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,
42 // Feature graph node names
43 static char * l2input_feat_names[] = {
44 #define _(sym,name) name,
49 char **l2input_get_feat_names(void) {
50 return l2input_feat_names;
55 /* per-pkt trace data */
62 /* packet trace format function */
63 static u8 * format_l2input_trace (u8 * s, va_list * args)
65 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
66 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
67 l2input_trace_t * t = va_arg (*args, l2input_trace_t *);
69 s = format (s, "l2-input: sw_if_index %d dst %U src %U",
71 format_ethernet_address, t->dst,
72 format_ethernet_address, t->src);
76 l2input_main_t l2input_main;
78 static vlib_node_registration_t l2input_node;
80 #define foreach_l2input_error \
81 _(L2INPUT, "L2 input packets") \
82 _(DROP, "L2 input drops")
85 #define _(sym,str) L2INPUT_ERROR_##sym,
91 static char * l2input_error_strings[] = {
92 #define _(sym,string) string,
105 static_always_inline void
106 classify_and_dispatch (vlib_main_t * vm,
107 vlib_node_runtime_t * node,
109 l2input_main_t * msm,
113 // Load L2 input feature struct
114 // Load bridge domain struct
115 // Parse ethernet header to determine unicast/mcast/broadcast
116 // take L2 input stat
117 // classify packet as IP/UDP/TCP, control, other
118 // mask feature bitmap
119 // go to first node in bitmap
120 // Later: optimize VTM
123 // set tx sw-if-handle
126 __attribute__((unused)) u8 l2bcast;
127 __attribute__((unused)) u8 l2mcast;
128 __attribute__((unused)) u8 l2_stat_kind;
131 l2_input_config_t *config;
132 l2_bridge_domain_t *bd_config;
136 ethernet_header_t * h0;
141 #define get_u32(addr) ( *((u32 *)(addr)) )
142 #define get_u16(addr) ( *((u16 *)(addr)) )
143 #define STATS_IF_LAYER2_UCAST_INPUT_CNT 0
144 #define STATS_IF_LAYER2_MCAST_INPUT_CNT 1
145 #define STATS_IF_LAYER2_BCAST_INPUT_CNT 2
147 // Check for from-BVI processing
148 // When we come from ethernet-input, TX is ~0
149 if (PREDICT_FALSE (vnet_buffer(b0)->sw_if_index[VLIB_TX] != ~0)) {
150 // Set up for a from-bvi packet
155 vnet_buffer(b0)->sw_if_index[VLIB_TX]);
159 // The RX interface can be changed by bvi_to_l2()
160 sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
162 h0 = vlib_buffer_get_current (b0);
163 l3h0 = (u8 *)h0 + vnet_buffer(b0)->l2.l2_len;
165 // Determine L3 packet type. Only need to check the common types.
166 // Used to filter out features that don't apply to common packets.
