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 xprintk(L, fmt, arg...) printk(L "aoe: " "%s: " fmt, __func__, ## arg)
14 #define iprintk(fmt, arg...) xprintk(KERN_INFO, fmt, ## arg)
15 #define eprintk(fmt, arg...) xprintk(KERN_ERR, fmt, ## arg)
16 #define dprintk(fmt, arg...) xprintk(KERN_DEBUG, fmt, ## arg)
18 #define SYSMINOR(aoemajor, aoeminor) ((aoemajor) * NPERSHELF + (aoeminor))
19 #define AOEMAJOR(sysminor) ((sysminor) / NPERSHELF)
20 #define AOEMINOR(sysminor) ((sysminor) % NPERSHELF)
21 #define WHITESPACE " \t\v\f\n"
32 AOEAFL_ASYNC = (1<<1),
33 AOEAFL_WRITE = (1<<0),
58 unsigned char errfeat;
60 unsigned char cmdstat;
74 unsigned char aoeccmd;
75 unsigned char cslen[2];
79 DEVFL_UP = 1, /* device is installed in system and ready for AoE->ATA commands */
80 DEVFL_TKILL = (1<<1), /* flag for timer to know when to kill self */
81 DEVFL_EXT = (1<<2), /* device accepts lba48 commands */
82 DEVFL_CLOSEWAIT = (1<<3), /* device is waiting for all closes to revalidate */
83 DEVFL_GDALLOC = (1<<4), /* need to alloc gendisk */
85 DEVFL_NEWSIZE = (1<<6), /* need to update dev size in block layer */
86 DEVFL_MAXBCNT = (1<<7), /* d->maxbcnt is not changeable */
92 DEFAULTBCNT = 2 * 512, /* 2 sectors */
93 NPERSHELF = 16, /* number of slots per shelf address */
99 struct list_head bufs;
100 ulong start_time; /* for disk stats */
123 unsigned char addr[6]; /* remote mac addr */
128 u16 nopen; /* (bd_openers isn't available without sleeping) */
129 u16 lasttag; /* last tag sent */
130 u16 rttavg; /* round trip average of requests/responses */
132 u16 fw_ver; /* version of blade's firmware */
134 struct work_struct work;/* disk create work struct */
136 request_queue_t blkq;
137 struct hd_geometry geo;
139 struct timer_list timer;
141 struct net_device *ifp; /* interface ed is attached to */
142 struct sk_buff *sendq_hd; /* packets needing to be sent, list head */
143 struct sk_buff *sendq_tl;
144 mempool_t *bufpool; /* for deadlock-free Buf allocation */
145 struct list_head bufq; /* queue of bios to work on */
146 struct buf *inprocess; /* the one we're currently working on */
148 ushort nframes; /* number of frames below */
149 struct frame *frames;
153 int aoeblk_init(void);
154 void aoeblk_exit(void);
155 void aoeblk_gdalloc(void *);
156 void aoedisk_rm_sysfs(struct aoedev *d);
158 int aoechr_init(void);
159 void aoechr_exit(void);
160 void aoechr_error(char *);
162 void aoecmd_work(struct aoedev *d);
163 void aoecmd_cfg(ushort aoemajor, unsigned char aoeminor);
164 void aoecmd_ata_rsp(struct sk_buff *);
165 void aoecmd_cfg_rsp(struct sk_buff *);
166 void aoecmd_sleepwork(void *vp);
167 struct sk_buff *new_skb(ulong);
169 int aoedev_init(void);
170 void aoedev_exit(void);
171 struct aoedev *aoedev_by_aoeaddr(int maj, int min);
172 struct aoedev *aoedev_by_sysminor_m(ulong sysminor, ulong bufcnt);
173 void aoedev_downdev(struct aoedev *d);
174 int aoedev_isbusy(struct aoedev *d);
176 int aoenet_init(void);
177 void aoenet_exit(void);
178 void aoenet_xmit(struct sk_buff *);
179 int is_aoe_netif(struct net_device *ifp);
180 int set_aoe_iflist(const char __user *str, size_t size);
182 u64 mac_addr(char addr[6]);