github.com/binkynet/BinkyNet@v1.12.1-0.20240421190447-da4e34c20be0/proto_vendor/golang.org/x/net/ipv6/sys_bpf.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
     6  
     7  package ipv6
     8  
     9  import (
    10  	"unsafe"
    11  
    12  	"golang.org/x/net/bpf"
    13  	"golang.org/x/net/internal/socket"
    14  	"golang.org/x/sys/unix"
    15  )
    16  
    17  func (so *sockOpt) setAttachFilter(c *socket.Conn, f []bpf.RawInstruction) error {
    18  	prog := unix.SockFprog{
    19  		Len:    uint16(len(f)),
    20  		Filter: (*unix.SockFilter)(unsafe.Pointer(&f[0])),
    21  	}
    22  	b := (*[unix.SizeofSockFprog]byte)(unsafe.Pointer(&prog))[:unix.SizeofSockFprog]
    23  	return so.Set(c, b)
    24  }