2 *------------------------------------------------------------------
3 * af_packet.c - linux kernel packet interface
5 * Copyright (c) 2016 Cisco and/or its affiliates.
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at:
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 *------------------------------------------------------------------
20 #include <linux/if_ether.h>
21 #include <linux/if_packet.h>
22 #include <sys/ioctl.h>
26 #include <sys/types.h>
29 #include <vppinfra/linux/sysfs.h>
30 #include <vlib/vlib.h>
31 #include <vlib/unix/unix.h>
32 #include <vnet/ip/ip.h>
33 #include <vnet/devices/netlink.h>
34 #include <vnet/ethernet/ethernet.h>
35 #include <vnet/interface/rx_queue_funcs.h>
36 #include <vnet/interface/tx_queue_funcs.h>
38 #include <vnet/devices/af_packet/af_packet.h>
40 af_packet_main_t af_packet_main;
42 VNET_HW_INTERFACE_CLASS (af_packet_ip_device_hw_interface_class, static) = {
43 .name = "af-packet-ip-device",
44 .flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P,
47 #define AF_PACKET_DEFAULT_TX_FRAMES_PER_BLOCK 1024
48 #define AF_PACKET_DEFAULT_TX_FRAME_SIZE (2048 * 33) // GSO packet of 64KB
49 #define AF_PACKET_TX_BLOCK_NR 1
51 #define AF_PACKET_DEFAULT_RX_FRAMES_PER_BLOCK 32
52 #define AF_PACKET_DEFAULT_RX_FRAME_SIZE 2048
53 #define AF_PACKET_RX_BLOCK_NR 160
55 /*defined in net/if.h but clashes with dpdk headers */
56 unsigned int if_nametoindex (const char *ifname);
59 af_packet_eth_set_max_frame_size (vnet_main_t *vnm, vnet_hw_interface_t *hi,
62 clib_error_t *error, *rv;
63 af_packet_main_t *apm = &af_packet_main;
64 af_packet_if_t *apif = pool_elt_at_index (apm->interfaces, hi->dev_instance);
66 error = vnet_netlink_set_link_mtu (apif->host_if_index,
67 frame_size + hi->frame_overhead);
71 vlib_log_err (apm->log_class, "netlink failed to change MTU: %U",
72 format_clib_error, error);
73 rv = vnet_error (VNET_ERR_SYSCALL_ERROR_1, "netlink error: %U",
74 format_clib_error, error);
75 clib_error_free (error);
79 apif->host_mtu = frame_size + hi->frame_overhead;
84 af_packet_read_mtu (af_packet_if_t *apif)
86 af_packet_main_t *apm = &af_packet_main;
88 error = vnet_netlink_get_link_mtu (apif->host_if_index, &apif->host_mtu);
91 vlib_log_err (apm->log_class, "netlink failed to get MTU: %U",
92 format_clib_error, error);
93 clib_error_free (error);
94 return VNET_API_ERROR_SYSCALL_ERROR_1;
100 af_packet_fd_read_ready (clib_file_t * uf)
102 vnet_main_t *vnm = vnet_get_main ();
104 /* Schedule the rx node */
105 vnet_hw_if_rx_queue_set_int_pending (vnm, uf->private_data);
110 is_bridge (const u8 * host_if_name)
115 s = format (0, "/sys/class/net/%s/bridge%c", host_if_name, 0);
116 dir = opendir ((char *) s);
129 af_packet_set_rx_queues (vlib_main_t *vm, af_packet_if_t *apif)
131 vnet_main_t *vnm = vnet_get_main ();
132 af_packet_queue_t *rx_queue;
134 vnet_hw_if_set_input_node (vnm, apif->hw_if_index,
135 af_packet_input_node.index);
137 vec_foreach (rx_queue, apif->rx_queues)
139 rx_queue->queue_index = vnet_hw_if_register_rx_queue (
140 vnm, apif->hw_if_index, rx_queue->queue_id, VNET_HW_IF_RXQ_THREAD_ANY);
143 clib_file_t template = { 0 };
