Commit | Line | Data |
---|---|---|
0896b752 | 1 | /* |
1da177e4 LT |
2 | * iSCSI transport class definitions |
3 | * | |
4 | * Copyright (C) IBM Corporation, 2004 | |
0896b752 AA |
5 | * Copyright (C) Mike Christie, 2004 - 2005 |
6 | * Copyright (C) Dmitry Yusupov, 2004 - 2005 | |
7 | * Copyright (C) Alex Aizman, 2004 - 2005 | |
1da177e4 LT |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
22 | */ | |
23 | #include <linux/module.h> | |
0b950672 | 24 | #include <linux/mutex.h> |
5a0e3ad6 | 25 | #include <linux/slab.h> |
90eeb01a | 26 | #include <linux/bsg-lib.h> |
8d4a690c | 27 | #include <linux/idr.h> |
0896b752 | 28 | #include <net/tcp.h> |
1da177e4 LT |
29 | #include <scsi/scsi.h> |
30 | #include <scsi/scsi_host.h> | |
31 | #include <scsi/scsi_device.h> | |
32 | #include <scsi/scsi_transport.h> | |
33 | #include <scsi/scsi_transport_iscsi.h> | |
0896b752 | 34 | #include <scsi/iscsi_if.h> |
c01be6dc | 35 | #include <scsi/scsi_cmnd.h> |
90eeb01a | 36 | #include <scsi/scsi_bsg_iscsi.h> |
1da177e4 | 37 | |
4c2133c8 | 38 | #define ISCSI_TRANSPORT_VERSION "2.0-870" |
1da177e4 | 39 | |
632248aa MC |
40 | static int dbg_session; |
41 | module_param_named(debug_session, dbg_session, int, | |
42 | S_IRUGO | S_IWUSR); | |
43 | MODULE_PARM_DESC(debug_session, | |
44 | "Turn on debugging for sessions in scsi_transport_iscsi " | |
45 | "module. Set to 1 to turn on, and zero to turn off. Default " | |
46 | "is off."); | |
47 | ||
48 | static int dbg_conn; | |
49 | module_param_named(debug_conn, dbg_conn, int, | |
50 | S_IRUGO | S_IWUSR); | |
51 | MODULE_PARM_DESC(debug_conn, | |
52 | "Turn on debugging for connections in scsi_transport_iscsi " | |
53 | "module. Set to 1 to turn on, and zero to turn off. Default " | |
54 | "is off."); | |
55 | ||
56 | #define ISCSI_DBG_TRANS_SESSION(_session, dbg_fmt, arg...) \ | |
57 | do { \ | |
58 | if (dbg_session) \ | |
59 | iscsi_cls_session_printk(KERN_INFO, _session, \ | |
60 | "%s: " dbg_fmt, \ | |
61 | __func__, ##arg); \ | |
62 | } while (0); | |
63 | ||
64 | #define ISCSI_DBG_TRANS_CONN(_conn, dbg_fmt, arg...) \ | |
65 | do { \ | |
66 | if (dbg_conn) \ | |
67 | iscsi_cls_conn_printk(KERN_INFO, _conn, \ | |
68 | "%s: " dbg_fmt, \ | |
69 | __func__, ##arg); \ | |
70 | } while (0); | |
71 | ||
1da177e4 LT |
72 | struct iscsi_internal { |
73 | struct scsi_transport_template t; | |
0896b752 AA |
74 | struct iscsi_transport *iscsi_transport; |
75 | struct list_head list; | |
ee959b00 | 76 | struct device dev; |
30a6c652 | 77 | |
0896b752 | 78 | struct transport_container conn_cont; |
0896b752 | 79 | struct transport_container session_cont; |
1da177e4 LT |
80 | }; |
81 | ||
41be1444 | 82 | static atomic_t iscsi_session_nr; /* sysfs session id for next new session */ |
d8bf541e | 83 | static struct workqueue_struct *iscsi_eh_timer_workq; |
b5c7a12d | 84 | |
8d4a690c | 85 | static DEFINE_IDA(iscsi_sess_ida); |
0896b752 AA |
86 | /* |
87 | * list of registered transports and lock that must | |
88 | * be held while accessing list. The iscsi_transport_lock must | |
0b950672 | 89 | * be acquired after the rx_queue_mutex. |
0896b752 AA |
90 | */ |
91 | static LIST_HEAD(iscsi_transports); | |
92 | static DEFINE_SPINLOCK(iscsi_transport_lock); | |
93 | ||
94 | #define to_iscsi_internal(tmpl) \ | |
95 | container_of(tmpl, struct iscsi_internal, t) | |
96 | ||
ee959b00 TJ |
97 | #define dev_to_iscsi_internal(_dev) \ |
98 | container_of(_dev, struct iscsi_internal, dev) | |
0896b752 | 99 | |
ee959b00 | 100 | static void iscsi_transport_release(struct device *dev) |
0896b752 | 101 | { |
ee959b00 | 102 | struct iscsi_internal *priv = dev_to_iscsi_internal(dev); |
0896b752 AA |
103 | kfree(priv); |
104 | } | |
1da177e4 | 105 | |
0896b752 AA |
106 | /* |
107 | * iscsi_transport_class represents the iscsi_transports that are | |
108 | * registered. | |
109 | */ | |
110 | static struct class iscsi_transport_class = { | |
111 | .name = "iscsi_transport", | |
ee959b00 | 112 | .dev_release = iscsi_transport_release, |
0896b752 AA |
113 | }; |
114 | ||
115 | static ssize_t | |
ee959b00 TJ |
116 | show_transport_handle(struct device *dev, struct device_attribute *attr, |
117 | char *buf) | |
