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 | * rewrite.h: packet rewrite |
| 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_vnet_rewrite_h |
| 41 | #define included_vnet_rewrite_h |
| 42 | |
| 43 | #include <vlib/vlib.h> |
| 44 | #include <vnet/l3_types.h> |
| 45 | |
| 46 | /* Consider using vector types for speed? */ |
| 47 | typedef uword vnet_rewrite_data_t; |
| 48 | |
Neale Ranns | b069a69 | 2017-03-15 12:34:25 -0400 | [diff] [blame] | 49 | /** |
| 50 | * Flags associated with the rewrite/adjacency |
| 51 | */ |
| 52 | typedef enum vnet_rewrite_flags_t_ |
| 53 | { |
| 54 | /** |
| 55 | * This adjacency/interface has output features configured |
| 56 | */ |
| 57 | VNET_REWRITE_HAS_FEATURES = (1 << 0), |
| 58 | } __attribute__ ((packed)) vnet_rewrite_flags_t; |
| 59 | |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 60 | /* *INDENT-OFF* */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 61 | typedef CLIB_PACKED (struct { |
| 62 | /* Interface to mark re-written packets with. */ |
| 63 | u32 sw_if_index; |
| 64 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 65 | /* Next node to feed after packet rewrite is done. */ |
| 66 | u16 next_index; |
| 67 | |
| 68 | /* Number of bytes in rewrite data. */ |
| 69 | u16 data_bytes; |
| 70 | |
| 71 | /* Max packet size layer 3 (MTU) for output interface. |
| 72 | Used for MTU check after packet rewrite. */ |
| 73 | u16 max_l3_packet_bytes; |
| 74 | |
Neale Ranns | 2e7fbcc | 2017-03-15 04:22:25 -0700 | [diff] [blame] | 75 | /* Data-plane flags on the adjacency/rewrite */ |
Neale Ranns | b069a69 | 2017-03-15 12:34:25 -0400 | [diff] [blame] | 76 | vnet_rewrite_flags_t flags; |
| 77 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 78 | /* When dynamically writing a multicast destination L2 addresss |
Neale Ranns | 2e7fbcc | 2017-03-15 04:22:25 -0700 | [diff] [blame] | 79 | * this is the offset from the IP address at which to write in the |
| 80 | * IP->MAC address translation. |
| 81 | */ |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 82 | u8 dst_mcast_offset; |
| 83 | |
Neale Ranns | 2e7fbcc | 2017-03-15 04:22:25 -0700 | [diff] [blame] | 84 | /* The mask to apply to the lower 4 bytes of the IP address before ORing |
| 85 | * into the destinaiton MAC address */ |
| 86 | u32 dst_mcast_mask; |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 87 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 88 | /* Rewrite string starting at end and going backwards. */ |
| 89 | u8 data[0]; |
| 90 | }) vnet_rewrite_header_t; |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 91 | /* *INDENT-ON* */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 92 | |
Neale Ranns | b069a69 | 2017-03-15 12:34:25 -0400 | [diff] [blame] | 93 | /** |
| 94 | * At 16 bytes of rewrite herader we have enought space left for a IPv6 |
| 95 | * (40 bytes) + LISP-GPE (8 bytes) in the cache line |
| 96 | */ |
| 97 | STATIC_ASSERT (sizeof (vnet_rewrite_header_t) <= 16, |
| 98 | "Rewrite header too big"); |
| 99 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 100 | /* |
| 101 | Helper macro for declaring rewrite string w/ given max-size. |
| 102 | |
| 103 | Typical usage: |
| 104 | typedef struct { |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 105 | // |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 106 | int a, b; |
| 107 | |
| 108 | // Total adjacency is 64 bytes. |
| 109 | vnet_rewrite_declare(64 - 2*sizeof(int)) rw; |
| 110 | } my_adjacency_t; |
| 111 | */ |
| 112 | #define vnet_declare_rewrite(total_bytes) \ |
| 113 | struct { \ |
| 114 | vnet_rewrite_header_t rewrite_header; \ |
| 115 | \ |
| 116 | u8 rewrite_data[(total_bytes) - sizeof (vnet_rewrite_header_t)]; \ |
| 117 | } |
| 118 | |
| 119 | always_inline void |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 120 | vnet_rewrite_clear_data_internal (vnet_rewrite_header_t * rw, int max_size) |
| 121 | { |
| 122 | /* Sanity check values carefully for this memset operation */ |
