1 #include <vppinfra/types.h>
2 #include <vlibmemory/api.h>
4 #include <vlib/buffer.h>
5 #include <vnet/ip/format.h>
6 #include <vnet/ethernet/packet.h>
7 #include <vnet/ip/udp_packet.h>
8 #include <vnet/ip/lookup.h>
9 #include <vnet/ip/icmp46_packet.h>
10 #include <vnet/ip/ip4.h>
11 #include <vnet/ip/ip6.h>
12 #include <vnet/ip/udp.h>
13 #include <vnet/ip/ip6_packet.h>
14 #include <vnet/adj/adj.h>
15 #include <vnet/adj/adj_nbr.h>
16 #include <vnet/bfd/bfd_debug.h>
17 #include <vnet/bfd/bfd_udp.h>
18 #include <vnet/bfd/bfd_main.h>
19 #include <vnet/bfd/bfd_api.h>
24 /* hashmap - bfd session index by bfd key - used for CLI/API lookup, where
25 * discriminator is unknown */
26 mhash_t bfd_session_idx_by_bfd_key;
29 static vlib_node_registration_t bfd_udp4_input_node;
30 static vlib_node_registration_t bfd_udp6_input_node;
32 bfd_udp_main_t bfd_udp_main;
35 bfd_add_udp4_transport (vlib_main_t * vm, vlib_buffer_t * b,
36 bfd_udp_session_t * bus)
39 const bfd_udp_key_t *key = &bus->key;
41 b->flags |= VNET_BUFFER_LOCALLY_ORIGINATED;
42 vnet_buffer (b)->ip.adj_index[VLIB_RX] = bus->adj_index;
43 vnet_buffer (b)->ip.adj_index[VLIB_TX] = bus->adj_index;
45 const size_t headers_size = sizeof (*ip4) + sizeof (*udp);
46 vlib_buffer_advance (b, -headers_size);
47 ip4 = vlib_buffer_get_current (b);
48 udp = (udp_header_t *) (ip4 + 1);
49 memset (ip4, 0, headers_size);
50 ip4->ip_version_and_header_length = 0x45;
52 ip4->protocol = IP_PROTOCOL_UDP;
53 ip4->src_address.as_u32 = key->local_addr.ip4.as_u32;
54 ip4->dst_address.as_u32 = key->peer_addr.ip4.as_u32;
56 udp->src_port = clib_host_to_net_u16 (50000); /* FIXME */
57 udp->dst_port = clib_host_to_net_u16 (UDP_DST_PORT_bfd4);
59 /* fix ip length, checksum and udp length */
60 const u16 ip_length = vlib_buffer_length_in_chain (vm, b);
62 ip4->length = clib_host_to_net_u16 (ip_length);
63 ip4->checksum = ip4_header_checksum (ip4);
65 const u16 udp_length = ip_length - (sizeof (*ip4));
66 udp->length = clib_host_to_net_u16 (udp_length);
70 bfd_add_udp6_transport (vlib_main_t * vm, vlib_buffer_t * b,
71 bfd_udp_session_t * bus)
74 const bfd_udp_key_t *key = &bus->key;
76 b->flags |= VNET_BUFFER_LOCALLY_ORIGINATED;
77 vnet_buffer (b)->ip.adj_index[VLIB_RX] = bus->adj_index;
78 vnet_buffer (b)->ip.adj_index[VLIB_TX] = bus->adj_index;
80 const size_t headers_size = sizeof (*ip6) + sizeof (*udp);
81 vlib_buffer_advance (b, -headers_size);
82 ip6 = vlib_buffer_get_current (b);
83 udp = (udp_header_t *) (ip6 + 1);
84 memset (ip6, 0, headers_size);
85 ip6->ip_version_traffic_class_and_flow_label =
86 clib_host_to_net_u32 (0x6 << 28);
88 ip6->protocol = IP_PROTOCOL_UDP;
89 clib_memcpy (&ip6->src_address, &key->local_addr.ip6,
90 sizeof (ip6->src_address));
91 clib_memcpy (&ip6->dst_address, &key->peer_addr.ip6,
92 sizeof (ip6->dst_address));
94 udp->src_port = clib_host_to_net_u16 (50000); /* FIXME */
95 udp->dst_port = clib_host_to_net_u16 (UDP_DST_PORT_bfd6);
