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26 lines
611 B
Go
26 lines
611 B
Go
// Copyright 2017 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build linux
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// +build linux
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package ipv4
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import (
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"unsafe"
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"golang.org/x/net/bpf"
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"golang.org/x/net/internal/socket"
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"golang.org/x/sys/unix"
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)
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func (so *sockOpt) setAttachFilter(c *socket.Conn, f []bpf.RawInstruction) error {
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prog := unix.SockFprog{
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Len: uint16(len(f)),
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Filter: (*unix.SockFilter)(unsafe.Pointer(&f[0])),
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}
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b := (*[unix.SizeofSockFprog]byte)(unsafe.Pointer(&prog))[:unix.SizeofSockFprog]
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return so.Set(c, b)
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}
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