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 // Feature graph node names
39 static char * l2input_feat_names[] = {
40 #define _(sym,name) name,
45 char **l2input_get_feat_names(void) {
46 return l2input_feat_names;
51 /* per-pkt trace data */
58 /* packet trace format function */
59 static u8 * format_l2input_trace (u8 * s, va_list * args)
61 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
62 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
63 l2input_trace_t * t = va_arg (*args, l2input_trace_t *);
65 s = format (s, "l2-input: sw_if_index %d dst %U src %U",
67 format_ethernet_address, t->dst,
68 format_ethernet_address, t->src);
72 l2input_main_t l2input_main;
74 #define foreach_l2input_error \
75 _(L2INPUT, "L2 input packets") \
76 _(DROP, "L2 input drops")
79 #define _(sym,str) L2INPUT_ERROR_##sym,
85 static char * l2input_error_strings[] = {
86 #define _(sym,string) string,
99 static_always_inline void
100 classify_and_dispatch (vlib_main_t * vm,
101 vlib_node_runtime_t * node,
103 l2input_main_t * msm,
107 // Load L2 input feature struct
108 // Load bridge domain struct
109 // Parse ethernet header to determine unicast/mcast/broadcast
110 // take L2 input stat
111 // classify packet as IP/UDP/TCP, control, other
112 // mask feature bitmap
113 // go to first node in bitmap
114 // Later: optimize VTM
117 // set tx sw-if-handle
120 __attribute__((unused)) u8 l2bcast;
121 __attribute__((unused)) u8 l2mcast;
122 __attribute__((unused)) u8 l2_stat_kind;
125 l2_input_config_t *config;
126 l2_bridge_domain_t *bd_config;
130 ethernet_header_t * h0;
134 #define get_u32(addr) ( *((u32 *)(addr)) )
135 #define get_u16(addr) ( *((u16 *)(addr)) )
136 #define STATS_IF_LAYER2_UCAST_INPUT_CNT 0
137 #define STATS_IF_LAYER2_MCAST_INPUT_CNT 1
138 #define STATS_IF_LAYER2_BCAST_INPUT_CNT 2
140 sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
142 h0 = vlib_buffer_get_current (b0);
143 l3h0 = (u8 *)h0 + vnet_buffer(b0)->l2.l2_len;
145 // Determine L3 packet type. Only need to check the common types.
146 // Used to filter out features that don't apply to common packets.
147 ethertype = clib_net_to_host_u16(get_u16(l3h0 - 2));
148 if (ethertype == ETHERNET_TYPE_IP4) {
149 protocol = ((ip4_header_t *)l3h0)->protocol;
150 if ((protocol == IP_PROTOCOL_UDP) ||
151 (protocol == IP_PROTOCOL_TCP)) {
152 feat_mask = IP_UDP_TCP_FEAT_MASK;
154 feat_mask = IP4_FEAT_MASK;
156 } else if (ethertype == ETHERNET_TYPE_IP6) {
157 protocol = ((ip6_header_t *)l3h0)->protocol;
158 // Don't bother checking for extension headers for now
159 if ((protocol == IP_PROTOCOL_UDP) ||
160 (protocol == IP_PROTOCOL_TCP)) {
161 feat_mask = IP_UDP_TCP_FEAT_MASK;
163 feat_mask = IP6_FEAT_MASK;
165 } else if (ethertype == ETHERNET_TYPE_MPLS_UNICAST) {
166 feat_mask = IP6_FEAT_MASK;
168 // allow all features
172 // determine layer2 kind for stat and mask
173 mcast_dmac = ethernet_address_cast(h0->dst_address);
176 l2_stat_kind = STATS_IF_LAYER2_UCAST_INPUT_CNT;
177 if (PREDICT_FALSE (mcast_dmac)) {
178 u32 *dsthi = (u32 *) &h0->dst_address[0];
179 u32 *dstlo = (u32 *) &h0->dst_address[2];
181 // Disable bridge forwarding (flooding will execute instead if not xconnect)
182 feat_mask &= ~(L2INPUT_FEAT_FWD | L2INPUT_FEAT_UU_FLOOD);
183 if (ethertype != ETHERNET_TYPE_ARP) // Disable ARP-term for non-ARP packet
184 feat_mask &= ~(L2INPUT_FEAT_ARP_TERM);
186 // dest mac is multicast or broadcast
187 if ((*dstlo == 0xFFFFFFFF) && (*dsthi == 0xFFFFFFFF)) {
188 // dest mac == FF:FF:FF:FF:FF:FF
189 l2_stat_kind = STATS_IF_LAYER2_BCAST_INPUT_CNT;
192 l2_stat_kind = STATS_IF_LAYER2_MCAST_INPUT_CNT;
