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func BlockingPoll ¶

func BlockingPoll(fds *PollEvent, nfds int, timeout *syscall.Timespec) (int, syscall.Errno)

BlockingPoll on amd64/arm64 makes the ppoll() syscall while calling the version of entersyscall that relinquishes the P so that other Gs can run. This is meant to be called in cases when the syscall is expected to block. On non amd64/arm64 platforms it just forwards to the ppoll() system call.

func BlockingRead ¶

func BlockingRead(fd int, b []byte) (int, *tcpip.Error)

BlockingRead reads from a file descriptor that is set up as non-blocking. If no data is available, it will block in a poll() syscall until the file descriptor becomes readable.

func BlockingReadv ¶

func BlockingReadv(fd int, iovecs []syscall.Iovec) (int, *tcpip.Error)

BlockingReadv reads from a file descriptor that is set up as non-blocking and stores the data in a list of iovecs buffers. If no data is available, it will block in a poll() syscall until the file descriptor becomes readable.

func BlockingRecvMMsg ¶

func BlockingRecvMMsg(fd int, msgHdrs []MMsgHdr) (int, *tcpip.Error)

BlockingRecvMMsg reads from a file descriptor that is set up as non-blocking and stores the received messages in a slice of MMsgHdr structures. If no data is available, it will block in a poll() syscall until the file descriptor becomes readable.

func GetMTU ¶

func GetMTU(name string) (uint32, error)

GetMTU determines the MTU of a network interface device.

func NonBlockingSendMMsg ¶

func NonBlockingSendMMsg(fd int, msgHdrs []MMsgHdr) (int, *tcpip.Error)

NonBlockingSendMMsg sends multiple messages on a socket.

func NonBlockingWrite ¶

func NonBlockingWrite(fd int, buf []byte) *tcpip.Error

NonBlockingWrite writes the given buffer to a file descriptor. It fails if partial data is written.

func NonBlockingWriteIovec ¶

func NonBlockingWriteIovec(fd int, iovec []syscall.Iovec) *tcpip.Error

NonBlockingWriteIovec writes iovec to a file descriptor in a single syscall. It fails if partial data is written.

func TranslateErrno ¶

func TranslateErrno(e syscall.Errno) *tcpip.Error

TranslateErrno translate an errno from the syscall package into a *tcpip.Error.

Valid, but unrecognized errnos will be translated to tcpip.ErrInvalidEndpointState (EINVAL).