0896b752 | 118 | { |
ee959b00 | 119 | struct iscsi_internal *priv = dev_to_iscsi_internal(dev); |
762e2bfa | 120 | return sprintf(buf, "%llu\n", (unsigned long long)iscsi_handle(priv->iscsi_transport)); |
0896b752 | 121 | } |
ee959b00 | 122 | static DEVICE_ATTR(handle, S_IRUGO, show_transport_handle, NULL); |
0896b752 AA |
123 | |
124 | #define show_transport_attr(name, format) \ | |
125 | static ssize_t \ | |
ee959b00 TJ |
126 | show_transport_##name(struct device *dev, \ |
127 | struct device_attribute *attr,char *buf) \ | |
0896b752 | 128 | { \ |
ee959b00 | 129 | struct iscsi_internal *priv = dev_to_iscsi_internal(dev); \ |
0896b752 AA |
130 | return sprintf(buf, format"\n", priv->iscsi_transport->name); \ |
131 | } \ | |
ee959b00 | 132 | static DEVICE_ATTR(name, S_IRUGO, show_transport_##name, NULL); |
0896b752 AA |
133 | |
134 | show_transport_attr(caps, "0x%x"); | |
0896b752 AA |
135 | |
136 | static struct attribute *iscsi_transport_attrs[] = { | |
ee959b00 TJ |
137 | &dev_attr_handle.attr, |
138 | &dev_attr_caps.attr, | |
0896b752 AA |
139 | NULL, |
140 | }; | |
141 | ||
142 | static struct attribute_group iscsi_transport_group = { | |
143 | .attrs = iscsi_transport_attrs, | |
144 | }; | |
145 | ||
d82ff9be MC |
146 | /* |
147 | * iSCSI endpoint attrs | |
148 | */ | |
149 | #define iscsi_dev_to_endpoint(_dev) \ | |
150 | container_of(_dev, struct iscsi_endpoint, dev) | |
151 | ||
152 | #define ISCSI_ATTR(_prefix,_name,_mode,_show,_store) \ | |
153 | struct device_attribute dev_attr_##_prefix##_##_name = \ | |
154 | __ATTR(_name,_mode,_show,_store) | |
155 | ||
156 | static void iscsi_endpoint_release(struct device *dev) | |
157 | { | |
158 | struct iscsi_endpoint *ep = iscsi_dev_to_endpoint(dev); | |
159 | kfree(ep); | |
160 | } | |
161 | ||
162 | static struct class iscsi_endpoint_class = { | |
163 | .name = "iscsi_endpoint", | |
164 | .dev_release = iscsi_endpoint_release, | |
165 | }; | |
166 | ||
167 | static ssize_t | |
168 | show_ep_handle(struct device *dev, struct device_attribute *attr, char *buf) | |
169 | { | |
170 | struct iscsi_endpoint *ep = iscsi_dev_to_endpoint(dev); | |
21536062 | 171 | return sprintf(buf, "%llu\n", (unsigned long long) ep->id); |
d82ff9be MC |
172 | } |
173 | static ISCSI_ATTR(ep, handle, S_IRUGO, show_ep_handle, NULL); | |
174 | ||
175 | static struct attribute *iscsi_endpoint_attrs[] = { | |
176 | &dev_attr_ep_handle.attr, | |
177 | NULL, | |
178 | }; | |
179 | ||
180 | static struct attribute_group iscsi_endpoint_group = { | |
181 | .attrs = iscsi_endpoint_attrs, | |
182 | }; | |
183 | ||
184 | #define ISCSI_MAX_EPID -1 | |
185 | ||
9f3b795a | 186 | static int iscsi_match_epid(struct device *dev, const void *data) |
d82ff9be MC |
187 | { |
188 | struct iscsi_endpoint *ep = iscsi_dev_to_endpoint(dev); | |
9f3b795a | 189 | const uint64_t *epid = data; |
d82ff9be MC |
190 | |
191 | return *epid == ep->id; | |
192 | } | |
193 | ||
194 | struct iscsi_endpoint * | |
195 | iscsi_create_endpoint(int dd_size) | |
196 | { | |
197 | struct device *dev; | |
198 | struct iscsi_endpoint *ep; | |
21536062 | 199 | uint64_t id; |
d82ff9be MC |
200 | int err; |
201 | ||
202 | for (id = 1; id < ISCSI_MAX_EPID; id++) { | |
695794ae | 203 | dev = class_find_device(&iscsi_endpoint_class, NULL, &id, |
d82ff9be MC |
204 | iscsi_match_epid); |
205 | if (!dev) | |
206 | break; | |
4ce30874 SG |
207 | else |
208 | put_device(dev); | |
d82ff9be MC |
209 | } |
210 | if (id == ISCSI_MAX_EPID) { | |
211 | printk(KERN_ERR "Too many connections. Max supported %u\n", | |
212 | ISCSI_MAX_EPID - 1); | |
213 | return NULL; | |
214 | } | |
215 | ||
216 | ep = kzalloc(sizeof(*ep) + dd_size, GFP_KERNEL); | |
217 | if (!ep) | |
218 | return NULL; | |
219 | ||
220 | ep->id = id; | |
221 | ep->dev.class = &iscsi_endpoint_class; | |
71610f55 | 222 | dev_set_name(&ep->dev, "ep-%llu", (unsigned long long) id); |
d82ff9be MC |
223 | err = device_register(&ep->dev); |
224 | if (err) | |
225 | goto free_ep; | |
226 | ||
227 | err = sysfs_create_group(&ep->dev.kobj, &iscsi_endpoint_group); | |
228 | if (err) | |
229 | goto unregister_dev; | |
230 | ||
231 | if (dd_size) | |
232 | ep->dd_data = &ep[1]; | |
