pfister | 057b356 | 2018-12-10 17:01:01 +0100 | [diff] [blame] | 957 | .runs_before = VNET_FEATURES ("ipsec4-input-feature"), |
Matus Fabian | 70e6a8d | 2016-06-20 08:10:42 -0700 | [diff] [blame] | 958 | }; |
| 959 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 960 | VNET_FEATURE_INIT (ip4_ipsec, static) = |
| 961 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 962 | .arc_name = "ip4-unicast", |
Pierre Pfister | 057b356 | 2018-12-10 17:01:01 +0100 | [diff] [blame] | 963 | .node_name = "ipsec4-input-feature", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 964 | .runs_before = VNET_FEATURES ("vpath-input-ip4"), |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 965 | }; |
| 966 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 967 | VNET_FEATURE_INIT (ip4_vpath, static) = |
| 968 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 969 | .arc_name = "ip4-unicast", |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 970 | .node_name = "vpath-input-ip4", |
John Lo | 37682e1 | 2016-11-30 12:51:39 -0500 | [diff] [blame] | 971 | .runs_before = VNET_FEATURES ("ip4-vxlan-bypass"), |
| 972 | }; |
| 973 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 974 | VNET_FEATURE_INIT (ip4_vxlan_bypass, static) = |
| 975 | { |
John Lo | 37682e1 | 2016-11-30 12:51:39 -0500 | [diff] [blame] | 976 | .arc_name = "ip4-unicast", |
| 977 | .node_name = "ip4-vxlan-bypass", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 978 | .runs_before = VNET_FEATURES ("ip4-lookup"), |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 979 | }; |
| 980 | |
Neale Ranns | 8269d3d | 2018-01-30 09:02:20 -0800 | [diff] [blame] | 981 | VNET_FEATURE_INIT (ip4_not_enabled, static) = |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 982 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 983 | .arc_name = "ip4-unicast", |
Neale Ranns | 8269d3d | 2018-01-30 09:02:20 -0800 | [diff] [blame] | 984 | .node_name = "ip4-not-enabled", |
Neale Ranns | 180279b | 2017-03-16 15:49:09 -0400 | [diff] [blame] | 985 | .runs_before = VNET_FEATURES ("ip4-lookup"), |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 986 | }; |
| 987 | |
Neale Ranns | 180279b | 2017-03-16 15:49:09 -0400 | [diff] [blame] | 988 | VNET_FEATURE_INIT (ip4_lookup, static) = |
| 989 | { |
| 990 | .arc_name = "ip4-unicast", |
| 991 | .node_name = "ip4-lookup", |
| 992 | .runs_before = 0, /* not before any other features */ |
| 993 | }; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 994 | |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 995 | /* Built-in ip4 multicast rx feature path definition */ |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 996 | VNET_FEATURE_ARC_INIT (ip4_multicast, static) = |
| 997 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 998 | .arc_name = "ip4-multicast", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 999 | .start_nodes = VNET_FEATURES ("ip4-input", "ip4-input-no-checksum"), |
Dave Barach | a25def7 | 2018-11-26 11:04:45 -0500 | [diff] [blame] | 1000 | .last_in_arc = "ip4-mfib-forward-lookup", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1001 | .arc_index_ptr = &ip4_main.lookup_main.mcast_feature_arc_index, |
| 1002 | }; |
| 1003 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1004 | VNET_FEATURE_INIT (ip4_vpath_mc, static) = |
| 1005 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1006 | .arc_name = "ip4-multicast", |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 1007 | .node_name = "vpath-input-ip4", |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 1008 | .runs_before = VNET_FEATURES ("ip4-mfib-forward-lookup"), |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 1009 | }; |
| 1010 | |
Neale Ranns | 8269d3d | 2018-01-30 09:02:20 -0800 | [diff] [blame] | 1011 | VNET_FEATURE_INIT (ip4_mc_not_enabled, static) = |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1012 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1013 | .arc_name = "ip4-multicast", |
Neale Ranns | 8269d3d | 2018-01-30 09:02:20 -0800 | [diff] [blame] | 1014 | .node_name = "ip4-not-enabled", |
Neale Ranns | 180279b | 2017-03-16 15:49:09 -0400 | [diff] [blame] | 1015 | .runs_before = VNET_FEATURES ("ip4-mfib-forward-lookup"), |
| 1016 | }; |
| 1017 | |
| 1018 | VNET_FEATURE_INIT (ip4_lookup_mc, static) = |
| 1019 | { |
| 1020 | .arc_name = "ip4-multicast", |
| 1021 | .node_name = "ip4-mfib-forward-lookup", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1022 | .runs_before = 0, /* last feature */ |
Neale Ranns | 5e575b1 | 2016-10-03 09:40:25 +0100 | [diff] [blame] | 1023 | }; |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 1024 | |
| 1025 | /* Source and port-range check ip4 tx feature path definition */ |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1026 | VNET_FEATURE_ARC_INIT (ip4_output, static) = |
| 1027 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1028 | .arc_name = "ip4-output", |
Neale Ranns | f068c3e | 2018-01-03 04:18:48 -0800 | [diff] [blame] | 1029 | .start_nodes = VNET_FEATURES ("ip4-rewrite", "ip4-midchain", "ip4-dvr-dpo"), |
Dave Barach | a25def7 | 2018-11-26 11:04:45 -0500 | [diff] [blame] | 1030 | .last_in_arc = "interface-output", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1031 | .arc_index_ptr = &ip4_main.lookup_main.output_feature_arc_index, |
| 1032 | }; |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 1033 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1034 | VNET_FEATURE_INIT (ip4_source_and_port_range_check_tx, static) = |
| 1035 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1036 | .arc_name = "ip4-output", |
| 1037 | .node_name = "ip4-source-and-port-range-check-tx", |
Andrew Yourtchenko | 815d7d5 | 2018-02-07 11:37:02 +0100 | [diff] [blame] | 1038 | .runs_before = VNET_FEATURES ("ip4-outacl"), |
| 1039 | }; |
| 1040 | |
| 1041 | VNET_FEATURE_INIT (ip4_outacl, static) = |
| 1042 | { |
| 1043 | .arc_name = "ip4-output", |
| 1044 | .node_name = "ip4-outacl", |
Pierre Pfister | 057b356 | 2018-12-10 17:01:01 +0100 | [diff] [blame] | 1045 | .runs_before = VNET_FEATURES ("ipsec4-output-feature"), |
Matus Fabian | 08a6f01 | 2016-11-15 06:08:51 -0800 | [diff] [blame] | 1046 | }; |
| 1047 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1048 | VNET_FEATURE_INIT (ip4_ipsec_output, static) = |
| 1049 | { |
Matus Fabian | 08a6f01 | 2016-11-15 06:08:51 -0800 | [diff] [blame] | 1050 | .arc_name = "ip4-output", |
Pierre Pfister | 057b356 | 2018-12-10 17:01:01 +0100 | [diff] [blame] | 1051 | .node_name = "ipsec4-output-feature", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1052 | .runs_before = VNET_FEATURES ("interface-output"), |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 1053 | }; |
| 1054 | |
| 1055 | /* Built-in ip4 tx feature path definition */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1056 | VNET_FEATURE_INIT (ip4_interface_output, static) = |
| 1057 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1058 | .arc_name = "ip4-output", |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 1059 | .node_name = "interface-output", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1060 | .runs_before = 0, /* not before any other features */ |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 1061 | }; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1062 | /* *INDENT-ON* */ |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 1063 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1064 | static clib_error_t * |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1065 | 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] | 1066 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1067 | ip4_main_t *im = &ip4_main; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1068 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1069 | /* Fill in lookup tables with default table (0). */ |
| 1070 | vec_validate (im->fib_index_by_sw_if_index, sw_if_index); |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 1071 | vec_validate (im->mfib_index_by_sw_if_index, sw_if_index); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1072 | |
Pavel Kotucek | 9f5a2b6 | 2017-06-14 13:56:55 +0200 | [diff] [blame] | 1073 | if (!is_add) |
| 1074 | { |
| 1075 | ip4_main_t *im4 = &ip4_main; |
| 1076 | ip_lookup_main_t *lm4 = &im4->lookup_main; |
| 1077 | ip_interface_address_t *ia = 0; |
| 1078 | ip4_address_t *address; |
| 1079 | vlib_main_t *vm = vlib_get_main (); |
| 1080 | |
Neale Ranns | 2ae2bc5 | 2018-03-16 03:22:39 -0700 | [diff] [blame] | 1081 | vnet_sw_interface_update_unnumbered (sw_if_index, ~0, 0); |
Pavel Kotucek | 9f5a2b6 | 2017-06-14 13:56:55 +0200 | [diff] [blame] | 1082 | /* *INDENT-OFF* */ |
Neale Ranns | 2ae2bc5 | 2018-03-16 03:22:39 -0700 | [diff] [blame] | 1083 | foreach_ip_interface_address (lm4, ia, sw_if_index, 0, |
Pavel Kotucek | 9f5a2b6 | 2017-06-14 13:56:55 +0200 | [diff] [blame] | 1084 | ({ |
| 1085 | address = ip_interface_address_get_address (lm4, ia); |
| 1086 | ip4_add_del_interface_address(vm, sw_if_index, address, ia->address_length, 1); |
| 1087 | })); |
| 1088 | /* *INDENT-ON* */ |
Neale Ranns | 03c254e | 2020-03-17 14:25:10 +0000 | [diff] [blame] | 1089 | ip4_mfib_interface_enable_disable (sw_if_index, 0); |
Pavel Kotucek | 9f5a2b6 | 2017-06-14 13:56:55 +0200 | [diff] [blame] | 1090 | } |
| 1091 | |
Neale Ranns | 8269d3d | 2018-01-30 09:02:20 -0800 | [diff] [blame] | 1092 | vnet_feature_enable_disable ("ip4-unicast", "ip4-not-enabled", sw_if_index, |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1093 | is_add, 0, 0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1094 | |
Neale Ranns | 8269d3d | 2018-01-30 09:02:20 -0800 | [diff] [blame] | 1095 | vnet_feature_enable_disable ("ip4-multicast", "ip4-not-enabled", |
| 1096 | sw_if_index, is_add, 0, 0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1097 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1098 | return /* no error */ 0; |
| 1099 | } |
| 1100 | |
| 1101 | VNET_SW_INTERFACE_ADD_DEL_FUNCTION (ip4_sw_interface_add_del); |
| 1102 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1103 | /* Global IP4 main. */ |
Benoît Ganne | 47727c0 | 2019-02-12 13:35:08 +0100 | [diff] [blame] | 1104 | #ifndef CLIB_MARCH_VARIANT |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1105 | ip4_main_t ip4_main; |
Benoît Ganne | 47727c0 | 2019-02-12 13:35:08 +0100 | [diff] [blame] | 1106 | #endif /* CLIB_MARCH_VARIANT */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1107 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1108 | static clib_error_t * |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1109 | ip4_lookup_init (vlib_main_t * vm) |
| 1110 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1111 | ip4_main_t *im = &ip4_main; |
| 1112 | clib_error_t *error; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1113 | uword i; |
| 1114 | |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1115 | if ((error = vlib_call_init_function (vm, vnet_feature_init))) |
| 1116 | return error; |
Neale Ranns | 1ec3652 | 2017-11-29 05:20:37 -0800 | [diff] [blame] | 1117 | if ((error = vlib_call_init_function (vm, ip4_mtrie_module_init))) |
| 1118 | return (error); |
| 1119 | if ((error = vlib_call_init_function (vm, fib_module_init))) |
| 1120 | return error; |
| 1121 | if ((error = vlib_call_init_function (vm, mfib_module_init))) |
| 1122 | return error; |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1123 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1124 | for (i = 0; i < ARRAY_LEN (im->fib_masks); i++) |
| 1125 | { |
| 1126 | u32 m; |
| 1127 | |
| 1128 | if (i < 32) |
| 1129 | m = pow2_mask (i) << (32 - i); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 1130 | else |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1131 | m = ~0; |
| 1132 | im->fib_masks[i] = clib_host_to_net_u32 (m); |
| 1133 | } |
| 1134 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1135 | ip_lookup_init (&im->lookup_main, /* is_ip6 */ 0); |
| 1136 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1137 | /* Create FIB with index 0 and table id of 0. */ |
Neale Ranns | 1500254 | 2017-09-10 04:39:11 -0700 | [diff] [blame] | 1138 | fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, 0, |
| 1139 | FIB_SOURCE_DEFAULT_ROUTE); |
| 1140 | mfib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, 0, |
| 1141 | MFIB_SOURCE_DEFAULT_ROUTE); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1142 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1143 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1144 | pg_node_t *pn; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1145 | pn = pg_get_node (ip4_lookup_node.index); |
| 1146 | pn->unformat_edit = unformat_pg_ip4_header; |
| 1147 | } |
| 1148 | |
| 1149 | { |
| 1150 | ethernet_arp_header_t h; |
| 1151 | |
Dave Barach | b7b9299 | 2018-10-17 10:38:51 -0400 | [diff] [blame] | 1152 | clib_memset (&h, 0, sizeof (h)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1153 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1154 | #define _16(f,v) h.f = clib_host_to_net_u16 (v); |
| 1155 | #define _8(f,v) h.f = v; |
| 1156 | _16 (l2_type, ETHERNET_ARP_HARDWARE_TYPE_ethernet); |
| 1157 | _16 (l3_type, ETHERNET_TYPE_IP4); |
| 1158 | _8 (n_l2_address_bytes, 6); |
| 1159 | _8 (n_l3_address_bytes, 4); |
| 1160 | _16 (opcode, ETHERNET_ARP_OPCODE_request); |
| 1161 | #undef _16 |
| 1162 | #undef _8 |
| 1163 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1164 | vlib_packet_template_init (vm, &im->ip4_arp_request_packet_template, |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1165 | /* data */ &h, |
| 1166 | sizeof (h), |
| 1167 | /* alloc chunk size */ 8, |
| 1168 | "ip4 arp"); |
| 1169 | } |
| 1170 | |
Dave Barach | 203c632 | 2016-06-26 10:29:03 -0400 | [diff] [blame] | 1171 | return error; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1172 | } |
| 1173 | |
| 1174 | VLIB_INIT_FUNCTION (ip4_lookup_init); |
| 1175 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1176 | typedef struct |
| 1177 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1178 | /* Adjacency taken. */ |
