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 | * ethernet.h: types/functions for ethernet. |
| 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_ethernet_h |
| 41 | #define included_ethernet_h |
| 42 | |
| 43 | #include <vnet/vnet.h> |
| 44 | #include <vnet/ethernet/packet.h> |
| 45 | #include <vnet/pg/pg.h> |
Damjan Marion | 2231150 | 2016-10-28 20:30:15 +0200 | [diff] [blame] | 46 | #include <vnet/feature/feature.h> |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 47 | |
| 48 | always_inline u64 |
| 49 | ethernet_mac_address_u64 (u8 * a) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 50 | { |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 51 | return (((u64) a[0] << (u64) (5 * 8)) |
| 52 | | ((u64) a[1] << (u64) (4 * 8)) |
| 53 | | ((u64) a[2] << (u64) (3 * 8)) |
| 54 | | ((u64) a[3] << (u64) (2 * 8)) |
| 55 | | ((u64) a[4] << (u64) (1 * 8)) | ((u64) a[5] << (u64) (0 * 8))); |
| 56 | } |
| 57 | |
| 58 | static inline int |
| 59 | ethernet_mac_address_is_multicast_u64 (u64 a) |
| 60 | { |
| 61 | return (a & (1ULL << (5 * 8))) != 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 62 | } |
| 63 | |
Damjan Marion | b94bdad | 2016-09-19 11:32:03 +0200 | [diff] [blame] | 64 | static_always_inline int |
| 65 | ethernet_frame_is_tagged (u16 type) |
| 66 | { |
| 67 | #if __SSE4_2__ |
| 68 | const __m128i ethertype_mask = _mm_set_epi16 (ETHERNET_TYPE_VLAN, |
| 69 | ETHERNET_TYPE_DOT1AD, |
| 70 | ETHERNET_TYPE_VLAN_9100, |
| 71 | ETHERNET_TYPE_VLAN_9200, |
| 72 | /* duplicate last one to |
| 73 | fill register */ |
| 74 | ETHERNET_TYPE_VLAN_9200, |
| 75 | ETHERNET_TYPE_VLAN_9200, |
| 76 | ETHERNET_TYPE_VLAN_9200, |
| 77 | ETHERNET_TYPE_VLAN_9200); |
| 78 | |
| 79 | __m128i r = _mm_set1_epi16 (type); |
| 80 | r = _mm_cmpeq_epi16 (ethertype_mask, r); |
| 81 | return !_mm_test_all_zeros (r, r); |
| 82 | #else |
| 83 | if ((type == ETHERNET_TYPE_VLAN) || |
| 84 | (type == ETHERNET_TYPE_DOT1AD) || |
| 85 | (type == ETHERNET_TYPE_VLAN_9100) || (type == ETHERNET_TYPE_VLAN_9200)) |
| 86 | return 1; |
| 87 | #endif |
| 88 | return 0; |
| 89 | } |
| 90 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 91 | /* Max. sized ethernet/vlan header for parsing. */ |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 92 | typedef struct |
| 93 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 94 | ethernet_header_t ethernet; |
| 95 | |
| 96 | /* Allow up to 2 stacked vlan headers. */ |
| 97 | ethernet_vlan_header_t vlan[2]; |
| 98 | } ethernet_max_header_t; |
| 99 | |
| 100 | struct vnet_hw_interface_t; |
| 101 | /* Ethernet flag change callback. */ |
| 102 | typedef u32 (ethernet_flag_change_function_t) |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 103 | (vnet_main_t * vnm, struct vnet_hw_interface_t * hi, u32 flags); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 104 | |
| 105 | #define ETHERNET_MIN_PACKET_BYTES 64 |
| 106 | #define ETHERNET_MAX_PACKET_BYTES 9216 |
| 107 | |
| 108 | /* Ethernet interface instance. */ |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 109 | typedef struct ethernet_interface |
| 110 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 111 | |
| 112 | /* Accept all packets (promiscuous mode). */ |
| 113 | #define ETHERNET_INTERFACE_FLAG_ACCEPT_ALL (1 << 0) |
| 114 | #define ETHERNET_INTERFACE_FLAG_CONFIG_PROMISC(flags) \ |
| 115 | (((flags) & ~ETHERNET_INTERFACE_FLAG_ACCEPT_ALL) == 0) |
| 116 | |
| 117 | /* Change MTU on interface from hw interface structure */ |
| 118 | #define ETHERNET_INTERFACE_FLAG_MTU (1 << 1) |
| 119 | #define ETHERNET_INTERFACE_FLAG_CONFIG_MTU(flags) \ |
| 120 | ((flags) & ETHERNET_INTERFACE_FLAG_MTU) |
| 121 | |
| 122 | /* Callback, e.g. to turn on/off promiscuous mode */ |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 123 | ethernet_flag_change_function_t *flag_change; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 124 | |
| 125 | u32 driver_instance; |