233 | return ep; | |
234 | ||
235 | unregister_dev: | |
236 | device_unregister(&ep->dev); | |
237 | return NULL; | |
238 | ||
239 | free_ep: | |
240 | kfree(ep); | |
241 | return NULL; | |
242 | } | |
243 | EXPORT_SYMBOL_GPL(iscsi_create_endpoint); | |
244 | ||
245 | void iscsi_destroy_endpoint(struct iscsi_endpoint *ep) | |
246 | { | |
247 | sysfs_remove_group(&ep->dev.kobj, &iscsi_endpoint_group); | |
248 | device_unregister(&ep->dev); | |
249 | } | |
250 | EXPORT_SYMBOL_GPL(iscsi_destroy_endpoint); | |
251 | ||
252 | struct iscsi_endpoint *iscsi_lookup_endpoint(u64 handle) | |
253 | { | |
f80f868e | 254 | struct iscsi_endpoint *ep; |
d82ff9be MC |
255 | struct device *dev; |
256 | ||
695794ae | 257 | dev = class_find_device(&iscsi_endpoint_class, NULL, &handle, |
d82ff9be MC |
258 | iscsi_match_epid); |
259 | if (!dev) | |
260 | return NULL; | |
261 | ||
f80f868e MC |
262 | ep = iscsi_dev_to_endpoint(dev); |
263 | /* | |
264 | * we can drop this now because the interface will prevent | |
265 | * removals and lookups from racing. | |
266 | */ | |
267 | put_device(dev); | |
268 | return ep; | |
d82ff9be MC |
269 | } |
270 | EXPORT_SYMBOL_GPL(iscsi_lookup_endpoint); | |
271 | ||
8d07913d MC |
272 | /* |
273 | * Interface to display network param to sysfs | |
274 | */ | |
275 | ||
276 | static void iscsi_iface_release(struct device *dev) | |
277 | { | |
278 | struct iscsi_iface *iface = iscsi_dev_to_iface(dev); | |
279 | struct device *parent = iface->dev.parent; | |
280 | ||
281 | kfree(iface); | |
282 | put_device(parent); | |
283 | } | |
284 | ||
285 | ||
286 | static struct class iscsi_iface_class = { | |
287 | .name = "iscsi_iface", | |
288 | .dev_release = iscsi_iface_release, | |
289 | }; | |
290 | ||
291 | #define ISCSI_IFACE_ATTR(_prefix, _name, _mode, _show, _store) \ | |
292 | struct device_attribute dev_attr_##_prefix##_##_name = \ | |
293 | __ATTR(_name, _mode, _show, _store) | |
294 | ||
295 | /* iface attrs show */ | |
296 | #define iscsi_iface_attr_show(type, name, param_type, param) \ | |
297 | static ssize_t \ | |
298 | show_##type##_##name(struct device *dev, struct device_attribute *attr, \ | |
299 | char *buf) \ | |
300 | { \ | |
301 | struct iscsi_iface *iface = iscsi_dev_to_iface(dev); \ | |
302 | struct iscsi_transport *t = iface->transport; \ | |
303 | return t->get_iface_param(iface, param_type, param, buf); \ | |
304 | } \ | |
305 | ||
306 | #define iscsi_iface_net_attr(type, name, param) \ | |
307 | iscsi_iface_attr_show(type, name, ISCSI_NET_PARAM, param) \ | |
308 | static ISCSI_IFACE_ATTR(type, name, S_IRUGO, show_##type##_##name, NULL); | |
309 | ||
3e0f65b3 HZ |
310 | #define iscsi_iface_attr(type, name, param) \ |
311 | iscsi_iface_attr_show(type, name, ISCSI_IFACE_PARAM, param) \ | |
312 | static ISCSI_IFACE_ATTR(type, name, S_IRUGO, show_##type##_##name, NULL); | |
313 | ||
314 | /* generic read only ipv4 attribute */ | |
8d07913d MC |
315 | iscsi_iface_net_attr(ipv4_iface, ipaddress, ISCSI_NET_PARAM_IPV4_ADDR); |
316 | iscsi_iface_net_attr(ipv4_iface, gateway, ISCSI_NET_PARAM_IPV4_GW); | |
317 | iscsi_iface_net_attr(ipv4_iface, subnet, ISCSI_NET_PARAM_IPV4_SUBNET); | |
318 | iscsi_iface_net_attr(ipv4_iface, bootproto, ISCSI_NET_PARAM_IPV4_BOOTPROTO); | |
3e0f65b3 HZ |
319 | iscsi_iface_net_attr(ipv4_iface, dhcp_dns_address_en, |
320 | ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN); | |
321 | iscsi_iface_net_attr(ipv4_iface, dhcp_slp_da_info_en, | |
322 | ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN); | |
323 | iscsi_iface_net_attr(ipv4_iface, tos_en, ISCSI_NET_PARAM_IPV4_TOS_EN); | |
324 | iscsi_iface_net_attr(ipv4_iface, tos, ISCSI_NET_PARAM_IPV4_TOS); | |
325 | iscsi_iface_net_attr(ipv4_iface, grat_arp_en, | |
326 | ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN); | |
327 | iscsi_iface_net_attr(ipv4_iface, dhcp_alt_client_id_en, | |
328 | ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN); | |
329 | iscsi_iface_net_attr(ipv4_iface, dhcp_alt_client_id, | |
330 | ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID); | |
331 | iscsi_iface_net_attr(ipv4_iface, dhcp_req_vendor_id_en, | |
332 | ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN); | |
