FD.io VPP  v19.01.3-6-g70449b9b9
Vector Packet Processing
af_packet.c
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1 /*
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>
22 #include <sys/ioctl.h>
23 #include <net/if.h>
24 #include <dirent.h>
25 #include <sys/stat.h>
26 #include <sys/types.h>
27 #include <fcntl.h>
28 
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/ethernet/ethernet.h>
34 
36 
38 
39 #define AF_PACKET_TX_FRAMES_PER_BLOCK 1024
40 #define AF_PACKET_TX_FRAME_SIZE (2048 * 5)
41 #define AF_PACKET_TX_BLOCK_NR 1
42 #define AF_PACKET_TX_FRAME_NR (AF_PACKET_TX_BLOCK_NR * \
43  AF_PACKET_TX_FRAMES_PER_BLOCK)
44 #define AF_PACKET_TX_BLOCK_SIZE (AF_PACKET_TX_FRAME_SIZE * \
45  AF_PACKET_TX_FRAMES_PER_BLOCK)
46 
47 #define AF_PACKET_RX_FRAMES_PER_BLOCK 1024
48 #define AF_PACKET_RX_FRAME_SIZE (2048 * 5)
49 #define AF_PACKET_RX_BLOCK_NR 1
50 #define AF_PACKET_RX_FRAME_NR (AF_PACKET_RX_BLOCK_NR * \
51  AF_PACKET_RX_FRAMES_PER_BLOCK)
52 #define AF_PACKET_RX_BLOCK_SIZE (AF_PACKET_RX_FRAME_SIZE * \
53  AF_PACKET_RX_FRAMES_PER_BLOCK)
54 
55 /*defined in net/if.h but clashes with dpdk headers */
56 unsigned int if_nametoindex (const char *ifname);
57 
58 typedef struct tpacket_req tpacket_req_t;
59 
60 static u32
62  u32 flags)
63 {
64  clib_error_t *error;
65  u8 *s;
67  af_packet_if_t *apif =
69 
71  {
72  s = format (0, "/sys/class/net/%s/mtu%c", apif->host_if_name, 0);
73 
74  error = clib_sysfs_write ((char *) s, "%d", hi->max_packet_bytes);
75  vec_free (s);
76 
77  if (error)
78  {
79  vlib_log_err (apm->log_class,
80  "sysfs write failed to change MTU: %U",
81  format_clib_error, error);
82  clib_error_free (error);
83  return VNET_API_ERROR_SYSCALL_ERROR_1;
84  }
85  }
86 
87  return 0;
88 }
89 
90 static clib_error_t *
92 {
94  vnet_main_t *vnm = vnet_get_main ();
95  u32 idx = uf->private_data;
96  af_packet_if_t *apif = pool_elt_at_index (apm->interfaces, idx);
97 
100 
101  /* Schedule the rx node */
103 
104  return 0;
105 }
106 
107 static int
108 is_bridge (const u8 * host_if_name)
109 {
110  u8 *s;
111  DIR *dir = NULL;
112 
113  s = format (0, "/sys/class/net/%s/bridge%c", host_if_name, 0);
114  dir = opendir ((char *) s);
115  vec_free (s);
116 
117  if (dir)
118  {
119  closedir (dir);
120  return 0;
121  }
122 
123  return -1;
124 }
125 
126 static int
127 create_packet_v2_sock (int host_if_index, tpacket_req_t * rx_req,
128  tpacket_req_t * tx_req, int *fd, u8 ** ring)
129 {
131  int ret, err;
132  struct sockaddr_ll sll;
133  int ver = TPACKET_V2;
134  socklen_t req_sz = sizeof (struct tpacket_req);
135  u32 ring_sz = rx_req->tp_block_size * rx_req->tp_block_nr +
136  tx_req->tp_block_size * tx_req->tp_block_nr;
137 
138  if ((*fd = socket (AF_PACKET, SOCK_RAW, htons (ETH_P_ALL))) < 0)
139  {
140  vlib_log_debug (apm->log_class, "Failed to create socket");
141  ret = VNET_API_ERROR_SYSCALL_ERROR_1;
142  goto error;
143  }
144 
145  /* bind before rx ring is cfged so we don't receive packets from other interfaces */
