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,
46 l2input_get_feat_names (void)
48 return l2input_feat_names;
54 /* per-pkt trace data */
61 /* packet trace format function */
63 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 #define foreach_l2input_error \
79 _(L2INPUT, "L2 input packets") \
80 _(DROP, "L2 input drops")
84 #define _(sym,str) L2INPUT_ERROR_##sym,
90 static char *l2input_error_strings[] = {
91 #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, vlib_buffer_t * b0, u32 * next0)
112 * Load L2 input feature struct
113 * Load bridge domain struct
114 * Parse ethernet header to determine unicast/mcast/broadcast
116 * classify packet as IP/UDP/TCP, control, other
117 * mask feature bitmap
118 * go to first node in bitmap
119 * Later: optimize VTM
122 * 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;
140 #define get_u32(addr) ( *((u32 *)(addr)) )
141 #define get_u16(addr) ( *((u16 *)(addr)) )
142 #define STATS_IF_LAYER2_UCAST_INPUT_CNT 0
143 #define STATS_IF_LAYER2_MCAST_INPUT_CNT 1
144 #define STATS_IF_LAYER2_BCAST_INPUT_CNT 2
146 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
148 h0 = vlib_buffer_get_current (b0);
149 l3h0 = (u8 *) h0 + vnet_buffer (b0)->l2.l2_len;
152 * Determine L3 packet type. Only need to check the common types.
153 * Used to filter out features that don't apply to common packets.
155 ethertype = clib_net_to_host_u16 (get_u16 (l3h0 - 2));
156 if (ethertype == ETHERNET_TYPE_IP4)
158 protocol = ((ip4_header_t *) l3h0)->protocol;
159 if ((protocol == IP_PROTOCOL_UDP) || (protocol == IP_PROTOCOL_TCP))
161 feat_mask = IP_UDP_TCP_FEAT_MASK;
165 feat_mask = IP4_FEAT_MASK;
168 else if (ethertype == ETHERNET_TYPE_IP6)
170 protocol = ((ip6_header_t *) l3h0)->protocol;
171 /* Don't bother checking for extension headers for now */
172 if ((protocol == IP_PROTOCOL_UDP) || (protocol == IP_PROTOCOL_TCP))
174 feat_mask = IP_UDP_TCP_FEAT_MASK;
178 feat_mask = IP6_FEAT_MASK;
181 else if (ethertype == ETHERNET_TYPE_MPLS_UNICAST)
183 feat_mask = IP6_FEAT_MASK;
187 /* allow all features */
191 /* determine layer2 kind for stat and mask */
192 mcast_dmac = ethernet_address_cast (h0->dst_address);
195 l2_stat_kind = STATS_IF_LAYER2_UCAST_INPUT_CNT;
196 if (PREDICT_FALSE (mcast_dmac))
198 u32 *dsthi = (u32 *) & h0->dst_address[0];
199 u32 *dstlo = (u32 *) & h0->dst_address[2];
200 protocol = ((ip6_header_t *) l3h0)->protocol;
202 /* Disable bridge forwarding (flooding will execute instead if not xconnect) */
203 feat_mask &= ~(L2INPUT_FEAT_FWD | L2INPUT_FEAT_UU_FLOOD);
205 /* Disable ARP-term for non-ARP and non-ICMP6 packet */
206 if (ethertype != ETHERNET_TYPE_ARP &&
207 (ethertype != ETHERNET_TYPE_IP6 || protocol != IP_PROTOCOL_ICMP6))
208 feat_mask &= ~(L2INPUT_FEAT_ARP_TERM);
210 /* dest mac is multicast or broadcast */
211 if ((*dstlo == 0xFFFFFFFF) && (*dsthi == 0xFFFFFFFF))
213 /* dest mac == FF:FF:FF:FF:FF:FF */
214 l2_stat_kind = STATS_IF_LAYER2_BCAST_INPUT_CNT;
219 l2_stat_kind = STATS_IF_LAYER2_MCAST_INPUT_CNT;
223 /* TODO: take l2 stat */
225 /* Get config for the input interface */
226 config = vec_elt_at_index (msm->configs, sw_if_index0);
228 /* Save split horizon group */
229 vnet_buffer (b0)->l2.shg = config->shg;
231 if (config->xconnect)
233 /* Set the output interface */
234 vnet_buffer (b0)->sw_if_index[VLIB_TX] = config->output_sw_if_index;
241 * Check for from-BVI processing, TX is non-~0 if from BVI loopback
242 * Set SHG for BVI packets to 0 so it is not dropped for VXLAN tunnels
244 if (PREDICT_FALSE (vnet_buffer (b0)->sw_if_index[VLIB_TX] != ~0))
246 vnet_buffer (b0)->sw_if_index[VLIB_TX] = ~0;
247 vnet_buffer (b0)->l2.shg = 0;
250 /* Do bridge-domain processing */
251 bd_index0 = config->bd_index;
252 /* save BD ID for next feature graph nodes */
253 vnet_buffer (b0)->l2.bd_index = bd_index0;
255 /* Get config for the bridge domain interface */
256 bd_config = vec_elt_at_index (msm->bd_configs, bd_index0);
259 * Process bridge domain feature enables.