167 ethertype = clib_net_to_host_u16(get_u16(l3h0 - 2));
168 if (ethertype == ETHERNET_TYPE_IP4) {
169 protocol = ((ip4_header_t *)l3h0)->protocol;
170 if ((protocol == IP_PROTOCOL_UDP) ||
171 (protocol == IP_PROTOCOL_TCP)) {
172 feat_mask = IP_UDP_TCP_FEAT_MASK;
174 feat_mask = IP4_FEAT_MASK;
176 } else if (ethertype == ETHERNET_TYPE_IP6) {
177 protocol = ((ip6_header_t *)l3h0)->protocol;
178 // Don't bother checking for extension headers for now
179 if ((protocol == IP_PROTOCOL_UDP) ||
180 (protocol == IP_PROTOCOL_TCP)) {
181 feat_mask = IP_UDP_TCP_FEAT_MASK;
183 feat_mask = IP6_FEAT_MASK;
185 } else if (ethertype == ETHERNET_TYPE_MPLS_UNICAST) {
186 feat_mask = IP6_FEAT_MASK;
188 // allow all features
192 // determine layer2 kind for stat and mask
193 mcast_dmac = ethernet_address_cast(h0->dst_address);
196 l2_stat_kind = STATS_IF_LAYER2_UCAST_INPUT_CNT;
197 if (PREDICT_FALSE (mcast_dmac)) {
198 u32 *dsthi = (u32 *) &h0->dst_address[0];
199 u32 *dstlo = (u32 *) &h0->dst_address[2];
201 // Disable bridge forwarding (flooding will execute instead if not xconnect)
202 feat_mask &= ~(L2INPUT_FEAT_FWD | L2INPUT_FEAT_UU_FLOOD);
203 if (ethertype != ETHERNET_TYPE_ARP) // Disable ARP-term for non-ARP packet
204 feat_mask &= ~(L2INPUT_FEAT_ARP_TERM);
206 // dest mac is multicast or broadcast
207 if ((*dstlo == 0xFFFFFFFF) && (*dsthi == 0xFFFFFFFF)) {
208 // dest mac == FF:FF:FF:FF:FF:FF
209 l2_stat_kind = STATS_IF_LAYER2_BCAST_INPUT_CNT;
212 l2_stat_kind = STATS_IF_LAYER2_MCAST_INPUT_CNT;
216 // TODO: take l2 stat
218 // Get config for the input interface
219 config = vec_elt_at_index(msm->configs, sw_if_index0);
221 // Save split horizon group, use 0 for BVI to make sure not dropped
222 vnet_buffer(b0)->l2.shg = bvi_flg ? 0 : config->shg;
224 if (config->xconnect) {
225 // Set the output interface
226 vnet_buffer(b0)->sw_if_index[VLIB_TX] = config->output_sw_if_index;
230 // Do bridge-domain processing
231 bd_index0 = config->bd_index;
232 // save BD ID for next feature graph nodes
233 vnet_buffer(b0)->l2.bd_index = bd_index0;
235 // Get config for the bridge domain interface
236 bd_config = vec_elt_at_index(msm->bd_configs, bd_index0);
238 // Process bridge domain feature enables.
239 // To perform learning/flooding/forwarding, the corresponding bit
240 // must be enabled in both the input interface config and in the
241 // bridge domain config. In the bd_bitmap, bits for features other
242 // than learning/flooding/forwarding should always be set.
243 feat_mask = feat_mask & bd_config->feature_bitmap;
246 // mask out features from bitmap using packet type and bd config
247 feature_bitmap = config->feature_bitmap & feat_mask;
249 // save for next feature graph nodes
250 vnet_buffer(b0)->l2.feature_bitmap = feature_bitmap;
252 // Determine the next node
253 *next0 = feat_bitmap_get_next_node_index(msm->feat_next_node_index,
259 l2input_node_fn (vlib_main_t * vm,
260 vlib_node_runtime_t * node,
261 vlib_frame_t * frame)
263 u32 n_left_from, * from, * to_next;
264 l2input_next_t next_index;
265 l2input_main_t * msm = &l2input_main;
266 vlib_node_t *n = vlib_get_node (vm, l2input_node.index);
267 u32 node_counter_base_index = n->error_heap_index;
268 vlib_error_main_t * em = &vm->error_main;
269 u32 cpu_index = os_get_cpu_number();
271 from = vlib_frame_vector_args (frame);