196 // TODO: take l2 stat
198 // Get config for the input interface
199 config = vec_elt_at_index(msm->configs, sw_if_index0);
201 // Save split horizon group
202 vnet_buffer(b0)->l2.shg = config->shg;
204 if (config->xconnect) {
205 // Set the output interface
206 vnet_buffer(b0)->sw_if_index[VLIB_TX] = config->output_sw_if_index;
210 // Check for from-BVI processing, TX is non-~0 if from BVI loopback
211 // Set SHG for BVI packets to 0 so it is not dropped for VXLAN tunnels
212 if (PREDICT_FALSE (vnet_buffer(b0)->sw_if_index[VLIB_TX] != ~0)) {
213 vnet_buffer(b0)->sw_if_index[VLIB_TX] = ~0;
214 vnet_buffer(b0)->l2.shg = 0;
217 // Do bridge-domain processing
218 bd_index0 = config->bd_index;
219 // save BD ID for next feature graph nodes
220 vnet_buffer(b0)->l2.bd_index = bd_index0;
222 // Get config for the bridge domain interface
223 bd_config = vec_elt_at_index(msm->bd_configs, bd_index0);
225 // Process bridge domain feature enables.
226 // To perform learning/flooding/forwarding, the corresponding bit
227 // must be enabled in both the input interface config and in the
228 // bridge domain config. In the bd_bitmap, bits for features other
229 // than learning/flooding/forwarding should always be set.
230 feat_mask = feat_mask & bd_config->feature_bitmap;
233 // mask out features from bitmap using packet type and bd config
234 feature_bitmap = config->feature_bitmap & feat_mask;
236 // save for next feature graph nodes
237 vnet_buffer(b0)->l2.feature_bitmap = feature_bitmap;
239 // Determine the next node
240 *next0 = feat_bitmap_get_next_node_index(msm->feat_next_node_index,
246 l2input_node_fn (vlib_main_t * vm,
247 vlib_node_runtime_t * node,
248 vlib_frame_t * frame)
250 u32 n_left_from, * from, * to_next;
251 l2input_next_t next_index;
252 l2input_main_t * msm = &l2input_main;
253 vlib_node_t *n = vlib_get_node (vm, l2input_node.index);
254 u32 node_counter_base_index = n->error_heap_index;
255 vlib_error_main_t * em = &vm->error_main;
256 u32 cpu_index = os_get_cpu_number();
258 from = vlib_frame_vector_args (frame);
259 n_left_from = frame->n_vectors; /* number of packets to process */
260 next_index = node->cached_next_index;
262 while (n_left_from > 0)
266 /* get space to enqueue frame to graph node "next_index" */
267 vlib_get_next_frame (vm, node, next_index,
268 to_next, n_left_to_next);
270 while (n_left_from >= 6 && n_left_to_next >= 2)
273 vlib_buffer_t * b0, * b1;
275 u32 sw_if_index0, sw_if_index1;
277 /* Prefetch next iteration. */
279 vlib_buffer_t * p2, * p3, * p4 , * p5;
280 u32 sw_if_index2, sw_if_index3;
282 p2 = vlib_get_buffer (vm, from[2]);
283 p3 = vlib_get_buffer (vm, from[3]);
284 p4 = vlib_get_buffer (vm, from[4]);
285 p5 = vlib_get_buffer (vm, from[5]);
287 // Prefetch the buffer header and packet for the N+2 loop iteration
288 vlib_prefetch_buffer_header (p4, LOAD);
289 vlib_prefetch_buffer_header (p5, LOAD);
291 CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE);
292 CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE);
294 // Prefetch the input config for the N+1 loop iteration
295 // This depends on the buffer header above
296 sw_if_index2 = vnet_buffer(p2)->sw_if_index[VLIB_RX];
297 sw_if_index3 = vnet_buffer(p3)->sw_if_index[VLIB_RX];
298 CLIB_PREFETCH (&msm->configs[sw_if_index2], CLIB_CACHE_LINE_BYTES, LOAD);
299 CLIB_PREFETCH (&msm->configs[sw_if_index3], CLIB_CACHE_LINE_BYTES, LOAD);
301 // Don't bother prefetching the bridge-domain config (which
302 // depends on the input config above). Only a small number of
303 // bridge domains are expected. Plus the structure is small
304 // and several fit in a cache line.
