Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1 | /* |
AkshayaNadahalli | ed4a2fd | 2016-08-09 13:38:04 +0530 | [diff] [blame] | 2 | * Copyright (c) 2016 Cisco and/or its affiliates. |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 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/ip6.h: ip6 main include file |
| 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 | #ifndef included_ip_ip6_h |
| 41 | #define included_ip_ip6_h |
| 42 | |
John Lo | 1edfba9 | 2016-08-27 01:11:57 -0400 | [diff] [blame] | 43 | #include <vlib/buffer.h> |
| 44 | #include <vnet/ethernet/packet.h> |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 45 | #include <vnet/ip/ip6_packet.h> |
Ole Troan | 944f548 | 2016-05-24 11:56:58 +0200 | [diff] [blame] | 46 | #include <vnet/ip/ip6_hop_by_hop_packet.h> |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 47 | #include <vnet/ip/lookup.h> |
Ole Troan | 944f548 | 2016-05-24 11:56:58 +0200 | [diff] [blame] | 48 | #include <stdbool.h> |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 49 | #include <vppinfra/bihash_24_8.h> |
| 50 | #include <vppinfra/bihash_template.h> |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 51 | #include <vnet/util/radix.h> |
Neale Ranns | cd35e53 | 2018-08-31 02:51:45 -0700 | [diff] [blame] | 52 | #include <vnet/util/throttle.h> |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 53 | |
| 54 | /* |
| 55 | * Default size of the ip6 fib hash table |
| 56 | */ |
| 57 | #define IP6_FIB_DEFAULT_HASH_NUM_BUCKETS (64 * 1024) |
| 58 | #define IP6_FIB_DEFAULT_HASH_MEMORY_SIZE (32<<20) |
| 59 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 60 | typedef struct |
| 61 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 62 | ip6_address_t addr; |
| 63 | u32 dst_address_length; |
| 64 | u32 vrf_index; |
| 65 | } ip6_fib_key_t; |
| 66 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 67 | typedef struct |
| 68 | { |
Dave Barach | eb987d3 | 2018-05-03 08:26:39 -0400 | [diff] [blame] | 69 | /* required for pool_get_aligned. */ |
| 70 | CLIB_CACHE_LINE_ALIGN_MARK (cacheline0); |
| 71 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 72 | /* Table ID (hash key) for this FIB. */ |
| 73 | u32 table_id; |
| 74 | |
| 75 | /* Index into FIB vector. */ |
| 76 | u32 index; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 77 | } ip6_fib_t; |
| 78 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 79 | typedef struct ip6_mfib_t |
| 80 | { |
| 81 | /* Table ID (hash key) for this FIB. */ |
| 82 | u32 table_id; |
| 83 | |
| 84 | /* Index into FIB vector. */ |
| 85 | u32 index; |
| 86 | |
| 87 | /* |
| 88 | * Pointer to the top of a radix tree. |
| 89 | * This cannot be realloc'd, hence it cannot be inlined with this table |
| 90 | */ |
| 91 | struct radix_node_head *rhead; |
| 92 | } ip6_mfib_t; |
| 93 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 94 | struct ip6_main_t; |
| 95 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 96 | typedef void (ip6_add_del_interface_address_function_t) |
| 97 | (struct ip6_main_t * im, |
| 98 | uword opaque, |
| 99 | u32 sw_if_index, |
| 100 | ip6_address_t * address, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 101 | u32 address_length, u32 if_address_index, u32 is_del); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 102 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 103 | typedef struct |
| 104 | { |
| 105 | ip6_add_del_interface_address_function_t *function; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 106 | uword function_opaque; |
| 107 | } ip6_add_del_interface_address_callback_t; |
| 108 | |
Neale Ranns | 1500254 | 2017-09-10 04:39:11 -0700 | [diff] [blame] | 109 | typedef void (ip6_table_bind_function_t) |
| 110 | (struct ip6_main_t * im, |
| 111 | uword opaque, u32 sw_if_index, u32 new_fib_index, u32 old_fib_index); |
| 112 | |
| 113 | typedef struct |
| 114 | { |
| 115 | ip6_table_bind_function_t *function; |
| 116 | uword function_opaque; |
| 117 | } ip6_table_bind_callback_t; |
| 118 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 119 | /** |
