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"
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 */
101 struct list_head bufs;
102 ulong stime; /* for disk stats */
124 struct net_device *nd;
126 unsigned char lostjumbo;
131 unsigned char addr[6];
133 struct frame *frames;
134 struct aoeif ifs[NAOEIFS];
135 struct aoeif *ifp; /* current aoeif in use */
138 u16 lasttag; /* last tag sent */
140 ulong lastwadj; /* last window adjustment */
151 u16 nopen; /* (bd_openers isn't available without sleeping) */
152 u16 rttavg; /* round trip average of requests/responses */
154 u16 fw_ver; /* version of blade's firmware */
155 struct work_struct work;/* disk create work struct */
157 struct request_queue blkq;
158 struct hd_geometry geo;
160 struct timer_list timer;
162 struct sk_buff *sendq_hd; /* packets needing to be sent, list head */
163 struct sk_buff *sendq_tl;
164 struct sk_buff *skbpool_hd;
165 struct sk_buff *skbpool_tl;
167 mempool_t *bufpool; /* for deadlock-free Buf allocation */
168 struct list_head bufq; /* queue of bios to work on */
169 struct buf *inprocess; /* the one we're currently working on */
170 struct aoetgt *targets[NTARGETS];
171 struct aoetgt **tgt; /* target in use when working */
172 struct aoetgt **htgt; /* target needing rexmit assistance */
176 int aoeblk_init(void);
177 void aoeblk_exit(void);
178 void aoeblk_gdalloc(void *);
179 void aoedisk_rm_sysfs(struct aoedev *d);
181 int aoechr_init(void);
182 void aoechr_exit(void);
183 void aoechr_error(char *);
185 void aoecmd_work(struct aoedev *d);
186 void aoecmd_cfg(ushort aoemajor, unsigned char aoeminor);
187 void aoecmd_ata_rsp(struct sk_buff *);
188 void aoecmd_cfg_rsp(struct sk_buff *);
189 void aoecmd_sleepwork(struct work_struct *);
190 void aoecmd_cleanslate(struct aoedev *);
191 struct sk_buff *aoecmd_ata_id(struct aoedev *);
193 int aoedev_init(void);
194 void aoedev_exit(void);
195 struct aoedev *aoedev_by_aoeaddr(int maj, int min);
196 struct aoedev *aoedev_by_sysminor_m(ulong sysminor);
197 void aoedev_downdev(struct aoedev *d);
198 int aoedev_flush(const char __user *str, size_t size);
200 int aoenet_init(void);
201 void aoenet_exit(void);
202 void aoenet_xmit(struct sk_buff *);
203 int is_aoe_netif(struct net_device *ifp);
204 int set_aoe_iflist(const char __user *str, size_t size);
206 unsigned long long mac_addr(char addr[6]);