307 /* speculatively enqueue b0 and b1 to the current next frame */
308 /* bi is "buffer index", b is pointer to the buffer */
309 to_next[0] = bi0 = from[0];
310 to_next[1] = bi1 = from[1];
316 b0 = vlib_get_buffer (vm, bi0);
317 b1 = vlib_get_buffer (vm, bi1);
319 if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE))) {
320 /* RX interface handles */
321 sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
322 sw_if_index1 = vnet_buffer(b1)->sw_if_index[VLIB_RX];
324 if (b0->flags & VLIB_BUFFER_IS_TRACED) {
325 ethernet_header_t * h0 = vlib_buffer_get_current (b0);
327 vlib_add_trace (vm, node, b0, sizeof (*t));
328 t->sw_if_index = sw_if_index0;
329 clib_memcpy(t->src, h0->src_address, 6);
330 clib_memcpy(t->dst, h0->dst_address, 6);
332 if (b1->flags & VLIB_BUFFER_IS_TRACED) {
333 ethernet_header_t * h1 = vlib_buffer_get_current (b1);
335 vlib_add_trace (vm, node, b1, sizeof (*t));
336 t->sw_if_index = sw_if_index1;
337 clib_memcpy(t->src, h1->src_address, 6);
338 clib_memcpy(t->dst, h1->dst_address, 6);
342 em->counters[node_counter_base_index + L2INPUT_ERROR_L2INPUT] += 2;
344 classify_and_dispatch (vm,
351 classify_and_dispatch (vm,
358 /* verify speculative enqueues, maybe switch current next frame */
359 /* if next0==next1==next_index then nothing special needs to be done */
360 vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
361 to_next, n_left_to_next,
362 bi0, bi1, next0, next1);
365 while (n_left_from > 0 && n_left_to_next > 0)
372 /* speculatively enqueue b0 to the current next frame */
380 b0 = vlib_get_buffer (vm, bi0);
382 if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
383 && (b0->flags & VLIB_BUFFER_IS_TRACED))) {
384 ethernet_header_t * h0 = vlib_buffer_get_current (b0);
386 vlib_add_trace (vm, node, b0, sizeof (*t));
387 sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
388 t->sw_if_index = sw_if_index0;
389 clib_memcpy(t->src, h0->src_address, 6);
390 clib_memcpy(t->dst, h0->dst_address, 6);
393 em->counters[node_counter_base_index + L2INPUT_ERROR_L2INPUT] += 1;
395 classify_and_dispatch (vm,
402 /* verify speculative enqueue, maybe switch current next frame */
403 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
404 to_next, n_left_to_next,
408 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
411 return frame->n_vectors;
415 VLIB_REGISTER_NODE (l2input_node) = {
416 .function = l2input_node_fn,
418 .vector_size = sizeof (u32),
419 .format_trace = format_l2input_trace,
420 .format_buffer = format_ethernet_header_with_length,
421 .type = VLIB_NODE_TYPE_INTERNAL,
423 .n_errors = ARRAY_LEN(l2input_error_strings),
424 .error_strings = l2input_error_strings,
426 .n_next_nodes = L2INPUT_N_NEXT,
428 /* edit / add dispositions here */
430 [L2INPUT_NEXT_LEARN] = "l2-learn",
431 [L2INPUT_NEXT_FWD] = "l2-fwd",
