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, 68 s =
format (s,
"Linux PACKET socket interface");
75 s =
format (s,
"Unimplemented...");
91 u32 block_size = apif->tx_req->tp_block_size;
92 u32 frame_size = apif->tx_req->tp_frame_size;
93 u32 frame_num = apif->tx_req->tp_frame_nr;
94 u8 *block_start = apif->tx_ring + block * block_size;
95 u32 tx_frame = apif->next_tx_frame;
96 struct tpacket2_hdr *tph;
97 u32 frame_not_ready = 0;
110 tph = (
struct tpacket2_hdr *) (block_start + tx_frame * frame_size);
113 (tph->tp_status & (TP_STATUS_SEND_REQUEST | TP_STATUS_SENDING)))
124 TPACKET_ALIGN (
sizeof (
struct tpacket2_hdr)) + offset,
131 tph->tp_len = tph->tp_snaplen =
offset;
132 tph->tp_status = TP_STATUS_SEND_REQUEST;
135 tx_frame = (tx_frame + 1) % frame_num;
146 apif->next_tx_frame = tx_frame;
149 MSG_DONTWAIT,
NULL, 0) == -1))
157 AF_PACKET_TX_ERROR_TXRING_FATAL :
158 AF_PACKET_TX_ERROR_TXRING_EAGAIN, n_sent);
166 AF_PACKET_TX_ERROR_FRAME_NOT_READY, frame_not_ready);
186 if (node_index == ~0)
212 int rv, fd = socket (AF_UNIX, SOCK_DGRAM, 0);
228 if ((rv = ioctl (fd, SIOCGIFNAME, &ifr)) < 0)
237 if ((rv = ioctl (fd, SIOCGIFFLAGS, &ifr)) < 0)
247 ifr.ifr_flags |= IFF_UP;
252 ifr.ifr_flags &= ~IFF_UP;
255 if ((rv = ioctl (fd, SIOCSIFFLAGS, &ifr)) < 0)
286 int rv, fd = socket (AF_UNIX, SOCK_DGRAM, 0);
302 if ((rv = ioctl (fd, SIOCGIFNAME, &ifr)) < 0)
305 (
"af_packet_%s ioctl could not retrieve eth name, error: %d",
311 ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
313 if ((rv = ioctl (fd, SIOCSIFHWADDR, &ifr)) < 0)
sll srl srl sll sra u16x4 i
clib_error_t * vnet_hw_interface_set_flags(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
static void vlib_buffer_free(vlib_main_t *vm, u32 *buffers, u32 n_buffers)
Free buffers Frees the entire buffer chain for each buffer.
u8 runtime_data[0]
Function dependent node-runtime data.
static void vlib_error_count(vlib_main_t *vm, uword node_index, uword counter, uword increment)
static u8 * format_af_packet_tx_trace(u8 *s, va_list *args)
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)
static void af_packet_set_interface_next_node(vnet_main_t *vnm, u32 hw_if_index, u32 node_index)
#define VNET_HW_INTERFACE_FLAG_LINK_UP
static clib_error_t * af_packet_set_mac_address_function(struct vnet_hw_interface_t *hi, char *address)
static uword vlib_node_add_next(vlib_main_t *vm, uword node, uword next_node)
VNET_DEVICE_CLASS(af_packet_device_class)
af_packet_if_t * interfaces
#define VLIB_BUFFER_NEXT_PRESENT
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
u16 current_length
Nbytes between current data and the end of this buffer.
static void af_packet_clear_hw_interface_counters(u32 instance)
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
static char * af_packet_tx_func_error_strings[]
static u8 * format_af_packet_device_name(u8 *s, va_list *args)
u32 node_index
Node index.
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)
#define clib_memcpy(a, b, c)
u32 per_interface_next_index
vlib_node_registration_t af_packet_input_node
(constructor) VLIB_REGISTER_NODE (af_packet_input_node)
#define foreach_af_packet_tx_func_error
#define VNET_SW_INTERFACE_FLAG_ADMIN_UP
af_packet_main_t af_packet_main
static word unix_error_is_fatal(word error)
u32 next_buffer
Next buffer for this linked-list of buffers.
static void * vlib_frame_args(vlib_frame_t *f)
Get pointer to frame scalar data.
af_packet_tx_func_error_t
static vlib_main_t * vlib_get_main(void)
vnet_device_class_t af_packet_device_class
template key/value backing page structure
static clib_error_t * af_packet_interface_admin_up_down(vnet_main_t *vnm, u32 hw_if_index, u32 flags)
#define clib_unix_warning(format, args...)
struct clib_bihash_value offset
template key/value backing page structure
#define CLIB_MEMORY_BARRIER()
static uword af_packet_interface_tx(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
u32 flags
buffer flags: VLIB_BUFFER_FREE_LIST_INDEX_MASK: bits used to store free list index, VLIB_BUFFER_IS_TRACED: trace this buffer.
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 u8 * format_af_packet_device(u8 *s, va_list *args)
#define VLIB_DEVICE_TX_FUNCTION_MULTIARCH(dev, fn)