Commit | Line | Data |
---|---|---|
0896b752 | 1 | /* |
1da177e4 LT |
2 | * iSCSI transport class definitions |
3 | * | |
4 | * Copyright (C) IBM Corporation, 2004 | |
0896b752 AA |
5 | * Copyright (C) Mike Christie, 2004 - 2005 |
6 | * Copyright (C) Dmitry Yusupov, 2004 - 2005 | |
7 | * Copyright (C) Alex Aizman, 2004 - 2005 | |
1da177e4 LT |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
22 | */ | |
23 | #include <linux/module.h> | |
0b950672 | 24 | #include <linux/mutex.h> |
5a0e3ad6 | 25 | #include <linux/slab.h> |
90eeb01a | 26 | #include <linux/bsg-lib.h> |
8d4a690c | 27 | #include <linux/idr.h> |
c6a4bb2e | 28 | #include <linux/list.h> |
0896b752 | 29 | #include <net/tcp.h> |
1da177e4 LT |
30 | #include <scsi/scsi.h> |
31 | #include <scsi/scsi_host.h> | |
32 | #include <scsi/scsi_device.h> | |
33 | #include <scsi/scsi_transport.h> | |
34 | #include <scsi/scsi_transport_iscsi.h> | |
0896b752 | 35 | #include <scsi/iscsi_if.h> |
c01be6dc | 36 | #include <scsi/scsi_cmnd.h> |
90eeb01a | 37 | #include <scsi/scsi_bsg_iscsi.h> |
1da177e4 | 38 | |
4c2133c8 | 39 | #define ISCSI_TRANSPORT_VERSION "2.0-870" |
1da177e4 | 40 | |
632248aa MC |
41 | static int dbg_session; |
42 | module_param_named(debug_session, dbg_session, int, | |
43 | S_IRUGO | S_IWUSR); | |
44 | MODULE_PARM_DESC(debug_session, | |
45 | "Turn on debugging for sessions in scsi_transport_iscsi " | |
46 | "module. Set to 1 to turn on, and zero to turn off. Default " | |
47 | "is off."); | |
48 | ||
49 | static int dbg_conn; | |
50 | module_param_named(debug_conn, dbg_conn, int, | |
51 | S_IRUGO | S_IWUSR); | |
52 | MODULE_PARM_DESC(debug_conn, | |
53 | "Turn on debugging for connections in scsi_transport_iscsi " | |
54 | "module. Set to 1 to turn on, and zero to turn off. Default " | |
55 | "is off."); | |
56 | ||
57 | #define ISCSI_DBG_TRANS_SESSION(_session, dbg_fmt, arg...) \ | |
58 | do { \ | |
59 | if (dbg_session) \ | |
60 | iscsi_cls_session_printk(KERN_INFO, _session, \ | |
61 | "%s: " dbg_fmt, \ | |
62 | __func__, ##arg); \ | |
63 | } while (0); | |
64 | ||
65 | #define ISCSI_DBG_TRANS_CONN(_conn, dbg_fmt, arg...) \ | |
66 | do { \ | |
67 | if (dbg_conn) \ | |
68 | iscsi_cls_conn_printk(KERN_INFO, _conn, \ | |
69 | "%s: " dbg_fmt, \ | |
70 | __func__, ##arg); \ | |
71 | } while (0); | |
72 | ||
1da177e4 LT |
73 | struct iscsi_internal { |
74 | struct scsi_transport_template t; | |
0896b752 AA |
75 | struct iscsi_transport *iscsi_transport; |
76 | struct list_head list; | |
ee959b00 | 77 | struct device dev; |
30a6c652 | 78 | |
0896b752 | 79 | struct transport_container conn_cont; |
0896b752 | 80 | struct transport_container session_cont; |
1da177e4 LT |
81 | }; |
82 | ||
41be1444 | 83 | static atomic_t iscsi_session_nr; /* sysfs session id for next new session */ |
d8bf541e | 84 | static struct workqueue_struct *iscsi_eh_timer_workq; |
b5c7a12d | 85 | |
8d4a690c | 86 | static DEFINE_IDA(iscsi_sess_ida); |
0896b752 AA |
87 | /* |
88 | * list of registered transports and lock that must | |
89 | * be held while accessing list. The iscsi_transport_lock must | |
0b950672 | 90 | * be acquired after the rx_queue_mutex. |
0896b752 AA |
91 | */ |
92 | static LIST_HEAD(iscsi_transports); | |
93 | static DEFINE_SPINLOCK(iscsi_transport_lock); | |
94 | ||
95 | #define to_iscsi_internal(tmpl) \ | |
96 | container_of(tmpl, struct iscsi_internal, t) | |
97 | ||
ee959b00 TJ |
98 | #define dev_to_iscsi_internal(_dev) \ |
99 | container_of(_dev, struct iscsi_internal, dev) | |
0896b752 | 100 | |
ee959b00 | 101 | static void iscsi_transport_release(struct device *dev) |
0896b752 | 102 | { |
ee959b00 | 103 | struct iscsi_internal *priv = dev_to_iscsi_internal(dev); |
0896b752 AA |
104 | kfree(priv); |
105 | } | |
1da177e4 | 106 | |
0896b752 AA |
107 | /* |
108 | * iscsi_transport_class represents the iscsi_transports that are | |
109 | * registered. | |
110 | */ | |
111 | static struct class iscsi_transport_class = { | |
112 | .name = "iscsi_transport", | |
ee959b00 | 113 | .dev_release = iscsi_transport_release, |
0896b752 AA |
114 | }; |
115 | ||
116 | static ssize_t | |
ee959b00 TJ |
117 | show_transport_handle(struct device *dev, struct device_attribute *attr, |
118 | char *buf) | |
0896b752 | 119 | { |
ee959b00 | 120 | struct iscsi_internal *priv = dev_to_iscsi_internal(dev); |
762e2bfa | 121 | return sprintf(buf, "%llu\n", (unsigned long long)iscsi_handle(priv->iscsi_transport)); |
0896b752 | 122 | } |
ee959b00 | 123 | static DEVICE_ATTR(handle, S_IRUGO, show_transport_handle, NULL); |
0896b752 AA |
124 | |
125 | #define show_transport_attr(name, format) \ | |
126 | static ssize_t \ | |
ee959b00 TJ |
127 | show_transport_##name(struct device *dev, \ |
128 | struct device_attribute *attr,char *buf) \ | |
0896b752 | 129 | { \ |
ee959b00 | 130 | struct iscsi_internal *priv = dev_to_iscsi_internal(dev); \ |
0896b752 AA |
131 | return sprintf(buf, format"\n", priv->iscsi_transport->name); \ |
132 | } \ | |
ee959b00 | 133 | static DEVICE_ATTR(name, S_IRUGO, show_transport_##name, NULL); |
0896b752 AA |
134 | |
135 | show_transport_attr(caps, "0x%x"); | |
0896b752 AA |
136 | |
137 | static struct attribute *iscsi_transport_attrs[] = { | |
ee959b00 TJ |
138 | &dev_attr_handle.attr, |
139 | &dev_attr_caps.attr, | |
0896b752 AA |
140 | NULL, |
141 | }; | |
142 | ||
143 | static struct attribute_group iscsi_transport_group = { | |
144 | .attrs = iscsi_transport_attrs, | |
145 | }; | |
146 | ||
d82ff9be MC |
147 | /* |
148 | * iSCSI endpoint attrs | |
149 | */ | |
150 | #define iscsi_dev_to_endpoint(_dev) \ | |
151 | container_of(_dev, struct iscsi_endpoint, dev) | |
152 | ||
153 | #define ISCSI_ATTR(_prefix,_name,_mode,_show,_store) \ | |
154 | struct device_attribute dev_attr_##_prefix##_##_name = \ | |
155 | __ATTR(_name,_mode,_show,_store) | |
156 | ||
157 | static void iscsi_endpoint_release(struct device *dev) | |
158 | { | |
159 | struct iscsi_endpoint *ep = iscsi_dev_to_endpoint(dev); | |
160 | kfree(ep); | |
161 | } | |
162 | ||
163 | static struct class iscsi_endpoint_class = { | |
164 | .name = "iscsi_endpoint", | |
165 | .dev_release = iscsi_endpoint_release, | |
166 | }; | |
167 | ||
168 | static ssize_t | |
169 | show_ep_handle(struct device *dev, struct device_attribute *attr, char *buf) | |
170 | { | |
171 | struct iscsi_endpoint *ep = iscsi_dev_to_endpoint(dev); | |
21536062 | 172 | return sprintf(buf, "%llu\n", (unsigned long long) ep->id); |
d82ff9be MC |
173 | } |
174 | static ISCSI_ATTR(ep, handle, S_IRUGO, show_ep_handle, NULL); | |
175 | ||
176 | static struct attribute *iscsi_endpoint_attrs[] = { | |
177 | &dev_attr_ep_handle.attr, | |
178 | NULL, | |
179 | }; | |
180 | ||
181 | static struct attribute_group iscsi_endpoint_group = { | |
182 | .attrs = iscsi_endpoint_attrs, | |
183 | }; | |
184 | ||
185 | #define ISCSI_MAX_EPID -1 | |
186 | ||
9f3b795a | 187 | static int iscsi_match_epid(struct device *dev, const void *data) |
d82ff9be MC |
188 | { |
189 | struct iscsi_endpoint *ep = iscsi_dev_to_endpoint(dev); | |
9f3b795a | 190 | const uint64_t *epid = data; |
d82ff9be MC |
191 | |
192 | return *epid == ep->id; | |
193 | } | |
194 | ||
195 | struct iscsi_endpoint * | |
196 | iscsi_create_endpoint(int dd_size) | |
197 | { | |
198 | struct device *dev; | |
199 | struct iscsi_endpoint *ep; | |
21536062 | 200 | uint64_t id; |
d82ff9be MC |
201 | int err; |
202 | ||
203 | for (id = 1; id < ISCSI_MAX_EPID; id++) { | |
695794ae | 204 | dev = class_find_device(&iscsi_endpoint_class, NULL, &id, |
d82ff9be MC |
205 | iscsi_match_epid); |
206 | if (!dev) | |
207 | break; | |
208 | } | |
209 | if (id == ISCSI_MAX_EPID) { | |
210 | printk(KERN_ERR "Too many connections. Max supported %u\n", | |
211 | ISCSI_MAX_EPID - 1); | |
212 | return NULL; | |
213 | } | |
214 | ||
215 | ep = kzalloc(sizeof(*ep) + dd_size, GFP_KERNEL); | |
216 | if (!ep) | |
217 | return NULL; | |
218 | ||
219 | ep->id = id; | |
220 | ep->dev.class = &iscsi_endpoint_class; | |
71610f55 | 221 | dev_set_name(&ep->dev, "ep-%llu", (unsigned long long) id); |
d82ff9be MC |
222 | err = device_register(&ep->dev); |
223 | if (err) | |
224 | goto free_ep; | |
225 | ||
226 | err = sysfs_create_group(&ep->dev.kobj, &iscsi_endpoint_group); | |
227 | if (err) | |
228 | goto unregister_dev; | |
229 | ||
230 | if (dd_size) | |
231 | ep->dd_data = &ep[1]; | |
232 | return ep; | |
233 | ||
234 | unregister_dev: | |
235 | device_unregister(&ep->dev); | |
236 | return NULL; | |
237 | ||
238 | free_ep: | |
239 | kfree(ep); | |
240 | return NULL; | |
241 | } | |
242 | EXPORT_SYMBOL_GPL(iscsi_create_endpoint); | |
243 | ||
244 | void iscsi_destroy_endpoint(struct iscsi_endpoint *ep) | |
245 | { | |
246 | sysfs_remove_group(&ep->dev.kobj, &iscsi_endpoint_group); | |
247 | device_unregister(&ep->dev); | |
248 | } | |
249 | EXPORT_SYMBOL_GPL(iscsi_destroy_endpoint); | |
250 | ||
251 | struct iscsi_endpoint *iscsi_lookup_endpoint(u64 handle) | |
252 | { | |
f80f868e | 253 | struct iscsi_endpoint *ep; |
d82ff9be MC |
254 | struct device *dev; |
255 | ||
695794ae | 256 | dev = class_find_device(&iscsi_endpoint_class, NULL, &handle, |
d82ff9be MC |
257 | iscsi_match_epid); |
258 | if (!dev) | |
259 | return NULL; | |
260 | ||
f80f868e MC |
261 | ep = iscsi_dev_to_endpoint(dev); |
262 | /* | |
263 | * we can drop this now because the interface will prevent | |
264 | * removals and lookups from racing. | |
265 | */ | |
266 | put_device(dev); | |
267 | return ep; | |
d82ff9be MC |
268 | } |
269 | EXPORT_SYMBOL_GPL(iscsi_lookup_endpoint); | |
270 | ||
8d07913d MC |
271 | /* |
272 | * Interface to display network param to sysfs | |
273 | */ | |
274 | ||
275 | static void iscsi_iface_release(struct device *dev) | |
276 | { | |
277 | struct iscsi_iface *iface = iscsi_dev_to_iface(dev); | |
278 | struct device *parent = iface->dev.parent; | |
279 | ||
280 | kfree(iface); | |
281 | put_device(parent); | |
282 | } | |
283 | ||
284 | ||
285 | static struct class iscsi_iface_class = { | |
286 | .name = "iscsi_iface", | |
287 | .dev_release = iscsi_iface_release, | |
288 | }; | |
289 | ||
290 | #define ISCSI_IFACE_ATTR(_prefix, _name, _mode, _show, _store) \ | |
291 | struct device_attribute dev_attr_##_prefix##_##_name = \ | |
292 | __ATTR(_name, _mode, _show, _store) | |
293 | ||
294 | /* iface attrs show */ | |
295 | #define iscsi_iface_attr_show(type, name, param_type, param) \ | |
296 | static ssize_t \ | |
297 | show_##type##_##name(struct device *dev, struct device_attribute *attr, \ | |
298 | char *buf) \ | |
299 | { \ | |
300 | struct iscsi_iface *iface = iscsi_dev_to_iface(dev); \ | |
301 | struct iscsi_transport *t = iface->transport; \ | |
302 | return t->get_iface_param(iface, param_type, param, buf); \ | |
303 | } \ | |
304 | ||
305 | #define iscsi_iface_net_attr(type, name, param) \ | |
306 | iscsi_iface_attr_show(type, name, ISCSI_NET_PARAM, param) \ | |
307 | static ISCSI_IFACE_ATTR(type, name, S_IRUGO, show_##type##_##name, NULL); | |
308 | ||
309 | /* generic read only ipvi4 attribute */ | |
310 | iscsi_iface_net_attr(ipv4_iface, ipaddress, ISCSI_NET_PARAM_IPV4_ADDR); | |
311 | iscsi_iface_net_attr(ipv4_iface, gateway, ISCSI_NET_PARAM_IPV4_GW); | |
312 | iscsi_iface_net_attr(ipv4_iface, subnet, ISCSI_NET_PARAM_IPV4_SUBNET); | |
313 | iscsi_iface_net_attr(ipv4_iface, bootproto, ISCSI_NET_PARAM_IPV4_BOOTPROTO); | |
314 | ||
315 | /* generic read only ipv6 attribute */ | |
316 | iscsi_iface_net_attr(ipv6_iface, ipaddress, ISCSI_NET_PARAM_IPV6_ADDR); | |
317 | iscsi_iface_net_attr(ipv6_iface, link_local_addr, ISCSI_NET_PARAM_IPV6_LINKLOCAL); | |
318 | iscsi_iface_net_attr(ipv6_iface, router_addr, ISCSI_NET_PARAM_IPV6_ROUTER); | |
319 | iscsi_iface_net_attr(ipv6_iface, ipaddr_autocfg, | |
320 | ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG); | |
88f4f517 | 321 | iscsi_iface_net_attr(ipv6_iface, link_local_autocfg, |
8d07913d MC |
322 | ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG); |
323 | ||
324 | /* common read only iface attribute */ | |
325 | iscsi_iface_net_attr(iface, enabled, ISCSI_NET_PARAM_IFACE_ENABLE); | |
2d63673b | 326 | iscsi_iface_net_attr(iface, vlan_id, ISCSI_NET_PARAM_VLAN_ID); |
4223b9e9 MC |
327 | iscsi_iface_net_attr(iface, vlan_priority, ISCSI_NET_PARAM_VLAN_PRIORITY); |
328 | iscsi_iface_net_attr(iface, vlan_enabled, ISCSI_NET_PARAM_VLAN_ENABLED); | |
8c7d40fb | 329 | iscsi_iface_net_attr(iface, mtu, ISCSI_NET_PARAM_MTU); |
fcb5124e | 330 | iscsi_iface_net_attr(iface, port, ISCSI_NET_PARAM_PORT); |
8d07913d | 331 | |
587a1f16 | 332 | static umode_t iscsi_iface_attr_is_visible(struct kobject *kobj, |
8d07913d MC |
333 | struct attribute *attr, int i) |
334 | { | |
335 | struct device *dev = container_of(kobj, struct device, kobj); | |
336 | struct iscsi_iface *iface = iscsi_dev_to_iface(dev); | |
337 | struct iscsi_transport *t = iface->transport; | |
b78dbba0 | 338 | int param; |
8d07913d MC |
339 | |
340 | if (attr == &dev_attr_iface_enabled.attr) | |
b78dbba0 | 341 | param = ISCSI_NET_PARAM_IFACE_ENABLE; |
2d63673b | 342 | else if (attr == &dev_attr_iface_vlan_id.attr) |
b78dbba0 | 343 | param = ISCSI_NET_PARAM_VLAN_ID; |
4223b9e9 MC |
344 | else if (attr == &dev_attr_iface_vlan_priority.attr) |
345 | param = ISCSI_NET_PARAM_VLAN_PRIORITY; | |
346 | else if (attr == &dev_attr_iface_vlan_enabled.attr) | |
347 | param = ISCSI_NET_PARAM_VLAN_ENABLED; | |
8c7d40fb VC |
348 | else if (attr == &dev_attr_iface_mtu.attr) |
349 | param = ISCSI_NET_PARAM_MTU; | |
fcb5124e VC |
350 | else if (attr == &dev_attr_iface_port.attr) |
351 | param = ISCSI_NET_PARAM_PORT; | |
b78dbba0 | 352 | else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) { |
8d07913d | 353 | if (attr == &dev_attr_ipv4_iface_ipaddress.attr) |
b78dbba0 | 354 | param = ISCSI_NET_PARAM_IPV4_ADDR; |
8d07913d | 355 | else if (attr == &dev_attr_ipv4_iface_gateway.attr) |
b78dbba0 | 356 | param = ISCSI_NET_PARAM_IPV4_GW; |
8d07913d | 357 | else if (attr == &dev_attr_ipv4_iface_subnet.attr) |
b78dbba0 | 358 | param = ISCSI_NET_PARAM_IPV4_SUBNET; |
8d07913d | 359 | else if (attr == &dev_attr_ipv4_iface_bootproto.attr) |
b78dbba0 MC |
360 | param = ISCSI_NET_PARAM_IPV4_BOOTPROTO; |
361 | else | |
362 | return 0; | |
8d07913d MC |
363 | } else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6) { |
364 | if (attr == &dev_attr_ipv6_iface_ipaddress.attr) | |
b78dbba0 | 365 | param = ISCSI_NET_PARAM_IPV6_ADDR; |
8d07913d | 366 | else if (attr == &dev_attr_ipv6_iface_link_local_addr.attr) |
b78dbba0 | 367 | param = ISCSI_NET_PARAM_IPV6_LINKLOCAL; |
8d07913d | 368 | else if (attr == &dev_attr_ipv6_iface_router_addr.attr) |
b78dbba0 | 369 | param = ISCSI_NET_PARAM_IPV6_ROUTER; |
8d07913d | 370 | else if (attr == &dev_attr_ipv6_iface_ipaddr_autocfg.attr) |
b78dbba0 | 371 | param = ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG; |
88f4f517 | 372 | else if (attr == &dev_attr_ipv6_iface_link_local_autocfg.attr) |
b78dbba0 MC |
373 | param = ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG; |
374 | else | |
375 | return 0; | |
376 | } else { | |
377 | WARN_ONCE(1, "Invalid iface attr"); | |
378 | return 0; | |
8d07913d MC |
379 | } |
380 | ||
b78dbba0 | 381 | return t->attr_is_visible(ISCSI_NET_PARAM, param); |
8d07913d MC |
382 | } |
383 | ||
384 | static struct attribute *iscsi_iface_attrs[] = { | |
385 | &dev_attr_iface_enabled.attr, | |
2d63673b | 386 | &dev_attr_iface_vlan_id.attr, |
4223b9e9 MC |
387 | &dev_attr_iface_vlan_priority.attr, |
388 | &dev_attr_iface_vlan_enabled.attr, | |
8d07913d MC |
389 | &dev_attr_ipv4_iface_ipaddress.attr, |
390 | &dev_attr_ipv4_iface_gateway.attr, | |
391 | &dev_attr_ipv4_iface_subnet.attr, | |
392 | &dev_attr_ipv4_iface_bootproto.attr, | |
393 | &dev_attr_ipv6_iface_ipaddress.attr, | |
394 | &dev_attr_ipv6_iface_link_local_addr.attr, | |
395 | &dev_attr_ipv6_iface_router_addr.attr, | |
396 | &dev_attr_ipv6_iface_ipaddr_autocfg.attr, | |
88f4f517 | 397 | &dev_attr_ipv6_iface_link_local_autocfg.attr, |
8c7d40fb | 398 | &dev_attr_iface_mtu.attr, |
fcb5124e | 399 | &dev_attr_iface_port.attr, |
8d07913d MC |
400 | NULL, |
401 | }; | |
402 | ||
403 | static struct attribute_group iscsi_iface_group = { | |
404 | .attrs = iscsi_iface_attrs, | |
405 | .is_visible = iscsi_iface_attr_is_visible, | |
406 | }; | |
407 | ||
408 | struct iscsi_iface * | |
409 | iscsi_create_iface(struct Scsi_Host *shost, struct iscsi_transport *transport, | |
410 | uint32_t iface_type, uint32_t iface_num, int dd_size) | |
411 | { | |
412 | struct iscsi_iface *iface; | |
413 | int err; | |
414 | ||
415 | iface = kzalloc(sizeof(*iface) + dd_size, GFP_KERNEL); | |
416 | if (!iface) | |
417 | return NULL; | |
418 | ||
419 | iface->transport = transport; | |
420 | iface->iface_type = iface_type; | |
421 | iface->iface_num = iface_num; | |
422 | iface->dev.release = iscsi_iface_release; | |
423 | iface->dev.class = &iscsi_iface_class; | |
424 | /* parent reference released in iscsi_iface_release */ | |
425 | iface->dev.parent = get_device(&shost->shost_gendev); | |
426 | if (iface_type == ISCSI_IFACE_TYPE_IPV4) | |
427 | dev_set_name(&iface->dev, "ipv4-iface-%u-%u", shost->host_no, | |
428 | iface_num); | |
429 | else | |
430 | dev_set_name(&iface->dev, "ipv6-iface-%u-%u", shost->host_no, | |
431 | iface_num); | |
432 | ||
433 | err = device_register(&iface->dev); | |
434 | if (err) | |
435 | goto free_iface; | |
436 | ||
437 | err = sysfs_create_group(&iface->dev.kobj, &iscsi_iface_group); | |
438 | if (err) | |
439 | goto unreg_iface; | |
440 | ||
441 | if (dd_size) | |
442 | iface->dd_data = &iface[1]; | |
443 | return iface; | |
444 | ||
445 | unreg_iface: | |
446 | device_unregister(&iface->dev); | |
447 | return NULL; | |
448 | ||
449 | free_iface: | |
450 | put_device(iface->dev.parent); | |
451 | kfree(iface); | |
452 | return NULL; | |
453 | } | |
454 | EXPORT_SYMBOL_GPL(iscsi_create_iface); | |
455 | ||
456 | void iscsi_destroy_iface(struct iscsi_iface *iface) | |
457 | { | |
458 | sysfs_remove_group(&iface->dev.kobj, &iscsi_iface_group); | |
459 | device_unregister(&iface->dev); | |
460 | } | |
461 | EXPORT_SYMBOL_GPL(iscsi_destroy_iface); | |
462 | ||
c6a4bb2e AC |
463 | /* |
464 | * Interface to display flash node params to sysfs | |
465 | */ | |
466 | ||
467 | #define ISCSI_FLASHNODE_ATTR(_prefix, _name, _mode, _show, _store) \ | |
468 | struct device_attribute dev_attr_##_prefix##_##_name = \ | |
469 | __ATTR(_name, _mode, _show, _store) | |
470 | ||
471 | /* flash node session attrs show */ | |
472 | #define iscsi_flashnode_sess_attr_show(type, name, param) \ | |
473 | static ssize_t \ | |
474 | show_##type##_##name(struct device *dev, struct device_attribute *attr, \ | |
475 | char *buf) \ | |
476 | { \ | |
477 | struct iscsi_bus_flash_session *fnode_sess = \ | |
478 | iscsi_dev_to_flash_session(dev);\ | |
479 | struct iscsi_transport *t = fnode_sess->transport; \ | |
480 | return t->get_flashnode_param(fnode_sess, param, buf); \ | |
481 | } \ | |
482 | ||
483 | ||
484 | #define iscsi_flashnode_sess_attr(type, name, param) \ | |
485 | iscsi_flashnode_sess_attr_show(type, name, param) \ | |
486 | static ISCSI_FLASHNODE_ATTR(type, name, S_IRUGO, \ | |
487 | show_##type##_##name, NULL); | |
488 | ||
489 | /* Flash node session attributes */ | |
490 | ||
491 | iscsi_flashnode_sess_attr(fnode, auto_snd_tgt_disable, | |
492 | ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE); | |
493 | iscsi_flashnode_sess_attr(fnode, discovery_session, | |
494 | ISCSI_FLASHNODE_DISCOVERY_SESS); | |
495 | iscsi_flashnode_sess_attr(fnode, portal_type, ISCSI_FLASHNODE_PORTAL_TYPE); | |
496 | iscsi_flashnode_sess_attr(fnode, entry_enable, ISCSI_FLASHNODE_ENTRY_EN); | |
497 | iscsi_flashnode_sess_attr(fnode, immediate_data, ISCSI_FLASHNODE_IMM_DATA_EN); | |
498 | iscsi_flashnode_sess_attr(fnode, initial_r2t, ISCSI_FLASHNODE_INITIAL_R2T_EN); | |
499 | iscsi_flashnode_sess_attr(fnode, data_seq_in_order, | |
500 | ISCSI_FLASHNODE_DATASEQ_INORDER); | |
501 | iscsi_flashnode_sess_attr(fnode, data_pdu_in_order, | |
502 | ISCSI_FLASHNODE_PDU_INORDER); | |
503 | iscsi_flashnode_sess_attr(fnode, chap_auth, ISCSI_FLASHNODE_CHAP_AUTH_EN); | |
504 | iscsi_flashnode_sess_attr(fnode, discovery_logout, | |
505 | ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN); | |
506 | iscsi_flashnode_sess_attr(fnode, bidi_chap, ISCSI_FLASHNODE_BIDI_CHAP_EN); | |
507 | iscsi_flashnode_sess_attr(fnode, discovery_auth_optional, | |
508 | ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL); | |
509 | iscsi_flashnode_sess_attr(fnode, erl, ISCSI_FLASHNODE_ERL); | |
510 | iscsi_flashnode_sess_attr(fnode, first_burst_len, ISCSI_FLASHNODE_FIRST_BURST); | |
