Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2015 Cisco and/or its affiliates. |
| 3 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | * you may not use this file except in compliance with the License. |
| 5 | * You may obtain a copy of the License at: |
| 6 | * |
| 7 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | * |
| 9 | * Unless required by applicable law or agreed to in writing, software |
| 10 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | * See the License for the specific language governing permissions and |
| 13 | * limitations under the License. |
| 14 | */ |
| 15 | /* |
| 16 | * ip/ip4_forward.c: IP v4 forwarding |
| 17 | * |
| 18 | * Copyright (c) 2008 Eliot Dresselhaus |
| 19 | * |
| 20 | * Permission is hereby granted, free of charge, to any person obtaining |
| 21 | * a copy of this software and associated documentation files (the |
| 22 | * "Software"), to deal in the Software without restriction, including |
| 23 | * without limitation the rights to use, copy, modify, merge, publish, |
| 24 | * distribute, sublicense, and/or sell copies of the Software, and to |
| 25 | * permit persons to whom the Software is furnished to do so, subject to |
| 26 | * the following conditions: |
| 27 | * |
| 28 | * The above copyright notice and this permission notice shall be |
| 29 | * included in all copies or substantial portions of the Software. |
| 30 | * |
| 31 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 32 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 33 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 34 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE |
| 35 | * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
| 36 | * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
| 37 | * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 38 | */ |
| 39 | |
| 40 | #include <vnet/vnet.h> |
| 41 | #include <vnet/ip/ip.h> |
Ole Troan | 313f7e2 | 2018-04-10 16:02:51 +0200 | [diff] [blame] | 42 | #include <vnet/ip/ip_frag.h> |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 43 | #include <vnet/ethernet/ethernet.h> /* for ethernet_header_t */ |
| 44 | #include <vnet/ethernet/arp_packet.h> /* for ethernet_arp_header_t */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 45 | #include <vnet/ppp/ppp.h> |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 46 | #include <vnet/srp/srp.h> /* for srp_hw_interface_class */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 47 | #include <vnet/api_errno.h> /* for API error numbers */ |
| 48 | #include <vnet/fib/fib_table.h> /* for FIB table and entry creation */ |
| 49 | #include <vnet/fib/fib_entry.h> /* for FIB table and entry creation */ |
| 50 | #include <vnet/fib/fib_urpf_list.h> /* for FIB uRPF check */ |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 51 | #include <vnet/fib/ip4_fib.h> |
| 52 | #include <vnet/dpo/load_balance.h> |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 53 | #include <vnet/dpo/load_balance_map.h> |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 54 | #include <vnet/dpo/classify_dpo.h> |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 55 | #include <vnet/mfib/mfib_table.h> /* for mFIB table and entry creation */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 56 | |
Vijayabhaskar Katamreddy | acbde66 | 2018-01-23 13:39:40 -0800 | [diff] [blame] | 57 | #include <vnet/ip/ip4_forward.h> |
Neale Ranns | 25edf14 | 2019-03-22 08:12:48 +0000 | [diff] [blame] | 58 | #include <vnet/interface_output.h> |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 59 | |
Chris Luke | 8e5b041 | 2016-07-26 13:06:10 -0400 | [diff] [blame] | 60 | /** @brief IPv4 lookup node. |
Dave Barach | 9770e20 | 2016-07-06 10:29:27 -0400 | [diff] [blame] | 61 | @node ip4-lookup |
| 62 | |
| 63 | This is the main IPv4 lookup dispatch node. |
| 64 | |
| 65 | @param vm vlib_main_t corresponding to the current thread |
| 66 | @param node vlib_node_runtime_t |
| 67 | @param frame vlib_frame_t whose contents should be dispatched |
| 68 | |
| 69 | @par Graph mechanics: buffer metadata, next index usage |
| 70 | |
| 71 | @em Uses: |
| 72 | - <code>vnet_buffer(b)->sw_if_index[VLIB_RX]</code> |
| 73 | - Indicates the @c sw_if_index value of the interface that the |
| 74 | packet was received on. |
| 75 | - <code>vnet_buffer(b)->sw_if_index[VLIB_TX]</code> |
| 76 | - When the value is @c ~0 then the node performs a longest prefix |
| 77 | match (LPM) for the packet destination address in the FIB attached |
| 78 | to the receive interface. |
| 79 | - Otherwise perform LPM for the packet destination address in the |
| 80 | indicated FIB. In this case <code>[VLIB_TX]</code> is a FIB index |
| 81 | value (0, 1, ...) and not a VRF id. |
| 82 | |
| 83 | @em Sets: |
| 84 | - <code>vnet_buffer(b)->ip.adj_index[VLIB_TX]</code> |
| 85 | - The lookup result adjacency index. |
| 86 | |
| 87 | <em>Next Index:</em> |
| 88 | - Dispatches the packet to the node index found in |
| 89 | ip_adjacency_t @c adj->lookup_next_index |
| 90 | (where @c adj is the lookup result adjacency). |
| 91 | */ |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 92 | VLIB_NODE_FN (ip4_lookup_node) (vlib_main_t * vm, vlib_node_runtime_t * node, |
| 93 | vlib_frame_t * frame) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 94 | { |
Neale Ranns | cb54e3c | 2019-06-19 07:14:10 +0000 | [diff] [blame] | 95 | return ip4_lookup_inline (vm, node, frame); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 96 | } |
| 97 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 98 | static u8 *format_ip4_lookup_trace (u8 * s, va_list * args); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 99 | |
Neale Ranns | f868632 | 2017-11-29 02:39:53 -0800 | [diff] [blame] | 100 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 101 | VLIB_REGISTER_NODE (ip4_lookup_node) = |
| 102 | { |
Neale Ranns | f868632 | 2017-11-29 02:39:53 -0800 | [diff] [blame] | 103 | .name = "ip4-lookup", |
| 104 | .vector_size = sizeof (u32), |
| 105 | .format_trace = format_ip4_lookup_trace, |
| 106 | .n_next_nodes = IP_LOOKUP_N_NEXT, |
| 107 | .next_nodes = IP4_LOOKUP_NEXT_NODES, |
| 108 | }; |
| 109 | /* *INDENT-ON* */ |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 110 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 111 | VLIB_NODE_FN (ip4_load_balance_node) (vlib_main_t * vm, |
| 112 | vlib_node_runtime_t * node, |
| 113 | vlib_frame_t * frame) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 114 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 115 | vlib_combined_counter_main_t *cm = &load_balance_main.lbm_via_counters; |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 116 | u32 n_left, *from; |
Damjan Marion | 067cd62 | 2018-07-11 12:47:43 +0200 | [diff] [blame] | 117 | u32 thread_index = vm->thread_index; |
Zhiyong Yang | 6fec8ea | 2019-05-05 22:52:43 +0800 | [diff] [blame] | 118 | vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs; |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 119 | u16 nexts[VLIB_FRAME_SIZE], *next; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 120 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 121 | from = vlib_frame_vector_args (frame); |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 122 | n_left = frame->n_vectors; |
| 123 | next = nexts; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 124 | |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 125 | vlib_get_buffers (vm, from, bufs, n_left); |
| 126 | |
| 127 | while (n_left >= 4) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 128 | { |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 129 | const load_balance_t *lb0, *lb1; |
| 130 | const ip4_header_t *ip0, *ip1; |
| 131 | u32 lbi0, hc0, lbi1, hc1; |
| 132 | const dpo_id_t *dpo0, *dpo1; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 133 | |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 134 | /* Prefetch next iteration. */ |
| 135 | { |
| 136 | vlib_prefetch_buffer_header (b[2], LOAD); |
| 137 | vlib_prefetch_buffer_header (b[3], LOAD); |
| 138 | |
| 139 | CLIB_PREFETCH (b[2]->data, sizeof (ip0[0]), LOAD); |
| 140 | CLIB_PREFETCH (b[3]->data, sizeof (ip0[0]), LOAD); |
| 141 | } |
| 142 | |
| 143 | ip0 = vlib_buffer_get_current (b[0]); |
| 144 | ip1 = vlib_buffer_get_current (b[1]); |
| 145 | lbi0 = vnet_buffer (b[0])->ip.adj_index[VLIB_TX]; |
| 146 | lbi1 = vnet_buffer (b[1])->ip.adj_index[VLIB_TX]; |
| 147 | |
| 148 | lb0 = load_balance_get (lbi0); |
| 149 | lb1 = load_balance_get (lbi1); |
| 150 | |
| 151 | /* |
| 152 | * this node is for via FIBs we can re-use the hash value from the |
| 153 | * to node if present. |
| 154 | * We don't want to use the same hash value at each level in the recursion |
| 155 | * graph as that would lead to polarisation |
| 156 | */ |
| 157 | hc0 = hc1 = 0; |
| 158 | |
| 159 | if (PREDICT_FALSE (lb0->lb_n_buckets > 1)) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 160 | { |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 161 | if (PREDICT_TRUE (vnet_buffer (b[0])->ip.flow_hash)) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 162 | { |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 163 | hc0 = vnet_buffer (b[0])->ip.flow_hash = |
| 164 | vnet_buffer (b[0])->ip.flow_hash >> 1; |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 165 | } |
| 166 | else |
| 167 | { |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 168 | hc0 = vnet_buffer (b[0])->ip.flow_hash = |
| 169 | ip4_compute_flow_hash (ip0, lb0->lb_hash_config); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 170 | } |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 171 | dpo0 = load_balance_get_fwd_bucket |
| 172 | (lb0, (hc0 & (lb0->lb_n_buckets_minus_1))); |
| 173 | } |
| 174 | else |
| 175 | { |
| 176 | dpo0 = load_balance_get_bucket_i (lb0, 0); |
| 177 | } |
| 178 | if (PREDICT_FALSE (lb1->lb_n_buckets > 1)) |
| 179 | { |
| 180 | if (PREDICT_TRUE (vnet_buffer (b[1])->ip.flow_hash)) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 181 | { |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 182 | hc1 = vnet_buffer (b[1])->ip.flow_hash = |
| 183 | vnet_buffer (b[1])->ip.flow_hash >> 1; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 184 | } |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 185 | else |
| 186 | { |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 187 | hc1 = vnet_buffer (b[1])->ip.flow_hash = |
| 188 | ip4_compute_flow_hash (ip1, lb1->lb_hash_config); |
Neale Ranns | f12a83f | 2017-04-18 09:09:40 -0700 | [diff] [blame] | 189 | } |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 190 | dpo1 = load_balance_get_fwd_bucket |
| 191 | (lb1, (hc1 & (lb1->lb_n_buckets_minus_1))); |
| 192 | } |
| 193 | else |
| 194 | { |
| 195 | dpo1 = load_balance_get_bucket_i (lb1, 0); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 196 | } |
Neale Ranns | 2be95c1 | 2016-11-19 13:50:04 +0000 | [diff] [blame] | 197 | |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 198 | next[0] = dpo0->dpoi_next_node; |
| 199 | next[1] = dpo1->dpoi_next_node; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 200 | |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 201 | vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = dpo0->dpoi_index; |
| 202 | vnet_buffer (b[1])->ip.adj_index[VLIB_TX] = dpo1->dpoi_index; |
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 | vlib_increment_combined_counter |
| 205 | (cm, thread_index, lbi0, 1, vlib_buffer_length_in_chain (vm, b[0])); |
| 206 | vlib_increment_combined_counter |
| 207 | (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] | 208 | |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 209 | b += 2; |
| 210 | next += 2; |
| 211 | n_left -= 2; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 212 | } |
| 213 | |
Neale Ranns | 3ce72b2 | 2019-05-27 08:21:32 -0400 | [diff] [blame] | 214 | while (n_left > 0) |
| 215 | { |
| 216 | const load_balance_t *lb0; |
| 217 | const ip4_header_t *ip0; |
| 218 | const dpo_id_t *dpo0; |
| 219 | u32 lbi0, hc0; |
| 220 | |
| 221 | ip0 = vlib_buffer_get_current (b[0]); |
| 222 | lbi0 = vnet_buffer (b[0])->ip.adj_index[VLIB_TX]; |
| 223 | |
| 224 | lb0 = load_balance_get (lbi0); |
| 225 | |
| 226 | hc0 = 0; |
| 227 | if (PREDICT_FALSE (lb0->lb_n_buckets > 1)) |
| 228 | { |
| 229 | if (PREDICT_TRUE (vnet_buffer (b[0])->ip.flow_hash)) |
| 230 | { |
| 231 | hc0 = vnet_buffer (b[0])->ip.flow_hash = |
| 232 | vnet_buffer (b[0])->ip.flow_hash >> 1; |
| 233 | } |
| 234 | else |
| 235 | { |
| 236 | hc0 = vnet_buffer (b[0])->ip.flow_hash = |
| 237 | ip4_compute_flow_hash (ip0, lb0->lb_hash_config); |
| 238 | } |
| 239 | dpo0 = load_balance_get_fwd_bucket |
| 240 | (lb0, (hc0 & (lb0->lb_n_buckets_minus_1))); |
| 241 | } |
| 242 | else |
| 243 | { |
| 244 | dpo0 = load_balance_get_bucket_i (lb0, 0); |
| 245 | } |
| 246 | |
| 247 | next[0] = dpo0->dpoi_next_node; |
| 248 | vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = dpo0->dpoi_index; |
| 249 | |
| 250 | vlib_increment_combined_counter |
| 251 | (cm, thread_index, lbi0, 1, vlib_buffer_length_in_chain (vm, b[0])); |
| 252 | |
| 253 | b += 1; |
| 254 | next += 1; |
| 255 | n_left -= 1; |
| 256 | } |
| 257 | |
| 258 | vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors); |
Neale Ranns | a71844f | 2018-11-08 07:31:36 -0800 | [diff] [blame] | 259 | if (node->flags & VLIB_NODE_FLAG_TRACE) |
| 260 | ip4_forward_next_trace (vm, node, frame, VLIB_TX); |
| 261 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 262 | return frame->n_vectors; |
| 263 | } |
| 264 | |
Neale Ranns | f868632 | 2017-11-29 02:39:53 -0800 | [diff] [blame] | 265 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 266 | VLIB_REGISTER_NODE (ip4_load_balance_node) = |
| 267 | { |
Neale Ranns | f868632 | 2017-11-29 02:39:53 -0800 | [diff] [blame] | 268 | .name = "ip4-load-balance", |
| 269 | .vector_size = sizeof (u32), |
| 270 | .sibling_of = "ip4-lookup", |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 271 | .format_trace = format_ip4_lookup_trace, |
Neale Ranns | f868632 | 2017-11-29 02:39:53 -0800 | [diff] [blame] | 272 | }; |
| 273 | /* *INDENT-ON* */ |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 274 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 275 | #ifndef CLIB_MARCH_VARIANT |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 276 | /* get first interface address */ |
| 277 | ip4_address_t * |
| 278 | ip4_interface_first_address (ip4_main_t * im, u32 sw_if_index, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 279 | ip_interface_address_t ** result_ia) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 280 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 281 | ip_lookup_main_t *lm = &im->lookup_main; |
| 282 | ip_interface_address_t *ia = 0; |
| 283 | ip4_address_t *result = 0; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 284 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 285 | /* *INDENT-OFF* */ |
| 286 | foreach_ip_interface_address |
| 287 | (lm, ia, sw_if_index, |
| 288 | 1 /* honor unnumbered */ , |
| 289 | ({ |
| 290 | ip4_address_t * a = |
| 291 | ip_interface_address_get_address (lm, ia); |
| 292 | result = a; |
| 293 | break; |
| 294 | })); |
| 295 | /* *INDENT-OFF* */ |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 296 | if (result_ia) |
| 297 | *result_ia = result ? ia : 0; |
| 298 | return result; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 299 | } |
Matthew G Smith | 88d29a9 | 2019-07-17 10:01:17 -0500 | [diff] [blame] | 300 | #endif |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 301 | |
| 302 | static void |
Neale Ranns | 1855b8e | 2018-07-11 10:31:26 -0700 | [diff] [blame] | 303 | ip4_add_subnet_bcast_route (u32 fib_index, |
| 304 | fib_prefix_t *pfx, |
| 305 | u32 sw_if_index) |
| 306 | { |
| 307 | vnet_sw_interface_flags_t iflags; |
| 308 | |
| 309 | iflags = vnet_sw_interface_get_flags(vnet_get_main(), sw_if_index); |
| 310 | |
| 311 | fib_table_entry_special_remove(fib_index, |
| 312 | pfx, |
| 313 | FIB_SOURCE_INTERFACE); |
| 314 | |
| 315 | if (iflags & VNET_SW_INTERFACE_FLAG_DIRECTED_BCAST) |
| 316 | { |
| 317 | fib_table_entry_update_one_path (fib_index, pfx, |
| 318 | FIB_SOURCE_INTERFACE, |
| 319 | FIB_ENTRY_FLAG_NONE, |
| 320 | DPO_PROTO_IP4, |
| 321 | /* No next-hop address */ |
| 322 | &ADJ_BCAST_ADDR, |
| 323 | sw_if_index, |
| 324 | // invalid FIB index |
| 325 | ~0, |
| 326 | 1, |
| 327 | // no out-label stack |
| 328 | NULL, |
| 329 | FIB_ROUTE_PATH_FLAG_NONE); |
| 330 | } |
| 331 | else |
| 332 | { |
| 333 | fib_table_entry_special_add(fib_index, |
| 334 | pfx, |
| 335 | FIB_SOURCE_INTERFACE, |
| 336 | (FIB_ENTRY_FLAG_DROP | |
| 337 | FIB_ENTRY_FLAG_LOOSE_URPF_EXEMPT)); |
| 338 | } |
| 339 | } |
| 340 | |
| 341 | static void |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 342 | ip4_add_interface_prefix_routes (ip4_main_t *im, |
| 343 | u32 sw_if_index, |
| 344 | u32 fib_index, |
| 345 | ip_interface_address_t * a) |
| 346 | { |
| 347 | ip_lookup_main_t *lm = &im->lookup_main; |
| 348 | ip_interface_prefix_t *if_prefix; |
| 349 | ip4_address_t *address = ip_interface_address_get_address (lm, a); |
| 350 | |
| 351 | ip_interface_prefix_key_t key = { |
| 352 | .prefix = { |
| 353 | .fp_len = a->address_length, |
| 354 | .fp_proto = FIB_PROTOCOL_IP4, |
| 355 | .fp_addr.ip4.as_u32 = address->as_u32 & im->fib_masks[a->address_length], |
| 356 | }, |
| 357 | .sw_if_index = sw_if_index, |
| 358 | }; |
| 359 | |
| 360 | fib_prefix_t pfx_special = { |
| 361 | .fp_proto = FIB_PROTOCOL_IP4, |
| 362 | }; |
| 363 | |
| 364 | /* If prefix already set on interface, just increment ref count & return */ |
| 365 | if_prefix = ip_get_interface_prefix (lm, &key); |
| 366 | if (if_prefix) |
| 367 | { |
| 368 | if_prefix->ref_count += 1; |
| 369 | return; |
| 370 | } |
| 371 | |
| 372 | /* New prefix - allocate a pool entry, initialize it, add to the hash */ |
| 373 | pool_get (lm->if_prefix_pool, if_prefix); |
| 374 | if_prefix->ref_count = 1; |
| 375 | if_prefix->src_ia_index = a - lm->if_address_pool; |
| 376 | clib_memcpy (&if_prefix->key, &key, sizeof (key)); |
| 377 | mhash_set (&lm->prefix_to_if_prefix_index, &key, |
| 378 | if_prefix - lm->if_prefix_pool, 0 /* old value */); |
| 379 | |
| 380 | /* length <= 30 - add glean, drop first address, maybe drop bcast address */ |
| 381 | if (a->address_length <= 30) |
| 382 | { |
| 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 | |
| 402 | /* set a drop route for the base address of the prefix */ |
| 403 | pfx_special.fp_len = 32; |
| 404 | pfx_special.fp_addr.ip4.as_u32 = |
| 405 | address->as_u32 & im->fib_masks[a->address_length]; |
| 406 | |
| 407 | if (pfx_special.fp_addr.ip4.as_u32 != address->as_u32) |
| 408 | fib_table_entry_special_add (fib_index, &pfx_special, |
| 409 | FIB_SOURCE_INTERFACE, |
| 410 | (FIB_ENTRY_FLAG_DROP | |
| 411 | FIB_ENTRY_FLAG_LOOSE_URPF_EXEMPT)); |
| 412 | |
| 413 | /* set a route for the broadcast address of the prefix */ |
| 414 | pfx_special.fp_len = 32; |
| 415 | pfx_special.fp_addr.ip4.as_u32 = |
| 416 | address->as_u32 | ~im->fib_masks[a->address_length]; |
| 417 | if (pfx_special.fp_addr.ip4.as_u32 != address->as_u32) |
| 418 | ip4_add_subnet_bcast_route (fib_index, &pfx_special, sw_if_index); |
| 419 | |
| 420 | |
| 421 | } |
| 422 | /* length == 31 - add an attached route for the other address */ |
| 423 | else if (a->address_length == 31) |
| 424 | { |
| 425 | pfx_special.fp_len = 32; |
| 426 | pfx_special.fp_addr.ip4.as_u32 = |
| 427 | address->as_u32 ^ clib_host_to_net_u32(1); |
| 428 | |
| 429 | fib_table_entry_update_one_path (fib_index, &pfx_special, |
| 430 | FIB_SOURCE_INTERFACE, |
| 431 | (FIB_ENTRY_FLAG_ATTACHED), |
| 432 | DPO_PROTO_IP4, |
| 433 | &pfx_special.fp_addr, |
| 434 | sw_if_index, |
| 435 | /* invalid FIB index */ |
| 436 | ~0, |
| 437 | 1, |
| 438 | NULL, |
| 439 | FIB_ROUTE_PATH_FLAG_NONE); |
| 440 | } |
| 441 | } |
| 442 | |
| 443 | static void |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 444 | ip4_add_interface_routes (u32 sw_if_index, |
| 445 | ip4_main_t * im, u32 fib_index, |
| 446 | ip_interface_address_t * a) |
| 447 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 448 | ip_lookup_main_t *lm = &im->lookup_main; |
| 449 | ip4_address_t *address = ip_interface_address_get_address (lm, a); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 450 | fib_prefix_t pfx = { |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 451 | .fp_len = 32, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 452 | .fp_proto = FIB_PROTOCOL_IP4, |
| 453 | .fp_addr.ip4 = *address, |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 454 | }; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 455 | |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 456 | /* set special routes for the prefix if needed */ |
