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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 | ||
41be1444 | 89 | static atomic_t iscsi_session_nr; /* sysfs session id for next new session */ |
d8bf541e | 90 | static struct workqueue_struct *iscsi_eh_timer_workq; |
b5c7a12d | 91 | |
23d6fefb MC |
92 | static struct workqueue_struct *iscsi_conn_cleanup_workq; |
93 | ||
8d4a690c | 94 | static DEFINE_IDA(iscsi_sess_ida); |
0896b752 AA |
95 | /* |
96 | * list of registered transports and lock that must | |
97 | * be held while accessing list. The iscsi_transport_lock must | |
0b950672 | 98 | * be acquired after the rx_queue_mutex. |
0896b752 AA |
99 | */ |
100 | static LIST_HEAD(iscsi_transports); | |
101 | static DEFINE_SPINLOCK(iscsi_transport_lock); | |
102 | ||
103 | #define to_iscsi_internal(tmpl) \ | |
104 | container_of(tmpl, struct iscsi_internal, t) | |
105 | ||
ee959b00 TJ |
106 | #define dev_to_iscsi_internal(_dev) \ |
107 | container_of(_dev, struct iscsi_internal, dev) | |
0896b752 | 108 | |
ee959b00 | 109 | static void iscsi_transport_release(struct device *dev) |
0896b752 | 110 | { |
ee959b00 | 111 | struct iscsi_internal *priv = dev_to_iscsi_internal(dev); |
0896b752 AA |
112 | kfree(priv); |
113 | } | |
1da177e4 | 114 | |
0896b752 AA |
115 | /* |
116 | * iscsi_transport_class represents the iscsi_transports that are | |
117 | * registered. | |
118 | */ | |
119 | static struct class iscsi_transport_class = { | |
120 | .name = "iscsi_transport", | |
ee959b00 | 121 | .dev_release = iscsi_transport_release, |
0896b752 AA |
122 | }; |
123 | ||
124 | static ssize_t | |
ee959b00 TJ |
125 | show_transport_handle(struct device *dev, struct device_attribute *attr, |
126 | char *buf) | |
0896b752 | 127 | { |
ee959b00 | 128 | struct iscsi_internal *priv = dev_to_iscsi_internal(dev); |
688e8128 LD |
129 | |
130 | if (!capable(CAP_SYS_ADMIN)) | |
131 | return -EACCES; | |
ec98ea70 CL |
132 | return sysfs_emit(buf, "%llu\n", |
133 | (unsigned long long)iscsi_handle(priv->iscsi_transport)); | |
0896b752 | 134 | } |
ee959b00 | 135 | static DEVICE_ATTR(handle, S_IRUGO, show_transport_handle, NULL); |
0896b752 AA |
136 | |
137 | #define show_transport_attr(name, format) \ | |
138 | static ssize_t \ | |
ee959b00 TJ |
139 | show_transport_##name(struct device *dev, \ |
140 | struct device_attribute *attr,char *buf) \ | |
0896b752 | 141 | { \ |
ee959b00 | 142 | struct iscsi_internal *priv = dev_to_iscsi_internal(dev); \ |
ec98ea70 | 143 | return sysfs_emit(buf, format"\n", priv->iscsi_transport->name);\ |
0896b752 | 144 | } \ |
ee959b00 | 145 | static DEVICE_ATTR(name, S_IRUGO, show_transport_##name, NULL); |
0896b752 AA |
146 | |
147 | show_transport_attr(caps, "0x%x"); | |
0896b752 AA |
148 | |
149 | static struct attribute *iscsi_transport_attrs[] = { | |
ee959b00 TJ |
150 | &dev_attr_handle.attr, |
151 | &dev_attr_caps.attr, | |
0896b752 AA |
152 | NULL, |
153 | }; | |
154 | ||
155 | static struct attribute_group iscsi_transport_group = { | |
156 | .attrs = iscsi_transport_attrs, | |
157 | }; | |
158 | ||
d82ff9be MC |
159 | /* |
160 | * iSCSI endpoint attrs | |
161 | */ | |
162 | #define iscsi_dev_to_endpoint(_dev) \ | |
163 | container_of(_dev, struct iscsi_endpoint, dev) | |
164 | ||
165 | #define ISCSI_ATTR(_prefix,_name,_mode,_show,_store) \ | |
166 | struct device_attribute dev_attr_##_prefix##_##_name = \ | |
167 | __ATTR(_name,_mode,_show,_store) | |
168 | ||
169 | static void iscsi_endpoint_release(struct device *dev) | |
170 | { | |
171 | struct iscsi_endpoint *ep = iscsi_dev_to_endpoint(dev); | |
172 | kfree(ep); | |
173 | } | |
174 | ||
175 | static struct class iscsi_endpoint_class = { | |
176 | .name = "iscsi_endpoint", | |
177 | .dev_release = iscsi_endpoint_release, | |
178 | }; | |
179 | ||
180 | static ssize_t | |
181 | show_ep_handle(struct device *dev, struct device_attribute *attr, char *buf) | |
182 | { | |
183 | struct iscsi_endpoint *ep = iscsi_dev_to_endpoint(dev); | |
ec98ea70 | 184 | return sysfs_emit(buf, "%llu\n", (unsigned long long) ep->id); |
d82ff9be MC |
185 | } |
186 | static ISCSI_ATTR(ep, handle, S_IRUGO, show_ep_handle, NULL); | |
187 | ||
188 | static struct attribute *iscsi_endpoint_attrs[] = { | |
189 | &dev_attr_ep_handle.attr, | |
190 | NULL, | |
191 | }; | |
192 | ||
193 | static struct attribute_group iscsi_endpoint_group = { | |
194 | .attrs = iscsi_endpoint_attrs, | |
195 | }; | |
196 | ||
197 | #define ISCSI_MAX_EPID -1 | |
198 | ||
9f3b795a | 199 | static int iscsi_match_epid(struct device *dev, const void *data) |
d82ff9be MC |
200 | { |
201 | struct iscsi_endpoint *ep = iscsi_dev_to_endpoint(dev); | |
9f3b795a | 202 | const uint64_t *epid = data; |
d82ff9be MC |
203 | |
204 | return *epid == ep->id; | |
205 | } | |
206 | ||
207 | struct iscsi_endpoint * | |
208 | iscsi_create_endpoint(int dd_size) | |
209 | { | |
210 | struct device *dev; | |
211 | struct iscsi_endpoint *ep; | |
21536062 | 212 | uint64_t id; |
d82ff9be MC |
213 | int err; |
214 | ||
215 | for (id = 1; id < ISCSI_MAX_EPID; id++) { | |
695794ae | 216 | dev = class_find_device(&iscsi_endpoint_class, NULL, &id, |
d82ff9be MC |
217 | iscsi_match_epid); |
218 | if (!dev) | |
219 | break; | |
4ce30874 SG |
220 | else |
221 | put_device(dev); | |
d82ff9be MC |
222 | } |
223 | if (id == ISCSI_MAX_EPID) { | |
224 | printk(KERN_ERR "Too many connections. Max supported %u\n", | |
225 | ISCSI_MAX_EPID - 1); | |
226 | return NULL; | |
227 | } | |
228 | ||
229 | ep = kzalloc(sizeof(*ep) + dd_size, GFP_KERNEL); | |
230 | if (!ep) | |
231 | return NULL; | |
232 | ||
233 | ep->id = id; | |
234 | ep->dev.class = &iscsi_endpoint_class; | |
71610f55 | 235 | dev_set_name(&ep->dev, "ep-%llu", (unsigned long long) id); |
d82ff9be MC |
236 | err = device_register(&ep->dev); |
237 | if (err) | |
238 | goto free_ep; | |
239 | ||
240 | err = sysfs_create_group(&ep->dev.kobj, &iscsi_endpoint_group); | |
241 | if (err) | |
242 | goto unregister_dev; | |
243 | ||
244 | if (dd_size) | |
245 | ep->dd_data = &ep[1]; | |
246 | return ep; | |
247 | ||
248 | unregister_dev: | |
249 | device_unregister(&ep->dev); | |
250 | return NULL; | |
251 | ||
252 | free_ep: | |
253 | kfree(ep); | |
254 | return NULL; | |
255 | } | |
256 | EXPORT_SYMBOL_GPL(iscsi_create_endpoint); | |
257 | ||
258 | void iscsi_destroy_endpoint(struct iscsi_endpoint *ep) | |
259 | { | |
260 | sysfs_remove_group(&ep->dev.kobj, &iscsi_endpoint_group); | |
261 | device_unregister(&ep->dev); | |
262 | } | |
263 | EXPORT_SYMBOL_GPL(iscsi_destroy_endpoint); | |
264 | ||
9e5fe170 MC |
265 | void iscsi_put_endpoint(struct iscsi_endpoint *ep) |
266 | { | |
267 | put_device(&ep->dev); | |
268 | } | |
269 | EXPORT_SYMBOL_GPL(iscsi_put_endpoint); | |
270 | ||
271 | /** | |
272 | * iscsi_lookup_endpoint - get ep from handle | |
273 | * @handle: endpoint handle | |
274 | * | |
275 | * Caller must do a iscsi_put_endpoint. | |
276 | */ | |
d82ff9be MC |
277 | struct iscsi_endpoint *iscsi_lookup_endpoint(u64 handle) |
278 | { | |
279 | struct device *dev; | |
280 | ||
695794ae | 281 | dev = class_find_device(&iscsi_endpoint_class, NULL, &handle, |
d82ff9be MC |
282 | iscsi_match_epid); |
283 | if (!dev) | |
284 | return NULL; | |
285 | ||
9e5fe170 | 286 | return iscsi_dev_to_endpoint(dev); |
d82ff9be MC |
287 | } |
288 | EXPORT_SYMBOL_GPL(iscsi_lookup_endpoint); | |
289 | ||
8d07913d MC |
290 | /* |
291 | * Interface to display network param to sysfs | |
292 | */ | |
293 | ||
294 | static void iscsi_iface_release(struct device *dev) | |
295 | { | |
296 | struct iscsi_iface *iface = iscsi_dev_to_iface(dev); | |
297 | struct device *parent = iface->dev.parent; | |
298 | ||
299 | kfree(iface); | |
300 | put_device(parent); | |
301 | } | |
302 | ||
303 | ||
304 | static struct class iscsi_iface_class = { | |
305 | .name = "iscsi_iface", | |
306 | .dev_release = iscsi_iface_release, | |
307 | }; | |
308 | ||
309 | #define ISCSI_IFACE_ATTR(_prefix, _name, _mode, _show, _store) \ | |
310 | struct device_attribute dev_attr_##_prefix##_##_name = \ | |
311 | __ATTR(_name, _mode, _show, _store) | |
312 | ||
313 | /* iface attrs show */ | |
314 | #define iscsi_iface_attr_show(type, name, param_type, param) \ | |
315 | static ssize_t \ | |
316 | show_##type##_##name(struct device *dev, struct device_attribute *attr, \ | |
317 | char *buf) \ | |
318 | { \ | |
319 | struct iscsi_iface *iface = iscsi_dev_to_iface(dev); \ | |
320 | struct iscsi_transport *t = iface->transport; \ | |
321 | return t->get_iface_param(iface, param_type, param, buf); \ | |
322 | } \ | |
323 | ||
324 | #define iscsi_iface_net_attr(type, name, param) \ | |
325 | iscsi_iface_attr_show(type, name, ISCSI_NET_PARAM, param) \ | |
326 | static ISCSI_IFACE_ATTR(type, name, S_IRUGO, show_##type##_##name, NULL); | |
327 | ||
3e0f65b3 HZ |
328 | #define iscsi_iface_attr(type, name, param) \ |
329 | iscsi_iface_attr_show(type, name, ISCSI_IFACE_PARAM, param) \ | |
330 | static ISCSI_IFACE_ATTR(type, name, S_IRUGO, show_##type##_##name, NULL); | |
331 | ||
332 | /* generic read only ipv4 attribute */ | |
8d07913d MC |
333 | iscsi_iface_net_attr(ipv4_iface, ipaddress, ISCSI_NET_PARAM_IPV4_ADDR); |
334 | iscsi_iface_net_attr(ipv4_iface, gateway, ISCSI_NET_PARAM_IPV4_GW); | |
335 | iscsi_iface_net_attr(ipv4_iface, subnet, ISCSI_NET_PARAM_IPV4_SUBNET); | |
336 | iscsi_iface_net_attr(ipv4_iface, bootproto, ISCSI_NET_PARAM_IPV4_BOOTPROTO); | |
3e0f65b3 HZ |
337 | iscsi_iface_net_attr(ipv4_iface, dhcp_dns_address_en, |
338 | ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN); | |
339 | iscsi_iface_net_attr(ipv4_iface, dhcp_slp_da_info_en, | |
340 | ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN); | |
341 | iscsi_iface_net_attr(ipv4_iface, tos_en, ISCSI_NET_PARAM_IPV4_TOS_EN); | |
342 | iscsi_iface_net_attr(ipv4_iface, tos, ISCSI_NET_PARAM_IPV4_TOS); | |
343 | iscsi_iface_net_attr(ipv4_iface, grat_arp_en, | |
344 | ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN); | |
345 | iscsi_iface_net_attr(ipv4_iface, dhcp_alt_client_id_en, | |
346 | ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN); | |
347 | iscsi_iface_net_attr(ipv4_iface, dhcp_alt_client_id, | |
348 | ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID); | |
349 | iscsi_iface_net_attr(ipv4_iface, dhcp_req_vendor_id_en, | |
350 | ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN); | |
351 | iscsi_iface_net_attr(ipv4_iface, dhcp_use_vendor_id_en, | |
352 | ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN); | |
353 | iscsi_iface_net_attr(ipv4_iface, dhcp_vendor_id, | |
354 | ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID); | |
355 | iscsi_iface_net_attr(ipv4_iface, dhcp_learn_iqn_en, | |
356 | ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN); | |
357 | iscsi_iface_net_attr(ipv4_iface, fragment_disable, | |
358 | ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE); | |
359 | iscsi_iface_net_attr(ipv4_iface, incoming_forwarding_en, | |
360 | ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN); | |
361 | iscsi_iface_net_attr(ipv4_iface, ttl, ISCSI_NET_PARAM_IPV4_TTL); | |
8d07913d MC |
362 | |
363 | /* generic read only ipv6 attribute */ | |
364 | iscsi_iface_net_attr(ipv6_iface, ipaddress, ISCSI_NET_PARAM_IPV6_ADDR); | |
3e0f65b3 HZ |
365 | iscsi_iface_net_attr(ipv6_iface, link_local_addr, |
366 | ISCSI_NET_PARAM_IPV6_LINKLOCAL); | |
8d07913d MC |
367 | iscsi_iface_net_attr(ipv6_iface, router_addr, ISCSI_NET_PARAM_IPV6_ROUTER); |
368 | iscsi_iface_net_attr(ipv6_iface, ipaddr_autocfg, | |
369 | ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG); | |
88f4f517 | 370 | iscsi_iface_net_attr(ipv6_iface, link_local_autocfg, |
8d07913d | 371 | ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG); |
3e0f65b3 HZ |
372 | iscsi_iface_net_attr(ipv6_iface, link_local_state, |
373 | ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE); | |
374 | iscsi_iface_net_attr(ipv6_iface, router_state, | |
375 | ISCSI_NET_PARAM_IPV6_ROUTER_STATE); | |
376 | iscsi_iface_net_attr(ipv6_iface, grat_neighbor_adv_en, | |
377 | ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN); | |
378 | iscsi_iface_net_attr(ipv6_iface, mld_en, ISCSI_NET_PARAM_IPV6_MLD_EN); | |
379 | iscsi_iface_net_attr(ipv6_iface, flow_label, ISCSI_NET_PARAM_IPV6_FLOW_LABEL); | |
380 | iscsi_iface_net_attr(ipv6_iface, traffic_class, | |
381 | ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS); | |
382 | iscsi_iface_net_attr(ipv6_iface, hop_limit, ISCSI_NET_PARAM_IPV6_HOP_LIMIT); | |
383 | iscsi_iface_net_attr(ipv6_iface, nd_reachable_tmo, | |
384 | ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO); | |
385 | iscsi_iface_net_attr(ipv6_iface, nd_rexmit_time, | |
386 | ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME); | |
387 | iscsi_iface_net_attr(ipv6_iface, nd_stale_tmo, | |
388 | ISCSI_NET_PARAM_IPV6_ND_STALE_TMO); | |
389 | iscsi_iface_net_attr(ipv6_iface, dup_addr_detect_cnt, | |
390 | ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT); | |
391 | iscsi_iface_net_attr(ipv6_iface, router_adv_link_mtu, | |
392 | ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU); | |
8d07913d MC |
393 | |
394 | /* common read only iface attribute */ | |
395 | iscsi_iface_net_attr(iface, enabled, ISCSI_NET_PARAM_IFACE_ENABLE); | |
2d63673b | 396 | iscsi_iface_net_attr(iface, vlan_id, ISCSI_NET_PARAM_VLAN_ID); |
4223b9e9 MC |
397 | iscsi_iface_net_attr(iface, vlan_priority, ISCSI_NET_PARAM_VLAN_PRIORITY); |
398 | iscsi_iface_net_attr(iface, vlan_enabled, ISCSI_NET_PARAM_VLAN_ENABLED); | |
8c7d40fb | 399 | iscsi_iface_net_attr(iface, mtu, ISCSI_NET_PARAM_MTU); |
fcb5124e | 400 | iscsi_iface_net_attr(iface, port, ISCSI_NET_PARAM_PORT); |
3e0f65b3 HZ |
401 | iscsi_iface_net_attr(iface, ipaddress_state, ISCSI_NET_PARAM_IPADDR_STATE); |
402 | iscsi_iface_net_attr(iface, delayed_ack_en, ISCSI_NET_PARAM_DELAYED_ACK_EN); | |
403 | iscsi_iface_net_attr(iface, tcp_nagle_disable, | |
404 | ISCSI_NET_PARAM_TCP_NAGLE_DISABLE); | |
405 | iscsi_iface_net_attr(iface, tcp_wsf_disable, ISCSI_NET_PARAM_TCP_WSF_DISABLE); | |
406 | iscsi_iface_net_attr(iface, tcp_wsf, ISCSI_NET_PARAM_TCP_WSF); | |
407 | iscsi_iface_net_attr(iface, tcp_timer_scale, ISCSI_NET_PARAM_TCP_TIMER_SCALE); | |
408 | iscsi_iface_net_attr(iface, tcp_timestamp_en, ISCSI_NET_PARAM_TCP_TIMESTAMP_EN); | |
409 | iscsi_iface_net_attr(iface, cache_id, ISCSI_NET_PARAM_CACHE_ID); | |
410 | iscsi_iface_net_attr(iface, redirect_en, ISCSI_NET_PARAM_REDIRECT_EN); | |
411 | ||
412 | /* common iscsi specific settings attributes */ | |
413 | iscsi_iface_attr(iface, def_taskmgmt_tmo, ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO); | |
414 | iscsi_iface_attr(iface, header_digest, ISCSI_IFACE_PARAM_HDRDGST_EN); | |
415 | iscsi_iface_attr(iface, data_digest, ISCSI_IFACE_PARAM_DATADGST_EN); | |
416 | iscsi_iface_attr(iface, immediate_data, ISCSI_IFACE_PARAM_IMM_DATA_EN); | |
417 | iscsi_iface_attr(iface, initial_r2t, ISCSI_IFACE_PARAM_INITIAL_R2T_EN); | |
418 | iscsi_iface_attr(iface, data_seq_in_order, | |
419 | ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN); | |
420 | iscsi_iface_attr(iface, data_pdu_in_order, ISCSI_IFACE_PARAM_PDU_INORDER_EN); | |
421 | iscsi_iface_attr(iface, erl, ISCSI_IFACE_PARAM_ERL); | |
422 | iscsi_iface_attr(iface, max_recv_dlength, ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH); | |
423 | iscsi_iface_attr(iface, first_burst_len, ISCSI_IFACE_PARAM_FIRST_BURST); | |
424 | iscsi_iface_attr(iface, max_outstanding_r2t, ISCSI_IFACE_PARAM_MAX_R2T); | |
425 | iscsi_iface_attr(iface, max_burst_len, ISCSI_IFACE_PARAM_MAX_BURST); | |
426 | iscsi_iface_attr(iface, chap_auth, ISCSI_IFACE_PARAM_CHAP_AUTH_EN); | |
427 | iscsi_iface_attr(iface, bidi_chap, ISCSI_IFACE_PARAM_BIDI_CHAP_EN); | |
428 | iscsi_iface_attr(iface, discovery_auth_optional, | |
429 | ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL); | |
430 | iscsi_iface_attr(iface, discovery_logout, | |
431 | ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN); | |
432 | iscsi_iface_attr(iface, strict_login_comp_en, | |
433 | ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN); | |
434 | iscsi_iface_attr(iface, initiator_name, ISCSI_IFACE_PARAM_INITIATOR_NAME); | |
8d07913d | 435 | |
587a1f16 | 436 | static umode_t iscsi_iface_attr_is_visible(struct kobject *kobj, |
8d07913d MC |
437 | struct attribute *attr, int i) |
438 | { | |
439 | struct device *dev = container_of(kobj, struct device, kobj); | |
440 | struct iscsi_iface *iface = iscsi_dev_to_iface(dev); | |
441 | struct iscsi_transport *t = iface->transport; | |
e746f345 | 442 | int param = -1; |
8d07913d | 443 | |
4e285508 | 444 | if (attr == &dev_attr_iface_def_taskmgmt_tmo.attr) |
3e0f65b3 HZ |
445 | param = ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO; |
446 | else if (attr == &dev_attr_iface_header_digest.attr) | |
447 | param = ISCSI_IFACE_PARAM_HDRDGST_EN; | |
448 | else if (attr == &dev_attr_iface_data_digest.attr) | |
449 | param = ISCSI_IFACE_PARAM_DATADGST_EN; | |
450 | else if (attr == &dev_attr_iface_immediate_data.attr) | |
451 | param = ISCSI_IFACE_PARAM_IMM_DATA_EN; | |
452 | else if (attr == &dev_attr_iface_initial_r2t.attr) | |
453 | param = ISCSI_IFACE_PARAM_INITIAL_R2T_EN; | |
454 | else if (attr == &dev_attr_iface_data_seq_in_order.attr) | |
455 | param = ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN; | |
456 | else if (attr == &dev_attr_iface_data_pdu_in_order.attr) | |
457 | param = ISCSI_IFACE_PARAM_PDU_INORDER_EN; | |
458 | else if (attr == &dev_attr_iface_erl.attr) | |
459 | param = ISCSI_IFACE_PARAM_ERL; | |
460 | else if (attr == &dev_attr_iface_max_recv_dlength.attr) | |
461 | param = ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH; | |
462 | else if (attr == &dev_attr_iface_first_burst_len.attr) | |
463 | param = ISCSI_IFACE_PARAM_FIRST_BURST; | |
464 | else if (attr == &dev_attr_iface_max_outstanding_r2t.attr) | |
465 | param = ISCSI_IFACE_PARAM_MAX_R2T; | |
466 | else if (attr == &dev_attr_iface_max_burst_len.attr) | |
467 | param = ISCSI_IFACE_PARAM_MAX_BURST; | |
468 | else if (attr == &dev_attr_iface_chap_auth.attr) | |
469 | param = ISCSI_IFACE_PARAM_CHAP_AUTH_EN; | |
470 | else if (attr == &dev_attr_iface_bidi_chap.attr) | |
471 | param = ISCSI_IFACE_PARAM_BIDI_CHAP_EN; | |
472 | else if (attr == &dev_attr_iface_discovery_auth_optional.attr) | |
473 | param = ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL; | |
474 | else if (attr == &dev_attr_iface_discovery_logout.attr) | |
475 | param = ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN; | |
476 | else if (attr == &dev_attr_iface_strict_login_comp_en.attr) | |
477 | param = ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN; | |
478 | else if (attr == &dev_attr_iface_initiator_name.attr) | |
479 | param = ISCSI_IFACE_PARAM_INITIATOR_NAME; | |
e746f345 MC |
480 | |
481 | if (param != -1) | |
482 | return t->attr_is_visible(ISCSI_IFACE_PARAM, param); | |
483 | ||
4e285508 BL |
484 | if (attr == &dev_attr_iface_enabled.attr) |
485 | param = ISCSI_NET_PARAM_IFACE_ENABLE; | |
486 | else if (attr == &dev_attr_iface_vlan_id.attr) | |
e746f345 MC |
487 | param = ISCSI_NET_PARAM_VLAN_ID; |
488 | else if (attr == &dev_attr_iface_vlan_priority.attr) | |
489 | param = ISCSI_NET_PARAM_VLAN_PRIORITY; | |
490 | else if (attr == &dev_attr_iface_vlan_enabled.attr) | |
491 | param = ISCSI_NET_PARAM_VLAN_ENABLED; | |
492 | else if (attr == &dev_attr_iface_mtu.attr) | |
493 | param = ISCSI_NET_PARAM_MTU; | |
494 | else if (attr == &dev_attr_iface_port.attr) | |
495 | param = ISCSI_NET_PARAM_PORT; | |
496 | else if (attr == &dev_attr_iface_ipaddress_state.attr) | |
497 | param = ISCSI_NET_PARAM_IPADDR_STATE; | |
498 | else if (attr == &dev_attr_iface_delayed_ack_en.attr) | |
499 | param = ISCSI_NET_PARAM_DELAYED_ACK_EN; | |
500 | else if (attr == &dev_attr_iface_tcp_nagle_disable.attr) | |
501 | param = ISCSI_NET_PARAM_TCP_NAGLE_DISABLE; | |
502 | else if (attr == &dev_attr_iface_tcp_wsf_disable.attr) | |
503 | param = ISCSI_NET_PARAM_TCP_WSF_DISABLE; | |
504 | else if (attr == &dev_attr_iface_tcp_wsf.attr) | |
505 | param = ISCSI_NET_PARAM_TCP_WSF; | |
506 | else if (attr == &dev_attr_iface_tcp_timer_scale.attr) | |
507 | param = ISCSI_NET_PARAM_TCP_TIMER_SCALE; | |
508 | else if (attr == &dev_attr_iface_tcp_timestamp_en.attr) | |
509 | param = ISCSI_NET_PARAM_TCP_TIMESTAMP_EN; | |
510 | else if (attr == &dev_attr_iface_cache_id.attr) | |
511 | param = ISCSI_NET_PARAM_CACHE_ID; | |
512 | else if (attr == &dev_attr_iface_redirect_en.attr) | |
513 | param = ISCSI_NET_PARAM_REDIRECT_EN; | |
b78dbba0 | 514 | else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) { |
8d07913d | 515 | if (attr == &dev_attr_ipv4_iface_ipaddress.attr) |
b78dbba0 | 516 | param = ISCSI_NET_PARAM_IPV4_ADDR; |
8d07913d | 517 | else if (attr == &dev_attr_ipv4_iface_gateway.attr) |
b78dbba0 | 518 | param = ISCSI_NET_PARAM_IPV4_GW; |
8d07913d | 519 | else if (attr == &dev_attr_ipv4_iface_subnet.attr) |
b78dbba0 | 520 | param = ISCSI_NET_PARAM_IPV4_SUBNET; |
8d07913d | 521 | else if (attr == &dev_attr_ipv4_iface_bootproto.attr) |
b78dbba0 | 522 | param = ISCSI_NET_PARAM_IPV4_BOOTPROTO; |
3e0f65b3 HZ |
523 | else if (attr == |
524 | &dev_attr_ipv4_iface_dhcp_dns_address_en.attr) | |
525 | param = ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN; | |
526 | else if (attr == | |
527 | &dev_attr_ipv4_iface_dhcp_slp_da_info_en.attr) | |
528 | param = ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN; | |
529 | else if (attr == &dev_attr_ipv4_iface_tos_en.attr) | |
530 | param = ISCSI_NET_PARAM_IPV4_TOS_EN; | |
531 | else if (attr == &dev_attr_ipv4_iface_tos.attr) | |
532 | param = ISCSI_NET_PARAM_IPV4_TOS; | |
533 | else if (attr == &dev_attr_ipv4_iface_grat_arp_en.attr) | |
534 | param = ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN; | |
535 | else if (attr == | |
536 | &dev_attr_ipv4_iface_dhcp_alt_client_id_en.attr) | |
537 | param = ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN; | |
538 | else if (attr == &dev_attr_ipv4_iface_dhcp_alt_client_id.attr) | |
539 | param = ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID; | |
540 | else if (attr == | |
541 | &dev_attr_ipv4_iface_dhcp_req_vendor_id_en.attr) | |
542 | param = ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN; | |
543 | else if (attr == | |
544 | &dev_attr_ipv4_iface_dhcp_use_vendor_id_en.attr) | |
545 | param = ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN; | |
546 | else if (attr == &dev_attr_ipv4_iface_dhcp_vendor_id.attr) | |
547 | param = ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID; | |
548 | else if (attr == | |
549 | &dev_attr_ipv4_iface_dhcp_learn_iqn_en.attr) | |
550 | param = ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN; | |
551 | else if (attr == | |
552 | &dev_attr_ipv4_iface_fragment_disable.attr) | |
553 | param = ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE; | |
554 | else if (attr == | |
555 | &dev_attr_ipv4_iface_incoming_forwarding_en.attr) | |
556 | param = ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN; | |
557 | else if (attr == &dev_attr_ipv4_iface_ttl.attr) | |
558 | param = ISCSI_NET_PARAM_IPV4_TTL; | |
b78dbba0 MC |
559 | else |
560 | return 0; | |
8d07913d MC |
561 | } else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6) { |
562 | if (attr == &dev_attr_ipv6_iface_ipaddress.attr) | |
b78dbba0 | 563 | param = ISCSI_NET_PARAM_IPV6_ADDR; |
8d07913d | 564 | else if (attr == &dev_attr_ipv6_iface_link_local_addr.attr) |
b78dbba0 | 565 | param = ISCSI_NET_PARAM_IPV6_LINKLOCAL; |
8d07913d | 566 | else if (attr == &dev_attr_ipv6_iface_router_addr.attr) |
b78dbba0 | 567 | param = ISCSI_NET_PARAM_IPV6_ROUTER; |
8d07913d | 568 | else if (attr == &dev_attr_ipv6_iface_ipaddr_autocfg.attr) |
b78dbba0 | 569 | param = ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG; |
88f4f517 | 570 | else if (attr == &dev_attr_ipv6_iface_link_local_autocfg.attr) |
b78dbba0 | 571 | param = ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG; |
3e0f65b3 HZ |
572 | else if (attr == &dev_attr_ipv6_iface_link_local_state.attr) |
573 | param = ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE; | |
574 | else if (attr == &dev_attr_ipv6_iface_router_state.attr) | |
575 | param = ISCSI_NET_PARAM_IPV6_ROUTER_STATE; | |
576 | else if (attr == | |
577 | &dev_attr_ipv6_iface_grat_neighbor_adv_en.attr) | |
578 | param = ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN; | |
579 | else if (attr == &dev_attr_ipv6_iface_mld_en.attr) | |
580 | param = ISCSI_NET_PARAM_IPV6_MLD_EN; | |
581 | else if (attr == &dev_attr_ipv6_iface_flow_label.attr) | |
582 | param = ISCSI_NET_PARAM_IPV6_FLOW_LABEL; | |
583 | else if (attr == &dev_attr_ipv6_iface_traffic_class.attr) | |
584 | param = ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS; | |
585 | else if (attr == &dev_attr_ipv6_iface_hop_limit.attr) | |
586 | param = ISCSI_NET_PARAM_IPV6_HOP_LIMIT; | |
587 | else if (attr == &dev_attr_ipv6_iface_nd_reachable_tmo.attr) | |
588 | param = ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO; | |
589 | else if (attr == &dev_attr_ipv6_iface_nd_rexmit_time.attr) | |
590 | param = ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME; | |
591 | else if (attr == &dev_attr_ipv6_iface_nd_stale_tmo.attr) | |
592 | param = ISCSI_NET_PARAM_IPV6_ND_STALE_TMO; | |
593 | else if (attr == &dev_attr_ipv6_iface_dup_addr_detect_cnt.attr) | |
594 | param = ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT; | |
595 | else if (attr == &dev_attr_ipv6_iface_router_adv_link_mtu.attr) | |
596 | param = ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU; | |
b78dbba0 MC |
597 | else |
598 | return 0; | |
599 | } else { | |
600 | WARN_ONCE(1, "Invalid iface attr"); | |
