1 /* Copyright (c) 2006 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"
27 AOEAFL_ASYNC = (1<<1),
28 AOEAFL_WRITE = (1<<0),
53 unsigned char errfeat;
55 unsigned char cmdstat;
69 unsigned char aoeccmd;
70 unsigned char cslen[2];
74 DEVFL_UP = 1, /* device is installed in system and ready for AoE->ATA commands */
75 DEVFL_TKILL = (1<<1), /* flag for timer to know when to kill self */
76 DEVFL_EXT = (1<<2), /* device accepts lba48 commands */
77 DEVFL_CLOSEWAIT = (1<<3), /* device is waiting for all closes to revalidate */
78 DEVFL_GDALLOC = (1<<4), /* need to alloc gendisk */
79 DEVFL_KICKME = (1<<5), /* slow polling network card catch */
80 DEVFL_NEWSIZE = (1<<6), /* need to update dev size in block layer */
86 DEFAULTBCNT = 2 * 512, /* 2 sectors */
87 NPERSHELF = 16, /* number of slots per shelf address */
100 struct list_head bufs;
101 ulong stime; /* for disk stats */
123 struct net_device *nd;
125 unsigned char lostjumbo;
130 unsigned char addr[6];
132 struct frame *frames;
133 struct aoeif ifs[NAOEIFS];
134 struct aoeif *ifp; /* current aoeif in use */
137 u16 lasttag; /* last tag sent */
139 ulong lastwadj; /* last window adjustment */
149 u16 nopen; /* (bd_openers isn't available without sleeping) */
150 u16 rttavg; /* round trip average of requests/responses */
152 u16 fw_ver; /* version of blade's firmware */
153 struct work_struct work;/* disk create work struct */
155 struct request_queue blkq;
156 struct hd_geometry geo;
158 struct timer_list timer;
160 struct sk_buff *sendq_hd; /* packets needing to be sent, list head */
161 struct sk_buff *sendq_tl;
162 mempool_t *bufpool; /* for deadlock-free Buf allocation */
163 struct list_head bufq; /* queue of bios to work on */
164 struct buf *inprocess; /* the one we're currently working on */
165 struct aoetgt *targets[NTARGETS];
166 struct aoetgt **tgt; /* target in use when working */
167 struct aoetgt **htgt; /* target needing rexmit assistance */
171 int aoeblk_init(void);
172 void aoeblk_exit(void);
173 void aoeblk_gdalloc(void *);
174 void aoedisk_rm_sysfs(struct aoedev *d);
176 int aoechr_init(void);
177 void aoechr_exit(void);
178 void aoechr_error(char *);
180 void aoecmd_work(struct aoedev *d);
181 void aoecmd_cfg(ushort aoemajor, unsigned char aoeminor);
182 void aoecmd_ata_rsp(struct sk_buff *);
183 void aoecmd_cfg_rsp(struct sk_buff *);
184 void aoecmd_sleepwork(struct work_struct *);
185 void aoecmd_cleanslate(struct aoedev *);
186 struct sk_buff *aoecmd_ata_id(struct aoedev *);
188 int aoedev_init(void);
189 void aoedev_exit(void);
190 struct aoedev *aoedev_by_aoeaddr(int maj, int min);
191 struct aoedev *aoedev_by_sysminor_m(ulong sysminor);
192 void aoedev_downdev(struct aoedev *d);
193 int aoedev_isbusy(struct aoedev *d);
195 int aoenet_init(void);
196 void aoenet_exit(void);
197 void aoenet_xmit(struct sk_buff *);
198 int is_aoe_netif(struct net_device *ifp);
199 int set_aoe_iflist(const char __user *str, size_t size);
201 u64 mac_addr(char addr[6]);