Vengada Govindan | f154448 | 2016-09-28 02:45:57 -0700 | [diff] [blame] | 1179 | u32 dpo_index; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1180 | u32 flow_hash; |
| 1181 | u32 fib_index; |
| 1182 | |
| 1183 | /* Packet data, possibly *after* rewrite. */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1184 | u8 packet_data[64 - 1 * sizeof (u32)]; |
| 1185 | } |
| 1186 | ip4_forward_next_trace_t; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1187 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1188 | #ifndef CLIB_MARCH_VARIANT |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1189 | u8 * |
| 1190 | format_ip4_forward_next_trace (u8 * s, va_list * args) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1191 | { |
| 1192 | CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); |
| 1193 | CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1194 | ip4_forward_next_trace_t *t = va_arg (*args, ip4_forward_next_trace_t *); |
Christophe Fontaine | d3c008d | 2017-10-02 18:10:54 +0200 | [diff] [blame] | 1195 | u32 indent = format_get_indent (s); |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1196 | s = format (s, "%U%U", |
John Lo | ac8146c | 2016-09-27 17:44:02 -0400 | [diff] [blame] | 1197 | format_white_space, indent, |
| 1198 | format_ip4_header, t->packet_data, sizeof (t->packet_data)); |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1199 | return s; |
| 1200 | } |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1201 | #endif |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1202 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1203 | static u8 * |
| 1204 | format_ip4_lookup_trace (u8 * s, va_list * args) |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1205 | { |
| 1206 | CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); |
| 1207 | CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1208 | ip4_forward_next_trace_t *t = va_arg (*args, ip4_forward_next_trace_t *); |
Christophe Fontaine | d3c008d | 2017-10-02 18:10:54 +0200 | [diff] [blame] | 1209 | u32 indent = format_get_indent (s); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1210 | |
John Lo | ac8146c | 2016-09-27 17:44:02 -0400 | [diff] [blame] | 1211 | s = format (s, "fib %d dpo-idx %d flow hash: 0x%08x", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1212 | t->fib_index, t->dpo_index, t->flow_hash); |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1213 | s = format (s, "\n%U%U", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1214 | format_white_space, indent, |
| 1215 | format_ip4_header, t->packet_data, sizeof (t->packet_data)); |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1216 | return s; |
| 1217 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1218 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1219 | static u8 * |
| 1220 | format_ip4_rewrite_trace (u8 * s, va_list * args) |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1221 | { |
| 1222 | CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); |
| 1223 | CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1224 | ip4_forward_next_trace_t *t = va_arg (*args, ip4_forward_next_trace_t *); |
Christophe Fontaine | d3c008d | 2017-10-02 18:10:54 +0200 | [diff] [blame] | 1225 | u32 indent = format_get_indent (s); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1226 | |
Vengada Govindan | f154448 | 2016-09-28 02:45:57 -0700 | [diff] [blame] | 1227 | 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] | 1228 | t->fib_index, t->dpo_index, format_ip_adjacency, |
| 1229 | t->dpo_index, FORMAT_IP_ADJACENCY_NONE, t->flow_hash); |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1230 | s = format (s, "\n%U%U", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1231 | format_white_space, indent, |
| 1232 | format_ip_adjacency_packet_data, |
Neale Ranns | 0b6a857 | 2019-10-30 17:34:14 +0000 | [diff] [blame] | 1233 | t->packet_data, sizeof (t->packet_data)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1234 | return s; |
| 1235 | } |
| 1236 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1237 | #ifndef CLIB_MARCH_VARIANT |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1238 | /* Common trace function for all ip4-forward next nodes. */ |
| 1239 | void |
| 1240 | ip4_forward_next_trace (vlib_main_t * vm, |
| 1241 | vlib_node_runtime_t * node, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1242 | vlib_frame_t * frame, vlib_rx_or_tx_t which_adj_index) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1243 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1244 | u32 *from, n_left; |
| 1245 | ip4_main_t *im = &ip4_main; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1246 | |
| 1247 | n_left = frame->n_vectors; |
| 1248 | from = vlib_frame_vector_args (frame); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 1249 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1250 | while (n_left >= 4) |
| 1251 | { |
| 1252 | u32 bi0, bi1; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1253 | vlib_buffer_t *b0, *b1; |
| 1254 | ip4_forward_next_trace_t *t0, *t1; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1255 | |
| 1256 | /* Prefetch next iteration. */ |
| 1257 | vlib_prefetch_buffer_with_index (vm, from[2], LOAD); |
| 1258 | vlib_prefetch_buffer_with_index (vm, from[3], LOAD); |
| 1259 | |
| 1260 | bi0 = from[0]; |
| 1261 | bi1 = from[1]; |
| 1262 | |
| 1263 | b0 = vlib_get_buffer (vm, bi0); |
| 1264 | b1 = vlib_get_buffer (vm, bi1); |
| 1265 | |
| 1266 | if (b0->flags & VLIB_BUFFER_IS_TRACED) |
| 1267 | { |
| 1268 | t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0])); |
Vengada Govindan | f154448 | 2016-09-28 02:45:57 -0700 | [diff] [blame] | 1269 | t0->dpo_index = vnet_buffer (b0)->ip.adj_index[which_adj_index]; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1270 | t0->flow_hash = vnet_buffer (b0)->ip.flow_hash; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1271 | t0->fib_index = |
| 1272 | (vnet_buffer (b0)->sw_if_index[VLIB_TX] != |
| 1273 | (u32) ~ 0) ? vnet_buffer (b0)->sw_if_index[VLIB_TX] : |
| 1274 | vec_elt (im->fib_index_by_sw_if_index, |
| 1275 | vnet_buffer (b0)->sw_if_index[VLIB_RX]); |
Pierre Pfister | 0febaf1 | 2016-06-08 12:23:21 +0100 | [diff] [blame] | 1276 | |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 1277 | clib_memcpy_fast (t0->packet_data, |
| 1278 | vlib_buffer_get_current (b0), |
| 1279 | sizeof (t0->packet_data)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1280 | } |
| 1281 | if (b1->flags & VLIB_BUFFER_IS_TRACED) |
| 1282 | { |
| 1283 | t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0])); |
Vengada Govindan | f154448 | 2016-09-28 02:45:57 -0700 | [diff] [blame] | 1284 | t1->dpo_index = vnet_buffer (b1)->ip.adj_index[which_adj_index]; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1285 | t1->flow_hash = vnet_buffer (b1)->ip.flow_hash; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1286 | t1->fib_index = |
| 1287 | (vnet_buffer (b1)->sw_if_index[VLIB_TX] != |
| 1288 | (u32) ~ 0) ? vnet_buffer (b1)->sw_if_index[VLIB_TX] : |
| 1289 | vec_elt (im->fib_index_by_sw_if_index, |
| 1290 | vnet_buffer (b1)->sw_if_index[VLIB_RX]); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 1291 | clib_memcpy_fast (t1->packet_data, vlib_buffer_get_current (b1), |
| 1292 | sizeof (t1->packet_data)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1293 | } |
| 1294 | from += 2; |
| 1295 | n_left -= 2; |
| 1296 | } |
| 1297 | |
| 1298 | while (n_left >= 1) |
| 1299 | { |
| 1300 | u32 bi0; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1301 | vlib_buffer_t *b0; |
| 1302 | ip4_forward_next_trace_t *t0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1303 | |
| 1304 | bi0 = from[0]; |
| 1305 | |
| 1306 | b0 = vlib_get_buffer (vm, bi0); |
| 1307 | |
| 1308 | if (b0->flags & VLIB_BUFFER_IS_TRACED) |
| 1309 | { |
| 1310 | t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0])); |
Vengada Govindan | f154448 | 2016-09-28 02:45:57 -0700 | [diff] [blame] | 1311 | t0->dpo_index = vnet_buffer (b0)->ip.adj_index[which_adj_index]; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1312 | t0->flow_hash = vnet_buffer (b0)->ip.flow_hash; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1313 | t0->fib_index = |
| 1314 | (vnet_buffer (b0)->sw_if_index[VLIB_TX] != |
| 1315 | (u32) ~ 0) ? vnet_buffer (b0)->sw_if_index[VLIB_TX] : |
| 1316 | vec_elt (im->fib_index_by_sw_if_index, |
| 1317 | vnet_buffer (b0)->sw_if_index[VLIB_RX]); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 1318 | clib_memcpy_fast (t0->packet_data, vlib_buffer_get_current (b0), |
| 1319 | sizeof (t0->packet_data)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1320 | } |
| 1321 | from += 1; |
| 1322 | n_left -= 1; |
| 1323 | } |
| 1324 | } |
| 1325 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1326 | /* Compute TCP/UDP/ICMP4 checksum in software. */ |
| 1327 | u16 |
| 1328 | ip4_tcp_udp_compute_checksum (vlib_main_t * vm, vlib_buffer_t * p0, |
| 1329 | ip4_header_t * ip0) |
| 1330 | { |
| 1331 | ip_csum_t sum0; |
| 1332 | u32 ip_header_length, payload_length_host_byte_order; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 1333 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1334 | /* Initialize checksum with ip header. */ |
| 1335 | ip_header_length = ip4_header_bytes (ip0); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1336 | payload_length_host_byte_order = |
| 1337 | clib_net_to_host_u16 (ip0->length) - ip_header_length; |
| 1338 | sum0 = |
| 1339 | clib_host_to_net_u32 (payload_length_host_byte_order + |
| 1340 | (ip0->protocol << 16)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1341 | |
| 1342 | if (BITS (uword) == 32) |
| 1343 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1344 | sum0 = |
| 1345 | ip_csum_with_carry (sum0, |
| 1346 | clib_mem_unaligned (&ip0->src_address, u32)); |
| 1347 | sum0 = |
| 1348 | ip_csum_with_carry (sum0, |
| 1349 | clib_mem_unaligned (&ip0->dst_address, u32)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1350 | } |
| 1351 | else |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1352 | sum0 = |
| 1353 | ip_csum_with_carry (sum0, clib_mem_unaligned (&ip0->src_address, u64)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1354 | |
Srikanth A | 02833ff | 2019-10-02 17:48:58 -0700 | [diff] [blame] | 1355 | return ip_calculate_l4_checksum (vm, p0, sum0, |
| 1356 | payload_length_host_byte_order, (u8 *) ip0, |
| 1357 | ip_header_length, NULL); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1358 | } |
| 1359 | |
John Lo | 37682e1 | 2016-11-30 12:51:39 -0500 | [diff] [blame] | 1360 | u32 |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1361 | ip4_tcp_udp_validate_checksum (vlib_main_t * vm, vlib_buffer_t * p0) |
| 1362 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1363 | ip4_header_t *ip0 = vlib_buffer_get_current (p0); |
| 1364 | udp_header_t *udp0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1365 | u16 sum16; |
| 1366 | |
| 1367 | ASSERT (ip0->protocol == IP_PROTOCOL_TCP |
| 1368 | || ip0->protocol == IP_PROTOCOL_UDP); |
| 1369 | |
| 1370 | udp0 = (void *) (ip0 + 1); |
| 1371 | if (ip0->protocol == IP_PROTOCOL_UDP && udp0->checksum == 0) |
| 1372 | { |
Damjan Marion | 213b5aa | 2017-07-13 21:19:27 +0200 | [diff] [blame] | 1373 | p0->flags |= (VNET_BUFFER_F_L4_CHECKSUM_COMPUTED |
| 1374 | | VNET_BUFFER_F_L4_CHECKSUM_CORRECT); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1375 | return p0->flags; |
| 1376 | } |
| 1377 | |
| 1378 | sum16 = ip4_tcp_udp_compute_checksum (vm, p0, ip0); |
| 1379 | |
Damjan Marion | 213b5aa | 2017-07-13 21:19:27 +0200 | [diff] [blame] | 1380 | p0->flags |= (VNET_BUFFER_F_L4_CHECKSUM_COMPUTED |
| 1381 | | ((sum16 == 0) << VNET_BUFFER_F_LOG2_L4_CHECKSUM_CORRECT)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1382 | |
| 1383 | return p0->flags; |
| 1384 | } |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1385 | #endif |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1386 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1387 | /* *INDENT-OFF* */ |
| 1388 | VNET_FEATURE_ARC_INIT (ip4_local) = |
| 1389 | { |
| 1390 | .arc_name = "ip4-local", |
| 1391 | .start_nodes = VNET_FEATURES ("ip4-local"), |
Dave Barach | a25def7 | 2018-11-26 11:04:45 -0500 | [diff] [blame] | 1392 | .last_in_arc = "ip4-local-end-of-arc", |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1393 | }; |
| 1394 | /* *INDENT-ON* */ |
| 1395 | |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1396 | static inline void |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1397 | ip4_local_l4_csum_validate (vlib_main_t * vm, vlib_buffer_t * p, |
| 1398 | ip4_header_t * ip, u8 is_udp, u8 * error, |
| 1399 | u8 * good_tcp_udp) |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1400 | { |
| 1401 | u32 flags0; |
| 1402 | flags0 = ip4_tcp_udp_validate_checksum (vm, p); |
| 1403 | *good_tcp_udp = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0; |
| 1404 | if (is_udp) |
| 1405 | { |
| 1406 | udp_header_t *udp; |
| 1407 | u32 ip_len, udp_len; |
| 1408 | i32 len_diff; |
| 1409 | udp = ip4_next_header (ip); |
| 1410 | /* Verify UDP length. */ |
| 1411 | ip_len = clib_net_to_host_u16 (ip->length); |
| 1412 | udp_len = clib_net_to_host_u16 (udp->length); |
| 1413 | |
| 1414 | len_diff = ip_len - udp_len; |
| 1415 | *good_tcp_udp &= len_diff >= 0; |
| 1416 | *error = len_diff < 0 ? IP4_ERROR_UDP_LENGTH : *error; |
| 1417 | } |
| 1418 | } |
| 1419 | |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1420 | #define ip4_local_csum_is_offloaded(_b) \ |
| 1421 | _b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM \ |
| 1422 | || _b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM |
| 1423 | |
| 1424 | #define ip4_local_need_csum_check(is_tcp_udp, _b) \ |
| 1425 | (is_tcp_udp && !(_b->flags & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED \ |
| 1426 | || ip4_local_csum_is_offloaded (_b))) |
| 1427 | |
| 1428 | #define ip4_local_csum_is_valid(_b) \ |
| 1429 | (_b->flags & VNET_BUFFER_F_L4_CHECKSUM_CORRECT \ |