601 | return 0; | |
8d07913d MC |
602 | } |
603 | ||
e746f345 | 604 | return t->attr_is_visible(ISCSI_NET_PARAM, param); |
8d07913d MC |
605 | } |
606 | ||
607 | static struct attribute *iscsi_iface_attrs[] = { | |
608 | &dev_attr_iface_enabled.attr, | |
2d63673b | 609 | &dev_attr_iface_vlan_id.attr, |
4223b9e9 MC |
610 | &dev_attr_iface_vlan_priority.attr, |
611 | &dev_attr_iface_vlan_enabled.attr, | |
8d07913d MC |
612 | &dev_attr_ipv4_iface_ipaddress.attr, |
613 | &dev_attr_ipv4_iface_gateway.attr, | |
614 | &dev_attr_ipv4_iface_subnet.attr, | |
615 | &dev_attr_ipv4_iface_bootproto.attr, | |
616 | &dev_attr_ipv6_iface_ipaddress.attr, | |
617 | &dev_attr_ipv6_iface_link_local_addr.attr, | |
618 | &dev_attr_ipv6_iface_router_addr.attr, | |
619 | &dev_attr_ipv6_iface_ipaddr_autocfg.attr, | |
88f4f517 | 620 | &dev_attr_ipv6_iface_link_local_autocfg.attr, |
8c7d40fb | 621 | &dev_attr_iface_mtu.attr, |
fcb5124e | 622 | &dev_attr_iface_port.attr, |
3e0f65b3 HZ |
623 | &dev_attr_iface_ipaddress_state.attr, |
624 | &dev_attr_iface_delayed_ack_en.attr, | |
625 | &dev_attr_iface_tcp_nagle_disable.attr, | |
626 | &dev_attr_iface_tcp_wsf_disable.attr, | |
627 | &dev_attr_iface_tcp_wsf.attr, | |
628 | &dev_attr_iface_tcp_timer_scale.attr, | |
629 | &dev_attr_iface_tcp_timestamp_en.attr, | |
630 | &dev_attr_iface_cache_id.attr, | |
631 | &dev_attr_iface_redirect_en.attr, | |
632 | &dev_attr_iface_def_taskmgmt_tmo.attr, | |
633 | &dev_attr_iface_header_digest.attr, | |
634 | &dev_attr_iface_data_digest.attr, | |
635 | &dev_attr_iface_immediate_data.attr, | |
636 | &dev_attr_iface_initial_r2t.attr, | |
637 | &dev_attr_iface_data_seq_in_order.attr, | |
638 | &dev_attr_iface_data_pdu_in_order.attr, | |
639 | &dev_attr_iface_erl.attr, | |
640 | &dev_attr_iface_max_recv_dlength.attr, | |
641 | &dev_attr_iface_first_burst_len.attr, | |
642 | &dev_attr_iface_max_outstanding_r2t.attr, | |
643 | &dev_attr_iface_max_burst_len.attr, | |
644 | &dev_attr_iface_chap_auth.attr, | |
645 | &dev_attr_iface_bidi_chap.attr, | |
646 | &dev_attr_iface_discovery_auth_optional.attr, | |
647 | &dev_attr_iface_discovery_logout.attr, | |
648 | &dev_attr_iface_strict_login_comp_en.attr, | |
649 | &dev_attr_iface_initiator_name.attr, | |
650 | &dev_attr_ipv4_iface_dhcp_dns_address_en.attr, | |
651 | &dev_attr_ipv4_iface_dhcp_slp_da_info_en.attr, | |
652 | &dev_attr_ipv4_iface_tos_en.attr, | |
653 | &dev_attr_ipv4_iface_tos.attr, | |
654 | &dev_attr_ipv4_iface_grat_arp_en.attr, | |
655 | &dev_attr_ipv4_iface_dhcp_alt_client_id_en.attr, | |
656 | &dev_attr_ipv4_iface_dhcp_alt_client_id.attr, | |
657 | &dev_attr_ipv4_iface_dhcp_req_vendor_id_en.attr, | |
658 | &dev_attr_ipv4_iface_dhcp_use_vendor_id_en.attr, | |
659 | &dev_attr_ipv4_iface_dhcp_vendor_id.attr, | |
660 | &dev_attr_ipv4_iface_dhcp_learn_iqn_en.attr, | |
661 | &dev_attr_ipv4_iface_fragment_disable.attr, | |
662 | &dev_attr_ipv4_iface_incoming_forwarding_en.attr, | |
663 | &dev_attr_ipv4_iface_ttl.attr, | |
664 | &dev_attr_ipv6_iface_link_local_state.attr, | |
665 | &dev_attr_ipv6_iface_router_state.attr, | |
666 | &dev_attr_ipv6_iface_grat_neighbor_adv_en.attr, | |
667 | &dev_attr_ipv6_iface_mld_en.attr, | |
668 | &dev_attr_ipv6_iface_flow_label.attr, | |
669 | &dev_attr_ipv6_iface_traffic_class.attr, | |
670 | &dev_attr_ipv6_iface_hop_limit.attr, | |
671 | &dev_attr_ipv6_iface_nd_reachable_tmo.attr, | |
672 | &dev_attr_ipv6_iface_nd_rexmit_time.attr, | |
673 | &dev_attr_ipv6_iface_nd_stale_tmo.attr, | |
674 | &dev_attr_ipv6_iface_dup_addr_detect_cnt.attr, | |
675 | &dev_attr_ipv6_iface_router_adv_link_mtu.attr, | |
8d07913d MC |
676 | NULL, |
677 | }; | |
678 | ||
679 | static struct attribute_group iscsi_iface_group = { | |
680 | .attrs = iscsi_iface_attrs, | |
681 | .is_visible = iscsi_iface_attr_is_visible, | |
682 | }; | |
683 | ||
3e0f65b3 HZ |
684 | /* convert iscsi_ipaddress_state values to ascii string name */ |
685 | static const struct { | |
686 | enum iscsi_ipaddress_state value; | |
687 | char *name; | |
688 | } iscsi_ipaddress_state_names[] = { | |
689 | {ISCSI_IPDDRESS_STATE_UNCONFIGURED, "Unconfigured" }, | |
690 | {ISCSI_IPDDRESS_STATE_ACQUIRING, "Acquiring" }, | |
691 | {ISCSI_IPDDRESS_STATE_TENTATIVE, "Tentative" }, | |
692 | {ISCSI_IPDDRESS_STATE_VALID, "Valid" }, | |
693 | {ISCSI_IPDDRESS_STATE_DISABLING, "Disabling" }, | |
694 | {ISCSI_IPDDRESS_STATE_INVALID, "Invalid" }, | |
695 | {ISCSI_IPDDRESS_STATE_DEPRECATED, "Deprecated" }, | |
696 | }; | |
697 | ||
698 | char *iscsi_get_ipaddress_state_name(enum iscsi_ipaddress_state port_state) | |
699 | { | |
700 | int i; | |
701 | char *state = NULL; | |
702 | ||
703 | for (i = 0; i < ARRAY_SIZE(iscsi_ipaddress_state_names); i++) { | |
704 | if (iscsi_ipaddress_state_names[i].value == port_state) { | |
705 | state = iscsi_ipaddress_state_names[i].name; | |
706 | break; | |
707 | } | |
708 | } | |
709 | return state; | |
710 | } | |
711 | EXPORT_SYMBOL_GPL(iscsi_get_ipaddress_state_name); | |
712 | ||
713 | /* convert iscsi_router_state values to ascii string name */ | |
714 | static const struct { | |
715 | enum iscsi_router_state value; | |
716 | char *name; | |
717 | } iscsi_router_state_names[] = { | |
718 | {ISCSI_ROUTER_STATE_UNKNOWN, "Unknown" }, | |
719 | {ISCSI_ROUTER_STATE_ADVERTISED, "Advertised" }, | |
720 | {ISCSI_ROUTER_STATE_MANUAL, "Manual" }, | |
721 | {ISCSI_ROUTER_STATE_STALE, "Stale" }, | |
722 | }; | |
723 | ||
724 | char *iscsi_get_router_state_name(enum iscsi_router_state router_state) | |
725 | { | |
726 | int i; | |
727 | char *state = NULL; | |
728 | ||
729 | for (i = 0; i < ARRAY_SIZE(iscsi_router_state_names); i++) { | |
730 | if (iscsi_router_state_names[i].value == router_state) { | |
731 | state = iscsi_router_state_names[i].name; | |
732 | break; | |
733 | } | |
734 | } | |
735 | return state; | |
736 | } | |
737 | EXPORT_SYMBOL_GPL(iscsi_get_router_state_name); | |
738 | ||
8d07913d MC |
739 | struct iscsi_iface * |
740 | iscsi_create_iface(struct Scsi_Host *shost, struct iscsi_transport *transport, | |
741 | uint32_t iface_type, uint32_t iface_num, int dd_size) | |
742 | { | |
743 | struct iscsi_iface *iface; | |
744 | int err; | |
745 | ||
746 | iface = kzalloc(sizeof(*iface) + dd_size, GFP_KERNEL); | |
747 | if (!iface) | |
748 | return NULL; | |
749 | ||
750 | iface->transport = transport; | |
751 | iface->iface_type = iface_type; | |
752 | iface->iface_num = iface_num; | |
753 | iface->dev.release = iscsi_iface_release; | |
754 | iface->dev.class = &iscsi_iface_class; | |
755 | /* parent reference released in iscsi_iface_release */ | |
756 | iface->dev.parent = get_device(&shost->shost_gendev); | |
757 | if (iface_type == ISCSI_IFACE_TYPE_IPV4) | |
758 | dev_set_name(&iface->dev, "ipv4-iface-%u-%u", shost->host_no, | |
759 | iface_num); | |
760 | else | |
761 | dev_set_name(&iface->dev, "ipv6-iface-%u-%u", shost->host_no, | |
762 | iface_num); | |
763 | ||
764 | err = device_register(&iface->dev); | |
765 | if (err) | |
766 | goto free_iface; | |
767 | ||
768 | err = sysfs_create_group(&iface->dev.kobj, &iscsi_iface_group); | |
769 | if (err) | |
770 | goto unreg_iface; | |
771 | ||
772 | if (dd_size) | |
773 | iface->dd_data = &iface[1]; | |
774 | return iface; | |
775 | ||
776 | unreg_iface: | |
777 | device_unregister(&iface->dev); | |
778 | return NULL; | |
779 | ||
780 | free_iface: | |
781 | put_device(iface->dev.parent); | |
782 | kfree(iface); | |
783 | return NULL; | |
784 | } | |
785 | EXPORT_SYMBOL_GPL(iscsi_create_iface); | |
786 | ||
787 | void iscsi_destroy_iface(struct iscsi_iface *iface) | |
788 | { | |
789 | sysfs_remove_group(&iface->dev.kobj, &iscsi_iface_group); | |
790 | device_unregister(&iface->dev); | |
791 | } | |
792 | EXPORT_SYMBOL_GPL(iscsi_destroy_iface); | |
793 | ||
c6a4bb2e AC |
794 | /* |
795 | * Interface to display flash node params to sysfs | |
796 | */ | |
797 | ||
798 | #define ISCSI_FLASHNODE_ATTR(_prefix, _name, _mode, _show, _store) \ | |
799 | struct device_attribute dev_attr_##_prefix##_##_name = \ | |
800 | __ATTR(_name, _mode, _show, _store) | |
801 | ||
802 | /* flash node session attrs show */ | |
803 | #define iscsi_flashnode_sess_attr_show(type, name, param) \ | |
804 | static ssize_t \ | |
805 | show_##type##_##name(struct device *dev, struct device_attribute *attr, \ | |
806 | char *buf) \ | |
807 | { \ | |
808 | struct iscsi_bus_flash_session *fnode_sess = \ | |
809 | iscsi_dev_to_flash_session(dev);\ | |
810 | struct iscsi_transport *t = fnode_sess->transport; \ | |
811 | return t->get_flashnode_param(fnode_sess, param, buf); \ | |
812 | } \ | |
813 | ||
814 | ||
815 | #define iscsi_flashnode_sess_attr(type, name, param) \ | |
816 | iscsi_flashnode_sess_attr_show(type, name, param) \ | |
817 | static ISCSI_FLASHNODE_ATTR(type, name, S_IRUGO, \ | |
818 | show_##type##_##name, NULL); | |
819 | ||
820 | /* Flash node session attributes */ | |
821 | ||
822 | iscsi_flashnode_sess_attr(fnode, auto_snd_tgt_disable, | |
823 | ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE); | |
824 | iscsi_flashnode_sess_attr(fnode, discovery_session, | |
825 | ISCSI_FLASHNODE_DISCOVERY_SESS); | |
826 | iscsi_flashnode_sess_attr(fnode, portal_type, ISCSI_FLASHNODE_PORTAL_TYPE); | |
827 | iscsi_flashnode_sess_attr(fnode, entry_enable, ISCSI_FLASHNODE_ENTRY_EN); | |
828 | iscsi_flashnode_sess_attr(fnode, immediate_data, ISCSI_FLASHNODE_IMM_DATA_EN); | |
829 | iscsi_flashnode_sess_attr(fnode, initial_r2t, ISCSI_FLASHNODE_INITIAL_R2T_EN); | |
830 | iscsi_flashnode_sess_attr(fnode, data_seq_in_order, | |
831 | ISCSI_FLASHNODE_DATASEQ_INORDER); | |
832 | iscsi_flashnode_sess_attr(fnode, data_pdu_in_order, | |
833 | ISCSI_FLASHNODE_PDU_INORDER); | |
834 | iscsi_flashnode_sess_attr(fnode, chap_auth, ISCSI_FLASHNODE_CHAP_AUTH_EN); | |
835 | iscsi_flashnode_sess_attr(fnode, discovery_logout, | |
836 | ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN); | |
837 | iscsi_flashnode_sess_attr(fnode, bidi_chap, ISCSI_FLASHNODE_BIDI_CHAP_EN); | |
838 | iscsi_flashnode_sess_attr(fnode, discovery_auth_optional, | |
839 | ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL); | |
840 | iscsi_flashnode_sess_attr(fnode, erl, ISCSI_FLASHNODE_ERL); | |
841 | iscsi_flashnode_sess_attr(fnode, first_burst_len, ISCSI_FLASHNODE_FIRST_BURST); | |
842 | iscsi_flashnode_sess_attr(fnode, def_time2wait, ISCSI_FLASHNODE_DEF_TIME2WAIT); | |
843 | iscsi_flashnode_sess_attr(fnode, def_time2retain, | |
844 | ISCSI_FLASHNODE_DEF_TIME2RETAIN); | |
845 | iscsi_flashnode_sess_attr(fnode, max_outstanding_r2t, ISCSI_FLASHNODE_MAX_R2T); | |
846 | iscsi_flashnode_sess_attr(fnode, isid, ISCSI_FLASHNODE_ISID); | |
847 | iscsi_flashnode_sess_attr(fnode, tsid, ISCSI_FLASHNODE_TSID); | |
848 | iscsi_flashnode_sess_attr(fnode, max_burst_len, ISCSI_FLASHNODE_MAX_BURST); | |
849 | iscsi_flashnode_sess_attr(fnode, def_taskmgmt_tmo, | |
850 | ISCSI_FLASHNODE_DEF_TASKMGMT_TMO); | |
851 | iscsi_flashnode_sess_attr(fnode, targetalias, ISCSI_FLASHNODE_ALIAS); | |
852 | iscsi_flashnode_sess_attr(fnode, targetname, ISCSI_FLASHNODE_NAME); | |
853 | iscsi_flashnode_sess_attr(fnode, tpgt, ISCSI_FLASHNODE_TPGT); | |
854 | iscsi_flashnode_sess_attr(fnode, discovery_parent_idx, | |
855 | ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX); | |
856 | iscsi_flashnode_sess_attr(fnode, discovery_parent_type, | |
857 | ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE); | |
858 | iscsi_flashnode_sess_attr(fnode, chap_in_idx, ISCSI_FLASHNODE_CHAP_IN_IDX); | |
859 | iscsi_flashnode_sess_attr(fnode, chap_out_idx, ISCSI_FLASHNODE_CHAP_OUT_IDX); | |
860 | iscsi_flashnode_sess_attr(fnode, username, ISCSI_FLASHNODE_USERNAME); | |
861 | iscsi_flashnode_sess_attr(fnode, username_in, ISCSI_FLASHNODE_USERNAME_IN); | |
862 | iscsi_flashnode_sess_attr(fnode, password, ISCSI_FLASHNODE_PASSWORD); | |
863 | iscsi_flashnode_sess_attr(fnode, password_in, ISCSI_FLASHNODE_PASSWORD_IN); | |
864 | iscsi_flashnode_sess_attr(fnode, is_boot_target, ISCSI_FLASHNODE_IS_BOOT_TGT); | |
865 | ||
866 | static struct attribute *iscsi_flashnode_sess_attrs[] = { | |
867 | &dev_attr_fnode_auto_snd_tgt_disable.attr, | |
868 | &dev_attr_fnode_discovery_session.attr, | |
869 | &dev_attr_fnode_portal_type.attr, | |
870 | &dev_attr_fnode_entry_enable.attr, | |
871 | &dev_attr_fnode_immediate_data.attr, | |
872 | &dev_attr_fnode_initial_r2t.attr, | |
873 | &dev_attr_fnode_data_seq_in_order.attr, | |
874 | &dev_attr_fnode_data_pdu_in_order.attr, | |
875 | &dev_attr_fnode_chap_auth.attr, | |
876 | &dev_attr_fnode_discovery_logout.attr, | |
877 | &dev_attr_fnode_bidi_chap.attr, | |
878 | &dev_attr_fnode_discovery_auth_optional.attr, | |
879 | &dev_attr_fnode_erl.attr, | |
880 | &dev_attr_fnode_first_burst_len.attr, | |
881 | &dev_attr_fnode_def_time2wait.attr, | |
882 | &dev_attr_fnode_def_time2retain.attr, | |
883 | &dev_attr_fnode_max_outstanding_r2t.attr, | |
884 | &dev_attr_fnode_isid.attr, | |
885 | &dev_attr_fnode_tsid.attr, | |
886 | &dev_attr_fnode_max_burst_len.attr, | |
887 | &dev_attr_fnode_def_taskmgmt_tmo.attr, | |
888 | &dev_attr_fnode_targetalias.attr, | |
889 | &dev_attr_fnode_targetname.attr, | |
890 | &dev_attr_fnode_tpgt.attr, | |
891 | &dev_attr_fnode_discovery_parent_idx.attr, | |
892 | &dev_attr_fnode_discovery_parent_type.attr, | |
893 | &dev_attr_fnode_chap_in_idx.attr, | |
894 | &dev_attr_fnode_chap_out_idx.attr, | |
895 | &dev_attr_fnode_username.attr, | |
896 | &dev_attr_fnode_username_in.attr, | |
897 | &dev_attr_fnode_password.attr, | |
898 | &dev_attr_fnode_password_in.attr, | |
899 | &dev_attr_fnode_is_boot_target.attr, | |
900 | NULL, | |
901 | }; | |
902 | ||
903 | static umode_t iscsi_flashnode_sess_attr_is_visible(struct kobject *kobj, | |
904 | struct attribute *attr, | |
905 | int i) | |
906 | { | |
907 | struct device *dev = container_of(kobj, struct device, kobj); | |
908 | struct iscsi_bus_flash_session *fnode_sess = | |
909 | iscsi_dev_to_flash_session(dev); | |
910 | struct iscsi_transport *t = fnode_sess->transport; | |
911 | int param; | |
912 | ||
913 | if (attr == &dev_attr_fnode_auto_snd_tgt_disable.attr) { | |
914 | param = ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE; | |
915 | } else if (attr == &dev_attr_fnode_discovery_session.attr) { | |
916 | param = ISCSI_FLASHNODE_DISCOVERY_SESS; | |
917 | } else if (attr == &dev_attr_fnode_portal_type.attr) { | |
918 | param = ISCSI_FLASHNODE_PORTAL_TYPE; | |
919 | } else if (attr == &dev_attr_fnode_entry_enable.attr) { | |
920 | param = ISCSI_FLASHNODE_ENTRY_EN; | |
921 | } else if (attr == &dev_attr_fnode_immediate_data.attr) { | |
922 | param = ISCSI_FLASHNODE_IMM_DATA_EN; | |
923 | } else if (attr == &dev_attr_fnode_initial_r2t.attr) { | |
924 | param = ISCSI_FLASHNODE_INITIAL_R2T_EN; | |
925 | } else if (attr == &dev_attr_fnode_data_seq_in_order.attr) { | |
926 | param = ISCSI_FLASHNODE_DATASEQ_INORDER; | |
927 | } else if (attr == &dev_attr_fnode_data_pdu_in_order.attr) { | |
928 | param = ISCSI_FLASHNODE_PDU_INORDER; | |
929 | } else if (attr == &dev_attr_fnode_chap_auth.attr) { | |
930 | param = ISCSI_FLASHNODE_CHAP_AUTH_EN; | |
931 | } else if (attr == &dev_attr_fnode_discovery_logout.attr) { | |
932 | param = ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN; | |
933 | } else if (attr == &dev_attr_fnode_bidi_chap.attr) { | |
934 | param = ISCSI_FLASHNODE_BIDI_CHAP_EN; | |
935 | } else if (attr == &dev_attr_fnode_discovery_auth_optional.attr) { | |
936 | param = ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL; | |
937 | } else if (attr == &dev_attr_fnode_erl.attr) { | |
938 | param = ISCSI_FLASHNODE_ERL; | |
939 | } else if (attr == &dev_attr_fnode_first_burst_len.attr) { | |
940 | param = ISCSI_FLASHNODE_FIRST_BURST; | |
941 | } else if (attr == &dev_attr_fnode_def_time2wait.attr) { | |
942 | param = ISCSI_FLASHNODE_DEF_TIME2WAIT; | |
943 | } else if (attr == &dev_attr_fnode_def_time2retain.attr) { | |
944 | param = ISCSI_FLASHNODE_DEF_TIME2RETAIN; | |
945 | } else if (attr == &dev_attr_fnode_max_outstanding_r2t.attr) { | |
946 | param = ISCSI_FLASHNODE_MAX_R2T; | |
947 | } else if (attr == &dev_attr_fnode_isid.attr) { | |
948 | param = ISCSI_FLASHNODE_ISID; | |
949 | } else if (attr == &dev_attr_fnode_tsid.attr) { | |
950 | param = ISCSI_FLASHNODE_TSID; | |
951 | } else if (attr == &dev_attr_fnode_max_burst_len.attr) { | |
952 | param = ISCSI_FLASHNODE_MAX_BURST; | |
953 | } else if (attr == &dev_attr_fnode_def_taskmgmt_tmo.attr) { | |
954 | param = ISCSI_FLASHNODE_DEF_TASKMGMT_TMO; | |
955 | } else if (attr == &dev_attr_fnode_targetalias.attr) { | |
956 | param = ISCSI_FLASHNODE_ALIAS; | |
957 | } else if (attr == &dev_attr_fnode_targetname.attr) { | |
958 | param = ISCSI_FLASHNODE_NAME; | |
959 | } else if (attr == &dev_attr_fnode_tpgt.attr) { | |
960 | param = ISCSI_FLASHNODE_TPGT; | |
961 | } else if (attr == &dev_attr_fnode_discovery_parent_idx.attr) { | |
962 | param = ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX; | |
963 | } else if (attr == &dev_attr_fnode_discovery_parent_type.attr) { | |
964 | param = ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE; | |
965 | } else if (attr == &dev_attr_fnode_chap_in_idx.attr) { | |
966 | param = ISCSI_FLASHNODE_CHAP_IN_IDX; | |
967 | } else if (attr == &dev_attr_fnode_chap_out_idx.attr) { | |
968 | param = ISCSI_FLASHNODE_CHAP_OUT_IDX; | |
969 | } else if (attr == &dev_attr_fnode_username.attr) { | |
970 | param = ISCSI_FLASHNODE_USERNAME; | |
971 | } else if (attr == &dev_attr_fnode_username_in.attr) { | |
972 | param = ISCSI_FLASHNODE_USERNAME_IN; | |
973 | } else if (attr == &dev_attr_fnode_password.attr) { | |
974 | param = ISCSI_FLASHNODE_PASSWORD; | |
975 | } else if (attr == &dev_attr_fnode_password_in.attr) { | |
976 | param = ISCSI_FLASHNODE_PASSWORD_IN; | |
977 | } else if (attr == &dev_attr_fnode_is_boot_target.attr) { | |
978 | param = ISCSI_FLASHNODE_IS_BOOT_TGT; | |
979 | } else { | |
980 | WARN_ONCE(1, "Invalid flashnode session attr"); | |
981 | return 0; | |
982 | } | |
983 | ||
984 | return t->attr_is_visible(ISCSI_FLASHNODE_PARAM, param); | |
985 | } | |
986 | ||
987 | static struct attribute_group iscsi_flashnode_sess_attr_group = { | |
988 | .attrs = iscsi_flashnode_sess_attrs, | |
989 | .is_visible = iscsi_flashnode_sess_attr_is_visible, | |
990 | }; | |
991 | ||
992 | static const struct attribute_group *iscsi_flashnode_sess_attr_groups[] = { | |
993 | &iscsi_flashnode_sess_attr_group, | |
994 | NULL, | |
995 | }; | |
996 | ||
997 | static void iscsi_flashnode_sess_release(struct device *dev) | |
998 | { | |
999 | struct iscsi_bus_flash_session *fnode_sess = | |
1000 | iscsi_dev_to_flash_session(dev); | |
1001 | ||
1002 | kfree(fnode_sess->targetname); | |
1003 | kfree(fnode_sess->targetalias); | |
1004 | kfree(fnode_sess->portal_type); | |
1005 | kfree(fnode_sess); | |
1006 | } | |
1007 | ||
7988faf5 | 1008 | static const struct device_type iscsi_flashnode_sess_dev_type = { |
c6a4bb2e AC |
1009 | .name = "iscsi_flashnode_sess_dev_type", |
1010 | .groups = iscsi_flashnode_sess_attr_groups, | |
1011 | .release = iscsi_flashnode_sess_release, | |
1012 | }; | |
1013 | ||
1014 | /* flash node connection attrs show */ | |
1015 | #define iscsi_flashnode_conn_attr_show(type, name, param) \ | |
1016 | static ssize_t \ | |
1017 | show_##type##_##name(struct device *dev, struct device_attribute *attr, \ | |
1018 | char *buf) \ | |
1019 | { \ | |
1020 | struct iscsi_bus_flash_conn *fnode_conn = iscsi_dev_to_flash_conn(dev);\ | |
1021 | struct iscsi_bus_flash_session *fnode_sess = \ | |
1022 | iscsi_flash_conn_to_flash_session(fnode_conn);\ | |
1023 | struct iscsi_transport *t = fnode_conn->transport; \ | |
1024 | return t->get_flashnode_param(fnode_sess, param, buf); \ | |
1025 | } \ | |
1026 | ||
1027 | ||
1028 | #define iscsi_flashnode_conn_attr(type, name, param) \ | |
1029 | iscsi_flashnode_conn_attr_show(type, name, param) \ | |
1030 | static ISCSI_FLASHNODE_ATTR(type, name, S_IRUGO, \ | |
1031 | show_##type##_##name, NULL); | |
1032 | ||
1033 | /* Flash node connection attributes */ | |
1034 | ||
1035 | iscsi_flashnode_conn_attr(fnode, is_fw_assigned_ipv6, | |
1036 | ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6); | |
1037 | iscsi_flashnode_conn_attr(fnode, header_digest, ISCSI_FLASHNODE_HDR_DGST_EN); | |
1038 | iscsi_flashnode_conn_attr(fnode, data_digest, ISCSI_FLASHNODE_DATA_DGST_EN); | |
1039 | iscsi_flashnode_conn_attr(fnode, snack_req, ISCSI_FLASHNODE_SNACK_REQ_EN); | |
1040 | iscsi_flashnode_conn_attr(fnode, tcp_timestamp_stat, | |
1041 | ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT); | |
1042 | iscsi_flashnode_conn_attr(fnode, tcp_nagle_disable, | |
1043 | ISCSI_FLASHNODE_TCP_NAGLE_DISABLE); | |
1044 | iscsi_flashnode_conn_attr(fnode, tcp_wsf_disable, | |
1045 | ISCSI_FLASHNODE_TCP_WSF_DISABLE); | |
1046 | iscsi_flashnode_conn_attr(fnode, tcp_timer_scale, | |
1047 | ISCSI_FLASHNODE_TCP_TIMER_SCALE); | |
1048 | iscsi_flashnode_conn_attr(fnode, tcp_timestamp_enable, | |
1049 | ISCSI_FLASHNODE_TCP_TIMESTAMP_EN); | |
1050 | iscsi_flashnode_conn_attr(fnode, fragment_disable, | |
1051 | ISCSI_FLASHNODE_IP_FRAG_DISABLE); | |
1052 | iscsi_flashnode_conn_attr(fnode, keepalive_tmo, ISCSI_FLASHNODE_KEEPALIVE_TMO); | |
1053 | iscsi_flashnode_conn_attr(fnode, port, ISCSI_FLASHNODE_PORT); | |
1054 | iscsi_flashnode_conn_attr(fnode, ipaddress, ISCSI_FLASHNODE_IPADDR); | |
1055 | iscsi_flashnode_conn_attr(fnode, max_recv_dlength, | |
1056 | ISCSI_FLASHNODE_MAX_RECV_DLENGTH); | |
1057 | iscsi_flashnode_conn_attr(fnode, max_xmit_dlength, | |
1058 | ISCSI_FLASHNODE_MAX_XMIT_DLENGTH); | |
1059 | iscsi_flashnode_conn_attr(fnode, local_port, ISCSI_FLASHNODE_LOCAL_PORT); | |
1060 | iscsi_flashnode_conn_attr(fnode, ipv4_tos, ISCSI_FLASHNODE_IPV4_TOS); | |
1061 | iscsi_flashnode_conn_attr(fnode, ipv6_traffic_class, ISCSI_FLASHNODE_IPV6_TC); | |
1062 | iscsi_flashnode_conn_attr(fnode, ipv6_flow_label, | |
1063 | ISCSI_FLASHNODE_IPV6_FLOW_LABEL); | |
1064 | iscsi_flashnode_conn_attr(fnode, redirect_ipaddr, | |
1065 | ISCSI_FLASHNODE_REDIRECT_IPADDR); | |
1066 | iscsi_flashnode_conn_attr(fnode, max_segment_size, | |
1067 | ISCSI_FLASHNODE_MAX_SEGMENT_SIZE); | |
1068 | iscsi_flashnode_conn_attr(fnode, link_local_ipv6, | |
1069 | ISCSI_FLASHNODE_LINK_LOCAL_IPV6); | |
1070 | iscsi_flashnode_conn_attr(fnode, tcp_xmit_wsf, ISCSI_FLASHNODE_TCP_XMIT_WSF); | |
1071 | iscsi_flashnode_conn_attr(fnode, tcp_recv_wsf, ISCSI_FLASHNODE_TCP_RECV_WSF); | |
1072 | iscsi_flashnode_conn_attr(fnode, statsn, ISCSI_FLASHNODE_STATSN); | |
1073 | iscsi_flashnode_conn_attr(fnode, exp_statsn, ISCSI_FLASHNODE_EXP_STATSN); | |
1074 | ||
1075 | static struct attribute *iscsi_flashnode_conn_attrs[] = { | |
1076 | &dev_attr_fnode_is_fw_assigned_ipv6.attr, | |
1077 | &dev_attr_fnode_header_digest.attr, | |
1078 | &dev_attr_fnode_data_digest.attr, | |
1079 | &dev_attr_fnode_snack_req.attr, | |
1080 | &dev_attr_fnode_tcp_timestamp_stat.attr, | |
1081 | &dev_attr_fnode_tcp_nagle_disable.attr, | |
1082 | &dev_attr_fnode_tcp_wsf_disable.attr, | |
1083 | &dev_attr_fnode_tcp_timer_scale.attr, | |
1084 | &dev_attr_fnode_tcp_timestamp_enable.attr, | |
1085 | &dev_attr_fnode_fragment_disable.attr, | |
1086 | &dev_attr_fnode_max_recv_dlength.attr, | |
1087 | &dev_attr_fnode_max_xmit_dlength.attr, | |
1088 | &dev_attr_fnode_keepalive_tmo.attr, | |
1089 | &dev_attr_fnode_port.attr, | |
1090 | &dev_attr_fnode_ipaddress.attr, | |
1091 | &dev_attr_fnode_redirect_ipaddr.attr, | |
1092 | &dev_attr_fnode_max_segment_size.attr, | |
1093 | &dev_attr_fnode_local_port.attr, | |
1094 | &dev_attr_fnode_ipv4_tos.attr, | |
1095 | &dev_attr_fnode_ipv6_traffic_class.attr, | |
1096 | &dev_attr_fnode_ipv6_flow_label.attr, | |
1097 | &dev_attr_fnode_link_local_ipv6.attr, | |
1098 | &dev_attr_fnode_tcp_xmit_wsf.attr, | |
1099 | &dev_attr_fnode_tcp_recv_wsf.attr, | |
1100 | &dev_attr_fnode_statsn.attr, | |
1101 | &dev_attr_fnode_exp_statsn.attr, | |
1102 | NULL, | |
1103 | }; | |
1104 | ||
1105 | static umode_t iscsi_flashnode_conn_attr_is_visible(struct kobject *kobj, | |
1106 | struct attribute *attr, | |
1107 | int i) | |
1108 | { | |
1109 | struct device *dev = container_of(kobj, struct device, kobj); | |
1110 | struct iscsi_bus_flash_conn *fnode_conn = iscsi_dev_to_flash_conn(dev); | |
1111 | struct iscsi_transport *t = fnode_conn->transport; | |
1112 | int param; | |
1113 | ||
1114 | if (attr == &dev_attr_fnode_is_fw_assigned_ipv6.attr) { | |
1115 | param = ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6; | |
1116 | } else if (attr == &dev_attr_fnode_header_digest.attr) { | |
1117 | param = ISCSI_FLASHNODE_HDR_DGST_EN; | |
1118 | } else if (attr == &dev_attr_fnode_data_digest.attr) { | |
1119 | param = ISCSI_FLASHNODE_DATA_DGST_EN; | |
1120 | } else if (attr == &dev_attr_fnode_snack_req.attr) { | |
1121 | param = ISCSI_FLASHNODE_SNACK_REQ_EN; | |
1122 | } else if (attr == &dev_attr_fnode_tcp_timestamp_stat.attr) { | |
1123 | param = ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT; | |
1124 | } else if (attr == &dev_attr_fnode_tcp_nagle_disable.attr) { | |
1125 | param = ISCSI_FLASHNODE_TCP_NAGLE_DISABLE; | |
1126 | } else if (attr == &dev_attr_fnode_tcp_wsf_disable.attr) { | |
1127 | param = ISCSI_FLASHNODE_TCP_WSF_DISABLE; | |
1128 | } else if (attr == &dev_attr_fnode_tcp_timer_scale.attr) { | |
1129 | param = ISCSI_FLASHNODE_TCP_TIMER_SCALE; | |
1130 | } else if (attr == &dev_attr_fnode_tcp_timestamp_enable.attr) { | |
1131 | param = ISCSI_FLASHNODE_TCP_TIMESTAMP_EN; | |
1132 | } else if (attr == &dev_attr_fnode_fragment_disable.attr) { | |
1133 | param = ISCSI_FLASHNODE_IP_FRAG_DISABLE; | |
1134 | } else if (attr == &dev_attr_fnode_max_recv_dlength.attr) { | |
1135 | param = ISCSI_FLASHNODE_MAX_RECV_DLENGTH; | |
