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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
0896b752 | 2 | /* |
1da177e4 LT |
3 | * iSCSI transport class definitions |
4 | * | |
5 | * Copyright (C) IBM Corporation, 2004 | |
0896b752 AA |
6 | * Copyright (C) Mike Christie, 2004 - 2005 |
7 | * Copyright (C) Dmitry Yusupov, 2004 - 2005 | |
8 | * Copyright (C) Alex Aizman, 2004 - 2005 | |
1da177e4 LT |
9 | */ |
10 | #include <linux/module.h> | |
0b950672 | 11 | #include <linux/mutex.h> |
5a0e3ad6 | 12 | #include <linux/slab.h> |
90eeb01a | 13 | #include <linux/bsg-lib.h> |
8d4a690c | 14 | #include <linux/idr.h> |
0896b752 | 15 | #include <net/tcp.h> |
1da177e4 LT |
16 | #include <scsi/scsi.h> |
17 | #include <scsi/scsi_host.h> | |
18 | #include <scsi/scsi_device.h> | |
19 | #include <scsi/scsi_transport.h> | |
20 | #include <scsi/scsi_transport_iscsi.h> | |
0896b752 | 21 | #include <scsi/iscsi_if.h> |
c01be6dc | 22 | #include <scsi/scsi_cmnd.h> |
90eeb01a | 23 | #include <scsi/scsi_bsg_iscsi.h> |
1da177e4 | 24 | |
4c2133c8 | 25 | #define ISCSI_TRANSPORT_VERSION "2.0-870" |
1da177e4 | 26 | |
bba340c7 BW |
27 | #define ISCSI_SEND_MAX_ALLOWED 10 |
28 | ||
c2332b00 FH |
29 | #define CREATE_TRACE_POINTS |
30 | #include <trace/events/iscsi.h> | |
31 | ||
32 | /* | |
33 | * Export tracepoint symbols to be used by other modules. | |
34 | */ | |
35 | EXPORT_TRACEPOINT_SYMBOL_GPL(iscsi_dbg_conn); | |
36 | EXPORT_TRACEPOINT_SYMBOL_GPL(iscsi_dbg_eh); | |
37 | EXPORT_TRACEPOINT_SYMBOL_GPL(iscsi_dbg_session); | |
38 | EXPORT_TRACEPOINT_SYMBOL_GPL(iscsi_dbg_tcp); | |
39 | EXPORT_TRACEPOINT_SYMBOL_GPL(iscsi_dbg_sw_tcp); | |
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); \ | |
c2332b00 FH |
63 | iscsi_dbg_trace(trace_iscsi_dbg_trans_session, \ |
64 | &(_session)->dev, \ | |
65 | "%s " dbg_fmt, __func__, ##arg); \ | |
632248aa MC |
66 | } while (0); |
67 | ||
68 | #define ISCSI_DBG_TRANS_CONN(_conn, dbg_fmt, arg...) \ | |
69 | do { \ | |
70 | if (dbg_conn) \ | |
71 | iscsi_cls_conn_printk(KERN_INFO, _conn, \ | |
72 | "%s: " dbg_fmt, \ | |
c2332b00 FH |
73 | __func__, ##arg); \ |
74 | iscsi_dbg_trace(trace_iscsi_dbg_trans_conn, \ | |
75 | &(_conn)->dev, \ | |
76 | "%s " dbg_fmt, __func__, ##arg); \ | |
632248aa MC |
77 | } while (0); |
78 | ||
1da177e4 LT |
79 | struct iscsi_internal { |
80 | struct scsi_transport_template t; | |
0896b752 AA |
81 | struct iscsi_transport *iscsi_transport; |
82 | struct list_head list; | |
ee959b00 | 83 | struct device dev; |
30a6c652 | 84 | |
0896b752 | 85 | struct transport_container conn_cont; |
0896b752 | 86 | struct transport_container session_cont; |
1da177e4 LT |
87 | }; |
88 | ||
3c6ae371 MC |
89 | static DEFINE_IDR(iscsi_ep_idr); |
90 | static DEFINE_MUTEX(iscsi_ep_idr_mutex); | |
91 | ||
41be1444 | 92 | static atomic_t iscsi_session_nr; /* sysfs session id for next new session */ |
b5c7a12d | 93 | |
23d6fefb MC |
94 | static struct workqueue_struct *iscsi_conn_cleanup_workq; |
95 | ||
8d4a690c | 96 | static DEFINE_IDA(iscsi_sess_ida); |
0896b752 AA |
97 | /* |
98 | * list of registered transports and lock that must | |
99 | * be held while accessing list. The iscsi_transport_lock must | |
0b950672 | 100 | * be acquired after the rx_queue_mutex. |
0896b752 AA |
101 | */ |
102 | static LIST_HEAD(iscsi_transports); | |
103 | static DEFINE_SPINLOCK(iscsi_transport_lock); | |
104 | ||
105 | #define to_iscsi_internal(tmpl) \ | |
106 | container_of(tmpl, struct iscsi_internal, t) | |
107 | ||
ee959b00 TJ |
108 | #define dev_to_iscsi_internal(_dev) \ |
109 | container_of(_dev, struct iscsi_internal, dev) | |
0896b752 | 110 | |
ee959b00 | 111 | static void iscsi_transport_release(struct device *dev) |
0896b752 | 112 | { |
ee959b00 | 113 | struct iscsi_internal *priv = dev_to_iscsi_internal(dev); |
0896b752 AA |
114 | kfree(priv); |
115 | } | |
1da177e4 | 116 | |
0896b752 AA |
117 | /* |
118 | * iscsi_transport_class represents the iscsi_transports that are | |
119 | * registered. | |
120 | */ | |
121 | static struct class iscsi_transport_class = { | |
122 | .name = "iscsi_transport", | |
ee959b00 | 123 | .dev_release = iscsi_transport_release, |
0896b752 AA |
124 | }; |
125 | ||
126 | static ssize_t | |
ee959b00 TJ |
127 | show_transport_handle(struct device *dev, struct device_attribute *attr, |
128 | char *buf) | |
0896b752 | 129 | { |
ee959b00 | 130 | struct iscsi_internal *priv = dev_to_iscsi_internal(dev); |
688e8128 LD |
131 | |
132 | if (!capable(CAP_SYS_ADMIN)) | |
133 | return -EACCES; | |
ec98ea70 CL |
134 | return sysfs_emit(buf, "%llu\n", |
135 | (unsigned long long)iscsi_handle(priv->iscsi_transport)); | |
0896b752 | 136 | } |
ee959b00 | 137 | static DEVICE_ATTR(handle, S_IRUGO, show_transport_handle, NULL); |
0896b752 AA |
138 | |
139 | #define show_transport_attr(name, format) \ | |
140 | static ssize_t \ | |
ee959b00 TJ |
141 | show_transport_##name(struct device *dev, \ |
142 | struct device_attribute *attr,char *buf) \ | |
0896b752 | 143 | { \ |
ee959b00 | 144 | struct iscsi_internal *priv = dev_to_iscsi_internal(dev); \ |
ec98ea70 | 145 | return sysfs_emit(buf, format"\n", priv->iscsi_transport->name);\ |
0896b752 | 146 | } \ |
ee959b00 | 147 | static DEVICE_ATTR(name, S_IRUGO, show_transport_##name, NULL); |
0896b752 AA |
148 | |
149 | show_transport_attr(caps, "0x%x"); | |
0896b752 AA |
150 | |
151 | static struct attribute *iscsi_transport_attrs[] = { | |
ee959b00 TJ |
152 | &dev_attr_handle.attr, |
153 | &dev_attr_caps.attr, | |
0896b752 AA |
154 | NULL, |
155 | }; | |
156 | ||
157 | static struct attribute_group iscsi_transport_group = { | |
158 | .attrs = iscsi_transport_attrs, | |
159 | }; | |
160 | ||
d82ff9be MC |
161 | /* |
162 | * iSCSI endpoint attrs | |
163 | */ | |
164 | #define iscsi_dev_to_endpoint(_dev) \ | |
165 | container_of(_dev, struct iscsi_endpoint, dev) | |
166 | ||
167 | #define ISCSI_ATTR(_prefix,_name,_mode,_show,_store) \ | |
168 | struct device_attribute dev_attr_##_prefix##_##_name = \ | |
169 | __ATTR(_name,_mode,_show,_store) | |
170 | ||
171 | static void iscsi_endpoint_release(struct device *dev) | |
172 | { | |
173 | struct iscsi_endpoint *ep = iscsi_dev_to_endpoint(dev); | |
3c6ae371 MC |
174 | |
175 | mutex_lock(&iscsi_ep_idr_mutex); | |
176 | idr_remove(&iscsi_ep_idr, ep->id); | |
177 | mutex_unlock(&iscsi_ep_idr_mutex); | |
178 | ||
d82ff9be MC |
179 | kfree(ep); |
180 | } | |
181 | ||
182 | static struct class iscsi_endpoint_class = { | |
183 | .name = "iscsi_endpoint", | |
184 | .dev_release = iscsi_endpoint_release, | |
185 | }; | |
186 | ||
187 | static ssize_t | |
188 | show_ep_handle(struct device *dev, struct device_attribute *attr, char *buf) | |
189 | { | |
190 | struct iscsi_endpoint *ep = iscsi_dev_to_endpoint(dev); | |
3c6ae371 | 191 | return sysfs_emit(buf, "%d\n", ep->id); |
d82ff9be MC |
192 | } |
193 | static ISCSI_ATTR(ep, handle, S_IRUGO, show_ep_handle, NULL); | |
194 | ||
195 | static struct attribute *iscsi_endpoint_attrs[] = { | |
196 | &dev_attr_ep_handle.attr, | |
197 | NULL, | |
198 | }; | |
199 | ||
200 | static struct attribute_group iscsi_endpoint_group = { | |
201 | .attrs = iscsi_endpoint_attrs, | |
202 | }; | |
203 | ||
d82ff9be MC |
204 | struct iscsi_endpoint * |
205 | iscsi_create_endpoint(int dd_size) | |
206 | { | |
d82ff9be | 207 | struct iscsi_endpoint *ep; |
3c6ae371 | 208 | int err, id; |
d82ff9be MC |
209 | |
210 | ep = kzalloc(sizeof(*ep) + dd_size, GFP_KERNEL); | |
211 | if (!ep) | |
212 | return NULL; | |
213 | ||
3c6ae371 | 214 | mutex_lock(&iscsi_ep_idr_mutex); |
f6eed15f SG |
215 | |
216 | /* | |
217 | * First endpoint id should be 1 to comply with user space | |
218 | * applications (iscsid). | |
219 | */ | |
220 | id = idr_alloc(&iscsi_ep_idr, ep, 1, -1, GFP_NOIO); | |
3c6ae371 MC |
221 | if (id < 0) { |
222 | mutex_unlock(&iscsi_ep_idr_mutex); | |
223 | printk(KERN_ERR "Could not allocate endpoint ID. Error %d.\n", | |
224 | id); | |
225 | goto free_ep; | |
226 | } | |
227 | mutex_unlock(&iscsi_ep_idr_mutex); | |
228 | ||
d82ff9be MC |
229 | ep->id = id; |
230 | ep->dev.class = &iscsi_endpoint_class; | |
3c6ae371 | 231 | dev_set_name(&ep->dev, "ep-%d", id); |
d82ff9be MC |
232 | err = device_register(&ep->dev); |
233 | if (err) | |
f014165f | 234 | goto put_dev; |
d82ff9be MC |
235 | |
236 | err = sysfs_create_group(&ep->dev.kobj, &iscsi_endpoint_group); | |
237 | if (err) | |
238 | goto unregister_dev; | |
239 | ||
240 | if (dd_size) | |
241 | ep->dd_data = &ep[1]; | |
242 | return ep; | |
243 | ||
244 | unregister_dev: | |
245 | device_unregister(&ep->dev); | |
246 | return NULL; | |
247 | ||
f014165f | 248 | put_dev: |
3c6ae371 MC |
249 | mutex_lock(&iscsi_ep_idr_mutex); |
250 | idr_remove(&iscsi_ep_idr, id); | |
251 | mutex_unlock(&iscsi_ep_idr_mutex); | |
f014165f ZG |
252 | put_device(&ep->dev); |
253 | return NULL; | |
d82ff9be MC |
254 | free_ep: |
255 | kfree(ep); | |
256 | return NULL; | |
257 | } | |
258 | EXPORT_SYMBOL_GPL(iscsi_create_endpoint); | |
259 | ||
260 | void iscsi_destroy_endpoint(struct iscsi_endpoint *ep) | |
261 | { | |
262 | sysfs_remove_group(&ep->dev.kobj, &iscsi_endpoint_group); | |
263 | device_unregister(&ep->dev); | |
264 | } | |
265 | EXPORT_SYMBOL_GPL(iscsi_destroy_endpoint); | |
266 | ||
9e5fe170 MC |
267 | void iscsi_put_endpoint(struct iscsi_endpoint *ep) |
268 | { | |
269 | put_device(&ep->dev); | |
270 | } | |
271 | EXPORT_SYMBOL_GPL(iscsi_put_endpoint); | |
272 | ||
273 | /** | |
274 | * iscsi_lookup_endpoint - get ep from handle | |
275 | * @handle: endpoint handle | |
276 | * | |
277 | * Caller must do a iscsi_put_endpoint. | |
278 | */ | |
d82ff9be MC |
279 | struct iscsi_endpoint *iscsi_lookup_endpoint(u64 handle) |
280 | { | |
3c6ae371 | 281 | struct iscsi_endpoint *ep; |
d82ff9be | 282 | |
3c6ae371 MC |
283 | mutex_lock(&iscsi_ep_idr_mutex); |
284 | ep = idr_find(&iscsi_ep_idr, handle); | |
285 | if (!ep) | |
286 | goto unlock; | |
d82ff9be | 287 | |
3c6ae371 MC |
288 | get_device(&ep->dev); |
289 | unlock: | |
290 | mutex_unlock(&iscsi_ep_idr_mutex); | |
291 | return ep; | |
d82ff9be MC |
292 | } |
293 | EXPORT_SYMBOL_GPL(iscsi_lookup_endpoint); | |
294 | ||
8d07913d MC |
295 | /* |
296 | * Interface to display network param to sysfs | |
297 | */ | |
298 | ||
299 | static void iscsi_iface_release(struct device *dev) | |
300 | { | |
301 | struct iscsi_iface *iface = iscsi_dev_to_iface(dev); | |
302 | struct device *parent = iface->dev.parent; | |
303 | ||
304 | kfree(iface); | |
305 | put_device(parent); | |
306 | } | |
307 | ||
308 | ||
309 | static struct class iscsi_iface_class = { | |
310 | .name = "iscsi_iface", | |
311 | .dev_release = iscsi_iface_release, | |
312 | }; | |
313 | ||
314 | #define ISCSI_IFACE_ATTR(_prefix, _name, _mode, _show, _store) \ | |
315 | struct device_attribute dev_attr_##_prefix##_##_name = \ | |
316 | __ATTR(_name, _mode, _show, _store) | |
317 | ||
318 | /* iface attrs show */ | |
319 | #define iscsi_iface_attr_show(type, name, param_type, param) \ | |
320 | static ssize_t \ | |
321 | show_##type##_##name(struct device *dev, struct device_attribute *attr, \ | |
322 | char *buf) \ | |
323 | { \ | |
324 | struct iscsi_iface *iface = iscsi_dev_to_iface(dev); \ | |
325 | struct iscsi_transport *t = iface->transport; \ | |
326 | return t->get_iface_param(iface, param_type, param, buf); \ | |
327 | } \ | |
328 | ||
329 | #define iscsi_iface_net_attr(type, name, param) \ | |
330 | iscsi_iface_attr_show(type, name, ISCSI_NET_PARAM, param) \ | |
331 | static ISCSI_IFACE_ATTR(type, name, S_IRUGO, show_##type##_##name, NULL); | |
332 | ||
3e0f65b3 HZ |
333 | #define iscsi_iface_attr(type, name, param) \ |
334 | iscsi_iface_attr_show(type, name, ISCSI_IFACE_PARAM, param) \ | |
335 | static ISCSI_IFACE_ATTR(type, name, S_IRUGO, show_##type##_##name, NULL); | |
336 | ||
337 | /* generic read only ipv4 attribute */ | |
8d07913d MC |
338 | iscsi_iface_net_attr(ipv4_iface, ipaddress, ISCSI_NET_PARAM_IPV4_ADDR); |
339 | iscsi_iface_net_attr(ipv4_iface, gateway, ISCSI_NET_PARAM_IPV4_GW); | |
340 | iscsi_iface_net_attr(ipv4_iface, subnet, ISCSI_NET_PARAM_IPV4_SUBNET); | |
341 | iscsi_iface_net_attr(ipv4_iface, bootproto, ISCSI_NET_PARAM_IPV4_BOOTPROTO); | |
3e0f65b3 HZ |
342 | iscsi_iface_net_attr(ipv4_iface, dhcp_dns_address_en, |
343 | ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN); | |
344 | iscsi_iface_net_attr(ipv4_iface, dhcp_slp_da_info_en, | |
345 | ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN); | |
346 | iscsi_iface_net_attr(ipv4_iface, tos_en, ISCSI_NET_PARAM_IPV4_TOS_EN); | |
347 | iscsi_iface_net_attr(ipv4_iface, tos, ISCSI_NET_PARAM_IPV4_TOS); | |
348 | iscsi_iface_net_attr(ipv4_iface, grat_arp_en, | |
349 | ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN); | |
350 | iscsi_iface_net_attr(ipv4_iface, dhcp_alt_client_id_en, | |
351 | ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN); | |
352 | iscsi_iface_net_attr(ipv4_iface, dhcp_alt_client_id, | |
353 | ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID); | |
354 | iscsi_iface_net_attr(ipv4_iface, dhcp_req_vendor_id_en, | |
355 | ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN); | |
356 | iscsi_iface_net_attr(ipv4_iface, dhcp_use_vendor_id_en, | |
357 | ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN); | |
358 | iscsi_iface_net_attr(ipv4_iface, dhcp_vendor_id, | |
359 | ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID); | |
360 | iscsi_iface_net_attr(ipv4_iface, dhcp_learn_iqn_en, | |
361 | ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN); | |
362 | iscsi_iface_net_attr(ipv4_iface, fragment_disable, | |
363 | ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE); | |
364 | iscsi_iface_net_attr(ipv4_iface, incoming_forwarding_en, | |
365 | ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN); | |
366 | iscsi_iface_net_attr(ipv4_iface, ttl, ISCSI_NET_PARAM_IPV4_TTL); | |
8d07913d MC |
367 | |
368 | /* generic read only ipv6 attribute */ | |
369 | iscsi_iface_net_attr(ipv6_iface, ipaddress, ISCSI_NET_PARAM_IPV6_ADDR); | |
3e0f65b3 HZ |
370 | iscsi_iface_net_attr(ipv6_iface, link_local_addr, |
371 | ISCSI_NET_PARAM_IPV6_LINKLOCAL); | |
8d07913d MC |
372 | iscsi_iface_net_attr(ipv6_iface, router_addr, ISCSI_NET_PARAM_IPV6_ROUTER); |
373 | iscsi_iface_net_attr(ipv6_iface, ipaddr_autocfg, | |
374 | ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG); | |
88f4f517 | 375 | iscsi_iface_net_attr(ipv6_iface, link_local_autocfg, |
8d07913d | 376 | ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG); |
3e0f65b3 HZ |
377 | iscsi_iface_net_attr(ipv6_iface, link_local_state, |
378 | ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE); | |
379 | iscsi_iface_net_attr(ipv6_iface, router_state, | |
380 | ISCSI_NET_PARAM_IPV6_ROUTER_STATE); | |
381 | iscsi_iface_net_attr(ipv6_iface, grat_neighbor_adv_en, | |
382 | ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN); | |
383 | iscsi_iface_net_attr(ipv6_iface, mld_en, ISCSI_NET_PARAM_IPV6_MLD_EN); | |
384 | iscsi_iface_net_attr(ipv6_iface, flow_label, ISCSI_NET_PARAM_IPV6_FLOW_LABEL); | |
385 | iscsi_iface_net_attr(ipv6_iface, traffic_class, | |
386 | ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS); | |
387 | iscsi_iface_net_attr(ipv6_iface, hop_limit, ISCSI_NET_PARAM_IPV6_HOP_LIMIT); | |
388 | iscsi_iface_net_attr(ipv6_iface, nd_reachable_tmo, | |
389 | ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO); | |
390 | iscsi_iface_net_attr(ipv6_iface, nd_rexmit_time, | |
391 | ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME); | |
392 | iscsi_iface_net_attr(ipv6_iface, nd_stale_tmo, | |
393 | ISCSI_NET_PARAM_IPV6_ND_STALE_TMO); | |
394 | iscsi_iface_net_attr(ipv6_iface, dup_addr_detect_cnt, | |
395 | ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT); | |
396 | iscsi_iface_net_attr(ipv6_iface, router_adv_link_mtu, | |
397 | ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU); | |
8d07913d MC |
398 | |
399 | /* common read only iface attribute */ | |
400 | iscsi_iface_net_attr(iface, enabled, ISCSI_NET_PARAM_IFACE_ENABLE); | |
2d63673b | 401 | iscsi_iface_net_attr(iface, vlan_id, ISCSI_NET_PARAM_VLAN_ID); |
4223b9e9 MC |
402 | iscsi_iface_net_attr(iface, vlan_priority, ISCSI_NET_PARAM_VLAN_PRIORITY); |
403 | iscsi_iface_net_attr(iface, vlan_enabled, ISCSI_NET_PARAM_VLAN_ENABLED); | |
8c7d40fb | 404 | iscsi_iface_net_attr(iface, mtu, ISCSI_NET_PARAM_MTU); |
fcb5124e | 405 | iscsi_iface_net_attr(iface, port, ISCSI_NET_PARAM_PORT); |
3e0f65b3 HZ |
406 | iscsi_iface_net_attr(iface, ipaddress_state, ISCSI_NET_PARAM_IPADDR_STATE); |
407 | iscsi_iface_net_attr(iface, delayed_ack_en, ISCSI_NET_PARAM_DELAYED_ACK_EN); | |
408 | iscsi_iface_net_attr(iface, tcp_nagle_disable, | |
409 | ISCSI_NET_PARAM_TCP_NAGLE_DISABLE); | |
410 | iscsi_iface_net_attr(iface, tcp_wsf_disable, ISCSI_NET_PARAM_TCP_WSF_DISABLE); | |
411 | iscsi_iface_net_attr(iface, tcp_wsf, ISCSI_NET_PARAM_TCP_WSF); | |
412 | iscsi_iface_net_attr(iface, tcp_timer_scale, ISCSI_NET_PARAM_TCP_TIMER_SCALE); | |
413 | iscsi_iface_net_attr(iface, tcp_timestamp_en, ISCSI_NET_PARAM_TCP_TIMESTAMP_EN); | |
414 | iscsi_iface_net_attr(iface, cache_id, ISCSI_NET_PARAM_CACHE_ID); | |
415 | iscsi_iface_net_attr(iface, redirect_en, ISCSI_NET_PARAM_REDIRECT_EN); | |
416 | ||
417 | /* common iscsi specific settings attributes */ | |
418 | iscsi_iface_attr(iface, def_taskmgmt_tmo, ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO); | |
419 | iscsi_iface_attr(iface, header_digest, ISCSI_IFACE_PARAM_HDRDGST_EN); | |
420 | iscsi_iface_attr(iface, data_digest, ISCSI_IFACE_PARAM_DATADGST_EN); | |
421 | iscsi_iface_attr(iface, immediate_data, ISCSI_IFACE_PARAM_IMM_DATA_EN); | |
422 | iscsi_iface_attr(iface, initial_r2t, ISCSI_IFACE_PARAM_INITIAL_R2T_EN); | |
423 | iscsi_iface_attr(iface, data_seq_in_order, | |
424 | ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN); | |
425 | iscsi_iface_attr(iface, data_pdu_in_order, ISCSI_IFACE_PARAM_PDU_INORDER_EN); | |
426 | iscsi_iface_attr(iface, erl, ISCSI_IFACE_PARAM_ERL); | |
427 | iscsi_iface_attr(iface, max_recv_dlength, ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH); | |
428 | iscsi_iface_attr(iface, first_burst_len, ISCSI_IFACE_PARAM_FIRST_BURST); | |
429 | iscsi_iface_attr(iface, max_outstanding_r2t, ISCSI_IFACE_PARAM_MAX_R2T); | |
430 | iscsi_iface_attr(iface, max_burst_len, ISCSI_IFACE_PARAM_MAX_BURST); | |
431 | iscsi_iface_attr(iface, chap_auth, ISCSI_IFACE_PARAM_CHAP_AUTH_EN); | |
432 | iscsi_iface_attr(iface, bidi_chap, ISCSI_IFACE_PARAM_BIDI_CHAP_EN); | |
433 | iscsi_iface_attr(iface, discovery_auth_optional, | |
434 | ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL); | |
435 | iscsi_iface_attr(iface, discovery_logout, | |
436 | ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN); | |
437 | iscsi_iface_attr(iface, strict_login_comp_en, | |
438 | ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN); | |
439 | iscsi_iface_attr(iface, initiator_name, ISCSI_IFACE_PARAM_INITIATOR_NAME); | |
8d07913d | 440 | |
587a1f16 | 441 | static umode_t iscsi_iface_attr_is_visible(struct kobject *kobj, |
8d07913d MC |
442 | struct attribute *attr, int i) |
443 | { | |
444 | struct device *dev = container_of(kobj, struct device, kobj); | |
445 | struct iscsi_iface *iface = iscsi_dev_to_iface(dev); | |
446 | struct iscsi_transport *t = iface->transport; | |
e746f345 | 447 | int param = -1; |
8d07913d | 448 | |
4e285508 | 449 | if (attr == &dev_attr_iface_def_taskmgmt_tmo.attr) |
3e0f65b3 HZ |
450 | param = ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO; |
451 | else if (attr == &dev_attr_iface_header_digest.attr) | |
452 | param = ISCSI_IFACE_PARAM_HDRDGST_EN; | |
453 | else if (attr == &dev_attr_iface_data_digest.attr) | |
454 | param = ISCSI_IFACE_PARAM_DATADGST_EN; | |
455 | else if (attr == &dev_attr_iface_immediate_data.attr) | |
456 | param = ISCSI_IFACE_PARAM_IMM_DATA_EN; | |
457 | else if (attr == &dev_attr_iface_initial_r2t.attr) | |
458 | param = ISCSI_IFACE_PARAM_INITIAL_R2T_EN; | |
459 | else if (attr == &dev_attr_iface_data_seq_in_order.attr) | |
460 | param = ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN; | |
461 | else if (attr == &dev_attr_iface_data_pdu_in_order.attr) | |
462 | param = ISCSI_IFACE_PARAM_PDU_INORDER_EN; | |
463 | else if (attr == &dev_attr_iface_erl.attr) | |
464 | param = ISCSI_IFACE_PARAM_ERL; | |
465 | else if (attr == &dev_attr_iface_max_recv_dlength.attr) | |
466 | param = ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH; | |
467 | else if (attr == &dev_attr_iface_first_burst_len.attr) | |
468 | param = ISCSI_IFACE_PARAM_FIRST_BURST; | |
469 | else if (attr == &dev_attr_iface_max_outstanding_r2t.attr) | |
470 | param = ISCSI_IFACE_PARAM_MAX_R2T; | |
471 | else if (attr == &dev_attr_iface_max_burst_len.attr) | |
472 | param = ISCSI_IFACE_PARAM_MAX_BURST; | |
473 | else if (attr == &dev_attr_iface_chap_auth.attr) | |
474 | param = ISCSI_IFACE_PARAM_CHAP_AUTH_EN; | |
475 | else if (attr == &dev_attr_iface_bidi_chap.attr) | |
476 | param = ISCSI_IFACE_PARAM_BIDI_CHAP_EN; | |
477 | else if (attr == &dev_attr_iface_discovery_auth_optional.attr) | |
478 | param = ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL; | |
479 | else if (attr == &dev_attr_iface_discovery_logout.attr) | |
480 | param = ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN; | |
481 | else if (attr == &dev_attr_iface_strict_login_comp_en.attr) | |
482 | param = ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN; | |
483 | else if (attr == &dev_attr_iface_initiator_name.attr) | |
484 | param = ISCSI_IFACE_PARAM_INITIATOR_NAME; | |
e746f345 MC |
485 | |
486 | if (param != -1) | |
487 | return t->attr_is_visible(ISCSI_IFACE_PARAM, param); | |
488 | ||
4e285508 BL |
489 | if (attr == &dev_attr_iface_enabled.attr) |
490 | param = ISCSI_NET_PARAM_IFACE_ENABLE; | |
491 | else if (attr == &dev_attr_iface_vlan_id.attr) | |
e746f345 MC |
492 | param = ISCSI_NET_PARAM_VLAN_ID; |
493 | else if (attr == &dev_attr_iface_vlan_priority.attr) | |
494 | param = ISCSI_NET_PARAM_VLAN_PRIORITY; | |
495 | else if (attr == &dev_attr_iface_vlan_enabled.attr) | |
496 | param = ISCSI_NET_PARAM_VLAN_ENABLED; | |
497 | else if (attr == &dev_attr_iface_mtu.attr) | |
498 | param = ISCSI_NET_PARAM_MTU; | |
499 | else if (attr == &dev_attr_iface_port.attr) | |
500 | param = ISCSI_NET_PARAM_PORT; | |
501 | else if (attr == &dev_attr_iface_ipaddress_state.attr) | |
502 | param = ISCSI_NET_PARAM_IPADDR_STATE; | |
503 | else if (attr == &dev_attr_iface_delayed_ack_en.attr) | |
504 | param = ISCSI_NET_PARAM_DELAYED_ACK_EN; | |
505 | else if (attr == &dev_attr_iface_tcp_nagle_disable.attr) | |
506 | param = ISCSI_NET_PARAM_TCP_NAGLE_DISABLE; | |
507 | else if (attr == &dev_attr_iface_tcp_wsf_disable.attr) | |
508 | param = ISCSI_NET_PARAM_TCP_WSF_DISABLE; | |
509 | else if (attr == &dev_attr_iface_tcp_wsf.attr) | |
510 | param = ISCSI_NET_PARAM_TCP_WSF; | |
511 | else if (attr == &dev_attr_iface_tcp_timer_scale.attr) | |
512 | param = ISCSI_NET_PARAM_TCP_TIMER_SCALE; | |
513 | else if (attr == &dev_attr_iface_tcp_timestamp_en.attr) | |
514 | param = ISCSI_NET_PARAM_TCP_TIMESTAMP_EN; | |
515 | else if (attr == &dev_attr_iface_cache_id.attr) | |
516 | param = ISCSI_NET_PARAM_CACHE_ID; | |
517 | else if (attr == &dev_attr_iface_redirect_en.attr) | |
518 | param = ISCSI_NET_PARAM_REDIRECT_EN; | |
b78dbba0 | 519 | else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) { |
8d07913d | 520 | if (attr == &dev_attr_ipv4_iface_ipaddress.attr) |
b78dbba0 | 521 | param = ISCSI_NET_PARAM_IPV4_ADDR; |
8d07913d | 522 | else if (attr == &dev_attr_ipv4_iface_gateway.attr) |
b78dbba0 | 523 | param = ISCSI_NET_PARAM_IPV4_GW; |
8d07913d | 524 | else if (attr == &dev_attr_ipv4_iface_subnet.attr) |
b78dbba0 | 525 | param = ISCSI_NET_PARAM_IPV4_SUBNET; |
8d07913d | 526 | else if (attr == &dev_attr_ipv4_iface_bootproto.attr) |
b78dbba0 | 527 | param = ISCSI_NET_PARAM_IPV4_BOOTPROTO; |
3e0f65b3 HZ |
528 | else if (attr == |
529 | &dev_attr_ipv4_iface_dhcp_dns_address_en.attr) | |
530 | param = ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN; | |
531 | else if (attr == | |
532 | &dev_attr_ipv4_iface_dhcp_slp_da_info_en.attr) | |
533 | param = ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN; | |
534 | else if (attr == &dev_attr_ipv4_iface_tos_en.attr) | |
535 | param = ISCSI_NET_PARAM_IPV4_TOS_EN; | |
536 | else if (attr == &dev_attr_ipv4_iface_tos.attr) | |
537 | param = ISCSI_NET_PARAM_IPV4_TOS; | |
538 | else if (attr == &dev_attr_ipv4_iface_grat_arp_en.attr) | |
539 | param = ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN; | |
540 | else if (attr == | |
541 | &dev_attr_ipv4_iface_dhcp_alt_client_id_en.attr) | |
542 | param = ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN; | |
543 | else if (attr == &dev_attr_ipv4_iface_dhcp_alt_client_id.attr) | |
544 | param = ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID; | |
545 | else if (attr == | |
546 | &dev_attr_ipv4_iface_dhcp_req_vendor_id_en.attr) | |
547 | param = ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN; | |
548 | else if (attr == | |
549 | &dev_attr_ipv4_iface_dhcp_use_vendor_id_en.attr) | |
550 | param = ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN; | |
551 | else if (attr == &dev_attr_ipv4_iface_dhcp_vendor_id.attr) | |
552 | param = ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID; | |
553 | else if (attr == | |
554 | &dev_attr_ipv4_iface_dhcp_learn_iqn_en.attr) | |
555 | param = ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN; | |
556 | else if (attr == | |
557 | &dev_attr_ipv4_iface_fragment_disable.attr) | |
558 | param = ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE; | |
559 | else if (attr == | |
560 | &dev_attr_ipv4_iface_incoming_forwarding_en.attr) | |
561 | param = ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN; | |
562 | else if (attr == &dev_attr_ipv4_iface_ttl.attr) | |
563 | param = ISCSI_NET_PARAM_IPV4_TTL; | |
b78dbba0 MC |
564 | else |
565 | return 0; | |
8d07913d MC |
566 | } else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6) { |
567 | if (attr == &dev_attr_ipv6_iface_ipaddress.attr) | |
b78dbba0 | 568 | param = ISCSI_NET_PARAM_IPV6_ADDR; |
8d07913d | 569 | else if (attr == &dev_attr_ipv6_iface_link_local_addr.attr) |
b78dbba0 | 570 | param = ISCSI_NET_PARAM_IPV6_LINKLOCAL; |
8d07913d | 571 | else if (attr == &dev_attr_ipv6_iface_router_addr.attr) |
b78dbba0 | 572 | param = ISCSI_NET_PARAM_IPV6_ROUTER; |
8d07913d | 573 | else if (attr == &dev_attr_ipv6_iface_ipaddr_autocfg.attr) |
b78dbba0 | 574 | param = ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG; |