| 126 | |
| 127 | /* Ethernet (MAC) address for this interface. */ |
| 128 | u8 address[6]; |
| 129 | } ethernet_interface_t; |
| 130 | |
Damjan Marion | b8abf87 | 2016-03-14 20:02:35 +0100 | [diff] [blame] | 131 | extern vnet_hw_interface_class_t ethernet_hw_interface_class; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 132 | |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 133 | typedef struct |
| 134 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 135 | /* Name (a c string). */ |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 136 | char *name; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 137 | |
| 138 | /* Ethernet type in host byte order. */ |
| 139 | ethernet_type_t type; |
| 140 | |
| 141 | /* Node which handles this type. */ |
| 142 | u32 node_index; |
| 143 | |
| 144 | /* Next index for this type. */ |
| 145 | u32 next_index; |
| 146 | } ethernet_type_info_t; |
| 147 | |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 148 | typedef enum |
| 149 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 150 | #define ethernet_error(n,c,s) ETHERNET_ERROR_##n, |
| 151 | #include <vnet/ethernet/error.def> |
| 152 | #undef ethernet_error |
| 153 | ETHERNET_N_ERROR, |
| 154 | } ethernet_error_t; |
| 155 | |
| 156 | |
| 157 | // Structs used when parsing packet to find sw_if_index |
| 158 | |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 159 | typedef struct |
| 160 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 161 | u32 sw_if_index; |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 162 | u32 flags; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 163 | // config entry is-valid flag |
| 164 | // exact match flags (valid if packet has 0/1/2/3 tags) |
| 165 | // L2 vs L3 forwarding mode |
| 166 | #define SUBINT_CONFIG_MATCH_0_TAG (1<<0) |
| 167 | #define SUBINT_CONFIG_MATCH_1_TAG (1<<1) |
| 168 | #define SUBINT_CONFIG_MATCH_2_TAG (1<<2) |
| 169 | #define SUBINT_CONFIG_MATCH_3_TAG (1<<3) |
| 170 | #define SUBINT_CONFIG_VALID (1<<4) |
| 171 | #define SUBINT_CONFIG_L2 (1<<5) |
| 172 | |
| 173 | } subint_config_t; |
| 174 | |
| 175 | always_inline u32 |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 176 | eth_create_valid_subint_match_flags (u32 num_tags) |
| 177 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 178 | return SUBINT_CONFIG_VALID | (1 << num_tags); |
| 179 | } |
| 180 | |
| 181 | |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 182 | typedef struct |
| 183 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 184 | subint_config_t untagged_subint; |
| 185 | subint_config_t default_subint; |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 186 | u16 dot1q_vlans; // pool id for vlan table |
| 187 | u16 dot1ad_vlans; // pool id for vlan table |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 188 | } main_intf_t; |
| 189 | |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 190 | typedef struct |
| 191 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 192 | subint_config_t single_tag_subint; |
| 193 | subint_config_t inner_any_subint; |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 194 | u32 qinqs; // pool id for qinq table |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 195 | } vlan_intf_t; |
| 196 | |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 197 | typedef struct |
| 198 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 199 | vlan_intf_t vlans[ETHERNET_N_VLAN]; |
| 200 | } vlan_table_t; |
| 201 | |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 202 | typedef struct |
| 203 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 204 | subint_config_t subint; |
| 205 | } qinq_intf_t; |
| 206 | |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 207 | typedef struct |
| 208 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 209 | qinq_intf_t vlans[ETHERNET_N_VLAN]; |
| 210 | } qinq_table_t; |
| 211 | |
| 212 | // Structure mapping to a next index based on ethertype. |
