1 /* Copyright (c) 2007 Coraid, Inc. See COPYING for GPL terms. */
4 #define DEVICE_NAME "aoe"
6 /* set AOE_PARTITIONS to 1 to use whole-disks only
7 * default is 16, which is 15 partitions plus the whole disk
10 #define AOE_PARTITIONS (16)
13 #define SYSMINOR(aoemajor, aoeminor) ((aoemajor) * NPERSHELF + (aoeminor))
14 #define AOEMAJOR(sysminor) ((sysminor) / NPERSHELF)
15 #define AOEMINOR(sysminor) ((sysminor) % NPERSHELF)
16 #define WHITESPACE " \t\v\f\n"
21 AOECMD_VEND_MIN
= 0xf0,
28 AOEAFL_ASYNC
= (1<<1),
29 AOEAFL_WRITE
= (1<<0),
54 unsigned char errfeat
;
56 unsigned char cmdstat
;
70 unsigned char aoeccmd
;
71 unsigned char cslen
[2];
75 DEVFL_UP
= 1, /* device is installed in system and ready for AoE->ATA commands */
76 DEVFL_TKILL
= (1<<1), /* flag for timer to know when to kill self */
77 DEVFL_EXT
= (1<<2), /* device accepts lba48 commands */
78 DEVFL_CLOSEWAIT
= (1<<3), /* device is waiting for all closes to revalidate */
79 DEVFL_GDALLOC
= (1<<4), /* need to alloc gendisk */
80 DEVFL_KICKME
= (1<<5), /* slow polling network card catch */
81 DEVFL_NEWSIZE
= (1<<6), /* need to update dev size in block layer */
87 DEFAULTBCNT
= 2 * 512, /* 2 sectors */
88 NPERSHELF
= 16, /* number of slots per shelf address */
112 struct list_head head
;
115 struct aoetgt
*t
; /* parent target I belong to */
117 struct sk_buff
*skb
; /* command skb freed on module exit */
118 struct sk_buff
*r_skb
; /* response skb for async processing */
126 struct net_device
*nd
;
132 unsigned char addr
[6];
134 struct aoedev
*d
; /* parent device I belong to */
135 struct list_head factive
[NFACTIVE
]; /* hash of active frames */
136 struct list_head ffree
; /* list of free frames */
137 struct aoeif ifs
[NAOEIFS
];
138 struct aoeif
*ifp
; /* current aoeif in use */
141 u16 lasttag
; /* last tag sent */
144 ulong lastwadj
; /* last window adjustment */
155 u16 nopen
; /* (bd_openers isn't available without sleeping) */
156 u16 rttavg
; /* round trip average of requests/responses */
158 u16 fw_ver
; /* version of blade's firmware */
160 struct work_struct work
;/* disk create work struct */
162 struct request_queue
*blkq
;
163 struct hd_geometry geo
;
165 struct timer_list timer
;
167 struct sk_buff_head skbpool
;
168 mempool_t
*bufpool
; /* for deadlock-free Buf allocation */
169 struct { /* pointers to work in progress */
175 struct aoetgt
*targets
[NTARGETS
];
176 struct aoetgt
**tgt
; /* target in use when working */
177 struct aoetgt
*htgt
; /* target needing rexmit assistance */
182 /* kthread tracking */
184 struct completion rendez
;
185 struct task_struct
*task
;
186 wait_queue_head_t
*waitq
;
192 int aoeblk_init(void);
193 void aoeblk_exit(void);
194 void aoeblk_gdalloc(void *);
195 void aoedisk_rm_sysfs(struct aoedev
*d
);
197 int aoechr_init(void);
198 void aoechr_exit(void);
199 void aoechr_error(char *);
201 void aoecmd_work(struct aoedev
*d
);
202 void aoecmd_cfg(ushort aoemajor
, unsigned char aoeminor
);
203 struct sk_buff
*aoecmd_ata_rsp(struct sk_buff
*);
204 void aoecmd_cfg_rsp(struct sk_buff
*);
205 void aoecmd_sleepwork(struct work_struct
*);
206 void aoecmd_cleanslate(struct aoedev
*);
207 void aoecmd_exit(void);
208 int aoecmd_init(void);
209 struct sk_buff
*aoecmd_ata_id(struct aoedev
*);
210 void aoe_freetframe(struct frame
*);
211 void aoe_flush_iocq(void);
212 void aoe_end_request(struct aoedev
*, struct request
*, int);
213 int aoe_ktstart(struct ktstate
*k
);
214 void aoe_ktstop(struct ktstate
*k
);
216 int aoedev_init(void);
217 void aoedev_exit(void);
218 struct aoedev
*aoedev_by_aoeaddr(int maj
, int min
);
219 struct aoedev
*aoedev_by_sysminor_m(ulong sysminor
);
220 void aoedev_downdev(struct aoedev
*d
);
221 int aoedev_flush(const char __user
*str
, size_t size
);
222 void aoe_failbuf(struct aoedev
*, struct buf
*);
223 void aoedev_put(struct aoedev
*);
225 int aoenet_init(void);
226 void aoenet_exit(void);
227 void aoenet_xmit(struct sk_buff_head
*);
228 int is_aoe_netif(struct net_device
*ifp
);
229 int set_aoe_iflist(const char __user
*str
, size_t size
);
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