333 | iscsi_iface_net_attr(ipv4_iface, dhcp_use_vendor_id_en, | |
334 | ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN); | |
335 | iscsi_iface_net_attr(ipv4_iface, dhcp_vendor_id, | |
336 | ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID); | |
337 | iscsi_iface_net_attr(ipv4_iface, dhcp_learn_iqn_en, | |
338 | ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN); | |
339 | iscsi_iface_net_attr(ipv4_iface, fragment_disable, | |
340 | ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE); | |
341 | iscsi_iface_net_attr(ipv4_iface, incoming_forwarding_en, | |
342 | ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN); | |
343 | iscsi_iface_net_attr(ipv4_iface, ttl, ISCSI_NET_PARAM_IPV4_TTL); | |
8d07913d MC |
344 | |
345 | /* generic read only ipv6 attribute */ | |
346 | iscsi_iface_net_attr(ipv6_iface, ipaddress, ISCSI_NET_PARAM_IPV6_ADDR); | |
3e0f65b3 HZ |
347 | iscsi_iface_net_attr(ipv6_iface, link_local_addr, |
348 | ISCSI_NET_PARAM_IPV6_LINKLOCAL); | |
8d07913d MC |
349 | iscsi_iface_net_attr(ipv6_iface, router_addr, ISCSI_NET_PARAM_IPV6_ROUTER); |
350 | iscsi_iface_net_attr(ipv6_iface, ipaddr_autocfg, | |
351 | ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG); | |
88f4f517 | 352 | iscsi_iface_net_attr(ipv6_iface, link_local_autocfg, |
8d07913d | 353 | ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG); |
3e0f65b3 HZ |
354 | iscsi_iface_net_attr(ipv6_iface, link_local_state, |
355 | ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE); | |
356 | iscsi_iface_net_attr(ipv6_iface, router_state, | |
357 | ISCSI_NET_PARAM_IPV6_ROUTER_STATE); | |
358 | iscsi_iface_net_attr(ipv6_iface, grat_neighbor_adv_en, | |
359 | ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN); | |
360 | iscsi_iface_net_attr(ipv6_iface, mld_en, ISCSI_NET_PARAM_IPV6_MLD_EN); | |
361 | iscsi_iface_net_attr(ipv6_iface, flow_label, ISCSI_NET_PARAM_IPV6_FLOW_LABEL); | |
362 | iscsi_iface_net_attr(ipv6_iface, traffic_class, | |
363 | ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS); | |
364 | iscsi_iface_net_attr(ipv6_iface, hop_limit, ISCSI_NET_PARAM_IPV6_HOP_LIMIT); | |
365 | iscsi_iface_net_attr(ipv6_iface, nd_reachable_tmo, | |
366 | ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO); | |
367 | iscsi_iface_net_attr(ipv6_iface, nd_rexmit_time, | |
368 | ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME); | |
369 | iscsi_iface_net_attr(ipv6_iface, nd_stale_tmo, | |
370 | ISCSI_NET_PARAM_IPV6_ND_STALE_TMO); | |
371 | iscsi_iface_net_attr(ipv6_iface, dup_addr_detect_cnt, | |
372 | ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT); | |
373 | iscsi_iface_net_attr(ipv6_iface, router_adv_link_mtu, | |
374 | ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU); | |
8d07913d MC |
375 | |
376 | /* common read only iface attribute */ | |
377 | iscsi_iface_net_attr(iface, enabled, ISCSI_NET_PARAM_IFACE_ENABLE); | |
2d63673b | 378 | iscsi_iface_net_attr(iface, vlan_id, ISCSI_NET_PARAM_VLAN_ID); |
4223b9e9 MC |
379 | iscsi_iface_net_attr(iface, vlan_priority, ISCSI_NET_PARAM_VLAN_PRIORITY); |
380 | iscsi_iface_net_attr(iface, vlan_enabled, ISCSI_NET_PARAM_VLAN_ENABLED); | |
8c7d40fb | 381 | iscsi_iface_net_attr(iface, mtu, ISCSI_NET_PARAM_MTU); |
fcb5124e | 382 | iscsi_iface_net_attr(iface, port, ISCSI_NET_PARAM_PORT); |
3e0f65b3 HZ |
383 | iscsi_iface_net_attr(iface, ipaddress_state, ISCSI_NET_PARAM_IPADDR_STATE); |
384 | iscsi_iface_net_attr(iface, delayed_ack_en, ISCSI_NET_PARAM_DELAYED_ACK_EN); | |
385 | iscsi_iface_net_attr(iface, tcp_nagle_disable, | |
386 | ISCSI_NET_PARAM_TCP_NAGLE_DISABLE); | |
387 | iscsi_iface_net_attr(iface, tcp_wsf_disable, ISCSI_NET_PARAM_TCP_WSF_DISABLE); | |
388 | iscsi_iface_net_attr(iface, tcp_wsf, ISCSI_NET_PARAM_TCP_WSF); | |
389 | iscsi_iface_net_attr(iface, tcp_timer_scale, ISCSI_NET_PARAM_TCP_TIMER_SCALE); | |
390 | iscsi_iface_net_attr(iface, tcp_timestamp_en, ISCSI_NET_PARAM_TCP_TIMESTAMP_EN); | |
391 | iscsi_iface_net_attr(iface, cache_id, ISCSI_NET_PARAM_CACHE_ID); | |
392 | iscsi_iface_net_attr(iface, redirect_en, ISCSI_NET_PARAM_REDIRECT_EN); | |
393 | ||
394 | /* common iscsi specific settings attributes */ | |