| 457 | ip4_add_interface_prefix_routes (im, sw_if_index, fib_index, a); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 458 | |
| 459 | 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] | 460 | { |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 461 | u32 classify_table_index = |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 462 | lm->classify_table_index_by_sw_if_index[sw_if_index]; |
| 463 | if (classify_table_index != (u32) ~ 0) |
| 464 | { |
| 465 | dpo_id_t dpo = DPO_INVALID; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 466 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 467 | dpo_set (&dpo, |
| 468 | DPO_CLASSIFY, |
| 469 | DPO_PROTO_IP4, |
| 470 | classify_dpo_create (DPO_PROTO_IP4, classify_table_index)); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 471 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 472 | fib_table_entry_special_dpo_add (fib_index, |
| 473 | &pfx, |
| 474 | FIB_SOURCE_CLASSIFY, |
| 475 | FIB_ENTRY_FLAG_NONE, &dpo); |
| 476 | dpo_reset (&dpo); |
| 477 | } |
| 478 | } |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 479 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 480 | fib_table_entry_update_one_path (fib_index, &pfx, |
| 481 | FIB_SOURCE_INTERFACE, |
| 482 | (FIB_ENTRY_FLAG_CONNECTED | |
| 483 | FIB_ENTRY_FLAG_LOCAL), |
Neale Ranns | da78f95 | 2017-05-24 09:15:43 -0700 | [diff] [blame] | 484 | DPO_PROTO_IP4, |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 485 | &pfx.fp_addr, |
| 486 | sw_if_index, |
| 487 | // invalid FIB index |
| 488 | ~0, |
| 489 | 1, NULL, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 490 | FIB_ROUTE_PATH_FLAG_NONE); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 491 | } |
| 492 | |
| 493 | static void |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 494 | ip4_del_interface_prefix_routes (ip4_main_t * im, |
| 495 | u32 sw_if_index, |
| 496 | u32 fib_index, |
| 497 | ip4_address_t * address, |
| 498 | u32 address_length) |
| 499 | { |
| 500 | ip_lookup_main_t *lm = &im->lookup_main; |
| 501 | ip_interface_prefix_t *if_prefix; |
| 502 | |
| 503 | ip_interface_prefix_key_t key = { |
| 504 | .prefix = { |
| 505 | .fp_len = address_length, |
| 506 | .fp_proto = FIB_PROTOCOL_IP4, |
| 507 | .fp_addr.ip4.as_u32 = address->as_u32 & im->fib_masks[address_length], |
| 508 | }, |
| 509 | .sw_if_index = sw_if_index, |
| 510 | }; |
| 511 | |
| 512 | fib_prefix_t pfx_special = { |
| 513 | .fp_len = 32, |
| 514 | .fp_proto = FIB_PROTOCOL_IP4, |
| 515 | }; |
| 516 | |
| 517 | if_prefix = ip_get_interface_prefix (lm, &key); |
| 518 | if (!if_prefix) |
| 519 | { |
| 520 | clib_warning ("Prefix not found while deleting %U", |
| 521 | format_ip4_address_and_length, address, address_length); |
| 522 | return; |
| 523 | } |
| 524 | |
| 525 | if_prefix->ref_count -= 1; |
| 526 | |
| 527 | /* |
| 528 | * Routes need to be adjusted if: |
| 529 | * - deleting last intf addr in prefix |
| 530 | * - deleting intf addr used as default source address in glean adjacency |
| 531 | * |
| 532 | * We're done now otherwise |
| 533 | */ |
| 534 | if ((if_prefix->ref_count > 0) && |
| 535 | !pool_is_free_index (lm->if_address_pool, if_prefix->src_ia_index)) |
| 536 | return; |
| 537 | |
| 538 | /* length <= 30, delete glean route, first address, last address */ |
| 539 | if (address_length <= 30) |
| 540 | { |
| 541 | |
| 542 | /* remove glean route for prefix */ |
| 543 | pfx_special.fp_addr.ip4 = *address; |
| 544 | pfx_special.fp_len = address_length; |
| 545 | fib_table_entry_delete (fib_index, &pfx_special, FIB_SOURCE_INTERFACE); |
| 546 | |
| 547 | /* if no more intf addresses in prefix, remove other special routes */ |
| 548 | if (!if_prefix->ref_count) |
| 549 | { |
| 550 | /* first address in prefix */ |
| 551 | pfx_special.fp_addr.ip4.as_u32 = |
| 552 | address->as_u32 & im->fib_masks[address_length]; |
| 553 | pfx_special.fp_len = 32; |
| 554 | |
| 555 | if (pfx_special.fp_addr.ip4.as_u32 != address->as_u32) |
| 556 | fib_table_entry_special_remove (fib_index, |
| 557 | &pfx_special, |
| 558 | FIB_SOURCE_INTERFACE); |
| 559 | |
| 560 | /* prefix broadcast address */ |
| 561 | pfx_special.fp_addr.ip4.as_u32 = |
| 562 | address->as_u32 | ~im->fib_masks[address_length]; |
| 563 | pfx_special.fp_len = 32; |
| 564 | |
| 565 | if (pfx_special.fp_addr.ip4.as_u32 != address->as_u32) |
| 566 | fib_table_entry_special_remove (fib_index, |
| 567 | &pfx_special, |
| 568 | FIB_SOURCE_INTERFACE); |
| 569 | } |
| 570 | else |
| 571 | /* default source addr just got deleted, find another */ |
| 572 | { |
| 573 | ip_interface_address_t *new_src_ia = NULL; |
| 574 | ip4_address_t *new_src_addr = NULL; |
| 575 | |
| 576 | new_src_addr = |
| 577 | ip4_interface_address_matching_destination |
| 578 | (im, address, sw_if_index, &new_src_ia); |
| 579 | |
| 580 | if_prefix->src_ia_index = new_src_ia - lm->if_address_pool; |
| 581 | |
| 582 | pfx_special.fp_len = address_length; |
| 583 | pfx_special.fp_addr.ip4 = *new_src_addr; |
| 584 | |
| 585 | /* set new glean route for the prefix */ |
| 586 | fib_table_entry_update_one_path (fib_index, &pfx_special, |
| 587 | FIB_SOURCE_INTERFACE, |
| 588 | (FIB_ENTRY_FLAG_CONNECTED | |
| 589 | FIB_ENTRY_FLAG_ATTACHED), |
| 590 | DPO_PROTO_IP4, |
| 591 | /* No next-hop address */ |
| 592 | NULL, |
| 593 | sw_if_index, |
| 594 | /* invalid FIB index */ |
| 595 | ~0, |
| 596 | 1, |
| 597 | /* no out-label stack */ |
| 598 | NULL, |
| 599 | FIB_ROUTE_PATH_FLAG_NONE); |
| 600 | return; |
| 601 | } |
| 602 | } |
| 603 | /* length == 31, delete attached route for the other address */ |
| 604 | else if (address_length == 31) |
| 605 | { |
| 606 | pfx_special.fp_addr.ip4.as_u32 = |
| 607 | address->as_u32 ^ clib_host_to_net_u32(1); |
| 608 | |
| 609 | fib_table_entry_delete (fib_index, &pfx_special, FIB_SOURCE_INTERFACE); |
| 610 | } |
| 611 | |
| 612 | mhash_unset (&lm->prefix_to_if_prefix_index, &key, 0 /* old_value */); |
| 613 | pool_put (lm->if_prefix_pool, if_prefix); |
| 614 | } |
| 615 | |
| 616 | static void |
| 617 | ip4_del_interface_routes (u32 sw_if_index, |
| 618 | ip4_main_t * im, |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 619 | u32 fib_index, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 620 | ip4_address_t * address, u32 address_length) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 621 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 622 | fib_prefix_t pfx = { |
| 623 | .fp_len = address_length, |
| 624 | .fp_proto = FIB_PROTOCOL_IP4, |
| 625 | .fp_addr.ip4 = *address, |
| 626 | }; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 627 | |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 628 | ip4_del_interface_prefix_routes (im, sw_if_index, fib_index, |
| 629 | address, address_length); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 630 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 631 | pfx.fp_len = 32; |
| 632 | fib_table_entry_delete (fib_index, &pfx, FIB_SOURCE_INTERFACE); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 633 | } |
| 634 | |
Matthew G Smith | 88d29a9 | 2019-07-17 10:01:17 -0500 | [diff] [blame] | 635 | #ifndef CLIB_MARCH_VARIANT |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 636 | void |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 637 | ip4_sw_interface_enable_disable (u32 sw_if_index, u32 is_enable) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 638 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 639 | ip4_main_t *im = &ip4_main; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 640 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 641 | vec_validate_init_empty (im->ip_enabled_by_sw_if_index, sw_if_index, 0); |
| 642 | |
| 643 | /* |
| 644 | * enable/disable only on the 1<->0 transition |
| 645 | */ |
| 646 | if (is_enable) |
| 647 | { |
| 648 | if (1 != ++im->ip_enabled_by_sw_if_index[sw_if_index]) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 649 | return; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 650 | } |
| 651 | else |
| 652 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 653 | ASSERT (im->ip_enabled_by_sw_if_index[sw_if_index] > 0); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 654 | if (0 != --im->ip_enabled_by_sw_if_index[sw_if_index]) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 655 | return; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 656 | } |
Neale Ranns | 8269d3d | 2018-01-30 09:02:20 -0800 | [diff] [blame] | 657 | vnet_feature_enable_disable ("ip4-unicast", "ip4-not-enabled", sw_if_index, |
Damjan Marion | 4d48993 | 2016-12-09 03:21:27 -0800 | [diff] [blame] | 658 | !is_enable, 0, 0); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 659 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 660 | |
Neale Ranns | 8269d3d | 2018-01-30 09:02:20 -0800 | [diff] [blame] | 661 | vnet_feature_enable_disable ("ip4-multicast", "ip4-not-enabled", |
Neale Ranns | 180279b | 2017-03-16 15:49:09 -0400 | [diff] [blame] | 662 | sw_if_index, !is_enable, 0, 0); |
Neale Ranns | 57e53bb | 2019-05-29 13:58:43 +0000 | [diff] [blame] | 663 | |
| 664 | { |
| 665 | ip4_enable_disable_interface_callback_t *cb; |
| 666 | vec_foreach (cb, im->enable_disable_interface_callbacks) |
| 667 | cb->function (im, cb->function_opaque, sw_if_index, is_enable); |
| 668 | } |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 669 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 670 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 671 | static clib_error_t * |
| 672 | ip4_add_del_interface_address_internal (vlib_main_t * vm, |
| 673 | u32 sw_if_index, |
| 674 | ip4_address_t * address, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 675 | u32 address_length, u32 is_del) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 676 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 677 | vnet_main_t *vnm = vnet_get_main (); |
| 678 | ip4_main_t *im = &ip4_main; |
| 679 | ip_lookup_main_t *lm = &im->lookup_main; |
| 680 | clib_error_t *error = 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 681 | u32 if_address_index, elts_before; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 682 | ip4_address_fib_t ip4_af, *addr_fib = 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 683 | |
Pavel Kotucek | 5780898 | 2017-08-02 08:20:19 +0200 | [diff] [blame] | 684 | /* local0 interface doesn't support IP addressing */ |
| 685 | if (sw_if_index == 0) |
| 686 | { |
| 687 | return |
| 688 | clib_error_create ("local0 interface doesn't support IP addressing"); |
| 689 | } |
| 690 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 691 | vec_validate (im->fib_index_by_sw_if_index, sw_if_index); |
| 692 | ip4_addr_fib_init (&ip4_af, address, |
| 693 | vec_elt (im->fib_index_by_sw_if_index, sw_if_index)); |
| 694 | vec_add1 (addr_fib, ip4_af); |
| 695 | |
Neale Ranns | 744902e | 2017-08-14 10:35:44 -0700 | [diff] [blame] | 696 | /* |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 697 | * there is no support for adj-fib handling in the presence of overlapping |
| 698 | * subnets on interfaces. Easy fix - disallow overlapping subnets, like |
| 699 | * most routers do. |
| 700 | */ |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 701 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 702 | if (!is_del) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 703 | { |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 704 | /* When adding an address check that it does not conflict |
Neale Ranns | 744902e | 2017-08-14 10:35:44 -0700 | [diff] [blame] | 705 | with an existing address on any interface in this table. */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 706 | ip_interface_address_t *ia; |
Neale Ranns | 744902e | 2017-08-14 10:35:44 -0700 | [diff] [blame] | 707 | vnet_sw_interface_t *sif; |
| 708 | |
| 709 | pool_foreach(sif, vnm->interface_main.sw_interfaces, |
| 710 | ({ |
| 711 | if (im->fib_index_by_sw_if_index[sw_if_index] == |
| 712 | im->fib_index_by_sw_if_index[sif->sw_if_index]) |
| 713 | { |
| 714 | foreach_ip_interface_address |
| 715 | (&im->lookup_main, ia, sif->sw_if_index, |
| 716 | 0 /* honor unnumbered */ , |
| 717 | ({ |
| 718 | ip4_address_t * x = |
| 719 | ip_interface_address_get_address |
| 720 | (&im->lookup_main, ia); |
| 721 | if (ip4_destination_matches_route |
| 722 | (im, address, x, ia->address_length) || |
| 723 | ip4_destination_matches_route (im, |
| 724 | x, |
| 725 | address, |
| 726 | address_length)) |
| 727 | { |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 728 | /* an intf may have >1 addr from the same prefix */ |
| 729 | if ((sw_if_index == sif->sw_if_index) && |
| 730 | (ia->address_length == address_length) && |
| 731 | (x->as_u32 != address->as_u32)) |
| 732 | continue; |
| 733 | |
| 734 | /* error if the length or intf was different */ |
Neale Ranns | 744902e | 2017-08-14 10:35:44 -0700 | [diff] [blame] | 735 | vnm->api_errno = VNET_API_ERROR_DUPLICATE_IF_ADDRESS; |
| 736 | |
| 737 | return |
| 738 | clib_error_create |
| 739 | ("failed to add %U which conflicts with %U for interface %U", |
| 740 | format_ip4_address_and_length, address, |
| 741 | address_length, |
| 742 | format_ip4_address_and_length, x, |
| 743 | ia->address_length, |
| 744 | format_vnet_sw_if_index_name, vnm, |
| 745 | sif->sw_if_index); |
| 746 | } |
| 747 | })); |
| 748 | } |
| 749 | })); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 750 | } |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 751 | /* *INDENT-ON* */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 752 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 753 | elts_before = pool_elts (lm->if_address_pool); |
| 754 | |
| 755 | error = ip_interface_address_add_del |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 756 | (lm, sw_if_index, addr_fib, address_length, is_del, &if_address_index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 757 | if (error) |
| 758 | goto done; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 759 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 760 | ip4_sw_interface_enable_disable (sw_if_index, !is_del); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 761 | |
Matthew G Smith | 88d29a9 | 2019-07-17 10:01:17 -0500 | [diff] [blame] | 762 | /* intf addr routes are added/deleted on admin up/down */ |
| 763 | if (vnet_sw_interface_is_admin_up (vnm, sw_if_index)) |
| 764 | { |
| 765 | if (is_del) |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 766 | ip4_del_interface_routes (sw_if_index, |
| 767 | im, ip4_af.fib_index, address, |
Matthew G Smith | 88d29a9 | 2019-07-17 10:01:17 -0500 | [diff] [blame] | 768 | address_length); |
| 769 | else |
| 770 | ip4_add_interface_routes (sw_if_index, |
| 771 | im, ip4_af.fib_index, |
| 772 | pool_elt_at_index |
| 773 | (lm->if_address_pool, if_address_index)); |
| 774 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 775 | |
| 776 | /* If pool did not grow/shrink: add duplicate address. */ |
| 777 | if (elts_before != pool_elts (lm->if_address_pool)) |
| 778 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 779 | ip4_add_del_interface_address_callback_t *cb; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 780 | vec_foreach (cb, im->add_del_interface_address_callbacks) |
| 781 | cb->function (im, cb->function_opaque, sw_if_index, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 782 | address, address_length, if_address_index, is_del); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 783 | } |
| 784 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 785 | done: |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 786 | vec_free (addr_fib); |
| 787 | return error; |
| 788 | } |
| 789 | |
| 790 | clib_error_t * |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 791 | ip4_add_del_interface_address (vlib_main_t * vm, |
| 792 | u32 sw_if_index, |
| 793 | ip4_address_t * address, |
| 794 | u32 address_length, u32 is_del) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 795 | { |
| 796 | return ip4_add_del_interface_address_internal |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 797 | (vm, sw_if_index, address, address_length, is_del); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 798 | } |
| 799 | |
Neale Ranns | 1855b8e | 2018-07-11 10:31:26 -0700 | [diff] [blame] | 800 | void |
| 801 | ip4_directed_broadcast (u32 sw_if_index, u8 enable) |
| 802 | { |
| 803 | ip_interface_address_t *ia; |
| 804 | ip4_main_t *im; |
| 805 | |
| 806 | im = &ip4_main; |
| 807 | |
| 808 | /* |
| 809 | * when directed broadcast is enabled, the subnet braodcast route will forward |
| 810 | * packets using an adjacency with a broadcast MAC. otherwise it drops |
| 811 | */ |
| 812 | /* *INDENT-OFF* */ |
| 813 | foreach_ip_interface_address(&im->lookup_main, ia, |
| 814 | sw_if_index, 0, |
| 815 | ({ |
| 816 | if (ia->address_length <= 30) |
| 817 | { |
| 818 | ip4_address_t *ipa; |
| 819 | |
| 820 | ipa = ip_interface_address_get_address (&im->lookup_main, ia); |
| 821 | |
| 822 | fib_prefix_t pfx = { |
| 823 | .fp_len = 32, |
| 824 | .fp_proto = FIB_PROTOCOL_IP4, |
| 825 | .fp_addr = { |
| 826 | .ip4.as_u32 = (ipa->as_u32 | ~im->fib_masks[ia->address_length]), |
| 827 | }, |
| 828 | }; |
| 829 | |
| 830 | ip4_add_subnet_bcast_route |
| 831 | (fib_table_get_index_for_sw_if_index(FIB_PROTOCOL_IP4, |
| 832 | sw_if_index), |
| 833 | &pfx, sw_if_index); |
| 834 | } |
| 835 | })); |
| 836 | /* *INDENT-ON* */ |
| 837 | } |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 838 | #endif |
Neale Ranns | 1855b8e | 2018-07-11 10:31:26 -0700 | [diff] [blame] | 839 | |
Matthew G Smith | 88d29a9 | 2019-07-17 10:01:17 -0500 | [diff] [blame] | 840 | static clib_error_t * |
| 841 | ip4_sw_interface_admin_up_down (vnet_main_t * vnm, u32 sw_if_index, u32 flags) |
| 842 | { |
| 843 | ip4_main_t *im = &ip4_main; |
| 844 | ip_interface_address_t *ia; |
| 845 | ip4_address_t *a; |
| 846 | u32 is_admin_up, fib_index; |
| 847 | |
| 848 | /* Fill in lookup tables with default table (0). */ |
| 849 | vec_validate (im->fib_index_by_sw_if_index, sw_if_index); |
| 850 | |
| 851 | vec_validate_init_empty (im-> |
| 852 | lookup_main.if_address_pool_index_by_sw_if_index, |
| 853 | sw_if_index, ~0); |
| 854 | |
| 855 | is_admin_up = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) != 0; |
| 856 | |
| 857 | fib_index = vec_elt (im->fib_index_by_sw_if_index, sw_if_index); |
| 858 | |
| 859 | /* *INDENT-OFF* */ |
| 860 | foreach_ip_interface_address (&im->lookup_main, ia, sw_if_index, |
| 861 | 0 /* honor unnumbered */, |
| 862 | ({ |
| 863 | a = ip_interface_address_get_address (&im->lookup_main, ia); |
| 864 | if (is_admin_up) |
| 865 | ip4_add_interface_routes (sw_if_index, |
| 866 | im, fib_index, |
| 867 | ia); |
| 868 | else |
Matthew Smith | 6c92f5b | 2019-08-07 11:46:30 -0500 | [diff] [blame] | 869 | ip4_del_interface_routes (sw_if_index, |
| 870 | im, fib_index, |
Matthew G Smith | 88d29a9 | 2019-07-17 10:01:17 -0500 | [diff] [blame] | 871 | a, ia->address_length); |
| 872 | })); |
| 873 | /* *INDENT-ON* */ |
| 874 | |
| 875 | return 0; |
| 876 | } |
| 877 | |
| 878 | VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION (ip4_sw_interface_admin_up_down); |
| 879 | |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 880 | /* Built-in ip4 unicast rx feature path definition */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 881 | /* *INDENT-OFF* */ |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 882 | VNET_FEATURE_ARC_INIT (ip4_unicast, static) = |
| 883 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 884 | .arc_name = "ip4-unicast", |
Damjan Marion | 892e076 | 2016-12-09 18:52:05 +0100 | [diff] [blame] | 885 | .start_nodes = VNET_FEATURES ("ip4-input", "ip4-input-no-checksum"), |
Dave Barach | a25def7 | 2018-11-26 11:04:45 -0500 | [diff] [blame] | 886 | .last_in_arc = "ip4-lookup", |
Damjan Marion | 892e076 | 2016-12-09 18:52:05 +0100 | [diff] [blame] | 887 | .arc_index_ptr = &ip4_main.lookup_main.ucast_feature_arc_index, |
| 888 | }; |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 889 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 890 | VNET_FEATURE_INIT (ip4_flow_classify, static) = |
| 891 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 892 | .arc_name = "ip4-unicast", |
Juraj Sloboda | 506b245 | 2016-08-07 23:45:24 -0700 | [diff] [blame] | 893 | .node_name = "ip4-flow-classify", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 894 | .runs_before = VNET_FEATURES ("ip4-inacl"), |
Juraj Sloboda | 506b245 | 2016-08-07 23:45:24 -0700 | [diff] [blame] | 895 | }; |
| 896 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 897 | VNET_FEATURE_INIT (ip4_inacl, static) = |