| 1430 | || (ip4_local_csum_is_offloaded (_b))) != 0 |
| 1431 | |
| 1432 | static inline void |
| 1433 | ip4_local_check_l4_csum (vlib_main_t * vm, vlib_buffer_t * b, |
| 1434 | ip4_header_t * ih, u8 * error) |
| 1435 | { |
| 1436 | u8 is_udp, is_tcp_udp, good_tcp_udp; |
| 1437 | |
| 1438 | is_udp = ih->protocol == IP_PROTOCOL_UDP; |
| 1439 | is_tcp_udp = is_udp || ih->protocol == IP_PROTOCOL_TCP; |
| 1440 | |
| 1441 | if (PREDICT_FALSE (ip4_local_need_csum_check (is_tcp_udp, b))) |
| 1442 | ip4_local_l4_csum_validate (vm, b, ih, is_udp, error, &good_tcp_udp); |
| 1443 | else |
| 1444 | good_tcp_udp = ip4_local_csum_is_valid (b); |
| 1445 | |
| 1446 | ASSERT (IP4_ERROR_TCP_CHECKSUM + 1 == IP4_ERROR_UDP_CHECKSUM); |
| 1447 | *error = (is_tcp_udp && !good_tcp_udp |
| 1448 | ? IP4_ERROR_TCP_CHECKSUM + is_udp : *error); |
| 1449 | } |
| 1450 | |
| 1451 | static inline void |
| 1452 | ip4_local_check_l4_csum_x2 (vlib_main_t * vm, vlib_buffer_t ** b, |
| 1453 | ip4_header_t ** ih, u8 * error) |
| 1454 | { |
| 1455 | u8 is_udp[2], is_tcp_udp[2], good_tcp_udp[2]; |
| 1456 | |
| 1457 | is_udp[0] = ih[0]->protocol == IP_PROTOCOL_UDP; |
| 1458 | is_udp[1] = ih[1]->protocol == IP_PROTOCOL_UDP; |
| 1459 | |
| 1460 | is_tcp_udp[0] = is_udp[0] || ih[0]->protocol == IP_PROTOCOL_TCP; |
| 1461 | is_tcp_udp[1] = is_udp[1] || ih[1]->protocol == IP_PROTOCOL_TCP; |
| 1462 | |
| 1463 | good_tcp_udp[0] = ip4_local_csum_is_valid (b[0]); |
| 1464 | good_tcp_udp[1] = ip4_local_csum_is_valid (b[1]); |
| 1465 | |
| 1466 | if (PREDICT_FALSE (ip4_local_need_csum_check (is_tcp_udp[0], b[0]) |
| 1467 | || ip4_local_need_csum_check (is_tcp_udp[1], b[1]))) |
| 1468 | { |
| 1469 | if (is_tcp_udp[0]) |
| 1470 | ip4_local_l4_csum_validate (vm, b[0], ih[0], is_udp[0], &error[0], |
| 1471 | &good_tcp_udp[0]); |
| 1472 | if (is_tcp_udp[1]) |
| 1473 | ip4_local_l4_csum_validate (vm, b[1], ih[1], is_udp[1], &error[1], |
| 1474 | &good_tcp_udp[1]); |
| 1475 | } |
| 1476 | |
| 1477 | error[0] = (is_tcp_udp[0] && !good_tcp_udp[0] ? |
| 1478 | IP4_ERROR_TCP_CHECKSUM + is_udp[0] : error[0]); |
| 1479 | error[1] = (is_tcp_udp[1] && !good_tcp_udp[1] ? |
| 1480 | IP4_ERROR_TCP_CHECKSUM + is_udp[1] : error[1]); |
| 1481 | } |
| 1482 | |
| 1483 | static inline void |
| 1484 | ip4_local_set_next_and_error (vlib_node_runtime_t * error_node, |
| 1485 | vlib_buffer_t * b, u16 * next, u8 error, |
| 1486 | u8 head_of_feature_arc) |
| 1487 | { |
| 1488 | u8 arc_index = vnet_feat_arc_ip4_local.feature_arc_index; |
| 1489 | u32 next_index; |
| 1490 | |
| 1491 | *next = error != IP4_ERROR_UNKNOWN_PROTOCOL ? IP_LOCAL_NEXT_DROP : *next; |
| 1492 | b->error = error ? error_node->errors[error] : 0; |
| 1493 | if (head_of_feature_arc) |
| 1494 | { |
| 1495 | next_index = *next; |
| 1496 | if (PREDICT_TRUE (error == (u8) IP4_ERROR_UNKNOWN_PROTOCOL)) |
| 1497 | { |
| 1498 | vnet_feature_arc_start (arc_index, |
| 1499 | vnet_buffer (b)->sw_if_index[VLIB_RX], |
| 1500 | &next_index, b); |
| 1501 | *next = next_index; |
| 1502 | } |
| 1503 | } |
| 1504 | } |
| 1505 | |
| 1506 | typedef struct |
| 1507 | { |
| 1508 | ip4_address_t src; |
| 1509 | u32 lbi; |
| 1510 | u8 error; |
Neale Ranns | be2286b | 2018-12-09 12:54:51 -0800 | [diff] [blame] | 1511 | u8 first; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1512 | } ip4_local_last_check_t; |
| 1513 | |
| 1514 | static inline void |
| 1515 | ip4_local_check_src (vlib_buffer_t * b, ip4_header_t * ip0, |
| 1516 | ip4_local_last_check_t * last_check, u8 * error0) |
| 1517 | { |
| 1518 | ip4_fib_mtrie_leaf_t leaf0; |
| 1519 | ip4_fib_mtrie_t *mtrie0; |
| 1520 | const dpo_id_t *dpo0; |
| 1521 | load_balance_t *lb0; |
| 1522 | u32 lbi0; |
| 1523 | |
| 1524 | vnet_buffer (b)->ip.fib_index = |
| 1525 | vnet_buffer (b)->sw_if_index[VLIB_TX] != ~0 ? |
| 1526 | vnet_buffer (b)->sw_if_index[VLIB_TX] : vnet_buffer (b)->ip.fib_index; |
| 1527 | |
Matthew Smith | 44e6046 | 2019-07-06 19:27:29 -0500 | [diff] [blame] | 1528 | /* |
| 1529 | * vnet_buffer()->ip.adj_index[VLIB_RX] will be set to the index of the |
| 1530 | * adjacency for the destination address (the local interface address). |
| 1531 | * vnet_buffer()->ip.adj_index[VLIB_TX] will be set to the index of the |
| 1532 | * adjacency for the source address (the remote sender's address) |
| 1533 | */ |
Nitin Saxena | 2d18d2e | 2020-01-04 12:28:42 +0530 | [diff] [blame] | 1534 | if (PREDICT_TRUE (last_check->src.as_u32 != ip0->src_address.as_u32) || |
| 1535 | last_check->first) |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1536 | { |
| 1537 | mtrie0 = &ip4_fib_get (vnet_buffer (b)->ip.fib_index)->mtrie; |
| 1538 | leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, &ip0->src_address); |
| 1539 | leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, 2); |
| 1540 | leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, 3); |
| 1541 | lbi0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0); |
| 1542 | |
Matthew Smith | 44e6046 | 2019-07-06 19:27:29 -0500 | [diff] [blame] | 1543 | vnet_buffer (b)->ip.adj_index[VLIB_RX] = |
| 1544 | vnet_buffer (b)->ip.adj_index[VLIB_TX]; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1545 | vnet_buffer (b)->ip.adj_index[VLIB_TX] = lbi0; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1546 | |
| 1547 | lb0 = load_balance_get (lbi0); |
| 1548 | dpo0 = load_balance_get_bucket_i (lb0, 0); |
| 1549 | |
| 1550 | /* |
| 1551 | * Must have a route to source otherwise we drop the packet. |
| 1552 | * ip4 broadcasts are accepted, e.g. to make dhcp client work |
| 1553 | * |
| 1554 | * The checks are: |
| 1555 | * - the source is a recieve => it's from us => bogus, do this |
| 1556 | * first since it sets a different error code. |
| 1557 | * - uRPF check for any route to source - accept if passes. |
| 1558 | * - allow packets destined to the broadcast address from unknown sources |
| 1559 | */ |
| 1560 | |
| 1561 | *error0 = ((*error0 == IP4_ERROR_UNKNOWN_PROTOCOL |
| 1562 | && dpo0->dpoi_type == DPO_RECEIVE) ? |
| 1563 | IP4_ERROR_SPOOFED_LOCAL_PACKETS : *error0); |
| 1564 | *error0 = ((*error0 == IP4_ERROR_UNKNOWN_PROTOCOL |
| 1565 | && !fib_urpf_check_size (lb0->lb_urpf) |
| 1566 | && ip0->dst_address.as_u32 != 0xFFFFFFFF) ? |
| 1567 | IP4_ERROR_SRC_LOOKUP_MISS : *error0); |
| 1568 | |
| 1569 | last_check->src.as_u32 = ip0->src_address.as_u32; |
| 1570 | last_check->lbi = lbi0; |
| 1571 | last_check->error = *error0; |
Nitin Saxena | 2d18d2e | 2020-01-04 12:28:42 +0530 | [diff] [blame] | 1572 | last_check->first = 0; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1573 | } |
| 1574 | else |
| 1575 | { |
Matthew Smith | 44e6046 | 2019-07-06 19:27:29 -0500 | [diff] [blame] | 1576 | vnet_buffer (b)->ip.adj_index[VLIB_RX] = |
| 1577 | vnet_buffer (b)->ip.adj_index[VLIB_TX]; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1578 | vnet_buffer (b)->ip.adj_index[VLIB_TX] = last_check->lbi; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1579 | *error0 = last_check->error; |
| 1580 | } |
| 1581 | } |
| 1582 | |
| 1583 | static inline void |
| 1584 | ip4_local_check_src_x2 (vlib_buffer_t ** b, ip4_header_t ** ip, |
| 1585 | ip4_local_last_check_t * last_check, u8 * error) |
| 1586 | { |
| 1587 | ip4_fib_mtrie_leaf_t leaf[2]; |
| 1588 | ip4_fib_mtrie_t *mtrie[2]; |
| 1589 | const dpo_id_t *dpo[2]; |
| 1590 | load_balance_t *lb[2]; |
Neale Ranns | be2286b | 2018-12-09 12:54:51 -0800 | [diff] [blame] | 1591 | u32 not_last_hit; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1592 | u32 lbi[2]; |
| 1593 | |
Neale Ranns | be2286b | 2018-12-09 12:54:51 -0800 | [diff] [blame] | 1594 | not_last_hit = last_check->first; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1595 | not_last_hit |= ip[0]->src_address.as_u32 ^ last_check->src.as_u32; |
| 1596 | not_last_hit |= ip[1]->src_address.as_u32 ^ last_check->src.as_u32; |
| 1597 | |
| 1598 | vnet_buffer (b[0])->ip.fib_index = |
| 1599 | vnet_buffer (b[0])->sw_if_index[VLIB_TX] != ~0 ? |
| 1600 | vnet_buffer (b[0])->sw_if_index[VLIB_TX] : |
| 1601 | vnet_buffer (b[0])->ip.fib_index; |
| 1602 | |
| 1603 | vnet_buffer (b[1])->ip.fib_index = |
| 1604 | vnet_buffer (b[1])->sw_if_index[VLIB_TX] != ~0 ? |
| 1605 | vnet_buffer (b[1])->sw_if_index[VLIB_TX] : |
| 1606 | vnet_buffer (b[1])->ip.fib_index; |
| 1607 | |
Matthew Smith | 44e6046 | 2019-07-06 19:27:29 -0500 | [diff] [blame] | 1608 | /* |
| 1609 | * vnet_buffer()->ip.adj_index[VLIB_RX] will be set to the index of the |
| 1610 | * adjacency for the destination address (the local interface address). |
| 1611 | * vnet_buffer()->ip.adj_index[VLIB_TX] will be set to the index of the |
| 1612 | * adjacency for the source address (the remote sender's address) |
| 1613 | */ |
Nitin Saxena | 2d18d2e | 2020-01-04 12:28:42 +0530 | [diff] [blame] | 1614 | if (PREDICT_TRUE (not_last_hit)) |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1615 | { |
| 1616 | mtrie[0] = &ip4_fib_get (vnet_buffer (b[0])->ip.fib_index)->mtrie; |
| 1617 | mtrie[1] = &ip4_fib_get (vnet_buffer (b[1])->ip.fib_index)->mtrie; |
| 1618 | |
| 1619 | leaf[0] = ip4_fib_mtrie_lookup_step_one (mtrie[0], &ip[0]->src_address); |
| 1620 | leaf[1] = ip4_fib_mtrie_lookup_step_one (mtrie[1], &ip[1]->src_address); |
| 1621 | |
| 1622 | leaf[0] = ip4_fib_mtrie_lookup_step (mtrie[0], leaf[0], |
| 1623 | &ip[0]->src_address, 2); |
| 1624 | leaf[1] = ip4_fib_mtrie_lookup_step (mtrie[1], leaf[1], |
| 1625 | &ip[1]->src_address, 2); |
| 1626 | |
| 1627 | leaf[0] = ip4_fib_mtrie_lookup_step (mtrie[0], leaf[0], |
| 1628 | &ip[0]->src_address, 3); |
| 1629 | leaf[1] = ip4_fib_mtrie_lookup_step (mtrie[1], leaf[1], |
| 1630 | &ip[1]->src_address, 3); |
| 1631 | |
| 1632 | lbi[0] = ip4_fib_mtrie_leaf_get_adj_index (leaf[0]); |
| 1633 | lbi[1] = ip4_fib_mtrie_leaf_get_adj_index (leaf[1]); |
| 1634 | |
Matthew Smith | 44e6046 | 2019-07-06 19:27:29 -0500 | [diff] [blame] | 1635 | vnet_buffer (b[0])->ip.adj_index[VLIB_RX] = |
| 1636 | vnet_buffer (b[0])->ip.adj_index[VLIB_TX]; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1637 | vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = lbi[0]; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1638 | |
Matthew Smith | 44e6046 | 2019-07-06 19:27:29 -0500 | [diff] [blame] | 1639 | vnet_buffer (b[1])->ip.adj_index[VLIB_RX] = |
| 1640 | vnet_buffer (b[1])->ip.adj_index[VLIB_TX]; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1641 | vnet_buffer (b[1])->ip.adj_index[VLIB_TX] = lbi[1]; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1642 | |
| 1643 | lb[0] = load_balance_get (lbi[0]); |
| 1644 | lb[1] = load_balance_get (lbi[1]); |
| 1645 | |
| 1646 | dpo[0] = load_balance_get_bucket_i (lb[0], 0); |
| 1647 | dpo[1] = load_balance_get_bucket_i (lb[1], 0); |
| 1648 | |
| 1649 | error[0] = ((error[0] == IP4_ERROR_UNKNOWN_PROTOCOL && |
| 1650 | dpo[0]->dpoi_type == DPO_RECEIVE) ? |
| 1651 | IP4_ERROR_SPOOFED_LOCAL_PACKETS : error[0]); |
| 1652 | error[0] = ((error[0] == IP4_ERROR_UNKNOWN_PROTOCOL && |
| 1653 | !fib_urpf_check_size (lb[0]->lb_urpf) && |
| 1654 | ip[0]->dst_address.as_u32 != 0xFFFFFFFF) |
| 1655 | ? IP4_ERROR_SRC_LOOKUP_MISS : error[0]); |
| 1656 | |
| 1657 | error[1] = ((error[1] == IP4_ERROR_UNKNOWN_PROTOCOL && |
| 1658 | dpo[1]->dpoi_type == DPO_RECEIVE) ? |
| 1659 | IP4_ERROR_SPOOFED_LOCAL_PACKETS : error[1]); |
| 1660 | error[1] = ((error[1] == IP4_ERROR_UNKNOWN_PROTOCOL && |
| 1661 | !fib_urpf_check_size (lb[1]->lb_urpf) && |
| 1662 | ip[1]->dst_address.as_u32 != 0xFFFFFFFF) |
| 1663 | ? IP4_ERROR_SRC_LOOKUP_MISS : error[1]); |
| 1664 | |
| 1665 | last_check->src.as_u32 = ip[1]->src_address.as_u32; |
| 1666 | last_check->lbi = lbi[1]; |
| 1667 | last_check->error = error[1]; |
Nitin Saxena | 2d18d2e | 2020-01-04 12:28:42 +0530 | [diff] [blame] | 1668 | last_check->first = 0; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1669 | } |
| 1670 | else |
| 1671 | { |
Matthew Smith | 44e6046 | 2019-07-06 19:27:29 -0500 | [diff] [blame] | 1672 | vnet_buffer (b[0])->ip.adj_index[VLIB_RX] = |
| 1673 | vnet_buffer (b[0])->ip.adj_index[VLIB_TX]; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1674 | vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = last_check->lbi; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1675 | |
Matthew Smith | 44e6046 | 2019-07-06 19:27:29 -0500 | [diff] [blame] | 1676 | vnet_buffer (b[1])->ip.adj_index[VLIB_RX] = |
| 1677 | vnet_buffer (b[1])->ip.adj_index[VLIB_TX]; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1678 | vnet_buffer (b[1])->ip.adj_index[VLIB_TX] = last_check->lbi; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1679 | |
| 1680 | error[0] = last_check->error; |
| 1681 | error[1] = last_check->error; |
| 1682 | } |
| 1683 | } |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1684 | |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1685 | enum ip_local_packet_type_e |
| 1686 | { |
| 1687 | IP_LOCAL_PACKET_TYPE_L4, |
| 1688 | IP_LOCAL_PACKET_TYPE_NAT, |
Juraj Sloboda | 3048b63 | 2018-10-02 11:13:53 +0200 | [diff] [blame] | 1689 | IP_LOCAL_PACKET_TYPE_FRAG, |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1690 | }; |
| 1691 | |
| 1692 | /** |
| 1693 | * Determine packet type and next node. |
| 1694 | * |
| 1695 | * The expectation is that all packets that are not L4 will skip |
| 1696 | * checksums and source checks. |
| 1697 | */ |
| 1698 | always_inline u8 |
| 1699 | ip4_local_classify (vlib_buffer_t * b, ip4_header_t * ip, u16 * next) |
| 1700 | { |
| 1701 | ip_lookup_main_t *lm = &ip4_main.lookup_main; |
| 1702 | |
Juraj Sloboda | 3048b63 | 2018-10-02 11:13:53 +0200 | [diff] [blame] | 1703 | if (PREDICT_FALSE (ip4_is_fragment (ip))) |
| 1704 | { |
| 1705 | *next = IP_LOCAL_NEXT_REASSEMBLY; |
| 1706 | return IP_LOCAL_PACKET_TYPE_FRAG; |
| 1707 | } |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1708 | if (PREDICT_FALSE (b->flags & VNET_BUFFER_F_IS_NATED)) |
| 1709 | { |
| 1710 | *next = lm->local_next_by_ip_protocol[ip->protocol]; |
| 1711 | return IP_LOCAL_PACKET_TYPE_NAT; |
| 1712 | } |
| 1713 | |
| 1714 | *next = lm->local_next_by_ip_protocol[ip->protocol]; |