260 * To perform learning/flooding/forwarding, the corresponding bit
261 * must be enabled in both the input interface config and in the
262 * bridge domain config. In the bd_bitmap, bits for features other
263 * than learning/flooding/forwarding should always be set.
265 feat_mask = feat_mask & bd_config->feature_bitmap;
268 /* mask out features from bitmap using packet type and bd config */
269 feature_bitmap = config->feature_bitmap & feat_mask;
271 /* save for next feature graph nodes */
272 vnet_buffer (b0)->l2.feature_bitmap = feature_bitmap;
274 /* Determine the next node */
275 *next0 = feat_bitmap_get_next_node_index (msm->feat_next_node_index,
281 l2input_node_fn (vlib_main_t * vm,
282 vlib_node_runtime_t * node, vlib_frame_t * frame)
284 u32 n_left_from, *from, *to_next;
285 l2input_next_t next_index;
286 l2input_main_t *msm = &l2input_main;
287 vlib_node_t *n = vlib_get_node (vm, l2input_node.index);
288 u32 node_counter_base_index = n->error_heap_index;
289 vlib_error_main_t *em = &vm->error_main;
290 u32 cpu_index = os_get_cpu_number ();
292 from = vlib_frame_vector_args (frame);
293 n_left_from = frame->n_vectors; /* number of packets to process */
294 next_index = node->cached_next_index;
296 while (n_left_from > 0)
300 /* get space to enqueue frame to graph node "next_index" */
301 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
303 while (n_left_from >= 6 && n_left_to_next >= 2)
306 vlib_buffer_t *b0, *b1;
308 u32 sw_if_index0, sw_if_index1;
310 /* Prefetch next iteration. */
312 vlib_buffer_t *p2, *p3, *p4, *p5;
313 u32 sw_if_index2, sw_if_index3;
315 p2 = vlib_get_buffer (vm, from[2]);
316 p3 = vlib_get_buffer (vm, from[3]);
317 p4 = vlib_get_buffer (vm, from[4]);
318 p5 = vlib_get_buffer (vm, from[5]);
320 /* Prefetch the buffer header and packet for the N+2 loop iteration */
321 vlib_prefetch_buffer_header (p4, LOAD);
322 vlib_prefetch_buffer_header (p5, LOAD);
324 CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE);
325 CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE);
328 * Prefetch the input config for the N+1 loop iteration
329 * This depends on the buffer header above
331 sw_if_index2 = vnet_buffer (p2)->sw_if_index[VLIB_RX];
332 sw_if_index3 = vnet_buffer (p3)->sw_if_index[VLIB_RX];
333 CLIB_PREFETCH (&msm->configs[sw_if_index2], CLIB_CACHE_LINE_BYTES,
335 CLIB_PREFETCH (&msm->configs[sw_if_index3], CLIB_CACHE_LINE_BYTES,
339 * Don't bother prefetching the bridge-domain config (which
340 * depends on the input config above). Only a small number of
341 * bridge domains are expected. Plus the structure is small
342 * and several fit in a cache line.
