blob: 3acde421f78c7461f3658551bb2ece9a9027416f [file] [log] [blame]
Ed Warnickecb9cada2015-12-08 15:45:58 -07001/*
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 Marion22311502016-10-28 20:30:15 +020046#include <vnet/feature/feature.h>
Ed Warnickecb9cada2015-12-08 15:45:58 -070047
48always_inline u64
49ethernet_mac_address_u64 (u8 * a)
Ed Warnickecb9cada2015-12-08 15:45:58 -070050{
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -070051 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
58static inline int
59ethernet_mac_address_is_multicast_u64 (u64 a)
60{
61 return (a & (1ULL << (5 * 8))) != 0;
Ed Warnickecb9cada2015-12-08 15:45:58 -070062}
63
Damjan Marionb94bdad2016-09-19 11:32:03 +020064static_always_inline int
65ethernet_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 Warnickecb9cada2015-12-08 15:45:58 -070091/* Max. sized ethernet/vlan header for parsing. */
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -070092typedef struct
93{
Ed Warnickecb9cada2015-12-08 15:45:58 -070094 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
100struct vnet_hw_interface_t;
101/* Ethernet flag change callback. */
102typedef u32 (ethernet_flag_change_function_t)
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700103 (vnet_main_t * vnm, struct vnet_hw_interface_t * hi, u32 flags);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700104
105#define ETHERNET_MIN_PACKET_BYTES 64
106#define ETHERNET_MAX_PACKET_BYTES 9216
107
108/* Ethernet interface instance. */
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700109typedef struct ethernet_interface
110{
Ed Warnickecb9cada2015-12-08 15:45:58 -0700111
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)e70dcc82016-08-15 18:33:19 -0700123 ethernet_flag_change_function_t *flag_change;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700124
125 u32 driver_instance;
126
127 /* Ethernet (MAC) address for this interface. */
128 u8 address[6];
129} ethernet_interface_t;
130
Damjan Marionb8abf872016-03-14 20:02:35 +0100131extern vnet_hw_interface_class_t ethernet_hw_interface_class;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700132
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700133typedef struct
134{
Ed Warnickecb9cada2015-12-08 15:45:58 -0700135 /* Name (a c string). */
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700136 char *name;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700137
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)e70dcc82016-08-15 18:33:19 -0700148typedef enum
149{
Ed Warnickecb9cada2015-12-08 15:45:58 -0700150#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)e70dcc82016-08-15 18:33:19 -0700159typedef struct
160{
Ed Warnickecb9cada2015-12-08 15:45:58 -0700161 u32 sw_if_index;
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700162 u32 flags;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700163 // 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
175always_inline u32
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700176eth_create_valid_subint_match_flags (u32 num_tags)
177{
Ed Warnickecb9cada2015-12-08 15:45:58 -0700178 return SUBINT_CONFIG_VALID | (1 << num_tags);
179}
180
181
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700182typedef struct
183{
Ed Warnickecb9cada2015-12-08 15:45:58 -0700184 subint_config_t untagged_subint;
185 subint_config_t default_subint;
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700186 u16 dot1q_vlans; // pool id for vlan table
187 u16 dot1ad_vlans; // pool id for vlan table
Ed Warnickecb9cada2015-12-08 15:45:58 -0700188} main_intf_t;
189
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700190typedef struct
191{
Ed Warnickecb9cada2015-12-08 15:45:58 -0700192 subint_config_t single_tag_subint;
193 subint_config_t inner_any_subint;
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700194 u32 qinqs; // pool id for qinq table
Ed Warnickecb9cada2015-12-08 15:45:58 -0700195} vlan_intf_t;
196
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700197typedef struct
198{
Ed Warnickecb9cada2015-12-08 15:45:58 -0700199 vlan_intf_t vlans[ETHERNET_N_VLAN];
200} vlan_table_t;
201
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700202typedef struct
203{
Ed Warnickecb9cada2015-12-08 15:45:58 -0700204 subint_config_t subint;
205} qinq_intf_t;
206
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700207typedef struct
208{
Ed Warnickecb9cada2015-12-08 15:45:58 -0700209 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)e70dcc82016-08-15 18:33:19 -0700215typedef struct
216{
Ed Warnickecb9cada2015-12-08 15:45:58 -0700217 /* Sparse vector mapping ethernet type in network byte order
218 to next index. */
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700219 u16 *input_next_by_type;
220 u32 *sparse_index_by_input_next_index;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700221
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)e70dcc82016-08-15 18:33:19 -0700228typedef struct
229{
230 vlib_main_t *vlib_main;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700231
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)e70dcc82016-08-15 18:33:19 -0700243 ethernet_interface_t *interfaces;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700244
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700245 ethernet_type_info_t *type_infos;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700246
247 /* Hash tables mapping name/type to type info index. */
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700248 uword *type_info_by_name, *type_info_by_type;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700249
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)e70dcc82016-08-15 18:33:19 -0700252 main_intf_t *main_intfs;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700253
254 // Pool of vlan tables
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700255 vlan_table_t *vlan_pool;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700256
257 // Pool of qinq tables;
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700258 qinq_table_t *qinq_pool;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700259
