blob: 92bd109296ca5877a0444fcb3d9f1fb38cb2b2ac [file] [log] [blame]
Damjan Marion83243a02016-02-29 13:09:30 +01001/*
2 *------------------------------------------------------------------
3 * af_packet.c - linux kernel packet interface
4 *
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:
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
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 *------------------------------------------------------------------
18 */
19
20#include <linux/if_ether.h>
21#include <linux/if_packet.h>
Ray Kinsellac855b732017-04-21 12:24:43 +010022#include <dirent.h>
Damjan Marion83243a02016-02-29 13:09:30 +010023
24#include <vlib/vlib.h>
25#include <vlib/unix/unix.h>
26#include <vnet/ip/ip.h>
27#include <vnet/ethernet/ethernet.h>
28
29#include <vnet/devices/af_packet/af_packet.h>
30
31#define AF_PACKET_DEBUG_SOCKET 0
32
33#define AF_PACKET_TX_FRAMES_PER_BLOCK 1024
34#define AF_PACKET_TX_FRAME_SIZE (2048 * 5)
35#define AF_PACKET_TX_BLOCK_NR 1
36#define AF_PACKET_TX_FRAME_NR (AF_PACKET_TX_BLOCK_NR * \
37 AF_PACKET_TX_FRAMES_PER_BLOCK)
38#define AF_PACKET_TX_BLOCK_SIZE (AF_PACKET_TX_FRAME_SIZE * \
39 AF_PACKET_TX_FRAMES_PER_BLOCK)
40
41#define AF_PACKET_RX_FRAMES_PER_BLOCK 1024
42#define AF_PACKET_RX_FRAME_SIZE (2048 * 5)
43#define AF_PACKET_RX_BLOCK_NR 1
44#define AF_PACKET_RX_FRAME_NR (AF_PACKET_RX_BLOCK_NR * \
45 AF_PACKET_RX_FRAMES_PER_BLOCK)
46#define AF_PACKET_RX_BLOCK_SIZE (AF_PACKET_RX_FRAME_SIZE * \
47 AF_PACKET_RX_FRAMES_PER_BLOCK)
48
49#if AF_PACKET_DEBUG_SOCKET == 1
50#define DBG_SOCK(args...) clib_warning(args);
51#else
52#define DBG_SOCK(args...)
53#endif
54
55/*defined in net/if.h but clashes with dpdk headers */
Damjan Marion00a9dca2016-08-17 17:05:46 +020056unsigned int if_nametoindex (const char *ifname);
Damjan Marion83243a02016-02-29 13:09:30 +010057
58typedef struct tpacket_req tpacket_req_t;
59
60static u32
Damjan Marion00a9dca2016-08-17 17:05:46 +020061af_packet_eth_flag_change (vnet_main_t * vnm, vnet_hw_interface_t * hi,
62 u32 flags)
Damjan Marion83243a02016-02-29 13:09:30 +010063{
64 /* nothing for now */
65 return 0;
66}
67
Damjan Marion00a9dca2016-08-17 17:05:46 +020068static clib_error_t *
69af_packet_fd_read_ready (unix_file_t * uf)
Damjan Marion83243a02016-02-29 13:09:30 +010070{
Damjan Marion00a9dca2016-08-17 17:05:46 +020071 af_packet_main_t *apm = &af_packet_main;
Damjan Marioneb743fa2017-03-20 16:34:15 +010072 vnet_main_t *vnm = vnet_get_main ();
Damjan Marion83243a02016-02-29 13:09:30 +010073 u32 idx = uf->private_data;
Damjan Marioneb743fa2017-03-20 16:34:15 +010074 af_packet_if_t *apif = pool_elt_at_index (apm->interfaces, idx);
Damjan Marion83243a02016-02-29 13:09:30 +010075
Damjan Marion00a9dca2016-08-17 17:05:46 +020076 apm->pending_input_bitmap =
77 clib_bitmap_set (apm->pending_input_bitmap, idx, 1);
Damjan Marion83243a02016-02-29 13:09:30 +010078
79 /* Schedule the rx node */
Damjan Marioneb743fa2017-03-20 16:34:15 +010080 vnet_device_input_set_interrupt_pending (vnm, apif->hw_if_index, 0);