| 1715 | return IP_LOCAL_PACKET_TYPE_L4; |
| 1716 | } |
| 1717 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1718 | static inline uword |
| 1719 | ip4_local_inline (vlib_main_t * vm, |
| 1720 | vlib_node_runtime_t * node, |
| 1721 | vlib_frame_t * frame, int head_of_feature_arc) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1722 | { |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1723 | u32 *from, n_left_from; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1724 | vlib_node_runtime_t *error_node = |
Florin Coras | fa2a316 | 2020-02-11 03:01:19 +0000 | [diff] [blame] | 1725 | vlib_node_get_runtime (vm, ip4_local_node.index); |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1726 | u16 nexts[VLIB_FRAME_SIZE], *next; |
| 1727 | vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b; |
| 1728 | ip4_header_t *ip[2]; |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1729 | u8 error[2], pt[2]; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1730 | |
| 1731 | ip4_local_last_check_t last_check = { |
Neale Ranns | be2286b | 2018-12-09 12:54:51 -0800 | [diff] [blame] | 1732 | /* |
| 1733 | * 0.0.0.0 can appear as the source address of an IP packet, |
| 1734 | * as can any other address, hence the need to use the 'first' |
| 1735 | * member to make sure the .lbi is initialised for the first |
| 1736 | * packet. |
| 1737 | */ |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1738 | .src = {.as_u32 = 0}, |
| 1739 | .lbi = ~0, |
Neale Ranns | be2286b | 2018-12-09 12:54:51 -0800 | [diff] [blame] | 1740 | .error = IP4_ERROR_UNKNOWN_PROTOCOL, |
| 1741 | .first = 1, |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1742 | }; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1743 | |
| 1744 | from = vlib_frame_vector_args (frame); |
| 1745 | n_left_from = frame->n_vectors; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 1746 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1747 | if (node->flags & VLIB_NODE_FLAG_TRACE) |
| 1748 | ip4_forward_next_trace (vm, node, frame, VLIB_TX); |
| 1749 | |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1750 | vlib_get_buffers (vm, from, bufs, n_left_from); |
| 1751 | b = bufs; |
| 1752 | next = nexts; |
| 1753 | |
| 1754 | while (n_left_from >= 6) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1755 | { |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1756 | u8 not_batch = 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1757 | |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1758 | /* Prefetch next iteration. */ |
| 1759 | { |
| 1760 | vlib_prefetch_buffer_header (b[4], LOAD); |
| 1761 | vlib_prefetch_buffer_header (b[5], LOAD); |
| 1762 | |
| 1763 | CLIB_PREFETCH (b[4]->data, CLIB_CACHE_LINE_BYTES, LOAD); |
| 1764 | CLIB_PREFETCH (b[5]->data, CLIB_CACHE_LINE_BYTES, LOAD); |
| 1765 | } |
| 1766 | |
| 1767 | error[0] = error[1] = IP4_ERROR_UNKNOWN_PROTOCOL; |
| 1768 | |
| 1769 | ip[0] = vlib_buffer_get_current (b[0]); |
| 1770 | ip[1] = vlib_buffer_get_current (b[1]); |
| 1771 | |
| 1772 | vnet_buffer (b[0])->l3_hdr_offset = b[0]->current_data; |
| 1773 | vnet_buffer (b[1])->l3_hdr_offset = b[1]->current_data; |
| 1774 | |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1775 | pt[0] = ip4_local_classify (b[0], ip[0], &next[0]); |
| 1776 | pt[1] = ip4_local_classify (b[1], ip[1], &next[1]); |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1777 | |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1778 | not_batch = pt[0] ^ pt[1]; |
| 1779 | |
| 1780 | if (head_of_feature_arc == 0 || (pt[0] && not_batch == 0)) |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1781 | goto skip_checks; |
| 1782 | |
| 1783 | if (PREDICT_TRUE (not_batch == 0)) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1784 | { |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1785 | ip4_local_check_l4_csum_x2 (vm, b, ip, error); |
| 1786 | ip4_local_check_src_x2 (b, ip, &last_check, error); |
| 1787 | } |
| 1788 | else |
| 1789 | { |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1790 | if (!pt[0]) |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1791 | { |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1792 | ip4_local_check_l4_csum (vm, b[0], ip[0], &error[0]); |
| 1793 | ip4_local_check_src (b[0], ip[0], &last_check, &error[0]); |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1794 | } |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1795 | if (!pt[1]) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1796 | { |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1797 | ip4_local_check_l4_csum (vm, b[1], ip[1], &error[1]); |
| 1798 | ip4_local_check_src (b[1], ip[1], &last_check, &error[1]); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1799 | } |
| 1800 | } |
| 1801 | |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1802 | skip_checks: |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1803 | |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1804 | ip4_local_set_next_and_error (error_node, b[0], &next[0], error[0], |
| 1805 | head_of_feature_arc); |
| 1806 | ip4_local_set_next_and_error (error_node, b[1], &next[1], error[1], |
| 1807 | head_of_feature_arc); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 1808 | |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1809 | b += 2; |
| 1810 | next += 2; |
| 1811 | n_left_from -= 2; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1812 | } |
| 1813 | |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1814 | while (n_left_from > 0) |
| 1815 | { |
| 1816 | error[0] = IP4_ERROR_UNKNOWN_PROTOCOL; |
| 1817 | |
| 1818 | ip[0] = vlib_buffer_get_current (b[0]); |
| 1819 | vnet_buffer (b[0])->l3_hdr_offset = b[0]->current_data; |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1820 | pt[0] = ip4_local_classify (b[0], ip[0], &next[0]); |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1821 | |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1822 | if (head_of_feature_arc == 0 || pt[0]) |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1823 | goto skip_check; |
| 1824 | |
| 1825 | ip4_local_check_l4_csum (vm, b[0], ip[0], &error[0]); |
| 1826 | ip4_local_check_src (b[0], ip[0], &last_check, &error[0]); |
| 1827 | |
| 1828 | skip_check: |
| 1829 | |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1830 | ip4_local_set_next_and_error (error_node, b[0], &next[0], error[0], |
| 1831 | head_of_feature_arc); |
| 1832 | |
| 1833 | b += 1; |
| 1834 | next += 1; |
| 1835 | n_left_from -= 1; |
| 1836 | } |
| 1837 | |
| 1838 | vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1839 | return frame->n_vectors; |
| 1840 | } |
| 1841 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1842 | VLIB_NODE_FN (ip4_local_node) (vlib_main_t * vm, vlib_node_runtime_t * node, |
| 1843 | vlib_frame_t * frame) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1844 | { |
| 1845 | return ip4_local_inline (vm, node, frame, 1 /* head of feature arc */ ); |
| 1846 | } |
| 1847 | |
| 1848 | /* *INDENT-OFF* */ |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 1849 | VLIB_REGISTER_NODE (ip4_local_node) = |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1850 | { |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1851 | .name = "ip4-local", |
| 1852 | .vector_size = sizeof (u32), |
| 1853 | .format_trace = format_ip4_forward_next_trace, |
Florin Coras | fa2a316 | 2020-02-11 03:01:19 +0000 | [diff] [blame] | 1854 | .n_errors = IP4_N_ERROR, |
| 1855 | .error_strings = ip4_error_strings, |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1856 | .n_next_nodes = IP_LOCAL_N_NEXT, |
| 1857 | .next_nodes = |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1858 | { |
Neale Ranns | d91c1db | 2017-07-31 02:30:50 -0700 | [diff] [blame] | 1859 | [IP_LOCAL_NEXT_DROP] = "ip4-drop", |
| 1860 | [IP_LOCAL_NEXT_PUNT] = "ip4-punt", |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1861 | [IP_LOCAL_NEXT_UDP_LOOKUP] = "ip4-udp-lookup", |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1862 | [IP_LOCAL_NEXT_ICMP] = "ip4-icmp-input", |
Klement Sekera | 896c896 | 2019-06-24 11:52:49 +0000 | [diff] [blame] | 1863 | [IP_LOCAL_NEXT_REASSEMBLY] = "ip4-full-reassembly", |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1864 | }, |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1865 | }; |
| 1866 | /* *INDENT-ON* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1867 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1868 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1869 | VLIB_NODE_FN (ip4_local_end_of_arc_node) (vlib_main_t * vm, |
| 1870 | vlib_node_runtime_t * node, |
| 1871 | vlib_frame_t * frame) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1872 | { |
| 1873 | return ip4_local_inline (vm, node, frame, 0 /* head of feature arc */ ); |
| 1874 | } |
| 1875 | |
| 1876 | /* *INDENT-OFF* */ |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1877 | VLIB_REGISTER_NODE (ip4_local_end_of_arc_node) = { |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1878 | .name = "ip4-local-end-of-arc", |
| 1879 | .vector_size = sizeof (u32), |
| 1880 | |
| 1881 | .format_trace = format_ip4_forward_next_trace, |
| 1882 | .sibling_of = "ip4-local", |
| 1883 | }; |
| 1884 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1885 | VNET_FEATURE_INIT (ip4_local_end_of_arc, static) = { |
| 1886 | .arc_name = "ip4-local", |
| 1887 | .node_name = "ip4-local-end-of-arc", |
| 1888 | .runs_before = 0, /* not before any other features */ |
| 1889 | }; |
| 1890 | /* *INDENT-ON* */ |
| 1891 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1892 | #ifndef CLIB_MARCH_VARIANT |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1893 | void |
| 1894 | ip4_register_protocol (u32 protocol, u32 node_index) |
| 1895 | { |
| 1896 | vlib_main_t *vm = vlib_get_main (); |
| 1897 | ip4_main_t *im = &ip4_main; |
| 1898 | ip_lookup_main_t *lm = &im->lookup_main; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1899 | |
| 1900 | ASSERT (protocol < ARRAY_LEN (lm->local_next_by_ip_protocol)); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1901 | lm->local_next_by_ip_protocol[protocol] = |
| 1902 | vlib_node_add_next (vm, ip4_local_node.index, node_index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1903 | } |
Neale Ranns | b538dd8 | 2019-05-21 06:54:54 -0700 | [diff] [blame] | 1904 | |
| 1905 | void |
| 1906 | ip4_unregister_protocol (u32 protocol) |
| 1907 | { |
| 1908 | ip4_main_t *im = &ip4_main; |
| 1909 | ip_lookup_main_t *lm = &im->lookup_main; |
| 1910 | |
| 1911 | ASSERT (protocol < ARRAY_LEN (lm->local_next_by_ip_protocol)); |
| 1912 | lm->local_next_by_ip_protocol[protocol] = IP_LOCAL_NEXT_PUNT; |
| 1913 | } |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1914 | #endif |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1915 | |
| 1916 | static clib_error_t * |
| 1917 | show_ip_local_command_fn (vlib_main_t * vm, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1918 | unformat_input_t * input, vlib_cli_command_t * cmd) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1919 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1920 | ip4_main_t *im = &ip4_main; |
| 1921 | ip_lookup_main_t *lm = &im->lookup_main; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1922 | int i; |
| 1923 | |
| 1924 | vlib_cli_output (vm, "Protocols handled by ip4_local"); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1925 | 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] | 1926 | { |
| 1927 | if (lm->local_next_by_ip_protocol[i] != IP_LOCAL_NEXT_PUNT) |
Pierre Pfister | 1bfd372 | 2017-09-18 11:40:32 +0200 | [diff] [blame] | 1928 | { |
| 1929 | u32 node_index = vlib_get_node (vm, |
| 1930 | ip4_local_node.index)-> |
| 1931 | next_nodes[lm->local_next_by_ip_protocol[i]]; |
Neale Ranns | b538dd8 | 2019-05-21 06:54:54 -0700 | [diff] [blame] | 1932 | vlib_cli_output (vm, "%U: %U", format_ip_protocol, i, |
| 1933 | format_vlib_node_name, vm, node_index); |
Pierre Pfister | 1bfd372 | 2017-09-18 11:40:32 +0200 | [diff] [blame] | 1934 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1935 | } |
| 1936 | return 0; |
| 1937 | } |
| 1938 | |
| 1939 | |
| 1940 | |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 1941 | /*? |
| 1942 | * Display the set of protocols handled by the local IPv4 stack. |
| 1943 | * |
| 1944 | * @cliexpar |
| 1945 | * Example of how to display local protocol table: |
| 1946 | * @cliexstart{show ip local} |
| 1947 | * Protocols handled by ip4_local |
| 1948 | * 1 |
| 1949 | * 17 |
| 1950 | * 47 |
| 1951 | * @cliexend |
| 1952 | ?*/ |
| 1953 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1954 | VLIB_CLI_COMMAND (show_ip_local, static) = |
| 1955 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1956 | .path = "show ip local", |
| 1957 | .function = show_ip_local_command_fn, |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 1958 | .short_help = "show ip local", |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1959 | }; |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 1960 | /* *INDENT-ON* */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1961 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1962 | typedef enum |
| 1963 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1964 | IP4_REWRITE_NEXT_DROP, |
Chris Luke | 816f3e1 | 2016-06-14 16:24:47 -0400 | [diff] [blame] | 1965 | IP4_REWRITE_NEXT_ICMP_ERROR, |
Ole Troan | 313f7e2 | 2018-04-10 16:02:51 +0200 | [diff] [blame] | 1966 | IP4_REWRITE_NEXT_FRAGMENT, |
| 1967 | IP4_REWRITE_N_NEXT /* Last */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1968 | } ip4_rewrite_next_t; |
| 1969 | |
Neale Ranns | 889fe94 | 2017-06-01 05:43:19 -0400 | [diff] [blame] | 1970 | /** |
| 1971 | * This bits of an IPv4 address to mask to construct a multicast |
| 1972 | * MAC address |
| 1973 | */ |
| 1974 | #if CLIB_ARCH_IS_BIG_ENDIAN |
| 1975 | #define IP4_MCAST_ADDR_MASK 0x007fffff |
| 1976 | #else |
| 1977 | #define IP4_MCAST_ADDR_MASK 0xffff7f00 |
| 1978 | #endif |
| 1979 | |
Ole Troan | 8a9c8f1 | 2018-05-18 11:01:31 +0200 | [diff] [blame] | 1980 | always_inline void |
