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authorStephen Hemminger <shemminger@osdl.org>2006-03-20 22:59:06 -0800
committerDavid S. Miller <davem@davemloft.net>2006-03-20 22:59:06 -0800
commitcf0f02d04a830c8202e6a8f8bb37acc6c1629a91 (patch)
tree8f3c7af9aee5ea2e1b889c27660e8587307025df /net/bridge/br.c
parent18fdb2b25be37e49b1669b5c394671f8c5b6550f (diff)
[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>
Diffstat (limited to 'net/bridge/br.c')
-rw-r--r--net/bridge/br.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/net/bridge/br.c b/net/bridge/br.c
index 188cc1ac49e..22d806cf40c 100644
--- a/net/bridge/br.c
+++ b/net/bridge/br.c
@@ -19,13 +19,23 @@
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/init.h>
+#include <linux/llc.h>
+#include <net/llc.h>
#include "br_private.h"
int (*br_should_route_hook) (struct sk_buff **pskb) = NULL;
+static struct llc_sap *br_stp_sap;
+
static int __init br_init(void)
{
+ br_stp_sap = llc_sap_open(LLC_SAP_BSPAN, br_stp_rcv);
+ if (!br_stp_sap) {
+ printk(KERN_ERR "bridge: can't register sap for STP\n");
+ return -EBUSY;
+ }
+
br_fdb_init();
#ifdef CONFIG_BRIDGE_NETFILTER
@@ -45,6 +55,8 @@ static int __init br_init(void)
static void __exit br_deinit(void)
{
+ llc_sap_close(br_stp_sap);
+
#ifdef CONFIG_BRIDGE_NETFILTER
br_netfilter_fini();
#endif