| 123 | ASSERT ((max_size > 0) && (max_size < VLIB_BUFFER_PRE_DATA_SIZE)); |
| 124 | |
| 125 | rw->data_bytes = 0; |
| 126 | memset (rw->data, 0xfe, max_size); |
| 127 | } |
| 128 | |
| 129 | always_inline void |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 130 | vnet_rewrite_set_data_internal (vnet_rewrite_header_t * rw, |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 131 | int max_size, void *data, int data_bytes) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 132 | { |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 133 | /* Sanity check values carefully for this memset operation */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 134 | ASSERT ((max_size > 0) && (max_size < VLIB_BUFFER_PRE_DATA_SIZE)); |
| 135 | ASSERT ((data_bytes >= 0) && (data_bytes < max_size)); |
| 136 | |
| 137 | rw->data_bytes = data_bytes; |
Damjan Marion | f1213b8 | 2016-03-13 02:22:06 +0100 | [diff] [blame] | 138 | clib_memcpy (rw->data + max_size - data_bytes, data, data_bytes); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 139 | memset (rw->data, 0xfe, max_size - data_bytes); |
| 140 | } |
| 141 | |
| 142 | #define vnet_rewrite_set_data(rw,data,data_bytes) \ |
| 143 | vnet_rewrite_set_data_internal (&((rw).rewrite_header), \ |
| 144 | sizeof ((rw).rewrite_data), \ |
| 145 | (data), \ |
| 146 | (data_bytes)) |
| 147 | |
| 148 | always_inline void * |
| 149 | vnet_rewrite_get_data_internal (vnet_rewrite_header_t * rw, int max_size) |
| 150 | { |
| 151 | ASSERT (rw->data_bytes <= max_size); |
| 152 | return rw->data + max_size - rw->data_bytes; |
| 153 | } |
| 154 | |
| 155 | #define vnet_rewrite_get_data(rw) \ |
| 156 | vnet_rewrite_get_data_internal (&((rw).rewrite_header), sizeof ((rw).rewrite_data)) |
| 157 | |
| 158 | always_inline void |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 159 | vnet_rewrite_copy_one (vnet_rewrite_data_t * p0, vnet_rewrite_data_t * rw0, |
| 160 | int i) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 161 | { |
| 162 | p0[-i] = rw0[-i]; |
| 163 | } |
| 164 | |
| 165 | void vnet_rewrite_copy_slow_path (vnet_rewrite_data_t * p0, |
| 166 | vnet_rewrite_data_t * rw0, |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 167 | word n_left, uword most_likely_size); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 168 | |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 169 | /* *INDENT-OFF* */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 170 | typedef CLIB_PACKED (struct { |
| 171 | u64 a; |
| 172 | u32 b; |
| 173 | u16 c; |
| 174 | }) eh_copy_t; |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 175 | /* *INDENT-ON* */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 176 | |
| 177 | always_inline void |
| 178 | _vnet_rewrite_one_header (vnet_rewrite_header_t * h0, |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 179 | void *packet0, int max_size, int most_likely_size) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 180 | { |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 181 | vnet_rewrite_data_t *p0 = packet0; |
| 182 | vnet_rewrite_data_t *rw0 = (vnet_rewrite_data_t *) (h0->data + max_size); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 183 | word n_left0; |
| 184 | |
| 185 | /* 0xfefe => poisoned adjacency => crash */ |
| 186 | ASSERT (h0->data_bytes != 0xfefe); |
| 187 | |
| 188 | if (PREDICT_TRUE (h0->data_bytes == sizeof (eh_copy_t))) |
| 189 | { |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 190 | eh_copy_t *s, *d; |
| 191 | s = (eh_copy_t *) (h0->data + max_size - sizeof (eh_copy_t)); |
| 192 | d = (eh_copy_t *) (((u8 *) packet0) - sizeof (eh_copy_t)); |
Damjan Marion | f1213b8 | 2016-03-13 02:22:06 +0100 | [diff] [blame] | 193 | clib_memcpy (d, s, sizeof (eh_copy_t)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 194 | return; |
| 195 | } |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 196 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 197 | |
| 198 | #define _(i) \ |