| 213 | // Common ethertypes are stored explicitly, others are |
| 214 | // stored in a sparse table. |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 215 | typedef struct |
| 216 | { |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 217 | /* Sparse vector mapping ethernet type in network byte order |
| 218 | to next index. */ |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 219 | u16 *input_next_by_type; |
| 220 | u32 *sparse_index_by_input_next_index; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 221 | |
| 222 | /* cached next indexes for common ethertypes */ |
| 223 | u32 input_next_ip4; |
| 224 | u32 input_next_ip6; |
| 225 | u32 input_next_mpls; |
| 226 | } next_by_ethertype_t; |
| 227 | |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 228 | typedef struct |
| 229 | { |
| 230 | vlib_main_t *vlib_main; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 231 | |
| 232 | /* next node index for the L3 input node of each ethertype */ |
| 233 | next_by_ethertype_t l3_next; |
| 234 | |
| 235 | /* next node index for L2 interfaces */ |
| 236 | u32 l2_next; |
| 237 | |
| 238 | /* flag and next node index for L3 redirect */ |
| 239 | u32 redirect_l3; |
| 240 | u32 redirect_l3_next; |
| 241 | |
| 242 | /* Pool of ethernet interface instances. */ |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 243 | ethernet_interface_t *interfaces; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 244 | |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 245 | ethernet_type_info_t *type_infos; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 246 | |
| 247 | /* Hash tables mapping name/type to type info index. */ |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 248 | uword *type_info_by_name, *type_info_by_type; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 249 | |
| 250 | // The root of the vlan parsing tables. A vector with one element |
| 251 | // for each main interface, indexed by hw_if_index. |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 252 | main_intf_t *main_intfs; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 253 | |
| 254 | // Pool of vlan tables |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 255 | vlan_table_t *vlan_pool; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 256 | |
| 257 | // Pool of qinq tables; |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 258 | qinq_table_t *qinq_pool; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 259 | |
| 260 | /* Set to one to use AB.CD.EF instead of A:B:C:D:E:F as ethernet format. */ |
| 261 | int format_ethernet_address_16bit; |
| 262 | |
Dave Barach | 1f49ed6 | 2016-02-24 11:29:06 -0500 | [diff] [blame] | 263 | /* debug: make sure we don't wipe out an ethernet registration by mistake */ |
| 264 | u8 next_by_ethertype_register_called; |
| 265 | |
Damjan Marion | 8b3191e | 2016-11-09 19:54:20 +0100 | [diff] [blame] | 266 | /* Feature arc index */ |
| 267 | u8 output_feature_arc_index; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 268 | } ethernet_main_t; |
| 269 | |
| 270 | ethernet_main_t ethernet_main; |
| 271 | |
| 272 | always_inline ethernet_type_info_t * |
| 273 | ethernet_get_type_info (ethernet_main_t * em, ethernet_type_t type) |
| 274 | { |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 275 | uword *p = hash_get (em->type_info_by_type, type); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 276 | return p ? vec_elt_at_index (em->type_infos, p[0]) : 0; |
| 277 | } |
| 278 | |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 279 | ethernet_interface_t *ethernet_get_interface (ethernet_main_t * em, |
| 280 | u32 hw_if_index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 281 | |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 282 | clib_error_t *ethernet_register_interface (vnet_main_t * vnm, |
| 283 | u32 dev_class_index, |
| 284 | u32 dev_instance, |
| 285 | u8 * address, |