395 | iscsi_iface_attr(iface, def_taskmgmt_tmo, ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO); | |
396 | iscsi_iface_attr(iface, header_digest, ISCSI_IFACE_PARAM_HDRDGST_EN); | |
397 | iscsi_iface_attr(iface, data_digest, ISCSI_IFACE_PARAM_DATADGST_EN); | |
398 | iscsi_iface_attr(iface, immediate_data, ISCSI_IFACE_PARAM_IMM_DATA_EN); | |
399 | iscsi_iface_attr(iface, initial_r2t, ISCSI_IFACE_PARAM_INITIAL_R2T_EN); | |
400 | iscsi_iface_attr(iface, data_seq_in_order, | |
401 | ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN); | |
402 | iscsi_iface_attr(iface, data_pdu_in_order, ISCSI_IFACE_PARAM_PDU_INORDER_EN); | |
403 | iscsi_iface_attr(iface, erl, ISCSI_IFACE_PARAM_ERL); | |
404 | iscsi_iface_attr(iface, max_recv_dlength, ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH); | |
405 | iscsi_iface_attr(iface, first_burst_len, ISCSI_IFACE_PARAM_FIRST_BURST); | |
406 | iscsi_iface_attr(iface, max_outstanding_r2t, ISCSI_IFACE_PARAM_MAX_R2T); | |
407 | iscsi_iface_attr(iface, max_burst_len, ISCSI_IFACE_PARAM_MAX_BURST); | |
408 | iscsi_iface_attr(iface, chap_auth, ISCSI_IFACE_PARAM_CHAP_AUTH_EN); | |
409 | iscsi_iface_attr(iface, bidi_chap, ISCSI_IFACE_PARAM_BIDI_CHAP_EN); | |
410 | iscsi_iface_attr(iface, discovery_auth_optional, | |
411 | ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL); | |
412 | iscsi_iface_attr(iface, discovery_logout, | |
413 | ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN); | |
414 | iscsi_iface_attr(iface, strict_login_comp_en, | |
415 | ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN); | |
416 | iscsi_iface_attr(iface, initiator_name, ISCSI_IFACE_PARAM_INITIATOR_NAME); | |
8d07913d | 417 | |
587a1f16 | 418 | static umode_t iscsi_iface_attr_is_visible(struct kobject *kobj, |
8d07913d MC |
419 | struct attribute *attr, int i) |
420 | { | |
421 | struct device *dev = container_of(kobj, struct device, kobj); | |
422 | struct iscsi_iface *iface = iscsi_dev_to_iface(dev); | |
423 | struct iscsi_transport *t = iface->transport; | |
b78dbba0 | 424 | int param; |
3e0f65b3 | 425 | int param_type; |
8d07913d MC |
426 | |
427 | if (attr == &dev_attr_iface_enabled.attr) | |
b78dbba0 | 428 | param = ISCSI_NET_PARAM_IFACE_ENABLE; |
2d63673b | 429 | else if (attr == &dev_attr_iface_vlan_id.attr) |
b78dbba0 | 430 | param = ISCSI_NET_PARAM_VLAN_ID; |
4223b9e9 MC |
431 | else if (attr == &dev_attr_iface_vlan_priority.attr) |
432 | param = ISCSI_NET_PARAM_VLAN_PRIORITY; | |
433 | else if (attr == &dev_attr_iface_vlan_enabled.attr) | |
434 | param = ISCSI_NET_PARAM_VLAN_ENABLED; | |
8c7d40fb VC |
435 | else if (attr == &dev_attr_iface_mtu.attr) |
436 | param = ISCSI_NET_PARAM_MTU; | |
fcb5124e VC |
437 | else if (attr == &dev_attr_iface_port.attr) |
438 | param = ISCSI_NET_PARAM_PORT; | |
3e0f65b3 HZ |
439 | else if (attr == &dev_attr_iface_ipaddress_state.attr) |
440 | param = ISCSI_NET_PARAM_IPADDR_STATE; | |
441 | else if (attr == &dev_attr_iface_delayed_ack_en.attr) | |
442 | param = ISCSI_NET_PARAM_DELAYED_ACK_EN; | |
443 | else if (attr == &dev_attr_iface_tcp_nagle_disable.attr) | |
444 | param = ISCSI_NET_PARAM_TCP_NAGLE_DISABLE; | |
445 | else if (attr == &dev_attr_iface_tcp_wsf_disable.attr) | |
446 | param = ISCSI_NET_PARAM_TCP_WSF_DISABLE; | |
447 | else if (attr == &dev_attr_iface_tcp_wsf.attr) | |
448 | param = ISCSI_NET_PARAM_TCP_WSF; | |
449 | else if (attr == &dev_attr_iface_tcp_timer_scale.attr) | |
450 | param = ISCSI_NET_PARAM_TCP_TIMER_SCALE; | |
451 | else if (attr == &dev_attr_iface_tcp_timestamp_en.attr) | |
452 | param = ISCSI_NET_PARAM_TCP_TIMESTAMP_EN; | |
453 | else if (attr == &dev_attr_iface_cache_id.attr) | |
454 | param = ISCSI_NET_PARAM_CACHE_ID; | |
455 | else if (attr == &dev_attr_iface_redirect_en.attr) | |
456 | param = ISCSI_NET_PARAM_REDIRECT_EN; | |
457 | else if (attr == &dev_attr_iface_def_taskmgmt_tmo.attr) | |
458 | param = ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO; | |
459 | else if (attr == &dev_attr_iface_header_digest.attr) | |
460 | param = ISCSI_IFACE_PARAM_HDRDGST_EN; | |
461 | else if (attr == &dev_attr_iface_data_digest.attr) | |
462 | param = ISCSI_IFACE_PARAM_DATADGST_EN; | |