| 120 | * Enumeration of the FIB table instance types |
| 121 | */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 122 | typedef enum ip6_fib_table_instance_type_t_ |
| 123 | { |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 124 | /** |
| 125 | * This table stores the routes that are used to forward traffic. |
| 126 | * The key is the prefix, the result the adjacnecy to forward on. |
| 127 | */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 128 | IP6_FIB_TABLE_FWDING, |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 129 | /** |
| 130 | * The table that stores ALL routes learned by the DP. |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 131 | * Some of these routes may not be ready to install in forwarding |
| 132 | * at a given time. |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 133 | * The key in this table is the prefix, the result is the fib_entry_t |
| 134 | */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 135 | IP6_FIB_TABLE_NON_FWDING, |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 136 | } ip6_fib_table_instance_type_t; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 137 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 138 | #define IP6_FIB_NUM_TABLES (IP6_FIB_TABLE_NON_FWDING+1) |
| 139 | |
| 140 | /** |
| 141 | * A represenation of a single IP6 table |
| 142 | */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 143 | typedef struct ip6_fib_table_instance_t_ |
| 144 | { |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 145 | /* The hash table */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 146 | BVT (clib_bihash) ip6_hash; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 147 | |
| 148 | /* bitmap / refcounts / vector of mask widths to search */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 149 | uword *non_empty_dst_address_length_bitmap; |
| 150 | u8 *prefix_lengths_in_search_order; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 151 | i32 dst_address_length_refcounts[129]; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 152 | } ip6_fib_table_instance_t; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 153 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 154 | typedef struct ip6_main_t |
| 155 | { |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 156 | /** |
| 157 | * The two FIB tables; fwding and non-fwding |
| 158 | */ |
| 159 | ip6_fib_table_instance_t ip6_table[IP6_FIB_NUM_TABLES]; |
| 160 | |
| 161 | ip_lookup_main_t lookup_main; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 162 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 163 | /* Pool of FIBs. */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 164 | struct fib_table_t_ *fibs; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 165 | |
Neale Ranns | a3af337 | 2017-03-28 03:49:52 -0700 | [diff] [blame] | 166 | /* Pool of V6 FIBs. */ |
| 167 | ip6_fib_t *v6_fibs; |
| 168 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 169 | /** Vector of MFIBs. */ |
| 170 | struct mfib_table_t_ *mfibs; |
| 171 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 172 | /* Network byte orders subnet mask for each prefix length */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 173 | ip6_address_t fib_masks[129]; |
| 174 | |
| 175 | /* Table index indexed by software interface. */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 176 | u32 *fib_index_by_sw_if_index; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 177 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 178 | /** Table index indexed by software interface. */ |
| 179 | u32 *mfib_index_by_sw_if_index; |
| 180 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 181 | /* IP6 enabled count by software interface */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 182 | u8 *ip_enabled_by_sw_if_index; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 183 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 184 | /* Hash table mapping table id to fib index. |