1136 | } else if (attr == &dev_attr_fnode_max_xmit_dlength.attr) { | |
1137 | param = ISCSI_FLASHNODE_MAX_XMIT_DLENGTH; | |
1138 | } else if (attr == &dev_attr_fnode_keepalive_tmo.attr) { | |
1139 | param = ISCSI_FLASHNODE_KEEPALIVE_TMO; | |
1140 | } else if (attr == &dev_attr_fnode_port.attr) { | |
1141 | param = ISCSI_FLASHNODE_PORT; | |
1142 | } else if (attr == &dev_attr_fnode_ipaddress.attr) { | |
1143 | param = ISCSI_FLASHNODE_IPADDR; | |
1144 | } else if (attr == &dev_attr_fnode_redirect_ipaddr.attr) { | |
1145 | param = ISCSI_FLASHNODE_REDIRECT_IPADDR; | |
1146 | } else if (attr == &dev_attr_fnode_max_segment_size.attr) { | |
1147 | param = ISCSI_FLASHNODE_MAX_SEGMENT_SIZE; | |
1148 | } else if (attr == &dev_attr_fnode_local_port.attr) { | |
1149 | param = ISCSI_FLASHNODE_LOCAL_PORT; | |
1150 | } else if (attr == &dev_attr_fnode_ipv4_tos.attr) { | |
1151 | param = ISCSI_FLASHNODE_IPV4_TOS; | |
1152 | } else if (attr == &dev_attr_fnode_ipv6_traffic_class.attr) { | |
1153 | param = ISCSI_FLASHNODE_IPV6_TC; | |
1154 | } else if (attr == &dev_attr_fnode_ipv6_flow_label.attr) { | |
1155 | param = ISCSI_FLASHNODE_IPV6_FLOW_LABEL; | |
1156 | } else if (attr == &dev_attr_fnode_link_local_ipv6.attr) { | |
1157 | param = ISCSI_FLASHNODE_LINK_LOCAL_IPV6; | |
1158 | } else if (attr == &dev_attr_fnode_tcp_xmit_wsf.attr) { | |
1159 | param = ISCSI_FLASHNODE_TCP_XMIT_WSF; | |
1160 | } else if (attr == &dev_attr_fnode_tcp_recv_wsf.attr) { | |
1161 | param = ISCSI_FLASHNODE_TCP_RECV_WSF; | |
1162 | } else if (attr == &dev_attr_fnode_statsn.attr) { | |
1163 | param = ISCSI_FLASHNODE_STATSN; | |
1164 | } else if (attr == &dev_attr_fnode_exp_statsn.attr) { | |
1165 | param = ISCSI_FLASHNODE_EXP_STATSN; | |
1166 | } else { | |
1167 | WARN_ONCE(1, "Invalid flashnode connection attr"); | |
1168 | return 0; | |
1169 | } | |
1170 | ||
1171 | return t->attr_is_visible(ISCSI_FLASHNODE_PARAM, param); | |
1172 | } | |
1173 | ||
1174 | static struct attribute_group iscsi_flashnode_conn_attr_group = { | |
1175 | .attrs = iscsi_flashnode_conn_attrs, | |
1176 | .is_visible = iscsi_flashnode_conn_attr_is_visible, | |
1177 | }; | |
1178 | ||
1179 | static const struct attribute_group *iscsi_flashnode_conn_attr_groups[] = { | |
1180 | &iscsi_flashnode_conn_attr_group, | |
1181 | NULL, | |
1182 | }; | |
1183 | ||
1184 | static void iscsi_flashnode_conn_release(struct device *dev) | |
1185 | { | |
1186 | struct iscsi_bus_flash_conn *fnode_conn = iscsi_dev_to_flash_conn(dev); | |
1187 | ||
1188 | kfree(fnode_conn->ipaddress); | |
1189 | kfree(fnode_conn->redirect_ipaddr); | |
1190 | kfree(fnode_conn->link_local_ipv6_addr); | |
1191 | kfree(fnode_conn); | |
1192 | } | |
1193 | ||
7988faf5 | 1194 | static const struct device_type iscsi_flashnode_conn_dev_type = { |
c6a4bb2e AC |
1195 | .name = "iscsi_flashnode_conn_dev_type", |
1196 | .groups = iscsi_flashnode_conn_attr_groups, | |
1197 | .release = iscsi_flashnode_conn_release, | |
1198 | }; | |
1199 | ||
4c1340af | 1200 | static struct bus_type iscsi_flashnode_bus; |
c6a4bb2e AC |
1201 | |
1202 | int iscsi_flashnode_bus_match(struct device *dev, | |
1203 | struct device_driver *drv) | |
1204 | { | |
1205 | if (dev->bus == &iscsi_flashnode_bus) | |
1206 | return 1; | |
1207 | return 0; | |
1208 | } | |
1209 | EXPORT_SYMBOL_GPL(iscsi_flashnode_bus_match); | |
1210 | ||
4c1340af | 1211 | static struct bus_type iscsi_flashnode_bus = { |
c6a4bb2e AC |
1212 | .name = "iscsi_flashnode", |
1213 | .match = &iscsi_flashnode_bus_match, | |
1214 | }; | |
1215 | ||
1216 | /** | |
1217 | * iscsi_create_flashnode_sess - Add flashnode session entry in sysfs | |
1218 | * @shost: pointer to host data | |
1219 | * @index: index of flashnode to add in sysfs | |
1220 | * @transport: pointer to transport data | |
1221 | * @dd_size: total size to allocate | |
1222 | * | |
1223 | * Adds a sysfs entry for the flashnode session attributes | |
1224 | * | |
1225 | * Returns: | |
e227867f | 1226 | * pointer to allocated flashnode sess on success |
c6a4bb2e AC |
1227 | * %NULL on failure |
1228 | */ | |
1229 | struct iscsi_bus_flash_session * | |
1230 | iscsi_create_flashnode_sess(struct Scsi_Host *shost, int index, | |
1231 | struct iscsi_transport *transport, | |
1232 | int dd_size) | |
1233 | { | |
1234 | struct iscsi_bus_flash_session *fnode_sess; | |
1235 | int err; | |
1236 | ||
1237 | fnode_sess = kzalloc(sizeof(*fnode_sess) + dd_size, GFP_KERNEL); | |
1238 | if (!fnode_sess) | |
1239 | return NULL; | |
1240 | ||
1241 | fnode_sess->transport = transport; | |
1242 | fnode_sess->target_id = index; | |
1243 | fnode_sess->dev.type = &iscsi_flashnode_sess_dev_type; | |
1244 | fnode_sess->dev.bus = &iscsi_flashnode_bus; | |
1245 | fnode_sess->dev.parent = &shost->shost_gendev; | |
1246 | dev_set_name(&fnode_sess->dev, "flashnode_sess-%u:%u", | |
1247 | shost->host_no, index); | |
1248 | ||
1249 | err = device_register(&fnode_sess->dev); | |
1250 | if (err) | |
1251 | goto free_fnode_sess; | |
1252 | ||
1253 | if (dd_size) | |
1254 | fnode_sess->dd_data = &fnode_sess[1]; | |
1255 | ||
1256 | return fnode_sess; | |
1257 | ||
1258 | free_fnode_sess: | |
1259 | kfree(fnode_sess); | |
1260 | return NULL; | |
1261 | } | |
1262 | EXPORT_SYMBOL_GPL(iscsi_create_flashnode_sess); | |
1263 | ||
1264 | /** | |
1265 | * iscsi_create_flashnode_conn - Add flashnode conn entry in sysfs | |
1266 | * @shost: pointer to host data | |
1267 | * @fnode_sess: pointer to the parent flashnode session entry | |
1268 | * @transport: pointer to transport data | |
1269 | * @dd_size: total size to allocate | |
1270 | * | |
1271 | * Adds a sysfs entry for the flashnode connection attributes | |
1272 | * | |
1273 | * Returns: | |
1274 | * pointer to allocated flashnode conn on success | |
1275 | * %NULL on failure | |
1276 | */ | |
1277 | struct iscsi_bus_flash_conn * | |
1278 | iscsi_create_flashnode_conn(struct Scsi_Host *shost, | |
1279 | struct iscsi_bus_flash_session *fnode_sess, | |
1280 | struct iscsi_transport *transport, | |
1281 | int dd_size) | |
1282 | { | |
1283 | struct iscsi_bus_flash_conn *fnode_conn; | |
1284 | int err; | |
1285 | ||
1286 | fnode_conn = kzalloc(sizeof(*fnode_conn) + dd_size, GFP_KERNEL); | |
1287 | if (!fnode_conn) | |
1288 | return NULL; | |
1289 | ||
1290 | fnode_conn->transport = transport; | |
1291 | fnode_conn->dev.type = &iscsi_flashnode_conn_dev_type; | |
1292 | fnode_conn->dev.bus = &iscsi_flashnode_bus; | |
1293 | fnode_conn->dev.parent = &fnode_sess->dev; | |
1294 | dev_set_name(&fnode_conn->dev, "flashnode_conn-%u:%u:0", | |
1295 | shost->host_no, fnode_sess->target_id); | |
1296 | ||
1297 | err = device_register(&fnode_conn->dev); | |
1298 | if (err) | |
1299 | goto free_fnode_conn; | |
1300 | ||
1301 | if (dd_size) | |
1302 | fnode_conn->dd_data = &fnode_conn[1]; | |
1303 | ||
1304 | return fnode_conn; | |
1305 | ||
1306 | free_fnode_conn: | |
1307 | kfree(fnode_conn); | |
1308 | return NULL; | |
1309 | } | |
1310 | EXPORT_SYMBOL_GPL(iscsi_create_flashnode_conn); | |
1311 | ||
1312 | /** | |
1313 | * iscsi_is_flashnode_conn_dev - verify passed device is to be flashnode conn | |
1314 | * @dev: device to verify | |
1315 | * @data: pointer to data containing value to use for verification | |
1316 | * | |
1317 | * Verifies if the passed device is flashnode conn device | |
1318 | * | |
1319 | * Returns: | |
1320 | * 1 on success | |
1321 | * 0 on failure | |
1322 | */ | |
7a15fdfa | 1323 | static int iscsi_is_flashnode_conn_dev(struct device *dev, void *data) |
c6a4bb2e AC |
1324 | { |
1325 | return dev->bus == &iscsi_flashnode_bus; | |
1326 | } | |
c6a4bb2e AC |
1327 | |
1328 | static int iscsi_destroy_flashnode_conn(struct iscsi_bus_flash_conn *fnode_conn) | |
1329 | { | |
1330 | device_unregister(&fnode_conn->dev); | |
1331 | return 0; | |
1332 | } | |
1333 | ||
1334 | static int flashnode_match_index(struct device *dev, void *data) | |
1335 | { | |
1336 | struct iscsi_bus_flash_session *fnode_sess = NULL; | |
1337 | int ret = 0; | |
1338 | ||
1339 | if (!iscsi_flashnode_bus_match(dev, NULL)) | |
1340 | goto exit_match_index; | |
1341 | ||
1342 | fnode_sess = iscsi_dev_to_flash_session(dev); | |
1343 | ret = (fnode_sess->target_id == *((int *)data)) ? 1 : 0; | |
1344 | ||
1345 | exit_match_index: | |
1346 | return ret; | |
1347 | } | |
1348 | ||
1349 | /** | |
1350 | * iscsi_get_flashnode_by_index -finds flashnode session entry by index | |
1351 | * @shost: pointer to host data | |
8526cb11 | 1352 | * @idx: index to match |
c6a4bb2e AC |
1353 | * |
1354 | * Finds the flashnode session object for the passed index | |
1355 | * | |
1356 | * Returns: | |
1357 | * pointer to found flashnode session object on success | |
1358 | * %NULL on failure | |
1359 | */ | |
1360 | static struct iscsi_bus_flash_session * | |
8526cb11 | 1361 | iscsi_get_flashnode_by_index(struct Scsi_Host *shost, uint32_t idx) |
c6a4bb2e AC |
1362 | { |
1363 | struct iscsi_bus_flash_session *fnode_sess = NULL; | |
1364 | struct device *dev; | |
1365 | ||
8526cb11 MC |
1366 | dev = device_find_child(&shost->shost_gendev, &idx, |
1367 | flashnode_match_index); | |
c6a4bb2e AC |
1368 | if (dev) |
1369 | fnode_sess = iscsi_dev_to_flash_session(dev); | |
1370 | ||
1371 | return fnode_sess; | |
1372 | } | |
1373 | ||
1374 | /** | |
1375 | * iscsi_find_flashnode_sess - finds flashnode session entry | |
1376 | * @shost: pointer to host data | |
1377 | * @data: pointer to data containing value to use for comparison | |
1378 | * @fn: function pointer that does actual comparison | |
1379 | * | |
1380 | * Finds the flashnode session object comparing the data passed using logic | |
1381 | * defined in passed function pointer | |
1382 | * | |
1383 | * Returns: | |
1384 | * pointer to found flashnode session device object on success | |
1385 | * %NULL on failure | |
1386 | */ | |
1387 | struct device * | |
1388 | iscsi_find_flashnode_sess(struct Scsi_Host *shost, void *data, | |
1389 | int (*fn)(struct device *dev, void *data)) | |
1390 | { | |
8526cb11 | 1391 | return device_find_child(&shost->shost_gendev, data, fn); |
c6a4bb2e AC |
1392 | } |
1393 | EXPORT_SYMBOL_GPL(iscsi_find_flashnode_sess); | |
1394 | ||
1395 | /** | |
1396 | * iscsi_find_flashnode_conn - finds flashnode connection entry | |
1397 | * @fnode_sess: pointer to parent flashnode session entry | |
c6a4bb2e AC |
1398 | * |
1399 | * Finds the flashnode connection object comparing the data passed using logic | |
1400 | * defined in passed function pointer | |
1401 | * | |
1402 | * Returns: | |
1403 | * pointer to found flashnode connection device object on success | |
1404 | * %NULL on failure | |
1405 | */ | |
1406 | struct device * | |
8526cb11 | 1407 | iscsi_find_flashnode_conn(struct iscsi_bus_flash_session *fnode_sess) |
c6a4bb2e | 1408 | { |
8526cb11 MC |
1409 | return device_find_child(&fnode_sess->dev, NULL, |
1410 | iscsi_is_flashnode_conn_dev); | |
c6a4bb2e AC |
1411 | } |
1412 | EXPORT_SYMBOL_GPL(iscsi_find_flashnode_conn); | |
1413 | ||
1414 | static int iscsi_iter_destroy_flashnode_conn_fn(struct device *dev, void *data) | |
1415 | { | |
1416 | if (!iscsi_is_flashnode_conn_dev(dev, NULL)) | |
1417 | return 0; | |
1418 | ||
1419 | return iscsi_destroy_flashnode_conn(iscsi_dev_to_flash_conn(dev)); | |
1420 | } | |
1421 | ||
1422 | /** | |
e227867f | 1423 | * iscsi_destroy_flashnode_sess - destroy flashnode session entry |
c6a4bb2e AC |
1424 | * @fnode_sess: pointer to flashnode session entry to be destroyed |
1425 | * | |
1426 | * Deletes the flashnode session entry and all children flashnode connection | |
1427 | * entries from sysfs | |
1428 | */ | |
1429 | void iscsi_destroy_flashnode_sess(struct iscsi_bus_flash_session *fnode_sess) | |
1430 | { | |
1431 | int err; | |
1432 | ||
1433 | err = device_for_each_child(&fnode_sess->dev, NULL, | |
1434 | iscsi_iter_destroy_flashnode_conn_fn); | |
1435 | if (err) | |
1436 | pr_err("Could not delete all connections for %s. Error %d.\n", | |
1437 | fnode_sess->dev.kobj.name, err); | |
1438 | ||
1439 | device_unregister(&fnode_sess->dev); | |
1440 | } | |
1441 | EXPORT_SYMBOL_GPL(iscsi_destroy_flashnode_sess); | |
1442 | ||
1443 | static int iscsi_iter_destroy_flashnode_fn(struct device *dev, void *data) | |
1444 | { | |
1445 | if (!iscsi_flashnode_bus_match(dev, NULL)) | |
1446 | return 0; | |
1447 | ||
1448 | iscsi_destroy_flashnode_sess(iscsi_dev_to_flash_session(dev)); | |
1449 | return 0; | |
1450 | } | |
1451 | ||
1452 | /** | |
e227867f | 1453 | * iscsi_destroy_all_flashnode - destroy all flashnode session entries |
c6a4bb2e AC |
1454 | * @shost: pointer to host data |
1455 | * | |
1456 | * Destroys all the flashnode session entries and all corresponding children | |
1457 | * flashnode connection entries from sysfs | |
1458 | */ | |
1459 | void iscsi_destroy_all_flashnode(struct Scsi_Host *shost) | |
1460 | { | |
1461 | device_for_each_child(&shost->shost_gendev, NULL, | |
1462 | iscsi_iter_destroy_flashnode_fn); | |
1463 | } | |
1464 | EXPORT_SYMBOL_GPL(iscsi_destroy_all_flashnode); | |
1465 | ||
90eeb01a MC |
1466 | /* |
1467 | * BSG support | |
1468 | */ | |
1469 | /** | |
1470 | * iscsi_bsg_host_dispatch - Dispatch command to LLD. | |
1471 | * @job: bsg job to be processed | |
1472 | */ | |
1473 | static int iscsi_bsg_host_dispatch(struct bsg_job *job) | |
1474 | { | |
1475 | struct Scsi_Host *shost = iscsi_job_to_shost(job); | |
1476 | struct iscsi_bsg_request *req = job->request; | |
1477 | struct iscsi_bsg_reply *reply = job->reply; | |
1478 | struct iscsi_internal *i = to_iscsi_internal(shost->transportt); | |
1479 | int cmdlen = sizeof(uint32_t); /* start with length of msgcode */ | |
1480 | int ret; | |
1481 | ||
1482 | /* check if we have the msgcode value at least */ | |
1483 | if (job->request_len < sizeof(uint32_t)) { | |
1484 | ret = -ENOMSG; | |
1485 | goto fail_host_msg; | |
1486 | } | |
1487 | ||
1488 | /* Validate the host command */ | |
1489 | switch (req->msgcode) { | |
1490 | case ISCSI_BSG_HST_VENDOR: | |
1491 | cmdlen += sizeof(struct iscsi_bsg_host_vendor); | |
1492 | if ((shost->hostt->vendor_id == 0L) || | |
1493 | (req->rqst_data.h_vendor.vendor_id != | |
1494 | shost->hostt->vendor_id)) { | |
1495 | ret = -ESRCH; | |
1496 | goto fail_host_msg; | |
1497 | } | |
1498 | break; | |
1499 | default: | |
1500 | ret = -EBADR; | |
1501 | goto fail_host_msg; | |
1502 | } | |
1503 | ||
1504 | /* check if we really have all the request data needed */ | |
1505 | if (job->request_len < cmdlen) { | |
1506 | ret = -ENOMSG; | |
1507 | goto fail_host_msg; | |
1508 | } | |
1509 | ||
1510 | ret = i->iscsi_transport->bsg_request(job); | |
1511 | if (!ret) | |
1512 | return 0; | |
1513 | ||
1514 | fail_host_msg: | |
1515 | /* return the errno failure code as the only status */ | |
1516 | BUG_ON(job->reply_len < sizeof(uint32_t)); | |
1517 | reply->reply_payload_rcv_len = 0; | |
1518 | reply->result = ret; | |
1519 | job->reply_len = sizeof(uint32_t); | |
1520 | bsg_job_done(job, ret, 0); | |
1521 | return 0; | |
1522 | } | |
1523 | ||
1524 | /** | |
1525 | * iscsi_bsg_host_add - Create and add the bsg hooks to receive requests | |
1526 | * @shost: shost for iscsi_host | |
eae627e4 | 1527 | * @ihost: iscsi_cls_host adding the structures to |
90eeb01a MC |
1528 | */ |
1529 | static int | |
1530 | iscsi_bsg_host_add(struct Scsi_Host *shost, struct iscsi_cls_host *ihost) | |
1531 | { | |
1532 | struct device *dev = &shost->shost_gendev; | |
1533 | struct iscsi_internal *i = to_iscsi_internal(shost->transportt); | |
1534 | struct request_queue *q; | |
1535 | char bsg_name[20]; | |
90eeb01a MC |
1536 | |
1537 | if (!i->iscsi_transport->bsg_request) | |
1538 | return -ENOTSUPP; | |
1539 | ||
1540 | snprintf(bsg_name, sizeof(bsg_name), "iscsi_host%d", shost->host_no); | |
aae3b069 | 1541 | q = bsg_setup_queue(dev, bsg_name, iscsi_bsg_host_dispatch, NULL, 0); |
8ae94eb6 | 1542 | if (IS_ERR(q)) { |
90eeb01a MC |
1543 | shost_printk(KERN_ERR, shost, "bsg interface failed to " |
1544 | "initialize - no request queue\n"); | |
8ae94eb6 | 1545 | return PTR_ERR(q); |
90eeb01a | 1546 | } |
8ae94eb6 | 1547 | __scsi_init_queue(shost, q); |
90eeb01a MC |
1548 | |
1549 | ihost->bsg_q = q; | |
1550 | return 0; | |
1551 | } | |
1552 | ||
30a6c652 | 1553 | static int iscsi_setup_host(struct transport_container *tc, struct device *dev, |
ee959b00 | 1554 | struct device *cdev) |
30a6c652 MC |
1555 | { |
1556 | struct Scsi_Host *shost = dev_to_shost(dev); | |
32c6e1b9 | 1557 | struct iscsi_cls_host *ihost = shost->shost_data; |
30a6c652 MC |
1558 | |
1559 | memset(ihost, 0, sizeof(*ihost)); | |
8aae18ad | 1560 | atomic_set(&ihost->nr_scans, 0); |
7970634b | 1561 | mutex_init(&ihost->mutex); |
90eeb01a MC |
1562 | |
1563 | iscsi_bsg_host_add(shost, ihost); | |
1564 | /* ignore any bsg add error - we just can't do sgio */ | |
1565 | ||
1566 | return 0; | |
1567 | } | |
1568 | ||
1569 | static int iscsi_remove_host(struct transport_container *tc, | |
1570 | struct device *dev, struct device *cdev) | |
1571 | { | |
1572 | struct Scsi_Host *shost = dev_to_shost(dev); | |
1573 | struct iscsi_cls_host *ihost = shost->shost_data; | |
1574 | ||
5e28b8d8 | 1575 | bsg_remove_queue(ihost->bsg_q); |
30a6c652 MC |
1576 | return 0; |
1577 | } | |
1578 | ||
1579 | static DECLARE_TRANSPORT_CLASS(iscsi_host_class, | |
1580 | "iscsi_host", | |
1581 | iscsi_setup_host, | |
90eeb01a | 1582 | iscsi_remove_host, |
30a6c652 MC |
1583 | NULL); |
1584 | ||
0896b752 AA |
1585 | static DECLARE_TRANSPORT_CLASS(iscsi_session_class, |
1586 | "iscsi_session", | |
1da177e4 LT |
1587 | NULL, |
1588 | NULL, | |
1589 | NULL); | |
1590 | ||
0896b752 AA |
1591 | static DECLARE_TRANSPORT_CLASS(iscsi_connection_class, |
1592 | "iscsi_connection", | |
1da177e4 LT |
1593 | NULL, |
1594 | NULL, | |
1595 | NULL); | |
0896b752 AA |
1596 | |
1597 | static struct sock *nls; | |
0b950672 | 1598 | static DEFINE_MUTEX(rx_queue_mutex); |
0896b752 | 1599 | |
7b7232f3 MC |
1600 | static LIST_HEAD(sesslist); |
1601 | static DEFINE_SPINLOCK(sesslock); | |
7b8631b5 | 1602 | static LIST_HEAD(connlist); |
0ab71045 | 1603 | static LIST_HEAD(connlist_err); |
7b8631b5 | 1604 | static DEFINE_SPINLOCK(connlock); |
0896b752 | 1605 | |
b5c7a12d MC |
1606 | static uint32_t iscsi_conn_get_sid(struct iscsi_cls_conn *conn) |
1607 | { | |
1608 | struct iscsi_cls_session *sess = iscsi_dev_to_session(conn->dev.parent); | |
1609 | return sess->sid; | |
1610 | } | |
1611 | ||
1612 | /* | |
1613 | * Returns the matching session to a given sid | |
1614 | */ | |
1615 | static struct iscsi_cls_session *iscsi_session_lookup(uint32_t sid) | |
7b7232f3 MC |
1616 | { |
1617 | unsigned long flags; | |
1618 | struct iscsi_cls_session *sess; | |
1619 | ||
1620 | spin_lock_irqsave(&sesslock, flags); | |
1621 | list_for_each_entry(sess, &sesslist, sess_list) { | |
b5c7a12d | 1622 | if (sess->sid == sid) { |
7b7232f3 MC |
1623 | spin_unlock_irqrestore(&sesslock, flags); |
1624 | return sess; | |
1625 | } | |
1626 | } | |
1627 | spin_unlock_irqrestore(&sesslock, flags); | |
1628 | return NULL; | |
1629 | } | |
1630 | ||
b5c7a12d MC |
1631 | /* |
1632 | * Returns the matching connection to a given sid / cid tuple | |
1633 | */ | |
1634 | static struct iscsi_cls_conn *iscsi_conn_lookup(uint32_t sid, uint32_t cid) | |
7b7232f3 MC |
1635 | { |
1636 | unsigned long flags; | |
1637 | struct iscsi_cls_conn *conn; | |
1638 | ||
1639 | spin_lock_irqsave(&connlock, flags); | |
1640 | list_for_each_entry(conn, &connlist, conn_list) { | |
b5c7a12d | 1641 | if ((conn->cid == cid) && (iscsi_conn_get_sid(conn) == sid)) { |
7b7232f3 MC |
1642 | spin_unlock_irqrestore(&connlock, flags); |
1643 | return conn; | |
1644 | } | |
1645 | } | |
1646 | spin_unlock_irqrestore(&connlock, flags); | |
1647 | return NULL; | |
1648 | } | |
1649 | ||
7b8631b5 MC |
1650 | /* |
1651 | * The following functions can be used by LLDs that allocate | |
1652 | * their own scsi_hosts or by software iscsi LLDs | |
1653 | */ | |
6eabafbe MC |
1654 | static struct { |
1655 | int value; | |
1656 | char *name; | |
1657 | } iscsi_session_state_names[] = { | |
1658 | { ISCSI_SESSION_LOGGED_IN, "LOGGED_IN" }, | |
1659 | { ISCSI_SESSION_FAILED, "FAILED" }, | |
1660 | { ISCSI_SESSION_FREE, "FREE" }, | |
1661 | }; | |
1662 | ||
3b0f208a | 1663 | static const char *iscsi_session_state_name(int state) |
6eabafbe MC |
1664 | { |
1665 | int i; | |
1666 | char *name = NULL; | |
1667 | ||
1668 | for (i = 0; i < ARRAY_SIZE(iscsi_session_state_names); i++) { | |
1669 | if (iscsi_session_state_names[i].value == state) { | |
1670 | name = iscsi_session_state_names[i].name; | |
1671 | break; | |
1672 | } | |
1673 | } | |
1674 | return name; | |
1675 | } | |
1676 | ||
1677 | int iscsi_session_chkready(struct iscsi_cls_session *session) | |
1678 | { | |
6eabafbe MC |
1679 | int err; |
1680 | ||
6eabafbe MC |
1681 | switch (session->state) { |
1682 | case ISCSI_SESSION_LOGGED_IN: | |
1683 | err = 0; | |
1684 | break; | |
1685 | case ISCSI_SESSION_FAILED: | |
9a1a69a1 | 1686 | err = DID_IMM_RETRY << 16; |
6eabafbe MC |
1687 | break; |
1688 | case ISCSI_SESSION_FREE: | |
56d7fcfa | 1689 | err = DID_TRANSPORT_FAILFAST << 16; |
6eabafbe MC |
1690 | break; |
1691 | default: | |
1692 | err = DID_NO_CONNECT << 16; | |
1693 | break; | |
1694 | } | |
6eabafbe MC |
1695 | return err; |
1696 | } | |
1697 | EXPORT_SYMBOL_GPL(iscsi_session_chkready); | |
1698 | ||
17fa575e MR |
1699 | int iscsi_is_session_online(struct iscsi_cls_session *session) |
1700 | { | |
1701 | unsigned long flags; | |
1702 | int ret = 0; | |
1703 | ||
1704 | spin_lock_irqsave(&session->lock, flags); | |
1705 | if (session->state == ISCSI_SESSION_LOGGED_IN) | |
1706 | ret = 1; | |
1707 | spin_unlock_irqrestore(&session->lock, flags); | |
1708 | return ret; | |
1709 | } | |
1710 | EXPORT_SYMBOL_GPL(iscsi_is_session_online); | |
1711 | ||
7b8631b5 MC |
1712 | static void iscsi_session_release(struct device *dev) |
1713 | { | |
1714 | struct iscsi_cls_session *session = iscsi_dev_to_session(dev); | |
7b8631b5 | 1715 | struct Scsi_Host *shost; |
0896b752 | 1716 | |
7b8631b5 MC |
1717 | shost = iscsi_session_to_shost(session); |
1718 | scsi_host_put(shost); | |
632248aa | 1719 | ISCSI_DBG_TRANS_SESSION(session, "Completing session release\n"); |
7b8631b5 | 1720 | kfree(session); |
7b8631b5 | 1721 | } |
0896b752 | 1722 | |
6260a5d2 | 1723 | int iscsi_is_session_dev(const struct device *dev) |
7b8631b5 MC |
1724 | { |
1725 | return dev->release == iscsi_session_release; | |
1726 | } | |
6260a5d2 | 1727 | EXPORT_SYMBOL_GPL(iscsi_is_session_dev); |
0896b752 | 1728 | |
a4804cd6 MC |
1729 | static int iscsi_iter_session_fn(struct device *dev, void *data) |
1730 | { | |
1731 | void (* fn) (struct iscsi_cls_session *) = data; | |
1732 | ||
1733 | if (!iscsi_is_session_dev(dev)) | |
1734 | return 0; | |
1735 | fn(iscsi_dev_to_session(dev)); | |
1736 | return 0; | |
1737 | } | |
1738 | ||
1739 | void iscsi_host_for_each_session(struct Scsi_Host *shost, | |
1740 | void (*fn)(struct iscsi_cls_session *)) | |
1741 | { | |
1742 | device_for_each_child(&shost->shost_gendev, fn, | |
1743 | iscsi_iter_session_fn); | |
1744 | } | |
1745 | EXPORT_SYMBOL_GPL(iscsi_host_for_each_session); | |
1746 | ||
8aae18ad MC |
1747 | /** |
1748 | * iscsi_scan_finished - helper to report when running scans are done | |
1749 | * @shost: scsi host | |
1750 | * @time: scan run time | |
1751 | * | |
1752 | * This function can be used by drives like qla4xxx to report to the scsi | |
1753 | * layer when the scans it kicked off at module load time are done. | |
1754 | */ | |
1755 | int iscsi_scan_finished(struct Scsi_Host *shost, unsigned long time) | |
1756 | { | |
32c6e1b9 | 1757 | struct iscsi_cls_host *ihost = shost->shost_data; |
8aae18ad MC |
1758 | /* |
1759 | * qla4xxx will have kicked off some session unblocks before calling | |
1760 | * scsi_scan_host, so just wait for them to complete. | |
1761 | */ | |
1762 | return !atomic_read(&ihost->nr_scans); | |
1763 | } | |
1764 | EXPORT_SYMBOL_GPL(iscsi_scan_finished); | |
1765 | ||
7970634b MC |
1766 | struct iscsi_scan_data { |
1767 | unsigned int channel; | |
1768 | unsigned int id; | |
9cb78c16 | 1769 | u64 lun; |
1d645088 | 1770 | enum scsi_scan_mode rescan; |
7970634b MC |
1771 | }; |
1772 | ||
1773 | static int iscsi_user_scan_session(struct device *dev, void *data) | |
30a6c652 | 1774 | { |
7970634b | 1775 | struct iscsi_scan_data *scan_data = data; |
30a6c652 | 1776 | struct iscsi_cls_session *session; |
7970634b MC |
1777 | struct Scsi_Host *shost; |
1778 | struct iscsi_cls_host *ihost; | |
1779 | unsigned long flags; | |
1780 | unsigned int id; | |
1781 | ||
1782 | if (!iscsi_is_session_dev(dev)) | |
1783 | return 0; | |
1784 | ||
1785 | session = iscsi_dev_to_session(dev); | |
632248aa MC |
1786 | |
1787 | ISCSI_DBG_TRANS_SESSION(session, "Scanning session\n"); | |
1788 | ||
7970634b MC |
1789 | shost = iscsi_session_to_shost(session); |
1790 | ihost = shost->shost_data; | |
30a6c652 MC |
1791 | |
1792 | mutex_lock(&ihost->mutex); | |
7970634b MC |
1793 | spin_lock_irqsave(&session->lock, flags); |
1794 | if (session->state != ISCSI_SESSION_LOGGED_IN) { | |
1795 | spin_unlock_irqrestore(&session->lock, flags); | |
632248aa | 1796 | goto user_scan_exit; |
30a6c652 | 1797 | } |
7970634b MC |
1798 | id = session->target_id; |
1799 | spin_unlock_irqrestore(&session->lock, flags); | |
30a6c652 | 1800 | |
7970634b MC |
1801 | if (id != ISCSI_MAX_TARGET) { |
1802 | if ((scan_data->channel == SCAN_WILD_CARD || | |
1803 | scan_data->channel == 0) && | |
1804 | (scan_data->id == SCAN_WILD_CARD || | |
1805 | scan_data->id == id)) | |
1806 | scsi_scan_target(&session->dev, 0, id, | |
1d645088 | 1807 | scan_data->lun, scan_data->rescan); |
7970634b | 1808 | } |
632248aa MC |
1809 | |