432 [L2INPUT_NEXT_DROP] = "error-drop",
436 VLIB_NODE_FUNCTION_MULTIARCH (l2input_node, l2input_node_fn)
438 clib_error_t *l2input_init (vlib_main_t *vm)
440 l2input_main_t * mp = &l2input_main;
443 mp->vnet_main = vnet_get_main();
445 // Get packets RX'd from L2 interfaces
446 ethernet_register_l2_input (vm, l2input_node.index);
448 // Create the config vector
449 vec_validate(mp->configs, 100);
450 // create 100 sw interface entries and zero them
452 // Initialize the feature next-node indexes
453 feat_bitmap_init_next_nodes(vm,
456 l2input_get_feat_names(),
457 mp->feat_next_node_index);
462 VLIB_INIT_FUNCTION (l2input_init);
465 // Get a pointer to the config for the given interface
466 l2_input_config_t * l2input_intf_config (u32 sw_if_index)
468 l2input_main_t * mp = &l2input_main;
470 vec_validate(mp->configs, sw_if_index);
471 return vec_elt_at_index(mp->configs, sw_if_index);
474 // Enable (or disable) the feature in the bitmap for the given interface
475 u32 l2input_intf_bitmap_enable (u32 sw_if_index,
479 l2input_main_t * mp = &l2input_main;
480 l2_input_config_t *config;
482 vec_validate(mp->configs, sw_if_index);
483 config = vec_elt_at_index(mp->configs, sw_if_index);
486 config->feature_bitmap |= feature_bitmap;
488 config->feature_bitmap &= ~feature_bitmap;
491 return config->feature_bitmap;
494 u32 l2input_set_bridge_features(u32 bd_index,
495 u32 feat_mask, u32 feat_value)
497 l2_bridge_domain_t * bd_config;
498 vec_validate (l2input_main.bd_configs, bd_index);
499 bd_config = vec_elt_at_index(l2input_main.bd_configs, bd_index);
500 bd_validate (bd_config);
501 bd_config->feature_bitmap = (bd_config->feature_bitmap & ~feat_mask) | feat_value;
502 return bd_config->feature_bitmap;
505 // Set the subinterface to run in l2 or l3 mode.
506 // for L3 mode, just the sw_if_index is specified
507 // for bridged mode, the bd id and bvi flag are also specified
508 // for xconnect mode, the peer sw_if_index is also specified
509 // Return 0 if ok, or non-0 if there was an error
511 u32 set_int_l2_mode (vlib_main_t * vm,
512 vnet_main_t * vnet_main,
515 u32 bd_index, // for bridged interface
516 u32 bvi, // the bridged interface is the BVI
517 u32 shg, // the bridged interface's split horizon group
518 u32 xc_sw_if_index) // peer interface for xconnect
520 l2input_main_t * mp = &l2input_main;
521 vnet_main_t * vnm = vnet_get_main();
522 vnet_hw_interface_t * hi;
523 l2_output_config_t * out_config;
524 l2_input_config_t * config;
525 l2_bridge_domain_t * bd_config;
526 l2_flood_member_t member;
528 i32 l2_if_adjust = 0;
531 hi = vnet_get_sup_hw_interface (vnet_main, sw_if_index);
533 vec_validate(mp->configs, sw_if_index);
534 config = vec_elt_at_index(mp->configs, sw_if_index);
536 if (config->bridge) {
537 // Interface is already in bridge mode. Undo the existing config.