Damjan Marion83243a02016-02-29 13:09:30 +010081
82 return 0;
83}
84
85static int
Ray Kinsellac855b732017-04-21 12:24:43 +010086is_bridge (const u8 * host_if_name)
87{
88 u8 *s;
89 DIR *dir = NULL;
90
91 s = format (0, "/sys/class/net/%s/bridge%c", host_if_name, 0);
92 dir = opendir ((char *) s);
93 vec_free (s);
94
95 if (dir)
96 {
97 closedir (dir);
98 return 0;
99 }
100
101 return -1;
102}
103
104static int
105create_packet_v2_sock (int host_if_index, tpacket_req_t * rx_req,
Damjan Marion00a9dca2016-08-17 17:05:46 +0200106 tpacket_req_t * tx_req, int *fd, u8 ** ring)
Damjan Marion83243a02016-02-29 13:09:30 +0100107{
108 int ret, err;
109 struct sockaddr_ll sll;
Damjan Marion83243a02016-02-29 13:09:30 +0100110 int ver = TPACKET_V2;
Damjan Marion00a9dca2016-08-17 17:05:46 +0200111 socklen_t req_sz = sizeof (struct tpacket_req);
Damjan Marion83243a02016-02-29 13:09:30 +0100112 u32 ring_sz = rx_req->tp_block_size * rx_req->tp_block_nr +
Damjan Marion00a9dca2016-08-17 17:05:46 +0200113 tx_req->tp_block_size * tx_req->tp_block_nr;
Damjan Marion83243a02016-02-29 13:09:30 +0100114
Damjan Marion00a9dca2016-08-17 17:05:46 +0200115 if ((*fd = socket (AF_PACKET, SOCK_RAW, htons (ETH_P_ALL))) < 0)
Damjan Marion83243a02016-02-29 13:09:30 +0100116 {
Damjan Marion00a9dca2016-08-17 17:05:46 +0200117 DBG_SOCK ("Failed to create socket");
Damjan Marion83243a02016-02-29 13:09:30 +0100118 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
119 goto error;
120 }
121
Damjan Marion00a9dca2016-08-17 17:05:46 +0200122 if ((err =
123 setsockopt (*fd, SOL_PACKET, PACKET_VERSION, &ver, sizeof (ver))) < 0)
Damjan Marion83243a02016-02-29 13:09:30 +0100124 {
Damjan Marion00a9dca2016-08-17 17:05:46 +0200125 DBG_SOCK ("Failed to set rx packet interface version");
Damjan Marion83243a02016-02-29 13:09:30 +0100126 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
127 goto error;
128 }
129
130 int opt = 1;
Damjan Marion00a9dca2016-08-17 17:05:46 +0200131 if ((err =
132 setsockopt (*fd, SOL_PACKET, PACKET_LOSS, &opt, sizeof (opt))) < 0)
Damjan Marion83243a02016-02-29 13:09:30 +0100133 {
Damjan Marion00a9dca2016-08-17 17:05:46 +0200134 DBG_SOCK ("Failed to set packet tx ring error handling option");
Damjan Marion83243a02016-02-29 13:09:30 +0100135 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
136 goto error;
137 }
138
Damjan Marion00a9dca2016-08-17 17:05:46 +0200139 if ((err =
140 setsockopt (*fd, SOL_PACKET, PACKET_RX_RING, rx_req, req_sz)) < 0)
Damjan Marion83243a02016-02-29 13:09:30 +0100141 {
Damjan Marion00a9dca2016-08-17 17:05:46 +0200142 DBG_SOCK ("Failed to set packet rx ring options");
Damjan Marion83243a02016-02-29 13:09:30 +0100143 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
144 goto error;
145 }
146
Damjan Marion00a9dca2016-08-17 17:05:46 +0200147 if ((err =
148 setsockopt (*fd, SOL_PACKET, PACKET_TX_RING, tx_req, req_sz)) < 0)
Damjan Marion83243a02016-02-29 13:09:30 +0100149 {