346 /* speculatively enqueue b0 and b1 to the current next frame */
347 /* bi is "buffer index", b is pointer to the buffer */
348 to_next[0] = bi0 = from[0];
349 to_next[1] = bi1 = from[1];
355 b0 = vlib_get_buffer (vm, bi0);
356 b1 = vlib_get_buffer (vm, bi1);
358 if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
360 /* RX interface handles */
361 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
362 sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
364 if (b0->flags & VLIB_BUFFER_IS_TRACED)
366 ethernet_header_t *h0 = vlib_buffer_get_current (b0);
368 vlib_add_trace (vm, node, b0, sizeof (*t));
369 t->sw_if_index = sw_if_index0;
370 clib_memcpy (t->src, h0->src_address, 6);
371 clib_memcpy (t->dst, h0->dst_address, 6);
373 if (b1->flags & VLIB_BUFFER_IS_TRACED)
375 ethernet_header_t *h1 = vlib_buffer_get_current (b1);
377 vlib_add_trace (vm, node, b1, sizeof (*t));
378 t->sw_if_index = sw_if_index1;
379 clib_memcpy (t->src, h1->src_address, 6);
380 clib_memcpy (t->dst, h1->dst_address, 6);
384 em->counters[node_counter_base_index + L2INPUT_ERROR_L2INPUT] += 2;
386 classify_and_dispatch (vm, node, cpu_index, msm, b0, &next0);
388 classify_and_dispatch (vm, node, cpu_index, msm, b1, &next1);
390 /* verify speculative enqueues, maybe switch current next frame */
391 /* if next0==next1==next_index then nothing special needs to be done */
392 vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
393 to_next, n_left_to_next,
394 bi0, bi1, next0, next1);
397 while (n_left_from > 0 && n_left_to_next > 0)
404 /* speculatively enqueue b0 to the current next frame */
412 b0 = vlib_get_buffer (vm, bi0);
414 if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
415 && (b0->flags & VLIB_BUFFER_IS_TRACED)))
417 ethernet_header_t *h0 = vlib_buffer_get_current (b0);
418 l2input_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t));
419 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
420 t->sw_if_index = sw_if_index0;
421 clib_memcpy (t->src, h0->src_address, 6);
422 clib_memcpy (t->dst, h0->dst_address, 6);
425 em->counters[node_counter_base_index + L2INPUT_ERROR_L2INPUT] += 1;
427 classify_and_dispatch (vm, node, cpu_index, msm, b0, &next0);
429 /* verify speculative enqueue, maybe switch current next frame */
430 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
431 to_next, n_left_to_next,
435 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
438 return frame->n_vectors;
443 VLIB_REGISTER_NODE (l2input_node) = {
444 .function = l2input_node_fn,
446 .vector_size = sizeof (u32),
447 .format_trace = format_l2input_trace,
448 .format_buffer = format_ethernet_header_with_length,
449 .type = VLIB_NODE_TYPE_INTERNAL,
451 .n_errors = ARRAY_LEN(l2input_error_strings),
452 .error_strings = l2input_error_strings,
454 .n_next_nodes = L2INPUT_N_NEXT,
456 /* edit / add dispositions here */
458 [L2INPUT_NEXT_LEARN] = "l2-learn",
459 [L2INPUT_NEXT_FWD] = "l2-fwd",
460 [L2INPUT_NEXT_DROP] = "error-drop",
465 VLIB_NODE_FUNCTION_MULTIARCH (l2input_node, l2input_node_fn)
466 clib_error_t *l2input_init (vlib_main_t * vm)
468 l2input_main_t *mp = &l2input_main;
471 mp->vnet_main = vnet_get_main ();
473 /* Get packets RX'd from L2 interfaces */
474 ethernet_register_l2_input (vm, l2input_node.index);
476 /* Create the config vector */
477 vec_validate (mp->configs, 100);
478 /* create 100 sw interface entries and zero them */
480 /* Initialize the feature next-node indexes */