| 1981 | ip4_mtu_check (vlib_buffer_t * b, u16 packet_len, |
Ole Troan | eb284a1 | 2019-10-09 13:33:19 +0200 | [diff] [blame] | 1982 | u16 adj_packet_bytes, bool df, u16 * next, |
| 1983 | u8 is_midchain, u32 * error) |
Ole Troan | 8a9c8f1 | 2018-05-18 11:01:31 +0200 | [diff] [blame] | 1984 | { |
| 1985 | if (packet_len > adj_packet_bytes) |
| 1986 | { |
| 1987 | *error = IP4_ERROR_MTU_EXCEEDED; |
| 1988 | if (df) |
| 1989 | { |
| 1990 | icmp4_error_set_vnet_buffer |
| 1991 | (b, ICMP4_destination_unreachable, |
| 1992 | ICMP4_destination_unreachable_fragmentation_needed_and_dont_fragment_set, |
| 1993 | adj_packet_bytes); |
| 1994 | *next = IP4_REWRITE_NEXT_ICMP_ERROR; |
| 1995 | } |
| 1996 | else |
| 1997 | { |
Ole Troan | 313f7e2 | 2018-04-10 16:02:51 +0200 | [diff] [blame] | 1998 | /* IP fragmentation */ |
Ole Troan | 282093f | 2018-09-19 12:38:51 +0200 | [diff] [blame] | 1999 | ip_frag_set_vnet_buffer (b, adj_packet_bytes, |
Neale Ranns | 0b6a857 | 2019-10-30 17:34:14 +0000 | [diff] [blame] | 2000 | (is_midchain ? |
Ole Troan | eb284a1 | 2019-10-09 13:33:19 +0200 | [diff] [blame] | 2001 | IP_FRAG_NEXT_IP_REWRITE_MIDCHAIN : |
| 2002 | IP_FRAG_NEXT_IP_REWRITE), 0); |
Ole Troan | 313f7e2 | 2018-04-10 16:02:51 +0200 | [diff] [blame] | 2003 | *next = IP4_REWRITE_NEXT_FRAGMENT; |
Ole Troan | 8a9c8f1 | 2018-05-18 11:01:31 +0200 | [diff] [blame] | 2004 | } |
| 2005 | } |
| 2006 | } |
| 2007 | |
Neale Ranns | 0b6a857 | 2019-10-30 17:34:14 +0000 | [diff] [blame] | 2008 | /* increment TTL & update checksum. |
| 2009 | Works either endian, so no need for byte swap. */ |
| 2010 | static_always_inline void |
| 2011 | ip4_ttl_inc (vlib_buffer_t * b, ip4_header_t * ip) |
| 2012 | { |
| 2013 | i32 ttl; |
| 2014 | u32 checksum; |
| 2015 | if (PREDICT_FALSE (b->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED)) |
Neale Ranns | 88cecfa | 2020-04-08 08:28:06 -0400 | [diff] [blame] | 2016 | return; |
Neale Ranns | 0b6a857 | 2019-10-30 17:34:14 +0000 | [diff] [blame] | 2017 | |
| 2018 | ttl = ip->ttl; |
| 2019 | |
| 2020 | checksum = ip->checksum - clib_host_to_net_u16 (0x0100); |
| 2021 | checksum += checksum >= 0xffff; |
| 2022 | |
| 2023 | ip->checksum = checksum; |
| 2024 | ttl += 1; |
| 2025 | ip->ttl = ttl; |
| 2026 | |
Benoît Ganne | 6e334e3 | 2020-08-31 18:59:34 +0200 | [diff] [blame] | 2027 | ASSERT (ip4_header_checksum_is_valid (ip)); |
Neale Ranns | 0b6a857 | 2019-10-30 17:34:14 +0000 | [diff] [blame] | 2028 | } |
| 2029 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2030 | /* Decrement TTL & update checksum. |
| 2031 | Works either endian, so no need for byte swap. */ |
| 2032 | static_always_inline void |
| 2033 | ip4_ttl_and_checksum_check (vlib_buffer_t * b, ip4_header_t * ip, u16 * next, |
| 2034 | u32 * error) |
| 2035 | { |
| 2036 | i32 ttl; |
| 2037 | u32 checksum; |
| 2038 | if (PREDICT_FALSE (b->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED)) |
Neale Ranns | 88cecfa | 2020-04-08 08:28:06 -0400 | [diff] [blame] | 2039 | return; |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2040 | |
| 2041 | ttl = ip->ttl; |
| 2042 | |
| 2043 | /* Input node should have reject packets with ttl 0. */ |
| 2044 | ASSERT (ip->ttl > 0); |
| 2045 | |
| 2046 | checksum = ip->checksum + clib_host_to_net_u16 (0x0100); |
| 2047 | checksum += checksum >= 0xffff; |
| 2048 | |
| 2049 | ip->checksum = checksum; |
| 2050 | ttl -= 1; |
| 2051 | ip->ttl = ttl; |
| 2052 | |
| 2053 | /* |
| 2054 | * If the ttl drops below 1 when forwarding, generate |
| 2055 | * an ICMP response. |
| 2056 | */ |
| 2057 | if (PREDICT_FALSE (ttl <= 0)) |
| 2058 | { |
| 2059 | *error = IP4_ERROR_TIME_EXPIRED; |
| 2060 | vnet_buffer (b)->sw_if_index[VLIB_TX] = (u32) ~ 0; |
| 2061 | icmp4_error_set_vnet_buffer (b, ICMP4_time_exceeded, |
| 2062 | ICMP4_time_exceeded_ttl_exceeded_in_transit, |
| 2063 | 0); |
| 2064 | *next = IP4_REWRITE_NEXT_ICMP_ERROR; |
| 2065 | } |
| 2066 | |
| 2067 | /* Verify checksum. */ |
Benoît Ganne | 6e334e3 | 2020-08-31 18:59:34 +0200 | [diff] [blame] | 2068 | ASSERT (ip4_header_checksum_is_valid (ip) || |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2069 | (b->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM)); |
| 2070 | } |
| 2071 | |
| 2072 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2073 | always_inline uword |
Andrew Yourtchenko | 6a7cff7 | 2018-10-12 16:09:22 +0200 | [diff] [blame] | 2074 | ip4_rewrite_inline_with_gso (vlib_main_t * vm, |
| 2075 | vlib_node_runtime_t * node, |
| 2076 | vlib_frame_t * frame, |
Mohsin Kazmi | 3f5594d | 2019-12-03 18:56:26 +0100 | [diff] [blame] | 2077 | int do_counters, int is_midchain, int is_mcast) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2078 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2079 | ip_lookup_main_t *lm = &ip4_main.lookup_main; |
| 2080 | u32 *from = vlib_frame_vector_args (frame); |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2081 | vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b; |
| 2082 | u16 nexts[VLIB_FRAME_SIZE], *next; |
| 2083 | u32 n_left_from; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2084 | vlib_node_runtime_t *error_node = |
| 2085 | vlib_node_get_runtime (vm, ip4_input_node.index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2086 | |
| 2087 | n_left_from = frame->n_vectors; |
Damjan Marion | 067cd62 | 2018-07-11 12:47:43 +0200 | [diff] [blame] | 2088 | u32 thread_index = vm->thread_index; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2089 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2090 | vlib_get_buffers (vm, from, bufs, n_left_from); |
| 2091 | clib_memset_u16 (nexts, IP4_REWRITE_NEXT_DROP, n_left_from); |
| 2092 | |
Lijian.Zhang | 840f64b | 2019-07-09 17:54:32 +0800 | [diff] [blame] | 2093 | #if (CLIB_N_PREFETCHES >= 8) |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2094 | if (n_left_from >= 6) |
| 2095 | { |
| 2096 | int i; |
Simon Zhang | 5a5a869 | 2018-11-26 17:15:24 +0800 | [diff] [blame] | 2097 | for (i = 2; i < 6; i++) |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2098 | vlib_prefetch_buffer_header (bufs[i], LOAD); |
| 2099 | } |
| 2100 | |
| 2101 | next = nexts; |
| 2102 | b = bufs; |
| 2103 | while (n_left_from >= 8) |
| 2104 | { |
Neale Ranns | 960eeea | 2019-12-02 23:28:50 +0000 | [diff] [blame] | 2105 | const ip_adjacency_t *adj0, *adj1; |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2106 | ip4_header_t *ip0, *ip1; |
| 2107 | u32 rw_len0, error0, adj_index0; |
| 2108 | u32 rw_len1, error1, adj_index1; |
| 2109 | u32 tx_sw_if_index0, tx_sw_if_index1; |
| 2110 | u8 *p; |
| 2111 | |
| 2112 | vlib_prefetch_buffer_header (b[6], LOAD); |
| 2113 | vlib_prefetch_buffer_header (b[7], LOAD); |
| 2114 | |
| 2115 | adj_index0 = vnet_buffer (b[0])->ip.adj_index[VLIB_TX]; |
| 2116 | adj_index1 = vnet_buffer (b[1])->ip.adj_index[VLIB_TX]; |
| 2117 | |
| 2118 | /* |
| 2119 | * pre-fetch the per-adjacency counters |
| 2120 | */ |
| 2121 | if (do_counters) |
| 2122 | { |
| 2123 | vlib_prefetch_combined_counter (&adjacency_counters, |
| 2124 | thread_index, adj_index0); |
| 2125 | vlib_prefetch_combined_counter (&adjacency_counters, |
| 2126 | thread_index, adj_index1); |
| 2127 | } |
| 2128 | |
| 2129 | ip0 = vlib_buffer_get_current (b[0]); |
| 2130 | ip1 = vlib_buffer_get_current (b[1]); |
| 2131 | |
| 2132 | error0 = error1 = IP4_ERROR_NONE; |
| 2133 | |
| 2134 | ip4_ttl_and_checksum_check (b[0], ip0, next + 0, &error0); |
| 2135 | ip4_ttl_and_checksum_check (b[1], ip1, next + 1, &error1); |
| 2136 | |
| 2137 | /* Rewrite packet header and updates lengths. */ |
| 2138 | adj0 = adj_get (adj_index0); |
| 2139 | adj1 = adj_get (adj_index1); |
| 2140 | |
| 2141 | /* Worth pipelining. No guarantee that adj0,1 are hot... */ |
| 2142 | rw_len0 = adj0[0].rewrite_header.data_bytes; |
| 2143 | rw_len1 = adj1[0].rewrite_header.data_bytes; |
| 2144 | vnet_buffer (b[0])->ip.save_rewrite_length = rw_len0; |
| 2145 | vnet_buffer (b[1])->ip.save_rewrite_length = rw_len1; |
| 2146 | |
| 2147 | p = vlib_buffer_get_current (b[2]); |
| 2148 | CLIB_PREFETCH (p - CLIB_CACHE_LINE_BYTES, CLIB_CACHE_LINE_BYTES, STORE); |
| 2149 | CLIB_PREFETCH (p, CLIB_CACHE_LINE_BYTES, LOAD); |
| 2150 | |
| 2151 | p = vlib_buffer_get_current (b[3]); |
| 2152 | CLIB_PREFETCH (p - CLIB_CACHE_LINE_BYTES, CLIB_CACHE_LINE_BYTES, STORE); |
| 2153 | CLIB_PREFETCH (p, CLIB_CACHE_LINE_BYTES, LOAD); |
| 2154 | |
| 2155 | /* Check MTU of outgoing interface. */ |
Andrew Yourtchenko | 6a7cff7 | 2018-10-12 16:09:22 +0200 | [diff] [blame] | 2156 | u16 ip0_len = clib_net_to_host_u16 (ip0->length); |
| 2157 | u16 ip1_len = clib_net_to_host_u16 (ip1->length); |
| 2158 | |
Mohsin Kazmi | 3f5594d | 2019-12-03 18:56:26 +0100 | [diff] [blame] | 2159 | if (b[0]->flags & VNET_BUFFER_F_GSO) |
Andrew Yourtchenko | 6a7cff7 | 2018-10-12 16:09:22 +0200 | [diff] [blame] | 2160 | ip0_len = gso_mtu_sz (b[0]); |
Mohsin Kazmi | 3f5594d | 2019-12-03 18:56:26 +0100 | [diff] [blame] | 2161 | if (b[1]->flags & VNET_BUFFER_F_GSO) |
Andrew Yourtchenko | 6a7cff7 | 2018-10-12 16:09:22 +0200 | [diff] [blame] | 2162 | ip1_len = gso_mtu_sz (b[1]); |
| 2163 | |
| 2164 | ip4_mtu_check (b[0], ip0_len, |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2165 | adj0[0].rewrite_header.max_l3_packet_bytes, |
| 2166 | ip0->flags_and_fragment_offset & |
| 2167 | clib_host_to_net_u16 (IP4_HEADER_FLAG_DONT_FRAGMENT), |
Ole Troan | eb284a1 | 2019-10-09 13:33:19 +0200 | [diff] [blame] | 2168 | next + 0, is_midchain, &error0); |
Andrew Yourtchenko | 6a7cff7 | 2018-10-12 16:09:22 +0200 | [diff] [blame] | 2169 | ip4_mtu_check (b[1], ip1_len, |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2170 | adj1[0].rewrite_header.max_l3_packet_bytes, |
| 2171 | ip1->flags_and_fragment_offset & |
| 2172 | clib_host_to_net_u16 (IP4_HEADER_FLAG_DONT_FRAGMENT), |
Ole Troan | eb284a1 | 2019-10-09 13:33:19 +0200 | [diff] [blame] | 2173 | next + 1, is_midchain, &error1); |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2174 | |
| 2175 | if (is_mcast) |
| 2176 | { |
| 2177 | error0 = ((adj0[0].rewrite_header.sw_if_index == |
| 2178 | vnet_buffer (b[0])->sw_if_index[VLIB_RX]) ? |
| 2179 | IP4_ERROR_SAME_INTERFACE : error0); |
| 2180 | error1 = ((adj1[0].rewrite_header.sw_if_index == |
| 2181 | vnet_buffer (b[1])->sw_if_index[VLIB_RX]) ? |
| 2182 | IP4_ERROR_SAME_INTERFACE : error1); |
| 2183 | } |
| 2184 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2185 | /* Don't adjust the buffer for ttl issue; icmp-error node wants |
Jim Thompson | f324dec | 2019-04-08 03:22:21 -0500 | [diff] [blame] | 2186 | * to see the IP header */ |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2187 | if (PREDICT_TRUE (error0 == IP4_ERROR_NONE)) |
| 2188 | { |
| 2189 | u32 next_index = adj0[0].rewrite_header.next_index; |
Zhiyong Yang | a665921 | 2019-06-25 22:41:55 -0400 | [diff] [blame] | 2190 | vlib_buffer_advance (b[0], -(word) rw_len0); |
Neale Ranns | 0b6a857 | 2019-10-30 17:34:14 +0000 | [diff] [blame] | 2191 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2192 | tx_sw_if_index0 = adj0[0].rewrite_header.sw_if_index; |
| 2193 | vnet_buffer (b[0])->sw_if_index[VLIB_TX] = tx_sw_if_index0; |
| 2194 | |
| 2195 | if (PREDICT_FALSE |
| 2196 | (adj0[0].rewrite_header.flags & VNET_REWRITE_HAS_FEATURES)) |
Neale Ranns | 4ec36c5 | 2020-03-31 09:21:29 -0400 | [diff] [blame] | 2197 | vnet_feature_arc_start_w_cfg_index (lm->output_feature_arc_index, |
| 2198 | tx_sw_if_index0, |
| 2199 | &next_index, b[0], |
| 2200 | adj0->ia_cfg_index); |
| 2201 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2202 | next[0] = next_index; |
Neale Ranns | 0b6a857 | 2019-10-30 17:34:14 +0000 | [diff] [blame] | 2203 | if (is_midchain) |
Dave Barach | 1bd2c01 | 2020-04-12 08:31:39 -0400 | [diff] [blame] | 2204 | vnet_calc_checksums_inline (vm, b[0], 1 /* is_ip4 */ , |
Vladimir Isaev | 698eb87 | 2020-05-21 16:34:17 +0300 | [diff] [blame] | 2205 | 0 /* is_ip6 */ ); |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2206 | } |
Kingwel Xie | cb36a1d | 2019-03-20 03:45:47 -0400 | [diff] [blame] | 2207 | else |
| 2208 | { |
| 2209 | b[0]->error = error_node->errors[error0]; |
Neale Ranns | 0b6a857 | 2019-10-30 17:34:14 +0000 | [diff] [blame] | 2210 | if (error0 == IP4_ERROR_MTU_EXCEEDED) |
| 2211 | ip4_ttl_inc (b[0], ip0); |
Kingwel Xie | cb36a1d | 2019-03-20 03:45:47 -0400 | [diff] [blame] | 2212 | } |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2213 | if (PREDICT_TRUE (error1 == IP4_ERROR_NONE)) |
| 2214 | { |
| 2215 | u32 next_index = adj1[0].rewrite_header.next_index; |
Zhiyong Yang | a665921 | 2019-06-25 22:41:55 -0400 | [diff] [blame] | 2216 | vlib_buffer_advance (b[1], -(word) rw_len1); |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2217 | |
| 2218 | tx_sw_if_index1 = adj1[0].rewrite_header.sw_if_index; |
| 2219 | vnet_buffer (b[1])->sw_if_index[VLIB_TX] = tx_sw_if_index1; |
| 2220 | |
| 2221 | if (PREDICT_FALSE |
| 2222 | (adj1[0].rewrite_header.flags & VNET_REWRITE_HAS_FEATURES)) |
Neale Ranns | 4ec36c5 | 2020-03-31 09:21:29 -0400 | [diff] [blame] | 2223 | vnet_feature_arc_start_w_cfg_index (lm->output_feature_arc_index, |
| 2224 | tx_sw_if_index1, |
| 2225 | &next_index, b[1], |
| 2226 | adj1->ia_cfg_index); |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2227 | next[1] = next_index; |
Neale Ranns | 0b6a857 | 2019-10-30 17:34:14 +0000 | [diff] [blame] | 2228 | if (is_midchain) |
Neale Ranns | fc74697 | 2020-05-20 19:58:20 +0000 | [diff] [blame] | 2229 | vnet_calc_checksums_inline (vm, b[1], 1 /* is_ip4 */ , |
Vladimir Isaev | 698eb87 | 2020-05-21 16:34:17 +0300 | [diff] [blame] | 2230 | 0 /* is_ip6 */ ); |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2231 | } |
Kingwel Xie | cb36a1d | 2019-03-20 03:45:47 -0400 | [diff] [blame] | 2232 | else |
| 2233 | { |
| 2234 | b[1]->error = error_node->errors[error1]; |
Neale Ranns | 0b6a857 | 2019-10-30 17:34:14 +0000 | [diff] [blame] | 2235 | if (error1 == IP4_ERROR_MTU_EXCEEDED) |
| 2236 | ip4_ttl_inc (b[1], ip1); |
Kingwel Xie | cb36a1d | 2019-03-20 03:45:47 -0400 | [diff] [blame] | 2237 | } |
