Return address in use, if some other kernel code has the SAP.
Propogate out error codes from netfilter registration and unwind.
Signed-off-by: Stephen Hemminger <[EMAIL PROTECTED]>
--- br.orig/net/bridge/br.c
+++ br/net/bridge/br.c
@@ -30,36 +30,44 @@ static struct llc_sap *br_stp_sap;
static int __init br_init(void)
{
+ int err;
+
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;
+ return -EADDRINUSE;
}
br_fdb_init();
-#ifdef CONFIG_BRIDGE_NETFILTER
- if (br_netfilter_init())
- return 1;
-#endif
+ err = br_netfilter_init();
+ if (err)
+ goto err_out1;
+
+ err = register_netdevice_notifier(&br_device_notifier);
+ if (err)
+ goto err_out2;
+
brioctl_set(br_ioctl_deviceless_stub);
br_handle_frame_hook = br_handle_frame;
br_fdb_get_hook = br_fdb_get;
br_fdb_put_hook = br_fdb_put;
- register_netdevice_notifier(&br_device_notifier);
-
return 0;
+
+err_out2:
+ br_netfilter_fini();
+err_out1:
+ llc_sap_put(br_stp_sap);
+ return err;
}
static void __exit br_deinit(void)
{
rcu_assign_pointer(br_stp_sap->rcv_func, NULL);
-#ifdef CONFIG_BRIDGE_NETFILTER
br_netfilter_fini();
-#endif
unregister_netdevice_notifier(&br_device_notifier);
brioctl_set(NULL);
--- br.orig/net/bridge/br_private.h
+++ br/net/bridge/br_private.h
@@ -192,8 +192,13 @@ extern int br_dev_ioctl(struct net_devic
extern int br_ioctl_deviceless_stub(unsigned int cmd, void __user *arg);
/* br_netfilter.c */
+#ifdef CONFIG_BRIDGE_NETFILTER
extern int br_netfilter_init(void);
extern void br_netfilter_fini(void);
+#else
+#define br_netfilter_init() (0)
+#define br_netfilter_fini() do { } while(0)
+#endif
/* br_stp.c */
extern void br_log_state(const struct net_bridge_port *p);
--
-
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