463 | else if (attr == &dev_attr_iface_immediate_data.attr) | |
464 | param = ISCSI_IFACE_PARAM_IMM_DATA_EN; | |
465 | else if (attr == &dev_attr_iface_initial_r2t.attr) | |
466 | param = ISCSI_IFACE_PARAM_INITIAL_R2T_EN; | |
467 | else if (attr == &dev_attr_iface_data_seq_in_order.attr) | |
468 | param = ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN; | |
469 | else if (attr == &dev_attr_iface_data_pdu_in_order.attr) | |
470 | param = ISCSI_IFACE_PARAM_PDU_INORDER_EN; | |
471 | else if (attr == &dev_attr_iface_erl.attr) | |
472 | param = ISCSI_IFACE_PARAM_ERL; | |
473 | else if (attr == &dev_attr_iface_max_recv_dlength.attr) | |
474 | param = ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH; | |
475 | else if (attr == &dev_attr_iface_first_burst_len.attr) | |
476 | param = ISCSI_IFACE_PARAM_FIRST_BURST; | |
477 | else if (attr == &dev_attr_iface_max_outstanding_r2t.attr) | |
478 | param = ISCSI_IFACE_PARAM_MAX_R2T; | |
479 | else if (attr == &dev_attr_iface_max_burst_len.attr) | |
480 | param = ISCSI_IFACE_PARAM_MAX_BURST; | |
481 | else if (attr == &dev_attr_iface_chap_auth.attr) | |
482 | param = ISCSI_IFACE_PARAM_CHAP_AUTH_EN; | |
483 | else if (attr == &dev_attr_iface_bidi_chap.attr) | |
484 | param = ISCSI_IFACE_PARAM_BIDI_CHAP_EN; | |
485 | else if (attr == &dev_attr_iface_discovery_auth_optional.attr) | |
486 | param = ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL; | |
487 | else if (attr == &dev_attr_iface_discovery_logout.attr) | |
488 | param = ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN; | |
489 | else if (attr == &dev_attr_iface_strict_login_comp_en.attr) | |
490 | param = ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN; | |
491 | else if (attr == &dev_attr_iface_initiator_name.attr) | |
492 | param = ISCSI_IFACE_PARAM_INITIATOR_NAME; | |
b78dbba0 | 493 | else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) { |
8d07913d | 494 | if (attr == &dev_attr_ipv4_iface_ipaddress.attr) |
b78dbba0 | 495 | param = ISCSI_NET_PARAM_IPV4_ADDR; |
8d07913d | 496 | else if (attr == &dev_attr_ipv4_iface_gateway.attr) |
b78dbba0 | 497 | param = ISCSI_NET_PARAM_IPV4_GW; |
8d07913d | 498 | else if (attr == &dev_attr_ipv4_iface_subnet.attr) |
b78dbba0 | 499 | param = ISCSI_NET_PARAM_IPV4_SUBNET; |
8d07913d | 500 | else if (attr == &dev_attr_ipv4_iface_bootproto.attr) |
b78dbba0 | 501 | param = ISCSI_NET_PARAM_IPV4_BOOTPROTO; |
3e0f65b3 HZ |
502 | else if (attr == |
503 | &dev_attr_ipv4_iface_dhcp_dns_address_en.attr) | |
504 | param = ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN; | |
505 | else if (attr == | |
506 | &dev_attr_ipv4_iface_dhcp_slp_da_info_en.attr) | |
507 | param = ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN; | |
508 | else if (attr == &dev_attr_ipv4_iface_tos_en.attr) | |
509 | param = ISCSI_NET_PARAM_IPV4_TOS_EN; | |
510 | else if (attr == &dev_attr_ipv4_iface_tos.attr) | |
511 | param = ISCSI_NET_PARAM_IPV4_TOS; | |
512 | else if (attr == &dev_attr_ipv4_iface_grat_arp_en.attr) | |
513 | param = ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN; | |
514 | else if (attr == | |
515 | &dev_attr_ipv4_iface_dhcp_alt_client_id_en.attr) | |
516 | param = ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN; | |
517 | else if (attr == &dev_attr_ipv4_iface_dhcp_alt_client_id.attr) | |
518 | param = ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID; | |
519 | else if (attr == | |
520 | &dev_attr_ipv4_iface_dhcp_req_vendor_id_en.attr) | |
521 | param = ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN; | |
522 | else if (attr == | |
523 | &dev_attr_ipv4_iface_dhcp_use_vendor_id_en.attr) | |
524 | param = ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN; | |
525 | else if (attr == &dev_attr_ipv4_iface_dhcp_vendor_id.attr) | |
526 | param = ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID; | |
527 | else if (attr == | |
528 | &dev_attr_ipv4_iface_dhcp_learn_iqn_en.attr) | |
529 | param = ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN; | |
530 | else if (attr == | |
531 | &dev_attr_ipv4_iface_fragment_disable.attr) | |
532 | param = ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE; | |
533 | else if (attr == | |
