2 * l2_input.c : layer 2 input packet processing
4 * Copyright (c) 2013 Cisco and/or its affiliates.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
18 #include <vlib/vlib.h>
19 #include <vnet/vnet.h>
20 #include <vnet/pg/pg.h>
21 #include <vnet/ethernet/ethernet.h>
22 #include <vnet/ethernet/packet.h>
23 #include <vnet/ip/ip_packet.h>
24 #include <vnet/ip/ip4_packet.h>
25 #include <vnet/ip/ip6_packet.h>
27 #include <vnet/l2/l2_input.h>
28 #include <vnet/l2/l2_output.h>
29 #include <vnet/l2/feat_bitmap.h>
30 #include <vnet/l2/l2_bvi.h>
31 #include <vnet/l2/l2_fib.h>
33 #include <vppinfra/error.h>
34 #include <vppinfra/hash.h>
35 #include <vppinfra/cache.h>
38 ethernet_arp_hw_interface_link_up_down (vnet_main_t * vnm,
43 ip6_discover_neighbor_hw_interface_link_up_down (vnet_main_t * vnm,
47 // Feature graph node names
48 static char * l2input_feat_names[] = {
49 #define _(sym,name) name,
54 char **l2input_get_feat_names(void) {
55 return l2input_feat_names;
60 /* per-pkt trace data */
67 /* packet trace format function */
68 static u8 * format_l2input_trace (u8 * s, va_list * args)
70 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
71 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
72 l2input_trace_t * t = va_arg (*args, l2input_trace_t *);
74 s = format (s, "l2-input: sw_if_index %d dst %U src %U",
76 format_ethernet_address, t->dst,
77 format_ethernet_address, t->src);
81 l2input_main_t l2input_main;
83 static vlib_node_registration_t l2input_node;
85 #define foreach_l2input_error \
86 _(L2INPUT, "L2 input packets") \
87 _(DROP, "L2 input drops")
90 #define _(sym,str) L2INPUT_ERROR_##sym,
96 static char * l2input_error_strings[] = {
97 #define _(sym,string) string,
110 static_always_inline void
111 classify_and_dispatch (vlib_main_t * vm,
112 vlib_node_runtime_t * node,
114 l2input_main_t * msm,
118 // Load L2 input feature struct
119 // Load bridge domain struct
120 // Parse ethernet header to determine unicast/mcast/broadcast
121 // take L2 input stat
122 // classify packet as IP/UDP/TCP, control, other
123 // mask feature bitmap
124 // go to first node in bitmap
125 // Later: optimize VTM
128 // set tx sw-if-handle
131 __attribute__((unused)) u8 l2bcast;
132 __attribute__((unused)) u8 l2mcast;
133 __attribute__((unused)) u8 l2_stat_kind;
136 l2_input_config_t *config;
137 l2_bridge_domain_t *bd_config;
141 ethernet_header_t * h0;
146 #define get_u32(addr) ( *((u32 *)(addr)) )
147 #define get_u16(addr) ( *((u16 *)(addr)) )
148 #define STATS_IF_LAYER2_UCAST_INPUT_CNT 0
149 #define STATS_IF_LAYER2_MCAST_INPUT_CNT 1
150 #define STATS_IF_LAYER2_BCAST_INPUT_CNT 2
152 // Check for from-BVI processing
153 // When we come from ethernet-input, TX is ~0
154 if (PREDICT_FALSE (vnet_buffer(b0)->sw_if_index[VLIB_TX] != ~0)) {
155 // Set up for a from-bvi packet
160 vnet_buffer(b0)->sw_if_index[VLIB_TX]);
164 // The RX interface can be changed by bvi_to_l2()
165 sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
167 h0 = vlib_buffer_get_current (b0);
168 l3h0 = (u8 *)h0 + vnet_buffer(b0)->l2.l2_len;
170 // Determine L3 packet type. Only need to check the common types.
171 // Used to filter out features that don't apply to common packets.