Damjan Marion00a9dca2016-08-17 17:05:46 +0200150 DBG_SOCK ("Failed to set packet rx ring options");
Damjan Marion83243a02016-02-29 13:09:30 +0100151 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
152 goto error;
153 }
154
Damjan Marion00a9dca2016-08-17 17:05:46 +0200155 *ring =
156 mmap (NULL, ring_sz, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_LOCKED, *fd,
157 0);
Damjan Marion83243a02016-02-29 13:09:30 +0100158 if (*ring == MAP_FAILED)
159 {
Damjan Marion00a9dca2016-08-17 17:05:46 +0200160 DBG_SOCK ("mmap failure");
Damjan Marion83243a02016-02-29 13:09:30 +0100161 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
162 goto error;
163 }
164
Damjan Marion00a9dca2016-08-17 17:05:46 +0200165 memset (&sll, 0, sizeof (sll));
Damjan Marion83243a02016-02-29 13:09:30 +0100166 sll.sll_family = PF_PACKET;
Damjan Marion00a9dca2016-08-17 17:05:46 +0200167 sll.sll_protocol = htons (ETH_P_ALL);
Damjan Marion83243a02016-02-29 13:09:30 +0100168 sll.sll_ifindex = host_if_index;
169
Damjan Marion00a9dca2016-08-17 17:05:46 +0200170 if ((err = bind (*fd, (struct sockaddr *) &sll, sizeof (sll))) < 0)
Damjan Marion83243a02016-02-29 13:09:30 +0100171 {
Damjan Marion00a9dca2016-08-17 17:05:46 +0200172 DBG_SOCK ("Failed to bind rx packet socket (error %d)", err);
Damjan Marion83243a02016-02-29 13:09:30 +0100173 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
174 goto error;
175 }
176
177 return 0;
178error:
Dave Barach16ad6ae2016-07-28 17:55:30 -0400179 if (*fd >= 0)
Damjan Marion00a9dca2016-08-17 17:05:46 +0200180 close (*fd);
Peter Leidba76f22016-04-08 08:16:31 -0700181 *fd = -1;
Damjan Marion83243a02016-02-29 13:09:30 +0100182 return ret;
183}
184
185int
Damjan Marion00a9dca2016-08-17 17:05:46 +0200186af_packet_create_if (vlib_main_t * vm, u8 * host_if_name, u8 * hw_addr_set,
187 u32 * sw_if_index)
Damjan Marion83243a02016-02-29 13:09:30 +0100188{
Damjan Marion00a9dca2016-08-17 17:05:46 +0200189 af_packet_main_t *apm = &af_packet_main;
Damjan Marion83243a02016-02-29 13:09:30 +0100190 int ret, fd = -1;
Damjan Marion00a9dca2016-08-17 17:05:46 +0200191 struct tpacket_req *rx_req = 0;
192 struct tpacket_req *tx_req = 0;
193 u8 *ring = 0;
194 af_packet_if_t *apif = 0;
Damjan Marion83243a02016-02-29 13:09:30 +0100195 u8 hw_addr[6];
Damjan Marion00a9dca2016-08-17 17:05:46 +0200196 clib_error_t *error;
197 vnet_sw_interface_t *sw;
Mohsin KAZMIcf751ec2017-01-18 11:59:45 +0100198 vlib_thread_main_t *tm = vlib_get_thread_main ();
Damjan Marion00a9dca2016-08-17 17:05:46 +0200199 vnet_main_t *vnm = vnet_get_main ();
200 uword *p;
Damjan Marion83243a02016-02-29 13:09:30 +0100201 uword if_index;
Ivan Kellybfe737a2016-10-07 18:02:43 +0200202 u8 *host_if_name_dup = vec_dup (host_if_name);
Ray Kinsellac855b732017-04-21 12:24:43 +0100203 int host_if_index = -1;
Damjan Marion83243a02016-02-29 13:09:30 +0100204
205 p = mhash_get (&apm->if_index_by_host_if_name, host_if_name);
206 if (p)
207 {
208 return VNET_API_ERROR_SUBIF_ALREADY_EXISTS;
209 }
210