88f4f517 | 575 | else if (attr == &dev_attr_ipv6_iface_link_local_autocfg.attr) |
b78dbba0 | 576 | param = ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG; |
3e0f65b3 HZ |
577 | else if (attr == &dev_attr_ipv6_iface_link_local_state.attr) |
578 | param = ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE; | |
579 | else if (attr == &dev_attr_ipv6_iface_router_state.attr) | |
580 | param = ISCSI_NET_PARAM_IPV6_ROUTER_STATE; | |
581 | else if (attr == | |
582 | &dev_attr_ipv6_iface_grat_neighbor_adv_en.attr) | |
583 | param = ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN; | |
584 | else if (attr == &dev_attr_ipv6_iface_mld_en.attr) | |
585 | param = ISCSI_NET_PARAM_IPV6_MLD_EN; | |
586 | else if (attr == &dev_attr_ipv6_iface_flow_label.attr) | |
587 | param = ISCSI_NET_PARAM_IPV6_FLOW_LABEL; | |
588 | else if (attr == &dev_attr_ipv6_iface_traffic_class.attr) | |
589 | param = ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS; | |
590 | else if (attr == &dev_attr_ipv6_iface_hop_limit.attr) | |
591 | param = ISCSI_NET_PARAM_IPV6_HOP_LIMIT; | |
592 | else if (attr == &dev_attr_ipv6_iface_nd_reachable_tmo.attr) | |
593 | param = ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO; | |
594 | else if (attr == &dev_attr_ipv6_iface_nd_rexmit_time.attr) | |
595 | param = ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME; | |
596 | else if (attr == &dev_attr_ipv6_iface_nd_stale_tmo.attr) | |
597 | param = ISCSI_NET_PARAM_IPV6_ND_STALE_TMO; | |
598 | else if (attr == &dev_attr_ipv6_iface_dup_addr_detect_cnt.attr) | |
599 | param = ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT; | |
600 | else if (attr == &dev_attr_ipv6_iface_router_adv_link_mtu.attr) | |
601 | param = ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU; | |
b78dbba0 MC |
602 | else |
603 | return 0; | |
604 | } else { | |
605 | WARN_ONCE(1, "Invalid iface attr"); | |
606 | return 0; | |
8d07913d MC |
607 | } |
608 | ||
e746f345 | 609 | return t->attr_is_visible(ISCSI_NET_PARAM, param); |
8d07913d MC |
610 | } |
611 | ||
612 | static struct attribute *iscsi_iface_attrs[] = { | |
613 | &dev_attr_iface_enabled.attr, | |
2d63673b | 614 | &dev_attr_iface_vlan_id.attr, |
4223b9e9 MC |
615 | &dev_attr_iface_vlan_priority.attr, |
616 | &dev_attr_iface_vlan_enabled.attr, | |
8d07913d MC |
617 | &dev_attr_ipv4_iface_ipaddress.attr, |
618 | &dev_attr_ipv4_iface_gateway.attr, | |
619 | &dev_attr_ipv4_iface_subnet.attr, | |
620 | &dev_attr_ipv4_iface_bootproto.attr, | |
621 | &dev_attr_ipv6_iface_ipaddress.attr, | |
622 | &dev_attr_ipv6_iface_link_local_addr.attr, | |
623 | &dev_attr_ipv6_iface_router_addr.attr, | |
624 | &dev_attr_ipv6_iface_ipaddr_autocfg.attr, | |
88f4f517 | 625 | &dev_attr_ipv6_iface_link_local_autocfg.attr, |
8c7d40fb | 626 | &dev_attr_iface_mtu.attr, |
fcb5124e | 627 | &dev_attr_iface_port.attr, |
3e0f65b3 HZ |
628 | &dev_attr_iface_ipaddress_state.attr, |
629 | &dev_attr_iface_delayed_ack_en.attr, | |
630 | &dev_attr_iface_tcp_nagle_disable.attr, | |
631 | &dev_attr_iface_tcp_wsf_disable.attr, | |
632 | &dev_attr_iface_tcp_wsf.attr, | |
633 | &dev_attr_iface_tcp_timer_scale.attr, | |
634 | &dev_attr_iface_tcp_timestamp_en.attr, | |
635 | &dev_attr_iface_cache_id.attr, | |
636 | &dev_attr_iface_redirect_en.attr, | |
637 | &dev_attr_iface_def_taskmgmt_tmo.attr, | |
638 | &dev_attr_iface_header_digest.attr, | |
639 | &dev_attr_iface_data_digest.attr, | |
640 | &dev_attr_iface_immediate_data.attr, | |
641 | &dev_attr_iface_initial_r2t.attr, | |
642 | &dev_attr_iface_data_seq_in_order.attr, | |
643 | &dev_attr_iface_data_pdu_in_order.attr, | |
644 | &dev_attr_iface_erl.attr, | |
645 | &dev_attr_iface_max_recv_dlength.attr, | |
646 | &dev_attr_iface_first_burst_len.attr, | |
647 | &dev_attr_iface_max_outstanding_r2t.attr, | |
648 | &dev_attr_iface_max_burst_len.attr, | |
649 | &dev_attr_iface_chap_auth.attr, | |
650 | &dev_attr_iface_bidi_chap.attr, | |
651 | &dev_attr_iface_discovery_auth_optional.attr, | |
652 | &dev_attr_iface_discovery_logout.attr, | |
653 | &dev_attr_iface_strict_login_comp_en.attr, | |
654 | &dev_attr_iface_initiator_name.attr, | |
655 | &dev_attr_ipv4_iface_dhcp_dns_address_en.attr, | |
656 | &dev_attr_ipv4_iface_dhcp_slp_da_info_en.attr, | |
657 | &dev_attr_ipv4_iface_tos_en.attr, | |
658 | &dev_attr_ipv4_iface_tos.attr, | |
659 | &dev_attr_ipv4_iface_grat_arp_en.attr, | |
660 | &dev_attr_ipv4_iface_dhcp_alt_client_id_en.attr, | |
661 | &dev_attr_ipv4_iface_dhcp_alt_client_id.attr, | |
662 | &dev_attr_ipv4_iface_dhcp_req_vendor_id_en.attr, | |
663 | &dev_attr_ipv4_iface_dhcp_use_vendor_id_en.attr, | |
664 | &dev_attr_ipv4_iface_dhcp_vendor_id.attr, | |
665 | &dev_attr_ipv4_iface_dhcp_learn_iqn_en.attr, | |
666 | &dev_attr_ipv4_iface_fragment_disable.attr, | |
667 | &dev_attr_ipv4_iface_incoming_forwarding_en.attr, | |
668 | &dev_attr_ipv4_iface_ttl.attr, | |
669 | &dev_attr_ipv6_iface_link_local_state.attr, | |
670 | &dev_attr_ipv6_iface_router_state.attr, | |
671 | &dev_attr_ipv6_iface_grat_neighbor_adv_en.attr, | |
672 | &dev_attr_ipv6_iface_mld_en.attr, | |
673 | &dev_attr_ipv6_iface_flow_label.attr, | |
674 | &dev_attr_ipv6_iface_traffic_class.attr, | |
675 | &dev_attr_ipv6_iface_hop_limit.attr, | |
676 | &dev_attr_ipv6_iface_nd_reachable_tmo.attr, | |
677 | &dev_attr_ipv6_iface_nd_rexmit_time.attr, | |
678 | &dev_attr_ipv6_iface_nd_stale_tmo.attr, | |
679 | &dev_attr_ipv6_iface_dup_addr_detect_cnt.attr, | |
680 | &dev_attr_ipv6_iface_router_adv_link_mtu.attr, | |
8d07913d MC |
681 | NULL, |
682 | }; | |
683 | ||
684 | static struct attribute_group iscsi_iface_group = { | |
685 | .attrs = iscsi_iface_attrs, | |
686 | .is_visible = iscsi_iface_attr_is_visible, | |
687 | }; | |
688 | ||
3e0f65b3 HZ |
689 | /* convert iscsi_ipaddress_state values to ascii string name */ |
690 | static const struct { | |
691 | enum iscsi_ipaddress_state value; | |
692 | char *name; | |
693 | } iscsi_ipaddress_state_names[] = { | |
694 | {ISCSI_IPDDRESS_STATE_UNCONFIGURED, "Unconfigured" }, | |
695 | {ISCSI_IPDDRESS_STATE_ACQUIRING, "Acquiring" }, | |
696 | {ISCSI_IPDDRESS_STATE_TENTATIVE, "Tentative" }, | |
697 | {ISCSI_IPDDRESS_STATE_VALID, "Valid" }, | |
698 | {ISCSI_IPDDRESS_STATE_DISABLING, "Disabling" }, | |
699 | {ISCSI_IPDDRESS_STATE_INVALID, "Invalid" }, | |
700 | {ISCSI_IPDDRESS_STATE_DEPRECATED, "Deprecated" }, | |
701 | }; | |
702 | ||
703 | char *iscsi_get_ipaddress_state_name(enum iscsi_ipaddress_state port_state) | |
704 | { | |
705 | int i; | |
706 | char *state = NULL; | |
707 | ||
708 | for (i = 0; i < ARRAY_SIZE(iscsi_ipaddress_state_names); i++) { | |
709 | if (iscsi_ipaddress_state_names[i].value == port_state) { | |
710 | state = iscsi_ipaddress_state_names[i].name; | |
711 | break; | |
712 | } | |
713 | } | |
714 | return state; | |
715 | } | |
716 | EXPORT_SYMBOL_GPL(iscsi_get_ipaddress_state_name); | |
717 | ||
718 | /* convert iscsi_router_state values to ascii string name */ | |
719 | static const struct { | |
720 | enum iscsi_router_state value; | |
721 | char *name; | |
722 | } iscsi_router_state_names[] = { | |
723 | {ISCSI_ROUTER_STATE_UNKNOWN, "Unknown" }, | |
724 | {ISCSI_ROUTER_STATE_ADVERTISED, "Advertised" }, | |
725 | {ISCSI_ROUTER_STATE_MANUAL, "Manual" }, | |
726 | {ISCSI_ROUTER_STATE_STALE, "Stale" }, | |
727 | }; | |
728 | ||
729 | char *iscsi_get_router_state_name(enum iscsi_router_state router_state) | |
730 | { | |
731 | int i; | |
732 | char *state = NULL; | |
733 | ||
734 | for (i = 0; i < ARRAY_SIZE(iscsi_router_state_names); i++) { | |
735 | if (iscsi_router_state_names[i].value == router_state) { | |
736 | state = iscsi_router_state_names[i].name; | |
737 | break; | |
738 | } | |
739 | } | |
740 | return state; | |
741 | } | |
742 | EXPORT_SYMBOL_GPL(iscsi_get_router_state_name); | |
743 | ||
8d07913d MC |
744 | struct iscsi_iface * |
745 | iscsi_create_iface(struct Scsi_Host *shost, struct iscsi_transport *transport, | |
746 | uint32_t iface_type, uint32_t iface_num, int dd_size) | |
747 | { | |
748 | struct iscsi_iface *iface; | |
749 | int err; | |
750 | ||
751 | iface = kzalloc(sizeof(*iface) + dd_size, GFP_KERNEL); | |
752 | if (!iface) | |
753 | return NULL; | |
754 | ||
755 | iface->transport = transport; | |
756 | iface->iface_type = iface_type; | |
757 | iface->iface_num = iface_num; | |
758 | iface->dev.release = iscsi_iface_release; | |
759 | iface->dev.class = &iscsi_iface_class; | |
760 | /* parent reference released in iscsi_iface_release */ | |
761 | iface->dev.parent = get_device(&shost->shost_gendev); | |
762 | if (iface_type == ISCSI_IFACE_TYPE_IPV4) | |
763 | dev_set_name(&iface->dev, "ipv4-iface-%u-%u", shost->host_no, | |
764 | iface_num); | |
765 | else | |
766 | dev_set_name(&iface->dev, "ipv6-iface-%u-%u", shost->host_no, | |
767 | iface_num); | |
768 | ||
769 | err = device_register(&iface->dev); | |
770 | if (err) | |
f014165f | 771 | goto put_dev; |
8d07913d MC |
772 | |
773 | err = sysfs_create_group(&iface->dev.kobj, &iscsi_iface_group); | |
774 | if (err) | |
775 | goto unreg_iface; | |
776 | ||
777 | if (dd_size) | |
778 | iface->dd_data = &iface[1]; | |
779 | return iface; | |
780 | ||
781 | unreg_iface: | |
782 | device_unregister(&iface->dev); | |
783 | return NULL; | |
784 | ||
f014165f ZG |
785 | put_dev: |
786 | put_device(&iface->dev); | |
8d07913d MC |
787 | return NULL; |
788 | } | |
789 | EXPORT_SYMBOL_GPL(iscsi_create_iface); | |
790 | ||
791 | void iscsi_destroy_iface(struct iscsi_iface *iface) | |
792 | { | |
793 | sysfs_remove_group(&iface->dev.kobj, &iscsi_iface_group); | |
794 | device_unregister(&iface->dev); | |
795 | } | |
796 | EXPORT_SYMBOL_GPL(iscsi_destroy_iface); | |
797 | ||
c6a4bb2e AC |
798 | /* |
799 | * Interface to display flash node params to sysfs | |
800 | */ | |
801 | ||
802 | #define ISCSI_FLASHNODE_ATTR(_prefix, _name, _mode, _show, _store) \ | |
803 | struct device_attribute dev_attr_##_prefix##_##_name = \ | |
804 | __ATTR(_name, _mode, _show, _store) | |
805 | ||
806 | /* flash node session attrs show */ | |
807 | #define iscsi_flashnode_sess_attr_show(type, name, param) \ | |
808 | static ssize_t \ | |
809 | show_##type##_##name(struct device *dev, struct device_attribute *attr, \ | |
810 | char *buf) \ | |
811 | { \ | |
812 | struct iscsi_bus_flash_session *fnode_sess = \ | |
813 | iscsi_dev_to_flash_session(dev);\ | |
814 | struct iscsi_transport *t = fnode_sess->transport; \ | |
815 | return t->get_flashnode_param(fnode_sess, param, buf); \ | |
816 | } \ | |
817 | ||
818 | ||
819 | #define iscsi_flashnode_sess_attr(type, name, param) \ | |
820 | iscsi_flashnode_sess_attr_show(type, name, param) \ | |
821 | static ISCSI_FLASHNODE_ATTR(type, name, S_IRUGO, \ | |
822 | show_##type##_##name, NULL); | |
823 | ||
824 | /* Flash node session attributes */ | |
825 | ||
826 | iscsi_flashnode_sess_attr(fnode, auto_snd_tgt_disable, | |
827 | ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE); | |
828 | iscsi_flashnode_sess_attr(fnode, discovery_session, | |
829 | ISCSI_FLASHNODE_DISCOVERY_SESS); | |
830 | iscsi_flashnode_sess_attr(fnode, portal_type, ISCSI_FLASHNODE_PORTAL_TYPE); | |
831 | iscsi_flashnode_sess_attr(fnode, entry_enable, ISCSI_FLASHNODE_ENTRY_EN); | |
832 | iscsi_flashnode_sess_attr(fnode, immediate_data, ISCSI_FLASHNODE_IMM_DATA_EN); | |
833 | iscsi_flashnode_sess_attr(fnode, initial_r2t, ISCSI_FLASHNODE_INITIAL_R2T_EN); | |
834 | iscsi_flashnode_sess_attr(fnode, data_seq_in_order, | |
835 | ISCSI_FLASHNODE_DATASEQ_INORDER); | |
836 | iscsi_flashnode_sess_attr(fnode, data_pdu_in_order, | |
837 | ISCSI_FLASHNODE_PDU_INORDER); | |
838 | iscsi_flashnode_sess_attr(fnode, chap_auth, ISCSI_FLASHNODE_CHAP_AUTH_EN); | |
839 | iscsi_flashnode_sess_attr(fnode, discovery_logout, | |
840 | ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN); | |
841 | iscsi_flashnode_sess_attr(fnode, bidi_chap, ISCSI_FLASHNODE_BIDI_CHAP_EN); | |
842 | iscsi_flashnode_sess_attr(fnode, discovery_auth_optional, | |
843 | ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL); | |
844 | iscsi_flashnode_sess_attr(fnode, erl, ISCSI_FLASHNODE_ERL); | |
845 | iscsi_flashnode_sess_attr(fnode, first_burst_len, ISCSI_FLASHNODE_FIRST_BURST); | |
846 | iscsi_flashnode_sess_attr(fnode, def_time2wait, ISCSI_FLASHNODE_DEF_TIME2WAIT); | |
847 | iscsi_flashnode_sess_attr(fnode, def_time2retain, | |
848 | ISCSI_FLASHNODE_DEF_TIME2RETAIN); | |
849 | iscsi_flashnode_sess_attr(fnode, max_outstanding_r2t, ISCSI_FLASHNODE_MAX_R2T); | |
850 | iscsi_flashnode_sess_attr(fnode, isid, ISCSI_FLASHNODE_ISID); | |
851 | iscsi_flashnode_sess_attr(fnode, tsid, ISCSI_FLASHNODE_TSID); | |
852 | iscsi_flashnode_sess_attr(fnode, max_burst_len, ISCSI_FLASHNODE_MAX_BURST); | |
853 | iscsi_flashnode_sess_attr(fnode, def_taskmgmt_tmo, | |
854 | ISCSI_FLASHNODE_DEF_TASKMGMT_TMO); | |
855 | iscsi_flashnode_sess_attr(fnode, targetalias, ISCSI_FLASHNODE_ALIAS); | |
856 | iscsi_flashnode_sess_attr(fnode, targetname, ISCSI_FLASHNODE_NAME); | |
857 | iscsi_flashnode_sess_attr(fnode, tpgt, ISCSI_FLASHNODE_TPGT); | |
858 | iscsi_flashnode_sess_attr(fnode, discovery_parent_idx, | |
859 | ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX); | |
860 | iscsi_flashnode_sess_attr(fnode, discovery_parent_type, | |
861 | ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE); | |
862 | iscsi_flashnode_sess_attr(fnode, chap_in_idx, ISCSI_FLASHNODE_CHAP_IN_IDX); | |
863 | iscsi_flashnode_sess_attr(fnode, chap_out_idx, ISCSI_FLASHNODE_CHAP_OUT_IDX); | |
864 | iscsi_flashnode_sess_attr(fnode, username, ISCSI_FLASHNODE_USERNAME); | |
865 | iscsi_flashnode_sess_attr(fnode, username_in, ISCSI_FLASHNODE_USERNAME_IN); | |
866 | iscsi_flashnode_sess_attr(fnode, password, ISCSI_FLASHNODE_PASSWORD); | |
867 | iscsi_flashnode_sess_attr(fnode, password_in, ISCSI_FLASHNODE_PASSWORD_IN); | |
868 | iscsi_flashnode_sess_attr(fnode, is_boot_target, ISCSI_FLASHNODE_IS_BOOT_TGT); | |
869 | ||
870 | static struct attribute *iscsi_flashnode_sess_attrs[] = { | |
871 | &dev_attr_fnode_auto_snd_tgt_disable.attr, | |
872 | &dev_attr_fnode_discovery_session.attr, | |
873 | &dev_attr_fnode_portal_type.attr, | |
874 | &dev_attr_fnode_entry_enable.attr, | |
875 | &dev_attr_fnode_immediate_data.attr, | |
876 | &dev_attr_fnode_initial_r2t.attr, | |
877 | &dev_attr_fnode_data_seq_in_order.attr, | |
878 | &dev_attr_fnode_data_pdu_in_order.attr, | |
879 | &dev_attr_fnode_chap_auth.attr, | |
880 | &dev_attr_fnode_discovery_logout.attr, | |
881 | &dev_attr_fnode_bidi_chap.attr, | |
882 | &dev_attr_fnode_discovery_auth_optional.attr, | |
883 | &dev_attr_fnode_erl.attr, | |
884 | &dev_attr_fnode_first_burst_len.attr, | |
885 | &dev_attr_fnode_def_time2wait.attr, | |
886 | &dev_attr_fnode_def_time2retain.attr, | |
887 | &dev_attr_fnode_max_outstanding_r2t.attr, | |
888 | &dev_attr_fnode_isid.attr, | |
889 | &dev_attr_fnode_tsid.attr, | |
890 | &dev_attr_fnode_max_burst_len.attr, | |
891 | &dev_attr_fnode_def_taskmgmt_tmo.attr, | |
892 | &dev_attr_fnode_targetalias.attr, | |
893 | &dev_attr_fnode_targetname.attr, | |
894 | &dev_attr_fnode_tpgt.attr, | |
895 | &dev_attr_fnode_discovery_parent_idx.attr, | |
896 | &dev_attr_fnode_discovery_parent_type.attr, | |
897 | &dev_attr_fnode_chap_in_idx.attr, | |
898 | &dev_attr_fnode_chap_out_idx.attr, | |
899 | &dev_attr_fnode_username.attr, | |
900 | &dev_attr_fnode_username_in.attr, | |
901 | &dev_attr_fnode_password.attr, | |
902 | &dev_attr_fnode_password_in.attr, | |
903 | &dev_attr_fnode_is_boot_target.attr, | |
904 | NULL, | |
905 | }; | |
906 | ||
907 | static umode_t iscsi_flashnode_sess_attr_is_visible(struct kobject *kobj, | |
908 | struct attribute *attr, | |
909 | int i) | |
910 | { | |
911 | struct device *dev = container_of(kobj, struct device, kobj); | |
912 | struct iscsi_bus_flash_session *fnode_sess = | |
913 | iscsi_dev_to_flash_session(dev); | |
914 | struct iscsi_transport *t = fnode_sess->transport; | |
915 | int param; | |
916 | ||
917 | if (attr == &dev_attr_fnode_auto_snd_tgt_disable.attr) { | |
918 | param = ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE; | |
919 | } else if (attr == &dev_attr_fnode_discovery_session.attr) { | |
920 | param = ISCSI_FLASHNODE_DISCOVERY_SESS; | |
921 | } else if (attr == &dev_attr_fnode_portal_type.attr) { | |
922 | param = ISCSI_FLASHNODE_PORTAL_TYPE; | |
923 | } else if (attr == &dev_attr_fnode_entry_enable.attr) { | |
924 | param = ISCSI_FLASHNODE_ENTRY_EN; | |
925 | } else if (attr == &dev_attr_fnode_immediate_data.attr) { | |
926 | param = ISCSI_FLASHNODE_IMM_DATA_EN; | |
927 | } else if (attr == &dev_attr_fnode_initial_r2t.attr) { | |
928 | param = ISCSI_FLASHNODE_INITIAL_R2T_EN; | |
929 | } else if (attr == &dev_attr_fnode_data_seq_in_order.attr) { | |
930 | param = ISCSI_FLASHNODE_DATASEQ_INORDER; | |
931 | } else if (attr == &dev_attr_fnode_data_pdu_in_order.attr) { | |
932 | param = ISCSI_FLASHNODE_PDU_INORDER; | |
933 | } else if (attr == &dev_attr_fnode_chap_auth.attr) { | |
934 | param = ISCSI_FLASHNODE_CHAP_AUTH_EN; | |
935 | } else if (attr == &dev_attr_fnode_discovery_logout.attr) { | |
936 | param = ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN; | |
937 | } else if (attr == &dev_attr_fnode_bidi_chap.attr) { | |
938 | param = ISCSI_FLASHNODE_BIDI_CHAP_EN; | |
939 | } else if (attr == &dev_attr_fnode_discovery_auth_optional.attr) { | |
940 | param = ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL; | |
941 | } else if (attr == &dev_attr_fnode_erl.attr) { | |
942 | param = ISCSI_FLASHNODE_ERL; | |
943 | } else if (attr == &dev_attr_fnode_first_burst_len.attr) { | |
944 | param = ISCSI_FLASHNODE_FIRST_BURST; | |
945 | } else if (attr == &dev_attr_fnode_def_time2wait.attr) { | |
946 | param = ISCSI_FLASHNODE_DEF_TIME2WAIT; | |
947 | } else if (attr == &dev_attr_fnode_def_time2retain.attr) { | |
948 | param = ISCSI_FLASHNODE_DEF_TIME2RETAIN; | |
949 | } else if (attr == &dev_attr_fnode_max_outstanding_r2t.attr) { | |
950 | param = ISCSI_FLASHNODE_MAX_R2T; | |
951 | } else if (attr == &dev_attr_fnode_isid.attr) { | |
952 | param = ISCSI_FLASHNODE_ISID; | |
953 | } else if (attr == &dev_attr_fnode_tsid.attr) { | |
954 | param = ISCSI_FLASHNODE_TSID; | |
955 | } else if (attr == &dev_attr_fnode_max_burst_len.attr) { | |
956 | param = ISCSI_FLASHNODE_MAX_BURST; | |
957 | } else if (attr == &dev_attr_fnode_def_taskmgmt_tmo.attr) { | |
958 | param = ISCSI_FLASHNODE_DEF_TASKMGMT_TMO; | |
959 | } else if (attr == &dev_attr_fnode_targetalias.attr) { | |
960 | param = ISCSI_FLASHNODE_ALIAS; | |
961 | } else if (attr == &dev_attr_fnode_targetname.attr) { | |
962 | param = ISCSI_FLASHNODE_NAME; | |
963 | } else if (attr == &dev_attr_fnode_tpgt.attr) { | |
964 | param = ISCSI_FLASHNODE_TPGT; | |
965 | } else if (attr == &dev_attr_fnode_discovery_parent_idx.attr) { | |
966 | param = ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX; | |
967 | } else if (attr == &dev_attr_fnode_discovery_parent_type.attr) { | |
968 | param = ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE; | |
969 | } else if (attr == &dev_attr_fnode_chap_in_idx.attr) { | |
970 | param = ISCSI_FLASHNODE_CHAP_IN_IDX; | |
971 | } else if (attr == &dev_attr_fnode_chap_out_idx.attr) { | |
972 | param = ISCSI_FLASHNODE_CHAP_OUT_IDX; | |
973 | } else if (attr == &dev_attr_fnode_username.attr) { | |
974 | param = ISCSI_FLASHNODE_USERNAME; | |
975 | } else if (attr == &dev_attr_fnode_username_in.attr) { | |
976 | param = ISCSI_FLASHNODE_USERNAME_IN; | |
977 | } else if (attr == &dev_attr_fnode_password.attr) { | |
978 | param = ISCSI_FLASHNODE_PASSWORD; | |
979 | } else if (attr == &dev_attr_fnode_password_in.attr) { | |
980 | param = ISCSI_FLASHNODE_PASSWORD_IN; | |
981 | } else if (attr == &dev_attr_fnode_is_boot_target.attr) { | |
982 | param = ISCSI_FLASHNODE_IS_BOOT_TGT; | |
983 | } else { | |
984 | WARN_ONCE(1, "Invalid flashnode session attr"); | |
985 | return 0; | |
986 | } | |
987 | ||
988 | return t->attr_is_visible(ISCSI_FLASHNODE_PARAM, param); | |
989 | } | |
990 | ||
991 | static struct attribute_group iscsi_flashnode_sess_attr_group = { | |
992 | .attrs = iscsi_flashnode_sess_attrs, | |
993 | .is_visible = iscsi_flashnode_sess_attr_is_visible, | |
994 | }; | |
995 | ||
996 | static const struct attribute_group *iscsi_flashnode_sess_attr_groups[] = { | |
997 | &iscsi_flashnode_sess_attr_group, | |
998 | NULL, | |
999 | }; | |
1000 | ||
1001 | static void iscsi_flashnode_sess_release(struct device *dev) | |
1002 | { | |
1003 | struct iscsi_bus_flash_session *fnode_sess = | |
1004 | iscsi_dev_to_flash_session(dev); | |
1005 | ||
1006 | kfree(fnode_sess->targetname); | |
1007 | kfree(fnode_sess->targetalias); | |
1008 | kfree(fnode_sess->portal_type); | |
1009 | kfree(fnode_sess); | |
1010 | } | |
1011 | ||
7988faf5 | 1012 | static const struct device_type iscsi_flashnode_sess_dev_type = { |
c6a4bb2e AC |
1013 | .name = "iscsi_flashnode_sess_dev_type", |
1014 | .groups = iscsi_flashnode_sess_attr_groups, | |
1015 | .release = iscsi_flashnode_sess_release, | |
1016 | }; | |
1017 | ||
1018 | /* flash node connection attrs show */ | |
1019 | #define iscsi_flashnode_conn_attr_show(type, name, param) \ | |
1020 | static ssize_t \ | |
1021 | show_##type##_##name(struct device *dev, struct device_attribute *attr, \ | |
1022 | char *buf) \ | |
1023 | { \ | |
1024 | struct iscsi_bus_flash_conn *fnode_conn = iscsi_dev_to_flash_conn(dev);\ | |
1025 | struct iscsi_bus_flash_session *fnode_sess = \ | |
1026 | iscsi_flash_conn_to_flash_session(fnode_conn);\ | |
1027 | struct iscsi_transport *t = fnode_conn->transport; \ | |
1028 | return t->get_flashnode_param(fnode_sess, param, buf); \ | |
1029 | } \ | |
1030 | ||
1031 | ||
1032 | #define iscsi_flashnode_conn_attr(type, name, param) \ | |
1033 | iscsi_flashnode_conn_attr_show(type, name, param) \ | |
1034 | static ISCSI_FLASHNODE_ATTR(type, name, S_IRUGO, \ | |
1035 | show_##type##_##name, NULL); | |
1036 | ||
1037 | /* Flash node connection attributes */ | |
1038 | ||
1039 | iscsi_flashnode_conn_attr(fnode, is_fw_assigned_ipv6, | |
1040 | ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6); | |
1041 | iscsi_flashnode_conn_attr(fnode, header_digest, ISCSI_FLASHNODE_HDR_DGST_EN); | |
1042 | iscsi_flashnode_conn_attr(fnode, data_digest, ISCSI_FLASHNODE_DATA_DGST_EN); | |
1043 | iscsi_flashnode_conn_attr(fnode, snack_req, ISCSI_FLASHNODE_SNACK_REQ_EN); | |
1044 | iscsi_flashnode_conn_attr(fnode, tcp_timestamp_stat, | |
1045 | ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT); | |
1046 | iscsi_flashnode_conn_attr(fnode, tcp_nagle_disable, | |
1047 | ISCSI_FLASHNODE_TCP_NAGLE_DISABLE); | |
1048 | iscsi_flashnode_conn_attr(fnode, tcp_wsf_disable, | |
1049 | ISCSI_FLASHNODE_TCP_WSF_DISABLE); | |
1050 | iscsi_flashnode_conn_attr(fnode, tcp_timer_scale, | |
1051 | ISCSI_FLASHNODE_TCP_TIMER_SCALE); | |
1052 | iscsi_flashnode_conn_attr(fnode, tcp_timestamp_enable, | |
1053 | ISCSI_FLASHNODE_TCP_TIMESTAMP_EN); | |
1054 | iscsi_flashnode_conn_attr(fnode, fragment_disable, | |
1055 | ISCSI_FLASHNODE_IP_FRAG_DISABLE); | |
1056 | iscsi_flashnode_conn_attr(fnode, keepalive_tmo, ISCSI_FLASHNODE_KEEPALIVE_TMO); | |
1057 | iscsi_flashnode_conn_attr(fnode, port, ISCSI_FLASHNODE_PORT); | |
1058 | iscsi_flashnode_conn_attr(fnode, ipaddress, ISCSI_FLASHNODE_IPADDR); | |
1059 | iscsi_flashnode_conn_attr(fnode, max_recv_dlength, | |
1060 | ISCSI_FLASHNODE_MAX_RECV_DLENGTH); | |
1061 | iscsi_flashnode_conn_attr(fnode, max_xmit_dlength, | |
1062 | ISCSI_FLASHNODE_MAX_XMIT_DLENGTH); | |
1063 | iscsi_flashnode_conn_attr(fnode, local_port, ISCSI_FLASHNODE_LOCAL_PORT); | |
1064 | iscsi_flashnode_conn_attr(fnode, ipv4_tos, ISCSI_FLASHNODE_IPV4_TOS); | |
1065 | iscsi_flashnode_conn_attr(fnode, ipv6_traffic_class, ISCSI_FLASHNODE_IPV6_TC); | |
1066 | iscsi_flashnode_conn_attr(fnode, ipv6_flow_label, | |
1067 | ISCSI_FLASHNODE_IPV6_FLOW_LABEL); | |
1068 | iscsi_flashnode_conn_attr(fnode, redirect_ipaddr, | |
1069 | ISCSI_FLASHNODE_REDIRECT_IPADDR); | |
1070 | iscsi_flashnode_conn_attr(fnode, max_segment_size, | |
1071 | ISCSI_FLASHNODE_MAX_SEGMENT_SIZE); | |
1072 | iscsi_flashnode_conn_attr(fnode, link_local_ipv6, | |
1073 | ISCSI_FLASHNODE_LINK_LOCAL_IPV6); | |
1074 | iscsi_flashnode_conn_attr(fnode, tcp_xmit_wsf, ISCSI_FLASHNODE_TCP_XMIT_WSF); | |
1075 | iscsi_flashnode_conn_attr(fnode, tcp_recv_wsf, ISCSI_FLASHNODE_TCP_RECV_WSF); | |
1076 | iscsi_flashnode_conn_attr(fnode, statsn, ISCSI_FLASHNODE_STATSN); | |
1077 | iscsi_flashnode_conn_attr(fnode, exp_statsn, ISCSI_FLASHNODE_EXP_STATSN); | |
1078 | ||
1079 | static struct attribute *iscsi_flashnode_conn_attrs[] = { | |
1080 | &dev_attr_fnode_is_fw_assigned_ipv6.attr, | |
1081 | &dev_attr_fnode_header_digest.attr, | |
1082 | &dev_attr_fnode_data_digest.attr, | |
1083 | &dev_attr_fnode_snack_req.attr, | |
1084 | &dev_attr_fnode_tcp_timestamp_stat.attr, | |
1085 | &dev_attr_fnode_tcp_nagle_disable.attr, | |
1086 | &dev_attr_fnode_tcp_wsf_disable.attr, | |
1087 | &dev_attr_fnode_tcp_timer_scale.attr, | |
1088 | &dev_attr_fnode_tcp_timestamp_enable.attr, | |
1089 | &dev_attr_fnode_fragment_disable.attr, | |
1090 | &dev_attr_fnode_max_recv_dlength.attr, | |
1091 | &dev_attr_fnode_max_xmit_dlength.attr, | |
1092 | &dev_attr_fnode_keepalive_tmo.attr, | |
1093 | &dev_attr_fnode_port.attr, | |
1094 | &dev_attr_fnode_ipaddress.attr, | |
1095 | &dev_attr_fnode_redirect_ipaddr.attr, | |
1096 | &dev_attr_fnode_max_segment_size.attr, | |
1097 | &dev_attr_fnode_local_port.attr, | |
1098 | &dev_attr_fnode_ipv4_tos.attr, | |
1099 | &dev_attr_fnode_ipv6_traffic_class.attr, | |
1100 | &dev_attr_fnode_ipv6_flow_label.attr, | |
1101 | &dev_attr_fnode_link_local_ipv6.attr, | |
1102 | &dev_attr_fnode_tcp_xmit_wsf.attr, | |
1103 | &dev_attr_fnode_tcp_recv_wsf.attr, | |
1104 | &dev_attr_fnode_statsn.attr, | |
1105 | &dev_attr_fnode_exp_statsn.attr, | |
1106 | NULL, | |
1107 | }; | |
1108 | ||
1109 | static umode_t iscsi_flashnode_conn_attr_is_visible(struct kobject *kobj, | |
1110 | struct attribute *attr, | |
1111 | int i) | |
1112 | { | |
1113 | struct device *dev = container_of(kobj, struct device, kobj); | |
1114 | struct iscsi_bus_flash_conn *fnode_conn = iscsi_dev_to_flash_conn(dev); | |
1115 | struct iscsi_transport *t = fnode_conn->transport; | |
1116 | int param; | |
1117 | ||
1118 | if (attr == &dev_attr_fnode_is_fw_assigned_ipv6.attr) { | |
1119 | param = ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6; | |
1120 | } else if (attr == &dev_attr_fnode_header_digest.attr) { | |
1121 | param = ISCSI_FLASHNODE_HDR_DGST_EN; | |
1122 | } else if (attr == &dev_attr_fnode_data_digest.attr) { | |
1123 | param = ISCSI_FLASHNODE_DATA_DGST_EN; | |