511 | iscsi_flashnode_sess_attr(fnode, def_time2wait, ISCSI_FLASHNODE_DEF_TIME2WAIT); | |
512 | iscsi_flashnode_sess_attr(fnode, def_time2retain, | |
513 | ISCSI_FLASHNODE_DEF_TIME2RETAIN); | |
514 | iscsi_flashnode_sess_attr(fnode, max_outstanding_r2t, ISCSI_FLASHNODE_MAX_R2T); | |
515 | iscsi_flashnode_sess_attr(fnode, isid, ISCSI_FLASHNODE_ISID); | |
516 | iscsi_flashnode_sess_attr(fnode, tsid, ISCSI_FLASHNODE_TSID); | |
517 | iscsi_flashnode_sess_attr(fnode, max_burst_len, ISCSI_FLASHNODE_MAX_BURST); | |
518 | iscsi_flashnode_sess_attr(fnode, def_taskmgmt_tmo, | |
519 | ISCSI_FLASHNODE_DEF_TASKMGMT_TMO); | |
520 | iscsi_flashnode_sess_attr(fnode, targetalias, ISCSI_FLASHNODE_ALIAS); | |
521 | iscsi_flashnode_sess_attr(fnode, targetname, ISCSI_FLASHNODE_NAME); | |
522 | iscsi_flashnode_sess_attr(fnode, tpgt, ISCSI_FLASHNODE_TPGT); | |
523 | iscsi_flashnode_sess_attr(fnode, discovery_parent_idx, | |
524 | ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX); | |
525 | iscsi_flashnode_sess_attr(fnode, discovery_parent_type, | |
526 | ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE); | |
527 | iscsi_flashnode_sess_attr(fnode, chap_in_idx, ISCSI_FLASHNODE_CHAP_IN_IDX); | |
528 | iscsi_flashnode_sess_attr(fnode, chap_out_idx, ISCSI_FLASHNODE_CHAP_OUT_IDX); | |
529 | iscsi_flashnode_sess_attr(fnode, username, ISCSI_FLASHNODE_USERNAME); | |
530 | iscsi_flashnode_sess_attr(fnode, username_in, ISCSI_FLASHNODE_USERNAME_IN); | |
531 | iscsi_flashnode_sess_attr(fnode, password, ISCSI_FLASHNODE_PASSWORD); | |
532 | iscsi_flashnode_sess_attr(fnode, password_in, ISCSI_FLASHNODE_PASSWORD_IN); | |
533 | iscsi_flashnode_sess_attr(fnode, is_boot_target, ISCSI_FLASHNODE_IS_BOOT_TGT); | |
534 | ||
535 | static struct attribute *iscsi_flashnode_sess_attrs[] = { | |
536 | &dev_attr_fnode_auto_snd_tgt_disable.attr, | |
537 | &dev_attr_fnode_discovery_session.attr, | |
538 | &dev_attr_fnode_portal_type.attr, | |
539 | &dev_attr_fnode_entry_enable.attr, | |
540 | &dev_attr_fnode_immediate_data.attr, | |
541 | &dev_attr_fnode_initial_r2t.attr, | |
542 | &dev_attr_fnode_data_seq_in_order.attr, | |
543 | &dev_attr_fnode_data_pdu_in_order.attr, | |
544 | &dev_attr_fnode_chap_auth.attr, | |
545 | &dev_attr_fnode_discovery_logout.attr, | |
546 | &dev_attr_fnode_bidi_chap.attr, | |
547 | &dev_attr_fnode_discovery_auth_optional.attr, | |
548 | &dev_attr_fnode_erl.attr, | |
549 | &dev_attr_fnode_first_burst_len.attr, | |
550 | &dev_attr_fnode_def_time2wait.attr, | |
551 | &dev_attr_fnode_def_time2retain.attr, | |
552 | &dev_attr_fnode_max_outstanding_r2t.attr, | |
553 | &dev_attr_fnode_isid.attr, | |
554 | &dev_attr_fnode_tsid.attr, | |
555 | &dev_attr_fnode_max_burst_len.attr, | |
556 | &dev_attr_fnode_def_taskmgmt_tmo.attr, | |
557 | &dev_attr_fnode_targetalias.attr, | |
558 | &dev_attr_fnode_targetname.attr, | |
559 | &dev_attr_fnode_tpgt.attr, | |
560 | &dev_attr_fnode_discovery_parent_idx.attr, | |
561 | &dev_attr_fnode_discovery_parent_type.attr, | |
562 | &dev_attr_fnode_chap_in_idx.attr, | |
563 | &dev_attr_fnode_chap_out_idx.attr, | |
564 | &dev_attr_fnode_username.attr, | |
565 | &dev_attr_fnode_username_in.attr, | |
566 | &dev_attr_fnode_password.attr, | |
567 | &dev_attr_fnode_password_in.attr, | |
568 | &dev_attr_fnode_is_boot_target.attr, | |
569 | NULL, | |
570 | }; | |
571 | ||
572 | static umode_t iscsi_flashnode_sess_attr_is_visible(struct kobject *kobj, | |
573 | struct attribute *attr, | |
574 | int i) | |
575 | { | |
576 | struct device *dev = container_of(kobj, struct device, kobj); | |
577 | struct iscsi_bus_flash_session *fnode_sess = | |
578 | iscsi_dev_to_flash_session(dev); | |
579 | struct iscsi_transport *t = fnode_sess->transport; | |
580 | int param; | |
581 | ||
582 | if (attr == &dev_attr_fnode_auto_snd_tgt_disable.attr) { | |
583 | param = ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE; | |
584 | } else if (attr == &dev_attr_fnode_discovery_session.attr) { | |
585 | param = ISCSI_FLASHNODE_DISCOVERY_SESS; | |
586 | } else if (attr == &dev_attr_fnode_portal_type.attr) { | |
587 | param = ISCSI_FLASHNODE_PORTAL_TYPE; | |
588 | } else if (attr == &dev_attr_fnode_entry_enable.attr) { | |
589 | param = ISCSI_FLASHNODE_ENTRY_EN; | |
590 | } else if (attr == &dev_attr_fnode_immediate_data.attr) { | |
591 | param = ISCSI_FLASHNODE_IMM_DATA_EN; | |
592 | } else if (attr == &dev_attr_fnode_initial_r2t.attr) { | |
593 | param = ISCSI_FLASHNODE_INITIAL_R2T_EN; | |
594 | } else if (attr == &dev_attr_fnode_data_seq_in_order.attr) { | |
595 | param = ISCSI_FLASHNODE_DATASEQ_INORDER; | |
596 | } else if (attr == &dev_attr_fnode_data_pdu_in_order.attr) { | |
597 | param = ISCSI_FLASHNODE_PDU_INORDER; | |
598 | } else if (attr == &dev_attr_fnode_chap_auth.attr) { | |
599 | param = ISCSI_FLASHNODE_CHAP_AUTH_EN; | |
600 | } else if (attr == &dev_attr_fnode_discovery_logout.attr) { | |
601 | param = ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN; | |
602 | } else if (attr == &dev_attr_fnode_bidi_chap.attr) { | |
603 | param = ISCSI_FLASHNODE_BIDI_CHAP_EN; | |
604 | } else if (attr == &dev_attr_fnode_discovery_auth_optional.attr) { | |
605 | param = ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL; | |
606 | } else if (attr == &dev_attr_fnode_erl.attr) { | |
607 | param = ISCSI_FLASHNODE_ERL; | |
608 | } else if (attr == &dev_attr_fnode_first_burst_len.attr) { | |
609 | param = ISCSI_FLASHNODE_FIRST_BURST; | |
610 | } else if (attr == &dev_attr_fnode_def_time2wait.attr) { | |
611 | param = ISCSI_FLASHNODE_DEF_TIME2WAIT; | |
612 | } else if (attr == &dev_attr_fnode_def_time2retain.attr) { | |
613 | param = ISCSI_FLASHNODE_DEF_TIME2RETAIN; | |
614 | } else if (attr == &dev_attr_fnode_max_outstanding_r2t.attr) { | |
615 | param = ISCSI_FLASHNODE_MAX_R2T; | |
616 | } else if (attr == &dev_attr_fnode_isid.attr) { | |
617 | param = ISCSI_FLASHNODE_ISID; | |
618 | } else if (attr == &dev_attr_fnode_tsid.attr) { | |
619 | param = ISCSI_FLASHNODE_TSID; | |
620 | } else if (attr == &dev_attr_fnode_max_burst_len.attr) { | |
621 | param = ISCSI_FLASHNODE_MAX_BURST; | |
622 | } else if (attr == &dev_attr_fnode_def_taskmgmt_tmo.attr) { | |
623 | param = ISCSI_FLASHNODE_DEF_TASKMGMT_TMO; | |
624 | } else if (attr == &dev_attr_fnode_targetalias.attr) { | |
625 | param = ISCSI_FLASHNODE_ALIAS; | |
626 | } else if (attr == &dev_attr_fnode_targetname.attr) { | |
627 | param = ISCSI_FLASHNODE_NAME; | |
628 | } else if (attr == &dev_attr_fnode_tpgt.attr) { | |
629 | param = ISCSI_FLASHNODE_TPGT; | |
630 | } else if (attr == &dev_attr_fnode_discovery_parent_idx.attr) { | |
631 | param = ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX; | |
632 | } else if (attr == &dev_attr_fnode_discovery_parent_type.attr) { | |
633 | param = ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE; | |
634 | } else if (attr == &dev_attr_fnode_chap_in_idx.attr) { | |
635 | param = ISCSI_FLASHNODE_CHAP_IN_IDX; | |
636 | } else if (attr == &dev_attr_fnode_chap_out_idx.attr) { | |
637 | param = ISCSI_FLASHNODE_CHAP_OUT_IDX; | |
638 | } else if (attr == &dev_attr_fnode_username.attr) { | |
639 | param = ISCSI_FLASHNODE_USERNAME; | |
640 | } else if (attr == &dev_attr_fnode_username_in.attr) { | |
641 | param = ISCSI_FLASHNODE_USERNAME_IN; | |
642 | } else if (attr == &dev_attr_fnode_password.attr) { | |
643 | param = ISCSI_FLASHNODE_PASSWORD; | |
644 | } else if (attr == &dev_attr_fnode_password_in.attr) { | |
645 | param = ISCSI_FLASHNODE_PASSWORD_IN; | |
646 | } else if (attr == &dev_attr_fnode_is_boot_target.attr) { | |
647 | param = ISCSI_FLASHNODE_IS_BOOT_TGT; | |
648 | } else { | |
649 | WARN_ONCE(1, "Invalid flashnode session attr"); | |
650 | return 0; | |
651 | } | |
652 | ||
653 | return t->attr_is_visible(ISCSI_FLASHNODE_PARAM, param); | |
654 | } | |
655 | ||
656 | static struct attribute_group iscsi_flashnode_sess_attr_group = { | |
657 | .attrs = iscsi_flashnode_sess_attrs, | |
658 | .is_visible = iscsi_flashnode_sess_attr_is_visible, | |
659 | }; | |
660 | ||
661 | static const struct attribute_group *iscsi_flashnode_sess_attr_groups[] = { | |
662 | &iscsi_flashnode_sess_attr_group, | |
663 | NULL, | |
664 | }; | |
665 | ||
666 | static void iscsi_flashnode_sess_release(struct device *dev) | |
667 | { | |
668 | struct iscsi_bus_flash_session *fnode_sess = | |
669 | iscsi_dev_to_flash_session(dev); | |
670 | ||
671 | kfree(fnode_sess->targetname); | |
672 | kfree(fnode_sess->targetalias); | |
673 | kfree(fnode_sess->portal_type); | |
674 | kfree(fnode_sess); | |
675 | } | |
676 | ||
677 | struct device_type iscsi_flashnode_sess_dev_type = { | |
678 | .name = "iscsi_flashnode_sess_dev_type", | |
679 | .groups = iscsi_flashnode_sess_attr_groups, | |
680 | .release = iscsi_flashnode_sess_release, | |
681 | }; | |
682 | ||
683 | /* flash node connection attrs show */ | |
684 | #define iscsi_flashnode_conn_attr_show(type, name, param) \ | |
685 | static ssize_t \ | |
686 | show_##type##_##name(struct device *dev, struct device_attribute *attr, \ | |
687 | char *buf) \ | |
688 | { \ | |
689 | struct iscsi_bus_flash_conn *fnode_conn = iscsi_dev_to_flash_conn(dev);\ | |
690 | struct iscsi_bus_flash_session *fnode_sess = \ | |
691 | iscsi_flash_conn_to_flash_session(fnode_conn);\ | |
692 | struct iscsi_transport *t = fnode_conn->transport; \ | |
693 | return t->get_flashnode_param(fnode_sess, param, buf); \ | |
694 | } \ | |
695 | ||
696 | ||
697 | #define iscsi_flashnode_conn_attr(type, name, param) \ | |
698 | iscsi_flashnode_conn_attr_show(type, name, param) \ | |
699 | static ISCSI_FLASHNODE_ATTR(type, name, S_IRUGO, \ | |
700 | show_##type##_##name, NULL); | |
701 | ||
702 | /* Flash node connection attributes */ | |
703 | ||
704 | iscsi_flashnode_conn_attr(fnode, is_fw_assigned_ipv6, | |
705 | ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6); | |
706 | iscsi_flashnode_conn_attr(fnode, header_digest, ISCSI_FLASHNODE_HDR_DGST_EN); | |
707 | iscsi_flashnode_conn_attr(fnode, data_digest, ISCSI_FLASHNODE_DATA_DGST_EN); | |
708 | iscsi_flashnode_conn_attr(fnode, snack_req, ISCSI_FLASHNODE_SNACK_REQ_EN); | |
709 | iscsi_flashnode_conn_attr(fnode, tcp_timestamp_stat, | |
710 | ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT); | |
711 | iscsi_flashnode_conn_attr(fnode, tcp_nagle_disable, | |
712 | ISCSI_FLASHNODE_TCP_NAGLE_DISABLE); | |
713 | iscsi_flashnode_conn_attr(fnode, tcp_wsf_disable, | |
714 | ISCSI_FLASHNODE_TCP_WSF_DISABLE); | |
715 | iscsi_flashnode_conn_attr(fnode, tcp_timer_scale, | |
716 | ISCSI_FLASHNODE_TCP_TIMER_SCALE); | |
717 | iscsi_flashnode_conn_attr(fnode, tcp_timestamp_enable, | |
718 | ISCSI_FLASHNODE_TCP_TIMESTAMP_EN); | |
719 | iscsi_flashnode_conn_attr(fnode, fragment_disable, | |
720 | ISCSI_FLASHNODE_IP_FRAG_DISABLE); | |
721 | iscsi_flashnode_conn_attr(fnode, keepalive_tmo, ISCSI_FLASHNODE_KEEPALIVE_TMO); | |
722 | iscsi_flashnode_conn_attr(fnode, port, ISCSI_FLASHNODE_PORT); | |
723 | iscsi_flashnode_conn_attr(fnode, ipaddress, ISCSI_FLASHNODE_IPADDR); | |
724 | iscsi_flashnode_conn_attr(fnode, max_recv_dlength, | |
725 | ISCSI_FLASHNODE_MAX_RECV_DLENGTH); | |
726 | iscsi_flashnode_conn_attr(fnode, max_xmit_dlength, | |
727 | ISCSI_FLASHNODE_MAX_XMIT_DLENGTH); | |
728 | iscsi_flashnode_conn_attr(fnode, local_port, ISCSI_FLASHNODE_LOCAL_PORT); | |
729 | iscsi_flashnode_conn_attr(fnode, ipv4_tos, ISCSI_FLASHNODE_IPV4_TOS); | |
730 | iscsi_flashnode_conn_attr(fnode, ipv6_traffic_class, ISCSI_FLASHNODE_IPV6_TC); | |
731 | iscsi_flashnode_conn_attr(fnode, ipv6_flow_label, | |
732 | ISCSI_FLASHNODE_IPV6_FLOW_LABEL); | |
733 | iscsi_flashnode_conn_attr(fnode, redirect_ipaddr, | |
734 | ISCSI_FLASHNODE_REDIRECT_IPADDR); | |
735 | iscsi_flashnode_conn_attr(fnode, max_segment_size, | |
736 | ISCSI_FLASHNODE_MAX_SEGMENT_SIZE); | |
737 | iscsi_flashnode_conn_attr(fnode, link_local_ipv6, | |
738 | ISCSI_FLASHNODE_LINK_LOCAL_IPV6); | |
739 | iscsi_flashnode_conn_attr(fnode, tcp_xmit_wsf, ISCSI_FLASHNODE_TCP_XMIT_WSF); | |
740 | iscsi_flashnode_conn_attr(fnode, tcp_recv_wsf, ISCSI_FLASHNODE_TCP_RECV_WSF); | |
741 | iscsi_flashnode_conn_attr(fnode, statsn, ISCSI_FLASHNODE_STATSN); | |
742 | iscsi_flashnode_conn_attr(fnode, exp_statsn, ISCSI_FLASHNODE_EXP_STATSN); | |
743 | ||
744 | static struct attribute *iscsi_flashnode_conn_attrs[] = { | |
745 | &dev_attr_fnode_is_fw_assigned_ipv6.attr, | |
746 | &dev_attr_fnode_header_digest.attr, | |
747 | &dev_attr_fnode_data_digest.attr, | |
748 | &dev_attr_fnode_snack_req.attr, | |
749 | &dev_attr_fnode_tcp_timestamp_stat.attr, | |
750 | &dev_attr_fnode_tcp_nagle_disable.attr, | |
751 | &dev_attr_fnode_tcp_wsf_disable.attr, | |
752 | &dev_attr_fnode_tcp_timer_scale.attr, | |
753 | &dev_attr_fnode_tcp_timestamp_enable.attr, | |
754 | &dev_attr_fnode_fragment_disable.attr, | |
755 | &dev_attr_fnode_max_recv_dlength.attr, | |
756 | &dev_attr_fnode_max_xmit_dlength.attr, | |
757 | &dev_attr_fnode_keepalive_tmo.attr, | |
758 | &dev_attr_fnode_port.attr, | |
759 | &dev_attr_fnode_ipaddress.attr, | |
760 | &dev_attr_fnode_redirect_ipaddr.attr, | |
761 | &dev_attr_fnode_max_segment_size.attr, | |
762 | &dev_attr_fnode_local_port.attr, | |
763 | &dev_attr_fnode_ipv4_tos.attr, | |
764 | &dev_attr_fnode_ipv6_traffic_class.attr, | |
765 | &dev_attr_fnode_ipv6_flow_label.attr, | |
766 | &dev_attr_fnode_link_local_ipv6.attr, | |
767 | &dev_attr_fnode_tcp_xmit_wsf.attr, | |
768 | &dev_attr_fnode_tcp_recv_wsf.attr, | |
769 | &dev_attr_fnode_statsn.attr, | |
770 | &dev_attr_fnode_exp_statsn.attr, | |
771 | NULL, | |
772 | }; | |
773 | ||
774 | static umode_t iscsi_flashnode_conn_attr_is_visible(struct kobject *kobj, | |
775 | struct attribute *attr, | |
776 | int i) | |
777 | { | |
778 | struct device *dev = container_of(kobj, struct device, kobj); | |
779 | struct iscsi_bus_flash_conn *fnode_conn = iscsi_dev_to_flash_conn(dev); | |
780 | struct iscsi_transport *t = fnode_conn->transport; | |
781 | int param; | |
782 | ||
783 | if (attr == &dev_attr_fnode_is_fw_assigned_ipv6.attr) { | |
784 | param = ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6; | |
785 | } else if (attr == &dev_attr_fnode_header_digest.attr) { | |
786 | param = ISCSI_FLASHNODE_HDR_DGST_EN; | |
787 | } else if (attr == &dev_attr_fnode_data_digest.attr) { | |
788 | param = ISCSI_FLASHNODE_DATA_DGST_EN; | |
789 | } else if (attr == &dev_attr_fnode_snack_req.attr) { | |
790 | param = ISCSI_FLASHNODE_SNACK_REQ_EN; | |
791 | } else if (attr == &dev_attr_fnode_tcp_timestamp_stat.attr) { | |
792 | param = ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT; | |
793 | } else if (attr == &dev_attr_fnode_tcp_nagle_disable.attr) { | |
794 | param = ISCSI_FLASHNODE_TCP_NAGLE_DISABLE; | |
795 | } else if (attr == &dev_attr_fnode_tcp_wsf_disable.attr) { | |
796 | param = ISCSI_FLASHNODE_TCP_WSF_DISABLE; | |
797 | } else if (attr == &dev_attr_fnode_tcp_timer_scale.attr) { | |
798 | param = ISCSI_FLASHNODE_TCP_TIMER_SCALE; | |
799 | } else if (attr == &dev_attr_fnode_tcp_timestamp_enable.attr) { | |
800 | param = ISCSI_FLASHNODE_TCP_TIMESTAMP_EN; | |
801 | } else if (attr == &dev_attr_fnode_fragment_disable.attr) { | |
802 | param = ISCSI_FLASHNODE_IP_FRAG_DISABLE; | |
803 | } else if (attr == &dev_attr_fnode_max_recv_dlength.attr) { | |
804 | param = ISCSI_FLASHNODE_MAX_RECV_DLENGTH; | |
805 | } else if (attr == &dev_attr_fnode_max_xmit_dlength.attr) { | |
806 | param = ISCSI_FLASHNODE_MAX_XMIT_DLENGTH; | |
807 | } else if (attr == &dev_attr_fnode_keepalive_tmo.attr) { | |
808 | param = ISCSI_FLASHNODE_KEEPALIVE_TMO; | |
809 | } else if (attr == &dev_attr_fnode_port.attr) { | |
810 | param = ISCSI_FLASHNODE_PORT; | |
811 | } else if (attr == &dev_attr_fnode_ipaddress.attr) { | |
812 | param = ISCSI_FLASHNODE_IPADDR; | |
813 | } else if (attr == &dev_attr_fnode_redirect_ipaddr.attr) { | |
814 | param = ISCSI_FLASHNODE_REDIRECT_IPADDR; | |
815 | } else if (attr == &dev_attr_fnode_max_segment_size.attr) { | |
816 | param = ISCSI_FLASHNODE_MAX_SEGMENT_SIZE; | |
817 | } else if (attr == &dev_attr_fnode_local_port.attr) { | |
818 | param = ISCSI_FLASHNODE_LOCAL_PORT; | |
819 | } else if (attr == &dev_attr_fnode_ipv4_tos.attr) { | |
820 | param = ISCSI_FLASHNODE_IPV4_TOS; | |
821 | } else if (attr == &dev_attr_fnode_ipv6_traffic_class.attr) { | |
822 | param = ISCSI_FLASHNODE_IPV6_TC; | |
823 | } else if (attr == &dev_attr_fnode_ipv6_flow_label.attr) { | |
824 | param = ISCSI_FLASHNODE_IPV6_FLOW_LABEL; | |
825 | } else if (attr == &dev_attr_fnode_link_local_ipv6.attr) { | |
826 | param = ISCSI_FLASHNODE_LINK_LOCAL_IPV6; | |
827 | } else if (attr == &dev_attr_fnode_tcp_xmit_wsf.attr) { | |
828 | param = ISCSI_FLASHNODE_TCP_XMIT_WSF; | |
829 | } else if (attr == &dev_attr_fnode_tcp_recv_wsf.attr) { | |
830 | param = ISCSI_FLASHNODE_TCP_RECV_WSF; | |
831 | } else if (attr == &dev_attr_fnode_statsn.attr) { | |
832 | param = ISCSI_FLASHNODE_STATSN; | |
833 | } else if (attr == &dev_attr_fnode_exp_statsn.attr) { | |
834 | param = ISCSI_FLASHNODE_EXP_STATSN; | |
835 | } else { | |
836 | WARN_ONCE(1, "Invalid flashnode connection attr"); | |
837 | return 0; | |
838 | } | |
839 | ||
840 | return t->attr_is_visible(ISCSI_FLASHNODE_PARAM, param); | |
841 | } | |
842 | ||
843 | static struct attribute_group iscsi_flashnode_conn_attr_group = { | |
844 | .attrs = iscsi_flashnode_conn_attrs, | |
845 | .is_visible = iscsi_flashnode_conn_attr_is_visible, | |
846 | }; | |
847 | ||
848 | static const struct attribute_group *iscsi_flashnode_conn_attr_groups[] = { | |
849 | &iscsi_flashnode_conn_attr_group, | |
850 | NULL, | |
851 | }; | |
852 | ||
853 | static void iscsi_flashnode_conn_release(struct device *dev) | |
854 | { | |
855 | struct iscsi_bus_flash_conn *fnode_conn = iscsi_dev_to_flash_conn(dev); | |
856 | ||
857 | kfree(fnode_conn->ipaddress); | |
858 | kfree(fnode_conn->redirect_ipaddr); | |
859 | kfree(fnode_conn->link_local_ipv6_addr); | |
860 | kfree(fnode_conn); | |
861 | } | |
862 | ||
863 | struct device_type iscsi_flashnode_conn_dev_type = { | |
864 | .name = "iscsi_flashnode_conn_dev_type", | |
865 | .groups = iscsi_flashnode_conn_attr_groups, | |
866 | .release = iscsi_flashnode_conn_release, | |
867 | }; | |
868 | ||
869 | struct bus_type iscsi_flashnode_bus; | |
870 | ||
871 | int iscsi_flashnode_bus_match(struct device *dev, | |
872 | struct device_driver *drv) | |
873 | { | |
874 | if (dev->bus == &iscsi_flashnode_bus) | |
875 | return 1; | |
876 | return 0; | |
877 | } | |
878 | EXPORT_SYMBOL_GPL(iscsi_flashnode_bus_match); | |
879 | ||
880 | struct bus_type iscsi_flashnode_bus = { | |
881 | .name = "iscsi_flashnode", | |
882 | .match = &iscsi_flashnode_bus_match, | |
883 | }; | |
884 | ||
885 | /** | |
886 | * iscsi_create_flashnode_sess - Add flashnode session entry in sysfs | |
887 | * @shost: pointer to host data | |
888 | * @index: index of flashnode to add in sysfs | |
889 | * @transport: pointer to transport data | |
890 | * @dd_size: total size to allocate | |
891 | * | |
892 | * Adds a sysfs entry for the flashnode session attributes | |
893 | * | |
894 | * Returns: | |
895 | * pointer to allocated flashnode sess on sucess | |
896 | * %NULL on failure | |
897 | */ | |
898 | struct iscsi_bus_flash_session * | |
899 | iscsi_create_flashnode_sess(struct Scsi_Host *shost, int index, | |
900 | struct iscsi_transport *transport, | |
901 | int dd_size) | |
902 | { | |
903 | struct iscsi_bus_flash_session *fnode_sess; | |
904 | int err; | |
905 | ||
906 | fnode_sess = kzalloc(sizeof(*fnode_sess) + dd_size, GFP_KERNEL); | |
907 | if (!fnode_sess) | |
908 | return NULL; | |
909 | ||
910 | fnode_sess->transport = transport; | |
911 | fnode_sess->target_id = index; | |
912 | fnode_sess->dev.type = &iscsi_flashnode_sess_dev_type; | |
913 | fnode_sess->dev.bus = &iscsi_flashnode_bus; | |
914 | fnode_sess->dev.parent = &shost->shost_gendev; | |
915 | dev_set_name(&fnode_sess->dev, "flashnode_sess-%u:%u", | |
916 | shost->host_no, index); | |
917 | ||
918 | err = device_register(&fnode_sess->dev); | |
919 | if (err) | |
920 | goto free_fnode_sess; | |
921 | ||
922 | if (dd_size) | |
923 | fnode_sess->dd_data = &fnode_sess[1]; | |
924 | ||
925 | return fnode_sess; | |
926 | ||
927 | free_fnode_sess: | |
928 | kfree(fnode_sess); | |
929 | return NULL; | |
930 | } | |
931 | EXPORT_SYMBOL_GPL(iscsi_create_flashnode_sess); | |
932 | ||
933 | /** | |
934 | * iscsi_create_flashnode_conn - Add flashnode conn entry in sysfs | |
935 | * @shost: pointer to host data | |
936 | * @fnode_sess: pointer to the parent flashnode session entry | |
937 | * @transport: pointer to transport data | |
938 | * @dd_size: total size to allocate | |
939 | * | |
