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

Message ID 120c99c1dca64c569f57f8d80225f76c@huawei.com
State Superseded
Headers show
Series [ovs-dev] ofproto-dpif-xlate: Stop forwarding MLD reports to group ports. | expand

Commit Message

XiaoXiong Ding Sept. 29, 2020, 8:07 a.m. UTC 
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@huawei.com>
---
 ofproto/ofproto-dpif-xlate.c | 1 +
 1 file changed, 1 insertion(+)

--
2.14.1.windows.1
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Patch

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