| 898 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 899 | .arc_name = "ip4-unicast", |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 900 | .node_name = "ip4-inacl", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 901 | .runs_before = VNET_FEATURES ("ip4-source-check-via-rx"), |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 902 | }; |
| 903 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 904 | VNET_FEATURE_INIT (ip4_source_check_1, static) = |
| 905 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 906 | .arc_name = "ip4-unicast", |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 907 | .node_name = "ip4-source-check-via-rx", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 908 | .runs_before = VNET_FEATURES ("ip4-source-check-via-any"), |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 909 | }; |
| 910 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 911 | VNET_FEATURE_INIT (ip4_source_check_2, static) = |
| 912 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 913 | .arc_name = "ip4-unicast", |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 914 | .node_name = "ip4-source-check-via-any", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 915 | .runs_before = VNET_FEATURES ("ip4-policer-classify"), |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 916 | }; |
| 917 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 918 | VNET_FEATURE_INIT (ip4_source_and_port_range_check_rx, static) = |
| 919 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 920 | .arc_name = "ip4-unicast", |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 921 | .node_name = "ip4-source-and-port-range-check-rx", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 922 | .runs_before = VNET_FEATURES ("ip4-policer-classify"), |
Dave Barach | 6f9bca2 | 2016-04-30 10:25:32 -0400 | [diff] [blame] | 923 | }; |
| 924 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 925 | VNET_FEATURE_INIT (ip4_policer_classify, static) = |
| 926 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 927 | .arc_name = "ip4-unicast", |
Matus Fabian | 70e6a8d | 2016-06-20 08:10:42 -0700 | [diff] [blame] | 928 | .node_name = "ip4-policer-classify", |
Pierre Pfister | 057b356 | 2018-12-10 17:01:01 +0100 | [diff] [blame] | 929 | .runs_before = VNET_FEATURES ("ipsec4-input-feature"), |
Matus Fabian | 70e6a8d | 2016-06-20 08:10:42 -0700 | [diff] [blame] | 930 | }; |
| 931 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 932 | VNET_FEATURE_INIT (ip4_ipsec, static) = |
| 933 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 934 | .arc_name = "ip4-unicast", |
Pierre Pfister | 057b356 | 2018-12-10 17:01:01 +0100 | [diff] [blame] | 935 | .node_name = "ipsec4-input-feature", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 936 | .runs_before = VNET_FEATURES ("vpath-input-ip4"), |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 937 | }; |
| 938 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 939 | VNET_FEATURE_INIT (ip4_vpath, static) = |
| 940 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 941 | .arc_name = "ip4-unicast", |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 942 | .node_name = "vpath-input-ip4", |
John Lo | 37682e1 | 2016-11-30 12:51:39 -0500 | [diff] [blame] | 943 | .runs_before = VNET_FEATURES ("ip4-vxlan-bypass"), |
| 944 | }; |
| 945 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 946 | VNET_FEATURE_INIT (ip4_vxlan_bypass, static) = |
| 947 | { |
John Lo | 37682e1 | 2016-11-30 12:51:39 -0500 | [diff] [blame] | 948 | .arc_name = "ip4-unicast", |
| 949 | .node_name = "ip4-vxlan-bypass", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 950 | .runs_before = VNET_FEATURES ("ip4-lookup"), |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 951 | }; |
| 952 | |
Neale Ranns | 8269d3d | 2018-01-30 09:02:20 -0800 | [diff] [blame] | 953 | VNET_FEATURE_INIT (ip4_not_enabled, static) = |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 954 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 955 | .arc_name = "ip4-unicast", |
Neale Ranns | 8269d3d | 2018-01-30 09:02:20 -0800 | [diff] [blame] | 956 | .node_name = "ip4-not-enabled", |
Neale Ranns | 180279b | 2017-03-16 15:49:09 -0400 | [diff] [blame] | 957 | .runs_before = VNET_FEATURES ("ip4-lookup"), |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 958 | }; |
| 959 | |
Neale Ranns | 180279b | 2017-03-16 15:49:09 -0400 | [diff] [blame] | 960 | VNET_FEATURE_INIT (ip4_lookup, static) = |
| 961 | { |
| 962 | .arc_name = "ip4-unicast", |
| 963 | .node_name = "ip4-lookup", |
| 964 | .runs_before = 0, /* not before any other features */ |
| 965 | }; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 966 | |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 967 | /* Built-in ip4 multicast rx feature path definition */ |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 968 | VNET_FEATURE_ARC_INIT (ip4_multicast, static) = |
| 969 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 970 | .arc_name = "ip4-multicast", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 971 | .start_nodes = VNET_FEATURES ("ip4-input", "ip4-input-no-checksum"), |
Dave Barach | a25def7 | 2018-11-26 11:04:45 -0500 | [diff] [blame] | 972 | .last_in_arc = "ip4-mfib-forward-lookup", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 973 | .arc_index_ptr = &ip4_main.lookup_main.mcast_feature_arc_index, |
| 974 | }; |
| 975 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 976 | VNET_FEATURE_INIT (ip4_vpath_mc, static) = |
| 977 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 978 | .arc_name = "ip4-multicast", |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 979 | .node_name = "vpath-input-ip4", |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 980 | .runs_before = VNET_FEATURES ("ip4-mfib-forward-lookup"), |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 981 | }; |
| 982 | |
Neale Ranns | 8269d3d | 2018-01-30 09:02:20 -0800 | [diff] [blame] | 983 | VNET_FEATURE_INIT (ip4_mc_not_enabled, static) = |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 984 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 985 | .arc_name = "ip4-multicast", |
Neale Ranns | 8269d3d | 2018-01-30 09:02:20 -0800 | [diff] [blame] | 986 | .node_name = "ip4-not-enabled", |
Neale Ranns | 180279b | 2017-03-16 15:49:09 -0400 | [diff] [blame] | 987 | .runs_before = VNET_FEATURES ("ip4-mfib-forward-lookup"), |
| 988 | }; |
| 989 | |
| 990 | VNET_FEATURE_INIT (ip4_lookup_mc, static) = |
| 991 | { |
| 992 | .arc_name = "ip4-multicast", |
| 993 | .node_name = "ip4-mfib-forward-lookup", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 994 | .runs_before = 0, /* last feature */ |
Neale Ranns | 5e575b1 | 2016-10-03 09:40:25 +0100 | [diff] [blame] | 995 | }; |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 996 | |
| 997 | /* Source and port-range check ip4 tx feature path definition */ |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 998 | VNET_FEATURE_ARC_INIT (ip4_output, static) = |
| 999 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1000 | .arc_name = "ip4-output", |
Neale Ranns | f068c3e | 2018-01-03 04:18:48 -0800 | [diff] [blame] | 1001 | .start_nodes = VNET_FEATURES ("ip4-rewrite", "ip4-midchain", "ip4-dvr-dpo"), |
Dave Barach | a25def7 | 2018-11-26 11:04:45 -0500 | [diff] [blame] | 1002 | .last_in_arc = "interface-output", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1003 | .arc_index_ptr = &ip4_main.lookup_main.output_feature_arc_index, |
| 1004 | }; |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 1005 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1006 | VNET_FEATURE_INIT (ip4_source_and_port_range_check_tx, static) = |
| 1007 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1008 | .arc_name = "ip4-output", |
| 1009 | .node_name = "ip4-source-and-port-range-check-tx", |
Andrew Yourtchenko | 815d7d5 | 2018-02-07 11:37:02 +0100 | [diff] [blame] | 1010 | .runs_before = VNET_FEATURES ("ip4-outacl"), |
| 1011 | }; |
| 1012 | |
| 1013 | VNET_FEATURE_INIT (ip4_outacl, static) = |
| 1014 | { |
| 1015 | .arc_name = "ip4-output", |
| 1016 | .node_name = "ip4-outacl", |
Pierre Pfister | 057b356 | 2018-12-10 17:01:01 +0100 | [diff] [blame] | 1017 | .runs_before = VNET_FEATURES ("ipsec4-output-feature"), |
Matus Fabian | 08a6f01 | 2016-11-15 06:08:51 -0800 | [diff] [blame] | 1018 | }; |
| 1019 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1020 | VNET_FEATURE_INIT (ip4_ipsec_output, static) = |
| 1021 | { |
Matus Fabian | 08a6f01 | 2016-11-15 06:08:51 -0800 | [diff] [blame] | 1022 | .arc_name = "ip4-output", |
Pierre Pfister | 057b356 | 2018-12-10 17:01:01 +0100 | [diff] [blame] | 1023 | .node_name = "ipsec4-output-feature", |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1024 | .runs_before = VNET_FEATURES ("interface-output"), |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 1025 | }; |
| 1026 | |
| 1027 | /* Built-in ip4 tx feature path definition */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1028 | VNET_FEATURE_INIT (ip4_interface_output, static) = |
| 1029 | { |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1030 | .arc_name = "ip4-output", |
Dave Barach | 5331c72 | 2016-08-17 11:54:30 -0400 | [diff] [blame] | 1031 | .node_name = "interface-output", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1032 | .runs_before = 0, /* not before any other features */ |
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 | /* *INDENT-ON* */ |
Dave Barach | d653460 | 2016-06-14 18:38:02 -0400 | [diff] [blame] | 1035 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1036 | static clib_error_t * |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1037 | 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] | 1038 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1039 | ip4_main_t *im = &ip4_main; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1040 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1041 | /* Fill in lookup tables with default table (0). */ |
| 1042 | vec_validate (im->fib_index_by_sw_if_index, sw_if_index); |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 1043 | vec_validate (im->mfib_index_by_sw_if_index, sw_if_index); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1044 | |
Pavel Kotucek | 9f5a2b6 | 2017-06-14 13:56:55 +0200 | [diff] [blame] | 1045 | if (!is_add) |
| 1046 | { |
| 1047 | ip4_main_t *im4 = &ip4_main; |
| 1048 | ip_lookup_main_t *lm4 = &im4->lookup_main; |
| 1049 | ip_interface_address_t *ia = 0; |
| 1050 | ip4_address_t *address; |
| 1051 | vlib_main_t *vm = vlib_get_main (); |
| 1052 | |
Neale Ranns | 2ae2bc5 | 2018-03-16 03:22:39 -0700 | [diff] [blame] | 1053 | vnet_sw_interface_update_unnumbered (sw_if_index, ~0, 0); |
Pavel Kotucek | 9f5a2b6 | 2017-06-14 13:56:55 +0200 | [diff] [blame] | 1054 | /* *INDENT-OFF* */ |
Neale Ranns | 2ae2bc5 | 2018-03-16 03:22:39 -0700 | [diff] [blame] | 1055 | foreach_ip_interface_address (lm4, ia, sw_if_index, 0, |
Pavel Kotucek | 9f5a2b6 | 2017-06-14 13:56:55 +0200 | [diff] [blame] | 1056 | ({ |
| 1057 | address = ip_interface_address_get_address (lm4, ia); |
| 1058 | ip4_add_del_interface_address(vm, sw_if_index, address, ia->address_length, 1); |
| 1059 | })); |
| 1060 | /* *INDENT-ON* */ |
| 1061 | } |
| 1062 | |
Neale Ranns | 8269d3d | 2018-01-30 09:02:20 -0800 | [diff] [blame] | 1063 | vnet_feature_enable_disable ("ip4-unicast", "ip4-not-enabled", sw_if_index, |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1064 | is_add, 0, 0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1065 | |
Neale Ranns | 8269d3d | 2018-01-30 09:02:20 -0800 | [diff] [blame] | 1066 | vnet_feature_enable_disable ("ip4-multicast", "ip4-not-enabled", |
| 1067 | sw_if_index, is_add, 0, 0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1068 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1069 | return /* no error */ 0; |
| 1070 | } |
| 1071 | |
| 1072 | VNET_SW_INTERFACE_ADD_DEL_FUNCTION (ip4_sw_interface_add_del); |
| 1073 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1074 | /* Global IP4 main. */ |
Benoît Ganne | 47727c0 | 2019-02-12 13:35:08 +0100 | [diff] [blame] | 1075 | #ifndef CLIB_MARCH_VARIANT |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1076 | ip4_main_t ip4_main; |
Benoît Ganne | 47727c0 | 2019-02-12 13:35:08 +0100 | [diff] [blame] | 1077 | #endif /* CLIB_MARCH_VARIANT */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1078 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1079 | static clib_error_t * |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1080 | ip4_lookup_init (vlib_main_t * vm) |
| 1081 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1082 | ip4_main_t *im = &ip4_main; |
| 1083 | clib_error_t *error; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1084 | uword i; |
| 1085 | |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1086 | if ((error = vlib_call_init_function (vm, vnet_feature_init))) |
| 1087 | return error; |
Neale Ranns | 1ec3652 | 2017-11-29 05:20:37 -0800 | [diff] [blame] | 1088 | if ((error = vlib_call_init_function (vm, ip4_mtrie_module_init))) |
| 1089 | return (error); |
| 1090 | if ((error = vlib_call_init_function (vm, fib_module_init))) |
| 1091 | return error; |
| 1092 | if ((error = vlib_call_init_function (vm, mfib_module_init))) |
| 1093 | return error; |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 1094 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1095 | for (i = 0; i < ARRAY_LEN (im->fib_masks); i++) |
| 1096 | { |
| 1097 | u32 m; |
| 1098 | |
| 1099 | if (i < 32) |
| 1100 | m = pow2_mask (i) << (32 - i); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 1101 | else |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1102 | m = ~0; |
| 1103 | im->fib_masks[i] = clib_host_to_net_u32 (m); |
| 1104 | } |
| 1105 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1106 | ip_lookup_init (&im->lookup_main, /* is_ip6 */ 0); |
| 1107 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1108 | /* Create FIB with index 0 and table id of 0. */ |
Neale Ranns | 1500254 | 2017-09-10 04:39:11 -0700 | [diff] [blame] | 1109 | fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, 0, |
| 1110 | FIB_SOURCE_DEFAULT_ROUTE); |
| 1111 | mfib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, 0, |
| 1112 | MFIB_SOURCE_DEFAULT_ROUTE); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1113 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1114 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1115 | pg_node_t *pn; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1116 | pn = pg_get_node (ip4_lookup_node.index); |
| 1117 | pn->unformat_edit = unformat_pg_ip4_header; |
| 1118 | } |
| 1119 | |
| 1120 | { |
| 1121 | ethernet_arp_header_t h; |
| 1122 | |
Dave Barach | b7b9299 | 2018-10-17 10:38:51 -0400 | [diff] [blame] | 1123 | clib_memset (&h, 0, sizeof (h)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1124 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1125 | #define _16(f,v) h.f = clib_host_to_net_u16 (v); |
| 1126 | #define _8(f,v) h.f = v; |
| 1127 | _16 (l2_type, ETHERNET_ARP_HARDWARE_TYPE_ethernet); |
| 1128 | _16 (l3_type, ETHERNET_TYPE_IP4); |
| 1129 | _8 (n_l2_address_bytes, 6); |
| 1130 | _8 (n_l3_address_bytes, 4); |
| 1131 | _16 (opcode, ETHERNET_ARP_OPCODE_request); |
| 1132 | #undef _16 |
| 1133 | #undef _8 |
| 1134 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1135 | vlib_packet_template_init (vm, &im->ip4_arp_request_packet_template, |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1136 | /* data */ &h, |
| 1137 | sizeof (h), |
| 1138 | /* alloc chunk size */ 8, |
| 1139 | "ip4 arp"); |
| 1140 | } |
| 1141 | |
Dave Barach | 203c632 | 2016-06-26 10:29:03 -0400 | [diff] [blame] | 1142 | return error; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1143 | } |
| 1144 | |
| 1145 | VLIB_INIT_FUNCTION (ip4_lookup_init); |
| 1146 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1147 | typedef struct |
| 1148 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1149 | /* Adjacency taken. */ |
Vengada Govindan | f154448 | 2016-09-28 02:45:57 -0700 | [diff] [blame] | 1150 | u32 dpo_index; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1151 | u32 flow_hash; |
| 1152 | u32 fib_index; |
| 1153 | |
| 1154 | /* Packet data, possibly *after* rewrite. */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1155 | u8 packet_data[64 - 1 * sizeof (u32)]; |
| 1156 | } |
| 1157 | ip4_forward_next_trace_t; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1158 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1159 | #ifndef CLIB_MARCH_VARIANT |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1160 | u8 * |
| 1161 | format_ip4_forward_next_trace (u8 * s, va_list * args) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1162 | { |
| 1163 | CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); |
| 1164 | CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1165 | 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] | 1166 | u32 indent = format_get_indent (s); |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1167 | s = format (s, "%U%U", |
John Lo | ac8146c | 2016-09-27 17:44:02 -0400 | [diff] [blame] | 1168 | format_white_space, indent, |
| 1169 | format_ip4_header, t->packet_data, sizeof (t->packet_data)); |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1170 | return s; |
| 1171 | } |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1172 | #endif |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1173 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1174 | static u8 * |
| 1175 | format_ip4_lookup_trace (u8 * s, va_list * args) |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1176 | { |
| 1177 | CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); |
| 1178 | CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1179 | 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] | 1180 | u32 indent = format_get_indent (s); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1181 | |
John Lo | ac8146c | 2016-09-27 17:44:02 -0400 | [diff] [blame] | 1182 | s = format (s, "fib %d dpo-idx %d flow hash: 0x%08x", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1183 | t->fib_index, t->dpo_index, t->flow_hash); |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1184 | s = format (s, "\n%U%U", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1185 | format_white_space, indent, |
| 1186 | format_ip4_header, t->packet_data, sizeof (t->packet_data)); |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1187 | return s; |
| 1188 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1189 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1190 | static u8 * |
| 1191 | format_ip4_rewrite_trace (u8 * s, va_list * args) |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1192 | { |
| 1193 | CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); |
| 1194 | CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1195 | 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] | 1196 | u32 indent = format_get_indent (s); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1197 | |
Vengada Govindan | f154448 | 2016-09-28 02:45:57 -0700 | [diff] [blame] | 1198 | 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] | 1199 | t->fib_index, t->dpo_index, format_ip_adjacency, |
| 1200 | t->dpo_index, FORMAT_IP_ADJACENCY_NONE, t->flow_hash); |
Pierre Pfister | a38c3df | 2016-06-13 10:28:09 +0100 | [diff] [blame] | 1201 | s = format (s, "\n%U%U", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1202 | format_white_space, indent, |
| 1203 | format_ip_adjacency_packet_data, |
Neale Ranns | b069a69 | 2017-03-15 12:34:25 -0400 | [diff] [blame] | 1204 | t->dpo_index, t->packet_data, sizeof (t->packet_data)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1205 | return s; |
| 1206 | } |
| 1207 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1208 | #ifndef CLIB_MARCH_VARIANT |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1209 | /* Common trace function for all ip4-forward next nodes. */ |
| 1210 | void |
| 1211 | ip4_forward_next_trace (vlib_main_t * vm, |
| 1212 | vlib_node_runtime_t * node, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1213 | vlib_frame_t * frame, vlib_rx_or_tx_t which_adj_index) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1214 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1215 | u32 *from, n_left; |
| 1216 | ip4_main_t *im = &ip4_main; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1217 | |
| 1218 | n_left = frame->n_vectors; |
| 1219 | from = vlib_frame_vector_args (frame); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 1220 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1221 | while (n_left >= 4) |
| 1222 | { |
| 1223 | u32 bi0, bi1; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1224 | vlib_buffer_t *b0, *b1; |
| 1225 | ip4_forward_next_trace_t *t0, *t1; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1226 | |