144 template.read_function = af_packet_fd_read_ready;
145 template.file_descriptor = rx_queue->fd;
146 template.private_data = rx_queue->queue_index;
147 template.flags = UNIX_FILE_EVENT_EDGE_TRIGGERED;
148 template.description =
149 format (0, "%U queue %u", format_af_packet_device_name,
150 apif->dev_instance, rx_queue->queue_id);
151 rx_queue->clib_file_index = clib_file_add (&file_main, &template);
153 vnet_hw_if_set_rx_queue_file_index (vnm, rx_queue->queue_index,
154 rx_queue->clib_file_index);
155 vnet_hw_if_set_rx_queue_mode (vnm, rx_queue->queue_index,
156 VNET_HW_IF_RX_MODE_INTERRUPT);
157 rx_queue->mode = VNET_HW_IF_RX_MODE_INTERRUPT;
159 vnet_hw_if_update_runtime_data (vnm, apif->hw_if_index);
163 af_packet_set_tx_queues (vlib_main_t *vm, af_packet_if_t *apif)
165 vnet_main_t *vnm = vnet_get_main ();
166 af_packet_main_t *apm = &af_packet_main;
167 af_packet_queue_t *tx_queue;
169 vec_foreach (tx_queue, apif->tx_queues)
171 tx_queue->queue_index = vnet_hw_if_register_tx_queue (
172 vnm, apif->hw_if_index, tx_queue->queue_id);
175 if (apif->num_txqs == 0)
177 vlib_log_err (apm->log_class, "Interface %U has 0 txq",
178 format_vnet_hw_if_index_name, vnm, apif->hw_if_index);
182 for (u32 j = 0; j < vlib_get_n_threads (); j++)
184 u32 qi = apif->tx_queues[j % apif->num_txqs].queue_index;
185 vnet_hw_if_tx_queue_assign_thread (vnm, qi, j);
188 vnet_hw_if_update_runtime_data (vnm, apif->hw_if_index);
192 create_packet_v3_sock (int host_if_index, tpacket_req3_t *rx_req,
193 tpacket_req3_t *tx_req, int *fd, af_packet_ring_t *ring,
194 u32 fanout_id, af_packet_if_flags_t *flags)
196 af_packet_main_t *apm = &af_packet_main;
197 struct sockaddr_ll sll;
198 socklen_t req_sz = sizeof (tpacket_req3_t);
200 int ver = TPACKET_V3;
204 ring_sz += rx_req->tp_block_size * rx_req->tp_block_nr;
207 ring_sz += tx_req->tp_block_size * tx_req->tp_block_nr;
209 if ((*fd = socket (AF_PACKET, SOCK_RAW, htons (ETH_P_ALL))) < 0)
211 vlib_log_err (apm->log_class,
212 "Failed to create AF_PACKET socket: %s (errno %d)",
213 strerror (errno), errno);
214 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
218 /* bind before rx ring is cfged so we don't receive packets from other interfaces */
219 clib_memset (&sll, 0, sizeof (sll));
220 sll.sll_family = PF_PACKET;
221 sll.sll_protocol = htons (ETH_P_ALL);
222 sll.sll_ifindex = host_if_index;
223 if (bind (*fd, (struct sockaddr *) &sll, sizeof (sll)) < 0)
225 vlib_log_err (apm->log_class,
226 "Failed to bind rx packet socket: %s (errno %d)",
227 strerror (errno), errno);
228 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
232 if (setsockopt (*fd, SOL_PACKET, PACKET_VERSION, &ver, sizeof (ver)) < 0)
234 vlib_log_err (apm->log_class,
235 "Failed to set rx packet interface version: %s (errno %d)",
236 strerror (errno), errno);
237 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
242 if (setsockopt (*fd, SOL_PACKET, PACKET_LOSS, &opt, sizeof (opt)) < 0)
246 "Failed to set packet tx ring error handling option: %s (errno %d)",
247 strerror (errno), errno);
248 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
252 if (*flags & AF_PACKET_IF_FLAGS_CKSUM_GSO)