Neale Ranns | 0b6a857 | 2019-10-30 17:34:14 +0000 | [diff] [blame] | 2238 | |
Neale Ranns | 4ec36c5 | 2020-03-31 09:21:29 -0400 | [diff] [blame] | 2239 | if (is_midchain) |
| 2240 | /* Guess we are only writing on ipv4 header. */ |
| 2241 | vnet_rewrite_two_headers (adj0[0], adj1[0], |
| 2242 | ip0, ip1, sizeof (ip4_header_t)); |
| 2243 | else |
| 2244 | /* Guess we are only writing on simple Ethernet header. */ |
| 2245 | vnet_rewrite_two_headers (adj0[0], adj1[0], |
| 2246 | ip0, ip1, sizeof (ethernet_header_t)); |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2247 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2248 | if (do_counters) |
| 2249 | { |
Neale Ranns | 0b6a857 | 2019-10-30 17:34:14 +0000 | [diff] [blame] | 2250 | if (error0 == IP4_ERROR_NONE) |
| 2251 | vlib_increment_combined_counter |
| 2252 | (&adjacency_counters, |
| 2253 | thread_index, |
| 2254 | adj_index0, 1, |
| 2255 | vlib_buffer_length_in_chain (vm, b[0]) + rw_len0); |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2256 | |
Neale Ranns | 0b6a857 | 2019-10-30 17:34:14 +0000 | [diff] [blame] | 2257 | if (error1 == IP4_ERROR_NONE) |
| 2258 | vlib_increment_combined_counter |
| 2259 | (&adjacency_counters, |
| 2260 | thread_index, |
| 2261 | adj_index1, 1, |
| 2262 | vlib_buffer_length_in_chain (vm, b[1]) + rw_len1); |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2263 | } |
| 2264 | |
| 2265 | if (is_midchain) |
| 2266 | { |
Neale Ranns | 4ec36c5 | 2020-03-31 09:21:29 -0400 | [diff] [blame] | 2267 | if (error0 == IP4_ERROR_NONE) |
| 2268 | adj_midchain_fixup (vm, adj0, b[0]); |
| 2269 | if (error1 == IP4_ERROR_NONE) |
| 2270 | adj_midchain_fixup (vm, adj1, b[1]); |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2271 | } |
| 2272 | |
| 2273 | if (is_mcast) |
| 2274 | { |
Neale Ranns | 0b6a857 | 2019-10-30 17:34:14 +0000 | [diff] [blame] | 2275 | /* copy bytes from the IP address into the MAC rewrite */ |
| 2276 | if (error0 == IP4_ERROR_NONE) |
| 2277 | vnet_ip_mcast_fixup_header (IP4_MCAST_ADDR_MASK, |
| 2278 | adj0->rewrite_header.dst_mcast_offset, |
| 2279 | &ip0->dst_address.as_u32, (u8 *) ip0); |
| 2280 | if (error1 == IP4_ERROR_NONE) |
| 2281 | vnet_ip_mcast_fixup_header (IP4_MCAST_ADDR_MASK, |
| 2282 | adj1->rewrite_header.dst_mcast_offset, |
| 2283 | &ip1->dst_address.as_u32, (u8 *) ip1); |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2284 | } |
| 2285 | |
| 2286 | next += 2; |
| 2287 | b += 2; |
| 2288 | n_left_from -= 2; |
| 2289 | } |
Lijian.Zhang | 840f64b | 2019-07-09 17:54:32 +0800 | [diff] [blame] | 2290 | #elif (CLIB_N_PREFETCHES >= 4) |
| 2291 | next = nexts; |
| 2292 | b = bufs; |
| 2293 | while (n_left_from >= 1) |
| 2294 | { |
| 2295 | ip_adjacency_t *adj0; |
| 2296 | ip4_header_t *ip0; |
| 2297 | u32 rw_len0, error0, adj_index0; |
| 2298 | u32 tx_sw_if_index0; |
| 2299 | u8 *p; |
| 2300 | |
| 2301 | /* Prefetch next iteration */ |
| 2302 | if (PREDICT_TRUE (n_left_from >= 4)) |
| 2303 | { |
| 2304 | ip_adjacency_t *adj2; |
| 2305 | u32 adj_index2; |
| 2306 | |
| 2307 | vlib_prefetch_buffer_header (b[3], LOAD); |
| 2308 | vlib_prefetch_buffer_data (b[2], LOAD); |
| 2309 | |
| 2310 | /* Prefetch adj->rewrite_header */ |
| 2311 | adj_index2 = vnet_buffer (b[2])->ip.adj_index[VLIB_TX]; |
| 2312 | adj2 = adj_get (adj_index2); |
| 2313 | p = (u8 *) adj2; |
| 2314 | CLIB_PREFETCH (p + CLIB_CACHE_LINE_BYTES, CLIB_CACHE_LINE_BYTES, |
| 2315 | LOAD); |
| 2316 | } |
| 2317 | |
| 2318 | adj_index0 = vnet_buffer (b[0])->ip.adj_index[VLIB_TX]; |
| 2319 | |
| 2320 | /* |
| 2321 | * Prefetch the per-adjacency counters |
| 2322 | */ |
| 2323 | if (do_counters) |
| 2324 | { |
| 2325 | vlib_prefetch_combined_counter (&adjacency_counters, |
| 2326 | thread_index, adj_index0); |
| 2327 | } |
| 2328 | |
| 2329 | ip0 = vlib_buffer_get_current (b[0]); |
| 2330 | |
| 2331 | error0 = IP4_ERROR_NONE; |
| 2332 | |
| 2333 | ip4_ttl_and_checksum_check (b[0], ip0, next + 0, &error0); |
| 2334 | |
| 2335 | /* Rewrite packet header and updates lengths. */ |
| 2336 | adj0 = adj_get (adj_index0); |
| 2337 | |
| 2338 | /* Rewrite header was prefetched. */ |
| 2339 | rw_len0 = adj0[0].rewrite_header.data_bytes; |
| 2340 | vnet_buffer (b[0])->ip.save_rewrite_length = rw_len0; |
| 2341 | |
| 2342 | /* Check MTU of outgoing interface. */ |
| 2343 | u16 ip0_len = clib_net_to_host_u16 (ip0->length); |
| 2344 | |
Mohsin Kazmi | 3f5594d | 2019-12-03 18:56:26 +0100 | [diff] [blame] | 2345 | if (b[0]->flags & VNET_BUFFER_F_GSO) |
Lijian.Zhang | 840f64b | 2019-07-09 17:54:32 +0800 | [diff] [blame] | 2346 | ip0_len = gso_mtu_sz (b[0]); |
| 2347 | |
| 2348 | ip4_mtu_check (b[0], ip0_len, |
| 2349 | adj0[0].rewrite_header.max_l3_packet_bytes, |
| 2350 | ip0->flags_and_fragment_offset & |
| 2351 | clib_host_to_net_u16 (IP4_HEADER_FLAG_DONT_FRAGMENT), |
Ole Troan | eb284a1 | 2019-10-09 13:33:19 +0200 | [diff] [blame] | 2352 | next + 0, is_midchain, &error0); |
Lijian.Zhang | 840f64b | 2019-07-09 17:54:32 +0800 | [diff] [blame] | 2353 | |
| 2354 | if (is_mcast) |
| 2355 | { |
| 2356 | error0 = ((adj0[0].rewrite_header.sw_if_index == |
| 2357 | vnet_buffer (b[0])->sw_if_index[VLIB_RX]) ? |
| 2358 | IP4_ERROR_SAME_INTERFACE : error0); |
| 2359 | } |
| 2360 | |
| 2361 | /* Don't adjust the buffer for ttl issue; icmp-error node wants |
| 2362 | * to see the IP header */ |
| 2363 | if (PREDICT_TRUE (error0 == IP4_ERROR_NONE)) |
| 2364 | { |
| 2365 | u32 next_index = adj0[0].rewrite_header.next_index; |
| 2366 | vlib_buffer_advance (b[0], -(word) rw_len0); |
| 2367 | tx_sw_if_index0 = adj0[0].rewrite_header.sw_if_index; |
| 2368 | vnet_buffer (b[0])->sw_if_index[VLIB_TX] = tx_sw_if_index0; |
| 2369 | |
| 2370 | if (PREDICT_FALSE |
| 2371 | (adj0[0].rewrite_header.flags & VNET_REWRITE_HAS_FEATURES)) |
Neale Ranns | 4ec36c5 | 2020-03-31 09:21:29 -0400 | [diff] [blame] | 2372 | vnet_feature_arc_start_w_cfg_index (lm->output_feature_arc_index, |
| 2373 | tx_sw_if_index0, |
| 2374 | &next_index, b[0], |
| 2375 | adj0->ia_cfg_index); |
Lijian.Zhang | 840f64b | 2019-07-09 17:54:32 +0800 | [diff] [blame] | 2376 | next[0] = next_index; |
Neale Ranns | 0b6a857 | 2019-10-30 17:34:14 +0000 | [diff] [blame] | 2377 | |
| 2378 | if (is_midchain) |
Neale Ranns | 4ec36c5 | 2020-03-31 09:21:29 -0400 | [diff] [blame] | 2379 | { |
| 2380 | vnet_calc_checksums_inline (vm, b[0], 1 /* is_ip4 */ , |
Vladimir Isaev | 698eb87 | 2020-05-21 16:34:17 +0300 | [diff] [blame] | 2381 | 0 /* is_ip6 */ ); |
Neale Ranns | 0b6a857 | 2019-10-30 17:34:14 +0000 | [diff] [blame] | 2382 | |
Neale Ranns | 4ec36c5 | 2020-03-31 09:21:29 -0400 | [diff] [blame] | 2383 | /* Guess we are only writing on ipv4 header. */ |
| 2384 | vnet_rewrite_one_header (adj0[0], ip0, sizeof (ip4_header_t)); |
| 2385 | } |
| 2386 | else |
| 2387 | /* Guess we are only writing on simple Ethernet header. */ |
| 2388 | vnet_rewrite_one_header (adj0[0], ip0, |
| 2389 | sizeof (ethernet_header_t)); |
Neale Ranns | 0b6a857 | 2019-10-30 17:34:14 +0000 | [diff] [blame] | 2390 | |
| 2391 | /* |
| 2392 | * Bump the per-adjacency counters |
| 2393 | */ |
| 2394 | if (do_counters) |
| 2395 | vlib_increment_combined_counter |
| 2396 | (&adjacency_counters, |
| 2397 | thread_index, |
| 2398 | adj_index0, 1, vlib_buffer_length_in_chain (vm, |
| 2399 | b[0]) + rw_len0); |
| 2400 | |
Neale Ranns | 4ec36c5 | 2020-03-31 09:21:29 -0400 | [diff] [blame] | 2401 | if (is_midchain) |
| 2402 | adj_midchain_fixup (vm, adj0, b[0]); |
Neale Ranns | 0b6a857 | 2019-10-30 17:34:14 +0000 | [diff] [blame] | 2403 | |
| 2404 | if (is_mcast) |
| 2405 | /* copy bytes from the IP address into the MAC rewrite */ |
| 2406 | vnet_ip_mcast_fixup_header (IP4_MCAST_ADDR_MASK, |
| 2407 | adj0->rewrite_header.dst_mcast_offset, |
| 2408 | &ip0->dst_address.as_u32, (u8 *) ip0); |
Lijian.Zhang | 840f64b | 2019-07-09 17:54:32 +0800 | [diff] [blame] | 2409 | } |
| 2410 | else |
| 2411 | { |
| 2412 | b[0]->error = error_node->errors[error0]; |
Neale Ranns | 0b6a857 | 2019-10-30 17:34:14 +0000 | [diff] [blame] | 2413 | if (error0 == IP4_ERROR_MTU_EXCEEDED) |
| 2414 | ip4_ttl_inc (b[0], ip0); |
Lijian.Zhang | 840f64b | 2019-07-09 17:54:32 +0800 | [diff] [blame] | 2415 | } |
| 2416 | |
| 2417 | next += 1; |
| 2418 | b += 1; |
| 2419 | n_left_from -= 1; |
| 2420 | } |
| 2421 | #endif |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2422 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2423 | while (n_left_from > 0) |
| 2424 | { |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2425 | ip_adjacency_t *adj0; |
| 2426 | ip4_header_t *ip0; |
| 2427 | u32 rw_len0, adj_index0, error0; |
| 2428 | u32 tx_sw_if_index0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2429 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2430 | adj_index0 = vnet_buffer (b[0])->ip.adj_index[VLIB_TX]; |
| 2431 | |
| 2432 | adj0 = adj_get (adj_index0); |
| 2433 | |
| 2434 | if (do_counters) |
| 2435 | vlib_prefetch_combined_counter (&adjacency_counters, |
| 2436 | thread_index, adj_index0); |
| 2437 | |
| 2438 | ip0 = vlib_buffer_get_current (b[0]); |
| 2439 | |
| 2440 | error0 = IP4_ERROR_NONE; |
| 2441 | |
| 2442 | ip4_ttl_and_checksum_check (b[0], ip0, next + 0, &error0); |
| 2443 | |
| 2444 | |
| 2445 | /* Update packet buffer attributes/set output interface. */ |
| 2446 | rw_len0 = adj0[0].rewrite_header.data_bytes; |
| 2447 | vnet_buffer (b[0])->ip.save_rewrite_length = rw_len0; |
| 2448 | |
| 2449 | /* Check MTU of outgoing interface. */ |
Andrew Yourtchenko | 6a7cff7 | 2018-10-12 16:09:22 +0200 | [diff] [blame] | 2450 | u16 ip0_len = clib_net_to_host_u16 (ip0->length); |
Mohsin Kazmi | 3f5594d | 2019-12-03 18:56:26 +0100 | [diff] [blame] | 2451 | if (b[0]->flags & VNET_BUFFER_F_GSO) |
Andrew Yourtchenko | 6a7cff7 | 2018-10-12 16:09:22 +0200 | [diff] [blame] | 2452 | ip0_len = gso_mtu_sz (b[0]); |
| 2453 | |
| 2454 | ip4_mtu_check (b[0], ip0_len, |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2455 | adj0[0].rewrite_header.max_l3_packet_bytes, |
| 2456 | ip0->flags_and_fragment_offset & |
| 2457 | clib_host_to_net_u16 (IP4_HEADER_FLAG_DONT_FRAGMENT), |
Ole Troan | eb284a1 | 2019-10-09 13:33:19 +0200 | [diff] [blame] | 2458 | next + 0, is_midchain, &error0); |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2459 | |
| 2460 | if (is_mcast) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2461 | { |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2462 | error0 = ((adj0[0].rewrite_header.sw_if_index == |
| 2463 | vnet_buffer (b[0])->sw_if_index[VLIB_RX]) ? |
| 2464 | IP4_ERROR_SAME_INTERFACE : error0); |
| 2465 | } |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2466 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2467 | /* Don't adjust the buffer for ttl issue; icmp-error node wants |
Jim Thompson | f324dec | 2019-04-08 03:22:21 -0500 | [diff] [blame] | 2468 | * to see the IP header */ |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2469 | if (PREDICT_TRUE (error0 == IP4_ERROR_NONE)) |
| 2470 | { |
| 2471 | u32 next_index = adj0[0].rewrite_header.next_index; |
Zhiyong Yang | a665921 | 2019-06-25 22:41:55 -0400 | [diff] [blame] | 2472 | vlib_buffer_advance (b[0], -(word) rw_len0); |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2473 | tx_sw_if_index0 = adj0[0].rewrite_header.sw_if_index; |
| 2474 | vnet_buffer (b[0])->sw_if_index[VLIB_TX] = tx_sw_if_index0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2475 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2476 | if (PREDICT_FALSE |
| 2477 | (adj0[0].rewrite_header.flags & VNET_REWRITE_HAS_FEATURES)) |
Neale Ranns | 4ec36c5 | 2020-03-31 09:21:29 -0400 | [diff] [blame] | 2478 | vnet_feature_arc_start_w_cfg_index (lm->output_feature_arc_index, |
| 2479 | tx_sw_if_index0, |
| 2480 | &next_index, b[0], |
| 2481 | adj0->ia_cfg_index); |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2482 | next[0] = next_index; |
Neale Ranns | 0b6a857 | 2019-10-30 17:34:14 +0000 | [diff] [blame] | 2483 | |
| 2484 | if (is_midchain) |
Neale Ranns | 4ec36c5 | 2020-03-31 09:21:29 -0400 | [diff] [blame] | 2485 | { |
| 2486 | /* this acts on the packet that is about to be encapped */ |
| 2487 | vnet_calc_checksums_inline (vm, b[0], 1 /* is_ip4 */ , |
Vladimir Isaev | 698eb87 | 2020-05-21 16:34:17 +0300 | [diff] [blame] | 2488 | 0 /* is_ip6 */ ); |
Neale Ranns | 0b6a857 | 2019-10-30 17:34:14 +0000 | [diff] [blame] | 2489 | |
Neale Ranns | 4ec36c5 | 2020-03-31 09:21:29 -0400 | [diff] [blame] | 2490 | /* Guess we are only writing on ipv4 header. */ |
| 2491 | vnet_rewrite_one_header (adj0[0], ip0, sizeof (ip4_header_t)); |
| 2492 | } |
| 2493 | else |
| 2494 | /* Guess we are only writing on simple Ethernet header. */ |
| 2495 | vnet_rewrite_one_header (adj0[0], ip0, |
| 2496 | sizeof (ethernet_header_t)); |
Neale Ranns | 0b6a857 | 2019-10-30 17:34:14 +0000 | [diff] [blame] | 2497 | |
| 2498 | if (do_counters) |
| 2499 | vlib_increment_combined_counter |
| 2500 | (&adjacency_counters, |
| 2501 | thread_index, adj_index0, 1, |
| 2502 | vlib_buffer_length_in_chain (vm, b[0]) + rw_len0); |
| 2503 | |
Neale Ranns | e2fe097 | 2020-11-26 08:37:27 +0000 | [diff] [blame^] | 2504 | if (is_midchain) |
| 2505 | adj_midchain_fixup (vm, adj0, b[0]); |
Neale Ranns | 0b6a857 | 2019-10-30 17:34:14 +0000 | [diff] [blame] | 2506 | |
| 2507 | if (is_mcast) |
| 2508 | /* copy bytes from the IP address into the MAC rewrite */ |
| 2509 | vnet_ip_mcast_fixup_header (IP4_MCAST_ADDR_MASK, |
| 2510 | adj0->rewrite_header.dst_mcast_offset, |
| 2511 | &ip0->dst_address.as_u32, (u8 *) ip0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2512 | } |
Kingwel Xie | cb36a1d | 2019-03-20 03:45:47 -0400 | [diff] [blame] | 2513 | else |
| 2514 | { |
| 2515 | b[0]->error = error_node->errors[error0]; |
Neale Ranns | 0b6a857 | 2019-10-30 17:34:14 +0000 | [diff] [blame] | 2516 | /* undo the TTL decrement - we'll be back to do it again */ |
| 2517 | if (error0 == IP4_ERROR_MTU_EXCEEDED) |
| 2518 | ip4_ttl_inc (b[0], ip0); |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2519 | } |
| 2520 | |
| 2521 | next += 1; |
| 2522 | b += 1; |