172 ethertype = clib_net_to_host_u16(get_u16(l3h0 - 2));
173 if (ethertype == ETHERNET_TYPE_IP4) {
174 protocol = ((ip4_header_t *)l3h0)->protocol;
175 if ((protocol == IP_PROTOCOL_UDP) ||
176 (protocol == IP_PROTOCOL_TCP)) {
177 feat_mask = IP_UDP_TCP_FEAT_MASK;
179 feat_mask = IP4_FEAT_MASK;
181 } else if (ethertype == ETHERNET_TYPE_IP6) {
182 protocol = ((ip6_header_t *)l3h0)->protocol;
183 // Don't bother checking for extension headers for now
184 if ((protocol == IP_PROTOCOL_UDP) ||
185 (protocol == IP_PROTOCOL_TCP)) {
186 feat_mask = IP_UDP_TCP_FEAT_MASK;
188 feat_mask = IP6_FEAT_MASK;
190 } else if (ethertype == ETHERNET_TYPE_MPLS_UNICAST) {
191 feat_mask = IP6_FEAT_MASK;
193 // allow all features
197 // determine layer2 kind for stat and mask
198 mcast_dmac = ethernet_address_cast(h0->dst_address);
201 l2_stat_kind = STATS_IF_LAYER2_UCAST_INPUT_CNT;
202 if (PREDICT_FALSE (mcast_dmac)) {
203 u32 *dsthi = (u32 *) &h0->dst_address[0];
204 u32 *dstlo = (u32 *) &h0->dst_address[2];
206 // Disable bridge forwarding (flooding will execute instead if not xconnect)
207 feat_mask &= ~(L2INPUT_FEAT_FWD | L2INPUT_FEAT_UU_FLOOD);
208 if (ethertype != ETHERNET_TYPE_ARP) // Disable ARP-term for non-ARP packet
209 feat_mask &= ~(L2INPUT_FEAT_ARP_TERM);
211 // dest mac is multicast or broadcast
212 if ((*dstlo == 0xFFFFFFFF) && (*dsthi == 0xFFFFFFFF)) {
213 // dest mac == FF:FF:FF:FF:FF:FF
214 l2_stat_kind = STATS_IF_LAYER2_BCAST_INPUT_CNT;
217 l2_stat_kind = STATS_IF_LAYER2_MCAST_INPUT_CNT;
221 // TODO: take l2 stat
223 // Get config for the input interface
224 config = vec_elt_at_index(msm->configs, sw_if_index0);
226 // Save split horizon group, use 0 for BVI to make sure not dropped
227 vnet_buffer(b0)->l2.shg = bvi_flg ? 0 : config->shg;
229 if (config->xconnect) {
230 // Set the output interface
231 vnet_buffer(b0)->sw_if_index[VLIB_TX] = config->output_sw_if_index;
235 // Do bridge-domain processing
236 bd_index0 = config->bd_index;
237 // save BD ID for next feature graph nodes
238 vnet_buffer(b0)->l2.bd_index = bd_index0;
240 // Get config for the bridge domain interface
241 bd_config = vec_elt_at_index(msm->bd_configs, bd_index0);
243 // Process bridge domain feature enables.
244 // To perform learning/flooding/forwarding, the corresponding bit
245 // must be enabled in both the input interface config and in the
246 // bridge domain config. In the bd_bitmap, bits for features other
247 // than learning/flooding/forwarding should always be set.