146  clib_memset (&sll, 0, sizeof (sll));
147  sll.sll_family = PF_PACKET;
148  sll.sll_protocol = htons (ETH_P_ALL);
149  sll.sll_ifindex = host_if_index;
150  if ((err = bind (*fd, (struct sockaddr *) &sll, sizeof (sll))) < 0)
151  {
153  "Failed to bind rx packet socket (error %d)", err);
154  ret = VNET_API_ERROR_SYSCALL_ERROR_1;
155  goto error;
156  }
157 
158  if ((err =
159  setsockopt (*fd, SOL_PACKET, PACKET_VERSION, &ver, sizeof (ver))) < 0)
160  {
162  "Failed to set rx packet interface version");
163  ret = VNET_API_ERROR_SYSCALL_ERROR_1;
164  goto error;
165  }
166 
167  int opt = 1;
168  if ((err =
169  setsockopt (*fd, SOL_PACKET, PACKET_LOSS, &opt, sizeof (opt))) < 0)
170  {
172  "Failed to set packet tx ring error handling option");
173  ret = VNET_API_ERROR_SYSCALL_ERROR_1;
174  goto error;
175  }
176 
177  if ((err =
178  setsockopt (*fd, SOL_PACKET, PACKET_RX_RING, rx_req, req_sz)) < 0)
179  {
180  vlib_log_debug (apm->log_class, "Failed to set packet rx ring options");
181  ret = VNET_API_ERROR_SYSCALL_ERROR_1;
182  goto error;
183  }
184 
185  if ((err =
186  setsockopt (*fd, SOL_PACKET, PACKET_TX_RING, tx_req, req_sz)) < 0)
187  {
188  vlib_log_debug (apm->log_class, "Failed to set packet tx ring options");
189  ret = VNET_API_ERROR_SYSCALL_ERROR_1;
190  goto error;
191  }
192 
193  *ring =
194  mmap (NULL, ring_sz, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_LOCKED, *fd,
195  0);
196  if (*ring == MAP_FAILED)
197  {
198  vlib_log_debug (apm->log_class, "mmap failure");
199  ret = VNET_API_ERROR_SYSCALL_ERROR_1;
200  goto error;
201  }
202 
203  return 0;
204 error:
205  if (*fd >= 0)
206  close (*fd);
207  *fd = -1;
208  return ret;
209 }
210 
211 int
212 af_packet_create_if (vlib_main_t * vm, u8 * host_if_name, u8 * hw_addr_set,
213  u32 * sw_if_index)
214 {
216  int ret, fd = -1, fd2 = -1;
217  struct tpacket_req *rx_req = 0;
218  struct tpacket_req *tx_req = 0;
219  struct ifreq ifr;
220  u8 *ring = 0;
221  af_packet_if_t *apif = 0;
222  u8 hw_addr[6];
223  clib_error_t *error;
227  vnet_main_t *vnm = vnet_get_main ();
228  uword *p;
229  uword if_index;
230  u8 *host_if_name_dup = vec_dup (host_if_name);
231  int host_if_index = -1;
232 
233  p = mhash_get (&apm->if_index_by_host_if_name, host_if_name);
234  if (p)
235  {
236  apif = vec_elt_at_index (apm->interfaces, p[0]);
237  *sw_if_index = apif->sw_if_index;
238  return VNET_API_ERROR_IF_ALREADY_EXISTS;
239  }
240 
241  vec_validate (rx_req, 0);
242  rx_req->tp_block_size = AF_PACKET_RX_BLOCK_SIZE;
243  rx_req->tp_frame_size = AF_PACKET_RX_FRAME_SIZE;
244  rx_req->tp_block_nr = AF_PACKET_RX_BLOCK_NR;
245  rx_req->tp_frame_nr = AF_PACKET_RX_FRAME_NR;
246 
247  vec_validate (tx_req, 0);
248  tx_req->tp_block_size = AF_PACKET_TX_BLOCK_SIZE;
249  tx_req->tp_frame_size = AF_PACKET_TX_FRAME_SIZE;
250  tx_req->tp_block_nr = AF_PACKET_TX_BLOCK_NR;
251  tx_req->tp_frame_nr = AF_PACKET_TX_FRAME_NR;
252 
253  /*
254  * make sure host side of interface is 'UP' before binding AF_PACKET
255  * socket on it.