| 2523 | n_left_from -= 1; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2524 | } |
| 2525 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2526 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2527 | /* Need to do trace after rewrites to pick up new packet data. */ |
| 2528 | if (node->flags & VLIB_NODE_FLAG_TRACE) |
Neale Ranns | f06aea5 | 2016-11-29 06:51:37 -0800 | [diff] [blame] | 2529 | ip4_forward_next_trace (vm, node, frame, VLIB_TX); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2530 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2531 | vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2532 | return frame->n_vectors; |
| 2533 | } |
| 2534 | |
Andrew Yourtchenko | 6a7cff7 | 2018-10-12 16:09:22 +0200 | [diff] [blame] | 2535 | always_inline uword |
| 2536 | ip4_rewrite_inline (vlib_main_t * vm, |
| 2537 | vlib_node_runtime_t * node, |
| 2538 | vlib_frame_t * frame, |
| 2539 | int do_counters, int is_midchain, int is_mcast) |
| 2540 | { |
Mohsin Kazmi | 3f5594d | 2019-12-03 18:56:26 +0100 | [diff] [blame] | 2541 | return ip4_rewrite_inline_with_gso (vm, node, frame, do_counters, |
| 2542 | is_midchain, is_mcast); |
Andrew Yourtchenko | 6a7cff7 | 2018-10-12 16:09:22 +0200 | [diff] [blame] | 2543 | } |
| 2544 | |
Dave Barach | 132d51d | 2016-07-07 10:10:17 -0400 | [diff] [blame] | 2545 | |
Neale Ranns | f06aea5 | 2016-11-29 06:51:37 -0800 | [diff] [blame] | 2546 | /** @brief IPv4 rewrite node. |
| 2547 | @node ip4-rewrite |
Dave Barach | 132d51d | 2016-07-07 10:10:17 -0400 | [diff] [blame] | 2548 | |
| 2549 | This is the IPv4 transit-rewrite node: decrement TTL, fix the ipv4 |
| 2550 | header checksum, fetch the ip adjacency, check the outbound mtu, |
| 2551 | apply the adjacency rewrite, and send pkts to the adjacency |
| 2552 | rewrite header's rewrite_next_index. |
| 2553 | |
| 2554 | @param vm vlib_main_t corresponding to the current thread |
| 2555 | @param node vlib_node_runtime_t |
| 2556 | @param frame vlib_frame_t whose contents should be dispatched |
| 2557 | |
| 2558 | @par Graph mechanics: buffer metadata, next index usage |
| 2559 | |
| 2560 | @em Uses: |
| 2561 | - <code>vnet_buffer(b)->ip.adj_index[VLIB_TX]</code> |
| 2562 | - the rewrite adjacency index |
| 2563 | - <code>adj->lookup_next_index</code> |
| 2564 | - Must be IP_LOOKUP_NEXT_REWRITE or IP_LOOKUP_NEXT_ARP, otherwise |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2565 | the packet will be dropped. |
Dave Barach | 132d51d | 2016-07-07 10:10:17 -0400 | [diff] [blame] | 2566 | - <code>adj->rewrite_header</code> |
| 2567 | - Rewrite string length, rewrite string, next_index |
| 2568 | |
| 2569 | @em Sets: |
| 2570 | - <code>b->current_data, b->current_length</code> |
| 2571 | - Updated net of applying the rewrite string |
| 2572 | |
| 2573 | <em>Next Indices:</em> |
| 2574 | - <code> adj->rewrite_header.next_index </code> |
Vijayabhaskar Katamreddy | ce07412 | 2017-11-15 13:50:26 -0800 | [diff] [blame] | 2575 | or @c ip4-drop |
Dave Barach | 132d51d | 2016-07-07 10:10:17 -0400 | [diff] [blame] | 2576 | */ |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2577 | |
| 2578 | VLIB_NODE_FN (ip4_rewrite_node) (vlib_main_t * vm, vlib_node_runtime_t * node, |
| 2579 | vlib_frame_t * frame) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2580 | { |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 2581 | if (adj_are_counters_enabled ()) |
| 2582 | return ip4_rewrite_inline (vm, node, frame, 1, 0, 0); |
| 2583 | else |
| 2584 | return ip4_rewrite_inline (vm, node, frame, 0, 0, 0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2585 | } |
| 2586 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2587 | VLIB_NODE_FN (ip4_rewrite_bcast_node) (vlib_main_t * vm, |
| 2588 | vlib_node_runtime_t * node, |
| 2589 | vlib_frame_t * frame) |
Neale Ranns | 1855b8e | 2018-07-11 10:31:26 -0700 | [diff] [blame] | 2590 | { |
| 2591 | if (adj_are_counters_enabled ()) |
| 2592 | return ip4_rewrite_inline (vm, node, frame, 1, 0, 0); |
| 2593 | else |
| 2594 | return ip4_rewrite_inline (vm, node, frame, 0, 0, 0); |
| 2595 | } |
| 2596 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2597 | VLIB_NODE_FN (ip4_midchain_node) (vlib_main_t * vm, |
| 2598 | vlib_node_runtime_t * node, |
| 2599 | vlib_frame_t * frame) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2600 | { |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 2601 | if (adj_are_counters_enabled ()) |
| 2602 | return ip4_rewrite_inline (vm, node, frame, 1, 1, 0); |
| 2603 | else |
| 2604 | return ip4_rewrite_inline (vm, node, frame, 0, 1, 0); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2605 | } |
| 2606 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2607 | VLIB_NODE_FN (ip4_rewrite_mcast_node) (vlib_main_t * vm, |
| 2608 | vlib_node_runtime_t * node, |
| 2609 | vlib_frame_t * frame) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2610 | { |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 2611 | if (adj_are_counters_enabled ()) |
| 2612 | return ip4_rewrite_inline (vm, node, frame, 1, 0, 1); |
| 2613 | else |
| 2614 | return ip4_rewrite_inline (vm, node, frame, 0, 0, 1); |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2615 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2616 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2617 | VLIB_NODE_FN (ip4_mcast_midchain_node) (vlib_main_t * vm, |
| 2618 | vlib_node_runtime_t * node, |
| 2619 | vlib_frame_t * frame) |
Neale Ranns | 0f26c5a | 2017-03-01 15:12:11 -0800 | [diff] [blame] | 2620 | { |
| 2621 | if (adj_are_counters_enabled ()) |
| 2622 | return ip4_rewrite_inline (vm, node, frame, 1, 1, 1); |
| 2623 | else |
| 2624 | return ip4_rewrite_inline (vm, node, frame, 0, 1, 1); |
| 2625 | } |
| 2626 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2627 | /* *INDENT-OFF* */ |
| 2628 | VLIB_REGISTER_NODE (ip4_rewrite_node) = { |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2629 | .name = "ip4-rewrite", |
| 2630 | .vector_size = sizeof (u32), |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2631 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2632 | .format_trace = format_ip4_rewrite_trace, |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2633 | |
Ole Troan | 313f7e2 | 2018-04-10 16:02:51 +0200 | [diff] [blame] | 2634 | .n_next_nodes = IP4_REWRITE_N_NEXT, |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2635 | .next_nodes = { |
Vijayabhaskar Katamreddy | ce07412 | 2017-11-15 13:50:26 -0800 | [diff] [blame] | 2636 | [IP4_REWRITE_NEXT_DROP] = "ip4-drop", |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2637 | [IP4_REWRITE_NEXT_ICMP_ERROR] = "ip4-icmp-error", |
Ole Troan | 313f7e2 | 2018-04-10 16:02:51 +0200 | [diff] [blame] | 2638 | [IP4_REWRITE_NEXT_FRAGMENT] = "ip4-frag", |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2639 | }, |
| 2640 | }; |
Neale Ranns | 1855b8e | 2018-07-11 10:31:26 -0700 | [diff] [blame] | 2641 | |
| 2642 | VLIB_REGISTER_NODE (ip4_rewrite_bcast_node) = { |
Neale Ranns | 1855b8e | 2018-07-11 10:31:26 -0700 | [diff] [blame] | 2643 | .name = "ip4-rewrite-bcast", |
| 2644 | .vector_size = sizeof (u32), |
| 2645 | |
| 2646 | .format_trace = format_ip4_rewrite_trace, |
| 2647 | .sibling_of = "ip4-rewrite", |
| 2648 | }; |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2649 | |
| 2650 | VLIB_REGISTER_NODE (ip4_rewrite_mcast_node) = { |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2651 | .name = "ip4-rewrite-mcast", |
| 2652 | .vector_size = sizeof (u32), |
| 2653 | |
| 2654 | .format_trace = format_ip4_rewrite_trace, |
| 2655 | .sibling_of = "ip4-rewrite", |
| 2656 | }; |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2657 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2658 | VLIB_REGISTER_NODE (ip4_mcast_midchain_node) = { |
Neale Ranns | 0f26c5a | 2017-03-01 15:12:11 -0800 | [diff] [blame] | 2659 | .name = "ip4-mcast-midchain", |
| 2660 | .vector_size = sizeof (u32), |
| 2661 | |
| 2662 | .format_trace = format_ip4_rewrite_trace, |
| 2663 | .sibling_of = "ip4-rewrite", |
| 2664 | }; |
Neale Ranns | 0f26c5a | 2017-03-01 15:12:11 -0800 | [diff] [blame] | 2665 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2666 | VLIB_REGISTER_NODE (ip4_midchain_node) = { |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2667 | .name = "ip4-midchain", |
| 2668 | .vector_size = sizeof (u32), |
Neale Ranns | 0b6a857 | 2019-10-30 17:34:14 +0000 | [diff] [blame] | 2669 | .format_trace = format_ip4_rewrite_trace, |
| 2670 | .sibling_of = "ip4-rewrite", |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2671 | }; |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2672 | /* *INDENT-ON */ |
Damjan Marion | 1c80e83 | 2016-05-11 23:07:18 +0200 | [diff] [blame] | 2673 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2674 | static int |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2675 | ip4_lookup_validate (ip4_address_t * a, u32 fib_index0) |
| 2676 | { |
| 2677 | ip4_fib_mtrie_t *mtrie0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2678 | ip4_fib_mtrie_leaf_t leaf0; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2679 | u32 lbi0; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2680 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2681 | mtrie0 = &ip4_fib_get (fib_index0)->mtrie; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2682 | |
Neale Ranns | 04a75e3 | 2017-03-23 06:46:01 -0700 | [diff] [blame] | 2683 | leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, a); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2684 | leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, a, 2); |
| 2685 | leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, a, 3); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2686 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2687 | lbi0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2688 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2689 | 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] | 2690 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2691 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2692 | static clib_error_t * |
| 2693 | test_lookup_command_fn (vlib_main_t * vm, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2694 | unformat_input_t * input, vlib_cli_command_t * cmd) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2695 | { |
Billy McFall | 309fe06 | 2016-10-14 07:37:33 -0400 | [diff] [blame] | 2696 | ip4_fib_t *fib; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2697 | u32 table_id = 0; |
| 2698 | f64 count = 1; |
| 2699 | u32 n; |
| 2700 | int i; |
| 2701 | ip4_address_t ip4_base_address; |
| 2702 | u64 errors = 0; |
| 2703 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2704 | while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| 2705 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2706 | if (unformat (input, "table %d", &table_id)) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2707 | { |
| 2708 | /* Make sure the entry exists. */ |
| 2709 | fib = ip4_fib_get (table_id); |
| 2710 | if ((fib) && (fib->index != table_id)) |
| 2711 | return clib_error_return (0, "<fib-index> %d does not exist", |
| 2712 | table_id); |
| 2713 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2714 | else if (unformat (input, "count %f", &count)) |
| 2715 | ; |
| 2716 | |
| 2717 | else if (unformat (input, "%U", |
| 2718 | unformat_ip4_address, &ip4_base_address)) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2719 | ; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2720 | else |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2721 | return clib_error_return (0, "unknown input `%U'", |
| 2722 | format_unformat_error, input); |
| 2723 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2724 | |
| 2725 | n = count; |
| 2726 | |
| 2727 | for (i = 0; i < n; i++) |
| 2728 | { |
| 2729 | if (!ip4_lookup_validate (&ip4_base_address, table_id)) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2730 | errors++; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2731 | |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2732 | ip4_base_address.as_u32 = |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2733 | clib_host_to_net_u32 (1 + |
| 2734 | clib_net_to_host_u32 (ip4_base_address.as_u32)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2735 | } |
| 2736 | |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2737 | if (errors) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2738 | vlib_cli_output (vm, "%llu errors out of %d lookups\n", errors, n); |
| 2739 | else |
| 2740 | vlib_cli_output (vm, "No errors in %d lookups\n", n); |
| 2741 | |
| 2742 | return 0; |
| 2743 | } |
| 2744 | |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 2745 | /*? |
| 2746 | * Perform a lookup of an IPv4 Address (or range of addresses) in the |
| 2747 | * given FIB table to determine if there is a conflict with the |
| 2748 | * adjacency table. The fib-id can be determined by using the |
| 2749 | * '<em>show ip fib</em>' command. If fib-id is not entered, default value |
| 2750 | * of 0 is used. |
| 2751 | * |
| 2752 | * @todo This command uses fib-id, other commands use table-id (not |
| 2753 | * just a name, they are different indexes). Would like to change this |
| 2754 | * to table-id for consistency. |
| 2755 | * |
| 2756 | * @cliexpar |
| 2757 | * Example of how to run the test lookup command: |
| 2758 | * @cliexstart{test lookup 172.16.1.1 table 1 count 2} |
| 2759 | * No errors in 2 lookups |
| 2760 | * @cliexend |
| 2761 | ?*/ |
| 2762 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2763 | VLIB_CLI_COMMAND (lookup_test_command, static) = |
| 2764 | { |
| 2765 | .path = "test lookup", |
| 2766 | .short_help = "test lookup <ipv4-addr> [table <fib-id>] [count <nn>]", |
| 2767 | .function = test_lookup_command_fn, |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2768 | }; |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 2769 | /* *INDENT-ON* */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2770 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2771 | #ifndef CLIB_MARCH_VARIANT |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2772 | int |