| 1227 | /* Prefetch next iteration. */ |
| 1228 | vlib_prefetch_buffer_with_index (vm, from[2], LOAD); |
| 1229 | vlib_prefetch_buffer_with_index (vm, from[3], LOAD); |
| 1230 | |
| 1231 | bi0 = from[0]; |
| 1232 | bi1 = from[1]; |
| 1233 | |
| 1234 | b0 = vlib_get_buffer (vm, bi0); |
| 1235 | b1 = vlib_get_buffer (vm, bi1); |
| 1236 | |
| 1237 | if (b0->flags & VLIB_BUFFER_IS_TRACED) |
| 1238 | { |
| 1239 | t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0])); |
Vengada Govindan | f154448 | 2016-09-28 02:45:57 -0700 | [diff] [blame] | 1240 | t0->dpo_index = vnet_buffer (b0)->ip.adj_index[which_adj_index]; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1241 | t0->flow_hash = vnet_buffer (b0)->ip.flow_hash; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1242 | t0->fib_index = |
| 1243 | (vnet_buffer (b0)->sw_if_index[VLIB_TX] != |
| 1244 | (u32) ~ 0) ? vnet_buffer (b0)->sw_if_index[VLIB_TX] : |
| 1245 | vec_elt (im->fib_index_by_sw_if_index, |
| 1246 | vnet_buffer (b0)->sw_if_index[VLIB_RX]); |
Pierre Pfister | 0febaf1 | 2016-06-08 12:23:21 +0100 | [diff] [blame] | 1247 | |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 1248 | clib_memcpy_fast (t0->packet_data, |
| 1249 | vlib_buffer_get_current (b0), |
| 1250 | sizeof (t0->packet_data)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1251 | } |
| 1252 | if (b1->flags & VLIB_BUFFER_IS_TRACED) |
| 1253 | { |
| 1254 | t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0])); |
Vengada Govindan | f154448 | 2016-09-28 02:45:57 -0700 | [diff] [blame] | 1255 | t1->dpo_index = vnet_buffer (b1)->ip.adj_index[which_adj_index]; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1256 | t1->flow_hash = vnet_buffer (b1)->ip.flow_hash; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1257 | t1->fib_index = |
| 1258 | (vnet_buffer (b1)->sw_if_index[VLIB_TX] != |
| 1259 | (u32) ~ 0) ? vnet_buffer (b1)->sw_if_index[VLIB_TX] : |
| 1260 | vec_elt (im->fib_index_by_sw_if_index, |
| 1261 | vnet_buffer (b1)->sw_if_index[VLIB_RX]); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 1262 | clib_memcpy_fast (t1->packet_data, vlib_buffer_get_current (b1), |
| 1263 | sizeof (t1->packet_data)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1264 | } |
| 1265 | from += 2; |
| 1266 | n_left -= 2; |
| 1267 | } |
| 1268 | |
| 1269 | while (n_left >= 1) |
| 1270 | { |
| 1271 | u32 bi0; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1272 | vlib_buffer_t *b0; |
| 1273 | ip4_forward_next_trace_t *t0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1274 | |
| 1275 | bi0 = from[0]; |
| 1276 | |
| 1277 | b0 = vlib_get_buffer (vm, bi0); |
| 1278 | |
| 1279 | if (b0->flags & VLIB_BUFFER_IS_TRACED) |
| 1280 | { |
| 1281 | t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0])); |
Vengada Govindan | f154448 | 2016-09-28 02:45:57 -0700 | [diff] [blame] | 1282 | t0->dpo_index = vnet_buffer (b0)->ip.adj_index[which_adj_index]; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1283 | t0->flow_hash = vnet_buffer (b0)->ip.flow_hash; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1284 | t0->fib_index = |
| 1285 | (vnet_buffer (b0)->sw_if_index[VLIB_TX] != |
| 1286 | (u32) ~ 0) ? vnet_buffer (b0)->sw_if_index[VLIB_TX] : |
| 1287 | vec_elt (im->fib_index_by_sw_if_index, |
| 1288 | vnet_buffer (b0)->sw_if_index[VLIB_RX]); |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 1289 | clib_memcpy_fast (t0->packet_data, vlib_buffer_get_current (b0), |
| 1290 | sizeof (t0->packet_data)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1291 | } |
| 1292 | from += 1; |
| 1293 | n_left -= 1; |
| 1294 | } |
| 1295 | } |
| 1296 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1297 | /* Compute TCP/UDP/ICMP4 checksum in software. */ |
| 1298 | u16 |
| 1299 | ip4_tcp_udp_compute_checksum (vlib_main_t * vm, vlib_buffer_t * p0, |
| 1300 | ip4_header_t * ip0) |
| 1301 | { |
| 1302 | ip_csum_t sum0; |
| 1303 | u32 ip_header_length, payload_length_host_byte_order; |
Florin Coras | b2215d6 | 2017-08-01 16:56:58 -0700 | [diff] [blame] | 1304 | u32 n_this_buffer, n_bytes_left, n_ip_bytes_this_buffer; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1305 | u16 sum16; |
Dave Barach | c4abafd | 2019-09-04 12:09:32 -0400 | [diff] [blame^] | 1306 | u8 *data_this_buffer; |
| 1307 | u8 length_odd; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 1308 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1309 | /* Initialize checksum with ip header. */ |
| 1310 | ip_header_length = ip4_header_bytes (ip0); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1311 | payload_length_host_byte_order = |
| 1312 | clib_net_to_host_u16 (ip0->length) - ip_header_length; |
| 1313 | sum0 = |
| 1314 | clib_host_to_net_u32 (payload_length_host_byte_order + |
| 1315 | (ip0->protocol << 16)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1316 | |
| 1317 | if (BITS (uword) == 32) |
| 1318 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1319 | sum0 = |
| 1320 | ip_csum_with_carry (sum0, |
| 1321 | clib_mem_unaligned (&ip0->src_address, u32)); |
| 1322 | sum0 = |
| 1323 | ip_csum_with_carry (sum0, |
| 1324 | clib_mem_unaligned (&ip0->dst_address, u32)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1325 | } |
| 1326 | else |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1327 | sum0 = |
| 1328 | ip_csum_with_carry (sum0, clib_mem_unaligned (&ip0->src_address, u64)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1329 | |
| 1330 | n_bytes_left = n_this_buffer = payload_length_host_byte_order; |
Dave Barach | c4abafd | 2019-09-04 12:09:32 -0400 | [diff] [blame^] | 1331 | data_this_buffer = (u8 *) ip0 + ip_header_length; |
Neale Ranns | d91c1db | 2017-07-31 02:30:50 -0700 | [diff] [blame] | 1332 | n_ip_bytes_this_buffer = |
| 1333 | p0->current_length - (((u8 *) ip0 - p0->data) - p0->current_data); |
Florin Coras | b2215d6 | 2017-08-01 16:56:58 -0700 | [diff] [blame] | 1334 | if (n_this_buffer + ip_header_length > n_ip_bytes_this_buffer) |
| 1335 | { |
| 1336 | n_this_buffer = n_ip_bytes_this_buffer > ip_header_length ? |
Neale Ranns | d91c1db | 2017-07-31 02:30:50 -0700 | [diff] [blame] | 1337 | n_ip_bytes_this_buffer - ip_header_length : 0; |
Florin Coras | b2215d6 | 2017-08-01 16:56:58 -0700 | [diff] [blame] | 1338 | } |
Dave Barach | c4abafd | 2019-09-04 12:09:32 -0400 | [diff] [blame^] | 1339 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1340 | while (1) |
| 1341 | { |
| 1342 | sum0 = ip_incremental_checksum (sum0, data_this_buffer, n_this_buffer); |
| 1343 | n_bytes_left -= n_this_buffer; |
| 1344 | if (n_bytes_left == 0) |
| 1345 | break; |
| 1346 | |
| 1347 | ASSERT (p0->flags & VLIB_BUFFER_NEXT_PRESENT); |
John Lo | 3bc6bc2 | 2019-08-03 14:36:39 -0400 | [diff] [blame] | 1348 | if (!(p0->flags & VLIB_BUFFER_NEXT_PRESENT)) |
| 1349 | return 0xfefe; |
| 1350 | |
Dave Barach | c4abafd | 2019-09-04 12:09:32 -0400 | [diff] [blame^] | 1351 | length_odd = (n_this_buffer & 1); |
| 1352 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1353 | p0 = vlib_get_buffer (vm, p0->next_buffer); |
| 1354 | data_this_buffer = vlib_buffer_get_current (p0); |
John Lo | 1cf0007 | 2019-04-09 10:23:56 -0400 | [diff] [blame] | 1355 | n_this_buffer = clib_min (p0->current_length, n_bytes_left); |
Dave Barach | c4abafd | 2019-09-04 12:09:32 -0400 | [diff] [blame^] | 1356 | |
| 1357 | if (PREDICT_FALSE (length_odd)) |
| 1358 | { |
| 1359 | /* Prepend a 0 or the resulting checksum will be incorrect. */ |
| 1360 | data_this_buffer--; |
| 1361 | n_this_buffer++; |
| 1362 | n_bytes_left++; |
| 1363 | data_this_buffer[0] = 0; |
| 1364 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1365 | } |
| 1366 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1367 | sum16 = ~ip_csum_fold (sum0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1368 | return sum16; |
| 1369 | } |
| 1370 | |
John Lo | 37682e1 | 2016-11-30 12:51:39 -0500 | [diff] [blame] | 1371 | u32 |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1372 | ip4_tcp_udp_validate_checksum (vlib_main_t * vm, vlib_buffer_t * p0) |
| 1373 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1374 | ip4_header_t *ip0 = vlib_buffer_get_current (p0); |
| 1375 | udp_header_t *udp0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1376 | u16 sum16; |
| 1377 | |
| 1378 | ASSERT (ip0->protocol == IP_PROTOCOL_TCP |
| 1379 | || ip0->protocol == IP_PROTOCOL_UDP); |
| 1380 | |
| 1381 | udp0 = (void *) (ip0 + 1); |
| 1382 | if (ip0->protocol == IP_PROTOCOL_UDP && udp0->checksum == 0) |
| 1383 | { |
Damjan Marion | 213b5aa | 2017-07-13 21:19:27 +0200 | [diff] [blame] | 1384 | p0->flags |= (VNET_BUFFER_F_L4_CHECKSUM_COMPUTED |
| 1385 | | VNET_BUFFER_F_L4_CHECKSUM_CORRECT); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1386 | return p0->flags; |
| 1387 | } |
| 1388 | |
| 1389 | sum16 = ip4_tcp_udp_compute_checksum (vm, p0, ip0); |
| 1390 | |
Damjan Marion | 213b5aa | 2017-07-13 21:19:27 +0200 | [diff] [blame] | 1391 | p0->flags |= (VNET_BUFFER_F_L4_CHECKSUM_COMPUTED |
| 1392 | | ((sum16 == 0) << VNET_BUFFER_F_LOG2_L4_CHECKSUM_CORRECT)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1393 | |
| 1394 | return p0->flags; |
| 1395 | } |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1396 | #endif |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1397 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1398 | /* *INDENT-OFF* */ |
| 1399 | VNET_FEATURE_ARC_INIT (ip4_local) = |
| 1400 | { |
| 1401 | .arc_name = "ip4-local", |
| 1402 | .start_nodes = VNET_FEATURES ("ip4-local"), |
Dave Barach | a25def7 | 2018-11-26 11:04:45 -0500 | [diff] [blame] | 1403 | .last_in_arc = "ip4-local-end-of-arc", |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1404 | }; |
| 1405 | /* *INDENT-ON* */ |
| 1406 | |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1407 | static inline void |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1408 | ip4_local_l4_csum_validate (vlib_main_t * vm, vlib_buffer_t * p, |
| 1409 | ip4_header_t * ip, u8 is_udp, u8 * error, |
| 1410 | u8 * good_tcp_udp) |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1411 | { |
| 1412 | u32 flags0; |
| 1413 | flags0 = ip4_tcp_udp_validate_checksum (vm, p); |
| 1414 | *good_tcp_udp = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0; |
| 1415 | if (is_udp) |
| 1416 | { |
| 1417 | udp_header_t *udp; |
| 1418 | u32 ip_len, udp_len; |
| 1419 | i32 len_diff; |
| 1420 | udp = ip4_next_header (ip); |
| 1421 | /* Verify UDP length. */ |
| 1422 | ip_len = clib_net_to_host_u16 (ip->length); |
| 1423 | udp_len = clib_net_to_host_u16 (udp->length); |
| 1424 | |
| 1425 | len_diff = ip_len - udp_len; |
| 1426 | *good_tcp_udp &= len_diff >= 0; |
| 1427 | *error = len_diff < 0 ? IP4_ERROR_UDP_LENGTH : *error; |
| 1428 | } |
| 1429 | } |
| 1430 | |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1431 | #define ip4_local_csum_is_offloaded(_b) \ |
| 1432 | _b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM \ |
| 1433 | || _b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM |
| 1434 | |
| 1435 | #define ip4_local_need_csum_check(is_tcp_udp, _b) \ |
| 1436 | (is_tcp_udp && !(_b->flags & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED \ |
| 1437 | || ip4_local_csum_is_offloaded (_b))) |
| 1438 | |
| 1439 | #define ip4_local_csum_is_valid(_b) \ |
| 1440 | (_b->flags & VNET_BUFFER_F_L4_CHECKSUM_CORRECT \ |
| 1441 | || (ip4_local_csum_is_offloaded (_b))) != 0 |
| 1442 | |
| 1443 | static inline void |
| 1444 | ip4_local_check_l4_csum (vlib_main_t * vm, vlib_buffer_t * b, |
| 1445 | ip4_header_t * ih, u8 * error) |
| 1446 | { |
| 1447 | u8 is_udp, is_tcp_udp, good_tcp_udp; |
| 1448 | |
| 1449 | is_udp = ih->protocol == IP_PROTOCOL_UDP; |
| 1450 | is_tcp_udp = is_udp || ih->protocol == IP_PROTOCOL_TCP; |
| 1451 | |
| 1452 | if (PREDICT_FALSE (ip4_local_need_csum_check (is_tcp_udp, b))) |
| 1453 | ip4_local_l4_csum_validate (vm, b, ih, is_udp, error, &good_tcp_udp); |
| 1454 | else |
| 1455 | good_tcp_udp = ip4_local_csum_is_valid (b); |
| 1456 | |
| 1457 | ASSERT (IP4_ERROR_TCP_CHECKSUM + 1 == IP4_ERROR_UDP_CHECKSUM); |
| 1458 | *error = (is_tcp_udp && !good_tcp_udp |
| 1459 | ? IP4_ERROR_TCP_CHECKSUM + is_udp : *error); |
| 1460 | } |
| 1461 | |
| 1462 | static inline void |
| 1463 | ip4_local_check_l4_csum_x2 (vlib_main_t * vm, vlib_buffer_t ** b, |
| 1464 | ip4_header_t ** ih, u8 * error) |
| 1465 | { |
| 1466 | u8 is_udp[2], is_tcp_udp[2], good_tcp_udp[2]; |
| 1467 | |
| 1468 | is_udp[0] = ih[0]->protocol == IP_PROTOCOL_UDP; |
| 1469 | is_udp[1] = ih[1]->protocol == IP_PROTOCOL_UDP; |
| 1470 | |
| 1471 | is_tcp_udp[0] = is_udp[0] || ih[0]->protocol == IP_PROTOCOL_TCP; |
| 1472 | is_tcp_udp[1] = is_udp[1] || ih[1]->protocol == IP_PROTOCOL_TCP; |
| 1473 | |
| 1474 | good_tcp_udp[0] = ip4_local_csum_is_valid (b[0]); |
| 1475 | good_tcp_udp[1] = ip4_local_csum_is_valid (b[1]); |
| 1476 | |
| 1477 | if (PREDICT_FALSE (ip4_local_need_csum_check (is_tcp_udp[0], b[0]) |
| 1478 | || ip4_local_need_csum_check (is_tcp_udp[1], b[1]))) |
| 1479 | { |
| 1480 | if (is_tcp_udp[0]) |
| 1481 | ip4_local_l4_csum_validate (vm, b[0], ih[0], is_udp[0], &error[0], |
| 1482 | &good_tcp_udp[0]); |
| 1483 | if (is_tcp_udp[1]) |
| 1484 | ip4_local_l4_csum_validate (vm, b[1], ih[1], is_udp[1], &error[1], |
| 1485 | &good_tcp_udp[1]); |
| 1486 | } |
| 1487 | |
| 1488 | error[0] = (is_tcp_udp[0] && !good_tcp_udp[0] ? |
| 1489 | IP4_ERROR_TCP_CHECKSUM + is_udp[0] : error[0]); |
| 1490 | error[1] = (is_tcp_udp[1] && !good_tcp_udp[1] ? |
| 1491 | IP4_ERROR_TCP_CHECKSUM + is_udp[1] : error[1]); |
| 1492 | } |
| 1493 | |
| 1494 | static inline void |
| 1495 | ip4_local_set_next_and_error (vlib_node_runtime_t * error_node, |
| 1496 | vlib_buffer_t * b, u16 * next, u8 error, |
| 1497 | u8 head_of_feature_arc) |
| 1498 | { |
| 1499 | u8 arc_index = vnet_feat_arc_ip4_local.feature_arc_index; |
| 1500 | u32 next_index; |
| 1501 | |
| 1502 | *next = error != IP4_ERROR_UNKNOWN_PROTOCOL ? IP_LOCAL_NEXT_DROP : *next; |
| 1503 | b->error = error ? error_node->errors[error] : 0; |
| 1504 | if (head_of_feature_arc) |
| 1505 | { |
| 1506 | next_index = *next; |
| 1507 | if (PREDICT_TRUE (error == (u8) IP4_ERROR_UNKNOWN_PROTOCOL)) |
| 1508 | { |
| 1509 | vnet_feature_arc_start (arc_index, |
| 1510 | vnet_buffer (b)->sw_if_index[VLIB_RX], |
| 1511 | &next_index, b); |
| 1512 | *next = next_index; |
| 1513 | } |
| 1514 | } |
| 1515 | } |
| 1516 | |
| 1517 | typedef struct |
| 1518 | { |
| 1519 | ip4_address_t src; |
| 1520 | u32 lbi; |
| 1521 | u8 error; |
Neale Ranns | be2286b | 2018-12-09 12:54:51 -0800 | [diff] [blame] | 1522 | u8 first; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1523 | } ip4_local_last_check_t; |
| 1524 | |
| 1525 | static inline void |
| 1526 | ip4_local_check_src (vlib_buffer_t * b, ip4_header_t * ip0, |
| 1527 | ip4_local_last_check_t * last_check, u8 * error0) |
| 1528 | { |
| 1529 | ip4_fib_mtrie_leaf_t leaf0; |
| 1530 | ip4_fib_mtrie_t *mtrie0; |
| 1531 | const dpo_id_t *dpo0; |
| 1532 | load_balance_t *lb0; |
| 1533 | u32 lbi0; |
| 1534 | |
| 1535 | vnet_buffer (b)->ip.fib_index = |
| 1536 | vnet_buffer (b)->sw_if_index[VLIB_TX] != ~0 ? |
| 1537 | vnet_buffer (b)->sw_if_index[VLIB_TX] : vnet_buffer (b)->ip.fib_index; |
| 1538 | |
Matthew Smith | 44e6046 | 2019-07-06 19:27:29 -0500 | [diff] [blame] | 1539 | /* |
| 1540 | * vnet_buffer()->ip.adj_index[VLIB_RX] will be set to the index of the |
| 1541 | * adjacency for the destination address (the local interface address). |
| 1542 | * vnet_buffer()->ip.adj_index[VLIB_TX] will be set to the index of the |
| 1543 | * adjacency for the source address (the remote sender's address) |
| 1544 | */ |
Neale Ranns | be2286b | 2018-12-09 12:54:51 -0800 | [diff] [blame] | 1545 | if (PREDICT_FALSE (last_check->first || |
| 1546 | (last_check->src.as_u32 != ip0->src_address.as_u32))) |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1547 | { |
| 1548 | mtrie0 = &ip4_fib_get (vnet_buffer (b)->ip.fib_index)->mtrie; |
| 1549 | leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, &ip0->src_address); |
| 1550 | leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, 2); |
| 1551 | leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, &ip0->src_address, 3); |
| 1552 | lbi0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0); |
| 1553 | |
Matthew Smith | 44e6046 | 2019-07-06 19:27:29 -0500 | [diff] [blame] | 1554 | vnet_buffer (b)->ip.adj_index[VLIB_RX] = |
| 1555 | vnet_buffer (b)->ip.adj_index[VLIB_TX]; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1556 | vnet_buffer (b)->ip.adj_index[VLIB_TX] = lbi0; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1557 | |
| 1558 | lb0 = load_balance_get (lbi0); |
| 1559 | dpo0 = load_balance_get_bucket_i (lb0, 0); |
| 1560 | |
| 1561 | /* |
| 1562 | * Must have a route to source otherwise we drop the packet. |
| 1563 | * ip4 broadcasts are accepted, e.g. to make dhcp client work |
| 1564 | * |
| 1565 | * The checks are: |
| 1566 | * - the source is a recieve => it's from us => bogus, do this |
| 1567 | * first since it sets a different error code. |
| 1568 | * - uRPF check for any route to source - accept if passes. |
| 1569 | * - allow packets destined to the broadcast address from unknown sources |
| 1570 | */ |
| 1571 | |
| 1572 | *error0 = ((*error0 == IP4_ERROR_UNKNOWN_PROTOCOL |
| 1573 | && dpo0->dpoi_type == DPO_RECEIVE) ? |
| 1574 | IP4_ERROR_SPOOFED_LOCAL_PACKETS : *error0); |
| 1575 | *error0 = ((*error0 == IP4_ERROR_UNKNOWN_PROTOCOL |
| 1576 | && !fib_urpf_check_size (lb0->lb_urpf) |
| 1577 | && ip0->dst_address.as_u32 != 0xFFFFFFFF) ? |
| 1578 | IP4_ERROR_SRC_LOOKUP_MISS : *error0); |
| 1579 | |
| 1580 | last_check->src.as_u32 = ip0->src_address.as_u32; |
| 1581 | last_check->lbi = lbi0; |
| 1582 | last_check->error = *error0; |
| 1583 | } |
| 1584 | else |
| 1585 | { |
Matthew Smith | 44e6046 | 2019-07-06 19:27:29 -0500 | [diff] [blame] | 1586 | vnet_buffer (b)->ip.adj_index[VLIB_RX] = |
| 1587 | vnet_buffer (b)->ip.adj_index[VLIB_TX]; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1588 | vnet_buffer (b)->ip.adj_index[VLIB_TX] = last_check->lbi; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1589 | *error0 = last_check->error; |
Neale Ranns | be2286b | 2018-12-09 12:54:51 -0800 | [diff] [blame] | 1590 | last_check->first = 0; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1591 | } |
| 1592 | } |
| 1593 | |
| 1594 | static inline void |
| 1595 | ip4_local_check_src_x2 (vlib_buffer_t ** b, ip4_header_t ** ip, |
| 1596 | ip4_local_last_check_t * last_check, u8 * error) |
| 1597 | { |
| 1598 | ip4_fib_mtrie_leaf_t leaf[2]; |
| 1599 | ip4_fib_mtrie_t *mtrie[2]; |
| 1600 | const dpo_id_t *dpo[2]; |
| 1601 | load_balance_t *lb[2]; |
Neale Ranns | be2286b | 2018-12-09 12:54:51 -0800 | [diff] [blame] | 1602 | u32 not_last_hit; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1603 | u32 lbi[2]; |
| 1604 | |
Neale Ranns | be2286b | 2018-12-09 12:54:51 -0800 | [diff] [blame] | 1605 | not_last_hit = last_check->first; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1606 | not_last_hit |= ip[0]->src_address.as_u32 ^ last_check->src.as_u32; |
| 1607 | not_last_hit |= ip[1]->src_address.as_u32 ^ last_check->src.as_u32; |
| 1608 | |
| 1609 | vnet_buffer (b[0])->ip.fib_index = |
| 1610 | vnet_buffer (b[0])->sw_if_index[VLIB_TX] != ~0 ? |
| 1611 | vnet_buffer (b[0])->sw_if_index[VLIB_TX] : |
| 1612 | vnet_buffer (b[0])->ip.fib_index; |
| 1613 | |
| 1614 | vnet_buffer (b[1])->ip.fib_index = |
| 1615 | vnet_buffer (b[1])->sw_if_index[VLIB_TX] != ~0 ? |
| 1616 | vnet_buffer (b[1])->sw_if_index[VLIB_TX] : |
| 1617 | vnet_buffer (b[1])->ip.fib_index; |
| 1618 | |
Matthew Smith | 44e6046 | 2019-07-06 19:27:29 -0500 | [diff] [blame] | 1619 | /* |
| 1620 | * vnet_buffer()->ip.adj_index[VLIB_RX] will be set to the index of the |
| 1621 | * adjacency for the destination address (the local interface address). |
| 1622 | * vnet_buffer()->ip.adj_index[VLIB_TX] will be set to the index of the |
| 1623 | * adjacency for the source address (the remote sender's address) |
| 1624 | */ |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1625 | if (PREDICT_FALSE (not_last_hit)) |
| 1626 | { |
| 1627 | mtrie[0] = &ip4_fib_get (vnet_buffer (b[0])->ip.fib_index)->mtrie; |
| 1628 | mtrie[1] = &ip4_fib_get (vnet_buffer (b[1])->ip.fib_index)->mtrie; |
| 1629 | |
| 1630 | leaf[0] = ip4_fib_mtrie_lookup_step_one (mtrie[0], &ip[0]->src_address); |
| 1631 | leaf[1] = ip4_fib_mtrie_lookup_step_one (mtrie[1], &ip[1]->src_address); |
| 1632 | |
| 1633 | leaf[0] = ip4_fib_mtrie_lookup_step (mtrie[0], leaf[0], |
| 1634 | &ip[0]->src_address, 2); |
| 1635 | leaf[1] = ip4_fib_mtrie_lookup_step (mtrie[1], leaf[1], |
| 1636 | &ip[1]->src_address, 2); |
| 1637 | |
| 1638 | leaf[0] = ip4_fib_mtrie_lookup_step (mtrie[0], leaf[0], |
| 1639 | &ip[0]->src_address, 3); |
