net: hsr: Don't log netdev_err message on unknown prp dst node

If no frames has been exchanged with a node for HSR_NODE_FORGET_TIME, the
node will be deleted from the node_db list. If a frame is sent to the node
after it is deleted, a netdev_err message for each slave interface is
produced. This should not happen with dan nodes because of supervision
frames, but can happen often with san nodes, which clutters the kernel
log. Since the hsr protocol does not support sans, this is only relevant
for the prp protocol.

Signed-off-by: Kristian Overskeid <koverskeid@gmail.com>
Link: https://lore.kernel.org/r/20230309092302.179586-1-koverskeid@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/net/hsr/hsr_framereg.c b/net/hsr/hsr_framereg.c
index 00db74d96583d0f7b33b29697037b979f052c1d5..b77f1189d19d1ff5dc76f4a7345efc7a65918399 100644 (file)
--- a/net/hsr/hsr_framereg.c
+++ b/net/hsr/hsr_framereg.c
@@ -415,7 +415,7 @@ void hsr_addr_subst_dest(struct hsr_node *node_src, struct sk_buff *skb,
        node_dst = find_node_by_addr_A(&port->hsr->node_db,
                                       eth_hdr(skb)->h_dest);
        if (!node_dst) {
-               if (net_ratelimit())
+               if (port->hsr->prot_version != PRP_V1 && net_ratelimit())
                        netdev_err(skb->dev, "%s: Unknown node\n", __func__);
                return;
        }