| 185 | ID space is not necessarily dense; index space is dense. */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 186 | uword *fib_index_by_table_id; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 187 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 188 | /** Hash table mapping table id to multicast fib index. |
| 189 | ID space is not necessarily dense; index space is dense. */ |
| 190 | uword *mfib_index_by_table_id; |
| 191 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 192 | /* Hash table mapping interface rewrite adjacency index by sw if index. */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 193 | uword *interface_route_adj_index_by_sw_if_index; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 194 | |
| 195 | /* Functions to call when interface address changes. */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 196 | ip6_add_del_interface_address_callback_t |
| 197 | * add_del_interface_address_callbacks; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 198 | |
Neale Ranns | 1500254 | 2017-09-10 04:39:11 -0700 | [diff] [blame] | 199 | /** Functions to call when interface to table biding changes. */ |
| 200 | ip6_table_bind_callback_t *table_bind_callbacks; |
| 201 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 202 | /* Template used to generate IP6 neighbor solicitation packets. */ |
| 203 | vlib_packet_template_t discover_neighbor_packet_template; |
| 204 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 205 | /* ip6 lookup table config parameters */ |
| 206 | u32 lookup_table_nbuckets; |
| 207 | uword lookup_table_size; |
| 208 | |
| 209 | /* Seed for Jenkins hash used to compute ip6 flow hash. */ |
| 210 | u32 flow_hash_seed; |
| 211 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 212 | struct |
| 213 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 214 | /* TTL to use for host generated packets. */ |
| 215 | u8 ttl; |
| 216 | |
| 217 | u8 pad[3]; |
| 218 | } host_config; |
Ole Troan | 944f548 | 2016-05-24 11:56:58 +0200 | [diff] [blame] | 219 | |
| 220 | /* HBH processing enabled? */ |
| 221 | u8 hbh_enabled; |
Dave Barach | 49433ad | 2018-08-08 17:59:03 -0400 | [diff] [blame] | 222 | |
| 223 | /** ND throttling */ |
Neale Ranns | cd35e53 | 2018-08-31 02:51:45 -0700 | [diff] [blame] | 224 | throttle_t nd_throttle; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 225 | } ip6_main_t; |
| 226 | |
Dave Barach | 49433ad | 2018-08-08 17:59:03 -0400 | [diff] [blame] | 227 | #define ND_THROTTLE_BITS 512 |
| 228 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 229 | /* Global ip6 main structure. */ |
| 230 | extern ip6_main_t ip6_main; |
| 231 | |
| 232 | /* Global ip6 input node. Errors get attached to ip6 input node. */ |
| 233 | extern vlib_node_registration_t ip6_input_node; |
| 234 | extern vlib_node_registration_t ip6_rewrite_node; |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 235 | extern vlib_node_registration_t ip6_rewrite_mcast_node; |
Pierre Pfister | 0febaf1 | 2016-06-08 12:23:21 +0100 | [diff] [blame] | 236 | extern vlib_node_registration_t ip6_rewrite_local_node; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 237 | extern vlib_node_registration_t ip6_discover_neighbor_node; |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 238 | extern vlib_node_registration_t ip6_glean_node; |
| 239 | extern vlib_node_registration_t ip6_midchain_node; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 240 | |
Neale Ranns | d91c1db | 2017-07-31 02:30:50 -0700 | [diff] [blame] | 241 | extern void ip6_forward_next_trace (vlib_main_t * vm, |
| 242 | vlib_node_runtime_t * node, |
| 243 | vlib_frame_t * frame, |
| 244 | vlib_rx_or_tx_t which_adj_index); |
| 245 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 246 | always_inline uword |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 247 | ip6_destination_matches_route (const ip6_main_t * im, |
| 248 | const ip6_address_t * key, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 249 | const ip6_address_t * dest, uword dest_length) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 250 | { |