Damjan Marion00a9dca2016-08-17 17:05:46 +0200211 vec_validate (rx_req, 0);
Damjan Marion83243a02016-02-29 13:09:30 +0100212 rx_req->tp_block_size = AF_PACKET_RX_BLOCK_SIZE;
213 rx_req->tp_frame_size = AF_PACKET_RX_FRAME_SIZE;
214 rx_req->tp_block_nr = AF_PACKET_RX_BLOCK_NR;
215 rx_req->tp_frame_nr = AF_PACKET_RX_FRAME_NR;
216
Damjan Marion00a9dca2016-08-17 17:05:46 +0200217 vec_validate (tx_req, 0);
Damjan Marion83243a02016-02-29 13:09:30 +0100218 tx_req->tp_block_size = AF_PACKET_TX_BLOCK_SIZE;
219 tx_req->tp_frame_size = AF_PACKET_TX_FRAME_SIZE;
220 tx_req->tp_block_nr = AF_PACKET_TX_BLOCK_NR;
221 tx_req->tp_frame_nr = AF_PACKET_TX_FRAME_NR;
222
Ray Kinsellac855b732017-04-21 12:24:43 +0100223 host_if_index = if_nametoindex ((const char *) host_if_name);
224
225 if (!host_if_index)
226 {
227 DBG_SOCK ("Wrong host interface name");
228 return VNET_API_ERROR_INVALID_INTERFACE;
229 }
230
231 ret = create_packet_v2_sock (host_if_index, rx_req, tx_req, &fd, &ring);
Damjan Marion83243a02016-02-29 13:09:30 +0100232
233 if (ret != 0)
234 goto error;
235
Ray Kinsellac855b732017-04-21 12:24:43 +0100236 ret = is_bridge (host_if_name);
237
238 if (ret == 0) /* is a bridge, ignore state */
239 host_if_index = -1;
240
Damjan Marion83243a02016-02-29 13:09:30 +0100241 /* So far everything looks good, let's create interface */
Damjan Marion048ee2e2016-03-16 22:59:21 +0100242 pool_get (apm->interfaces, apif);
Damjan Marion83243a02016-02-29 13:09:30 +0100243 if_index = apif - apm->interfaces;
244
Ray Kinsellac855b732017-04-21 12:24:43 +0100245 apif->host_if_index = host_if_index;
Damjan Marion83243a02016-02-29 13:09:30 +0100246 apif->fd = fd;
247 apif->rx_ring = ring;
248 apif->tx_ring = ring + rx_req->tp_block_size * rx_req->tp_block_nr;
249 apif->rx_req = rx_req;
250 apif->tx_req = tx_req;
Ivan Kellybfe737a2016-10-07 18:02:43 +0200251 apif->host_if_name = host_if_name_dup;
Dave Barach13f3c452016-03-29 11:56:41 -0400252 apif->per_interface_next_index = ~0;
Peter Leidba76f22016-04-08 08:16:31 -0700253 apif->next_tx_frame = 0;
254 apif->next_rx_frame = 0;
Damjan Marion83243a02016-02-29 13:09:30 +0100255
Mohsin KAZMIcf751ec2017-01-18 11:59:45 +0100256 if (tm->n_vlib_mains > 1)
Damjan Marion1927da22017-03-27 17:08:20 +0200257 clib_spinlock_init (&apif->lockp);
Mohsin KAZMIcf751ec2017-01-18 11:59:45 +0100258
Damjan Marion83243a02016-02-29 13:09:30 +0100259 {
Damjan Marion00a9dca2016-08-17 17:05:46 +0200260 unix_file_t template = { 0 };
Damjan Marion83243a02016-02-29 13:09:30 +0100261 template.read_function = af_packet_fd_read_ready;
262 template.file_descriptor = fd;
263 template.private_data = if_index;
264 template.flags = UNIX_FILE_EVENT_EDGE_TRIGGERED;
265 apif->unix_file_index = unix_file_add (&unix_main, &template);
266 }
267
268 /*use configured or generate random MAC address */
269 if (hw_addr_set)
Damjan Marion00a9dca2016-08-17 17:05:46 +0200270 clib_memcpy (hw_addr, hw_addr_set, 6);
Damjan Marion83243a02016-02-29 13:09:30 +0100271 else
272 {