481 feat_bitmap_init_next_nodes (vm,
484 l2input_get_feat_names (),
485 mp->feat_next_node_index);
490 VLIB_INIT_FUNCTION (l2input_init);
493 /** Get a pointer to the config for the given interface. */
495 l2input_intf_config (u32 sw_if_index)
497 l2input_main_t *mp = &l2input_main;
499 vec_validate (mp->configs, sw_if_index);
500 return vec_elt_at_index (mp->configs, sw_if_index);
503 /** Enable (or disable) the feature in the bitmap for the given interface. */
505 l2input_intf_bitmap_enable (u32 sw_if_index, u32 feature_bitmap, u32 enable)
507 l2input_main_t *mp = &l2input_main;
508 l2_input_config_t *config;
510 vec_validate (mp->configs, sw_if_index);
511 config = vec_elt_at_index (mp->configs, sw_if_index);
515 config->feature_bitmap |= feature_bitmap;
519 config->feature_bitmap &= ~feature_bitmap;
522 return config->feature_bitmap;
526 l2input_set_bridge_features (u32 bd_index, u32 feat_mask, u32 feat_value)
528 l2_bridge_domain_t *bd_config;
529 vec_validate (l2input_main.bd_configs, bd_index);
530 bd_config = vec_elt_at_index (l2input_main.bd_configs, bd_index);
531 bd_validate (bd_config);
532 bd_config->feature_bitmap =
533 (bd_config->feature_bitmap & ~feat_mask) | feat_value;
534 return bd_config->feature_bitmap;
538 * Set the subinterface to run in l2 or l3 mode.
539 * For L3 mode, just the sw_if_index is specified.
540 * For bridged mode, the bd id and bvi flag are also specified.
541 * For xconnect mode, the peer sw_if_index is also specified.
542 * Return 0 if ok, or non-0 if there was an error.
546 set_int_l2_mode (vlib_main_t * vm, vnet_main_t * vnet_main, u32 mode, u32 sw_if_index, u32 bd_index, /* for bridged interface */
547 u32 bvi, /* the bridged interface is the BVI */
548 u32 shg, /* the bridged interface's split horizon group */
549 u32 xc_sw_if_index) /* peer interface for xconnect */
551 l2input_main_t *mp = &l2input_main;
552 l2output_main_t *l2om = &l2output_main;
553 vnet_main_t *vnm = vnet_get_main ();
554 vnet_hw_interface_t *hi;
555 l2_output_config_t *out_config;
556 l2_input_config_t *config;
557 l2_bridge_domain_t *bd_config;
558 l2_flood_member_t member;
560 i32 l2_if_adjust = 0;
563 hi = vnet_get_sup_hw_interface (vnet_main, sw_if_index);
565 vec_validate (mp->configs, sw_if_index);
566 config = vec_elt_at_index (mp->configs, sw_if_index);
570 /* Interface is already in bridge mode. Undo the existing config. */
571 bd_config = vec_elt_at_index (mp->bd_configs, config->bd_index);
573 /* remove interface from flood vector */
574 bd_remove_member (bd_config, sw_if_index);
576 /* undo any BVI-related config */
577 if (bd_config->bvi_sw_if_index == sw_if_index)
579 bd_config->bvi_sw_if_index = ~0;
582 /* delete the l2fib entry for the bvi interface */
583 mac = *((u64 *) hi->hw_address);
584 l2fib_del_entry (mac, config->bd_index);
586 /* Make loop output node send packet back to ethernet-input node */
588 vlib_node_add_named_next_with_slot (vm, hi->tx_node_index,
590 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
591 ASSERT (slot == VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
595 else if (config->xconnect)
600 /* Initialize the l2-input configuration for the interface */
603 config->xconnect = 0;
606 config->bd_index = 0;
607 config->feature_bitmap = L2INPUT_FEAT_DROP;
609 * Directs the l2 output path to work out the interface
610 * output next-arc itself. Needed when recycling a sw_if_index.
