20 #include <linux/if_ether.h> 21 #include <linux/if_packet.h> 22 #include <sys/ioctl.h> 26 #include <sys/types.h> 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) 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) 80 "sysfs write failed to change MTU: %U",
83 return VNET_API_ERROR_SYSCALL_ERROR_1;
113 s =
format (0,
"/sys/class/net/%s/bridge%c", host_if_name, 0);
114 dir = opendir ((
char *) s);
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;
138 if ((*fd = socket (AF_PACKET, SOCK_RAW, htons (ETH_P_ALL))) < 0)
141 "Failed to create AF_PACKET socket: %s (errno %d)",
142 strerror (errno), errno);
143 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
149 sll.sll_family = PF_PACKET;
150 sll.sll_protocol = htons (ETH_P_ALL);
151 sll.sll_ifindex = host_if_index;
152 if (bind (*fd, (
struct sockaddr *) &sll,
sizeof (sll)) < 0)
155 "Failed to bind rx packet socket: %s (errno %d)",
156 strerror (errno), errno);
157 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
161 if (setsockopt (*fd, SOL_PACKET, PACKET_VERSION, &ver,
sizeof (ver)) < 0)
164 "Failed to set rx packet interface version: %s (errno %d)",
165 strerror (errno), errno);
166 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
171 if (setsockopt (*fd, SOL_PACKET, PACKET_LOSS, &opt,
sizeof (opt)) < 0)
174 "Failed to set packet tx ring error handling option: %s (errno %d)",
175 strerror (errno), errno);
176 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
180 if (setsockopt (*fd, SOL_PACKET, PACKET_RX_RING, rx_req, req_sz) < 0)
183 "Failed to set packet rx ring options: %s (errno %d)",
184 strerror (errno), errno);
185 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
189 if (setsockopt (*fd, SOL_PACKET, PACKET_TX_RING, tx_req, req_sz) < 0)
192 "Failed to set packet tx ring options: %s (errno %d)",
193 strerror (errno), errno);
194 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
199 mmap (NULL, ring_sz, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_LOCKED, *fd,
201 if (*ring == MAP_FAILED)
204 strerror (errno), errno);
205 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
224 int ret, fd = -1, fd2 = -1;
225 struct tpacket_req *rx_req = 0;
226 struct tpacket_req *tx_req = 0;
238 u8 *host_if_name_dup = 0;
239 int host_if_index = -1;
246 return VNET_API_ERROR_IF_ALREADY_EXISTS;
249 host_if_name_dup =
vec_dup (host_if_name);
267 if ((fd2 = socket (AF_UNIX, SOCK_DGRAM, 0)) < 0)
270 "Failed to create AF_UNIX socket: %s (errno %d)",
271 strerror (errno), errno);
272 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
276 clib_memcpy (ifr.ifr_name, (
const char *) host_if_name,
278 if (ioctl (fd2, SIOCGIFINDEX, &ifr) < 0)
281 "Failed to retrieve the interface (%s) index: %s (errno %d)",
282 host_if_name, strerror (errno), errno);
283 ret = VNET_API_ERROR_INVALID_INTERFACE;
287 host_if_index = ifr.ifr_ifindex;
288 if (ioctl (fd2, SIOCGIFFLAGS, &ifr) < 0)
291 "Failed to get the active flag: %s (errno %d)",
292 strerror (errno), errno);
293 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
297 if (!(ifr.ifr_flags & IFF_UP))
299 ifr.ifr_flags |= IFF_UP;
300 if (ioctl (fd2, SIOCSIFFLAGS, &ifr) < 0)
303 "Failed to set the active flag: %s (errno %d)",
304 strerror (errno), errno);
305 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
333 apif->
tx_ring = ring + rx_req->tp_block_size * rx_req->tp_block_nr;
347 template.file_descriptor = fd;
348 template.private_data = if_index;
362 rnd = (
u32) (now * 1e6);
381 ret = VNET_API_ERROR_SYSCALL_ERROR_1;
435 return VNET_API_ERROR_SYSCALL_ERROR_1;
453 ring_sz = apif->
rx_req->tp_block_size * apif->
rx_req->tp_block_nr +
454 apif->
tx_req->tp_block_size * apif->
tx_req->tp_block_nr;
455 if (munmap (apif->
rx_ring, ring_sz))
457 "Host interface %s could not free rx/tx ring",
490 return VNET_API_ERROR_INVALID_INTERFACE;
511 vec_add2 (r_af_packet_ifs, af_packet_if, 1);
512 af_packet_if->sw_if_index = apif->sw_if_index;
513 if (apif->host_if_name)
515 clib_memcpy (af_packet_if->host_if_name, apif->host_if_name,
516 MIN (ARRAY_LEN (af_packet_if->host_if_name) - 1,
517 strlen ((const char *) apif->host_if_name)));
522 *out_af_packet_ifs = r_af_packet_ifs;
vlib_log_class_t vlib_log_register_class(char *class, char *subclass)
#define vec_validate(V, I)
Make sure vector is long enough for given index (no header, unspecified alignment) ...
