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

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2177256

commit 28e8cab
Author: Kristian Overskeid <koverskeid@gmail.com>
Date:   Tue Mar 7 14:32:29 2023 +0100

    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>
    Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: Felix Maurer <fmaurer@redhat.com>

Author: fmaurer-rh

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 (net_ratelimit() && port->hsr->prot_version != PRP_V1)
 			netdev_err(skb->dev, "%s: Unknown node\n", __func__);
 		return;
 	}