272 n_left_from = frame->n_vectors; /* number of packets to process */
273 next_index = node->cached_next_index;
275 while (n_left_from > 0)
279 /* get space to enqueue frame to graph node "next_index" */
280 vlib_get_next_frame (vm, node, next_index,
281 to_next, n_left_to_next);
283 while (n_left_from >= 6 && n_left_to_next >= 2)
286 vlib_buffer_t * b0, * b1;
288 u32 sw_if_index0, sw_if_index1;
290 /* Prefetch next iteration. */
292 vlib_buffer_t * p2, * p3, * p4 , * p5;
293 u32 sw_if_index2, sw_if_index3;
295 p2 = vlib_get_buffer (vm, from[2]);
296 p3 = vlib_get_buffer (vm, from[3]);
297 p4 = vlib_get_buffer (vm, from[4]);
298 p5 = vlib_get_buffer (vm, from[5]);
300 // Prefetch the buffer header and packet for the N+2 loop iteration
301 vlib_prefetch_buffer_header (p4, LOAD);
302 vlib_prefetch_buffer_header (p5, LOAD);
304 CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE);
305 CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE);
307 // Prefetch the input config for the N+1 loop iteration
308 // This depends on the buffer header above
309 sw_if_index2 = vnet_buffer(p2)->sw_if_index[VLIB_RX];
310 sw_if_index3 = vnet_buffer(p3)->sw_if_index[VLIB_RX];
311 CLIB_PREFETCH (&msm->configs[sw_if_index2], CLIB_CACHE_LINE_BYTES, LOAD);
312 CLIB_PREFETCH (&msm->configs[sw_if_index3], CLIB_CACHE_LINE_BYTES, LOAD);
314 // Don't bother prefetching the bridge-domain config (which
315 // depends on the input config above). Only a small number of
316 // bridge domains are expected. Plus the structure is small
317 // and several fit in a cache line.
320 /* speculatively enqueue b0 and b1 to the current next frame */
321 /* bi is "buffer index", b is pointer to the buffer */
322 to_next[0] = bi0 = from[0];
323 to_next[1] = bi1 = from[1];
329 b0 = vlib_get_buffer (vm, bi0);
330 b1 = vlib_get_buffer (vm, bi1);
332 if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE))) {
333 /* RX interface handles */
334 sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
335 sw_if_index1 = vnet_buffer(b1)->sw_if_index[VLIB_RX];
337 if (b0->flags & VLIB_BUFFER_IS_TRACED) {
338 ethernet_header_t * h0 = vlib_buffer_get_current (b0);
340 vlib_add_trace (vm, node, b0, sizeof (*t));
341 t->sw_if_index = sw_if_index0;
342 memcpy(t->src, h0->src_address, 6);
343 memcpy(t->dst, h0->dst_address, 6);
345 if (b1->flags & VLIB_BUFFER_IS_TRACED) {
346 ethernet_header_t * h1 = vlib_buffer_get_current (b1);
348 vlib_add_trace (vm, node, b1, sizeof (*t));
349 t->sw_if_index = sw_if_index1;
350 memcpy(t->src, h1->src_address, 6);
351 memcpy(t->dst, h1->dst_address, 6);
355 em->counters[node_counter_base_index + L2INPUT_ERROR_L2INPUT] += 2;
357 classify_and_dispatch (vm,
364 classify_and_dispatch (vm,
371 /* verify speculative enqueues, maybe switch current next frame */
372 /* if next0==next1==next_index then nothing special needs to be done */
373 vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
374 to_next, n_left_to_next,
375 bi0, bi1, next0, next1);
378 while (n_left_from > 0 && n_left_to_next > 0)
385 /* speculatively enqueue b0 to the current next frame */
393 b0 = vlib_get_buffer (vm, bi0);
395 if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
396 && (b0->flags & VLIB_BUFFER_IS_TRACED))) {
397 ethernet_header_t * h0 = vlib_buffer_get_current (b0);
399 vlib_add_trace (vm, node, b0, sizeof (*t));
400 sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