1810 | user_scan_exit: | |
7970634b | 1811 | mutex_unlock(&ihost->mutex); |
632248aa | 1812 | ISCSI_DBG_TRANS_SESSION(session, "Completed session scan\n"); |
30a6c652 MC |
1813 | return 0; |
1814 | } | |
1815 | ||
7970634b | 1816 | static int iscsi_user_scan(struct Scsi_Host *shost, uint channel, |
9cb78c16 | 1817 | uint id, u64 lun) |
7970634b MC |
1818 | { |
1819 | struct iscsi_scan_data scan_data; | |
1820 | ||
1821 | scan_data.channel = channel; | |
1822 | scan_data.id = id; | |
1823 | scan_data.lun = lun; | |
1d645088 | 1824 | scan_data.rescan = SCSI_SCAN_MANUAL; |
7970634b MC |
1825 | |
1826 | return device_for_each_child(&shost->shost_gendev, &scan_data, | |
1827 | iscsi_user_scan_session); | |
1828 | } | |
1829 | ||
bd976f62 MC |
1830 | static void iscsi_scan_session(struct work_struct *work) |
1831 | { | |
1832 | struct iscsi_cls_session *session = | |
1833 | container_of(work, struct iscsi_cls_session, scan_work); | |
8aae18ad | 1834 | struct Scsi_Host *shost = iscsi_session_to_shost(session); |
32c6e1b9 | 1835 | struct iscsi_cls_host *ihost = shost->shost_data; |
7970634b | 1836 | struct iscsi_scan_data scan_data; |
bd976f62 | 1837 | |
7970634b MC |
1838 | scan_data.channel = 0; |
1839 | scan_data.id = SCAN_WILD_CARD; | |
1840 | scan_data.lun = SCAN_WILD_CARD; | |
1d645088 | 1841 | scan_data.rescan = SCSI_SCAN_RESCAN; |
bd976f62 | 1842 | |
7970634b | 1843 | iscsi_user_scan_session(&session->dev, &scan_data); |
8aae18ad | 1844 | atomic_dec(&ihost->nr_scans); |
bd976f62 MC |
1845 | } |
1846 | ||
c01be6dc MC |
1847 | /** |
1848 | * iscsi_block_scsi_eh - block scsi eh until session state has transistioned | |
e6d4ef45 | 1849 | * @cmd: scsi cmd passed to scsi eh handler |
c01be6dc MC |
1850 | * |
1851 | * If the session is down this function will wait for the recovery | |
1852 | * timer to fire or for the session to be logged back in. If the | |
1853 | * recovery timer fires then FAST_IO_FAIL is returned. The caller | |
1854 | * should pass this error value to the scsi eh. | |
1855 | */ | |
1856 | int iscsi_block_scsi_eh(struct scsi_cmnd *cmd) | |
1857 | { | |
1858 | struct iscsi_cls_session *session = | |
1859 | starget_to_session(scsi_target(cmd->device)); | |
1860 | unsigned long flags; | |
1861 | int ret = 0; | |
1862 | ||
1863 | spin_lock_irqsave(&session->lock, flags); | |
1864 | while (session->state != ISCSI_SESSION_LOGGED_IN) { | |
1865 | if (session->state == ISCSI_SESSION_FREE) { | |
1866 | ret = FAST_IO_FAIL; | |
1867 | break; | |
1868 | } | |
1869 | spin_unlock_irqrestore(&session->lock, flags); | |
1870 | msleep(1000); | |
1871 | spin_lock_irqsave(&session->lock, flags); | |
1872 | } | |
1873 | spin_unlock_irqrestore(&session->lock, flags); | |
1874 | return ret; | |
1875 | } | |
1876 | EXPORT_SYMBOL_GPL(iscsi_block_scsi_eh); | |
1877 | ||
c4028958 | 1878 | static void session_recovery_timedout(struct work_struct *work) |
30a6c652 | 1879 | { |
c4028958 DH |
1880 | struct iscsi_cls_session *session = |
1881 | container_of(work, struct iscsi_cls_session, | |
1882 | recovery_work.work); | |
6eabafbe | 1883 | unsigned long flags; |
30a6c652 | 1884 | |
322d739d MC |
1885 | iscsi_cls_session_printk(KERN_INFO, session, |
1886 | "session recovery timed out after %d secs\n", | |
1887 | session->recovery_tmo); | |
30a6c652 | 1888 | |
6eabafbe MC |
1889 | spin_lock_irqsave(&session->lock, flags); |
1890 | switch (session->state) { | |
1891 | case ISCSI_SESSION_FAILED: | |
1892 | session->state = ISCSI_SESSION_FREE; | |
1893 | break; | |
1894 | case ISCSI_SESSION_LOGGED_IN: | |
1895 | case ISCSI_SESSION_FREE: | |
1896 | /* we raced with the unblock's flush */ | |
1897 | spin_unlock_irqrestore(&session->lock, flags); | |
1898 | return; | |
1899 | } | |
1900 | spin_unlock_irqrestore(&session->lock, flags); | |
1901 | ||
632248aa | 1902 | ISCSI_DBG_TRANS_SESSION(session, "Unblocking SCSI target\n"); |
5d9fb5cc | 1903 | scsi_target_unblock(&session->dev, SDEV_TRANSPORT_OFFLINE); |
632248aa | 1904 | ISCSI_DBG_TRANS_SESSION(session, "Completed unblocking SCSI target\n"); |
71f053e5 MC |
1905 | |
1906 | if (session->transport->session_recovery_timedout) | |
1907 | session->transport->session_recovery_timedout(session); | |
30a6c652 MC |
1908 | } |
1909 | ||
45ab33b6 | 1910 | static void __iscsi_unblock_session(struct work_struct *work) |
6eabafbe | 1911 | { |
45ab33b6 MC |
1912 | struct iscsi_cls_session *session = |
1913 | container_of(work, struct iscsi_cls_session, | |
1914 | unblock_work); | |
bd976f62 | 1915 | struct Scsi_Host *shost = iscsi_session_to_shost(session); |
32c6e1b9 | 1916 | struct iscsi_cls_host *ihost = shost->shost_data; |
6eabafbe MC |
1917 | unsigned long flags; |
1918 | ||
632248aa | 1919 | ISCSI_DBG_TRANS_SESSION(session, "Unblocking session\n"); |
45ab33b6 MC |
1920 | /* |
1921 | * The recovery and unblock work get run from the same workqueue, | |
1922 | * so try to cancel it if it was going to run after this unblock. | |
1923 | */ | |
1924 | cancel_delayed_work(&session->recovery_work); | |
6eabafbe MC |
1925 | spin_lock_irqsave(&session->lock, flags); |
1926 | session->state = ISCSI_SESSION_LOGGED_IN; | |
1927 | spin_unlock_irqrestore(&session->lock, flags); | |
45ab33b6 | 1928 | /* start IO */ |
5d9fb5cc | 1929 | scsi_target_unblock(&session->dev, SDEV_RUNNING); |
8aae18ad MC |
1930 | /* |
1931 | * Only do kernel scanning if the driver is properly hooked into | |
1932 | * the async scanning code (drivers like iscsi_tcp do login and | |
1933 | * scanning from userspace). | |
1934 | */ | |
1935 | if (shost->hostt->scan_finished) { | |
06d25af4 | 1936 | if (scsi_queue_work(shost, &session->scan_work)) |
8aae18ad MC |
1937 | atomic_inc(&ihost->nr_scans); |
1938 | } | |
632248aa | 1939 | ISCSI_DBG_TRANS_SESSION(session, "Completed unblocking session\n"); |
6eabafbe | 1940 | } |
45ab33b6 MC |
1941 | |
1942 | /** | |
1943 | * iscsi_unblock_session - set a session as logged in and start IO. | |
1944 | * @session: iscsi session | |
1945 | * | |
1946 | * Mark a session as ready to accept IO. | |
1947 | */ | |
1948 | void iscsi_unblock_session(struct iscsi_cls_session *session) | |
1949 | { | |
7ce9fc5e MC |
1950 | flush_work(&session->block_work); |
1951 | ||
45ab33b6 MC |
1952 | queue_work(iscsi_eh_timer_workq, &session->unblock_work); |
1953 | /* | |
1d726aa6 MC |
1954 | * Blocking the session can be done from any context so we only |
1955 | * queue the block work. Make sure the unblock work has completed | |
1956 | * because it flushes/cancels the other works and updates the state. | |
45ab33b6 | 1957 | */ |
1d726aa6 | 1958 | flush_work(&session->unblock_work); |
45ab33b6 | 1959 | } |
30a6c652 MC |
1960 | EXPORT_SYMBOL_GPL(iscsi_unblock_session); |
1961 | ||
45ab33b6 | 1962 | static void __iscsi_block_session(struct work_struct *work) |
30a6c652 | 1963 | { |
45ab33b6 MC |
1964 | struct iscsi_cls_session *session = |
1965 | container_of(work, struct iscsi_cls_session, | |
1966 | block_work); | |
6eabafbe MC |
1967 | unsigned long flags; |
1968 | ||
632248aa | 1969 | ISCSI_DBG_TRANS_SESSION(session, "Blocking session\n"); |
6eabafbe MC |
1970 | spin_lock_irqsave(&session->lock, flags); |
1971 | session->state = ISCSI_SESSION_FAILED; | |
1972 | spin_unlock_irqrestore(&session->lock, flags); | |
30a6c652 | 1973 | scsi_target_block(&session->dev); |
632248aa | 1974 | ISCSI_DBG_TRANS_SESSION(session, "Completed SCSI target blocking\n"); |
fdd46dcb MC |
1975 | if (session->recovery_tmo >= 0) |
1976 | queue_delayed_work(iscsi_eh_timer_workq, | |
1977 | &session->recovery_work, | |
1978 | session->recovery_tmo * HZ); | |
30a6c652 | 1979 | } |
45ab33b6 MC |
1980 | |
1981 | void iscsi_block_session(struct iscsi_cls_session *session) | |
1982 | { | |
1983 | queue_work(iscsi_eh_timer_workq, &session->block_work); | |
1984 | } | |
30a6c652 MC |
1985 | EXPORT_SYMBOL_GPL(iscsi_block_session); |
1986 | ||
26974789 MC |
1987 | static void __iscsi_unbind_session(struct work_struct *work) |
1988 | { | |
1989 | struct iscsi_cls_session *session = | |
1990 | container_of(work, struct iscsi_cls_session, | |
1991 | unbind_work); | |
1992 | struct Scsi_Host *shost = iscsi_session_to_shost(session); | |
32c6e1b9 | 1993 | struct iscsi_cls_host *ihost = shost->shost_data; |
7970634b | 1994 | unsigned long flags; |
8d4a690c | 1995 | unsigned int target_id; |
26974789 | 1996 | |
632248aa MC |
1997 | ISCSI_DBG_TRANS_SESSION(session, "Unbinding session\n"); |
1998 | ||
26974789 MC |
1999 | /* Prevent new scans and make sure scanning is not in progress */ |
2000 | mutex_lock(&ihost->mutex); | |
7970634b MC |
2001 | spin_lock_irqsave(&session->lock, flags); |
2002 | if (session->target_id == ISCSI_MAX_TARGET) { | |
2003 | spin_unlock_irqrestore(&session->lock, flags); | |
26974789 | 2004 | mutex_unlock(&ihost->mutex); |
13e60d3b | 2005 | goto unbind_session_exit; |
26974789 | 2006 | } |
8d4a690c MC |
2007 | |
2008 | target_id = session->target_id; | |
7970634b MC |
2009 | session->target_id = ISCSI_MAX_TARGET; |
2010 | spin_unlock_irqrestore(&session->lock, flags); | |
26974789 MC |
2011 | mutex_unlock(&ihost->mutex); |
2012 | ||
e463f96b MC |
2013 | scsi_remove_target(&session->dev); |
2014 | ||
8d4a690c MC |
2015 | if (session->ida_used) |
2016 | ida_simple_remove(&iscsi_sess_ida, target_id); | |
2017 | ||
13e60d3b | 2018 | unbind_session_exit: |
26974789 | 2019 | iscsi_session_event(session, ISCSI_KEVENT_UNBIND_SESSION); |
632248aa | 2020 | ISCSI_DBG_TRANS_SESSION(session, "Completed target removal\n"); |
26974789 MC |
2021 | } |
2022 | ||
cc6b32ee FM |
2023 | static void __iscsi_destroy_session(struct work_struct *work) |
2024 | { | |
2025 | struct iscsi_cls_session *session = | |
2026 | container_of(work, struct iscsi_cls_session, destroy_work); | |
2027 | ||
2028 | session->transport->destroy_session(session); | |
2029 | } | |
2030 | ||
7b8631b5 | 2031 | struct iscsi_cls_session * |
5d91e209 MC |
2032 | iscsi_alloc_session(struct Scsi_Host *shost, struct iscsi_transport *transport, |
2033 | int dd_size) | |
7b8631b5 MC |
2034 | { |
2035 | struct iscsi_cls_session *session; | |
7b8631b5 | 2036 | |
5d91e209 | 2037 | session = kzalloc(sizeof(*session) + dd_size, |
b5c7a12d | 2038 | GFP_KERNEL); |
7b8631b5 | 2039 | if (!session) |
f53a88da MC |
2040 | return NULL; |
2041 | ||
7b8631b5 | 2042 | session->transport = transport; |
0c70d84b | 2043 | session->creator = -1; |
30a6c652 | 2044 | session->recovery_tmo = 120; |
9c8108a4 | 2045 | session->recovery_tmo_sysfs_override = false; |
6eabafbe | 2046 | session->state = ISCSI_SESSION_FREE; |
c4028958 | 2047 | INIT_DELAYED_WORK(&session->recovery_work, session_recovery_timedout); |
30a6c652 | 2048 | INIT_LIST_HEAD(&session->sess_list); |
45ab33b6 MC |
2049 | INIT_WORK(&session->unblock_work, __iscsi_unblock_session); |
2050 | INIT_WORK(&session->block_work, __iscsi_block_session); | |
26974789 | 2051 | INIT_WORK(&session->unbind_work, __iscsi_unbind_session); |
bd976f62 | 2052 | INIT_WORK(&session->scan_work, iscsi_scan_session); |
cc6b32ee | 2053 | INIT_WORK(&session->destroy_work, __iscsi_destroy_session); |
6eabafbe | 2054 | spin_lock_init(&session->lock); |
7b8631b5 | 2055 | |
6a8a0d36 MC |
2056 | /* this is released in the dev's release function */ |
2057 | scsi_host_get(shost); | |
8434aa8b MC |
2058 | session->dev.parent = &shost->shost_gendev; |
2059 | session->dev.release = iscsi_session_release; | |
2060 | device_initialize(&session->dev); | |
5d91e209 | 2061 | if (dd_size) |
b5c7a12d | 2062 | session->dd_data = &session[1]; |
632248aa MC |
2063 | |
2064 | ISCSI_DBG_TRANS_SESSION(session, "Completed session allocation\n"); | |
8434aa8b MC |
2065 | return session; |
2066 | } | |
2067 | EXPORT_SYMBOL_GPL(iscsi_alloc_session); | |
2068 | ||
6a8a0d36 | 2069 | int iscsi_add_session(struct iscsi_cls_session *session, unsigned int target_id) |
8434aa8b | 2070 | { |
26974789 | 2071 | unsigned long flags; |
8d4a690c | 2072 | int id = 0; |
8434aa8b | 2073 | int err; |
b5c7a12d | 2074 | |
41be1444 | 2075 | session->sid = atomic_add_return(1, &iscsi_session_nr); |
7970634b | 2076 | |
8d4a690c MC |
2077 | if (target_id == ISCSI_MAX_TARGET) { |
2078 | id = ida_simple_get(&iscsi_sess_ida, 0, 0, GFP_KERNEL); | |
7970634b | 2079 | |
8d4a690c | 2080 | if (id < 0) { |
7970634b | 2081 | iscsi_cls_session_printk(KERN_ERR, session, |
8d4a690c MC |
2082 | "Failure in Target ID Allocation\n"); |
2083 | return id; | |
7970634b | 2084 | } |
8d4a690c MC |
2085 | session->target_id = (unsigned int)id; |
2086 | session->ida_used = true; | |
2087 | } else | |
2088 | session->target_id = target_id; | |
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) | |
2116 | ida_simple_remove(&iscsi_sess_ida, session->target_id); | |
2117 | ||
8434aa8b | 2118 | return err; |
7b8631b5 | 2119 | } |
8434aa8b | 2120 | EXPORT_SYMBOL_GPL(iscsi_add_session); |
7b8631b5 MC |
2121 | |
2122 | /** | |
8434aa8b MC |
2123 | * iscsi_create_session - create iscsi class session |
2124 | * @shost: scsi host | |
2125 | * @transport: iscsi transport | |
5d91e209 | 2126 | * @dd_size: private driver data size |
eb44820c | 2127 | * @target_id: which target |
7b8631b5 | 2128 | * |
8434aa8b | 2129 | * This can be called from a LLD or iscsi_transport. |
eb44820c | 2130 | */ |
8434aa8b | 2131 | struct iscsi_cls_session * |
5d91e209 MC |
2132 | iscsi_create_session(struct Scsi_Host *shost, struct iscsi_transport *transport, |
2133 | int dd_size, unsigned int target_id) | |
8434aa8b MC |
2134 | { |
2135 | struct iscsi_cls_session *session; | |
2136 | ||
5d91e209 | 2137 | session = iscsi_alloc_session(shost, transport, dd_size); |
8434aa8b MC |
2138 | if (!session) |
2139 | return NULL; | |
2140 | ||
6a8a0d36 | 2141 | if (iscsi_add_session(session, target_id)) { |
8434aa8b MC |
2142 | iscsi_free_session(session); |
2143 | return NULL; | |
2144 | } | |
2145 | return session; | |
2146 | } | |
2147 | EXPORT_SYMBOL_GPL(iscsi_create_session); | |
2148 | ||
26974789 MC |
2149 | static void iscsi_conn_release(struct device *dev) |
2150 | { | |
2151 | struct iscsi_cls_conn *conn = iscsi_dev_to_conn(dev); | |
2152 | struct device *parent = conn->dev.parent; | |
2153 | ||
632248aa | 2154 | ISCSI_DBG_TRANS_CONN(conn, "Releasing conn\n"); |
26974789 MC |
2155 | kfree(conn); |
2156 | put_device(parent); | |
2157 | } | |
2158 | ||
2159 | static int iscsi_is_conn_dev(const struct device *dev) | |
2160 | { | |
2161 | return dev->release == iscsi_conn_release; | |
2162 | } | |
2163 | ||
2164 | static int iscsi_iter_destroy_conn_fn(struct device *dev, void *data) | |
2165 | { | |
2166 | if (!iscsi_is_conn_dev(dev)) | |
2167 | return 0; | |
2168 | return iscsi_destroy_conn(iscsi_dev_to_conn(dev)); | |
2169 | } | |
2170 | ||
8434aa8b | 2171 | void iscsi_remove_session(struct iscsi_cls_session *session) |
7b8631b5 | 2172 | { |
26974789 MC |
2173 | unsigned long flags; |
2174 | int err; | |
2175 | ||
632248aa MC |
2176 | ISCSI_DBG_TRANS_SESSION(session, "Removing session\n"); |
2177 | ||
26974789 | 2178 | spin_lock_irqsave(&sesslock, flags); |
93bf02e5 MC |
2179 | if (!list_empty(&session->sess_list)) |
2180 | list_del(&session->sess_list); | |
26974789 | 2181 | spin_unlock_irqrestore(&sesslock, flags); |
30a6c652 | 2182 | |
1d726aa6 MC |
2183 | flush_work(&session->block_work); |
2184 | flush_work(&session->unblock_work); | |
2185 | cancel_delayed_work_sync(&session->recovery_work); | |
26974789 MC |
2186 | /* |
2187 | * If we are blocked let commands flow again. The lld or iscsi | |
2188 | * layer should set up the queuecommand to fail commands. | |
45ab33b6 MC |
2189 | * We assume that LLD will not be calling block/unblock while |
2190 | * removing the session. | |
26974789 | 2191 | */ |
6eabafbe MC |
2192 | spin_lock_irqsave(&session->lock, flags); |
2193 | session->state = ISCSI_SESSION_FREE; | |
2194 | spin_unlock_irqrestore(&session->lock, flags); | |
bd976f62 | 2195 | |
5d9fb5cc | 2196 | scsi_target_unblock(&session->dev, SDEV_TRANSPORT_OFFLINE); |
45ab33b6 | 2197 | /* flush running scans then delete devices */ |
90e96313 | 2198 | flush_work(&session->scan_work); |
165aa2bf ML |
2199 | /* flush running unbind operations */ |
2200 | flush_work(&session->unbind_work); | |
45ab33b6 | 2201 | __iscsi_unbind_session(&session->unbind_work); |
30a6c652 | 2202 | |
26974789 MC |
2203 | /* hw iscsi may not have removed all connections from session */ |
2204 | err = device_for_each_child(&session->dev, NULL, | |
2205 | iscsi_iter_destroy_conn_fn); | |
2206 | if (err) | |
322d739d MC |
2207 | iscsi_cls_session_printk(KERN_ERR, session, |
2208 | "Could not delete all connections " | |
2209 | "for session. Error %d.\n", err); | |
8434aa8b | 2210 | |
7b8631b5 | 2211 | transport_unregister_device(&session->dev); |
632248aa MC |
2212 | |
2213 | ISCSI_DBG_TRANS_SESSION(session, "Completing session removal\n"); | |
8434aa8b MC |
2214 | device_del(&session->dev); |
2215 | } | |
2216 | EXPORT_SYMBOL_GPL(iscsi_remove_session); | |
2217 | ||
23d6fefb MC |
2218 | static void iscsi_stop_conn(struct iscsi_cls_conn *conn, int flag) |
2219 | { | |
2220 | ISCSI_DBG_TRANS_CONN(conn, "Stopping conn.\n"); | |
2221 | ||
2222 | switch (flag) { | |
2223 | case STOP_CONN_RECOVER: | |
49c5606b | 2224 | WRITE_ONCE(conn->state, ISCSI_CONN_FAILED); |
23d6fefb MC |
2225 | break; |
2226 | case STOP_CONN_TERM: | |
49c5606b | 2227 | WRITE_ONCE(conn->state, ISCSI_CONN_DOWN); |
23d6fefb MC |
2228 | break; |
2229 | default: | |
2230 | iscsi_cls_conn_printk(KERN_ERR, conn, "invalid stop flag %d\n", | |
2231 | flag); | |
2232 | return; | |
2233 | } | |
2234 | ||
2235 | conn->transport->stop_conn(conn, flag); | |
2236 | ISCSI_DBG_TRANS_CONN(conn, "Stopping conn done.\n"); | |
2237 | } | |
2238 | ||
378fd345 MC |
2239 | static void iscsi_ep_disconnect(struct iscsi_cls_conn *conn, bool is_active) |
2240 | { | |
2241 | struct iscsi_cls_session *session = iscsi_conn_to_session(conn); | |
2242 | struct iscsi_endpoint *ep; | |
2243 | ||
2244 | ISCSI_DBG_TRANS_CONN(conn, "disconnect ep.\n"); | |
49c5606b | 2245 | WRITE_ONCE(conn->state, ISCSI_CONN_FAILED); |
378fd345 MC |
2246 | |
2247 | if (!conn->ep || !session->transport->ep_disconnect) | |
2248 | return; | |
2249 | ||
2250 | ep = conn->ep; | |
2251 | conn->ep = NULL; | |
2252 | ||
2253 | session->transport->unbind_conn(conn, is_active); | |
2254 | session->transport->ep_disconnect(ep); | |
2255 | ISCSI_DBG_TRANS_CONN(conn, "disconnect ep done.\n"); | |
2256 | } | |
2257 | ||
65d284a7 MC |
2258 | static void iscsi_if_disconnect_bound_ep(struct iscsi_cls_conn *conn, |
2259 | struct iscsi_endpoint *ep, | |
2260 | bool is_active) | |
2261 | { | |
2262 | /* Check if this was a conn error and the kernel took ownership */ | |
a6f78341 | 2263 | spin_lock_irq(&conn->lock); |
65d284a7 | 2264 | if (!test_bit(ISCSI_CLS_CONN_BIT_CLEANUP, &conn->flags)) { |
a6f78341 | 2265 | spin_unlock_irq(&conn->lock); |
65d284a7 MC |
2266 | iscsi_ep_disconnect(conn, is_active); |
2267 | } else { | |
a6f78341 | 2268 | spin_unlock_irq(&conn->lock); |
65d284a7 MC |
2269 | ISCSI_DBG_TRANS_CONN(conn, "flush kernel conn cleanup.\n"); |
2270 | mutex_unlock(&conn->ep_mutex); | |
2271 | ||
2272 | flush_work(&conn->cleanup_work); | |
491763d5 MC |
2273 | /* |
2274 | * Userspace is now done with the EP so we can release the ref | |
2275 | * iscsi_cleanup_conn_work_fn took. | |
2276 | */ | |
2277 | iscsi_put_endpoint(ep); | |
65d284a7 MC |
2278 | mutex_lock(&conn->ep_mutex); |
2279 | } | |
2280 | } | |
2281 | ||
23d6fefb MC |
2282 | static int iscsi_if_stop_conn(struct iscsi_transport *transport, |
2283 | struct iscsi_uevent *ev) | |
2284 | { | |
2285 | int flag = ev->u.stop_conn.flag; | |
2286 | struct iscsi_cls_conn *conn; | |
2287 | ||
2288 | conn = iscsi_conn_lookup(ev->u.stop_conn.sid, ev->u.stop_conn.cid); | |
2289 | if (!conn) | |
2290 | return -EINVAL; | |
2291 | ||
2292 | ISCSI_DBG_TRANS_CONN(conn, "iscsi if conn stop.\n"); | |
2293 | /* | |
2294 | * If this is a termination we have to call stop_conn with that flag | |
2295 | * so the correct states get set. If we haven't run the work yet try to | |
2296 | * avoid the extra run. | |
2297 | */ | |
2298 | if (flag == STOP_CONN_TERM) { | |
2299 | cancel_work_sync(&conn->cleanup_work); | |
2300 | iscsi_stop_conn(conn, flag); | |
2301 | } else { | |
65d284a7 MC |
2302 | /* |
2303 | * For offload, when iscsid is restarted it won't know about | |
2304 | * existing endpoints so it can't do a ep_disconnect. We clean | |
2305 | * it up here for userspace. | |
2306 | */ | |
2307 | mutex_lock(&conn->ep_mutex); | |
2308 | if (conn->ep) | |
2309 | iscsi_if_disconnect_bound_ep(conn, conn->ep, true); | |
2310 | mutex_unlock(&conn->ep_mutex); | |
2311 | ||
23d6fefb MC |
2312 | /* |
2313 | * Figure out if it was the kernel or userspace initiating this. | |
2314 | */ | |
a6f78341 | 2315 | spin_lock_irq(&conn->lock); |
23d6fefb | 2316 | if (!test_and_set_bit(ISCSI_CLS_CONN_BIT_CLEANUP, &conn->flags)) { |
a6f78341 | 2317 | spin_unlock_irq(&conn->lock); |
23d6fefb MC |
2318 | iscsi_stop_conn(conn, flag); |
2319 | } else { | |
a6f78341 | 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 | */ | |
a6f78341 | 2329 | spin_lock_irq(&conn->lock); |
23d6fefb | 2330 | clear_bit(ISCSI_CLS_CONN_BIT_CLEANUP, &conn->flags); |
a6f78341 | 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); | |
491763d5 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 | ||
8434aa8b MC |
2367 | void iscsi_free_session(struct iscsi_cls_session *session) |
2368 | { | |
632248aa | 2369 | ISCSI_DBG_TRANS_SESSION(session, "Freeing session\n"); |
26974789 | 2370 | iscsi_session_event(session, ISCSI_KEVENT_DESTROY_SESSION); |
8434aa8b | 2371 | put_device(&session->dev); |
7b8631b5 | 2372 | } |
8434aa8b MC |
2373 | EXPORT_SYMBOL_GPL(iscsi_free_session); |
2374 | ||
7b8631b5 MC |
2375 | /** |
2376 | * iscsi_create_conn - create iscsi class connection | |
2377 | * @session: iscsi cls session | |
5d91e209 | 2378 | * @dd_size: private driver data size |
7b8631b5 MC |
2379 | * @cid: connection id |
2380 | * | |
2381 | * This can be called from a LLD or iscsi_transport. The connection | |
2382 | * is child of the session so cid must be unique for all connections | |
2383 | * on the session. | |
b5c7a12d MC |
2384 | * |
2385 | * Since we do not support MCS, cid will normally be zero. In some cases | |
2386 | * for software iscsi we could be trying to preallocate a connection struct | |
2387 | * in which case there could be two connection structs and cid would be | |
2388 | * non-zero. | |
eb44820c | 2389 | */ |
7b8631b5 | 2390 | struct iscsi_cls_conn * |
5d91e209 | 2391 | iscsi_create_conn(struct iscsi_cls_session *session, int dd_size, uint32_t cid) |
7b8631b5 MC |
2392 | { |
2393 | struct iscsi_transport *transport = session->transport; | |
7b8631b5 | 2394 | struct iscsi_cls_conn *conn; |
26974789 | 2395 | unsigned long flags; |
7b8631b5 MC |
2396 | int err; |
2397 | ||
5d91e209 | 2398 | conn = kzalloc(sizeof(*conn) + dd_size, GFP_KERNEL); |
7b8631b5 MC |
2399 | if (!conn) |
2400 | return NULL; | |
5d91e209 | 2401 | if (dd_size) |
7b8631b5 MC |
2402 | conn->dd_data = &conn[1]; |
2403 | ||
22a39fbb | 2404 | mutex_init(&conn->ep_mutex); |
a6f78341 | 2405 | spin_lock_init(&conn->lock); |
7b8631b5 | 2406 | INIT_LIST_HEAD(&conn->conn_list); |
23d6fefb | 2407 | INIT_WORK(&conn->cleanup_work, iscsi_cleanup_conn_work_fn); |
7b8631b5 | 2408 | conn->transport = transport; |
b5c7a12d | 2409 | conn->cid = cid; |
49c5606b | 2410 | WRITE_ONCE(conn->state, ISCSI_CONN_DOWN); |
7b8631b5 MC |
2411 | |
2412 | /* this is released in the dev's release function */ | |
2413 | if (!get_device(&session->dev)) | |
43a145a3 | 2414 | goto free_conn; |
b5c7a12d | 2415 | |
71610f55 | 2416 | dev_set_name(&conn->dev, "connection%d:%u", session->sid, cid); |
7b8631b5 MC |
2417 | conn->dev.parent = &session->dev; |
2418 | conn->dev.release = iscsi_conn_release; | |
2419 | err = device_register(&conn->dev); | |
2420 | if (err) { | |
322d739d MC |
2421 | iscsi_cls_session_printk(KERN_ERR, session, "could not " |
2422 | "register connection's dev\n"); | |
7b8631b5 MC |
2423 | goto release_parent_ref; |
2424 | } | |
f3c893e3 GKB |
2425 | err = transport_register_device(&conn->dev); |
2426 | if (err) { | |
2427 | iscsi_cls_session_printk(KERN_ERR, session, "could not " | |
2428 | "register transport's dev\n"); | |
2429 | goto release_conn_ref; | |
2430 | } | |
26974789 MC |
2431 | |
2432 | spin_lock_irqsave(&connlock, flags); | |
2433 | list_add(&conn->conn_list, &connlist); | |
26974789 | 2434 | spin_unlock_irqrestore(&connlock, flags); |
632248aa MC |
2435 | |
2436 | ISCSI_DBG_TRANS_CONN(conn, "Completed conn creation\n"); | |
7b8631b5 MC |
2437 | return conn; |
2438 | ||
f3c893e3 | 2439 | release_conn_ref: |
6dc1c7ab QM |
2440 | device_unregister(&conn->dev); |
2441 | put_device(&session->dev); | |
2442 | return NULL; | |
7b8631b5 MC |
2443 | release_parent_ref: |
2444 | put_device(&session->dev); | |
2445 | free_conn: | |
2446 | kfree(conn); | |
2447 | return NULL; | |
2448 | } | |
2449 | ||
2450 | EXPORT_SYMBOL_GPL(iscsi_create_conn); | |
2451 | ||
2452 | /** | |
2453 | * iscsi_destroy_conn - destroy iscsi class connection | |
eb44820c | 2454 | * @conn: iscsi cls session |
7b8631b5 | 2455 | * |
26974789 | 2456 | * This can be called from a LLD or iscsi_transport. |
eb44820c | 2457 | */ |
7b8631b5 MC |
2458 | int iscsi_destroy_conn(struct iscsi_cls_conn *conn) |
2459 | { | |
26974789 MC |
2460 | unsigned long flags; |
2461 | ||
2462 | spin_lock_irqsave(&connlock, flags); | |
26974789 MC |
2463 | list_del(&conn->conn_list); |
2464 | spin_unlock_irqrestore(&connlock, flags); | |
2465 | ||
7b8631b5 | 2466 | transport_unregister_device(&conn->dev); |
632248aa | 2467 | ISCSI_DBG_TRANS_CONN(conn, "Completing conn destruction\n"); |
7b8631b5 MC |