612 vec_validate_init_empty (l2om->next_nodes.output_node_index_vec,
614 l2om->next_nodes.output_node_index_vec[sw_if_index] = ~0;
617 else if (mode == MODE_L2_CLASSIFY)
619 config->xconnect = 1;
621 config->output_sw_if_index = xc_sw_if_index;
623 /* Make sure last-chance drop is configured */
624 config->feature_bitmap |=
625 L2INPUT_FEAT_DROP | L2INPUT_FEAT_INPUT_CLASSIFY;
627 /* Make sure bridging features are disabled */
628 config->feature_bitmap &=
629 ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD);
630 shg = 0; /* not used in xconnect */
632 /* Insure all packets go to ethernet-input */
633 ethernet_set_rx_redirect (vnet_main, hi, 1);
638 if (mode == MODE_L2_BRIDGE)
641 * Remove a check that the interface must be an Ethernet.
642 * Specifically so we can bridge to L3 tunnel interfaces.
644 * if (hi->hw_class_index != ethernet_hw_interface_class.index)
648 return MODE_ERROR_ETH; /* non-ethernet */
650 config->xconnect = 0;
652 config->bd_index = bd_index;
655 * Enable forwarding, flooding, learning and ARP termination by default
656 * (note that ARP term is disabled on BD feature bitmap by default)
658 config->feature_bitmap |= L2INPUT_FEAT_FWD | L2INPUT_FEAT_UU_FLOOD |
659 L2INPUT_FEAT_FLOOD | L2INPUT_FEAT_LEARN | L2INPUT_FEAT_ARP_TERM;
661 /* Make sure last-chance drop is configured */
662 config->feature_bitmap |= L2INPUT_FEAT_DROP;
664 /* Make sure xconnect is disabled */
665 config->feature_bitmap &= ~L2INPUT_FEAT_XCONNECT;
667 /* Set up bridge domain */
668 vec_validate (mp->bd_configs, bd_index);
669 bd_config = vec_elt_at_index (mp->bd_configs, bd_index);
670 bd_validate (bd_config);
672 /* TODO: think: add l2fib entry even for non-bvi interface? */
674 /* Do BVI interface initializations */
677 /* ensure BD has no bvi interface (or replace that one with this??) */
678 if (bd_config->bvi_sw_if_index != ~0)
680 return MODE_ERROR_BVI_DEF; /* bd already has a bvi interface */
682 bd_config->bvi_sw_if_index = sw_if_index;
685 /* create the l2fib entry for the bvi interface */
686 mac = *((u64 *) hi->hw_address);
687 l2fib_add_entry (mac, bd_index, sw_if_index, 1, 0, 1); /* static + bvi */
689 /* Disable learning by default. no use since l2fib entry is static. */
690 config->feature_bitmap &= ~L2INPUT_FEAT_LEARN;
692 /* Make loop output node send packet to l2-input node */
694 vlib_node_add_named_next_with_slot (vm, hi->tx_node_index,
696 VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
697 ASSERT (slot == VNET_SIMULATED_ETHERNET_TX_NEXT_ETHERNET_INPUT);
700 /* Add interface to bridge-domain flood vector */
701 member.sw_if_index = sw_if_index;
702 member.flags = bvi ? L2_FLOOD_MEMBER_BVI : L2_FLOOD_MEMBER_NORMAL;
704 bd_add_member (bd_config, &member);
709 config->xconnect = 1;
711 config->output_sw_if_index = xc_sw_if_index;
713 /* Make sure last-chance drop is configured */
714 config->feature_bitmap |= L2INPUT_FEAT_DROP;
716 /* Make sure bridging features are disabled */
717 config->feature_bitmap &=
718 ~(L2INPUT_FEAT_LEARN | L2INPUT_FEAT_FWD | L2INPUT_FEAT_FLOOD);
720 config->feature_bitmap |= L2INPUT_FEAT_XCONNECT;
721 shg = 0; /* not used in xconnect */
724 /* set up split-horizon group */
726 out_config = l2output_intf_config (sw_if_index);
727 out_config->shg = shg;
730 * Test: remove this when non-IP features can be configured.