534 | &dev_attr_ipv4_iface_incoming_forwarding_en.attr) | |
535 | param = ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN; | |
536 | else if (attr == &dev_attr_ipv4_iface_ttl.attr) | |
537 | param = ISCSI_NET_PARAM_IPV4_TTL; | |
b78dbba0 MC |
538 | else |
539 | return 0; | |
8d07913d MC |
540 | } else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6) { |
541 | if (attr == &dev_attr_ipv6_iface_ipaddress.attr) | |
b78dbba0 | 542 | param = ISCSI_NET_PARAM_IPV6_ADDR; |
8d07913d | 543 | else if (attr == &dev_attr_ipv6_iface_link_local_addr.attr) |
b78dbba0 | 544 | param = ISCSI_NET_PARAM_IPV6_LINKLOCAL; |
8d07913d | 545 | else if (attr == &dev_attr_ipv6_iface_router_addr.attr) |
b78dbba0 | 546 | param = ISCSI_NET_PARAM_IPV6_ROUTER; |
8d07913d | 547 | else if (attr == &dev_attr_ipv6_iface_ipaddr_autocfg.attr) |
b78dbba0 | 548 | param = ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG; |
88f4f517 | 549 | else if (attr == &dev_attr_ipv6_iface_link_local_autocfg.attr) |
b78dbba0 | 550 | param = ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG; |
3e0f65b3 HZ |
551 | else if (attr == &dev_attr_ipv6_iface_link_local_state.attr) |
552 | param = ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE; | |
553 | else if (attr == &dev_attr_ipv6_iface_router_state.attr) | |
554 | param = ISCSI_NET_PARAM_IPV6_ROUTER_STATE; | |
555 | else if (attr == | |
556 | &dev_attr_ipv6_iface_grat_neighbor_adv_en.attr) | |
557 | param = ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN; | |
558 | else if (attr == &dev_attr_ipv6_iface_mld_en.attr) | |
559 | param = ISCSI_NET_PARAM_IPV6_MLD_EN; | |
560 | else if (attr == &dev_attr_ipv6_iface_flow_label.attr) | |
561 | param = ISCSI_NET_PARAM_IPV6_FLOW_LABEL; | |
562 | else if (attr == &dev_attr_ipv6_iface_traffic_class.attr) | |
563 | param = ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS; | |
564 | else if (attr == &dev_attr_ipv6_iface_hop_limit.attr) | |
565 | param = ISCSI_NET_PARAM_IPV6_HOP_LIMIT; | |
566 | else if (attr == &dev_attr_ipv6_iface_nd_reachable_tmo.attr) | |
567 | param = ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO; | |
568 | else if (attr == &dev_attr_ipv6_iface_nd_rexmit_time.attr) | |
569 | param = ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME; | |
570 | else if (attr == &dev_attr_ipv6_iface_nd_stale_tmo.attr) | |
571 | param = ISCSI_NET_PARAM_IPV6_ND_STALE_TMO; | |
572 | else if (attr == &dev_attr_ipv6_iface_dup_addr_detect_cnt.attr) | |
573 | param = ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT; | |
574 | else if (attr == &dev_attr_ipv6_iface_router_adv_link_mtu.attr) | |
575 | param = ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU; | |
b78dbba0 MC |
576 | else |
577 | return 0; | |
578 | } else { | |
579 | WARN_ONCE(1, "Invalid iface attr"); | |
580 | return 0; | |
8d07913d MC |
581 | } |
582 | ||
3e0f65b3 HZ |
583 | switch (param) { |
584 | case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO: | |
585 | case ISCSI_IFACE_PARAM_HDRDGST_EN: | |
586 | case ISCSI_IFACE_PARAM_DATADGST_EN: | |
587 | case ISCSI_IFACE_PARAM_IMM_DATA_EN: | |
588 | case ISCSI_IFACE_PARAM_INITIAL_R2T_EN: | |
589 | case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN: | |
590 | case ISCSI_IFACE_PARAM_PDU_INORDER_EN: | |
591 | case ISCSI_IFACE_PARAM_ERL: | |
592 | case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH: | |
593 | case ISCSI_IFACE_PARAM_FIRST_BURST: | |
594 | case ISCSI_IFACE_PARAM_MAX_R2T: | |
595 | case ISCSI_IFACE_PARAM_MAX_BURST: | |
596 | case ISCSI_IFACE_PARAM_CHAP_AUTH_EN: | |
597 | case ISCSI_IFACE_PARAM_BIDI_CHAP_EN: | |
598 | case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL: | |
599 | case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN: | |
600 | case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN: | |
601 | case ISCSI_IFACE_PARAM_INITIATOR_NAME: | |
602 | param_type = ISCSI_IFACE_PARAM; | |
603 | break; | |
604 | default: | |
605 | param_type = ISCSI_NET_PARAM; | |
606 | } | |
607 | ||
608 | return t->attr_is_visible(param_type, param); | |
8d07913d MC |
609 | } |
610 | ||
611 | static struct attribute *iscsi_iface_attrs[] = { | |
612 | &dev_attr_iface_enabled.attr, | |