1124 | } else if (attr == &dev_attr_fnode_snack_req.attr) { | |
1125 | param = ISCSI_FLASHNODE_SNACK_REQ_EN; | |
1126 | } else if (attr == &dev_attr_fnode_tcp_timestamp_stat.attr) { | |
1127 | param = ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT; | |
1128 | } else if (attr == &dev_attr_fnode_tcp_nagle_disable.attr) { | |
1129 | param = ISCSI_FLASHNODE_TCP_NAGLE_DISABLE; | |
1130 | } else if (attr == &dev_attr_fnode_tcp_wsf_disable.attr) { | |
1131 | param = ISCSI_FLASHNODE_TCP_WSF_DISABLE; | |
1132 | } else if (attr == &dev_attr_fnode_tcp_timer_scale.attr) { | |
1133 | param = ISCSI_FLASHNODE_TCP_TIMER_SCALE; | |
1134 | } else if (attr == &dev_attr_fnode_tcp_timestamp_enable.attr) { | |
1135 | param = ISCSI_FLASHNODE_TCP_TIMESTAMP_EN; | |
1136 | } else if (attr == &dev_attr_fnode_fragment_disable.attr) { | |
1137 | param = ISCSI_FLASHNODE_IP_FRAG_DISABLE; | |
1138 | } else if (attr == &dev_attr_fnode_max_recv_dlength.attr) { | |
1139 | param = ISCSI_FLASHNODE_MAX_RECV_DLENGTH; | |
1140 | } else if (attr == &dev_attr_fnode_max_xmit_dlength.attr) { | |
1141 | param = ISCSI_FLASHNODE_MAX_XMIT_DLENGTH; | |
1142 | } else if (attr == &dev_attr_fnode_keepalive_tmo.attr) { | |
1143 | param = ISCSI_FLASHNODE_KEEPALIVE_TMO; | |
1144 | } else if (attr == &dev_attr_fnode_port.attr) { | |
1145 | param = ISCSI_FLASHNODE_PORT; | |
1146 | } else if (attr == &dev_attr_fnode_ipaddress.attr) { | |
1147 | param = ISCSI_FLASHNODE_IPADDR; | |
1148 | } else if (attr == &dev_attr_fnode_redirect_ipaddr.attr) { | |
1149 | param = ISCSI_FLASHNODE_REDIRECT_IPADDR; | |
1150 | } else if (attr == &dev_attr_fnode_max_segment_size.attr) { | |
1151 | param = ISCSI_FLASHNODE_MAX_SEGMENT_SIZE; | |
1152 | } else if (attr == &dev_attr_fnode_local_port.attr) { | |
1153 | param = ISCSI_FLASHNODE_LOCAL_PORT; | |
1154 | } else if (attr == &dev_attr_fnode_ipv4_tos.attr) { | |
1155 | param = ISCSI_FLASHNODE_IPV4_TOS; | |
1156 | } else if (attr == &dev_attr_fnode_ipv6_traffic_class.attr) { | |
1157 | param = ISCSI_FLASHNODE_IPV6_TC; | |
1158 | } else if (attr == &dev_attr_fnode_ipv6_flow_label.attr) { | |
1159 | param = ISCSI_FLASHNODE_IPV6_FLOW_LABEL; | |
1160 | } else if (attr == &dev_attr_fnode_link_local_ipv6.attr) { | |
1161 | param = ISCSI_FLASHNODE_LINK_LOCAL_IPV6; | |
1162 | } else if (attr == &dev_attr_fnode_tcp_xmit_wsf.attr) { | |
1163 | param = ISCSI_FLASHNODE_TCP_XMIT_WSF; | |
1164 | } else if (attr == &dev_attr_fnode_tcp_recv_wsf.attr) { | |
1165 | param = ISCSI_FLASHNODE_TCP_RECV_WSF; | |
1166 | } else if (attr == &dev_attr_fnode_statsn.attr) { | |
1167 | param = ISCSI_FLASHNODE_STATSN; | |
1168 | } else if (attr == &dev_attr_fnode_exp_statsn.attr) { | |
1169 | param = ISCSI_FLASHNODE_EXP_STATSN; | |
1170 | } else { | |
1171 | WARN_ONCE(1, "Invalid flashnode connection attr"); | |
1172 | return 0; | |
1173 | } | |
1174 | ||
1175 | return t->attr_is_visible(ISCSI_FLASHNODE_PARAM, param); | |
1176 | } | |
1177 | ||
1178 | static struct attribute_group iscsi_flashnode_conn_attr_group = { | |
1179 | .attrs = iscsi_flashnode_conn_attrs, | |
1180 | .is_visible = iscsi_flashnode_conn_attr_is_visible, | |
1181 | }; | |
1182 | ||
1183 | static const struct attribute_group *iscsi_flashnode_conn_attr_groups[] = { | |
1184 | &iscsi_flashnode_conn_attr_group, | |
1185 | NULL, | |
1186 | }; | |
1187 | ||
1188 | static void iscsi_flashnode_conn_release(struct device *dev) | |
1189 | { | |
1190 | struct iscsi_bus_flash_conn *fnode_conn = iscsi_dev_to_flash_conn(dev); | |
1191 | ||
1192 | kfree(fnode_conn->ipaddress); | |
1193 | kfree(fnode_conn->redirect_ipaddr); | |
1194 | kfree(fnode_conn->link_local_ipv6_addr); | |
1195 | kfree(fnode_conn); | |
1196 | } | |
1197 | ||
7988faf5 | 1198 | static const struct device_type iscsi_flashnode_conn_dev_type = { |
c6a4bb2e AC |
1199 | .name = "iscsi_flashnode_conn_dev_type", |
1200 | .groups = iscsi_flashnode_conn_attr_groups, | |
1201 | .release = iscsi_flashnode_conn_release, | |
1202 | }; | |
1203 | ||
4c1340af | 1204 | static struct bus_type iscsi_flashnode_bus; |
c6a4bb2e AC |
1205 | |
1206 | int iscsi_flashnode_bus_match(struct device *dev, | |
1207 | struct device_driver *drv) | |
1208 | { | |
1209 | if (dev->bus == &iscsi_flashnode_bus) | |
1210 | return 1; | |
1211 | return 0; | |
1212 | } | |
1213 | EXPORT_SYMBOL_GPL(iscsi_flashnode_bus_match); | |
1214 | ||
4c1340af | 1215 | static struct bus_type iscsi_flashnode_bus = { |
c6a4bb2e AC |
1216 | .name = "iscsi_flashnode", |
1217 | .match = &iscsi_flashnode_bus_match, | |
1218 | }; | |
1219 | ||
1220 | /** | |
1221 | * iscsi_create_flashnode_sess - Add flashnode session entry in sysfs | |
1222 | * @shost: pointer to host data | |
1223 | * @index: index of flashnode to add in sysfs | |
1224 | * @transport: pointer to transport data | |
1225 | * @dd_size: total size to allocate | |
1226 | * | |
1227 | * Adds a sysfs entry for the flashnode session attributes | |
1228 | * | |
1229 | * Returns: | |
e227867f | 1230 | * pointer to allocated flashnode sess on success |
c6a4bb2e AC |
1231 | * %NULL on failure |
1232 | */ | |
1233 | struct iscsi_bus_flash_session * | |
1234 | iscsi_create_flashnode_sess(struct Scsi_Host *shost, int index, | |
1235 | struct iscsi_transport *transport, | |
1236 | int dd_size) | |
1237 | { | |
1238 | struct iscsi_bus_flash_session *fnode_sess; | |
1239 | int err; | |
1240 | ||
1241 | fnode_sess = kzalloc(sizeof(*fnode_sess) + dd_size, GFP_KERNEL); | |
1242 | if (!fnode_sess) | |
1243 | return NULL; | |
1244 | ||
1245 | fnode_sess->transport = transport; | |
1246 | fnode_sess->target_id = index; | |
1247 | fnode_sess->dev.type = &iscsi_flashnode_sess_dev_type; | |
1248 | fnode_sess->dev.bus = &iscsi_flashnode_bus; | |
1249 | fnode_sess->dev.parent = &shost->shost_gendev; | |
1250 | dev_set_name(&fnode_sess->dev, "flashnode_sess-%u:%u", | |
1251 | shost->host_no, index); | |
1252 | ||
1253 | err = device_register(&fnode_sess->dev); | |
1254 | if (err) | |
f014165f | 1255 | goto put_dev; |
c6a4bb2e AC |
1256 | |
1257 | if (dd_size) | |
1258 | fnode_sess->dd_data = &fnode_sess[1]; | |
1259 | ||
1260 | return fnode_sess; | |
1261 | ||
f014165f ZG |
1262 | put_dev: |
1263 | put_device(&fnode_sess->dev); | |
c6a4bb2e AC |
1264 | return NULL; |
1265 | } | |
1266 | EXPORT_SYMBOL_GPL(iscsi_create_flashnode_sess); | |
1267 | ||
1268 | /** | |
1269 | * iscsi_create_flashnode_conn - Add flashnode conn entry in sysfs | |
1270 | * @shost: pointer to host data | |
1271 | * @fnode_sess: pointer to the parent flashnode session entry | |
1272 | * @transport: pointer to transport data | |
1273 | * @dd_size: total size to allocate | |
1274 | * | |
1275 | * Adds a sysfs entry for the flashnode connection attributes | |
1276 | * | |
1277 | * Returns: | |
1278 | * pointer to allocated flashnode conn on success | |
1279 | * %NULL on failure | |
1280 | */ | |
1281 | struct iscsi_bus_flash_conn * | |
1282 | iscsi_create_flashnode_conn(struct Scsi_Host *shost, | |
1283 | struct iscsi_bus_flash_session *fnode_sess, | |
1284 | struct iscsi_transport *transport, | |
1285 | int dd_size) | |
1286 | { | |
1287 | struct iscsi_bus_flash_conn *fnode_conn; | |
1288 | int err; | |
1289 | ||
1290 | fnode_conn = kzalloc(sizeof(*fnode_conn) + dd_size, GFP_KERNEL); | |
1291 | if (!fnode_conn) | |
1292 | return NULL; | |
1293 | ||
1294 | fnode_conn->transport = transport; | |
1295 | fnode_conn->dev.type = &iscsi_flashnode_conn_dev_type; | |
1296 | fnode_conn->dev.bus = &iscsi_flashnode_bus; | |
1297 | fnode_conn->dev.parent = &fnode_sess->dev; | |
1298 | dev_set_name(&fnode_conn->dev, "flashnode_conn-%u:%u:0", | |
1299 | shost->host_no, fnode_sess->target_id); | |
1300 | ||
1301 | err = device_register(&fnode_conn->dev); | |
1302 | if (err) | |
f014165f | 1303 | goto put_dev; |
c6a4bb2e AC |
1304 | |
1305 | if (dd_size) | |
1306 | fnode_conn->dd_data = &fnode_conn[1]; | |
1307 | ||
1308 | return fnode_conn; | |
1309 | ||
f014165f ZG |
1310 | put_dev: |
1311 | put_device(&fnode_conn->dev); | |
c6a4bb2e AC |
1312 | return NULL; |
1313 | } | |
1314 | EXPORT_SYMBOL_GPL(iscsi_create_flashnode_conn); | |
1315 | ||
1316 | /** | |
1317 | * iscsi_is_flashnode_conn_dev - verify passed device is to be flashnode conn | |
1318 | * @dev: device to verify | |
1319 | * @data: pointer to data containing value to use for verification | |
1320 | * | |
1321 | * Verifies if the passed device is flashnode conn device | |
1322 | * | |
1323 | * Returns: | |
1324 | * 1 on success | |
1325 | * 0 on failure | |
1326 | */ | |
7a15fdfa | 1327 | static int iscsi_is_flashnode_conn_dev(struct device *dev, void *data) |
c6a4bb2e AC |
1328 | { |
1329 | return dev->bus == &iscsi_flashnode_bus; | |
1330 | } | |
c6a4bb2e AC |
1331 | |
1332 | static int iscsi_destroy_flashnode_conn(struct iscsi_bus_flash_conn *fnode_conn) | |
1333 | { | |
1334 | device_unregister(&fnode_conn->dev); | |
1335 | return 0; | |
1336 | } | |
1337 | ||
1338 | static int flashnode_match_index(struct device *dev, void *data) | |
1339 | { | |
1340 | struct iscsi_bus_flash_session *fnode_sess = NULL; | |
1341 | int ret = 0; | |
1342 | ||
1343 | if (!iscsi_flashnode_bus_match(dev, NULL)) | |
1344 | goto exit_match_index; | |
1345 | ||
1346 | fnode_sess = iscsi_dev_to_flash_session(dev); | |
1347 | ret = (fnode_sess->target_id == *((int *)data)) ? 1 : 0; | |
1348 | ||
1349 | exit_match_index: | |
1350 | return ret; | |
1351 | } | |
1352 | ||
1353 | /** | |
1354 | * iscsi_get_flashnode_by_index -finds flashnode session entry by index | |
1355 | * @shost: pointer to host data | |
8526cb11 | 1356 | * @idx: index to match |
c6a4bb2e AC |
1357 | * |
1358 | * Finds the flashnode session object for the passed index | |
1359 | * | |
1360 | * Returns: | |
1361 | * pointer to found flashnode session object on success | |
1362 | * %NULL on failure | |
1363 | */ | |
1364 | static struct iscsi_bus_flash_session * | |
8526cb11 | 1365 | iscsi_get_flashnode_by_index(struct Scsi_Host *shost, uint32_t idx) |
c6a4bb2e AC |
1366 | { |
1367 | struct iscsi_bus_flash_session *fnode_sess = NULL; | |
1368 | struct device *dev; | |
1369 | ||
8526cb11 MC |
1370 | dev = device_find_child(&shost->shost_gendev, &idx, |
1371 | flashnode_match_index); | |
c6a4bb2e AC |
1372 | if (dev) |
1373 | fnode_sess = iscsi_dev_to_flash_session(dev); | |
1374 | ||
1375 | return fnode_sess; | |
1376 | } | |
1377 | ||
1378 | /** | |
1379 | * iscsi_find_flashnode_sess - finds flashnode session entry | |
1380 | * @shost: pointer to host data | |
1381 | * @data: pointer to data containing value to use for comparison | |
1382 | * @fn: function pointer that does actual comparison | |
1383 | * | |
1384 | * Finds the flashnode session object comparing the data passed using logic | |
1385 | * defined in passed function pointer | |
1386 | * | |
1387 | * Returns: | |
1388 | * pointer to found flashnode session device object on success | |
1389 | * %NULL on failure | |
1390 | */ | |
1391 | struct device * | |
1392 | iscsi_find_flashnode_sess(struct Scsi_Host *shost, void *data, | |
1393 | int (*fn)(struct device *dev, void *data)) | |
1394 | { | |
8526cb11 | 1395 | return device_find_child(&shost->shost_gendev, data, fn); |
c6a4bb2e AC |
1396 | } |
1397 | EXPORT_SYMBOL_GPL(iscsi_find_flashnode_sess); | |
1398 | ||
1399 | /** | |
1400 | * iscsi_find_flashnode_conn - finds flashnode connection entry | |
1401 | * @fnode_sess: pointer to parent flashnode session entry | |
c6a4bb2e AC |
1402 | * |
1403 | * Finds the flashnode connection object comparing the data passed using logic | |
1404 | * defined in passed function pointer | |
1405 | * | |
1406 | * Returns: | |
1407 | * pointer to found flashnode connection device object on success | |
1408 | * %NULL on failure | |
1409 | */ | |
1410 | struct device * | |
8526cb11 | 1411 | iscsi_find_flashnode_conn(struct iscsi_bus_flash_session *fnode_sess) |
c6a4bb2e | 1412 | { |
8526cb11 MC |
1413 | return device_find_child(&fnode_sess->dev, NULL, |
1414 | iscsi_is_flashnode_conn_dev); | |
c6a4bb2e AC |
1415 | } |
1416 | EXPORT_SYMBOL_GPL(iscsi_find_flashnode_conn); | |
1417 | ||
1418 | static int iscsi_iter_destroy_flashnode_conn_fn(struct device *dev, void *data) | |
1419 | { | |
1420 | if (!iscsi_is_flashnode_conn_dev(dev, NULL)) | |
1421 | return 0; | |
1422 | ||
1423 | return iscsi_destroy_flashnode_conn(iscsi_dev_to_flash_conn(dev)); | |
1424 | } | |
1425 | ||
1426 | /** | |
e227867f | 1427 | * iscsi_destroy_flashnode_sess - destroy flashnode session entry |
c6a4bb2e AC |
1428 | * @fnode_sess: pointer to flashnode session entry to be destroyed |
1429 | * | |
1430 | * Deletes the flashnode session entry and all children flashnode connection | |
1431 | * entries from sysfs | |
1432 | */ | |
1433 | void iscsi_destroy_flashnode_sess(struct iscsi_bus_flash_session *fnode_sess) | |
1434 | { | |
1435 | int err; | |
1436 | ||
1437 | err = device_for_each_child(&fnode_sess->dev, NULL, | |
1438 | iscsi_iter_destroy_flashnode_conn_fn); | |
1439 | if (err) | |
1440 | pr_err("Could not delete all connections for %s. Error %d.\n", | |
1441 | fnode_sess->dev.kobj.name, err); | |
1442 | ||
1443 | device_unregister(&fnode_sess->dev); | |
1444 | } | |
1445 | EXPORT_SYMBOL_GPL(iscsi_destroy_flashnode_sess); | |
1446 | ||
1447 | static int iscsi_iter_destroy_flashnode_fn(struct device *dev, void *data) | |
1448 | { | |
1449 | if (!iscsi_flashnode_bus_match(dev, NULL)) | |
1450 | return 0; | |
1451 | ||
1452 | iscsi_destroy_flashnode_sess(iscsi_dev_to_flash_session(dev)); | |
1453 | return 0; | |
1454 | } | |
1455 | ||
1456 | /** | |
e227867f | 1457 | * iscsi_destroy_all_flashnode - destroy all flashnode session entries |
c6a4bb2e AC |
1458 | * @shost: pointer to host data |
1459 | * | |
1460 | * Destroys all the flashnode session entries and all corresponding children | |
1461 | * flashnode connection entries from sysfs | |
1462 | */ | |
1463 | void iscsi_destroy_all_flashnode(struct Scsi_Host *shost) | |
1464 | { | |
1465 | device_for_each_child(&shost->shost_gendev, NULL, | |
1466 | iscsi_iter_destroy_flashnode_fn); | |
1467 | } | |
1468 | EXPORT_SYMBOL_GPL(iscsi_destroy_all_flashnode); | |
1469 | ||
90eeb01a MC |
1470 | /* |
1471 | * BSG support | |
1472 | */ | |
1473 | /** | |
1474 | * iscsi_bsg_host_dispatch - Dispatch command to LLD. | |
1475 | * @job: bsg job to be processed | |
1476 | */ | |
1477 | static int iscsi_bsg_host_dispatch(struct bsg_job *job) | |
1478 | { | |
1479 | struct Scsi_Host *shost = iscsi_job_to_shost(job); | |
1480 | struct iscsi_bsg_request *req = job->request; | |
1481 | struct iscsi_bsg_reply *reply = job->reply; | |
1482 | struct iscsi_internal *i = to_iscsi_internal(shost->transportt); | |
1483 | int cmdlen = sizeof(uint32_t); /* start with length of msgcode */ | |
1484 | int ret; | |
1485 | ||
1486 | /* check if we have the msgcode value at least */ | |
1487 | if (job->request_len < sizeof(uint32_t)) { | |
1488 | ret = -ENOMSG; | |
1489 | goto fail_host_msg; | |
1490 | } | |
1491 | ||
1492 | /* Validate the host command */ | |
1493 | switch (req->msgcode) { | |
1494 | case ISCSI_BSG_HST_VENDOR: | |
1495 | cmdlen += sizeof(struct iscsi_bsg_host_vendor); | |
1496 | if ((shost->hostt->vendor_id == 0L) || | |
1497 | (req->rqst_data.h_vendor.vendor_id != | |
1498 | shost->hostt->vendor_id)) { | |
1499 | ret = -ESRCH; | |
1500 | goto fail_host_msg; | |
1501 | } | |
1502 | break; | |
1503 | default: | |
1504 | ret = -EBADR; | |
1505 | goto fail_host_msg; | |
1506 | } | |
1507 | ||
1508 | /* check if we really have all the request data needed */ | |
1509 | if (job->request_len < cmdlen) { | |
1510 | ret = -ENOMSG; | |
1511 | goto fail_host_msg; | |
1512 | } | |
1513 | ||
1514 | ret = i->iscsi_transport->bsg_request(job); | |
1515 | if (!ret) | |
1516 | return 0; | |
1517 | ||
1518 | fail_host_msg: | |
1519 | /* return the errno failure code as the only status */ | |
1520 | BUG_ON(job->reply_len < sizeof(uint32_t)); | |
1521 | reply->reply_payload_rcv_len = 0; | |
1522 | reply->result = ret; | |
1523 | job->reply_len = sizeof(uint32_t); | |
1524 | bsg_job_done(job, ret, 0); | |
1525 | return 0; | |
1526 | } | |
1527 | ||
1528 | /** | |
1529 | * iscsi_bsg_host_add - Create and add the bsg hooks to receive requests | |
1530 | * @shost: shost for iscsi_host | |
eae627e4 | 1531 | * @ihost: iscsi_cls_host adding the structures to |
90eeb01a MC |
1532 | */ |
1533 | static int | |
1534 | iscsi_bsg_host_add(struct Scsi_Host *shost, struct iscsi_cls_host *ihost) | |
1535 | { | |
1536 | struct device *dev = &shost->shost_gendev; | |
1537 | struct iscsi_internal *i = to_iscsi_internal(shost->transportt); | |
1538 | struct request_queue *q; | |
1539 | char bsg_name[20]; | |
90eeb01a MC |
1540 | |
1541 | if (!i->iscsi_transport->bsg_request) | |
1542 | return -ENOTSUPP; | |
1543 | ||
1544 | snprintf(bsg_name, sizeof(bsg_name), "iscsi_host%d", shost->host_no); | |
aae3b069 | 1545 | q = bsg_setup_queue(dev, bsg_name, iscsi_bsg_host_dispatch, NULL, 0); |
8ae94eb6 | 1546 | if (IS_ERR(q)) { |
90eeb01a MC |
1547 | shost_printk(KERN_ERR, shost, "bsg interface failed to " |
1548 | "initialize - no request queue\n"); | |
8ae94eb6 | 1549 | return PTR_ERR(q); |
90eeb01a | 1550 | } |
8ae94eb6 | 1551 | __scsi_init_queue(shost, q); |
90eeb01a MC |
1552 | |
1553 | ihost->bsg_q = q; | |
1554 | return 0; | |
1555 | } | |
1556 | ||
30a6c652 | 1557 | static int iscsi_setup_host(struct transport_container *tc, struct device *dev, |
ee959b00 | 1558 | struct device *cdev) |
30a6c652 MC |
1559 | { |
1560 | struct Scsi_Host *shost = dev_to_shost(dev); | |
32c6e1b9 | 1561 | struct iscsi_cls_host *ihost = shost->shost_data; |
30a6c652 MC |
1562 | |
1563 | memset(ihost, 0, sizeof(*ihost)); | |
7970634b | 1564 | mutex_init(&ihost->mutex); |
90eeb01a MC |
1565 | |
1566 | iscsi_bsg_host_add(shost, ihost); | |
1567 | /* ignore any bsg add error - we just can't do sgio */ | |
1568 | ||
1569 | return 0; | |
1570 | } | |
1571 | ||
1572 | static int iscsi_remove_host(struct transport_container *tc, | |
1573 | struct device *dev, struct device *cdev) | |
1574 | { | |
1575 | struct Scsi_Host *shost = dev_to_shost(dev); | |
1576 | struct iscsi_cls_host *ihost = shost->shost_data; | |
1577 | ||
5e28b8d8 | 1578 | bsg_remove_queue(ihost->bsg_q); |
30a6c652 MC |
1579 | return 0; |
1580 | } | |
1581 | ||
1582 | static DECLARE_TRANSPORT_CLASS(iscsi_host_class, | |
1583 | "iscsi_host", | |
1584 | iscsi_setup_host, | |
90eeb01a | 1585 | iscsi_remove_host, |
30a6c652 MC |
1586 | NULL); |
1587 | ||
0896b752 AA |
1588 | static DECLARE_TRANSPORT_CLASS(iscsi_session_class, |
1589 | "iscsi_session", | |
1da177e4 LT |
1590 | NULL, |
1591 | NULL, | |
1592 | NULL); | |
1593 | ||
0896b752 AA |
1594 | static DECLARE_TRANSPORT_CLASS(iscsi_connection_class, |
1595 | "iscsi_connection", | |
1da177e4 LT |
1596 | NULL, |
1597 | NULL, | |
1598 | NULL); | |
0896b752 AA |
1599 | |
1600 | static struct sock *nls; | |
0b950672 | 1601 | static DEFINE_MUTEX(rx_queue_mutex); |
0896b752 | 1602 | |
7b7232f3 MC |
1603 | static LIST_HEAD(sesslist); |
1604 | static DEFINE_SPINLOCK(sesslock); | |
7b8631b5 | 1605 | static LIST_HEAD(connlist); |
0ab71045 | 1606 | static LIST_HEAD(connlist_err); |
7b8631b5 | 1607 | static DEFINE_SPINLOCK(connlock); |
0896b752 | 1608 | |
b5c7a12d MC |
1609 | static uint32_t iscsi_conn_get_sid(struct iscsi_cls_conn *conn) |
1610 | { | |
1611 | struct iscsi_cls_session *sess = iscsi_dev_to_session(conn->dev.parent); | |
1612 | return sess->sid; | |
1613 | } | |
1614 | ||
1615 | /* | |
1616 | * Returns the matching session to a given sid | |
1617 | */ | |
1618 | static struct iscsi_cls_session *iscsi_session_lookup(uint32_t sid) | |
7b7232f3 MC |
1619 | { |
1620 | unsigned long flags; | |
1621 | struct iscsi_cls_session *sess; | |
1622 | ||
1623 | spin_lock_irqsave(&sesslock, flags); | |
1624 | list_for_each_entry(sess, &sesslist, sess_list) { | |
b5c7a12d | 1625 | if (sess->sid == sid) { |
7b7232f3 MC |
1626 | spin_unlock_irqrestore(&sesslock, flags); |
1627 | return sess; | |
1628 | } | |
1629 | } | |
1630 | spin_unlock_irqrestore(&sesslock, flags); | |
1631 | return NULL; | |
1632 | } | |
1633 | ||
b5c7a12d MC |
1634 | /* |
1635 | * Returns the matching connection to a given sid / cid tuple | |
1636 | */ | |
1637 | static struct iscsi_cls_conn *iscsi_conn_lookup(uint32_t sid, uint32_t cid) | |
7b7232f3 MC |
1638 | { |
1639 | unsigned long flags; | |
1640 | struct iscsi_cls_conn *conn; | |
1641 | ||
1642 | spin_lock_irqsave(&connlock, flags); | |
1643 | list_for_each_entry(conn, &connlist, conn_list) { | |
b5c7a12d | 1644 | if ((conn->cid == cid) && (iscsi_conn_get_sid(conn) == sid)) { |
7b7232f3 MC |
1645 | spin_unlock_irqrestore(&connlock, flags); |
1646 | return conn; | |
1647 | } | |
1648 | } | |
1649 | spin_unlock_irqrestore(&connlock, flags); | |
1650 | return NULL; | |
1651 | } | |
1652 | ||
7b8631b5 MC |
1653 | /* |
1654 | * The following functions can be used by LLDs that allocate | |
1655 | * their own scsi_hosts or by software iscsi LLDs | |
1656 | */ | |
6eabafbe MC |
1657 | static struct { |
1658 | int value; | |
1659 | char *name; | |
1660 | } iscsi_session_state_names[] = { | |
1661 | { ISCSI_SESSION_LOGGED_IN, "LOGGED_IN" }, | |
1662 | { ISCSI_SESSION_FAILED, "FAILED" }, | |
1663 | { ISCSI_SESSION_FREE, "FREE" }, | |
1664 | }; | |
1665 | ||
3b0f208a | 1666 | static const char *iscsi_session_state_name(int state) |
6eabafbe MC |
1667 | { |
1668 | int i; | |
1669 | char *name = NULL; | |
1670 | ||
1671 | for (i = 0; i < ARRAY_SIZE(iscsi_session_state_names); i++) { | |
1672 | if (iscsi_session_state_names[i].value == state) { | |
1673 | name = iscsi_session_state_names[i].name; | |
1674 | break; | |
1675 | } | |
1676 | } | |
1677 | return name; | |
1678 | } | |
1679 | ||
a3be19b9 WH |
1680 | static char *iscsi_session_target_state_name[] = { |
1681 | [ISCSI_SESSION_TARGET_UNBOUND] = "UNBOUND", | |
1682 | [ISCSI_SESSION_TARGET_ALLOCATED] = "ALLOCATED", | |
1683 | [ISCSI_SESSION_TARGET_SCANNED] = "SCANNED", | |
1684 | [ISCSI_SESSION_TARGET_UNBINDING] = "UNBINDING", | |
1685 | }; | |
1686 | ||
6eabafbe MC |
1687 | int iscsi_session_chkready(struct iscsi_cls_session *session) |
1688 | { | |
6eabafbe MC |
1689 | int err; |
1690 | ||
6eabafbe MC |
1691 | switch (session->state) { |
1692 | case ISCSI_SESSION_LOGGED_IN: | |
1693 | err = 0; | |
1694 | break; | |
1695 | case ISCSI_SESSION_FAILED: | |
9a1a69a1 | 1696 | err = DID_IMM_RETRY << 16; |
6eabafbe MC |
1697 | break; |
1698 | case ISCSI_SESSION_FREE: | |
56d7fcfa | 1699 | err = DID_TRANSPORT_FAILFAST << 16; |
6eabafbe MC |
1700 | break; |
1701 | default: | |
1702 | err = DID_NO_CONNECT << 16; | |
1703 | break; | |
1704 | } | |
6eabafbe MC |
1705 | return err; |
1706 | } | |
1707 | EXPORT_SYMBOL_GPL(iscsi_session_chkready); | |
1708 | ||
17fa575e MR |
1709 | int iscsi_is_session_online(struct iscsi_cls_session *session) |
1710 | { | |
1711 | unsigned long flags; | |
1712 | int ret = 0; | |
1713 | ||
1714 | spin_lock_irqsave(&session->lock, flags); | |
1715 | if (session->state == ISCSI_SESSION_LOGGED_IN) | |
1716 | ret = 1; | |
1717 | spin_unlock_irqrestore(&session->lock, flags); | |
1718 | return ret; | |
1719 | } | |
1720 | EXPORT_SYMBOL_GPL(iscsi_is_session_online); | |
1721 | ||
7b8631b5 MC |
1722 | static void iscsi_session_release(struct device *dev) |
1723 | { | |
1724 | struct iscsi_cls_session *session = iscsi_dev_to_session(dev); | |
7b8631b5 | 1725 | struct Scsi_Host *shost; |
0896b752 | 1726 | |
7b8631b5 MC |
1727 | shost = iscsi_session_to_shost(session); |
1728 | scsi_host_put(shost); | |
632248aa | 1729 | ISCSI_DBG_TRANS_SESSION(session, "Completing session release\n"); |
7b8631b5 | 1730 | kfree(session); |
7b8631b5 | 1731 | } |
0896b752 | 1732 | |
6260a5d2 | 1733 | int iscsi_is_session_dev(const struct device *dev) |
7b8631b5 MC |
1734 | { |
1735 | return dev->release == iscsi_session_release; | |
1736 | } | |
6260a5d2 | 1737 | EXPORT_SYMBOL_GPL(iscsi_is_session_dev); |
0896b752 | 1738 | |
a4804cd6 MC |
1739 | static int iscsi_iter_session_fn(struct device *dev, void *data) |
1740 | { | |
1741 | void (* fn) (struct iscsi_cls_session *) = data; | |
1742 | ||
1743 | if (!iscsi_is_session_dev(dev)) | |
1744 | return 0; | |
1745 | fn(iscsi_dev_to_session(dev)); | |
1746 | return 0; | |
1747 | } | |
1748 | ||
1749 | void iscsi_host_for_each_session(struct Scsi_Host *shost, | |
1750 | void (*fn)(struct iscsi_cls_session *)) | |
1751 | { | |
1752 | device_for_each_child(&shost->shost_gendev, fn, | |
1753 | iscsi_iter_session_fn); | |
1754 | } | |
1755 | EXPORT_SYMBOL_GPL(iscsi_host_for_each_session); | |
1756 | ||
7970634b MC |
1757 | struct iscsi_scan_data { |
1758 | unsigned int channel; | |
1759 | unsigned int id; | |
9cb78c16 | 1760 | u64 lun; |
1d645088 | 1761 | enum scsi_scan_mode rescan; |
7970634b MC |
1762 | }; |
1763 | ||
1764 | static int iscsi_user_scan_session(struct device *dev, void *data) | |
30a6c652 | 1765 | { |
7970634b | 1766 | struct iscsi_scan_data *scan_data = data; |
30a6c652 | 1767 | struct iscsi_cls_session *session; |
7970634b MC |
1768 | struct Scsi_Host *shost; |
1769 | struct iscsi_cls_host *ihost; | |
1770 | unsigned long flags; | |
1771 | unsigned int id; | |
1772 | ||
1773 | if (!iscsi_is_session_dev(dev)) | |
1774 | return 0; | |
1775 | ||
1776 | session = iscsi_dev_to_session(dev); | |
632248aa MC |
1777 | |
1778 | ISCSI_DBG_TRANS_SESSION(session, "Scanning session\n"); | |
1779 | ||
7970634b MC |
1780 | shost = iscsi_session_to_shost(session); |
1781 | ihost = shost->shost_data; | |
30a6c652 MC |
1782 | |
1783 | mutex_lock(&ihost->mutex); | |
7970634b MC |
1784 | spin_lock_irqsave(&session->lock, flags); |
1785 | if (session->state != ISCSI_SESSION_LOGGED_IN) { | |
1786 | spin_unlock_irqrestore(&session->lock, flags); | |
632248aa | 1787 | goto user_scan_exit; |
30a6c652 | 1788 | } |
7970634b MC |
1789 | id = session->target_id; |
1790 | spin_unlock_irqrestore(&session->lock, flags); | |
30a6c652 | 1791 | |
7970634b MC |
1792 | if (id != ISCSI_MAX_TARGET) { |
1793 | if ((scan_data->channel == SCAN_WILD_CARD || | |
1794 | scan_data->channel == 0) && | |
1795 | (scan_data->id == SCAN_WILD_CARD || | |
a3be19b9 | 1796 | scan_data->id == id)) { |
7970634b | 1797 | scsi_scan_target(&session->dev, 0, id, |
1d645088 | 1798 | scan_data->lun, scan_data->rescan); |
a3be19b9 WH |
1799 | spin_lock_irqsave(&session->lock, flags); |
1800 | session->target_state = ISCSI_SESSION_TARGET_SCANNED; | |
1801 | spin_unlock_irqrestore(&session->lock, flags); | |
1802 | } | |
7970634b | 1803 | } |
632248aa MC |
1804 | |
1805 | user_scan_exit: | |
7970634b | 1806 | mutex_unlock(&ihost->mutex); |
632248aa | 1807 | ISCSI_DBG_TRANS_SESSION(session, "Completed session scan\n"); |