| 286 | u32 * hw_if_index_return, |
| 287 | ethernet_flag_change_function_t |
| 288 | flag_change); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 289 | |
| 290 | void ethernet_delete_interface (vnet_main_t * vnm, u32 hw_if_index); |
| 291 | |
| 292 | /* Register given node index to take input for given ethernet type. */ |
| 293 | void |
| 294 | ethernet_register_input_type (vlib_main_t * vm, |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 295 | ethernet_type_t type, u32 node_index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 296 | |
| 297 | /* Register given node index to take input for packet from L2 interfaces. */ |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 298 | void ethernet_register_l2_input (vlib_main_t * vm, u32 node_index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 299 | |
| 300 | /* Register given node index to take redirected L3 traffic, and enable L3 redirect */ |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 301 | void ethernet_register_l3_redirect (vlib_main_t * vm, u32 node_index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 302 | |
| 303 | /* Formats ethernet address X:X:X:X:X:X */ |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 304 | u8 *format_ethernet_address (u8 * s, va_list * args); |
| 305 | u8 *format_ethernet_type (u8 * s, va_list * args); |
| 306 | u8 *format_ethernet_vlan_tci (u8 * s, va_list * va); |
| 307 | u8 *format_ethernet_header (u8 * s, va_list * args); |
| 308 | u8 *format_ethernet_header_with_length (u8 * s, va_list * args); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 309 | |
| 310 | /* Parse ethernet address in either X:X:X:X:X:X unix or X.X.X cisco format. */ |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 311 | uword unformat_ethernet_address (unformat_input_t * input, va_list * args); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 312 | |
| 313 | /* Parse ethernet type as 0xXXXX or type name from ethernet/types.def. |
| 314 | In either host or network byte order. */ |
| 315 | uword |
| 316 | unformat_ethernet_type_host_byte_order (unformat_input_t * input, |
| 317 | va_list * args); |
| 318 | uword |
| 319 | unformat_ethernet_type_net_byte_order (unformat_input_t * input, |
| 320 | va_list * args); |
| 321 | |
| 322 | /* Parse ethernet header. */ |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 323 | uword unformat_ethernet_header (unformat_input_t * input, va_list * args); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 324 | |
| 325 | /* Parse ethernet interface name; return hw_if_index. */ |
| 326 | uword unformat_ethernet_interface (unformat_input_t * input, va_list * args); |
| 327 | |
| 328 | uword unformat_pg_ethernet_header (unformat_input_t * input, va_list * args); |
| 329 | |
| 330 | always_inline void |
| 331 | ethernet_setup_node (vlib_main_t * vm, u32 node_index) |
| 332 | { |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 333 | vlib_node_t *n = vlib_get_node (vm, node_index); |
| 334 | pg_node_t *pn = pg_get_node (node_index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 335 | |
| 336 | n->format_buffer = format_ethernet_header_with_length; |
| 337 | n->unformat_buffer = unformat_ethernet_header; |
| 338 | pn->unformat_edit = unformat_pg_ethernet_header; |
| 339 | } |
| 340 | |
| 341 | always_inline ethernet_header_t * |
| 342 | ethernet_buffer_get_header (vlib_buffer_t * b) |
| 343 | { |
| 344 | return (void *) |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 345 | (b->data + vnet_buffer (b)->ethernet.start_of_ethernet_header); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 346 | } |
| 347 | |
Chris Luke | 194ebc5 | 2016-04-25 14:26:55 -0400 | [diff] [blame] | 348 | /** Returns the number of VLAN headers in the current Ethernet frame in the |
| 349 | * buffer. Returns 0, 1, 2 for the known header count. The value 3 indicates |
| 350 | * the number of headers is not known. |
| 351 | */ |
