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-rw-r--r--vendor/golang.org/x/net/ipv4/bpfopt_linux.go28
1 files changed, 28 insertions, 0 deletions
diff --git a/vendor/golang.org/x/net/ipv4/bpfopt_linux.go b/vendor/golang.org/x/net/ipv4/bpfopt_linux.go
new file mode 100644
index 000000000..e9bbda96e
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/bpfopt_linux.go
@@ -0,0 +1,28 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv4
+
+import (
+ "os"
+ "unsafe"
+
+ "golang.org/x/net/bpf"
+ "golang.org/x/net/internal/netreflect"
+)
+
+// SetBPF attaches a BPF program to the connection.
+//
+// Only supported on Linux.
+func (c *dgramOpt) SetBPF(filter []bpf.RawInstruction) error {
+ s, err := netreflect.PacketSocketOf(c.PacketConn)
+ if err != nil {
+ return err
+ }
+ prog := sysSockFProg{
+ Len: uint16(len(filter)),
+ Filter: (*sysSockFilter)(unsafe.Pointer(&filter[0])),
+ }
+ return os.NewSyscallError("setsockopt", setsockopt(s, sysSOL_SOCKET, sysSO_ATTACH_FILTER, unsafe.Pointer(&prog), uint32(unsafe.Sizeof(prog))))
+}