[ovs-dev] [PATCH] ofproto-dpif-xlate: Stop forwarding MLD reports to group ports.

XiaoXiong Ding dingxiaoxiong at huawei.com
Tue Sep 29 07:39:02 UTC 2020


According with rfc4541 section 2.1.1, a snooping switch
should forward membership reports only to ports with
routers attached.The current code violates the RFC
forwarding membership reports to group ports as well.
The same issue doesn't exist with IPv4.

Fixes: 06994f879c ("mcast-snooping: Add Multicast Listener Discovery support")
Signed-off-by: XiaoXiong Ding <dingxiaoxiong at huawei.com>
---
 ofproto/ofproto-dpif-xlate.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ofproto/ofproto-dpif-xlate.c b/ofproto/ofproto-dpif-xlate.c
index e0ede2cab..47571e790 100644
--- a/ofproto/ofproto-dpif-xlate.c
+++ b/ofproto/ofproto-dpif-xlate.c
@@ -3100,6 +3100,7 @@ xlate_normal(struct xlate_ctx *ctx)
                 xlate_report(ctx, OFT_DETAIL, "MLD query, flooding");
                 xlate_normal_flood(ctx, in_xbundle, &xvlan);
             }
+            return;
         } else {
             if (is_ip_local_multicast(flow, wc)) {
                 /* RFC4541: section 2.1.2, item 2: Packets with a dst IP
-- 
2.14.1.windows.1



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