| 352 | #define ethernet_buffer_get_vlan_count(b) ( \ |
| 353 | ((b)->flags & ETH_BUFFER_VLAN_BITS) >> LOG2_ETH_BUFFER_VLAN_1_DEEP \ |
| 354 | ) |
| 355 | |
| 356 | /** Sets the number of VLAN headers in the current Ethernet frame in the |
| 357 | * buffer. Values 0, 1, 2 indicate the header count. The value 3 indicates |
| 358 | * the number of headers is not known. |
| 359 | */ |
| 360 | #define ethernet_buffer_set_vlan_count(b, v) ( \ |
| 361 | (b)->flags = ((b)->flags & ~ETH_BUFFER_VLAN_BITS) | \ |
| 362 | (((v) << LOG2_ETH_BUFFER_VLAN_1_DEEP) & ETH_BUFFER_VLAN_BITS) \ |
| 363 | ) |
| 364 | |
| 365 | /** Adjusts the vlan count by the delta in 'v' */ |
| 366 | #define ethernet_buffer_adjust_vlan_count(b, v) ( \ |
| 367 | ethernet_buffer_set_vlan_count(b, \ |
| 368 | (word)ethernet_buffer_get_vlan_count(b) + (word)(v)) \ |
| 369 | ) |
| 370 | |
| 371 | /** Adjusts the vlan count by the header size byte delta in 'v' */ |
| 372 | #define ethernet_buffer_adjust_vlan_count_by_bytes(b, v) ( \ |
| 373 | (b)->flags = ((b)->flags & ~ETH_BUFFER_VLAN_BITS) | (( \ |
| 374 | ((b)->flags & ETH_BUFFER_VLAN_BITS) + \ |
| 375 | ((v) << (LOG2_ETH_BUFFER_VLAN_1_DEEP - 2)) \ |
| 376 | ) & ETH_BUFFER_VLAN_BITS) \ |
| 377 | ) |
| 378 | |
| 379 | /** |
| 380 | * Determine the size of the Ethernet headers of the current frame in |
| 381 | * the buffer. This uses the VLAN depth flags that are set by |
| 382 | * ethernet-input. Because these flags are stored in the vlib_buffer_t |
| 383 | * "flags" field this count is valid regardless of the node so long as it's |
| 384 | * checked downstream of ethernet-input; That is, the value is not stored in |
| 385 | * the opaque space. |
| 386 | */ |
| 387 | #define ethernet_buffer_header_size(b) ( \ |
| 388 | ethernet_buffer_get_vlan_count((b)) * sizeof(ethernet_vlan_header_t) + \ |
| 389 | sizeof(ethernet_header_t) \ |
| 390 | ) |
| 391 | |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 392 | ethernet_main_t *ethernet_get_main (vlib_main_t * vm); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 393 | u32 ethernet_set_flags (vnet_main_t * vnm, u32 hw_if_index, u32 flags); |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 394 | void ethernet_sw_interface_set_l2_mode (vnet_main_t * vnm, u32 sw_if_index, |
| 395 | u32 l2); |
| 396 | void ethernet_sw_interface_set_l2_mode_noport (vnet_main_t * vnm, |
| 397 | u32 sw_if_index, u32 l2); |
| 398 | void ethernet_set_rx_redirect (vnet_main_t * vnm, vnet_hw_interface_t * hi, |
| 399 | u32 enable); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 400 | |
| 401 | int |
| 402 | vnet_arp_set_ip4_over_ethernet (vnet_main_t * vnm, |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 403 | u32 sw_if_index, void *a_arg, int is_static); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 404 | |
| 405 | int |
| 406 | vnet_arp_unset_ip4_over_ethernet (vnet_main_t * vnm, |
Neale Ranns | 0bfe5d8 | 2016-08-25 15:29:12 +0100 | [diff] [blame] | 407 | u32 sw_if_index, void *a_arg); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 408 | |
| 409 | int vnet_proxy_arp_fib_reset (u32 fib_id); |
| 410 | |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 411 | clib_error_t *next_by_ethertype_init (next_by_ethertype_t * l3_next); |
| 412 | clib_error_t *next_by_ethertype_register (next_by_ethertype_t * l3_next, |
| 413 | u32 ethertype, u32 next_index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 414 | |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 415 | int vnet_create_loopback_interface (u32 * sw_if_indexp, u8 * mac_address); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 416 | int vnet_delete_loopback_interface (u32 sw_if_index); |
Pavel Kotucek | d85590a | 2016-08-26 13:35:40 +0200 | [diff] [blame] | 417 | int vnet_delete_sub_interface (u32 sw_if_index); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 418 | |
| 419 | // Perform ethernet subinterface classification table lookups given |