248 feat_mask = feat_mask & bd_config->feature_bitmap;
251 // mask out features from bitmap using packet type and bd config
252 feature_bitmap = config->feature_bitmap & feat_mask;
254 // save for next feature graph nodes
255 vnet_buffer(b0)->l2.feature_bitmap = feature_bitmap;
257 // Determine the next node
258 *next0 = feat_bitmap_get_next_node_index(msm->feat_next_node_index,
264 l2input_node_fn (vlib_main_t * vm,
265 vlib_node_runtime_t * node,
266 vlib_frame_t * frame)
268 u32 n_left_from, * from, * to_next;
269 l2input_next_t next_index;
270 l2input_main_t * msm = &l2input_main;
271 vlib_node_t *n = vlib_get_node (vm, l2input_node.index);
272 u32 node_counter_base_index = n->error_heap_index;
273 vlib_error_main_t * em = &vm->error_main;
274 u32 cpu_index = os_get_cpu_number();
276 from = vlib_frame_vector_args (frame);
277 n_left_from = frame->n_vectors; /* number of packets to process */
278 next_index = node->cached_next_index;
280 while (n_left_from > 0)
284 /* get space to enqueue frame to graph node "next_index" */
285 vlib_get_next_frame (vm, node, next_index,
286 to_next, n_left_to_next);
288 while (n_left_from >= 6 && n_left_to_next >= 2)
291 vlib_buffer_t * b0, * b1;
293 u32 sw_if_index0, sw_if_index1;
295 /* Prefetch next iteration. */
297 vlib_buffer_t * p2, * p3, * p4 , * p5;
298 u32 sw_if_index2, sw_if_index3;
300 p2 = vlib_get_buffer (vm, from[2]);
301 p3 = vlib_get_buffer (vm, from[3]);
302 p4 = vlib_get_buffer (vm, from[4]);
303 p5 = vlib_get_buffer (vm, from[5]);
305 // Prefetch the buffer header and packet for the N+2 loop iteration
306 vlib_prefetch_buffer_header (p4, LOAD);
307 vlib_prefetch_buffer_header (p5, LOAD);
309 CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE);
310 CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE);
312 // Prefetch the input config for the N+1 loop iteration
313 // This depends on the buffer header above
314 sw_if_index2 = vnet_buffer(p2)->sw_if_index[VLIB_RX];
315 sw_if_index3 = vnet_buffer(p3)->sw_if_index[VLIB_RX];
316 CLIB_PREFETCH (&msm->configs[sw_if_index2], CLIB_CACHE_LINE_BYTES, LOAD);
317 CLIB_PREFETCH (&msm->configs[sw_if_index3], CLIB_CACHE_LINE_BYTES, LOAD);
319 // Don't bother prefetching the bridge-domain config (which
320 // depends on the input config above). Only a small number of
321 // bridge domains are expected. Plus the structure is small
322 // and several fit in a cache line.
325 /* speculatively enqueue b0 and b1 to the current next frame */
326 /* bi is "buffer index", b is pointer to the buffer */
327 to_next[0] = bi0 = from[0];
328 to_next[1] = bi1 = from[1];
334 b0 = vlib_get_buffer (vm, bi0);
335 b1 = vlib_get_buffer (vm, bi1);
337 if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE))) {
338 /* RX interface handles */
339 sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
340 sw_if_index1 = vnet_buffer(b1)->sw_if_index[VLIB_RX];
342 if (b0->flags & VLIB_BUFFER_IS_TRACED) {
343 ethernet_header_t * h0 = vlib_buffer_get_current (b0);
345 vlib_add_trace (vm, node, b0, sizeof (*t));
346 t->sw_if_index = sw_if_index0;
347 memcpy(t->src, h0->src_address, 6);
348 memcpy(t->dst, h0->dst_address, 6);
350 if (b1->flags & VLIB_BUFFER_IS_TRACED) {
351 ethernet_header_t * h1 = vlib_buffer_get_current (b1);
353 vlib_add_trace (vm, node, b1, sizeof (*t));
354 t->sw_if_index = sw_if_index1;
355 memcpy(t->src, h1->src_address, 6);
356 memcpy(t->dst, h1->dst_address, 6);
360 em->counters[node_counter_base_index + L2INPUT_ERROR_L2INPUT] += 2;
362 classify_and_dispatch (vm,
369 classify_and_dispatch (vm,
376 /* verify speculative enqueues, maybe switch current next frame */
377 /* if next0==next1==next_index then nothing special needs to be done */
378 vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
379 to_next, n_left_to_next,