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 Barach1f49ed62016-02-24 11:29:06 -0500263 /* debug: make sure we don't wipe out an ethernet registration by mistake */
264 u8 next_by_ethertype_register_called;
265
Damjan Marion8b3191e2016-11-09 19:54:20 +0100266 /* Feature arc index */
267 u8 output_feature_arc_index;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700268} ethernet_main_t;
269
270ethernet_main_t ethernet_main;
271
272always_inline ethernet_type_info_t *
273ethernet_get_type_info (ethernet_main_t * em, ethernet_type_t type)
274{
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700275 uword *p = hash_get (em->type_info_by_type, type);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700276 return p ? vec_elt_at_index (em->type_infos, p[0]) : 0;
277}
278
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700279ethernet_interface_t *ethernet_get_interface (ethernet_main_t * em,
280 u32 hw_if_index);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700281
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700282clib_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 Warnickecb9cada2015-12-08 15:45:58 -0700289
290void ethernet_delete_interface (vnet_main_t * vnm, u32 hw_if_index);
291
292/* Register given node index to take input for given ethernet type. */
293void
294ethernet_register_input_type (vlib_main_t * vm,
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700295 ethernet_type_t type, u32 node_index);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700296
297/* Register given node index to take input for packet from L2 interfaces. */
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700298void ethernet_register_l2_input (vlib_main_t * vm, u32 node_index);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700299
300/* Register given node index to take redirected L3 traffic, and enable L3 redirect */
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700301void ethernet_register_l3_redirect (vlib_main_t * vm, u32 node_index);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700302
303/* Formats ethernet address X:X:X:X:X:X */
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700304u8 *format_ethernet_address (u8 * s, va_list * args);
305u8 *format_ethernet_type (u8 * s, va_list * args);
306u8 *format_ethernet_vlan_tci (u8 * s, va_list * va);
307u8 *format_ethernet_header (u8 * s, va_list * args);
308u8 *format_ethernet_header_with_length (u8 * s, va_list * args);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700309
310/* Parse ethernet address in either X:X:X:X:X:X unix or X.X.X cisco format. */
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700311uword unformat_ethernet_address (unformat_input_t * input, va_list * args);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700312
313/* Parse ethernet type as 0xXXXX or type name from ethernet/types.def.
314 In either host or network byte order. */
315uword
316unformat_ethernet_type_host_byte_order (unformat_input_t * input,
317 va_list * args);
318uword
319unformat_ethernet_type_net_byte_order (unformat_input_t * input,
320 va_list * args);
321
322/* Parse ethernet header. */
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700323uword unformat_ethernet_header (unformat_input_t * input, va_list * args);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700324
325/* Parse ethernet interface name; return hw_if_index. */
326uword unformat_ethernet_interface (unformat_input_t * input, va_list * args);
327
328uword unformat_pg_ethernet_header (unformat_input_t * input, va_list * args);
329
330always_inline void
331ethernet_setup_node (vlib_main_t * vm, u32 node_index)
332{
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700333 vlib_node_t *n = vlib_get_node (vm, node_index);
334 pg_node_t *pn = pg_get_node (node_index);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700335
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
341always_inline ethernet_header_t *
342ethernet_buffer_get_header (vlib_buffer_t * b)
343{
344 return (void *)
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700345 (b->data + vnet_buffer (b)->ethernet.start_of_ethernet_header);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700346}
347
Chris Luke194ebc52016-04-25 14:26:55 -0400348/** 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)e70dcc82016-08-15 18:33:19 -0700392ethernet_main_t *ethernet_get_main (vlib_main_t * vm);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700393u32 ethernet_set_flags (vnet_main_t * vnm, u32 hw_if_index, u32 flags);
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700394void ethernet_sw_interface_set_l2_mode (vnet_main_t * vnm, u32 sw_if_index,
395 u32 l2);
396void ethernet_sw_interface_set_l2_mode_noport (vnet_main_t * vnm,
397 u32 sw_if_index, u32 l2);
398void ethernet_set_rx_redirect (vnet_main_t * vnm, vnet_hw_interface_t * hi,
399 u32 enable);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700400
401int
402vnet_arp_set_ip4_over_ethernet (vnet_main_t * vnm,
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100403 u32 sw_if_index, void *a_arg, int is_static);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700404
405int
406vnet_arp_unset_ip4_over_ethernet (vnet_main_t * vnm,
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100407 u32 sw_if_index, void *a_arg);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700408
409int vnet_proxy_arp_fib_reset (u32 fib_id);
410
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700411clib_error_t *next_by_ethertype_init (next_by_ethertype_t * l3_next);
412clib_error_t *next_by_ethertype_register (next_by_ethertype_t * l3_next,
413 u32 ethertype, u32 next_index);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700414
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700415int vnet_create_loopback_interface (u32 * sw_if_indexp, u8 * mac_address);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700416int vnet_delete_loopback_interface (u32 sw_if_index);
Pavel Kotucekd85590a2016-08-26 13:35:40 +0200417int vnet_delete_sub_interface (u32 sw_if_index);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700418
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().