30a6c652 MC |
1808 | return 0; |
1809 | } | |
1810 | ||
7970634b | 1811 | static int iscsi_user_scan(struct Scsi_Host *shost, uint channel, |
9cb78c16 | 1812 | uint id, u64 lun) |
7970634b MC |
1813 | { |
1814 | struct iscsi_scan_data scan_data; | |
1815 | ||
1816 | scan_data.channel = channel; | |
1817 | scan_data.id = id; | |
1818 | scan_data.lun = lun; | |
1d645088 | 1819 | scan_data.rescan = SCSI_SCAN_MANUAL; |
7970634b MC |
1820 | |
1821 | return device_for_each_child(&shost->shost_gendev, &scan_data, | |
1822 | iscsi_user_scan_session); | |
1823 | } | |
1824 | ||
bd976f62 MC |
1825 | static void iscsi_scan_session(struct work_struct *work) |
1826 | { | |
1827 | struct iscsi_cls_session *session = | |
1828 | container_of(work, struct iscsi_cls_session, scan_work); | |
7970634b | 1829 | struct iscsi_scan_data scan_data; |
bd976f62 | 1830 | |
7970634b MC |
1831 | scan_data.channel = 0; |
1832 | scan_data.id = SCAN_WILD_CARD; | |
1833 | scan_data.lun = SCAN_WILD_CARD; | |
1d645088 | 1834 | scan_data.rescan = SCSI_SCAN_RESCAN; |
bd976f62 | 1835 | |
7970634b | 1836 | iscsi_user_scan_session(&session->dev, &scan_data); |
bd976f62 MC |
1837 | } |
1838 | ||
c01be6dc MC |
1839 | /** |
1840 | * iscsi_block_scsi_eh - block scsi eh until session state has transistioned | |
e6d4ef45 | 1841 | * @cmd: scsi cmd passed to scsi eh handler |
c01be6dc MC |
1842 | * |
1843 | * If the session is down this function will wait for the recovery | |
1844 | * timer to fire or for the session to be logged back in. If the | |
1845 | * recovery timer fires then FAST_IO_FAIL is returned. The caller | |
1846 | * should pass this error value to the scsi eh. | |
1847 | */ | |
1848 | int iscsi_block_scsi_eh(struct scsi_cmnd *cmd) | |
1849 | { | |
1850 | struct iscsi_cls_session *session = | |
1851 | starget_to_session(scsi_target(cmd->device)); | |
1852 | unsigned long flags; | |
1853 | int ret = 0; | |
1854 | ||
1855 | spin_lock_irqsave(&session->lock, flags); | |
1856 | while (session->state != ISCSI_SESSION_LOGGED_IN) { | |
1857 | if (session->state == ISCSI_SESSION_FREE) { | |
1858 | ret = FAST_IO_FAIL; | |
1859 | break; | |
1860 | } | |
1861 | spin_unlock_irqrestore(&session->lock, flags); | |
1862 | msleep(1000); | |
1863 | spin_lock_irqsave(&session->lock, flags); | |
1864 | } | |
1865 | spin_unlock_irqrestore(&session->lock, flags); | |
1866 | return ret; | |
1867 | } | |
1868 | EXPORT_SYMBOL_GPL(iscsi_block_scsi_eh); | |
1869 | ||
c4028958 | 1870 | static void session_recovery_timedout(struct work_struct *work) |
30a6c652 | 1871 | { |
c4028958 DH |
1872 | struct iscsi_cls_session *session = |
1873 | container_of(work, struct iscsi_cls_session, | |
1874 | recovery_work.work); | |
6eabafbe | 1875 | unsigned long flags; |
30a6c652 | 1876 | |
322d739d MC |
1877 | iscsi_cls_session_printk(KERN_INFO, session, |
1878 | "session recovery timed out after %d secs\n", | |
1879 | session->recovery_tmo); | |
30a6c652 | 1880 | |
6eabafbe MC |
1881 | spin_lock_irqsave(&session->lock, flags); |
1882 | switch (session->state) { | |
1883 | case ISCSI_SESSION_FAILED: | |
1884 | session->state = ISCSI_SESSION_FREE; | |
1885 | break; | |
1886 | case ISCSI_SESSION_LOGGED_IN: | |
1887 | case ISCSI_SESSION_FREE: | |
1888 | /* we raced with the unblock's flush */ | |
1889 | spin_unlock_irqrestore(&session->lock, flags); | |
1890 | return; | |
1891 | } | |
1892 | spin_unlock_irqrestore(&session->lock, flags); | |
1893 | ||
632248aa | 1894 | ISCSI_DBG_TRANS_SESSION(session, "Unblocking SCSI target\n"); |
5d9fb5cc | 1895 | scsi_target_unblock(&session->dev, SDEV_TRANSPORT_OFFLINE); |
632248aa | 1896 | ISCSI_DBG_TRANS_SESSION(session, "Completed unblocking SCSI target\n"); |
a0c2f8b6 MC |
1897 | |
1898 | if (session->transport->session_recovery_timedout) | |
1899 | session->transport->session_recovery_timedout(session); | |
30a6c652 MC |
1900 | } |
1901 | ||
45ab33b6 | 1902 | static void __iscsi_unblock_session(struct work_struct *work) |
6eabafbe | 1903 | { |
45ab33b6 MC |
1904 | struct iscsi_cls_session *session = |
1905 | container_of(work, struct iscsi_cls_session, | |
1906 | unblock_work); | |
6eabafbe MC |
1907 | unsigned long flags; |
1908 | ||
632248aa | 1909 | ISCSI_DBG_TRANS_SESSION(session, "Unblocking session\n"); |
8dd3dff3 MC |
1910 | |
1911 | cancel_delayed_work_sync(&session->recovery_work); | |
6eabafbe MC |
1912 | spin_lock_irqsave(&session->lock, flags); |
1913 | session->state = ISCSI_SESSION_LOGGED_IN; | |
1914 | spin_unlock_irqrestore(&session->lock, flags); | |
45ab33b6 | 1915 | /* start IO */ |
5d9fb5cc | 1916 | scsi_target_unblock(&session->dev, SDEV_RUNNING); |
632248aa | 1917 | ISCSI_DBG_TRANS_SESSION(session, "Completed unblocking session\n"); |
6eabafbe | 1918 | } |
45ab33b6 MC |
1919 | |
1920 | /** | |
1921 | * iscsi_unblock_session - set a session as logged in and start IO. | |
1922 | * @session: iscsi session | |
1923 | * | |
1924 | * Mark a session as ready to accept IO. | |
1925 | */ | |
1926 | void iscsi_unblock_session(struct iscsi_cls_session *session) | |
1927 | { | |
b07c348f MC |
1928 | if (!cancel_work_sync(&session->block_work)) |
1929 | cancel_delayed_work_sync(&session->recovery_work); | |
7ce9fc5e | 1930 | |
7cb6683c | 1931 | queue_work(session->workq, &session->unblock_work); |
45ab33b6 | 1932 | /* |
1d726aa6 MC |
1933 | * Blocking the session can be done from any context so we only |
1934 | * queue the block work. Make sure the unblock work has completed | |
1935 | * because it flushes/cancels the other works and updates the state. | |
45ab33b6 | 1936 | */ |
1d726aa6 | 1937 | flush_work(&session->unblock_work); |
45ab33b6 | 1938 | } |
30a6c652 MC |
1939 | EXPORT_SYMBOL_GPL(iscsi_unblock_session); |
1940 | ||
45ab33b6 | 1941 | static void __iscsi_block_session(struct work_struct *work) |
30a6c652 | 1942 | { |
45ab33b6 MC |
1943 | struct iscsi_cls_session *session = |
1944 | container_of(work, struct iscsi_cls_session, | |
1945 | block_work); | |
6eabafbe MC |
1946 | unsigned long flags; |
1947 | ||
632248aa | 1948 | ISCSI_DBG_TRANS_SESSION(session, "Blocking session\n"); |
6eabafbe MC |
1949 | spin_lock_irqsave(&session->lock, flags); |
1950 | session->state = ISCSI_SESSION_FAILED; | |
1951 | spin_unlock_irqrestore(&session->lock, flags); | |
30a6c652 | 1952 | scsi_target_block(&session->dev); |
632248aa | 1953 | ISCSI_DBG_TRANS_SESSION(session, "Completed SCSI target blocking\n"); |
fdd46dcb | 1954 | if (session->recovery_tmo >= 0) |
7cb6683c | 1955 | queue_delayed_work(session->workq, |
fdd46dcb MC |
1956 | &session->recovery_work, |
1957 | session->recovery_tmo * HZ); | |
30a6c652 | 1958 | } |
45ab33b6 MC |
1959 | |
1960 | void iscsi_block_session(struct iscsi_cls_session *session) | |
1961 | { | |
7cb6683c | 1962 | queue_work(session->workq, &session->block_work); |
45ab33b6 | 1963 | } |
30a6c652 MC |
1964 | EXPORT_SYMBOL_GPL(iscsi_block_session); |
1965 | ||
26974789 MC |
1966 | static void __iscsi_unbind_session(struct work_struct *work) |
1967 | { | |
1968 | struct iscsi_cls_session *session = | |
1969 | container_of(work, struct iscsi_cls_session, | |
1970 | unbind_work); | |
1971 | struct Scsi_Host *shost = iscsi_session_to_shost(session); | |
32c6e1b9 | 1972 | struct iscsi_cls_host *ihost = shost->shost_data; |
7970634b | 1973 | unsigned long flags; |
8d4a690c | 1974 | unsigned int target_id; |
a3be19b9 | 1975 | bool remove_target = true; |
26974789 | 1976 | |
632248aa MC |
1977 | ISCSI_DBG_TRANS_SESSION(session, "Unbinding session\n"); |
1978 | ||
26974789 MC |
1979 | /* Prevent new scans and make sure scanning is not in progress */ |
1980 | mutex_lock(&ihost->mutex); | |
7970634b | 1981 | spin_lock_irqsave(&session->lock, flags); |
a3be19b9 WH |
1982 | if (session->target_state == ISCSI_SESSION_TARGET_ALLOCATED) { |
1983 | remove_target = false; | |
1984 | } else if (session->target_state != ISCSI_SESSION_TARGET_SCANNED) { | |
7970634b | 1985 | spin_unlock_irqrestore(&session->lock, flags); |
26974789 | 1986 | mutex_unlock(&ihost->mutex); |
a3be19b9 WH |
1987 | ISCSI_DBG_TRANS_SESSION(session, |
1988 | "Skipping target unbinding: Session is unbound/unbinding.\n"); | |
1989 | return; | |
26974789 | 1990 | } |
8d4a690c | 1991 | |
a3be19b9 | 1992 | session->target_state = ISCSI_SESSION_TARGET_UNBINDING; |
8d4a690c | 1993 | target_id = session->target_id; |
7970634b MC |
1994 | session->target_id = ISCSI_MAX_TARGET; |
1995 | spin_unlock_irqrestore(&session->lock, flags); | |
26974789 MC |
1996 | mutex_unlock(&ihost->mutex); |
1997 | ||
a3be19b9 WH |
1998 | if (remove_target) |
1999 | scsi_remove_target(&session->dev); | |
e463f96b | 2000 | |
8d4a690c | 2001 | if (session->ida_used) |
3fd3a52c | 2002 | ida_free(&iscsi_sess_ida, target_id); |
8d4a690c | 2003 | |
26974789 | 2004 | iscsi_session_event(session, ISCSI_KEVENT_UNBIND_SESSION); |
632248aa | 2005 | ISCSI_DBG_TRANS_SESSION(session, "Completed target removal\n"); |
a3be19b9 WH |
2006 | |
2007 | spin_lock_irqsave(&session->lock, flags); | |
2008 | session->target_state = ISCSI_SESSION_TARGET_UNBOUND; | |
2009 | spin_unlock_irqrestore(&session->lock, flags); | |
26974789 MC |
2010 | } |
2011 | ||
cc6b32ee FM |
2012 | static void __iscsi_destroy_session(struct work_struct *work) |
2013 | { | |
2014 | struct iscsi_cls_session *session = | |
2015 | container_of(work, struct iscsi_cls_session, destroy_work); | |
2016 | ||
2017 | session->transport->destroy_session(session); | |
2018 | } | |
2019 | ||
7b8631b5 | 2020 | struct iscsi_cls_session * |
5d91e209 MC |
2021 | iscsi_alloc_session(struct Scsi_Host *shost, struct iscsi_transport *transport, |
2022 | int dd_size) | |
7b8631b5 MC |
2023 | { |
2024 | struct iscsi_cls_session *session; | |
7b8631b5 | 2025 | |
5d91e209 | 2026 | session = kzalloc(sizeof(*session) + dd_size, |
b5c7a12d | 2027 | GFP_KERNEL); |
7b8631b5 | 2028 | if (!session) |
f53a88da MC |
2029 | return NULL; |
2030 | ||
7b8631b5 | 2031 | session->transport = transport; |
0c70d84b | 2032 | session->creator = -1; |
30a6c652 | 2033 | session->recovery_tmo = 120; |
9c8108a4 | 2034 | session->recovery_tmo_sysfs_override = false; |
6eabafbe | 2035 | session->state = ISCSI_SESSION_FREE; |
c4028958 | 2036 | INIT_DELAYED_WORK(&session->recovery_work, session_recovery_timedout); |
30a6c652 | 2037 | INIT_LIST_HEAD(&session->sess_list); |
45ab33b6 MC |
2038 | INIT_WORK(&session->unblock_work, __iscsi_unblock_session); |
2039 | INIT_WORK(&session->block_work, __iscsi_block_session); | |
26974789 | 2040 | INIT_WORK(&session->unbind_work, __iscsi_unbind_session); |
bd976f62 | 2041 | INIT_WORK(&session->scan_work, iscsi_scan_session); |
cc6b32ee | 2042 | INIT_WORK(&session->destroy_work, __iscsi_destroy_session); |
6eabafbe | 2043 | spin_lock_init(&session->lock); |
7b8631b5 | 2044 | |
6a8a0d36 MC |
2045 | /* this is released in the dev's release function */ |
2046 | scsi_host_get(shost); | |
8434aa8b MC |
2047 | session->dev.parent = &shost->shost_gendev; |
2048 | session->dev.release = iscsi_session_release; | |
2049 | device_initialize(&session->dev); | |
5d91e209 | 2050 | if (dd_size) |
b5c7a12d | 2051 | session->dd_data = &session[1]; |
632248aa MC |
2052 | |
2053 | ISCSI_DBG_TRANS_SESSION(session, "Completed session allocation\n"); | |
8434aa8b MC |
2054 | return session; |
2055 | } | |
2056 | EXPORT_SYMBOL_GPL(iscsi_alloc_session); | |
2057 | ||
6a8a0d36 | 2058 | int iscsi_add_session(struct iscsi_cls_session *session, unsigned int target_id) |
8434aa8b | 2059 | { |
5842ea36 | 2060 | struct Scsi_Host *shost = iscsi_session_to_shost(session); |
26974789 | 2061 | unsigned long flags; |
8d4a690c | 2062 | int id = 0; |
8434aa8b | 2063 | int err; |
b5c7a12d | 2064 | |
41be1444 | 2065 | session->sid = atomic_add_return(1, &iscsi_session_nr); |
7970634b | 2066 | |
5842ea36 MC |
2067 | session->workq = alloc_workqueue("iscsi_ctrl_%d:%d", |
2068 | WQ_SYSFS | WQ_MEM_RECLAIM | WQ_UNBOUND, 0, | |
2069 | shost->host_no, session->sid); | |
2070 | if (!session->workq) | |
2071 | return -ENOMEM; | |
2072 | ||
8d4a690c | 2073 | if (target_id == ISCSI_MAX_TARGET) { |
3fd3a52c | 2074 | id = ida_alloc(&iscsi_sess_ida, GFP_KERNEL); |
7970634b | 2075 | |
8d4a690c | 2076 | if (id < 0) { |
7970634b | 2077 | iscsi_cls_session_printk(KERN_ERR, session, |
8d4a690c | 2078 | "Failure in Target ID Allocation\n"); |
5842ea36 MC |
2079 | err = id; |
2080 | goto destroy_wq; | |
7970634b | 2081 | } |
8d4a690c MC |
2082 | session->target_id = (unsigned int)id; |
2083 | session->ida_used = true; | |
2084 | } else | |
2085 | session->target_id = target_id; | |
a3be19b9 WH |
2086 | spin_lock_irqsave(&session->lock, flags); |
2087 | session->target_state = ISCSI_SESSION_TARGET_ALLOCATED; | |
2088 | spin_unlock_irqrestore(&session->lock, flags); | |
30a6c652 | 2089 | |
71610f55 | 2090 | dev_set_name(&session->dev, "session%u", session->sid); |
8434aa8b | 2091 | err = device_add(&session->dev); |
7b8631b5 | 2092 | if (err) { |
322d739d MC |
2093 | iscsi_cls_session_printk(KERN_ERR, session, |
2094 | "could not register session's dev\n"); | |
8d4a690c | 2095 | goto release_ida; |
7b8631b5 | 2096 | } |
f3c893e3 GKB |
2097 | err = transport_register_device(&session->dev); |
2098 | if (err) { | |
2099 | iscsi_cls_session_printk(KERN_ERR, session, | |
2100 | "could not register transport's dev\n"); | |
2101 | goto release_dev; | |
2102 | } | |
7b8631b5 | 2103 | |
26974789 MC |
2104 | spin_lock_irqsave(&sesslock, flags); |
2105 | list_add(&session->sess_list, &sesslist); | |
2106 | spin_unlock_irqrestore(&sesslock, flags); | |
2107 | ||
26974789 | 2108 | iscsi_session_event(session, ISCSI_KEVENT_CREATE_SESSION); |
632248aa | 2109 | ISCSI_DBG_TRANS_SESSION(session, "Completed session adding\n"); |
8434aa8b | 2110 | return 0; |
30a6c652 | 2111 | |
f3c893e3 GKB |
2112 | release_dev: |
2113 | device_del(&session->dev); | |
8d4a690c MC |
2114 | release_ida: |
2115 | if (session->ida_used) | |
3fd3a52c | 2116 | ida_free(&iscsi_sess_ida, session->target_id); |
5842ea36 MC |
2117 | destroy_wq: |
2118 | destroy_workqueue(session->workq); | |
8434aa8b | 2119 | return err; |
7b8631b5 | 2120 | } |
8434aa8b | 2121 | EXPORT_SYMBOL_GPL(iscsi_add_session); |
7b8631b5 MC |
2122 | |
2123 | /** | |
8434aa8b MC |
2124 | * iscsi_create_session - create iscsi class session |
2125 | * @shost: scsi host | |
2126 | * @transport: iscsi transport | |
5d91e209 | 2127 | * @dd_size: private driver data size |
eb44820c | 2128 | * @target_id: which target |
7b8631b5 | 2129 | * |
8434aa8b | 2130 | * This can be called from a LLD or iscsi_transport. |
eb44820c | 2131 | */ |
8434aa8b | 2132 | struct iscsi_cls_session * |
5d91e209 MC |
2133 | iscsi_create_session(struct Scsi_Host *shost, struct iscsi_transport *transport, |
2134 | int dd_size, unsigned int target_id) | |
8434aa8b MC |
2135 | { |
2136 | struct iscsi_cls_session *session; | |
2137 | ||
5d91e209 | 2138 | session = iscsi_alloc_session(shost, transport, dd_size); |
8434aa8b MC |
2139 | if (!session) |
2140 | return NULL; | |
2141 | ||
6a8a0d36 | 2142 | if (iscsi_add_session(session, target_id)) { |
8434aa8b MC |
2143 | iscsi_free_session(session); |
2144 | return NULL; | |
2145 | } | |
2146 | return session; | |
2147 | } | |
2148 | EXPORT_SYMBOL_GPL(iscsi_create_session); | |
2149 | ||
26974789 MC |
2150 | static void iscsi_conn_release(struct device *dev) |
2151 | { | |
2152 | struct iscsi_cls_conn *conn = iscsi_dev_to_conn(dev); | |
2153 | struct device *parent = conn->dev.parent; | |
2154 | ||
632248aa | 2155 | ISCSI_DBG_TRANS_CONN(conn, "Releasing conn\n"); |
26974789 MC |
2156 | kfree(conn); |
2157 | put_device(parent); | |
2158 | } | |
2159 | ||
2160 | static int iscsi_is_conn_dev(const struct device *dev) | |
2161 | { | |
2162 | return dev->release == iscsi_conn_release; | |
2163 | } | |
2164 | ||
2165 | static int iscsi_iter_destroy_conn_fn(struct device *dev, void *data) | |
2166 | { | |
2167 | if (!iscsi_is_conn_dev(dev)) | |
2168 | return 0; | |
8709c323 WH |
2169 | |
2170 | iscsi_remove_conn(iscsi_dev_to_conn(dev)); | |
8709c323 | 2171 | return 0; |
26974789 MC |
2172 | } |
2173 | ||
8434aa8b | 2174 | void iscsi_remove_session(struct iscsi_cls_session *session) |
7b8631b5 | 2175 | { |
26974789 MC |
2176 | unsigned long flags; |
2177 | int err; | |
2178 | ||
632248aa MC |
2179 | ISCSI_DBG_TRANS_SESSION(session, "Removing session\n"); |
2180 | ||
26974789 | 2181 | spin_lock_irqsave(&sesslock, flags); |
93bf02e5 MC |
2182 | if (!list_empty(&session->sess_list)) |
2183 | list_del(&session->sess_list); | |
26974789 | 2184 | spin_unlock_irqrestore(&sesslock, flags); |
30a6c652 | 2185 | |
b07c348f MC |
2186 | if (!cancel_work_sync(&session->block_work)) |
2187 | cancel_delayed_work_sync(&session->recovery_work); | |
2188 | cancel_work_sync(&session->unblock_work); | |
26974789 MC |
2189 | /* |
2190 | * If we are blocked let commands flow again. The lld or iscsi | |
2191 | * layer should set up the queuecommand to fail commands. | |
45ab33b6 MC |
2192 | * We assume that LLD will not be calling block/unblock while |
2193 | * removing the session. | |
26974789 | 2194 | */ |
6eabafbe MC |
2195 | spin_lock_irqsave(&session->lock, flags); |
2196 | session->state = ISCSI_SESSION_FREE; | |
2197 | spin_unlock_irqrestore(&session->lock, flags); | |
bd976f62 | 2198 | |
5d9fb5cc | 2199 | scsi_target_unblock(&session->dev, SDEV_TRANSPORT_OFFLINE); |
d8ec5d67 MC |
2200 | /* |
2201 | * qla4xxx can perform it's own scans when it runs in kernel only | |
2202 | * mode. Make sure to flush those scans. | |
2203 | */ | |
90e96313 | 2204 | flush_work(&session->scan_work); |
165aa2bf ML |
2205 | /* flush running unbind operations */ |
2206 | flush_work(&session->unbind_work); | |
45ab33b6 | 2207 | __iscsi_unbind_session(&session->unbind_work); |
30a6c652 | 2208 | |
26974789 MC |
2209 | /* hw iscsi may not have removed all connections from session */ |
2210 | err = device_for_each_child(&session->dev, NULL, | |
2211 | iscsi_iter_destroy_conn_fn); | |
2212 | if (err) | |
322d739d MC |
2213 | iscsi_cls_session_printk(KERN_ERR, session, |
2214 | "Could not delete all connections " | |
2215 | "for session. Error %d.\n", err); | |
8434aa8b | 2216 | |
7b8631b5 | 2217 | transport_unregister_device(&session->dev); |
632248aa | 2218 | |
5842ea36 MC |
2219 | destroy_workqueue(session->workq); |
2220 | ||
632248aa | 2221 | ISCSI_DBG_TRANS_SESSION(session, "Completing session removal\n"); |
8434aa8b MC |
2222 | device_del(&session->dev); |
2223 | } | |
2224 | EXPORT_SYMBOL_GPL(iscsi_remove_session); | |
2225 | ||
23d6fefb MC |
2226 | static void iscsi_stop_conn(struct iscsi_cls_conn *conn, int flag) |
2227 | { | |
2228 | ISCSI_DBG_TRANS_CONN(conn, "Stopping conn.\n"); | |
2229 | ||
2230 | switch (flag) { | |
2231 | case STOP_CONN_RECOVER: | |
03690d81 | 2232 | WRITE_ONCE(conn->state, ISCSI_CONN_FAILED); |
23d6fefb MC |
2233 | break; |
2234 | case STOP_CONN_TERM: | |
03690d81 | 2235 | WRITE_ONCE(conn->state, ISCSI_CONN_DOWN); |
23d6fefb MC |
2236 | break; |
2237 | default: | |
2238 | iscsi_cls_conn_printk(KERN_ERR, conn, "invalid stop flag %d\n", | |
2239 | flag); | |
2240 | return; | |
2241 | } | |
2242 | ||
2243 | conn->transport->stop_conn(conn, flag); | |
2244 | ISCSI_DBG_TRANS_CONN(conn, "Stopping conn done.\n"); | |
2245 | } | |
2246 | ||
c34f95e9 MC |
2247 | static void iscsi_ep_disconnect(struct iscsi_cls_conn *conn, bool is_active) |
2248 | { | |
2249 | struct iscsi_cls_session *session = iscsi_conn_to_session(conn); | |
2250 | struct iscsi_endpoint *ep; | |
2251 | ||
2252 | ISCSI_DBG_TRANS_CONN(conn, "disconnect ep.\n"); | |
03690d81 | 2253 | WRITE_ONCE(conn->state, ISCSI_CONN_FAILED); |
c34f95e9 MC |
2254 | |
2255 | if (!conn->ep || !session->transport->ep_disconnect) | |
2256 | return; | |
2257 | ||
2258 | ep = conn->ep; | |
2259 | conn->ep = NULL; | |
2260 | ||
2261 | session->transport->unbind_conn(conn, is_active); | |
2262 | session->transport->ep_disconnect(ep); | |
2263 | ISCSI_DBG_TRANS_CONN(conn, "disconnect ep done.\n"); | |
2264 | } | |
2265 | ||
cbd2283a MC |
2266 | static void iscsi_if_disconnect_bound_ep(struct iscsi_cls_conn *conn, |
2267 | struct iscsi_endpoint *ep, | |
2268 | bool is_active) | |
2269 | { | |
2270 | /* Check if this was a conn error and the kernel took ownership */ | |
7c6e99c1 | 2271 | spin_lock_irq(&conn->lock); |
cbd2283a | 2272 | if (!test_bit(ISCSI_CLS_CONN_BIT_CLEANUP, &conn->flags)) { |
7c6e99c1 | 2273 | spin_unlock_irq(&conn->lock); |
cbd2283a MC |
2274 | iscsi_ep_disconnect(conn, is_active); |
2275 | } else { | |
7c6e99c1 | 2276 | spin_unlock_irq(&conn->lock); |
cbd2283a MC |
2277 | ISCSI_DBG_TRANS_CONN(conn, "flush kernel conn cleanup.\n"); |
2278 | mutex_unlock(&conn->ep_mutex); | |
2279 | ||
2280 | flush_work(&conn->cleanup_work); | |
0aadafb5 MC |
2281 | /* |
2282 | * Userspace is now done with the EP so we can release the ref | |
2283 | * iscsi_cleanup_conn_work_fn took. | |
2284 | */ | |
2285 | iscsi_put_endpoint(ep); | |
cbd2283a MC |
2286 | mutex_lock(&conn->ep_mutex); |
2287 | } | |
2288 | } | |
2289 | ||
3328333b | 2290 | static int iscsi_if_stop_conn(struct iscsi_cls_conn *conn, int flag) |
23d6fefb | 2291 | { |
23d6fefb | 2292 | ISCSI_DBG_TRANS_CONN(conn, "iscsi if conn stop.\n"); |
da2f132d MC |
2293 | /* |
2294 | * For offload, iscsid may not know about the ep like when iscsid is | |
2295 | * restarted or for kernel based session shutdown iscsid is not even | |
2296 | * up. For these cases, we do the disconnect now. | |
2297 | */ | |
2298 | mutex_lock(&conn->ep_mutex); | |
2299 | if (conn->ep) | |
2300 | iscsi_if_disconnect_bound_ep(conn, conn->ep, true); | |
2301 | mutex_unlock(&conn->ep_mutex); | |
2302 | ||
23d6fefb MC |
2303 | /* |
2304 | * If this is a termination we have to call stop_conn with that flag | |
2305 | * so the correct states get set. If we haven't run the work yet try to | |
2306 | * avoid the extra run. | |
2307 | */ | |
2308 | if (flag == STOP_CONN_TERM) { | |
2309 | cancel_work_sync(&conn->cleanup_work); | |
2310 | iscsi_stop_conn(conn, flag); | |
2311 | } else { | |
2312 | /* | |
2313 | * Figure out if it was the kernel or userspace initiating this. | |
2314 | */ | |
7c6e99c1 | 2315 | spin_lock_irq(&conn->lock); |
23d6fefb | 2316 | if (!test_and_set_bit(ISCSI_CLS_CONN_BIT_CLEANUP, &conn->flags)) { |
7c6e99c1 | 2317 | spin_unlock_irq(&conn->lock); |
23d6fefb MC |
2318 | iscsi_stop_conn(conn, flag); |
2319 | } else { | |
7c6e99c1 | 2320 | spin_unlock_irq(&conn->lock); |
23d6fefb MC |
2321 | ISCSI_DBG_TRANS_CONN(conn, |
2322 | "flush kernel conn cleanup.\n"); | |
2323 | flush_work(&conn->cleanup_work); | |
2324 | } | |
2325 | /* | |
2326 | * Only clear for recovery to avoid extra cleanup runs during | |
2327 | * termination. | |
2328 | */ | |
7c6e99c1 | 2329 | spin_lock_irq(&conn->lock); |
23d6fefb | 2330 | clear_bit(ISCSI_CLS_CONN_BIT_CLEANUP, &conn->flags); |
7c6e99c1 | 2331 | spin_unlock_irq(&conn->lock); |
23d6fefb MC |
2332 | } |
2333 | ISCSI_DBG_TRANS_CONN(conn, "iscsi if conn stop done.\n"); | |
2334 | return 0; | |
2335 | } | |
2336 | ||
23d6fefb MC |
2337 | static void iscsi_cleanup_conn_work_fn(struct work_struct *work) |
2338 | { | |
2339 | struct iscsi_cls_conn *conn = container_of(work, struct iscsi_cls_conn, | |
2340 | cleanup_work); | |
2341 | struct iscsi_cls_session *session = iscsi_conn_to_session(conn); | |
2342 | ||
2343 | mutex_lock(&conn->ep_mutex); | |
0aadafb5 MC |
2344 | /* |
2345 | * Get a ref to the ep, so we don't release its ID until after | |
2346 | * userspace is done referencing it in iscsi_if_disconnect_bound_ep. | |
2347 | */ | |
2348 | if (conn->ep) | |
2349 | get_device(&conn->ep->dev); | |
23d6fefb MC |
2350 | iscsi_ep_disconnect(conn, false); |
2351 | ||
2352 | if (system_state != SYSTEM_RUNNING) { | |
2353 | /* | |
2354 | * If the user has set up for the session to never timeout | |
2355 | * then hang like they wanted. For all other cases fail right | |
2356 | * away since userspace is not going to relogin. | |
2357 | */ | |
2358 | if (session->recovery_tmo > 0) | |
2359 | session->recovery_tmo = 0; | |
2360 | } | |
2361 | ||
2362 | iscsi_stop_conn(conn, STOP_CONN_RECOVER); | |
2363 | mutex_unlock(&conn->ep_mutex); | |
2364 | ISCSI_DBG_TRANS_CONN(conn, "cleanup done.\n"); | |
2365 | } | |
2366 | ||
bb42856b MC |
2367 | static int iscsi_iter_force_destroy_conn_fn(struct device *dev, void *data) |
2368 | { | |
2369 | struct iscsi_transport *transport; | |
2370 | struct iscsi_cls_conn *conn; | |
2371 | ||
2372 | if (!iscsi_is_conn_dev(dev)) | |
2373 | return 0; | |
2374 | ||
2375 | conn = iscsi_dev_to_conn(dev); | |
2376 | transport = conn->transport; | |
2377 | ||
2378 | if (READ_ONCE(conn->state) != ISCSI_CONN_DOWN) | |
2379 | iscsi_if_stop_conn(conn, STOP_CONN_TERM); | |
2380 | ||
2381 | transport->destroy_conn(conn); | |
2382 | return 0; | |
2383 | } | |
2384 | ||
2385 | /** | |
2386 | * iscsi_force_destroy_session - destroy a session from the kernel | |
2387 | * @session: session to destroy | |
2388 | * | |
2389 | * Force the destruction of a session from the kernel. This should only be | |
2390 | * used when userspace is no longer running during system shutdown. | |
2391 | */ | |
2392 | void iscsi_force_destroy_session(struct iscsi_cls_session *session) | |
2393 | { | |
2394 | struct iscsi_transport *transport = session->transport; | |
2395 | unsigned long flags; | |
2396 | ||
2397 | WARN_ON_ONCE(system_state == SYSTEM_RUNNING); | |
2398 | ||
2399 | spin_lock_irqsave(&sesslock, flags); | |
2400 | if (list_empty(&session->sess_list)) { | |
2401 | spin_unlock_irqrestore(&sesslock, flags); | |
2402 | /* | |
2403 | * Conn/ep is already freed. Session is being torn down via | |
2404 | * async path. For shutdown we don't care about it so return. | |
2405 | */ | |
2406 | return; | |
2407 | } | |
2408 | spin_unlock_irqrestore(&sesslock, flags); | |
2409 | ||
2410 | device_for_each_child(&session->dev, NULL, | |
2411 | iscsi_iter_force_destroy_conn_fn); | |
2412 | transport->destroy_session(session); | |
2413 | } | |
2414 | EXPORT_SYMBOL_GPL(iscsi_force_destroy_session); | |
2415 | ||
8434aa8b MC |
2416 | void iscsi_free_session(struct iscsi_cls_session *session) |
2417 | { | |
632248aa | 2418 | ISCSI_DBG_TRANS_SESSION(session, "Freeing session\n"); |
26974789 | 2419 | iscsi_session_event(session, ISCSI_KEVENT_DESTROY_SESSION); |
8434aa8b | 2420 | put_device(&session->dev); |
7b8631b5 | 2421 | } |
8434aa8b MC |
2422 | EXPORT_SYMBOL_GPL(iscsi_free_session); |
2423 | ||
ad515cad WH |
2424 | /** |
2425 | * iscsi_alloc_conn - alloc iscsi class connection | |
2426 | * @session: iscsi cls session | |
2427 | * @dd_size: private driver data size | |
2428 | * @cid: connection id | |