| 251 | int i; |
| 252 | for (i = 0; i < ARRAY_LEN (key->as_uword); i++) |
| 253 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 254 | if ((key->as_uword[i] ^ dest->as_uword[i]) & im-> |
| 255 | fib_masks[dest_length].as_uword[i]) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 256 | return 0; |
| 257 | } |
| 258 | return 1; |
| 259 | } |
| 260 | |
| 261 | always_inline uword |
| 262 | ip6_destination_matches_interface (ip6_main_t * im, |
| 263 | ip6_address_t * key, |
| 264 | ip_interface_address_t * ia) |
| 265 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 266 | ip6_address_t *a = ip_interface_address_get_address (&im->lookup_main, ia); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 267 | return ip6_destination_matches_route (im, key, a, ia->address_length); |
| 268 | } |
| 269 | |
| 270 | /* As above but allows for unaligned destinations (e.g. works right from IP header of packet). */ |
| 271 | always_inline uword |
| 272 | ip6_unaligned_destination_matches_route (ip6_main_t * im, |
| 273 | ip6_address_t * key, |
| 274 | ip6_address_t * dest, |
| 275 | uword dest_length) |
| 276 | { |
| 277 | int i; |
| 278 | for (i = 0; i < ARRAY_LEN (key->as_uword); i++) |
| 279 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 280 | if ((clib_mem_unaligned (&key->as_uword[i], uword) ^ dest->as_uword[i]) |
| 281 | & im->fib_masks[dest_length].as_uword[i]) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 282 | return 0; |
| 283 | } |
| 284 | return 1; |
| 285 | } |
| 286 | |
Neale Ranns | 53da221 | 2018-02-24 02:11:19 -0800 | [diff] [blame] | 287 | extern int ip6_get_ll_address (u32 sw_if_index, ip6_address_t * addr); |
| 288 | |
Pierre Pfister | d076f19 | 2016-06-22 12:58:30 +0100 | [diff] [blame] | 289 | always_inline int |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 290 | ip6_src_address_for_packet (ip_lookup_main_t * lm, |
Neale Ranns | 53da221 | 2018-02-24 02:11:19 -0800 | [diff] [blame] | 291 | u32 sw_if_index, |
| 292 | const ip6_address_t * dst, ip6_address_t * src) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 293 | { |
Neale Ranns | 53da221 | 2018-02-24 02:11:19 -0800 | [diff] [blame] | 294 | if (ip6_address_is_link_local_unicast (dst)) |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 295 | { |
Neale Ranns | 53da221 | 2018-02-24 02:11:19 -0800 | [diff] [blame] | 296 | return ip6_get_ll_address (sw_if_index, src); |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 297 | } |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 298 | else |
| 299 | { |
Neale Ranns | 53da221 | 2018-02-24 02:11:19 -0800 | [diff] [blame] | 300 | u32 if_add_index = |
| 301 | lm->if_address_pool_index_by_sw_if_index[sw_if_index]; |
| 302 | if (PREDICT_TRUE (if_add_index != ~0)) |
| 303 | { |
| 304 | ip_interface_address_t *if_add = |
| 305 | pool_elt_at_index (lm->if_address_pool, if_add_index); |
| 306 | ip6_address_t *if_ip = |
| 307 | ip_interface_address_get_address (lm, if_add); |
| 308 | *src = *if_ip; |
| 309 | return (!0); |
| 310 | } |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 311 | } |
Neale Ranns | 53da221 | 2018-02-24 02:11:19 -0800 | [diff] [blame] | 312 | |
| 313 | src->as_u64[0] = 0; |
| 314 | src->as_u64[1] = 0; |
| 315 | |
| 316 | return (0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 317 | } |
| 318 | |
| 319 | /* Find interface address which matches destination. */ |
| 320 | always_inline ip6_address_t * |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 321 | ip6_interface_address_matching_destination (ip6_main_t * im, |
| 322 | ip6_address_t * dst, |
| 323 | u32 sw_if_index, |
| 324 | ip_interface_address_t ** |
| 325 | result_ia) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 326 | { |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 327 | ip_lookup_main_t *lm = &im->lookup_main; |
| 328 | ip_interface_address_t *ia; |