2468 | device_unregister(&conn->dev); |
2469 | return 0; | |
2470 | } | |
7b8631b5 MC |
2471 | EXPORT_SYMBOL_GPL(iscsi_destroy_conn); |
2472 | ||
b1d19e8c MC |
2473 | void iscsi_put_conn(struct iscsi_cls_conn *conn) |
2474 | { | |
2475 | put_device(&conn->dev); | |
2476 | } | |
2477 | EXPORT_SYMBOL_GPL(iscsi_put_conn); | |
2478 | ||
2479 | void iscsi_get_conn(struct iscsi_cls_conn *conn) | |
2480 | { | |
2481 | get_device(&conn->dev); | |
2482 | } | |
2483 | EXPORT_SYMBOL_GPL(iscsi_get_conn); | |
2484 | ||
7b8631b5 MC |
2485 | /* |
2486 | * iscsi interface functions | |
2487 | */ | |
0896b752 AA |
2488 | static struct iscsi_internal * |
2489 | iscsi_if_transport_lookup(struct iscsi_transport *tt) | |
2490 | { | |
2491 | struct iscsi_internal *priv; | |
2492 | unsigned long flags; | |
2493 | ||
2494 | spin_lock_irqsave(&iscsi_transport_lock, flags); | |
2495 | list_for_each_entry(priv, &iscsi_transports, list) { | |
2496 | if (tt == priv->iscsi_transport) { | |
2497 | spin_unlock_irqrestore(&iscsi_transport_lock, flags); | |
2498 | return priv; | |
2499 | } | |
2500 | } | |
2501 | spin_unlock_irqrestore(&iscsi_transport_lock, flags); | |
2502 | return NULL; | |
2503 | } | |
1da177e4 | 2504 | |
53cb8a1f | 2505 | static int |
43514774 | 2506 | iscsi_multicast_skb(struct sk_buff *skb, uint32_t group, gfp_t gfp) |
53cb8a1f | 2507 | { |
43514774 | 2508 | return nlmsg_multicast(nls, skb, 0, group, gfp); |
1da177e4 | 2509 | } |
1da177e4 | 2510 | |
af170928 CL |
2511 | static int |
2512 | iscsi_unicast_skb(struct sk_buff *skb, u32 portid) | |
2513 | { | |
2514 | return nlmsg_unicast(nls, skb, portid); | |
2515 | } | |
2516 | ||
7b7232f3 | 2517 | int iscsi_recv_pdu(struct iscsi_cls_conn *conn, struct iscsi_hdr *hdr, |
0896b752 | 2518 | char *data, uint32_t data_size) |
1da177e4 | 2519 | { |
0896b752 AA |
2520 | struct nlmsghdr *nlh; |
2521 | struct sk_buff *skb; | |
2522 | struct iscsi_uevent *ev; | |
0896b752 | 2523 | char *pdu; |
790f39a2 | 2524 | struct iscsi_internal *priv; |
e07ebea0 H |
2525 | int len = nlmsg_total_size(sizeof(*ev) + sizeof(struct iscsi_hdr) + |
2526 | data_size); | |
0896b752 | 2527 | |
790f39a2 MC |
2528 | priv = iscsi_if_transport_lookup(conn->transport); |
2529 | if (!priv) | |
2530 | return -EINVAL; | |
2531 | ||
43a145a3 | 2532 | skb = alloc_skb(len, GFP_ATOMIC); |
0896b752 | 2533 | if (!skb) { |
e5bd7b54 | 2534 | iscsi_conn_error_event(conn, ISCSI_ERR_CONN_FAILED); |
322d739d MC |
2535 | iscsi_cls_conn_printk(KERN_ERR, conn, "can not deliver " |
2536 | "control PDU: OOM\n"); | |
0896b752 AA |
2537 | return -ENOMEM; |
2538 | } | |
1da177e4 | 2539 | |
43514774 | 2540 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); |
e07ebea0 | 2541 | ev = nlmsg_data(nlh); |
0896b752 AA |
2542 | memset(ev, 0, sizeof(*ev)); |
2543 | ev->transport_handle = iscsi_handle(conn->transport); | |
2544 | ev->type = ISCSI_KEVENT_RECV_PDU; | |
b5c7a12d MC |
2545 | ev->r.recv_req.cid = conn->cid; |
2546 | ev->r.recv_req.sid = iscsi_conn_get_sid(conn); | |
0896b752 AA |
2547 | pdu = (char*)ev + sizeof(*ev); |
2548 | memcpy(pdu, hdr, sizeof(struct iscsi_hdr)); | |
2549 | memcpy(pdu + sizeof(struct iscsi_hdr), data, data_size); | |
1da177e4 | 2550 | |
43514774 | 2551 | return iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_ATOMIC); |
1da177e4 | 2552 | } |
0896b752 | 2553 | EXPORT_SYMBOL_GPL(iscsi_recv_pdu); |
1da177e4 | 2554 | |
43514774 MC |
2555 | int iscsi_offload_mesg(struct Scsi_Host *shost, |
2556 | struct iscsi_transport *transport, uint32_t type, | |
2557 | char *data, uint16_t data_size) | |
2558 | { | |
2559 | struct nlmsghdr *nlh; | |
2560 | struct sk_buff *skb; | |
2561 | struct iscsi_uevent *ev; | |
e07ebea0 | 2562 | int len = nlmsg_total_size(sizeof(*ev) + data_size); |
43514774 | 2563 | |
a541f840 | 2564 | skb = alloc_skb(len, GFP_ATOMIC); |
43514774 MC |
2565 | if (!skb) { |
2566 | printk(KERN_ERR "can not deliver iscsi offload message:OOM\n"); | |
2567 | return -ENOMEM; | |
2568 | } | |
2569 | ||
2570 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); | |
e07ebea0 | 2571 | ev = nlmsg_data(nlh); |
43514774 MC |
2572 | memset(ev, 0, sizeof(*ev)); |
2573 | ev->type = type; | |
2574 | ev->transport_handle = iscsi_handle(transport); | |
2575 | switch (type) { | |
2576 | case ISCSI_KEVENT_PATH_REQ: | |
2577 | ev->r.req_path.host_no = shost->host_no; | |
2578 | break; | |
2579 | case ISCSI_KEVENT_IF_DOWN: | |
2580 | ev->r.notify_if_down.host_no = shost->host_no; | |
2581 | break; | |
2582 | } | |
2583 | ||
2584 | memcpy((char *)ev + sizeof(*ev), data, data_size); | |
2585 | ||
a541f840 | 2586 | return iscsi_multicast_skb(skb, ISCSI_NL_GRP_UIP, GFP_ATOMIC); |
43514774 MC |
2587 | } |
2588 | EXPORT_SYMBOL_GPL(iscsi_offload_mesg); | |
2589 | ||
e5bd7b54 | 2590 | void iscsi_conn_error_event(struct iscsi_cls_conn *conn, enum iscsi_err error) |
1da177e4 | 2591 | { |
0896b752 AA |
2592 | struct nlmsghdr *nlh; |
2593 | struct sk_buff *skb; | |
2594 | struct iscsi_uevent *ev; | |
790f39a2 | 2595 | struct iscsi_internal *priv; |
e07ebea0 | 2596 | int len = nlmsg_total_size(sizeof(*ev)); |
a6f78341 | 2597 | unsigned long flags; |
49c5606b | 2598 | int state; |
0ab71045 | 2599 | |
a6f78341 | 2600 | spin_lock_irqsave(&conn->lock, flags); |
49c5606b MC |
2601 | /* |
2602 | * Userspace will only do a stop call if we are at least bound. And, we | |
2603 | * only need to do the in kernel cleanup if in the UP state so cmds can | |
2604 | * be released to upper layers. If in other states just wait for | |
2605 | * userspace to avoid races that can leave the cleanup_work queued. | |
2606 | */ | |
2607 | state = READ_ONCE(conn->state); | |
2608 | switch (state) { | |
2609 | case ISCSI_CONN_BOUND: | |
2610 | case ISCSI_CONN_UP: | |
2611 | if (!test_and_set_bit(ISCSI_CLS_CONN_BIT_CLEANUP, | |
2612 | &conn->flags)) { | |
2613 | queue_work(iscsi_conn_cleanup_workq, | |
2614 | &conn->cleanup_work); | |
2615 | } | |
2616 | break; | |
2617 | default: | |
2618 | ISCSI_DBG_TRANS_CONN(conn, "Got conn error in state %d\n", | |
2619 | state); | |
2620 | break; | |
2621 | } | |
a6f78341 | 2622 | spin_unlock_irqrestore(&conn->lock, flags); |
0896b752 | 2623 | |
790f39a2 MC |
2624 | priv = iscsi_if_transport_lookup(conn->transport); |
2625 | if (!priv) | |
2626 | return; | |
2627 | ||
43a145a3 | 2628 | skb = alloc_skb(len, GFP_ATOMIC); |
0896b752 | 2629 | if (!skb) { |
322d739d MC |
2630 | iscsi_cls_conn_printk(KERN_ERR, conn, "gracefully ignored " |
2631 | "conn error (%d)\n", error); | |
0896b752 AA |
2632 | return; |
2633 | } | |
2634 | ||
43514774 | 2635 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); |
e07ebea0 | 2636 | ev = nlmsg_data(nlh); |
0896b752 AA |
2637 | ev->transport_handle = iscsi_handle(conn->transport); |
2638 | ev->type = ISCSI_KEVENT_CONN_ERROR; | |
0896b752 | 2639 | ev->r.connerror.error = error; |
b5c7a12d MC |
2640 | ev->r.connerror.cid = conn->cid; |
2641 | ev->r.connerror.sid = iscsi_conn_get_sid(conn); | |
1da177e4 | 2642 | |
43514774 | 2643 | iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_ATOMIC); |
1da177e4 | 2644 | |
322d739d MC |
2645 | iscsi_cls_conn_printk(KERN_INFO, conn, "detected conn error (%d)\n", |
2646 | error); | |
0896b752 | 2647 | } |
e5bd7b54 | 2648 | EXPORT_SYMBOL_GPL(iscsi_conn_error_event); |
0896b752 | 2649 | |
17fa575e MR |
2650 | void iscsi_conn_login_event(struct iscsi_cls_conn *conn, |
2651 | enum iscsi_conn_state state) | |
2652 | { | |
2653 | struct nlmsghdr *nlh; | |
2654 | struct sk_buff *skb; | |
2655 | struct iscsi_uevent *ev; | |
2656 | struct iscsi_internal *priv; | |
e07ebea0 | 2657 | int len = nlmsg_total_size(sizeof(*ev)); |
17fa575e MR |
2658 | |
2659 | priv = iscsi_if_transport_lookup(conn->transport); | |
2660 | if (!priv) | |
2661 | return; | |
2662 | ||
2663 | skb = alloc_skb(len, GFP_ATOMIC); | |
2664 | if (!skb) { | |
2665 | iscsi_cls_conn_printk(KERN_ERR, conn, "gracefully ignored " | |
2666 | "conn login (%d)\n", state); | |
2667 | return; | |
2668 | } | |
2669 | ||
2670 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); | |
e07ebea0 | 2671 | ev = nlmsg_data(nlh); |
17fa575e MR |
2672 | ev->transport_handle = iscsi_handle(conn->transport); |
2673 | ev->type = ISCSI_KEVENT_CONN_LOGIN_STATE; | |
2674 | ev->r.conn_login.state = state; | |
2675 | ev->r.conn_login.cid = conn->cid; | |
2676 | ev->r.conn_login.sid = iscsi_conn_get_sid(conn); | |
2677 | iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_ATOMIC); | |
2678 | ||
2679 | iscsi_cls_conn_printk(KERN_INFO, conn, "detected conn login (%d)\n", | |
2680 | state); | |
2681 | } | |
2682 | EXPORT_SYMBOL_GPL(iscsi_conn_login_event); | |
2683 | ||
a11e2545 VC |
2684 | void iscsi_post_host_event(uint32_t host_no, struct iscsi_transport *transport, |
2685 | enum iscsi_host_event_code code, uint32_t data_size, | |
2686 | uint8_t *data) | |
2687 | { | |
2688 | struct nlmsghdr *nlh; | |
2689 | struct sk_buff *skb; | |
2690 | struct iscsi_uevent *ev; | |
e07ebea0 | 2691 | int len = nlmsg_total_size(sizeof(*ev) + data_size); |
a11e2545 | 2692 | |
49d0e64b | 2693 | skb = alloc_skb(len, GFP_NOIO); |
a11e2545 VC |
2694 | if (!skb) { |
2695 | printk(KERN_ERR "gracefully ignored host event (%d):%d OOM\n", | |
2696 | host_no, code); | |
2697 | return; | |
2698 | } | |
2699 | ||
2700 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); | |
e07ebea0 | 2701 | ev = nlmsg_data(nlh); |
a11e2545 VC |
2702 | ev->transport_handle = iscsi_handle(transport); |
2703 | ev->type = ISCSI_KEVENT_HOST_EVENT; | |
2704 | ev->r.host_event.host_no = host_no; | |
2705 | ev->r.host_event.code = code; | |
2706 | ev->r.host_event.data_size = data_size; | |
2707 | ||
2708 | if (data_size) | |
2709 | memcpy((char *)ev + sizeof(*ev), data, data_size); | |
2710 | ||
49d0e64b | 2711 | iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_NOIO); |
a11e2545 VC |
2712 | } |
2713 | EXPORT_SYMBOL_GPL(iscsi_post_host_event); | |
2714 | ||
ac20c7bf VC |
2715 | void iscsi_ping_comp_event(uint32_t host_no, struct iscsi_transport *transport, |
2716 | uint32_t status, uint32_t pid, uint32_t data_size, | |
2717 | uint8_t *data) | |
2718 | { | |
2719 | struct nlmsghdr *nlh; | |
2720 | struct sk_buff *skb; | |
2721 | struct iscsi_uevent *ev; | |
e07ebea0 | 2722 | int len = nlmsg_total_size(sizeof(*ev) + data_size); |
ac20c7bf | 2723 | |
49d0e64b | 2724 | skb = alloc_skb(len, GFP_NOIO); |
ac20c7bf VC |
2725 | if (!skb) { |
2726 | printk(KERN_ERR "gracefully ignored ping comp: OOM\n"); | |
2727 | return; | |
2728 | } | |
2729 | ||
2730 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); | |
e07ebea0 | 2731 | ev = nlmsg_data(nlh); |
ac20c7bf VC |
2732 | ev->transport_handle = iscsi_handle(transport); |
2733 | ev->type = ISCSI_KEVENT_PING_COMP; | |
2734 | ev->r.ping_comp.host_no = host_no; | |
2735 | ev->r.ping_comp.status = status; | |
2736 | ev->r.ping_comp.pid = pid; | |
2737 | ev->r.ping_comp.data_size = data_size; | |
2738 | memcpy((char *)ev + sizeof(*ev), data, data_size); | |
2739 | ||
49d0e64b | 2740 | iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_NOIO); |
ac20c7bf VC |
2741 | } |
2742 | EXPORT_SYMBOL_GPL(iscsi_ping_comp_event); | |
2743 | ||
0896b752 | 2744 | static int |
af170928 | 2745 | iscsi_if_send_reply(u32 portid, int type, void *payload, int size) |
0896b752 AA |
2746 | { |
2747 | struct sk_buff *skb; | |
2748 | struct nlmsghdr *nlh; | |
e07ebea0 | 2749 | int len = nlmsg_total_size(size); |
0896b752 | 2750 | |
43a145a3 | 2751 | skb = alloc_skb(len, GFP_ATOMIC); |
239a7dc2 MC |
2752 | if (!skb) { |
2753 | printk(KERN_ERR "Could not allocate skb to send reply.\n"); | |
2754 | return -ENOMEM; | |
2755 | } | |
0896b752 | 2756 | |
af170928 | 2757 | nlh = __nlmsg_put(skb, 0, 0, type, (len - sizeof(*nlh)), 0); |
e07ebea0 | 2758 | memcpy(nlmsg_data(nlh), payload, size); |
af170928 | 2759 | return iscsi_unicast_skb(skb, portid); |
1da177e4 | 2760 | } |
1da177e4 | 2761 | |
7b8631b5 | 2762 | static int |
5b940adf | 2763 | iscsi_if_get_stats(struct iscsi_transport *transport, struct nlmsghdr *nlh) |
7b8631b5 | 2764 | { |
e07ebea0 | 2765 | struct iscsi_uevent *ev = nlmsg_data(nlh); |
7b8631b5 MC |
2766 | struct iscsi_stats *stats; |
2767 | struct sk_buff *skbstat; | |
2768 | struct iscsi_cls_conn *conn; | |
2769 | struct nlmsghdr *nlhstat; | |
2770 | struct iscsi_uevent *evstat; | |
790f39a2 | 2771 | struct iscsi_internal *priv; |
e07ebea0 H |
2772 | int len = nlmsg_total_size(sizeof(*ev) + |
2773 | sizeof(struct iscsi_stats) + | |
2774 | sizeof(struct iscsi_stats_custom) * | |
2775 | ISCSI_STATS_CUSTOM_MAX); | |
7b8631b5 | 2776 | int err = 0; |
0896b752 | 2777 | |
790f39a2 MC |
2778 | priv = iscsi_if_transport_lookup(transport); |
2779 | if (!priv) | |
2780 | return -EINVAL; | |
2781 | ||
b5c7a12d | 2782 | conn = iscsi_conn_lookup(ev->u.get_stats.sid, ev->u.get_stats.cid); |
7b8631b5 MC |
2783 | if (!conn) |
2784 | return -EEXIST; | |
0896b752 | 2785 | |
7b8631b5 MC |
2786 | do { |
2787 | int actual_size; | |
0896b752 | 2788 | |
43a145a3 | 2789 | skbstat = alloc_skb(len, GFP_ATOMIC); |
7b8631b5 | 2790 | if (!skbstat) { |
322d739d MC |
2791 | iscsi_cls_conn_printk(KERN_ERR, conn, "can not " |
2792 | "deliver stats: OOM\n"); | |
7b8631b5 MC |
2793 | return -ENOMEM; |
2794 | } | |
2795 | ||
43514774 | 2796 | nlhstat = __nlmsg_put(skbstat, 0, 0, 0, |
7b8631b5 | 2797 | (len - sizeof(*nlhstat)), 0); |
e07ebea0 | 2798 | evstat = nlmsg_data(nlhstat); |
7b8631b5 MC |
2799 | memset(evstat, 0, sizeof(*evstat)); |
2800 | evstat->transport_handle = iscsi_handle(conn->transport); | |
2801 | evstat->type = nlh->nlmsg_type; | |
b5c7a12d MC |
2802 | evstat->u.get_stats.cid = |
2803 | ev->u.get_stats.cid; | |
2804 | evstat->u.get_stats.sid = | |
2805 | ev->u.get_stats.sid; | |
7b8631b5 MC |
2806 | stats = (struct iscsi_stats *) |
2807 | ((char*)evstat + sizeof(*evstat)); | |
2808 | memset(stats, 0, sizeof(*stats)); | |
2809 | ||
7b7232f3 | 2810 | transport->get_stats(conn, stats); |
e07ebea0 H |
2811 | actual_size = nlmsg_total_size(sizeof(struct iscsi_uevent) + |
2812 | sizeof(struct iscsi_stats) + | |
2813 | sizeof(struct iscsi_stats_custom) * | |
2814 | stats->custom_length); | |
7b8631b5 | 2815 | actual_size -= sizeof(*nlhstat); |
e07ebea0 | 2816 | actual_size = nlmsg_msg_size(actual_size); |
5b940adf | 2817 | skb_trim(skbstat, NLMSG_ALIGN(actual_size)); |
7b8631b5 MC |
2818 | nlhstat->nlmsg_len = actual_size; |
2819 | ||
43514774 MC |
2820 | err = iscsi_multicast_skb(skbstat, ISCSI_NL_GRP_ISCSID, |
2821 | GFP_ATOMIC); | |
7b8631b5 MC |
2822 | } while (err < 0 && err != -ECONNREFUSED); |
2823 | ||
2824 | return err; | |
0896b752 AA |
2825 | } |
2826 | ||
53cb8a1f | 2827 | /** |
26974789 MC |
2828 | * iscsi_session_event - send session destr. completion event |
2829 | * @session: iscsi class session | |
2830 | * @event: type of event | |
eb44820c | 2831 | */ |
26974789 MC |
2832 | int iscsi_session_event(struct iscsi_cls_session *session, |
2833 | enum iscsi_uevent_e event) | |
53cb8a1f MC |
2834 | { |
2835 | struct iscsi_internal *priv; | |
53cb8a1f MC |
2836 | struct Scsi_Host *shost; |
2837 | struct iscsi_uevent *ev; | |
2838 | struct sk_buff *skb; | |
2839 | struct nlmsghdr *nlh; | |
e07ebea0 | 2840 | int rc, len = nlmsg_total_size(sizeof(*ev)); |
53cb8a1f | 2841 | |
26974789 | 2842 | priv = iscsi_if_transport_lookup(session->transport); |
53cb8a1f MC |
2843 | if (!priv) |
2844 | return -EINVAL; | |
53cb8a1f MC |
2845 | shost = iscsi_session_to_shost(session); |
2846 | ||
43a145a3 | 2847 | skb = alloc_skb(len, GFP_KERNEL); |
53cb8a1f | 2848 | if (!skb) { |
322d739d MC |
2849 | iscsi_cls_session_printk(KERN_ERR, session, |
2850 | "Cannot notify userspace of session " | |
2851 | "event %u\n", event); | |
53cb8a1f MC |
2852 | return -ENOMEM; |
2853 | } | |
2854 | ||
43514774 | 2855 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); |
e07ebea0 | 2856 | ev = nlmsg_data(nlh); |
26974789 | 2857 | ev->transport_handle = iscsi_handle(session->transport); |
53cb8a1f | 2858 | |
26974789 MC |
2859 | ev->type = event; |
2860 | switch (event) { | |
2861 | case ISCSI_KEVENT_DESTROY_SESSION: | |
2862 | ev->r.d_session.host_no = shost->host_no; | |
2863 | ev->r.d_session.sid = session->sid; | |
2864 | break; | |
2865 | case ISCSI_KEVENT_CREATE_SESSION: | |
2866 | ev->r.c_session_ret.host_no = shost->host_no; | |
2867 | ev->r.c_session_ret.sid = session->sid; | |
2868 | break; | |
2869 | case ISCSI_KEVENT_UNBIND_SESSION: | |
2870 | ev->r.unbind_session.host_no = shost->host_no; | |
2871 | ev->r.unbind_session.sid = session->sid; | |
2872 | break; | |
2873 | default: | |
322d739d MC |
2874 | iscsi_cls_session_printk(KERN_ERR, session, "Invalid event " |
2875 | "%u.\n", event); | |
26974789 | 2876 | kfree_skb(skb); |
53cb8a1f | 2877 | return -EINVAL; |
53cb8a1f MC |
2878 | } |
2879 | ||
53cb8a1f MC |
2880 | /* |
2881 | * this will occur if the daemon is not up, so we just warn | |
2882 | * the user and when the daemon is restarted it will handle it | |
2883 | */ | |
43514774 | 2884 | rc = iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_KERNEL); |
ff491a73 | 2885 | if (rc == -ESRCH) |
322d739d MC |
2886 | iscsi_cls_session_printk(KERN_ERR, session, |
2887 | "Cannot notify userspace of session " | |
2888 | "event %u. Check iscsi daemon\n", | |
2889 | event); | |
632248aa MC |
2890 | |
2891 | ISCSI_DBG_TRANS_SESSION(session, "Completed handling event %d rc %d\n", | |
2892 | event, rc); | |
53cb8a1f MC |
2893 | return rc; |
2894 | } | |
26974789 | 2895 | EXPORT_SYMBOL_GPL(iscsi_session_event); |
53cb8a1f | 2896 | |
0896b752 | 2897 | static int |
d82ff9be | 2898 | iscsi_if_create_session(struct iscsi_internal *priv, struct iscsi_endpoint *ep, |
0c70d84b MC |
2899 | struct iscsi_uevent *ev, pid_t pid, |
2900 | uint32_t initial_cmdsn, uint16_t cmds_max, | |
2901 | uint16_t queue_depth) | |
0896b752 AA |
2902 | { |
2903 | struct iscsi_transport *transport = priv->iscsi_transport; | |
7b7232f3 | 2904 | struct iscsi_cls_session *session; |
5e7facb7 | 2905 | struct Scsi_Host *shost; |
0896b752 | 2906 | |
d82ff9be | 2907 | session = transport->create_session(ep, cmds_max, queue_depth, |
5e7facb7 | 2908 | initial_cmdsn); |
7b7232f3 | 2909 | if (!session) |
7b8631b5 | 2910 | return -ENOMEM; |
0896b752 | 2911 | |
0c70d84b | 2912 | session->creator = pid; |
5e7facb7 MC |
2913 | shost = iscsi_session_to_shost(session); |
2914 | ev->r.c_session_ret.host_no = shost->host_no; | |
b5c7a12d | 2915 | ev->r.c_session_ret.sid = session->sid; |
632248aa MC |
2916 | ISCSI_DBG_TRANS_SESSION(session, |
2917 | "Completed creating transport session\n"); | |
0896b752 | 2918 | return 0; |
0896b752 AA |
2919 | } |
2920 | ||
2921 | static int | |
7b7232f3 | 2922 | iscsi_if_create_conn(struct iscsi_transport *transport, struct iscsi_uevent *ev) |
0896b752 | 2923 | { |
7b8631b5 | 2924 | struct iscsi_cls_conn *conn; |
7b7232f3 | 2925 | struct iscsi_cls_session *session; |
7b8631b5 | 2926 | |
b5c7a12d MC |
2927 | session = iscsi_session_lookup(ev->u.c_conn.sid); |
2928 | if (!session) { | |
322d739d | 2929 | printk(KERN_ERR "iscsi: invalid session %d.\n", |
b5c7a12d | 2930 | ev->u.c_conn.sid); |
7b8631b5 | 2931 | return -EINVAL; |
b5c7a12d | 2932 | } |
0896b752 | 2933 | |
7b7232f3 | 2934 | conn = transport->create_conn(session, ev->u.c_conn.cid); |
b5c7a12d | 2935 | if (!conn) { |
322d739d MC |
2936 | iscsi_cls_session_printk(KERN_ERR, session, |
2937 | "couldn't create a new connection."); | |
7b7232f3 | 2938 | return -ENOMEM; |
b5c7a12d | 2939 | } |
0896b752 | 2940 | |
b5c7a12d MC |
2941 | ev->r.c_conn_ret.sid = session->sid; |
2942 | ev->r.c_conn_ret.cid = conn->cid; | |
632248aa MC |
2943 | |
2944 | ISCSI_DBG_TRANS_CONN(conn, "Completed creating transport conn\n"); | |
0896b752 | 2945 | return 0; |
1da177e4 LT |
2946 | } |
2947 | ||
0896b752 AA |
2948 | static int |
2949 | iscsi_if_destroy_conn(struct iscsi_transport *transport, struct iscsi_uevent *ev) | |
2950 | { | |
7b8631b5 | 2951 | struct iscsi_cls_conn *conn; |
0896b752 | 2952 | |
b5c7a12d | 2953 | conn = iscsi_conn_lookup(ev->u.d_conn.sid, ev->u.d_conn.cid); |
0896b752 | 2954 | if (!conn) |
7b8631b5 | 2955 | return -EINVAL; |
0896b752 | 2956 | |
23d6fefb MC |
2957 | ISCSI_DBG_TRANS_CONN(conn, "Flushing cleanup during destruction\n"); |
2958 | flush_work(&conn->cleanup_work); | |
632248aa | 2959 | ISCSI_DBG_TRANS_CONN(conn, "Destroying transport conn\n"); |
7e7cd796 | 2960 | |
7b8631b5 MC |
2961 | if (transport->destroy_conn) |
2962 | transport->destroy_conn(conn); | |
7b8631b5 | 2963 | return 0; |
0896b752 AA |
2964 | } |
2965 | ||
fd7255f5 MC |
2966 | static int |
2967 | iscsi_set_param(struct iscsi_transport *transport, struct iscsi_uevent *ev) | |
2968 | { | |
2969 | char *data = (char*)ev + sizeof(*ev); | |
2970 | struct iscsi_cls_conn *conn; | |
2971 | struct iscsi_cls_session *session; | |
49c5606b | 2972 | int err = 0, value = 0, state; |
fd7255f5 | 2973 | |
ec98ea70 CL |
2974 | if (ev->u.set_param.len > PAGE_SIZE) |
2975 | return -EINVAL; | |
2976 | ||
fd7255f5 MC |
2977 | session = iscsi_session_lookup(ev->u.set_param.sid); |
2978 | conn = iscsi_conn_lookup(ev->u.set_param.sid, ev->u.set_param.cid); | |
2979 | if (!conn || !session) | |
2980 | return -EINVAL; | |
2981 | ||
2982 | switch (ev->u.set_param.param) { | |
30a6c652 | 2983 | case ISCSI_PARAM_SESS_RECOVERY_TMO: |
a54a52ca | 2984 | sscanf(data, "%d", &value); |
9c8108a4 CL |
2985 | if (!session->recovery_tmo_sysfs_override) |
2986 | session->recovery_tmo = value; | |
30a6c652 | 2987 | break; |
fd7255f5 | 2988 | default: |
49c5606b MC |
2989 | state = READ_ONCE(conn->state); |
2990 | if (state == ISCSI_CONN_BOUND || state == ISCSI_CONN_UP) { | |
9e67600e GM |
2991 | err = transport->set_param(conn, ev->u.set_param.param, |
2992 | data, ev->u.set_param.len); | |
2993 | } else { | |
2994 | return -ENOTCONN; | |
2995 | } | |
fd7255f5 MC |
2996 | } |
2997 | ||
2998 | return err; | |
2999 | } | |
3000 | ||
10eb0f01 MC |
3001 | static int iscsi_if_ep_connect(struct iscsi_transport *transport, |
3002 | struct iscsi_uevent *ev, int msg_type) | |
3003 | { | |
3004 | struct iscsi_endpoint *ep; | |
3005 | struct sockaddr *dst_addr; | |
3006 | struct Scsi_Host *shost = NULL; | |
3007 | int non_blocking, err = 0; | |
3008 | ||
3009 | if (!transport->ep_connect) | |
3010 | return -EINVAL; | |
3011 | ||
3012 | if (msg_type == ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST) { | |
3013 | shost = scsi_host_lookup(ev->u.ep_connect_through_host.host_no); | |
3014 | if (!shost) { | |
3015 | printk(KERN_ERR "ep connect failed. Could not find " | |
3016 | "host no %u\n", | |
3017 | ev->u.ep_connect_through_host.host_no); | |
3018 | return -ENODEV; | |
3019 | } | |
3020 | non_blocking = ev->u.ep_connect_through_host.non_blocking; | |
3021 | } else | |
3022 | non_blocking = ev->u.ep_connect.non_blocking; | |
3023 | ||
3024 | dst_addr = (struct sockaddr *)((char*)ev + sizeof(*ev)); | |
3025 | ep = transport->ep_connect(shost, dst_addr, non_blocking); | |
3026 | if (IS_ERR(ep)) { | |
3027 | err = PTR_ERR(ep); | |
3028 | goto release_host; | |
3029 | } | |
3030 | ||
3031 | ev->r.ep_connect_ret.handle = ep->id; | |
3032 | release_host: | |
3033 | if (shost) | |
3034 | scsi_host_put(shost); | |
3035 | return err; | |
3036 | } | |
3037 | ||
22a39fbb | 3038 | static int iscsi_if_ep_disconnect(struct iscsi_transport *transport, |
23d6fefb | 3039 | u64 ep_handle) |
22a39fbb MC |
3040 | { |
3041 | struct iscsi_cls_conn *conn; | |
3042 | struct iscsi_endpoint *ep; | |
3043 | ||
3044 | if (!transport->ep_disconnect) | |
3045 | return -EINVAL; | |
3046 | ||
3047 | ep = iscsi_lookup_endpoint(ep_handle); | |
3048 | if (!ep) | |
3049 | return -EINVAL; | |
23d6fefb | 3050 | |
22a39fbb | 3051 | conn = ep->conn; |
23d6fefb MC |
3052 | if (!conn) { |
3053 | /* | |
3054 | * conn was not even bound yet, so we can't get iscsi conn | |
3055 | * failures yet. | |
3056 | */ | |
3057 | transport->ep_disconnect(ep); | |
3058 | goto put_ep; | |
3059 | } | |
3060 | ||
3061 | mutex_lock(&conn->ep_mutex); | |
65d284a7 | 3062 | iscsi_if_disconnect_bound_ep(conn, ep, false); |
23d6fefb MC |
3063 | mutex_unlock(&conn->ep_mutex); |
3064 | put_ep: | |
9e5fe170 | 3065 | iscsi_put_endpoint(ep); |
22a39fbb MC |
3066 | return 0; |
3067 | } | |
3068 | ||
264faaaa OG |
3069 | static int |
3070 | iscsi_if_transport_ep(struct iscsi_transport *transport, | |
3071 | struct iscsi_uevent *ev, int msg_type) | |
3072 | { | |
d82ff9be | 3073 | struct iscsi_endpoint *ep; |
264faaaa OG |
3074 | int rc = 0; |
3075 | ||
3076 | switch (msg_type) { | |
10eb0f01 | 3077 | case ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST: |
264faaaa | 3078 | case ISCSI_UEVENT_TRANSPORT_EP_CONNECT: |
10eb0f01 | 3079 | rc = iscsi_if_ep_connect(transport, ev, msg_type); |
264faaaa OG |
3080 | break; |
3081 | case ISCSI_UEVENT_TRANSPORT_EP_POLL: | |
3082 | if (!transport->ep_poll) | |
3083 | return -EINVAL; | |
3084 | ||
d82ff9be MC |
3085 | ep = iscsi_lookup_endpoint(ev->u.ep_poll.ep_handle); |
3086 | if (!ep) | |
3087 | return -EINVAL; | |
3088 | ||
3089 | ev->r.retcode = transport->ep_poll(ep, | |
264faaaa | 3090 | ev->u.ep_poll.timeout_ms); |
9e5fe170 | 3091 | iscsi_put_endpoint(ep); |
264faaaa OG |
3092 | break; |
3093 | case ISCSI_UEVENT_TRANSPORT_EP_DISCONNECT: | |
22a39fbb | 3094 | rc = iscsi_if_ep_disconnect(transport, |
23d6fefb | 3095 | ev->u.ep_disconnect.ep_handle); |
264faaaa OG |
3096 | break; |
3097 | } | |
3098 | return rc; | |
3099 | } | |
3100 | ||
01cb225d MC |
3101 | static int |
3102 | iscsi_tgt_dscvr(struct iscsi_transport *transport, | |
3103 | struct iscsi_uevent *ev) | |
3104 | { | |
2174a04e | 3105 | struct Scsi_Host *shost; |
01cb225d | 3106 | struct sockaddr *dst_addr; |
2174a04e | 3107 | int err; |
01cb225d MC |
3108 | |
3109 | if (!transport->tgt_dscvr) | |