256 if (setsockopt (*fd, SOL_PACKET, PACKET_VNET_HDR, &opt2, sizeof (opt2)) <
260 *flags &= ~AF_PACKET_IF_FLAGS_CKSUM_GSO;
261 vlib_log_debug (apm->log_class,
262 "Failed to set packet vnet hdr error handling "
263 "option: %s (errno %d)",
264 strerror (errno), errno);
268 #if defined(PACKET_QDISC_BYPASS)
269 if (*flags & AF_PACKET_IF_FLAGS_QDISC_BYPASS)
270 /* Introduced with Linux 3.14 so the ifdef should eventually be removed */
271 if (setsockopt (*fd, SOL_PACKET, PACKET_QDISC_BYPASS, &opt, sizeof (opt)) <
275 *flags &= ~AF_PACKET_IF_FLAGS_QDISC_BYPASS;
276 vlib_log_debug (apm->log_class,
277 "Failed to set qdisc bypass error "
278 "handling option: %s (errno %d)",
279 strerror (errno), errno);
285 if (*flags & AF_PACKET_IF_FLAGS_FANOUT)
287 int fanout = ((fanout_id & 0xffff) | ((PACKET_FANOUT_HASH) << 16));
288 if (setsockopt (*fd, SOL_PACKET, PACKET_FANOUT, &fanout,
289 sizeof (fanout)) < 0)
292 *flags &= ~AF_PACKET_IF_FLAGS_FANOUT;
293 vlib_log_err (apm->log_class,
294 "Failed to set fanout options: %s (errno %d)",
295 strerror (errno), errno);
296 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
301 if (setsockopt (*fd, SOL_PACKET, PACKET_RX_RING, rx_req, req_sz) < 0)
303 vlib_log_err (apm->log_class,
304 "Failed to set packet rx ring options: %s (errno %d)",
305 strerror (errno), errno);
306 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
312 if (setsockopt (*fd, SOL_PACKET, PACKET_TX_RING, tx_req, req_sz) < 0)
314 vlib_log_err (apm->log_class,
315 "Failed to set packet tx ring options: %s (errno %d)",
316 strerror (errno), errno);
317 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
321 ring->ring_start_addr = mmap (NULL, ring_sz, PROT_READ | PROT_WRITE,
322 MAP_SHARED | MAP_LOCKED, *fd, 0);
323 if (ring->ring_start_addr == MAP_FAILED)
325 vlib_log_err (apm->log_class, "mmap failure: %s (errno %d)",
326 strerror (errno), errno);
327 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
331 ring->ring_size = ring_sz;
344 af_packet_queue_init (vlib_main_t *vm, af_packet_if_t *apif,
345 af_packet_create_if_arg_t *arg,
346 af_packet_queue_t *rx_queue, af_packet_queue_t *tx_queue,
349 af_packet_main_t *apm = &af_packet_main;
350 tpacket_req3_t *rx_req = 0;
351 tpacket_req3_t *tx_req = 0;
353 af_packet_ring_t ring = { 0 };
355 u32 rx_frames_per_block, tx_frames_per_block;
356 u32 rx_frame_size, tx_frame_size;
361 rx_frames_per_block = arg->rx_frames_per_block ?
362 arg->rx_frames_per_block :
363 AF_PACKET_DEFAULT_RX_FRAMES_PER_BLOCK;
365 rx_frame_size = arg->rx_frame_size ? arg->rx_frame_size :
366 AF_PACKET_DEFAULT_RX_FRAME_SIZE;
367 vec_validate (rx_queue->rx_req, 0);
368 rx_queue->rx_req->tp_block_size = rx_frame_size * rx_frames_per_block;
369 rx_queue->rx_req->tp_frame_size = rx_frame_size;
370 rx_queue->rx_req->tp_block_nr = AF_PACKET_RX_BLOCK_NR;
371 rx_queue->rx_req->tp_frame_nr =
372 AF_PACKET_RX_BLOCK_NR * rx_frames_per_block;
373 rx_queue->rx_req->tp_retire_blk_tov = 1; // 1 ms block timout
374 rx_queue->rx_req->tp_feature_req_word = 0;
375 rx_queue->rx_req->tp_sizeof_priv = 0;
376 rx_req = rx_queue->rx_req;
381 tx_frames_per_block = arg->tx_frames_per_block ?
