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 */
113 struct list_head head;
116 struct aoetgt *t; /* parent target I belong to */
118 struct sk_buff *skb; /* command skb freed on module exit */
119 struct sk_buff *r_skb; /* response skb for async processing */
127 struct net_device *nd;
129 unsigned char lostjumbo;
134 unsigned char addr[6];
136 struct aoedev *d; /* parent device I belong to */
137 struct list_head factive[NFACTIVE]; /* hash of active frames */
138 struct list_head ffree; /* list of free frames */
139 struct aoeif ifs[NAOEIFS];
140 struct aoeif *ifp; /* current aoeif in use */
143 u16 lasttag; /* last tag sent */
146 ulong lastwadj; /* last window adjustment */
156 u16 nopen; /* (bd_openers isn't available without sleeping) */
157 u16 rttavg; /* round trip average of requests/responses */
159 u16 fw_ver; /* version of blade's firmware */
161 struct work_struct work;/* disk create work struct */
163 struct request_queue *blkq;
164 struct hd_geometry geo;
166 struct timer_list timer;
168 struct sk_buff_head skbpool;
169 mempool_t *bufpool; /* for deadlock-free Buf allocation */
170 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);
214 int aoedev_init(void);
215 void aoedev_exit(void);
216 struct aoedev *aoedev_by_aoeaddr(int maj, int min);
217 struct aoedev *aoedev_by_sysminor_m(ulong sysminor);
218 void aoedev_downdev(struct aoedev *d);
219 int aoedev_flush(const char __user *str, size_t size);
220 void aoe_failbuf(struct aoedev *, struct buf *);
221 void aoedev_put(struct aoedev *);
223 int aoenet_init(void);
224 void aoenet_exit(void);
225 void aoenet_xmit(struct sk_buff_head *);
226 int is_aoe_netif(struct net_device *ifp);
227 int set_aoe_iflist(const char __user *str, size_t size);