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 */
103 struct list_head bufs;
104 ulong stime; /* for disk stats */
116 struct list_head head;
120 struct aoetgt *t; /* parent target I belong to */
124 struct sk_buff *skb; /* command skb freed on module exit */
125 struct sk_buff *r_skb; /* response skb for async processing */
131 struct net_device *nd;
133 unsigned char lostjumbo;
138 unsigned char addr[6];
140 struct aoedev *d; /* parent device I belong to */
141 struct list_head factive[NFACTIVE]; /* hash of active frames */
142 struct list_head ffree; /* list of free frames */
143 struct aoeif ifs[NAOEIFS];
144 struct aoeif *ifp; /* current aoeif in use */
147 u16 lasttag; /* last tag sent */
150 ulong lastwadj; /* last window adjustment */
160 u16 nopen; /* (bd_openers isn't available without sleeping) */
161 u16 rttavg; /* round trip average of requests/responses */
163 u16 fw_ver; /* version of blade's firmware */
164 struct work_struct work;/* disk create work struct */
166 struct request_queue *blkq;
167 struct hd_geometry geo;
169 struct timer_list timer;
171 struct sk_buff_head sendq;
172 struct sk_buff_head skbpool;
173 mempool_t *bufpool; /* for deadlock-free Buf allocation */
174 struct list_head bufq; /* queue of bios to work on */
175 struct buf *inprocess; /* the one we're currently working on */
176 struct aoetgt *targets[NTARGETS];
177 struct aoetgt **tgt; /* target in use when working */
178 struct aoetgt *htgt; /* target needing rexmit assistance */
183 /* kthread tracking */
185 struct completion rendez;
186 struct task_struct *task;
187 wait_queue_head_t *waitq;
193 int aoeblk_init(void);
194 void aoeblk_exit(void);
195 void aoeblk_gdalloc(void *);
196 void aoedisk_rm_sysfs(struct aoedev *d);
198 int aoechr_init(void);
199 void aoechr_exit(void);
200 void aoechr_error(char *);
202 void aoecmd_work(struct aoedev *d);
203 void aoecmd_cfg(ushort aoemajor, unsigned char aoeminor);
204 struct sk_buff *aoecmd_ata_rsp(struct sk_buff *);
205 void aoecmd_cfg_rsp(struct sk_buff *);
206 void aoecmd_sleepwork(struct work_struct *);
207 void aoecmd_cleanslate(struct aoedev *);
208 void aoecmd_exit(void);
209 int aoecmd_init(void);
210 struct sk_buff *aoecmd_ata_id(struct aoedev *);
211 void aoe_freetframe(struct frame *);
213 int aoedev_init(void);
214 void aoedev_exit(void);
215 struct aoedev *aoedev_by_aoeaddr(int maj, int min);
216 struct aoedev *aoedev_by_sysminor_m(ulong sysminor);
217 void aoedev_downdev(struct aoedev *d);
218 int aoedev_flush(const char __user *str, size_t size);
219 void aoe_failbuf(struct aoedev *d, struct buf *buf);
221 int aoenet_init(void);
222 void aoenet_exit(void);
223 void aoenet_xmit(struct sk_buff_head *);
224 int is_aoe_netif(struct net_device *ifp);
225 int set_aoe_iflist(const char __user *str, size_t size);