401 t->sw_if_index = sw_if_index0;
402 memcpy(t->src, h0->src_address, 6);
403 memcpy(t->dst, h0->dst_address, 6);
406 em->counters[node_counter_base_index + L2INPUT_ERROR_L2INPUT] += 1;
408 classify_and_dispatch (vm,
415 /* verify speculative enqueue, maybe switch current next frame */
416 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
417 to_next, n_left_to_next,
421 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
424 return frame->n_vectors;
428 VLIB_REGISTER_NODE (l2input_node,static) = {
429 .function = l2input_node_fn,
431 .vector_size = sizeof (u32),
432 .format_trace = format_l2input_trace,
433 .format_buffer = format_ethernet_header_with_length,
434 .type = VLIB_NODE_TYPE_INTERNAL,
436 .n_errors = ARRAY_LEN(l2input_error_strings),
437 .error_strings = l2input_error_strings,
439 .n_next_nodes = L2INPUT_N_NEXT,
441 /* edit / add dispositions here */
443 [L2INPUT_NEXT_LEARN] = "l2-learn",
444 [L2INPUT_NEXT_FWD] = "l2-fwd",
445 [L2INPUT_NEXT_DROP] = "error-drop",
449 clib_error_t *l2input_init (vlib_main_t *vm)
451 l2input_main_t * mp = &l2input_main;
454 mp->vnet_main = vnet_get_main();
456 // Get packets RX'd from L2 interfaces
457 ethernet_register_l2_input (vm, l2input_node.index);
459 // Create the config vector
460 vec_validate(mp->configs, 100);
461 // create 100 sw interface entries and zero them
463 // Initialize the feature next-node indexes
464 feat_bitmap_init_next_nodes(vm,
467 l2input_get_feat_names(),
468 mp->feat_next_node_index);
473 VLIB_INIT_FUNCTION (l2input_init);
476 // Get a pointer to the config for the given interface
477 l2_input_config_t * l2input_intf_config (u32 sw_if_index)
479 l2input_main_t * mp = &l2input_main;
481 vec_validate(mp->configs, sw_if_index);
482 return vec_elt_at_index(mp->configs, sw_if_index);
485 // Enable (or disable) the feature in the bitmap for the given interface
486 u32 l2input_intf_bitmap_enable (u32 sw_if_index,
490 l2input_main_t * mp = &l2input_main;
491 l2_input_config_t *config;
493 vec_validate(mp->configs, sw_if_index);
494 config = vec_elt_at_index(mp->configs, sw_if_index);
497 config->feature_bitmap |= feature_bitmap;
499 config->feature_bitmap &= ~feature_bitmap;
502 return config->feature_bitmap;
507 // Set the subinterface to run in l2 or l3 mode.
508 // for L3 mode, just the sw_if_index is specified
509 // for bridged mode, the bd id and bvi flag are also specified
510 // for xconnect mode, the peer sw_if_index is also specified
511 // Return 0 if ok, or non-0 if there was an error
513 u32 set_int_l2_mode (vlib_main_t * vm,
514 vnet_main_t * vnet_main,
517 u32 bd_index, // for bridged interface
518 u32 bvi, // the bridged interface is the BVI
519 u32 shg, // the bridged interface's split horizon group
520 u32 xc_sw_if_index) // peer interface for xconnect
522 l2input_main_t * mp = &l2input_main;
523 vnet_main_t * vnm = vnet_get_main();
524 vnet_hw_interface_t * hi;
525 l2_output_config_t * out_config;
526 l2_input_config_t * config;
527 l2_bridge_domain_t * bd_config;
528 l2_flood_member_t member;
530 i32 l2_if_adjust = 0;
532 hi = vnet_get_sup_hw_interface (vnet_main, sw_if_index);
534 vec_validate(mp->configs, sw_if_index);
535 config = vec_elt_at_index(mp->configs, sw_if_index);
537 if (config->bridge) {
538 // Interface is already in bridge mode. Undo the existing config.