| 2773 | vnet_set_ip4_flow_hash (u32 table_id, u32 flow_hash_config) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2774 | { |
Neale Ranns | 107e7d4 | 2017-04-11 09:55:19 -0700 | [diff] [blame] | 2775 | u32 fib_index; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2776 | |
Neale Ranns | 107e7d4 | 2017-04-11 09:55:19 -0700 | [diff] [blame] | 2777 | fib_index = fib_table_find (FIB_PROTOCOL_IP4, table_id); |
| 2778 | |
| 2779 | if (~0 == fib_index) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2780 | return VNET_API_ERROR_NO_SUCH_FIB; |
| 2781 | |
Neale Ranns | 227038a | 2017-04-21 01:07:59 -0700 | [diff] [blame] | 2782 | fib_table_set_flow_hash_config (fib_index, FIB_PROTOCOL_IP4, |
| 2783 | flow_hash_config); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2784 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2785 | return 0; |
| 2786 | } |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2787 | #endif |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2788 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2789 | static clib_error_t * |
| 2790 | set_ip_flow_hash_command_fn (vlib_main_t * vm, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2791 | unformat_input_t * input, |
| 2792 | vlib_cli_command_t * cmd) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2793 | { |
| 2794 | int matched = 0; |
| 2795 | u32 table_id = 0; |
| 2796 | u32 flow_hash_config = 0; |
| 2797 | int rv; |
| 2798 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2799 | while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| 2800 | { |
| 2801 | if (unformat (input, "table %d", &table_id)) |
| 2802 | matched = 1; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2803 | #define _(a,v) \ |
| 2804 | else if (unformat (input, #a)) { flow_hash_config |= v; matched=1;} |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2805 | foreach_flow_hash_bit |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2806 | #undef _ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2807 | else |
| 2808 | break; |
| 2809 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2810 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2811 | if (matched == 0) |
| 2812 | return clib_error_return (0, "unknown input `%U'", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2813 | format_unformat_error, input); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2814 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2815 | rv = vnet_set_ip4_flow_hash (table_id, flow_hash_config); |
| 2816 | switch (rv) |
| 2817 | { |
| 2818 | case 0: |
| 2819 | break; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2820 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2821 | case VNET_API_ERROR_NO_SUCH_FIB: |
| 2822 | return clib_error_return (0, "no such FIB table %d", table_id); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2823 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2824 | default: |
| 2825 | clib_warning ("BUG: illegal flow hash config 0x%x", flow_hash_config); |
| 2826 | break; |
| 2827 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2828 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2829 | return 0; |
| 2830 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2831 | |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 2832 | /*? |
| 2833 | * Configure the set of IPv4 fields used by the flow hash. |
| 2834 | * |
| 2835 | * @cliexpar |
| 2836 | * Example of how to set the flow hash on a given table: |
| 2837 | * @cliexcmd{set ip flow-hash table 7 dst sport dport proto} |
| 2838 | * Example of display the configured flow hash: |
| 2839 | * @cliexstart{show ip fib} |
Billy McFall | ebb9a6a | 2016-10-17 11:35:32 -0400 | [diff] [blame] | 2840 | * ipv4-VRF:0, fib_index 0, flow hash: src dst sport dport proto |
| 2841 | * 0.0.0.0/0 |
| 2842 | * unicast-ip4-chain |
| 2843 | * [@0]: dpo-load-balance: [index:0 buckets:1 uRPF:0 to:[0:0]] |
| 2844 | * [0] [@0]: dpo-drop ip6 |
| 2845 | * 0.0.0.0/32 |
| 2846 | * unicast-ip4-chain |
| 2847 | * [@0]: dpo-load-balance: [index:1 buckets:1 uRPF:1 to:[0:0]] |
| 2848 | * [0] [@0]: dpo-drop ip6 |
| 2849 | * 224.0.0.0/8 |
| 2850 | * unicast-ip4-chain |
| 2851 | * [@0]: dpo-load-balance: [index:3 buckets:1 uRPF:3 to:[0:0]] |
| 2852 | * [0] [@0]: dpo-drop ip6 |
| 2853 | * 6.0.1.2/32 |
| 2854 | * unicast-ip4-chain |
| 2855 | * [@0]: dpo-load-balance: [index:30 buckets:1 uRPF:29 to:[0:0]] |
| 2856 | * [0] [@3]: arp-ipv4: via 6.0.0.1 af_packet0 |
| 2857 | * 7.0.0.1/32 |
| 2858 | * unicast-ip4-chain |
| 2859 | * [@0]: dpo-load-balance: [index:31 buckets:4 uRPF:30 to:[0:0]] |
| 2860 | * [0] [@3]: arp-ipv4: via 6.0.0.2 af_packet0 |
| 2861 | * [1] [@3]: arp-ipv4: via 6.0.0.2 af_packet0 |
| 2862 | * [2] [@3]: arp-ipv4: via 6.0.0.2 af_packet0 |
| 2863 | * [3] [@3]: arp-ipv4: via 6.0.0.1 af_packet0 |
| 2864 | * 240.0.0.0/8 |
| 2865 | * unicast-ip4-chain |
| 2866 | * [@0]: dpo-load-balance: [index:2 buckets:1 uRPF:2 to:[0:0]] |
| 2867 | * [0] [@0]: dpo-drop ip6 |
| 2868 | * 255.255.255.255/32 |
| 2869 | * unicast-ip4-chain |
| 2870 | * [@0]: dpo-load-balance: [index:4 buckets:1 uRPF:4 to:[0:0]] |
| 2871 | * [0] [@0]: dpo-drop ip6 |
| 2872 | * ipv4-VRF:7, fib_index 1, flow hash: dst sport dport proto |
| 2873 | * 0.0.0.0/0 |
| 2874 | * unicast-ip4-chain |
| 2875 | * [@0]: dpo-load-balance: [index:12 buckets:1 uRPF:11 to:[0:0]] |
| 2876 | * [0] [@0]: dpo-drop ip6 |
| 2877 | * 0.0.0.0/32 |
| 2878 | * unicast-ip4-chain |
| 2879 | * [@0]: dpo-load-balance: [index:13 buckets:1 uRPF:12 to:[0:0]] |
| 2880 | * [0] [@0]: dpo-drop ip6 |
| 2881 | * 172.16.1.0/24 |
| 2882 | * unicast-ip4-chain |
| 2883 | * [@0]: dpo-load-balance: [index:17 buckets:1 uRPF:16 to:[0:0]] |
| 2884 | * [0] [@4]: ipv4-glean: af_packet0 |
| 2885 | * 172.16.1.1/32 |
| 2886 | * unicast-ip4-chain |
| 2887 | * [@0]: dpo-load-balance: [index:18 buckets:1 uRPF:17 to:[1:84]] |
| 2888 | * [0] [@2]: dpo-receive: 172.16.1.1 on af_packet0 |
| 2889 | * 172.16.1.2/32 |
| 2890 | * unicast-ip4-chain |
| 2891 | * [@0]: dpo-load-balance: [index:21 buckets:1 uRPF:20 to:[0:0]] |
| 2892 | * [0] [@5]: ipv4 via 172.16.1.2 af_packet0: IP4: 02:fe:9e:70:7a:2b -> 26:a5:f6:9c:3a:36 |
| 2893 | * 172.16.2.0/24 |
| 2894 | * unicast-ip4-chain |
| 2895 | * [@0]: dpo-load-balance: [index:19 buckets:1 uRPF:18 to:[0:0]] |
| 2896 | * [0] [@4]: ipv4-glean: af_packet1 |
| 2897 | * 172.16.2.1/32 |
| 2898 | * unicast-ip4-chain |
| 2899 | * [@0]: dpo-load-balance: [index:20 buckets:1 uRPF:19 to:[0:0]] |
| 2900 | * [0] [@2]: dpo-receive: 172.16.2.1 on af_packet1 |
| 2901 | * 224.0.0.0/8 |
| 2902 | * unicast-ip4-chain |
| 2903 | * [@0]: dpo-load-balance: [index:15 buckets:1 uRPF:14 to:[0:0]] |
| 2904 | * [0] [@0]: dpo-drop ip6 |
| 2905 | * 240.0.0.0/8 |
| 2906 | * unicast-ip4-chain |
| 2907 | * [@0]: dpo-load-balance: [index:14 buckets:1 uRPF:13 to:[0:0]] |
| 2908 | * [0] [@0]: dpo-drop ip6 |
| 2909 | * 255.255.255.255/32 |
| 2910 | * unicast-ip4-chain |
| 2911 | * [@0]: dpo-load-balance: [index:16 buckets:1 uRPF:15 to:[0:0]] |
| 2912 | * [0] [@0]: dpo-drop ip6 |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 2913 | * @cliexend |
| 2914 | ?*/ |
| 2915 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2916 | VLIB_CLI_COMMAND (set_ip_flow_hash_command, static) = |
| 2917 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2918 | .path = "set ip flow-hash", |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2919 | .short_help = |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 2920 | "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] | 2921 | .function = set_ip_flow_hash_command_fn, |
| 2922 | }; |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 2923 | /* *INDENT-ON* */ |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2924 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2925 | #ifndef CLIB_MARCH_VARIANT |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2926 | int |
| 2927 | vnet_set_ip4_classify_intfc (vlib_main_t * vm, u32 sw_if_index, |
| 2928 | u32 table_index) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2929 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2930 | vnet_main_t *vnm = vnet_get_main (); |
| 2931 | vnet_interface_main_t *im = &vnm->interface_main; |
| 2932 | ip4_main_t *ipm = &ip4_main; |
| 2933 | ip_lookup_main_t *lm = &ipm->lookup_main; |
| 2934 | vnet_classify_main_t *cm = &vnet_classify_main; |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 2935 | ip4_address_t *if_addr; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2936 | |
| 2937 | if (pool_is_free_index (im->sw_interfaces, sw_if_index)) |
| 2938 | return VNET_API_ERROR_NO_MATCHING_INTERFACE; |
| 2939 | |
| 2940 | if (table_index != ~0 && pool_is_free_index (cm->tables, table_index)) |
| 2941 | return VNET_API_ERROR_NO_SUCH_ENTRY; |
| 2942 | |
| 2943 | 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] | 2944 | 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] | 2945 | |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 2946 | if_addr = ip4_interface_first_address (ipm, sw_if_index, NULL); |
| 2947 | |
| 2948 | if (NULL != if_addr) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2949 | { |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 2950 | fib_prefix_t pfx = { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2951 | .fp_len = 32, |
| 2952 | .fp_proto = FIB_PROTOCOL_IP4, |
| 2953 | .fp_addr.ip4 = *if_addr, |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 2954 | }; |
| 2955 | u32 fib_index; |
| 2956 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2957 | fib_index = fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, |
| 2958 | sw_if_index); |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 2959 | |
| 2960 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2961 | if (table_index != (u32) ~ 0) |
| 2962 | { |
| 2963 | dpo_id_t dpo = DPO_INVALID; |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 2964 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2965 | dpo_set (&dpo, |
| 2966 | DPO_CLASSIFY, |
| 2967 | DPO_PROTO_IP4, |
| 2968 | classify_dpo_create (DPO_PROTO_IP4, table_index)); |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 2969 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2970 | fib_table_entry_special_dpo_add (fib_index, |
| 2971 | &pfx, |
| 2972 | FIB_SOURCE_CLASSIFY, |
| 2973 | FIB_ENTRY_FLAG_NONE, &dpo); |
| 2974 | dpo_reset (&dpo); |
| 2975 | } |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 2976 | else |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2977 | { |
| 2978 | fib_table_entry_special_remove (fib_index, |
| 2979 | &pfx, FIB_SOURCE_CLASSIFY); |
| 2980 | } |
| 2981 | } |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 2982 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2983 | return 0; |
| 2984 | } |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2985 | #endif |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2986 | |
| 2987 | static clib_error_t * |
| 2988 | set_ip_classify_command_fn (vlib_main_t * vm, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2989 | unformat_input_t * input, |
| 2990 | vlib_cli_command_t * cmd) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2991 | { |
| 2992 | u32 table_index = ~0; |
| 2993 | int table_index_set = 0; |
| 2994 | u32 sw_if_index = ~0; |
| 2995 | int rv; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2996 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2997 | while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| 2998 | { |
| 2999 | if (unformat (input, "table-index %d", &table_index)) |
| 3000 | table_index_set = 1; |
| 3001 | else if (unformat (input, "intfc %U", unformat_vnet_sw_interface, |
| 3002 | vnet_get_main (), &sw_if_index)) |
| 3003 | ; |
| 3004 | else |
| 3005 | break; |
| 3006 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 3007 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3008 | if (table_index_set == 0) |
| 3009 | return clib_error_return (0, "classify table-index must be specified"); |
| 3010 | |
| 3011 | if (sw_if_index == ~0) |
| 3012 | return clib_error_return (0, "interface / subif must be specified"); |
| 3013 | |
| 3014 | rv = vnet_set_ip4_classify_intfc (vm, sw_if_index, table_index); |
| 3015 | |
| 3016 | switch (rv) |
| 3017 | { |
| 3018 | case 0: |
| 3019 | break; |
| 3020 | |
| 3021 | case VNET_API_ERROR_NO_MATCHING_INTERFACE: |
| 3022 | return clib_error_return (0, "No such interface"); |
| 3023 | |
| 3024 | case VNET_API_ERROR_NO_SUCH_ENTRY: |
| 3025 | return clib_error_return (0, "No such classifier table"); |
| 3026 | } |
| 3027 | return 0; |
| 3028 | } |
| 3029 | |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 3030 | /*? |
| 3031 | * Assign a classification table to an interface. The classification |
| 3032 | * table is created using the '<em>classify table</em>' and '<em>classify session</em>' |
| 3033 | * commands. Once the table is create, use this command to filter packets |
| 3034 | * on an interface. |
| 3035 | * |
| 3036 | * @cliexpar |
| 3037 | * Example of how to assign a classification table to an interface: |
| 3038 | * @cliexcmd{set ip classify intfc GigabitEthernet2/0/0 table-index 1} |
| 3039 | ?*/ |
| 3040 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3041 | VLIB_CLI_COMMAND (set_ip_classify_command, static) = |
| 3042 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3043 | .path = "set ip classify", |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 3044 | .short_help = |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 3045 | "set ip classify intfc <interface> table-index <classify-idx>", |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3046 | .function = set_ip_classify_command_fn, |
| 3047 | }; |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 3048 | /* *INDENT-ON* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3049 | |
| 3050 | /* |
| 3051 | * fd.io coding-style-patch-verification: ON |
| 3052 | * |
| 3053 | * Local Variables: |
| 3054 | * eval: (c-set-style "gnu") |
| 3055 | * End: |
| 3056 | */ |