382 arg->tx_frames_per_block :
383 AF_PACKET_DEFAULT_TX_FRAMES_PER_BLOCK;
384 tx_frame_size = arg->tx_frame_size ? arg->tx_frame_size :
385 AF_PACKET_DEFAULT_TX_FRAME_SIZE;
387 vec_validate (tx_queue->tx_req, 0);
388 tx_queue->tx_req->tp_block_size = tx_frame_size * tx_frames_per_block;
389 tx_queue->tx_req->tp_frame_size = tx_frame_size;
390 tx_queue->tx_req->tp_block_nr = AF_PACKET_TX_BLOCK_NR;
391 tx_queue->tx_req->tp_frame_nr =
392 AF_PACKET_TX_BLOCK_NR * tx_frames_per_block;
393 tx_queue->tx_req->tp_retire_blk_tov = 0;
394 tx_queue->tx_req->tp_sizeof_priv = 0;
395 tx_queue->tx_req->tp_feature_req_word = 0;
396 tx_req = tx_queue->tx_req;
399 if (rx_queue || tx_queue)
401 ret = create_packet_v3_sock (apif->host_if_index, rx_req, tx_req, &fd,
402 &ring, apif->dev_instance, &arg->flags);
407 vec_add1 (apif->rings, ring);
408 ring_addr = ring.ring_start_addr;
414 vec_validate (rx_queue->rx_ring, rx_queue->rx_req->tp_block_nr - 1);
415 vec_foreach_index (i, rx_queue->rx_ring)
417 rx_queue->rx_ring[i] =
418 ring_addr + i * rx_queue->rx_req->tp_block_size;
421 rx_queue->next_rx_block = 0;
422 rx_queue->queue_id = queue_id;
423 rx_queue->is_rx_pending = 0;
424 ring_addr = ring_addr + rx_queue->rx_req->tp_block_size *
425 rx_queue->rx_req->tp_block_nr;
431 vec_validate (tx_queue->tx_ring, tx_queue->tx_req->tp_block_nr - 1);
432 vec_foreach_index (i, tx_queue->tx_ring)
434 tx_queue->tx_ring[i] =
435 ring_addr + i * tx_queue->tx_req->tp_block_size;
438 tx_queue->next_tx_frame = 0;
439 tx_queue->queue_id = queue_id;
440 clib_spinlock_init (&tx_queue->lockp);
445 vlib_log_err (apm->log_class, "Failed to set queue %u error", queue_id);
447 vec_free (rx_queue->rx_req);
449 vec_free (tx_queue->tx_req);
454 af_packet_device_init (vlib_main_t *vm, af_packet_if_t *apif,
455 af_packet_create_if_arg_t *args)
457 af_packet_main_t *apm = &af_packet_main;
458 af_packet_queue_t *rx_queue = 0;
459 af_packet_queue_t *tx_queue = 0;
460 u16 nq = clib_min (args->num_rxqs, args->num_txqs);
464 // enable fanout feature for multi-rxqs
465 if (args->num_rxqs > 1)
466 args->flags |= AF_PACKET_IF_FLAGS_FANOUT;
468 vec_validate (apif->rx_queues, args->num_rxqs - 1);
469 vec_validate (apif->tx_queues, args->num_txqs - 1);
473 rx_queue = vec_elt_at_index (apif->rx_queues, i);
474 tx_queue = vec_elt_at_index (apif->tx_queues, i);
475 ret = af_packet_queue_init (vm, apif, args, rx_queue, tx_queue, i);
480 if (args->num_rxqs > args->num_txqs)
482 for (; i < args->num_rxqs; i++)
484 rx_queue = vec_elt_at_index (apif->rx_queues, i);
485 ret = af_packet_queue_init (vm, apif, args, rx_queue, 0, i);
490 else if (args->num_txqs > args->num_rxqs)
492 for (; i < args->num_txqs; i++)
494 tx_queue = vec_elt_at_index (apif->tx_queues, i);
495 ret = af_packet_queue_init (vm, apif, args, 0, tx_queue, i);
501 apif->num_rxqs = args->num_rxqs;
502 apif->num_txqs = args->num_txqs;
506 vlib_log_err (apm->log_class, "Failed to init device error");
511 af_packet_create_if (af_packet_create_if_arg_t *arg)
513 af_packet_main_t *apm = &af_packet_main;
514 vlib_main_t *vm = vlib_get_main ();
517 af_packet_if_t *apif = 0;
519 vnet_sw_interface_t *sw;
520 vnet_main_t *vnm = vnet_get_main ();
521 vnet_hw_if_caps_t caps = VNET_HW_IF_CAP_INT_MODE;
524 u8 *host_if_name_dup = 0;
525 int host_if_index = -1;
528 p = mhash_get (&apm->if_index_by_host_if_name, arg->host_if_name);
531 apif = vec_elt_at_index (apm->interfaces, p[0]);
532 arg->sw_if_index = apif->sw_if_index;
533 return VNET_API_ERROR_IF_ALREADY_EXISTS;