| 329 | ip6_address_t *result = 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 330 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 331 | /* *INDENT-OFF* */ |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 332 | foreach_ip_interface_address (lm, ia, sw_if_index, |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 333 | 1 /* honor unnumbered */, |
| 334 | ({ |
| 335 | ip6_address_t * a = ip_interface_address_get_address (lm, ia); |
| 336 | if (ip6_destination_matches_route (im, dst, a, ia->address_length)) |
| 337 | { |
| 338 | result = a; |
| 339 | break; |
| 340 | } |
| 341 | })); |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 342 | /* *INDENT-ON* */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 343 | if (result_ia) |
| 344 | *result_ia = result ? ia : 0; |
| 345 | return result; |
| 346 | } |
| 347 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 348 | clib_error_t *ip6_add_del_interface_address (vlib_main_t * vm, |
| 349 | u32 sw_if_index, |
| 350 | ip6_address_t * address, |
| 351 | u32 address_length, u32 is_del); |
| 352 | void ip6_sw_interface_enable_disable (u32 sw_if_index, u32 is_enable); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 353 | |
Neale Ranns | 6cfc39c | 2017-02-14 01:44:25 -0800 | [diff] [blame] | 354 | /** |
| 355 | * @brie get first IPv6 interface address |
| 356 | */ |
| 357 | ip6_address_t *ip6_interface_first_address (ip6_main_t * im, u32 sw_if_index); |
| 358 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 359 | int ip6_address_compare (ip6_address_t * a1, ip6_address_t * a2); |
| 360 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 361 | clib_error_t *ip6_probe_neighbor (vlib_main_t * vm, ip6_address_t * dst, |
John Lo | 8637634 | 2018-06-11 20:14:49 -0400 | [diff] [blame] | 362 | u32 sw_if_index, u8 refresh); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 363 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 364 | uword |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 365 | ip6_udp_register_listener (vlib_main_t * vm, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 366 | u16 dst_port, u32 next_node_index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 367 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 368 | u16 ip6_tcp_udp_icmp_compute_checksum (vlib_main_t * vm, vlib_buffer_t * p0, |
| 369 | ip6_header_t * ip0, |
| 370 | int *bogus_lengthp); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 371 | |
| 372 | void ip6_register_protocol (u32 protocol, u32 node_index); |
| 373 | |
| 374 | serialize_function_t serialize_vnet_ip6_main, unserialize_vnet_ip6_main; |
| 375 | |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 376 | void ip6_ethernet_update_adjacency (vnet_main_t * vnm, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 377 | u32 sw_if_index, u32 ai); |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 378 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 379 | |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 380 | void |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 381 | ip6_link_local_address_from_ethernet_mac_address (ip6_address_t * ip, |
| 382 | u8 * mac); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 383 | |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 384 | void |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 385 | ip6_ethernet_mac_address_from_link_local_address (u8 * mac, |
| 386 | ip6_address_t * ip); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 387 | |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 388 | int vnet_set_ip6_flow_hash (u32 table_id, |
| 389 | flow_hash_config_t flow_hash_config); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 390 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 391 | clib_error_t *enable_ip6_interface (vlib_main_t * vm, u32 sw_if_index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 392 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 393 | clib_error_t *disable_ip6_interface (vlib_main_t * vm, u32 sw_if_index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 394 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 395 | int ip6_interface_enabled (vlib_main_t * vm, u32 sw_if_index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 396 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 397 | clib_error_t *set_ip6_link_local_address (vlib_main_t * vm, |