380 bi0, bi1, next0, next1);
383 while (n_left_from > 0 && n_left_to_next > 0)
390 /* speculatively enqueue b0 to the current next frame */
398 b0 = vlib_get_buffer (vm, bi0);
400 if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
401 && (b0->flags & VLIB_BUFFER_IS_TRACED))) {
402 ethernet_header_t * h0 = vlib_buffer_get_current (b0);
404 vlib_add_trace (vm, node, b0, sizeof (*t));
405 sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
406 t->sw_if_index = sw_if_index0;
407 memcpy(t->src, h0->src_address, 6);
408 memcpy(t->dst, h0->dst_address, 6);
411 em->counters[node_counter_base_index + L2INPUT_ERROR_L2INPUT] += 1;
413 classify_and_dispatch (vm,
420 /* verify speculative enqueue, maybe switch current next frame */
421 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
422 to_next, n_left_to_next,
426 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
429 return frame->n_vectors;
433 VLIB_REGISTER_NODE (l2input_node,static) = {
434 .function = l2input_node_fn,
436 .vector_size = sizeof (u32),
437 .format_trace = format_l2input_trace,
438 .format_buffer = format_ethernet_header_with_length,
439 .type = VLIB_NODE_TYPE_INTERNAL,
441 .n_errors = ARRAY_LEN(l2input_error_strings),
442 .error_strings = l2input_error_strings,
444 .n_next_nodes = L2INPUT_N_NEXT,
446 /* edit / add dispositions here */
448 [L2INPUT_NEXT_LEARN] = "l2-learn",
449 [L2INPUT_NEXT_FWD] = "l2-fwd",
450 [L2INPUT_NEXT_DROP] = "error-drop",
454 clib_error_t *l2input_init (vlib_main_t *vm)
456 l2input_main_t * mp = &l2input_main;
459 mp->vnet_main = vnet_get_main();
461 // Get packets RX'd from L2 interfaces
462 ethernet_register_l2_input (vm, l2input_node.index);
464 // Create the config vector
465 vec_validate(mp->configs, 100);
466 // create 100 sw interface entries and zero them
468 // Initialize the feature next-node indexes
469 feat_bitmap_init_next_nodes(vm,
472 l2input_get_feat_names(),
473 mp->feat_next_node_index);
478 VLIB_INIT_FUNCTION (l2input_init);
481 // Get a pointer to the config for the given interface
482 l2_input_config_t * l2input_intf_config (u32 sw_if_index)
484 l2input_main_t * mp = &l2input_main;
486 vec_validate(mp->configs, sw_if_index);
487 return vec_elt_at_index(mp->configs, sw_if_index);
490 // Enable (or disable) the feature in the bitmap for the given interface
491 u32 l2input_intf_bitmap_enable (u32 sw_if_index,
495 l2input_main_t * mp = &l2input_main;
496 l2_input_config_t *config;
498 vec_validate(mp->configs, sw_if_index);
499 config = vec_elt_at_index(mp->configs, sw_if_index);
502 config->feature_bitmap |= feature_bitmap;
504 config->feature_bitmap &= ~feature_bitmap;
507 return config->feature_bitmap;
512 // Set the subinterface to run in l2 or l3 mode.
513 // for L3 mode, just the sw_if_index is specified
514 // for bridged mode, the bd id and bvi flag are also specified
515 // for xconnect mode, the peer sw_if_index is also specified
516 // Return 0 if ok, or non-0 if there was an error
518 u32 set_int_l2_mode (vlib_main_t * vm,
519 vnet_main_t * vnet_main,
522 u32 bd_index, // for bridged interface
523 u32 bvi, // the bridged interface is the BVI
524 u32 shg, // the bridged interface's split horizon group
525 u32 xc_sw_if_index) // peer interface for xconnect
527 l2input_main_t * mp = &l2input_main;
528 vnet_main_t * vnm = vnet_get_main();
529 vnet_hw_interface_t * hi;
530 l2_output_config_t * out_config;
531 l2_input_config_t * config;
532 l2_bridge_domain_t * bd_config;
533 l2_flood_member_t member;
535 i32 l2_if_adjust = 0;
537 hi = vnet_get_sup_hw_interface (vnet_main, sw_if_index);
539 vec_validate(mp->configs, sw_if_index);
540 config = vec_elt_at_index(mp->configs, sw_if_index);
542 if (config->bridge) {
543 // Interface is already in bridge mode. Undo the existing config.