940 | * Adds a sysfs entry for the flashnode connection attributes | |
941 | * | |
942 | * Returns: | |
943 | * pointer to allocated flashnode conn on success | |
944 | * %NULL on failure | |
945 | */ | |
946 | struct iscsi_bus_flash_conn * | |
947 | iscsi_create_flashnode_conn(struct Scsi_Host *shost, | |
948 | struct iscsi_bus_flash_session *fnode_sess, | |
949 | struct iscsi_transport *transport, | |
950 | int dd_size) | |
951 | { | |
952 | struct iscsi_bus_flash_conn *fnode_conn; | |
953 | int err; | |
954 | ||
955 | fnode_conn = kzalloc(sizeof(*fnode_conn) + dd_size, GFP_KERNEL); | |
956 | if (!fnode_conn) | |
957 | return NULL; | |
958 | ||
959 | fnode_conn->transport = transport; | |
960 | fnode_conn->dev.type = &iscsi_flashnode_conn_dev_type; | |
961 | fnode_conn->dev.bus = &iscsi_flashnode_bus; | |
962 | fnode_conn->dev.parent = &fnode_sess->dev; | |
963 | dev_set_name(&fnode_conn->dev, "flashnode_conn-%u:%u:0", | |
964 | shost->host_no, fnode_sess->target_id); | |
965 | ||
966 | err = device_register(&fnode_conn->dev); | |
967 | if (err) | |
968 | goto free_fnode_conn; | |
969 | ||
970 | if (dd_size) | |
971 | fnode_conn->dd_data = &fnode_conn[1]; | |
972 | ||
973 | return fnode_conn; | |
974 | ||
975 | free_fnode_conn: | |
976 | kfree(fnode_conn); | |
977 | return NULL; | |
978 | } | |
979 | EXPORT_SYMBOL_GPL(iscsi_create_flashnode_conn); | |
980 | ||
981 | /** | |
982 | * iscsi_is_flashnode_conn_dev - verify passed device is to be flashnode conn | |
983 | * @dev: device to verify | |
984 | * @data: pointer to data containing value to use for verification | |
985 | * | |
986 | * Verifies if the passed device is flashnode conn device | |
987 | * | |
988 | * Returns: | |
989 | * 1 on success | |
990 | * 0 on failure | |
991 | */ | |
992 | int iscsi_is_flashnode_conn_dev(struct device *dev, void *data) | |
993 | { | |
994 | return dev->bus == &iscsi_flashnode_bus; | |
995 | } | |
996 | EXPORT_SYMBOL_GPL(iscsi_is_flashnode_conn_dev); | |
997 | ||
998 | static int iscsi_destroy_flashnode_conn(struct iscsi_bus_flash_conn *fnode_conn) | |
999 | { | |
1000 | device_unregister(&fnode_conn->dev); | |
1001 | return 0; | |
1002 | } | |
1003 | ||
1004 | static int flashnode_match_index(struct device *dev, void *data) | |
1005 | { | |
1006 | struct iscsi_bus_flash_session *fnode_sess = NULL; | |
1007 | int ret = 0; | |
1008 | ||
1009 | if (!iscsi_flashnode_bus_match(dev, NULL)) | |
1010 | goto exit_match_index; | |
1011 | ||
1012 | fnode_sess = iscsi_dev_to_flash_session(dev); | |
1013 | ret = (fnode_sess->target_id == *((int *)data)) ? 1 : 0; | |
1014 | ||
1015 | exit_match_index: | |
1016 | return ret; | |
1017 | } | |
1018 | ||
1019 | /** | |
1020 | * iscsi_get_flashnode_by_index -finds flashnode session entry by index | |
1021 | * @shost: pointer to host data | |
1022 | * @data: pointer to data containing value to use for comparison | |
1023 | * @fn: function pointer that does actual comparison | |
1024 | * | |
1025 | * Finds the flashnode session object for the passed index | |
1026 | * | |
1027 | * Returns: | |
1028 | * pointer to found flashnode session object on success | |
1029 | * %NULL on failure | |
1030 | */ | |
1031 | static struct iscsi_bus_flash_session * | |
1032 | iscsi_get_flashnode_by_index(struct Scsi_Host *shost, void *data, | |
1033 | int (*fn)(struct device *dev, void *data)) | |
1034 | { | |
1035 | struct iscsi_bus_flash_session *fnode_sess = NULL; | |
1036 | struct device *dev; | |
1037 | ||
1038 | dev = device_find_child(&shost->shost_gendev, data, fn); | |
1039 | if (dev) | |
1040 | fnode_sess = iscsi_dev_to_flash_session(dev); | |
1041 | ||
1042 | return fnode_sess; | |
1043 | } | |
1044 | ||
1045 | /** | |
1046 | * iscsi_find_flashnode_sess - finds flashnode session entry | |
1047 | * @shost: pointer to host data | |
1048 | * @data: pointer to data containing value to use for comparison | |
1049 | * @fn: function pointer that does actual comparison | |
1050 | * | |
1051 | * Finds the flashnode session object comparing the data passed using logic | |
1052 | * defined in passed function pointer | |
1053 | * | |
1054 | * Returns: | |
1055 | * pointer to found flashnode session device object on success | |
1056 | * %NULL on failure | |
1057 | */ | |
1058 | struct device * | |
1059 | iscsi_find_flashnode_sess(struct Scsi_Host *shost, void *data, | |
1060 | int (*fn)(struct device *dev, void *data)) | |
1061 | { | |
1062 | struct device *dev; | |
1063 | ||
1064 | dev = device_find_child(&shost->shost_gendev, data, fn); | |
1065 | return dev; | |
1066 | } | |
1067 | EXPORT_SYMBOL_GPL(iscsi_find_flashnode_sess); | |
1068 | ||
1069 | /** | |
1070 | * iscsi_find_flashnode_conn - finds flashnode connection entry | |
1071 | * @fnode_sess: pointer to parent flashnode session entry | |
1072 | * @data: pointer to data containing value to use for comparison | |
1073 | * @fn: function pointer that does actual comparison | |
1074 | * | |
1075 | * Finds the flashnode connection object comparing the data passed using logic | |
1076 | * defined in passed function pointer | |
1077 | * | |
1078 | * Returns: | |
1079 | * pointer to found flashnode connection device object on success | |
1080 | * %NULL on failure | |
1081 | */ | |
1082 | struct device * | |
1083 | iscsi_find_flashnode_conn(struct iscsi_bus_flash_session *fnode_sess, | |
1084 | void *data, | |
1085 | int (*fn)(struct device *dev, void *data)) | |
1086 | { | |
1087 | struct device *dev; | |
1088 | ||
1089 | dev = device_find_child(&fnode_sess->dev, data, fn); | |
1090 | return dev; | |
1091 | } | |
1092 | EXPORT_SYMBOL_GPL(iscsi_find_flashnode_conn); | |
1093 | ||
1094 | static int iscsi_iter_destroy_flashnode_conn_fn(struct device *dev, void *data) | |
1095 | { | |
1096 | if (!iscsi_is_flashnode_conn_dev(dev, NULL)) | |
1097 | return 0; | |
1098 | ||
1099 | return iscsi_destroy_flashnode_conn(iscsi_dev_to_flash_conn(dev)); | |
1100 | } | |
1101 | ||
1102 | /** | |
1103 | * iscsi_destroy_flashnode_sess - destory flashnode session entry | |
1104 | * @fnode_sess: pointer to flashnode session entry to be destroyed | |
1105 | * | |
1106 | * Deletes the flashnode session entry and all children flashnode connection | |
1107 | * entries from sysfs | |
1108 | */ | |
1109 | void iscsi_destroy_flashnode_sess(struct iscsi_bus_flash_session *fnode_sess) | |
1110 | { | |
1111 | int err; | |
1112 | ||
1113 | err = device_for_each_child(&fnode_sess->dev, NULL, | |
1114 | iscsi_iter_destroy_flashnode_conn_fn); | |
1115 | if (err) | |
1116 | pr_err("Could not delete all connections for %s. Error %d.\n", | |
1117 | fnode_sess->dev.kobj.name, err); | |
1118 | ||
1119 | device_unregister(&fnode_sess->dev); | |
1120 | } | |
1121 | EXPORT_SYMBOL_GPL(iscsi_destroy_flashnode_sess); | |
1122 | ||
1123 | static int iscsi_iter_destroy_flashnode_fn(struct device *dev, void *data) | |
1124 | { | |
1125 | if (!iscsi_flashnode_bus_match(dev, NULL)) | |
1126 | return 0; | |
1127 | ||
1128 | iscsi_destroy_flashnode_sess(iscsi_dev_to_flash_session(dev)); | |
1129 | return 0; | |
1130 | } | |
1131 | ||
1132 | /** | |
1133 | * iscsi_destroy_all_flashnode - destory all flashnode session entries | |
1134 | * @shost: pointer to host data | |
1135 | * | |
1136 | * Destroys all the flashnode session entries and all corresponding children | |
1137 | * flashnode connection entries from sysfs | |
1138 | */ | |
1139 | void iscsi_destroy_all_flashnode(struct Scsi_Host *shost) | |
1140 | { | |
1141 | device_for_each_child(&shost->shost_gendev, NULL, | |
1142 | iscsi_iter_destroy_flashnode_fn); | |
1143 | } | |
1144 | EXPORT_SYMBOL_GPL(iscsi_destroy_all_flashnode); | |
1145 | ||
90eeb01a MC |
1146 | /* |
1147 | * BSG support | |
1148 | */ | |
1149 | /** | |
1150 | * iscsi_bsg_host_dispatch - Dispatch command to LLD. | |
1151 | * @job: bsg job to be processed | |
1152 | */ | |
1153 | static int iscsi_bsg_host_dispatch(struct bsg_job *job) | |
1154 | { | |
1155 | struct Scsi_Host *shost = iscsi_job_to_shost(job); | |
1156 | struct iscsi_bsg_request *req = job->request; | |
1157 | struct iscsi_bsg_reply *reply = job->reply; | |
1158 | struct iscsi_internal *i = to_iscsi_internal(shost->transportt); | |
1159 | int cmdlen = sizeof(uint32_t); /* start with length of msgcode */ | |
1160 | int ret; | |
1161 | ||
1162 | /* check if we have the msgcode value at least */ | |
1163 | if (job->request_len < sizeof(uint32_t)) { | |
1164 | ret = -ENOMSG; | |
1165 | goto fail_host_msg; | |
1166 | } | |
1167 | ||
1168 | /* Validate the host command */ | |
1169 | switch (req->msgcode) { | |
1170 | case ISCSI_BSG_HST_VENDOR: | |
1171 | cmdlen += sizeof(struct iscsi_bsg_host_vendor); | |
1172 | if ((shost->hostt->vendor_id == 0L) || | |
1173 | (req->rqst_data.h_vendor.vendor_id != | |
1174 | shost->hostt->vendor_id)) { | |
1175 | ret = -ESRCH; | |
1176 | goto fail_host_msg; | |
1177 | } | |
1178 | break; | |
1179 | default: | |
1180 | ret = -EBADR; | |
1181 | goto fail_host_msg; | |
1182 | } | |
1183 | ||
1184 | /* check if we really have all the request data needed */ | |
1185 | if (job->request_len < cmdlen) { | |
1186 | ret = -ENOMSG; | |
1187 | goto fail_host_msg; | |
1188 | } | |
1189 | ||
1190 | ret = i->iscsi_transport->bsg_request(job); | |
1191 | if (!ret) | |
1192 | return 0; | |
1193 | ||
1194 | fail_host_msg: | |
1195 | /* return the errno failure code as the only status */ | |
1196 | BUG_ON(job->reply_len < sizeof(uint32_t)); | |
1197 | reply->reply_payload_rcv_len = 0; | |
1198 | reply->result = ret; | |
1199 | job->reply_len = sizeof(uint32_t); | |
1200 | bsg_job_done(job, ret, 0); | |
1201 | return 0; | |
1202 | } | |
1203 | ||
1204 | /** | |
1205 | * iscsi_bsg_host_add - Create and add the bsg hooks to receive requests | |
1206 | * @shost: shost for iscsi_host | |
eae627e4 | 1207 | * @ihost: iscsi_cls_host adding the structures to |
90eeb01a MC |
1208 | */ |
1209 | static int | |
1210 | iscsi_bsg_host_add(struct Scsi_Host *shost, struct iscsi_cls_host *ihost) | |
1211 | { | |
1212 | struct device *dev = &shost->shost_gendev; | |
1213 | struct iscsi_internal *i = to_iscsi_internal(shost->transportt); | |
1214 | struct request_queue *q; | |
1215 | char bsg_name[20]; | |
1216 | int ret; | |
1217 | ||
1218 | if (!i->iscsi_transport->bsg_request) | |
1219 | return -ENOTSUPP; | |
1220 | ||
1221 | snprintf(bsg_name, sizeof(bsg_name), "iscsi_host%d", shost->host_no); | |
1222 | ||
1223 | q = __scsi_alloc_queue(shost, bsg_request_fn); | |
1224 | if (!q) | |
1225 | return -ENOMEM; | |
1226 | ||
1227 | ret = bsg_setup_queue(dev, q, bsg_name, iscsi_bsg_host_dispatch, 0); | |
1228 | if (ret) { | |
1229 | shost_printk(KERN_ERR, shost, "bsg interface failed to " | |
1230 | "initialize - no request queue\n"); | |
1231 | blk_cleanup_queue(q); | |
1232 | return ret; | |
1233 | } | |
1234 | ||
1235 | ihost->bsg_q = q; | |
1236 | return 0; | |
1237 | } | |
1238 | ||
30a6c652 | 1239 | static int iscsi_setup_host(struct transport_container *tc, struct device *dev, |
ee959b00 | 1240 | struct device *cdev) |
30a6c652 MC |
1241 | { |
1242 | struct Scsi_Host *shost = dev_to_shost(dev); | |
32c6e1b9 | 1243 | struct iscsi_cls_host *ihost = shost->shost_data; |
30a6c652 MC |
1244 | |
1245 | memset(ihost, 0, sizeof(*ihost)); | |
8aae18ad | 1246 | atomic_set(&ihost->nr_scans, 0); |
7970634b | 1247 | mutex_init(&ihost->mutex); |
90eeb01a MC |
1248 | |
1249 | iscsi_bsg_host_add(shost, ihost); | |
1250 | /* ignore any bsg add error - we just can't do sgio */ | |
1251 | ||
1252 | return 0; | |
1253 | } | |
1254 | ||
1255 | static int iscsi_remove_host(struct transport_container *tc, | |
1256 | struct device *dev, struct device *cdev) | |
1257 | { | |
1258 | struct Scsi_Host *shost = dev_to_shost(dev); | |
1259 | struct iscsi_cls_host *ihost = shost->shost_data; | |
1260 | ||
1261 | if (ihost->bsg_q) { | |
86072d81 | 1262 | bsg_unregister_queue(ihost->bsg_q); |
90eeb01a MC |
1263 | blk_cleanup_queue(ihost->bsg_q); |
1264 | } | |
30a6c652 MC |
1265 | return 0; |
1266 | } | |
1267 | ||
1268 | static DECLARE_TRANSPORT_CLASS(iscsi_host_class, | |
1269 | "iscsi_host", | |
1270 | iscsi_setup_host, | |
90eeb01a | 1271 | iscsi_remove_host, |
30a6c652 MC |
1272 | NULL); |
1273 | ||
0896b752 AA |
1274 | static DECLARE_TRANSPORT_CLASS(iscsi_session_class, |
1275 | "iscsi_session", | |
1da177e4 LT |
1276 | NULL, |
1277 | NULL, | |
1278 | NULL); | |
1279 | ||
0896b752 AA |
1280 | static DECLARE_TRANSPORT_CLASS(iscsi_connection_class, |
1281 | "iscsi_connection", | |
1da177e4 LT |
1282 | NULL, |
1283 | NULL, | |
1284 | NULL); | |
0896b752 AA |
1285 | |
1286 | static struct sock *nls; | |
0b950672 | 1287 | static DEFINE_MUTEX(rx_queue_mutex); |
0896b752 | 1288 | |
7b7232f3 MC |
1289 | static LIST_HEAD(sesslist); |
1290 | static DEFINE_SPINLOCK(sesslock); | |
7b8631b5 MC |
1291 | static LIST_HEAD(connlist); |
1292 | static DEFINE_SPINLOCK(connlock); | |
0896b752 | 1293 | |
b5c7a12d MC |
1294 | static uint32_t iscsi_conn_get_sid(struct iscsi_cls_conn *conn) |
1295 | { | |
1296 | struct iscsi_cls_session *sess = iscsi_dev_to_session(conn->dev.parent); | |
1297 | return sess->sid; | |
1298 | } | |
1299 | ||
1300 | /* | |
1301 | * Returns the matching session to a given sid | |
1302 | */ | |
1303 | static struct iscsi_cls_session *iscsi_session_lookup(uint32_t sid) | |
7b7232f3 MC |
1304 | { |
1305 | unsigned long flags; | |
1306 | struct iscsi_cls_session *sess; | |
1307 | ||
1308 | spin_lock_irqsave(&sesslock, flags); | |
1309 | list_for_each_entry(sess, &sesslist, sess_list) { | |
b5c7a12d | 1310 | if (sess->sid == sid) { |
7b7232f3 MC |
1311 | spin_unlock_irqrestore(&sesslock, flags); |
1312 | return sess; | |
1313 | } | |
1314 | } | |
1315 | spin_unlock_irqrestore(&sesslock, flags); | |
1316 | return NULL; | |
1317 | } | |
1318 | ||
b5c7a12d MC |
1319 | /* |
1320 | * Returns the matching connection to a given sid / cid tuple | |
1321 | */ | |
1322 | static struct iscsi_cls_conn *iscsi_conn_lookup(uint32_t sid, uint32_t cid) | |
7b7232f3 MC |
1323 | { |
1324 | unsigned long flags; | |
1325 | struct iscsi_cls_conn *conn; | |
1326 | ||
1327 | spin_lock_irqsave(&connlock, flags); | |
1328 | list_for_each_entry(conn, &connlist, conn_list) { | |
b5c7a12d | 1329 | if ((conn->cid == cid) && (iscsi_conn_get_sid(conn) == sid)) { |
7b7232f3 MC |
1330 | spin_unlock_irqrestore(&connlock, flags); |
1331 | return conn; | |
1332 | } | |
1333 | } | |
1334 | spin_unlock_irqrestore(&connlock, flags); | |
1335 | return NULL; | |
1336 | } | |
1337 | ||
7b8631b5 MC |
1338 | /* |
1339 | * The following functions can be used by LLDs that allocate | |
1340 | * their own scsi_hosts or by software iscsi LLDs | |
1341 | */ | |
6eabafbe MC |
1342 | static struct { |
1343 | int value; | |
1344 | char *name; | |
1345 | } iscsi_session_state_names[] = { | |
1346 | { ISCSI_SESSION_LOGGED_IN, "LOGGED_IN" }, | |
1347 | { ISCSI_SESSION_FAILED, "FAILED" }, | |
1348 | { ISCSI_SESSION_FREE, "FREE" }, | |
1349 | }; | |
1350 | ||
3b0f208a | 1351 | static const char *iscsi_session_state_name(int state) |
6eabafbe MC |
1352 | { |
1353 | int i; | |
1354 | char *name = NULL; | |
1355 | ||
1356 | for (i = 0; i < ARRAY_SIZE(iscsi_session_state_names); i++) { | |
1357 | if (iscsi_session_state_names[i].value == state) { | |
1358 | name = iscsi_session_state_names[i].name; | |
1359 | break; | |
1360 | } | |
1361 | } | |
1362 | return name; | |
1363 | } | |
1364 | ||
1365 | int iscsi_session_chkready(struct iscsi_cls_session *session) | |
1366 | { | |
1367 | unsigned long flags; | |
1368 | int err; | |
1369 | ||
1370 | spin_lock_irqsave(&session->lock, flags); | |
1371 | switch (session->state) { | |
1372 | case ISCSI_SESSION_LOGGED_IN: | |
1373 | err = 0; | |
1374 | break; | |
1375 | case ISCSI_SESSION_FAILED: | |
9a1a69a1 | 1376 | err = DID_IMM_RETRY << 16; |
6eabafbe MC |
1377 | break; |
1378 | case ISCSI_SESSION_FREE: | |
56d7fcfa | 1379 | err = DID_TRANSPORT_FAILFAST << 16; |
6eabafbe MC |
1380 | break; |
1381 | default: | |
1382 | err = DID_NO_CONNECT << 16; | |
1383 | break; | |
1384 | } | |
1385 | spin_unlock_irqrestore(&session->lock, flags); | |
1386 | return err; | |
1387 | } | |
1388 | EXPORT_SYMBOL_GPL(iscsi_session_chkready); | |
1389 | ||
17fa575e MR |
1390 | int iscsi_is_session_online(struct iscsi_cls_session *session) |
1391 | { | |
1392 | unsigned long flags; | |
1393 | int ret = 0; | |
1394 | ||
1395 | spin_lock_irqsave(&session->lock, flags); | |
1396 | if (session->state == ISCSI_SESSION_LOGGED_IN) | |
1397 | ret = 1; | |
1398 | spin_unlock_irqrestore(&session->lock, flags); | |
1399 | return ret; | |
1400 | } | |
1401 | EXPORT_SYMBOL_GPL(iscsi_is_session_online); | |
1402 | ||
7b8631b5 MC |
1403 | static void iscsi_session_release(struct device *dev) |
1404 | { | |
1405 | struct iscsi_cls_session *session = iscsi_dev_to_session(dev); | |
7b8631b5 | 1406 | struct Scsi_Host *shost; |
0896b752 | 1407 | |
7b8631b5 MC |
1408 | shost = iscsi_session_to_shost(session); |
1409 | scsi_host_put(shost); | |
632248aa | 1410 | ISCSI_DBG_TRANS_SESSION(session, "Completing session release\n"); |
7b8631b5 | 1411 | kfree(session); |
7b8631b5 | 1412 | } |
0896b752 | 1413 | |
6260a5d2 | 1414 | int iscsi_is_session_dev(const struct device *dev) |
7b8631b5 MC |
1415 | { |
1416 | return dev->release == iscsi_session_release; | |
1417 | } | |
6260a5d2 | 1418 | EXPORT_SYMBOL_GPL(iscsi_is_session_dev); |
0896b752 | 1419 | |
a4804cd6 MC |
1420 | static int iscsi_iter_session_fn(struct device *dev, void *data) |
1421 | { | |
1422 | void (* fn) (struct iscsi_cls_session *) = data; | |
1423 | ||
1424 | if (!iscsi_is_session_dev(dev)) | |
1425 | return 0; | |
1426 | fn(iscsi_dev_to_session(dev)); | |
1427 | return 0; | |
1428 | } | |
1429 | ||
1430 | void iscsi_host_for_each_session(struct Scsi_Host *shost, | |
1431 | void (*fn)(struct iscsi_cls_session *)) | |
1432 | { | |
1433 | device_for_each_child(&shost->shost_gendev, fn, | |
1434 | iscsi_iter_session_fn); | |
1435 | } | |
1436 | EXPORT_SYMBOL_GPL(iscsi_host_for_each_session); | |
1437 | ||
8aae18ad MC |
1438 | /** |
1439 | * iscsi_scan_finished - helper to report when running scans are done | |
1440 | * @shost: scsi host | |
1441 | * @time: scan run time | |
1442 | * | |
1443 | * This function can be used by drives like qla4xxx to report to the scsi | |
1444 | * layer when the scans it kicked off at module load time are done. | |
1445 | */ | |
1446 | int iscsi_scan_finished(struct Scsi_Host *shost, unsigned long time) | |
1447 | { | |
32c6e1b9 | 1448 | struct iscsi_cls_host *ihost = shost->shost_data; |
8aae18ad MC |
1449 | /* |
1450 | * qla4xxx will have kicked off some session unblocks before calling | |
1451 | * scsi_scan_host, so just wait for them to complete. | |
1452 | */ | |
1453 | return !atomic_read(&ihost->nr_scans); | |
1454 | } | |
1455 | EXPORT_SYMBOL_GPL(iscsi_scan_finished); | |
1456 | ||
7970634b MC |
1457 | struct iscsi_scan_data { |
1458 | unsigned int channel; | |
1459 | unsigned int id; | |
1460 | unsigned int lun; | |
1461 | }; | |
1462 | ||
1463 | static int iscsi_user_scan_session(struct device *dev, void *data) | |
30a6c652 | 1464 | { |
7970634b | 1465 | struct iscsi_scan_data *scan_data = data; |
30a6c652 | 1466 | struct iscsi_cls_session *session; |
7970634b MC |
1467 | struct Scsi_Host *shost; |
1468 | struct iscsi_cls_host *ihost; | |
1469 | unsigned long flags; | |
1470 | unsigned int id; | |
1471 | ||
1472 | if (!iscsi_is_session_dev(dev)) | |
1473 | return 0; | |
1474 | ||
1475 | session = iscsi_dev_to_session(dev); | |
632248aa MC |
1476 | |
1477 | ISCSI_DBG_TRANS_SESSION(session, "Scanning session\n"); | |
1478 | ||
7970634b MC |
1479 | shost = iscsi_session_to_shost(session); |
1480 | ihost = shost->shost_data; | |
30a6c652 MC |
1481 | |
1482 | mutex_lock(&ihost->mutex); | |
7970634b MC |
1483 | spin_lock_irqsave(&session->lock, flags); |
1484 | if (session->state != ISCSI_SESSION_LOGGED_IN) { | |
1485 | spin_unlock_irqrestore(&session->lock, flags); | |
632248aa | 1486 | goto user_scan_exit; |
30a6c652 | 1487 | } |
7970634b MC |
1488 | id = session->target_id; |
1489 | spin_unlock_irqrestore(&session->lock, flags); | |
30a6c652 | 1490 | |
7970634b MC |
1491 | if (id != ISCSI_MAX_TARGET) { |
1492 | if ((scan_data->channel == SCAN_WILD_CARD || | |
1493 | scan_data->channel == 0) && | |
1494 | (scan_data->id == SCAN_WILD_CARD || | |
1495 | scan_data->id == id)) | |
1496 | scsi_scan_target(&session->dev, 0, id, | |
1497 | scan_data->lun, 1); | |
1498 | } | |
632248aa MC |
1499 | |
1500 | user_scan_exit: | |
7970634b | 1501 | mutex_unlock(&ihost->mutex); |
632248aa | 1502 | ISCSI_DBG_TRANS_SESSION(session, "Completed session scan\n"); |