422always_inline void
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700423eth_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 Warnickecb9cada2015-12-08 15:45:58 -0700432{
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)e70dcc82016-08-15 18:33:19 -0700448 (*main_intf)->dot1ad_vlans : (*main_intf)->dot1q_vlans;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700449 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.
461always_inline u32
462eth_identify_subint (vnet_hw_interface_t * hi,
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700463 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 Warnickecb9cada2015-12-08 15:45:58 -0700469{
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700470 subint_config_t *subint;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700471
472 // Each comparison is checking both the valid flag and the number of tags
473 // (incorporating exact-match/non-exact-match).
474
Damjan Marion607de1a2016-08-16 22:53:54 +0200475 // check for specific double tag
Ed Warnickecb9cada2015-12-08 15:45:58 -0700476 subint = &qinq_intf->subint;
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700477 if ((subint->flags & match_flags) == match_flags)
478 goto matched;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700479
480 // check for specific outer and 'any' inner
481 subint = &vlan_intf->inner_any_subint;
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700482 if ((subint->flags & match_flags) == match_flags)
483 goto matched;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700484
Damjan Marion607de1a2016-08-16 22:53:54 +0200485 // check for specific single tag
Ed Warnickecb9cada2015-12-08 15:45:58 -0700486 subint = &vlan_intf->single_tag_subint;
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700487 if ((subint->flags & match_flags) == match_flags)
488 goto matched;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700489
490 // check for untagged interface
491 subint = &main_intf->untagged_subint;
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700492 if ((subint->flags & match_flags) == match_flags)
493 goto matched;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700494
Damjan Marion607de1a2016-08-16 22:53:54 +0200495 // check for default interface
Ed Warnickecb9cada2015-12-08 15:45:58 -0700496 subint = &main_intf->default_subint;
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700497 if ((subint->flags & match_flags) == match_flags)
498 goto matched;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700499
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)e70dcc82016-08-15 18:33:19 -0700505
506matched:
Ed Warnickecb9cada2015-12-08 15:45:58 -0700507 *new_sw_if_index = subint->sw_if_index;
508 *is_l2 = subint->flags & SUBINT_CONFIG_L2;
509 return 1;
510}
511
John Lo7185c3b2016-06-04 00:02:37 -0400512// Compare two ethernet macs. Return 1 if they are the same, 0 if different
513always_inline u32
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700514eth_mac_equal (u8 * mac1, u8 * mac2)
515{
516 return (*((u32 *) (mac1 + 0)) == *((u32 *) (mac2 + 0)) &&
517 *((u32 *) (mac1 + 2)) == *((u32 *) (mac2 + 2)));
John Lo7185c3b2016-06-04 00:02:37 -0400518}
519
520
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700521always_inline ethernet_main_t *
Ed Warnickecb9cada2015-12-08 15:45:58 -0700522vnet_get_ethernet_main (void)
523{
524 return &ethernet_main;
525}
526
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700527void 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 Warnickecb9cada2015-12-08 15:45:58 -0700531
532
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700533int 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 Warnickecb9cada2015-12-08 15:45:58 -0700540
Neale Ranns3be6b282016-12-20 14:24:01 +0000541void ethernet_arp_change_mac (u32 sw_if_index);
542void ethernet_ndp_change_mac (u32 sw_if_index);
Pavel Kotucekc631f2d2016-09-26 10:40:02 +0200543
Neale Rannsb80c5362016-10-08 13:03:40 +0100544void arp_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai);
545
546void ethernet_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai);
547u8 *ethernet_build_rewrite (vnet_main_t * vnm,
548 u32 sw_if_index,
549 vnet_link_t link_type, const void *dst_address);
Neale Ranns32e1c012016-11-22 17:07:28 +0000550const u8 *ethernet_ip4_mcast_dst_addr (void);
551const u8 *ethernet_ip6_mcast_dst_addr (void);
Neale Rannsb80c5362016-10-08 13:03:40 +0100552
Jean-Mickael Guerin8941ec22016-03-04 14:14:21 +0100553extern vlib_node_registration_t ethernet_input_node;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700554
555#endif /* included_ethernet_h */
Keith Burns (alagalah)e70dcc82016-08-15 18:33:19 -0700556
557/*
558 * fd.io coding-style-patch-verification: ON
559 *
560 * Local Variables:
561 * eval: (c-set-style "gnu")
562 * End:
563 */