20 #include <linux/if_packet.h> 21 #include <sys/socket.h> 22 #include <sys/ioctl.h> 24 #include <net/if_arp.h> 33 #define foreach_af_packet_tx_func_error \ 34 _(FRAME_NOT_READY, "tx frame not ready") \ 35 _(TXRING_EAGAIN, "tx sendto temporary failure") \ 36 _(TXRING_FATAL, "tx sendto fatal failure") \ 37 _(TXRING_OVERRUN, "tx ring overrun") 41 #define _(f,s) AF_PACKET_TX_ERROR_##f, 54 #ifndef CLIB_MARCH_VARIANT 70 s =
format (s,
"Linux PACKET socket interface");
77 s =
format (s,
"Unimplemented...");
94 u32 block_size = apif->tx_req->tp_block_size;
95 u32 frame_size = apif->tx_req->tp_frame_size;
96 u32 frame_num = apif->tx_req->tp_frame_nr;
97 u8 *block_start = apif->tx_ring + block * block_size;
98 u32 tx_frame = apif->next_tx_frame;
99 struct tpacket2_hdr *tph;
100 u32 frame_not_ready = 0;
111 tph = (
struct tpacket2_hdr *) (block_start + tx_frame * frame_size);
114 (tph->tp_status & (TP_STATUS_SEND_REQUEST | TP_STATUS_SENDING)))
125 TPACKET_ALIGN (
sizeof (
struct tpacket2_hdr)) +
132 tph->tp_len = tph->tp_snaplen =
offset;
133 tph->tp_status = TP_STATUS_SEND_REQUEST;
136 tx_frame = (tx_frame + 1) % frame_num;
147 apif->next_tx_frame = tx_frame;
150 MSG_DONTWAIT, NULL, 0) == -1))
158 AF_PACKET_TX_ERROR_TXRING_FATAL :
159 AF_PACKET_TX_ERROR_TXRING_EAGAIN, n_sent);
167 AF_PACKET_TX_ERROR_FRAME_NOT_READY, frame_not_ready);
174 return frame->n_vectors;
187 if (node_index == ~0)
213 int rv, fd = socket (AF_UNIX, SOCK_DGRAM, 0);
229 if ((rv = ioctl (fd, SIOCGIFNAME, &ifr)) < 0)
232 "af_packet_%s ioctl could not retrieve eth name",
239 if ((rv = ioctl (fd, SIOCGIFFLAGS, &ifr)) < 0)
249 ifr.ifr_flags |= IFF_UP;
254 ifr.ifr_flags &= ~IFF_UP;
257 if ((rv = ioctl (fd, SIOCSIFFLAGS, &ifr)) < 0)
288 int rv, fd = socket (AF_UNIX, SOCK_DGRAM, 0);
304 if ((rv = ioctl (fd, SIOCGIFNAME, &ifr)) < 0)
308 "af_packet_%s ioctl could not retrieve eth name, error: %d",
314 ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
316 if ((rv = ioctl (fd, SIOCSIFHWADDR, &ifr)) < 0)
319 "af_packet_%s ioctl could not set mac, error: %d",
u32 flags
buffer flags: VLIB_BUFFER_FREE_LIST_INDEX_MASK: bits used to store free list index, VLIB_BUFFER_IS_TRACED: trace this buffer.
#define vlib_log_warn(...)
static void vlib_buffer_free(vlib_main_t *vm, u32 *buffers, u32 n_buffers)
Free buffers Frees the entire buffer chain for each buffer.
static void vlib_error_count(vlib_main_t *vm, uword node_index, uword counter, uword increment)
#define clib_memcpy_fast(a, b, c)
static_always_inline void clib_spinlock_unlock_if_init(clib_spinlock_t *p)
static vnet_hw_interface_t * vnet_get_hw_interface(vnet_main_t *vnm, u32 hw_if_index)
u16 current_length
Nbytes between current data and the end of this buffer.
static uword vlib_node_add_next(vlib_main_t *vm, uword node, uword next_node)
#define clib_memcpy(d, s, n)
af_packet_if_t * interfaces
static void af_packet_clear_hw_interface_counters(u32 instance)
#define VNET_DEVICE_CLASS_TX_FN(devclass)
static u8 * format_af_packet_tx_trace(u8 *s, va_list *args)
static char * af_packet_tx_func_error_strings[]
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
af_packet_tx_func_error_t
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
vlib_log_class_t log_class
log class
sll srl srl sll sra u16x4 i
u32 per_interface_next_index
vlib_node_registration_t af_packet_input_node
(constructor) VLIB_REGISTER_NODE (af_packet_input_node)
vlib_main_t vlib_node_runtime_t * node
VNET_DEVICE_CLASS_TX_FN() af_packet_device_class(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
#define foreach_af_packet_tx_func_error
static clib_error_t * af_packet_set_mac_address_function(struct vnet_hw_interface_t *hi, const u8 *old_address, const u8 *address)
static clib_error_t * af_packet_interface_admin_up_down(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
af_packet_main_t af_packet_main
VNET_DEVICE_CLASS(avf_device_class,)
static word unix_error_is_fatal(word error)
static vlib_main_t * vlib_get_main(void)
static u8 * format_af_packet_device(u8 *s, va_list *args)
template key/value backing page structure
u32 next_buffer
Next buffer for this linked-list of buffers.
clib_error_t * vnet_hw_interface_set_flags(vnet_main_t *vnm, u32 hw_if_index, vnet_hw_interface_flags_t flags)
VLIB buffer representation.
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
u8 * format_af_packet_device_name(u8 *s, va_list *args)
struct clib_bihash_value offset
template key/value backing page structure
static clib_error_t * af_packet_subif_add_del_function(vnet_main_t *vnm, u32 hw_if_index, struct vnet_sw_interface_t *st, int is_add)
vlib_main_t vlib_node_runtime_t vlib_frame_t * frame
#define CLIB_MEMORY_BARRIER()
static_always_inline void clib_spinlock_lock_if_init(clib_spinlock_t *p)
static vlib_buffer_t * vlib_get_buffer(vlib_main_t *vm, u32 buffer_index)
Translate buffer index into buffer pointer.
static void af_packet_set_interface_next_node(vnet_main_t *vnm, u32 hw_if_index, u32 node_index)