544 bd_config = vec_elt_at_index(mp->bd_configs, config->bd_index);
546 // remove interface from flood vector
547 bd_remove_member (bd_config, sw_if_index);
549 // undo any BVI-related config
550 if (bd_config->bvi_sw_if_index == sw_if_index) {
551 bd_config->bvi_sw_if_index = ~0;
554 // restore output node
555 hi->output_node_index = bd_config->saved_bvi_output_node_index;
557 // delete the l2fib entry for the bvi interface
558 mac = *((u64 *)hi->hw_address);
559 l2fib_del_entry (mac, config->bd_index);
561 // Let ARP and NDP know that the output node index changed
562 ethernet_arp_hw_interface_link_up_down(vnet_main, hi->hw_if_index, 0);
563 ip6_discover_neighbor_hw_interface_link_up_down(vnet_main, hi->hw_if_index, 0);
566 } else if (config->xconnect) {
570 // Initialize the l2-input configuration for the interface
571 if (mode == MODE_L3) {
572 config->xconnect = 0;
575 config->bd_index = 0;
576 config->feature_bitmap = L2INPUT_FEAT_DROP;
577 } else if (mode == MODE_L2_CLASSIFY) {
578 config->xconnect = 1;
580 config->output_sw_if_index = xc_sw_if_index;
582 // Make sure last-chance drop is configured
583 config->feature_bitmap |= L2INPUT_FEAT_DROP | L2INPUT_FEAT_CLASSIFY;
585 // Make sure bridging features are disabled
586 config->feature_bitmap &=
587 ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD);
588 shg = 0; // not used in xconnect
590 // Insure all packets go to ethernet-input
591 ethernet_set_rx_redirect (vnet_main, hi, 1);
594 if (mode == MODE_L2_BRIDGE) {
596 * Remove a check that the interface must be an Ethernet.
597 * Specifically so we can bridge to L3 tunnel interfaces.
599 * if (hi->hw_class_index != ethernet_hw_interface_class.index)
603 return MODE_ERROR_ETH; // non-ethernet
605 config->xconnect = 0;
607 config->bd_index = bd_index;
609 // Enable forwarding, flooding, learning and ARP termination by default
610 // (note that ARP term is disabled on BD feature bitmap by default)
611 config->feature_bitmap |= L2INPUT_FEAT_FWD | L2INPUT_FEAT_UU_FLOOD |
612 L2INPUT_FEAT_FLOOD | L2INPUT_FEAT_LEARN | L2INPUT_FEAT_ARP_TERM;
614 // Make sure last-chance drop is configured
615 config->feature_bitmap |= L2INPUT_FEAT_DROP;
617 // Make sure xconnect is disabled
618 config->feature_bitmap &= ~L2INPUT_FEAT_XCONNECT;
620 // Set up bridge domain
621 vec_validate(mp->bd_configs, bd_index);
622 bd_config = vec_elt_at_index(mp->bd_configs, bd_index);
623 bd_validate (bd_config);
625 // TODO: think: add l2fib entry even for non-bvi interface?
627 // Do BVI interface initializations
629 // insure BD has no bvi interface (or replace that one with this??)
630 if (bd_config->bvi_sw_if_index != ~0) {
631 return MODE_ERROR_BVI_DEF; // bd already has a bvi interface
633 bd_config->bvi_sw_if_index = sw_if_index;
636 // make BVI outputs go to l2-input
637 bd_config->saved_bvi_output_node_index = hi->output_node_index;
638 hi->output_node_index = l2input_node.index;
640 // create the l2fib entry for the bvi interface
641 mac = *((u64 *)hi->hw_address);
642 l2fib_add_entry (mac, bd_index, sw_if_index, 1, 0, 1); // static + bvi
644 // Disable learning by default. no use since l2fib entry is static.
645 config->feature_bitmap &= ~L2INPUT_FEAT_LEARN;
647 // Let ARP and NDP know that the output_index_node changed so they
648 // can send requests via BVI to BD
649 ethernet_arp_hw_interface_link_up_down(vnet_main, hi->hw_if_index, 0);
650 ip6_discover_neighbor_hw_interface_link_up_down(vnet_main, hi->hw_if_index, 0);
653 // Add interface to bridge-domain flood vector
654 member.sw_if_index = sw_if_index;
655 member.flags = bvi ? L2_FLOOD_MEMBER_BVI : L2_FLOOD_MEMBER_NORMAL;
657 bd_add_member (bd_config, &member);
660 config->xconnect = 1;
662 config->output_sw_if_index = xc_sw_if_index;
664 // Make sure last-chance drop is configured
665 config->feature_bitmap |= L2INPUT_FEAT_DROP;
667 // Make sure bridging features are disabled
668 config->feature_bitmap &= ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD);
670 config->feature_bitmap |= L2INPUT_FEAT_XCONNECT;
671 shg = 0; // not used in xconnect
674 // set up split-horizon group
676 out_config = l2output_intf_config (sw_if_index);
677 out_config->shg = shg;
679 // Test: remove this when non-IP features can be configured.