536 host_if_name_dup = vec_dup (arg->host_if_name);
539 * make sure host side of interface is 'UP' before binding AF_PACKET
542 if ((fd2 = socket (AF_UNIX, SOCK_DGRAM, 0)) < 0)
544 vlib_log_debug (apm->log_class,
545 "Failed to create AF_UNIX socket: %s (errno %d)",
546 strerror (errno), errno);
547 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
551 clib_memcpy (ifr.ifr_name, (const char *) arg->host_if_name,
552 vec_len (arg->host_if_name));
553 if (ioctl (fd2, SIOCGIFINDEX, &ifr) < 0)
557 "Failed to retrieve the interface (%s) index: %s (errno %d)",
558 arg->host_if_name, strerror (errno), errno);
559 ret = VNET_API_ERROR_INVALID_INTERFACE;
563 host_if_index = ifr.ifr_ifindex;
564 if (ioctl (fd2, SIOCGIFFLAGS, &ifr) < 0)
566 vlib_log_debug (apm->log_class,
567 "Failed to get the active flag: %s (errno %d)",
568 strerror (errno), errno);
569 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
573 if (!(ifr.ifr_flags & IFF_UP))
575 ifr.ifr_flags |= IFF_UP;
576 if (ioctl (fd2, SIOCSIFFLAGS, &ifr) < 0)
578 vlib_log_debug (apm->log_class,
579 "Failed to set the active flag: %s (errno %d)",
580 strerror (errno), errno);
581 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
592 ret = is_bridge (arg->host_if_name);
593 if (ret == 0) /* is a bridge, ignore state */
596 /* So far everything looks good, let's create interface */
597 pool_get (apm->interfaces, apif);
598 if_index = apif - apm->interfaces;
600 apif->dev_instance = if_index;
601 apif->host_if_index = host_if_index;
602 apif->host_if_name = host_if_name_dup;
603 apif->per_interface_next_index = ~0;
604 apif->mode = arg->mode;
606 ret = af_packet_device_init (vm, apif, arg);
610 ret = af_packet_read_mtu (apif);
615 if (apif->mode != AF_PACKET_IF_MODE_IP)
617 vnet_eth_interface_registration_t eir = {};
618 /*use configured or generate random MAC address */
620 clib_memcpy (hw_addr, arg->hw_addr, 6);
623 f64 now = vlib_time_now (vm);
625 rnd = (u32) (now * 1e6);
626 rnd = random_u32 (&rnd);
628 clib_memcpy (hw_addr + 2, &rnd, sizeof (rnd));
633 eir.dev_class_index = af_packet_device_class.index;
634 eir.dev_instance = apif->dev_instance;
635 eir.address = hw_addr;
636 eir.cb.set_max_frame_size = af_packet_eth_set_max_frame_size;
637 apif->hw_if_index = vnet_eth_register_interface (vnm, &eir);
641 apif->hw_if_index = vnet_register_interface (
642 vnm, af_packet_device_class.index, apif->dev_instance,
643 af_packet_ip_device_hw_interface_class.index, apif->dev_instance);
646 sw = vnet_get_hw_sw_interface (vnm, apif->hw_if_index);
647 apif->sw_if_index = sw->sw_if_index;
649 af_packet_set_rx_queues (vm, apif);
650 af_packet_set_tx_queues (vm, apif);
652 if (arg->flags & AF_PACKET_IF_FLAGS_FANOUT)
653 apif->is_fanout_enabled = 1;
655 apif->is_qdisc_bypass_enabled =
656 (arg->flags & AF_PACKET_IF_FLAGS_QDISC_BYPASS);
658 if (arg->flags & AF_PACKET_IF_FLAGS_CKSUM_GSO)
659 apif->is_cksum_gso_enabled = 1;
661 if (apif->is_cksum_gso_enabled)
662 caps |= VNET_HW_IF_CAP_TCP_GSO | VNET_HW_IF_CAP_TX_IP4_CKSUM |
663 VNET_HW_IF_CAP_TX_TCP_CKSUM | VNET_HW_IF_CAP_TX_UDP_CKSUM;
665 vnet_hw_if_set_caps (vnm, apif->hw_if_index, caps);
666 vnet_hw_interface_set_flags (vnm, apif->hw_if_index,
667 VNET_HW_INTERFACE_FLAG_LINK_UP);
669 mhash_set_mem (&apm->if_index_by_host_if_name, host_if_name_dup, &if_index,
671 arg->sw_if_index = apif->sw_if_index;
681 vec_free (host_if_name_dup);
684 memset (apif, 0, sizeof (*apif));
685 pool_put (apm->interfaces, apif);
691 af_packet_rx_queue_free (af_packet_if_t *apif, af_packet_queue_t *rx_queue)