30a6c652 MC |
1503 | return 0; |
1504 | } | |
1505 | ||
7970634b MC |
1506 | static int iscsi_user_scan(struct Scsi_Host *shost, uint channel, |
1507 | uint id, uint lun) | |
1508 | { | |
1509 | struct iscsi_scan_data scan_data; | |
1510 | ||
1511 | scan_data.channel = channel; | |
1512 | scan_data.id = id; | |
1513 | scan_data.lun = lun; | |
1514 | ||
1515 | return device_for_each_child(&shost->shost_gendev, &scan_data, | |
1516 | iscsi_user_scan_session); | |
1517 | } | |
1518 | ||
bd976f62 MC |
1519 | static void iscsi_scan_session(struct work_struct *work) |
1520 | { | |
1521 | struct iscsi_cls_session *session = | |
1522 | container_of(work, struct iscsi_cls_session, scan_work); | |
8aae18ad | 1523 | struct Scsi_Host *shost = iscsi_session_to_shost(session); |
32c6e1b9 | 1524 | struct iscsi_cls_host *ihost = shost->shost_data; |
7970634b | 1525 | struct iscsi_scan_data scan_data; |
bd976f62 | 1526 | |
7970634b MC |
1527 | scan_data.channel = 0; |
1528 | scan_data.id = SCAN_WILD_CARD; | |
1529 | scan_data.lun = SCAN_WILD_CARD; | |
bd976f62 | 1530 | |
7970634b | 1531 | iscsi_user_scan_session(&session->dev, &scan_data); |
8aae18ad | 1532 | atomic_dec(&ihost->nr_scans); |
bd976f62 MC |
1533 | } |
1534 | ||
c01be6dc MC |
1535 | /** |
1536 | * iscsi_block_scsi_eh - block scsi eh until session state has transistioned | |
e6d4ef45 | 1537 | * @cmd: scsi cmd passed to scsi eh handler |
c01be6dc MC |
1538 | * |
1539 | * If the session is down this function will wait for the recovery | |
1540 | * timer to fire or for the session to be logged back in. If the | |
1541 | * recovery timer fires then FAST_IO_FAIL is returned. The caller | |
1542 | * should pass this error value to the scsi eh. | |
1543 | */ | |
1544 | int iscsi_block_scsi_eh(struct scsi_cmnd *cmd) | |
1545 | { | |
1546 | struct iscsi_cls_session *session = | |
1547 | starget_to_session(scsi_target(cmd->device)); | |
1548 | unsigned long flags; | |
1549 | int ret = 0; | |
1550 | ||
1551 | spin_lock_irqsave(&session->lock, flags); | |
1552 | while (session->state != ISCSI_SESSION_LOGGED_IN) { | |
1553 | if (session->state == ISCSI_SESSION_FREE) { | |
1554 | ret = FAST_IO_FAIL; | |
1555 | break; | |
1556 | } | |
1557 | spin_unlock_irqrestore(&session->lock, flags); | |
1558 | msleep(1000); | |
1559 | spin_lock_irqsave(&session->lock, flags); | |
1560 | } | |
1561 | spin_unlock_irqrestore(&session->lock, flags); | |
1562 | return ret; | |
1563 | } | |
1564 | EXPORT_SYMBOL_GPL(iscsi_block_scsi_eh); | |
1565 | ||
c4028958 | 1566 | static void session_recovery_timedout(struct work_struct *work) |
30a6c652 | 1567 | { |
c4028958 DH |
1568 | struct iscsi_cls_session *session = |
1569 | container_of(work, struct iscsi_cls_session, | |
1570 | recovery_work.work); | |
6eabafbe | 1571 | unsigned long flags; |
30a6c652 | 1572 | |
322d739d MC |
1573 | iscsi_cls_session_printk(KERN_INFO, session, |
1574 | "session recovery timed out after %d secs\n", | |
1575 | session->recovery_tmo); | |
30a6c652 | 1576 | |
6eabafbe MC |
1577 | spin_lock_irqsave(&session->lock, flags); |
1578 | switch (session->state) { | |
1579 | case ISCSI_SESSION_FAILED: | |
1580 | session->state = ISCSI_SESSION_FREE; | |
1581 | break; | |
1582 | case ISCSI_SESSION_LOGGED_IN: | |
1583 | case ISCSI_SESSION_FREE: | |
1584 | /* we raced with the unblock's flush */ | |
1585 | spin_unlock_irqrestore(&session->lock, flags); | |
1586 | return; | |
1587 | } | |
1588 | spin_unlock_irqrestore(&session->lock, flags); | |
1589 | ||
30a6c652 MC |
1590 | if (session->transport->session_recovery_timedout) |
1591 | session->transport->session_recovery_timedout(session); | |
1592 | ||
632248aa | 1593 | ISCSI_DBG_TRANS_SESSION(session, "Unblocking SCSI target\n"); |
5d9fb5cc | 1594 | scsi_target_unblock(&session->dev, SDEV_TRANSPORT_OFFLINE); |
632248aa | 1595 | ISCSI_DBG_TRANS_SESSION(session, "Completed unblocking SCSI target\n"); |
30a6c652 MC |
1596 | } |
1597 | ||
45ab33b6 | 1598 | static void __iscsi_unblock_session(struct work_struct *work) |
6eabafbe | 1599 | { |
45ab33b6 MC |
1600 | struct iscsi_cls_session *session = |
1601 | container_of(work, struct iscsi_cls_session, | |
1602 | unblock_work); | |
bd976f62 | 1603 | struct Scsi_Host *shost = iscsi_session_to_shost(session); |
32c6e1b9 | 1604 | struct iscsi_cls_host *ihost = shost->shost_data; |
6eabafbe MC |
1605 | unsigned long flags; |
1606 | ||
632248aa | 1607 | ISCSI_DBG_TRANS_SESSION(session, "Unblocking session\n"); |
45ab33b6 MC |
1608 | /* |
1609 | * The recovery and unblock work get run from the same workqueue, | |
1610 | * so try to cancel it if it was going to run after this unblock. | |
1611 | */ | |
1612 | cancel_delayed_work(&session->recovery_work); | |
6eabafbe MC |
1613 | spin_lock_irqsave(&session->lock, flags); |
1614 | session->state = ISCSI_SESSION_LOGGED_IN; | |
1615 | spin_unlock_irqrestore(&session->lock, flags); | |
45ab33b6 | 1616 | /* start IO */ |
5d9fb5cc | 1617 | scsi_target_unblock(&session->dev, SDEV_RUNNING); |
8aae18ad MC |
1618 | /* |
1619 | * Only do kernel scanning if the driver is properly hooked into | |
1620 | * the async scanning code (drivers like iscsi_tcp do login and | |
1621 | * scanning from userspace). | |
1622 | */ | |
1623 | if (shost->hostt->scan_finished) { | |
06d25af4 | 1624 | if (scsi_queue_work(shost, &session->scan_work)) |
8aae18ad MC |
1625 | atomic_inc(&ihost->nr_scans); |
1626 | } | |
632248aa | 1627 | ISCSI_DBG_TRANS_SESSION(session, "Completed unblocking session\n"); |
6eabafbe | 1628 | } |
45ab33b6 MC |
1629 | |
1630 | /** | |
1631 | * iscsi_unblock_session - set a session as logged in and start IO. | |
1632 | * @session: iscsi session | |
1633 | * | |
1634 | * Mark a session as ready to accept IO. | |
1635 | */ | |
1636 | void iscsi_unblock_session(struct iscsi_cls_session *session) | |
1637 | { | |
1638 | queue_work(iscsi_eh_timer_workq, &session->unblock_work); | |
1639 | /* | |
1640 | * make sure all the events have completed before tell the driver | |
1641 | * it is safe | |
1642 | */ | |
1643 | flush_workqueue(iscsi_eh_timer_workq); | |
1644 | } | |
30a6c652 MC |
1645 | EXPORT_SYMBOL_GPL(iscsi_unblock_session); |
1646 | ||
45ab33b6 | 1647 | static void __iscsi_block_session(struct work_struct *work) |
30a6c652 | 1648 | { |
45ab33b6 MC |
1649 | struct iscsi_cls_session *session = |
1650 | container_of(work, struct iscsi_cls_session, | |
1651 | block_work); | |
6eabafbe MC |
1652 | unsigned long flags; |
1653 | ||
632248aa | 1654 | ISCSI_DBG_TRANS_SESSION(session, "Blocking session\n"); |
6eabafbe MC |
1655 | spin_lock_irqsave(&session->lock, flags); |
1656 | session->state = ISCSI_SESSION_FAILED; | |
1657 | spin_unlock_irqrestore(&session->lock, flags); | |
30a6c652 | 1658 | scsi_target_block(&session->dev); |
632248aa | 1659 | ISCSI_DBG_TRANS_SESSION(session, "Completed SCSI target blocking\n"); |
fdd46dcb MC |
1660 | if (session->recovery_tmo >= 0) |
1661 | queue_delayed_work(iscsi_eh_timer_workq, | |
1662 | &session->recovery_work, | |
1663 | session->recovery_tmo * HZ); | |
30a6c652 | 1664 | } |
45ab33b6 MC |
1665 | |
1666 | void iscsi_block_session(struct iscsi_cls_session *session) | |
1667 | { | |
1668 | queue_work(iscsi_eh_timer_workq, &session->block_work); | |
1669 | } | |
30a6c652 MC |
1670 | EXPORT_SYMBOL_GPL(iscsi_block_session); |
1671 | ||
26974789 MC |
1672 | static void __iscsi_unbind_session(struct work_struct *work) |
1673 | { | |
1674 | struct iscsi_cls_session *session = | |
1675 | container_of(work, struct iscsi_cls_session, | |
1676 | unbind_work); | |
1677 | struct Scsi_Host *shost = iscsi_session_to_shost(session); | |
32c6e1b9 | 1678 | struct iscsi_cls_host *ihost = shost->shost_data; |
7970634b | 1679 | unsigned long flags; |
8d4a690c | 1680 | unsigned int target_id; |
26974789 | 1681 | |
632248aa MC |
1682 | ISCSI_DBG_TRANS_SESSION(session, "Unbinding session\n"); |
1683 | ||
26974789 MC |
1684 | /* Prevent new scans and make sure scanning is not in progress */ |
1685 | mutex_lock(&ihost->mutex); | |
7970634b MC |
1686 | spin_lock_irqsave(&session->lock, flags); |
1687 | if (session->target_id == ISCSI_MAX_TARGET) { | |
1688 | spin_unlock_irqrestore(&session->lock, flags); | |
26974789 MC |
1689 | mutex_unlock(&ihost->mutex); |
1690 | return; | |
1691 | } | |
8d4a690c MC |
1692 | |
1693 | target_id = session->target_id; | |
7970634b MC |
1694 | session->target_id = ISCSI_MAX_TARGET; |
1695 | spin_unlock_irqrestore(&session->lock, flags); | |
26974789 MC |
1696 | mutex_unlock(&ihost->mutex); |
1697 | ||
8d4a690c MC |
1698 | if (session->ida_used) |
1699 | ida_simple_remove(&iscsi_sess_ida, target_id); | |
1700 | ||
26974789 MC |
1701 | scsi_remove_target(&session->dev); |
1702 | iscsi_session_event(session, ISCSI_KEVENT_UNBIND_SESSION); | |
632248aa | 1703 | ISCSI_DBG_TRANS_SESSION(session, "Completed target removal\n"); |
26974789 MC |
1704 | } |
1705 | ||
7b8631b5 | 1706 | struct iscsi_cls_session * |
5d91e209 MC |
1707 | iscsi_alloc_session(struct Scsi_Host *shost, struct iscsi_transport *transport, |
1708 | int dd_size) | |
7b8631b5 MC |
1709 | { |
1710 | struct iscsi_cls_session *session; | |
7b8631b5 | 1711 | |
5d91e209 | 1712 | session = kzalloc(sizeof(*session) + dd_size, |
b5c7a12d | 1713 | GFP_KERNEL); |
7b8631b5 | 1714 | if (!session) |
f53a88da MC |
1715 | return NULL; |
1716 | ||
7b8631b5 | 1717 | session->transport = transport; |
0c70d84b | 1718 | session->creator = -1; |
30a6c652 | 1719 | session->recovery_tmo = 120; |
6eabafbe | 1720 | session->state = ISCSI_SESSION_FREE; |
c4028958 | 1721 | INIT_DELAYED_WORK(&session->recovery_work, session_recovery_timedout); |
30a6c652 | 1722 | INIT_LIST_HEAD(&session->sess_list); |
45ab33b6 MC |
1723 | INIT_WORK(&session->unblock_work, __iscsi_unblock_session); |
1724 | INIT_WORK(&session->block_work, __iscsi_block_session); | |
26974789 | 1725 | INIT_WORK(&session->unbind_work, __iscsi_unbind_session); |
bd976f62 | 1726 | INIT_WORK(&session->scan_work, iscsi_scan_session); |
6eabafbe | 1727 | spin_lock_init(&session->lock); |
7b8631b5 | 1728 | |
6a8a0d36 MC |
1729 | /* this is released in the dev's release function */ |
1730 | scsi_host_get(shost); | |
8434aa8b MC |
1731 | session->dev.parent = &shost->shost_gendev; |
1732 | session->dev.release = iscsi_session_release; | |
1733 | device_initialize(&session->dev); | |
5d91e209 | 1734 | if (dd_size) |
b5c7a12d | 1735 | session->dd_data = &session[1]; |
632248aa MC |
1736 | |
1737 | ISCSI_DBG_TRANS_SESSION(session, "Completed session allocation\n"); | |
8434aa8b MC |
1738 | return session; |
1739 | } | |
1740 | EXPORT_SYMBOL_GPL(iscsi_alloc_session); | |
1741 | ||
6a8a0d36 | 1742 | int iscsi_add_session(struct iscsi_cls_session *session, unsigned int target_id) |
8434aa8b MC |
1743 | { |
1744 | struct Scsi_Host *shost = iscsi_session_to_shost(session); | |
32c6e1b9 | 1745 | struct iscsi_cls_host *ihost; |
26974789 | 1746 | unsigned long flags; |
8d4a690c | 1747 | int id = 0; |
8434aa8b | 1748 | int err; |
b5c7a12d | 1749 | |
30a6c652 | 1750 | ihost = shost->shost_data; |
41be1444 | 1751 | session->sid = atomic_add_return(1, &iscsi_session_nr); |
7970634b | 1752 | |
8d4a690c MC |
1753 | if (target_id == ISCSI_MAX_TARGET) { |
1754 | id = ida_simple_get(&iscsi_sess_ida, 0, 0, GFP_KERNEL); | |
7970634b | 1755 | |
8d4a690c | 1756 | if (id < 0) { |
7970634b | 1757 | iscsi_cls_session_printk(KERN_ERR, session, |
8d4a690c MC |
1758 | "Failure in Target ID Allocation\n"); |
1759 | return id; | |
7970634b | 1760 | } |
8d4a690c MC |
1761 | session->target_id = (unsigned int)id; |
1762 | session->ida_used = true; | |
1763 | } else | |
1764 | session->target_id = target_id; | |
30a6c652 | 1765 | |
71610f55 | 1766 | dev_set_name(&session->dev, "session%u", session->sid); |
8434aa8b | 1767 | err = device_add(&session->dev); |
7b8631b5 | 1768 | if (err) { |
322d739d MC |
1769 | iscsi_cls_session_printk(KERN_ERR, session, |
1770 | "could not register session's dev\n"); | |
8d4a690c | 1771 | goto release_ida; |
7b8631b5 MC |
1772 | } |
1773 | transport_register_device(&session->dev); | |
1774 | ||
26974789 MC |
1775 | spin_lock_irqsave(&sesslock, flags); |
1776 | list_add(&session->sess_list, &sesslist); | |
1777 | spin_unlock_irqrestore(&sesslock, flags); | |
1778 | ||
26974789 | 1779 | iscsi_session_event(session, ISCSI_KEVENT_CREATE_SESSION); |
632248aa | 1780 | ISCSI_DBG_TRANS_SESSION(session, "Completed session adding\n"); |
8434aa8b | 1781 | return 0; |
30a6c652 | 1782 | |
8d4a690c MC |
1783 | release_ida: |
1784 | if (session->ida_used) | |
1785 | ida_simple_remove(&iscsi_sess_ida, session->target_id); | |
1786 | ||
8434aa8b | 1787 | return err; |
7b8631b5 | 1788 | } |
8434aa8b | 1789 | EXPORT_SYMBOL_GPL(iscsi_add_session); |
7b8631b5 MC |
1790 | |
1791 | /** | |
8434aa8b MC |
1792 | * iscsi_create_session - create iscsi class session |
1793 | * @shost: scsi host | |
1794 | * @transport: iscsi transport | |
5d91e209 | 1795 | * @dd_size: private driver data size |
eb44820c | 1796 | * @target_id: which target |
7b8631b5 | 1797 | * |
8434aa8b | 1798 | * This can be called from a LLD or iscsi_transport. |
eb44820c | 1799 | */ |
8434aa8b | 1800 | struct iscsi_cls_session * |
5d91e209 MC |
1801 | iscsi_create_session(struct Scsi_Host *shost, struct iscsi_transport *transport, |
1802 | int dd_size, unsigned int target_id) | |
8434aa8b MC |
1803 | { |
1804 | struct iscsi_cls_session *session; | |
1805 | ||
5d91e209 | 1806 | session = iscsi_alloc_session(shost, transport, dd_size); |
8434aa8b MC |
1807 | if (!session) |
1808 | return NULL; | |
1809 | ||
6a8a0d36 | 1810 | if (iscsi_add_session(session, target_id)) { |
8434aa8b MC |
1811 | iscsi_free_session(session); |
1812 | return NULL; | |
1813 | } | |
1814 | return session; | |
1815 | } | |
1816 | EXPORT_SYMBOL_GPL(iscsi_create_session); | |
1817 | ||
26974789 MC |
1818 | static void iscsi_conn_release(struct device *dev) |
1819 | { | |
1820 | struct iscsi_cls_conn *conn = iscsi_dev_to_conn(dev); | |
1821 | struct device *parent = conn->dev.parent; | |
1822 | ||
632248aa | 1823 | ISCSI_DBG_TRANS_CONN(conn, "Releasing conn\n"); |
26974789 MC |
1824 | kfree(conn); |
1825 | put_device(parent); | |
1826 | } | |
1827 | ||
1828 | static int iscsi_is_conn_dev(const struct device *dev) | |
1829 | { | |
1830 | return dev->release == iscsi_conn_release; | |
1831 | } | |
1832 | ||
1833 | static int iscsi_iter_destroy_conn_fn(struct device *dev, void *data) | |
1834 | { | |
1835 | if (!iscsi_is_conn_dev(dev)) | |
1836 | return 0; | |
1837 | return iscsi_destroy_conn(iscsi_dev_to_conn(dev)); | |
1838 | } | |
1839 | ||
8434aa8b | 1840 | void iscsi_remove_session(struct iscsi_cls_session *session) |
7b8631b5 | 1841 | { |
30a6c652 | 1842 | struct Scsi_Host *shost = iscsi_session_to_shost(session); |
26974789 MC |
1843 | unsigned long flags; |
1844 | int err; | |
1845 | ||
632248aa MC |
1846 | ISCSI_DBG_TRANS_SESSION(session, "Removing session\n"); |
1847 | ||
26974789 MC |
1848 | spin_lock_irqsave(&sesslock, flags); |
1849 | list_del(&session->sess_list); | |
1850 | spin_unlock_irqrestore(&sesslock, flags); | |
30a6c652 | 1851 | |
45ab33b6 MC |
1852 | /* make sure there are no blocks/unblocks queued */ |
1853 | flush_workqueue(iscsi_eh_timer_workq); | |
1854 | /* make sure the timedout callout is not running */ | |
1855 | if (!cancel_delayed_work(&session->recovery_work)) | |
1856 | flush_workqueue(iscsi_eh_timer_workq); | |
26974789 MC |
1857 | /* |
1858 | * If we are blocked let commands flow again. The lld or iscsi | |
1859 | * layer should set up the queuecommand to fail commands. | |
45ab33b6 MC |
1860 | * We assume that LLD will not be calling block/unblock while |
1861 | * removing the session. | |
26974789 | 1862 | */ |
6eabafbe MC |
1863 | spin_lock_irqsave(&session->lock, flags); |
1864 | session->state = ISCSI_SESSION_FREE; | |
1865 | spin_unlock_irqrestore(&session->lock, flags); | |
bd976f62 | 1866 | |
5d9fb5cc | 1867 | scsi_target_unblock(&session->dev, SDEV_TRANSPORT_OFFLINE); |
45ab33b6 | 1868 | /* flush running scans then delete devices */ |
06d25af4 | 1869 | scsi_flush_work(shost); |
45ab33b6 | 1870 | __iscsi_unbind_session(&session->unbind_work); |
30a6c652 | 1871 | |
26974789 MC |
1872 | /* hw iscsi may not have removed all connections from session */ |
1873 | err = device_for_each_child(&session->dev, NULL, | |
1874 | iscsi_iter_destroy_conn_fn); | |
1875 | if (err) | |
322d739d MC |
1876 | iscsi_cls_session_printk(KERN_ERR, session, |
1877 | "Could not delete all connections " | |
1878 | "for session. Error %d.\n", err); | |
8434aa8b | 1879 | |
7b8631b5 | 1880 | transport_unregister_device(&session->dev); |
632248aa MC |
1881 | |
1882 | ISCSI_DBG_TRANS_SESSION(session, "Completing session removal\n"); | |
8434aa8b MC |
1883 | device_del(&session->dev); |
1884 | } | |
1885 | EXPORT_SYMBOL_GPL(iscsi_remove_session); | |
1886 | ||
1887 | void iscsi_free_session(struct iscsi_cls_session *session) | |
1888 | { | |
632248aa | 1889 | ISCSI_DBG_TRANS_SESSION(session, "Freeing session\n"); |
26974789 | 1890 | iscsi_session_event(session, ISCSI_KEVENT_DESTROY_SESSION); |
8434aa8b | 1891 | put_device(&session->dev); |
7b8631b5 | 1892 | } |
8434aa8b MC |
1893 | EXPORT_SYMBOL_GPL(iscsi_free_session); |
1894 | ||
1895 | /** | |
1896 | * iscsi_destroy_session - destroy iscsi session | |
1897 | * @session: iscsi_session | |
1898 | * | |
1899 | * Can be called by a LLD or iscsi_transport. There must not be | |
1900 | * any running connections. | |
eb44820c | 1901 | */ |
8434aa8b MC |
1902 | int iscsi_destroy_session(struct iscsi_cls_session *session) |
1903 | { | |
1904 | iscsi_remove_session(session); | |
632248aa | 1905 | ISCSI_DBG_TRANS_SESSION(session, "Completing session destruction\n"); |
8434aa8b MC |
1906 | iscsi_free_session(session); |
1907 | return 0; | |
1908 | } | |
7b8631b5 MC |
1909 | EXPORT_SYMBOL_GPL(iscsi_destroy_session); |
1910 | ||
7b8631b5 MC |
1911 | /** |
1912 | * iscsi_create_conn - create iscsi class connection | |
1913 | * @session: iscsi cls session | |
5d91e209 | 1914 | * @dd_size: private driver data size |
7b8631b5 MC |
1915 | * @cid: connection id |
1916 | * | |
1917 | * This can be called from a LLD or iscsi_transport. The connection | |
1918 | * is child of the session so cid must be unique for all connections | |
1919 | * on the session. | |
b5c7a12d MC |
1920 | * |
1921 | * Since we do not support MCS, cid will normally be zero. In some cases | |
1922 | * for software iscsi we could be trying to preallocate a connection struct | |
1923 | * in which case there could be two connection structs and cid would be | |
1924 | * non-zero. | |
eb44820c | 1925 | */ |
7b8631b5 | 1926 | struct iscsi_cls_conn * |
5d91e209 | 1927 | iscsi_create_conn(struct iscsi_cls_session *session, int dd_size, uint32_t cid) |
7b8631b5 MC |
1928 | { |
1929 | struct iscsi_transport *transport = session->transport; | |
7b8631b5 | 1930 | struct iscsi_cls_conn *conn; |
26974789 | 1931 | unsigned long flags; |
7b8631b5 MC |
1932 | int err; |
1933 | ||
5d91e209 | 1934 | conn = kzalloc(sizeof(*conn) + dd_size, GFP_KERNEL); |
7b8631b5 MC |
1935 | if (!conn) |
1936 | return NULL; | |
5d91e209 | 1937 | if (dd_size) |
7b8631b5 MC |
1938 | conn->dd_data = &conn[1]; |
1939 | ||
22a39fbb | 1940 | mutex_init(&conn->ep_mutex); |
7b8631b5 MC |
1941 | INIT_LIST_HEAD(&conn->conn_list); |
1942 | conn->transport = transport; | |
b5c7a12d | 1943 | conn->cid = cid; |
7b8631b5 MC |
1944 | |
1945 | /* this is released in the dev's release function */ | |
1946 | if (!get_device(&session->dev)) | |
43a145a3 | 1947 | goto free_conn; |
b5c7a12d | 1948 | |
71610f55 | 1949 | dev_set_name(&conn->dev, "connection%d:%u", session->sid, cid); |
7b8631b5 MC |
1950 | conn->dev.parent = &session->dev; |
1951 | conn->dev.release = iscsi_conn_release; | |
1952 | err = device_register(&conn->dev); | |
1953 | if (err) { | |
322d739d MC |
1954 | iscsi_cls_session_printk(KERN_ERR, session, "could not " |
1955 | "register connection's dev\n"); | |
7b8631b5 MC |
1956 | goto release_parent_ref; |
1957 | } | |
1958 | transport_register_device(&conn->dev); | |
26974789 MC |
1959 | |
1960 | spin_lock_irqsave(&connlock, flags); | |
1961 | list_add(&conn->conn_list, &connlist); | |
26974789 | 1962 | spin_unlock_irqrestore(&connlock, flags); |
632248aa MC |
1963 | |
1964 | ISCSI_DBG_TRANS_CONN(conn, "Completed conn creation\n"); | |
7b8631b5 MC |
1965 | return conn; |
1966 | ||
1967 | release_parent_ref: | |
1968 | put_device(&session->dev); | |
1969 | free_conn: | |
1970 | kfree(conn); | |
1971 | return NULL; | |
1972 | } | |
1973 | ||
1974 | EXPORT_SYMBOL_GPL(iscsi_create_conn); | |
1975 | ||