680 // Enable a non-IP feature to test IP feature masking
681 // config->feature_bitmap |= L2INPUT_FEAT_CTRL_PKT;
686 // Adjust count of L2 interfaces
687 hi->l2_if_count += l2_if_adjust;
689 if (hi->hw_class_index == ethernet_hw_interface_class.index) {
690 if ((hi->l2_if_count == 1) && (l2_if_adjust == 1)) {
691 // Just added first L2 interface on this port
693 // Set promiscuous mode on the l2 interface
694 ethernet_set_flags (vnet_main, hi->hw_if_index,
695 ETHERNET_INTERFACE_FLAG_ACCEPT_ALL);
697 // Insure all packets go to ethernet-input
698 ethernet_set_rx_redirect (vnet_main, hi, 1);
700 } else if ((hi->l2_if_count == 0) && (l2_if_adjust == -1)) {
701 // Just removed only L2 subinterface on this port
703 // Disable promiscuous mode on the l2 interface
704 ethernet_set_flags (vnet_main, hi->hw_if_index, 0);
706 // Allow ip packets to go directly to ip4-input etc
707 ethernet_set_rx_redirect (vnet_main, hi, 0);
711 // Set up the L2/L3 flag in the interface parsing tables
712 ethernet_sw_interface_set_l2_mode(vnm, sw_if_index, (mode!=MODE_L3));
717 // set subinterface in bridging mode with a bridge-domain ID
718 // The CLI format is:
719 // set interface l2 bridge <interface> <bd> [bvi] [split-horizon-group]
720 static clib_error_t *
721 int_l2_bridge (vlib_main_t * vm,
722 unformat_input_t * input,
723 vlib_cli_command_t * cmd)
725 vnet_main_t * vnm = vnet_get_main();
726 clib_error_t * error = 0;
733 if (! unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
735 error = clib_error_return (0, "unknown interface `%U'",
736 format_unformat_error, input);
740 if (!unformat (input, "%d", &bd_id)) {
741 error = clib_error_return (0, "expected bridge domain ID `%U'",
742 format_unformat_error, input);
746 bd_index = bd_find_or_add_bd_index (&bd_main, bd_id);
749 bvi = unformat (input, "bvi");
751 // optional split horizon group
753 (void) unformat (input, "%d", &shg);
755 // set the interface mode
756 if ((rc = set_int_l2_mode(vm, vnm, MODE_L2_BRIDGE, sw_if_index, bd_index, bvi, shg, 0))) {
757 if (rc == MODE_ERROR_ETH) {
758 error = clib_error_return (0, "bridged interface must be ethernet",
759 format_unformat_error, input);
760 } else if (rc == MODE_ERROR_BVI_DEF) {
761 error = clib_error_return (0, "bridge-domain already has a bvi interface",
762 format_unformat_error, input);
764 error = clib_error_return (0, "invalid configuration for interface",
765 format_unformat_error, input);
774 VLIB_CLI_COMMAND (int_l2_bridge_cli, static) = {
775 .path = "set interface l2 bridge",
776 .short_help = "set interface to L2 bridging mode in <bridge-domain ID> [bvi] [shg]",
777 .function = int_l2_bridge,
780 // set subinterface in xconnect mode with another interface
781 // The CLI format is:
782 // set interface l2 xconnect <interface> <peer interface>
783 static clib_error_t *
784 int_l2_xc (vlib_main_t * vm,
785 unformat_input_t * input,
786 vlib_cli_command_t * cmd)
788 vnet_main_t * vnm = vnet_get_main();
789 clib_error_t * error = 0;
793 if (! unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
795 error = clib_error_return (0, "unknown interface `%U'",
796 format_unformat_error, input);
800 if (! unformat_user (input, unformat_vnet_sw_interface, vnm, &xc_sw_if_index))
802 error = clib_error_return (0, "unknown peer interface `%U'",
803 format_unformat_error, input);