| 420 | // the ports's sw_if_index and fields extracted from the ethernet header. |
| 421 | // The resulting tables are used by identify_subint(). |
| 422 | always_inline void |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 423 | eth_vlan_table_lookups (ethernet_main_t * em, |
| 424 | vnet_main_t * vnm, |
| 425 | u32 port_sw_if_index0, |
| 426 | u16 first_ethertype, |
| 427 | u16 outer_id, |
| 428 | u16 inner_id, |
| 429 | vnet_hw_interface_t ** hi, |
| 430 | main_intf_t ** main_intf, |
| 431 | vlan_intf_t ** vlan_intf, qinq_intf_t ** qinq_intf) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 432 | { |
| 433 | vlan_table_t *vlan_table; |
| 434 | qinq_table_t *qinq_table; |
| 435 | u32 vlan_table_id; |
| 436 | |
| 437 | // Read the main, vlan, and qinq interface table entries |
| 438 | // TODO: Consider if/how to prefetch tables. Also consider |
| 439 | // single-entry cache to skip table lookups and identify_subint() |
| 440 | // processing. |
| 441 | *hi = vnet_get_sup_hw_interface (vnm, port_sw_if_index0); |
| 442 | *main_intf = vec_elt_at_index (em->main_intfs, (*hi)->hw_if_index); |
| 443 | |
| 444 | // Always read the vlan and qinq tables, even if there are not that |
| 445 | // many tags on the packet. This makes the lookups and comparisons |
| 446 | // easier (and less branchy). |
| 447 | vlan_table_id = (first_ethertype == ETHERNET_TYPE_DOT1AD) ? |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 448 | (*main_intf)->dot1ad_vlans : (*main_intf)->dot1q_vlans; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 449 | vlan_table = vec_elt_at_index (em->vlan_pool, vlan_table_id); |
| 450 | *vlan_intf = &vlan_table->vlans[outer_id]; |
| 451 | |
| 452 | qinq_table = vec_elt_at_index (em->qinq_pool, (*vlan_intf)->qinqs); |
| 453 | *qinq_intf = &qinq_table->vlans[inner_id]; |
| 454 | } |
| 455 | |
| 456 | |
| 457 | // Determine the subinterface for this packet, given the result of the |
| 458 | // vlan table lookups and vlan header parsing. Check the most specific |
| 459 | // matches first. |
| 460 | // Returns 1 if a matching subinterface was found, otherwise returns 0. |
| 461 | always_inline u32 |
| 462 | eth_identify_subint (vnet_hw_interface_t * hi, |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 463 | vlib_buffer_t * b0, |
| 464 | u32 match_flags, |
| 465 | main_intf_t * main_intf, |
| 466 | vlan_intf_t * vlan_intf, |
| 467 | qinq_intf_t * qinq_intf, |
| 468 | u32 * new_sw_if_index, u8 * error0, u32 * is_l2) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 469 | { |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 470 | subint_config_t *subint; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 471 | |
| 472 | // Each comparison is checking both the valid flag and the number of tags |
| 473 | // (incorporating exact-match/non-exact-match). |
| 474 | |
Damjan Marion | 607de1a | 2016-08-16 22:53:54 +0200 | [diff] [blame] | 475 | // check for specific double tag |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 476 | subint = &qinq_intf->subint; |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 477 | if ((subint->flags & match_flags) == match_flags) |
| 478 | goto matched; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 479 | |
| 480 | // check for specific outer and 'any' inner |
| 481 | subint = &vlan_intf->inner_any_subint; |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 482 | if ((subint->flags & match_flags) == match_flags) |
| 483 | goto matched; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 484 | |
Damjan Marion | 607de1a | 2016-08-16 22:53:54 +0200 | [diff] [blame] | 485 | // check for specific single tag |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 486 | subint = &vlan_intf->single_tag_subint; |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 487 | if ((subint->flags & match_flags) == match_flags) |
| 488 | goto matched; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 489 | |
