github.com/Andyfoo/golang/x/net@v0.0.0-20190901054642-57c1bf301704/internal/socket/sys_linux.go (about)

     1  // Copyright 2017 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // +build linux,!s390x,!386
     6  
     7  package socket
     8  
     9  import (
    10  	"syscall"
    11  	"unsafe"
    12  )
    13  
    14  func probeProtocolStack() int {
    15  	var p uintptr
    16  	return int(unsafe.Sizeof(p))
    17  }
    18  
    19  func recvmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
    20  	n, _, errno := syscall.Syscall6(sysRECVMMSG, s, uintptr(unsafe.Pointer(&hs[0])), uintptr(len(hs)), uintptr(flags), 0, 0)
    21  	return int(n), errnoErr(errno)
    22  }
    23  
    24  func sendmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
    25  	n, _, errno := syscall.Syscall6(sysSENDMMSG, s, uintptr(unsafe.Pointer(&hs[0])), uintptr(len(hs)), uintptr(flags), 0, 0)
    26  	return int(n), errnoErr(errno)
    27  }