From 69ab4b7d6db68396dbfa827daa8d6f30f9b546a8 Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Mon, 21 Jan 2008 00:25:15 -0800 Subject: [PATCH] [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 Signed-off-by: David S. Miller --- net/8021q/vlan.c | 141 ++++++++++++++++++------------------------- net/8021q/vlanproc.c | 21 ++++--- 2 files changed, 70 insertions(+), 92 deletions(-) diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c index 69a9e0207b1..006d9a9bac9 100644 --- a/net/8021q/vlan.c +++ b/net/8021q/vlan.c @@ -50,16 +50,6 @@ static char vlan_version[] = DRV_VERSION; static char vlan_copyright[] = "Ben Greear "; static char vlan_buggyright[] = "David S. Miller "; -static int vlan_device_event(struct notifier_block *, unsigned long, void *); -static int vlan_ioctl_handler(struct net *net, void __user *); -static int unregister_vlan_dev(struct net_device *, unsigned short ); - -static struct notifier_block vlan_notifier_block = { - .notifier_call = vlan_device_event, -}; - -/* These may be changed at run-time through IOCTLs */ - /* Determines interface naming scheme. */ unsigned short vlan_name_type = VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD; @@ -70,79 +60,6 @@ static struct packet_type vlan_packet_type = { /* End of global variables definitions. */ -/* - * Function vlan_proto_init (pro) - * - * Initialize VLAN protocol layer, - * - */ -static int __init vlan_proto_init(void) -{ - int err; - - pr_info("%s v%s %s\n", vlan_fullname, vlan_version, vlan_copyright); - pr_info("All bugs added by %s\n", vlan_buggyright); - - /* proc file system initialization */ - err = vlan_proc_init(); - if (err < 0) { - pr_err("%s: can't create entry in proc filesystem!\n", - __FUNCTION__); - return err; - } - - dev_add_pack(&vlan_packet_type); - - /* Register us to receive netdevice events */ - err = register_netdevice_notifier(&vlan_notifier_block); - if (err < 0) - goto err1; - - err = vlan_netlink_init(); - if (err < 0) - goto err2; - - vlan_ioctl_set(vlan_ioctl_handler); - return 0; - -err2: - unregister_netdevice_notifier(&vlan_notifier_block); -err1: - vlan_proc_cleanup(); - dev_remove_pack(&vlan_packet_type); - return err; -} - -/* - * Module 'remove' entry point. - * o delete /proc/net/router directory and static entries. - */ -static void __exit vlan_cleanup_module(void) -{ - int i; - - vlan_ioctl_set(NULL); - vlan_netlink_fini(); - - /* Un-register us from receiving netdevice events */ - unregister_netdevice_notifier(&vlan_notifier_block); - - dev_remove_pack(&vlan_packet_type); - - /* This table must be empty if there are no module - * references left. - */ - for (i = 0; i < VLAN_GRP_HASH_SIZE; i++) { - BUG_ON(!hlist_empty(&vlan_group_hash[i])); - } - vlan_proc_cleanup(); - - synchronize_net(); -} - -module_init(vlan_proto_init); -module_exit(vlan_cleanup_module); - /* Must be invoked with RCU read lock (no preempt) */ static struct vlan_group *__vlan_find_group(int real_dev_ifindex) { @@ -592,6 +509,10 @@ out: return NOTIFY_DONE; } +static struct notifier_block vlan_notifier_block __read_mostly = { + .notifier_call = vlan_device_event, +}; + /* * VLAN IOCTL handler. * o execute requested action or pass command to the device driver @@ -716,5 +637,59 @@ out: return err; } +static int __init vlan_proto_init(void) +{ + int err; + + pr_info("%s v%s %s\n", vlan_fullname, vlan_version, vlan_copyright); + pr_info("All bugs added by %s\n", vlan_buggyright); + + err = vlan_proc_init(); + if (err < 0) + goto err1; + + err = register_netdevice_notifier(&vlan_notifier_block); + if (err < 0) + goto err2; + + err = vlan_netlink_init(); + if (err < 0) + goto err3; + + dev_add_pack(&vlan_packet_type); + vlan_ioctl_set(vlan_ioctl_handler); + return 0; + +err3: + unregister_netdevice_notifier(&vlan_notifier_block); +err2: + vlan_proc_cleanup(); +err1: + return err; +} + +static void __exit vlan_cleanup_module(void) +{ + unsigned int i; + + vlan_ioctl_set(NULL); + vlan_netlink_fini(); + + unregister_netdevice_notifier(&vlan_notifier_block); + + dev_remove_pack(&vlan_packet_type); + + /* This table must be empty if there are no module references left. */ + for (i = 0; i < VLAN_GRP_HASH_SIZE; i++) + BUG_ON(!hlist_empty(&vlan_group_hash[i])); + + vlan_proc_cleanup(); + + synchronize_net(); +} + +module_init(vlan_proto_init); +module_exit(vlan_cleanup_module); + MODULE_LICENSE("GPL"); MODULE_VERSION(DRV_VERSION); diff --git a/net/8021q/vlanproc.c b/net/8021q/vlanproc.c index 5da02e29a2c..971e6233801 100644 --- a/net/8021q/vlanproc.c +++ b/net/8021q/vlanproc.c @@ -158,15 +158,18 @@ void vlan_proc_cleanup(void) int __init vlan_proc_init(void) { proc_vlan_dir = proc_mkdir(name_root, init_net.proc_net); - if (proc_vlan_dir) { - proc_vlan_conf = create_proc_entry(name_conf, - S_IFREG|S_IRUSR|S_IWUSR, - proc_vlan_dir); - if (proc_vlan_conf) { - proc_vlan_conf->proc_fops = &vlan_fops; - return 0; - } - } + if (!proc_vlan_dir) + goto err; + + proc_vlan_conf = create_proc_entry(name_conf, S_IFREG|S_IRUSR|S_IWUSR, + proc_vlan_dir); + if (!proc_vlan_conf) + goto err; + proc_vlan_conf->proc_fops = &vlan_fops; + return 0; + +err: + pr_err("%s: can't create entry in proc filesystem!\n", __FUNCTION__); vlan_proc_cleanup(); return -ENOBUFS; } -- 2.41.1