2429 | */ | |
2430 | struct iscsi_cls_conn * | |
2431 | iscsi_alloc_conn(struct iscsi_cls_session *session, int dd_size, uint32_t cid) | |
2432 | { | |
2433 | struct iscsi_transport *transport = session->transport; | |
2434 | struct iscsi_cls_conn *conn; | |
2435 | ||
2436 | conn = kzalloc(sizeof(*conn) + dd_size, GFP_KERNEL); | |
2437 | if (!conn) | |
2438 | return NULL; | |
2439 | if (dd_size) | |
2440 | conn->dd_data = &conn[1]; | |
2441 | ||
2442 | mutex_init(&conn->ep_mutex); | |
7c6e99c1 | 2443 | spin_lock_init(&conn->lock); |
ad515cad WH |
2444 | INIT_LIST_HEAD(&conn->conn_list); |
2445 | INIT_WORK(&conn->cleanup_work, iscsi_cleanup_conn_work_fn); | |
2446 | conn->transport = transport; | |
2447 | conn->cid = cid; | |
03690d81 | 2448 | WRITE_ONCE(conn->state, ISCSI_CONN_DOWN); |
ad515cad WH |
2449 | |
2450 | /* this is released in the dev's release function */ | |
2451 | if (!get_device(&session->dev)) | |
2452 | goto free_conn; | |
2453 | ||
2454 | dev_set_name(&conn->dev, "connection%d:%u", session->sid, cid); | |
2455 | device_initialize(&conn->dev); | |
2456 | conn->dev.parent = &session->dev; | |
2457 | conn->dev.release = iscsi_conn_release; | |
2458 | ||
2459 | return conn; | |
2460 | ||
2461 | free_conn: | |
2462 | kfree(conn); | |
2463 | return NULL; | |
2464 | } | |
2465 | EXPORT_SYMBOL_GPL(iscsi_alloc_conn); | |
2466 | ||
2467 | /** | |
2468 | * iscsi_add_conn - add iscsi class connection | |
2469 | * @conn: iscsi cls connection | |
2470 | * | |
2471 | * This will expose iscsi_cls_conn to sysfs so make sure the related | |
2472 | * resources for sysfs attributes are initialized before calling this. | |
2473 | */ | |
2474 | int iscsi_add_conn(struct iscsi_cls_conn *conn) | |
2475 | { | |
2476 | int err; | |
2477 | unsigned long flags; | |
2478 | struct iscsi_cls_session *session = iscsi_dev_to_session(conn->dev.parent); | |
2479 | ||
2480 | err = device_add(&conn->dev); | |
2481 | if (err) { | |
2482 | iscsi_cls_session_printk(KERN_ERR, session, | |
2483 | "could not register connection's dev\n"); | |
2484 | return err; | |
2485 | } | |
2486 | err = transport_register_device(&conn->dev); | |
2487 | if (err) { | |
2488 | iscsi_cls_session_printk(KERN_ERR, session, | |
2489 | "could not register transport's dev\n"); | |
2490 | device_del(&conn->dev); | |
2491 | return err; | |
2492 | } | |
2493 | ||
2494 | spin_lock_irqsave(&connlock, flags); | |
2495 | list_add(&conn->conn_list, &connlist); | |
2496 | spin_unlock_irqrestore(&connlock, flags); | |
2497 | ||
2498 | return 0; | |
2499 | } | |
2500 | EXPORT_SYMBOL_GPL(iscsi_add_conn); | |
2501 | ||
2502 | /** | |
2503 | * iscsi_remove_conn - remove iscsi class connection from sysfs | |
2504 | * @conn: iscsi cls connection | |
2505 | * | |
2506 | * Remove iscsi_cls_conn from sysfs, and wait for previous | |
2507 | * read/write of iscsi_cls_conn's attributes in sysfs to finish. | |
2508 | */ | |
2509 | void iscsi_remove_conn(struct iscsi_cls_conn *conn) | |
2510 | { | |
2511 | unsigned long flags; | |
2512 | ||
2513 | spin_lock_irqsave(&connlock, flags); | |
2514 | list_del(&conn->conn_list); | |
2515 | spin_unlock_irqrestore(&connlock, flags); | |
2516 | ||
2517 | transport_unregister_device(&conn->dev); | |
2518 | device_del(&conn->dev); | |
2519 | } | |
2520 | EXPORT_SYMBOL_GPL(iscsi_remove_conn); | |
2521 | ||
b1d19e8c MC |
2522 | void iscsi_put_conn(struct iscsi_cls_conn *conn) |
2523 | { | |
2524 | put_device(&conn->dev); | |
2525 | } | |
2526 | EXPORT_SYMBOL_GPL(iscsi_put_conn); | |
2527 | ||
2528 | void iscsi_get_conn(struct iscsi_cls_conn *conn) | |
2529 | { | |
2530 | get_device(&conn->dev); | |
2531 | } | |
2532 | EXPORT_SYMBOL_GPL(iscsi_get_conn); | |
2533 | ||
7b8631b5 MC |
2534 | /* |
2535 | * iscsi interface functions | |
2536 | */ | |
0896b752 AA |
2537 | static struct iscsi_internal * |
2538 | iscsi_if_transport_lookup(struct iscsi_transport *tt) | |
2539 | { | |
2540 | struct iscsi_internal *priv; | |
2541 | unsigned long flags; | |
2542 | ||
2543 | spin_lock_irqsave(&iscsi_transport_lock, flags); | |
2544 | list_for_each_entry(priv, &iscsi_transports, list) { | |
2545 | if (tt == priv->iscsi_transport) { | |
2546 | spin_unlock_irqrestore(&iscsi_transport_lock, flags); | |
2547 | return priv; | |
2548 | } | |
2549 | } | |
2550 | spin_unlock_irqrestore(&iscsi_transport_lock, flags); | |
2551 | return NULL; | |
2552 | } | |
1da177e4 | 2553 | |
53cb8a1f | 2554 | static int |
43514774 | 2555 | iscsi_multicast_skb(struct sk_buff *skb, uint32_t group, gfp_t gfp) |
53cb8a1f | 2556 | { |
43514774 | 2557 | return nlmsg_multicast(nls, skb, 0, group, gfp); |
1da177e4 | 2558 | } |
1da177e4 | 2559 | |
af170928 CL |
2560 | static int |
2561 | iscsi_unicast_skb(struct sk_buff *skb, u32 portid) | |
2562 | { | |
2563 | return nlmsg_unicast(nls, skb, portid); | |
2564 | } | |
2565 | ||
7b7232f3 | 2566 | int iscsi_recv_pdu(struct iscsi_cls_conn *conn, struct iscsi_hdr *hdr, |
0896b752 | 2567 | char *data, uint32_t data_size) |
1da177e4 | 2568 | { |
0896b752 AA |
2569 | struct nlmsghdr *nlh; |
2570 | struct sk_buff *skb; | |
2571 | struct iscsi_uevent *ev; | |
0896b752 | 2572 | char *pdu; |
790f39a2 | 2573 | struct iscsi_internal *priv; |
e07ebea0 H |
2574 | int len = nlmsg_total_size(sizeof(*ev) + sizeof(struct iscsi_hdr) + |
2575 | data_size); | |
0896b752 | 2576 | |
790f39a2 MC |
2577 | priv = iscsi_if_transport_lookup(conn->transport); |
2578 | if (!priv) | |
2579 | return -EINVAL; | |
2580 | ||
43a145a3 | 2581 | skb = alloc_skb(len, GFP_ATOMIC); |
0896b752 | 2582 | if (!skb) { |
e5bd7b54 | 2583 | iscsi_conn_error_event(conn, ISCSI_ERR_CONN_FAILED); |
322d739d MC |
2584 | iscsi_cls_conn_printk(KERN_ERR, conn, "can not deliver " |
2585 | "control PDU: OOM\n"); | |
0896b752 AA |
2586 | return -ENOMEM; |
2587 | } | |
1da177e4 | 2588 | |
43514774 | 2589 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); |
e07ebea0 | 2590 | ev = nlmsg_data(nlh); |
0896b752 AA |
2591 | memset(ev, 0, sizeof(*ev)); |
2592 | ev->transport_handle = iscsi_handle(conn->transport); | |
2593 | ev->type = ISCSI_KEVENT_RECV_PDU; | |
b5c7a12d MC |
2594 | ev->r.recv_req.cid = conn->cid; |
2595 | ev->r.recv_req.sid = iscsi_conn_get_sid(conn); | |
0896b752 AA |
2596 | pdu = (char*)ev + sizeof(*ev); |
2597 | memcpy(pdu, hdr, sizeof(struct iscsi_hdr)); | |
2598 | memcpy(pdu + sizeof(struct iscsi_hdr), data, data_size); | |
1da177e4 | 2599 | |
43514774 | 2600 | return iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_ATOMIC); |
1da177e4 | 2601 | } |
0896b752 | 2602 | EXPORT_SYMBOL_GPL(iscsi_recv_pdu); |
1da177e4 | 2603 | |
43514774 MC |
2604 | int iscsi_offload_mesg(struct Scsi_Host *shost, |
2605 | struct iscsi_transport *transport, uint32_t type, | |
2606 | char *data, uint16_t data_size) | |
2607 | { | |
2608 | struct nlmsghdr *nlh; | |
2609 | struct sk_buff *skb; | |
2610 | struct iscsi_uevent *ev; | |
e07ebea0 | 2611 | int len = nlmsg_total_size(sizeof(*ev) + data_size); |
43514774 | 2612 | |
a541f840 | 2613 | skb = alloc_skb(len, GFP_ATOMIC); |
43514774 MC |
2614 | if (!skb) { |
2615 | printk(KERN_ERR "can not deliver iscsi offload message:OOM\n"); | |
2616 | return -ENOMEM; | |
2617 | } | |
2618 | ||
2619 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); | |
e07ebea0 | 2620 | ev = nlmsg_data(nlh); |
43514774 MC |
2621 | memset(ev, 0, sizeof(*ev)); |
2622 | ev->type = type; | |
2623 | ev->transport_handle = iscsi_handle(transport); | |
2624 | switch (type) { | |
2625 | case ISCSI_KEVENT_PATH_REQ: | |
2626 | ev->r.req_path.host_no = shost->host_no; | |
2627 | break; | |
2628 | case ISCSI_KEVENT_IF_DOWN: | |
2629 | ev->r.notify_if_down.host_no = shost->host_no; | |
2630 | break; | |
2631 | } | |
2632 | ||
2633 | memcpy((char *)ev + sizeof(*ev), data, data_size); | |
2634 | ||
a541f840 | 2635 | return iscsi_multicast_skb(skb, ISCSI_NL_GRP_UIP, GFP_ATOMIC); |
43514774 MC |
2636 | } |
2637 | EXPORT_SYMBOL_GPL(iscsi_offload_mesg); | |
2638 | ||
e5bd7b54 | 2639 | void iscsi_conn_error_event(struct iscsi_cls_conn *conn, enum iscsi_err error) |
1da177e4 | 2640 | { |
0896b752 AA |
2641 | struct nlmsghdr *nlh; |
2642 | struct sk_buff *skb; | |
2643 | struct iscsi_uevent *ev; | |
790f39a2 | 2644 | struct iscsi_internal *priv; |
e07ebea0 | 2645 | int len = nlmsg_total_size(sizeof(*ev)); |
7c6e99c1 | 2646 | unsigned long flags; |
03690d81 | 2647 | int state; |
0ab71045 | 2648 | |
7c6e99c1 | 2649 | spin_lock_irqsave(&conn->lock, flags); |
03690d81 MC |
2650 | /* |
2651 | * Userspace will only do a stop call if we are at least bound. And, we | |
2652 | * only need to do the in kernel cleanup if in the UP state so cmds can | |
2653 | * be released to upper layers. If in other states just wait for | |
2654 | * userspace to avoid races that can leave the cleanup_work queued. | |
2655 | */ | |
2656 | state = READ_ONCE(conn->state); | |
2657 | switch (state) { | |
2658 | case ISCSI_CONN_BOUND: | |
2659 | case ISCSI_CONN_UP: | |
2660 | if (!test_and_set_bit(ISCSI_CLS_CONN_BIT_CLEANUP, | |
2661 | &conn->flags)) { | |
2662 | queue_work(iscsi_conn_cleanup_workq, | |
2663 | &conn->cleanup_work); | |
2664 | } | |
2665 | break; | |
2666 | default: | |
2667 | ISCSI_DBG_TRANS_CONN(conn, "Got conn error in state %d\n", | |
2668 | state); | |
2669 | break; | |
2670 | } | |
7c6e99c1 | 2671 | spin_unlock_irqrestore(&conn->lock, flags); |
0896b752 | 2672 | |
790f39a2 MC |
2673 | priv = iscsi_if_transport_lookup(conn->transport); |
2674 | if (!priv) | |
2675 | return; | |
2676 | ||
43a145a3 | 2677 | skb = alloc_skb(len, GFP_ATOMIC); |
0896b752 | 2678 | if (!skb) { |
322d739d MC |
2679 | iscsi_cls_conn_printk(KERN_ERR, conn, "gracefully ignored " |
2680 | "conn error (%d)\n", error); | |
0896b752 AA |
2681 | return; |
2682 | } | |
2683 | ||
43514774 | 2684 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); |
e07ebea0 | 2685 | ev = nlmsg_data(nlh); |
0896b752 AA |
2686 | ev->transport_handle = iscsi_handle(conn->transport); |
2687 | ev->type = ISCSI_KEVENT_CONN_ERROR; | |
0896b752 | 2688 | ev->r.connerror.error = error; |
b5c7a12d MC |
2689 | ev->r.connerror.cid = conn->cid; |
2690 | ev->r.connerror.sid = iscsi_conn_get_sid(conn); | |
1da177e4 | 2691 | |
43514774 | 2692 | iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_ATOMIC); |
1da177e4 | 2693 | |
322d739d MC |
2694 | iscsi_cls_conn_printk(KERN_INFO, conn, "detected conn error (%d)\n", |
2695 | error); | |
0896b752 | 2696 | } |
e5bd7b54 | 2697 | EXPORT_SYMBOL_GPL(iscsi_conn_error_event); |
0896b752 | 2698 | |
17fa575e MR |
2699 | void iscsi_conn_login_event(struct iscsi_cls_conn *conn, |
2700 | enum iscsi_conn_state state) | |
2701 | { | |
2702 | struct nlmsghdr *nlh; | |
2703 | struct sk_buff *skb; | |
2704 | struct iscsi_uevent *ev; | |
2705 | struct iscsi_internal *priv; | |
e07ebea0 | 2706 | int len = nlmsg_total_size(sizeof(*ev)); |
17fa575e MR |
2707 | |
2708 | priv = iscsi_if_transport_lookup(conn->transport); | |
2709 | if (!priv) | |
2710 | return; | |
2711 | ||
2712 | skb = alloc_skb(len, GFP_ATOMIC); | |
2713 | if (!skb) { | |
2714 | iscsi_cls_conn_printk(KERN_ERR, conn, "gracefully ignored " | |
2715 | "conn login (%d)\n", state); | |
2716 | return; | |
2717 | } | |
2718 | ||
2719 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); | |
e07ebea0 | 2720 | ev = nlmsg_data(nlh); |
17fa575e MR |
2721 | ev->transport_handle = iscsi_handle(conn->transport); |
2722 | ev->type = ISCSI_KEVENT_CONN_LOGIN_STATE; | |
2723 | ev->r.conn_login.state = state; | |
2724 | ev->r.conn_login.cid = conn->cid; | |
2725 | ev->r.conn_login.sid = iscsi_conn_get_sid(conn); | |
2726 | iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_ATOMIC); | |
2727 | ||
2728 | iscsi_cls_conn_printk(KERN_INFO, conn, "detected conn login (%d)\n", | |
2729 | state); | |
2730 | } | |
2731 | EXPORT_SYMBOL_GPL(iscsi_conn_login_event); | |
2732 | ||
a11e2545 VC |
2733 | void iscsi_post_host_event(uint32_t host_no, struct iscsi_transport *transport, |
2734 | enum iscsi_host_event_code code, uint32_t data_size, | |
2735 | uint8_t *data) | |
2736 | { | |
2737 | struct nlmsghdr *nlh; | |
2738 | struct sk_buff *skb; | |
2739 | struct iscsi_uevent *ev; | |
e07ebea0 | 2740 | int len = nlmsg_total_size(sizeof(*ev) + data_size); |
a11e2545 | 2741 | |
49d0e64b | 2742 | skb = alloc_skb(len, GFP_NOIO); |
a11e2545 VC |
2743 | if (!skb) { |
2744 | printk(KERN_ERR "gracefully ignored host event (%d):%d OOM\n", | |
2745 | host_no, code); | |
2746 | return; | |
2747 | } | |
2748 | ||
2749 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); | |
e07ebea0 | 2750 | ev = nlmsg_data(nlh); |
a11e2545 VC |
2751 | ev->transport_handle = iscsi_handle(transport); |
2752 | ev->type = ISCSI_KEVENT_HOST_EVENT; | |
2753 | ev->r.host_event.host_no = host_no; | |
2754 | ev->r.host_event.code = code; | |
2755 | ev->r.host_event.data_size = data_size; | |
2756 | ||
2757 | if (data_size) | |
2758 | memcpy((char *)ev + sizeof(*ev), data, data_size); | |
2759 | ||
49d0e64b | 2760 | iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_NOIO); |
a11e2545 VC |
2761 | } |
2762 | EXPORT_SYMBOL_GPL(iscsi_post_host_event); | |
2763 | ||
ac20c7bf VC |
2764 | void iscsi_ping_comp_event(uint32_t host_no, struct iscsi_transport *transport, |
2765 | uint32_t status, uint32_t pid, uint32_t data_size, | |
2766 | uint8_t *data) | |
2767 | { | |
2768 | struct nlmsghdr *nlh; | |
2769 | struct sk_buff *skb; | |
2770 | struct iscsi_uevent *ev; | |
e07ebea0 | 2771 | int len = nlmsg_total_size(sizeof(*ev) + data_size); |
ac20c7bf | 2772 | |
49d0e64b | 2773 | skb = alloc_skb(len, GFP_NOIO); |
ac20c7bf VC |
2774 | if (!skb) { |
2775 | printk(KERN_ERR "gracefully ignored ping comp: OOM\n"); | |
2776 | return; | |
2777 | } | |
2778 | ||
2779 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); | |
e07ebea0 | 2780 | ev = nlmsg_data(nlh); |
ac20c7bf VC |
2781 | ev->transport_handle = iscsi_handle(transport); |
2782 | ev->type = ISCSI_KEVENT_PING_COMP; | |
2783 | ev->r.ping_comp.host_no = host_no; | |
2784 | ev->r.ping_comp.status = status; | |
2785 | ev->r.ping_comp.pid = pid; | |
2786 | ev->r.ping_comp.data_size = data_size; | |
2787 | memcpy((char *)ev + sizeof(*ev), data, data_size); | |
2788 | ||
49d0e64b | 2789 | iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_NOIO); |
ac20c7bf VC |
2790 | } |
2791 | EXPORT_SYMBOL_GPL(iscsi_ping_comp_event); | |
2792 | ||
0896b752 | 2793 | static int |
af170928 | 2794 | iscsi_if_send_reply(u32 portid, int type, void *payload, int size) |
0896b752 AA |
2795 | { |
2796 | struct sk_buff *skb; | |
2797 | struct nlmsghdr *nlh; | |
e07ebea0 | 2798 | int len = nlmsg_total_size(size); |
0896b752 | 2799 | |
43a145a3 | 2800 | skb = alloc_skb(len, GFP_ATOMIC); |
239a7dc2 MC |
2801 | if (!skb) { |
2802 | printk(KERN_ERR "Could not allocate skb to send reply.\n"); | |
2803 | return -ENOMEM; | |
2804 | } | |
0896b752 | 2805 | |
af170928 | 2806 | nlh = __nlmsg_put(skb, 0, 0, type, (len - sizeof(*nlh)), 0); |
e07ebea0 | 2807 | memcpy(nlmsg_data(nlh), payload, size); |
af170928 | 2808 | return iscsi_unicast_skb(skb, portid); |
1da177e4 | 2809 | } |
1da177e4 | 2810 | |
7b8631b5 | 2811 | static int |
5b940adf | 2812 | iscsi_if_get_stats(struct iscsi_transport *transport, struct nlmsghdr *nlh) |
7b8631b5 | 2813 | { |
e07ebea0 | 2814 | struct iscsi_uevent *ev = nlmsg_data(nlh); |
7b8631b5 MC |
2815 | struct iscsi_stats *stats; |
2816 | struct sk_buff *skbstat; | |
2817 | struct iscsi_cls_conn *conn; | |
2818 | struct nlmsghdr *nlhstat; | |
2819 | struct iscsi_uevent *evstat; | |
790f39a2 | 2820 | struct iscsi_internal *priv; |
e07ebea0 H |
2821 | int len = nlmsg_total_size(sizeof(*ev) + |
2822 | sizeof(struct iscsi_stats) + | |
2823 | sizeof(struct iscsi_stats_custom) * | |
2824 | ISCSI_STATS_CUSTOM_MAX); | |
7b8631b5 | 2825 | int err = 0; |
0896b752 | 2826 | |
790f39a2 MC |
2827 | priv = iscsi_if_transport_lookup(transport); |
2828 | if (!priv) | |
2829 | return -EINVAL; | |
2830 | ||
b5c7a12d | 2831 | conn = iscsi_conn_lookup(ev->u.get_stats.sid, ev->u.get_stats.cid); |
7b8631b5 MC |
2832 | if (!conn) |
2833 | return -EEXIST; | |
0896b752 | 2834 | |
7b8631b5 MC |
2835 | do { |
2836 | int actual_size; | |
0896b752 | 2837 | |
43a145a3 | 2838 | skbstat = alloc_skb(len, GFP_ATOMIC); |
7b8631b5 | 2839 | if (!skbstat) { |
322d739d MC |
2840 | iscsi_cls_conn_printk(KERN_ERR, conn, "can not " |
2841 | "deliver stats: OOM\n"); | |
7b8631b5 MC |
2842 | return -ENOMEM; |
2843 | } | |
2844 | ||
43514774 | 2845 | nlhstat = __nlmsg_put(skbstat, 0, 0, 0, |
7b8631b5 | 2846 | (len - sizeof(*nlhstat)), 0); |
e07ebea0 | 2847 | evstat = nlmsg_data(nlhstat); |
7b8631b5 MC |
2848 | memset(evstat, 0, sizeof(*evstat)); |
2849 | evstat->transport_handle = iscsi_handle(conn->transport); | |
2850 | evstat->type = nlh->nlmsg_type; | |
b5c7a12d MC |
2851 | evstat->u.get_stats.cid = |
2852 | ev->u.get_stats.cid; | |
2853 | evstat->u.get_stats.sid = | |
2854 | ev->u.get_stats.sid; | |
7b8631b5 MC |
2855 | stats = (struct iscsi_stats *) |
2856 | ((char*)evstat + sizeof(*evstat)); | |
2857 | memset(stats, 0, sizeof(*stats)); | |
2858 | ||
7b7232f3 | 2859 | transport->get_stats(conn, stats); |
e07ebea0 H |
2860 | actual_size = nlmsg_total_size(sizeof(struct iscsi_uevent) + |
2861 | sizeof(struct iscsi_stats) + | |
2862 | sizeof(struct iscsi_stats_custom) * | |
2863 | stats->custom_length); | |
7b8631b5 | 2864 | actual_size -= sizeof(*nlhstat); |
e07ebea0 | 2865 | actual_size = nlmsg_msg_size(actual_size); |
5b940adf | 2866 | skb_trim(skbstat, NLMSG_ALIGN(actual_size)); |
7b8631b5 MC |
2867 | nlhstat->nlmsg_len = actual_size; |
2868 | ||
43514774 MC |
2869 | err = iscsi_multicast_skb(skbstat, ISCSI_NL_GRP_ISCSID, |
2870 | GFP_ATOMIC); | |
7b8631b5 MC |
2871 | } while (err < 0 && err != -ECONNREFUSED); |
2872 | ||
2873 | return err; | |
0896b752 AA |
2874 | } |
2875 | ||
53cb8a1f | 2876 | /** |
26974789 MC |
2877 | * iscsi_session_event - send session destr. completion event |
2878 | * @session: iscsi class session | |
2879 | * @event: type of event | |
eb44820c | 2880 | */ |
26974789 MC |
2881 | int iscsi_session_event(struct iscsi_cls_session *session, |
2882 | enum iscsi_uevent_e event) | |
53cb8a1f MC |
2883 | { |
2884 | struct iscsi_internal *priv; | |
53cb8a1f MC |
2885 | struct Scsi_Host *shost; |
2886 | struct iscsi_uevent *ev; | |
2887 | struct sk_buff *skb; | |
2888 | struct nlmsghdr *nlh; | |
e07ebea0 | 2889 | int rc, len = nlmsg_total_size(sizeof(*ev)); |
53cb8a1f | 2890 | |
26974789 | 2891 | priv = iscsi_if_transport_lookup(session->transport); |
53cb8a1f MC |
2892 | if (!priv) |
2893 | return -EINVAL; | |
53cb8a1f MC |
2894 | shost = iscsi_session_to_shost(session); |
2895 | ||
43a145a3 | 2896 | skb = alloc_skb(len, GFP_KERNEL); |
53cb8a1f | 2897 | if (!skb) { |
322d739d MC |
2898 | iscsi_cls_session_printk(KERN_ERR, session, |
2899 | "Cannot notify userspace of session " | |
2900 | "event %u\n", event); | |
53cb8a1f MC |
2901 | return -ENOMEM; |
2902 | } | |
2903 | ||
43514774 | 2904 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); |
e07ebea0 | 2905 | ev = nlmsg_data(nlh); |
26974789 | 2906 | ev->transport_handle = iscsi_handle(session->transport); |
53cb8a1f | 2907 | |
26974789 MC |
2908 | ev->type = event; |
2909 | switch (event) { | |
2910 | case ISCSI_KEVENT_DESTROY_SESSION: | |
2911 | ev->r.d_session.host_no = shost->host_no; | |
2912 | ev->r.d_session.sid = session->sid; | |
2913 | break; | |
2914 | case ISCSI_KEVENT_CREATE_SESSION: | |
2915 | ev->r.c_session_ret.host_no = shost->host_no; | |
2916 | ev->r.c_session_ret.sid = session->sid; | |
2917 | break; | |
2918 | case ISCSI_KEVENT_UNBIND_SESSION: | |
2919 | ev->r.unbind_session.host_no = shost->host_no; | |
2920 | ev->r.unbind_session.sid = session->sid; | |
2921 | break; | |
2922 | default: | |
322d739d MC |
2923 | iscsi_cls_session_printk(KERN_ERR, session, "Invalid event " |
2924 | "%u.\n", event); | |
26974789 | 2925 | kfree_skb(skb); |
53cb8a1f | 2926 | return -EINVAL; |
53cb8a1f MC |
2927 | } |
2928 | ||
53cb8a1f MC |
2929 | /* |
2930 | * this will occur if the daemon is not up, so we just warn | |
2931 | * the user and when the daemon is restarted it will handle it | |
2932 | */ | |
43514774 | 2933 | rc = iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_KERNEL); |
ff491a73 | 2934 | if (rc == -ESRCH) |
322d739d MC |
2935 | iscsi_cls_session_printk(KERN_ERR, session, |
2936 | "Cannot notify userspace of session " | |
2937 | "event %u. Check iscsi daemon\n", | |
2938 | event); | |
632248aa MC |
2939 | |
2940 | ISCSI_DBG_TRANS_SESSION(session, "Completed handling event %d rc %d\n", | |
2941 | event, rc); | |
53cb8a1f MC |
2942 | return rc; |
2943 | } | |
26974789 | 2944 | EXPORT_SYMBOL_GPL(iscsi_session_event); |
53cb8a1f | 2945 | |
0896b752 | 2946 | static int |
d82ff9be | 2947 | iscsi_if_create_session(struct iscsi_internal *priv, struct iscsi_endpoint *ep, |
0c70d84b MC |
2948 | struct iscsi_uevent *ev, pid_t pid, |
2949 | uint32_t initial_cmdsn, uint16_t cmds_max, | |
2950 | uint16_t queue_depth) | |
0896b752 AA |
2951 | { |
2952 | struct iscsi_transport *transport = priv->iscsi_transport; | |
7b7232f3 | 2953 | struct iscsi_cls_session *session; |
5e7facb7 | 2954 | struct Scsi_Host *shost; |
0896b752 | 2955 | |
d82ff9be | 2956 | session = transport->create_session(ep, cmds_max, queue_depth, |
5e7facb7 | 2957 | initial_cmdsn); |
7b7232f3 | 2958 | if (!session) |
7b8631b5 | 2959 | return -ENOMEM; |
0896b752 | 2960 | |
0c70d84b | 2961 | session->creator = pid; |
5e7facb7 MC |
2962 | shost = iscsi_session_to_shost(session); |
2963 | ev->r.c_session_ret.host_no = shost->host_no; | |
b5c7a12d | 2964 | ev->r.c_session_ret.sid = session->sid; |
632248aa MC |
2965 | ISCSI_DBG_TRANS_SESSION(session, |
2966 | "Completed creating transport session\n"); | |
0896b752 | 2967 | return 0; |
0896b752 AA |
2968 | } |
2969 | ||
2970 | static int | |
7b7232f3 | 2971 | iscsi_if_create_conn(struct iscsi_transport *transport, struct iscsi_uevent *ev) |
0896b752 | 2972 | { |
7b8631b5 | 2973 | struct iscsi_cls_conn *conn; |
7b7232f3 | 2974 | struct iscsi_cls_session *session; |
7b8631b5 | 2975 | |
b5c7a12d MC |
2976 | session = iscsi_session_lookup(ev->u.c_conn.sid); |
2977 | if (!session) { | |
322d739d | 2978 | printk(KERN_ERR "iscsi: invalid session %d.\n", |
b5c7a12d | 2979 | ev->u.c_conn.sid); |
7b8631b5 | 2980 | return -EINVAL; |
b5c7a12d | 2981 | } |
0896b752 | 2982 | |
7b7232f3 | 2983 | conn = transport->create_conn(session, ev->u.c_conn.cid); |
b5c7a12d | 2984 | if (!conn) { |
322d739d MC |
2985 | iscsi_cls_session_printk(KERN_ERR, session, |
2986 | "couldn't create a new connection."); | |
7b7232f3 | 2987 | return -ENOMEM; |
b5c7a12d | 2988 | } |
0896b752 | 2989 | |
b5c7a12d MC |
2990 | ev->r.c_conn_ret.sid = session->sid; |
2991 | ev->r.c_conn_ret.cid = conn->cid; | |
632248aa MC |
2992 | |
2993 | ISCSI_DBG_TRANS_CONN(conn, "Completed creating transport conn\n"); | |
0896b752 | 2994 | return 0; |
1da177e4 LT |
2995 | } |
2996 | ||
0896b752 AA |
2997 | static int |
2998 | iscsi_if_destroy_conn(struct iscsi_transport *transport, struct iscsi_uevent *ev) | |
2999 | { | |
7b8631b5 | 3000 | struct iscsi_cls_conn *conn; |
0896b752 | 3001 | |
b5c7a12d | 3002 | conn = iscsi_conn_lookup(ev->u.d_conn.sid, ev->u.d_conn.cid); |
0896b752 | 3003 | if (!conn) |
7b8631b5 | 3004 | return -EINVAL; |
0896b752 | 3005 | |
23d6fefb MC |
3006 | ISCSI_DBG_TRANS_CONN(conn, "Flushing cleanup during destruction\n"); |
3007 | flush_work(&conn->cleanup_work); | |
632248aa | 3008 | ISCSI_DBG_TRANS_CONN(conn, "Destroying transport conn\n"); |
7e7cd796 | 3009 | |
7b8631b5 MC |
3010 | if (transport->destroy_conn) |
3011 | transport->destroy_conn(conn); | |
7b8631b5 | 3012 | return 0; |
0896b752 AA |
3013 | } |
3014 | ||
fd7255f5 | 3015 | static int |
0c26a2d7 | 3016 | iscsi_if_set_param(struct iscsi_transport *transport, struct iscsi_uevent *ev) |
fd7255f5 MC |
3017 | { |
3018 | char *data = (char*)ev + sizeof(*ev); | |
3019 | struct iscsi_cls_conn *conn; | |
3020 | struct iscsi_cls_session *session; | |
03690d81 | 3021 | int err = 0, value = 0, state; |
fd7255f5 | 3022 | |
ec98ea70 CL |
3023 | if (ev->u.set_param.len > PAGE_SIZE) |
3024 | return -EINVAL; | |
3025 | ||
fd7255f5 MC |
3026 | session = iscsi_session_lookup(ev->u.set_param.sid); |
3027 | conn = iscsi_conn_lookup(ev->u.set_param.sid, ev->u.set_param.cid); | |
3028 | if (!conn || !session) | |
3029 | return -EINVAL; | |
3030 | ||
3031 | switch (ev->u.set_param.param) { | |
30a6c652 | 3032 | case ISCSI_PARAM_SESS_RECOVERY_TMO: |
a54a52ca | 3033 | sscanf(data, "%d", &value); |
9c8108a4 CL |
3034 | if (!session->recovery_tmo_sysfs_override) |
3035 | session->recovery_tmo = value; | |
30a6c652 | 3036 | break; |
fd7255f5 | 3037 | default: |
03690d81 MC |
3038 | state = READ_ONCE(conn->state); |
3039 | if (state == ISCSI_CONN_BOUND || state == ISCSI_CONN_UP) { | |
9e67600e GM |
3040 | err = transport->set_param(conn, ev->u.set_param.param, |
3041 | data, ev->u.set_param.len); | |
3042 | } else { | |
3043 | return -ENOTCONN; | |
3044 | } | |
fd7255f5 MC |
3045 | } |
3046 | ||
3047 | return err; | |
3048 | } | |
3049 | ||
10eb0f01 MC |
3050 | static int iscsi_if_ep_connect(struct iscsi_transport *transport, |
3051 | struct iscsi_uevent *ev, int msg_type) | |
3052 | { | |
3053 | struct iscsi_endpoint *ep; | |
3054 | struct sockaddr *dst_addr; | |
3055 | struct Scsi_Host *shost = NULL; | |
3056 | int non_blocking, err = 0; | |
3057 | ||
3058 | if (!transport->ep_connect) | |
3059 | return -EINVAL; | |
3060 | ||
3061 | if (msg_type == ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST) { | |
3062 | shost = scsi_host_lookup(ev->u.ep_connect_through_host.host_no); | |
3063 | if (!shost) { | |
3064 | printk(KERN_ERR "ep connect failed. Could not find " | |
3065 | "host no %u\n", | |
3066 | ev->u.ep_connect_through_host.host_no); | |
3067 | return -ENODEV; | |
3068 | } | |
3069 | non_blocking = ev->u.ep_connect_through_host.non_blocking; | |
3070 | } else | |
3071 | non_blocking = ev->u.ep_connect.non_blocking; | |
3072 | ||
3073 | dst_addr = (struct sockaddr *)((char*)ev + sizeof(*ev)); | |
3074 | ep = transport->ep_connect(shost, dst_addr, non_blocking); | |
3075 | if (IS_ERR(ep)) { | |
3076 | err = PTR_ERR(ep); | |
3077 | goto release_host; | |
3078 | } | |
3079 | ||
3080 | ev->r.ep_connect_ret.handle = ep->id; | |
3081 | release_host: | |
3082 | if (shost) | |
3083 | scsi_host_put(shost); | |
3084 | return err; | |
3085 | } | |
3086 | ||
22a39fbb | 3087 | static int iscsi_if_ep_disconnect(struct iscsi_transport *transport, |
23d6fefb | 3088 | u64 ep_handle) |
22a39fbb MC |
3089 | { |
3090 | struct iscsi_cls_conn *conn; | |