256  */
257  if ((fd2 = socket (AF_UNIX, SOCK_DGRAM, 0)) < 0)
258  {
259  vlib_log_debug (apm->log_class, "Failed to create socket");
260  ret = VNET_API_ERROR_SYSCALL_ERROR_1;
261  goto error;
262  }
263 
264  clib_memcpy (ifr.ifr_name, (const char *) host_if_name,
265  vec_len (host_if_name));
266  if ((ret = ioctl (fd2, SIOCGIFINDEX, &ifr)) < 0)
267  {
268  vlib_log_debug (apm->log_class, "af_packet_create error: %d", ret);
269  close (fd2);
270  return VNET_API_ERROR_INVALID_INTERFACE;
271  }
272 
273  host_if_index = ifr.ifr_ifindex;
274  if ((ret = ioctl (fd2, SIOCGIFFLAGS, &ifr)) < 0)
275  {
276  vlib_log_warn (apm->log_class, "af_packet_create error: %d", ret);
277  goto error;
278  }
279 
280  if (!(ifr.ifr_flags & IFF_UP))
281  {
282  ifr.ifr_flags |= IFF_UP;
283  if ((ret = ioctl (fd2, SIOCSIFFLAGS, &ifr)) < 0)
284  {
285  vlib_log_warn (apm->log_class, "af_packet_create error: %d", ret);
286  goto error;
287  }
288  }
289 
290  if (fd2 > -1)
291  close (fd2);
292 
293  ret = create_packet_v2_sock (host_if_index, rx_req, tx_req, &fd, &ring);
294 
295  if (ret != 0)
296  goto error;
297 
298  ret = is_bridge (host_if_name);
299 
300  if (ret == 0) /* is a bridge, ignore state */
301  host_if_index = -1;
302 
303  /* So far everything looks good, let's create interface */
304  pool_get (apm->interfaces, apif);
305  if_index = apif - apm->interfaces;
306 
307  apif->host_if_index = host_if_index;
308  apif->fd = fd;
309  apif->rx_ring = ring;
310  apif->tx_ring = ring + rx_req->tp_block_size * rx_req->tp_block_nr;
311  apif->rx_req = rx_req;
312  apif->tx_req = tx_req;
313  apif->host_if_name = host_if_name_dup;
314  apif->per_interface_next_index = ~0;
315  apif->next_tx_frame = 0;
316  apif->next_rx_frame = 0;
317 
318  if (tm->n_vlib_mains > 1)
319  clib_spinlock_init (&apif->lockp);
320 
321  {
322  clib_file_t template = { 0 };
324  template.file_descriptor = fd;
325  template.private_data = if_index;
327  template.description = format (0, "%U", format_af_packet_device_name,
328  if_index);
329  apif->clib_file_index = clib_file_add (&file_main, &template);
330  }
331 
332  /*use configured or generate random MAC address */
333  if (hw_addr_set)
334  clib_memcpy (hw_addr, hw_addr_set, 6);
335  else
336  {
337  f64 now = vlib_time_now (vm);
338  u32 rnd;
339  rnd = (u32) (now * 1e6);
340  rnd = random_u32 (&rnd);
341 
342  clib_memcpy (hw_addr + 2, &rnd, sizeof (rnd));
343  hw_addr[0] = 2;
344  hw_addr[1] = 0xfe;
345  }
346 
348  if_index, hw_addr, &apif->hw_if_index,
350 
351  if (error)
352  {
353  clib_memset (apif, 0, sizeof (*apif));
354  pool_put (apm->interfaces, apif);
355  vlib_log_err (apm->log_class, "Unable to register interface: %U",
356  format_clib_error, error);
357  clib_error_free (error);
358  ret = VNET_API_ERROR_SYSCALL_ERROR_1;
359  goto error;
360  }
361 
362  sw = vnet_get_hw_sw_interface (vnm, apif->hw_if_index);
363  hw = vnet_get_hw_interface (vnm, apif->hw_if_index);
364  apif->sw_if_index = sw->sw_if_index;
366  af_packet_input_node.index);
367 
368  vnet_hw_interface_assign_rx_thread (vnm, apif->hw_if_index, 0, /* queue */
369  ~0 /* any cpu */ );
370 
374 
377 
378  mhash_set_mem (&apm->if_index_by_host_if_name, host_if_name_dup, &if_index,
379  0);
380  if (sw_if_index)
381  *sw_if_index = apif->sw_if_index;
382 
383  return 0;
384 
385 error:
386  if (fd2 > -1)
387  close (fd2);
388  vec_free (host_if_name_dup);
389  vec_free (rx_req);
390  vec_free (tx_req);
391  return ret;
392 }
393 
394 int
396 {
397  vnet_main_t *vnm = vnet_get_main ();
399  af_packet_if_t *apif;
400  uword *p;
401  uword if_index;
402  u32 ring_sz;
403 
404  p = mhash_get (&apm->if_index_by_host_if_name, host_if_name);
405  if (p == NULL)
406  {
407  vlib_log_warn (apm->log_class, "Host interface %s does not exist",
408  host_if_name);
409  return VNET_API_ERROR_SYSCALL_ERROR_1;
410  }
411  apif = pool_elt_at_index (apm->interfaces, p[0]);
412  if_index = apif - apm->interfaces;
413 
414  /* bring down the interface */
417 
418  /* clean up */
419  if (apif->clib_file_index != ~0)
420  {
422  apif->clib_file_index = ~0;
423  }
424  else
425  close (apif->fd);
426 
427  ring_sz = apif->rx_req->tp_block_size * apif->rx_req->tp_block_nr +
428  apif->tx_req->tp_block_size * apif->tx_req->tp_block_nr;
429  if (munmap (apif->rx_ring, ring_sz))
430  vlib_log_warn (apm->log_class,
431  "Host interface %s could not free rx/tx ring",
432  host_if_name);
433  apif->rx_ring = NULL;
434  apif->tx_ring = NULL;
435  apif->fd = -1;
436 
437  vec_free (apif->rx_req);
438  apif->rx_req = NULL;
439  vec_free (apif->tx_req);
440  apif->tx_req = NULL;
441 
442  vec_free (apif->host_if_name);
443  apif->host_if_name = NULL;
444  apif->host_if_index = -1;
445 
446  mhash_unset (&apm->if_index_by_host_if_name, host_if_name, &if_index);
447 
449 
450  pool_put (apm->interfaces, apif);
451 
452  return 0;
453 }
454 
455 int
457 {
458  vnet_main_t *vnm = vnet_get_main ();
460 
461  hw = vnet_get_sup_hw_interface (vnm, sw_if_index);
462 
463  if (hw->dev_class_index != af_packet_device_class.index)
464  return VNET_API_ERROR_INVALID_INTERFACE;
465 
466  if (set)
468  else
470 
471  return 0;
472 }
473 
474 int
476 {
478  af_packet_if_t *apif;
479  af_packet_if_detail_t *r_af_packet_ifs = NULL;
480  af_packet_if_detail_t *af_packet_if = NULL;
481 
482  vec_foreach (apif, apm->interfaces)
483  {
484  vec_add2 (r_af_packet_ifs, af_packet_if, 1);
485  af_packet_if->sw_if_index = apif->sw_if_index;
486  if (apif->host_if_name)
487  {
488  clib_memcpy (af_packet_if->host_if_name, apif->host_if_name,
489  MIN (ARRAY_LEN (af_packet_if->host_if_name) - 1,
490  strlen ((const char *) apif->host_if_name)));
491  }
492  }
493 
494  *out_af_packet_ifs = r_af_packet_ifs;
495 
496  return 0;
497 }
498 
499 static clib_error_t *
501 {
504 
505  clib_memset (apm, 0, sizeof (af_packet_main_t));
506 
508 
511 
512  apm->log_class = vlib_log_register_class ("af_packet", 0);
513  vlib_log_debug (apm->log_class, "initialized");
514 
515  return 0;
516 }
517 
519 
520 /*
521  * fd.io coding-style-patch-verification: ON
522  *
523  * Local Variables:
524  * eval: (c-set-style "gnu")
525  * End:
526  */
vlib_log_class_t vlib_log_register_class(char *class, char *subclass)
Definition: log.c:227
u32 ** rx_buffers
Definition: af_packet.h:61
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
Definition: vec.h:439
#define UNIX_FILE_EVENT_EDGE_TRIGGERED
Definition: file.h:58
vmrglw vmrglh hi
u8 * format_clib_error(u8 *s, va_list *va)
Definition: error.c:191
static void clib_file_del(clib_file_main_t *um, clib_file_t *f)
Definition: file.h:109
u32 flags
Definition: vhost_user.h:115
#define vlib_log_warn(...)