97 /* fix ip payload length and udp length */
98 const u16 udp_length =
99 vlib_buffer_length_in_chain (vm, b) - (sizeof (*ip6));
100 udp->length = clib_host_to_net_u16 (udp_length);
101 ip6->payload_length = udp->length;
103 /* IPv6 UDP checksum is mandatory */
105 udp->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus);
107 if (udp->checksum == 0)
109 udp->checksum = 0xffff;
113 static bfd_session_t *
114 bfd_lookup_session (bfd_udp_main_t * bum, const bfd_udp_key_t * key)
116 uword *p = mhash_get (&bum->bfd_session_idx_by_bfd_key, key);
119 return bfd_find_session_by_idx (bum->bfd_main, *p);
124 static vnet_api_error_t
125 bfd_udp_add_session_internal (bfd_udp_main_t * bum, u32 sw_if_index,
126 u32 desired_min_tx_us, u32 required_min_rx_us,
128 const ip46_address_t * local_addr,
129 const ip46_address_t * peer_addr,
132 vnet_sw_interface_t *sw_if =
133 vnet_get_sw_interface (vnet_get_main (), sw_if_index);
134 /* get a pool entry and if we end up not needing it, give it back */
135 bfd_transport_t t = BFD_TRANSPORT_UDP4;
136 if (!ip46_address_is_ip4 (local_addr))
138 t = BFD_TRANSPORT_UDP6;
140 bfd_session_t *bs = bfd_get_session (bum->bfd_main, t);
141 bfd_udp_session_t *bus = &bs->udp;
142 memset (bus, 0, sizeof (*bus));
143 bfd_udp_key_t *key = &bus->key;
144 key->sw_if_index = sw_if->sw_if_index;
145 key->local_addr.as_u64[0] = local_addr->as_u64[0];
146 key->local_addr.as_u64[1] = local_addr->as_u64[1];
147 key->peer_addr.as_u64[0] = peer_addr->as_u64[0];
148 key->peer_addr.as_u64[1] = peer_addr->as_u64[1];
149 const bfd_session_t *tmp = bfd_lookup_session (bum, key);
152 BFD_ERR ("duplicate bfd-udp session, existing bs_idx=%d", tmp->bs_idx);
153 bfd_put_session (bum->bfd_main, bs);
154 return VNET_API_ERROR_BFD_EEXIST;
156 key->sw_if_index = sw_if->sw_if_index;
157 mhash_set (&bum->bfd_session_idx_by_bfd_key, key, bs->bs_idx, NULL);
158 BFD_DBG ("session created, bs_idx=%u, sw_if_index=%d, local=%U, peer=%U",
159 bs->bs_idx, key->sw_if_index, format_ip46_address,
160 &key->local_addr, IP46_TYPE_ANY, format_ip46_address,
161 &key->peer_addr, IP46_TYPE_ANY);
162 if (BFD_TRANSPORT_UDP4 == t)
164 bus->adj_index = adj_nbr_add_or_lock (FIB_PROTOCOL_IP4, VNET_LINK_IP4,
167 BFD_DBG ("adj_nbr_add_or_lock(FIB_PROTOCOL_IP4, VNET_LINK_IP4, %U, %d) "
168 "returns %d", format_ip46_address, &key->peer_addr,
169 IP46_TYPE_ANY, key->sw_if_index, bus->adj_index);
173 bus->adj_index = adj_nbr_add_or_lock (FIB_PROTOCOL_IP6, VNET_LINK_IP6,
176 BFD_DBG ("adj_nbr_add_or_lock(FIB_PROTOCOL_IP6, VNET_LINK_IP6, %U, %d) "
177 "returns %d", format_ip46_address, &key->peer_addr,
178 IP46_TYPE_ANY, key->sw_if_index, bus->adj_index);
180 bs->config_desired_min_tx_us = desired_min_tx_us;
181 bs->required_min_rx_us = required_min_rx_us;
182 bs->required_min_echo_rx_us = required_min_rx_us; /* FIXME */
183 bs->local_detect_mult = detect_mult;
184 bfd_session_start (bum->bfd_main, bs);
185 *bs_index = bs->bs_idx;