| 1640 | leaf[1] = ip4_fib_mtrie_lookup_step (mtrie[1], leaf[1], |
| 1641 | &ip[1]->src_address, 3); |
| 1642 | |
| 1643 | lbi[0] = ip4_fib_mtrie_leaf_get_adj_index (leaf[0]); |
| 1644 | lbi[1] = ip4_fib_mtrie_leaf_get_adj_index (leaf[1]); |
| 1645 | |
Matthew Smith | 44e6046 | 2019-07-06 19:27:29 -0500 | [diff] [blame] | 1646 | vnet_buffer (b[0])->ip.adj_index[VLIB_RX] = |
| 1647 | vnet_buffer (b[0])->ip.adj_index[VLIB_TX]; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1648 | vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = lbi[0]; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1649 | |
Matthew Smith | 44e6046 | 2019-07-06 19:27:29 -0500 | [diff] [blame] | 1650 | vnet_buffer (b[1])->ip.adj_index[VLIB_RX] = |
| 1651 | vnet_buffer (b[1])->ip.adj_index[VLIB_TX]; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1652 | vnet_buffer (b[1])->ip.adj_index[VLIB_TX] = lbi[1]; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1653 | |
| 1654 | lb[0] = load_balance_get (lbi[0]); |
| 1655 | lb[1] = load_balance_get (lbi[1]); |
| 1656 | |
| 1657 | dpo[0] = load_balance_get_bucket_i (lb[0], 0); |
| 1658 | dpo[1] = load_balance_get_bucket_i (lb[1], 0); |
| 1659 | |
| 1660 | error[0] = ((error[0] == IP4_ERROR_UNKNOWN_PROTOCOL && |
| 1661 | dpo[0]->dpoi_type == DPO_RECEIVE) ? |
| 1662 | IP4_ERROR_SPOOFED_LOCAL_PACKETS : error[0]); |
| 1663 | error[0] = ((error[0] == IP4_ERROR_UNKNOWN_PROTOCOL && |
| 1664 | !fib_urpf_check_size (lb[0]->lb_urpf) && |
| 1665 | ip[0]->dst_address.as_u32 != 0xFFFFFFFF) |
| 1666 | ? IP4_ERROR_SRC_LOOKUP_MISS : error[0]); |
| 1667 | |
| 1668 | error[1] = ((error[1] == IP4_ERROR_UNKNOWN_PROTOCOL && |
| 1669 | dpo[1]->dpoi_type == DPO_RECEIVE) ? |
| 1670 | IP4_ERROR_SPOOFED_LOCAL_PACKETS : error[1]); |
| 1671 | error[1] = ((error[1] == IP4_ERROR_UNKNOWN_PROTOCOL && |
| 1672 | !fib_urpf_check_size (lb[1]->lb_urpf) && |
| 1673 | ip[1]->dst_address.as_u32 != 0xFFFFFFFF) |
| 1674 | ? IP4_ERROR_SRC_LOOKUP_MISS : error[1]); |
| 1675 | |
| 1676 | last_check->src.as_u32 = ip[1]->src_address.as_u32; |
| 1677 | last_check->lbi = lbi[1]; |
| 1678 | last_check->error = error[1]; |
| 1679 | } |
| 1680 | else |
| 1681 | { |
Matthew Smith | 44e6046 | 2019-07-06 19:27:29 -0500 | [diff] [blame] | 1682 | vnet_buffer (b[0])->ip.adj_index[VLIB_RX] = |
| 1683 | vnet_buffer (b[0])->ip.adj_index[VLIB_TX]; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1684 | vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = last_check->lbi; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1685 | |
Matthew Smith | 44e6046 | 2019-07-06 19:27:29 -0500 | [diff] [blame] | 1686 | vnet_buffer (b[1])->ip.adj_index[VLIB_RX] = |
| 1687 | vnet_buffer (b[1])->ip.adj_index[VLIB_TX]; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1688 | vnet_buffer (b[1])->ip.adj_index[VLIB_TX] = last_check->lbi; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1689 | |
| 1690 | error[0] = last_check->error; |
| 1691 | error[1] = last_check->error; |
Neale Ranns | be2286b | 2018-12-09 12:54:51 -0800 | [diff] [blame] | 1692 | last_check->first = 0; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1693 | } |
| 1694 | } |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1695 | |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1696 | enum ip_local_packet_type_e |
| 1697 | { |
| 1698 | IP_LOCAL_PACKET_TYPE_L4, |
| 1699 | IP_LOCAL_PACKET_TYPE_NAT, |
Juraj Sloboda | 3048b63 | 2018-10-02 11:13:53 +0200 | [diff] [blame] | 1700 | IP_LOCAL_PACKET_TYPE_FRAG, |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1701 | }; |
| 1702 | |
| 1703 | /** |
| 1704 | * Determine packet type and next node. |
| 1705 | * |
| 1706 | * The expectation is that all packets that are not L4 will skip |
| 1707 | * checksums and source checks. |
| 1708 | */ |
| 1709 | always_inline u8 |
| 1710 | ip4_local_classify (vlib_buffer_t * b, ip4_header_t * ip, u16 * next) |
| 1711 | { |
| 1712 | ip_lookup_main_t *lm = &ip4_main.lookup_main; |
| 1713 | |
Juraj Sloboda | 3048b63 | 2018-10-02 11:13:53 +0200 | [diff] [blame] | 1714 | if (PREDICT_FALSE (ip4_is_fragment (ip))) |
| 1715 | { |
| 1716 | *next = IP_LOCAL_NEXT_REASSEMBLY; |
| 1717 | return IP_LOCAL_PACKET_TYPE_FRAG; |
| 1718 | } |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1719 | if (PREDICT_FALSE (b->flags & VNET_BUFFER_F_IS_NATED)) |
| 1720 | { |
| 1721 | *next = lm->local_next_by_ip_protocol[ip->protocol]; |
| 1722 | return IP_LOCAL_PACKET_TYPE_NAT; |
| 1723 | } |
| 1724 | |
| 1725 | *next = lm->local_next_by_ip_protocol[ip->protocol]; |
| 1726 | return IP_LOCAL_PACKET_TYPE_L4; |
| 1727 | } |
| 1728 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1729 | static inline uword |
| 1730 | ip4_local_inline (vlib_main_t * vm, |
| 1731 | vlib_node_runtime_t * node, |
| 1732 | vlib_frame_t * frame, int head_of_feature_arc) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1733 | { |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1734 | u32 *from, n_left_from; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1735 | vlib_node_runtime_t *error_node = |
| 1736 | vlib_node_get_runtime (vm, ip4_input_node.index); |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1737 | u16 nexts[VLIB_FRAME_SIZE], *next; |
| 1738 | vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b; |
| 1739 | ip4_header_t *ip[2]; |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1740 | u8 error[2], pt[2]; |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1741 | |
| 1742 | ip4_local_last_check_t last_check = { |
Neale Ranns | be2286b | 2018-12-09 12:54:51 -0800 | [diff] [blame] | 1743 | /* |
| 1744 | * 0.0.0.0 can appear as the source address of an IP packet, |
| 1745 | * as can any other address, hence the need to use the 'first' |
| 1746 | * member to make sure the .lbi is initialised for the first |
| 1747 | * packet. |
| 1748 | */ |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1749 | .src = {.as_u32 = 0}, |
| 1750 | .lbi = ~0, |
Neale Ranns | be2286b | 2018-12-09 12:54:51 -0800 | [diff] [blame] | 1751 | .error = IP4_ERROR_UNKNOWN_PROTOCOL, |
| 1752 | .first = 1, |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1753 | }; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1754 | |
| 1755 | from = vlib_frame_vector_args (frame); |
| 1756 | n_left_from = frame->n_vectors; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 1757 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1758 | if (node->flags & VLIB_NODE_FLAG_TRACE) |
| 1759 | ip4_forward_next_trace (vm, node, frame, VLIB_TX); |
| 1760 | |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1761 | vlib_get_buffers (vm, from, bufs, n_left_from); |
| 1762 | b = bufs; |
| 1763 | next = nexts; |
| 1764 | |
| 1765 | while (n_left_from >= 6) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1766 | { |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1767 | u8 not_batch = 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1768 | |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1769 | /* Prefetch next iteration. */ |
| 1770 | { |
| 1771 | vlib_prefetch_buffer_header (b[4], LOAD); |
| 1772 | vlib_prefetch_buffer_header (b[5], LOAD); |
| 1773 | |
| 1774 | CLIB_PREFETCH (b[4]->data, CLIB_CACHE_LINE_BYTES, LOAD); |
| 1775 | CLIB_PREFETCH (b[5]->data, CLIB_CACHE_LINE_BYTES, LOAD); |
| 1776 | } |
| 1777 | |
| 1778 | error[0] = error[1] = IP4_ERROR_UNKNOWN_PROTOCOL; |
| 1779 | |
| 1780 | ip[0] = vlib_buffer_get_current (b[0]); |
| 1781 | ip[1] = vlib_buffer_get_current (b[1]); |
| 1782 | |
| 1783 | vnet_buffer (b[0])->l3_hdr_offset = b[0]->current_data; |
| 1784 | vnet_buffer (b[1])->l3_hdr_offset = b[1]->current_data; |
| 1785 | |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1786 | pt[0] = ip4_local_classify (b[0], ip[0], &next[0]); |
| 1787 | pt[1] = ip4_local_classify (b[1], ip[1], &next[1]); |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1788 | |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1789 | not_batch = pt[0] ^ pt[1]; |
| 1790 | |
| 1791 | if (head_of_feature_arc == 0 || (pt[0] && not_batch == 0)) |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1792 | goto skip_checks; |
| 1793 | |
| 1794 | if (PREDICT_TRUE (not_batch == 0)) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1795 | { |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1796 | ip4_local_check_l4_csum_x2 (vm, b, ip, error); |
| 1797 | ip4_local_check_src_x2 (b, ip, &last_check, error); |
| 1798 | } |
| 1799 | else |
| 1800 | { |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1801 | if (!pt[0]) |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1802 | { |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1803 | ip4_local_check_l4_csum (vm, b[0], ip[0], &error[0]); |
| 1804 | ip4_local_check_src (b[0], ip[0], &last_check, &error[0]); |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1805 | } |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1806 | if (!pt[1]) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1807 | { |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1808 | ip4_local_check_l4_csum (vm, b[1], ip[1], &error[1]); |
| 1809 | ip4_local_check_src (b[1], ip[1], &last_check, &error[1]); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1810 | } |
| 1811 | } |
| 1812 | |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1813 | skip_checks: |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1814 | |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1815 | ip4_local_set_next_and_error (error_node, b[0], &next[0], error[0], |
| 1816 | head_of_feature_arc); |
| 1817 | ip4_local_set_next_and_error (error_node, b[1], &next[1], error[1], |
| 1818 | head_of_feature_arc); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 1819 | |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1820 | b += 2; |
| 1821 | next += 2; |
| 1822 | n_left_from -= 2; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1823 | } |
| 1824 | |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1825 | while (n_left_from > 0) |
| 1826 | { |
| 1827 | error[0] = IP4_ERROR_UNKNOWN_PROTOCOL; |
| 1828 | |
| 1829 | ip[0] = vlib_buffer_get_current (b[0]); |
| 1830 | vnet_buffer (b[0])->l3_hdr_offset = b[0]->current_data; |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1831 | pt[0] = ip4_local_classify (b[0], ip[0], &next[0]); |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1832 | |
Florin Coras | c67cfd2 | 2018-10-01 21:59:18 -0700 | [diff] [blame] | 1833 | if (head_of_feature_arc == 0 || pt[0]) |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1834 | goto skip_check; |
| 1835 | |
| 1836 | ip4_local_check_l4_csum (vm, b[0], ip[0], &error[0]); |
| 1837 | ip4_local_check_src (b[0], ip[0], &last_check, &error[0]); |
| 1838 | |
| 1839 | skip_check: |
| 1840 | |
Florin Coras | 1b25552 | 2018-06-01 12:22:23 -0700 | [diff] [blame] | 1841 | ip4_local_set_next_and_error (error_node, b[0], &next[0], error[0], |
| 1842 | head_of_feature_arc); |
| 1843 | |
| 1844 | b += 1; |
| 1845 | next += 1; |
| 1846 | n_left_from -= 1; |
| 1847 | } |
| 1848 | |
| 1849 | vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1850 | return frame->n_vectors; |
| 1851 | } |
| 1852 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1853 | VLIB_NODE_FN (ip4_local_node) (vlib_main_t * vm, vlib_node_runtime_t * node, |
| 1854 | vlib_frame_t * frame) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1855 | { |
| 1856 | return ip4_local_inline (vm, node, frame, 1 /* head of feature arc */ ); |
| 1857 | } |
| 1858 | |
| 1859 | /* *INDENT-OFF* */ |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 1860 | VLIB_REGISTER_NODE (ip4_local_node) = |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1861 | { |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1862 | .name = "ip4-local", |
| 1863 | .vector_size = sizeof (u32), |
| 1864 | .format_trace = format_ip4_forward_next_trace, |
| 1865 | .n_next_nodes = IP_LOCAL_N_NEXT, |
| 1866 | .next_nodes = |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1867 | { |
Neale Ranns | d91c1db | 2017-07-31 02:30:50 -0700 | [diff] [blame] | 1868 | [IP_LOCAL_NEXT_DROP] = "ip4-drop", |
| 1869 | [IP_LOCAL_NEXT_PUNT] = "ip4-punt", |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1870 | [IP_LOCAL_NEXT_UDP_LOOKUP] = "ip4-udp-lookup", |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1871 | [IP_LOCAL_NEXT_ICMP] = "ip4-icmp-input", |
Juraj Sloboda | 3048b63 | 2018-10-02 11:13:53 +0200 | [diff] [blame] | 1872 | [IP_LOCAL_NEXT_REASSEMBLY] = "ip4-reassembly", |
Florin Coras | 20a14b9 | 2017-08-15 22:47:22 -0700 | [diff] [blame] | 1873 | }, |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1874 | }; |
| 1875 | /* *INDENT-ON* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1876 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1877 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1878 | VLIB_NODE_FN (ip4_local_end_of_arc_node) (vlib_main_t * vm, |
| 1879 | vlib_node_runtime_t * node, |
| 1880 | vlib_frame_t * frame) |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1881 | { |
| 1882 | return ip4_local_inline (vm, node, frame, 0 /* head of feature arc */ ); |
| 1883 | } |
| 1884 | |
| 1885 | /* *INDENT-OFF* */ |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1886 | VLIB_REGISTER_NODE (ip4_local_end_of_arc_node) = { |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1887 | .name = "ip4-local-end-of-arc", |
| 1888 | .vector_size = sizeof (u32), |
| 1889 | |
| 1890 | .format_trace = format_ip4_forward_next_trace, |
| 1891 | .sibling_of = "ip4-local", |
| 1892 | }; |
| 1893 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 1894 | VNET_FEATURE_INIT (ip4_local_end_of_arc, static) = { |
| 1895 | .arc_name = "ip4-local", |
| 1896 | .node_name = "ip4-local-end-of-arc", |
| 1897 | .runs_before = 0, /* not before any other features */ |
| 1898 | }; |
| 1899 | /* *INDENT-ON* */ |
| 1900 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1901 | #ifndef CLIB_MARCH_VARIANT |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1902 | void |
| 1903 | ip4_register_protocol (u32 protocol, u32 node_index) |
| 1904 | { |
| 1905 | vlib_main_t *vm = vlib_get_main (); |
| 1906 | ip4_main_t *im = &ip4_main; |
| 1907 | ip_lookup_main_t *lm = &im->lookup_main; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1908 | |
| 1909 | ASSERT (protocol < ARRAY_LEN (lm->local_next_by_ip_protocol)); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1910 | lm->local_next_by_ip_protocol[protocol] = |
| 1911 | vlib_node_add_next (vm, ip4_local_node.index, node_index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1912 | } |
Neale Ranns | b538dd8 | 2019-05-21 06:54:54 -0700 | [diff] [blame] | 1913 | |
| 1914 | void |
| 1915 | ip4_unregister_protocol (u32 protocol) |
| 1916 | { |
| 1917 | ip4_main_t *im = &ip4_main; |
| 1918 | ip_lookup_main_t *lm = &im->lookup_main; |
| 1919 | |
| 1920 | ASSERT (protocol < ARRAY_LEN (lm->local_next_by_ip_protocol)); |
| 1921 | lm->local_next_by_ip_protocol[protocol] = IP_LOCAL_NEXT_PUNT; |
| 1922 | } |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 1923 | #endif |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1924 | |
| 1925 | static clib_error_t * |
| 1926 | show_ip_local_command_fn (vlib_main_t * vm, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1927 | unformat_input_t * input, vlib_cli_command_t * cmd) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1928 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1929 | ip4_main_t *im = &ip4_main; |
| 1930 | ip_lookup_main_t *lm = &im->lookup_main; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1931 | int i; |
| 1932 | |
| 1933 | vlib_cli_output (vm, "Protocols handled by ip4_local"); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1934 | 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] | 1935 | { |
| 1936 | if (lm->local_next_by_ip_protocol[i] != IP_LOCAL_NEXT_PUNT) |
Pierre Pfister | 1bfd372 | 2017-09-18 11:40:32 +0200 | [diff] [blame] | 1937 | { |
| 1938 | u32 node_index = vlib_get_node (vm, |
| 1939 | ip4_local_node.index)-> |
| 1940 | next_nodes[lm->local_next_by_ip_protocol[i]]; |
Neale Ranns | b538dd8 | 2019-05-21 06:54:54 -0700 | [diff] [blame] | 1941 | vlib_cli_output (vm, "%U: %U", format_ip_protocol, i, |
| 1942 | format_vlib_node_name, vm, node_index); |
Pierre Pfister | 1bfd372 | 2017-09-18 11:40:32 +0200 | [diff] [blame] | 1943 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1944 | } |
| 1945 | return 0; |
| 1946 | } |
| 1947 | |
| 1948 | |
| 1949 | |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 1950 | /*? |
| 1951 | * Display the set of protocols handled by the local IPv4 stack. |
| 1952 | * |
| 1953 | * @cliexpar |
| 1954 | * Example of how to display local protocol table: |
| 1955 | * @cliexstart{show ip local} |
| 1956 | * Protocols handled by ip4_local |
| 1957 | * 1 |
| 1958 | * 17 |
| 1959 | * 47 |
| 1960 | * @cliexend |
| 1961 | ?*/ |
| 1962 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1963 | VLIB_CLI_COMMAND (show_ip_local, static) = |
| 1964 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1965 | .path = "show ip local", |
| 1966 | .function = show_ip_local_command_fn, |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 1967 | .short_help = "show ip local", |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1968 | }; |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 1969 | /* *INDENT-ON* */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1970 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 1971 | always_inline uword |
| 1972 | ip4_arp_inline (vlib_main_t * vm, |
| 1973 | vlib_node_runtime_t * node, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1974 | vlib_frame_t * frame, int is_glean) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1975 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1976 | vnet_main_t *vnm = vnet_get_main (); |
| 1977 | ip4_main_t *im = &ip4_main; |
| 1978 | ip_lookup_main_t *lm = &im->lookup_main; |
| 1979 | u32 *from, *to_next_drop; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1980 | uword n_left_from, n_left_to_next_drop, next_index; |
Dave Barach | 49433ad | 2018-08-08 17:59:03 -0400 | [diff] [blame] | 1981 | u32 thread_index = vm->thread_index; |
Neale Ranns | cd35e53 | 2018-08-31 02:51:45 -0700 | [diff] [blame] | 1982 | u64 seed; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1983 | |
| 1984 | if (node->flags & VLIB_NODE_FLAG_TRACE) |
| 1985 | ip4_forward_next_trace (vm, node, frame, VLIB_TX); |
| 1986 | |
Neale Ranns | c8352bc | 2018-08-29 10:23:58 -0700 | [diff] [blame] | 1987 | seed = throttle_seed (&im->arp_throttle, thread_index, vlib_time_now (vm)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1988 | |
| 1989 | from = vlib_frame_vector_args (frame); |
| 1990 | n_left_from = frame->n_vectors; |
| 1991 | next_index = node->cached_next_index; |
| 1992 | if (next_index == IP4_ARP_NEXT_DROP) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 1993 | next_index = IP4_ARP_N_NEXT; /* point to first interface */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1994 | |
| 1995 | while (n_left_from > 0) |
| 1996 | { |
| 1997 | vlib_get_next_frame (vm, node, IP4_ARP_NEXT_DROP, |
| 1998 | to_next_drop, n_left_to_next_drop); |
| 1999 | |
| 2000 | while (n_left_from > 0 && n_left_to_next_drop > 0) |
| 2001 | { |
Eyal Bari | bf9f02c | 2018-10-31 13:19:11 +0200 | [diff] [blame] | 2002 | u32 pi0, bi0, adj_index0, sw_if_index0; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2003 | ip_adjacency_t *adj0; |
Eyal Bari | bf9f02c | 2018-10-31 13:19:11 +0200 | [diff] [blame] | 2004 | vlib_buffer_t *p0, *b0; |
| 2005 | ip4_address_t resolve0; |
| 2006 | ethernet_arp_header_t *h0; |
| 2007 | vnet_hw_interface_t *hw_if0; |
Neale Ranns | cd35e53 | 2018-08-31 02:51:45 -0700 | [diff] [blame] | 2008 | u64 r0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2009 | |
| 2010 | pi0 = from[0]; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2011 | p0 = vlib_get_buffer (vm, pi0); |
| 2012 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2013 | from += 1; |
| 2014 | n_left_from -= 1; |
| 2015 | to_next_drop[0] = pi0; |
| 2016 | to_next_drop += 1; |
| 2017 | n_left_to_next_drop -= 1; |
| 2018 | |
Eyal Bari | bf9f02c | 2018-10-31 13:19:11 +0200 | [diff] [blame] | 2019 | adj_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_TX]; |
| 2020 | adj0 = adj_get (adj_index0); |
| 2021 | |
| 2022 | if (is_glean) |
| 2023 | { |
| 2024 | /* resolve the packet's destination */ |
| 2025 | ip4_header_t *ip0 = vlib_buffer_get_current (p0); |
| 2026 | resolve0 = ip0->dst_address; |
| 2027 | } |
| 2028 | else |
| 2029 | { |
| 2030 | /* resolve the incomplete adj */ |
| 2031 | resolve0 = adj0->sub_type.nbr.next_hop.ip4; |
| 2032 | } |
| 2033 | |
| 2034 | /* combine the address and interface for the hash key */ |
| 2035 | sw_if_index0 = adj0->rewrite_header.sw_if_index; |
