sys_linux.go (3924B)
1 // Copyright 2013 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 ( 8 "net" 9 "syscall" 10 "unsafe" 11 12 "golang.org/x/net/internal/iana" 13 "golang.org/x/net/internal/socket" 14 15 "golang.org/x/sys/unix" 16 ) 17 18 var ( 19 ctlOpts = [ctlMax]ctlOpt{ 20 ctlTrafficClass: {unix.IPV6_TCLASS, 4, marshalTrafficClass, parseTrafficClass}, 21 ctlHopLimit: {unix.IPV6_HOPLIMIT, 4, marshalHopLimit, parseHopLimit}, 22 ctlPacketInfo: {unix.IPV6_PKTINFO, sizeofInet6Pktinfo, marshalPacketInfo, parsePacketInfo}, 23 ctlPathMTU: {unix.IPV6_PATHMTU, sizeofIPv6Mtuinfo, marshalPathMTU, parsePathMTU}, 24 } 25 26 sockOpts = map[int]*sockOpt{ 27 ssoTrafficClass: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: unix.IPV6_TCLASS, Len: 4}}, 28 ssoHopLimit: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: unix.IPV6_UNICAST_HOPS, Len: 4}}, 29 ssoMulticastInterface: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: unix.IPV6_MULTICAST_IF, Len: 4}}, 30 ssoMulticastHopLimit: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: unix.IPV6_MULTICAST_HOPS, Len: 4}}, 31 ssoMulticastLoopback: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: unix.IPV6_MULTICAST_LOOP, Len: 4}}, 32 ssoReceiveTrafficClass: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: unix.IPV6_RECVTCLASS, Len: 4}}, 33 ssoReceiveHopLimit: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: unix.IPV6_RECVHOPLIMIT, Len: 4}}, 34 ssoReceivePacketInfo: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: unix.IPV6_RECVPKTINFO, Len: 4}}, 35 ssoReceivePathMTU: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: unix.IPV6_RECVPATHMTU, Len: 4}}, 36 ssoPathMTU: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: unix.IPV6_PATHMTU, Len: sizeofIPv6Mtuinfo}}, 37 ssoChecksum: {Option: socket.Option{Level: iana.ProtocolReserved, Name: unix.IPV6_CHECKSUM, Len: 4}}, 38 ssoICMPFilter: {Option: socket.Option{Level: iana.ProtocolIPv6ICMP, Name: unix.ICMPV6_FILTER, Len: sizeofICMPv6Filter}}, 39 ssoJoinGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: unix.MCAST_JOIN_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq}, 40 ssoLeaveGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: unix.MCAST_LEAVE_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq}, 41 ssoJoinSourceGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: unix.MCAST_JOIN_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq}, 42 ssoLeaveSourceGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: unix.MCAST_LEAVE_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq}, 43 ssoBlockSourceGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: unix.MCAST_BLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq}, 44 ssoUnblockSourceGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: unix.MCAST_UNBLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq}, 45 ssoAttachFilter: {Option: socket.Option{Level: unix.SOL_SOCKET, Name: unix.SO_ATTACH_FILTER, Len: unix.SizeofSockFprog}}, 46 } 47 ) 48 49 func (sa *sockaddrInet6) setSockaddr(ip net.IP, i int) { 50 sa.Family = syscall.AF_INET6 51 copy(sa.Addr[:], ip) 52 sa.Scope_id = uint32(i) 53 } 54 55 func (pi *inet6Pktinfo) setIfindex(i int) { 56 pi.Ifindex = int32(i) 57 } 58 59 func (mreq *ipv6Mreq) setIfindex(i int) { 60 mreq.Ifindex = int32(i) 61 } 62 63 func (gr *groupReq) setGroup(grp net.IP) { 64 sa := (*sockaddrInet6)(unsafe.Pointer(&gr.Group)) 65 sa.Family = syscall.AF_INET6 66 copy(sa.Addr[:], grp) 67 } 68 69 func (gsr *groupSourceReq) setSourceGroup(grp, src net.IP) { 70 sa := (*sockaddrInet6)(unsafe.Pointer(&gsr.Group)) 71 sa.Family = syscall.AF_INET6 72 copy(sa.Addr[:], grp) 73 sa = (*sockaddrInet6)(unsafe.Pointer(&gsr.Source)) 74 sa.Family = syscall.AF_INET6 75 copy(sa.Addr[:], src) 76 }