[PATCH net] net: bridge: Do not offload IGMP/MLD messages
From: Joseph Huang <hidden>
Date: 2025-07-01 19:37:25
Also in:
bridge, lkml
Subsystem:
ethernet bridge, networking [general], the rest · Maintainers:
Nikolay Aleksandrov, Ido Schimmel, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Do not offload IGMP/MLD messages as it could lead to IGMP/MLD Reports
being unintentionally flooded to Hosts. Instead, let the bridge decide
where to send these IGMP/MLD messages.
Fixes: 472111920f1c ("net: bridge: switchdev: allow the TX data plane forwarding to be offloaded")
Signed-off-by: Joseph Huang <redacted>
---
net/bridge/br_switchdev.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/bridge/br_switchdev.c b/net/bridge/br_switchdev.c
index 95d7355a0407..757c34bf5931 100644
--- a/net/bridge/br_switchdev.c
+++ b/net/bridge/br_switchdev.c@@ -18,7 +18,8 @@ static bool nbp_switchdev_can_offload_tx_fwd(const struct net_bridge_port *p, return false; return (p->flags & BR_TX_FWD_OFFLOAD) && - (p->hwdom != BR_INPUT_SKB_CB(skb)->src_hwdom); + (p->hwdom != BR_INPUT_SKB_CB(skb)->src_hwdom) && + !br_multicast_igmp_type(skb); } bool br_switchdev_frame_uses_tx_fwd_offload(struct sk_buff *skb)
--
2.49.0