| 2036 | r0 = (u64) resolve0.data_u32 << 32; |
| 2037 | r0 |= sw_if_index0; |
| 2038 | |
| 2039 | if (throttle_check (&im->arp_throttle, thread_index, r0, seed)) |
| 2040 | { |
| 2041 | p0->error = node->errors[IP4_ARP_ERROR_THROTTLED]; |
| 2042 | continue; |
| 2043 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2044 | |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 2045 | /* |
| 2046 | * the adj has been updated to a rewrite but the node the DPO that got |
| 2047 | * us here hasn't - yet. no big deal. we'll drop while we wait. |
| 2048 | */ |
| 2049 | if (IP_LOOKUP_NEXT_REWRITE == adj0->lookup_next_index) |
Eyal Bari | bf9f02c | 2018-10-31 13:19:11 +0200 | [diff] [blame] | 2050 | { |
| 2051 | p0->error = node->errors[IP4_ARP_ERROR_RESOLVED]; |
| 2052 | continue; |
| 2053 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2054 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2055 | /* |
| 2056 | * Can happen if the control-plane is programming tables |
| 2057 | * with traffic flowing; at least that's today's lame excuse. |
| 2058 | */ |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2059 | if ((is_glean && adj0->lookup_next_index != IP_LOOKUP_NEXT_GLEAN) |
| 2060 | || (!is_glean && adj0->lookup_next_index != IP_LOOKUP_NEXT_ARP)) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2061 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2062 | p0->error = node->errors[IP4_ARP_ERROR_NON_ARP_ADJ]; |
Eyal Bari | bf9f02c | 2018-10-31 13:19:11 +0200 | [diff] [blame] | 2063 | continue; |
| 2064 | } |
| 2065 | /* Send ARP request. */ |
| 2066 | h0 = |
| 2067 | vlib_packet_template_get_packet (vm, |
| 2068 | &im->ip4_arp_request_packet_template, |
| 2069 | &bi0); |
Eyal Bari | bf9f02c | 2018-10-31 13:19:11 +0200 | [diff] [blame] | 2070 | /* Seems we're out of buffers */ |
| 2071 | if (PREDICT_FALSE (!h0)) |
| 2072 | { |
| 2073 | p0->error = node->errors[IP4_ARP_ERROR_NO_BUFFERS]; |
| 2074 | continue; |
| 2075 | } |
| 2076 | |
Dave Barach | b19bf8d | 2019-05-31 08:41:34 -0400 | [diff] [blame] | 2077 | b0 = vlib_get_buffer (vm, bi0); |
| 2078 | |
| 2079 | /* copy the persistent fields from the original */ |
| 2080 | clib_memcpy_fast (b0->opaque2, p0->opaque2, sizeof (p0->opaque2)); |
| 2081 | |
Eyal Bari | bf9f02c | 2018-10-31 13:19:11 +0200 | [diff] [blame] | 2082 | /* Add rewrite/encap string for ARP packet. */ |
| 2083 | vnet_rewrite_one_header (adj0[0], h0, sizeof (ethernet_header_t)); |
| 2084 | |
| 2085 | hw_if0 = vnet_get_sup_hw_interface (vnm, sw_if_index0); |
| 2086 | |
| 2087 | /* Src ethernet address in ARP header. */ |
Neale Ranns | 3702930 | 2018-08-10 05:30:06 -0700 | [diff] [blame] | 2088 | mac_address_from_bytes (&h0->ip4_over_ethernet[0].mac, |
| 2089 | hw_if0->hw_address); |
Eyal Bari | bf9f02c | 2018-10-31 13:19:11 +0200 | [diff] [blame] | 2090 | if (is_glean) |
| 2091 | { |
| 2092 | /* The interface's source address is stashed in the Glean Adj */ |
| 2093 | h0->ip4_over_ethernet[0].ip4 = |
| 2094 | adj0->sub_type.glean.receive_addr.ip4; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2095 | } |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2096 | else |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2097 | { |
Eyal Bari | bf9f02c | 2018-10-31 13:19:11 +0200 | [diff] [blame] | 2098 | /* Src IP address in ARP header. */ |
| 2099 | if (ip4_src_address_for_packet (lm, sw_if_index0, |
| 2100 | &h0->ip4_over_ethernet[0].ip4)) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2101 | { |
Eyal Bari | bf9f02c | 2018-10-31 13:19:11 +0200 | [diff] [blame] | 2102 | /* No source address available */ |
| 2103 | p0->error = node->errors[IP4_ARP_ERROR_NO_SOURCE_ADDRESS]; |
| 2104 | vlib_buffer_free (vm, &bi0, 1); |
| 2105 | continue; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2106 | } |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2107 | } |
Eyal Bari | bf9f02c | 2018-10-31 13:19:11 +0200 | [diff] [blame] | 2108 | h0->ip4_over_ethernet[1].ip4 = resolve0; |
| 2109 | |
| 2110 | p0->error = node->errors[IP4_ARP_ERROR_REQUEST_SENT]; |
| 2111 | |
| 2112 | vlib_buffer_copy_trace_flag (vm, p0, bi0); |
Eyal Bari | bf9f02c | 2018-10-31 13:19:11 +0200 | [diff] [blame] | 2113 | VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0); |
| 2114 | vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0; |
| 2115 | |
| 2116 | vlib_buffer_advance (b0, -adj0->rewrite_header.data_bytes); |
| 2117 | |
| 2118 | vlib_set_next_frame_buffer (vm, node, |
| 2119 | adj0->rewrite_header.next_index, bi0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2120 | } |
| 2121 | |
| 2122 | vlib_put_next_frame (vm, node, IP4_ARP_NEXT_DROP, n_left_to_next_drop); |
| 2123 | } |
| 2124 | |
| 2125 | return frame->n_vectors; |
| 2126 | } |
| 2127 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2128 | VLIB_NODE_FN (ip4_arp_node) (vlib_main_t * vm, vlib_node_runtime_t * node, |
| 2129 | vlib_frame_t * frame) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2130 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2131 | return (ip4_arp_inline (vm, node, frame, 0)); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2132 | } |
| 2133 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2134 | VLIB_NODE_FN (ip4_glean_node) (vlib_main_t * vm, vlib_node_runtime_t * node, |
| 2135 | vlib_frame_t * frame) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2136 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2137 | return (ip4_arp_inline (vm, node, frame, 1)); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2138 | } |
| 2139 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2140 | static char *ip4_arp_error_strings[] = { |
Eyal Bari | bf9f02c | 2018-10-31 13:19:11 +0200 | [diff] [blame] | 2141 | [IP4_ARP_ERROR_THROTTLED] = "ARP requests throttled", |
| 2142 | [IP4_ARP_ERROR_RESOLVED] = "ARP requests resolved", |
| 2143 | [IP4_ARP_ERROR_NO_BUFFERS] = "ARP requests out of buffer", |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2144 | [IP4_ARP_ERROR_REQUEST_SENT] = "ARP requests sent", |
| 2145 | [IP4_ARP_ERROR_NON_ARP_ADJ] = "ARPs to non-ARP adjacencies", |
Pierre Pfister | d076f19 | 2016-06-22 12:58:30 +0100 | [diff] [blame] | 2146 | [IP4_ARP_ERROR_NO_SOURCE_ADDRESS] = "no source address for ARP request", |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2147 | }; |
| 2148 | |
Neale Ranns | f868632 | 2017-11-29 02:39:53 -0800 | [diff] [blame] | 2149 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2150 | VLIB_REGISTER_NODE (ip4_arp_node) = |
| 2151 | { |
Neale Ranns | f868632 | 2017-11-29 02:39:53 -0800 | [diff] [blame] | 2152 | .name = "ip4-arp", |
| 2153 | .vector_size = sizeof (u32), |
| 2154 | .format_trace = format_ip4_forward_next_trace, |
| 2155 | .n_errors = ARRAY_LEN (ip4_arp_error_strings), |
| 2156 | .error_strings = ip4_arp_error_strings, |
| 2157 | .n_next_nodes = IP4_ARP_N_NEXT, |
| 2158 | .next_nodes = |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2159 | { |
Neale Ranns | f868632 | 2017-11-29 02:39:53 -0800 | [diff] [blame] | 2160 | [IP4_ARP_NEXT_DROP] = "error-drop", |
| 2161 | }, |
| 2162 | }; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2163 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2164 | VLIB_REGISTER_NODE (ip4_glean_node) = |
| 2165 | { |
Neale Ranns | f868632 | 2017-11-29 02:39:53 -0800 | [diff] [blame] | 2166 | .name = "ip4-glean", |
| 2167 | .vector_size = sizeof (u32), |
| 2168 | .format_trace = format_ip4_forward_next_trace, |
| 2169 | .n_errors = ARRAY_LEN (ip4_arp_error_strings), |
| 2170 | .error_strings = ip4_arp_error_strings, |
| 2171 | .n_next_nodes = IP4_ARP_N_NEXT, |
| 2172 | .next_nodes = { |
| 2173 | [IP4_ARP_NEXT_DROP] = "error-drop", |
| 2174 | }, |
| 2175 | }; |
| 2176 | /* *INDENT-ON* */ |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2177 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2178 | #define foreach_notrace_ip4_arp_error \ |
Eyal Bari | bf9f02c | 2018-10-31 13:19:11 +0200 | [diff] [blame] | 2179 | _(THROTTLED) \ |
| 2180 | _(RESOLVED) \ |
| 2181 | _(NO_BUFFERS) \ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2182 | _(REQUEST_SENT) \ |
Eyal Bari | bf9f02c | 2018-10-31 13:19:11 +0200 | [diff] [blame] | 2183 | _(NON_ARP_ADJ) \ |
| 2184 | _(NO_SOURCE_ADDRESS) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2185 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2186 | static clib_error_t * |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2187 | arp_notrace_init (vlib_main_t * vm) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2188 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2189 | vlib_node_runtime_t *rt = vlib_node_get_runtime (vm, ip4_arp_node.index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2190 | |
| 2191 | /* don't trace ARP request packets */ |
| 2192 | #define _(a) \ |
| 2193 | vnet_pcap_drop_trace_filter_add_del \ |
| 2194 | (rt->errors[IP4_ARP_ERROR_##a], \ |
| 2195 | 1 /* is_add */); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2196 | foreach_notrace_ip4_arp_error; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2197 | #undef _ |
| 2198 | return 0; |
| 2199 | } |
| 2200 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2201 | VLIB_INIT_FUNCTION (arp_notrace_init); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2202 | |
| 2203 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2204 | #ifndef CLIB_MARCH_VARIANT |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2205 | /* Send an ARP request to see if given destination is reachable on given interface. */ |
| 2206 | clib_error_t * |
John Lo | 8637634 | 2018-06-11 20:14:49 -0400 | [diff] [blame] | 2207 | ip4_probe_neighbor (vlib_main_t * vm, ip4_address_t * dst, u32 sw_if_index, |
| 2208 | u8 refresh) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2209 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2210 | vnet_main_t *vnm = vnet_get_main (); |
| 2211 | ip4_main_t *im = &ip4_main; |
| 2212 | ethernet_arp_header_t *h; |
| 2213 | ip4_address_t *src; |
| 2214 | ip_interface_address_t *ia; |
| 2215 | ip_adjacency_t *adj; |
| 2216 | vnet_hw_interface_t *hi; |
| 2217 | vnet_sw_interface_t *si; |
| 2218 | vlib_buffer_t *b; |
Neale Ranns | 7a27274 | 2017-05-30 02:08:14 -0700 | [diff] [blame] | 2219 | adj_index_t ai; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2220 | u32 bi = 0; |
John Lo | 8637634 | 2018-06-11 20:14:49 -0400 | [diff] [blame] | 2221 | u8 unicast_rewrite = 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2222 | |
| 2223 | si = vnet_get_sw_interface (vnm, sw_if_index); |
| 2224 | |
| 2225 | if (!(si->flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)) |
| 2226 | { |
| 2227 | return clib_error_return (0, "%U: interface %U down", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2228 | format_ip4_address, dst, |
| 2229 | format_vnet_sw_if_index_name, vnm, |
| 2230 | sw_if_index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2231 | } |
| 2232 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2233 | src = |
| 2234 | ip4_interface_address_matching_destination (im, dst, sw_if_index, &ia); |
| 2235 | if (!src) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2236 | { |
| 2237 | vnm->api_errno = VNET_API_ERROR_NO_MATCHING_INTERFACE; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2238 | return clib_error_return |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2239 | (0, |
| 2240 | "no matching interface address for destination %U (interface %U)", |
| 2241 | format_ip4_address, dst, format_vnet_sw_if_index_name, vnm, |
| 2242 | sw_if_index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2243 | } |
| 2244 | |
Neale Ranns | 7a27274 | 2017-05-30 02:08:14 -0700 | [diff] [blame] | 2245 | h = vlib_packet_template_get_packet (vm, |
| 2246 | &im->ip4_arp_request_packet_template, |
| 2247 | &bi); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2248 | |
John Lo | 084606b | 2018-06-19 15:27:48 -0400 | [diff] [blame] | 2249 | if (!h) |
| 2250 | return clib_error_return (0, "ARP request packet allocation failed"); |
| 2251 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2252 | hi = vnet_get_sup_hw_interface (vnm, sw_if_index); |
Pavel Kotucek | 5780898 | 2017-08-02 08:20:19 +0200 | [diff] [blame] | 2253 | if (PREDICT_FALSE (!hi->hw_address)) |
| 2254 | { |
| 2255 | return clib_error_return (0, "%U: interface %U do not support ip probe", |
| 2256 | format_ip4_address, dst, |
| 2257 | format_vnet_sw_if_index_name, vnm, |
| 2258 | sw_if_index); |
| 2259 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2260 | |
Neale Ranns | 3702930 | 2018-08-10 05:30:06 -0700 | [diff] [blame] | 2261 | mac_address_from_bytes (&h->ip4_over_ethernet[0].mac, hi->hw_address); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2262 | |
| 2263 | h->ip4_over_ethernet[0].ip4 = src[0]; |
| 2264 | h->ip4_over_ethernet[1].ip4 = dst[0]; |
| 2265 | |
| 2266 | b = vlib_get_buffer (vm, bi); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2267 | vnet_buffer (b)->sw_if_index[VLIB_RX] = |
| 2268 | vnet_buffer (b)->sw_if_index[VLIB_TX] = sw_if_index; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2269 | |
Dave Barach | 59b2565 | 2017-09-10 15:04:27 -0400 | [diff] [blame] | 2270 | ip46_address_t nh = { |
| 2271 | .ip4 = *dst, |
| 2272 | }; |
| 2273 | |
| 2274 | ai = adj_nbr_add_or_lock (FIB_PROTOCOL_IP4, |
| 2275 | VNET_LINK_IP4, &nh, sw_if_index); |
| 2276 | adj = adj_get (ai); |
| 2277 | |
| 2278 | /* Peer has been previously resolved, retrieve glean adj instead */ |
| 2279 | if (adj->lookup_next_index == IP_LOOKUP_NEXT_REWRITE) |
| 2280 | { |
John Lo | 8637634 | 2018-06-11 20:14:49 -0400 | [diff] [blame] | 2281 | if (refresh) |
| 2282 | unicast_rewrite = 1; |
| 2283 | else |
| 2284 | { |
| 2285 | adj_unlock (ai); |
| 2286 | ai = adj_glean_add_or_lock (FIB_PROTOCOL_IP4, |
| 2287 | VNET_LINK_IP4, sw_if_index, &nh); |
| 2288 | adj = adj_get (ai); |
| 2289 | } |
Dave Barach | 59b2565 | 2017-09-10 15:04:27 -0400 | [diff] [blame] | 2290 | } |
| 2291 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2292 | /* Add encapsulation string for software interface (e.g. ethernet header). */ |
| 2293 | vnet_rewrite_one_header (adj[0], h, sizeof (ethernet_header_t)); |
John Lo | 8637634 | 2018-06-11 20:14:49 -0400 | [diff] [blame] | 2294 | if (unicast_rewrite) |
| 2295 | { |
| 2296 | u16 *etype = vlib_buffer_get_current (b) - 2; |
| 2297 | etype[0] = clib_host_to_net_u16 (ETHERNET_TYPE_ARP); |
| 2298 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2299 | vlib_buffer_advance (b, -adj->rewrite_header.data_bytes); |
| 2300 | |
| 2301 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2302 | vlib_frame_t *f = vlib_get_frame_to_node (vm, hi->output_node_index); |
| 2303 | u32 *to_next = vlib_frame_vector_args (f); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2304 | to_next[0] = bi; |
| 2305 | f->n_vectors = 1; |
| 2306 | vlib_put_frame_to_node (vm, hi->output_node_index, f); |
| 2307 | } |
| 2308 | |
Neale Ranns | 7a27274 | 2017-05-30 02:08:14 -0700 | [diff] [blame] | 2309 | adj_unlock (ai); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2310 | return /* no error */ 0; |
| 2311 | } |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2312 | #endif |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2313 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2314 | typedef enum |
| 2315 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2316 | IP4_REWRITE_NEXT_DROP, |
Chris Luke | 816f3e1 | 2016-06-14 16:24:47 -0400 | [diff] [blame] | 2317 | IP4_REWRITE_NEXT_ICMP_ERROR, |
Ole Troan | 313f7e2 | 2018-04-10 16:02:51 +0200 | [diff] [blame] | 2318 | IP4_REWRITE_NEXT_FRAGMENT, |
| 2319 | IP4_REWRITE_N_NEXT /* Last */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2320 | } ip4_rewrite_next_t; |
| 2321 | |
Neale Ranns | 889fe94 | 2017-06-01 05:43:19 -0400 | [diff] [blame] | 2322 | /** |
| 2323 | * This bits of an IPv4 address to mask to construct a multicast |
| 2324 | * MAC address |
| 2325 | */ |
| 2326 | #if CLIB_ARCH_IS_BIG_ENDIAN |
| 2327 | #define IP4_MCAST_ADDR_MASK 0x007fffff |
| 2328 | #else |
| 2329 | #define IP4_MCAST_ADDR_MASK 0xffff7f00 |
| 2330 | #endif |
| 2331 | |
Ole Troan | 8a9c8f1 | 2018-05-18 11:01:31 +0200 | [diff] [blame] | 2332 | always_inline void |
| 2333 | ip4_mtu_check (vlib_buffer_t * b, u16 packet_len, |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2334 | u16 adj_packet_bytes, bool df, u16 * next, u32 * error) |
Ole Troan | 8a9c8f1 | 2018-05-18 11:01:31 +0200 | [diff] [blame] | 2335 | { |
| 2336 | if (packet_len > adj_packet_bytes) |
| 2337 | { |
| 2338 | *error = IP4_ERROR_MTU_EXCEEDED; |
| 2339 | if (df) |
| 2340 | { |
| 2341 | icmp4_error_set_vnet_buffer |
| 2342 | (b, ICMP4_destination_unreachable, |
| 2343 | ICMP4_destination_unreachable_fragmentation_needed_and_dont_fragment_set, |
| 2344 | adj_packet_bytes); |
| 2345 | *next = IP4_REWRITE_NEXT_ICMP_ERROR; |
| 2346 | } |
| 2347 | else |
| 2348 | { |
Ole Troan | 313f7e2 | 2018-04-10 16:02:51 +0200 | [diff] [blame] | 2349 | /* IP fragmentation */ |
Ole Troan | 282093f | 2018-09-19 12:38:51 +0200 | [diff] [blame] | 2350 | ip_frag_set_vnet_buffer (b, adj_packet_bytes, |
Ole Troan | b3655e5 | 2018-08-16 22:08:49 +0200 | [diff] [blame] | 2351 | IP4_FRAG_NEXT_IP4_REWRITE, 0); |
Ole Troan | 313f7e2 | 2018-04-10 16:02:51 +0200 | [diff] [blame] | 2352 | *next = IP4_REWRITE_NEXT_FRAGMENT; |
Ole Troan | 8a9c8f1 | 2018-05-18 11:01:31 +0200 | [diff] [blame] | 2353 | } |
| 2354 | } |
| 2355 | } |
| 2356 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2357 | /* Decrement TTL & update checksum. |
| 2358 | Works either endian, so no need for byte swap. */ |
| 2359 | static_always_inline void |
| 2360 | ip4_ttl_and_checksum_check (vlib_buffer_t * b, ip4_header_t * ip, u16 * next, |
| 2361 | u32 * error) |
| 2362 | { |
| 2363 | i32 ttl; |
| 2364 | u32 checksum; |
| 2365 | if (PREDICT_FALSE (b->flags & VNET_BUFFER_F_LOCALLY_ORIGINATED)) |
| 2366 | { |
| 2367 | b->flags &= ~VNET_BUFFER_F_LOCALLY_ORIGINATED; |
| 2368 | return; |
| 2369 | } |
| 2370 | |
| 2371 | ttl = ip->ttl; |
| 2372 | |
| 2373 | /* Input node should have reject packets with ttl 0. */ |
| 2374 | ASSERT (ip->ttl > 0); |
| 2375 | |
| 2376 | checksum = ip->checksum + clib_host_to_net_u16 (0x0100); |
| 2377 | checksum += checksum >= 0xffff; |
| 2378 | |
| 2379 | ip->checksum = checksum; |
| 2380 | ttl -= 1; |
| 2381 | ip->ttl = ttl; |
| 2382 | |
| 2383 | /* |
| 2384 | * If the ttl drops below 1 when forwarding, generate |
| 2385 | * an ICMP response. |
| 2386 | */ |
| 2387 | if (PREDICT_FALSE (ttl <= 0)) |
| 2388 | { |
| 2389 | *error = IP4_ERROR_TIME_EXPIRED; |
| 2390 | vnet_buffer (b)->sw_if_index[VLIB_TX] = (u32) ~ 0; |
| 2391 | icmp4_error_set_vnet_buffer (b, ICMP4_time_exceeded, |
| 2392 | ICMP4_time_exceeded_ttl_exceeded_in_transit, |
| 2393 | 0); |
| 2394 | *next = IP4_REWRITE_NEXT_ICMP_ERROR; |
| 2395 | } |
| 2396 | |
| 2397 | /* Verify checksum. */ |
| 2398 | ASSERT ((ip->checksum == ip4_header_checksum (ip)) || |
| 2399 | (b->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM)); |
| 2400 | } |
| 2401 | |
| 2402 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2403 | always_inline uword |
Andrew Yourtchenko | 6a7cff7 | 2018-10-12 16:09:22 +0200 | [diff] [blame] | 2404 | ip4_rewrite_inline_with_gso (vlib_main_t * vm, |
| 2405 | vlib_node_runtime_t * node, |
| 2406 | vlib_frame_t * frame, |
| 2407 | int do_counters, int is_midchain, int is_mcast, |
| 2408 | int do_gso) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2409 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2410 | ip_lookup_main_t *lm = &ip4_main.lookup_main; |
| 2411 | u32 *from = vlib_frame_vector_args (frame); |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2412 | vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b; |
| 2413 | u16 nexts[VLIB_FRAME_SIZE], *next; |
| 2414 | u32 n_left_from; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2415 | vlib_node_runtime_t *error_node = |
| 2416 | vlib_node_get_runtime (vm, ip4_input_node.index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2417 | |
| 2418 | n_left_from = frame->n_vectors; |
Damjan Marion | 067cd62 | 2018-07-11 12:47:43 +0200 | [diff] [blame] | 2419 | u32 thread_index = vm->thread_index; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2420 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2421 | vlib_get_buffers (vm, from, bufs, n_left_from); |
| 2422 | clib_memset_u16 (nexts, IP4_REWRITE_NEXT_DROP, n_left_from); |
| 2423 | |
| 2424 | if (n_left_from >= 6) |
| 2425 | { |
| 2426 | int i; |
Simon Zhang | 5a5a869 | 2018-11-26 17:15:24 +0800 | [diff] [blame] | 2427 | for (i = 2; i < 6; i++) |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2428 | vlib_prefetch_buffer_header (bufs[i], LOAD); |
| 2429 | } |
| 2430 | |
| 2431 | next = nexts; |
| 2432 | b = bufs; |