189 static vnet_api_error_t
190 bfd_udp_validate_api_input (u32 sw_if_index,
191 const ip46_address_t * local_addr,
192 const ip46_address_t * peer_addr)
194 vnet_sw_interface_t *sw_if =
195 vnet_get_sw_interface (vnet_get_main (), sw_if_index);
196 u8 local_ip_valid = 0;
197 ip_interface_address_t *ia = NULL;
200 BFD_ERR ("got NULL sw_if");
201 return VNET_API_ERROR_INVALID_SW_IF_INDEX;
203 if (ip46_address_is_ip4 (local_addr))
205 if (!ip46_address_is_ip4 (peer_addr))
207 BFD_ERR ("IP family mismatch");
208 return VNET_API_ERROR_INVALID_ARGUMENT;
210 ip4_main_t *im = &ip4_main;
213 foreach_ip_interface_address (
214 &im->lookup_main, ia, sw_if_index, 0 /* honor unnumbered */, ({
216 ip_interface_address_get_address (&im->lookup_main, ia);
217 if (x->as_u32 == local_addr->ip4.as_u32)
219 /* valid address for this interface */
228 if (ip46_address_is_ip4 (peer_addr))
230 BFD_ERR ("IP family mismatch");
231 return VNET_API_ERROR_INVALID_ARGUMENT;
233 ip6_main_t *im = &ip6_main;
235 foreach_ip_interface_address (
236 &im->lookup_main, ia, sw_if_index, 0 /* honor unnumbered */, ({
238 ip_interface_address_get_address (&im->lookup_main, ia);
239 if (local_addr->ip6.as_u64[0] == x->as_u64[0] &&
240 local_addr->ip6.as_u64[1] == x->as_u64[1])
242 /* valid address for this interface */
252 BFD_ERR ("address not found on interface");
253 return VNET_API_ERROR_ADDRESS_NOT_FOUND_FOR_INTERFACE;
260 bfd_udp_add_session (u32 sw_if_index, u32 desired_min_tx_us,
261 u32 required_min_rx_us, u8 detect_mult,
262 const ip46_address_t * local_addr,
263 const ip46_address_t * peer_addr, u32 * bs_index)
265 vnet_api_error_t rv =
266 bfd_udp_validate_api_input (sw_if_index, local_addr, peer_addr);
273 BFD_ERR ("detect_mult < 1");
274 return VNET_API_ERROR_INVALID_ARGUMENT;
276 if (desired_min_tx_us < 1)
278 BFD_ERR ("desired_min_tx_us < 1");
279 return VNET_API_ERROR_INVALID_ARGUMENT;
281 return bfd_udp_add_session_internal (&bfd_udp_main, sw_if_index,
282 desired_min_tx_us, required_min_rx_us,
283 detect_mult, local_addr, peer_addr,
288 bfd_udp_del_session (u32 sw_if_index,
289 const ip46_address_t * local_addr,
290 const ip46_address_t * peer_addr)
292 vnet_api_error_t rv =
293 bfd_udp_validate_api_input (sw_if_index, local_addr, peer_addr);
298 bfd_udp_main_t *bum = &bfd_udp_main;
299 vnet_sw_interface_t *sw_if =
300 vnet_get_sw_interface (vnet_get_main (), sw_if_index);
302 memset (&key, 0, sizeof (key));
303 key.sw_if_index = sw_if->sw_if_index;
304 key.local_addr.as_u64[0] = local_addr->as_u64[0];
305 key.local_addr.as_u64[1] = local_addr->as_u64[1];
306 key.peer_addr.as_u64[0] = peer_addr->as_u64[0];
307 key.peer_addr.as_u64[1] = peer_addr->as_u64[1];
308 bfd_session_t *tmp = bfd_lookup_session (bum, &key);
311 BFD_DBG ("free bfd-udp session, bs_idx=%d", tmp->bs_idx);
312 mhash_unset (&bum->bfd_session_idx_by_bfd_key, &key, NULL);
313 adj_unlock (tmp->udp.adj_index);
314 bfd_put_session (bum->bfd_main, tmp);
318 BFD_ERR ("no such session");
