selftest/bpf: fix IPV6FR handling in flow dissector

Santucci Pierpaolo · kernel-patches-bot · commit ba012fbece16 · 2020-11-11T03:21:50.000-08:00
&gt;From second fragment on, IPV6FR program must stop the dissection of IPV6
fragmented packet. This is the same approach used for IPV4 fragmentation.

Signed-off-by: Santucci Pierpaolo &lt;santucci@epigenesys.com&gt;
diff --git a/tools/testing/selftests/bpf/progs/bpf_flow.c b/tools/testing/selftests/bpf/progs/bpf_flow.c
@@ -368,6 +368,8 @@ PROG(IPV6FR)(struct __sk_buff *skb)
 		 */
 		if (!(keys->flags & BPF_FLOW_DISSECTOR_F_PARSE_1ST_FRAG))
 			return export_flow_keys(keys, BPF_OK);
+	} else {
+		return export_flow_keys(keys, BPF_OK);
 	}
 
 	return parse_ipv6_proto(skb, fragh->nexthdr);

Original file line number	Diff line number	Diff line change
`@@ -368,6 +368,8 @@ PROG(IPV6FR)(struct __sk_buff *skb)`
`368`	`368`	`*/`
`369`	`369`	`if (!(keys->flags & BPF_FLOW_DISSECTOR_F_PARSE_1ST_FRAG))`
`370`	`370`	`return export_flow_keys(keys, BPF_OK);`
	`371`	`+ } else {`
	`372`	`+ return export_flow_keys(keys, BPF_OK);`
`371`	`373`	`}`
`372`	`374`
`373`	`375`	`return parse_ipv6_proto(skb, fragh->nexthdr);`