3110 | return -EINVAL; | |
3111 | ||
2174a04e | 3112 | shost = scsi_host_lookup(ev->u.tgt_dscvr.host_no); |
315cb0ad | 3113 | if (!shost) { |
2174a04e MC |
3114 | printk(KERN_ERR "target discovery could not find host no %u\n", |
3115 | ev->u.tgt_dscvr.host_no); | |
3116 | return -ENODEV; | |
3117 | } | |
3118 | ||
3119 | ||
01cb225d | 3120 | dst_addr = (struct sockaddr *)((char*)ev + sizeof(*ev)); |
2174a04e MC |
3121 | err = transport->tgt_dscvr(shost, ev->u.tgt_dscvr.type, |
3122 | ev->u.tgt_dscvr.enable, dst_addr); | |
3123 | scsi_host_put(shost); | |
3124 | return err; | |
01cb225d MC |
3125 | } |
3126 | ||
1d9bf13a MC |
3127 | static int |
3128 | iscsi_set_host_param(struct iscsi_transport *transport, | |
3129 | struct iscsi_uevent *ev) | |
3130 | { | |
3131 | char *data = (char*)ev + sizeof(*ev); | |
3132 | struct Scsi_Host *shost; | |
3133 | int err; | |
3134 | ||
3135 | if (!transport->set_host_param) | |
3136 | return -ENOSYS; | |
3137 | ||
ec98ea70 CL |
3138 | if (ev->u.set_host_param.len > PAGE_SIZE) |
3139 | return -EINVAL; | |
3140 | ||
1d9bf13a | 3141 | shost = scsi_host_lookup(ev->u.set_host_param.host_no); |
315cb0ad | 3142 | if (!shost) { |
1d9bf13a MC |
3143 | printk(KERN_ERR "set_host_param could not find host no %u\n", |
3144 | ev->u.set_host_param.host_no); | |
3145 | return -ENODEV; | |
3146 | } | |
3147 | ||
3148 | err = transport->set_host_param(shost, ev->u.set_host_param.param, | |
3149 | data, ev->u.set_host_param.len); | |
3150 | scsi_host_put(shost); | |
3151 | return err; | |
3152 | } | |
3153 | ||
0896b752 | 3154 | static int |
43514774 MC |
3155 | iscsi_set_path(struct iscsi_transport *transport, struct iscsi_uevent *ev) |
3156 | { | |
3157 | struct Scsi_Host *shost; | |
3158 | struct iscsi_path *params; | |
3159 | int err; | |
3160 | ||
3161 | if (!transport->set_path) | |
3162 | return -ENOSYS; | |
3163 | ||
3164 | shost = scsi_host_lookup(ev->u.set_path.host_no); | |
3165 | if (!shost) { | |
3166 | printk(KERN_ERR "set path could not find host no %u\n", | |
3167 | ev->u.set_path.host_no); | |
3168 | return -ENODEV; | |
3169 | } | |
3170 | ||
3171 | params = (struct iscsi_path *)((char *)ev + sizeof(*ev)); | |
3172 | err = transport->set_path(shost, params); | |
3173 | ||
3174 | scsi_host_put(shost); | |
3175 | return err; | |
3176 | } | |
3177 | ||
54155ed4 NB |
3178 | static int iscsi_session_has_conns(int sid) |
3179 | { | |
3180 | struct iscsi_cls_conn *conn; | |
3181 | unsigned long flags; | |
3182 | int found = 0; | |
3183 | ||
3184 | spin_lock_irqsave(&connlock, flags); | |
3185 | list_for_each_entry(conn, &connlist, conn_list) { | |
3186 | if (iscsi_conn_get_sid(conn) == sid) { | |
3187 | found = 1; | |
3188 | break; | |
3189 | } | |
3190 | } | |
3191 | spin_unlock_irqrestore(&connlock, flags); | |
3192 | ||
3193 | return found; | |
3194 | } | |
3195 | ||
56c155b5 MC |
3196 | static int |
3197 | iscsi_set_iface_params(struct iscsi_transport *transport, | |
00c31889 | 3198 | struct iscsi_uevent *ev, uint32_t len) |
56c155b5 MC |
3199 | { |
3200 | char *data = (char *)ev + sizeof(*ev); | |
3201 | struct Scsi_Host *shost; | |
3202 | int err; | |
3203 | ||
3204 | if (!transport->set_iface_param) | |
3205 | return -ENOSYS; | |
3206 | ||
3207 | shost = scsi_host_lookup(ev->u.set_iface_params.host_no); | |
3208 | if (!shost) { | |
3209 | printk(KERN_ERR "set_iface_params could not find host no %u\n", | |
3210 | ev->u.set_iface_params.host_no); | |
3211 | return -ENODEV; | |
3212 | } | |
3213 | ||
00c31889 | 3214 | err = transport->set_iface_param(shost, data, len); |
56c155b5 MC |
3215 | scsi_host_put(shost); |
3216 | return err; | |
3217 | } | |
3218 | ||
ac20c7bf VC |
3219 | static int |
3220 | iscsi_send_ping(struct iscsi_transport *transport, struct iscsi_uevent *ev) | |
3221 | { | |
3222 | struct Scsi_Host *shost; | |
3223 | struct sockaddr *dst_addr; | |
3224 | int err; | |
3225 | ||
3226 | if (!transport->send_ping) | |
3227 | return -ENOSYS; | |
3228 | ||
3229 | shost = scsi_host_lookup(ev->u.iscsi_ping.host_no); | |
3230 | if (!shost) { | |
3231 | printk(KERN_ERR "iscsi_ping could not find host no %u\n", | |
3232 | ev->u.iscsi_ping.host_no); | |
3233 | return -ENODEV; | |
3234 | } | |
3235 | ||
3236 | dst_addr = (struct sockaddr *)((char *)ev + sizeof(*ev)); | |
3237 | err = transport->send_ping(shost, ev->u.iscsi_ping.iface_num, | |
3238 | ev->u.iscsi_ping.iface_type, | |
3239 | ev->u.iscsi_ping.payload_size, | |
3240 | ev->u.iscsi_ping.pid, | |
3241 | dst_addr); | |
3242 | scsi_host_put(shost); | |
3243 | return err; | |
3244 | } | |
3245 | ||
6260a5d2 NJ |
3246 | static int |
3247 | iscsi_get_chap(struct iscsi_transport *transport, struct nlmsghdr *nlh) | |
3248 | { | |
e07ebea0 | 3249 | struct iscsi_uevent *ev = nlmsg_data(nlh); |
6260a5d2 NJ |
3250 | struct Scsi_Host *shost = NULL; |
3251 | struct iscsi_chap_rec *chap_rec; | |
3252 | struct iscsi_internal *priv; | |
3253 | struct sk_buff *skbchap; | |
3254 | struct nlmsghdr *nlhchap; | |
3255 | struct iscsi_uevent *evchap; | |
3256 | uint32_t chap_buf_size; | |
3257 | int len, err = 0; | |
3258 | char *buf; | |
3259 | ||
3260 | if (!transport->get_chap) | |
3261 | return -EINVAL; | |
3262 | ||
3263 | priv = iscsi_if_transport_lookup(transport); | |
3264 | if (!priv) | |
3265 | return -EINVAL; | |
3266 | ||
3267 | chap_buf_size = (ev->u.get_chap.num_entries * sizeof(*chap_rec)); | |
e07ebea0 | 3268 | len = nlmsg_total_size(sizeof(*ev) + chap_buf_size); |
6260a5d2 NJ |
3269 | |
3270 | shost = scsi_host_lookup(ev->u.get_chap.host_no); | |
3271 | if (!shost) { | |
804ff603 | 3272 | printk(KERN_ERR "%s: failed. Could not find host no %u\n", |
6260a5d2 NJ |
3273 | __func__, ev->u.get_chap.host_no); |
3274 | return -ENODEV; | |
3275 | } | |
3276 | ||
3277 | do { | |
3278 | int actual_size; | |
3279 | ||
3280 | skbchap = alloc_skb(len, GFP_KERNEL); | |
3281 | if (!skbchap) { | |
3282 | printk(KERN_ERR "can not deliver chap: OOM\n"); | |
3283 | err = -ENOMEM; | |
3284 | goto exit_get_chap; | |
3285 | } | |
3286 | ||
3287 | nlhchap = __nlmsg_put(skbchap, 0, 0, 0, | |
3288 | (len - sizeof(*nlhchap)), 0); | |
e07ebea0 | 3289 | evchap = nlmsg_data(nlhchap); |
6260a5d2 NJ |
3290 | memset(evchap, 0, sizeof(*evchap)); |
3291 | evchap->transport_handle = iscsi_handle(transport); | |
3292 | evchap->type = nlh->nlmsg_type; | |
3293 | evchap->u.get_chap.host_no = ev->u.get_chap.host_no; | |
3294 | evchap->u.get_chap.chap_tbl_idx = ev->u.get_chap.chap_tbl_idx; | |
3295 | evchap->u.get_chap.num_entries = ev->u.get_chap.num_entries; | |
a799cb77 | 3296 | buf = (char *)evchap + sizeof(*evchap); |
6260a5d2 NJ |
3297 | memset(buf, 0, chap_buf_size); |
3298 | ||
3299 | err = transport->get_chap(shost, ev->u.get_chap.chap_tbl_idx, | |
3300 | &evchap->u.get_chap.num_entries, buf); | |
3301 | ||
e07ebea0 | 3302 | actual_size = nlmsg_total_size(sizeof(*ev) + chap_buf_size); |
6260a5d2 NJ |
3303 | skb_trim(skbchap, NLMSG_ALIGN(actual_size)); |
3304 | nlhchap->nlmsg_len = actual_size; | |
3305 | ||
3306 | err = iscsi_multicast_skb(skbchap, ISCSI_NL_GRP_ISCSID, | |
3307 | GFP_KERNEL); | |
3308 | } while (err < 0 && err != -ECONNREFUSED); | |
3309 | ||
3310 | exit_get_chap: | |
3311 | scsi_host_put(shost); | |
3312 | return err; | |
3313 | } | |
3314 | ||
3af142fe AC |
3315 | static int iscsi_set_chap(struct iscsi_transport *transport, |
3316 | struct iscsi_uevent *ev, uint32_t len) | |
3317 | { | |
3318 | char *data = (char *)ev + sizeof(*ev); | |
3319 | struct Scsi_Host *shost; | |
3320 | int err = 0; | |
3321 | ||
3322 | if (!transport->set_chap) | |
3323 | return -ENOSYS; | |
3324 | ||
3325 | shost = scsi_host_lookup(ev->u.set_path.host_no); | |
3326 | if (!shost) { | |
3327 | pr_err("%s could not find host no %u\n", | |
3328 | __func__, ev->u.set_path.host_no); | |
3329 | return -ENODEV; | |
3330 | } | |
3331 | ||
3332 | err = transport->set_chap(shost, data, len); | |
3333 | scsi_host_put(shost); | |
3334 | return err; | |
3335 | } | |
3336 | ||
6260a5d2 NJ |
3337 | static int iscsi_delete_chap(struct iscsi_transport *transport, |
3338 | struct iscsi_uevent *ev) | |
3339 | { | |
3340 | struct Scsi_Host *shost; | |
3341 | int err = 0; | |
3342 | ||
3343 | if (!transport->delete_chap) | |
3344 | return -ENOSYS; | |
3345 | ||
3346 | shost = scsi_host_lookup(ev->u.delete_chap.host_no); | |
3347 | if (!shost) { | |
3348 | printk(KERN_ERR "%s could not find host no %u\n", | |
3349 | __func__, ev->u.delete_chap.host_no); | |
3350 | return -ENODEV; | |
3351 | } | |
3352 | ||
3353 | err = transport->delete_chap(shost, ev->u.delete_chap.chap_tbl_idx); | |
3354 | scsi_host_put(shost); | |
3355 | return err; | |
3356 | } | |
3357 | ||
c6a4bb2e AC |
3358 | static const struct { |
3359 | enum iscsi_discovery_parent_type value; | |
3360 | char *name; | |
3361 | } iscsi_discovery_parent_names[] = { | |
3362 | {ISCSI_DISC_PARENT_UNKNOWN, "Unknown" }, | |
3363 | {ISCSI_DISC_PARENT_SENDTGT, "Sendtarget" }, | |
3364 | {ISCSI_DISC_PARENT_ISNS, "isns" }, | |
3365 | }; | |
3366 | ||
3367 | char *iscsi_get_discovery_parent_name(int parent_type) | |
3368 | { | |
3369 | int i; | |
3370 | char *state = "Unknown!"; | |
3371 | ||
3372 | for (i = 0; i < ARRAY_SIZE(iscsi_discovery_parent_names); i++) { | |
3373 | if (iscsi_discovery_parent_names[i].value & parent_type) { | |
3374 | state = iscsi_discovery_parent_names[i].name; | |
3375 | break; | |
3376 | } | |
3377 | } | |
3378 | return state; | |
3379 | } | |
3380 | EXPORT_SYMBOL_GPL(iscsi_get_discovery_parent_name); | |
3381 | ||
3382 | static int iscsi_set_flashnode_param(struct iscsi_transport *transport, | |
3383 | struct iscsi_uevent *ev, uint32_t len) | |
3384 | { | |
3385 | char *data = (char *)ev + sizeof(*ev); | |
3386 | struct Scsi_Host *shost; | |
3387 | struct iscsi_bus_flash_session *fnode_sess; | |
3388 | struct iscsi_bus_flash_conn *fnode_conn; | |
3389 | struct device *dev; | |
8526cb11 | 3390 | uint32_t idx; |
c6a4bb2e AC |
3391 | int err = 0; |
3392 | ||
3393 | if (!transport->set_flashnode_param) { | |
3394 | err = -ENOSYS; | |
3395 | goto exit_set_fnode; | |
3396 | } | |
3397 | ||
3398 | shost = scsi_host_lookup(ev->u.set_flashnode.host_no); | |
3399 | if (!shost) { | |
3400 | pr_err("%s could not find host no %u\n", | |
3401 | __func__, ev->u.set_flashnode.host_no); | |
3402 | err = -ENODEV; | |
68e12e5f | 3403 | goto exit_set_fnode; |
c6a4bb2e AC |
3404 | } |
3405 | ||
8526cb11 MC |
3406 | idx = ev->u.set_flashnode.flashnode_idx; |
3407 | fnode_sess = iscsi_get_flashnode_by_index(shost, idx); | |
c6a4bb2e AC |
3408 | if (!fnode_sess) { |
3409 | pr_err("%s could not find flashnode %u for host no %u\n", | |
8526cb11 | 3410 | __func__, idx, ev->u.set_flashnode.host_no); |
c6a4bb2e AC |
3411 | err = -ENODEV; |
3412 | goto put_host; | |
3413 | } | |
3414 | ||
8526cb11 | 3415 | dev = iscsi_find_flashnode_conn(fnode_sess); |
c6a4bb2e AC |
3416 | if (!dev) { |
3417 | err = -ENODEV; | |
8526cb11 | 3418 | goto put_sess; |
c6a4bb2e AC |
3419 | } |
3420 | ||
3421 | fnode_conn = iscsi_dev_to_flash_conn(dev); | |
3422 | err = transport->set_flashnode_param(fnode_sess, fnode_conn, data, len); | |
8526cb11 MC |
3423 | put_device(dev); |
3424 | ||
3425 | put_sess: | |
3426 | put_device(&fnode_sess->dev); | |
c6a4bb2e AC |
3427 | |
3428 | put_host: | |
3429 | scsi_host_put(shost); | |
3430 | ||
3431 | exit_set_fnode: | |
3432 | return err; | |
3433 | } | |
3434 | ||
3435 | static int iscsi_new_flashnode(struct iscsi_transport *transport, | |
3436 | struct iscsi_uevent *ev, uint32_t len) | |
3437 | { | |
3438 | char *data = (char *)ev + sizeof(*ev); | |
3439 | struct Scsi_Host *shost; | |
3440 | int index; | |
3441 | int err = 0; | |
3442 | ||
3443 | if (!transport->new_flashnode) { | |
3444 | err = -ENOSYS; | |
3445 | goto exit_new_fnode; | |
3446 | } | |
3447 | ||
3448 | shost = scsi_host_lookup(ev->u.new_flashnode.host_no); | |
3449 | if (!shost) { | |
3450 | pr_err("%s could not find host no %u\n", | |
3451 | __func__, ev->u.new_flashnode.host_no); | |
3452 | err = -ENODEV; | |
3453 | goto put_host; | |
3454 | } | |
3455 | ||
3456 | index = transport->new_flashnode(shost, data, len); | |
3457 | ||
3458 | if (index >= 0) | |
3459 | ev->r.new_flashnode_ret.flashnode_idx = index; | |
3460 | else | |
3461 | err = -EIO; | |
3462 | ||
3463 | put_host: | |
3464 | scsi_host_put(shost); | |
3465 | ||
3466 | exit_new_fnode: | |
3467 | return err; | |
3468 | } | |
3469 | ||
3470 | static int iscsi_del_flashnode(struct iscsi_transport *transport, | |
3471 | struct iscsi_uevent *ev) | |
3472 | { | |
3473 | struct Scsi_Host *shost; | |
3474 | struct iscsi_bus_flash_session *fnode_sess; | |
8526cb11 | 3475 | uint32_t idx; |
c6a4bb2e AC |
3476 | int err = 0; |
3477 | ||
3478 | if (!transport->del_flashnode) { | |
3479 | err = -ENOSYS; | |
3480 | goto exit_del_fnode; | |
3481 | } | |
3482 | ||
3483 | shost = scsi_host_lookup(ev->u.del_flashnode.host_no); | |
3484 | if (!shost) { | |
3485 | pr_err("%s could not find host no %u\n", | |
3486 | __func__, ev->u.del_flashnode.host_no); | |
3487 | err = -ENODEV; | |
3488 | goto put_host; | |
3489 | } | |
3490 | ||
8526cb11 MC |
3491 | idx = ev->u.del_flashnode.flashnode_idx; |
3492 | fnode_sess = iscsi_get_flashnode_by_index(shost, idx); | |
c6a4bb2e AC |
3493 | if (!fnode_sess) { |
3494 | pr_err("%s could not find flashnode %u for host no %u\n", | |
8526cb11 | 3495 | __func__, idx, ev->u.del_flashnode.host_no); |
c6a4bb2e AC |
3496 | err = -ENODEV; |
3497 | goto put_host; | |
3498 | } | |
3499 | ||
3500 | err = transport->del_flashnode(fnode_sess); | |
8526cb11 | 3501 | put_device(&fnode_sess->dev); |
c6a4bb2e AC |
3502 | |
3503 | put_host: | |
3504 | scsi_host_put(shost); | |
3505 | ||
3506 | exit_del_fnode: | |
3507 | return err; | |
3508 | } | |
3509 | ||
3510 | static int iscsi_login_flashnode(struct iscsi_transport *transport, | |
3511 | struct iscsi_uevent *ev) | |
3512 | { | |
3513 | struct Scsi_Host *shost; | |
3514 | struct iscsi_bus_flash_session *fnode_sess; | |
3515 | struct iscsi_bus_flash_conn *fnode_conn; | |
3516 | struct device *dev; | |
8526cb11 | 3517 | uint32_t idx; |
c6a4bb2e AC |
3518 | int err = 0; |
3519 | ||
3520 | if (!transport->login_flashnode) { | |
3521 | err = -ENOSYS; | |
3522 | goto exit_login_fnode; | |
3523 | } | |
3524 | ||
3525 | shost = scsi_host_lookup(ev->u.login_flashnode.host_no); | |
3526 | if (!shost) { | |
3527 | pr_err("%s could not find host no %u\n", | |
3528 | __func__, ev->u.login_flashnode.host_no); | |
3529 | err = -ENODEV; | |
3530 | goto put_host; | |
3531 | } | |
3532 | ||
8526cb11 MC |
3533 | idx = ev->u.login_flashnode.flashnode_idx; |
3534 | fnode_sess = iscsi_get_flashnode_by_index(shost, idx); | |
c6a4bb2e AC |
3535 | if (!fnode_sess) { |
3536 | pr_err("%s could not find flashnode %u for host no %u\n", | |
8526cb11 | 3537 | __func__, idx, ev->u.login_flashnode.host_no); |
c6a4bb2e AC |
3538 | err = -ENODEV; |
3539 | goto put_host; | |
3540 | } | |
3541 | ||
8526cb11 | 3542 | dev = iscsi_find_flashnode_conn(fnode_sess); |
c6a4bb2e AC |
3543 | if (!dev) { |
3544 | err = -ENODEV; | |
8526cb11 | 3545 | goto put_sess; |
c6a4bb2e AC |
3546 | } |
3547 | ||
3548 | fnode_conn = iscsi_dev_to_flash_conn(dev); | |
3549 | err = transport->login_flashnode(fnode_sess, fnode_conn); | |
8526cb11 MC |
3550 | put_device(dev); |
3551 | ||
3552 | put_sess: | |
3553 | put_device(&fnode_sess->dev); | |
c6a4bb2e AC |
3554 | |
3555 | put_host: | |
3556 | scsi_host_put(shost); | |
3557 | ||
3558 | exit_login_fnode: | |
3559 | return err; | |
3560 | } | |
3561 | ||
3562 | static int iscsi_logout_flashnode(struct iscsi_transport *transport, | |
3563 | struct iscsi_uevent *ev) | |
3564 | { | |
3565 | struct Scsi_Host *shost; | |
3566 | struct iscsi_bus_flash_session *fnode_sess; | |
3567 | struct iscsi_bus_flash_conn *fnode_conn; | |
3568 | struct device *dev; | |
8526cb11 | 3569 | uint32_t idx; |
c6a4bb2e AC |
3570 | int err = 0; |
3571 | ||
3572 | if (!transport->logout_flashnode) { | |
3573 | err = -ENOSYS; | |
3574 | goto exit_logout_fnode; | |
3575 | } | |
3576 | ||
3577 | shost = scsi_host_lookup(ev->u.logout_flashnode.host_no); | |
3578 | if (!shost) { | |
3579 | pr_err("%s could not find host no %u\n", | |
3580 | __func__, ev->u.logout_flashnode.host_no); | |
3581 | err = -ENODEV; | |
3582 | goto put_host; | |
3583 | } | |
3584 | ||
8526cb11 MC |
3585 | idx = ev->u.logout_flashnode.flashnode_idx; |
3586 | fnode_sess = iscsi_get_flashnode_by_index(shost, idx); | |
c6a4bb2e AC |
3587 | if (!fnode_sess) { |
3588 | pr_err("%s could not find flashnode %u for host no %u\n", | |
8526cb11 | 3589 | __func__, idx, ev->u.logout_flashnode.host_no); |
c6a4bb2e AC |
3590 | err = -ENODEV; |
3591 | goto put_host; | |
3592 | } | |
3593 | ||
8526cb11 | 3594 | dev = iscsi_find_flashnode_conn(fnode_sess); |
c6a4bb2e AC |
3595 | if (!dev) { |
3596 | err = -ENODEV; | |
8526cb11 | 3597 | goto put_sess; |
c6a4bb2e AC |
3598 | } |
3599 | ||
3600 | fnode_conn = iscsi_dev_to_flash_conn(dev); | |
3601 | ||
3602 | err = transport->logout_flashnode(fnode_sess, fnode_conn); | |
8526cb11 MC |
3603 | put_device(dev); |
3604 | ||
3605 | put_sess: | |
3606 | put_device(&fnode_sess->dev); | |
c6a4bb2e AC |
3607 | |
3608 | put_host: | |
3609 | scsi_host_put(shost); | |
3610 | ||
3611 | exit_logout_fnode: | |
3612 | return err; | |
3613 | } | |
3614 | ||
3615 | static int iscsi_logout_flashnode_sid(struct iscsi_transport *transport, | |
3616 | struct iscsi_uevent *ev) | |
3617 | { | |
3618 | struct Scsi_Host *shost; | |
3619 | struct iscsi_cls_session *session; | |
3620 | int err = 0; | |
3621 | ||
3622 | if (!transport->logout_flashnode_sid) { | |
3623 | err = -ENOSYS; | |
3624 | goto exit_logout_sid; | |
3625 | } | |
3626 | ||
3627 | shost = scsi_host_lookup(ev->u.logout_flashnode_sid.host_no); | |
3628 | if (!shost) { | |
3629 | pr_err("%s could not find host no %u\n", | |
3630 | __func__, ev->u.logout_flashnode.host_no); | |
3631 | err = -ENODEV; | |
3632 | goto put_host; | |
3633 | } | |
3634 | ||
3635 | session = iscsi_session_lookup(ev->u.logout_flashnode_sid.sid); | |
3636 | if (!session) { | |
3637 | pr_err("%s could not find session id %u\n", | |
3638 | __func__, ev->u.logout_flashnode_sid.sid); | |
3639 | err = -EINVAL; | |
3640 | goto put_host; | |
3641 | } | |
3642 | ||
3643 | err = transport->logout_flashnode_sid(session); | |
3644 | ||
3645 | put_host: | |
3646 | scsi_host_put(shost); | |
3647 | ||
3648 | exit_logout_sid: | |
3649 | return err; | |
3650 | } | |
3651 | ||
6fa7c554 LC |
3652 | static int |
3653 | iscsi_get_host_stats(struct iscsi_transport *transport, struct nlmsghdr *nlh) | |
3654 | { | |
3655 | struct iscsi_uevent *ev = nlmsg_data(nlh); | |
3656 | struct Scsi_Host *shost = NULL; | |
3657 | struct iscsi_internal *priv; | |
3658 | struct sk_buff *skbhost_stats; | |
3659 | struct nlmsghdr *nlhhost_stats; | |
3660 | struct iscsi_uevent *evhost_stats; | |
3661 | int host_stats_size = 0; | |
3662 | int len, err = 0; | |
3663 | char *buf; | |
3664 | ||
3665 | if (!transport->get_host_stats) | |
719e5874 | 3666 | return -ENOSYS; |
6fa7c554 LC |
3667 | |
3668 | priv = iscsi_if_transport_lookup(transport); | |
3669 | if (!priv) | |
3670 | return -EINVAL; | |
3671 | ||
3672 | host_stats_size = sizeof(struct iscsi_offload_host_stats); | |
3673 | len = nlmsg_total_size(sizeof(*ev) + host_stats_size); | |
3674 | ||
3675 | shost = scsi_host_lookup(ev->u.get_host_stats.host_no); | |
3676 | if (!shost) { | |
013ee633 | 3677 | pr_err("%s: failed. Could not find host no %u\n", |
6fa7c554 LC |
3678 | __func__, ev->u.get_host_stats.host_no); |
3679 | return -ENODEV; | |
3680 | } | |
3681 | ||
3682 | do { | |
3683 | int actual_size; | |
3684 | ||
3685 | skbhost_stats = alloc_skb(len, GFP_KERNEL); | |
3686 | if (!skbhost_stats) { | |
3687 | pr_err("cannot deliver host stats: OOM\n"); | |
3688 | err = -ENOMEM; | |
3689 | goto exit_host_stats; | |
3690 | } | |
3691 | ||
3692 | nlhhost_stats = __nlmsg_put(skbhost_stats, 0, 0, 0, | |
3693 | (len - sizeof(*nlhhost_stats)), 0); | |
3694 | evhost_stats = nlmsg_data(nlhhost_stats); | |
3695 | memset(evhost_stats, 0, sizeof(*evhost_stats)); | |
3696 | evhost_stats->transport_handle = iscsi_handle(transport); | |
3697 | evhost_stats->type = nlh->nlmsg_type; | |
3698 | evhost_stats->u.get_host_stats.host_no = | |
3699 | ev->u.get_host_stats.host_no; | |
a799cb77 | 3700 | buf = (char *)evhost_stats + sizeof(*evhost_stats); |
6fa7c554 LC |
3701 | memset(buf, 0, host_stats_size); |
3702 | ||
3703 | err = transport->get_host_stats(shost, buf, host_stats_size); | |
2f7608fc | 3704 | if (err) { |
bfb50879 | 3705 | kfree_skb(skbhost_stats); |
2f7608fc MC |
3706 | goto exit_host_stats; |
3707 | } | |
6fa7c554 LC |
3708 | |
3709 | actual_size = nlmsg_total_size(sizeof(*ev) + host_stats_size); | |
3710 | skb_trim(skbhost_stats, NLMSG_ALIGN(actual_size)); | |
3711 | nlhhost_stats->nlmsg_len = actual_size; | |
3712 | ||
3713 | err = iscsi_multicast_skb(skbhost_stats, ISCSI_NL_GRP_ISCSID, | |
3714 | GFP_KERNEL); | |
3715 | } while (err < 0 && err != -ECONNREFUSED); | |
3716 | ||
3717 | exit_host_stats: | |
3718 | scsi_host_put(shost); | |
3719 | return err; | |
3720 | } | |
3721 | ||
23d6fefb MC |
3722 | static int iscsi_if_transport_conn(struct iscsi_transport *transport, |
3723 | struct nlmsghdr *nlh) | |
3724 | { | |
3725 | struct iscsi_uevent *ev = nlmsg_data(nlh); | |
3726 | struct iscsi_cls_session *session; | |
3727 | struct iscsi_cls_conn *conn = NULL; | |
3728 | struct iscsi_endpoint *ep; | |
3729 | uint32_t pdu_len; | |
3730 | int err = 0; | |
3731 | ||
3732 | switch (nlh->nlmsg_type) { | |
3733 | case ISCSI_UEVENT_CREATE_CONN: | |
3734 | return iscsi_if_create_conn(transport, ev); | |
3735 | case ISCSI_UEVENT_DESTROY_CONN: | |
3736 | return iscsi_if_destroy_conn(transport, ev); | |
3737 | case ISCSI_UEVENT_STOP_CONN: | |
3738 | return iscsi_if_stop_conn(transport, ev); | |
3739 | } | |
3740 | ||
3741 | /* | |
3742 | * The following cmds need to be run under the ep_mutex so in kernel | |
3743 | * conn cleanup (ep_disconnect + unbind and conn) is not done while | |
3744 | * these are running. They also must not run if we have just run a conn | |
3745 | * cleanup because they would set the state in a way that might allow | |
3746 | * IO or send IO themselves. | |
3747 | */ | |
3748 | switch (nlh->nlmsg_type) { | |
3749 | case ISCSI_UEVENT_START_CONN: | |
3750 | conn = iscsi_conn_lookup(ev->u.start_conn.sid, | |
3751 | ev->u.start_conn.cid); | |
3752 | break; | |
3753 | case ISCSI_UEVENT_BIND_CONN: | |
3754 | conn = iscsi_conn_lookup(ev->u.b_conn.sid, ev->u.b_conn.cid); | |
3755 | break; | |
3756 | case ISCSI_UEVENT_SEND_PDU: | |
3757 | conn = iscsi_conn_lookup(ev->u.send_pdu.sid, ev->u.send_pdu.cid); | |
3758 | break; | |
3759 | } | |
3760 | ||
3761 | if (!conn) | |
3762 | return -EINVAL; | |
3763 | ||
3764 | mutex_lock(&conn->ep_mutex); | |
a6f78341 | 3765 | spin_lock_irq(&conn->lock); |
23d6fefb | 3766 | if (test_bit(ISCSI_CLS_CONN_BIT_CLEANUP, &conn->flags)) { |
a6f78341 | 3767 | spin_unlock_irq(&conn->lock); |
23d6fefb MC |
3768 | mutex_unlock(&conn->ep_mutex); |
3769 | ev->r.retcode = -ENOTCONN; | |
3770 | return 0; | |
3771 | } | |
a6f78341 | 3772 | spin_unlock_irq(&conn->lock); |
23d6fefb MC |
3773 | |
3774 | switch (nlh->nlmsg_type) { | |
3775 | case ISCSI_UEVENT_BIND_CONN: | |
23d6fefb MC |
3776 | session = iscsi_session_lookup(ev->u.b_conn.sid); |
3777 | if (!session) { | |
3778 | err = -EINVAL; | |
3779 | break; | |
3780 | } | |
3781 | ||
3782 | ev->r.retcode = transport->bind_conn(session, conn, | |
3783 | ev->u.b_conn.transport_eph, | |
3784 | ev->u.b_conn.is_leading); | |
3785 | if (!ev->r.retcode) | |
49c5606b | 3786 | WRITE_ONCE(conn->state, ISCSI_CONN_BOUND); |
23d6fefb MC |
3787 | |
3788 | if (ev->r.retcode || !transport->ep_connect) | |
3789 | break; | |
3790 | ||
3791 | ep = iscsi_lookup_endpoint(ev->u.b_conn.transport_eph); | |
3792 | if (ep) { | |
3793 | ep->conn = conn; | |
3794 | conn->ep = ep; | |
3795 | iscsi_put_endpoint(ep); | |
3796 | } else { | |
3797 | err = -ENOTCONN; | |
3798 | iscsi_cls_conn_printk(KERN_ERR, conn, | |
3799 | "Could not set ep conn binding\n"); | |
3800 | } | |
3801 | break; | |
3802 | case ISCSI_UEVENT_START_CONN: | |
3803 | ev->r.retcode = transport->start_conn(conn); | |
3804 | if (!ev->r.retcode) | |
49c5606b MC |
3805 | WRITE_ONCE(conn->state, ISCSI_CONN_UP); |
3806 | ||
23d6fefb MC |
3807 | break; |
3808 | case ISCSI_UEVENT_SEND_PDU: | |
3809 | pdu_len = nlh->nlmsg_len - sizeof(*nlh) - sizeof(*ev); | |
3810 | ||
3811 | if ((ev->u.send_pdu.hdr_size > pdu_len) || | |
3812 | (ev->u.send_pdu.data_size > (pdu_len - ev->u.send_pdu.hdr_size))) { | |
3813 | err = -EINVAL; | |
3814 | break; | |
3815 | } | |
3816 | ||
3817 | ev->r.retcode = transport->send_pdu(conn, | |
3818 | (struct iscsi_hdr *)((char *)ev + sizeof(*ev)), | |
3819 | (char *)ev + sizeof(*ev) + ev->u.send_pdu.hdr_size, | |
3820 | ev->u.send_pdu.data_size); | |
3821 | break; | |
3822 | default: | |
3823 | err = -ENOSYS; | |
3824 | } | |
3825 | ||
3826 | mutex_unlock(&conn->ep_mutex); | |
3827 | return err; | |
3828 | } | |
6fa7c554 | 3829 | |
43514774 MC |
3830 | static int |
3831 | iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group) | |
0896b752 AA |
3832 | { |
3833 | int err = 0; | |
af170928 | 3834 | u32 portid; |
e07ebea0 | 3835 | struct iscsi_uevent *ev = nlmsg_data(nlh); |
0896b752 AA |
3836 | struct iscsi_transport *transport = NULL; |
3837 | struct iscsi_internal *priv; | |
7b7232f3 | 3838 | struct iscsi_cls_session *session; |
d82ff9be | 3839 | struct iscsi_endpoint *ep = NULL; |
0896b752 | 3840 | |
688e8128 LD |
3841 | if (!netlink_capable(skb, CAP_SYS_ADMIN)) |
3842 | return -EPERM; | |
3843 | ||
43514774 MC |
3844 | if (nlh->nlmsg_type == ISCSI_UEVENT_PATH_UPDATE) |