319 return VNET_API_ERROR_BFD_NOENT;
326 BFD_UDP_INPUT_NEXT_NORMAL,
327 BFD_UDP_INPUT_NEXT_REPLY,
328 BFD_UDP_INPUT_N_NEXT,
329 } bfd_udp_input_next_t;
331 /* Packet counters */
332 #define foreach_bfd_udp_error(F) \
333 F (NONE, "good bfd packets (processed)") \
334 F (BAD, "invalid bfd packets") \
335 F (DISABLED, "bfd packets received on disabled interfaces")
337 #define F(sym, string) static char BFD_UDP_ERR_##sym##_STR[] = string;
338 foreach_bfd_udp_error (F);
341 static char *bfd_udp_error_strings[] = {
342 #define F(sym, string) BFD_UDP_ERR_##sym##_STR,
343 foreach_bfd_udp_error (F)
349 #define F(sym, str) BFD_UDP_ERROR_##sym,
350 foreach_bfd_udp_error (F)
356 bfd_udp4_find_headers (vlib_buffer_t * b, const ip4_header_t ** ip4,
357 const udp_header_t ** udp)
359 /* sanity check first */
360 const i32 start = vnet_buffer (b)->ip.start_of_ip_header;
361 if (start < 0 && start < sizeof (b->pre_data))
363 BFD_ERR ("Start of ip header is before pre_data, ignoring");
368 *ip4 = (ip4_header_t *) (b->data + start);
369 if ((u8 *) * ip4 > (u8 *) vlib_buffer_get_current (b))
371 BFD_ERR ("Start of ip header is beyond current data, ignoring");
376 *udp = (udp_header_t *) ((*ip4) + 1);
379 static bfd_udp_error_t
380 bfd_udp4_verify_transport (const ip4_header_t * ip4,
381 const udp_header_t * udp, const bfd_session_t * bs)
383 const bfd_udp_session_t *bus = &bs->udp;
384 const bfd_udp_key_t *key = &bus->key;
385 if (ip4->src_address.as_u32 != key->peer_addr.ip4.as_u32)
387 BFD_ERR ("IPv4 src addr mismatch, got %U, expected %U",
388 format_ip4_address, ip4->src_address.as_u8, format_ip4_address,
389 key->peer_addr.ip4.as_u8);
390 return BFD_UDP_ERROR_BAD;
392 if (ip4->dst_address.as_u32 != key->local_addr.ip4.as_u32)
394 BFD_ERR ("IPv4 dst addr mismatch, got %U, expected %U",
395 format_ip4_address, ip4->dst_address.as_u8, format_ip4_address,
396 key->local_addr.ip4.as_u8);
397 return BFD_UDP_ERROR_BAD;
399 const u8 expected_ttl = 255;
400 if (ip4->ttl != expected_ttl)
402 BFD_ERR ("IPv4 unexpected TTL value %u, expected %u", ip4->ttl,
404 return BFD_UDP_ERROR_BAD;
406 if (clib_net_to_host_u16 (udp->src_port) < 49152 ||
407 clib_net_to_host_u16 (udp->src_port) > 65535)
409 BFD_ERR ("Invalid UDP src port %u, out of range <49152,65535>",
412 return BFD_UDP_ERROR_NONE;
422 bfd_rpc_update_session_cb (const bfd_rpc_update_t * a)
424 bfd_consume_pkt (bfd_udp_main.bfd_main, &a->pkt, a->bs_idx);
428 bfd_rpc_update_session (u32 bs_idx, const bfd_pkt_t * pkt)
430 /* packet length was already verified to be correct by the caller */
431 const u32 data_size = sizeof (bfd_rpc_update_t) -
432 STRUCT_SIZE_OF (bfd_rpc_update_t, pkt) + pkt->head.length;
434 bfd_rpc_update_t *update = (bfd_rpc_update_t *) data;
435 update->bs_idx = bs_idx;
436 clib_memcpy (&update->pkt, pkt, pkt->head.length);
437 vl_api_rpc_call_main_thread (bfd_rpc_update_session_cb, data, data_size);
440 static bfd_udp_error_t