1976 | /** | |
1977 | * iscsi_destroy_conn - destroy iscsi class connection | |
eb44820c | 1978 | * @conn: iscsi cls session |
7b8631b5 | 1979 | * |
26974789 | 1980 | * This can be called from a LLD or iscsi_transport. |
eb44820c | 1981 | */ |
7b8631b5 MC |
1982 | int iscsi_destroy_conn(struct iscsi_cls_conn *conn) |
1983 | { | |
26974789 MC |
1984 | unsigned long flags; |
1985 | ||
1986 | spin_lock_irqsave(&connlock, flags); | |
26974789 MC |
1987 | list_del(&conn->conn_list); |
1988 | spin_unlock_irqrestore(&connlock, flags); | |
1989 | ||
7b8631b5 | 1990 | transport_unregister_device(&conn->dev); |
632248aa | 1991 | ISCSI_DBG_TRANS_CONN(conn, "Completing conn destruction\n"); |
7b8631b5 MC |
1992 | device_unregister(&conn->dev); |
1993 | return 0; | |
1994 | } | |
7b8631b5 MC |
1995 | EXPORT_SYMBOL_GPL(iscsi_destroy_conn); |
1996 | ||
7b8631b5 MC |
1997 | /* |
1998 | * iscsi interface functions | |
1999 | */ | |
0896b752 AA |
2000 | static struct iscsi_internal * |
2001 | iscsi_if_transport_lookup(struct iscsi_transport *tt) | |
2002 | { | |
2003 | struct iscsi_internal *priv; | |
2004 | unsigned long flags; | |
2005 | ||
2006 | spin_lock_irqsave(&iscsi_transport_lock, flags); | |
2007 | list_for_each_entry(priv, &iscsi_transports, list) { | |
2008 | if (tt == priv->iscsi_transport) { | |
2009 | spin_unlock_irqrestore(&iscsi_transport_lock, flags); | |
2010 | return priv; | |
2011 | } | |
2012 | } | |
2013 | spin_unlock_irqrestore(&iscsi_transport_lock, flags); | |
2014 | return NULL; | |
2015 | } | |
1da177e4 | 2016 | |
53cb8a1f | 2017 | static int |
43514774 | 2018 | iscsi_multicast_skb(struct sk_buff *skb, uint32_t group, gfp_t gfp) |
53cb8a1f | 2019 | { |
43514774 | 2020 | return nlmsg_multicast(nls, skb, 0, group, gfp); |
1da177e4 | 2021 | } |
1da177e4 | 2022 | |
7b7232f3 | 2023 | int iscsi_recv_pdu(struct iscsi_cls_conn *conn, struct iscsi_hdr *hdr, |
0896b752 | 2024 | char *data, uint32_t data_size) |
1da177e4 | 2025 | { |
0896b752 AA |
2026 | struct nlmsghdr *nlh; |
2027 | struct sk_buff *skb; | |
2028 | struct iscsi_uevent *ev; | |
0896b752 | 2029 | char *pdu; |
790f39a2 | 2030 | struct iscsi_internal *priv; |
e07ebea0 H |
2031 | int len = nlmsg_total_size(sizeof(*ev) + sizeof(struct iscsi_hdr) + |
2032 | data_size); | |
0896b752 | 2033 | |
790f39a2 MC |
2034 | priv = iscsi_if_transport_lookup(conn->transport); |
2035 | if (!priv) | |
2036 | return -EINVAL; | |
2037 | ||
43a145a3 | 2038 | skb = alloc_skb(len, GFP_ATOMIC); |
0896b752 | 2039 | if (!skb) { |
e5bd7b54 | 2040 | iscsi_conn_error_event(conn, ISCSI_ERR_CONN_FAILED); |
322d739d MC |
2041 | iscsi_cls_conn_printk(KERN_ERR, conn, "can not deliver " |
2042 | "control PDU: OOM\n"); | |
0896b752 AA |
2043 | return -ENOMEM; |
2044 | } | |
1da177e4 | 2045 | |
43514774 | 2046 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); |
e07ebea0 | 2047 | ev = nlmsg_data(nlh); |
0896b752 AA |
2048 | memset(ev, 0, sizeof(*ev)); |
2049 | ev->transport_handle = iscsi_handle(conn->transport); | |
2050 | ev->type = ISCSI_KEVENT_RECV_PDU; | |
b5c7a12d MC |
2051 | ev->r.recv_req.cid = conn->cid; |
2052 | ev->r.recv_req.sid = iscsi_conn_get_sid(conn); | |
0896b752 AA |
2053 | pdu = (char*)ev + sizeof(*ev); |
2054 | memcpy(pdu, hdr, sizeof(struct iscsi_hdr)); | |
2055 | memcpy(pdu + sizeof(struct iscsi_hdr), data, data_size); | |
1da177e4 | 2056 | |
43514774 | 2057 | return iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_ATOMIC); |
1da177e4 | 2058 | } |
0896b752 | 2059 | EXPORT_SYMBOL_GPL(iscsi_recv_pdu); |
1da177e4 | 2060 | |
43514774 MC |
2061 | int iscsi_offload_mesg(struct Scsi_Host *shost, |
2062 | struct iscsi_transport *transport, uint32_t type, | |
2063 | char *data, uint16_t data_size) | |
2064 | { | |
2065 | struct nlmsghdr *nlh; | |
2066 | struct sk_buff *skb; | |
2067 | struct iscsi_uevent *ev; | |
e07ebea0 | 2068 | int len = nlmsg_total_size(sizeof(*ev) + data_size); |
43514774 | 2069 | |
a541f840 | 2070 | skb = alloc_skb(len, GFP_ATOMIC); |
43514774 MC |
2071 | if (!skb) { |
2072 | printk(KERN_ERR "can not deliver iscsi offload message:OOM\n"); | |
2073 | return -ENOMEM; | |
2074 | } | |
2075 | ||
2076 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); | |
e07ebea0 | 2077 | ev = nlmsg_data(nlh); |
43514774 MC |
2078 | memset(ev, 0, sizeof(*ev)); |
2079 | ev->type = type; | |
2080 | ev->transport_handle = iscsi_handle(transport); | |
2081 | switch (type) { | |
2082 | case ISCSI_KEVENT_PATH_REQ: | |
2083 | ev->r.req_path.host_no = shost->host_no; | |
2084 | break; | |
2085 | case ISCSI_KEVENT_IF_DOWN: | |
2086 | ev->r.notify_if_down.host_no = shost->host_no; | |
2087 | break; | |
2088 | } | |
2089 | ||
2090 | memcpy((char *)ev + sizeof(*ev), data, data_size); | |
2091 | ||
a541f840 | 2092 | return iscsi_multicast_skb(skb, ISCSI_NL_GRP_UIP, GFP_ATOMIC); |
43514774 MC |
2093 | } |
2094 | EXPORT_SYMBOL_GPL(iscsi_offload_mesg); | |
2095 | ||
e5bd7b54 | 2096 | void iscsi_conn_error_event(struct iscsi_cls_conn *conn, enum iscsi_err error) |
1da177e4 | 2097 | { |
0896b752 AA |
2098 | struct nlmsghdr *nlh; |
2099 | struct sk_buff *skb; | |
2100 | struct iscsi_uevent *ev; | |
790f39a2 | 2101 | struct iscsi_internal *priv; |
e07ebea0 | 2102 | int len = nlmsg_total_size(sizeof(*ev)); |
0896b752 | 2103 | |
790f39a2 MC |
2104 | priv = iscsi_if_transport_lookup(conn->transport); |
2105 | if (!priv) | |
2106 | return; | |
2107 | ||
43a145a3 | 2108 | skb = alloc_skb(len, GFP_ATOMIC); |
0896b752 | 2109 | if (!skb) { |
322d739d MC |
2110 | iscsi_cls_conn_printk(KERN_ERR, conn, "gracefully ignored " |
2111 | "conn error (%d)\n", error); | |
0896b752 AA |
2112 | return; |
2113 | } | |
2114 | ||
43514774 | 2115 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); |
e07ebea0 | 2116 | ev = nlmsg_data(nlh); |
0896b752 AA |
2117 | ev->transport_handle = iscsi_handle(conn->transport); |
2118 | ev->type = ISCSI_KEVENT_CONN_ERROR; | |
0896b752 | 2119 | ev->r.connerror.error = error; |
b5c7a12d MC |
2120 | ev->r.connerror.cid = conn->cid; |
2121 | ev->r.connerror.sid = iscsi_conn_get_sid(conn); | |
1da177e4 | 2122 | |
43514774 | 2123 | iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_ATOMIC); |
1da177e4 | 2124 | |
322d739d MC |
2125 | iscsi_cls_conn_printk(KERN_INFO, conn, "detected conn error (%d)\n", |
2126 | error); | |
0896b752 | 2127 | } |
e5bd7b54 | 2128 | EXPORT_SYMBOL_GPL(iscsi_conn_error_event); |
0896b752 | 2129 | |
17fa575e MR |
2130 | void iscsi_conn_login_event(struct iscsi_cls_conn *conn, |
2131 | enum iscsi_conn_state state) | |
2132 | { | |
2133 | struct nlmsghdr *nlh; | |
2134 | struct sk_buff *skb; | |
2135 | struct iscsi_uevent *ev; | |
2136 | struct iscsi_internal *priv; | |
e07ebea0 | 2137 | int len = nlmsg_total_size(sizeof(*ev)); |
17fa575e MR |
2138 | |
2139 | priv = iscsi_if_transport_lookup(conn->transport); | |
2140 | if (!priv) | |
2141 | return; | |
2142 | ||
2143 | skb = alloc_skb(len, GFP_ATOMIC); | |
2144 | if (!skb) { | |
2145 | iscsi_cls_conn_printk(KERN_ERR, conn, "gracefully ignored " | |
2146 | "conn login (%d)\n", state); | |
2147 | return; | |
2148 | } | |
2149 | ||
2150 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); | |
e07ebea0 | 2151 | ev = nlmsg_data(nlh); |
17fa575e MR |
2152 | ev->transport_handle = iscsi_handle(conn->transport); |
2153 | ev->type = ISCSI_KEVENT_CONN_LOGIN_STATE; | |
2154 | ev->r.conn_login.state = state; | |
2155 | ev->r.conn_login.cid = conn->cid; | |
2156 | ev->r.conn_login.sid = iscsi_conn_get_sid(conn); | |
2157 | iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_ATOMIC); | |
2158 | ||
2159 | iscsi_cls_conn_printk(KERN_INFO, conn, "detected conn login (%d)\n", | |
2160 | state); | |
2161 | } | |
2162 | EXPORT_SYMBOL_GPL(iscsi_conn_login_event); | |
2163 | ||
a11e2545 VC |
2164 | void iscsi_post_host_event(uint32_t host_no, struct iscsi_transport *transport, |
2165 | enum iscsi_host_event_code code, uint32_t data_size, | |
2166 | uint8_t *data) | |
2167 | { | |
2168 | struct nlmsghdr *nlh; | |
2169 | struct sk_buff *skb; | |
2170 | struct iscsi_uevent *ev; | |
e07ebea0 | 2171 | int len = nlmsg_total_size(sizeof(*ev) + data_size); |
a11e2545 | 2172 | |
49d0e64b | 2173 | skb = alloc_skb(len, GFP_NOIO); |
a11e2545 VC |
2174 | if (!skb) { |
2175 | printk(KERN_ERR "gracefully ignored host event (%d):%d OOM\n", | |
2176 | host_no, code); | |
2177 | return; | |
2178 | } | |
2179 | ||
2180 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); | |
e07ebea0 | 2181 | ev = nlmsg_data(nlh); |
a11e2545 VC |
2182 | ev->transport_handle = iscsi_handle(transport); |
2183 | ev->type = ISCSI_KEVENT_HOST_EVENT; | |
2184 | ev->r.host_event.host_no = host_no; | |
2185 | ev->r.host_event.code = code; | |
2186 | ev->r.host_event.data_size = data_size; | |
2187 | ||
2188 | if (data_size) | |
2189 | memcpy((char *)ev + sizeof(*ev), data, data_size); | |
2190 | ||
49d0e64b | 2191 | iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_NOIO); |
a11e2545 VC |
2192 | } |
2193 | EXPORT_SYMBOL_GPL(iscsi_post_host_event); | |
2194 | ||
ac20c7bf VC |
2195 | void iscsi_ping_comp_event(uint32_t host_no, struct iscsi_transport *transport, |
2196 | uint32_t status, uint32_t pid, uint32_t data_size, | |
2197 | uint8_t *data) | |
2198 | { | |
2199 | struct nlmsghdr *nlh; | |
2200 | struct sk_buff *skb; | |
2201 | struct iscsi_uevent *ev; | |
e07ebea0 | 2202 | int len = nlmsg_total_size(sizeof(*ev) + data_size); |
ac20c7bf | 2203 | |
49d0e64b | 2204 | skb = alloc_skb(len, GFP_NOIO); |
ac20c7bf VC |
2205 | if (!skb) { |
2206 | printk(KERN_ERR "gracefully ignored ping comp: OOM\n"); | |
2207 | return; | |
2208 | } | |
2209 | ||
2210 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); | |
e07ebea0 | 2211 | ev = nlmsg_data(nlh); |
ac20c7bf VC |
2212 | ev->transport_handle = iscsi_handle(transport); |
2213 | ev->type = ISCSI_KEVENT_PING_COMP; | |
2214 | ev->r.ping_comp.host_no = host_no; | |
2215 | ev->r.ping_comp.status = status; | |
2216 | ev->r.ping_comp.pid = pid; | |
2217 | ev->r.ping_comp.data_size = data_size; | |
2218 | memcpy((char *)ev + sizeof(*ev), data, data_size); | |
2219 | ||
49d0e64b | 2220 | iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_NOIO); |
ac20c7bf VC |
2221 | } |
2222 | EXPORT_SYMBOL_GPL(iscsi_ping_comp_event); | |
2223 | ||
0896b752 | 2224 | static int |
43514774 MC |
2225 | iscsi_if_send_reply(uint32_t group, int seq, int type, int done, int multi, |
2226 | void *payload, int size) | |
0896b752 AA |
2227 | { |
2228 | struct sk_buff *skb; | |
2229 | struct nlmsghdr *nlh; | |
e07ebea0 | 2230 | int len = nlmsg_total_size(size); |
0896b752 AA |
2231 | int flags = multi ? NLM_F_MULTI : 0; |
2232 | int t = done ? NLMSG_DONE : type; | |
2233 | ||
43a145a3 | 2234 | skb = alloc_skb(len, GFP_ATOMIC); |
239a7dc2 MC |
2235 | if (!skb) { |
2236 | printk(KERN_ERR "Could not allocate skb to send reply.\n"); | |
2237 | return -ENOMEM; | |
2238 | } | |
0896b752 | 2239 | |
43514774 | 2240 | nlh = __nlmsg_put(skb, 0, 0, t, (len - sizeof(*nlh)), 0); |
0896b752 | 2241 | nlh->nlmsg_flags = flags; |
e07ebea0 | 2242 | memcpy(nlmsg_data(nlh), payload, size); |
43514774 | 2243 | return iscsi_multicast_skb(skb, group, GFP_ATOMIC); |
1da177e4 | 2244 | } |
1da177e4 | 2245 | |
7b8631b5 | 2246 | static int |
5b940adf | 2247 | iscsi_if_get_stats(struct iscsi_transport *transport, struct nlmsghdr *nlh) |
7b8631b5 | 2248 | { |
e07ebea0 | 2249 | struct iscsi_uevent *ev = nlmsg_data(nlh); |
7b8631b5 MC |
2250 | struct iscsi_stats *stats; |
2251 | struct sk_buff *skbstat; | |
2252 | struct iscsi_cls_conn *conn; | |
2253 | struct nlmsghdr *nlhstat; | |
2254 | struct iscsi_uevent *evstat; | |
790f39a2 | 2255 | struct iscsi_internal *priv; |
e07ebea0 H |
2256 | int len = nlmsg_total_size(sizeof(*ev) + |
2257 | sizeof(struct iscsi_stats) + | |
2258 | sizeof(struct iscsi_stats_custom) * | |
2259 | ISCSI_STATS_CUSTOM_MAX); | |
7b8631b5 | 2260 | int err = 0; |
0896b752 | 2261 | |
790f39a2 MC |
2262 | priv = iscsi_if_transport_lookup(transport); |
2263 | if (!priv) | |
2264 | return -EINVAL; | |
2265 | ||
b5c7a12d | 2266 | conn = iscsi_conn_lookup(ev->u.get_stats.sid, ev->u.get_stats.cid); |
7b8631b5 MC |
2267 | if (!conn) |
2268 | return -EEXIST; | |
0896b752 | 2269 | |
7b8631b5 MC |
2270 | do { |
2271 | int actual_size; | |
0896b752 | 2272 | |
43a145a3 | 2273 | skbstat = alloc_skb(len, GFP_ATOMIC); |
7b8631b5 | 2274 | if (!skbstat) { |
322d739d MC |
2275 | iscsi_cls_conn_printk(KERN_ERR, conn, "can not " |
2276 | "deliver stats: OOM\n"); | |
7b8631b5 MC |
2277 | return -ENOMEM; |
2278 | } | |
2279 | ||
43514774 | 2280 | nlhstat = __nlmsg_put(skbstat, 0, 0, 0, |
7b8631b5 | 2281 | (len - sizeof(*nlhstat)), 0); |
e07ebea0 | 2282 | evstat = nlmsg_data(nlhstat); |
7b8631b5 MC |
2283 | memset(evstat, 0, sizeof(*evstat)); |
2284 | evstat->transport_handle = iscsi_handle(conn->transport); | |
2285 | evstat->type = nlh->nlmsg_type; | |
b5c7a12d MC |
2286 | evstat->u.get_stats.cid = |
2287 | ev->u.get_stats.cid; | |
2288 | evstat->u.get_stats.sid = | |
2289 | ev->u.get_stats.sid; | |
7b8631b5 MC |
2290 | stats = (struct iscsi_stats *) |
2291 | ((char*)evstat + sizeof(*evstat)); | |
2292 | memset(stats, 0, sizeof(*stats)); | |
2293 | ||
7b7232f3 | 2294 | transport->get_stats(conn, stats); |
e07ebea0 H |
2295 | actual_size = nlmsg_total_size(sizeof(struct iscsi_uevent) + |
2296 | sizeof(struct iscsi_stats) + | |
2297 | sizeof(struct iscsi_stats_custom) * | |
2298 | stats->custom_length); | |
7b8631b5 | 2299 | actual_size -= sizeof(*nlhstat); |
e07ebea0 | 2300 | actual_size = nlmsg_msg_size(actual_size); |
5b940adf | 2301 | skb_trim(skbstat, NLMSG_ALIGN(actual_size)); |
7b8631b5 MC |
2302 | nlhstat->nlmsg_len = actual_size; |
2303 | ||
43514774 MC |
2304 | err = iscsi_multicast_skb(skbstat, ISCSI_NL_GRP_ISCSID, |
2305 | GFP_ATOMIC); | |
7b8631b5 MC |
2306 | } while (err < 0 && err != -ECONNREFUSED); |
2307 | ||
2308 | return err; | |
0896b752 AA |
2309 | } |
2310 | ||
53cb8a1f | 2311 | /** |
26974789 MC |
2312 | * iscsi_session_event - send session destr. completion event |
2313 | * @session: iscsi class session | |
2314 | * @event: type of event | |
eb44820c | 2315 | */ |
26974789 MC |
2316 | int iscsi_session_event(struct iscsi_cls_session *session, |
2317 | enum iscsi_uevent_e event) | |
53cb8a1f MC |
2318 | { |
2319 | struct iscsi_internal *priv; | |
53cb8a1f MC |
2320 | struct Scsi_Host *shost; |
2321 | struct iscsi_uevent *ev; | |
2322 | struct sk_buff *skb; | |
2323 | struct nlmsghdr *nlh; | |
e07ebea0 | 2324 | int rc, len = nlmsg_total_size(sizeof(*ev)); |
53cb8a1f | 2325 | |
26974789 | 2326 | priv = iscsi_if_transport_lookup(session->transport); |
53cb8a1f MC |
2327 | if (!priv) |
2328 | return -EINVAL; | |
53cb8a1f MC |
2329 | shost = iscsi_session_to_shost(session); |
2330 | ||
43a145a3 | 2331 | skb = alloc_skb(len, GFP_KERNEL); |
53cb8a1f | 2332 | if (!skb) { |
322d739d MC |
2333 | iscsi_cls_session_printk(KERN_ERR, session, |
2334 | "Cannot notify userspace of session " | |
2335 | "event %u\n", event); | |
53cb8a1f MC |
2336 | return -ENOMEM; |
2337 | } | |
2338 | ||
43514774 | 2339 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); |
e07ebea0 | 2340 | ev = nlmsg_data(nlh); |
26974789 | 2341 | ev->transport_handle = iscsi_handle(session->transport); |
53cb8a1f | 2342 | |
26974789 MC |
2343 | ev->type = event; |
2344 | switch (event) { | |
2345 | case ISCSI_KEVENT_DESTROY_SESSION: | |
2346 | ev->r.d_session.host_no = shost->host_no; | |
2347 | ev->r.d_session.sid = session->sid; | |
2348 | break; | |
2349 | case ISCSI_KEVENT_CREATE_SESSION: | |
2350 | ev->r.c_session_ret.host_no = shost->host_no; | |
2351 | ev->r.c_session_ret.sid = session->sid; | |
2352 | break; | |
2353 | case ISCSI_KEVENT_UNBIND_SESSION: | |
2354 | ev->r.unbind_session.host_no = shost->host_no; | |
2355 | ev->r.unbind_session.sid = session->sid; | |
2356 | break; | |
2357 | default: | |
322d739d MC |
2358 | iscsi_cls_session_printk(KERN_ERR, session, "Invalid event " |
2359 | "%u.\n", event); | |
26974789 | 2360 | kfree_skb(skb); |
53cb8a1f | 2361 | return -EINVAL; |
53cb8a1f MC |
2362 | } |
2363 | ||
53cb8a1f MC |
2364 | /* |
2365 | * this will occur if the daemon is not up, so we just warn | |
2366 | * the user and when the daemon is restarted it will handle it | |
2367 | */ | |
43514774 | 2368 | rc = iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_KERNEL); |
ff491a73 | 2369 | if (rc == -ESRCH) |
322d739d MC |
2370 | iscsi_cls_session_printk(KERN_ERR, session, |
2371 | "Cannot notify userspace of session " | |
2372 | "event %u. Check iscsi daemon\n", | |
2373 | event); | |
632248aa MC |
2374 | |
2375 | ISCSI_DBG_TRANS_SESSION(session, "Completed handling event %d rc %d\n", | |
2376 | event, rc); | |
53cb8a1f MC |
2377 | return rc; |
2378 | } | |
26974789 | 2379 | EXPORT_SYMBOL_GPL(iscsi_session_event); |
53cb8a1f | 2380 | |
0896b752 | 2381 | static int |
d82ff9be | 2382 | iscsi_if_create_session(struct iscsi_internal *priv, struct iscsi_endpoint *ep, |
0c70d84b MC |
2383 | struct iscsi_uevent *ev, pid_t pid, |
2384 | uint32_t initial_cmdsn, uint16_t cmds_max, | |
2385 | uint16_t queue_depth) | |
0896b752 AA |
2386 | { |
2387 | struct iscsi_transport *transport = priv->iscsi_transport; | |
7b7232f3 | 2388 | struct iscsi_cls_session *session; |
5e7facb7 | 2389 | struct Scsi_Host *shost; |
0896b752 | 2390 | |
d82ff9be | 2391 | session = transport->create_session(ep, cmds_max, queue_depth, |
5e7facb7 | 2392 | initial_cmdsn); |
7b7232f3 | 2393 | if (!session) |
7b8631b5 | 2394 | return -ENOMEM; |
0896b752 | 2395 | |
0c70d84b | 2396 | session->creator = pid; |
5e7facb7 MC |
2397 | shost = iscsi_session_to_shost(session); |
2398 | ev->r.c_session_ret.host_no = shost->host_no; | |
b5c7a12d | 2399 | ev->r.c_session_ret.sid = session->sid; |
632248aa MC |
2400 | ISCSI_DBG_TRANS_SESSION(session, |
2401 | "Completed creating transport session\n"); | |
0896b752 | 2402 | return 0; |
0896b752 AA |
2403 | } |
2404 | ||
2405 | static int | |
7b7232f3 | 2406 | iscsi_if_create_conn(struct iscsi_transport *transport, struct iscsi_uevent *ev) |
0896b752 | 2407 | { |
7b8631b5 | 2408 | struct iscsi_cls_conn *conn; |
7b7232f3 | 2409 | struct iscsi_cls_session *session; |
7b8631b5 | 2410 | |
b5c7a12d MC |
2411 | session = iscsi_session_lookup(ev->u.c_conn.sid); |
2412 | if (!session) { | |
322d739d | 2413 | printk(KERN_ERR "iscsi: invalid session %d.\n", |
b5c7a12d | 2414 | ev->u.c_conn.sid); |
7b8631b5 | 2415 | return -EINVAL; |
b5c7a12d | 2416 | } |
0896b752 | 2417 | |
7b7232f3 | 2418 | conn = transport->create_conn(session, ev->u.c_conn.cid); |
b5c7a12d | 2419 | if (!conn) { |
322d739d MC |
2420 | iscsi_cls_session_printk(KERN_ERR, session, |
2421 | "couldn't create a new connection."); | |
7b7232f3 | 2422 | return -ENOMEM; |
b5c7a12d | 2423 | } |
0896b752 | 2424 | |
b5c7a12d MC |
2425 | ev->r.c_conn_ret.sid = session->sid; |
2426 | ev->r.c_conn_ret.cid = conn->cid; | |
632248aa MC |
2427 | |
2428 | ISCSI_DBG_TRANS_CONN(conn, "Completed creating transport conn\n"); | |
0896b752 | 2429 | return 0; |
1da177e4 LT |
2430 | } |
2431 | ||
0896b752 AA |
2432 | static int |
2433 | iscsi_if_destroy_conn(struct iscsi_transport *transport, struct iscsi_uevent *ev) | |
2434 | { | |
7b8631b5 | 2435 | struct iscsi_cls_conn *conn; |
0896b752 | 2436 | |
b5c7a12d | 2437 | conn = iscsi_conn_lookup(ev->u.d_conn.sid, ev->u.d_conn.cid); |
0896b752 | 2438 | if (!conn) |
7b8631b5 | 2439 | return -EINVAL; |
0896b752 | 2440 | |
632248aa | 2441 | ISCSI_DBG_TRANS_CONN(conn, "Destroying transport conn\n"); |
7b8631b5 MC |
2442 | if (transport->destroy_conn) |
2443 | transport->destroy_conn(conn); | |
632248aa | 2444 | |
7b8631b5 | 2445 | return 0; |
0896b752 AA |
2446 | } |
2447 | ||
fd7255f5 MC |
2448 | static int |
2449 | iscsi_set_param(struct iscsi_transport *transport, struct iscsi_uevent *ev) | |
2450 | { | |
2451 | char *data = (char*)ev + sizeof(*ev); | |
2452 | struct iscsi_cls_conn *conn; | |
2453 | struct iscsi_cls_session *session; | |
a54a52ca | 2454 | int err = 0, value = 0; |
fd7255f5 MC |
2455 | |
2456 | session = iscsi_session_lookup(ev->u.set_param.sid); | |
2457 | conn = iscsi_conn_lookup(ev->u.set_param.sid, ev->u.set_param.cid); | |
2458 | if (!conn || !session) | |
2459 | return -EINVAL; | |
2460 | ||
2461 | switch (ev->u.set_param.param) { | |
30a6c652 | 2462 | case ISCSI_PARAM_SESS_RECOVERY_TMO: |
a54a52ca | 2463 | sscanf(data, "%d", &value); |
fdd46dcb | 2464 | session->recovery_tmo = value; |
30a6c652 | 2465 | break; |
fd7255f5 | 2466 | default: |
a54a52ca MC |
2467 | err = transport->set_param(conn, ev->u.set_param.param, |
2468 | data, ev->u.set_param.len); | |
fd7255f5 MC |