| 199 | do { \ |
| 200 | if (most_likely_size > ((i)-1)*sizeof (vnet_rewrite_data_t)) \ |
| 201 | vnet_rewrite_copy_one (p0, rw0, (i)); \ |
| 202 | } while (0) |
| 203 | |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 204 | _(4); |
| 205 | _(3); |
| 206 | _(2); |
| 207 | _(1); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 208 | |
| 209 | #undef _ |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 210 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 211 | n_left0 = (int) |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 212 | (((int) h0->data_bytes - most_likely_size) + (sizeof (rw0[0]) - 1)) |
| 213 | / (int) sizeof (rw0[0]); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 214 | if (PREDICT_FALSE (n_left0 > 0)) |
| 215 | vnet_rewrite_copy_slow_path (p0, rw0, n_left0, most_likely_size); |
| 216 | } |
| 217 | |
| 218 | always_inline void |
| 219 | _vnet_rewrite_two_headers (vnet_rewrite_header_t * h0, |
| 220 | vnet_rewrite_header_t * h1, |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 221 | void *packet0, |
| 222 | void *packet1, int max_size, int most_likely_size) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 223 | { |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 224 | vnet_rewrite_data_t *p0 = packet0; |
| 225 | vnet_rewrite_data_t *p1 = packet1; |
| 226 | vnet_rewrite_data_t *rw0 = (vnet_rewrite_data_t *) (h0->data + max_size); |
| 227 | vnet_rewrite_data_t *rw1 = (vnet_rewrite_data_t *) (h1->data + max_size); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 228 | word n_left0, n_left1; |
| 229 | int slow_path; |
| 230 | |
| 231 | /* 0xfefe => poisoned adjacency => crash */ |
| 232 | ASSERT (h0->data_bytes != 0xfefe); |
| 233 | ASSERT (h1->data_bytes != 0xfefe); |
| 234 | |
| 235 | /* Arithmetic calculation: bytes0 == bytes1 == 14 */ |
| 236 | slow_path = h0->data_bytes ^ h1->data_bytes; |
| 237 | slow_path += h0->data_bytes ^ sizeof (eh_copy_t); |
| 238 | |
| 239 | if (PREDICT_TRUE (slow_path == 0)) |
| 240 | { |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 241 | eh_copy_t *s0, *d0, *s1, *d1; |
| 242 | s0 = (eh_copy_t *) (h0->data + max_size - sizeof (eh_copy_t)); |
| 243 | d0 = (eh_copy_t *) (((u8 *) packet0) - sizeof (eh_copy_t)); |
Damjan Marion | f1213b8 | 2016-03-13 02:22:06 +0100 | [diff] [blame] | 244 | clib_memcpy (d0, s0, sizeof (eh_copy_t)); |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 245 | s1 = (eh_copy_t *) (h1->data + max_size - sizeof (eh_copy_t)); |
| 246 | d1 = (eh_copy_t *) (((u8 *) packet1) - sizeof (eh_copy_t)); |
Damjan Marion | f1213b8 | 2016-03-13 02:22:06 +0100 | [diff] [blame] | 247 | clib_memcpy (d1, s1, sizeof (eh_copy_t)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 248 | return; |
| 249 | } |
| 250 | |
| 251 | #define _(i) \ |
| 252 | do { \ |
| 253 | if (most_likely_size > ((i)-1)*sizeof (vnet_rewrite_data_t)) \ |
| 254 | { \ |
| 255 | vnet_rewrite_copy_one (p0, rw0, (i)); \ |
| 256 | vnet_rewrite_copy_one (p1, rw1, (i)); \ |
| 257 | } \ |
| 258 | } while (0) |
| 259 | |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 260 | _(4); |
| 261 | _(3); |
| 262 | _(2); |
| 263 | _(1); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 264 | |
| 265 | #undef _ |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 266 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 267 | n_left0 = (int) |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 268 | (((int) h0->data_bytes - most_likely_size) + (sizeof (rw0[0]) - 1)) |
| 269 | / (int) sizeof (rw0[0]); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 270 | n_left1 = (int) |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 271 | (((int) h1->data_bytes - most_likely_size) + (sizeof (rw1[0]) - 1)) |
| 272 | / (int) sizeof (rw1[0]); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 273 | |
| 274 | if (PREDICT_FALSE (n_left0 > 0 || n_left1 > 0)) |
| 275 | { |
| 276 | vnet_rewrite_copy_slow_path (p0, rw0, n_left0, most_likely_size); |