441 bfd_udp4_scan (vlib_main_t * vm, vlib_node_runtime_t * rt,
442 vlib_buffer_t * b, bfd_session_t ** bs_out)
444 const bfd_pkt_t *pkt = vlib_buffer_get_current (b);
445 if (sizeof (*pkt) > b->current_length)
448 ("Payload size %d too small to hold bfd packet of minimum size %d",
449 b->current_length, sizeof (*pkt));
450 return BFD_UDP_ERROR_BAD;
452 const ip4_header_t *ip4;
453 const udp_header_t *udp;
454 bfd_udp4_find_headers (b, &ip4, &udp);
457 BFD_ERR ("Couldn't find ip4 or udp header");
458 return BFD_UDP_ERROR_BAD;
460 if (!bfd_verify_pkt_common (pkt))
462 return BFD_UDP_ERROR_BAD;
464 bfd_session_t *bs = NULL;
467 BFD_DBG ("Looking up BFD session using discriminator %u",
469 bs = bfd_find_session_by_disc (bfd_udp_main.bfd_main, pkt->your_disc);
474 memset (&key, 0, sizeof (key));
475 key.sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];
476 key.local_addr.ip4.as_u32 = ip4->dst_address.as_u32;
477 key.peer_addr.ip4.as_u32 = ip4->src_address.as_u32;
478 BFD_DBG ("Looking up BFD session using key (sw_if_index=%u, local=%U, "
480 key.sw_if_index, format_ip4_address, key.local_addr.ip4.as_u8,
481 format_ip4_address, key.peer_addr.ip4.as_u8);
482 bs = bfd_lookup_session (&bfd_udp_main, &key);
486 BFD_ERR ("BFD session lookup failed - no session matches BFD pkt");
487 return BFD_UDP_ERROR_BAD;
489 BFD_DBG ("BFD session found, bs_idx=%u", bs->bs_idx);
490 if (!bfd_verify_pkt_session (pkt, b->current_length, bs))
492 return BFD_UDP_ERROR_BAD;
495 if (BFD_UDP_ERROR_NONE != (err = bfd_udp4_verify_transport (ip4, udp, bs)))
499 bfd_rpc_update_session (bs->bs_idx, pkt);
501 return BFD_UDP_ERROR_NONE;
505 bfd_udp6_find_headers (vlib_buffer_t * b, const ip6_header_t ** ip6,
506 const udp_header_t ** udp)
508 /* sanity check first */
509 const i32 start = vnet_buffer (b)->ip.start_of_ip_header;
510 if (start < 0 && start < sizeof (b->pre_data))
512 BFD_ERR ("Start of ip header is before pre_data, ignoring");
517 *ip6 = (ip6_header_t *) (b->data + start);
518 if ((u8 *) * ip6 > (u8 *) vlib_buffer_get_current (b))
520 BFD_ERR ("Start of ip header is beyond current data, ignoring");
525 *udp = (udp_header_t *) ((*ip6) + 1);
528 static bfd_udp_error_t
529 bfd_udp6_verify_transport (const ip6_header_t * ip6,
530 const udp_header_t * udp, const bfd_session_t * bs)
532 const bfd_udp_session_t *bus = &bs->udp;
533 const bfd_udp_key_t *key = &bus->key;
534 if (ip6->src_address.as_u64[0] != key->peer_addr.ip6.as_u64[0] &&
535 ip6->src_address.as_u64[1] != key->peer_addr.ip6.as_u64[1])
537 BFD_ERR ("IP src addr mismatch, got %U, expected %U",
538 format_ip6_address, ip6, format_ip6_address,
539 &key->peer_addr.ip6);
540 return BFD_UDP_ERROR_BAD;
542 if (ip6->dst_address.as_u64[0] != key->local_addr.ip6.as_u64[0] &&
543 ip6->dst_address.as_u64[1] != key->local_addr.ip6.as_u64[1])
545 BFD_ERR ("IP dst addr mismatch, got %U, expected %U",
546 format_ip6_address, ip6, format_ip6_address,
547 &key->local_addr.ip6);