538 bd_config = vec_elt_at_index(mp->bd_configs, config->bd_index);
540 // remove interface from flood vector
541 bd_remove_member (bd_config, sw_if_index);
543 // undo any BVI-related config
544 if (bd_config->bvi_sw_if_index == sw_if_index) {
545 bd_config->bvi_sw_if_index = ~0;
548 // delete the l2fib entry for the bvi interface
549 mac = *((u64 *)hi->hw_address);
550 l2fib_del_entry (mac, config->bd_index);
552 // Make loop output node send packet back to ethernet-input node
553 slot = vlib_node_add_named_next_with_slot (
554 vm, hi->tx_node_index, "ethernet-input",
555 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
556 ASSERT (slot == VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
559 } else if (config->xconnect) {
563 // Initialize the l2-input configuration for the interface
564 if (mode == MODE_L3) {
565 config->xconnect = 0;
568 config->bd_index = 0;
569 config->feature_bitmap = L2INPUT_FEAT_DROP;
570 } else if (mode == MODE_L2_CLASSIFY) {
571 config->xconnect = 1;
573 config->output_sw_if_index = xc_sw_if_index;
575 // Make sure last-chance drop is configured
576 config->feature_bitmap |= L2INPUT_FEAT_DROP | L2INPUT_FEAT_CLASSIFY;
578 // Make sure bridging features are disabled
579 config->feature_bitmap &=
580 ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD);
581 shg = 0; // not used in xconnect
583 // Insure all packets go to ethernet-input
584 ethernet_set_rx_redirect (vnet_main, hi, 1);
587 if (mode == MODE_L2_BRIDGE) {
589 * Remove a check that the interface must be an Ethernet.
590 * Specifically so we can bridge to L3 tunnel interfaces.
592 * if (hi->hw_class_index != ethernet_hw_interface_class.index)
596 return MODE_ERROR_ETH; // non-ethernet
598 config->xconnect = 0;
600 config->bd_index = bd_index;
602 // Enable forwarding, flooding, learning and ARP termination by default
603 // (note that ARP term is disabled on BD feature bitmap by default)
604 config->feature_bitmap |= L2INPUT_FEAT_FWD | L2INPUT_FEAT_UU_FLOOD |
605 L2INPUT_FEAT_FLOOD | L2INPUT_FEAT_LEARN | L2INPUT_FEAT_ARP_TERM;
607 // Make sure last-chance drop is configured
608 config->feature_bitmap |= L2INPUT_FEAT_DROP;
610 // Make sure xconnect is disabled
611 config->feature_bitmap &= ~L2INPUT_FEAT_XCONNECT;
613 // Set up bridge domain
614 vec_validate(mp->bd_configs, bd_index);
615 bd_config = vec_elt_at_index(mp->bd_configs, bd_index);
616 bd_validate (bd_config);
618 // TODO: think: add l2fib entry even for non-bvi interface?
620 // Do BVI interface initializations
622 // insure BD has no bvi interface (or replace that one with this??)
623 if (bd_config->bvi_sw_if_index != ~0) {
624 return MODE_ERROR_BVI_DEF; // bd already has a bvi interface
626 bd_config->bvi_sw_if_index = sw_if_index;
629 // create the l2fib entry for the bvi interface
630 mac = *((u64 *)hi->hw_address);
631 l2fib_add_entry (mac, bd_index, sw_if_index, 1, 0, 1); // static + bvi
633 // Disable learning by default. no use since l2fib entry is static.
634 config->feature_bitmap &= ~L2INPUT_FEAT_LEARN;
636 // Make loop output node send packet to l2-input node
637 slot = vlib_node_add_named_next_with_slot (
638 vm, hi->tx_node_index, "l2-input",
639 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
640 ASSERT (slot == VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
643 // Add interface to bridge-domain flood vector
644 member.sw_if_index = sw_if_index;
645 member.flags = bvi ? L2_FLOOD_MEMBER_BVI : L2_FLOOD_MEMBER_NORMAL;
647 bd_add_member (bd_config, &member);
650 config->xconnect = 1;
652 config->output_sw_if_index = xc_sw_if_index;
654 // Make sure last-chance drop is configured
655 config->feature_bitmap |= L2INPUT_FEAT_DROP;
657 // Make sure bridging features are disabled
658 config->feature_bitmap &= ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD);
660 config->feature_bitmap |= L2INPUT_FEAT_XCONNECT;
661 shg = 0; // not used in xconnect
664 // set up split-horizon group
666 out_config = l2output_intf_config (sw_if_index);
667 out_config->shg = shg;
669 // Test: remove this when non-IP features can be configured.
