bridge: Make br_is_nd_neigh_msg() accept pointer to "const struct sk_buff"

JIRA: https://issues.redhat.com/browse/RHEL-75595

commit a1942da
Author: Ted Chen <[email protected]>
Date:   Sat Jan 4 16:38:46 2025 +0800

    bridge: Make br_is_nd_neigh_msg() accept pointer to "const struct sk_buff"

    The skb_buff struct in br_is_nd_neigh_msg() is never modified. Mark it as
    const.

    Signed-off-by: Ted Chen <[email protected]>
    Acked-by: Nikolay Aleksandrov <[email protected]>
    Link: https://patch.msgid.link/[email protected]
    Signed-off-by: Paolo Abeni <[email protected]>

Signed-off-by: Mohammad Heib <[email protected]>

Author: mohammadheib

net/bridge/br_arp_nd_proxy.c

@@ -229,7 +229,7 @@ void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br,
 #endif
 
 #if IS_ENABLED(CONFIG_IPV6)
-struct nd_msg *br_is_nd_neigh_msg(struct sk_buff *skb, struct nd_msg *msg)
+struct nd_msg *br_is_nd_neigh_msg(const struct sk_buff *skb, struct nd_msg *msg)
 {
 	struct nd_msg *m;
 

net/bridge/br_private.h

@@ -2299,6 +2299,6 @@ void br_do_proxy_suppress_arp(struct sk_buff *skb, struct net_bridge *br,
 			      u16 vid, struct net_bridge_port *p);
 void br_do_suppress_nd(struct sk_buff *skb, struct net_bridge *br,
 		       u16 vid, struct net_bridge_port *p, struct nd_msg *msg);
-struct nd_msg *br_is_nd_neigh_msg(struct sk_buff *skb, struct nd_msg *m);
+struct nd_msg *br_is_nd_neigh_msg(const struct sk_buff *skb, struct nd_msg *m);
 bool br_is_neigh_suppress_enabled(const struct net_bridge_port *p, u16 vid);
 #endif