| 2433 | while (n_left_from >= 8) |
| 2434 | { |
| 2435 | ip_adjacency_t *adj0, *adj1; |
| 2436 | ip4_header_t *ip0, *ip1; |
| 2437 | u32 rw_len0, error0, adj_index0; |
| 2438 | u32 rw_len1, error1, adj_index1; |
| 2439 | u32 tx_sw_if_index0, tx_sw_if_index1; |
| 2440 | u8 *p; |
| 2441 | |
| 2442 | vlib_prefetch_buffer_header (b[6], LOAD); |
| 2443 | vlib_prefetch_buffer_header (b[7], LOAD); |
| 2444 | |
| 2445 | adj_index0 = vnet_buffer (b[0])->ip.adj_index[VLIB_TX]; |
| 2446 | adj_index1 = vnet_buffer (b[1])->ip.adj_index[VLIB_TX]; |
| 2447 | |
| 2448 | /* |
| 2449 | * pre-fetch the per-adjacency counters |
| 2450 | */ |
| 2451 | if (do_counters) |
| 2452 | { |
| 2453 | vlib_prefetch_combined_counter (&adjacency_counters, |
| 2454 | thread_index, adj_index0); |
| 2455 | vlib_prefetch_combined_counter (&adjacency_counters, |
| 2456 | thread_index, adj_index1); |
| 2457 | } |
| 2458 | |
| 2459 | ip0 = vlib_buffer_get_current (b[0]); |
| 2460 | ip1 = vlib_buffer_get_current (b[1]); |
| 2461 | |
| 2462 | error0 = error1 = IP4_ERROR_NONE; |
| 2463 | |
| 2464 | ip4_ttl_and_checksum_check (b[0], ip0, next + 0, &error0); |
| 2465 | ip4_ttl_and_checksum_check (b[1], ip1, next + 1, &error1); |
| 2466 | |
| 2467 | /* Rewrite packet header and updates lengths. */ |
| 2468 | adj0 = adj_get (adj_index0); |
| 2469 | adj1 = adj_get (adj_index1); |
| 2470 | |
| 2471 | /* Worth pipelining. No guarantee that adj0,1 are hot... */ |
| 2472 | rw_len0 = adj0[0].rewrite_header.data_bytes; |
| 2473 | rw_len1 = adj1[0].rewrite_header.data_bytes; |
| 2474 | vnet_buffer (b[0])->ip.save_rewrite_length = rw_len0; |
| 2475 | vnet_buffer (b[1])->ip.save_rewrite_length = rw_len1; |
| 2476 | |
| 2477 | p = vlib_buffer_get_current (b[2]); |
| 2478 | CLIB_PREFETCH (p - CLIB_CACHE_LINE_BYTES, CLIB_CACHE_LINE_BYTES, STORE); |
| 2479 | CLIB_PREFETCH (p, CLIB_CACHE_LINE_BYTES, LOAD); |
| 2480 | |
| 2481 | p = vlib_buffer_get_current (b[3]); |
| 2482 | CLIB_PREFETCH (p - CLIB_CACHE_LINE_BYTES, CLIB_CACHE_LINE_BYTES, STORE); |
| 2483 | CLIB_PREFETCH (p, CLIB_CACHE_LINE_BYTES, LOAD); |
| 2484 | |
| 2485 | /* Check MTU of outgoing interface. */ |
Andrew Yourtchenko | 6a7cff7 | 2018-10-12 16:09:22 +0200 | [diff] [blame] | 2486 | u16 ip0_len = clib_net_to_host_u16 (ip0->length); |
| 2487 | u16 ip1_len = clib_net_to_host_u16 (ip1->length); |
| 2488 | |
| 2489 | if (do_gso && (b[0]->flags & VNET_BUFFER_F_GSO)) |
| 2490 | ip0_len = gso_mtu_sz (b[0]); |
| 2491 | if (do_gso && (b[1]->flags & VNET_BUFFER_F_GSO)) |
| 2492 | ip1_len = gso_mtu_sz (b[1]); |
| 2493 | |
| 2494 | ip4_mtu_check (b[0], ip0_len, |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2495 | adj0[0].rewrite_header.max_l3_packet_bytes, |
| 2496 | ip0->flags_and_fragment_offset & |
| 2497 | clib_host_to_net_u16 (IP4_HEADER_FLAG_DONT_FRAGMENT), |
| 2498 | next + 0, &error0); |
Andrew Yourtchenko | 6a7cff7 | 2018-10-12 16:09:22 +0200 | [diff] [blame] | 2499 | ip4_mtu_check (b[1], ip1_len, |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2500 | adj1[0].rewrite_header.max_l3_packet_bytes, |
| 2501 | ip1->flags_and_fragment_offset & |
| 2502 | clib_host_to_net_u16 (IP4_HEADER_FLAG_DONT_FRAGMENT), |
| 2503 | next + 1, &error1); |
| 2504 | |
| 2505 | if (is_mcast) |
| 2506 | { |
| 2507 | error0 = ((adj0[0].rewrite_header.sw_if_index == |
| 2508 | vnet_buffer (b[0])->sw_if_index[VLIB_RX]) ? |
| 2509 | IP4_ERROR_SAME_INTERFACE : error0); |
| 2510 | error1 = ((adj1[0].rewrite_header.sw_if_index == |
| 2511 | vnet_buffer (b[1])->sw_if_index[VLIB_RX]) ? |
| 2512 | IP4_ERROR_SAME_INTERFACE : error1); |
| 2513 | } |
| 2514 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2515 | /* Don't adjust the buffer for ttl issue; icmp-error node wants |
Jim Thompson | f324dec | 2019-04-08 03:22:21 -0500 | [diff] [blame] | 2516 | * to see the IP header */ |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2517 | if (PREDICT_TRUE (error0 == IP4_ERROR_NONE)) |
| 2518 | { |
| 2519 | u32 next_index = adj0[0].rewrite_header.next_index; |
Zhiyong Yang | a665921 | 2019-06-25 22:41:55 -0400 | [diff] [blame] | 2520 | vlib_buffer_advance (b[0], -(word) rw_len0); |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2521 | tx_sw_if_index0 = adj0[0].rewrite_header.sw_if_index; |
| 2522 | vnet_buffer (b[0])->sw_if_index[VLIB_TX] = tx_sw_if_index0; |
| 2523 | |
| 2524 | if (PREDICT_FALSE |
| 2525 | (adj0[0].rewrite_header.flags & VNET_REWRITE_HAS_FEATURES)) |
| 2526 | vnet_feature_arc_start (lm->output_feature_arc_index, |
| 2527 | tx_sw_if_index0, &next_index, b[0]); |
| 2528 | next[0] = next_index; |
| 2529 | } |
Kingwel Xie | cb36a1d | 2019-03-20 03:45:47 -0400 | [diff] [blame] | 2530 | else |
| 2531 | { |
| 2532 | b[0]->error = error_node->errors[error0]; |
| 2533 | } |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2534 | if (PREDICT_TRUE (error1 == IP4_ERROR_NONE)) |
| 2535 | { |
| 2536 | u32 next_index = adj1[0].rewrite_header.next_index; |
Zhiyong Yang | a665921 | 2019-06-25 22:41:55 -0400 | [diff] [blame] | 2537 | vlib_buffer_advance (b[1], -(word) rw_len1); |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2538 | |
| 2539 | tx_sw_if_index1 = adj1[0].rewrite_header.sw_if_index; |
| 2540 | vnet_buffer (b[1])->sw_if_index[VLIB_TX] = tx_sw_if_index1; |
| 2541 | |
| 2542 | if (PREDICT_FALSE |
| 2543 | (adj1[0].rewrite_header.flags & VNET_REWRITE_HAS_FEATURES)) |
| 2544 | vnet_feature_arc_start (lm->output_feature_arc_index, |
| 2545 | tx_sw_if_index1, &next_index, b[1]); |
| 2546 | next[1] = next_index; |
| 2547 | } |
Kingwel Xie | cb36a1d | 2019-03-20 03:45:47 -0400 | [diff] [blame] | 2548 | else |
| 2549 | { |
| 2550 | b[1]->error = error_node->errors[error1]; |
| 2551 | } |
Neale Ranns | 25edf14 | 2019-03-22 08:12:48 +0000 | [diff] [blame] | 2552 | if (is_midchain) |
| 2553 | { |
| 2554 | calc_checksums (vm, b[0]); |
| 2555 | calc_checksums (vm, b[1]); |
| 2556 | } |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2557 | /* Guess we are only writing on simple Ethernet header. */ |
| 2558 | vnet_rewrite_two_headers (adj0[0], adj1[0], |
| 2559 | ip0, ip1, sizeof (ethernet_header_t)); |
| 2560 | |
| 2561 | /* |
| 2562 | * Bump the per-adjacency counters |
| 2563 | */ |
| 2564 | if (do_counters) |
| 2565 | { |
| 2566 | vlib_increment_combined_counter |
| 2567 | (&adjacency_counters, |
| 2568 | thread_index, |
| 2569 | adj_index0, 1, vlib_buffer_length_in_chain (vm, b[0]) + rw_len0); |
| 2570 | |
| 2571 | vlib_increment_combined_counter |
| 2572 | (&adjacency_counters, |
| 2573 | thread_index, |
| 2574 | adj_index1, 1, vlib_buffer_length_in_chain (vm, b[1]) + rw_len1); |
| 2575 | } |
| 2576 | |
| 2577 | if (is_midchain) |
| 2578 | { |
Neale Ranns | 25edf14 | 2019-03-22 08:12:48 +0000 | [diff] [blame] | 2579 | if (adj0->sub_type.midchain.fixup_func) |
| 2580 | adj0->sub_type.midchain.fixup_func |
| 2581 | (vm, adj0, b[0], adj0->sub_type.midchain.fixup_data); |
| 2582 | if (adj1->sub_type.midchain.fixup_func) |
| 2583 | adj1->sub_type.midchain.fixup_func |
| 2584 | (vm, adj1, b[1], adj1->sub_type.midchain.fixup_data); |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2585 | } |
| 2586 | |
| 2587 | if (is_mcast) |
| 2588 | { |
| 2589 | /* |
| 2590 | * copy bytes from the IP address into the MAC rewrite |
| 2591 | */ |
| 2592 | vnet_ip_mcast_fixup_header (IP4_MCAST_ADDR_MASK, |
| 2593 | adj0->rewrite_header.dst_mcast_offset, |
| 2594 | &ip0->dst_address.as_u32, (u8 *) ip0); |
| 2595 | vnet_ip_mcast_fixup_header (IP4_MCAST_ADDR_MASK, |
Zhiyong Yang | b2ecc5d | 2018-12-13 14:09:40 +0800 | [diff] [blame] | 2596 | adj1->rewrite_header.dst_mcast_offset, |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2597 | &ip1->dst_address.as_u32, (u8 *) ip1); |
| 2598 | } |
| 2599 | |
| 2600 | next += 2; |
| 2601 | b += 2; |
| 2602 | n_left_from -= 2; |
| 2603 | } |
| 2604 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2605 | while (n_left_from > 0) |
| 2606 | { |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2607 | ip_adjacency_t *adj0; |
| 2608 | ip4_header_t *ip0; |
| 2609 | u32 rw_len0, adj_index0, error0; |
| 2610 | u32 tx_sw_if_index0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2611 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2612 | adj_index0 = vnet_buffer (b[0])->ip.adj_index[VLIB_TX]; |
| 2613 | |
| 2614 | adj0 = adj_get (adj_index0); |
| 2615 | |
| 2616 | if (do_counters) |
| 2617 | vlib_prefetch_combined_counter (&adjacency_counters, |
| 2618 | thread_index, adj_index0); |
| 2619 | |
| 2620 | ip0 = vlib_buffer_get_current (b[0]); |
| 2621 | |
| 2622 | error0 = IP4_ERROR_NONE; |
| 2623 | |
| 2624 | ip4_ttl_and_checksum_check (b[0], ip0, next + 0, &error0); |
| 2625 | |
| 2626 | |
| 2627 | /* Update packet buffer attributes/set output interface. */ |
| 2628 | rw_len0 = adj0[0].rewrite_header.data_bytes; |
| 2629 | vnet_buffer (b[0])->ip.save_rewrite_length = rw_len0; |
| 2630 | |
| 2631 | /* Check MTU of outgoing interface. */ |
Andrew Yourtchenko | 6a7cff7 | 2018-10-12 16:09:22 +0200 | [diff] [blame] | 2632 | u16 ip0_len = clib_net_to_host_u16 (ip0->length); |
| 2633 | if (do_gso && (b[0]->flags & VNET_BUFFER_F_GSO)) |
| 2634 | ip0_len = gso_mtu_sz (b[0]); |
| 2635 | |
| 2636 | ip4_mtu_check (b[0], ip0_len, |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2637 | adj0[0].rewrite_header.max_l3_packet_bytes, |
| 2638 | ip0->flags_and_fragment_offset & |
| 2639 | clib_host_to_net_u16 (IP4_HEADER_FLAG_DONT_FRAGMENT), |
| 2640 | next + 0, &error0); |
| 2641 | |
| 2642 | if (is_mcast) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2643 | { |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2644 | error0 = ((adj0[0].rewrite_header.sw_if_index == |
| 2645 | vnet_buffer (b[0])->sw_if_index[VLIB_RX]) ? |
| 2646 | IP4_ERROR_SAME_INTERFACE : error0); |
| 2647 | } |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2648 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2649 | /* Don't adjust the buffer for ttl issue; icmp-error node wants |
Jim Thompson | f324dec | 2019-04-08 03:22:21 -0500 | [diff] [blame] | 2650 | * to see the IP header */ |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2651 | if (PREDICT_TRUE (error0 == IP4_ERROR_NONE)) |
| 2652 | { |
| 2653 | u32 next_index = adj0[0].rewrite_header.next_index; |
Zhiyong Yang | a665921 | 2019-06-25 22:41:55 -0400 | [diff] [blame] | 2654 | vlib_buffer_advance (b[0], -(word) rw_len0); |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2655 | tx_sw_if_index0 = adj0[0].rewrite_header.sw_if_index; |
| 2656 | 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] | 2657 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2658 | if (PREDICT_FALSE |
| 2659 | (adj0[0].rewrite_header.flags & VNET_REWRITE_HAS_FEATURES)) |
| 2660 | vnet_feature_arc_start (lm->output_feature_arc_index, |
| 2661 | tx_sw_if_index0, &next_index, b[0]); |
| 2662 | next[0] = next_index; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2663 | } |
Kingwel Xie | cb36a1d | 2019-03-20 03:45:47 -0400 | [diff] [blame] | 2664 | else |
| 2665 | { |
| 2666 | b[0]->error = error_node->errors[error0]; |
| 2667 | } |
Neale Ranns | 25edf14 | 2019-03-22 08:12:48 +0000 | [diff] [blame] | 2668 | if (is_midchain) |
| 2669 | { |
| 2670 | calc_checksums (vm, b[0]); |
| 2671 | } |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2672 | /* Guess we are only writing on simple Ethernet header. */ |
| 2673 | vnet_rewrite_one_header (adj0[0], ip0, sizeof (ethernet_header_t)); |
| 2674 | |
| 2675 | if (do_counters) |
| 2676 | vlib_increment_combined_counter |
| 2677 | (&adjacency_counters, |
| 2678 | thread_index, adj_index0, 1, |
| 2679 | vlib_buffer_length_in_chain (vm, b[0]) + rw_len0); |
| 2680 | |
| 2681 | if (is_midchain) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2682 | { |
Neale Ranns | 25edf14 | 2019-03-22 08:12:48 +0000 | [diff] [blame] | 2683 | if (adj0->sub_type.midchain.fixup_func) |
| 2684 | adj0->sub_type.midchain.fixup_func |
| 2685 | (vm, adj0, b[0], adj0->sub_type.midchain.fixup_data); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2686 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2687 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2688 | if (is_mcast) |
| 2689 | { |
| 2690 | /* |
| 2691 | * copy bytes from the IP address into the MAC rewrite |
| 2692 | */ |
| 2693 | vnet_ip_mcast_fixup_header (IP4_MCAST_ADDR_MASK, |
| 2694 | adj0->rewrite_header.dst_mcast_offset, |
| 2695 | &ip0->dst_address.as_u32, (u8 *) ip0); |
| 2696 | } |
| 2697 | |
| 2698 | next += 1; |
| 2699 | b += 1; |
| 2700 | n_left_from -= 1; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2701 | } |
| 2702 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2703 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2704 | /* Need to do trace after rewrites to pick up new packet data. */ |
| 2705 | if (node->flags & VLIB_NODE_FLAG_TRACE) |
Neale Ranns | f06aea5 | 2016-11-29 06:51:37 -0800 | [diff] [blame] | 2706 | ip4_forward_next_trace (vm, node, frame, VLIB_TX); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2707 | |
Damjan Marion | ca3ff1a | 2018-08-23 09:49:46 +0200 | [diff] [blame] | 2708 | vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2709 | return frame->n_vectors; |
| 2710 | } |
| 2711 | |
Andrew Yourtchenko | 6a7cff7 | 2018-10-12 16:09:22 +0200 | [diff] [blame] | 2712 | always_inline uword |
| 2713 | ip4_rewrite_inline (vlib_main_t * vm, |
| 2714 | vlib_node_runtime_t * node, |
| 2715 | vlib_frame_t * frame, |
| 2716 | int do_counters, int is_midchain, int is_mcast) |
| 2717 | { |
| 2718 | vnet_main_t *vnm = vnet_get_main (); |
| 2719 | if (PREDICT_FALSE (vnm->interface_main.gso_interface_count > 0)) |
| 2720 | return ip4_rewrite_inline_with_gso (vm, node, frame, do_counters, |
| 2721 | is_midchain, is_mcast, |
| 2722 | 1 /* do_gso */ ); |
| 2723 | else |
| 2724 | return ip4_rewrite_inline_with_gso (vm, node, frame, do_counters, |
| 2725 | is_midchain, is_mcast, |
| 2726 | 0 /* no do_gso */ ); |
| 2727 | } |
| 2728 | |
Dave Barach | 132d51d | 2016-07-07 10:10:17 -0400 | [diff] [blame] | 2729 | |
Neale Ranns | f06aea5 | 2016-11-29 06:51:37 -0800 | [diff] [blame] | 2730 | /** @brief IPv4 rewrite node. |
| 2731 | @node ip4-rewrite |
Dave Barach | 132d51d | 2016-07-07 10:10:17 -0400 | [diff] [blame] | 2732 | |
| 2733 | This is the IPv4 transit-rewrite node: decrement TTL, fix the ipv4 |
| 2734 | header checksum, fetch the ip adjacency, check the outbound mtu, |
| 2735 | apply the adjacency rewrite, and send pkts to the adjacency |
| 2736 | rewrite header's rewrite_next_index. |
| 2737 | |
| 2738 | @param vm vlib_main_t corresponding to the current thread |
| 2739 | @param node vlib_node_runtime_t |
| 2740 | @param frame vlib_frame_t whose contents should be dispatched |
| 2741 | |
| 2742 | @par Graph mechanics: buffer metadata, next index usage |
| 2743 | |
| 2744 | @em Uses: |
| 2745 | - <code>vnet_buffer(b)->ip.adj_index[VLIB_TX]</code> |
| 2746 | - the rewrite adjacency index |
| 2747 | - <code>adj->lookup_next_index</code> |
| 2748 | - Must be IP_LOOKUP_NEXT_REWRITE or IP_LOOKUP_NEXT_ARP, otherwise |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2749 | the packet will be dropped. |
Dave Barach | 132d51d | 2016-07-07 10:10:17 -0400 | [diff] [blame] | 2750 | - <code>adj->rewrite_header</code> |
| 2751 | - Rewrite string length, rewrite string, next_index |
| 2752 | |
| 2753 | @em Sets: |
| 2754 | - <code>b->current_data, b->current_length</code> |
| 2755 | - Updated net of applying the rewrite string |
| 2756 | |
| 2757 | <em>Next Indices:</em> |
| 2758 | - <code> adj->rewrite_header.next_index </code> |
Vijayabhaskar Katamreddy | ce07412 | 2017-11-15 13:50:26 -0800 | [diff] [blame] | 2759 | or @c ip4-drop |
Dave Barach | 132d51d | 2016-07-07 10:10:17 -0400 | [diff] [blame] | 2760 | */ |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2761 | |
| 2762 | VLIB_NODE_FN (ip4_rewrite_node) (vlib_main_t * vm, vlib_node_runtime_t * node, |
| 2763 | vlib_frame_t * frame) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2764 | { |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 2765 | if (adj_are_counters_enabled ()) |
| 2766 | return ip4_rewrite_inline (vm, node, frame, 1, 0, 0); |
| 2767 | else |
| 2768 | return ip4_rewrite_inline (vm, node, frame, 0, 0, 0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2769 | } |
| 2770 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2771 | VLIB_NODE_FN (ip4_rewrite_bcast_node) (vlib_main_t * vm, |
| 2772 | vlib_node_runtime_t * node, |
| 2773 | vlib_frame_t * frame) |
Neale Ranns | 1855b8e | 2018-07-11 10:31:26 -0700 | [diff] [blame] | 2774 | { |
| 2775 | if (adj_are_counters_enabled ()) |
| 2776 | return ip4_rewrite_inline (vm, node, frame, 1, 0, 0); |
| 2777 | else |
| 2778 | return ip4_rewrite_inline (vm, node, frame, 0, 0, 0); |
| 2779 | } |
| 2780 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2781 | VLIB_NODE_FN (ip4_midchain_node) (vlib_main_t * vm, |
| 2782 | vlib_node_runtime_t * node, |
| 2783 | vlib_frame_t * frame) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2784 | { |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 2785 | if (adj_are_counters_enabled ()) |
| 2786 | return ip4_rewrite_inline (vm, node, frame, 1, 1, 0); |
| 2787 | else |
| 2788 | return ip4_rewrite_inline (vm, node, frame, 0, 1, 0); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2789 | } |
| 2790 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2791 | VLIB_NODE_FN (ip4_rewrite_mcast_node) (vlib_main_t * vm, |
| 2792 | vlib_node_runtime_t * node, |
| 2793 | vlib_frame_t * frame) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2794 | { |
Neale Ranns | 9c6a613 | 2017-02-21 05:33:14 -0800 | [diff] [blame] | 2795 | if (adj_are_counters_enabled ()) |
| 2796 | return ip4_rewrite_inline (vm, node, frame, 1, 0, 1); |
| 2797 | else |
| 2798 | return ip4_rewrite_inline (vm, node, frame, 0, 0, 1); |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2799 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2800 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2801 | VLIB_NODE_FN (ip4_mcast_midchain_node) (vlib_main_t * vm, |
| 2802 | vlib_node_runtime_t * node, |
| 2803 | vlib_frame_t * frame) |
Neale Ranns | 0f26c5a | 2017-03-01 15:12:11 -0800 | [diff] [blame] | 2804 | { |
| 2805 | if (adj_are_counters_enabled ()) |
| 2806 | return ip4_rewrite_inline (vm, node, frame, 1, 1, 1); |
| 2807 | else |
| 2808 | return ip4_rewrite_inline (vm, node, frame, 0, 1, 1); |
| 2809 | } |
| 2810 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2811 | /* *INDENT-OFF* */ |
| 2812 | VLIB_REGISTER_NODE (ip4_rewrite_node) = { |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2813 | .name = "ip4-rewrite", |
| 2814 | .vector_size = sizeof (u32), |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2815 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2816 | .format_trace = format_ip4_rewrite_trace, |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2817 | |
Ole Troan | 313f7e2 | 2018-04-10 16:02:51 +0200 | [diff] [blame] | 2818 | .n_next_nodes = IP4_REWRITE_N_NEXT, |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2819 | .next_nodes = { |
Vijayabhaskar Katamreddy | ce07412 | 2017-11-15 13:50:26 -0800 | [diff] [blame] | 2820 | [IP4_REWRITE_NEXT_DROP] = "ip4-drop", |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2821 | [IP4_REWRITE_NEXT_ICMP_ERROR] = "ip4-icmp-error", |
Ole Troan | 313f7e2 | 2018-04-10 16:02:51 +0200 | [diff] [blame] | 2822 | [IP4_REWRITE_NEXT_FRAGMENT] = "ip4-frag", |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2823 | }, |
| 2824 | }; |
Neale Ranns | 1855b8e | 2018-07-11 10:31:26 -0700 | [diff] [blame] | 2825 | |
| 2826 | VLIB_REGISTER_NODE (ip4_rewrite_bcast_node) = { |
Neale Ranns | 1855b8e | 2018-07-11 10:31:26 -0700 | [diff] [blame] | 2827 | .name = "ip4-rewrite-bcast", |
| 2828 | .vector_size = sizeof (u32), |
| 2829 | |
| 2830 | .format_trace = format_ip4_rewrite_trace, |
| 2831 | .sibling_of = "ip4-rewrite", |
| 2832 | }; |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2833 | |
| 2834 | VLIB_REGISTER_NODE (ip4_rewrite_mcast_node) = { |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2835 | .name = "ip4-rewrite-mcast", |
| 2836 | .vector_size = sizeof (u32), |
| 2837 | |
| 2838 | .format_trace = format_ip4_rewrite_trace, |
| 2839 | .sibling_of = "ip4-rewrite", |
| 2840 | }; |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2841 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2842 | VLIB_REGISTER_NODE (ip4_mcast_midchain_node) = { |
Neale Ranns | 0f26c5a | 2017-03-01 15:12:11 -0800 | [diff] [blame] | 2843 | .name = "ip4-mcast-midchain", |
| 2844 | .vector_size = sizeof (u32), |
| 2845 | |
| 2846 | .format_trace = format_ip4_rewrite_trace, |
| 2847 | .sibling_of = "ip4-rewrite", |
| 2848 | }; |