3091 | struct iscsi_endpoint *ep; | |
3092 | ||
3093 | if (!transport->ep_disconnect) | |
3094 | return -EINVAL; | |
3095 | ||
3096 | ep = iscsi_lookup_endpoint(ep_handle); | |
3097 | if (!ep) | |
3098 | return -EINVAL; | |
23d6fefb | 3099 | |
22a39fbb | 3100 | conn = ep->conn; |
23d6fefb MC |
3101 | if (!conn) { |
3102 | /* | |
3103 | * conn was not even bound yet, so we can't get iscsi conn | |
3104 | * failures yet. | |
3105 | */ | |
3106 | transport->ep_disconnect(ep); | |
3107 | goto put_ep; | |
3108 | } | |
3109 | ||
3110 | mutex_lock(&conn->ep_mutex); | |
cbd2283a | 3111 | iscsi_if_disconnect_bound_ep(conn, ep, false); |
23d6fefb MC |
3112 | mutex_unlock(&conn->ep_mutex); |
3113 | put_ep: | |
9e5fe170 | 3114 | iscsi_put_endpoint(ep); |
22a39fbb MC |
3115 | return 0; |
3116 | } | |
3117 | ||
264faaaa OG |
3118 | static int |
3119 | iscsi_if_transport_ep(struct iscsi_transport *transport, | |
3120 | struct iscsi_uevent *ev, int msg_type) | |
3121 | { | |
d82ff9be | 3122 | struct iscsi_endpoint *ep; |
264faaaa OG |
3123 | int rc = 0; |
3124 | ||
3125 | switch (msg_type) { | |
10eb0f01 | 3126 | case ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST: |
264faaaa | 3127 | case ISCSI_UEVENT_TRANSPORT_EP_CONNECT: |
10eb0f01 | 3128 | rc = iscsi_if_ep_connect(transport, ev, msg_type); |
264faaaa OG |
3129 | break; |
3130 | case ISCSI_UEVENT_TRANSPORT_EP_POLL: | |
3131 | if (!transport->ep_poll) | |
3132 | return -EINVAL; | |
3133 | ||
d82ff9be MC |
3134 | ep = iscsi_lookup_endpoint(ev->u.ep_poll.ep_handle); |
3135 | if (!ep) | |
3136 | return -EINVAL; | |
3137 | ||
3138 | ev->r.retcode = transport->ep_poll(ep, | |
264faaaa | 3139 | ev->u.ep_poll.timeout_ms); |
9e5fe170 | 3140 | iscsi_put_endpoint(ep); |
264faaaa OG |
3141 | break; |
3142 | case ISCSI_UEVENT_TRANSPORT_EP_DISCONNECT: | |
22a39fbb | 3143 | rc = iscsi_if_ep_disconnect(transport, |
23d6fefb | 3144 | ev->u.ep_disconnect.ep_handle); |
264faaaa OG |
3145 | break; |
3146 | } | |
3147 | return rc; | |
3148 | } | |
3149 | ||
01cb225d MC |
3150 | static int |
3151 | iscsi_tgt_dscvr(struct iscsi_transport *transport, | |
3152 | struct iscsi_uevent *ev) | |
3153 | { | |
2174a04e | 3154 | struct Scsi_Host *shost; |
01cb225d | 3155 | struct sockaddr *dst_addr; |
2174a04e | 3156 | int err; |
01cb225d MC |
3157 | |
3158 | if (!transport->tgt_dscvr) | |
3159 | return -EINVAL; | |
3160 | ||
2174a04e | 3161 | shost = scsi_host_lookup(ev->u.tgt_dscvr.host_no); |
315cb0ad | 3162 | if (!shost) { |
2174a04e MC |
3163 | printk(KERN_ERR "target discovery could not find host no %u\n", |
3164 | ev->u.tgt_dscvr.host_no); | |
3165 | return -ENODEV; | |
3166 | } | |
3167 | ||
3168 | ||
01cb225d | 3169 | dst_addr = (struct sockaddr *)((char*)ev + sizeof(*ev)); |
2174a04e MC |
3170 | err = transport->tgt_dscvr(shost, ev->u.tgt_dscvr.type, |
3171 | ev->u.tgt_dscvr.enable, dst_addr); | |
3172 | scsi_host_put(shost); | |
3173 | return err; | |
01cb225d MC |
3174 | } |
3175 | ||
1d9bf13a MC |
3176 | static int |
3177 | iscsi_set_host_param(struct iscsi_transport *transport, | |
3178 | struct iscsi_uevent *ev) | |
3179 | { | |
3180 | char *data = (char*)ev + sizeof(*ev); | |
3181 | struct Scsi_Host *shost; | |
3182 | int err; | |
3183 | ||
3184 | if (!transport->set_host_param) | |
3185 | return -ENOSYS; | |
3186 | ||
ec98ea70 CL |
3187 | if (ev->u.set_host_param.len > PAGE_SIZE) |
3188 | return -EINVAL; | |
3189 | ||
1d9bf13a | 3190 | shost = scsi_host_lookup(ev->u.set_host_param.host_no); |
315cb0ad | 3191 | if (!shost) { |
1d9bf13a MC |
3192 | printk(KERN_ERR "set_host_param could not find host no %u\n", |
3193 | ev->u.set_host_param.host_no); | |
3194 | return -ENODEV; | |
3195 | } | |
3196 | ||
3197 | err = transport->set_host_param(shost, ev->u.set_host_param.param, | |
3198 | data, ev->u.set_host_param.len); | |
3199 | scsi_host_put(shost); | |
3200 | return err; | |
3201 | } | |
3202 | ||
0896b752 | 3203 | static int |
43514774 MC |
3204 | iscsi_set_path(struct iscsi_transport *transport, struct iscsi_uevent *ev) |
3205 | { | |
3206 | struct Scsi_Host *shost; | |
3207 | struct iscsi_path *params; | |
3208 | int err; | |
3209 | ||
3210 | if (!transport->set_path) | |
3211 | return -ENOSYS; | |
3212 | ||
3213 | shost = scsi_host_lookup(ev->u.set_path.host_no); | |
3214 | if (!shost) { | |
3215 | printk(KERN_ERR "set path could not find host no %u\n", | |
3216 | ev->u.set_path.host_no); | |
3217 | return -ENODEV; | |
3218 | } | |
3219 | ||
3220 | params = (struct iscsi_path *)((char *)ev + sizeof(*ev)); | |
3221 | err = transport->set_path(shost, params); | |
3222 | ||
3223 | scsi_host_put(shost); | |
3224 | return err; | |
3225 | } | |
3226 | ||
54155ed4 NB |
3227 | static int iscsi_session_has_conns(int sid) |
3228 | { | |
3229 | struct iscsi_cls_conn *conn; | |
3230 | unsigned long flags; | |
3231 | int found = 0; | |
3232 | ||
3233 | spin_lock_irqsave(&connlock, flags); | |
3234 | list_for_each_entry(conn, &connlist, conn_list) { | |
3235 | if (iscsi_conn_get_sid(conn) == sid) { | |
3236 | found = 1; | |
3237 | break; | |
3238 | } | |
3239 | } | |
3240 | spin_unlock_irqrestore(&connlock, flags); | |
3241 | ||
3242 | return found; | |
3243 | } | |
3244 | ||
56c155b5 MC |
3245 | static int |
3246 | iscsi_set_iface_params(struct iscsi_transport *transport, | |
00c31889 | 3247 | struct iscsi_uevent *ev, uint32_t len) |
56c155b5 MC |
3248 | { |
3249 | char *data = (char *)ev + sizeof(*ev); | |
3250 | struct Scsi_Host *shost; | |
3251 | int err; | |
3252 | ||
3253 | if (!transport->set_iface_param) | |
3254 | return -ENOSYS; | |
3255 | ||
3256 | shost = scsi_host_lookup(ev->u.set_iface_params.host_no); | |
3257 | if (!shost) { | |
3258 | printk(KERN_ERR "set_iface_params could not find host no %u\n", | |
3259 | ev->u.set_iface_params.host_no); | |
3260 | return -ENODEV; | |
3261 | } | |
3262 | ||
00c31889 | 3263 | err = transport->set_iface_param(shost, data, len); |
56c155b5 MC |
3264 | scsi_host_put(shost); |
3265 | return err; | |
3266 | } | |
3267 | ||
ac20c7bf VC |
3268 | static int |
3269 | iscsi_send_ping(struct iscsi_transport *transport, struct iscsi_uevent *ev) | |
3270 | { | |
3271 | struct Scsi_Host *shost; | |
3272 | struct sockaddr *dst_addr; | |
3273 | int err; | |
3274 | ||
3275 | if (!transport->send_ping) | |
3276 | return -ENOSYS; | |
3277 | ||
3278 | shost = scsi_host_lookup(ev->u.iscsi_ping.host_no); | |
3279 | if (!shost) { | |
3280 | printk(KERN_ERR "iscsi_ping could not find host no %u\n", | |
3281 | ev->u.iscsi_ping.host_no); | |
3282 | return -ENODEV; | |
3283 | } | |
3284 | ||
3285 | dst_addr = (struct sockaddr *)((char *)ev + sizeof(*ev)); | |
3286 | err = transport->send_ping(shost, ev->u.iscsi_ping.iface_num, | |
3287 | ev->u.iscsi_ping.iface_type, | |
3288 | ev->u.iscsi_ping.payload_size, | |
3289 | ev->u.iscsi_ping.pid, | |
3290 | dst_addr); | |
3291 | scsi_host_put(shost); | |
3292 | return err; | |
3293 | } | |
3294 | ||
6260a5d2 NJ |
3295 | static int |
3296 | iscsi_get_chap(struct iscsi_transport *transport, struct nlmsghdr *nlh) | |
3297 | { | |
e07ebea0 | 3298 | struct iscsi_uevent *ev = nlmsg_data(nlh); |
6260a5d2 NJ |
3299 | struct Scsi_Host *shost = NULL; |
3300 | struct iscsi_chap_rec *chap_rec; | |
3301 | struct iscsi_internal *priv; | |
3302 | struct sk_buff *skbchap; | |
3303 | struct nlmsghdr *nlhchap; | |
3304 | struct iscsi_uevent *evchap; | |
3305 | uint32_t chap_buf_size; | |
3306 | int len, err = 0; | |
3307 | char *buf; | |
3308 | ||
3309 | if (!transport->get_chap) | |
3310 | return -EINVAL; | |
3311 | ||
3312 | priv = iscsi_if_transport_lookup(transport); | |
3313 | if (!priv) | |
3314 | return -EINVAL; | |
3315 | ||
3316 | chap_buf_size = (ev->u.get_chap.num_entries * sizeof(*chap_rec)); | |
e07ebea0 | 3317 | len = nlmsg_total_size(sizeof(*ev) + chap_buf_size); |
6260a5d2 NJ |
3318 | |
3319 | shost = scsi_host_lookup(ev->u.get_chap.host_no); | |
3320 | if (!shost) { | |
804ff603 | 3321 | printk(KERN_ERR "%s: failed. Could not find host no %u\n", |
6260a5d2 NJ |
3322 | __func__, ev->u.get_chap.host_no); |
3323 | return -ENODEV; | |
3324 | } | |
3325 | ||
3326 | do { | |
3327 | int actual_size; | |
3328 | ||
3329 | skbchap = alloc_skb(len, GFP_KERNEL); | |
3330 | if (!skbchap) { | |
3331 | printk(KERN_ERR "can not deliver chap: OOM\n"); | |
3332 | err = -ENOMEM; | |
3333 | goto exit_get_chap; | |
3334 | } | |
3335 | ||
3336 | nlhchap = __nlmsg_put(skbchap, 0, 0, 0, | |
3337 | (len - sizeof(*nlhchap)), 0); | |
e07ebea0 | 3338 | evchap = nlmsg_data(nlhchap); |
6260a5d2 NJ |
3339 | memset(evchap, 0, sizeof(*evchap)); |
3340 | evchap->transport_handle = iscsi_handle(transport); | |
3341 | evchap->type = nlh->nlmsg_type; | |
3342 | evchap->u.get_chap.host_no = ev->u.get_chap.host_no; | |
3343 | evchap->u.get_chap.chap_tbl_idx = ev->u.get_chap.chap_tbl_idx; | |
3344 | evchap->u.get_chap.num_entries = ev->u.get_chap.num_entries; | |
a799cb77 | 3345 | buf = (char *)evchap + sizeof(*evchap); |
6260a5d2 NJ |
3346 | memset(buf, 0, chap_buf_size); |
3347 | ||
3348 | err = transport->get_chap(shost, ev->u.get_chap.chap_tbl_idx, | |
3349 | &evchap->u.get_chap.num_entries, buf); | |
3350 | ||
e07ebea0 | 3351 | actual_size = nlmsg_total_size(sizeof(*ev) + chap_buf_size); |
6260a5d2 NJ |
3352 | skb_trim(skbchap, NLMSG_ALIGN(actual_size)); |
3353 | nlhchap->nlmsg_len = actual_size; | |
3354 | ||
3355 | err = iscsi_multicast_skb(skbchap, ISCSI_NL_GRP_ISCSID, | |
3356 | GFP_KERNEL); | |
3357 | } while (err < 0 && err != -ECONNREFUSED); | |
3358 | ||
3359 | exit_get_chap: | |
3360 | scsi_host_put(shost); | |
3361 | return err; | |
3362 | } | |
3363 | ||
3af142fe AC |
3364 | static int iscsi_set_chap(struct iscsi_transport *transport, |
3365 | struct iscsi_uevent *ev, uint32_t len) | |
3366 | { | |
3367 | char *data = (char *)ev + sizeof(*ev); | |
3368 | struct Scsi_Host *shost; | |
3369 | int err = 0; | |
3370 | ||
3371 | if (!transport->set_chap) | |
3372 | return -ENOSYS; | |
3373 | ||
3374 | shost = scsi_host_lookup(ev->u.set_path.host_no); | |
3375 | if (!shost) { | |
3376 | pr_err("%s could not find host no %u\n", | |
3377 | __func__, ev->u.set_path.host_no); | |
3378 | return -ENODEV; | |
3379 | } | |
3380 | ||
3381 | err = transport->set_chap(shost, data, len); | |
3382 | scsi_host_put(shost); | |
3383 | return err; | |
3384 | } | |
3385 | ||
6260a5d2 NJ |
3386 | static int iscsi_delete_chap(struct iscsi_transport *transport, |
3387 | struct iscsi_uevent *ev) | |
3388 | { | |
3389 | struct Scsi_Host *shost; | |
3390 | int err = 0; | |
3391 | ||
3392 | if (!transport->delete_chap) | |
3393 | return -ENOSYS; | |
3394 | ||
3395 | shost = scsi_host_lookup(ev->u.delete_chap.host_no); | |
3396 | if (!shost) { | |
3397 | printk(KERN_ERR "%s could not find host no %u\n", | |
3398 | __func__, ev->u.delete_chap.host_no); | |
3399 | return -ENODEV; | |
3400 | } | |
3401 | ||
3402 | err = transport->delete_chap(shost, ev->u.delete_chap.chap_tbl_idx); | |
3403 | scsi_host_put(shost); | |
3404 | return err; | |
3405 | } | |
3406 | ||
c6a4bb2e AC |
3407 | static const struct { |
3408 | enum iscsi_discovery_parent_type value; | |
3409 | char *name; | |
3410 | } iscsi_discovery_parent_names[] = { | |
3411 | {ISCSI_DISC_PARENT_UNKNOWN, "Unknown" }, | |
3412 | {ISCSI_DISC_PARENT_SENDTGT, "Sendtarget" }, | |
3413 | {ISCSI_DISC_PARENT_ISNS, "isns" }, | |
3414 | }; | |
3415 | ||
3416 | char *iscsi_get_discovery_parent_name(int parent_type) | |
3417 | { | |
3418 | int i; | |
3419 | char *state = "Unknown!"; | |
3420 | ||
3421 | for (i = 0; i < ARRAY_SIZE(iscsi_discovery_parent_names); i++) { | |
3422 | if (iscsi_discovery_parent_names[i].value & parent_type) { | |
3423 | state = iscsi_discovery_parent_names[i].name; | |
3424 | break; | |
3425 | } | |
3426 | } | |
3427 | return state; | |
3428 | } | |
3429 | EXPORT_SYMBOL_GPL(iscsi_get_discovery_parent_name); | |
3430 | ||
3431 | static int iscsi_set_flashnode_param(struct iscsi_transport *transport, | |
3432 | struct iscsi_uevent *ev, uint32_t len) | |
3433 | { | |
3434 | char *data = (char *)ev + sizeof(*ev); | |
3435 | struct Scsi_Host *shost; | |
3436 | struct iscsi_bus_flash_session *fnode_sess; | |
3437 | struct iscsi_bus_flash_conn *fnode_conn; | |
3438 | struct device *dev; | |
8526cb11 | 3439 | uint32_t idx; |
c6a4bb2e AC |
3440 | int err = 0; |
3441 | ||
3442 | if (!transport->set_flashnode_param) { | |
3443 | err = -ENOSYS; | |
3444 | goto exit_set_fnode; | |
3445 | } | |
3446 | ||
3447 | shost = scsi_host_lookup(ev->u.set_flashnode.host_no); | |
3448 | if (!shost) { | |
3449 | pr_err("%s could not find host no %u\n", | |
3450 | __func__, ev->u.set_flashnode.host_no); | |
3451 | err = -ENODEV; | |
68e12e5f | 3452 | goto exit_set_fnode; |
c6a4bb2e AC |
3453 | } |
3454 | ||
8526cb11 MC |
3455 | idx = ev->u.set_flashnode.flashnode_idx; |
3456 | fnode_sess = iscsi_get_flashnode_by_index(shost, idx); | |
c6a4bb2e AC |
3457 | if (!fnode_sess) { |
3458 | pr_err("%s could not find flashnode %u for host no %u\n", | |
8526cb11 | 3459 | __func__, idx, ev->u.set_flashnode.host_no); |
c6a4bb2e AC |
3460 | err = -ENODEV; |
3461 | goto put_host; | |
3462 | } | |
3463 | ||
8526cb11 | 3464 | dev = iscsi_find_flashnode_conn(fnode_sess); |
c6a4bb2e AC |
3465 | if (!dev) { |
3466 | err = -ENODEV; | |
8526cb11 | 3467 | goto put_sess; |
c6a4bb2e AC |
3468 | } |
3469 | ||
3470 | fnode_conn = iscsi_dev_to_flash_conn(dev); | |
3471 | err = transport->set_flashnode_param(fnode_sess, fnode_conn, data, len); | |
8526cb11 MC |
3472 | put_device(dev); |
3473 | ||
3474 | put_sess: | |
3475 | put_device(&fnode_sess->dev); | |
c6a4bb2e AC |
3476 | |
3477 | put_host: | |
3478 | scsi_host_put(shost); | |
3479 | ||
3480 | exit_set_fnode: | |
3481 | return err; | |
3482 | } | |
3483 | ||
3484 | static int iscsi_new_flashnode(struct iscsi_transport *transport, | |
3485 | struct iscsi_uevent *ev, uint32_t len) | |
3486 | { | |
3487 | char *data = (char *)ev + sizeof(*ev); | |
3488 | struct Scsi_Host *shost; | |
3489 | int index; | |
3490 | int err = 0; | |
3491 | ||
3492 | if (!transport->new_flashnode) { | |
3493 | err = -ENOSYS; | |
3494 | goto exit_new_fnode; | |
3495 | } | |
3496 | ||
3497 | shost = scsi_host_lookup(ev->u.new_flashnode.host_no); | |
3498 | if (!shost) { | |
3499 | pr_err("%s could not find host no %u\n", | |
3500 | __func__, ev->u.new_flashnode.host_no); | |
3501 | err = -ENODEV; | |
3502 | goto put_host; | |
3503 | } | |
3504 | ||
3505 | index = transport->new_flashnode(shost, data, len); | |
3506 | ||
3507 | if (index >= 0) | |
3508 | ev->r.new_flashnode_ret.flashnode_idx = index; | |
3509 | else | |
3510 | err = -EIO; | |
3511 | ||
3512 | put_host: | |
3513 | scsi_host_put(shost); | |
3514 | ||
3515 | exit_new_fnode: | |
3516 | return err; | |
3517 | } | |
3518 | ||
3519 | static int iscsi_del_flashnode(struct iscsi_transport *transport, | |
3520 | struct iscsi_uevent *ev) | |
3521 | { | |
3522 | struct Scsi_Host *shost; | |
3523 | struct iscsi_bus_flash_session *fnode_sess; | |
8526cb11 | 3524 | uint32_t idx; |
c6a4bb2e AC |
3525 | int err = 0; |
3526 | ||
3527 | if (!transport->del_flashnode) { | |
3528 | err = -ENOSYS; | |
3529 | goto exit_del_fnode; | |
3530 | } | |
3531 | ||
3532 | shost = scsi_host_lookup(ev->u.del_flashnode.host_no); | |
3533 | if (!shost) { | |
3534 | pr_err("%s could not find host no %u\n", | |
3535 | __func__, ev->u.del_flashnode.host_no); | |
3536 | err = -ENODEV; | |
3537 | goto put_host; | |
3538 | } | |
3539 | ||
8526cb11 MC |
3540 | idx = ev->u.del_flashnode.flashnode_idx; |
3541 | fnode_sess = iscsi_get_flashnode_by_index(shost, idx); | |
c6a4bb2e AC |
3542 | if (!fnode_sess) { |
3543 | pr_err("%s could not find flashnode %u for host no %u\n", | |
8526cb11 | 3544 | __func__, idx, ev->u.del_flashnode.host_no); |
c6a4bb2e AC |
3545 | err = -ENODEV; |
3546 | goto put_host; | |
3547 | } | |
3548 | ||
3549 | err = transport->del_flashnode(fnode_sess); | |
8526cb11 | 3550 | put_device(&fnode_sess->dev); |
c6a4bb2e AC |
3551 | |
3552 | put_host: | |
3553 | scsi_host_put(shost); | |
3554 | ||
3555 | exit_del_fnode: | |
3556 | return err; | |
3557 | } | |
3558 | ||
3559 | static int iscsi_login_flashnode(struct iscsi_transport *transport, | |
3560 | struct iscsi_uevent *ev) | |
3561 | { | |
3562 | struct Scsi_Host *shost; | |
3563 | struct iscsi_bus_flash_session *fnode_sess; | |
3564 | struct iscsi_bus_flash_conn *fnode_conn; | |
3565 | struct device *dev; | |
8526cb11 | 3566 | uint32_t idx; |
c6a4bb2e AC |
3567 | int err = 0; |
3568 | ||
3569 | if (!transport->login_flashnode) { | |
3570 | err = -ENOSYS; | |
3571 | goto exit_login_fnode; | |
3572 | } | |
3573 | ||
3574 | shost = scsi_host_lookup(ev->u.login_flashnode.host_no); | |
3575 | if (!shost) { | |
3576 | pr_err("%s could not find host no %u\n", | |
3577 | __func__, ev->u.login_flashnode.host_no); | |
3578 | err = -ENODEV; | |
3579 | goto put_host; | |
3580 | } | |
3581 | ||
8526cb11 MC |
3582 | idx = ev->u.login_flashnode.flashnode_idx; |
3583 | fnode_sess = iscsi_get_flashnode_by_index(shost, idx); | |
c6a4bb2e AC |
3584 | if (!fnode_sess) { |
3585 | pr_err("%s could not find flashnode %u for host no %u\n", | |
8526cb11 | 3586 | __func__, idx, ev->u.login_flashnode.host_no); |
c6a4bb2e AC |
3587 | err = -ENODEV; |
3588 | goto put_host; | |
3589 | } | |
3590 | ||
8526cb11 | 3591 | dev = iscsi_find_flashnode_conn(fnode_sess); |
c6a4bb2e AC |
3592 | if (!dev) { |
3593 | err = -ENODEV; | |
8526cb11 | 3594 | goto put_sess; |
c6a4bb2e AC |
3595 | } |
3596 | ||
3597 | fnode_conn = iscsi_dev_to_flash_conn(dev); | |
3598 | err = transport->login_flashnode(fnode_sess, fnode_conn); | |
8526cb11 MC |
3599 | put_device(dev); |
3600 | ||
3601 | put_sess: | |
3602 | put_device(&fnode_sess->dev); | |
c6a4bb2e AC |
3603 | |
3604 | put_host: | |
3605 | scsi_host_put(shost); | |
3606 | ||
3607 | exit_login_fnode: | |
3608 | return err; | |
3609 | } | |
3610 | ||
3611 | static int iscsi_logout_flashnode(struct iscsi_transport *transport, | |
3612 | struct iscsi_uevent *ev) | |
3613 | { | |
3614 | struct Scsi_Host *shost; | |
3615 | struct iscsi_bus_flash_session *fnode_sess; | |
3616 | struct iscsi_bus_flash_conn *fnode_conn; | |
3617 | struct device *dev; | |
8526cb11 | 3618 | uint32_t idx; |
c6a4bb2e AC |
3619 | int err = 0; |
3620 | ||
3621 | if (!transport->logout_flashnode) { | |
3622 | err = -ENOSYS; | |
3623 | goto exit_logout_fnode; | |
3624 | } | |
3625 | ||
3626 | shost = scsi_host_lookup(ev->u.logout_flashnode.host_no); | |
3627 | if (!shost) { | |
3628 | pr_err("%s could not find host no %u\n", | |
3629 | __func__, ev->u.logout_flashnode.host_no); | |
3630 | err = -ENODEV; | |
3631 | goto put_host; | |
3632 | } | |
3633 | ||
8526cb11 MC |
3634 | idx = ev->u.logout_flashnode.flashnode_idx; |
3635 | fnode_sess = iscsi_get_flashnode_by_index(shost, idx); | |
c6a4bb2e AC |
3636 | if (!fnode_sess) { |
3637 | pr_err("%s could not find flashnode %u for host no %u\n", | |
8526cb11 | 3638 | __func__, idx, ev->u.logout_flashnode.host_no); |
c6a4bb2e AC |
3639 | err = -ENODEV; |
3640 | goto put_host; | |
3641 | } | |
3642 | ||
8526cb11 | 3643 | dev = iscsi_find_flashnode_conn(fnode_sess); |
c6a4bb2e AC |
3644 | if (!dev) { |
3645 | err = -ENODEV; | |
8526cb11 | 3646 | goto put_sess; |
c6a4bb2e AC |
3647 | } |
3648 | ||
3649 | fnode_conn = iscsi_dev_to_flash_conn(dev); | |
3650 | ||
3651 | err = transport->logout_flashnode(fnode_sess, fnode_conn); | |
8526cb11 MC |
3652 | put_device(dev); |
3653 | ||
3654 | put_sess: | |
3655 | put_device(&fnode_sess->dev); | |
c6a4bb2e AC |
3656 | |
3657 | put_host: | |
3658 | scsi_host_put(shost); | |
3659 | ||
3660 | exit_logout_fnode: | |
3661 | return err; | |
3662 | } | |
3663 | ||
3664 | static int iscsi_logout_flashnode_sid(struct iscsi_transport *transport, | |
3665 | struct iscsi_uevent *ev) | |
3666 | { | |
3667 | struct Scsi_Host *shost; | |
3668 | struct iscsi_cls_session *session; | |
3669 | int err = 0; | |
3670 | ||
3671 | if (!transport->logout_flashnode_sid) { | |
3672 | err = -ENOSYS; | |
3673 | goto exit_logout_sid; | |
3674 | } | |
3675 | ||
3676 | shost = scsi_host_lookup(ev->u.logout_flashnode_sid.host_no); | |
3677 | if (!shost) { | |
3678 | pr_err("%s could not find host no %u\n", | |
3679 | __func__, ev->u.logout_flashnode.host_no); | |
3680 | err = -ENODEV; | |
3681 | goto put_host; | |
3682 | } | |
3683 | ||
3684 | session = iscsi_session_lookup(ev->u.logout_flashnode_sid.sid); | |
3685 | if (!session) { | |
3686 | pr_err("%s could not find session id %u\n", | |
3687 | __func__, ev->u.logout_flashnode_sid.sid); | |
3688 | err = -EINVAL; | |
3689 | goto put_host; | |
3690 | } | |
3691 | ||
3692 | err = transport->logout_flashnode_sid(session); | |
3693 | ||
3694 | put_host: | |
3695 | scsi_host_put(shost); | |
3696 | ||
3697 | exit_logout_sid: | |
3698 | return err; | |
3699 | } | |
3700 | ||
6fa7c554 LC |
3701 | static int |
3702 | iscsi_get_host_stats(struct iscsi_transport *transport, struct nlmsghdr *nlh) | |
3703 | { | |
3704 | struct iscsi_uevent *ev = nlmsg_data(nlh); | |
3705 | struct Scsi_Host *shost = NULL; | |
3706 | struct iscsi_internal *priv; | |
3707 | struct sk_buff *skbhost_stats; | |
3708 | struct nlmsghdr *nlhhost_stats; | |
3709 | struct iscsi_uevent *evhost_stats; | |
3710 | int host_stats_size = 0; | |
3711 | int len, err = 0; | |
3712 | char *buf; | |
3713 | ||
3714 | if (!transport->get_host_stats) | |
719e5874 | 3715 | return -ENOSYS; |
6fa7c554 LC |
3716 | |
3717 | priv = iscsi_if_transport_lookup(transport); | |
3718 | if (!priv) | |
3719 | return -EINVAL; | |
3720 | ||
3721 | host_stats_size = sizeof(struct iscsi_offload_host_stats); | |
3722 | len = nlmsg_total_size(sizeof(*ev) + host_stats_size); | |
3723 | ||
3724 | shost = scsi_host_lookup(ev->u.get_host_stats.host_no); | |
3725 | if (!shost) { | |
013ee633 | 3726 | pr_err("%s: failed. Could not find host no %u\n", |
6fa7c554 LC |
3727 | __func__, ev->u.get_host_stats.host_no); |
3728 | return -ENODEV; | |
3729 | } | |
3730 | ||
3731 | do { | |
3732 | int actual_size; | |
3733 | ||
3734 | skbhost_stats = alloc_skb(len, GFP_KERNEL); | |
3735 | if (!skbhost_stats) { | |
3736 | pr_err("cannot deliver host stats: OOM\n"); | |
3737 | err = -ENOMEM; | |
3738 | goto exit_host_stats; | |
3739 | } | |
3740 | ||
3741 | nlhhost_stats = __nlmsg_put(skbhost_stats, 0, 0, 0, | |
3742 | (len - sizeof(*nlhhost_stats)), 0); | |
3743 | evhost_stats = nlmsg_data(nlhhost_stats); | |
3744 | memset(evhost_stats, 0, sizeof(*evhost_stats)); | |
3745 | evhost_stats->transport_handle = iscsi_handle(transport); | |
3746 | evhost_stats->type = nlh->nlmsg_type; | |
3747 | evhost_stats->u.get_host_stats.host_no = | |
3748 | ev->u.get_host_stats.host_no; | |
a799cb77 | 3749 | buf = (char *)evhost_stats + sizeof(*evhost_stats); |
6fa7c554 LC |
3750 | memset(buf, 0, host_stats_size); |
3751 | ||
3752 | err = transport->get_host_stats(shost, buf, host_stats_size); | |
2f7608fc | 3753 | if (err) { |
bfb50879 | 3754 | kfree_skb(skbhost_stats); |
2f7608fc MC |
3755 | goto exit_host_stats; |
3756 | } | |
6fa7c554 LC |
3757 | |
3758 | actual_size = nlmsg_total_size(sizeof(*ev) + host_stats_size); | |
3759 | skb_trim(skbhost_stats, NLMSG_ALIGN(actual_size)); | |
3760 | nlhhost_stats->nlmsg_len = actual_size; | |
3761 | ||
3762 | err = iscsi_multicast_skb(skbhost_stats, ISCSI_NL_GRP_ISCSID, | |
3763 | GFP_KERNEL); | |
3764 | } while (err < 0 && err != -ECONNREFUSED); | |
3765 | ||
3766 | exit_host_stats: | |
3767 | scsi_host_put(shost); | |
3768 | return err; | |
3769 | } | |
3770 | ||
23d6fefb MC |
3771 | static int iscsi_if_transport_conn(struct iscsi_transport *transport, |
3772 | struct nlmsghdr *nlh) | |
3773 | { | |
3774 | struct iscsi_uevent *ev = nlmsg_data(nlh); | |
3775 | struct iscsi_cls_session *session; | |
3776 | struct iscsi_cls_conn *conn = NULL; | |
3777 | struct iscsi_endpoint *ep; | |
3778 | uint32_t pdu_len; | |
3779 | int err = 0; | |
3780 | ||
3781 | switch (nlh->nlmsg_type) { | |
3782 | case ISCSI_UEVENT_CREATE_CONN: | |
3783 | return iscsi_if_create_conn(transport, ev); | |
3784 | case ISCSI_UEVENT_DESTROY_CONN: | |
3785 | return iscsi_if_destroy_conn(transport, ev); | |
3786 | case ISCSI_UEVENT_STOP_CONN: | |
3328333b MC |
3787 | conn = iscsi_conn_lookup(ev->u.stop_conn.sid, |
3788 | ev->u.stop_conn.cid); | |
3789 | if (!conn) | |
3790 | return -EINVAL; | |
3791 | ||
3792 | return iscsi_if_stop_conn(conn, ev->u.stop_conn.flag); | |
23d6fefb MC |
3793 | } |
3794 | ||
3795 | /* | |
3796 | * The following cmds need to be run under the ep_mutex so in kernel | |
3797 | * conn cleanup (ep_disconnect + unbind and conn) is not done while | |
3798 | * these are running. They also must not run if we have just run a conn | |
3799 | * cleanup because they would set the state in a way that might allow | |
3800 | * IO or send IO themselves. | |
3801 | */ | |
3802 | switch (nlh->nlmsg_type) { | |
3803 | case ISCSI_UEVENT_START_CONN: | |
3804 | conn = iscsi_conn_lookup(ev->u.start_conn.sid, | |
3805 | ev->u.start_conn.cid); | |
3806 | break; | |
3807 | case ISCSI_UEVENT_BIND_CONN: | |
3808 | conn = iscsi_conn_lookup(ev->u.b_conn.sid, ev->u.b_conn.cid); | |
3809 | break; | |
3810 | case ISCSI_UEVENT_SEND_PDU: | |
3811 | conn = iscsi_conn_lookup(ev->u.send_pdu.sid, ev->u.send_pdu.cid); | |
3812 | break; | |
3813 | } | |
3814 | ||
3815 | if (!conn) | |
3816 | return -EINVAL; | |
3817 | ||
3818 | mutex_lock(&conn->ep_mutex); | |
7c6e99c1 | 3819 | spin_lock_irq(&conn->lock); |
23d6fefb | 3820 | if (test_bit(ISCSI_CLS_CONN_BIT_CLEANUP, &conn->flags)) { |
7c6e99c1 | 3821 | spin_unlock_irq(&conn->lock); |
23d6fefb MC |
3822 | mutex_unlock(&conn->ep_mutex); |
3823 | ev->r.retcode = -ENOTCONN; | |
3824 | return 0; | |
3825 | } | |
7c6e99c1 | 3826 | spin_unlock_irq(&conn->lock); |
23d6fefb MC |
3827 | |
3828 | switch (nlh->nlmsg_type) { | |
3829 | case ISCSI_UEVENT_BIND_CONN: | |
23d6fefb MC |
3830 | session = iscsi_session_lookup(ev->u.b_conn.sid); |
3831 | if (!session) { | |
3832 | err = -EINVAL; | |
3833 | break; | |
3834 | } | |
3835 | ||
3836 | ev->r.retcode = transport->bind_conn(session, conn, | |
3837 | ev->u.b_conn.transport_eph, | |
3838 | ev->u.b_conn.is_leading); | |
3839 | if (!ev->r.retcode) | |
03690d81 | 3840 | WRITE_ONCE(conn->state, ISCSI_CONN_BOUND); |
23d6fefb MC |
3841 | |
3842 | if (ev->r.retcode || !transport->ep_connect) | |
3843 | break; | |
3844 | ||
3845 | ep = iscsi_lookup_endpoint(ev->u.b_conn.transport_eph); | |
3846 | if (ep) { | |
3847 | ep->conn = conn; | |
3848 | conn->ep = ep; | |
3849 | iscsi_put_endpoint(ep); | |
3850 | } else { | |
3851 | err = -ENOTCONN; | |
3852 | iscsi_cls_conn_printk(KERN_ERR, conn, | |