3845 | *group = ISCSI_NL_GRP_UIP; | |
3846 | else | |
3847 | *group = ISCSI_NL_GRP_ISCSID; | |
3848 | ||
0896b752 AA |
3849 | priv = iscsi_if_transport_lookup(iscsi_ptr(ev->transport_handle)); |
3850 | if (!priv) | |
3851 | return -EINVAL; | |
3852 | transport = priv->iscsi_transport; | |
3853 | ||
7b7232f3 MC |
3854 | if (!try_module_get(transport->owner)) |
3855 | return -EINVAL; | |
3856 | ||
af170928 CL |
3857 | portid = NETLINK_CB(skb).portid; |
3858 | ||
0896b752 AA |
3859 | switch (nlh->nlmsg_type) { |
3860 | case ISCSI_UEVENT_CREATE_SESSION: | |
d82ff9be | 3861 | err = iscsi_if_create_session(priv, ep, ev, |
af170928 | 3862 | portid, |
40753caa MC |
3863 | ev->u.c_session.initial_cmdsn, |
3864 | ev->u.c_session.cmds_max, | |
3865 | ev->u.c_session.queue_depth); | |
3866 | break; | |
3867 | case ISCSI_UEVENT_CREATE_BOUND_SESSION: | |
d82ff9be | 3868 | ep = iscsi_lookup_endpoint(ev->u.c_bound_session.ep_handle); |
c95fddc7 MC |
3869 | if (!ep) { |
3870 | err = -EINVAL; | |
3871 | break; | |
3872 | } | |
d82ff9be MC |
3873 | |
3874 | err = iscsi_if_create_session(priv, ep, ev, | |
af170928 | 3875 | portid, |
40753caa MC |
3876 | ev->u.c_bound_session.initial_cmdsn, |
3877 | ev->u.c_bound_session.cmds_max, | |
3878 | ev->u.c_bound_session.queue_depth); | |
9e5fe170 | 3879 | iscsi_put_endpoint(ep); |
0896b752 AA |
3880 | break; |
3881 | case ISCSI_UEVENT_DESTROY_SESSION: | |
b5c7a12d | 3882 | session = iscsi_session_lookup(ev->u.d_session.sid); |
54155ed4 | 3883 | if (!session) |
26974789 | 3884 | err = -EINVAL; |
54155ed4 NB |
3885 | else if (iscsi_session_has_conns(ev->u.d_session.sid)) |
3886 | err = -EBUSY; | |
3887 | else | |
3888 | transport->destroy_session(session); | |
26974789 | 3889 | break; |
cc6b32ee FM |
3890 | case ISCSI_UEVENT_DESTROY_SESSION_ASYNC: |
3891 | session = iscsi_session_lookup(ev->u.d_session.sid); | |
3892 | if (!session) | |
3893 | err = -EINVAL; | |
3894 | else if (iscsi_session_has_conns(ev->u.d_session.sid)) | |
3895 | err = -EBUSY; | |
3896 | else { | |
3897 | unsigned long flags; | |
3898 | ||
3899 | /* Prevent this session from being found again */ | |
3900 | spin_lock_irqsave(&sesslock, flags); | |
93bf02e5 | 3901 | list_del_init(&session->sess_list); |
cc6b32ee FM |
3902 | spin_unlock_irqrestore(&sesslock, flags); |
3903 | ||
b25b957d | 3904 | queue_work(system_unbound_wq, &session->destroy_work); |
cc6b32ee FM |
3905 | } |
3906 | break; | |
26974789 MC |
3907 | case ISCSI_UEVENT_UNBIND_SESSION: |
3908 | session = iscsi_session_lookup(ev->u.d_session.sid); | |
3909 | if (session) | |
06d25af4 MC |
3910 | scsi_queue_work(iscsi_session_to_shost(session), |
3911 | &session->unbind_work); | |
26974789 | 3912 | else |
7b7232f3 | 3913 | err = -EINVAL; |
0896b752 | 3914 | break; |
0896b752 | 3915 | case ISCSI_UEVENT_SET_PARAM: |
fd7255f5 | 3916 | err = iscsi_set_param(transport, ev); |
0896b752 | 3917 | break; |
23d6fefb MC |
3918 | case ISCSI_UEVENT_CREATE_CONN: |
3919 | case ISCSI_UEVENT_DESTROY_CONN: | |
0896b752 | 3920 | case ISCSI_UEVENT_STOP_CONN: |
23d6fefb MC |
3921 | case ISCSI_UEVENT_START_CONN: |
3922 | case ISCSI_UEVENT_BIND_CONN: | |
0896b752 | 3923 | case ISCSI_UEVENT_SEND_PDU: |
23d6fefb | 3924 | err = iscsi_if_transport_conn(transport, nlh); |
0896b752 AA |
3925 | break; |
3926 | case ISCSI_UEVENT_GET_STATS: | |
5b940adf | 3927 | err = iscsi_if_get_stats(transport, nlh); |
0896b752 | 3928 | break; |
264faaaa OG |
3929 | case ISCSI_UEVENT_TRANSPORT_EP_CONNECT: |
3930 | case ISCSI_UEVENT_TRANSPORT_EP_POLL: | |
3931 | case ISCSI_UEVENT_TRANSPORT_EP_DISCONNECT: | |
10eb0f01 | 3932 | case ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST: |
264faaaa OG |
3933 | err = iscsi_if_transport_ep(transport, ev, nlh->nlmsg_type); |
3934 | break; | |
01cb225d MC |
3935 | case ISCSI_UEVENT_TGT_DSCVR: |
3936 | err = iscsi_tgt_dscvr(transport, ev); | |
3937 | break; | |
1d9bf13a MC |
3938 | case ISCSI_UEVENT_SET_HOST_PARAM: |
3939 | err = iscsi_set_host_param(transport, ev); | |
3940 | break; | |
43514774 MC |
3941 | case ISCSI_UEVENT_PATH_UPDATE: |
3942 | err = iscsi_set_path(transport, ev); | |
3943 | break; | |
56c155b5 | 3944 | case ISCSI_UEVENT_SET_IFACE_PARAMS: |
00c31889 MC |
3945 | err = iscsi_set_iface_params(transport, ev, |
3946 | nlmsg_attrlen(nlh, sizeof(*ev))); | |
56c155b5 | 3947 | break; |
ac20c7bf VC |
3948 | case ISCSI_UEVENT_PING: |
3949 | err = iscsi_send_ping(transport, ev); | |
3950 | break; | |
6260a5d2 NJ |
3951 | case ISCSI_UEVENT_GET_CHAP: |
3952 | err = iscsi_get_chap(transport, nlh); | |
3953 | break; | |
3954 | case ISCSI_UEVENT_DELETE_CHAP: | |
3955 | err = iscsi_delete_chap(transport, ev); | |
3956 | break; | |
c6a4bb2e AC |
3957 | case ISCSI_UEVENT_SET_FLASHNODE_PARAMS: |
3958 | err = iscsi_set_flashnode_param(transport, ev, | |
3959 | nlmsg_attrlen(nlh, | |
3960 | sizeof(*ev))); | |
3961 | break; | |
3962 | case ISCSI_UEVENT_NEW_FLASHNODE: | |
3963 | err = iscsi_new_flashnode(transport, ev, | |
3964 | nlmsg_attrlen(nlh, sizeof(*ev))); | |
3965 | break; | |
3966 | case ISCSI_UEVENT_DEL_FLASHNODE: | |
3967 | err = iscsi_del_flashnode(transport, ev); | |
3968 | break; | |
3969 | case ISCSI_UEVENT_LOGIN_FLASHNODE: | |
3970 | err = iscsi_login_flashnode(transport, ev); | |
3971 | break; | |
3972 | case ISCSI_UEVENT_LOGOUT_FLASHNODE: | |
3973 | err = iscsi_logout_flashnode(transport, ev); | |
3974 | break; | |
3975 | case ISCSI_UEVENT_LOGOUT_FLASHNODE_SID: | |
3976 | err = iscsi_logout_flashnode_sid(transport, ev); | |
3977 | break; | |
3af142fe AC |
3978 | case ISCSI_UEVENT_SET_CHAP: |
3979 | err = iscsi_set_chap(transport, ev, | |
3980 | nlmsg_attrlen(nlh, sizeof(*ev))); | |
3981 | break; | |
6fa7c554 LC |
3982 | case ISCSI_UEVENT_GET_HOST_STATS: |
3983 | err = iscsi_get_host_stats(transport, nlh); | |
3984 | break; | |
0896b752 | 3985 | default: |
1d9bf13a | 3986 | err = -ENOSYS; |
0896b752 AA |
3987 | break; |
3988 | } | |
3989 | ||
7b7232f3 | 3990 | module_put(transport->owner); |
0896b752 AA |
3991 | return err; |
3992 | } | |
3993 | ||
b5c7a12d | 3994 | /* |
cd40b7d3 DL |
3995 | * Get message from skb. Each message is processed by iscsi_if_recv_msg. |
3996 | * Malformed skbs with wrong lengths or invalid creds are not processed. | |
b5c7a12d | 3997 | */ |
0896b752 | 3998 | static void |
cd40b7d3 | 3999 | iscsi_if_rx(struct sk_buff *skb) |
0896b752 | 4000 | { |
af170928 CL |
4001 | u32 portid = NETLINK_CB(skb).portid; |
4002 | ||
0b950672 | 4003 | mutex_lock(&rx_queue_mutex); |
e07ebea0 | 4004 | while (skb->len >= NLMSG_HDRLEN) { |
cd40b7d3 DL |
4005 | int err; |
4006 | uint32_t rlen; | |
4007 | struct nlmsghdr *nlh; | |
4008 | struct iscsi_uevent *ev; | |
43514774 | 4009 | uint32_t group; |
bba340c7 | 4010 | int retries = ISCSI_SEND_MAX_ALLOWED; |
cd40b7d3 DL |
4011 | |
4012 | nlh = nlmsg_hdr(skb); | |
c88f0e6b | 4013 | if (nlh->nlmsg_len < sizeof(*nlh) + sizeof(*ev) || |
cd40b7d3 DL |
4014 | skb->len < nlh->nlmsg_len) { |
4015 | break; | |
ee7f8e40 | 4016 | } |
ee7f8e40 | 4017 | |
e07ebea0 | 4018 | ev = nlmsg_data(nlh); |
cd40b7d3 DL |
4019 | rlen = NLMSG_ALIGN(nlh->nlmsg_len); |
4020 | if (rlen > skb->len) | |
4021 | rlen = skb->len; | |
0896b752 | 4022 | |
43514774 | 4023 | err = iscsi_if_recv_msg(skb, nlh, &group); |
cd40b7d3 DL |
4024 | if (err) { |
4025 | ev->type = ISCSI_KEVENT_IF_ERROR; | |
4026 | ev->iferror = err; | |
0896b752 | 4027 | } |
cd40b7d3 DL |
4028 | do { |
4029 | /* | |
4030 | * special case for GET_STATS: | |
4031 | * on success - sending reply and stats from | |
4032 | * inside of if_recv_msg(), | |
4033 | * on error - fall through. | |
4034 | */ | |
4035 | if (ev->type == ISCSI_UEVENT_GET_STATS && !err) | |
4036 | break; | |
6260a5d2 NJ |
4037 | if (ev->type == ISCSI_UEVENT_GET_CHAP && !err) |
4038 | break; | |
af170928 CL |
4039 | err = iscsi_if_send_reply(portid, nlh->nlmsg_type, |
4040 | ev, sizeof(*ev)); | |
bba340c7 BW |
4041 | if (err == -EAGAIN && --retries < 0) { |
4042 | printk(KERN_WARNING "Send reply failed, error %d\n", err); | |
4043 | break; | |
4044 | } | |
46a7c17d | 4045 | } while (err < 0 && err != -ECONNREFUSED && err != -ESRCH); |
cd40b7d3 | 4046 | skb_pull(skb, rlen); |
0896b752 | 4047 | } |
0b950672 | 4048 | mutex_unlock(&rx_queue_mutex); |
0896b752 | 4049 | } |
1da177e4 | 4050 | |
fd7255f5 | 4051 | #define ISCSI_CLASS_ATTR(_prefix,_name,_mode,_show,_store) \ |
ee959b00 | 4052 | struct device_attribute dev_attr_##_prefix##_##_name = \ |
fd7255f5 MC |
4053 | __ATTR(_name,_mode,_show,_store) |
4054 | ||
1da177e4 | 4055 | /* |
0896b752 | 4056 | * iSCSI connection attrs |
1da177e4 | 4057 | */ |
a54a52ca | 4058 | #define iscsi_conn_attr_show(param) \ |
0896b752 | 4059 | static ssize_t \ |
ee959b00 TJ |
4060 | show_conn_param_##param(struct device *dev, \ |
4061 | struct device_attribute *attr, char *buf) \ | |
0896b752 | 4062 | { \ |
ee959b00 | 4063 | struct iscsi_cls_conn *conn = iscsi_dev_to_conn(dev->parent); \ |
7b8631b5 | 4064 | struct iscsi_transport *t = conn->transport; \ |
a54a52ca | 4065 | return t->get_conn_param(conn, param, buf); \ |
0896b752 AA |
4066 | } |
4067 | ||
a54a52ca MC |
4068 | #define iscsi_conn_attr(field, param) \ |
4069 | iscsi_conn_attr_show(param) \ | |
4070 | static ISCSI_CLASS_ATTR(conn, field, S_IRUGO, show_conn_param_##param, \ | |
fd7255f5 | 4071 | NULL); |
0896b752 | 4072 | |
a54a52ca MC |
4073 | iscsi_conn_attr(max_recv_dlength, ISCSI_PARAM_MAX_RECV_DLENGTH); |
4074 | iscsi_conn_attr(max_xmit_dlength, ISCSI_PARAM_MAX_XMIT_DLENGTH); | |
4075 | iscsi_conn_attr(header_digest, ISCSI_PARAM_HDRDGST_EN); | |
4076 | iscsi_conn_attr(data_digest, ISCSI_PARAM_DATADGST_EN); | |
4077 | iscsi_conn_attr(ifmarker, ISCSI_PARAM_IFMARKER_EN); | |
4078 | iscsi_conn_attr(ofmarker, ISCSI_PARAM_OFMARKER_EN); | |
4079 | iscsi_conn_attr(persistent_port, ISCSI_PARAM_PERSISTENT_PORT); | |
a54a52ca MC |
4080 | iscsi_conn_attr(exp_statsn, ISCSI_PARAM_EXP_STATSN); |
4081 | iscsi_conn_attr(persistent_address, ISCSI_PARAM_PERSISTENT_ADDRESS); | |
f6d5180c MC |
4082 | iscsi_conn_attr(ping_tmo, ISCSI_PARAM_PING_TMO); |
4083 | iscsi_conn_attr(recv_tmo, ISCSI_PARAM_RECV_TMO); | |
ae542edb AC |
4084 | iscsi_conn_attr(local_port, ISCSI_PARAM_LOCAL_PORT); |
4085 | iscsi_conn_attr(statsn, ISCSI_PARAM_STATSN); | |
4086 | iscsi_conn_attr(keepalive_tmo, ISCSI_PARAM_KEEPALIVE_TMO); | |
4087 | iscsi_conn_attr(max_segment_size, ISCSI_PARAM_MAX_SEGMENT_SIZE); | |
4088 | iscsi_conn_attr(tcp_timestamp_stat, ISCSI_PARAM_TCP_TIMESTAMP_STAT); | |
4089 | iscsi_conn_attr(tcp_wsf_disable, ISCSI_PARAM_TCP_WSF_DISABLE); | |
4090 | iscsi_conn_attr(tcp_nagle_disable, ISCSI_PARAM_TCP_NAGLE_DISABLE); | |
4091 | iscsi_conn_attr(tcp_timer_scale, ISCSI_PARAM_TCP_TIMER_SCALE); | |
4092 | iscsi_conn_attr(tcp_timestamp_enable, ISCSI_PARAM_TCP_TIMESTAMP_EN); | |
4093 | iscsi_conn_attr(fragment_disable, ISCSI_PARAM_IP_FRAGMENT_DISABLE); | |
4094 | iscsi_conn_attr(ipv4_tos, ISCSI_PARAM_IPV4_TOS); | |
4095 | iscsi_conn_attr(ipv6_traffic_class, ISCSI_PARAM_IPV6_TC); | |
4096 | iscsi_conn_attr(ipv6_flow_label, ISCSI_PARAM_IPV6_FLOW_LABEL); | |
4097 | iscsi_conn_attr(is_fw_assigned_ipv6, ISCSI_PARAM_IS_FW_ASSIGNED_IPV6); | |
4098 | iscsi_conn_attr(tcp_xmit_wsf, ISCSI_PARAM_TCP_XMIT_WSF); | |
4099 | iscsi_conn_attr(tcp_recv_wsf, ISCSI_PARAM_TCP_RECV_WSF); | |
5af62f24 | 4100 | iscsi_conn_attr(local_ipaddr, ISCSI_PARAM_LOCAL_IPADDR); |
ae542edb | 4101 | |
82b8cf40 GKB |
4102 | static const char *const connection_state_names[] = { |
4103 | [ISCSI_CONN_UP] = "up", | |
4104 | [ISCSI_CONN_DOWN] = "down", | |
9e67600e GM |
4105 | [ISCSI_CONN_FAILED] = "failed", |
4106 | [ISCSI_CONN_BOUND] = "bound" | |
82b8cf40 GKB |
4107 | }; |
4108 | ||
4109 | static ssize_t show_conn_state(struct device *dev, | |
4110 | struct device_attribute *attr, char *buf) | |
4111 | { | |
4112 | struct iscsi_cls_conn *conn = iscsi_dev_to_conn(dev->parent); | |
4113 | const char *state = "unknown"; | |
49c5606b | 4114 | int conn_state = READ_ONCE(conn->state); |
82b8cf40 | 4115 | |
49c5606b MC |
4116 | if (conn_state >= 0 && |
4117 | conn_state < ARRAY_SIZE(connection_state_names)) | |
4118 | state = connection_state_names[conn_state]; | |
82b8cf40 | 4119 | |
ec98ea70 | 4120 | return sysfs_emit(buf, "%s\n", state); |
82b8cf40 GKB |
4121 | } |
4122 | static ISCSI_CLASS_ATTR(conn, state, S_IRUGO, show_conn_state, | |
4123 | NULL); | |
1da177e4 | 4124 | |
289324b0 MC |
4125 | #define iscsi_conn_ep_attr_show(param) \ |
4126 | static ssize_t show_conn_ep_param_##param(struct device *dev, \ | |
4127 | struct device_attribute *attr,\ | |
4128 | char *buf) \ | |
4129 | { \ | |
4130 | struct iscsi_cls_conn *conn = iscsi_dev_to_conn(dev->parent); \ | |
4131 | struct iscsi_transport *t = conn->transport; \ | |
4132 | struct iscsi_endpoint *ep; \ | |
4133 | ssize_t rc; \ | |
4134 | \ | |
4135 | /* \ | |
4136 | * Need to make sure ep_disconnect does not free the LLD's \ | |
4137 | * interconnect resources while we are trying to read them. \ | |
4138 | */ \ | |
4139 | mutex_lock(&conn->ep_mutex); \ | |
4140 | ep = conn->ep; \ | |
4141 | if (!ep && t->ep_connect) { \ | |
4142 | mutex_unlock(&conn->ep_mutex); \ | |
4143 | return -ENOTCONN; \ | |
4144 | } \ | |
4145 | \ | |
4146 | if (ep) \ | |
4147 | rc = t->get_ep_param(ep, param, buf); \ | |
4148 | else \ | |
4149 | rc = t->get_conn_param(conn, param, buf); \ | |
4150 | mutex_unlock(&conn->ep_mutex); \ | |
4151 | return rc; \ | |
4152 | } | |
4153 | ||
4154 | #define iscsi_conn_ep_attr(field, param) \ | |
4155 | iscsi_conn_ep_attr_show(param) \ | |
4156 | static ISCSI_CLASS_ATTR(conn, field, S_IRUGO, \ | |
4157 | show_conn_ep_param_##param, NULL); | |
4158 | ||
4159 | iscsi_conn_ep_attr(address, ISCSI_PARAM_CONN_ADDRESS); | |
4160 | iscsi_conn_ep_attr(port, ISCSI_PARAM_CONN_PORT); | |
4161 | ||
3128c6c7 MC |
4162 | static struct attribute *iscsi_conn_attrs[] = { |
4163 | &dev_attr_conn_max_recv_dlength.attr, | |
4164 | &dev_attr_conn_max_xmit_dlength.attr, | |
4165 | &dev_attr_conn_header_digest.attr, | |
4166 | &dev_attr_conn_data_digest.attr, | |
4167 | &dev_attr_conn_ifmarker.attr, | |
4168 | &dev_attr_conn_ofmarker.attr, | |
4169 | &dev_attr_conn_address.attr, | |
4170 | &dev_attr_conn_port.attr, | |
4171 | &dev_attr_conn_exp_statsn.attr, | |
4172 | &dev_attr_conn_persistent_address.attr, | |
4173 | &dev_attr_conn_persistent_port.attr, | |
4174 | &dev_attr_conn_ping_tmo.attr, | |
4175 | &dev_attr_conn_recv_tmo.attr, | |
ae542edb AC |
4176 | &dev_attr_conn_local_port.attr, |
4177 | &dev_attr_conn_statsn.attr, | |
4178 | &dev_attr_conn_keepalive_tmo.attr, | |
4179 | &dev_attr_conn_max_segment_size.attr, | |
4180 | &dev_attr_conn_tcp_timestamp_stat.attr, | |
4181 | &dev_attr_conn_tcp_wsf_disable.attr, | |
4182 | &dev_attr_conn_tcp_nagle_disable.attr, | |
4183 | &dev_attr_conn_tcp_timer_scale.attr, | |
4184 | &dev_attr_conn_tcp_timestamp_enable.attr, | |
4185 | &dev_attr_conn_fragment_disable.attr, | |
4186 | &dev_attr_conn_ipv4_tos.attr, | |
4187 | &dev_attr_conn_ipv6_traffic_class.attr, | |
4188 | &dev_attr_conn_ipv6_flow_label.attr, | |
4189 | &dev_attr_conn_is_fw_assigned_ipv6.attr, | |
4190 | &dev_attr_conn_tcp_xmit_wsf.attr, | |
4191 | &dev_attr_conn_tcp_recv_wsf.attr, | |
5af62f24 | 4192 | &dev_attr_conn_local_ipaddr.attr, |
82b8cf40 | 4193 | &dev_attr_conn_state.attr, |
3128c6c7 MC |
4194 | NULL, |
4195 | }; | |
4196 | ||
587a1f16 | 4197 | static umode_t iscsi_conn_attr_is_visible(struct kobject *kobj, |
3128c6c7 MC |
4198 | struct attribute *attr, int i) |
4199 | { | |
4200 | struct device *cdev = container_of(kobj, struct device, kobj); | |
4201 | struct iscsi_cls_conn *conn = transport_class_to_conn(cdev); | |
4202 | struct iscsi_transport *t = conn->transport; | |
4203 | int param; | |
4204 | ||
4205 | if (attr == &dev_attr_conn_max_recv_dlength.attr) | |
4206 | param = ISCSI_PARAM_MAX_RECV_DLENGTH; | |
4207 | else if (attr == &dev_attr_conn_max_xmit_dlength.attr) | |
4208 | param = ISCSI_PARAM_MAX_XMIT_DLENGTH; | |
4209 | else if (attr == &dev_attr_conn_header_digest.attr) | |
4210 | param = ISCSI_PARAM_HDRDGST_EN; | |
4211 | else if (attr == &dev_attr_conn_data_digest.attr) | |
4212 | param = ISCSI_PARAM_DATADGST_EN; | |
4213 | else if (attr == &dev_attr_conn_ifmarker.attr) | |
4214 | param = ISCSI_PARAM_IFMARKER_EN; | |
4215 | else if (attr == &dev_attr_conn_ofmarker.attr) | |
4216 | param = ISCSI_PARAM_OFMARKER_EN; | |
4217 | else if (attr == &dev_attr_conn_address.attr) | |
4218 | param = ISCSI_PARAM_CONN_ADDRESS; | |
4219 | else if (attr == &dev_attr_conn_port.attr) | |
4220 | param = ISCSI_PARAM_CONN_PORT; | |
4221 | else if (attr == &dev_attr_conn_exp_statsn.attr) | |
4222 | param = ISCSI_PARAM_EXP_STATSN; | |
4223 | else if (attr == &dev_attr_conn_persistent_address.attr) | |
4224 | param = ISCSI_PARAM_PERSISTENT_ADDRESS; | |
4225 | else if (attr == &dev_attr_conn_persistent_port.attr) | |
4226 | param = ISCSI_PARAM_PERSISTENT_PORT; | |
4227 | else if (attr == &dev_attr_conn_ping_tmo.attr) | |
4228 | param = ISCSI_PARAM_PING_TMO; | |
4229 | else if (attr == &dev_attr_conn_recv_tmo.attr) | |
4230 | param = ISCSI_PARAM_RECV_TMO; | |
ae542edb AC |
4231 | else if (attr == &dev_attr_conn_local_port.attr) |
4232 | param = ISCSI_PARAM_LOCAL_PORT; | |
4233 | else if (attr == &dev_attr_conn_statsn.attr) | |
4234 | param = ISCSI_PARAM_STATSN; | |
4235 | else if (attr == &dev_attr_conn_keepalive_tmo.attr) | |
4236 | param = ISCSI_PARAM_KEEPALIVE_TMO; | |
4237 | else if (attr == &dev_attr_conn_max_segment_size.attr) | |
4238 | param = ISCSI_PARAM_MAX_SEGMENT_SIZE; | |
4239 | else if (attr == &dev_attr_conn_tcp_timestamp_stat.attr) | |
4240 | param = ISCSI_PARAM_TCP_TIMESTAMP_STAT; | |
4241 | else if (attr == &dev_attr_conn_tcp_wsf_disable.attr) | |
4242 | param = ISCSI_PARAM_TCP_WSF_DISABLE; | |
4243 | else if (attr == &dev_attr_conn_tcp_nagle_disable.attr) | |
4244 | param = ISCSI_PARAM_TCP_NAGLE_DISABLE; | |
4245 | else if (attr == &dev_attr_conn_tcp_timer_scale.attr) | |
4246 | param = ISCSI_PARAM_TCP_TIMER_SCALE; | |
4247 | else if (attr == &dev_attr_conn_tcp_timestamp_enable.attr) | |
4248 | param = ISCSI_PARAM_TCP_TIMESTAMP_EN; | |
4249 | else if (attr == &dev_attr_conn_fragment_disable.attr) | |
4250 | param = ISCSI_PARAM_IP_FRAGMENT_DISABLE; | |
4251 | else if (attr == &dev_attr_conn_ipv4_tos.attr) | |
4252 | param = ISCSI_PARAM_IPV4_TOS; | |
4253 | else if (attr == &dev_attr_conn_ipv6_traffic_class.attr) | |
4254 | param = ISCSI_PARAM_IPV6_TC; | |
4255 | else if (attr == &dev_attr_conn_ipv6_flow_label.attr) | |
4256 | param = ISCSI_PARAM_IPV6_FLOW_LABEL; | |
4257 | else if (attr == &dev_attr_conn_is_fw_assigned_ipv6.attr) | |
4258 | param = ISCSI_PARAM_IS_FW_ASSIGNED_IPV6; | |
4259 | else if (attr == &dev_attr_conn_tcp_xmit_wsf.attr) | |
4260 | param = ISCSI_PARAM_TCP_XMIT_WSF; | |
4261 | else if (attr == &dev_attr_conn_tcp_recv_wsf.attr) | |
4262 | param = ISCSI_PARAM_TCP_RECV_WSF; | |
5af62f24 AC |
4263 | else if (attr == &dev_attr_conn_local_ipaddr.attr) |
4264 | param = ISCSI_PARAM_LOCAL_IPADDR; | |
82b8cf40 GKB |
4265 | else if (attr == &dev_attr_conn_state.attr) |
4266 | return S_IRUGO; | |
3128c6c7 MC |
4267 | else { |
4268 | WARN_ONCE(1, "Invalid conn attr"); | |
4269 | return 0; | |
4270 | } | |
4271 | ||
4272 | return t->attr_is_visible(ISCSI_PARAM, param); | |
4273 | } | |
4274 | ||
4275 | static struct attribute_group iscsi_conn_group = { | |
4276 | .attrs = iscsi_conn_attrs, | |
4277 | .is_visible = iscsi_conn_attr_is_visible, | |
4278 | }; | |
4279 | ||
1da177e4 | 4280 | /* |
0896b752 | 4281 | * iSCSI session attrs |
1da177e4 | 4282 | */ |
b2c64167 | 4283 | #define iscsi_session_attr_show(param, perm) \ |
fd7255f5 | 4284 | static ssize_t \ |
ee959b00 TJ |
4285 | show_session_param_##param(struct device *dev, \ |
4286 | struct device_attribute *attr, char *buf) \ | |
fd7255f5 | 4287 | { \ |
ee959b00 TJ |
4288 | struct iscsi_cls_session *session = \ |
4289 | iscsi_dev_to_session(dev->parent); \ | |
fd7255f5 | 4290 | struct iscsi_transport *t = session->transport; \ |
b2c64167 MC |
4291 | \ |
4292 | if (perm && !capable(CAP_SYS_ADMIN)) \ | |
4293 | return -EACCES; \ | |
a54a52ca | 4294 | return t->get_session_param(session, param, buf); \ |
fd7255f5 MC |
4295 | } |
4296 | ||
b2c64167 MC |
4297 | #define iscsi_session_attr(field, param, perm) \ |
4298 | iscsi_session_attr_show(param, perm) \ | |
a54a52ca | 4299 | static ISCSI_CLASS_ATTR(sess, field, S_IRUGO, show_session_param_##param, \ |
fd7255f5 | 4300 | NULL); |
b2c64167 MC |
4301 | iscsi_session_attr(targetname, ISCSI_PARAM_TARGET_NAME, 0); |
4302 | iscsi_session_attr(initial_r2t, ISCSI_PARAM_INITIAL_R2T_EN, 0); | |
4303 | iscsi_session_attr(max_outstanding_r2t, ISCSI_PARAM_MAX_R2T, 0); | |
4304 | iscsi_session_attr(immediate_data, ISCSI_PARAM_IMM_DATA_EN, 0); | |
4305 | iscsi_session_attr(first_burst_len, ISCSI_PARAM_FIRST_BURST, 0); | |
4306 | iscsi_session_attr(max_burst_len, ISCSI_PARAM_MAX_BURST, 0); | |
4307 | iscsi_session_attr(data_pdu_in_order, ISCSI_PARAM_PDU_INORDER_EN, 0); | |
4308 | iscsi_session_attr(data_seq_in_order, ISCSI_PARAM_DATASEQ_INORDER_EN, 0); | |
4309 | iscsi_session_attr(erl, ISCSI_PARAM_ERL, 0); | |
4310 | iscsi_session_attr(tpgt, ISCSI_PARAM_TPGT, 0); | |
4311 | iscsi_session_attr(username, ISCSI_PARAM_USERNAME, 1); | |
4312 | iscsi_session_attr(username_in, ISCSI_PARAM_USERNAME_IN, 1); | |
4313 | iscsi_session_attr(password, ISCSI_PARAM_PASSWORD, 1); | |
4314 | iscsi_session_attr(password_in, ISCSI_PARAM_PASSWORD_IN, 1); | |
30534952 MC |
4315 | iscsi_session_attr(chap_out_idx, ISCSI_PARAM_CHAP_OUT_IDX, 1); |
4316 | iscsi_session_attr(chap_in_idx, ISCSI_PARAM_CHAP_IN_IDX, 1); | |
4cd49ea1 MC |
4317 | iscsi_session_attr(fast_abort, ISCSI_PARAM_FAST_ABORT, 0); |
4318 | iscsi_session_attr(abort_tmo, ISCSI_PARAM_ABORT_TMO, 0); | |
4319 | iscsi_session_attr(lu_reset_tmo, ISCSI_PARAM_LU_RESET_TMO, 0); | |
3fe5ae8b | 4320 | iscsi_session_attr(tgt_reset_tmo, ISCSI_PARAM_TGT_RESET_TMO, 0); |
88dfd340 | 4321 | iscsi_session_attr(ifacename, ISCSI_PARAM_IFACE_NAME, 0); |
3b2bef1f VC |
4322 | iscsi_session_attr(initiatorname, ISCSI_PARAM_INITIATOR_NAME, 0); |
4323 | iscsi_session_attr(targetalias, ISCSI_PARAM_TARGET_ALIAS, 0); | |
3b9373e9 EW |
4324 | iscsi_session_attr(boot_root, ISCSI_PARAM_BOOT_ROOT, 0); |
4325 | iscsi_session_attr(boot_nic, ISCSI_PARAM_BOOT_NIC, 0); | |
4326 | iscsi_session_attr(boot_target, ISCSI_PARAM_BOOT_TARGET, 0); | |
ae542edb AC |
4327 | iscsi_session_attr(auto_snd_tgt_disable, ISCSI_PARAM_AUTO_SND_TGT_DISABLE, 0); |
4328 | iscsi_session_attr(discovery_session, ISCSI_PARAM_DISCOVERY_SESS, 0); | |
4329 | iscsi_session_attr(portal_type, ISCSI_PARAM_PORTAL_TYPE, 0); | |
4330 | iscsi_session_attr(chap_auth, ISCSI_PARAM_CHAP_AUTH_EN, 0); | |
4331 | iscsi_session_attr(discovery_logout, ISCSI_PARAM_DISCOVERY_LOGOUT_EN, 0); | |
4332 | iscsi_session_attr(bidi_chap, ISCSI_PARAM_BIDI_CHAP_EN, 0); | |
4333 | iscsi_session_attr(discovery_auth_optional, | |
4334 | ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL, 0); | |
4335 | iscsi_session_attr(def_time2wait, ISCSI_PARAM_DEF_TIME2WAIT, 0); | |
4336 | iscsi_session_attr(def_time2retain, ISCSI_PARAM_DEF_TIME2RETAIN, 0); | |
4337 | iscsi_session_attr(isid, ISCSI_PARAM_ISID, 0); | |
4338 | iscsi_session_attr(tsid, ISCSI_PARAM_TSID, 0); | |
4339 | iscsi_session_attr(def_taskmgmt_tmo, ISCSI_PARAM_DEF_TASKMGMT_TMO, 0); | |
4340 | iscsi_session_attr(discovery_parent_idx, ISCSI_PARAM_DISCOVERY_PARENT_IDX, 0); | |
4341 | iscsi_session_attr(discovery_parent_type, ISCSI_PARAM_DISCOVERY_PARENT_TYPE, 0); | |
1da177e4 | 4342 | |
6eabafbe | 4343 | static ssize_t |
ee959b00 TJ |
4344 | show_priv_session_state(struct device *dev, struct device_attribute *attr, |
4345 | char *buf) | |
6eabafbe | 4346 | { |
ee959b00 | 4347 | struct iscsi_cls_session *session = iscsi_dev_to_session(dev->parent); |
ec98ea70 | 4348 | return sysfs_emit(buf, "%s\n", iscsi_session_state_name(session->state)); |
6eabafbe MC |
4349 | } |
4350 | static ISCSI_CLASS_ATTR(priv_sess, state, S_IRUGO, show_priv_session_state, | |
4351 | NULL); | |
0c70d84b MC |
4352 | static ssize_t |
4353 | show_priv_session_creator(struct device *dev, struct device_attribute *attr, | |
4354 | char *buf) | |
4355 | { | |
4356 | struct iscsi_cls_session *session = iscsi_dev_to_session(dev->parent); | |
ec98ea70 | 4357 | return sysfs_emit(buf, "%d\n", session->creator); |
0c70d84b MC |
4358 | } |
4359 | static ISCSI_CLASS_ATTR(priv_sess, creator, S_IRUGO, show_priv_session_creator, | |
4360 | NULL); | |
930a9f04 MR |
4361 | static ssize_t |
4362 | show_priv_session_target_id(struct device *dev, struct device_attribute *attr, | |
4363 | char *buf) | |
4364 | { | |
4365 | struct iscsi_cls_session *session = iscsi_dev_to_session(dev->parent); | |
ec98ea70 | 4366 | return sysfs_emit(buf, "%d\n", session->target_id); |
930a9f04 MR |
4367 | } |
4368 | static ISCSI_CLASS_ATTR(priv_sess, target_id, S_IRUGO, | |
4369 | show_priv_session_target_id, NULL); | |
6eabafbe | 4370 | |
fd7255f5 MC |
4371 | #define iscsi_priv_session_attr_show(field, format) \ |
4372 | static ssize_t \ | |
ee959b00 TJ |
4373 | show_priv_session_##field(struct device *dev, \ |
4374 | struct device_attribute *attr, char *buf) \ | |
fd7255f5 | 4375 | { \ |
ee959b00 TJ |
4376 | struct iscsi_cls_session *session = \ |
4377 | iscsi_dev_to_session(dev->parent); \ | |
fe4f0bde | 4378 | if (session->field == -1) \ |
ec98ea70 CL |
4379 | return sysfs_emit(buf, "off\n"); \ |
4380 | return sysfs_emit(buf, format"\n", session->field); \ | |
fd7255f5 MC |
4381 | } |
4382 | ||
fe4f0bde VC |
4383 | #define iscsi_priv_session_attr_store(field) \ |
4384 | static ssize_t \ | |
4385 | store_priv_session_##field(struct device *dev, \ | |
4386 | struct device_attribute *attr, \ | |