| 398 | u32 sw_if_index, |
Neale Ranns | 7515228 | 2017-01-09 01:00:45 -0800 | [diff] [blame] | 399 | ip6_address_t * address); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 400 | |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 401 | int vnet_add_del_ip6_nd_change_event (vnet_main_t * vnm, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 402 | void *data_callback, |
John Lo | 1edfba9 | 2016-08-27 01:11:57 -0400 | [diff] [blame] | 403 | u32 pid, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 404 | void *address_arg, |
John Lo | 1edfba9 | 2016-08-27 01:11:57 -0400 | [diff] [blame] | 405 | uword node_index, |
| 406 | uword type_opaque, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 407 | uword data, int is_add); |
John Lo | 1edfba9 | 2016-08-27 01:11:57 -0400 | [diff] [blame] | 408 | |
| 409 | int vnet_ip6_nd_term (vlib_main_t * vm, |
| 410 | vlib_node_runtime_t * node, |
| 411 | vlib_buffer_t * p0, |
| 412 | ethernet_header_t * eth, |
Eyal Bari | a0623f8 | 2017-03-30 03:05:06 +0300 | [diff] [blame] | 413 | ip6_header_t * ip, u32 sw_if_index, u16 bd_index); |
John Lo | 1edfba9 | 2016-08-27 01:11:57 -0400 | [diff] [blame] | 414 | |
Steven | 9f781d8 | 2018-06-05 11:09:32 -0700 | [diff] [blame] | 415 | void send_ip6_na (vlib_main_t * vm, u32 sw_if_index); |
Neale Ranns | 25b0494 | 2018-04-04 09:34:50 -0700 | [diff] [blame] | 416 | void send_ip6_na_w_addr (vlib_main_t * vm, |
Steven | 9f781d8 | 2018-06-05 11:09:32 -0700 | [diff] [blame] | 417 | const ip6_address_t * addr, u32 sw_if_index); |
John Lo | 8b81cb4 | 2017-06-26 01:40:20 -0400 | [diff] [blame] | 418 | |
John Lo | 2b81eb8 | 2017-01-30 13:12:10 -0500 | [diff] [blame] | 419 | u8 *format_ip6_forward_next_trace (u8 * s, va_list * args); |
| 420 | |
| 421 | u32 ip6_tcp_udp_icmp_validate_checksum (vlib_main_t * vm, vlib_buffer_t * p0); |
| 422 | |
Neale Ranns | d91c1db | 2017-07-31 02:30:50 -0700 | [diff] [blame] | 423 | void ip6_punt_policer_add_del (u8 is_add, u32 policer_index); |
| 424 | void ip6_punt_redirect_add (u32 rx_sw_if_index, |
| 425 | u32 tx_sw_if_index, ip46_address_t * nh); |
| 426 | void ip6_punt_redirect_del (u32 rx_sw_if_index); |
| 427 | |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 428 | int vnet_set_ip6_classify_intfc (vlib_main_t * vm, u32 sw_if_index, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 429 | u32 table_index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 430 | extern vlib_node_registration_t ip6_lookup_node; |
| 431 | |
| 432 | /* Compute flow hash. We'll use it to select which Sponge to use for this |
| 433 | flow. And other things. */ |
| 434 | always_inline u32 |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 435 | ip6_compute_flow_hash (const ip6_header_t * ip, |
| 436 | flow_hash_config_t flow_hash_config) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 437 | { |
AkshayaNadahalli | 1b56352 | 2017-01-23 22:05:35 +0530 | [diff] [blame] | 438 | tcp_header_t *tcp; |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 439 | u64 a, b, c; |
| 440 | u64 t1, t2; |
AkshayaNadahalli | 1b56352 | 2017-01-23 22:05:35 +0530 | [diff] [blame] | 441 | uword is_tcp_udp = 0; |
| 442 | u8 protocol = ip->protocol; |
| 443 | |
| 444 | if (PREDICT_TRUE |
| 445 | ((ip->protocol == IP_PROTOCOL_TCP) |
| 446 | || (ip->protocol == IP_PROTOCOL_UDP))) |
| 447 | { |
| 448 | is_tcp_udp = 1; |
| 449 | tcp = (void *) (ip + 1); |
| 450 | } |
| 451 | else if (ip->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) |
| 452 | { |
| 453 | ip6_hop_by_hop_header_t *hbh = (ip6_hop_by_hop_header_t *) (ip + 1); |
| 454 | if ((hbh->protocol == IP_PROTOCOL_TCP) || |
| 455 | (hbh->protocol == IP_PROTOCOL_UDP)) |
| 456 | { |
| 457 | is_tcp_udp = 1; |
| 458 | tcp = (tcp_header_t *) ((u8 *) hbh + ((hbh->length + 1) << 3)); |
| 459 | } |
| 460 | protocol = hbh->protocol; |