2469 | } |
2470 | ||
2471 | return err; | |
2472 | } | |
2473 | ||
10eb0f01 MC |
2474 | static int iscsi_if_ep_connect(struct iscsi_transport *transport, |
2475 | struct iscsi_uevent *ev, int msg_type) | |
2476 | { | |
2477 | struct iscsi_endpoint *ep; | |
2478 | struct sockaddr *dst_addr; | |
2479 | struct Scsi_Host *shost = NULL; | |
2480 | int non_blocking, err = 0; | |
2481 | ||
2482 | if (!transport->ep_connect) | |
2483 | return -EINVAL; | |
2484 | ||
2485 | if (msg_type == ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST) { | |
2486 | shost = scsi_host_lookup(ev->u.ep_connect_through_host.host_no); | |
2487 | if (!shost) { | |
2488 | printk(KERN_ERR "ep connect failed. Could not find " | |
2489 | "host no %u\n", | |
2490 | ev->u.ep_connect_through_host.host_no); | |
2491 | return -ENODEV; | |
2492 | } | |
2493 | non_blocking = ev->u.ep_connect_through_host.non_blocking; | |
2494 | } else | |
2495 | non_blocking = ev->u.ep_connect.non_blocking; | |
2496 | ||
2497 | dst_addr = (struct sockaddr *)((char*)ev + sizeof(*ev)); | |
2498 | ep = transport->ep_connect(shost, dst_addr, non_blocking); | |
2499 | if (IS_ERR(ep)) { | |
2500 | err = PTR_ERR(ep); | |
2501 | goto release_host; | |
2502 | } | |
2503 | ||
2504 | ev->r.ep_connect_ret.handle = ep->id; | |
2505 | release_host: | |
2506 | if (shost) | |
2507 | scsi_host_put(shost); | |
2508 | return err; | |
2509 | } | |
2510 | ||
22a39fbb MC |
2511 | static int iscsi_if_ep_disconnect(struct iscsi_transport *transport, |
2512 | u64 ep_handle) | |
2513 | { | |
2514 | struct iscsi_cls_conn *conn; | |
2515 | struct iscsi_endpoint *ep; | |
2516 | ||
2517 | if (!transport->ep_disconnect) | |
2518 | return -EINVAL; | |
2519 | ||
2520 | ep = iscsi_lookup_endpoint(ep_handle); | |
2521 | if (!ep) | |
2522 | return -EINVAL; | |
2523 | conn = ep->conn; | |
2524 | if (conn) { | |
2525 | mutex_lock(&conn->ep_mutex); | |
2526 | conn->ep = NULL; | |
2527 | mutex_unlock(&conn->ep_mutex); | |
2528 | } | |
2529 | ||
2530 | transport->ep_disconnect(ep); | |
2531 | return 0; | |
2532 | } | |
2533 | ||
264faaaa OG |
2534 | static int |
2535 | iscsi_if_transport_ep(struct iscsi_transport *transport, | |
2536 | struct iscsi_uevent *ev, int msg_type) | |
2537 | { | |
d82ff9be | 2538 | struct iscsi_endpoint *ep; |
264faaaa OG |
2539 | int rc = 0; |
2540 | ||
2541 | switch (msg_type) { | |
10eb0f01 | 2542 | case ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST: |
264faaaa | 2543 | case ISCSI_UEVENT_TRANSPORT_EP_CONNECT: |
10eb0f01 | 2544 | rc = iscsi_if_ep_connect(transport, ev, msg_type); |
264faaaa OG |
2545 | break; |
2546 | case ISCSI_UEVENT_TRANSPORT_EP_POLL: | |
2547 | if (!transport->ep_poll) | |
2548 | return -EINVAL; | |
2549 | ||
d82ff9be MC |
2550 | ep = iscsi_lookup_endpoint(ev->u.ep_poll.ep_handle); |
2551 | if (!ep) | |
2552 | return -EINVAL; | |
2553 | ||
2554 | ev->r.retcode = transport->ep_poll(ep, | |
264faaaa OG |
2555 | ev->u.ep_poll.timeout_ms); |
2556 | break; | |
2557 | case ISCSI_UEVENT_TRANSPORT_EP_DISCONNECT: | |
22a39fbb MC |
2558 | rc = iscsi_if_ep_disconnect(transport, |
2559 | ev->u.ep_disconnect.ep_handle); | |
264faaaa OG |
2560 | break; |
2561 | } | |
2562 | return rc; | |
2563 | } | |
2564 | ||
01cb225d MC |
2565 | static int |
2566 | iscsi_tgt_dscvr(struct iscsi_transport *transport, | |
2567 | struct iscsi_uevent *ev) | |
2568 | { | |
2174a04e | 2569 | struct Scsi_Host *shost; |
01cb225d | 2570 | struct sockaddr *dst_addr; |
2174a04e | 2571 | int err; |
01cb225d MC |
2572 | |
2573 | if (!transport->tgt_dscvr) | |
2574 | return -EINVAL; | |
2575 | ||
2174a04e | 2576 | shost = scsi_host_lookup(ev->u.tgt_dscvr.host_no); |
315cb0ad | 2577 | if (!shost) { |
2174a04e MC |
2578 | printk(KERN_ERR "target discovery could not find host no %u\n", |
2579 | ev->u.tgt_dscvr.host_no); | |
2580 | return -ENODEV; | |
2581 | } | |
2582 | ||
2583 | ||
01cb225d | 2584 | dst_addr = (struct sockaddr *)((char*)ev + sizeof(*ev)); |
2174a04e MC |
2585 | err = transport->tgt_dscvr(shost, ev->u.tgt_dscvr.type, |
2586 | ev->u.tgt_dscvr.enable, dst_addr); | |
2587 | scsi_host_put(shost); | |
2588 | return err; | |
01cb225d MC |
2589 | } |
2590 | ||
1d9bf13a MC |
2591 | static int |
2592 | iscsi_set_host_param(struct iscsi_transport *transport, | |
2593 | struct iscsi_uevent *ev) | |
2594 | { | |
2595 | char *data = (char*)ev + sizeof(*ev); | |
2596 | struct Scsi_Host *shost; | |
2597 | int err; | |
2598 | ||
2599 | if (!transport->set_host_param) | |
2600 | return -ENOSYS; | |
2601 | ||
2602 | shost = scsi_host_lookup(ev->u.set_host_param.host_no); | |
315cb0ad | 2603 | if (!shost) { |
1d9bf13a MC |
2604 | printk(KERN_ERR "set_host_param could not find host no %u\n", |
2605 | ev->u.set_host_param.host_no); | |
2606 | return -ENODEV; | |
2607 | } | |
2608 | ||
2609 | err = transport->set_host_param(shost, ev->u.set_host_param.param, | |
2610 | data, ev->u.set_host_param.len); | |
2611 | scsi_host_put(shost); | |
2612 | return err; | |
2613 | } | |
2614 | ||
0896b752 | 2615 | static int |
43514774 MC |
2616 | iscsi_set_path(struct iscsi_transport *transport, struct iscsi_uevent *ev) |
2617 | { | |
2618 | struct Scsi_Host *shost; | |
2619 | struct iscsi_path *params; | |
2620 | int err; | |
2621 | ||
2622 | if (!transport->set_path) | |
2623 | return -ENOSYS; | |
2624 | ||
2625 | shost = scsi_host_lookup(ev->u.set_path.host_no); | |
2626 | if (!shost) { | |
2627 | printk(KERN_ERR "set path could not find host no %u\n", | |
2628 | ev->u.set_path.host_no); | |
2629 | return -ENODEV; | |
2630 | } | |
2631 | ||
2632 | params = (struct iscsi_path *)((char *)ev + sizeof(*ev)); | |
2633 | err = transport->set_path(shost, params); | |
2634 | ||
2635 | scsi_host_put(shost); | |
2636 | return err; | |
2637 | } | |
2638 | ||
56c155b5 MC |
2639 | static int |
2640 | iscsi_set_iface_params(struct iscsi_transport *transport, | |
00c31889 | 2641 | struct iscsi_uevent *ev, uint32_t len) |
56c155b5 MC |
2642 | { |
2643 | char *data = (char *)ev + sizeof(*ev); | |
2644 | struct Scsi_Host *shost; | |
2645 | int err; | |
2646 | ||
2647 | if (!transport->set_iface_param) | |
2648 | return -ENOSYS; | |
2649 | ||
2650 | shost = scsi_host_lookup(ev->u.set_iface_params.host_no); | |
2651 | if (!shost) { | |
2652 | printk(KERN_ERR "set_iface_params could not find host no %u\n", | |
2653 | ev->u.set_iface_params.host_no); | |
2654 | return -ENODEV; | |
2655 | } | |
2656 | ||
00c31889 | 2657 | err = transport->set_iface_param(shost, data, len); |
56c155b5 MC |
2658 | scsi_host_put(shost); |
2659 | return err; | |
2660 | } | |
2661 | ||
ac20c7bf VC |
2662 | static int |
2663 | iscsi_send_ping(struct iscsi_transport *transport, struct iscsi_uevent *ev) | |
2664 | { | |
2665 | struct Scsi_Host *shost; | |
2666 | struct sockaddr *dst_addr; | |
2667 | int err; | |
2668 | ||
2669 | if (!transport->send_ping) | |
2670 | return -ENOSYS; | |
2671 | ||
2672 | shost = scsi_host_lookup(ev->u.iscsi_ping.host_no); | |
2673 | if (!shost) { | |
2674 | printk(KERN_ERR "iscsi_ping could not find host no %u\n", | |
2675 | ev->u.iscsi_ping.host_no); | |
2676 | return -ENODEV; | |
2677 | } | |
2678 | ||
2679 | dst_addr = (struct sockaddr *)((char *)ev + sizeof(*ev)); | |
2680 | err = transport->send_ping(shost, ev->u.iscsi_ping.iface_num, | |
2681 | ev->u.iscsi_ping.iface_type, | |
2682 | ev->u.iscsi_ping.payload_size, | |
2683 | ev->u.iscsi_ping.pid, | |
2684 | dst_addr); | |
2685 | scsi_host_put(shost); | |
2686 | return err; | |
2687 | } | |
2688 | ||
6260a5d2 NJ |
2689 | static int |
2690 | iscsi_get_chap(struct iscsi_transport *transport, struct nlmsghdr *nlh) | |
2691 | { | |
e07ebea0 | 2692 | struct iscsi_uevent *ev = nlmsg_data(nlh); |
6260a5d2 NJ |
2693 | struct Scsi_Host *shost = NULL; |
2694 | struct iscsi_chap_rec *chap_rec; | |
2695 | struct iscsi_internal *priv; | |
2696 | struct sk_buff *skbchap; | |
2697 | struct nlmsghdr *nlhchap; | |
2698 | struct iscsi_uevent *evchap; | |
2699 | uint32_t chap_buf_size; | |
2700 | int len, err = 0; | |
2701 | char *buf; | |
2702 | ||
2703 | if (!transport->get_chap) | |
2704 | return -EINVAL; | |
2705 | ||
2706 | priv = iscsi_if_transport_lookup(transport); | |
2707 | if (!priv) | |
2708 | return -EINVAL; | |
2709 | ||
2710 | chap_buf_size = (ev->u.get_chap.num_entries * sizeof(*chap_rec)); | |
e07ebea0 | 2711 | len = nlmsg_total_size(sizeof(*ev) + chap_buf_size); |
6260a5d2 NJ |
2712 | |
2713 | shost = scsi_host_lookup(ev->u.get_chap.host_no); | |
2714 | if (!shost) { | |
2715 | printk(KERN_ERR "%s: failed. Cound not find host no %u\n", | |
2716 | __func__, ev->u.get_chap.host_no); | |
2717 | return -ENODEV; | |
2718 | } | |
2719 | ||
2720 | do { | |
2721 | int actual_size; | |
2722 | ||
2723 | skbchap = alloc_skb(len, GFP_KERNEL); | |
2724 | if (!skbchap) { | |
2725 | printk(KERN_ERR "can not deliver chap: OOM\n"); | |
2726 | err = -ENOMEM; | |
2727 | goto exit_get_chap; | |
2728 | } | |
2729 | ||
2730 | nlhchap = __nlmsg_put(skbchap, 0, 0, 0, | |
2731 | (len - sizeof(*nlhchap)), 0); | |
e07ebea0 | 2732 | evchap = nlmsg_data(nlhchap); |
6260a5d2 NJ |
2733 | memset(evchap, 0, sizeof(*evchap)); |
2734 | evchap->transport_handle = iscsi_handle(transport); | |
2735 | evchap->type = nlh->nlmsg_type; | |
2736 | evchap->u.get_chap.host_no = ev->u.get_chap.host_no; | |
2737 | evchap->u.get_chap.chap_tbl_idx = ev->u.get_chap.chap_tbl_idx; | |
2738 | evchap->u.get_chap.num_entries = ev->u.get_chap.num_entries; | |
2739 | buf = (char *) ((char *)evchap + sizeof(*evchap)); | |
2740 | memset(buf, 0, chap_buf_size); | |
2741 | ||
2742 | err = transport->get_chap(shost, ev->u.get_chap.chap_tbl_idx, | |
2743 | &evchap->u.get_chap.num_entries, buf); | |
2744 | ||
e07ebea0 | 2745 | actual_size = nlmsg_total_size(sizeof(*ev) + chap_buf_size); |
6260a5d2 NJ |
2746 | skb_trim(skbchap, NLMSG_ALIGN(actual_size)); |
2747 | nlhchap->nlmsg_len = actual_size; | |
2748 | ||
2749 | err = iscsi_multicast_skb(skbchap, ISCSI_NL_GRP_ISCSID, | |
2750 | GFP_KERNEL); | |
2751 | } while (err < 0 && err != -ECONNREFUSED); | |
2752 | ||
2753 | exit_get_chap: | |
2754 | scsi_host_put(shost); | |
2755 | return err; | |
2756 | } | |
2757 | ||
2758 | static int iscsi_delete_chap(struct iscsi_transport *transport, | |
2759 | struct iscsi_uevent *ev) | |
2760 | { | |
2761 | struct Scsi_Host *shost; | |
2762 | int err = 0; | |
2763 | ||
2764 | if (!transport->delete_chap) | |
2765 | return -ENOSYS; | |
2766 | ||
2767 | shost = scsi_host_lookup(ev->u.delete_chap.host_no); | |
2768 | if (!shost) { | |
2769 | printk(KERN_ERR "%s could not find host no %u\n", | |
2770 | __func__, ev->u.delete_chap.host_no); | |
2771 | return -ENODEV; | |
2772 | } | |
2773 | ||
2774 | err = transport->delete_chap(shost, ev->u.delete_chap.chap_tbl_idx); | |
2775 | scsi_host_put(shost); | |
2776 | return err; | |
2777 | } | |
2778 | ||
c6a4bb2e AC |
2779 | static const struct { |
2780 | enum iscsi_discovery_parent_type value; | |
2781 | char *name; | |
2782 | } iscsi_discovery_parent_names[] = { | |
2783 | {ISCSI_DISC_PARENT_UNKNOWN, "Unknown" }, | |
2784 | {ISCSI_DISC_PARENT_SENDTGT, "Sendtarget" }, | |
2785 | {ISCSI_DISC_PARENT_ISNS, "isns" }, | |
2786 | }; | |
2787 | ||
2788 | char *iscsi_get_discovery_parent_name(int parent_type) | |
2789 | { | |
2790 | int i; | |
2791 | char *state = "Unknown!"; | |
2792 | ||
2793 | for (i = 0; i < ARRAY_SIZE(iscsi_discovery_parent_names); i++) { | |
2794 | if (iscsi_discovery_parent_names[i].value & parent_type) { | |
2795 | state = iscsi_discovery_parent_names[i].name; | |
2796 | break; | |
2797 | } | |
2798 | } | |
2799 | return state; | |
2800 | } | |
2801 | EXPORT_SYMBOL_GPL(iscsi_get_discovery_parent_name); | |
2802 | ||
2803 | static int iscsi_set_flashnode_param(struct iscsi_transport *transport, | |
2804 | struct iscsi_uevent *ev, uint32_t len) | |
2805 | { | |
2806 | char *data = (char *)ev + sizeof(*ev); | |
2807 | struct Scsi_Host *shost; | |
2808 | struct iscsi_bus_flash_session *fnode_sess; | |
2809 | struct iscsi_bus_flash_conn *fnode_conn; | |
2810 | struct device *dev; | |
2811 | uint32_t *idx; | |
2812 | int err = 0; | |
2813 | ||
2814 | if (!transport->set_flashnode_param) { | |
2815 | err = -ENOSYS; | |
2816 | goto exit_set_fnode; | |
2817 | } | |
2818 | ||
2819 | shost = scsi_host_lookup(ev->u.set_flashnode.host_no); | |
2820 | if (!shost) { | |
2821 | pr_err("%s could not find host no %u\n", | |
2822 | __func__, ev->u.set_flashnode.host_no); | |
2823 | err = -ENODEV; | |
2824 | goto put_host; | |
2825 | } | |
2826 | ||
2827 | idx = &ev->u.set_flashnode.flashnode_idx; | |
2828 | fnode_sess = iscsi_get_flashnode_by_index(shost, idx, | |
2829 | flashnode_match_index); | |
2830 | if (!fnode_sess) { | |
2831 | pr_err("%s could not find flashnode %u for host no %u\n", | |
2832 | __func__, *idx, ev->u.set_flashnode.host_no); | |
2833 | err = -ENODEV; | |
2834 | goto put_host; | |
2835 | } | |
2836 | ||
2837 | dev = iscsi_find_flashnode_conn(fnode_sess, NULL, | |
2838 | iscsi_is_flashnode_conn_dev); | |
2839 | if (!dev) { | |
2840 | err = -ENODEV; | |
2841 | goto put_host; | |
2842 | } | |
2843 | ||
2844 | fnode_conn = iscsi_dev_to_flash_conn(dev); | |
2845 | err = transport->set_flashnode_param(fnode_sess, fnode_conn, data, len); | |
2846 | ||
2847 | put_host: | |
2848 | scsi_host_put(shost); | |
2849 | ||
2850 | exit_set_fnode: | |
2851 | return err; | |
2852 | } | |
2853 | ||
2854 | static int iscsi_new_flashnode(struct iscsi_transport *transport, | |
2855 | struct iscsi_uevent *ev, uint32_t len) | |
2856 | { | |
2857 | char *data = (char *)ev + sizeof(*ev); | |
2858 | struct Scsi_Host *shost; | |
2859 | int index; | |
2860 | int err = 0; | |
2861 | ||
2862 | if (!transport->new_flashnode) { | |
2863 | err = -ENOSYS; | |
2864 | goto exit_new_fnode; | |
2865 | } | |
2866 | ||
2867 | shost = scsi_host_lookup(ev->u.new_flashnode.host_no); | |
2868 | if (!shost) { | |
2869 | pr_err("%s could not find host no %u\n", | |
2870 | __func__, ev->u.new_flashnode.host_no); | |
2871 | err = -ENODEV; | |
2872 | goto put_host; | |
2873 | } | |
2874 | ||
2875 | index = transport->new_flashnode(shost, data, len); | |
2876 | ||
2877 | if (index >= 0) | |
2878 | ev->r.new_flashnode_ret.flashnode_idx = index; | |
2879 | else | |
2880 | err = -EIO; | |
2881 | ||
2882 | put_host: | |
2883 | scsi_host_put(shost); | |
2884 | ||
2885 | exit_new_fnode: | |
2886 | return err; | |
2887 | } | |
2888 | ||
2889 | static int iscsi_del_flashnode(struct iscsi_transport *transport, | |
2890 | struct iscsi_uevent *ev) | |
2891 | { | |
2892 | struct Scsi_Host *shost; | |
2893 | struct iscsi_bus_flash_session *fnode_sess; | |
2894 | uint32_t *idx; | |
2895 | int err = 0; | |
2896 | ||
2897 | if (!transport->del_flashnode) { | |
2898 | err = -ENOSYS; | |
2899 | goto exit_del_fnode; | |
2900 | } | |
2901 | ||
2902 | shost = scsi_host_lookup(ev->u.del_flashnode.host_no); | |
2903 | if (!shost) { | |
2904 | pr_err("%s could not find host no %u\n", | |
2905 | __func__, ev->u.del_flashnode.host_no); | |
2906 | err = -ENODEV; | |
2907 | goto put_host; | |
2908 | } | |
2909 | ||
2910 | idx = &ev->u.del_flashnode.flashnode_idx; | |
2911 | fnode_sess = iscsi_get_flashnode_by_index(shost, idx, | |
2912 | flashnode_match_index); | |
2913 | if (!fnode_sess) { | |
2914 | pr_err("%s could not find flashnode %u for host no %u\n", | |
2915 | __func__, *idx, ev->u.del_flashnode.host_no); | |
2916 | err = -ENODEV; | |
2917 | goto put_host; | |
2918 | } | |
2919 | ||
2920 | err = transport->del_flashnode(fnode_sess); | |
2921 | ||
2922 | put_host: | |
2923 | scsi_host_put(shost); | |
2924 | ||
2925 | exit_del_fnode: | |
2926 | return err; | |
2927 | } | |
2928 | ||
2929 | static int iscsi_login_flashnode(struct iscsi_transport *transport, | |
2930 | struct iscsi_uevent *ev) | |
2931 | { | |
2932 | struct Scsi_Host *shost; | |
2933 | struct iscsi_bus_flash_session *fnode_sess; | |
2934 | struct iscsi_bus_flash_conn *fnode_conn; | |
2935 | struct device *dev; | |
2936 | uint32_t *idx; | |
2937 | int err = 0; | |
2938 | ||
2939 | if (!transport->login_flashnode) { | |
2940 | err = -ENOSYS; | |
2941 | goto exit_login_fnode; | |
2942 | } | |
2943 | ||
2944 | shost = scsi_host_lookup(ev->u.login_flashnode.host_no); | |
2945 | if (!shost) { | |
2946 | pr_err("%s could not find host no %u\n", | |
2947 | __func__, ev->u.login_flashnode.host_no); | |
2948 | err = -ENODEV; | |
2949 | goto put_host; | |
2950 | } | |
2951 | ||
2952 | idx = &ev->u.login_flashnode.flashnode_idx; | |
2953 | fnode_sess = iscsi_get_flashnode_by_index(shost, idx, | |
2954 | flashnode_match_index); | |
2955 | if (!fnode_sess) { | |
2956 | pr_err("%s could not find flashnode %u for host no %u\n", | |
2957 | __func__, *idx, ev->u.login_flashnode.host_no); | |
2958 | err = -ENODEV; | |
2959 | goto put_host; | |
2960 | } | |
2961 | ||
2962 | dev = iscsi_find_flashnode_conn(fnode_sess, NULL, | |
2963 | iscsi_is_flashnode_conn_dev); | |
2964 | if (!dev) { | |
2965 | err = -ENODEV; | |
2966 | goto put_host; | |
2967 | } | |
2968 | ||
2969 | fnode_conn = iscsi_dev_to_flash_conn(dev); | |
2970 | err = transport->login_flashnode(fnode_sess, fnode_conn); | |
2971 | ||
2972 | put_host: | |
2973 | scsi_host_put(shost); | |
2974 | ||
2975 | exit_login_fnode: | |
2976 | return err; | |
2977 | } | |
2978 | ||
2979 | static int iscsi_logout_flashnode(struct iscsi_transport *transport, | |
2980 | struct iscsi_uevent *ev) | |
2981 | { | |
2982 | struct Scsi_Host *shost; | |
2983 | struct iscsi_bus_flash_session *fnode_sess; | |
2984 | struct iscsi_bus_flash_conn *fnode_conn; | |
2985 | struct device *dev; | |
2986 | uint32_t *idx; | |
2987 | int err = 0; | |
2988 | ||
2989 | if (!transport->logout_flashnode) { | |
2990 | err = -ENOSYS; | |
2991 | goto exit_logout_fnode; | |
2992 | } | |
2993 | ||
2994 | shost = scsi_host_lookup(ev->u.logout_flashnode.host_no); | |
2995 | if (!shost) { | |
2996 | pr_err("%s could not find host no %u\n", | |
2997 | __func__, ev->u.logout_flashnode.host_no); | |
2998 | err = -ENODEV; | |
2999 | goto put_host; | |
3000 | } | |
3001 | ||
3002 | idx = &ev->u.logout_flashnode.flashnode_idx; | |
3003 | fnode_sess = iscsi_get_flashnode_by_index(shost, idx, | |
3004 | flashnode_match_index); | |
3005 | if (!fnode_sess) { | |
3006 | pr_err("%s could not find flashnode %u for host no %u\n", | |
3007 | __func__, *idx, ev->u.logout_flashnode.host_no); | |
3008 | err = -ENODEV; | |
3009 | goto put_host; | |
3010 | } | |
3011 | ||
3012 | dev = iscsi_find_flashnode_conn(fnode_sess, NULL, | |
3013 | iscsi_is_flashnode_conn_dev); | |
3014 | if (!dev) { | |
3015 | err = -ENODEV; | |
3016 | goto put_host; | |
3017 | } | |
3018 | ||
3019 | fnode_conn = iscsi_dev_to_flash_conn(dev); | |
3020 | ||
3021 | err = transport->logout_flashnode(fnode_sess, fnode_conn); | |
3022 | ||
3023 | put_host: | |
3024 | scsi_host_put(shost); | |
3025 | ||
3026 | exit_logout_fnode: | |
3027 | return err; | |
3028 | } | |
3029 | ||
3030 | static int iscsi_logout_flashnode_sid(struct iscsi_transport *transport, | |
3031 | struct iscsi_uevent *ev) | |
3032 | { | |
3033 | struct Scsi_Host *shost; | |
3034 | struct iscsi_cls_session *session; | |
3035 | int err = 0; | |
3036 | ||
3037 | if (!transport->logout_flashnode_sid) { | |
3038 | err = -ENOSYS; | |
3039 | goto exit_logout_sid; | |
3040 | } | |
3041 | ||
3042 | shost = scsi_host_lookup(ev->u.logout_flashnode_sid.host_no); | |
3043 | if (!shost) { | |
3044 | pr_err("%s could not find host no %u\n", | |
3045 | __func__, ev->u.logout_flashnode.host_no); | |
3046 | err = -ENODEV; | |
3047 | goto put_host; | |
3048 | } | |
3049 | ||
3050 | session = iscsi_session_lookup(ev->u.logout_flashnode_sid.sid); | |
3051 | if (!session) { | |
3052 | pr_err("%s could not find session id %u\n", | |
3053 | __func__, ev->u.logout_flashnode_sid.sid); | |
3054 | err = -EINVAL; | |
3055 | goto put_host; | |
3056 | } | |
3057 | ||
3058 | err = transport->logout_flashnode_sid(session); | |
3059 | ||
3060 | put_host: | |
3061 | scsi_host_put(shost); | |
3062 | ||
3063 | exit_logout_sid: | |
3064 | return err; | |
3065 | } | |
3066 | ||
43514774 MC |
3067 | static int |
3068 | iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group) | |
0896b752 AA |
3069 | { |
3070 | int err = 0; | |
e07ebea0 | 3071 | struct iscsi_uevent *ev = nlmsg_data(nlh); |
0896b752 AA |
3072 | struct iscsi_transport *transport = NULL; |
3073 | struct iscsi_internal *priv; | |
7b7232f3 MC |
3074 | struct iscsi_cls_session *session; |
3075 | struct iscsi_cls_conn *conn; | |
d82ff9be | 3076 | struct iscsi_endpoint *ep = NULL; |
0896b752 | 3077 | |
43514774 MC |
3078 | if (nlh->nlmsg_type == ISCSI_UEVENT_PATH_UPDATE) |
