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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 descirptor 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 descirptor becomes readable.

func GetMTU ¶

func GetMTU(name string) (uint32, error)

GetMTU determines the MTU of a network interface device.

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 NonBlockingWrite2 ¶

func NonBlockingWrite2(fd int, b1, b2 []byte) *tcpip.Error

NonBlockingWrite2 writes up to two byte slices 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 unreconigized errnos will be translated to tcpip.ErrInvalidEndpointState (EINVAL). Panics on invalid errnos.