| 277 | vnet_rewrite_copy_slow_path (p1, rw1, n_left1, most_likely_size); |
| 278 | } |
| 279 | } |
| 280 | |
| 281 | #define vnet_rewrite_one_header(rw0,p0,most_likely_size) \ |
| 282 | _vnet_rewrite_one_header (&((rw0).rewrite_header), (p0), \ |
| 283 | sizeof ((rw0).rewrite_data), \ |
| 284 | (most_likely_size)) |
| 285 | |
| 286 | #define vnet_rewrite_two_headers(rw0,rw1,p0,p1,most_likely_size) \ |
| 287 | _vnet_rewrite_two_headers (&((rw0).rewrite_header), &((rw1).rewrite_header), \ |
| 288 | (p0), (p1), \ |
| 289 | sizeof ((rw0).rewrite_data), \ |
| 290 | (most_likely_size)) |
| 291 | |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 292 | always_inline void |
| 293 | _vnet_fixup_one_header (vnet_rewrite_header_t * h0, |
Neale Ranns | 2e7fbcc | 2017-03-15 04:22:25 -0700 | [diff] [blame] | 294 | u8 * addr, u32 addr_len, u8 * packet0) |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 295 | { |
Neale Ranns | 2e7fbcc | 2017-03-15 04:22:25 -0700 | [diff] [blame] | 296 | if (PREDICT_TRUE (h0->dst_mcast_mask)) |
| 297 | { |
| 298 | /* location to write to in the packet */ |
| 299 | u8 *p0 = packet0 - h0->dst_mcast_offset; |
| 300 | u32 *p1 = (u32 *) p0; |
| 301 | /* location to copy from in the L3 dest address */ |
| 302 | u32 *a0 = (u32 *) (addr + addr_len - sizeof (h0->dst_mcast_mask)); |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 303 | |
Neale Ranns | 2e7fbcc | 2017-03-15 04:22:25 -0700 | [diff] [blame] | 304 | *p1 |= (*a0 & h0->dst_mcast_mask); |
| 305 | } |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 306 | } |
| 307 | |
Neale Ranns | 2e7fbcc | 2017-03-15 04:22:25 -0700 | [diff] [blame] | 308 | #define vnet_fixup_one_header(rw0,addr,p0) \ |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 309 | _vnet_fixup_one_header (&((rw0).rewrite_header), \ |
| 310 | (u8*)(addr), sizeof((*addr)), \ |
Neale Ranns | 2e7fbcc | 2017-03-15 04:22:25 -0700 | [diff] [blame] | 311 | (u8*)(p0)) |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 312 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 313 | #define VNET_REWRITE_FOR_SW_INTERFACE_ADDRESS_BROADCAST ((void *) 0) |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 314 | /** Deprecated */ |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 315 | void vnet_rewrite_for_sw_interface (struct vnet_main_t *vnm, |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 316 | vnet_link_t packet_type, |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 317 | u32 sw_if_index, |
| 318 | u32 node_index, |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 319 | void *dst_address, |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 320 | vnet_rewrite_header_t * rw, |
| 321 | u32 max_rewrite_bytes); |
| 322 | |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 323 | u32 vnet_tx_node_index_for_sw_interface (struct vnet_main_t *vnm, |
| 324 | u32 sw_if_index); |
| 325 | |
| 326 | void vnet_rewrite_init (struct vnet_main_t *vnm, |
| 327 | u32 sw_if_index, |
| 328 | u32 this_node, |
| 329 | u32 next_node, vnet_rewrite_header_t * rw); |
| 330 | |
| 331 | u8 *vnet_build_rewrite_for_sw_interface (struct vnet_main_t *vnm, |
| 332 | u32 sw_if_index, |
| 333 | vnet_link_t packet_type, |
| 334 | const void *dst_address); |
| 335 | void vnet_update_adjacency_for_sw_interface (struct vnet_main_t *vnm, |
| 336 | u32 sw_if_index, u32 ai); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 337 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 338 | format_function_t format_vnet_rewrite; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 339 | |
| 340 | serialize_function_t serialize_vnet_rewrite, unserialize_vnet_rewrite; |
| 341 | |
| 342 | #endif /* included_vnet_rewrite_h */ |
Dave Barach | ba868bb | 2016-08-08 09:51:21 -0400 | [diff] [blame] | 343 | |
| 344 | /* |
| 345 | * fd.io coding-style-patch-verification: ON |
| 346 | * |
| 347 | * Local Variables: |
| 348 | * eval: (c-set-style "gnu") |
| 349 | * End: |
| 350 | */ |