.examples
.github
alerting
client
config
controller
core
docs
jsonpath
metric
pattern
security
storage
test
util
vendor
github.com
go.etcd.io
golang.org
x
crypto
image
mod
net
bpf
context
icmp
internal
ipv4
batch.go
control.go
control_bsd.go
control_pktinfo.go
control_stub.go
control_unix.go
control_windows.go
control_zos.go
dgramopt.go
doc.go
endpoint.go
genericopt.go
header.go
helper.go
iana.go
icmp.go
icmp_linux.go
icmp_stub.go
packet.go
payload.go
payload_cmsg.go
payload_nocmsg.go
sockopt.go
sockopt_posix.go
sockopt_stub.go
sys_aix.go
sys_asmreq.go
sys_asmreq_stub.go
sys_asmreqn.go
sys_asmreqn_stub.go
sys_bpf.go
sys_bpf_stub.go
sys_bsd.go
sys_darwin.go
sys_dragonfly.go
sys_freebsd.go
sys_linux.go
sys_solaris.go
sys_ssmreq.go
sys_ssmreq_stub.go
sys_stub.go
sys_windows.go
sys_zos.go
zsys_aix_ppc64.go
zsys_darwin.go
zsys_dragonfly.go
zsys_freebsd_386.go
zsys_freebsd_amd64.go
zsys_freebsd_arm.go
zsys_freebsd_arm64.go
zsys_linux_386.go
zsys_linux_amd64.go
zsys_linux_arm.go
zsys_linux_arm64.go
zsys_linux_mips.go
zsys_linux_mips64.go
zsys_linux_mips64le.go
zsys_linux_mipsle.go
zsys_linux_ppc.go
zsys_linux_ppc64.go
zsys_linux_ppc64le.go
zsys_linux_riscv64.go
zsys_linux_s390x.go
zsys_netbsd.go
zsys_openbsd.go
zsys_solaris.go
zsys_zos_s390x.go
ipv6
AUTHORS
CONTRIBUTORS
LICENSE
PATENTS
oauth2
sync
sys
tools
xerrors
google.golang.org
gopkg.in
lukechampine.com
modernc.org
modules.txt
watchdog
web
.dockerignore
.gitattributes
.gitignore
Dockerfile
LICENSE
Makefile
README.md
config.yaml
go.mod
go.sum
main.go
62 lines
3.0 KiB
Go
62 lines
3.0 KiB
Go
// Copyright 2014 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 (
|
|
"net"
|
|
"syscall"
|
|
"unsafe"
|
|
|
|
"golang.org/x/net/internal/iana"
|
|
"golang.org/x/net/internal/socket"
|
|
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
var (
|
|
ctlOpts = [ctlMax]ctlOpt{
|
|
ctlTTL: {unix.IP_TTL, 1, marshalTTL, parseTTL},
|
|
ctlPacketInfo: {unix.IP_PKTINFO, sizeofInetPktinfo, marshalPacketInfo, parsePacketInfo},
|
|
}
|
|
|
|
sockOpts = map[int]*sockOpt{
|
|
ssoTOS: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_TOS, Len: 4}},
|
|
ssoTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_TTL, Len: 4}},
|
|
ssoMulticastTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_MULTICAST_TTL, Len: 4}},
|
|
ssoMulticastInterface: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_MULTICAST_IF, Len: unix.SizeofIPMreqn}, typ: ssoTypeIPMreqn},
|
|
ssoMulticastLoopback: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_MULTICAST_LOOP, Len: 4}},
|
|
ssoReceiveTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_RECVTTL, Len: 4}},
|
|
ssoPacketInfo: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_PKTINFO, Len: 4}},
|
|
ssoHeaderPrepend: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.IP_HDRINCL, Len: 4}},
|
|
ssoICMPFilter: {Option: socket.Option{Level: iana.ProtocolReserved, Name: unix.ICMP_FILTER, Len: sizeofICMPFilter}},
|
|
ssoJoinGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.MCAST_JOIN_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq},
|
|
ssoLeaveGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.MCAST_LEAVE_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq},
|
|
ssoJoinSourceGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.MCAST_JOIN_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
|
|
ssoLeaveSourceGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.MCAST_LEAVE_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
|
|
ssoBlockSourceGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.MCAST_BLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
|
|
ssoUnblockSourceGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: unix.MCAST_UNBLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
|
|
ssoAttachFilter: {Option: socket.Option{Level: unix.SOL_SOCKET, Name: unix.SO_ATTACH_FILTER, Len: unix.SizeofSockFprog}},
|
|
}
|
|
)
|
|
|
|
func (pi *inetPktinfo) setIfindex(i int) {
|
|
pi.Ifindex = int32(i)
|
|
}
|
|
|
|
func (gr *groupReq) setGroup(grp net.IP) {
|
|
sa := (*sockaddrInet)(unsafe.Pointer(&gr.Group))
|
|
sa.Family = syscall.AF_INET
|
|
copy(sa.Addr[:], grp)
|
|
}
|
|
|
|
func (gsr *groupSourceReq) setSourceGroup(grp, src net.IP) {
|
|
sa := (*sockaddrInet)(unsafe.Pointer(&gsr.Group))
|
|
sa.Family = syscall.AF_INET
|
|
copy(sa.Addr[:], grp)
|
|
sa = (*sockaddrInet)(unsafe.Pointer(&gsr.Source))
|
|
sa.Family = syscall.AF_INET
|
|
copy(sa.Addr[:], src)
|
|
}
|