| 490 | // check for untagged interface |
| 491 | subint = &main_intf->untagged_subint; |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 492 | if ((subint->flags & match_flags) == match_flags) |
| 493 | goto matched; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 494 | |
Damjan Marion | 607de1a | 2016-08-16 22:53:54 +0200 | [diff] [blame] | 495 | // check for default interface |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 496 | subint = &main_intf->default_subint; |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 497 | if ((subint->flags & match_flags) == match_flags) |
| 498 | goto matched; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 499 | |
| 500 | // No matching subinterface |
| 501 | *new_sw_if_index = ~0; |
| 502 | *error0 = ETHERNET_ERROR_UNKNOWN_VLAN; |
| 503 | *is_l2 = 0; |
| 504 | return 0; |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 505 | |
| 506 | matched: |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 507 | *new_sw_if_index = subint->sw_if_index; |
| 508 | *is_l2 = subint->flags & SUBINT_CONFIG_L2; |
| 509 | return 1; |
| 510 | } |
| 511 | |
John Lo | 7185c3b | 2016-06-04 00:02:37 -0400 | [diff] [blame] | 512 | // Compare two ethernet macs. Return 1 if they are the same, 0 if different |
| 513 | always_inline u32 |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 514 | eth_mac_equal (u8 * mac1, u8 * mac2) |
| 515 | { |
| 516 | return (*((u32 *) (mac1 + 0)) == *((u32 *) (mac2 + 0)) && |
| 517 | *((u32 *) (mac1 + 2)) == *((u32 *) (mac2 + 2))); |
John Lo | 7185c3b | 2016-06-04 00:02:37 -0400 | [diff] [blame] | 518 | } |
| 519 | |
| 520 | |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 521 | always_inline ethernet_main_t * |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 522 | vnet_get_ethernet_main (void) |
| 523 | { |
| 524 | return ðernet_main; |
| 525 | } |
| 526 | |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 527 | void vnet_register_ip4_arp_resolution_event (vnet_main_t * vnm, |
| 528 | void *address_arg, |
| 529 | uword node_index, |
| 530 | uword type_opaque, uword data); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 531 | |
| 532 | |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 533 | int vnet_add_del_ip4_arp_change_event (vnet_main_t * vnm, |
| 534 | void *data_callback, |
| 535 | u32 pid, |
| 536 | void *address_arg, |
| 537 | uword node_index, |
| 538 | uword type_opaque, |
| 539 | uword data, int is_add); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 540 | |
Neale Ranns | 3be6b28 | 2016-12-20 14:24:01 +0000 | [diff] [blame] | 541 | void ethernet_arp_change_mac (u32 sw_if_index); |
| 542 | void ethernet_ndp_change_mac (u32 sw_if_index); |
Pavel Kotucek | c631f2d | 2016-09-26 10:40:02 +0200 | [diff] [blame] | 543 | |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 544 | void arp_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai); |
| 545 | |
| 546 | void ethernet_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai); |
| 547 | u8 *ethernet_build_rewrite (vnet_main_t * vnm, |
| 548 | u32 sw_if_index, |
| 549 | vnet_link_t link_type, const void *dst_address); |
Neale Ranns | 32e1c01 | 2016-11-22 17:07:28 +0000 | [diff] [blame] | 550 | const u8 *ethernet_ip4_mcast_dst_addr (void); |
| 551 | const u8 *ethernet_ip6_mcast_dst_addr (void); |
Neale Ranns | b80c536 | 2016-10-08 13:03:40 +0100 | [diff] [blame] | 552 | |
Jean-Mickael Guerin | 8941ec2 | 2016-03-04 14:14:21 +0100 | [diff] [blame] | 553 | extern vlib_node_registration_t ethernet_input_node; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 554 | |
| 555 | #endif /* included_ethernet_h */ |
Keith Burns (alagalah) | e70dcc8 | 2016-08-15 18:33:19 -0700 | [diff] [blame] | 556 | |
| 557 | /* |
| 558 | * fd.io coding-style-patch-verification: ON |
| 559 | * |
| 560 | * Local Variables: |
| 561 | * eval: (c-set-style "gnu") |
| 562 | * End: |
| 563 | */ |