731 * Enable a non-IP feature to test IP feature masking
732 * config->feature_bitmap |= L2INPUT_FEAT_CTRL_PKT;
738 /* Adjust count of L2 interfaces */
739 hi->l2_if_count += l2_if_adjust;
741 if (hi->hw_class_index == ethernet_hw_interface_class.index)
743 if ((hi->l2_if_count == 1) && (l2_if_adjust == 1))
745 /* Just added first L2 interface on this port */
747 /* Set promiscuous mode on the l2 interface */
748 ethernet_set_flags (vnet_main, hi->hw_if_index,
749 ETHERNET_INTERFACE_FLAG_ACCEPT_ALL);
751 /* ensure all packets go to ethernet-input */
752 ethernet_set_rx_redirect (vnet_main, hi, 1);
755 else if ((hi->l2_if_count == 0) && (l2_if_adjust == -1))
757 /* Just removed only L2 subinterface on this port */
759 /* Disable promiscuous mode on the l2 interface */
760 ethernet_set_flags (vnet_main, hi->hw_if_index, 0);
762 /* Allow ip packets to go directly to ip4-input etc */
763 ethernet_set_rx_redirect (vnet_main, hi, 0);
767 /* Set up the L2/L3 flag in the interface parsing tables */
768 ethernet_sw_interface_set_l2_mode (vnm, sw_if_index, (mode != MODE_L3));
774 * Set subinterface in bridging mode with a bridge-domain ID.
776 * set interface l2 bridge <interface> <bd> [bvi] [split-horizon-group]
778 static clib_error_t *
779 int_l2_bridge (vlib_main_t * vm,
780 unformat_input_t * input, vlib_cli_command_t * cmd)
782 vnet_main_t *vnm = vnet_get_main ();
783 clib_error_t *error = 0;
790 if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
792 error = clib_error_return (0, "unknown interface `%U'",
793 format_unformat_error, input);
797 if (!unformat (input, "%d", &bd_id))
799 error = clib_error_return (0, "expected bridge domain ID `%U'",
800 format_unformat_error, input);
804 bd_index = bd_find_or_add_bd_index (&bd_main, bd_id);
807 bvi = unformat (input, "bvi");
809 /* optional split horizon group */
811 (void) unformat (input, "%d", &shg);
813 /* set the interface mode */
815 set_int_l2_mode (vm, vnm, MODE_L2_BRIDGE, sw_if_index, bd_index, bvi,
818 if (rc == MODE_ERROR_ETH)
820 error = clib_error_return (0, "bridged interface must be ethernet",
821 format_unformat_error, input);
823 else if (rc == MODE_ERROR_BVI_DEF)
826 clib_error_return (0, "bridge-domain already has a bvi interface",
827 format_unformat_error, input);
831 error = clib_error_return (0, "invalid configuration for interface",
832 format_unformat_error, input);
842 VLIB_CLI_COMMAND (int_l2_bridge_cli, static) = {
843 .path = "set interface l2 bridge",
844 .short_help = "set interface to L2 bridging mode in <bridge-domain ID> [bvi] [shg]",
845 .function = int_l2_bridge,
850 * Set subinterface in xconnect mode with another interface.
852 * set interface l2 xconnect <interface> <peer interface>
854 static clib_error_t *
855 int_l2_xc (vlib_main_t * vm,
856 unformat_input_t * input, vlib_cli_command_t * cmd)
858 vnet_main_t *vnm = vnet_get_main ();
859 clib_error_t *error = 0;
863 if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
865 error = clib_error_return (0, "unknown interface `%U'",
866 format_unformat_error, input);
871 (input, unformat_vnet_sw_interface, vnm, &xc_sw_if_index))
873 error = clib_error_return (0, "unknown peer interface `%U'",
874 format_unformat_error, input);
878 /* set the interface mode */
880 (vm, vnm, MODE_L2_XC, sw_if_index, 0, 0, 0, xc_sw_if_index))
882 error = clib_error_return (0, "invalid configuration for interface",
883 format_unformat_error, input);
892 VLIB_CLI_COMMAND (int_l2_xc_cli, static) = {
893 .path = "set interface l2 xconnect",
894 .short_help = "set interface to L2 cross-connect mode with <peer interface>",
895 .function = int_l2_xc,
900 * Set subinterface in L3 mode.