| 461 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 462 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 463 | t1 = (ip->src_address.as_u64[0] ^ ip->src_address.as_u64[1]); |
| 464 | t1 = (flow_hash_config & IP_FLOW_HASH_SRC_ADDR) ? t1 : 0; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 465 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 466 | t2 = (ip->dst_address.as_u64[0] ^ ip->dst_address.as_u64[1]); |
| 467 | t2 = (flow_hash_config & IP_FLOW_HASH_DST_ADDR) ? t2 : 0; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 468 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 469 | a = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ? t2 : t1; |
| 470 | b = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ? t1 : t2; |
AkshayaNadahalli | 1b56352 | 2017-01-23 22:05:35 +0530 | [diff] [blame] | 471 | b ^= (flow_hash_config & IP_FLOW_HASH_PROTO) ? protocol : 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 472 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 473 | t1 = is_tcp_udp ? tcp->src : 0; |
| 474 | t2 = is_tcp_udp ? tcp->dst : 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 475 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 476 | t1 = (flow_hash_config & IP_FLOW_HASH_SRC_PORT) ? t1 : 0; |
| 477 | t2 = (flow_hash_config & IP_FLOW_HASH_DST_PORT) ? t2 : 0; |
Dave Barach | 75fc854 | 2016-10-11 16:16:02 -0400 | [diff] [blame] | 478 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 479 | c = (flow_hash_config & IP_FLOW_HASH_REVERSE_SRC_DST) ? |
| 480 | ((t1 << 16) | t2) : ((t2 << 16) | t1); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 481 | |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 482 | hash_mix64 (a, b, c); |
| 483 | return (u32) c; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 484 | } |
| 485 | |
Shwetha Bhandari | 78372a9 | 2017-01-18 12:43:54 +0530 | [diff] [blame] | 486 | /* ip6_locate_header |
| 487 | * |
| 488 | * This function is to search for the header specified by the protocol number |
| 489 | * in find_hdr_type. |
| 490 | * This is used to locate a specific IPv6 extension header |
| 491 | * or to find transport layer header. |
| 492 | * 1. If the find_hdr_type < 0 then it finds and returns the protocol number and |
| 493 | * offset stored in *offset of the transport or ESP header in the chain if |
| 494 | * found. |
| 495 | * 2. If a header with find_hdr_type > 0 protocol number is found then the |
| 496 | * offset is stored in *offset and protocol number of the header is |
| 497 | * returned. |
| 498 | * 3. If find_hdr_type is not found or packet is malformed or |
| 499 | * it is a non-first fragment -1 is returned. |
| 500 | */ |
| 501 | always_inline int |
| 502 | ip6_locate_header (vlib_buffer_t * p0, |
| 503 | ip6_header_t * ip0, int find_hdr_type, u32 * offset) |
| 504 | { |
| 505 | u8 next_proto = ip0->protocol; |
| 506 | u8 *next_header; |
| 507 | u8 done = 0; |
| 508 | u32 cur_offset; |
| 509 | u8 *temp_nxthdr = 0; |
| 510 | u32 exthdr_len = 0; |
| 511 | |
| 512 | next_header = ip6_next_header (ip0); |
| 513 | cur_offset = sizeof (ip6_header_t); |
| 514 | while (1) |
| 515 | { |
| 516 | done = (next_proto == find_hdr_type); |
| 517 | if (PREDICT_FALSE |
| 518 | (next_header >= |
| 519 | (u8 *) vlib_buffer_get_current (p0) + p0->current_length)) |
| 520 | { |
| 521 | //A malicious packet could set an extension header with a too big size |
| 522 | return (-1); |
| 523 | } |
| 524 | if (done) |
| 525 | break; |
| 526 | if ((!ip6_ext_hdr (next_proto)) || next_proto == IP_PROTOCOL_IP6_NONXT) |
| 527 | { |
| 528 | if (find_hdr_type < 0) |
| 529 | break; |
| 530 | return -1; |
| 531 | } |
| 532 | if (next_proto == IP_PROTOCOL_IPV6_FRAGMENTATION) |
| 533 | { |
| 534 | ip6_frag_hdr_t *frag_hdr = (ip6_frag_hdr_t *) next_header; |
| 535 | u16 frag_off = ip6_frag_hdr_offset (frag_hdr); |
| 536 | /* Non first fragment return -1 */ |
| 537 | if (frag_off) |
| 538 | return (-1); |
| 539 | exthdr_len = sizeof (ip6_frag_hdr_t); |
| 540 | temp_nxthdr = next_header + exthdr_len; |
| 541 | } |
| 542 | else if (next_proto == IP_PROTOCOL_IPSEC_AH) |
