1
2#define VERSION "85"
3#define AOE_MAJOR 152
4#define DEVICE_NAME "aoe"
5
6
7
8
9#ifndef AOE_PARTITIONS
10#define AOE_PARTITIONS (16)
11#endif
12
13#define WHITESPACE " \t\v\f\n,"
14
15enum {
16 AOECMD_ATA,
17 AOECMD_CFG,
18 AOECMD_VEND_MIN = 0xf0,
19
20 AOEFL_RSP = (1<<3),
21 AOEFL_ERR = (1<<2),
22
23 AOEAFL_EXT = (1<<6),
24 AOEAFL_DEV = (1<<4),
25 AOEAFL_ASYNC = (1<<1),
26 AOEAFL_WRITE = (1<<0),
27
28 AOECCMD_READ = 0,
29 AOECCMD_TEST,
30 AOECCMD_PTEST,
31 AOECCMD_SET,
32 AOECCMD_FSET,
33
34 AOE_HVER = 0x10,
35};
36
37struct aoe_hdr {
38 unsigned char dst[6];
39 unsigned char src[6];
40 __be16 type;
41 unsigned char verfl;
42 unsigned char err;
43 __be16 major;
44 unsigned char minor;
45 unsigned char cmd;
46 __be32 tag;
47};
48
49struct aoe_atahdr {
50 unsigned char aflags;
51 unsigned char errfeat;
52 unsigned char scnt;
53 unsigned char cmdstat;
54 unsigned char lba0;
55 unsigned char lba1;
56 unsigned char lba2;
57 unsigned char lba3;
58 unsigned char lba4;
59 unsigned char lba5;
60 unsigned char res[2];
61};
62
63struct aoe_cfghdr {
64 __be16 bufcnt;
65 __be16 fwver;
66 unsigned char scnt;
67 unsigned char aoeccmd;
68 unsigned char cslen[2];
69};
70
71enum {
72 DEVFL_UP = 1,
73 DEVFL_TKILL = (1<<1),
74 DEVFL_EXT = (1<<2),
75 DEVFL_GDALLOC = (1<<3),
76 DEVFL_GD_NOW = (1<<4),
77 DEVFL_KICKME = (1<<5),
78 DEVFL_NEWSIZE = (1<<6),
79 DEVFL_FREEING = (1<<7),
80 DEVFL_FREED = (1<<8),
81};
82
83enum {
84 DEFAULTBCNT = 2 * 512,
85 MIN_BUFS = 16,
86 NTARGETS = 4,
87 NAOEIFS = 8,
88 NSKBPOOLMAX = 256,
89 NFACTIVE = 61,
90
91 TIMERTICK = HZ / 10,
92 RTTSCALE = 8,
93 RTTDSCALE = 3,
94 RTTAVG_INIT = USEC_PER_SEC / 4 << RTTSCALE,
95 RTTDEV_INIT = RTTAVG_INIT / 4,
96
97 HARD_SCORN_SECS = 10,
98 MAX_TAINT = 1000,
99};
100
101struct buf {
102 ulong nframesout;
103 struct bio *bio;
104 struct bvec_iter iter;
105 struct request *rq;
106};
107
108enum frame_flags {
109 FFL_PROBE = 1,
110};
111
112struct frame {
113 struct list_head head;
114 u32 tag;
115 struct timeval sent;
116 u32 sent_jiffs;
117 ulong waited;
118 ulong waited_total;
119 struct aoetgt *t;
120 struct sk_buff *skb;
121 struct sk_buff *r_skb;
122 struct buf *buf;
123 struct bvec_iter iter;
124 char flags;
125};
126
127struct aoeif {
128 struct net_device *nd;
129 ulong lost;
130 int bcnt;
131};
132
133struct aoetgt {
134 unsigned char addr[6];
135 ushort nframes;
136 struct aoedev *d;
137 struct list_head ffree;
138 struct aoeif ifs[NAOEIFS];
139 struct aoeif *ifp;
140 ushort nout;
141 ushort maxout;
142 ushort next_cwnd;
143 ushort ssthresh;
144 ulong falloc;
145 int taint;
146 int minbcnt;
147 int wpkts, rpkts;
148 char nout_probes;
149};
150
151struct aoedev {
152 struct aoedev *next;
153 ulong sysminor;
154 ulong aoemajor;
155 u32 rttavg;
156 u32 rttdev;
157 u16 aoeminor;
158 u16 flags;
159 u16 nopen;
160 u16 fw_ver;
161 u16 lasttag;
162 u16 useme;
163 ulong ref;
164 struct work_struct work;
165 struct gendisk *gd;
166 struct dentry *debugfs;
167 struct request_queue *blkq;
168 struct hd_geometry geo;
169 sector_t ssize;
170 struct timer_list timer;
171 spinlock_t lock;
172 struct sk_buff_head skbpool;
173 mempool_t *bufpool;
174 struct {
175 struct buf *buf;
176 struct bio *nxbio;
177 struct request *rq;
178 } ip;
179 ulong maxbcnt;
180 struct list_head factive[NFACTIVE];
181 struct list_head rexmitq;
182 struct aoetgt **targets;
183 ulong ntargets;
184 struct aoetgt **tgt;
185 ulong kicked;
186 char ident[512];
187};
188
189
190struct ktstate {
191 struct completion rendez;
192 struct task_struct *task;
193 wait_queue_head_t *waitq;
194 int (*fn) (int);
195 char name[12];
196 spinlock_t *lock;
197 int id;
198 int active;
199};
200
201int aoeblk_init(void);
202void aoeblk_exit(void);
203void aoeblk_gdalloc(void *);
204void aoedisk_rm_debugfs(struct aoedev *d);
205void aoedisk_rm_sysfs(struct aoedev *d);
206
207int aoechr_init(void);
208void aoechr_exit(void);
209void aoechr_error(char *);
210
211void aoecmd_work(struct aoedev *d);
212void aoecmd_cfg(ushort aoemajor, unsigned char aoeminor);
213struct sk_buff *aoecmd_ata_rsp(struct sk_buff *);
214void aoecmd_cfg_rsp(struct sk_buff *);
215void aoecmd_sleepwork(struct work_struct *);
216void aoecmd_wreset(struct aoetgt *t);
217void aoecmd_cleanslate(struct aoedev *);
218void aoecmd_exit(void);
219int aoecmd_init(void);
220struct sk_buff *aoecmd_ata_id(struct aoedev *);
221void aoe_freetframe(struct frame *);
222void aoe_flush_iocq(void);
223void aoe_flush_iocq_by_index(int);
224void aoe_end_request(struct aoedev *, struct request *, int);
225int aoe_ktstart(struct ktstate *k);
226void aoe_ktstop(struct ktstate *k);
227
228int aoedev_init(void);
229void aoedev_exit(void);
230struct aoedev *aoedev_by_aoeaddr(ulong maj, int min, int do_alloc);
231void aoedev_downdev(struct aoedev *d);
232int aoedev_flush(const char __user *str, size_t size);
233void aoe_failbuf(struct aoedev *, struct buf *);
234void aoedev_put(struct aoedev *);
235
236int aoenet_init(void);
237void aoenet_exit(void);
238void aoenet_xmit(struct sk_buff_head *);
239int is_aoe_netif(struct net_device *ifp);
240int set_aoe_iflist(const char __user *str, size_t size);
241