Definition: log.h:51
uword * pending_input_bitmap
Definition: af_packet.h:58
void ethernet_delete_interface(vnet_main_t *vnm, u32 hw_if_index)
Definition: interface.c:323
int af_packet_set_l4_cksum_offload(vlib_main_t *vm, u32 sw_if_index, u8 set)
Definition: af_packet.c:456
vnet_main_t * vnet_get_main(void)
Definition: misc.c:47
static vnet_hw_interface_t * vnet_get_sup_hw_interface(vnet_main_t *vnm, u32 sw_if_index)
#define AF_PACKET_TX_BLOCK_NR
Definition: af_packet.c:41
#define NULL
Definition: clib.h:58
uword mhash_unset(mhash_t *h, void *key, uword *old_value)
Definition: mhash.c:353
clib_memset(h->entries, 0, sizeof(h->entries[0]) *entries)
static f64 vlib_time_now(vlib_main_t *vm)
Definition: main.h:232
struct tpacket_req * tx_req
Definition: af_packet.h:38
static vnet_hw_interface_t * vnet_get_hw_interface(vnet_main_t *vnm, u32 hw_if_index)
int af_packet_dump_ifs(af_packet_if_detail_t **out_af_packet_ifs)
Definition: af_packet.c:475
#define AF_PACKET_RX_FRAME_NR
Definition: af_packet.c:50
#define vec_add2(V, P, N)
Add N elements to end of vector V, return pointer to new elements in P.
Definition: vec.h:564
static void mhash_init_vec_string(mhash_t *h, uword n_value_bytes)
Definition: mhash.h:84
static uword * clib_bitmap_set(uword *ai, uword i, uword value)
Sets the ith bit of a bitmap to new_value Removes trailing zeros from the bitmap. ...
Definition: bitmap.h:167
u8 * format(u8 *s, const char *fmt,...)
Definition: format.c:419
struct tpacket_req * rx_req
Definition: af_packet.h:37
#define vec_validate_aligned(V, I, A)
Make sure vector is long enough for given index (no header, specified alignment)
Definition: vec.h:450
#define pool_get(P, E)
Allocate an object E from a pool P (unspecified alignment).
Definition: pool.h:236
clib_error_t * clib_sysfs_write(char *file_name, char *fmt,...)
Definition: sysfs.c:26
unsigned char u8
Definition: types.h:56
clib_file_function_t * read_function
Definition: file.h:67
double f64
Definition: types.h:142
static vnet_sw_interface_t * vnet_get_hw_sw_interface(vnet_main_t *vnm, u32 hw_if_index)
#define clib_memcpy(d, s, n)
Definition: string.h:180
u8 * host_if_name
Definition: af_packet.h:34
clib_file_t * file_pool
Definition: file.h:88
af_packet_if_t * interfaces
Definition: af_packet.h:55
uword flags
Definition: clib_error.h:29
#define AF_PACKET_TX_BLOCK_SIZE
Definition: af_packet.c:44
clib_spinlock_t lockp
Definition: af_packet.h:33
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:163
u32 sw_if_index
Definition: vxlan_gbp.api:37
u32 next_rx_frame
Definition: af_packet.h:45
static_always_inline void vnet_device_input_set_interrupt_pending(vnet_main_t *vnm, u32 hw_if_index, u16 queue_id)
Definition: devices.h:136
vnet_hw_interface_flags_t flags
Definition: interface.h:516
#define vec_elt_at_index(v, i)
Get vector value at index i checking that i is in bounds.
clib_file_main_t file_main
Definition: main.c:63
unsigned int u32
Definition: types.h:88
#define vlib_log_debug(...)
Definition: log.h:54
#define MIN(x, y)
Definition: node.h:31
static void clib_spinlock_init(clib_spinlock_t *p)
Definition: lock.h:57
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
Definition: pool.h:511
format_function_t format_af_packet_device_name
Definition: af_packet.h:81
uword mhash_set_mem(mhash_t *h, void *key, uword *new_value, uword *old_value)
Definition: mhash.c:271
#define pool_put(P, E)
Free an object E in pool P.