807 // set the interface mode
808 if (set_int_l2_mode(vm, vnm, MODE_L2_XC, sw_if_index, 0, 0, 0, xc_sw_if_index)) {
809 error = clib_error_return (0, "invalid configuration for interface",
810 format_unformat_error, input);
818 VLIB_CLI_COMMAND (int_l2_xc_cli, static) = {
819 .path = "set interface l2 xconnect",
820 .short_help = "set interface to L2 cross-connect mode with <peer interface>",
821 .function = int_l2_xc,
824 // set subinterface in L3 mode
825 // The CLI format is:
826 // set interface l3 <interface>
827 static clib_error_t *
828 int_l3 (vlib_main_t * vm,
829 unformat_input_t * input,
830 vlib_cli_command_t * cmd)
832 vnet_main_t * vnm = vnet_get_main();
833 clib_error_t * error = 0;
836 if (! unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
838 error = clib_error_return (0, "unknown interface `%U'",
839 format_unformat_error, input);
843 // set the interface mode
844 if (set_int_l2_mode(vm, vnm, MODE_L3, sw_if_index, 0, 0, 0, 0)) {
845 error = clib_error_return (0, "invalid configuration for interface",
846 format_unformat_error, input);
854 VLIB_CLI_COMMAND (int_l3_cli, static) = {
855 .path = "set interface l3",
856 .short_help = "set interface to L3 mode",
860 // The CLI format is:
861 // show mode [<if-name1> <if-name2> ...]
862 static clib_error_t *
863 show_int_mode (vlib_main_t * vm,
864 unformat_input_t * input,
865 vlib_cli_command_t * cmd)
867 vnet_main_t * vnm = vnet_get_main();
868 clib_error_t * error = 0;
871 vnet_interface_main_t * im = &vnm->interface_main;
872 vnet_sw_interface_t * si, * sis = 0;
873 l2input_main_t * mp = &l2input_main;
874 l2_input_config_t * config;
876 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
880 /* See if user wants to show specific interface */
881 if (unformat (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
883 si = pool_elt_at_index (im->sw_interfaces, sw_if_index);
884 vec_add1 (sis, si[0]);
888 error = clib_error_return (0, "unknown input `%U'",
889 format_unformat_error, input);
895 if (vec_len (sis) == 0) /* Get all interfaces */
897 /* Gather interfaces. */
898 sis = vec_new (vnet_sw_interface_t, pool_elts (im->sw_interfaces));
900 pool_foreach (si, im->sw_interfaces, ({ vec_add1 (sis, si[0]); }));
903 vec_foreach (si, sis)
905 vec_validate(mp->configs, si->sw_if_index);
906 config = vec_elt_at_index(mp->configs, si->sw_if_index);
907 if (config->bridge) {
910 bd_id = l2input_main.bd_configs[config->bd_index].bd_id;
912 args = format (0, "bd_id %d%s%d", bd_id,
913 config->bvi ? " bvi shg " : " shg ", config->shg);
914 } else if (config->xconnect) {
915 mode = "l2 xconnect";
916 args = format (0, "%U",
917 format_vnet_sw_if_index_name,
918 vnm, config->output_sw_if_index);
921 args = format (0, " ");
923 vlib_cli_output (vm, "%s %U %v\n",
925 format_vnet_sw_if_index_name,
926 vnm, si->sw_if_index,
937 VLIB_CLI_COMMAND (show_l2_mode, static) = {
939 .short_help = "show mode [<if-name1> <if-name2> ...]",
940 .function = show_int_mode,
943 #define foreach_l2_init_function \
944 _(feat_bitmap_drop_init) \
946 _(l2_classify_init) \
953 _(l2_efp_filter_init) \
961 clib_error_t *l2_init (vlib_main_t * vm)
963 clib_error_t * error;
966 if ((error = vlib_call_init_function (vm, a))) return error; } \
968 foreach_l2_init_function;
973 VLIB_INIT_FUNCTION (l2_init);