3079 | *group = ISCSI_NL_GRP_UIP; | |
3080 | else | |
3081 | *group = ISCSI_NL_GRP_ISCSID; | |
3082 | ||
0896b752 AA |
3083 | priv = iscsi_if_transport_lookup(iscsi_ptr(ev->transport_handle)); |
3084 | if (!priv) | |
3085 | return -EINVAL; | |
3086 | transport = priv->iscsi_transport; | |
3087 | ||
7b7232f3 MC |
3088 | if (!try_module_get(transport->owner)) |
3089 | return -EINVAL; | |
3090 | ||
0896b752 AA |
3091 | switch (nlh->nlmsg_type) { |
3092 | case ISCSI_UEVENT_CREATE_SESSION: | |
d82ff9be | 3093 | err = iscsi_if_create_session(priv, ep, ev, |
15e47304 | 3094 | NETLINK_CB(skb).portid, |
40753caa MC |
3095 | ev->u.c_session.initial_cmdsn, |
3096 | ev->u.c_session.cmds_max, | |
3097 | ev->u.c_session.queue_depth); | |
3098 | break; | |
3099 | case ISCSI_UEVENT_CREATE_BOUND_SESSION: | |
d82ff9be | 3100 | ep = iscsi_lookup_endpoint(ev->u.c_bound_session.ep_handle); |
c95fddc7 MC |
3101 | if (!ep) { |
3102 | err = -EINVAL; | |
3103 | break; | |
3104 | } | |
d82ff9be MC |
3105 | |
3106 | err = iscsi_if_create_session(priv, ep, ev, | |
15e47304 | 3107 | NETLINK_CB(skb).portid, |
40753caa MC |
3108 | ev->u.c_bound_session.initial_cmdsn, |
3109 | ev->u.c_bound_session.cmds_max, | |
3110 | ev->u.c_bound_session.queue_depth); | |
0896b752 AA |
3111 | break; |
3112 | case ISCSI_UEVENT_DESTROY_SESSION: | |
b5c7a12d | 3113 | session = iscsi_session_lookup(ev->u.d_session.sid); |
26974789 | 3114 | if (session) |
7b7232f3 | 3115 | transport->destroy_session(session); |
26974789 MC |
3116 | else |
3117 | err = -EINVAL; | |
3118 | break; | |
3119 | case ISCSI_UEVENT_UNBIND_SESSION: | |
3120 | session = iscsi_session_lookup(ev->u.d_session.sid); | |
3121 | if (session) | |
06d25af4 MC |
3122 | scsi_queue_work(iscsi_session_to_shost(session), |
3123 | &session->unbind_work); | |
26974789 | 3124 | else |
7b7232f3 | 3125 | err = -EINVAL; |
0896b752 AA |
3126 | break; |
3127 | case ISCSI_UEVENT_CREATE_CONN: | |
3128 | err = iscsi_if_create_conn(transport, ev); | |
3129 | break; | |
3130 | case ISCSI_UEVENT_DESTROY_CONN: | |
3131 | err = iscsi_if_destroy_conn(transport, ev); | |
3132 | break; | |
3133 | case ISCSI_UEVENT_BIND_CONN: | |
b5c7a12d MC |
3134 | session = iscsi_session_lookup(ev->u.b_conn.sid); |
3135 | conn = iscsi_conn_lookup(ev->u.b_conn.sid, ev->u.b_conn.cid); | |
7b7232f3 | 3136 | |
22a39fbb MC |
3137 | if (conn && conn->ep) |
3138 | iscsi_if_ep_disconnect(transport, conn->ep->id); | |
3139 | ||
3140 | if (!session || !conn) { | |
7b7232f3 | 3141 | err = -EINVAL; |
22a39fbb MC |
3142 | break; |
3143 | } | |
3144 | ||
3145 | ev->r.retcode = transport->bind_conn(session, conn, | |
3146 | ev->u.b_conn.transport_eph, | |
3147 | ev->u.b_conn.is_leading); | |
3148 | if (ev->r.retcode || !transport->ep_connect) | |
3149 | break; | |
3150 | ||
3151 | ep = iscsi_lookup_endpoint(ev->u.b_conn.transport_eph); | |
3152 | if (ep) { | |
3153 | ep->conn = conn; | |
3154 | ||
3155 | mutex_lock(&conn->ep_mutex); | |
3156 | conn->ep = ep; | |
3157 | mutex_unlock(&conn->ep_mutex); | |
3158 | } else | |
3159 | iscsi_cls_conn_printk(KERN_ERR, conn, | |
3160 | "Could not set ep conn " | |
3161 | "binding\n"); | |
0896b752 AA |
3162 | break; |
3163 | case ISCSI_UEVENT_SET_PARAM: | |
fd7255f5 | 3164 | err = iscsi_set_param(transport, ev); |
0896b752 AA |
3165 | break; |
3166 | case ISCSI_UEVENT_START_CONN: | |
b5c7a12d | 3167 | conn = iscsi_conn_lookup(ev->u.start_conn.sid, ev->u.start_conn.cid); |
7b7232f3 MC |
3168 | if (conn) |
3169 | ev->r.retcode = transport->start_conn(conn); | |
3170 | else | |
3171 | err = -EINVAL; | |
0896b752 AA |
3172 | break; |
3173 | case ISCSI_UEVENT_STOP_CONN: | |
b5c7a12d | 3174 | conn = iscsi_conn_lookup(ev->u.stop_conn.sid, ev->u.stop_conn.cid); |
7b7232f3 MC |
3175 | if (conn) |
3176 | transport->stop_conn(conn, ev->u.stop_conn.flag); | |
3177 | else | |
3178 | err = -EINVAL; | |
0896b752 AA |
3179 | break; |
3180 | case ISCSI_UEVENT_SEND_PDU: | |
b5c7a12d | 3181 | conn = iscsi_conn_lookup(ev->u.send_pdu.sid, ev->u.send_pdu.cid); |
7b7232f3 MC |
3182 | if (conn) |
3183 | ev->r.retcode = transport->send_pdu(conn, | |
3184 | (struct iscsi_hdr*)((char*)ev + sizeof(*ev)), | |
3185 | (char*)ev + sizeof(*ev) + ev->u.send_pdu.hdr_size, | |
3186 | ev->u.send_pdu.data_size); | |
3187 | else | |
3188 | err = -EINVAL; | |
0896b752 AA |
3189 | break; |
3190 | case ISCSI_UEVENT_GET_STATS: | |
5b940adf | 3191 | err = iscsi_if_get_stats(transport, nlh); |
0896b752 | 3192 | break; |
264faaaa OG |
3193 | case ISCSI_UEVENT_TRANSPORT_EP_CONNECT: |
3194 | case ISCSI_UEVENT_TRANSPORT_EP_POLL: | |
3195 | case ISCSI_UEVENT_TRANSPORT_EP_DISCONNECT: | |
10eb0f01 | 3196 | case ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST: |
264faaaa OG |
3197 | err = iscsi_if_transport_ep(transport, ev, nlh->nlmsg_type); |
3198 | break; | |
01cb225d MC |
3199 | case ISCSI_UEVENT_TGT_DSCVR: |
3200 | err = iscsi_tgt_dscvr(transport, ev); | |
3201 | break; | |
1d9bf13a MC |
3202 | case ISCSI_UEVENT_SET_HOST_PARAM: |
3203 | err = iscsi_set_host_param(transport, ev); | |
3204 | break; | |
43514774 MC |
3205 | case ISCSI_UEVENT_PATH_UPDATE: |
3206 | err = iscsi_set_path(transport, ev); | |
3207 | break; | |
56c155b5 | 3208 | case ISCSI_UEVENT_SET_IFACE_PARAMS: |
00c31889 MC |
3209 | err = iscsi_set_iface_params(transport, ev, |
3210 | nlmsg_attrlen(nlh, sizeof(*ev))); | |
56c155b5 | 3211 | break; |
ac20c7bf VC |
3212 | case ISCSI_UEVENT_PING: |
3213 | err = iscsi_send_ping(transport, ev); | |
3214 | break; | |
6260a5d2 NJ |
3215 | case ISCSI_UEVENT_GET_CHAP: |
3216 | err = iscsi_get_chap(transport, nlh); | |
3217 | break; | |
3218 | case ISCSI_UEVENT_DELETE_CHAP: | |
3219 | err = iscsi_delete_chap(transport, ev); | |
3220 | break; | |
c6a4bb2e AC |
3221 | case ISCSI_UEVENT_SET_FLASHNODE_PARAMS: |
3222 | err = iscsi_set_flashnode_param(transport, ev, | |
3223 | nlmsg_attrlen(nlh, | |
3224 | sizeof(*ev))); | |
3225 | break; | |
3226 | case ISCSI_UEVENT_NEW_FLASHNODE: | |
3227 | err = iscsi_new_flashnode(transport, ev, | |
3228 | nlmsg_attrlen(nlh, sizeof(*ev))); | |
3229 | break; | |
3230 | case ISCSI_UEVENT_DEL_FLASHNODE: | |
3231 | err = iscsi_del_flashnode(transport, ev); | |
3232 | break; | |
3233 | case ISCSI_UEVENT_LOGIN_FLASHNODE: | |
3234 | err = iscsi_login_flashnode(transport, ev); | |
3235 | break; | |
3236 | case ISCSI_UEVENT_LOGOUT_FLASHNODE: | |
3237 | err = iscsi_logout_flashnode(transport, ev); | |
3238 | break; | |
3239 | case ISCSI_UEVENT_LOGOUT_FLASHNODE_SID: | |
3240 | err = iscsi_logout_flashnode_sid(transport, ev); | |
3241 | break; | |
0896b752 | 3242 | default: |
1d9bf13a | 3243 | err = -ENOSYS; |
0896b752 AA |
3244 | break; |
3245 | } | |
3246 | ||
7b7232f3 | 3247 | module_put(transport->owner); |
0896b752 AA |
3248 | return err; |
3249 | } | |
3250 | ||
b5c7a12d | 3251 | /* |
cd40b7d3 DL |
3252 | * Get message from skb. Each message is processed by iscsi_if_recv_msg. |
3253 | * Malformed skbs with wrong lengths or invalid creds are not processed. | |
b5c7a12d | 3254 | */ |
0896b752 | 3255 | static void |
cd40b7d3 | 3256 | iscsi_if_rx(struct sk_buff *skb) |
0896b752 | 3257 | { |
0b950672 | 3258 | mutex_lock(&rx_queue_mutex); |
e07ebea0 | 3259 | while (skb->len >= NLMSG_HDRLEN) { |
cd40b7d3 DL |
3260 | int err; |
3261 | uint32_t rlen; | |
3262 | struct nlmsghdr *nlh; | |
3263 | struct iscsi_uevent *ev; | |
43514774 | 3264 | uint32_t group; |
cd40b7d3 DL |
3265 | |
3266 | nlh = nlmsg_hdr(skb); | |
3267 | if (nlh->nlmsg_len < sizeof(*nlh) || | |
3268 | skb->len < nlh->nlmsg_len) { | |
3269 | break; | |
ee7f8e40 | 3270 | } |
ee7f8e40 | 3271 | |
e07ebea0 | 3272 | ev = nlmsg_data(nlh); |
cd40b7d3 DL |
3273 | rlen = NLMSG_ALIGN(nlh->nlmsg_len); |
3274 | if (rlen > skb->len) | |
3275 | rlen = skb->len; | |
0896b752 | 3276 | |
43514774 | 3277 | err = iscsi_if_recv_msg(skb, nlh, &group); |
cd40b7d3 DL |
3278 | if (err) { |
3279 | ev->type = ISCSI_KEVENT_IF_ERROR; | |
3280 | ev->iferror = err; | |
0896b752 | 3281 | } |
cd40b7d3 DL |
3282 | do { |
3283 | /* | |
3284 | * special case for GET_STATS: | |
3285 | * on success - sending reply and stats from | |
3286 | * inside of if_recv_msg(), | |
3287 | * on error - fall through. | |
3288 | */ | |
3289 | if (ev->type == ISCSI_UEVENT_GET_STATS && !err) | |
3290 | break; | |
6260a5d2 NJ |
3291 | if (ev->type == ISCSI_UEVENT_GET_CHAP && !err) |
3292 | break; | |
43514774 | 3293 | err = iscsi_if_send_reply(group, nlh->nlmsg_seq, |
cd40b7d3 | 3294 | nlh->nlmsg_type, 0, 0, ev, sizeof(*ev)); |
46a7c17d | 3295 | } while (err < 0 && err != -ECONNREFUSED && err != -ESRCH); |
cd40b7d3 | 3296 | skb_pull(skb, rlen); |
0896b752 | 3297 | } |
0b950672 | 3298 | mutex_unlock(&rx_queue_mutex); |
0896b752 | 3299 | } |
1da177e4 | 3300 | |
fd7255f5 | 3301 | #define ISCSI_CLASS_ATTR(_prefix,_name,_mode,_show,_store) \ |
ee959b00 | 3302 | struct device_attribute dev_attr_##_prefix##_##_name = \ |
fd7255f5 MC |
3303 | __ATTR(_name,_mode,_show,_store) |
3304 | ||
1da177e4 | 3305 | /* |
0896b752 | 3306 | * iSCSI connection attrs |
1da177e4 | 3307 | */ |
a54a52ca | 3308 | #define iscsi_conn_attr_show(param) \ |
0896b752 | 3309 | static ssize_t \ |
ee959b00 TJ |
3310 | show_conn_param_##param(struct device *dev, \ |
3311 | struct device_attribute *attr, char *buf) \ | |
0896b752 | 3312 | { \ |
ee959b00 | 3313 | struct iscsi_cls_conn *conn = iscsi_dev_to_conn(dev->parent); \ |
7b8631b5 | 3314 | struct iscsi_transport *t = conn->transport; \ |
a54a52ca | 3315 | return t->get_conn_param(conn, param, buf); \ |
0896b752 AA |
3316 | } |
3317 | ||
a54a52ca MC |
3318 | #define iscsi_conn_attr(field, param) \ |
3319 | iscsi_conn_attr_show(param) \ | |
3320 | static ISCSI_CLASS_ATTR(conn, field, S_IRUGO, show_conn_param_##param, \ | |
fd7255f5 | 3321 | NULL); |
0896b752 | 3322 | |
a54a52ca MC |
3323 | iscsi_conn_attr(max_recv_dlength, ISCSI_PARAM_MAX_RECV_DLENGTH); |
3324 | iscsi_conn_attr(max_xmit_dlength, ISCSI_PARAM_MAX_XMIT_DLENGTH); | |
3325 | iscsi_conn_attr(header_digest, ISCSI_PARAM_HDRDGST_EN); | |
3326 | iscsi_conn_attr(data_digest, ISCSI_PARAM_DATADGST_EN); | |
3327 | iscsi_conn_attr(ifmarker, ISCSI_PARAM_IFMARKER_EN); | |
3328 | iscsi_conn_attr(ofmarker, ISCSI_PARAM_OFMARKER_EN); | |
3329 | iscsi_conn_attr(persistent_port, ISCSI_PARAM_PERSISTENT_PORT); | |
a54a52ca MC |
3330 | iscsi_conn_attr(exp_statsn, ISCSI_PARAM_EXP_STATSN); |
3331 | iscsi_conn_attr(persistent_address, ISCSI_PARAM_PERSISTENT_ADDRESS); | |
f6d5180c MC |
3332 | iscsi_conn_attr(ping_tmo, ISCSI_PARAM_PING_TMO); |
3333 | iscsi_conn_attr(recv_tmo, ISCSI_PARAM_RECV_TMO); | |
1da177e4 | 3334 | |
289324b0 MC |
3335 | #define iscsi_conn_ep_attr_show(param) \ |
3336 | static ssize_t show_conn_ep_param_##param(struct device *dev, \ | |
3337 | struct device_attribute *attr,\ | |
3338 | char *buf) \ | |
3339 | { \ | |
3340 | struct iscsi_cls_conn *conn = iscsi_dev_to_conn(dev->parent); \ | |
3341 | struct iscsi_transport *t = conn->transport; \ | |
3342 | struct iscsi_endpoint *ep; \ | |
3343 | ssize_t rc; \ | |
3344 | \ | |
3345 | /* \ | |
3346 | * Need to make sure ep_disconnect does not free the LLD's \ | |
3347 | * interconnect resources while we are trying to read them. \ | |
3348 | */ \ | |
3349 | mutex_lock(&conn->ep_mutex); \ | |
3350 | ep = conn->ep; \ | |
3351 | if (!ep && t->ep_connect) { \ | |
3352 | mutex_unlock(&conn->ep_mutex); \ | |
3353 | return -ENOTCONN; \ | |
3354 | } \ | |
3355 | \ | |
3356 | if (ep) \ | |
3357 | rc = t->get_ep_param(ep, param, buf); \ | |
3358 | else \ | |
3359 | rc = t->get_conn_param(conn, param, buf); \ | |
3360 | mutex_unlock(&conn->ep_mutex); \ | |
3361 | return rc; \ | |
3362 | } | |
3363 | ||
3364 | #define iscsi_conn_ep_attr(field, param) \ | |
3365 | iscsi_conn_ep_attr_show(param) \ | |
3366 | static ISCSI_CLASS_ATTR(conn, field, S_IRUGO, \ | |
3367 | show_conn_ep_param_##param, NULL); | |
3368 | ||
3369 | iscsi_conn_ep_attr(address, ISCSI_PARAM_CONN_ADDRESS); | |
3370 | iscsi_conn_ep_attr(port, ISCSI_PARAM_CONN_PORT); | |
3371 | ||
3128c6c7 MC |
3372 | static struct attribute *iscsi_conn_attrs[] = { |
3373 | &dev_attr_conn_max_recv_dlength.attr, | |
3374 | &dev_attr_conn_max_xmit_dlength.attr, | |
3375 | &dev_attr_conn_header_digest.attr, | |
3376 | &dev_attr_conn_data_digest.attr, | |
3377 | &dev_attr_conn_ifmarker.attr, | |
3378 | &dev_attr_conn_ofmarker.attr, | |
3379 | &dev_attr_conn_address.attr, | |
3380 | &dev_attr_conn_port.attr, | |
3381 | &dev_attr_conn_exp_statsn.attr, | |
3382 | &dev_attr_conn_persistent_address.attr, | |
3383 | &dev_attr_conn_persistent_port.attr, | |
3384 | &dev_attr_conn_ping_tmo.attr, | |
3385 | &dev_attr_conn_recv_tmo.attr, | |
3386 | NULL, | |
3387 | }; | |
3388 | ||
587a1f16 | 3389 | static umode_t iscsi_conn_attr_is_visible(struct kobject *kobj, |
3128c6c7 MC |
3390 | struct attribute *attr, int i) |
3391 | { | |
3392 | struct device *cdev = container_of(kobj, struct device, kobj); | |
3393 | struct iscsi_cls_conn *conn = transport_class_to_conn(cdev); | |
3394 | struct iscsi_transport *t = conn->transport; | |
3395 | int param; | |
3396 | ||
3397 | if (attr == &dev_attr_conn_max_recv_dlength.attr) | |
3398 | param = ISCSI_PARAM_MAX_RECV_DLENGTH; | |
3399 | else if (attr == &dev_attr_conn_max_xmit_dlength.attr) | |
3400 | param = ISCSI_PARAM_MAX_XMIT_DLENGTH; | |
3401 | else if (attr == &dev_attr_conn_header_digest.attr) | |
3402 | param = ISCSI_PARAM_HDRDGST_EN; | |
3403 | else if (attr == &dev_attr_conn_data_digest.attr) | |
3404 | param = ISCSI_PARAM_DATADGST_EN; | |
3405 | else if (attr == &dev_attr_conn_ifmarker.attr) | |
3406 | param = ISCSI_PARAM_IFMARKER_EN; | |
3407 | else if (attr == &dev_attr_conn_ofmarker.attr) | |
3408 | param = ISCSI_PARAM_OFMARKER_EN; | |
3409 | else if (attr == &dev_attr_conn_address.attr) | |
3410 | param = ISCSI_PARAM_CONN_ADDRESS; | |
3411 | else if (attr == &dev_attr_conn_port.attr) | |
3412 | param = ISCSI_PARAM_CONN_PORT; | |
3413 | else if (attr == &dev_attr_conn_exp_statsn.attr) | |
3414 | param = ISCSI_PARAM_EXP_STATSN; | |
3415 | else if (attr == &dev_attr_conn_persistent_address.attr) | |
3416 | param = ISCSI_PARAM_PERSISTENT_ADDRESS; | |
3417 | else if (attr == &dev_attr_conn_persistent_port.attr) | |
3418 | param = ISCSI_PARAM_PERSISTENT_PORT; | |
3419 | else if (attr == &dev_attr_conn_ping_tmo.attr) | |
3420 | param = ISCSI_PARAM_PING_TMO; | |
3421 | else if (attr == &dev_attr_conn_recv_tmo.attr) | |
3422 | param = ISCSI_PARAM_RECV_TMO; | |
3423 | else { | |
3424 | WARN_ONCE(1, "Invalid conn attr"); | |
3425 | return 0; | |
3426 | } | |
3427 | ||
3428 | return t->attr_is_visible(ISCSI_PARAM, param); | |
3429 | } | |
3430 | ||
3431 | static struct attribute_group iscsi_conn_group = { | |
3432 | .attrs = iscsi_conn_attrs, | |
3433 | .is_visible = iscsi_conn_attr_is_visible, | |
3434 | }; | |
3435 | ||
1da177e4 | 3436 | /* |
0896b752 | 3437 | * iSCSI session attrs |
1da177e4 | 3438 | */ |
b2c64167 | 3439 | #define iscsi_session_attr_show(param, perm) \ |
fd7255f5 | 3440 | static ssize_t \ |
ee959b00 TJ |
3441 | show_session_param_##param(struct device *dev, \ |
3442 | struct device_attribute *attr, char *buf) \ | |
fd7255f5 | 3443 | { \ |
ee959b00 TJ |
3444 | struct iscsi_cls_session *session = \ |
3445 | iscsi_dev_to_session(dev->parent); \ | |
fd7255f5 | 3446 | struct iscsi_transport *t = session->transport; \ |
b2c64167 MC |
3447 | \ |
3448 | if (perm && !capable(CAP_SYS_ADMIN)) \ | |
3449 | return -EACCES; \ | |
a54a52ca | 3450 | return t->get_session_param(session, param, buf); \ |
fd7255f5 MC |
3451 | } |
3452 | ||
b2c64167 MC |
3453 | #define iscsi_session_attr(field, param, perm) \ |
3454 | iscsi_session_attr_show(param, perm) \ | |
a54a52ca | 3455 | static ISCSI_CLASS_ATTR(sess, field, S_IRUGO, show_session_param_##param, \ |
fd7255f5 | 3456 | NULL); |
b2c64167 MC |
3457 | iscsi_session_attr(targetname, ISCSI_PARAM_TARGET_NAME, 0); |
3458 | iscsi_session_attr(initial_r2t, ISCSI_PARAM_INITIAL_R2T_EN, 0); | |
3459 | iscsi_session_attr(max_outstanding_r2t, ISCSI_PARAM_MAX_R2T, 0); | |
3460 | iscsi_session_attr(immediate_data, ISCSI_PARAM_IMM_DATA_EN, 0); | |
3461 | iscsi_session_attr(first_burst_len, ISCSI_PARAM_FIRST_BURST, 0); | |
3462 | iscsi_session_attr(max_burst_len, ISCSI_PARAM_MAX_BURST, 0); | |
3463 | iscsi_session_attr(data_pdu_in_order, ISCSI_PARAM_PDU_INORDER_EN, 0); | |
3464 | iscsi_session_attr(data_seq_in_order, ISCSI_PARAM_DATASEQ_INORDER_EN, 0); | |
3465 | iscsi_session_attr(erl, ISCSI_PARAM_ERL, 0); | |
3466 | iscsi_session_attr(tpgt, ISCSI_PARAM_TPGT, 0); | |
3467 | iscsi_session_attr(username, ISCSI_PARAM_USERNAME, 1); | |
3468 | iscsi_session_attr(username_in, ISCSI_PARAM_USERNAME_IN, 1); | |
3469 | iscsi_session_attr(password, ISCSI_PARAM_PASSWORD, 1); | |
3470 | iscsi_session_attr(password_in, ISCSI_PARAM_PASSWORD_IN, 1); | |
30534952 MC |
3471 | iscsi_session_attr(chap_out_idx, ISCSI_PARAM_CHAP_OUT_IDX, 1); |
3472 | iscsi_session_attr(chap_in_idx, ISCSI_PARAM_CHAP_IN_IDX, 1); | |
4cd49ea1 MC |
3473 | iscsi_session_attr(fast_abort, ISCSI_PARAM_FAST_ABORT, 0); |
3474 | iscsi_session_attr(abort_tmo, ISCSI_PARAM_ABORT_TMO, 0); | |
3475 | iscsi_session_attr(lu_reset_tmo, ISCSI_PARAM_LU_RESET_TMO, 0); | |
3fe5ae8b | 3476 | iscsi_session_attr(tgt_reset_tmo, ISCSI_PARAM_TGT_RESET_TMO, 0); |
88dfd340 | 3477 | iscsi_session_attr(ifacename, ISCSI_PARAM_IFACE_NAME, 0); |
3b2bef1f VC |
3478 | iscsi_session_attr(initiatorname, ISCSI_PARAM_INITIATOR_NAME, 0); |
3479 | iscsi_session_attr(targetalias, ISCSI_PARAM_TARGET_ALIAS, 0); | |
1da177e4 | 3480 | |
6eabafbe | 3481 | static ssize_t |
ee959b00 TJ |
3482 | show_priv_session_state(struct device *dev, struct device_attribute *attr, |
3483 | char *buf) | |
6eabafbe | 3484 | { |
ee959b00 | 3485 | struct iscsi_cls_session *session = iscsi_dev_to_session(dev->parent); |
6eabafbe MC |
3486 | return sprintf(buf, "%s\n", iscsi_session_state_name(session->state)); |
3487 | } | |
3488 | static ISCSI_CLASS_ATTR(priv_sess, state, S_IRUGO, show_priv_session_state, | |
3489 | NULL); | |
0c70d84b MC |
3490 | static ssize_t |
3491 | show_priv_session_creator(struct device *dev, struct device_attribute *attr, | |
3492 | char *buf) | |
3493 | { | |
3494 | struct iscsi_cls_session *session = iscsi_dev_to_session(dev->parent); | |
3495 | return sprintf(buf, "%d\n", session->creator); | |
3496 | } | |
3497 | static ISCSI_CLASS_ATTR(priv_sess, creator, S_IRUGO, show_priv_session_creator, | |
3498 | NULL); | |
930a9f04 MR |
3499 | static ssize_t |
3500 | show_priv_session_target_id(struct device *dev, struct device_attribute *attr, | |
3501 | char *buf) | |
3502 | { | |
3503 | struct iscsi_cls_session *session = iscsi_dev_to_session(dev->parent); | |
3504 | return sprintf(buf, "%d\n", session->target_id); | |
3505 | } | |
3506 | static ISCSI_CLASS_ATTR(priv_sess, target_id, S_IRUGO, | |
3507 | show_priv_session_target_id, NULL); | |
6eabafbe | 3508 | |
fd7255f5 MC |
3509 | #define iscsi_priv_session_attr_show(field, format) \ |
3510 | static ssize_t \ | |
ee959b00 TJ |
3511 | show_priv_session_##field(struct device *dev, \ |
3512 | struct device_attribute *attr, char *buf) \ | |
fd7255f5 | 3513 | { \ |
ee959b00 TJ |
3514 | struct iscsi_cls_session *session = \ |
3515 | iscsi_dev_to_session(dev->parent); \ | |
fe4f0bde VC |
3516 | if (session->field == -1) \ |
3517 | return sprintf(buf, "off\n"); \ | |
fd7255f5 MC |
3518 | return sprintf(buf, format"\n", session->field); \ |
3519 | } | |
3520 | ||
fe4f0bde VC |
3521 | #define iscsi_priv_session_attr_store(field) \ |
3522 | static ssize_t \ | |
3523 | store_priv_session_##field(struct device *dev, \ | |
3524 | struct device_attribute *attr, \ | |
3525 | const char *buf, size_t count) \ | |
3526 | { \ | |
3527 | int val; \ | |
3528 | char *cp; \ | |
3529 | struct iscsi_cls_session *session = \ | |
3530 | iscsi_dev_to_session(dev->parent); \ | |
3531 | if ((session->state == ISCSI_SESSION_FREE) || \ | |
3532 | (session->state == ISCSI_SESSION_FAILED)) \ | |
3533 | return -EBUSY; \ | |
3534 | if (strncmp(buf, "off", 3) == 0) \ | |
3535 | session->field = -1; \ | |
3536 | else { \ | |
3537 | val = simple_strtoul(buf, &cp, 0); \ | |
3538 | if (*cp != '\0' && *cp != '\n') \ | |
3539 | return -EINVAL; \ | |
3540 | session->field = val; \ | |
3541 | } \ | |
3542 | return count; \ | |
3543 | } | |
3544 | ||
3545 | #define iscsi_priv_session_rw_attr(field, format) \ | |
fd7255f5 | 3546 | iscsi_priv_session_attr_show(field, format) \ |
fe4f0bde | 3547 | iscsi_priv_session_attr_store(field) \ |
523f3c80 | 3548 | static ISCSI_CLASS_ATTR(priv_sess, field, S_IRUGO | S_IWUSR, \ |
fe4f0bde VC |
3549 | show_priv_session_##field, \ |
3550 | store_priv_session_##field) | |