Definition: pool.h:286
#define vec_dup(V)
Return copy of vector (no header, no alignment)
Definition: vec.h:375
#define AF_PACKET_RX_BLOCK_NR
Definition: af_packet.c:49
vlib_log_class_t log_class
log class
Definition: af_packet.h:67
struct tpacket_req tpacket_req_t
Definition: af_packet.c:58
u32 next_tx_frame
Definition: af_packet.h:46
vlib_main_t * vm
Definition: buffer.c:301
#define vec_free(V)
Free vector&#39;s memory (no header).
Definition: vec.h:341
#define AF_PACKET_RX_BLOCK_SIZE
Definition: af_packet.c:52
#define ETHERNET_INTERFACE_FLAG_MTU
Definition: ethernet.h:179
u32 per_interface_next_index
Definition: af_packet.h:48
#define ARRAY_LEN(x)
Definition: clib.h:62
vlib_node_registration_t af_packet_input_node
(constructor) VLIB_REGISTER_NODE (af_packet_input_node)
Definition: node.c:369
int host_if_index
Definition: af_packet.h:35
u32 clib_file_index
Definition: af_packet.h:43
af_packet_main_t af_packet_main
Definition: af_packet.c:37
void vnet_hw_interface_assign_rx_thread(vnet_main_t *vnm, u32 hw_if_index, u16 queue_id, uword thread_index)
Definition: devices.c:139
static uword * mhash_get(mhash_t *h, const void *key)
Definition: mhash.h:110
static uword clib_file_add(clib_file_main_t *um, clib_file_t *template)
Definition: file.h:96
clib_error_t * ethernet_register_interface(vnet_main_t *vnm, u32 dev_class_index, u32 dev_instance, u8 *address, u32 *hw_if_index_return, ethernet_flag_change_function_t flag_change)
Definition: interface.c:277
mhash_t if_index_by_host_if_name
Definition: af_packet.h:64
unsigned int if_nametoindex(const char *ifname)
vnet_device_class_t af_packet_device_class
static clib_error_t * af_packet_fd_read_ready(clib_file_t *uf)
Definition: af_packet.c:91
#define AF_PACKET_TX_FRAME_SIZE
Definition: af_packet.c:40
static int create_packet_v2_sock(int host_if_index, tpacket_req_t *rx_req, tpacket_req_t *tx_req, int *fd, u8 **ring)
Definition: af_packet.c:127
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
clib_error_t * vnet_hw_interface_set_flags(vnet_main_t *vnm, u32 hw_if_index, vnet_hw_interface_flags_t flags)
Definition: interface.c:504
u64 uword
Definition: types.h:112
#define AF_PACKET_RX_FRAME_SIZE
Definition: af_packet.c:48
#define clib_error_free(e)
Definition: error.h:86
int vnet_hw_interface_unassign_rx_thread(vnet_main_t *vnm, u32 hw_if_index, u16 queue_id)
Definition: devices.c:188
static u32 random_u32(u32 *seed)
32-bit random number generator
Definition: random.h:69
static vlib_thread_main_t * vlib_get_thread_main()
Definition: global_funcs.h:32
#define vec_foreach(var, vec)
Vector iterator.
uword private_data
Definition: file.h:64
static clib_error_t * af_packet_init(vlib_main_t *vm)
Definition: af_packet.c:500
#define vlib_log_err(...)
Definition: log.h:50
static int is_bridge(const u8 *host_if_name)
Definition: af_packet.c:108
Definition: file.h:51
int vnet_hw_interface_set_rx_mode(vnet_main_t *vnm, u32 hw_if_index, u16 queue_id, vnet_hw_interface_rx_mode mode)
Definition: devices.c:253
static u32 af_packet_eth_flag_change(vnet_main_t *vnm, vnet_hw_interface_t *hi, u32 flags)
Definition: af_packet.c:61
int af_packet_create_if(vlib_main_t *vm, u8 *host_if_name, u8 *hw_addr_set, u32 *sw_if_index)
Definition: af_packet.c:212
#define CLIB_CACHE_LINE_BYTES
Definition: cache.h:59
static void vnet_hw_interface_set_input_node(vnet_main_t *vnm, u32 hw_if_index, u32 node_index)
Definition: devices.h:79
#define AF_PACKET_TX_FRAME_NR
Definition: af_packet.c:42
int af_packet_delete_if(vlib_main_t *vm, u8 *host_if_name)
Definition: af_packet.c:395