Damjan Marion00a9dca2016-08-17 17:05:46 +0200273 f64 now = vlib_time_now (vm);
Damjan Marion83243a02016-02-29 13:09:30 +0100274 u32 rnd;
275 rnd = (u32) (now * 1e6);
276 rnd = random_u32 (&rnd);
277
Damjan Marion00a9dca2016-08-17 17:05:46 +0200278 clib_memcpy (hw_addr + 2, &rnd, sizeof (rnd));
Damjan Marion83243a02016-02-29 13:09:30 +0100279 hw_addr[0] = 2;
280 hw_addr[1] = 0xfe;
281 }
282
Damjan Marion00a9dca2016-08-17 17:05:46 +0200283 error = ethernet_register_interface (vnm, af_packet_device_class.index,
284 if_index, hw_addr, &apif->hw_if_index,
285 af_packet_eth_flag_change);
Damjan Marion83243a02016-02-29 13:09:30 +0100286
287 if (error)
288 {
Damjan Marion00a9dca2016-08-17 17:05:46 +0200289 memset (apif, 0, sizeof (*apif));
290 pool_put (apm->interfaces, apif);
Damjan Marion83243a02016-02-29 13:09:30 +0100291 clib_error_report (error);
292 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
293 goto error;
294 }
295
296 sw = vnet_get_hw_sw_interface (vnm, apif->hw_if_index);
297 apif->sw_if_index = sw->sw_if_index;
Damjan Marion153646e2017-04-05 18:15:45 +0200298 vnet_set_device_input_node (vnm, apif->hw_if_index,
299 af_packet_input_node.index);
300 vnet_device_input_assign_thread (vnm, apif->hw_if_index, 0, /* queue */
Damjan Marioneb743fa2017-03-20 16:34:15 +0100301 ~0 /* any cpu */ );
Damjan Marion153646e2017-04-05 18:15:45 +0200302 vnet_device_input_set_mode (vnm, apif->hw_if_index, 0,
303 VNET_DEVICE_INPUT_MODE_INTERRUPT);
Damjan Marion83243a02016-02-29 13:09:30 +0100304
305 vnet_hw_interface_set_flags (vnm, apif->hw_if_index,
306 VNET_HW_INTERFACE_FLAG_LINK_UP);
307
Ivan Kellybfe737a2016-10-07 18:02:43 +0200308 mhash_set_mem (&apm->if_index_by_host_if_name, host_if_name_dup, &if_index,
309 0);
Pierre Pfister78ea9c22016-05-23 12:51:54 +0100310 if (sw_if_index)
311 *sw_if_index = apif->sw_if_index;
Mohsin KAZMIcf751ec2017-01-18 11:59:45 +0100312
Damjan Marion83243a02016-02-29 13:09:30 +0100313 return 0;
314
315error:
Ivan Kellybfe737a2016-10-07 18:02:43 +0200316 vec_free (host_if_name_dup);
Damjan Marion00a9dca2016-08-17 17:05:46 +0200317 vec_free (rx_req);
318 vec_free (tx_req);
Damjan Marion83243a02016-02-29 13:09:30 +0100319 return ret;
320}
321
Peter Leidba76f22016-04-08 08:16:31 -0700322int
Damjan Marion00a9dca2016-08-17 17:05:46 +0200323af_packet_delete_if (vlib_main_t * vm, u8 * host_if_name)
Peter Leidba76f22016-04-08 08:16:31 -0700324{
Damjan Marion00a9dca2016-08-17 17:05:46 +0200325 vnet_main_t *vnm = vnet_get_main ();
Peter Leidba76f22016-04-08 08:16:31 -0700326 af_packet_main_t *apm = &af_packet_main;
327 af_packet_if_t *apif;
328 uword *p;
329 uword if_index;
330 u32 ring_sz;
331
Damjan Marion00a9dca2016-08-17 17:05:46 +0200332 p = mhash_get (&apm->if_index_by_host_if_name, host_if_name);
333 if (p == NULL)
334 {
335 clib_warning ("Host interface %s does not exist", host_if_name);
336 return VNET_API_ERROR_SYSCALL_ERROR_1;
337 }
338 apif = pool_elt_at_index (apm->interfaces, p[0]);
