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),
52 #include <linux/skbuff.h>
54 static inline struct aoe_hdr *aoe_hdr(const struct sk_buff *skb)
56 return (struct aoe_hdr *)skb_mac_header(skb);
62 unsigned char errfeat;
64 unsigned char cmdstat;
78 unsigned char aoeccmd;
79 unsigned char cslen[2];
83 DEVFL_UP = 1, /* device is installed in system and ready for AoE->ATA commands */
84 DEVFL_TKILL = (1<<1), /* flag for timer to know when to kill self */
85 DEVFL_EXT = (1<<2), /* device accepts lba48 commands */
86 DEVFL_CLOSEWAIT = (1<<3), /* device is waiting for all closes to revalidate */
87 DEVFL_GDALLOC = (1<<4), /* need to alloc gendisk */
89 DEVFL_NEWSIZE = (1<<6), /* need to update dev size in block layer */
90 DEVFL_MAXBCNT = (1<<7), /* d->maxbcnt is not changeable */
91 DEVFL_KICKME = (1<<8),
97 DEFAULTBCNT = 2 * 512, /* 2 sectors */
98 NPERSHELF = 16, /* number of slots per shelf address */
104 struct list_head bufs;
105 ulong start_time; /* for disk stats */
128 unsigned char addr[6]; /* remote mac addr */
133 u16 nopen; /* (bd_openers isn't available without sleeping) */
134 u16 lasttag; /* last tag sent */
135 u16 rttavg; /* round trip average of requests/responses */
137 u16 fw_ver; /* version of blade's firmware */
139 struct work_struct work;/* disk create work struct */
141 struct request_queue blkq;
142 struct hd_geometry geo;
144 struct timer_list timer;
146 struct net_device *ifp; /* interface ed is attached to */
147 struct sk_buff *sendq_hd; /* packets needing to be sent, list head */
148 struct sk_buff *sendq_tl;
149 mempool_t *bufpool; /* for deadlock-free Buf allocation */
150 struct list_head bufq; /* queue of bios to work on */
151 struct buf *inprocess; /* the one we're currently working on */
153 ushort nframes; /* number of frames below */
154 struct frame *frames;
158 int aoeblk_init(void);
159 void aoeblk_exit(void);
160 void aoeblk_gdalloc(void *);
161 void aoedisk_rm_sysfs(struct aoedev *d);
163 int aoechr_init(void);
164 void aoechr_exit(void);
165 void aoechr_error(char *);
167 void aoecmd_work(struct aoedev *d);
168 void aoecmd_cfg(ushort aoemajor, unsigned char aoeminor);
169 void aoecmd_ata_rsp(struct sk_buff *);
170 void aoecmd_cfg_rsp(struct sk_buff *);
171 void aoecmd_sleepwork(struct work_struct *);
172 struct sk_buff *new_skb(ulong);
174 int aoedev_init(void);
175 void aoedev_exit(void);
176 struct aoedev *aoedev_by_aoeaddr(int maj, int min);
177 struct aoedev *aoedev_by_sysminor_m(ulong sysminor, ulong bufcnt);
178 void aoedev_downdev(struct aoedev *d);
179 int aoedev_isbusy(struct aoedev *d);
181 int aoenet_init(void);
182 void aoenet_exit(void);
183 void aoenet_xmit(struct sk_buff *);
184 int is_aoe_netif(struct net_device *ifp);
185 int set_aoe_iflist(const char __user *str, size_t size);
187 u64 mac_addr(char addr[6]);