#define UNIX_FILE_EVENT_EDGE_TRIGGERED
u8 * format_clib_error(u8 *s, va_list *va)
static void clib_file_del(clib_file_main_t *um, clib_file_t *f)
#define vlib_log_warn(...)
vl_api_wireguard_peer_flags_t flags
uword * pending_input_bitmap
void ethernet_delete_interface(vnet_main_t *vnm, u32 hw_if_index)
int af_packet_set_l4_cksum_offload(vlib_main_t *vm, u32 sw_if_index, u8 set)
vnet_main_t * vnet_get_main(void)
static vnet_hw_interface_t * vnet_get_sup_hw_interface(vnet_main_t *vnm, u32 sw_if_index)
#define AF_PACKET_TX_BLOCK_NR
uword mhash_unset(mhash_t *h, void *key, uword *old_value)
clib_memset(h->entries, 0, sizeof(h->entries[0]) *entries)
static f64 vlib_time_now(vlib_main_t *vm)
struct tpacket_req * tx_req
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)
#define AF_PACKET_RX_FRAME_NR
static void mhash_init_vec_string(mhash_t *h, uword n_value_bytes)
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. ...
struct tpacket_req * rx_req
#define vec_validate_aligned(V, I, A)
Make sure vector is long enough for given index (no header, specified alignment)
#define pool_get(P, E)
Allocate an object E from a pool P (unspecified alignment).
clib_error_t * clib_sysfs_write(char *file_name, char *fmt,...)
clib_file_function_t * read_function
static vnet_sw_interface_t * vnet_get_hw_sw_interface(vnet_main_t *vnm, u32 hw_if_index)
#define clib_memcpy(d, s, n)
af_packet_if_t * interfaces
#define AF_PACKET_TX_BLOCK_SIZE
#define pool_foreach(VAR, POOL, BODY)
Iterate through pool.
#define VLIB_INIT_FUNCTION(x)
static_always_inline void vnet_device_input_set_interrupt_pending(vnet_main_t *vnm, u32 hw_if_index, u16 queue_id)
vnet_hw_interface_flags_t flags
#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
#define vlib_log_debug(...)
static void clib_spinlock_init(clib_spinlock_t *p)
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
format_function_t format_af_packet_device_name
uword mhash_set_mem(mhash_t *h, void *key, uword *new_value, uword *old_value)
#define pool_put(P, E)
Free an object E in pool P.
#define vec_dup(V)
Return copy of vector (no header, no alignment)
#define AF_PACKET_RX_BLOCK_NR
vlib_log_class_t log_class
log class
struct tpacket_req tpacket_req_t
#define vec_free(V)
Free vector's memory (no header).
#define AF_PACKET_RX_BLOCK_SIZE
#define ETHERNET_INTERFACE_FLAG_MTU
u32 per_interface_next_index
vlib_node_registration_t af_packet_input_node
(constructor) VLIB_REGISTER_NODE (af_packet_input_node)
af_packet_main_t af_packet_main
void vnet_hw_interface_assign_rx_thread(vnet_main_t *vnm, u32 hw_if_index, u16 queue_id, uword thread_index)
static uword * mhash_get(mhash_t *h, const void *key)
static uword clib_file_add(clib_file_main_t *um, clib_file_t *template)
mhash_t if_index_by_host_if_name
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)
#define AF_PACKET_TX_FRAME_SIZE
static int create_packet_v2_sock(int host_if_index, tpacket_req_t *rx_req, tpacket_req_t *tx_req, int *fd, u8 **ring)
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
clib_error_t * ethernet_register_interface(vnet_main_t *vnm, u32 dev_class_index, u32 dev_instance, const u8 *address, u32 *hw_if_index_return, ethernet_flag_change_function_t flag_change)
clib_error_t * vnet_hw_interface_set_flags(vnet_main_t *vnm, u32 hw_if_index, vnet_hw_interface_flags_t flags)
#define AF_PACKET_RX_FRAME_SIZE
#define clib_error_free(e)
int vnet_hw_interface_unassign_rx_thread(vnet_main_t *vnm, u32 hw_if_index, u16 queue_id)
static u32 random_u32(u32 *seed)
32-bit random number generator
static vlib_thread_main_t * vlib_get_thread_main()
static clib_error_t * af_packet_init(vlib_main_t *vm)
#define vlib_log_err(...)
static int is_bridge(const u8 *host_if_name)
int vnet_hw_interface_set_rx_mode(vnet_main_t *vnm, u32 hw_if_index, u16 queue_id, vnet_hw_interface_rx_mode mode)
static u32 af_packet_eth_flag_change(vnet_main_t *vnm, vnet_hw_interface_t *hi, u32 flags)
int af_packet_create_if(vlib_main_t *vm, u8 *host_if_name, u8 *hw_addr_set, u32 *sw_if_index)
#define CLIB_CACHE_LINE_BYTES
static void vnet_hw_interface_set_input_node(vnet_main_t *vnm, u32 hw_if_index, u32 node_index)
#define AF_PACKET_TX_FRAME_NR
vl_api_interface_index_t sw_if_index
int af_packet_delete_if(vlib_main_t *vm, u8 *host_if_name)