diff options
| author | gVisor bot <gvisor-bot@google.com> | 2020-03-11 11:02:04 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-03-11 11:02:04 -0700 |
| commit | 2c2622b9428672de8032e1ff3c28283327ba158e (patch) | |
| tree | a72c79b88f35773b9f2030b08128f72297be5946 /pkg/tcpip/stack/nic.go | |
| parent | 2aa9514a06a5e34894e606d508ac2df53b082c74 (diff) | |
| parent | 1e8c0bcedb265d3149e5d2ab1181628d013539c4 (diff) | |
Merge pull request #1975 from nybidari:iptables
PiperOrigin-RevId: 300362789
Diffstat (limited to 'pkg/tcpip/stack/nic.go')
| -rw-r--r-- | pkg/tcpip/stack/nic.go | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/pkg/tcpip/stack/nic.go b/pkg/tcpip/stack/nic.go index cd9202aed..3cd5fec71 100644 --- a/pkg/tcpip/stack/nic.go +++ b/pkg/tcpip/stack/nic.go @@ -25,6 +25,7 @@ import ( "gvisor.dev/gvisor/pkg/tcpip" "gvisor.dev/gvisor/pkg/tcpip/buffer" "gvisor.dev/gvisor/pkg/tcpip/header" + "gvisor.dev/gvisor/pkg/tcpip/iptables" ) var ipv4BroadcastAddr = tcpip.ProtocolAddress{ @@ -1116,6 +1117,7 @@ func (n *NIC) isInGroup(addr tcpip.Address) bool { func handlePacket(protocol tcpip.NetworkProtocolNumber, dst, src tcpip.Address, localLinkAddr, remotelinkAddr tcpip.LinkAddress, ref *referencedNetworkEndpoint, pkt tcpip.PacketBuffer) { r := makeRoute(protocol, dst, src, localLinkAddr, ref, false /* handleLocal */, false /* multicastLoop */) r.RemoteLinkAddress = remotelinkAddr + ref.ep.HandlePacket(&r, pkt) ref.decRef() } @@ -1186,6 +1188,16 @@ func (n *NIC) DeliverNetworkPacket(linkEP LinkEndpoint, remote, local tcpip.Link n.stack.stats.IP.InvalidSourceAddressesReceived.Increment() return } + + // TODO(gvisor.dev/issue/170): Not supporting iptables for IPv6 yet. + if protocol == header.IPv4ProtocolNumber { + ipt := n.stack.IPTables() + if ok := ipt.Check(iptables.Prerouting, pkt); !ok { + // iptables is telling us to drop the packet. + return + } + } + if ref := n.getRef(protocol, dst); ref != nil { handlePacket(protocol, dst, src, linkEP.LinkAddress(), remote, ref, pkt) return |