539 bd_config = vec_elt_at_index(mp->bd_configs, config->bd_index);
541 // remove interface from flood vector
542 bd_remove_member (bd_config, sw_if_index);
544 // undo any BVI-related config
545 if (bd_config->bvi_sw_if_index == sw_if_index) {
546 bd_config->bvi_sw_if_index = ~0;
549 // restore output node
550 hi->output_node_index = bd_config->saved_bvi_output_node_index;
552 // delete the l2fib entry for the bvi interface
553 mac = *((u64 *)hi->hw_address);
554 l2fib_del_entry (mac, config->bd_index);
557 } else if (config->xconnect) {
561 // Initialize the l2-input configuration for the interface
562 if (mode == MODE_L3) {
563 config->xconnect = 0;
566 config->bd_index = 0;
567 config->feature_bitmap = L2INPUT_FEAT_DROP;
568 } else if (mode == MODE_L2_CLASSIFY) {
569 config->xconnect = 1;
571 config->output_sw_if_index = xc_sw_if_index;
573 // Make sure last-chance drop is configured
574 config->feature_bitmap |= L2INPUT_FEAT_DROP | L2INPUT_FEAT_CLASSIFY;
576 // Make sure bridging features are disabled
577 config->feature_bitmap &=
578 ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD);
579 shg = 0; // not used in xconnect
581 // Insure all packets go to ethernet-input
582 ethernet_set_rx_redirect (vnet_main, hi, 1);
585 if (mode == MODE_L2_BRIDGE) {
587 * Remove a check that the interface must be an Ethernet.
588 * Specifically so we can bridge to L3 tunnel interfaces.
590 * if (hi->hw_class_index != ethernet_hw_interface_class.index)
594 return MODE_ERROR_ETH; // non-ethernet
596 config->xconnect = 0;
598 config->bd_index = bd_index;
600 // Enable forwarding, flooding, learning and ARP termination by default
601 // (note that ARP term is disabled on BD feature bitmap by default)
602 config->feature_bitmap |= L2INPUT_FEAT_FWD | L2INPUT_FEAT_UU_FLOOD |
603 L2INPUT_FEAT_FLOOD | L2INPUT_FEAT_LEARN | L2INPUT_FEAT_ARP_TERM;
605 // Make sure last-chance drop is configured
606 config->feature_bitmap |= L2INPUT_FEAT_DROP;
608 // Make sure xconnect is disabled
609 config->feature_bitmap &= ~L2INPUT_FEAT_XCONNECT;
611 // Set up bridge domain
612 vec_validate(mp->bd_configs, bd_index);
613 bd_config = vec_elt_at_index(mp->bd_configs, bd_index);
614 bd_validate (bd_config);
616 // TODO: think: add l2fib entry even for non-bvi interface?
618 // Do BVI interface initializations
620 // insure BD has no bvi interface (or replace that one with this??)
621 if (bd_config->bvi_sw_if_index != ~0) {
622 return MODE_ERROR_BVI_DEF; // bd already has a bvi interface
624 bd_config->bvi_sw_if_index = sw_if_index;
627 // make BVI outputs go to l2-input
628 bd_config->saved_bvi_output_node_index = hi->output_node_index;
629 hi->output_node_index = l2input_node.index;
631 // create the l2fib entry for the bvi interface
632 mac = *((u64 *)hi->hw_address);
633 l2fib_add_entry (mac, bd_index, sw_if_index, 1, 0, 1); // static + bvi
635 // Disable learning by default. no use since l2fib entry is static.
636 config->feature_bitmap &= ~L2INPUT_FEAT_LEARN;
638 // Add BVI to arp_input_next_index_by_hw_if_index table so arp-input
639 // node can send out ARP response via BVI to BD
640 ethernet_arp_hw_interface_link_up_down(vnet_main, hi->hw_if_index, 0);
644 // Add interface to bridge-domain flood vector
645 member.sw_if_index = sw_if_index;
646 member.flags = bvi ? L2_FLOOD_MEMBER_BVI : L2_FLOOD_MEMBER_NORMAL;
648 bd_add_member (bd_config, &member);
651 config->xconnect = 1;
653 config->output_sw_if_index = xc_sw_if_index;
655 // Make sure last-chance drop is configured
656 config->feature_bitmap |= L2INPUT_FEAT_DROP;
658 // Make sure bridging features are disabled
659 config->feature_bitmap &= ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD);
661 config->feature_bitmap |= L2INPUT_FEAT_XCONNECT;
662 shg = 0; // not used in xconnect
665 // set up split-horizon group
667 out_config = l2output_intf_config (sw_if_index);
668 out_config->shg = shg;
670 // Test: remove this when non-IP features can be configured.
