github.com/graybobo/golang.org-package-offline-cache@v0.0.0-20200626051047-6608995c132f/x/net/ipv6/sys_freebsd.go (about) 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 "runtime" 10 "strings" 11 "syscall" 12 "unsafe" 13 14 "golang.org/x/net/internal/iana" 15 ) 16 17 type sysSockoptLen int32 18 19 var ( 20 ctlOpts = [ctlMax]ctlOpt{ 21 ctlTrafficClass: {sysIPV6_TCLASS, 4, marshalTrafficClass, parseTrafficClass}, 22 ctlHopLimit: {sysIPV6_HOPLIMIT, 4, marshalHopLimit, parseHopLimit}, 23 ctlPacketInfo: {sysIPV6_PKTINFO, sysSizeofInet6Pktinfo, marshalPacketInfo, parsePacketInfo}, 24 ctlNextHop: {sysIPV6_NEXTHOP, sysSizeofSockaddrInet6, marshalNextHop, parseNextHop}, 25 ctlPathMTU: {sysIPV6_PATHMTU, sysSizeofIPv6Mtuinfo, marshalPathMTU, parsePathMTU}, 26 } 27 28 sockOpts = [ssoMax]sockOpt{ 29 ssoTrafficClass: {iana.ProtocolIPv6, sysIPV6_TCLASS, ssoTypeInt}, 30 ssoHopLimit: {iana.ProtocolIPv6, sysIPV6_UNICAST_HOPS, ssoTypeInt}, 31 ssoMulticastInterface: {iana.ProtocolIPv6, sysIPV6_MULTICAST_IF, ssoTypeInterface}, 32 ssoMulticastHopLimit: {iana.ProtocolIPv6, sysIPV6_MULTICAST_HOPS, ssoTypeInt}, 33 ssoMulticastLoopback: {iana.ProtocolIPv6, sysIPV6_MULTICAST_LOOP, ssoTypeInt}, 34 ssoReceiveTrafficClass: {iana.ProtocolIPv6, sysIPV6_RECVTCLASS, ssoTypeInt}, 35 ssoReceiveHopLimit: {iana.ProtocolIPv6, sysIPV6_RECVHOPLIMIT, ssoTypeInt}, 36 ssoReceivePacketInfo: {iana.ProtocolIPv6, sysIPV6_RECVPKTINFO, ssoTypeInt}, 37 ssoReceivePathMTU: {iana.ProtocolIPv6, sysIPV6_RECVPATHMTU, ssoTypeInt}, 38 ssoPathMTU: {iana.ProtocolIPv6, sysIPV6_PATHMTU, ssoTypeMTUInfo}, 39 ssoChecksum: {iana.ProtocolIPv6, sysIPV6_CHECKSUM, ssoTypeInt}, 40 ssoICMPFilter: {iana.ProtocolIPv6ICMP, sysICMP6_FILTER, ssoTypeICMPFilter}, 41 ssoJoinGroup: {iana.ProtocolIPv6, sysMCAST_JOIN_GROUP, ssoTypeGroupReq}, 42 ssoLeaveGroup: {iana.ProtocolIPv6, sysMCAST_LEAVE_GROUP, ssoTypeGroupReq}, 43 ssoJoinSourceGroup: {iana.ProtocolIPv6, sysMCAST_JOIN_SOURCE_GROUP, ssoTypeGroupSourceReq}, 44 ssoLeaveSourceGroup: {iana.ProtocolIPv6, sysMCAST_LEAVE_SOURCE_GROUP, ssoTypeGroupSourceReq}, 45 ssoBlockSourceGroup: {iana.ProtocolIPv6, sysMCAST_BLOCK_SOURCE, ssoTypeGroupSourceReq}, 46 ssoUnblockSourceGroup: {iana.ProtocolIPv6, sysMCAST_UNBLOCK_SOURCE, ssoTypeGroupSourceReq}, 47 } 48 ) 49 50 func init() { 51 if runtime.GOOS == "freebsd" && runtime.GOARCH == "386" { 52 archs, _ := syscall.Sysctl("kern.supported_archs") 53 for _, s := range strings.Fields(archs) { 54 if s == "amd64" { 55 freebsd32o64 = true 56 break 57 } 58 } 59 } 60 } 61 62 func (sa *sysSockaddrInet6) setSockaddr(ip net.IP, i int) { 63 sa.Len = sysSizeofSockaddrInet6 64 sa.Family = syscall.AF_INET6 65 copy(sa.Addr[:], ip) 66 sa.Scope_id = uint32(i) 67 } 68 69 func (pi *sysInet6Pktinfo) setIfindex(i int) { 70 pi.Ifindex = uint32(i) 71 } 72 73 func (mreq *sysIPv6Mreq) setIfindex(i int) { 74 mreq.Interface = uint32(i) 75 } 76 77 func (gr *sysGroupReq) setGroup(grp net.IP) { 78 sa := (*sysSockaddrInet6)(unsafe.Pointer(&gr.Group)) 79 sa.Len = sysSizeofSockaddrInet6 80 sa.Family = syscall.AF_INET6 81 copy(sa.Addr[:], grp) 82 } 83 84 func (gsr *sysGroupSourceReq) setSourceGroup(grp, src net.IP) { 85 sa := (*sysSockaddrInet6)(unsafe.Pointer(&gsr.Group)) 86 sa.Len = sysSizeofSockaddrInet6 87 sa.Family = syscall.AF_INET6 88 copy(sa.Addr[:], grp) 89 sa = (*sysSockaddrInet6)(unsafe.Pointer(&gsr.Source)) 90 sa.Len = sysSizeofSockaddrInet6 91 sa.Family = syscall.AF_INET6 92 copy(sa.Addr[:], src) 93 }