...ns why this may be useful. O_DIRECT (since Linux 3.4) Create a pipe that performs I/O in "packet" mode. Each write (2) to the pipe is dealt with as a separate packet, and read (…...ns why this may be useful. O_DIRECT (since Linux 3.4) Create a pipe that performs I/O in "packet" mode. Each write (2) to the pipe is dealt with as a separate packet, and read (…...lly developed for usage with IPsec AF_NETLINK Kernel user interface device netlink (7) AF_PACKET Low-level packet interface packet (7) AF_RDS . Reliable Datagram Sockets (RDS) p…...2_t busy_poll_usecs; /* Number of usecs to busy poll */ uint16_t busy_poll_budget; /* Max packets per poll */ uint8_t prefer_busy_poll; /* Boolean preference */ /* pad the struc…...IPTION The bpf () system call performs a range of operations related to extended Berkeley Packet Filters. Extended BPF (or eBPF) is similar to the original ("classic") BPF (cBPF…...of the sending socket. If sendto () is used on a connection-mode ( SOCK_STREAM , SOCK_SEQPACKET ) socket, the arguments dest_addr and addrlen are ignored (and the error EISCONN …...of the sending socket. If sendto () is used on a connection-mode ( SOCK_STREAM , SOCK_SEQPACKET ) socket, the arguments dest_addr and addrlen are ignored (and the error EISCONN …...of the sending socket. If sendto () is used on a connection-mode ( SOCK_STREAM , SOCK_SEQPACKET ) socket, the arguments dest_addr and addrlen are ignored (and the error EISCONN …...ufficient size. See cmsg (3) and ip (7) for more information. The payload of the original packet that caused the error is passed as normal data via msg_iovec . The original dest…...ufficient size. See cmsg (3) and ip (7) for more information. The payload of the original packet that caused the error is passed as normal data via msg_iovec . The original dest…...ufficient size. See cmsg (3) and ip (7) for more information. The payload of the original packet that caused the error is passed as normal data via msg_iovec . The original dest…..._INET6 , see ipv6 (7); for AF_UNIX , see unix (7); for AF_APPLETALK , see ddp (7); for AF_PACKET , see packet (7); for AF_X25 , see x25 (7); and for AF_NETLINK , see netlink (7)…...ls of the system. SEE ALSO ioctl (2), socket (2), getprotoent (3), protocols (5), ip (7), packet (7), socket (7), tcp (7), udp (7), unix (7)...ls of the system. SEE ALSO ioctl (2), socket (2), getprotoent (3), protocols (5), ip (7), packet (7), socket (7), tcp (7), udp (7), unix (7)...n in the meantime by an unrelated network event on a socket, for example an incoming ICMP packet. EXAMPLES The following program uses recvmmsg () to receive multiple messages on…...; SECCOMP_SET_MODE_FILTER The system calls allowed are defined by a pointer to a Berkeley Packet Filter (BPF) passed via args . This argument is a pointer to a struct sock_fprog…...: • There is out-of-band data on a TCP socket (see tcp (7)). • A pseudoterminal master in packet mode has seen a state change on the slave (see ioctl_tty (2)). • A cgroup.events…...: • There is out-of-band data on a TCP socket (see tcp (7)). • A pseudoterminal master in packet mode has seen a state change on the slave (see ioctl_tty (2)). • A cgroup.events…...it useful to employ the TCP_CORK option, described in tcp (7), to minimize the number of packets and to tune performance. Applications may wish to fall back to read (2) and writ…...it useful to employ the TCP_CORK option, described in tcp (7), to minimize the number of packets and to tune performance. Applications may wish to fall back to read (2) and writ…