3853 | "Could not set ep conn binding\n"); | |
3854 | } | |
3855 | break; | |
3856 | case ISCSI_UEVENT_START_CONN: | |
3857 | ev->r.retcode = transport->start_conn(conn); | |
3858 | if (!ev->r.retcode) | |
03690d81 MC |
3859 | WRITE_ONCE(conn->state, ISCSI_CONN_UP); |
3860 | ||
23d6fefb MC |
3861 | break; |
3862 | case ISCSI_UEVENT_SEND_PDU: | |
3863 | pdu_len = nlh->nlmsg_len - sizeof(*nlh) - sizeof(*ev); | |
3864 | ||
3865 | if ((ev->u.send_pdu.hdr_size > pdu_len) || | |
3866 | (ev->u.send_pdu.data_size > (pdu_len - ev->u.send_pdu.hdr_size))) { | |
3867 | err = -EINVAL; | |
3868 | break; | |
3869 | } | |
3870 | ||
3871 | ev->r.retcode = transport->send_pdu(conn, | |
3872 | (struct iscsi_hdr *)((char *)ev + sizeof(*ev)), | |
3873 | (char *)ev + sizeof(*ev) + ev->u.send_pdu.hdr_size, | |
3874 | ev->u.send_pdu.data_size); | |
3875 | break; | |
3876 | default: | |
3877 | err = -ENOSYS; | |
3878 | } | |
3879 | ||
3880 | mutex_unlock(&conn->ep_mutex); | |
3881 | return err; | |
3882 | } | |
6fa7c554 | 3883 | |
43514774 MC |
3884 | static int |
3885 | iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group) | |
0896b752 AA |
3886 | { |
3887 | int err = 0; | |
af170928 | 3888 | u32 portid; |
e07ebea0 | 3889 | struct iscsi_uevent *ev = nlmsg_data(nlh); |
0896b752 AA |
3890 | struct iscsi_transport *transport = NULL; |
3891 | struct iscsi_internal *priv; | |
7b7232f3 | 3892 | struct iscsi_cls_session *session; |
d82ff9be | 3893 | struct iscsi_endpoint *ep = NULL; |
0896b752 | 3894 | |
688e8128 LD |
3895 | if (!netlink_capable(skb, CAP_SYS_ADMIN)) |
3896 | return -EPERM; | |
3897 | ||
43514774 MC |
3898 | if (nlh->nlmsg_type == ISCSI_UEVENT_PATH_UPDATE) |
3899 | *group = ISCSI_NL_GRP_UIP; | |
3900 | else | |
3901 | *group = ISCSI_NL_GRP_ISCSID; | |
3902 | ||
0896b752 AA |
3903 | priv = iscsi_if_transport_lookup(iscsi_ptr(ev->transport_handle)); |
3904 | if (!priv) | |
3905 | return -EINVAL; | |
3906 | transport = priv->iscsi_transport; | |
3907 | ||
7b7232f3 MC |
3908 | if (!try_module_get(transport->owner)) |
3909 | return -EINVAL; | |
3910 | ||
af170928 CL |
3911 | portid = NETLINK_CB(skb).portid; |
3912 | ||
0896b752 AA |
3913 | switch (nlh->nlmsg_type) { |
3914 | case ISCSI_UEVENT_CREATE_SESSION: | |
d82ff9be | 3915 | err = iscsi_if_create_session(priv, ep, ev, |
af170928 | 3916 | portid, |
40753caa MC |
3917 | ev->u.c_session.initial_cmdsn, |
3918 | ev->u.c_session.cmds_max, | |
3919 | ev->u.c_session.queue_depth); | |
3920 | break; | |
3921 | case ISCSI_UEVENT_CREATE_BOUND_SESSION: | |
d82ff9be | 3922 | ep = iscsi_lookup_endpoint(ev->u.c_bound_session.ep_handle); |
c95fddc7 MC |
3923 | if (!ep) { |
3924 | err = -EINVAL; | |
3925 | break; | |
3926 | } | |
d82ff9be MC |
3927 | |
3928 | err = iscsi_if_create_session(priv, ep, ev, | |
af170928 | 3929 | portid, |
40753caa MC |
3930 | ev->u.c_bound_session.initial_cmdsn, |
3931 | ev->u.c_bound_session.cmds_max, | |
3932 | ev->u.c_bound_session.queue_depth); | |
9e5fe170 | 3933 | iscsi_put_endpoint(ep); |
0896b752 AA |
3934 | break; |
3935 | case ISCSI_UEVENT_DESTROY_SESSION: | |
b5c7a12d | 3936 | session = iscsi_session_lookup(ev->u.d_session.sid); |
54155ed4 | 3937 | if (!session) |
26974789 | 3938 | err = -EINVAL; |
54155ed4 NB |
3939 | else if (iscsi_session_has_conns(ev->u.d_session.sid)) |
3940 | err = -EBUSY; | |
3941 | else | |
3942 | transport->destroy_session(session); | |
26974789 | 3943 | break; |
cc6b32ee FM |
3944 | case ISCSI_UEVENT_DESTROY_SESSION_ASYNC: |
3945 | session = iscsi_session_lookup(ev->u.d_session.sid); | |
3946 | if (!session) | |
3947 | err = -EINVAL; | |
3948 | else if (iscsi_session_has_conns(ev->u.d_session.sid)) | |
3949 | err = -EBUSY; | |
3950 | else { | |
3951 | unsigned long flags; | |
3952 | ||
3953 | /* Prevent this session from being found again */ | |
3954 | spin_lock_irqsave(&sesslock, flags); | |
93bf02e5 | 3955 | list_del_init(&session->sess_list); |
cc6b32ee FM |
3956 | spin_unlock_irqrestore(&sesslock, flags); |
3957 | ||
b25b957d | 3958 | queue_work(system_unbound_wq, &session->destroy_work); |
cc6b32ee FM |
3959 | } |
3960 | break; | |
26974789 MC |
3961 | case ISCSI_UEVENT_UNBIND_SESSION: |
3962 | session = iscsi_session_lookup(ev->u.d_session.sid); | |
3963 | if (session) | |
5842ea36 | 3964 | queue_work(session->workq, &session->unbind_work); |
26974789 | 3965 | else |
7b7232f3 | 3966 | err = -EINVAL; |
0896b752 | 3967 | break; |
0896b752 | 3968 | case ISCSI_UEVENT_SET_PARAM: |
0c26a2d7 | 3969 | err = iscsi_if_set_param(transport, ev); |
0896b752 | 3970 | break; |
23d6fefb MC |
3971 | case ISCSI_UEVENT_CREATE_CONN: |
3972 | case ISCSI_UEVENT_DESTROY_CONN: | |
0896b752 | 3973 | case ISCSI_UEVENT_STOP_CONN: |
23d6fefb MC |
3974 | case ISCSI_UEVENT_START_CONN: |
3975 | case ISCSI_UEVENT_BIND_CONN: | |
0896b752 | 3976 | case ISCSI_UEVENT_SEND_PDU: |
23d6fefb | 3977 | err = iscsi_if_transport_conn(transport, nlh); |
0896b752 AA |
3978 | break; |
3979 | case ISCSI_UEVENT_GET_STATS: | |
5b940adf | 3980 | err = iscsi_if_get_stats(transport, nlh); |
0896b752 | 3981 | break; |
264faaaa OG |
3982 | case ISCSI_UEVENT_TRANSPORT_EP_CONNECT: |
3983 | case ISCSI_UEVENT_TRANSPORT_EP_POLL: | |
3984 | case ISCSI_UEVENT_TRANSPORT_EP_DISCONNECT: | |
10eb0f01 | 3985 | case ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST: |
264faaaa OG |
3986 | err = iscsi_if_transport_ep(transport, ev, nlh->nlmsg_type); |
3987 | break; | |
01cb225d MC |
3988 | case ISCSI_UEVENT_TGT_DSCVR: |
3989 | err = iscsi_tgt_dscvr(transport, ev); | |
3990 | break; | |
1d9bf13a MC |
3991 | case ISCSI_UEVENT_SET_HOST_PARAM: |
3992 | err = iscsi_set_host_param(transport, ev); | |
3993 | break; | |
43514774 MC |
3994 | case ISCSI_UEVENT_PATH_UPDATE: |
3995 | err = iscsi_set_path(transport, ev); | |
3996 | break; | |
56c155b5 | 3997 | case ISCSI_UEVENT_SET_IFACE_PARAMS: |
00c31889 MC |
3998 | err = iscsi_set_iface_params(transport, ev, |
3999 | nlmsg_attrlen(nlh, sizeof(*ev))); | |
56c155b5 | 4000 | break; |
ac20c7bf VC |
4001 | case ISCSI_UEVENT_PING: |
4002 | err = iscsi_send_ping(transport, ev); | |
4003 | break; | |
6260a5d2 NJ |
4004 | case ISCSI_UEVENT_GET_CHAP: |
4005 | err = iscsi_get_chap(transport, nlh); | |
4006 | break; | |
4007 | case ISCSI_UEVENT_DELETE_CHAP: | |
4008 | err = iscsi_delete_chap(transport, ev); | |
4009 | break; | |
c6a4bb2e AC |
4010 | case ISCSI_UEVENT_SET_FLASHNODE_PARAMS: |
4011 | err = iscsi_set_flashnode_param(transport, ev, | |
4012 | nlmsg_attrlen(nlh, | |
4013 | sizeof(*ev))); | |
4014 | break; | |
4015 | case ISCSI_UEVENT_NEW_FLASHNODE: | |
4016 | err = iscsi_new_flashnode(transport, ev, | |
4017 | nlmsg_attrlen(nlh, sizeof(*ev))); | |
4018 | break; | |
4019 | case ISCSI_UEVENT_DEL_FLASHNODE: | |
4020 | err = iscsi_del_flashnode(transport, ev); | |
4021 | break; | |
4022 | case ISCSI_UEVENT_LOGIN_FLASHNODE: | |
4023 | err = iscsi_login_flashnode(transport, ev); | |
4024 | break; | |
4025 | case ISCSI_UEVENT_LOGOUT_FLASHNODE: | |
4026 | err = iscsi_logout_flashnode(transport, ev); | |
4027 | break; | |
4028 | case ISCSI_UEVENT_LOGOUT_FLASHNODE_SID: | |
4029 | err = iscsi_logout_flashnode_sid(transport, ev); | |
4030 | break; | |
3af142fe AC |
4031 | case ISCSI_UEVENT_SET_CHAP: |
4032 | err = iscsi_set_chap(transport, ev, | |
4033 | nlmsg_attrlen(nlh, sizeof(*ev))); | |
4034 | break; | |
6fa7c554 LC |
4035 | case ISCSI_UEVENT_GET_HOST_STATS: |
4036 | err = iscsi_get_host_stats(transport, nlh); | |
4037 | break; | |
0896b752 | 4038 | default: |
1d9bf13a | 4039 | err = -ENOSYS; |
0896b752 AA |
4040 | break; |
4041 | } | |
4042 | ||
7b7232f3 | 4043 | module_put(transport->owner); |
0896b752 AA |
4044 | return err; |
4045 | } | |
4046 | ||
b5c7a12d | 4047 | /* |
cd40b7d3 DL |
4048 | * Get message from skb. Each message is processed by iscsi_if_recv_msg. |
4049 | * Malformed skbs with wrong lengths or invalid creds are not processed. | |
b5c7a12d | 4050 | */ |
0896b752 | 4051 | static void |
cd40b7d3 | 4052 | iscsi_if_rx(struct sk_buff *skb) |
0896b752 | 4053 | { |
af170928 CL |
4054 | u32 portid = NETLINK_CB(skb).portid; |
4055 | ||
0b950672 | 4056 | mutex_lock(&rx_queue_mutex); |
e07ebea0 | 4057 | while (skb->len >= NLMSG_HDRLEN) { |
cd40b7d3 DL |
4058 | int err; |
4059 | uint32_t rlen; | |
4060 | struct nlmsghdr *nlh; | |
4061 | struct iscsi_uevent *ev; | |
43514774 | 4062 | uint32_t group; |
bba340c7 | 4063 | int retries = ISCSI_SEND_MAX_ALLOWED; |
cd40b7d3 DL |
4064 | |
4065 | nlh = nlmsg_hdr(skb); | |
c88f0e6b | 4066 | if (nlh->nlmsg_len < sizeof(*nlh) + sizeof(*ev) || |
cd40b7d3 DL |
4067 | skb->len < nlh->nlmsg_len) { |
4068 | break; | |
ee7f8e40 | 4069 | } |
ee7f8e40 | 4070 | |
e07ebea0 | 4071 | ev = nlmsg_data(nlh); |
cd40b7d3 DL |
4072 | rlen = NLMSG_ALIGN(nlh->nlmsg_len); |
4073 | if (rlen > skb->len) | |
4074 | rlen = skb->len; | |
0896b752 | 4075 | |
43514774 | 4076 | err = iscsi_if_recv_msg(skb, nlh, &group); |
cd40b7d3 DL |
4077 | if (err) { |
4078 | ev->type = ISCSI_KEVENT_IF_ERROR; | |
4079 | ev->iferror = err; | |
0896b752 | 4080 | } |
cd40b7d3 DL |
4081 | do { |
4082 | /* | |
4083 | * special case for GET_STATS: | |
4084 | * on success - sending reply and stats from | |
4085 | * inside of if_recv_msg(), | |
4086 | * on error - fall through. | |
4087 | */ | |
4088 | if (ev->type == ISCSI_UEVENT_GET_STATS && !err) | |
4089 | break; | |
6260a5d2 NJ |
4090 | if (ev->type == ISCSI_UEVENT_GET_CHAP && !err) |
4091 | break; | |
af170928 CL |
4092 | err = iscsi_if_send_reply(portid, nlh->nlmsg_type, |
4093 | ev, sizeof(*ev)); | |
bba340c7 BW |
4094 | if (err == -EAGAIN && --retries < 0) { |
4095 | printk(KERN_WARNING "Send reply failed, error %d\n", err); | |
4096 | break; | |
4097 | } | |
46a7c17d | 4098 | } while (err < 0 && err != -ECONNREFUSED && err != -ESRCH); |
cd40b7d3 | 4099 | skb_pull(skb, rlen); |
0896b752 | 4100 | } |
0b950672 | 4101 | mutex_unlock(&rx_queue_mutex); |
0896b752 | 4102 | } |
1da177e4 | 4103 | |
fd7255f5 | 4104 | #define ISCSI_CLASS_ATTR(_prefix,_name,_mode,_show,_store) \ |
ee959b00 | 4105 | struct device_attribute dev_attr_##_prefix##_##_name = \ |
fd7255f5 MC |
4106 | __ATTR(_name,_mode,_show,_store) |
4107 | ||
1da177e4 | 4108 | /* |
0896b752 | 4109 | * iSCSI connection attrs |
1da177e4 | 4110 | */ |
a54a52ca | 4111 | #define iscsi_conn_attr_show(param) \ |
0896b752 | 4112 | static ssize_t \ |
ee959b00 TJ |
4113 | show_conn_param_##param(struct device *dev, \ |
4114 | struct device_attribute *attr, char *buf) \ | |
0896b752 | 4115 | { \ |
ee959b00 | 4116 | struct iscsi_cls_conn *conn = iscsi_dev_to_conn(dev->parent); \ |
7b8631b5 | 4117 | struct iscsi_transport *t = conn->transport; \ |
a54a52ca | 4118 | return t->get_conn_param(conn, param, buf); \ |
0896b752 AA |
4119 | } |
4120 | ||
a54a52ca MC |
4121 | #define iscsi_conn_attr(field, param) \ |
4122 | iscsi_conn_attr_show(param) \ | |
4123 | static ISCSI_CLASS_ATTR(conn, field, S_IRUGO, show_conn_param_##param, \ | |
fd7255f5 | 4124 | NULL); |
0896b752 | 4125 | |
a54a52ca MC |
4126 | iscsi_conn_attr(max_recv_dlength, ISCSI_PARAM_MAX_RECV_DLENGTH); |
4127 | iscsi_conn_attr(max_xmit_dlength, ISCSI_PARAM_MAX_XMIT_DLENGTH); | |
4128 | iscsi_conn_attr(header_digest, ISCSI_PARAM_HDRDGST_EN); | |
4129 | iscsi_conn_attr(data_digest, ISCSI_PARAM_DATADGST_EN); | |
4130 | iscsi_conn_attr(ifmarker, ISCSI_PARAM_IFMARKER_EN); | |
4131 | iscsi_conn_attr(ofmarker, ISCSI_PARAM_OFMARKER_EN); | |
4132 | iscsi_conn_attr(persistent_port, ISCSI_PARAM_PERSISTENT_PORT); | |
a54a52ca MC |
4133 | iscsi_conn_attr(exp_statsn, ISCSI_PARAM_EXP_STATSN); |
4134 | iscsi_conn_attr(persistent_address, ISCSI_PARAM_PERSISTENT_ADDRESS); | |
f6d5180c MC |
4135 | iscsi_conn_attr(ping_tmo, ISCSI_PARAM_PING_TMO); |
4136 | iscsi_conn_attr(recv_tmo, ISCSI_PARAM_RECV_TMO); | |
ae542edb AC |
4137 | iscsi_conn_attr(local_port, ISCSI_PARAM_LOCAL_PORT); |
4138 | iscsi_conn_attr(statsn, ISCSI_PARAM_STATSN); | |
4139 | iscsi_conn_attr(keepalive_tmo, ISCSI_PARAM_KEEPALIVE_TMO); | |
4140 | iscsi_conn_attr(max_segment_size, ISCSI_PARAM_MAX_SEGMENT_SIZE); | |
4141 | iscsi_conn_attr(tcp_timestamp_stat, ISCSI_PARAM_TCP_TIMESTAMP_STAT); | |
4142 | iscsi_conn_attr(tcp_wsf_disable, ISCSI_PARAM_TCP_WSF_DISABLE); | |
4143 | iscsi_conn_attr(tcp_nagle_disable, ISCSI_PARAM_TCP_NAGLE_DISABLE); | |
4144 | iscsi_conn_attr(tcp_timer_scale, ISCSI_PARAM_TCP_TIMER_SCALE); | |
4145 | iscsi_conn_attr(tcp_timestamp_enable, ISCSI_PARAM_TCP_TIMESTAMP_EN); | |
4146 | iscsi_conn_attr(fragment_disable, ISCSI_PARAM_IP_FRAGMENT_DISABLE); | |
4147 | iscsi_conn_attr(ipv4_tos, ISCSI_PARAM_IPV4_TOS); | |
4148 | iscsi_conn_attr(ipv6_traffic_class, ISCSI_PARAM_IPV6_TC); | |
4149 | iscsi_conn_attr(ipv6_flow_label, ISCSI_PARAM_IPV6_FLOW_LABEL); | |
4150 | iscsi_conn_attr(is_fw_assigned_ipv6, ISCSI_PARAM_IS_FW_ASSIGNED_IPV6); | |
4151 | iscsi_conn_attr(tcp_xmit_wsf, ISCSI_PARAM_TCP_XMIT_WSF); | |
4152 | iscsi_conn_attr(tcp_recv_wsf, ISCSI_PARAM_TCP_RECV_WSF); | |
5af62f24 | 4153 | iscsi_conn_attr(local_ipaddr, ISCSI_PARAM_LOCAL_IPADDR); |
ae542edb | 4154 | |
82b8cf40 GKB |
4155 | static const char *const connection_state_names[] = { |
4156 | [ISCSI_CONN_UP] = "up", | |
4157 | [ISCSI_CONN_DOWN] = "down", | |
9e67600e GM |
4158 | [ISCSI_CONN_FAILED] = "failed", |
4159 | [ISCSI_CONN_BOUND] = "bound" | |
82b8cf40 GKB |
4160 | }; |
4161 | ||
4162 | static ssize_t show_conn_state(struct device *dev, | |
4163 | struct device_attribute *attr, char *buf) | |
4164 | { | |
4165 | struct iscsi_cls_conn *conn = iscsi_dev_to_conn(dev->parent); | |
4166 | const char *state = "unknown"; | |
03690d81 | 4167 | int conn_state = READ_ONCE(conn->state); |
82b8cf40 | 4168 | |
03690d81 MC |
4169 | if (conn_state >= 0 && |
4170 | conn_state < ARRAY_SIZE(connection_state_names)) | |
4171 | state = connection_state_names[conn_state]; | |
82b8cf40 | 4172 | |
ec98ea70 | 4173 | return sysfs_emit(buf, "%s\n", state); |
82b8cf40 GKB |
4174 | } |
4175 | static ISCSI_CLASS_ATTR(conn, state, S_IRUGO, show_conn_state, | |
4176 | NULL); | |
1da177e4 | 4177 | |
289324b0 MC |
4178 | #define iscsi_conn_ep_attr_show(param) \ |
4179 | static ssize_t show_conn_ep_param_##param(struct device *dev, \ | |
4180 | struct device_attribute *attr,\ | |
4181 | char *buf) \ | |
4182 | { \ | |
4183 | struct iscsi_cls_conn *conn = iscsi_dev_to_conn(dev->parent); \ | |
4184 | struct iscsi_transport *t = conn->transport; \ | |
4185 | struct iscsi_endpoint *ep; \ | |
4186 | ssize_t rc; \ | |
4187 | \ | |
4188 | /* \ | |
4189 | * Need to make sure ep_disconnect does not free the LLD's \ | |
4190 | * interconnect resources while we are trying to read them. \ | |
4191 | */ \ | |
4192 | mutex_lock(&conn->ep_mutex); \ | |
4193 | ep = conn->ep; \ | |
4194 | if (!ep && t->ep_connect) { \ | |
4195 | mutex_unlock(&conn->ep_mutex); \ | |
4196 | return -ENOTCONN; \ | |
4197 | } \ | |
4198 | \ | |
4199 | if (ep) \ | |
4200 | rc = t->get_ep_param(ep, param, buf); \ | |
4201 | else \ | |
4202 | rc = t->get_conn_param(conn, param, buf); \ | |
4203 | mutex_unlock(&conn->ep_mutex); \ | |
4204 | return rc; \ | |
4205 | } | |
4206 | ||
4207 | #define iscsi_conn_ep_attr(field, param) \ | |
4208 | iscsi_conn_ep_attr_show(param) \ | |
4209 | static ISCSI_CLASS_ATTR(conn, field, S_IRUGO, \ | |
4210 | show_conn_ep_param_##param, NULL); | |
4211 | ||
4212 | iscsi_conn_ep_attr(address, ISCSI_PARAM_CONN_ADDRESS); | |
4213 | iscsi_conn_ep_attr(port, ISCSI_PARAM_CONN_PORT); | |
4214 | ||
3128c6c7 MC |
4215 | static struct attribute *iscsi_conn_attrs[] = { |
4216 | &dev_attr_conn_max_recv_dlength.attr, | |
4217 | &dev_attr_conn_max_xmit_dlength.attr, | |
4218 | &dev_attr_conn_header_digest.attr, | |
4219 | &dev_attr_conn_data_digest.attr, | |
4220 | &dev_attr_conn_ifmarker.attr, | |
4221 | &dev_attr_conn_ofmarker.attr, | |
4222 | &dev_attr_conn_address.attr, | |
4223 | &dev_attr_conn_port.attr, | |
4224 | &dev_attr_conn_exp_statsn.attr, | |
4225 | &dev_attr_conn_persistent_address.attr, | |
4226 | &dev_attr_conn_persistent_port.attr, | |
4227 | &dev_attr_conn_ping_tmo.attr, | |
4228 | &dev_attr_conn_recv_tmo.attr, | |
ae542edb AC |
4229 | &dev_attr_conn_local_port.attr, |
4230 | &dev_attr_conn_statsn.attr, | |
4231 | &dev_attr_conn_keepalive_tmo.attr, | |
4232 | &dev_attr_conn_max_segment_size.attr, | |
4233 | &dev_attr_conn_tcp_timestamp_stat.attr, | |
4234 | &dev_attr_conn_tcp_wsf_disable.attr, | |
4235 | &dev_attr_conn_tcp_nagle_disable.attr, | |
4236 | &dev_attr_conn_tcp_timer_scale.attr, | |
4237 | &dev_attr_conn_tcp_timestamp_enable.attr, | |
4238 | &dev_attr_conn_fragment_disable.attr, | |
4239 | &dev_attr_conn_ipv4_tos.attr, | |
4240 | &dev_attr_conn_ipv6_traffic_class.attr, | |
4241 | &dev_attr_conn_ipv6_flow_label.attr, | |
4242 | &dev_attr_conn_is_fw_assigned_ipv6.attr, | |
4243 | &dev_attr_conn_tcp_xmit_wsf.attr, | |
4244 | &dev_attr_conn_tcp_recv_wsf.attr, | |
5af62f24 | 4245 | &dev_attr_conn_local_ipaddr.attr, |
82b8cf40 | 4246 | &dev_attr_conn_state.attr, |
3128c6c7 MC |
4247 | NULL, |
4248 | }; | |
4249 | ||
587a1f16 | 4250 | static umode_t iscsi_conn_attr_is_visible(struct kobject *kobj, |
3128c6c7 MC |
4251 | struct attribute *attr, int i) |
4252 | { | |
4253 | struct device *cdev = container_of(kobj, struct device, kobj); | |
4254 | struct iscsi_cls_conn *conn = transport_class_to_conn(cdev); | |
4255 | struct iscsi_transport *t = conn->transport; | |
4256 | int param; | |
4257 | ||
4258 | if (attr == &dev_attr_conn_max_recv_dlength.attr) | |
4259 | param = ISCSI_PARAM_MAX_RECV_DLENGTH; | |
4260 | else if (attr == &dev_attr_conn_max_xmit_dlength.attr) | |
4261 | param = ISCSI_PARAM_MAX_XMIT_DLENGTH; | |
4262 | else if (attr == &dev_attr_conn_header_digest.attr) | |
4263 | param = ISCSI_PARAM_HDRDGST_EN; | |
4264 | else if (attr == &dev_attr_conn_data_digest.attr) | |
4265 | param = ISCSI_PARAM_DATADGST_EN; | |
4266 | else if (attr == &dev_attr_conn_ifmarker.attr) | |
4267 | param = ISCSI_PARAM_IFMARKER_EN; | |
4268 | else if (attr == &dev_attr_conn_ofmarker.attr) | |
4269 | param = ISCSI_PARAM_OFMARKER_EN; | |
4270 | else if (attr == &dev_attr_conn_address.attr) | |
4271 | param = ISCSI_PARAM_CONN_ADDRESS; | |
4272 | else if (attr == &dev_attr_conn_port.attr) | |
4273 | param = ISCSI_PARAM_CONN_PORT; | |
4274 | else if (attr == &dev_attr_conn_exp_statsn.attr) | |
4275 | param = ISCSI_PARAM_EXP_STATSN; | |
4276 | else if (attr == &dev_attr_conn_persistent_address.attr) | |
4277 | param = ISCSI_PARAM_PERSISTENT_ADDRESS; | |
4278 | else if (attr == &dev_attr_conn_persistent_port.attr) | |
4279 | param = ISCSI_PARAM_PERSISTENT_PORT; | |
4280 | else if (attr == &dev_attr_conn_ping_tmo.attr) | |
4281 | param = ISCSI_PARAM_PING_TMO; | |
4282 | else if (attr == &dev_attr_conn_recv_tmo.attr) | |
4283 | param = ISCSI_PARAM_RECV_TMO; | |
ae542edb AC |
4284 | else if (attr == &dev_attr_conn_local_port.attr) |
4285 | param = ISCSI_PARAM_LOCAL_PORT; | |
4286 | else if (attr == &dev_attr_conn_statsn.attr) | |
4287 | param = ISCSI_PARAM_STATSN; | |
4288 | else if (attr == &dev_attr_conn_keepalive_tmo.attr) | |
4289 | param = ISCSI_PARAM_KEEPALIVE_TMO; | |
4290 | else if (attr == &dev_attr_conn_max_segment_size.attr) | |
4291 | param = ISCSI_PARAM_MAX_SEGMENT_SIZE; | |
4292 | else if (attr == &dev_attr_conn_tcp_timestamp_stat.attr) | |
4293 | param = ISCSI_PARAM_TCP_TIMESTAMP_STAT; | |
4294 | else if (attr == &dev_attr_conn_tcp_wsf_disable.attr) | |
4295 | param = ISCSI_PARAM_TCP_WSF_DISABLE; | |
4296 | else if (attr == &dev_attr_conn_tcp_nagle_disable.attr) | |
4297 | param = ISCSI_PARAM_TCP_NAGLE_DISABLE; | |
4298 | else if (attr == &dev_attr_conn_tcp_timer_scale.attr) | |
4299 | param = ISCSI_PARAM_TCP_TIMER_SCALE; | |
4300 | else if (attr == &dev_attr_conn_tcp_timestamp_enable.attr) | |
4301 | param = ISCSI_PARAM_TCP_TIMESTAMP_EN; | |
4302 | else if (attr == &dev_attr_conn_fragment_disable.attr) | |
4303 | param = ISCSI_PARAM_IP_FRAGMENT_DISABLE; | |
4304 | else if (attr == &dev_attr_conn_ipv4_tos.attr) | |
4305 | param = ISCSI_PARAM_IPV4_TOS; | |
4306 | else if (attr == &dev_attr_conn_ipv6_traffic_class.attr) | |
4307 | param = ISCSI_PARAM_IPV6_TC; | |
4308 | else if (attr == &dev_attr_conn_ipv6_flow_label.attr) | |
4309 | param = ISCSI_PARAM_IPV6_FLOW_LABEL; | |
4310 | else if (attr == &dev_attr_conn_is_fw_assigned_ipv6.attr) | |
4311 | param = ISCSI_PARAM_IS_FW_ASSIGNED_IPV6; | |
4312 | else if (attr == &dev_attr_conn_tcp_xmit_wsf.attr) | |
4313 | param = ISCSI_PARAM_TCP_XMIT_WSF; | |
4314 | else if (attr == &dev_attr_conn_tcp_recv_wsf.attr) | |
4315 | param = ISCSI_PARAM_TCP_RECV_WSF; | |
5af62f24 AC |
4316 | else if (attr == &dev_attr_conn_local_ipaddr.attr) |
4317 | param = ISCSI_PARAM_LOCAL_IPADDR; | |
82b8cf40 GKB |
4318 | else if (attr == &dev_attr_conn_state.attr) |
4319 | return S_IRUGO; | |
3128c6c7 MC |
4320 | else { |
4321 | WARN_ONCE(1, "Invalid conn attr"); | |
4322 | return 0; | |
4323 | } | |
4324 | ||
4325 | return t->attr_is_visible(ISCSI_PARAM, param); | |
4326 | } | |
4327 | ||
4328 | static struct attribute_group iscsi_conn_group = { | |
4329 | .attrs = iscsi_conn_attrs, | |
4330 | .is_visible = iscsi_conn_attr_is_visible, | |
4331 | }; | |
4332 | ||
1da177e4 | 4333 | /* |
0896b752 | 4334 | * iSCSI session attrs |
1da177e4 | 4335 | */ |
b2c64167 | 4336 | #define iscsi_session_attr_show(param, perm) \ |
fd7255f5 | 4337 | static ssize_t \ |
ee959b00 TJ |
4338 | show_session_param_##param(struct device *dev, \ |
4339 | struct device_attribute *attr, char *buf) \ | |
fd7255f5 | 4340 | { \ |
ee959b00 TJ |
4341 | struct iscsi_cls_session *session = \ |
4342 | iscsi_dev_to_session(dev->parent); \ | |
fd7255f5 | 4343 | struct iscsi_transport *t = session->transport; \ |
b2c64167 MC |
4344 | \ |
4345 | if (perm && !capable(CAP_SYS_ADMIN)) \ | |
4346 | return -EACCES; \ | |
a54a52ca | 4347 | return t->get_session_param(session, param, buf); \ |
fd7255f5 MC |
4348 | } |
4349 | ||
b2c64167 MC |
4350 | #define iscsi_session_attr(field, param, perm) \ |
4351 | iscsi_session_attr_show(param, perm) \ | |
a54a52ca | 4352 | static ISCSI_CLASS_ATTR(sess, field, S_IRUGO, show_session_param_##param, \ |
fd7255f5 | 4353 | NULL); |
b2c64167 MC |
4354 | iscsi_session_attr(targetname, ISCSI_PARAM_TARGET_NAME, 0); |
4355 | iscsi_session_attr(initial_r2t, ISCSI_PARAM_INITIAL_R2T_EN, 0); | |
4356 | iscsi_session_attr(max_outstanding_r2t, ISCSI_PARAM_MAX_R2T, 0); | |
4357 | iscsi_session_attr(immediate_data, ISCSI_PARAM_IMM_DATA_EN, 0); | |
4358 | iscsi_session_attr(first_burst_len, ISCSI_PARAM_FIRST_BURST, 0); | |
4359 | iscsi_session_attr(max_burst_len, ISCSI_PARAM_MAX_BURST, 0); | |
4360 | iscsi_session_attr(data_pdu_in_order, ISCSI_PARAM_PDU_INORDER_EN, 0); | |
4361 | iscsi_session_attr(data_seq_in_order, ISCSI_PARAM_DATASEQ_INORDER_EN, 0); | |
4362 | iscsi_session_attr(erl, ISCSI_PARAM_ERL, 0); | |
4363 | iscsi_session_attr(tpgt, ISCSI_PARAM_TPGT, 0); | |
4364 | iscsi_session_attr(username, ISCSI_PARAM_USERNAME, 1); | |
4365 | iscsi_session_attr(username_in, ISCSI_PARAM_USERNAME_IN, 1); | |
4366 | iscsi_session_attr(password, ISCSI_PARAM_PASSWORD, 1); | |
4367 | iscsi_session_attr(password_in, ISCSI_PARAM_PASSWORD_IN, 1); | |
30534952 MC |
4368 | iscsi_session_attr(chap_out_idx, ISCSI_PARAM_CHAP_OUT_IDX, 1); |
4369 | iscsi_session_attr(chap_in_idx, ISCSI_PARAM_CHAP_IN_IDX, 1); | |
4cd49ea1 MC |
4370 | iscsi_session_attr(fast_abort, ISCSI_PARAM_FAST_ABORT, 0); |
4371 | iscsi_session_attr(abort_tmo, ISCSI_PARAM_ABORT_TMO, 0); | |
4372 | iscsi_session_attr(lu_reset_tmo, ISCSI_PARAM_LU_RESET_TMO, 0); | |
3fe5ae8b | 4373 | iscsi_session_attr(tgt_reset_tmo, ISCSI_PARAM_TGT_RESET_TMO, 0); |
88dfd340 | 4374 | iscsi_session_attr(ifacename, ISCSI_PARAM_IFACE_NAME, 0); |
3b2bef1f VC |
4375 | iscsi_session_attr(initiatorname, ISCSI_PARAM_INITIATOR_NAME, 0); |
4376 | iscsi_session_attr(targetalias, ISCSI_PARAM_TARGET_ALIAS, 0); | |
3b9373e9 EW |
4377 | iscsi_session_attr(boot_root, ISCSI_PARAM_BOOT_ROOT, 0); |
4378 | iscsi_session_attr(boot_nic, ISCSI_PARAM_BOOT_NIC, 0); | |
4379 | iscsi_session_attr(boot_target, ISCSI_PARAM_BOOT_TARGET, 0); | |
ae542edb AC |
4380 | iscsi_session_attr(auto_snd_tgt_disable, ISCSI_PARAM_AUTO_SND_TGT_DISABLE, 0); |
4381 | iscsi_session_attr(discovery_session, ISCSI_PARAM_DISCOVERY_SESS, 0); | |
4382 | iscsi_session_attr(portal_type, ISCSI_PARAM_PORTAL_TYPE, 0); | |
4383 | iscsi_session_attr(chap_auth, ISCSI_PARAM_CHAP_AUTH_EN, 0); | |
4384 | iscsi_session_attr(discovery_logout, ISCSI_PARAM_DISCOVERY_LOGOUT_EN, 0); | |
4385 | iscsi_session_attr(bidi_chap, ISCSI_PARAM_BIDI_CHAP_EN, 0); | |
4386 | iscsi_session_attr(discovery_auth_optional, | |
4387 | ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL, 0); | |
4388 | iscsi_session_attr(def_time2wait, ISCSI_PARAM_DEF_TIME2WAIT, 0); | |
4389 | iscsi_session_attr(def_time2retain, ISCSI_PARAM_DEF_TIME2RETAIN, 0); | |
4390 | iscsi_session_attr(isid, ISCSI_PARAM_ISID, 0); | |
4391 | iscsi_session_attr(tsid, ISCSI_PARAM_TSID, 0); | |
4392 | iscsi_session_attr(def_taskmgmt_tmo, ISCSI_PARAM_DEF_TASKMGMT_TMO, 0); | |
4393 | iscsi_session_attr(discovery_parent_idx, ISCSI_PARAM_DISCOVERY_PARENT_IDX, 0); | |
4394 | iscsi_session_attr(discovery_parent_type, ISCSI_PARAM_DISCOVERY_PARENT_TYPE, 0); | |
1da177e4 | 4395 | |
a3be19b9 WH |
4396 | static ssize_t |
4397 | show_priv_session_target_state(struct device *dev, struct device_attribute *attr, | |
4398 | char *buf) | |
4399 | { | |
4400 | struct iscsi_cls_session *session = iscsi_dev_to_session(dev->parent); | |
4401 | ||
4402 | return sysfs_emit(buf, "%s\n", | |
4403 | iscsi_session_target_state_name[session->target_state]); | |
4404 | } | |
4405 | ||
4406 | static ISCSI_CLASS_ATTR(priv_sess, target_state, S_IRUGO, | |
4407 | show_priv_session_target_state, NULL); | |
4408 | ||
6eabafbe | 4409 | static ssize_t |
ee959b00 TJ |
4410 | show_priv_session_state(struct device *dev, struct device_attribute *attr, |
4411 | char *buf) | |
6eabafbe | 4412 | { |
ee959b00 | 4413 | struct iscsi_cls_session *session = iscsi_dev_to_session(dev->parent); |
ec98ea70 | 4414 | return sysfs_emit(buf, "%s\n", iscsi_session_state_name(session->state)); |
6eabafbe MC |
4415 | } |
4416 | static ISCSI_CLASS_ATTR(priv_sess, state, S_IRUGO, show_priv_session_state, | |
4417 | NULL); | |
0c70d84b MC |
4418 | static ssize_t |
4419 | show_priv_session_creator(struct device *dev, struct device_attribute *attr, | |
4420 | char *buf) | |
4421 | { | |
4422 | struct iscsi_cls_session *session = iscsi_dev_to_session(dev->parent); | |
ec98ea70 | 4423 | return sysfs_emit(buf, "%d\n", session->creator); |
0c70d84b MC |
4424 | } |
4425 | static ISCSI_CLASS_ATTR(priv_sess, creator, S_IRUGO, show_priv_session_creator, | |
4426 | NULL); | |
930a9f04 MR |
4427 | static ssize_t |