| 543 | { |
| 544 | exthdr_len = |
| 545 | ip6_ext_authhdr_len (((ip6_ext_header_t *) next_header)); |
| 546 | temp_nxthdr = next_header + exthdr_len; |
| 547 | } |
| 548 | else |
| 549 | { |
| 550 | exthdr_len = |
| 551 | ip6_ext_header_len (((ip6_ext_header_t *) next_header)); |
| 552 | temp_nxthdr = next_header + exthdr_len; |
| 553 | } |
| 554 | next_proto = ((ip6_ext_header_t *) next_header)->next_hdr; |
| 555 | next_header = temp_nxthdr; |
| 556 | cur_offset += exthdr_len; |
| 557 | } |
| 558 | |
| 559 | *offset = cur_offset; |
| 560 | return (next_proto); |
| 561 | } |
| 562 | |
| 563 | u8 *format_ip6_hop_by_hop_ext_hdr (u8 * s, va_list * args); |
Ole Troan | 944f548 | 2016-05-24 11:56:58 +0200 | [diff] [blame] | 564 | /* |
| 565 | * Hop-by-Hop handling |
| 566 | */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 567 | typedef struct |
| 568 | { |
Ole Troan | 944f548 | 2016-05-24 11:56:58 +0200 | [diff] [blame] | 569 | /* Array of function pointers to HBH option handling routines */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 570 | int (*options[256]) (vlib_buffer_t * b, ip6_header_t * ip, |
| 571 | ip6_hop_by_hop_option_t * opt); |
| 572 | u8 *(*trace[256]) (u8 * s, ip6_hop_by_hop_option_t * opt); |
Shwetha | a91cbe6 | 2016-08-08 15:51:04 +0100 | [diff] [blame] | 573 | uword next_override; |
Ole Troan | 944f548 | 2016-05-24 11:56:58 +0200 | [diff] [blame] | 574 | } ip6_hop_by_hop_main_t; |
| 575 | |
| 576 | extern ip6_hop_by_hop_main_t ip6_hop_by_hop_main; |
| 577 | |
| 578 | int ip6_hbh_register_option (u8 option, |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 579 | int options (vlib_buffer_t * b, |
| 580 | ip6_header_t * ip, |
| 581 | ip6_hop_by_hop_option_t * opt), |
| 582 | u8 * trace (u8 * s, |
| 583 | ip6_hop_by_hop_option_t * opt)); |
Ole Troan | 944f548 | 2016-05-24 11:56:58 +0200 | [diff] [blame] | 584 | int ip6_hbh_unregister_option (u8 option); |
Shwetha | a91cbe6 | 2016-08-08 15:51:04 +0100 | [diff] [blame] | 585 | void ip6_hbh_set_next_override (uword next); |
Ole Troan | 944f548 | 2016-05-24 11:56:58 +0200 | [diff] [blame] | 586 | |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 587 | /** |
| 588 | * Push IPv6 header to buffer |
| 589 | * |
| 590 | * @param vm - vlib_main |
| 591 | * @param b - buffer to write the header to |
| 592 | * @param src - source IP |
| 593 | * @param dst - destination IP |
| 594 | * @param prot - payload proto |
| 595 | * |
| 596 | * @return - pointer to start of IP header |
| 597 | */ |
| 598 | always_inline void * |
| 599 | vlib_buffer_push_ip6 (vlib_main_t * vm, vlib_buffer_t * b, |
| 600 | ip6_address_t * src, ip6_address_t * dst, int proto) |
| 601 | { |
| 602 | ip6_header_t *ip6h; |
| 603 | u16 payload_length; |
| 604 | |
| 605 | /* make some room */ |
| 606 | ip6h = vlib_buffer_push_uninit (b, sizeof (ip6_header_t)); |
| 607 | |
| 608 | ip6h->ip_version_traffic_class_and_flow_label = |
| 609 | clib_host_to_net_u32 (0x6 << 28); |
| 610 | |
| 611 | /* calculate ip6 payload length */ |
| 612 | payload_length = vlib_buffer_length_in_chain (vm, b); |
| 613 | payload_length -= sizeof (*ip6h); |
| 614 | |
| 615 | ip6h->payload_length = clib_host_to_net_u16 (payload_length); |
| 616 | |
| 617 | ip6h->hop_limit = 0xff; |
| 618 | ip6h->protocol = proto; |
| 619 | clib_memcpy (ip6h->src_address.as_u8, src->as_u8, |
| 620 | sizeof (ip6h->src_address)); |
| 621 | clib_memcpy (ip6h->dst_address.as_u8, dst->as_u8, |
| 622 | sizeof (ip6h->src_address)); |
Florin Coras | fdbc382 | 2017-07-27 00:34:12 -0700 | [diff] [blame] | 623 | b->flags |= VNET_BUFFER_F_IS_IP6; |
Dave Barach | 68b0fb0 | 2017-02-28 15:15:56 -0500 | [diff] [blame] | 624 | |
| 625 | return ip6h; |
| 626 | } |
| 627 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 628 | #endif /* included_ip_ip6_h */ |
Dave Barach | d7cb1b5 | 2016-12-09 09:52:16 -0500 | [diff] [blame] | 629 | |
| 630 | /* |
| 631 | * fd.io coding-style-patch-verification: ON |
| 632 | * |
| 633 | * Local Variables: |
| 634 | * eval: (c-set-style "gnu") |
| 635 | * End: |
| 636 | */ |