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Fix ProxyArp

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Only handle packets that we are explicitly listening for

Change-Id: I4f3121bbd94568b420eb1c6d15ba73fbcc8690ef
This commit is contained in:
Brian O'Connor 2015-10-08 21:39:53 -07:00 committed by Gerrit Code Review
parent e59ada1542
commit bc865f6a1a
1 changed files with 18 additions and 12 deletions
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30
apps/proxyarp/src/main/java/org/onosproject/proxyarp/ProxyArp.java
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@ -23,6 +23,8 @@ import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.ReferenceCardinality;
import org.onlab.packet.Ethernet;
import org.onlab.packet.ICMP6;
import org.onlab.packet.IPv6;
import org.onosproject.cfg.ComponentConfigService;
import org.onosproject.core.ApplicationId;
import org.onosproject.core.CoreService;
@ -214,31 +216,35 @@ public class ProxyArp {
if (context.isHandled()) {
return;
}
// If IPv6 NDP is disabled, don't handle IPv6 frames.
InboundPacket pkt = context.inPacket();
Ethernet ethPkt = pkt.parsed();
if (ethPkt == null) {
return;
}
if (!ipv6NeighborDiscovery && (ethPkt.getEtherType() == TYPE_IPV6)) {
return;
if (ethPkt.getEtherType() == TYPE_ARP) {
//handle the arp packet.
proxyArpService.handlePacket(context);
} else if (ipv6NeighborDiscovery && ethPkt.getEtherType() == TYPE_IPV6) {
IPv6 ipv6Pkt = (IPv6) ethPkt.getPayload();
if (ipv6Pkt.getNextHeader() == IPv6.PROTOCOL_ICMP6) {
ICMP6 icmp6Pkt = (ICMP6) ipv6Pkt.getPayload();
if (icmp6Pkt.getIcmpType() == NEIGHBOR_SOLICITATION ||
icmp6Pkt.getIcmpType() == NEIGHBOR_ADVERTISEMENT) {
// handle ICMPv6 solicitations and advertisements
proxyArpService.handlePacket(context);
}
}
}
// FIXME why were we listening to IPv4 frames at all?
// Do not ARP for multicast packets. Let mfwd handle them.
if (ethPkt.getEtherType() == Ethernet.TYPE_IPV4) {
if (ethPkt.getDestinationMAC().isMulticast()) {
return;
}
}
if (ethPkt.getEtherType() != TYPE_ARP && ethPkt.getEtherType() != TYPE_IPV6) {
return;
}
//handle the arp packet.
proxyArpService.handlePacket(context);
}
}
}