72 	int fd, val;  in sock_fanout_open()  local
74 	fd = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_IP));  in sock_fanout_open()
75 	if (fd < 0) {  in sock_fanout_open()
82 	if (setsockopt(fd, SOL_PACKET, PACKET_FANOUT, &val, sizeof(val))) {  in sock_fanout_open()
83 		if (close(fd)) {  in sock_fanout_open()
90 	pair_udp_setfilter(fd);  in sock_fanout_open()
91 	return fd;  in sock_fanout_open()
94 static char *sock_fanout_open_ring(int fd)  in sock_fanout_open_ring()  argument
105 	if (setsockopt(fd, SOL_PACKET, PACKET_VERSION, (void *) &val,  in sock_fanout_open_ring()
110 	if (setsockopt(fd, SOL_PACKET, PACKET_RX_RING, (void *) &req,  in sock_fanout_open_ring()
117 		    PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);  in sock_fanout_open_ring()
126 static int sock_fanout_read_ring(int fd, void *ring)  in sock_fanout_read_ring()  argument