670 // Enable a non-IP feature to test IP feature masking
671 // config->feature_bitmap |= L2INPUT_FEAT_CTRL_PKT;
676 // Adjust count of L2 interfaces
677 hi->l2_if_count += l2_if_adjust;
679 if (hi->hw_class_index == ethernet_hw_interface_class.index) {
680 if ((hi->l2_if_count == 1) && (l2_if_adjust == 1)) {
681 // Just added first L2 interface on this port
683 // Set promiscuous mode on the l2 interface
684 ethernet_set_flags (vnet_main, hi->hw_if_index,
685 ETHERNET_INTERFACE_FLAG_ACCEPT_ALL);
687 // Insure all packets go to ethernet-input
688 ethernet_set_rx_redirect (vnet_main, hi, 1);
690 } else if ((hi->l2_if_count == 0) && (l2_if_adjust == -1)) {
691 // Just removed only L2 subinterface on this port
693 // Disable promiscuous mode on the l2 interface
694 ethernet_set_flags (vnet_main, hi->hw_if_index, 0);
696 // Allow ip packets to go directly to ip4-input etc
697 ethernet_set_rx_redirect (vnet_main, hi, 0);
701 // Set up the L2/L3 flag in the interface parsing tables
702 ethernet_sw_interface_set_l2_mode(vnm, sw_if_index, (mode!=MODE_L3));
707 // set subinterface in bridging mode with a bridge-domain ID
708 // The CLI format is:
709 // set interface l2 bridge <interface> <bd> [bvi] [split-horizon-group]
710 static clib_error_t *
711 int_l2_bridge (vlib_main_t * vm,
712 unformat_input_t * input,
713 vlib_cli_command_t * cmd)
715 vnet_main_t * vnm = vnet_get_main();
716 clib_error_t * error = 0;
723 if (! unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
725 error = clib_error_return (0, "unknown interface `%U'",
726 format_unformat_error, input);
730 if (!unformat (input, "%d", &bd_id)) {
731 error = clib_error_return (0, "expected bridge domain ID `%U'",
732 format_unformat_error, input);
736 bd_index = bd_find_or_add_bd_index (&bd_main, bd_id);
739 bvi = unformat (input, "bvi");
741 // optional split horizon group
743 (void) unformat (input, "%d", &shg);
745 // set the interface mode
746 if ((rc = set_int_l2_mode(vm, vnm, MODE_L2_BRIDGE, sw_if_index, bd_index, bvi, shg, 0))) {
747 if (rc == MODE_ERROR_ETH) {
748 error = clib_error_return (0, "bridged interface must be ethernet",
749 format_unformat_error, input);
750 } else if (rc == MODE_ERROR_BVI_DEF) {
751 error = clib_error_return (0, "bridge-domain already has a bvi interface",
752 format_unformat_error, input);
754 error = clib_error_return (0, "invalid configuration for interface",
755 format_unformat_error, input);
764 VLIB_CLI_COMMAND (int_l2_bridge_cli, static) = {
765 .path = "set interface l2 bridge",
766 .short_help = "set interface to L2 bridging mode in <bridge-domain ID> [bvi] [shg]",
767 .function = int_l2_bridge,
770 // set subinterface in xconnect mode with another interface
771 // The CLI format is:
772 // set interface l2 xconnect <interface> <peer interface>
773 static clib_error_t *
774 int_l2_xc (vlib_main_t * vm,
775 unformat_input_t * input,
776 vlib_cli_command_t * cmd)
778 vnet_main_t * vnm = vnet_get_main();
779 clib_error_t * error = 0;
783 if (! unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
785 error = clib_error_return (0, "unknown interface `%U'",
786 format_unformat_error, input);
790 if (! unformat_user (input, unformat_vnet_sw_interface, vnm, &xc_sw_if_index))
792 error = clib_error_return (0, "unknown peer interface `%U'",
793 format_unformat_error, input);
