If dst, hop-by-hop or routing extension headers are present determine
length of the options and skip over them in flow dissection.
Signed-off-by: Tom Herbert <t...@herbertland.com>
---
net/core/flow_dissector.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c
index 1818cdc..22e4dff 100644
--- a/net/core/flow_dissector.c
+++ b/net/core/flow_dissector.c
@@ -327,6 +327,7 @@ mpls:
return false;
}
+ip_proto_again:
switch (ip_proto) {
case IPPROTO_GRE: {
struct gre_hdr {
@@ -383,6 +384,22 @@ mpls:
}
goto again;
}
+ case NEXTHDR_HOP:
+ case NEXTHDR_ROUTING:
+ case NEXTHDR_DEST: {
+ u8 _opthdr[2], *opthdr;
+
+ if (proto != htons(ETH_P_IPV6))
+ break;
+
+ opthdr = __skb_header_pointer(skb, nhoff, sizeof(_opthdr),
+ data, hlen, &_opthdr);
+
+ ip_proto = _opthdr[0];
+ nhoff += (_opthdr[1] + 1) << 3;
+
+ goto ip_proto_again;
+ }
case IPPROTO_IPIP:
proto = htons(ETH_P_IP);
goto ip;
--
1.8.1
--
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