| David K. Bainbridge | 215e024 | 2017-09-05 23:18:24 -0700 | [diff] [blame^] | 1 | // Copyright 2014 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 | package ipv6 |
| 6 | |
| 7 | import "golang.org/x/net/internal/socket" |
| 8 | |
| 9 | // Sticky socket options |
| 10 | const ( |
| 11 | ssoTrafficClass = iota // header field for unicast packet, RFC 3542 |
| 12 | ssoHopLimit // header field for unicast packet, RFC 3493 |
| 13 | ssoMulticastInterface // outbound interface for multicast packet, RFC 3493 |
| 14 | ssoMulticastHopLimit // header field for multicast packet, RFC 3493 |
| 15 | ssoMulticastLoopback // loopback for multicast packet, RFC 3493 |
| 16 | ssoReceiveTrafficClass // header field on received packet, RFC 3542 |
| 17 | ssoReceiveHopLimit // header field on received packet, RFC 2292 or 3542 |
| 18 | ssoReceivePacketInfo // incbound or outbound packet path, RFC 2292 or 3542 |
| 19 | ssoReceivePathMTU // path mtu, RFC 3542 |
| 20 | ssoPathMTU // path mtu, RFC 3542 |
| 21 | ssoChecksum // packet checksum, RFC 2292 or 3542 |
| 22 | ssoICMPFilter // icmp filter, RFC 2292 or 3542 |
| 23 | ssoJoinGroup // any-source multicast, RFC 3493 |
| 24 | ssoLeaveGroup // any-source multicast, RFC 3493 |
| 25 | ssoJoinSourceGroup // source-specific multicast |
| 26 | ssoLeaveSourceGroup // source-specific multicast |
| 27 | ssoBlockSourceGroup // any-source or source-specific multicast |
| 28 | ssoUnblockSourceGroup // any-source or source-specific multicast |
| 29 | ssoAttachFilter // attach BPF for filtering inbound traffic |
| 30 | ) |
| 31 | |
| 32 | // Sticky socket option value types |
| 33 | const ( |
| 34 | ssoTypeIPMreq = iota + 1 |
| 35 | ssoTypeGroupReq |
| 36 | ssoTypeGroupSourceReq |
| 37 | ) |
| 38 | |
| 39 | // A sockOpt represents a binding for sticky socket option. |
| 40 | type sockOpt struct { |
| 41 | socket.Option |
| 42 | typ int // hint for option value type; optional |
| 43 | } |