4428 | show_priv_session_target_id(struct device *dev, struct device_attribute *attr, | |
4429 | char *buf) | |
4430 | { | |
4431 | struct iscsi_cls_session *session = iscsi_dev_to_session(dev->parent); | |
ec98ea70 | 4432 | return sysfs_emit(buf, "%d\n", session->target_id); |
930a9f04 MR |
4433 | } |
4434 | static ISCSI_CLASS_ATTR(priv_sess, target_id, S_IRUGO, | |
4435 | show_priv_session_target_id, NULL); | |
6eabafbe | 4436 | |
fd7255f5 MC |
4437 | #define iscsi_priv_session_attr_show(field, format) \ |
4438 | static ssize_t \ | |
ee959b00 TJ |
4439 | show_priv_session_##field(struct device *dev, \ |
4440 | struct device_attribute *attr, char *buf) \ | |
fd7255f5 | 4441 | { \ |
ee959b00 TJ |
4442 | struct iscsi_cls_session *session = \ |
4443 | iscsi_dev_to_session(dev->parent); \ | |
fe4f0bde | 4444 | if (session->field == -1) \ |
ec98ea70 CL |
4445 | return sysfs_emit(buf, "off\n"); \ |
4446 | return sysfs_emit(buf, format"\n", session->field); \ | |
fd7255f5 MC |
4447 | } |
4448 | ||
fe4f0bde VC |
4449 | #define iscsi_priv_session_attr_store(field) \ |
4450 | static ssize_t \ | |
4451 | store_priv_session_##field(struct device *dev, \ | |
4452 | struct device_attribute *attr, \ | |
4453 | const char *buf, size_t count) \ | |
4454 | { \ | |
4455 | int val; \ | |
4456 | char *cp; \ | |
4457 | struct iscsi_cls_session *session = \ | |
4458 | iscsi_dev_to_session(dev->parent); \ | |
4459 | if ((session->state == ISCSI_SESSION_FREE) || \ | |
4460 | (session->state == ISCSI_SESSION_FAILED)) \ | |
4461 | return -EBUSY; \ | |
9c8108a4 | 4462 | if (strncmp(buf, "off", 3) == 0) { \ |
fe4f0bde | 4463 | session->field = -1; \ |
9c8108a4 CL |
4464 | session->field##_sysfs_override = true; \ |
4465 | } else { \ | |
fe4f0bde VC |
4466 | val = simple_strtoul(buf, &cp, 0); \ |
4467 | if (*cp != '\0' && *cp != '\n') \ | |
4468 | return -EINVAL; \ | |
4469 | session->field = val; \ | |
9c8108a4 | 4470 | session->field##_sysfs_override = true; \ |
fe4f0bde VC |
4471 | } \ |
4472 | return count; \ | |
4473 | } | |
4474 | ||
4475 | #define iscsi_priv_session_rw_attr(field, format) \ | |
fd7255f5 | 4476 | iscsi_priv_session_attr_show(field, format) \ |
fe4f0bde | 4477 | iscsi_priv_session_attr_store(field) \ |
523f3c80 | 4478 | static ISCSI_CLASS_ATTR(priv_sess, field, S_IRUGO | S_IWUSR, \ |
fe4f0bde VC |
4479 | show_priv_session_##field, \ |
4480 | store_priv_session_##field) | |
9c8108a4 | 4481 | |
fe4f0bde | 4482 | iscsi_priv_session_rw_attr(recovery_tmo, "%d"); |
fd7255f5 | 4483 | |
1d063c17 MC |
4484 | static struct attribute *iscsi_session_attrs[] = { |
4485 | &dev_attr_sess_initial_r2t.attr, | |
4486 | &dev_attr_sess_max_outstanding_r2t.attr, | |
4487 | &dev_attr_sess_immediate_data.attr, | |
4488 | &dev_attr_sess_first_burst_len.attr, | |
4489 | &dev_attr_sess_max_burst_len.attr, | |
4490 | &dev_attr_sess_data_pdu_in_order.attr, | |
4491 | &dev_attr_sess_data_seq_in_order.attr, | |
4492 | &dev_attr_sess_erl.attr, | |
4493 | &dev_attr_sess_targetname.attr, | |
4494 | &dev_attr_sess_tpgt.attr, | |
4495 | &dev_attr_sess_password.attr, | |
4496 | &dev_attr_sess_password_in.attr, | |
4497 | &dev_attr_sess_username.attr, | |
4498 | &dev_attr_sess_username_in.attr, | |
4499 | &dev_attr_sess_fast_abort.attr, | |
4500 | &dev_attr_sess_abort_tmo.attr, | |
4501 | &dev_attr_sess_lu_reset_tmo.attr, | |
4502 | &dev_attr_sess_tgt_reset_tmo.attr, | |
4503 | &dev_attr_sess_ifacename.attr, | |
4504 | &dev_attr_sess_initiatorname.attr, | |
4505 | &dev_attr_sess_targetalias.attr, | |
3b9373e9 EW |
4506 | &dev_attr_sess_boot_root.attr, |
4507 | &dev_attr_sess_boot_nic.attr, | |
4508 | &dev_attr_sess_boot_target.attr, | |
1d063c17 MC |
4509 | &dev_attr_priv_sess_recovery_tmo.attr, |
4510 | &dev_attr_priv_sess_state.attr, | |
a3be19b9 | 4511 | &dev_attr_priv_sess_target_state.attr, |
0c70d84b | 4512 | &dev_attr_priv_sess_creator.attr, |
30534952 MC |
4513 | &dev_attr_sess_chap_out_idx.attr, |
4514 | &dev_attr_sess_chap_in_idx.attr, | |
930a9f04 | 4515 | &dev_attr_priv_sess_target_id.attr, |
ae542edb AC |
4516 | &dev_attr_sess_auto_snd_tgt_disable.attr, |
4517 | &dev_attr_sess_discovery_session.attr, | |
4518 | &dev_attr_sess_portal_type.attr, | |
4519 | &dev_attr_sess_chap_auth.attr, | |
4520 | &dev_attr_sess_discovery_logout.attr, | |
4521 | &dev_attr_sess_bidi_chap.attr, | |
4522 | &dev_attr_sess_discovery_auth_optional.attr, | |
4523 | &dev_attr_sess_def_time2wait.attr, | |
4524 | &dev_attr_sess_def_time2retain.attr, | |
4525 | &dev_attr_sess_isid.attr, | |
4526 | &dev_attr_sess_tsid.attr, | |
4527 | &dev_attr_sess_def_taskmgmt_tmo.attr, | |
4528 | &dev_attr_sess_discovery_parent_idx.attr, | |
4529 | &dev_attr_sess_discovery_parent_type.attr, | |
1d063c17 MC |
4530 | NULL, |
4531 | }; | |
4532 | ||
587a1f16 | 4533 | static umode_t iscsi_session_attr_is_visible(struct kobject *kobj, |
1d063c17 MC |
4534 | struct attribute *attr, int i) |
4535 | { | |
4536 | struct device *cdev = container_of(kobj, struct device, kobj); | |
4537 | struct iscsi_cls_session *session = transport_class_to_session(cdev); | |
4538 | struct iscsi_transport *t = session->transport; | |
4539 | int param; | |
4540 | ||
4541 | if (attr == &dev_attr_sess_initial_r2t.attr) | |
4542 | param = ISCSI_PARAM_INITIAL_R2T_EN; | |
4543 | else if (attr == &dev_attr_sess_max_outstanding_r2t.attr) | |
4544 | param = ISCSI_PARAM_MAX_R2T; | |
4545 | else if (attr == &dev_attr_sess_immediate_data.attr) | |
4546 | param = ISCSI_PARAM_IMM_DATA_EN; | |
4547 | else if (attr == &dev_attr_sess_first_burst_len.attr) | |
4548 | param = ISCSI_PARAM_FIRST_BURST; | |
4549 | else if (attr == &dev_attr_sess_max_burst_len.attr) | |
4550 | param = ISCSI_PARAM_MAX_BURST; | |
4551 | else if (attr == &dev_attr_sess_data_pdu_in_order.attr) | |
4552 | param = ISCSI_PARAM_PDU_INORDER_EN; | |
4553 | else if (attr == &dev_attr_sess_data_seq_in_order.attr) | |
4554 | param = ISCSI_PARAM_DATASEQ_INORDER_EN; | |
4555 | else if (attr == &dev_attr_sess_erl.attr) | |
4556 | param = ISCSI_PARAM_ERL; | |
4557 | else if (attr == &dev_attr_sess_targetname.attr) | |
4558 | param = ISCSI_PARAM_TARGET_NAME; | |
4559 | else if (attr == &dev_attr_sess_tpgt.attr) | |
4560 | param = ISCSI_PARAM_TPGT; | |
30534952 MC |
4561 | else if (attr == &dev_attr_sess_chap_in_idx.attr) |
4562 | param = ISCSI_PARAM_CHAP_IN_IDX; | |
4563 | else if (attr == &dev_attr_sess_chap_out_idx.attr) | |
4564 | param = ISCSI_PARAM_CHAP_OUT_IDX; | |
1d063c17 MC |
4565 | else if (attr == &dev_attr_sess_password.attr) |
4566 | param = ISCSI_PARAM_USERNAME; | |
4567 | else if (attr == &dev_attr_sess_password_in.attr) | |
4568 | param = ISCSI_PARAM_USERNAME_IN; | |
4569 | else if (attr == &dev_attr_sess_username.attr) | |
4570 | param = ISCSI_PARAM_PASSWORD; | |
4571 | else if (attr == &dev_attr_sess_username_in.attr) | |
4572 | param = ISCSI_PARAM_PASSWORD_IN; | |
4573 | else if (attr == &dev_attr_sess_fast_abort.attr) | |
4574 | param = ISCSI_PARAM_FAST_ABORT; | |
4575 | else if (attr == &dev_attr_sess_abort_tmo.attr) | |
4576 | param = ISCSI_PARAM_ABORT_TMO; | |
4577 | else if (attr == &dev_attr_sess_lu_reset_tmo.attr) | |
4578 | param = ISCSI_PARAM_LU_RESET_TMO; | |
4579 | else if (attr == &dev_attr_sess_tgt_reset_tmo.attr) | |
4580 | param = ISCSI_PARAM_TGT_RESET_TMO; | |
4581 | else if (attr == &dev_attr_sess_ifacename.attr) | |
4582 | param = ISCSI_PARAM_IFACE_NAME; | |
4583 | else if (attr == &dev_attr_sess_initiatorname.attr) | |
4584 | param = ISCSI_PARAM_INITIATOR_NAME; | |
4585 | else if (attr == &dev_attr_sess_targetalias.attr) | |
4586 | param = ISCSI_PARAM_TARGET_ALIAS; | |
3b9373e9 EW |
4587 | else if (attr == &dev_attr_sess_boot_root.attr) |
4588 | param = ISCSI_PARAM_BOOT_ROOT; | |
4589 | else if (attr == &dev_attr_sess_boot_nic.attr) | |
4590 | param = ISCSI_PARAM_BOOT_NIC; | |
4591 | else if (attr == &dev_attr_sess_boot_target.attr) | |
4592 | param = ISCSI_PARAM_BOOT_TARGET; | |
ae542edb AC |
4593 | else if (attr == &dev_attr_sess_auto_snd_tgt_disable.attr) |
4594 | param = ISCSI_PARAM_AUTO_SND_TGT_DISABLE; | |
4595 | else if (attr == &dev_attr_sess_discovery_session.attr) | |
4596 | param = ISCSI_PARAM_DISCOVERY_SESS; | |
4597 | else if (attr == &dev_attr_sess_portal_type.attr) | |
4598 | param = ISCSI_PARAM_PORTAL_TYPE; | |
4599 | else if (attr == &dev_attr_sess_chap_auth.attr) | |
4600 | param = ISCSI_PARAM_CHAP_AUTH_EN; | |
4601 | else if (attr == &dev_attr_sess_discovery_logout.attr) | |
4602 | param = ISCSI_PARAM_DISCOVERY_LOGOUT_EN; | |
4603 | else if (attr == &dev_attr_sess_bidi_chap.attr) | |
4604 | param = ISCSI_PARAM_BIDI_CHAP_EN; | |
4605 | else if (attr == &dev_attr_sess_discovery_auth_optional.attr) | |
4606 | param = ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL; | |
4607 | else if (attr == &dev_attr_sess_def_time2wait.attr) | |
4608 | param = ISCSI_PARAM_DEF_TIME2WAIT; | |
4609 | else if (attr == &dev_attr_sess_def_time2retain.attr) | |
4610 | param = ISCSI_PARAM_DEF_TIME2RETAIN; | |
4611 | else if (attr == &dev_attr_sess_isid.attr) | |
4612 | param = ISCSI_PARAM_ISID; | |
4613 | else if (attr == &dev_attr_sess_tsid.attr) | |
4614 | param = ISCSI_PARAM_TSID; | |
4615 | else if (attr == &dev_attr_sess_def_taskmgmt_tmo.attr) | |
4616 | param = ISCSI_PARAM_DEF_TASKMGMT_TMO; | |
4617 | else if (attr == &dev_attr_sess_discovery_parent_idx.attr) | |
4618 | param = ISCSI_PARAM_DISCOVERY_PARENT_IDX; | |
4619 | else if (attr == &dev_attr_sess_discovery_parent_type.attr) | |
4620 | param = ISCSI_PARAM_DISCOVERY_PARENT_TYPE; | |
1d063c17 MC |
4621 | else if (attr == &dev_attr_priv_sess_recovery_tmo.attr) |
4622 | return S_IRUGO | S_IWUSR; | |
4623 | else if (attr == &dev_attr_priv_sess_state.attr) | |
4624 | return S_IRUGO; | |
a3be19b9 WH |
4625 | else if (attr == &dev_attr_priv_sess_target_state.attr) |
4626 | return S_IRUGO; | |
0c70d84b MC |
4627 | else if (attr == &dev_attr_priv_sess_creator.attr) |
4628 | return S_IRUGO; | |
930a9f04 MR |
4629 | else if (attr == &dev_attr_priv_sess_target_id.attr) |
4630 | return S_IRUGO; | |
1d063c17 MC |
4631 | else { |
4632 | WARN_ONCE(1, "Invalid session attr"); | |
4633 | return 0; | |
4634 | } | |
4635 | ||
4636 | return t->attr_is_visible(ISCSI_PARAM, param); | |
4637 | } | |
4638 | ||
4639 | static struct attribute_group iscsi_session_group = { | |
4640 | .attrs = iscsi_session_attrs, | |
4641 | .is_visible = iscsi_session_attr_is_visible, | |
4642 | }; | |
4643 | ||
1819dc81 MC |
4644 | /* |
4645 | * iSCSI host attrs | |
4646 | */ | |
4647 | #define iscsi_host_attr_show(param) \ | |
4648 | static ssize_t \ | |
ee959b00 TJ |
4649 | show_host_param_##param(struct device *dev, \ |
4650 | struct device_attribute *attr, char *buf) \ | |
1819dc81 | 4651 | { \ |
ee959b00 | 4652 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1819dc81 MC |
4653 | struct iscsi_internal *priv = to_iscsi_internal(shost->transportt); \ |
4654 | return priv->iscsi_transport->get_host_param(shost, param, buf); \ | |
4655 | } | |
4656 | ||
4657 | #define iscsi_host_attr(field, param) \ | |
4658 | iscsi_host_attr_show(param) \ | |
4659 | static ISCSI_CLASS_ATTR(host, field, S_IRUGO, show_host_param_##param, \ | |
4660 | NULL); | |
4661 | ||
d8196ed2 | 4662 | iscsi_host_attr(netdev, ISCSI_HOST_PARAM_NETDEV_NAME); |
1819dc81 | 4663 | iscsi_host_attr(hwaddress, ISCSI_HOST_PARAM_HWADDRESS); |
d8196ed2 | 4664 | iscsi_host_attr(ipaddress, ISCSI_HOST_PARAM_IPADDRESS); |
8ad5781a | 4665 | iscsi_host_attr(initiatorname, ISCSI_HOST_PARAM_INITIATOR_NAME); |
aeddde29 VC |
4666 | iscsi_host_attr(port_state, ISCSI_HOST_PARAM_PORT_STATE); |
4667 | iscsi_host_attr(port_speed, ISCSI_HOST_PARAM_PORT_SPEED); | |
1819dc81 | 4668 | |
f27fb2ef MC |
4669 | static struct attribute *iscsi_host_attrs[] = { |
4670 | &dev_attr_host_netdev.attr, | |
4671 | &dev_attr_host_hwaddress.attr, | |
4672 | &dev_attr_host_ipaddress.attr, | |
4673 | &dev_attr_host_initiatorname.attr, | |
aeddde29 VC |
4674 | &dev_attr_host_port_state.attr, |
4675 | &dev_attr_host_port_speed.attr, | |
f27fb2ef MC |
4676 | NULL, |
4677 | }; | |
4678 | ||
587a1f16 | 4679 | static umode_t iscsi_host_attr_is_visible(struct kobject *kobj, |
f27fb2ef MC |
4680 | struct attribute *attr, int i) |
4681 | { | |
4682 | struct device *cdev = container_of(kobj, struct device, kobj); | |
4683 | struct Scsi_Host *shost = transport_class_to_shost(cdev); | |
4684 | struct iscsi_internal *priv = to_iscsi_internal(shost->transportt); | |
4685 | int param; | |
4686 | ||
4687 | if (attr == &dev_attr_host_netdev.attr) | |
4688 | param = ISCSI_HOST_PARAM_NETDEV_NAME; | |
4689 | else if (attr == &dev_attr_host_hwaddress.attr) | |
4690 | param = ISCSI_HOST_PARAM_HWADDRESS; | |
4691 | else if (attr == &dev_attr_host_ipaddress.attr) | |
4692 | param = ISCSI_HOST_PARAM_IPADDRESS; | |
4693 | else if (attr == &dev_attr_host_initiatorname.attr) | |
4694 | param = ISCSI_HOST_PARAM_INITIATOR_NAME; | |
aeddde29 VC |
4695 | else if (attr == &dev_attr_host_port_state.attr) |
4696 | param = ISCSI_HOST_PARAM_PORT_STATE; | |
4697 | else if (attr == &dev_attr_host_port_speed.attr) | |
4698 | param = ISCSI_HOST_PARAM_PORT_SPEED; | |
f27fb2ef MC |
4699 | else { |
4700 | WARN_ONCE(1, "Invalid host attr"); | |
4701 | return 0; | |
4702 | } | |
4703 | ||
4704 | return priv->iscsi_transport->attr_is_visible(ISCSI_HOST_PARAM, param); | |
4705 | } | |
4706 | ||
4707 | static struct attribute_group iscsi_host_group = { | |
4708 | .attrs = iscsi_host_attrs, | |
4709 | .is_visible = iscsi_host_attr_is_visible, | |
4710 | }; | |
1819dc81 | 4711 | |
aeddde29 VC |
4712 | /* convert iscsi_port_speed values to ascii string name */ |
4713 | static const struct { | |
4714 | enum iscsi_port_speed value; | |
4715 | char *name; | |
4716 | } iscsi_port_speed_names[] = { | |
4717 | {ISCSI_PORT_SPEED_UNKNOWN, "Unknown" }, | |
4718 | {ISCSI_PORT_SPEED_10MBPS, "10 Mbps" }, | |
4719 | {ISCSI_PORT_SPEED_100MBPS, "100 Mbps" }, | |
4720 | {ISCSI_PORT_SPEED_1GBPS, "1 Gbps" }, | |
4721 | {ISCSI_PORT_SPEED_10GBPS, "10 Gbps" }, | |
f9e4fa46 JB |
4722 | {ISCSI_PORT_SPEED_25GBPS, "25 Gbps" }, |
4723 | {ISCSI_PORT_SPEED_40GBPS, "40 Gbps" }, | |
aeddde29 VC |
4724 | }; |
4725 | ||
4726 | char *iscsi_get_port_speed_name(struct Scsi_Host *shost) | |
4727 | { | |
4728 | int i; | |
4729 | char *speed = "Unknown!"; | |
4730 | struct iscsi_cls_host *ihost = shost->shost_data; | |
4731 | uint32_t port_speed = ihost->port_speed; | |
4732 | ||
4733 | for (i = 0; i < ARRAY_SIZE(iscsi_port_speed_names); i++) { | |
4734 | if (iscsi_port_speed_names[i].value & port_speed) { | |
4735 | speed = iscsi_port_speed_names[i].name; | |
4736 | break; | |
4737 | } | |
4738 | } | |
4739 | return speed; | |
4740 | } | |
4741 | EXPORT_SYMBOL_GPL(iscsi_get_port_speed_name); | |
4742 | ||
4743 | /* convert iscsi_port_state values to ascii string name */ | |
4744 | static const struct { | |
4745 | enum iscsi_port_state value; | |
4746 | char *name; | |
4747 | } iscsi_port_state_names[] = { | |
4748 | {ISCSI_PORT_STATE_DOWN, "LINK DOWN" }, | |
4749 | {ISCSI_PORT_STATE_UP, "LINK UP" }, | |
4750 | }; | |
4751 | ||
4752 | char *iscsi_get_port_state_name(struct Scsi_Host *shost) | |
4753 | { | |
4754 | int i; | |
4755 | char *state = "Unknown!"; | |
4756 | struct iscsi_cls_host *ihost = shost->shost_data; | |
4757 | uint32_t port_state = ihost->port_state; | |
4758 | ||
4759 | for (i = 0; i < ARRAY_SIZE(iscsi_port_state_names); i++) { | |
4760 | if (iscsi_port_state_names[i].value & port_state) { | |
4761 | state = iscsi_port_state_names[i].name; | |
4762 | break; | |
4763 | } | |
4764 | } | |
4765 | return state; | |
4766 | } | |
4767 | EXPORT_SYMBOL_GPL(iscsi_get_port_state_name); | |
4768 | ||
0896b752 AA |
4769 | static int iscsi_session_match(struct attribute_container *cont, |
4770 | struct device *dev) | |
1da177e4 | 4771 | { |
7b8631b5 | 4772 | struct iscsi_cls_session *session; |
1da177e4 | 4773 | struct Scsi_Host *shost; |
0896b752 AA |
4774 | struct iscsi_internal *priv; |
4775 | ||
4776 | if (!iscsi_is_session_dev(dev)) | |
4777 | return 0; | |
1da177e4 | 4778 | |
7b8631b5 MC |
4779 | session = iscsi_dev_to_session(dev); |
4780 | shost = iscsi_session_to_shost(session); | |
0896b752 | 4781 | if (!shost->transportt) |
1da177e4 LT |
4782 | return 0; |
4783 | ||
0896b752 AA |
4784 | priv = to_iscsi_internal(shost->transportt); |
4785 | if (priv->session_cont.ac.class != &iscsi_session_class.class) | |
1da177e4 LT |
4786 | return 0; |
4787 | ||
0896b752 | 4788 | return &priv->session_cont.ac == cont; |
1da177e4 LT |
4789 | } |
4790 | ||
0896b752 AA |
4791 | static int iscsi_conn_match(struct attribute_container *cont, |
4792 | struct device *dev) | |
4793 | { | |
7b8631b5 MC |
4794 | struct iscsi_cls_session *session; |
4795 | struct iscsi_cls_conn *conn; | |
1da177e4 | 4796 | struct Scsi_Host *shost; |
0896b752 | 4797 | struct iscsi_internal *priv; |
1da177e4 | 4798 | |
0896b752 | 4799 | if (!iscsi_is_conn_dev(dev)) |
1da177e4 LT |
4800 | return 0; |
4801 | ||
7b8631b5 MC |
4802 | conn = iscsi_dev_to_conn(dev); |
4803 | session = iscsi_dev_to_session(conn->dev.parent); | |
4804 | shost = iscsi_session_to_shost(session); | |
4805 | ||
0896b752 | 4806 | if (!shost->transportt) |
1da177e4 LT |
4807 | return 0; |
4808 | ||
0896b752 AA |
4809 | priv = to_iscsi_internal(shost->transportt); |
4810 | if (priv->conn_cont.ac.class != &iscsi_connection_class.class) | |
4811 | return 0; | |
1da177e4 | 4812 | |
0896b752 AA |
4813 | return &priv->conn_cont.ac == cont; |
4814 | } | |
4815 | ||
30a6c652 MC |
4816 | static int iscsi_host_match(struct attribute_container *cont, |
4817 | struct device *dev) | |
4818 | { | |
4819 | struct Scsi_Host *shost; | |
4820 | struct iscsi_internal *priv; | |
4821 | ||
4822 | if (!scsi_is_host_device(dev)) | |
4823 | return 0; | |
4824 | ||
4825 | shost = dev_to_shost(dev); | |
4826 | if (!shost->transportt || | |
4827 | shost->transportt->host_attrs.ac.class != &iscsi_host_class.class) | |
4828 | return 0; | |
4829 | ||
4830 | priv = to_iscsi_internal(shost->transportt); | |
4831 | return &priv->t.host_attrs.ac == cont; | |
4832 | } | |
4833 | ||
7b8631b5 MC |
4834 | struct scsi_transport_template * |
4835 | iscsi_register_transport(struct iscsi_transport *tt) | |
0896b752 AA |
4836 | { |
4837 | struct iscsi_internal *priv; | |
4838 | unsigned long flags; | |
f27fb2ef | 4839 | int err; |
0896b752 AA |
4840 | |
4841 | BUG_ON(!tt); | |
891e2639 | 4842 | WARN_ON(tt->ep_disconnect && !tt->unbind_conn); |
0896b752 AA |
4843 | |
4844 | priv = iscsi_if_transport_lookup(tt); | |
4845 | if (priv) | |
7b8631b5 | 4846 | return NULL; |
0896b752 | 4847 | |
24669f75 | 4848 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); |
0896b752 | 4849 | if (!priv) |
7b8631b5 | 4850 | return NULL; |
0896b752 | 4851 | INIT_LIST_HEAD(&priv->list); |
0896b752 | 4852 | priv->iscsi_transport = tt; |
30a6c652 | 4853 | priv->t.user_scan = iscsi_user_scan; |
0896b752 | 4854 | |
ee959b00 | 4855 | priv->dev.class = &iscsi_transport_class; |
71610f55 | 4856 | dev_set_name(&priv->dev, "%s", tt->name); |
ee959b00 | 4857 | err = device_register(&priv->dev); |
0896b752 | 4858 | if (err) |
f014165f | 4859 | goto put_dev; |
0896b752 | 4860 | |
ee959b00 | 4861 | err = sysfs_create_group(&priv->dev.kobj, &iscsi_transport_group); |
0896b752 | 4862 | if (err) |
ee959b00 | 4863 | goto unregister_dev; |
0896b752 | 4864 | |
30a6c652 | 4865 | /* host parameters */ |
30a6c652 MC |
4866 | priv->t.host_attrs.ac.class = &iscsi_host_class.class; |
4867 | priv->t.host_attrs.ac.match = iscsi_host_match; | |
f27fb2ef | 4868 | priv->t.host_attrs.ac.grp = &iscsi_host_group; |
32c6e1b9 | 4869 | priv->t.host_size = sizeof(struct iscsi_cls_host); |
30a6c652 MC |
4870 | transport_container_register(&priv->t.host_attrs); |
4871 | ||
0896b752 | 4872 | /* connection parameters */ |
0896b752 AA |
4873 | priv->conn_cont.ac.class = &iscsi_connection_class.class; |
4874 | priv->conn_cont.ac.match = iscsi_conn_match; | |
3128c6c7 | 4875 | priv->conn_cont.ac.grp = &iscsi_conn_group; |
0896b752 | 4876 | transport_container_register(&priv->conn_cont); |
1da177e4 | 4877 | |
0896b752 | 4878 | /* session parameters */ |
0896b752 AA |
4879 | priv->session_cont.ac.class = &iscsi_session_class.class; |
4880 | priv->session_cont.ac.match = iscsi_session_match; | |
1d063c17 | 4881 | priv->session_cont.ac.grp = &iscsi_session_group; |
0896b752 AA |
4882 | transport_container_register(&priv->session_cont); |
4883 | ||
0896b752 AA |
4884 | spin_lock_irqsave(&iscsi_transport_lock, flags); |
4885 | list_add(&priv->list, &iscsi_transports); | |
4886 | spin_unlock_irqrestore(&iscsi_transport_lock, flags); | |
4887 | ||
4888 | printk(KERN_NOTICE "iscsi: registered transport (%s)\n", tt->name); | |
7b8631b5 | 4889 | return &priv->t; |
1da177e4 | 4890 | |
ee959b00 TJ |
4891 | unregister_dev: |
4892 | device_unregister(&priv->dev); | |
d82ff9be | 4893 | return NULL; |
f014165f ZG |
4894 | put_dev: |
4895 | put_device(&priv->dev); | |
7b8631b5 | 4896 | return NULL; |
1da177e4 | 4897 | } |
0896b752 AA |
4898 | EXPORT_SYMBOL_GPL(iscsi_register_transport); |
4899 | ||
6a33ed50 | 4900 | void iscsi_unregister_transport(struct iscsi_transport *tt) |
0896b752 AA |
4901 | { |
4902 | struct iscsi_internal *priv; | |
4903 | unsigned long flags; | |
4904 | ||
4905 | BUG_ON(!tt); | |
4906 | ||
0b950672 | 4907 | mutex_lock(&rx_queue_mutex); |
0896b752 AA |
4908 | |
4909 | priv = iscsi_if_transport_lookup(tt); | |
4910 | BUG_ON (!priv); | |
4911 | ||
0896b752 AA |
4912 | spin_lock_irqsave(&iscsi_transport_lock, flags); |
4913 | list_del(&priv->list); | |
4914 | spin_unlock_irqrestore(&iscsi_transport_lock, flags); | |
4915 | ||
4916 | transport_container_unregister(&priv->conn_cont); | |
4917 | transport_container_unregister(&priv->session_cont); | |
30a6c652 | 4918 | transport_container_unregister(&priv->t.host_attrs); |
0896b752 | 4919 | |
ee959b00 TJ |
4920 | sysfs_remove_group(&priv->dev.kobj, &iscsi_transport_group); |
4921 | device_unregister(&priv->dev); | |
0b950672 | 4922 | mutex_unlock(&rx_queue_mutex); |
0896b752 AA |
4923 | } |
4924 | EXPORT_SYMBOL_GPL(iscsi_unregister_transport); | |
1da177e4 | 4925 | |
c2332b00 FH |
4926 | void iscsi_dbg_trace(void (*trace)(struct device *dev, struct va_format *), |
4927 | struct device *dev, const char *fmt, ...) | |
4928 | { | |
4929 | struct va_format vaf; | |
4930 | va_list args; | |
4931 | ||
4932 | va_start(args, fmt); | |
4933 | vaf.fmt = fmt; | |
4934 | vaf.va = &args; | |
4935 | trace(dev, &vaf); | |
4936 | va_end(args); | |
4937 | } | |
4938 | EXPORT_SYMBOL_GPL(iscsi_dbg_trace); | |
4939 | ||
1da177e4 LT |
4940 | static __init int iscsi_transport_init(void) |
4941 | { | |
0896b752 | 4942 | int err; |
a31f2d17 PNA |
4943 | struct netlink_kernel_cfg cfg = { |
4944 | .groups = 1, | |
4945 | .input = iscsi_if_rx, | |
4946 | }; | |
09492605 | 4947 | printk(KERN_INFO "Loading iSCSI transport class v%s.\n", |
f4246b33 MC |
4948 | ISCSI_TRANSPORT_VERSION); |
4949 | ||
41be1444 MC |
4950 | atomic_set(&iscsi_session_nr, 0); |
4951 | ||
0896b752 | 4952 | err = class_register(&iscsi_transport_class); |
1da177e4 LT |
4953 | if (err) |
4954 | return err; | |
0896b752 | 4955 | |
d82ff9be | 4956 | err = class_register(&iscsi_endpoint_class); |
0896b752 AA |
4957 | if (err) |
4958 | goto unregister_transport_class; | |
4959 | ||
8d07913d | 4960 | err = class_register(&iscsi_iface_class); |
d82ff9be MC |
4961 | if (err) |
4962 | goto unregister_endpoint_class; | |
4963 | ||
8d07913d MC |
4964 | err = transport_class_register(&iscsi_host_class); |
4965 | if (err) | |
4966 | goto unregister_iface_class; | |
4967 | ||
30a6c652 MC |
4968 | err = transport_class_register(&iscsi_connection_class); |
4969 | if (err) | |
4970 | goto unregister_host_class; | |
4971 | ||
0896b752 AA |
4972 | err = transport_class_register(&iscsi_session_class); |
4973 | if (err) | |
4974 | goto unregister_conn_class; | |
4975 | ||
c6a4bb2e AC |
4976 | err = bus_register(&iscsi_flashnode_bus); |
4977 | if (err) | |
4978 | goto unregister_session_class; | |
4979 | ||
9f00d977 | 4980 | nls = netlink_kernel_create(&init_net, NETLINK_ISCSI, &cfg); |
0896b752 AA |
4981 | if (!nls) { |
4982 | err = -ENOBUFS; | |
c6a4bb2e | 4983 | goto unregister_flashnode_bus; |
0896b752 AA |
4984 | } |
4985 | ||
23d6fefb MC |
4986 | iscsi_conn_cleanup_workq = alloc_workqueue("%s", |
4987 | WQ_SYSFS | WQ_MEM_RECLAIM | WQ_UNBOUND, 0, | |
4988 | "iscsi_conn_cleanup"); | |
4989 | if (!iscsi_conn_cleanup_workq) { | |
4990 | err = -ENOMEM; | |
7cb6683c | 4991 | goto release_nls; |
23d6fefb MC |
4992 | } |
4993 | ||
43a145a3 | 4994 | return 0; |
0896b752 | 4995 | |
d8bf541e | 4996 | release_nls: |
b7c6ba6e | 4997 | netlink_kernel_release(nls); |
c6a4bb2e AC |
4998 | unregister_flashnode_bus: |
4999 | bus_unregister(&iscsi_flashnode_bus); | |
0896b752 AA |
5000 | unregister_session_class: |
5001 | transport_class_unregister(&iscsi_session_class); | |
5002 | unregister_conn_class: | |
5003 | transport_class_unregister(&iscsi_connection_class); | |
30a6c652 MC |
5004 | unregister_host_class: |
5005 | transport_class_unregister(&iscsi_host_class); | |
8d07913d MC |
5006 | unregister_iface_class: |
5007 | class_unregister(&iscsi_iface_class); | |
d82ff9be MC |
5008 | unregister_endpoint_class: |
5009 | class_unregister(&iscsi_endpoint_class); | |
0896b752 AA |
5010 | unregister_transport_class: |
5011 | class_unregister(&iscsi_transport_class); | |
5012 | return err; | |
1da177e4 LT |
5013 | } |
5014 | ||
5015 | static void __exit iscsi_transport_exit(void) | |
5016 | { | |
23d6fefb | 5017 | destroy_workqueue(iscsi_conn_cleanup_workq); |
b7c6ba6e | 5018 | netlink_kernel_release(nls); |
c6a4bb2e | 5019 | bus_unregister(&iscsi_flashnode_bus); |
0896b752 AA |
5020 | transport_class_unregister(&iscsi_connection_class); |
5021 | transport_class_unregister(&iscsi_session_class); | |
30a6c652 | 5022 | transport_class_unregister(&iscsi_host_class); |
d82ff9be | 5023 | class_unregister(&iscsi_endpoint_class); |
8d07913d | 5024 | class_unregister(&iscsi_iface_class); |
0896b752 | 5025 | class_unregister(&iscsi_transport_class); |
1da177e4 LT |
5026 | } |
5027 | ||
5028 | module_init(iscsi_transport_init); | |
5029 | module_exit(iscsi_transport_exit); | |
5030 | ||
0896b752 AA |
5031 | MODULE_AUTHOR("Mike Christie <michaelc@cs.wisc.edu>, " |
5032 | "Dmitry Yusupov <dmitry_yus@yahoo.com>, " | |
5033 | "Alex Aizman <itn780@yahoo.com>"); | |
5034 | MODULE_DESCRIPTION("iSCSI Transport Interface"); | |
1da177e4 | 5035 | MODULE_LICENSE("GPL"); |
f4246b33 | 5036 | MODULE_VERSION(ISCSI_TRANSPORT_VERSION); |
058548ae | 5037 | MODULE_ALIAS_NET_PF_PROTO(PF_NETLINK, NETLINK_ISCSI); |