693 clib_file_del_by_index (&file_main, rx_queue->clib_file_index);
694 close (rx_queue->fd);
696 rx_queue->rx_ring = NULL;
697 vec_free (rx_queue->rx_req);
698 rx_queue->rx_req = NULL;
703 af_packet_tx_queue_free (af_packet_if_t *apif, af_packet_queue_t *tx_queue)
705 close (tx_queue->fd);
707 clib_spinlock_free (&tx_queue->lockp);
708 tx_queue->tx_ring = NULL;
709 vec_free (tx_queue->tx_req);
710 tx_queue->tx_req = NULL;
715 af_packet_ring_free (af_packet_if_t *apif, af_packet_ring_t *ring)
717 af_packet_main_t *apm = &af_packet_main;
721 // FIXME: unmap the memory
722 if (munmap (ring->ring_start_addr, ring->ring_size))
723 vlib_log_warn (apm->log_class,
724 "Host interface %s could not free ring %p of size %u",
725 apif->host_if_name, ring->ring_start_addr,
728 ring->ring_start_addr = 0;
735 af_packet_delete_if (u8 *host_if_name)
737 vnet_main_t *vnm = vnet_get_main ();
738 af_packet_main_t *apm = &af_packet_main;
739 af_packet_if_t *apif;
740 af_packet_queue_t *rx_queue;
741 af_packet_queue_t *tx_queue;
742 af_packet_ring_t *ring;
745 p = mhash_get (&apm->if_index_by_host_if_name, host_if_name);
748 vlib_log_warn (apm->log_class, "Host interface %s does not exist",
750 return VNET_API_ERROR_SYSCALL_ERROR_1;
752 apif = pool_elt_at_index (apm->interfaces, p[0]);
754 /* bring down the interface */
755 vnet_hw_interface_set_flags (vnm, apif->hw_if_index, 0);
758 vec_foreach (rx_queue, apif->rx_queues)
759 af_packet_rx_queue_free (apif, rx_queue);
760 vec_foreach (tx_queue, apif->tx_queues)
761 af_packet_tx_queue_free (apif, tx_queue);
762 vec_foreach (ring, apif->rings)
763 af_packet_ring_free (apif, ring);
765 vec_free (apif->rx_queues);
766 apif->rx_queues = NULL;
767 vec_free (apif->tx_queues);
768 apif->tx_queues = NULL;
769 vec_free (apif->rings);
772 vec_free (apif->host_if_name);
773 apif->host_if_name = NULL;
774 apif->host_if_index = -1;
776 mhash_unset (&apm->if_index_by_host_if_name, host_if_name, p);
778 if (apif->mode != AF_PACKET_IF_MODE_IP)
779 ethernet_delete_interface (vnm, apif->hw_if_index);
781 vnet_delete_hw_interface (vnm, apif->hw_if_index);
783 memset (apif, 0, sizeof (*apif));
784 pool_put (apm->interfaces, apif);
790 af_packet_set_l4_cksum_offload (u32 sw_if_index, u8 set)
797 af_packet_dump_ifs (af_packet_if_detail_t ** out_af_packet_ifs)
799 af_packet_main_t *apm = &af_packet_main;
800 af_packet_if_t *apif;
801 af_packet_if_detail_t *r_af_packet_ifs = NULL;
802 af_packet_if_detail_t *af_packet_if = NULL;
804 pool_foreach (apif, apm->interfaces)
806 vec_add2 (r_af_packet_ifs, af_packet_if, 1);
807 af_packet_if->sw_if_index = apif->sw_if_index;
808 if (apif->host_if_name)
810 clib_memcpy (af_packet_if->host_if_name, apif->host_if_name,
811 MIN (ARRAY_LEN (af_packet_if->host_if_name) - 1,
812 strlen ((const char *) apif->host_if_name)));
816 *out_af_packet_ifs = r_af_packet_ifs;
821 static clib_error_t *
822 af_packet_init (vlib_main_t * vm)
824 af_packet_main_t *apm = &af_packet_main;
825 vlib_thread_main_t *tm = vlib_get_thread_main ();
827 clib_memset (apm, 0, sizeof (af_packet_main_t));
829 mhash_init_vec_string (&apm->if_index_by_host_if_name, sizeof (uword));
831 vec_validate_aligned (apm->rx_buffers, tm->n_vlib_mains - 1,
832 CLIB_CACHE_LINE_BYTES);
834 apm->log_class = vlib_log_register_class ("af_packet", 0);
835 vlib_log_debug (apm->log_class, "initialized");
840 VLIB_INIT_FUNCTION (af_packet_init);
843 * fd.io coding-style-patch-verification: ON
846 * eval: (c-set-style "gnu")