/* Copyright (c) 2006 Coraid, Inc.  See COPYING for GPL terms. */#define VERSION "32"#define AOE_MAJOR 152#define DEVICE_NAME "aoe"/* set AOE_PARTITIONS to 1 to use whole-disks only * default is 16, which is 15 partitions plus the whole disk */#ifndef AOE_PARTITIONS#define AOE_PARTITIONS (16)#endif#define SYSMINOR(aoemajor, aoeminor) ((aoemajor) * NPERSHELF + (aoeminor))#define AOEMAJOR(sysminor) ((sysminor) / NPERSHELF)#define AOEMINOR(sysminor) ((sysminor) % NPERSHELF)#define WHITESPACE " \t\v\f\n"enum {	AOECMD_ATA,	AOECMD_CFG,	AOEFL_RSP = (1<<3),	AOEFL_ERR = (1<<2),	AOEAFL_EXT = (1<<6),	AOEAFL_DEV = (1<<4),	AOEAFL_ASYNC = (1<<1),	AOEAFL_WRITE = (1<<0),	AOECCMD_READ = 0,	AOECCMD_TEST,	AOECCMD_PTEST,	AOECCMD_SET,	AOECCMD_FSET,	AOE_HVER = 0x10,};struct aoe_hdr {	unsigned char dst[6];	unsigned char src[6];	__be16 type;	unsigned char verfl;	unsigned char err;	__be16 major;	unsigned char minor;	unsigned char cmd;	__be32 tag;};struct aoe_atahdr {	unsigned char aflags;	unsigned char errfeat;	unsigned char scnt;	unsigned char cmdstat;	unsigned char lba0;	unsigned char lba1;	unsigned char lba2;	unsigned char lba3;	unsigned char lba4;	unsigned char lba5;	unsigned char res[2];};struct aoe_cfghdr {	__be16 bufcnt;	__be16 fwver;	unsigned char scnt;	unsigned char aoeccmd;	unsigned char cslen[2];};enum {	DEVFL_UP = 1,	/* device is installed in system and ready for AoE->ATA commands */	DEVFL_TKILL = (1<<1),	/* flag for timer to know when to kill self */	DEVFL_EXT = (1<<2),	/* device accepts lba48 commands */	DEVFL_CLOSEWAIT = (1<<3), /* device is waiting for all closes to revalidate */	DEVFL_GDALLOC = (1<<4),	/* need to alloc gendisk */	DEVFL_PAUSE = (1<<5),	DEVFL_NEWSIZE = (1<<6),	/* need to update dev size in block layer */	DEVFL_MAXBCNT = (1<<7), /* d->maxbcnt is not changeable */	DEVFL_KICKME = (1<<8),	BUFFL_FAIL = 1,};enum {	DEFAULTBCNT = 2 * 512,	/* 2 sectors */	NPERSHELF = 16,		/* number of slots per shelf address */	FREETAG = -1,	MIN_BUFS = 8,};struct buf {	struct list_head bufs;	ulong start_time;	/* for disk stats */	ulong flags;	ulong nframesout;	char *bufaddr;	ulong resid;	ulong bv_resid;	sector_t sector;	struct bio *bio;	struct bio_vec *bv;};struct frame {	int tag;	ulong waited;	struct buf *buf;	char *bufaddr;	ulong bcnt;	sector_t lba;	struct sk_buff *skb;};struct aoedev {	struct aoedev *next;	unsigned char addr[6];	/* remote mac addr */	ushort flags;	ulong sysminor;	ulong aoemajor;	ulong aoeminor;	u16 nopen;		/* (bd_openers isn't available without sleeping) */	u16 lasttag;		/* last tag sent */	u16 rttavg;		/* round trip average of requests/responses */	u16 mintimer;	u16 fw_ver;		/* version of blade's firmware */	u16 maxbcnt;	struct work_struct work;/* disk create work struct */	struct gendisk *gd;	struct request_queue blkq;	struct hd_geometry geo; 	sector_t ssize;	struct timer_list timer;	spinlock_t lock;	struct net_device *ifp;	/* interface ed is attached to */	struct sk_buff *sendq_hd; /* packets needing to be sent, list head */	struct sk_buff *sendq_tl;	mempool_t *bufpool;	/* for deadlock-free Buf allocation */	struct list_head bufq;	/* queue of bios to work on */	struct buf *inprocess;	/* the one we're currently working on */	ushort lostjumbo;	ushort nframes;		/* number of frames below */	struct frame *frames;};int aoeblk_init(void);void aoeblk_exit(void);void aoeblk_gdalloc(void *);void aoedisk_rm_sysfs(struct aoedev *d);int aoechr_init(void);void aoechr_exit(void);void aoechr_error(char *);void aoecmd_work(struct aoedev *d);void aoecmd_cfg(ushort aoemajor, unsigned char aoeminor);void aoecmd_ata_rsp(struct sk_buff *);void aoecmd_cfg_rsp(struct sk_buff *);void aoecmd_sleepwork(struct work_struct *);struct sk_buff *new_skb(ulong);int aoedev_init(void);void aoedev_exit(void);struct aoedev *aoedev_by_aoeaddr(int maj, int min);struct aoedev *aoedev_by_sysminor_m(ulong sysminor, ulong bufcnt);void aoedev_downdev(struct aoedev *d);int aoedev_isbusy(struct aoedev *d);int aoenet_init(void);void aoenet_exit(void);void aoenet_xmit(struct sk_buff *);int is_aoe_netif(struct net_device *ifp);int set_aoe_iflist(const char __user *str, size_t size);u64 mac_addr(char addr[6]);