[VLAN]: Clean up initialization code
- move module init/exit functions to end of file, remove some now unnecessary forward declarations - remove some obvious comments - clean up proc init function and move a proc-related printk there Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy
David S. Miller
parent
198a291ce3
commit
69ab4b7d6d
141
net/8021q/vlan.c
141
net/8021q/vlan.c
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@ -50,16 +50,6 @@ static char vlan_version[] = DRV_VERSION;
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static char vlan_copyright[] = "Ben Greear <greearb@candelatech.com>";
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static char vlan_buggyright[] = "David S. Miller <davem@redhat.com>";
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static int vlan_device_event(struct notifier_block *, unsigned long, void *);
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static int vlan_ioctl_handler(struct net *net, void __user *);
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static int unregister_vlan_dev(struct net_device *, unsigned short );
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static struct notifier_block vlan_notifier_block = {
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.notifier_call = vlan_device_event,
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};
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/* These may be changed at run-time through IOCTLs */
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/* Determines interface naming scheme. */
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unsigned short vlan_name_type = VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD;
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@ -70,79 +60,6 @@ static struct packet_type vlan_packet_type = {
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/* End of global variables definitions. */
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/*
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* Function vlan_proto_init (pro)
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*
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* Initialize VLAN protocol layer,
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*
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*/
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static int __init vlan_proto_init(void)
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{
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int err;
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pr_info("%s v%s %s\n", vlan_fullname, vlan_version, vlan_copyright);
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pr_info("All bugs added by %s\n", vlan_buggyright);
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/* proc file system initialization */
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err = vlan_proc_init();
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if (err < 0) {
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pr_err("%s: can't create entry in proc filesystem!\n",
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__FUNCTION__);
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return err;
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}
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dev_add_pack(&vlan_packet_type);
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/* Register us to receive netdevice events */
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err = register_netdevice_notifier(&vlan_notifier_block);
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if (err < 0)
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goto err1;
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err = vlan_netlink_init();
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if (err < 0)
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goto err2;
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vlan_ioctl_set(vlan_ioctl_handler);
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return 0;
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err2:
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unregister_netdevice_notifier(&vlan_notifier_block);
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err1:
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vlan_proc_cleanup();
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dev_remove_pack(&vlan_packet_type);
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return err;
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}
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/*
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* Module 'remove' entry point.
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* o delete /proc/net/router directory and static entries.
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*/
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static void __exit vlan_cleanup_module(void)
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{
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int i;
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vlan_ioctl_set(NULL);
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vlan_netlink_fini();
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/* Un-register us from receiving netdevice events */
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unregister_netdevice_notifier(&vlan_notifier_block);
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dev_remove_pack(&vlan_packet_type);
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/* This table must be empty if there are no module
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* references left.
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*/
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for (i = 0; i < VLAN_GRP_HASH_SIZE; i++) {
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BUG_ON(!hlist_empty(&vlan_group_hash[i]));
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}
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vlan_proc_cleanup();
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synchronize_net();
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}
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module_init(vlan_proto_init);
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module_exit(vlan_cleanup_module);
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/* Must be invoked with RCU read lock (no preempt) */
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static struct vlan_group *__vlan_find_group(int real_dev_ifindex)
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{
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@ -592,6 +509,10 @@ out:
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return NOTIFY_DONE;
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}
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static struct notifier_block vlan_notifier_block __read_mostly = {
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.notifier_call = vlan_device_event,
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};
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/*
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* VLAN IOCTL handler.
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* o execute requested action or pass command to the device driver
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@ -716,5 +637,59 @@ out:
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return err;
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}
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static int __init vlan_proto_init(void)
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{
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int err;
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pr_info("%s v%s %s\n", vlan_fullname, vlan_version, vlan_copyright);
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pr_info("All bugs added by %s\n", vlan_buggyright);
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err = vlan_proc_init();
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if (err < 0)
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goto err1;
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err = register_netdevice_notifier(&vlan_notifier_block);
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if (err < 0)
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goto err2;
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err = vlan_netlink_init();
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if (err < 0)
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goto err3;
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dev_add_pack(&vlan_packet_type);
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vlan_ioctl_set(vlan_ioctl_handler);
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return 0;
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err3:
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unregister_netdevice_notifier(&vlan_notifier_block);
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err2:
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vlan_proc_cleanup();
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err1:
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return err;
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}
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static void __exit vlan_cleanup_module(void)
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{
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unsigned int i;
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vlan_ioctl_set(NULL);
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vlan_netlink_fini();
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unregister_netdevice_notifier(&vlan_notifier_block);
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dev_remove_pack(&vlan_packet_type);
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/* This table must be empty if there are no module references left. */
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for (i = 0; i < VLAN_GRP_HASH_SIZE; i++)
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BUG_ON(!hlist_empty(&vlan_group_hash[i]));
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vlan_proc_cleanup();
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synchronize_net();
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}
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module_init(vlan_proto_init);
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module_exit(vlan_cleanup_module);
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MODULE_LICENSE("GPL");
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MODULE_VERSION(DRV_VERSION);
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@ -158,15 +158,18 @@ void vlan_proc_cleanup(void)
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int __init vlan_proc_init(void)
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{
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proc_vlan_dir = proc_mkdir(name_root, init_net.proc_net);
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if (proc_vlan_dir) {
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proc_vlan_conf = create_proc_entry(name_conf,
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S_IFREG|S_IRUSR|S_IWUSR,
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proc_vlan_dir);
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if (proc_vlan_conf) {
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proc_vlan_conf->proc_fops = &vlan_fops;
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return 0;
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}
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}
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if (!proc_vlan_dir)
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goto err;
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proc_vlan_conf = create_proc_entry(name_conf, S_IFREG|S_IRUSR|S_IWUSR,
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proc_vlan_dir);
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if (!proc_vlan_conf)
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goto err;
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proc_vlan_conf->proc_fops = &vlan_fops;
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return 0;
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err:
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pr_err("%s: can't create entry in proc filesystem!\n", __FUNCTION__);
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vlan_proc_cleanup();
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return -ENOBUFS;
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}
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