902 * set interface l3 <interface>
904 static clib_error_t *
905 int_l3 (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd)
907 vnet_main_t *vnm = vnet_get_main ();
908 clib_error_t *error = 0;
911 if (!unformat_user (input, unformat_vnet_sw_interface, vnm, &sw_if_index))
913 error = clib_error_return (0, "unknown interface `%U'",
914 format_unformat_error, input);
918 /* set the interface mode */
919 if (set_int_l2_mode (vm, vnm, MODE_L3, sw_if_index, 0, 0, 0, 0))
921 error = clib_error_return (0, "invalid configuration for interface",
922 format_unformat_error, input);
931 VLIB_CLI_COMMAND (int_l3_cli, static) = {
932 .path = "set interface l3",
933 .short_help = "set interface to L3 mode",
939 * Show interface mode.
941 * show mode [<if-name1> <if-name2> ...]
943 static clib_error_t *
944 show_int_mode (vlib_main_t * vm,
945 unformat_input_t * input, vlib_cli_command_t * cmd)
947 vnet_main_t *vnm = vnet_get_main ();
948 clib_error_t *error = 0;
951 vnet_interface_main_t *im = &vnm->interface_main;
952 vnet_sw_interface_t *si, *sis = 0;
953 l2input_main_t *mp = &l2input_main;
954 l2_input_config_t *config;
956 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
960 /* See if user wants to show specific interface */
962 (input, "%U", unformat_vnet_sw_interface, vnm, &sw_if_index))
964 si = pool_elt_at_index (im->sw_interfaces, sw_if_index);
965 vec_add1 (sis, si[0]);
969 error = clib_error_return (0, "unknown input `%U'",
970 format_unformat_error, input);
976 if (vec_len (sis) == 0) /* Get all interfaces */
978 /* Gather interfaces. */
979 sis = vec_new (vnet_sw_interface_t, pool_elts (im->sw_interfaces));
982 pool_foreach (si, im->sw_interfaces, ({ vec_add1 (sis, si[0]); }));
986 vec_foreach (si, sis)
988 vec_validate (mp->configs, si->sw_if_index);
989 config = vec_elt_at_index (mp->configs, si->sw_if_index);
994 bd_id = l2input_main.bd_configs[config->bd_index].bd_id;
996 args = format (0, "bd_id %d%s%d", bd_id,
997 config->bvi ? " bvi shg " : " shg ", config->shg);
999 else if (config->xconnect)
1001 mode = "l2 xconnect";
1002 args = format (0, "%U",
1003 format_vnet_sw_if_index_name,
1004 vnm, config->output_sw_if_index);
1009 args = format (0, " ");
1011 vlib_cli_output (vm, "%s %U %v\n",
1013 format_vnet_sw_if_index_name,
1014 vnm, si->sw_if_index, args);
1025 VLIB_CLI_COMMAND (show_l2_mode, static) = {
1026 .path = "show mode",
1027 .short_help = "show mode [<if-name1> <if-name2> ...]",
1028 .function = show_int_mode,
1032 #define foreach_l2_init_function \
1033 _(feat_bitmap_drop_init) \
1035 _(l2_input_classify_init) \
1042 _(l2_efp_filter_init) \
1051 l2_init (vlib_main_t * vm)
1053 clib_error_t *error;
1056 if ((error = vlib_call_init_function (vm, a))) return error; } \
1058 foreach_l2_init_function;
1063 VLIB_INIT_FUNCTION (l2_init);
1066 * fd.io coding-style-patch-verification: ON
1069 * eval: (c-set-style "gnu")