671 // Enable a non-IP feature to test IP feature masking
672 // config->feature_bitmap |= L2INPUT_FEAT_CTRL_PKT;
677 // Adjust count of L2 interfaces
678 hi->l2_if_count += l2_if_adjust;
680 if (hi->hw_class_index == ethernet_hw_interface_class.index) {
681 if ((hi->l2_if_count == 1) && (l2_if_adjust == 1)) {
682 // Just added first L2 interface on this port
684 // Set promiscuous mode on the l2 interface
685 ethernet_set_flags (vnet_main, hi->hw_if_index,
686 ETHERNET_INTERFACE_FLAG_ACCEPT_ALL);
688 // Insure all packets go to ethernet-input
689 ethernet_set_rx_redirect (vnet_main, hi, 1);
691 } else if ((hi->l2_if_count == 0) && (l2_if_adjust == -1)) {
692 // Just removed only L2 subinterface on this port
694 // Disable promiscuous mode on the l2 interface
695 ethernet_set_flags (vnet_main, hi->hw_if_index, 0);
697 // Allow ip packets to go directly to ip4-input etc
698 ethernet_set_rx_redirect (vnet_main, hi, 0);
702 // Set up the L2/L3 flag in the interface parsing tables
703 ethernet_sw_interface_set_l2_mode(vnm, sw_if_index, (mode!=MODE_L3));
708 // set subinterface in bridging mode with a bridge-domain ID
709 // The CLI format is:
710 // set interface l2 bridge <interface> <bd> [bvi] [split-horizon-group]
711 static clib_error_t *
712 int_l2_bridge (vlib_main_t * vm,
713 unformat_input_t * input,
714 vlib_cli_command_t * cmd)
716 vnet_main_t * vnm = vnet_get_main();
717 clib_error_t * error = 0;
724 if (! unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
726 error = clib_error_return (0, "unknown interface `%U'",
727 format_unformat_error, input);
731 if (!unformat (input, "%d", &bd_id)) {
732 error = clib_error_return (0, "expected bridge domain ID `%U'",
733 format_unformat_error, input);
737 bd_index = bd_find_or_add_bd_index (&bd_main, bd_id);
740 bvi = unformat (input, "bvi");
742 // optional split horizon group
744 (void) unformat (input, "%d", &shg);
746 // set the interface mode
747 if ((rc = set_int_l2_mode(vm, vnm, MODE_L2_BRIDGE, sw_if_index, bd_index, bvi, shg, 0))) {
748 if (rc == MODE_ERROR_ETH) {
749 error = clib_error_return (0, "bridged interface must be ethernet",
750 format_unformat_error, input);
751 } else if (rc == MODE_ERROR_BVI_DEF) {
752 error = clib_error_return (0, "bridge-domain already has a bvi interface",
753 format_unformat_error, input);
755 error = clib_error_return (0, "invalid configuration for interface",
756 format_unformat_error, input);
765 VLIB_CLI_COMMAND (int_l2_bridge_cli, static) = {
766 .path = "set interface l2 bridge",
767 .short_help = "set interface to L2 bridging mode in <bridge-domain ID> [bvi] [shg]",
768 .function = int_l2_bridge,
771 // set subinterface in xconnect mode with another interface
772 // The CLI format is:
773 // set interface l2 xconnect <interface> <peer interface>
774 static clib_error_t *
775 int_l2_xc (vlib_main_t * vm,
776 unformat_input_t * input,
777 vlib_cli_command_t * cmd)
779 vnet_main_t * vnm = vnet_get_main();
780 clib_error_t * error = 0;
784 if (! unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
786 error = clib_error_return (0, "unknown interface `%U'",
787 format_unformat_error, input);
791 if (! unformat_user (input, unformat_vnet_sw_interface, vnm, &xc_sw_if_index))
793 error = clib_error_return (0, "unknown peer interface `%U'",
794 format_unformat_error, input);
