[BRIDGE]: use llc for receiving STP packets

Use LLC for the receive path of Spanning Tree Protocol packets.
This allows link local multicast packets to be received by
other protocols (if they care), and uses the existing LLC
code to get STP packets back into bridge code.

The bridge multicast address is also checked, so bridges using
other link local multicast addresses are ignored. This allows
for use of different multicast addresses to define separate STP
domains.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 8f10e09f251b..3bc9ad483473 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -217,7 +217,8 @@ extern void br_stp_set_path_cost(struct net_bridge_port *p,
 extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
 
 /* br_stp_bpdu.c */
-extern int br_stp_handle_bpdu(struct sk_buff *skb);
+extern int br_stp_rcv(struct sk_buff *skb, struct net_device *dev,
+                      struct packet_type *pt, struct net_device *orig_dev);
 
 /* br_stp_timer.c */
 extern void br_stp_timer_init(struct net_bridge *br);