4387 | const char *buf, size_t count) \ | |
4388 | { \ | |
4389 | int val; \ | |
4390 | char *cp; \ | |
4391 | struct iscsi_cls_session *session = \ | |
4392 | iscsi_dev_to_session(dev->parent); \ | |
4393 | if ((session->state == ISCSI_SESSION_FREE) || \ | |
4394 | (session->state == ISCSI_SESSION_FAILED)) \ | |
4395 | return -EBUSY; \ | |
9c8108a4 | 4396 | if (strncmp(buf, "off", 3) == 0) { \ |
fe4f0bde | 4397 | session->field = -1; \ |
9c8108a4 CL |
4398 | session->field##_sysfs_override = true; \ |
4399 | } else { \ | |
fe4f0bde VC |
4400 | val = simple_strtoul(buf, &cp, 0); \ |
4401 | if (*cp != '\0' && *cp != '\n') \ | |
4402 | return -EINVAL; \ | |
4403 | session->field = val; \ | |
9c8108a4 | 4404 | session->field##_sysfs_override = true; \ |
fe4f0bde VC |
4405 | } \ |
4406 | return count; \ | |
4407 | } | |
4408 | ||
4409 | #define iscsi_priv_session_rw_attr(field, format) \ | |
fd7255f5 | 4410 | iscsi_priv_session_attr_show(field, format) \ |
fe4f0bde | 4411 | iscsi_priv_session_attr_store(field) \ |
523f3c80 | 4412 | static ISCSI_CLASS_ATTR(priv_sess, field, S_IRUGO | S_IWUSR, \ |
fe4f0bde VC |
4413 | show_priv_session_##field, \ |
4414 | store_priv_session_##field) | |
9c8108a4 | 4415 | |
fe4f0bde | 4416 | iscsi_priv_session_rw_attr(recovery_tmo, "%d"); |
fd7255f5 | 4417 | |
1d063c17 MC |
4418 | static struct attribute *iscsi_session_attrs[] = { |
4419 | &dev_attr_sess_initial_r2t.attr, | |
4420 | &dev_attr_sess_max_outstanding_r2t.attr, | |
4421 | &dev_attr_sess_immediate_data.attr, | |
4422 | &dev_attr_sess_first_burst_len.attr, | |
4423 | &dev_attr_sess_max_burst_len.attr, | |
4424 | &dev_attr_sess_data_pdu_in_order.attr, | |
4425 | &dev_attr_sess_data_seq_in_order.attr, | |
4426 | &dev_attr_sess_erl.attr, | |
4427 | &dev_attr_sess_targetname.attr, | |
4428 | &dev_attr_sess_tpgt.attr, | |
4429 | &dev_attr_sess_password.attr, | |
4430 | &dev_attr_sess_password_in.attr, | |
4431 | &dev_attr_sess_username.attr, | |
4432 | &dev_attr_sess_username_in.attr, | |
4433 | &dev_attr_sess_fast_abort.attr, | |
4434 | &dev_attr_sess_abort_tmo.attr, | |
4435 | &dev_attr_sess_lu_reset_tmo.attr, | |
4436 | &dev_attr_sess_tgt_reset_tmo.attr, | |
4437 | &dev_attr_sess_ifacename.attr, | |
4438 | &dev_attr_sess_initiatorname.attr, | |
4439 | &dev_attr_sess_targetalias.attr, | |
3b9373e9 EW |
4440 | &dev_attr_sess_boot_root.attr, |
4441 | &dev_attr_sess_boot_nic.attr, | |
4442 | &dev_attr_sess_boot_target.attr, | |
1d063c17 MC |
4443 | &dev_attr_priv_sess_recovery_tmo.attr, |
4444 | &dev_attr_priv_sess_state.attr, | |
0c70d84b | 4445 | &dev_attr_priv_sess_creator.attr, |
30534952 MC |
4446 | &dev_attr_sess_chap_out_idx.attr, |
4447 | &dev_attr_sess_chap_in_idx.attr, | |
930a9f04 | 4448 | &dev_attr_priv_sess_target_id.attr, |
ae542edb AC |
4449 | &dev_attr_sess_auto_snd_tgt_disable.attr, |
4450 | &dev_attr_sess_discovery_session.attr, | |
4451 | &dev_attr_sess_portal_type.attr, | |
4452 | &dev_attr_sess_chap_auth.attr, | |
4453 | &dev_attr_sess_discovery_logout.attr, | |
4454 | &dev_attr_sess_bidi_chap.attr, | |
4455 | &dev_attr_sess_discovery_auth_optional.attr, | |
4456 | &dev_attr_sess_def_time2wait.attr, | |
4457 | &dev_attr_sess_def_time2retain.attr, | |
4458 | &dev_attr_sess_isid.attr, | |
4459 | &dev_attr_sess_tsid.attr, | |
4460 | &dev_attr_sess_def_taskmgmt_tmo.attr, | |
4461 | &dev_attr_sess_discovery_parent_idx.attr, | |
4462 | &dev_attr_sess_discovery_parent_type.attr, | |
1d063c17 MC |
4463 | NULL, |
4464 | }; | |
4465 | ||
587a1f16 | 4466 | static umode_t iscsi_session_attr_is_visible(struct kobject *kobj, |
1d063c17 MC |
4467 | struct attribute *attr, int i) |
4468 | { | |
4469 | struct device *cdev = container_of(kobj, struct device, kobj); | |
4470 | struct iscsi_cls_session *session = transport_class_to_session(cdev); | |
4471 | struct iscsi_transport *t = session->transport; | |
4472 | int param; | |
4473 | ||
4474 | if (attr == &dev_attr_sess_initial_r2t.attr) | |
4475 | param = ISCSI_PARAM_INITIAL_R2T_EN; | |
4476 | else if (attr == &dev_attr_sess_max_outstanding_r2t.attr) | |
4477 | param = ISCSI_PARAM_MAX_R2T; | |
4478 | else if (attr == &dev_attr_sess_immediate_data.attr) | |
4479 | param = ISCSI_PARAM_IMM_DATA_EN; | |
4480 | else if (attr == &dev_attr_sess_first_burst_len.attr) | |
4481 | param = ISCSI_PARAM_FIRST_BURST; | |
4482 | else if (attr == &dev_attr_sess_max_burst_len.attr) | |
4483 | param = ISCSI_PARAM_MAX_BURST; | |
4484 | else if (attr == &dev_attr_sess_data_pdu_in_order.attr) | |
4485 | param = ISCSI_PARAM_PDU_INORDER_EN; | |
4486 | else if (attr == &dev_attr_sess_data_seq_in_order.attr) | |
4487 | param = ISCSI_PARAM_DATASEQ_INORDER_EN; | |
4488 | else if (attr == &dev_attr_sess_erl.attr) | |
4489 | param = ISCSI_PARAM_ERL; | |
4490 | else if (attr == &dev_attr_sess_targetname.attr) | |
4491 | param = ISCSI_PARAM_TARGET_NAME; | |
4492 | else if (attr == &dev_attr_sess_tpgt.attr) | |
4493 | param = ISCSI_PARAM_TPGT; | |
30534952 MC |
4494 | else if (attr == &dev_attr_sess_chap_in_idx.attr) |
4495 | param = ISCSI_PARAM_CHAP_IN_IDX; | |
4496 | else if (attr == &dev_attr_sess_chap_out_idx.attr) | |
4497 | param = ISCSI_PARAM_CHAP_OUT_IDX; | |
1d063c17 MC |
4498 | else if (attr == &dev_attr_sess_password.attr) |
4499 | param = ISCSI_PARAM_USERNAME; | |
4500 | else if (attr == &dev_attr_sess_password_in.attr) | |
4501 | param = ISCSI_PARAM_USERNAME_IN; | |
4502 | else if (attr == &dev_attr_sess_username.attr) | |
4503 | param = ISCSI_PARAM_PASSWORD; | |
4504 | else if (attr == &dev_attr_sess_username_in.attr) | |
4505 | param = ISCSI_PARAM_PASSWORD_IN; | |
4506 | else if (attr == &dev_attr_sess_fast_abort.attr) | |
4507 | param = ISCSI_PARAM_FAST_ABORT; | |
4508 | else if (attr == &dev_attr_sess_abort_tmo.attr) | |
4509 | param = ISCSI_PARAM_ABORT_TMO; | |
4510 | else if (attr == &dev_attr_sess_lu_reset_tmo.attr) | |
4511 | param = ISCSI_PARAM_LU_RESET_TMO; | |
4512 | else if (attr == &dev_attr_sess_tgt_reset_tmo.attr) | |
4513 | param = ISCSI_PARAM_TGT_RESET_TMO; | |
4514 | else if (attr == &dev_attr_sess_ifacename.attr) | |
4515 | param = ISCSI_PARAM_IFACE_NAME; | |
4516 | else if (attr == &dev_attr_sess_initiatorname.attr) | |
4517 | param = ISCSI_PARAM_INITIATOR_NAME; | |
4518 | else if (attr == &dev_attr_sess_targetalias.attr) | |
4519 | param = ISCSI_PARAM_TARGET_ALIAS; | |
3b9373e9 EW |
4520 | else if (attr == &dev_attr_sess_boot_root.attr) |
4521 | param = ISCSI_PARAM_BOOT_ROOT; | |
4522 | else if (attr == &dev_attr_sess_boot_nic.attr) | |
4523 | param = ISCSI_PARAM_BOOT_NIC; | |
4524 | else if (attr == &dev_attr_sess_boot_target.attr) | |
4525 | param = ISCSI_PARAM_BOOT_TARGET; | |
ae542edb AC |
4526 | else if (attr == &dev_attr_sess_auto_snd_tgt_disable.attr) |
4527 | param = ISCSI_PARAM_AUTO_SND_TGT_DISABLE; | |
4528 | else if (attr == &dev_attr_sess_discovery_session.attr) | |
4529 | param = ISCSI_PARAM_DISCOVERY_SESS; | |
4530 | else if (attr == &dev_attr_sess_portal_type.attr) | |
4531 | param = ISCSI_PARAM_PORTAL_TYPE; | |
4532 | else if (attr == &dev_attr_sess_chap_auth.attr) | |
4533 | param = ISCSI_PARAM_CHAP_AUTH_EN; | |
4534 | else if (attr == &dev_attr_sess_discovery_logout.attr) | |
4535 | param = ISCSI_PARAM_DISCOVERY_LOGOUT_EN; | |
4536 | else if (attr == &dev_attr_sess_bidi_chap.attr) | |
4537 | param = ISCSI_PARAM_BIDI_CHAP_EN; | |
4538 | else if (attr == &dev_attr_sess_discovery_auth_optional.attr) | |
4539 | param = ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL; | |
4540 | else if (attr == &dev_attr_sess_def_time2wait.attr) | |
4541 | param = ISCSI_PARAM_DEF_TIME2WAIT; | |
4542 | else if (attr == &dev_attr_sess_def_time2retain.attr) | |
4543 | param = ISCSI_PARAM_DEF_TIME2RETAIN; | |
4544 | else if (attr == &dev_attr_sess_isid.attr) | |
4545 | param = ISCSI_PARAM_ISID; | |
4546 | else if (attr == &dev_attr_sess_tsid.attr) | |
4547 | param = ISCSI_PARAM_TSID; | |
4548 | else if (attr == &dev_attr_sess_def_taskmgmt_tmo.attr) | |
4549 | param = ISCSI_PARAM_DEF_TASKMGMT_TMO; | |
4550 | else if (attr == &dev_attr_sess_discovery_parent_idx.attr) | |
4551 | param = ISCSI_PARAM_DISCOVERY_PARENT_IDX; | |
4552 | else if (attr == &dev_attr_sess_discovery_parent_type.attr) | |
4553 | param = ISCSI_PARAM_DISCOVERY_PARENT_TYPE; | |
1d063c17 MC |
4554 | else if (attr == &dev_attr_priv_sess_recovery_tmo.attr) |
4555 | return S_IRUGO | S_IWUSR; | |
4556 | else if (attr == &dev_attr_priv_sess_state.attr) | |
4557 | return S_IRUGO; | |
0c70d84b MC |
4558 | else if (attr == &dev_attr_priv_sess_creator.attr) |
4559 | return S_IRUGO; | |
930a9f04 MR |
4560 | else if (attr == &dev_attr_priv_sess_target_id.attr) |
4561 | return S_IRUGO; | |
1d063c17 MC |
4562 | else { |
4563 | WARN_ONCE(1, "Invalid session attr"); | |
4564 | return 0; | |
4565 | } | |
4566 | ||
4567 | return t->attr_is_visible(ISCSI_PARAM, param); | |
4568 | } | |
4569 | ||
4570 | static struct attribute_group iscsi_session_group = { | |
4571 | .attrs = iscsi_session_attrs, | |
4572 | .is_visible = iscsi_session_attr_is_visible, | |
4573 | }; | |
4574 | ||
1819dc81 MC |
4575 | /* |
4576 | * iSCSI host attrs | |
4577 | */ | |
4578 | #define iscsi_host_attr_show(param) \ | |
4579 | static ssize_t \ | |
ee959b00 TJ |
4580 | show_host_param_##param(struct device *dev, \ |
4581 | struct device_attribute *attr, char *buf) \ | |
1819dc81 | 4582 | { \ |
ee959b00 | 4583 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1819dc81 MC |
4584 | struct iscsi_internal *priv = to_iscsi_internal(shost->transportt); \ |
4585 | return priv->iscsi_transport->get_host_param(shost, param, buf); \ | |
4586 | } | |
4587 | ||
4588 | #define iscsi_host_attr(field, param) \ | |
4589 | iscsi_host_attr_show(param) \ | |
4590 | static ISCSI_CLASS_ATTR(host, field, S_IRUGO, show_host_param_##param, \ | |
4591 | NULL); | |
4592 | ||
d8196ed2 | 4593 | iscsi_host_attr(netdev, ISCSI_HOST_PARAM_NETDEV_NAME); |
1819dc81 | 4594 | iscsi_host_attr(hwaddress, ISCSI_HOST_PARAM_HWADDRESS); |
d8196ed2 | 4595 | iscsi_host_attr(ipaddress, ISCSI_HOST_PARAM_IPADDRESS); |
8ad5781a | 4596 | iscsi_host_attr(initiatorname, ISCSI_HOST_PARAM_INITIATOR_NAME); |
aeddde29 VC |
4597 | iscsi_host_attr(port_state, ISCSI_HOST_PARAM_PORT_STATE); |
4598 | iscsi_host_attr(port_speed, ISCSI_HOST_PARAM_PORT_SPEED); | |
1819dc81 | 4599 | |
f27fb2ef MC |
4600 | static struct attribute *iscsi_host_attrs[] = { |
4601 | &dev_attr_host_netdev.attr, | |
4602 | &dev_attr_host_hwaddress.attr, | |
4603 | &dev_attr_host_ipaddress.attr, | |
4604 | &dev_attr_host_initiatorname.attr, | |
aeddde29 VC |
4605 | &dev_attr_host_port_state.attr, |
4606 | &dev_attr_host_port_speed.attr, | |
f27fb2ef MC |
4607 | NULL, |
4608 | }; | |
4609 | ||
587a1f16 | 4610 | static umode_t iscsi_host_attr_is_visible(struct kobject *kobj, |
f27fb2ef MC |
4611 | struct attribute *attr, int i) |
4612 | { | |
4613 | struct device *cdev = container_of(kobj, struct device, kobj); | |
4614 | struct Scsi_Host *shost = transport_class_to_shost(cdev); | |
4615 | struct iscsi_internal *priv = to_iscsi_internal(shost->transportt); | |
4616 | int param; | |
4617 | ||
4618 | if (attr == &dev_attr_host_netdev.attr) | |
4619 | param = ISCSI_HOST_PARAM_NETDEV_NAME; | |
4620 | else if (attr == &dev_attr_host_hwaddress.attr) | |
4621 | param = ISCSI_HOST_PARAM_HWADDRESS; | |
4622 | else if (attr == &dev_attr_host_ipaddress.attr) | |
4623 | param = ISCSI_HOST_PARAM_IPADDRESS; | |
4624 | else if (attr == &dev_attr_host_initiatorname.attr) | |
4625 | param = ISCSI_HOST_PARAM_INITIATOR_NAME; | |
aeddde29 VC |
4626 | else if (attr == &dev_attr_host_port_state.attr) |
4627 | param = ISCSI_HOST_PARAM_PORT_STATE; | |
4628 | else if (attr == &dev_attr_host_port_speed.attr) | |
4629 | param = ISCSI_HOST_PARAM_PORT_SPEED; | |
f27fb2ef MC |
4630 | else { |
4631 | WARN_ONCE(1, "Invalid host attr"); | |
4632 | return 0; | |
4633 | } | |
4634 | ||
4635 | return priv->iscsi_transport->attr_is_visible(ISCSI_HOST_PARAM, param); | |
4636 | } | |
4637 | ||
4638 | static struct attribute_group iscsi_host_group = { | |
4639 | .attrs = iscsi_host_attrs, | |
4640 | .is_visible = iscsi_host_attr_is_visible, | |
4641 | }; | |
1819dc81 | 4642 | |
aeddde29 VC |
4643 | /* convert iscsi_port_speed values to ascii string name */ |
4644 | static const struct { | |
4645 | enum iscsi_port_speed value; | |
4646 | char *name; | |
4647 | } iscsi_port_speed_names[] = { | |
4648 | {ISCSI_PORT_SPEED_UNKNOWN, "Unknown" }, | |
4649 | {ISCSI_PORT_SPEED_10MBPS, "10 Mbps" }, | |
4650 | {ISCSI_PORT_SPEED_100MBPS, "100 Mbps" }, | |
4651 | {ISCSI_PORT_SPEED_1GBPS, "1 Gbps" }, | |
4652 | {ISCSI_PORT_SPEED_10GBPS, "10 Gbps" }, | |
f9e4fa46 JB |
4653 | {ISCSI_PORT_SPEED_25GBPS, "25 Gbps" }, |
4654 | {ISCSI_PORT_SPEED_40GBPS, "40 Gbps" }, | |
aeddde29 VC |
4655 | }; |
4656 | ||
4657 | char *iscsi_get_port_speed_name(struct Scsi_Host *shost) | |
4658 | { | |
4659 | int i; | |
4660 | char *speed = "Unknown!"; | |
4661 | struct iscsi_cls_host *ihost = shost->shost_data; | |
4662 | uint32_t port_speed = ihost->port_speed; | |
4663 | ||
4664 | for (i = 0; i < ARRAY_SIZE(iscsi_port_speed_names); i++) { | |
4665 | if (iscsi_port_speed_names[i].value & port_speed) { | |
4666 | speed = iscsi_port_speed_names[i].name; | |
4667 | break; | |
4668 | } | |
4669 | } | |
4670 | return speed; | |
4671 | } | |
4672 | EXPORT_SYMBOL_GPL(iscsi_get_port_speed_name); | |
4673 | ||
4674 | /* convert iscsi_port_state values to ascii string name */ | |
4675 | static const struct { | |
4676 | enum iscsi_port_state value; | |
4677 | char *name; | |
4678 | } iscsi_port_state_names[] = { | |
4679 | {ISCSI_PORT_STATE_DOWN, "LINK DOWN" }, | |
4680 | {ISCSI_PORT_STATE_UP, "LINK UP" }, | |
4681 | }; | |
4682 | ||
4683 | char *iscsi_get_port_state_name(struct Scsi_Host *shost) | |
4684 | { | |
4685 | int i; | |
4686 | char *state = "Unknown!"; | |
4687 | struct iscsi_cls_host *ihost = shost->shost_data; | |
4688 | uint32_t port_state = ihost->port_state; | |
4689 | ||
4690 | for (i = 0; i < ARRAY_SIZE(iscsi_port_state_names); i++) { | |
4691 | if (iscsi_port_state_names[i].value & port_state) { | |
4692 | state = iscsi_port_state_names[i].name; | |
4693 | break; | |
4694 | } | |
4695 | } | |
4696 | return state; | |
4697 | } | |
4698 | EXPORT_SYMBOL_GPL(iscsi_get_port_state_name); | |
4699 | ||
0896b752 AA |
4700 | static int iscsi_session_match(struct attribute_container *cont, |
4701 | struct device *dev) | |
1da177e4 | 4702 | { |
7b8631b5 | 4703 | struct iscsi_cls_session *session; |
1da177e4 | 4704 | struct Scsi_Host *shost; |
0896b752 AA |
4705 | struct iscsi_internal *priv; |
4706 | ||
4707 | if (!iscsi_is_session_dev(dev)) | |
4708 | return 0; | |
1da177e4 | 4709 | |
7b8631b5 MC |
4710 | session = iscsi_dev_to_session(dev); |
4711 | shost = iscsi_session_to_shost(session); | |
0896b752 | 4712 | if (!shost->transportt) |
1da177e4 LT |
4713 | return 0; |
4714 | ||
0896b752 AA |
4715 | priv = to_iscsi_internal(shost->transportt); |
4716 | if (priv->session_cont.ac.class != &iscsi_session_class.class) | |
1da177e4 LT |
4717 | return 0; |
4718 | ||
0896b752 | 4719 | return &priv->session_cont.ac == cont; |
1da177e4 LT |
4720 | } |
4721 | ||
0896b752 AA |
4722 | static int iscsi_conn_match(struct attribute_container *cont, |
4723 | struct device *dev) | |
4724 | { | |
7b8631b5 MC |
4725 | struct iscsi_cls_session *session; |
4726 | struct iscsi_cls_conn *conn; | |
1da177e4 | 4727 | struct Scsi_Host *shost; |
0896b752 | 4728 | struct iscsi_internal *priv; |
1da177e4 | 4729 | |
0896b752 | 4730 | if (!iscsi_is_conn_dev(dev)) |
1da177e4 LT |
4731 | return 0; |
4732 | ||
7b8631b5 MC |
4733 | conn = iscsi_dev_to_conn(dev); |
4734 | session = iscsi_dev_to_session(conn->dev.parent); | |
4735 | shost = iscsi_session_to_shost(session); | |
4736 | ||
0896b752 | 4737 | if (!shost->transportt) |
1da177e4 LT |
4738 | return 0; |
4739 | ||
0896b752 AA |
4740 | priv = to_iscsi_internal(shost->transportt); |
4741 | if (priv->conn_cont.ac.class != &iscsi_connection_class.class) | |
4742 | return 0; | |
1da177e4 | 4743 | |
0896b752 AA |
4744 | return &priv->conn_cont.ac == cont; |
4745 | } | |
4746 | ||
30a6c652 MC |
4747 | static int iscsi_host_match(struct attribute_container *cont, |
4748 | struct device *dev) | |
4749 | { | |
4750 | struct Scsi_Host *shost; | |
4751 | struct iscsi_internal *priv; | |
4752 | ||
4753 | if (!scsi_is_host_device(dev)) | |
4754 | return 0; | |
4755 | ||
4756 | shost = dev_to_shost(dev); | |
4757 | if (!shost->transportt || | |
4758 | shost->transportt->host_attrs.ac.class != &iscsi_host_class.class) | |
4759 | return 0; | |
4760 | ||
4761 | priv = to_iscsi_internal(shost->transportt); | |
4762 | return &priv->t.host_attrs.ac == cont; | |
4763 | } | |
4764 | ||
7b8631b5 MC |
4765 | struct scsi_transport_template * |
4766 | iscsi_register_transport(struct iscsi_transport *tt) | |
0896b752 AA |
4767 | { |
4768 | struct iscsi_internal *priv; | |
4769 | unsigned long flags; | |
f27fb2ef | 4770 | int err; |
0896b752 AA |
4771 | |
4772 | BUG_ON(!tt); | |
891e2639 | 4773 | WARN_ON(tt->ep_disconnect && !tt->unbind_conn); |
0896b752 AA |
4774 | |
4775 | priv = iscsi_if_transport_lookup(tt); | |
4776 | if (priv) | |
7b8631b5 | 4777 | return NULL; |
0896b752 | 4778 | |
24669f75 | 4779 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); |
0896b752 | 4780 | if (!priv) |
7b8631b5 | 4781 | return NULL; |
0896b752 | 4782 | INIT_LIST_HEAD(&priv->list); |
0896b752 | 4783 | priv->iscsi_transport = tt; |
30a6c652 | 4784 | priv->t.user_scan = iscsi_user_scan; |
06d25af4 | 4785 | priv->t.create_work_queue = 1; |
0896b752 | 4786 | |
ee959b00 | 4787 | priv->dev.class = &iscsi_transport_class; |
71610f55 | 4788 | dev_set_name(&priv->dev, "%s", tt->name); |
ee959b00 | 4789 | err = device_register(&priv->dev); |
0896b752 AA |
4790 | if (err) |
4791 | goto free_priv; | |
4792 | ||
ee959b00 | 4793 | err = sysfs_create_group(&priv->dev.kobj, &iscsi_transport_group); |
0896b752 | 4794 | if (err) |
ee959b00 | 4795 | goto unregister_dev; |
0896b752 | 4796 | |
30a6c652 | 4797 | /* host parameters */ |
30a6c652 MC |
4798 | priv->t.host_attrs.ac.class = &iscsi_host_class.class; |
4799 | priv->t.host_attrs.ac.match = iscsi_host_match; | |
f27fb2ef | 4800 | priv->t.host_attrs.ac.grp = &iscsi_host_group; |
32c6e1b9 | 4801 | priv->t.host_size = sizeof(struct iscsi_cls_host); |
30a6c652 MC |
4802 | transport_container_register(&priv->t.host_attrs); |
4803 | ||
0896b752 | 4804 | /* connection parameters */ |
0896b752 AA |
4805 | priv->conn_cont.ac.class = &iscsi_connection_class.class; |
4806 | priv->conn_cont.ac.match = iscsi_conn_match; | |
3128c6c7 | 4807 | priv->conn_cont.ac.grp = &iscsi_conn_group; |
0896b752 | 4808 | transport_container_register(&priv->conn_cont); |
1da177e4 | 4809 | |
0896b752 | 4810 | /* session parameters */ |
0896b752 AA |
4811 | priv->session_cont.ac.class = &iscsi_session_class.class; |
4812 | priv->session_cont.ac.match = iscsi_session_match; | |
1d063c17 | 4813 | priv->session_cont.ac.grp = &iscsi_session_group; |
0896b752 AA |
4814 | transport_container_register(&priv->session_cont); |
4815 | ||
0896b752 AA |
4816 | spin_lock_irqsave(&iscsi_transport_lock, flags); |
4817 | list_add(&priv->list, &iscsi_transports); | |
4818 | spin_unlock_irqrestore(&iscsi_transport_lock, flags); | |
4819 | ||
4820 | printk(KERN_NOTICE "iscsi: registered transport (%s)\n", tt->name); | |
7b8631b5 | 4821 | return &priv->t; |
1da177e4 | 4822 | |
ee959b00 TJ |
4823 | unregister_dev: |
4824 | device_unregister(&priv->dev); | |
d82ff9be | 4825 | return NULL; |
0896b752 AA |
4826 | free_priv: |
4827 | kfree(priv); | |
7b8631b5 | 4828 | return NULL; |
1da177e4 | 4829 | } |
0896b752 AA |
4830 | EXPORT_SYMBOL_GPL(iscsi_register_transport); |
4831 | ||
4832 | int iscsi_unregister_transport(struct iscsi_transport *tt) | |
4833 | { | |
4834 | struct iscsi_internal *priv; | |
4835 | unsigned long flags; | |
4836 | ||
4837 | BUG_ON(!tt); | |
4838 | ||
0b950672 | 4839 | mutex_lock(&rx_queue_mutex); |
0896b752 AA |
4840 | |
4841 | priv = iscsi_if_transport_lookup(tt); | |
4842 | BUG_ON (!priv); | |
4843 | ||
0896b752 AA |
4844 | spin_lock_irqsave(&iscsi_transport_lock, flags); |
4845 | list_del(&priv->list); | |
4846 | spin_unlock_irqrestore(&iscsi_transport_lock, flags); | |
4847 | ||
4848 | transport_container_unregister(&priv->conn_cont); | |
4849 | transport_container_unregister(&priv->session_cont); | |
30a6c652 | 4850 | transport_container_unregister(&priv->t.host_attrs); |
0896b752 | 4851 | |
ee959b00 TJ |
4852 | sysfs_remove_group(&priv->dev.kobj, &iscsi_transport_group); |
4853 | device_unregister(&priv->dev); | |
0b950672 | 4854 | mutex_unlock(&rx_queue_mutex); |
1da177e4 | 4855 | |
0896b752 AA |
4856 | return 0; |
4857 | } | |
4858 | EXPORT_SYMBOL_GPL(iscsi_unregister_transport); | |
1da177e4 | 4859 | |
c2332b00 FH |
4860 | void iscsi_dbg_trace(void (*trace)(struct device *dev, struct va_format *), |
4861 | struct device *dev, const char *fmt, ...) | |
4862 | { | |
4863 | struct va_format vaf; | |
4864 | va_list args; | |
4865 | ||
4866 | va_start(args, fmt); | |
4867 | vaf.fmt = fmt; | |
4868 | vaf.va = &args; | |
4869 | trace(dev, &vaf); | |
4870 | va_end(args); | |
4871 | } | |
4872 | EXPORT_SYMBOL_GPL(iscsi_dbg_trace); | |
4873 | ||
1da177e4 LT |
4874 | static __init int iscsi_transport_init(void) |
4875 | { | |
0896b752 | 4876 | int err; |
a31f2d17 PNA |
4877 | struct netlink_kernel_cfg cfg = { |
4878 | .groups = 1, | |
4879 | .input = iscsi_if_rx, | |
4880 | }; | |
09492605 | 4881 | printk(KERN_INFO "Loading iSCSI transport class v%s.\n", |
f4246b33 MC |
4882 | ISCSI_TRANSPORT_VERSION); |
4883 | ||
41be1444 MC |
4884 | atomic_set(&iscsi_session_nr, 0); |
4885 | ||
0896b752 | 4886 | err = class_register(&iscsi_transport_class); |
1da177e4 LT |
4887 | if (err) |
4888 | return err; | |
0896b752 | 4889 | |
d82ff9be | 4890 | err = class_register(&iscsi_endpoint_class); |
0896b752 AA |
4891 | if (err) |
4892 | goto unregister_transport_class; | |
4893 | ||
8d07913d | 4894 | err = class_register(&iscsi_iface_class); |
d82ff9be MC |
4895 | if (err) |
4896 | goto unregister_endpoint_class; | |
4897 | ||
8d07913d MC |
4898 | err = transport_class_register(&iscsi_host_class); |
4899 | if (err) | |
4900 | goto unregister_iface_class; | |
4901 | ||
30a6c652 MC |
4902 | err = transport_class_register(&iscsi_connection_class); |
4903 | if (err) | |
4904 | goto unregister_host_class; | |
4905 | ||
0896b752 AA |
4906 | err = transport_class_register(&iscsi_session_class); |
4907 | if (err) | |
4908 | goto unregister_conn_class; | |
4909 | ||
c6a4bb2e AC |
4910 | err = bus_register(&iscsi_flashnode_bus); |
4911 | if (err) | |
4912 | goto unregister_session_class; | |
4913 | ||
9f00d977 | 4914 | nls = netlink_kernel_create(&init_net, NETLINK_ISCSI, &cfg); |
0896b752 AA |
4915 | if (!nls) { |
4916 | err = -ENOBUFS; | |
c6a4bb2e | 4917 | goto unregister_flashnode_bus; |
0896b752 AA |
4918 | } |
4919 | ||
3ce41966 BL |
4920 | iscsi_eh_timer_workq = alloc_workqueue("%s", |
4921 | WQ_SYSFS | __WQ_LEGACY | WQ_MEM_RECLAIM | WQ_UNBOUND, | |
1a982620 | 4922 | 1, "iscsi_eh"); |
bcab2ccd WY |
4923 | if (!iscsi_eh_timer_workq) { |
4924 | err = -ENOMEM; | |
d8bf541e | 4925 | goto release_nls; |
bcab2ccd | 4926 | } |
d8bf541e | 4927 | |
23d6fefb MC |
4928 | iscsi_conn_cleanup_workq = alloc_workqueue("%s", |
4929 | WQ_SYSFS | WQ_MEM_RECLAIM | WQ_UNBOUND, 0, | |
4930 | "iscsi_conn_cleanup"); | |
4931 | if (!iscsi_conn_cleanup_workq) { | |
4932 | err = -ENOMEM; | |
4933 | goto destroy_wq; | |
4934 | } | |
4935 | ||
43a145a3 | 4936 | return 0; |
0896b752 | 4937 | |
23d6fefb MC |
4938 | destroy_wq: |
4939 | destroy_workqueue(iscsi_eh_timer_workq); | |
d8bf541e | 4940 | release_nls: |
b7c6ba6e | 4941 | netlink_kernel_release(nls); |
c6a4bb2e AC |
4942 | unregister_flashnode_bus: |
4943 | bus_unregister(&iscsi_flashnode_bus); | |
0896b752 AA |
4944 | unregister_session_class: |
4945 | transport_class_unregister(&iscsi_session_class); | |
4946 | unregister_conn_class: | |
4947 | transport_class_unregister(&iscsi_connection_class); | |
30a6c652 MC |
4948 | unregister_host_class: |
4949 | transport_class_unregister(&iscsi_host_class); | |
8d07913d MC |
4950 | unregister_iface_class: |
4951 | class_unregister(&iscsi_iface_class); | |
d82ff9be MC |
4952 | unregister_endpoint_class: |
4953 | class_unregister(&iscsi_endpoint_class); | |
0896b752 AA |
4954 | unregister_transport_class: |
4955 | class_unregister(&iscsi_transport_class); | |
4956 | return err; | |
1da177e4 LT |
4957 | } |
4958 | ||
4959 | static void __exit iscsi_transport_exit(void) | |
4960 | { | |
23d6fefb | 4961 | destroy_workqueue(iscsi_conn_cleanup_workq); |
d8bf541e | 4962 | destroy_workqueue(iscsi_eh_timer_workq); |
b7c6ba6e | 4963 | netlink_kernel_release(nls); |
c6a4bb2e | 4964 | bus_unregister(&iscsi_flashnode_bus); |
0896b752 AA |
4965 | transport_class_unregister(&iscsi_connection_class); |
4966 | transport_class_unregister(&iscsi_session_class); | |
30a6c652 | 4967 | transport_class_unregister(&iscsi_host_class); |
d82ff9be | 4968 | class_unregister(&iscsi_endpoint_class); |
8d07913d | 4969 | class_unregister(&iscsi_iface_class); |
0896b752 | 4970 | class_unregister(&iscsi_transport_class); |
1da177e4 LT |
4971 | } |
4972 | ||
4973 | module_init(iscsi_transport_init); | |
4974 | module_exit(iscsi_transport_exit); | |
4975 | ||
0896b752 AA |
4976 | MODULE_AUTHOR("Mike Christie <michaelc@cs.wisc.edu>, " |
4977 | "Dmitry Yusupov <dmitry_yus@yahoo.com>, " | |
4978 | "Alex Aizman <itn780@yahoo.com>"); | |
4979 | MODULE_DESCRIPTION("iSCSI Transport Interface"); | |
1da177e4 | 4980 | MODULE_LICENSE("GPL"); |
f4246b33 | 4981 | MODULE_VERSION(ISCSI_TRANSPORT_VERSION); |
058548ae | 4982 | MODULE_ALIAS_NET_PF_PROTO(PF_NETLINK, NETLINK_ISCSI); |