798 // set the interface mode
799 if (set_int_l2_mode(vm, vnm, MODE_L2_XC, sw_if_index, 0, 0, 0, xc_sw_if_index)) {
800 error = clib_error_return (0, "invalid configuration for interface",
801 format_unformat_error, input);
809 VLIB_CLI_COMMAND (int_l2_xc_cli, static) = {
810 .path = "set interface l2 xconnect",
811 .short_help = "set interface to L2 cross-connect mode with <peer interface>",
812 .function = int_l2_xc,
815 // set subinterface in L3 mode
816 // The CLI format is:
817 // set interface l3 <interface>
818 static clib_error_t *
819 int_l3 (vlib_main_t * vm,
820 unformat_input_t * input,
821 vlib_cli_command_t * cmd)
823 vnet_main_t * vnm = vnet_get_main();
824 clib_error_t * error = 0;
827 if (! unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
829 error = clib_error_return (0, "unknown interface `%U'",
830 format_unformat_error, input);
834 // set the interface mode
835 if (set_int_l2_mode(vm, vnm, MODE_L3, sw_if_index, 0, 0, 0, 0)) {
836 error = clib_error_return (0, "invalid configuration for interface",
837 format_unformat_error, input);
845 VLIB_CLI_COMMAND (int_l3_cli, static) = {
846 .path = "set interface l3",
847 .short_help = "set interface to L3 mode",
851 // The CLI format is:
852 // show mode [<if-name1> <if-name2> ...]
853 static clib_error_t *
854 show_int_mode (vlib_main_t * vm,
855 unformat_input_t * input,
856 vlib_cli_command_t * cmd)
858 vnet_main_t * vnm = vnet_get_main();
859 clib_error_t * error = 0;
862 vnet_interface_main_t * im = &vnm->interface_main;
863 vnet_sw_interface_t * si, * sis = 0;
864 l2input_main_t * mp = &l2input_main;
865 l2_input_config_t * config;
867 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
871 /* See if user wants to show specific interface */
872 if (unformat (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
874 si = pool_elt_at_index (im->sw_interfaces, sw_if_index);
875 vec_add1 (sis, si[0]);
879 error = clib_error_return (0, "unknown input `%U'",
880 format_unformat_error, input);
886 if (vec_len (sis) == 0) /* Get all interfaces */
888 /* Gather interfaces. */
889 sis = vec_new (vnet_sw_interface_t, pool_elts (im->sw_interfaces));
891 pool_foreach (si, im->sw_interfaces, ({ vec_add1 (sis, si[0]); }));
894 vec_foreach (si, sis)
896 vec_validate(mp->configs, si->sw_if_index);
897 config = vec_elt_at_index(mp->configs, si->sw_if_index);
898 if (config->bridge) {
901 bd_id = l2input_main.bd_configs[config->bd_index].bd_id;
903 args = format (0, "bd_id %d%s%d", bd_id,
904 config->bvi ? " bvi shg " : " shg ", config->shg);
905 } else if (config->xconnect) {
906 mode = "l2 xconnect";
907 args = format (0, "%U",
908 format_vnet_sw_if_index_name,
909 vnm, config->output_sw_if_index);
912 args = format (0, " ");
914 vlib_cli_output (vm, "%s %U %v\n",
916 format_vnet_sw_if_index_name,
917 vnm, si->sw_if_index,
928 VLIB_CLI_COMMAND (show_l2_mode, static) = {
930 .short_help = "show mode [<if-name1> <if-name2> ...]",
931 .function = show_int_mode,
934 #define foreach_l2_init_function \
935 _(feat_bitmap_drop_init) \
937 _(l2_classify_init) \
944 _(l2_efp_filter_init) \
952 clib_error_t *l2_init (vlib_main_t * vm)
954 clib_error_t * error;
957 if ((error = vlib_call_init_function (vm, a))) return error; } \
959 foreach_l2_init_function;
964 VLIB_INIT_FUNCTION (l2_init);