[mirror_ubuntu-hirsute-kernel.git] / drivers / block / aoe / aoemain.c

/* Copyright (c) 2012 Coraid, Inc.  See COPYING for GPL terms. */
/*
 * aoemain.c
 * Module initialization routines, discover timer
 */

#include <linux/hdreg.h>
#include <linux/blkdev.h>
#include <linux/module.h>
#include <linux/skbuff.h>
#include "aoe.h"

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Sam Hopkins <sah@coraid.com>");
MODULE_DESCRIPTION("AoE block/char driver for 2.6.2 and newer 2.6 kernels");
MODULE_VERSION(VERSION);

static struct timer_list timer;

static void discover_timer(struct timer_list *t)
{
	mod_timer(t, jiffies + HZ * 60); /* one minute */

	aoecmd_cfg(0xffff, 0xff);
}

static void __exit
aoe_exit(void)
{
	del_timer_sync(&timer);

	aoenet_exit();
	unregister_blkdev(AOE_MAJOR, DEVICE_NAME);
	aoecmd_exit();
	aoechr_exit();
	aoedev_exit();
	aoeblk_exit();		/* free cache after de-allocating bufs */
}

static int __init
aoe_init(void)
{
	int ret;

	ret = aoedev_init();
	if (ret)
		return ret;
	ret = aoechr_init();
	if (ret)
		goto chr_fail;
	ret = aoeblk_init();
	if (ret)
		goto blk_fail;
	ret = aoenet_init();
	if (ret)
		goto net_fail;
	ret = aoecmd_init();
	if (ret)
		goto cmd_fail;
	ret = register_blkdev(AOE_MAJOR, DEVICE_NAME);
	if (ret < 0) {
		printk(KERN_ERR "aoe: can't register major\n");
		goto blkreg_fail;
	}
	printk(KERN_INFO "aoe: AoE v%s initialised.\n", VERSION);

	timer_setup(&timer, discover_timer, 0);
	discover_timer(&timer);
	return 0;
 blkreg_fail:
	aoecmd_exit();
 cmd_fail:
	aoenet_exit();
 net_fail:
	aoeblk_exit();
 blk_fail:
	aoechr_exit();
 chr_fail:
	aoedev_exit();

	printk(KERN_INFO "aoe: initialisation failure.\n");
	return ret;
}

module_init(aoe_init);
module_exit(aoe_exit);
Commit	Line	Data
fea05a26	1	/* Copyright (c) 2012 Coraid, Inc. See COPYING for GPL terms. */
1da177e4 LT	2	/*
	3	* aoemain.c
	4	* Module initialization routines, discover timer
	5	*/
	6
	7	#include <linux/hdreg.h>
	8	#include <linux/blkdev.h>
	9	#include <linux/module.h>
e9bb8fb0	10	#include <linux/skbuff.h>
1da177e4 LT	11	#include "aoe.h"
	12
	13	MODULE_LICENSE("GPL");
	14	MODULE_AUTHOR("Sam Hopkins <sah@coraid.com>");
02edb05e	15	MODULE_DESCRIPTION("AoE block/char driver for 2.6.2 and newer 2.6 kernels");
1da177e4 LT	16	MODULE_VERSION(VERSION);
1da177e4 LT	17
5ea22086	18	static struct timer_list timer;
1da177e4	19
5ea22086	20	static void discover_timer(struct timer_list *t)
1da177e4	21	{
5ea22086	22	mod_timer(t, jiffies + HZ * 60); /* one minute */
1da177e4	23
5ea22086	24	aoecmd_cfg(0xffff, 0xff);
1da177e4 LT	25	}
1da177e4 LT	26
e7cc005f	27	static void __exit
1da177e4 LT	28	aoe_exit(void)
1da177e4 LT	29	{
5ea22086	30	del_timer_sync(&timer);
1da177e4 LT	31
	32	aoenet_exit();
	33	unregister_blkdev(AOE_MAJOR, DEVICE_NAME);
896831f5	34	aoecmd_exit();
1da177e4 LT	35	aoechr_exit();
	36	aoedev_exit();
	37	aoeblk_exit(); /* free cache after de-allocating bufs */
	38	}
	39
	40	static int __init
	41	aoe_init(void)
	42	{
	43	int ret;
	44
	45	ret = aoedev_init();
	46	if (ret)
	47	return ret;
	48	ret = aoechr_init();
	49	if (ret)
	50	goto chr_fail;
	51	ret = aoeblk_init();
	52	if (ret)
	53	goto blk_fail;
	54	ret = aoenet_init();
	55	if (ret)
	56	goto net_fail;
896831f5 EC	57	ret = aoecmd_init();
	58	if (ret)
	59	goto cmd_fail;
1da177e4 LT	60	ret = register_blkdev(AOE_MAJOR, DEVICE_NAME);
1da177e4 LT	61	if (ret < 0) {
a12c93f0	62	printk(KERN_ERR "aoe: can't register major\n");
1da177e4 LT	63	goto blkreg_fail;
1da177e4 LT	64	}
a12c93f0	65	printk(KERN_INFO "aoe: AoE v%s initialised.\n", VERSION);
5ea22086 KC	66
	67	timer_setup(&timer, discover_timer, 0);
	68	discover_timer(&timer);
1da177e4	69	return 0;
1da177e4	70	blkreg_fail:
896831f5 EC	71	aoecmd_exit();
896831f5 EC	72	cmd_fail:
1da177e4 LT	73	aoenet_exit();
	74	net_fail:
	75	aoeblk_exit();
	76	blk_fail:
	77	aoechr_exit();
	78	chr_fail:
	79	aoedev_exit();
a04b41cd	80
a12c93f0	81	printk(KERN_INFO "aoe: initialisation failure.\n");
1da177e4 LT	82	return ret;
	83	}
	84
	85	module_init(aoe_init);
	86	module_exit(aoe_exit);
	87