548 return BFD_UDP_ERROR_BAD;
550 const u8 expected_hop_limit = 255;
551 if (ip6->hop_limit != expected_hop_limit)
553 BFD_ERR ("IPv6 unexpected hop-limit value %u, expected %u",
554 ip6->hop_limit, expected_hop_limit);
555 return BFD_UDP_ERROR_BAD;
557 if (clib_net_to_host_u16 (udp->src_port) < 49152 ||
558 clib_net_to_host_u16 (udp->src_port) > 65535)
560 BFD_ERR ("Invalid UDP src port %u, out of range <49152,65535>",
563 return BFD_UDP_ERROR_NONE;
566 static bfd_udp_error_t
567 bfd_udp6_scan (vlib_main_t * vm, vlib_node_runtime_t * rt,
568 vlib_buffer_t * b, bfd_session_t ** bs_out)
570 const bfd_pkt_t *pkt = vlib_buffer_get_current (b);
571 if (sizeof (*pkt) > b->current_length)
574 ("Payload size %d too small to hold bfd packet of minimum size %d",
575 b->current_length, sizeof (*pkt));
576 return BFD_UDP_ERROR_BAD;
578 const ip6_header_t *ip6;
579 const udp_header_t *udp;
580 bfd_udp6_find_headers (b, &ip6, &udp);
583 BFD_ERR ("Couldn't find ip6 or udp header");
584 return BFD_UDP_ERROR_BAD;
586 if (!bfd_verify_pkt_common (pkt))
588 return BFD_UDP_ERROR_BAD;
590 bfd_session_t *bs = NULL;
593 BFD_DBG ("Looking up BFD session using discriminator %u",
595 bs = bfd_find_session_by_disc (bfd_udp_main.bfd_main, pkt->your_disc);
600 memset (&key, 0, sizeof (key));
601 key.sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];
602 key.local_addr.ip6.as_u64[0] = ip6->dst_address.as_u64[0];
603 key.local_addr.ip6.as_u64[1] = ip6->dst_address.as_u64[1];
604 key.peer_addr.ip6.as_u64[0] = ip6->src_address.as_u64[0];
605 key.peer_addr.ip6.as_u64[1] = ip6->src_address.as_u64[1];
606 BFD_DBG ("Looking up BFD session using key (sw_if_index=%u, local=%U, "
608 key.sw_if_index, format_ip6_address, &key.local_addr,
609 format_ip6_address, &key.peer_addr);
610 bs = bfd_lookup_session (&bfd_udp_main, &key);
614 BFD_ERR ("BFD session lookup failed - no session matches BFD pkt");
615 return BFD_UDP_ERROR_BAD;
617 BFD_DBG ("BFD session found, bs_idx=%u", bs->bs_idx);
618 if (!bfd_verify_pkt_session (pkt, b->current_length, bs))
620 return BFD_UDP_ERROR_BAD;
623 if (BFD_UDP_ERROR_NONE != (err = bfd_udp6_verify_transport (ip6, udp, bs)))
627 bfd_rpc_update_session (bs->bs_idx, pkt);
629 return BFD_UDP_ERROR_NONE;
633 * Process a frame of bfd packets
634 * Expect 1 packet / frame
637 bfd_udp_input (vlib_main_t * vm, vlib_node_runtime_t * rt,
638 vlib_frame_t * f, int is_ipv6)
640 u32 n_left_from, *from;
641 bfd_input_trace_t *t0;
643 from = vlib_frame_vector_args (f); /* array of buffer indices */
644 n_left_from = f->n_vectors; /* number of buffer indices */
646 while (n_left_from > 0)
653 b0 = vlib_get_buffer (vm, bi0);
655 bfd_session_t *bs = NULL;
657 /* If this pkt is traced, snapshot the data */
658 if (b0->flags & VLIB_BUFFER_IS_TRACED)
661 t0 = vlib_add_trace (vm, rt, b0, sizeof (*t0));
662 len = (b0->current_length < sizeof (t0->data)) ? b0->current_length
665 clib_memcpy (t0->data, vlib_buffer_get_current (b0), len);