797 // set the interface mode
798 if (set_int_l2_mode(vm, vnm, MODE_L2_XC, sw_if_index, 0, 0, 0, xc_sw_if_index)) {
799 error = clib_error_return (0, "invalid configuration for interface",
800 format_unformat_error, input);
808 VLIB_CLI_COMMAND (int_l2_xc_cli, static) = {
809 .path = "set interface l2 xconnect",
810 .short_help = "set interface to L2 cross-connect mode with <peer interface>",
811 .function = int_l2_xc,
814 // set subinterface in L3 mode
815 // The CLI format is:
816 // set interface l3 <interface>
817 static clib_error_t *
818 int_l3 (vlib_main_t * vm,
819 unformat_input_t * input,
820 vlib_cli_command_t * cmd)
822 vnet_main_t * vnm = vnet_get_main();
823 clib_error_t * error = 0;
826 if (! unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
828 error = clib_error_return (0, "unknown interface `%U'",
829 format_unformat_error, input);
833 // set the interface mode
834 if (set_int_l2_mode(vm, vnm, MODE_L3, sw_if_index, 0, 0, 0, 0)) {
835 error = clib_error_return (0, "invalid configuration for interface",
836 format_unformat_error, input);
844 VLIB_CLI_COMMAND (int_l3_cli, static) = {
845 .path = "set interface l3",
846 .short_help = "set interface to L3 mode",
850 // The CLI format is:
851 // show mode [<if-name1> <if-name2> ...]
852 static clib_error_t *
853 show_int_mode (vlib_main_t * vm,
854 unformat_input_t * input,
855 vlib_cli_command_t * cmd)
857 vnet_main_t * vnm = vnet_get_main();
858 clib_error_t * error = 0;
861 vnet_interface_main_t * im = &vnm->interface_main;
862 vnet_sw_interface_t * si, * sis = 0;
863 l2input_main_t * mp = &l2input_main;
864 l2_input_config_t * config;
866 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
870 /* See if user wants to show specific interface */
871 if (unformat (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
873 si = pool_elt_at_index (im->sw_interfaces, sw_if_index);
874 vec_add1 (sis, si[0]);
878 error = clib_error_return (0, "unknown input `%U'",
879 format_unformat_error, input);
885 if (vec_len (sis) == 0) /* Get all interfaces */
887 /* Gather interfaces. */
888 sis = vec_new (vnet_sw_interface_t, pool_elts (im->sw_interfaces));
890 pool_foreach (si, im->sw_interfaces, ({ vec_add1 (sis, si[0]); }));
893 vec_foreach (si, sis)
895 vec_validate(mp->configs, si->sw_if_index);
896 config = vec_elt_at_index(mp->configs, si->sw_if_index);
897 if (config->bridge) {
900 bd_id = l2input_main.bd_configs[config->bd_index].bd_id;
902 args = format (0, "bd_id %d%s%d", bd_id,
903 config->bvi ? " bvi shg " : " shg ", config->shg);
904 } else if (config->xconnect) {
905 mode = "l2 xconnect";
906 args = format (0, "%U",
907 format_vnet_sw_if_index_name,
908 vnm, config->output_sw_if_index);
911 args = format (0, " ");
913 vlib_cli_output (vm, "%s %U %v\n",
915 format_vnet_sw_if_index_name,
916 vnm, si->sw_if_index,
927 VLIB_CLI_COMMAND (show_l2_mode, static) = {
929 .short_help = "show mode [<if-name1> <if-name2> ...]",
930 .function = show_int_mode,
933 #define foreach_l2_init_function \
934 _(feat_bitmap_drop_init) \
936 _(l2_classify_init) \
943 _(l2_efp_filter_init) \
951 clib_error_t *l2_init (vlib_main_t * vm)
953 clib_error_t * error;
956 if ((error = vlib_call_init_function (vm, a))) return error; } \
958 foreach_l2_init_function;
963 VLIB_INIT_FUNCTION (l2_init);