3551 | iscsi_priv_session_rw_attr(recovery_tmo, "%d"); | |
fd7255f5 | 3552 | |
1d063c17 MC |
3553 | static struct attribute *iscsi_session_attrs[] = { |
3554 | &dev_attr_sess_initial_r2t.attr, | |
3555 | &dev_attr_sess_max_outstanding_r2t.attr, | |
3556 | &dev_attr_sess_immediate_data.attr, | |
3557 | &dev_attr_sess_first_burst_len.attr, | |
3558 | &dev_attr_sess_max_burst_len.attr, | |
3559 | &dev_attr_sess_data_pdu_in_order.attr, | |
3560 | &dev_attr_sess_data_seq_in_order.attr, | |
3561 | &dev_attr_sess_erl.attr, | |
3562 | &dev_attr_sess_targetname.attr, | |
3563 | &dev_attr_sess_tpgt.attr, | |
3564 | &dev_attr_sess_password.attr, | |
3565 | &dev_attr_sess_password_in.attr, | |
3566 | &dev_attr_sess_username.attr, | |
3567 | &dev_attr_sess_username_in.attr, | |
3568 | &dev_attr_sess_fast_abort.attr, | |
3569 | &dev_attr_sess_abort_tmo.attr, | |
3570 | &dev_attr_sess_lu_reset_tmo.attr, | |
3571 | &dev_attr_sess_tgt_reset_tmo.attr, | |
3572 | &dev_attr_sess_ifacename.attr, | |
3573 | &dev_attr_sess_initiatorname.attr, | |
3574 | &dev_attr_sess_targetalias.attr, | |
3575 | &dev_attr_priv_sess_recovery_tmo.attr, | |
3576 | &dev_attr_priv_sess_state.attr, | |
0c70d84b | 3577 | &dev_attr_priv_sess_creator.attr, |
30534952 MC |
3578 | &dev_attr_sess_chap_out_idx.attr, |
3579 | &dev_attr_sess_chap_in_idx.attr, | |
930a9f04 | 3580 | &dev_attr_priv_sess_target_id.attr, |
1d063c17 MC |
3581 | NULL, |
3582 | }; | |
3583 | ||
587a1f16 | 3584 | static umode_t iscsi_session_attr_is_visible(struct kobject *kobj, |
1d063c17 MC |
3585 | struct attribute *attr, int i) |
3586 | { | |
3587 | struct device *cdev = container_of(kobj, struct device, kobj); | |
3588 | struct iscsi_cls_session *session = transport_class_to_session(cdev); | |
3589 | struct iscsi_transport *t = session->transport; | |
3590 | int param; | |
3591 | ||
3592 | if (attr == &dev_attr_sess_initial_r2t.attr) | |
3593 | param = ISCSI_PARAM_INITIAL_R2T_EN; | |
3594 | else if (attr == &dev_attr_sess_max_outstanding_r2t.attr) | |
3595 | param = ISCSI_PARAM_MAX_R2T; | |
3596 | else if (attr == &dev_attr_sess_immediate_data.attr) | |
3597 | param = ISCSI_PARAM_IMM_DATA_EN; | |
3598 | else if (attr == &dev_attr_sess_first_burst_len.attr) | |
3599 | param = ISCSI_PARAM_FIRST_BURST; | |
3600 | else if (attr == &dev_attr_sess_max_burst_len.attr) | |
3601 | param = ISCSI_PARAM_MAX_BURST; | |
3602 | else if (attr == &dev_attr_sess_data_pdu_in_order.attr) | |
3603 | param = ISCSI_PARAM_PDU_INORDER_EN; | |
3604 | else if (attr == &dev_attr_sess_data_seq_in_order.attr) | |
3605 | param = ISCSI_PARAM_DATASEQ_INORDER_EN; | |
3606 | else if (attr == &dev_attr_sess_erl.attr) | |
3607 | param = ISCSI_PARAM_ERL; | |
3608 | else if (attr == &dev_attr_sess_targetname.attr) | |
3609 | param = ISCSI_PARAM_TARGET_NAME; | |
3610 | else if (attr == &dev_attr_sess_tpgt.attr) | |
3611 | param = ISCSI_PARAM_TPGT; | |
30534952 MC |
3612 | else if (attr == &dev_attr_sess_chap_in_idx.attr) |
3613 | param = ISCSI_PARAM_CHAP_IN_IDX; | |
3614 | else if (attr == &dev_attr_sess_chap_out_idx.attr) | |
3615 | param = ISCSI_PARAM_CHAP_OUT_IDX; | |
1d063c17 MC |
3616 | else if (attr == &dev_attr_sess_password.attr) |
3617 | param = ISCSI_PARAM_USERNAME; | |
3618 | else if (attr == &dev_attr_sess_password_in.attr) | |
3619 | param = ISCSI_PARAM_USERNAME_IN; | |
3620 | else if (attr == &dev_attr_sess_username.attr) | |
3621 | param = ISCSI_PARAM_PASSWORD; | |
3622 | else if (attr == &dev_attr_sess_username_in.attr) | |
3623 | param = ISCSI_PARAM_PASSWORD_IN; | |
3624 | else if (attr == &dev_attr_sess_fast_abort.attr) | |
3625 | param = ISCSI_PARAM_FAST_ABORT; | |
3626 | else if (attr == &dev_attr_sess_abort_tmo.attr) | |
3627 | param = ISCSI_PARAM_ABORT_TMO; | |
3628 | else if (attr == &dev_attr_sess_lu_reset_tmo.attr) | |
3629 | param = ISCSI_PARAM_LU_RESET_TMO; | |
3630 | else if (attr == &dev_attr_sess_tgt_reset_tmo.attr) | |
3631 | param = ISCSI_PARAM_TGT_RESET_TMO; | |
3632 | else if (attr == &dev_attr_sess_ifacename.attr) | |
3633 | param = ISCSI_PARAM_IFACE_NAME; | |
3634 | else if (attr == &dev_attr_sess_initiatorname.attr) | |
3635 | param = ISCSI_PARAM_INITIATOR_NAME; | |
3636 | else if (attr == &dev_attr_sess_targetalias.attr) | |
3637 | param = ISCSI_PARAM_TARGET_ALIAS; | |
3638 | else if (attr == &dev_attr_priv_sess_recovery_tmo.attr) | |
3639 | return S_IRUGO | S_IWUSR; | |
3640 | else if (attr == &dev_attr_priv_sess_state.attr) | |
3641 | return S_IRUGO; | |
0c70d84b MC |
3642 | else if (attr == &dev_attr_priv_sess_creator.attr) |
3643 | return S_IRUGO; | |
930a9f04 MR |
3644 | else if (attr == &dev_attr_priv_sess_target_id.attr) |
3645 | return S_IRUGO; | |
1d063c17 MC |
3646 | else { |
3647 | WARN_ONCE(1, "Invalid session attr"); | |
3648 | return 0; | |
3649 | } | |
3650 | ||
3651 | return t->attr_is_visible(ISCSI_PARAM, param); | |
3652 | } | |
3653 | ||
3654 | static struct attribute_group iscsi_session_group = { | |
3655 | .attrs = iscsi_session_attrs, | |
3656 | .is_visible = iscsi_session_attr_is_visible, | |
3657 | }; | |
3658 | ||
1819dc81 MC |
3659 | /* |
3660 | * iSCSI host attrs | |
3661 | */ | |
3662 | #define iscsi_host_attr_show(param) \ | |
3663 | static ssize_t \ | |
ee959b00 TJ |
3664 | show_host_param_##param(struct device *dev, \ |
3665 | struct device_attribute *attr, char *buf) \ | |
1819dc81 | 3666 | { \ |
ee959b00 | 3667 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1819dc81 MC |
3668 | struct iscsi_internal *priv = to_iscsi_internal(shost->transportt); \ |
3669 | return priv->iscsi_transport->get_host_param(shost, param, buf); \ | |
3670 | } | |
3671 | ||
3672 | #define iscsi_host_attr(field, param) \ | |
3673 | iscsi_host_attr_show(param) \ | |
3674 | static ISCSI_CLASS_ATTR(host, field, S_IRUGO, show_host_param_##param, \ | |
3675 | NULL); | |
3676 | ||
d8196ed2 | 3677 | iscsi_host_attr(netdev, ISCSI_HOST_PARAM_NETDEV_NAME); |
1819dc81 | 3678 | iscsi_host_attr(hwaddress, ISCSI_HOST_PARAM_HWADDRESS); |
d8196ed2 | 3679 | iscsi_host_attr(ipaddress, ISCSI_HOST_PARAM_IPADDRESS); |
8ad5781a | 3680 | iscsi_host_attr(initiatorname, ISCSI_HOST_PARAM_INITIATOR_NAME); |
aeddde29 VC |
3681 | iscsi_host_attr(port_state, ISCSI_HOST_PARAM_PORT_STATE); |
3682 | iscsi_host_attr(port_speed, ISCSI_HOST_PARAM_PORT_SPEED); | |
1819dc81 | 3683 | |
f27fb2ef MC |
3684 | static struct attribute *iscsi_host_attrs[] = { |
3685 | &dev_attr_host_netdev.attr, | |
3686 | &dev_attr_host_hwaddress.attr, | |
3687 | &dev_attr_host_ipaddress.attr, | |
3688 | &dev_attr_host_initiatorname.attr, | |
aeddde29 VC |
3689 | &dev_attr_host_port_state.attr, |
3690 | &dev_attr_host_port_speed.attr, | |
f27fb2ef MC |
3691 | NULL, |
3692 | }; | |
3693 | ||
587a1f16 | 3694 | static umode_t iscsi_host_attr_is_visible(struct kobject *kobj, |
f27fb2ef MC |
3695 | struct attribute *attr, int i) |
3696 | { | |
3697 | struct device *cdev = container_of(kobj, struct device, kobj); | |
3698 | struct Scsi_Host *shost = transport_class_to_shost(cdev); | |
3699 | struct iscsi_internal *priv = to_iscsi_internal(shost->transportt); | |
3700 | int param; | |
3701 | ||
3702 | if (attr == &dev_attr_host_netdev.attr) | |
3703 | param = ISCSI_HOST_PARAM_NETDEV_NAME; | |
3704 | else if (attr == &dev_attr_host_hwaddress.attr) | |
3705 | param = ISCSI_HOST_PARAM_HWADDRESS; | |
3706 | else if (attr == &dev_attr_host_ipaddress.attr) | |
3707 | param = ISCSI_HOST_PARAM_IPADDRESS; | |
3708 | else if (attr == &dev_attr_host_initiatorname.attr) | |
3709 | param = ISCSI_HOST_PARAM_INITIATOR_NAME; | |
aeddde29 VC |
3710 | else if (attr == &dev_attr_host_port_state.attr) |
3711 | param = ISCSI_HOST_PARAM_PORT_STATE; | |
3712 | else if (attr == &dev_attr_host_port_speed.attr) | |
3713 | param = ISCSI_HOST_PARAM_PORT_SPEED; | |
f27fb2ef MC |
3714 | else { |
3715 | WARN_ONCE(1, "Invalid host attr"); | |
3716 | return 0; | |
3717 | } | |
3718 | ||
3719 | return priv->iscsi_transport->attr_is_visible(ISCSI_HOST_PARAM, param); | |
3720 | } | |
3721 | ||
3722 | static struct attribute_group iscsi_host_group = { | |
3723 | .attrs = iscsi_host_attrs, | |
3724 | .is_visible = iscsi_host_attr_is_visible, | |
3725 | }; | |
1819dc81 | 3726 | |
aeddde29 VC |
3727 | /* convert iscsi_port_speed values to ascii string name */ |
3728 | static const struct { | |
3729 | enum iscsi_port_speed value; | |
3730 | char *name; | |
3731 | } iscsi_port_speed_names[] = { | |
3732 | {ISCSI_PORT_SPEED_UNKNOWN, "Unknown" }, | |
3733 | {ISCSI_PORT_SPEED_10MBPS, "10 Mbps" }, | |
3734 | {ISCSI_PORT_SPEED_100MBPS, "100 Mbps" }, | |
3735 | {ISCSI_PORT_SPEED_1GBPS, "1 Gbps" }, | |
3736 | {ISCSI_PORT_SPEED_10GBPS, "10 Gbps" }, | |
3737 | }; | |
3738 | ||
3739 | char *iscsi_get_port_speed_name(struct Scsi_Host *shost) | |
3740 | { | |
3741 | int i; | |
3742 | char *speed = "Unknown!"; | |
3743 | struct iscsi_cls_host *ihost = shost->shost_data; | |
3744 | uint32_t port_speed = ihost->port_speed; | |
3745 | ||
3746 | for (i = 0; i < ARRAY_SIZE(iscsi_port_speed_names); i++) { | |
3747 | if (iscsi_port_speed_names[i].value & port_speed) { | |
3748 | speed = iscsi_port_speed_names[i].name; | |
3749 | break; | |
3750 | } | |
3751 | } | |
3752 | return speed; | |
3753 | } | |
3754 | EXPORT_SYMBOL_GPL(iscsi_get_port_speed_name); | |
3755 | ||
3756 | /* convert iscsi_port_state values to ascii string name */ | |
3757 | static const struct { | |
3758 | enum iscsi_port_state value; | |
3759 | char *name; | |
3760 | } iscsi_port_state_names[] = { | |
3761 | {ISCSI_PORT_STATE_DOWN, "LINK DOWN" }, | |
3762 | {ISCSI_PORT_STATE_UP, "LINK UP" }, | |
3763 | }; | |
3764 | ||
3765 | char *iscsi_get_port_state_name(struct Scsi_Host *shost) | |
3766 | { | |
3767 | int i; | |
3768 | char *state = "Unknown!"; | |
3769 | struct iscsi_cls_host *ihost = shost->shost_data; | |
3770 | uint32_t port_state = ihost->port_state; | |
3771 | ||
3772 | for (i = 0; i < ARRAY_SIZE(iscsi_port_state_names); i++) { | |
3773 | if (iscsi_port_state_names[i].value & port_state) { | |
3774 | state = iscsi_port_state_names[i].name; | |
3775 | break; | |
3776 | } | |
3777 | } | |
3778 | return state; | |
3779 | } | |
3780 | EXPORT_SYMBOL_GPL(iscsi_get_port_state_name); | |
3781 | ||
0896b752 AA |
3782 | static int iscsi_session_match(struct attribute_container *cont, |
3783 | struct device *dev) | |
1da177e4 | 3784 | { |
7b8631b5 | 3785 | struct iscsi_cls_session *session; |
1da177e4 | 3786 | struct Scsi_Host *shost; |
0896b752 AA |
3787 | struct iscsi_internal *priv; |
3788 | ||
3789 | if (!iscsi_is_session_dev(dev)) | |
3790 | return 0; | |
1da177e4 | 3791 | |
7b8631b5 MC |
3792 | session = iscsi_dev_to_session(dev); |
3793 | shost = iscsi_session_to_shost(session); | |
0896b752 | 3794 | if (!shost->transportt) |
1da177e4 LT |
3795 | return 0; |
3796 | ||
0896b752 AA |
3797 | priv = to_iscsi_internal(shost->transportt); |
3798 | if (priv->session_cont.ac.class != &iscsi_session_class.class) | |
1da177e4 LT |
3799 | return 0; |
3800 | ||
0896b752 | 3801 | return &priv->session_cont.ac == cont; |
1da177e4 LT |
3802 | } |
3803 | ||
0896b752 AA |
3804 | static int iscsi_conn_match(struct attribute_container *cont, |
3805 | struct device *dev) | |
3806 | { | |
7b8631b5 MC |
3807 | struct iscsi_cls_session *session; |
3808 | struct iscsi_cls_conn *conn; | |
1da177e4 | 3809 | struct Scsi_Host *shost; |
0896b752 | 3810 | struct iscsi_internal *priv; |
1da177e4 | 3811 | |
0896b752 | 3812 | if (!iscsi_is_conn_dev(dev)) |
1da177e4 LT |
3813 | return 0; |
3814 | ||
7b8631b5 MC |
3815 | conn = iscsi_dev_to_conn(dev); |
3816 | session = iscsi_dev_to_session(conn->dev.parent); | |
3817 | shost = iscsi_session_to_shost(session); | |
3818 | ||
0896b752 | 3819 | if (!shost->transportt) |
1da177e4 LT |
3820 | return 0; |
3821 | ||
0896b752 AA |
3822 | priv = to_iscsi_internal(shost->transportt); |
3823 | if (priv->conn_cont.ac.class != &iscsi_connection_class.class) | |
3824 | return 0; | |
1da177e4 | 3825 | |
0896b752 AA |
3826 | return &priv->conn_cont.ac == cont; |
3827 | } | |
3828 | ||
30a6c652 MC |
3829 | static int iscsi_host_match(struct attribute_container *cont, |
3830 | struct device *dev) | |
3831 | { | |
3832 | struct Scsi_Host *shost; | |
3833 | struct iscsi_internal *priv; | |
3834 | ||
3835 | if (!scsi_is_host_device(dev)) | |
3836 | return 0; | |
3837 | ||
3838 | shost = dev_to_shost(dev); | |
3839 | if (!shost->transportt || | |
3840 | shost->transportt->host_attrs.ac.class != &iscsi_host_class.class) | |
3841 | return 0; | |
3842 | ||
3843 | priv = to_iscsi_internal(shost->transportt); | |
3844 | return &priv->t.host_attrs.ac == cont; | |
3845 | } | |
3846 | ||
7b8631b5 MC |
3847 | struct scsi_transport_template * |
3848 | iscsi_register_transport(struct iscsi_transport *tt) | |
0896b752 AA |
3849 | { |
3850 | struct iscsi_internal *priv; | |
3851 | unsigned long flags; | |
f27fb2ef | 3852 | int err; |
0896b752 AA |
3853 | |
3854 | BUG_ON(!tt); | |
3855 | ||
3856 | priv = iscsi_if_transport_lookup(tt); | |
3857 | if (priv) | |
7b8631b5 | 3858 | return NULL; |
0896b752 | 3859 | |
24669f75 | 3860 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); |
0896b752 | 3861 | if (!priv) |
7b8631b5 | 3862 | return NULL; |
0896b752 | 3863 | INIT_LIST_HEAD(&priv->list); |
0896b752 | 3864 | priv->iscsi_transport = tt; |
30a6c652 | 3865 | priv->t.user_scan = iscsi_user_scan; |
06d25af4 | 3866 | priv->t.create_work_queue = 1; |
0896b752 | 3867 | |
ee959b00 | 3868 | priv->dev.class = &iscsi_transport_class; |
71610f55 | 3869 | dev_set_name(&priv->dev, "%s", tt->name); |
ee959b00 | 3870 | err = device_register(&priv->dev); |
0896b752 AA |
3871 | if (err) |
3872 | goto free_priv; | |
3873 | ||
ee959b00 | 3874 | err = sysfs_create_group(&priv->dev.kobj, &iscsi_transport_group); |
0896b752 | 3875 | if (err) |
ee959b00 | 3876 | goto unregister_dev; |
0896b752 | 3877 | |
30a6c652 | 3878 | /* host parameters */ |
30a6c652 MC |
3879 | priv->t.host_attrs.ac.class = &iscsi_host_class.class; |
3880 | priv->t.host_attrs.ac.match = iscsi_host_match; | |
f27fb2ef | 3881 | priv->t.host_attrs.ac.grp = &iscsi_host_group; |
32c6e1b9 | 3882 | priv->t.host_size = sizeof(struct iscsi_cls_host); |
30a6c652 MC |
3883 | transport_container_register(&priv->t.host_attrs); |
3884 | ||
0896b752 | 3885 | /* connection parameters */ |
0896b752 AA |
3886 | priv->conn_cont.ac.class = &iscsi_connection_class.class; |
3887 | priv->conn_cont.ac.match = iscsi_conn_match; | |
3128c6c7 | 3888 | priv->conn_cont.ac.grp = &iscsi_conn_group; |
0896b752 | 3889 | transport_container_register(&priv->conn_cont); |
1da177e4 | 3890 | |
0896b752 | 3891 | /* session parameters */ |
0896b752 AA |
3892 | priv->session_cont.ac.class = &iscsi_session_class.class; |
3893 | priv->session_cont.ac.match = iscsi_session_match; | |
1d063c17 | 3894 | priv->session_cont.ac.grp = &iscsi_session_group; |
0896b752 AA |
3895 | transport_container_register(&priv->session_cont); |
3896 | ||
0896b752 AA |
3897 | spin_lock_irqsave(&iscsi_transport_lock, flags); |
3898 | list_add(&priv->list, &iscsi_transports); | |
3899 | spin_unlock_irqrestore(&iscsi_transport_lock, flags); | |
3900 | ||
3901 | printk(KERN_NOTICE "iscsi: registered transport (%s)\n", tt->name); | |
7b8631b5 | 3902 | return &priv->t; |
1da177e4 | 3903 | |
ee959b00 TJ |
3904 | unregister_dev: |
3905 | device_unregister(&priv->dev); | |
d82ff9be | 3906 | return NULL; |
0896b752 AA |
3907 | free_priv: |
3908 | kfree(priv); | |
7b8631b5 | 3909 | return NULL; |
1da177e4 | 3910 | } |
0896b752 AA |
3911 | EXPORT_SYMBOL_GPL(iscsi_register_transport); |
3912 | ||
3913 | int iscsi_unregister_transport(struct iscsi_transport *tt) | |
3914 | { | |
3915 | struct iscsi_internal *priv; | |
3916 | unsigned long flags; | |
3917 | ||
3918 | BUG_ON(!tt); | |
3919 | ||
0b950672 | 3920 | mutex_lock(&rx_queue_mutex); |
0896b752 AA |
3921 | |
3922 | priv = iscsi_if_transport_lookup(tt); | |
3923 | BUG_ON (!priv); | |
3924 | ||
0896b752 AA |
3925 | spin_lock_irqsave(&iscsi_transport_lock, flags); |
3926 | list_del(&priv->list); | |
3927 | spin_unlock_irqrestore(&iscsi_transport_lock, flags); | |
3928 | ||
3929 | transport_container_unregister(&priv->conn_cont); | |
3930 | transport_container_unregister(&priv->session_cont); | |
30a6c652 | 3931 | transport_container_unregister(&priv->t.host_attrs); |
0896b752 | 3932 | |
ee959b00 TJ |
3933 | sysfs_remove_group(&priv->dev.kobj, &iscsi_transport_group); |
3934 | device_unregister(&priv->dev); | |
0b950672 | 3935 | mutex_unlock(&rx_queue_mutex); |
1da177e4 | 3936 | |
0896b752 AA |
3937 | return 0; |
3938 | } | |
3939 | EXPORT_SYMBOL_GPL(iscsi_unregister_transport); | |
1da177e4 | 3940 | |
1da177e4 LT |
3941 | static __init int iscsi_transport_init(void) |
3942 | { | |
0896b752 | 3943 | int err; |
a31f2d17 PNA |
3944 | struct netlink_kernel_cfg cfg = { |
3945 | .groups = 1, | |
3946 | .input = iscsi_if_rx, | |
3947 | }; | |
09492605 | 3948 | printk(KERN_INFO "Loading iSCSI transport class v%s.\n", |
f4246b33 MC |
3949 | ISCSI_TRANSPORT_VERSION); |
3950 | ||
41be1444 MC |
3951 | atomic_set(&iscsi_session_nr, 0); |
3952 | ||
0896b752 | 3953 | err = class_register(&iscsi_transport_class); |
1da177e4 LT |
3954 | if (err) |
3955 | return err; | |
0896b752 | 3956 | |
d82ff9be | 3957 | err = class_register(&iscsi_endpoint_class); |
0896b752 AA |
3958 | if (err) |
3959 | goto unregister_transport_class; | |
3960 | ||
8d07913d | 3961 | err = class_register(&iscsi_iface_class); |
d82ff9be MC |
3962 | if (err) |
3963 | goto unregister_endpoint_class; | |
3964 | ||
8d07913d MC |
3965 | err = transport_class_register(&iscsi_host_class); |
3966 | if (err) | |
3967 | goto unregister_iface_class; | |
3968 | ||
30a6c652 MC |
3969 | err = transport_class_register(&iscsi_connection_class); |
3970 | if (err) | |
3971 | goto unregister_host_class; | |
3972 | ||
0896b752 AA |
3973 | err = transport_class_register(&iscsi_session_class); |
3974 | if (err) | |
3975 | goto unregister_conn_class; | |
3976 | ||
c6a4bb2e AC |
3977 | err = bus_register(&iscsi_flashnode_bus); |
3978 | if (err) | |
3979 | goto unregister_session_class; | |
3980 | ||
9f00d977 | 3981 | nls = netlink_kernel_create(&init_net, NETLINK_ISCSI, &cfg); |
0896b752 AA |
3982 | if (!nls) { |
3983 | err = -ENOBUFS; | |
c6a4bb2e | 3984 | goto unregister_flashnode_bus; |
0896b752 AA |
3985 | } |
3986 | ||
d8bf541e | 3987 | iscsi_eh_timer_workq = create_singlethread_workqueue("iscsi_eh"); |
bcab2ccd WY |
3988 | if (!iscsi_eh_timer_workq) { |
3989 | err = -ENOMEM; | |
d8bf541e | 3990 | goto release_nls; |
bcab2ccd | 3991 | } |
d8bf541e | 3992 | |
43a145a3 | 3993 | return 0; |
0896b752 | 3994 | |
d8bf541e | 3995 | release_nls: |
b7c6ba6e | 3996 | netlink_kernel_release(nls); |
c6a4bb2e AC |
3997 | unregister_flashnode_bus: |
3998 | bus_unregister(&iscsi_flashnode_bus); | |
0896b752 AA |
3999 | unregister_session_class: |
4000 | transport_class_unregister(&iscsi_session_class); | |
4001 | unregister_conn_class: | |
4002 | transport_class_unregister(&iscsi_connection_class); | |
30a6c652 MC |
4003 | unregister_host_class: |
4004 | transport_class_unregister(&iscsi_host_class); | |
8d07913d MC |
4005 | unregister_iface_class: |
4006 | class_unregister(&iscsi_iface_class); | |
d82ff9be MC |
4007 | unregister_endpoint_class: |
4008 | class_unregister(&iscsi_endpoint_class); | |
0896b752 AA |
4009 | unregister_transport_class: |
4010 | class_unregister(&iscsi_transport_class); | |
4011 | return err; | |
1da177e4 LT |
4012 | } |
4013 | ||
4014 | static void __exit iscsi_transport_exit(void) | |
4015 | { | |
d8bf541e | 4016 | destroy_workqueue(iscsi_eh_timer_workq); |
b7c6ba6e | 4017 | netlink_kernel_release(nls); |
c6a4bb2e | 4018 | bus_unregister(&iscsi_flashnode_bus); |
0896b752 AA |
4019 | transport_class_unregister(&iscsi_connection_class); |
4020 | transport_class_unregister(&iscsi_session_class); | |
30a6c652 | 4021 | transport_class_unregister(&iscsi_host_class); |
d82ff9be | 4022 | class_unregister(&iscsi_endpoint_class); |
8d07913d | 4023 | class_unregister(&iscsi_iface_class); |
0896b752 | 4024 | class_unregister(&iscsi_transport_class); |
1da177e4 LT |
4025 | } |
4026 | ||
4027 | module_init(iscsi_transport_init); | |
4028 | module_exit(iscsi_transport_exit); | |
4029 | ||
0896b752 AA |
4030 | MODULE_AUTHOR("Mike Christie <michaelc@cs.wisc.edu>, " |
4031 | "Dmitry Yusupov <dmitry_yus@yahoo.com>, " | |
4032 | "Alex Aizman <itn780@yahoo.com>"); | |
4033 | MODULE_DESCRIPTION("iSCSI Transport Interface"); | |
1da177e4 | 4034 | MODULE_LICENSE("GPL"); |
f4246b33 | 4035 | MODULE_VERSION(ISCSI_TRANSPORT_VERSION); |
058548ae | 4036 | MODULE_ALIAS_NET_PF_PROTO(PF_NETLINK, NETLINK_ISCSI); |