668 /* scan this bfd pkt. error0 is the counter index to bmp */
671 error0 = bfd_udp6_scan (vm, rt, b0, &bs);
675 error0 = bfd_udp4_scan (vm, rt, b0, &bs);
677 b0->error = rt->errors[error0];
679 next0 = BFD_UDP_INPUT_NEXT_NORMAL;
680 if (BFD_UDP_ERROR_NONE == error0)
682 /* if everything went fine, check for poll bit, if present, re-use
683 the buffer and based on (now updated) session parameters, send the
685 const bfd_pkt_t *pkt = vlib_buffer_get_current (b0);
686 if (bfd_pkt_get_poll (pkt))
688 bfd_send_final (vm, b0, bs);
691 vlib_node_increment_counter (vm, bfd_udp6_input_node.index,
696 vlib_node_increment_counter (vm, bfd_udp4_input_node.index,
699 next0 = BFD_UDP_INPUT_NEXT_REPLY;
702 vlib_set_next_frame_buffer (vm, rt, next0, bi0);
712 bfd_udp4_input (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
714 return bfd_udp_input (vm, rt, f, 0);
718 * bfd input graph node declaration
721 VLIB_REGISTER_NODE (bfd_udp4_input_node, static) = {
722 .function = bfd_udp4_input,
723 .name = "bfd-udp4-input",
724 .vector_size = sizeof (u32),
725 .type = VLIB_NODE_TYPE_INTERNAL,
727 .n_errors = BFD_UDP_N_ERROR,
728 .error_strings = bfd_udp_error_strings,
730 .format_trace = bfd_input_format_trace,
732 .n_next_nodes = BFD_UDP_INPUT_N_NEXT,
735 [BFD_UDP_INPUT_NEXT_NORMAL] = "error-drop",
736 [BFD_UDP_INPUT_NEXT_REPLY] = "ip4-lookup",
742 bfd_udp6_input (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
744 return bfd_udp_input (vm, rt, f, 1);
748 VLIB_REGISTER_NODE (bfd_udp6_input_node, static) = {
749 .function = bfd_udp6_input,
750 .name = "bfd-udp6-input",
751 .vector_size = sizeof (u32),
752 .type = VLIB_NODE_TYPE_INTERNAL,
754 .n_errors = BFD_UDP_N_ERROR,
755 .error_strings = bfd_udp_error_strings,
757 .format_trace = bfd_input_format_trace,
759 .n_next_nodes = BFD_UDP_INPUT_N_NEXT,
762 [BFD_UDP_INPUT_NEXT_NORMAL] = "error-drop",
763 [BFD_UDP_INPUT_NEXT_REPLY] = "ip6-lookup",
768 static clib_error_t *
769 bfd_sw_interface_up_down (vnet_main_t * vnm, u32 sw_if_index, u32 flags)
771 // vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
772 if (!(flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP))
779 VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION (bfd_sw_interface_up_down);
781 static clib_error_t *
782 bfd_hw_interface_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
784 if (flags & VNET_HW_INTERFACE_FLAG_LINK_UP)
791 VNET_HW_INTERFACE_LINK_UP_DOWN_FUNCTION (bfd_hw_interface_up_down);
796 static clib_error_t *
797 bfd_udp_init (vlib_main_t * vm)
799 mhash_init (&bfd_udp_main.bfd_session_idx_by_bfd_key, sizeof (uword),
800 sizeof (bfd_udp_key_t));
801 bfd_udp_main.bfd_main = &bfd_main;
802 udp_register_dst_port (vm, UDP_DST_PORT_bfd4, bfd_udp4_input_node.index, 1);
803 udp_register_dst_port (vm, UDP_DST_PORT_bfd6, bfd_udp6_input_node.index, 0);
807 VLIB_INIT_FUNCTION (bfd_udp_init);
810 * fd.io coding-style-patch-verification: ON
813 * eval: (c-set-style "gnu")