Peter Leidba76f22016-04-08 08:16:31 -0700339 if_index = apif - apm->interfaces;
340
341 /* bring down the interface */
Damjan Marion00a9dca2016-08-17 17:05:46 +0200342 vnet_hw_interface_set_flags (vnm, apif->hw_if_index, 0);
Peter Leidba76f22016-04-08 08:16:31 -0700343
344 /* clean up */
Damjan Marion00a9dca2016-08-17 17:05:46 +0200345 if (apif->unix_file_index != ~0)
346 {
347 unix_file_del (&unix_main, unix_main.file_pool + apif->unix_file_index);
348 apif->unix_file_index = ~0;
349 }
Eyal Barif298ecf2016-09-19 18:47:39 +0300350 else
351 close (apif->fd);
352
Peter Leidba76f22016-04-08 08:16:31 -0700353 ring_sz = apif->rx_req->tp_block_size * apif->rx_req->tp_block_nr +
Damjan Marion00a9dca2016-08-17 17:05:46 +0200354 apif->tx_req->tp_block_size * apif->tx_req->tp_block_nr;
355 if (munmap (apif->rx_ring, ring_sz))
356 clib_warning ("Host interface %s could not free rx/tx ring",
357 host_if_name);
Peter Leidba76f22016-04-08 08:16:31 -0700358 apif->rx_ring = NULL;
359 apif->tx_ring = NULL;
Peter Leidba76f22016-04-08 08:16:31 -0700360 apif->fd = -1;
361
Damjan Marion00a9dca2016-08-17 17:05:46 +0200362 vec_free (apif->rx_req);
Peter Leidba76f22016-04-08 08:16:31 -0700363 apif->rx_req = NULL;
Damjan Marion00a9dca2016-08-17 17:05:46 +0200364 vec_free (apif->tx_req);
Peter Leidba76f22016-04-08 08:16:31 -0700365 apif->tx_req = NULL;
366
Damjan Marion00a9dca2016-08-17 17:05:46 +0200367 vec_free (apif->host_if_name);
Peter Leidba76f22016-04-08 08:16:31 -0700368 apif->host_if_name = NULL;
Ray Kinsellac855b732017-04-21 12:24:43 +0100369 apif->host_if_index = -1;
Peter Leidba76f22016-04-08 08:16:31 -0700370
Damjan Marion00a9dca2016-08-17 17:05:46 +0200371 mhash_unset (&apm->if_index_by_host_if_name, host_if_name, &if_index);
Peter Leidba76f22016-04-08 08:16:31 -0700372
Damjan Marion00a9dca2016-08-17 17:05:46 +0200373 ethernet_delete_interface (vnm, apif->hw_if_index);
Peter Leidba76f22016-04-08 08:16:31 -0700374
Damjan Marion00a9dca2016-08-17 17:05:46 +0200375 pool_put (apm->interfaces, apif);
Peter Leidba76f22016-04-08 08:16:31 -0700376
377 return 0;
378}
379
Damjan Marion83243a02016-02-29 13:09:30 +0100380static clib_error_t *
381af_packet_init (vlib_main_t * vm)
382{
Damjan Marion00a9dca2016-08-17 17:05:46 +0200383 af_packet_main_t *apm = &af_packet_main;
Damjan Marion553f6bd2016-09-07 11:54:22 +0200384 vlib_thread_main_t *tm = vlib_get_thread_main ();
Damjan Marion83243a02016-02-29 13:09:30 +0100385
386 memset (apm, 0, sizeof (af_packet_main_t));
387
388 mhash_init_vec_string (&apm->if_index_by_host_if_name, sizeof (uword));
389
Damjan Marion553f6bd2016-09-07 11:54:22 +0200390 vec_validate_aligned (apm->rx_buffers, tm->n_vlib_mains - 1,
391 CLIB_CACHE_LINE_BYTES);
392
Damjan Marion83243a02016-02-29 13:09:30 +0100393 return 0;
394}
395
396VLIB_INIT_FUNCTION (af_packet_init);
Damjan Marion00a9dca2016-08-17 17:05:46 +0200397
398/*
399 * fd.io coding-style-patch-verification: ON
400 *
401 * Local Variables:
402 * eval: (c-set-style "gnu")
403 * End:
404 */