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Date: Thu, 3 Jul 2008 19:04:44 +0200 (MEST)
From: Patrick McHardy <kaber@...sh.net>
To: netdev@...r.kernel.org
Cc: shemminger@...tta.com, Patrick McHardy <kaber@...sh.net>,
davem@...emloft.net
Subject: bridge 02/06: Use STP demux
bridge: Use STP demux
Use the STP demux layer for receiving STP PDUs instead of directly
registering with LLC.
Signed-off-by: Patrick McHardy <kaber@...sh.net>
---
commit 85ecc2934a05203a4f6372cd8f0b132c2d1f2f97
tree 331543d774aa6897e5902576b337515cfe70eb9c
parent 6c0be0e52a154f1991c221a6f60c6b9be71a10c8
author Patrick McHardy <kaber@...sh.net> Thu, 03 Jul 2008 18:06:07 +0200
committer Patrick McHardy <kaber@...sh.net> Thu, 03 Jul 2008 18:06:07 +0200
net/bridge/Kconfig | 1 +
net/bridge/br.c | 16 +++++++++-------
net/bridge/br_private.h | 5 +++--
net/bridge/br_stp_bpdu.c | 12 +++---------
4 files changed, 16 insertions(+), 18 deletions(-)
diff --git a/net/bridge/Kconfig b/net/bridge/Kconfig
index 12265af..e143ca6 100644
--- a/net/bridge/Kconfig
+++ b/net/bridge/Kconfig
@@ -5,6 +5,7 @@
config BRIDGE
tristate "802.1d Ethernet Bridging"
select LLC
+ select STP
---help---
If you say Y here, then your Linux box will be able to act as an
Ethernet bridge, which means that the different Ethernet segments it
diff --git a/net/bridge/br.c b/net/bridge/br.c
index cede010..573acdf 100644
--- a/net/bridge/br.c
+++ b/net/bridge/br.c
@@ -18,21 +18,24 @@
#include <linux/init.h>
#include <linux/llc.h>
#include <net/llc.h>
+#include <net/stp.h>
#include "br_private.h"
int (*br_should_route_hook)(struct sk_buff *skb);
-static struct llc_sap *br_stp_sap;
+static const struct stp_proto br_stp_proto = {
+ .rcv = br_stp_rcv,
+};
static int __init br_init(void)
{
int err;
- br_stp_sap = llc_sap_open(LLC_SAP_BSPAN, br_stp_rcv);
- if (!br_stp_sap) {
+ err = stp_proto_register(&br_stp_proto);
+ if (err < 0) {
printk(KERN_ERR "bridge: can't register sap for STP\n");
- return -EADDRINUSE;
+ return err;
}
err = br_fdb_init();
@@ -65,13 +68,13 @@ err_out2:
err_out1:
br_fdb_fini();
err_out:
- llc_sap_put(br_stp_sap);
+ stp_proto_unregister(&br_stp_proto);
return err;
}
static void __exit br_deinit(void)
{
- rcu_assign_pointer(br_stp_sap->rcv_func, NULL);
+ stp_proto_unregister(&br_stp_proto);
br_netlink_fini();
unregister_netdevice_notifier(&br_device_notifier);
@@ -82,7 +85,6 @@ static void __exit br_deinit(void)
synchronize_net();
br_netfilter_fini();
- llc_sap_put(br_stp_sap);
br_fdb_get_hook = NULL;
br_fdb_put_hook = NULL;
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 8593c9f..815ed38 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -226,8 +226,9 @@ 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_rcv(struct sk_buff *skb, struct net_device *dev,
- struct packet_type *pt, struct net_device *orig_dev);
+struct stp_proto;
+extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
+ struct net_device *dev);
/* br_stp_timer.c */
extern void br_stp_timer_init(struct net_bridge *br);
diff --git a/net/bridge/br_stp_bpdu.c b/net/bridge/br_stp_bpdu.c
index 9dc2de6..9964761 100644
--- a/net/bridge/br_stp_bpdu.c
+++ b/net/bridge/br_stp_bpdu.c
@@ -18,6 +18,7 @@
#include <net/net_namespace.h>
#include <net/llc.h>
#include <net/llc_pdu.h>
+#include <net/stp.h>
#include <asm/unaligned.h>
#include "br_private.h"
@@ -131,10 +132,9 @@ void br_send_tcn_bpdu(struct net_bridge_port *p)
*
* NO locks, but rcu_read_lock (preempt_disabled)
*/
-int br_stp_rcv(struct sk_buff *skb, struct net_device *dev,
- struct packet_type *pt, struct net_device *orig_dev)
+void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
+ struct net_device *dev)
{
- const struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb);
const unsigned char *dest = eth_hdr(skb)->h_dest;
struct net_bridge_port *p = rcu_dereference(dev->br_port);
struct net_bridge *br;
@@ -146,11 +146,6 @@ int br_stp_rcv(struct sk_buff *skb, struct net_device *dev,
if (!p)
goto err;
- if (pdu->ssap != LLC_SAP_BSPAN
- || pdu->dsap != LLC_SAP_BSPAN
- || pdu->ctrl_1 != LLC_PDU_TYPE_U)
- goto err;
-
if (!pskb_may_pull(skb, 4))
goto err;
@@ -224,5 +219,4 @@ int br_stp_rcv(struct sk_buff *skb, struct net_device *dev,
spin_unlock(&br->lock);
err:
kfree_skb(skb);
- return 0;
}
--
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