Neale Ranns | 0f26c5a | 2017-03-01 15:12:11 -0800 | [diff] [blame] | 2849 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2850 | VLIB_REGISTER_NODE (ip4_midchain_node) = { |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2851 | .name = "ip4-midchain", |
| 2852 | .vector_size = sizeof (u32), |
| 2853 | .format_trace = format_ip4_forward_next_trace, |
| 2854 | .sibling_of = "ip4-rewrite", |
| 2855 | }; |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 2856 | /* *INDENT-ON */ |
Damjan Marion | 1c80e83 | 2016-05-11 23:07:18 +0200 | [diff] [blame] | 2857 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2858 | static int |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2859 | ip4_lookup_validate (ip4_address_t * a, u32 fib_index0) |
| 2860 | { |
| 2861 | ip4_fib_mtrie_t *mtrie0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2862 | ip4_fib_mtrie_leaf_t leaf0; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2863 | u32 lbi0; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2864 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2865 | mtrie0 = &ip4_fib_get (fib_index0)->mtrie; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2866 | |
Neale Ranns | 04a75e3 | 2017-03-23 06:46:01 -0700 | [diff] [blame] | 2867 | leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, a); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2868 | leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, a, 2); |
| 2869 | leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, a, 3); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2870 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 2871 | lbi0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2872 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2873 | 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] | 2874 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2875 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2876 | static clib_error_t * |
| 2877 | test_lookup_command_fn (vlib_main_t * vm, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2878 | unformat_input_t * input, vlib_cli_command_t * cmd) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2879 | { |
Billy McFall | 309fe06 | 2016-10-14 07:37:33 -0400 | [diff] [blame] | 2880 | ip4_fib_t *fib; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2881 | u32 table_id = 0; |
| 2882 | f64 count = 1; |
| 2883 | u32 n; |
| 2884 | int i; |
| 2885 | ip4_address_t ip4_base_address; |
| 2886 | u64 errors = 0; |
| 2887 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2888 | while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| 2889 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2890 | if (unformat (input, "table %d", &table_id)) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2891 | { |
| 2892 | /* Make sure the entry exists. */ |
| 2893 | fib = ip4_fib_get (table_id); |
| 2894 | if ((fib) && (fib->index != table_id)) |
| 2895 | return clib_error_return (0, "<fib-index> %d does not exist", |
| 2896 | table_id); |
| 2897 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2898 | else if (unformat (input, "count %f", &count)) |
| 2899 | ; |
| 2900 | |
| 2901 | else if (unformat (input, "%U", |
| 2902 | unformat_ip4_address, &ip4_base_address)) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2903 | ; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2904 | else |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2905 | return clib_error_return (0, "unknown input `%U'", |
| 2906 | format_unformat_error, input); |
| 2907 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2908 | |
| 2909 | n = count; |
| 2910 | |
| 2911 | for (i = 0; i < n; i++) |
| 2912 | { |
| 2913 | if (!ip4_lookup_validate (&ip4_base_address, table_id)) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2914 | errors++; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2915 | |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2916 | ip4_base_address.as_u32 = |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2917 | clib_host_to_net_u32 (1 + |
| 2918 | clib_net_to_host_u32 (ip4_base_address.as_u32)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2919 | } |
| 2920 | |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2921 | if (errors) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2922 | vlib_cli_output (vm, "%llu errors out of %d lookups\n", errors, n); |
| 2923 | else |
| 2924 | vlib_cli_output (vm, "No errors in %d lookups\n", n); |
| 2925 | |
| 2926 | return 0; |
| 2927 | } |
| 2928 | |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 2929 | /*? |
| 2930 | * Perform a lookup of an IPv4 Address (or range of addresses) in the |
| 2931 | * given FIB table to determine if there is a conflict with the |
| 2932 | * adjacency table. The fib-id can be determined by using the |
| 2933 | * '<em>show ip fib</em>' command. If fib-id is not entered, default value |
| 2934 | * of 0 is used. |
| 2935 | * |
| 2936 | * @todo This command uses fib-id, other commands use table-id (not |
| 2937 | * just a name, they are different indexes). Would like to change this |
| 2938 | * to table-id for consistency. |
| 2939 | * |
| 2940 | * @cliexpar |
| 2941 | * Example of how to run the test lookup command: |
| 2942 | * @cliexstart{test lookup 172.16.1.1 table 1 count 2} |
| 2943 | * No errors in 2 lookups |
| 2944 | * @cliexend |
| 2945 | ?*/ |
| 2946 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2947 | VLIB_CLI_COMMAND (lookup_test_command, static) = |
| 2948 | { |
| 2949 | .path = "test lookup", |
| 2950 | .short_help = "test lookup <ipv4-addr> [table <fib-id>] [count <nn>]", |
| 2951 | .function = test_lookup_command_fn, |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2952 | }; |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 2953 | /* *INDENT-ON* */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2954 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2955 | #ifndef CLIB_MARCH_VARIANT |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2956 | int |
| 2957 | vnet_set_ip4_flow_hash (u32 table_id, u32 flow_hash_config) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2958 | { |
Neale Ranns | 107e7d4 | 2017-04-11 09:55:19 -0700 | [diff] [blame] | 2959 | u32 fib_index; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2960 | |
Neale Ranns | 107e7d4 | 2017-04-11 09:55:19 -0700 | [diff] [blame] | 2961 | fib_index = fib_table_find (FIB_PROTOCOL_IP4, table_id); |
| 2962 | |
| 2963 | if (~0 == fib_index) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2964 | return VNET_API_ERROR_NO_SUCH_FIB; |
| 2965 | |
Neale Ranns | 227038a | 2017-04-21 01:07:59 -0700 | [diff] [blame] | 2966 | fib_table_set_flow_hash_config (fib_index, FIB_PROTOCOL_IP4, |
| 2967 | flow_hash_config); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2968 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2969 | return 0; |
| 2970 | } |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 2971 | #endif |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2972 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2973 | static clib_error_t * |
| 2974 | set_ip_flow_hash_command_fn (vlib_main_t * vm, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2975 | unformat_input_t * input, |
| 2976 | vlib_cli_command_t * cmd) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2977 | { |
| 2978 | int matched = 0; |
| 2979 | u32 table_id = 0; |
| 2980 | u32 flow_hash_config = 0; |
| 2981 | int rv; |
| 2982 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2983 | while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| 2984 | { |
| 2985 | if (unformat (input, "table %d", &table_id)) |
| 2986 | matched = 1; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2987 | #define _(a,v) \ |
| 2988 | else if (unformat (input, #a)) { flow_hash_config |= v; matched=1;} |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2989 | foreach_flow_hash_bit |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2990 | #undef _ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2991 | else |
| 2992 | break; |
| 2993 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2994 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2995 | if (matched == 0) |
| 2996 | return clib_error_return (0, "unknown input `%U'", |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 2997 | format_unformat_error, input); |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 2998 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 2999 | rv = vnet_set_ip4_flow_hash (table_id, flow_hash_config); |
| 3000 | switch (rv) |
| 3001 | { |
| 3002 | case 0: |
| 3003 | break; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 3004 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3005 | case VNET_API_ERROR_NO_SUCH_FIB: |
| 3006 | return clib_error_return (0, "no such FIB table %d", table_id); |
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 | default: |
| 3009 | clib_warning ("BUG: illegal flow hash config 0x%x", flow_hash_config); |
| 3010 | break; |
| 3011 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 3012 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3013 | return 0; |
| 3014 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 3015 | |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 3016 | /*? |
| 3017 | * Configure the set of IPv4 fields used by the flow hash. |
| 3018 | * |
| 3019 | * @cliexpar |
| 3020 | * Example of how to set the flow hash on a given table: |
| 3021 | * @cliexcmd{set ip flow-hash table 7 dst sport dport proto} |
| 3022 | * Example of display the configured flow hash: |
| 3023 | * @cliexstart{show ip fib} |
Billy McFall | ebb9a6a | 2016-10-17 11:35:32 -0400 | [diff] [blame] | 3024 | * ipv4-VRF:0, fib_index 0, flow hash: src dst sport dport proto |
| 3025 | * 0.0.0.0/0 |
| 3026 | * unicast-ip4-chain |
| 3027 | * [@0]: dpo-load-balance: [index:0 buckets:1 uRPF:0 to:[0:0]] |
| 3028 | * [0] [@0]: dpo-drop ip6 |
| 3029 | * 0.0.0.0/32 |
| 3030 | * unicast-ip4-chain |
| 3031 | * [@0]: dpo-load-balance: [index:1 buckets:1 uRPF:1 to:[0:0]] |
| 3032 | * [0] [@0]: dpo-drop ip6 |
| 3033 | * 224.0.0.0/8 |
| 3034 | * unicast-ip4-chain |
| 3035 | * [@0]: dpo-load-balance: [index:3 buckets:1 uRPF:3 to:[0:0]] |
| 3036 | * [0] [@0]: dpo-drop ip6 |
| 3037 | * 6.0.1.2/32 |
| 3038 | * unicast-ip4-chain |
| 3039 | * [@0]: dpo-load-balance: [index:30 buckets:1 uRPF:29 to:[0:0]] |
| 3040 | * [0] [@3]: arp-ipv4: via 6.0.0.1 af_packet0 |
| 3041 | * 7.0.0.1/32 |
| 3042 | * unicast-ip4-chain |
| 3043 | * [@0]: dpo-load-balance: [index:31 buckets:4 uRPF:30 to:[0:0]] |
| 3044 | * [0] [@3]: arp-ipv4: via 6.0.0.2 af_packet0 |
| 3045 | * [1] [@3]: arp-ipv4: via 6.0.0.2 af_packet0 |
| 3046 | * [2] [@3]: arp-ipv4: via 6.0.0.2 af_packet0 |
| 3047 | * [3] [@3]: arp-ipv4: via 6.0.0.1 af_packet0 |
| 3048 | * 240.0.0.0/8 |
| 3049 | * unicast-ip4-chain |
| 3050 | * [@0]: dpo-load-balance: [index:2 buckets:1 uRPF:2 to:[0:0]] |
| 3051 | * [0] [@0]: dpo-drop ip6 |
| 3052 | * 255.255.255.255/32 |
| 3053 | * unicast-ip4-chain |
| 3054 | * [@0]: dpo-load-balance: [index:4 buckets:1 uRPF:4 to:[0:0]] |
| 3055 | * [0] [@0]: dpo-drop ip6 |
| 3056 | * ipv4-VRF:7, fib_index 1, flow hash: dst sport dport proto |
| 3057 | * 0.0.0.0/0 |
| 3058 | * unicast-ip4-chain |
| 3059 | * [@0]: dpo-load-balance: [index:12 buckets:1 uRPF:11 to:[0:0]] |
| 3060 | * [0] [@0]: dpo-drop ip6 |
| 3061 | * 0.0.0.0/32 |
| 3062 | * unicast-ip4-chain |
| 3063 | * [@0]: dpo-load-balance: [index:13 buckets:1 uRPF:12 to:[0:0]] |
| 3064 | * [0] [@0]: dpo-drop ip6 |
| 3065 | * 172.16.1.0/24 |
| 3066 | * unicast-ip4-chain |
| 3067 | * [@0]: dpo-load-balance: [index:17 buckets:1 uRPF:16 to:[0:0]] |
| 3068 | * [0] [@4]: ipv4-glean: af_packet0 |
| 3069 | * 172.16.1.1/32 |
| 3070 | * unicast-ip4-chain |
| 3071 | * [@0]: dpo-load-balance: [index:18 buckets:1 uRPF:17 to:[1:84]] |
| 3072 | * [0] [@2]: dpo-receive: 172.16.1.1 on af_packet0 |
| 3073 | * 172.16.1.2/32 |
| 3074 | * unicast-ip4-chain |
| 3075 | * [@0]: dpo-load-balance: [index:21 buckets:1 uRPF:20 to:[0:0]] |
| 3076 | * [0] [@5]: ipv4 via 172.16.1.2 af_packet0: IP4: 02:fe:9e:70:7a:2b -> 26:a5:f6:9c:3a:36 |
| 3077 | * 172.16.2.0/24 |
| 3078 | * unicast-ip4-chain |
| 3079 | * [@0]: dpo-load-balance: [index:19 buckets:1 uRPF:18 to:[0:0]] |
| 3080 | * [0] [@4]: ipv4-glean: af_packet1 |
| 3081 | * 172.16.2.1/32 |
| 3082 | * unicast-ip4-chain |
| 3083 | * [@0]: dpo-load-balance: [index:20 buckets:1 uRPF:19 to:[0:0]] |
| 3084 | * [0] [@2]: dpo-receive: 172.16.2.1 on af_packet1 |
| 3085 | * 224.0.0.0/8 |
| 3086 | * unicast-ip4-chain |
| 3087 | * [@0]: dpo-load-balance: [index:15 buckets:1 uRPF:14 to:[0:0]] |
| 3088 | * [0] [@0]: dpo-drop ip6 |
| 3089 | * 240.0.0.0/8 |
| 3090 | * unicast-ip4-chain |
| 3091 | * [@0]: dpo-load-balance: [index:14 buckets:1 uRPF:13 to:[0:0]] |
| 3092 | * [0] [@0]: dpo-drop ip6 |
| 3093 | * 255.255.255.255/32 |
| 3094 | * unicast-ip4-chain |
| 3095 | * [@0]: dpo-load-balance: [index:16 buckets:1 uRPF:15 to:[0:0]] |
| 3096 | * [0] [@0]: dpo-drop ip6 |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 3097 | * @cliexend |
| 3098 | ?*/ |
| 3099 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3100 | VLIB_CLI_COMMAND (set_ip_flow_hash_command, static) = |
| 3101 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3102 | .path = "set ip flow-hash", |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 3103 | .short_help = |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 3104 | "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] | 3105 | .function = set_ip_flow_hash_command_fn, |
| 3106 | }; |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 3107 | /* *INDENT-ON* */ |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 3108 | |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 3109 | #ifndef CLIB_MARCH_VARIANT |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3110 | int |
| 3111 | vnet_set_ip4_classify_intfc (vlib_main_t * vm, u32 sw_if_index, |
| 3112 | u32 table_index) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3113 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3114 | vnet_main_t *vnm = vnet_get_main (); |
| 3115 | vnet_interface_main_t *im = &vnm->interface_main; |
| 3116 | ip4_main_t *ipm = &ip4_main; |
| 3117 | ip_lookup_main_t *lm = &ipm->lookup_main; |
| 3118 | vnet_classify_main_t *cm = &vnet_classify_main; |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 3119 | ip4_address_t *if_addr; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3120 | |
| 3121 | if (pool_is_free_index (im->sw_interfaces, sw_if_index)) |
| 3122 | return VNET_API_ERROR_NO_MATCHING_INTERFACE; |
| 3123 | |
| 3124 | if (table_index != ~0 && pool_is_free_index (cm->tables, table_index)) |
| 3125 | return VNET_API_ERROR_NO_SUCH_ENTRY; |
| 3126 | |
| 3127 | 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] | 3128 | 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] | 3129 | |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 3130 | if_addr = ip4_interface_first_address (ipm, sw_if_index, NULL); |
| 3131 | |
| 3132 | if (NULL != if_addr) |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3133 | { |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 3134 | fib_prefix_t pfx = { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3135 | .fp_len = 32, |
| 3136 | .fp_proto = FIB_PROTOCOL_IP4, |
| 3137 | .fp_addr.ip4 = *if_addr, |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 3138 | }; |
| 3139 | u32 fib_index; |
| 3140 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3141 | fib_index = fib_table_get_index_for_sw_if_index (FIB_PROTOCOL_IP4, |
| 3142 | sw_if_index); |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 3143 | |
| 3144 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3145 | if (table_index != (u32) ~ 0) |
| 3146 | { |
| 3147 | dpo_id_t dpo = DPO_INVALID; |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 3148 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3149 | dpo_set (&dpo, |
| 3150 | DPO_CLASSIFY, |
| 3151 | DPO_PROTO_IP4, |
| 3152 | classify_dpo_create (DPO_PROTO_IP4, table_index)); |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 3153 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3154 | fib_table_entry_special_dpo_add (fib_index, |
| 3155 | &pfx, |
| 3156 | FIB_SOURCE_CLASSIFY, |
| 3157 | FIB_ENTRY_FLAG_NONE, &dpo); |
| 3158 | dpo_reset (&dpo); |
| 3159 | } |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 3160 | else |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3161 | { |
| 3162 | fib_table_entry_special_remove (fib_index, |
| 3163 | &pfx, FIB_SOURCE_CLASSIFY); |
| 3164 | } |
| 3165 | } |
Neale Ranns | df089a8 | 2016-10-02 16:39:06 +0100 | [diff] [blame] | 3166 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3167 | return 0; |
| 3168 | } |
Damjan Marion | c9dad5d | 2018-08-11 22:10:29 +0200 | [diff] [blame] | 3169 | #endif |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3170 | |
| 3171 | static clib_error_t * |
| 3172 | set_ip_classify_command_fn (vlib_main_t * vm, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3173 | unformat_input_t * input, |
| 3174 | vlib_cli_command_t * cmd) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3175 | { |
| 3176 | u32 table_index = ~0; |
| 3177 | int table_index_set = 0; |
| 3178 | u32 sw_if_index = ~0; |
| 3179 | int rv; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 3180 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3181 | while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| 3182 | { |
| 3183 | if (unformat (input, "table-index %d", &table_index)) |
| 3184 | table_index_set = 1; |
| 3185 | else if (unformat (input, "intfc %U", unformat_vnet_sw_interface, |
| 3186 | vnet_get_main (), &sw_if_index)) |
| 3187 | ; |
| 3188 | else |
| 3189 | break; |
| 3190 | } |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 3191 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3192 | if (table_index_set == 0) |
| 3193 | return clib_error_return (0, "classify table-index must be specified"); |
| 3194 | |
| 3195 | if (sw_if_index == ~0) |
| 3196 | return clib_error_return (0, "interface / subif must be specified"); |
| 3197 | |
| 3198 | rv = vnet_set_ip4_classify_intfc (vm, sw_if_index, table_index); |
| 3199 | |
| 3200 | switch (rv) |
| 3201 | { |
| 3202 | case 0: |
| 3203 | break; |
| 3204 | |
| 3205 | case VNET_API_ERROR_NO_MATCHING_INTERFACE: |
| 3206 | return clib_error_return (0, "No such interface"); |
| 3207 | |
| 3208 | case VNET_API_ERROR_NO_SUCH_ENTRY: |
| 3209 | return clib_error_return (0, "No such classifier table"); |
| 3210 | } |
| 3211 | return 0; |
| 3212 | } |
| 3213 | |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 3214 | /*? |
| 3215 | * Assign a classification table to an interface. The classification |
| 3216 | * table is created using the '<em>classify table</em>' and '<em>classify session</em>' |
| 3217 | * commands. Once the table is create, use this command to filter packets |
| 3218 | * on an interface. |
| 3219 | * |
| 3220 | * @cliexpar |
| 3221 | * Example of how to assign a classification table to an interface: |
| 3222 | * @cliexcmd{set ip classify intfc GigabitEthernet2/0/0 table-index 1} |
| 3223 | ?*/ |
| 3224 | /* *INDENT-OFF* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3225 | VLIB_CLI_COMMAND (set_ip_classify_command, static) = |
| 3226 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3227 | .path = "set ip classify", |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 3228 | .short_help = |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 3229 | "set ip classify intfc <interface> table-index <classify-idx>", |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 3230 | .function = set_ip_classify_command_fn, |
| 3231 | }; |
Billy McFall | 0683c9c | 2016-10-13 08:27:31 -0400 | [diff] [blame] | 3232 | /* *INDENT-ON* */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3233 | |
Neale Ranns | 1ec3652 | 2017-11-29 05:20:37 -0800 | [diff] [blame] | 3234 | static clib_error_t * |
| 3235 | ip4_config (vlib_main_t * vm, unformat_input_t * input) |
| 3236 | { |
| 3237 | ip4_main_t *im = &ip4_main; |
| 3238 | uword heapsize = 0; |
| 3239 | |
| 3240 | while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| 3241 | { |
| 3242 | if (unformat (input, "heap-size %U", unformat_memory_size, &heapsize)) |
| 3243 | ; |
| 3244 | else |
| 3245 | return clib_error_return (0, |
| 3246 | "invalid heap-size parameter `%U'", |
| 3247 | format_unformat_error, input); |
| 3248 | } |
| 3249 | |
| 3250 | im->mtrie_heap_size = heapsize; |
| 3251 | |
| 3252 | return 0; |
| 3253 | } |
| 3254 | |
| 3255 | VLIB_EARLY_CONFIG_FUNCTION (ip4_config, "ip"); |
| 3256 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 3257 | /* |
| 3258 | * fd.io coding-style-patch-verification: ON |
| 3259 | * |
| 3260 | * Local Variables: |
| 3261 | * eval: (c-set-style "gnu") |
| 3262 | * End: |
| 3263 | */ |