2d63673b | 613 | &dev_attr_iface_vlan_id.attr, |
4223b9e9 MC |
614 | &dev_attr_iface_vlan_priority.attr, |
615 | &dev_attr_iface_vlan_enabled.attr, | |
8d07913d MC |
616 | &dev_attr_ipv4_iface_ipaddress.attr, |
617 | &dev_attr_ipv4_iface_gateway.attr, | |
618 | &dev_attr_ipv4_iface_subnet.attr, | |
619 | &dev_attr_ipv4_iface_bootproto.attr, | |
620 | &dev_attr_ipv6_iface_ipaddress.attr, | |
621 | &dev_attr_ipv6_iface_link_local_addr.attr, | |
622 | &dev_attr_ipv6_iface_router_addr.attr, | |
623 | &dev_attr_ipv6_iface_ipaddr_autocfg.attr, | |
88f4f517 | 624 | &dev_attr_ipv6_iface_link_local_autocfg.attr, |
8c7d40fb | 625 | &dev_attr_iface_mtu.attr, |
fcb5124e | 626 | &dev_attr_iface_port.attr, |
3e0f65b3 HZ |
627 | &dev_attr_iface_ipaddress_state.attr, |
628 | &dev_attr_iface_delayed_ack_en.attr, | |
629 | &dev_attr_iface_tcp_nagle_disable.attr, | |
630 | &dev_attr_iface_tcp_wsf_disable.attr, | |
631 | &dev_attr_iface_tcp_wsf.attr, | |
632 | &dev_attr_iface_tcp_timer_scale.attr, | |
633 | &dev_attr_iface_tcp_timestamp_en.attr, | |
634 | &dev_attr_iface_cache_id.attr, | |
635 | &dev_attr_iface_redirect_en.attr, | |
636 | &dev_attr_iface_def_taskmgmt_tmo.attr, | |
637 | &dev_attr_iface_header_digest.attr, | |
638 | &dev_attr_iface_data_digest.attr, | |
639 | &dev_attr_iface_immediate_data.attr, | |
640 | &dev_attr_iface_initial_r2t.attr, | |
641 | &dev_attr_iface_data_seq_in_order.attr, | |
642 | &dev_attr_iface_data_pdu_in_order.attr, | |
643 | &dev_attr_iface_erl.attr, | |
644 | &dev_attr_iface_max_recv_dlength.attr, | |
645 | &dev_attr_iface_first_burst_len.attr, | |
646 | &dev_attr_iface_max_outstanding_r2t.attr, | |
647 | &dev_attr_iface_max_burst_len.attr, | |
648 | &dev_attr_iface_chap_auth.attr, | |
649 | &dev_attr_iface_bidi_chap.attr, | |
650 | &dev_attr_iface_discovery_auth_optional.attr, | |
651 | &dev_attr_iface_discovery_logout.attr, | |
652 | &dev_attr_iface_strict_login_comp_en.attr, | |
653 | &dev_attr_iface_initiator_name.attr, | |
654 | &dev_attr_ipv4_iface_dhcp_dns_address_en.attr, | |
655 | &dev_attr_ipv4_iface_dhcp_slp_da_info_en.attr, | |
656 | &dev_attr_ipv4_iface_tos_en.attr, | |
657 | &dev_attr_ipv4_iface_tos.attr, | |
658 | &dev_attr_ipv4_iface_grat_arp_en.attr, | |
659 | &dev_attr_ipv4_iface_dhcp_alt_client_id_en.attr, | |
660 | &dev_attr_ipv4_iface_dhcp_alt_client_id.attr, | |
661 | &dev_attr_ipv4_iface_dhcp_req_vendor_id_en.attr, | |
662 | &dev_attr_ipv4_iface_dhcp_use_vendor_id_en.attr, | |
663 | &dev_attr_ipv4_iface_dhcp_vendor_id.attr, | |
664 | &dev_attr_ipv4_iface_dhcp_learn_iqn_en.attr, | |
665 | &dev_attr_ipv4_iface_fragment_disable.attr, | |
666 | &dev_attr_ipv4_iface_incoming_forwarding_en.attr, | |
667 | &dev_attr_ipv4_iface_ttl.attr, | |
668 | &dev_attr_ipv6_iface_link_local_state.attr, | |
669 | &dev_attr_ipv6_iface_router_state.attr, | |
670 | &dev_attr_ipv6_iface_grat_neighbor_adv_en.attr, | |
671 | &dev_attr_ipv6_iface_mld_en.attr, | |
672 | &dev_attr_ipv6_iface_flow_label.attr, | |
673 | &dev_attr_ipv6_iface_traffic_class.attr, | |
674 | &dev_attr_ipv6_iface_hop_limit.attr, | |
675 | &dev_attr_ipv6_iface_nd_reachable_tmo.attr, | |
676 | &dev_attr_ipv6_iface_nd_rexmit_time.attr, | |
677 | &dev_attr_ipv6_iface_nd_stale_tmo.attr, | |
678 | &dev_attr_ipv6_iface_dup_addr_detect_cnt.attr, | |
679 | &dev_attr_ipv6_iface_router_adv_link_mtu.attr, | |
8d07913d MC |
680 | NULL, |
681 | }; | |
682 | ||
683 | static struct attribute_group iscsi_iface_group = { | |
684 | .attrs = iscsi_iface_attrs, | |
685 | .is_visible = iscsi_iface_attr_is_visible, | |
686 | }; | |
687 | ||
3e0f65b3 HZ |
688 | /* convert iscsi_ipaddress_state values to ascii string name */ |
689 | static const struct { | |
690 | enum iscsi_ipaddress_state value; | |
691 | char *name; | |
692 | } iscsi_ipaddress_state_names[] = { | |
693 | {ISCSI_IPDDRESS_STATE_UNCONFIGURED, "Unconfigured" }, | |
694 | {ISCSI_IPDDRESS_STATE_ACQUIRING, "Acquiring" }, | |
695 | {ISCSI_IPDDRESS_STATE_TENTATIVE, "Tentative" }, | |
696 | {ISCSI_IPDDRESS_STATE_VALID, "Valid" }, | |
697 | {ISCSI_IPDDRESS_STATE_DISABLING, "Disabling" }, | |
698 | {ISCSI_IPDDRESS_STATE_INVALID, "Invalid" }, | |
699 | {ISCSI_IPDDRESS_STATE_DEPRECATED, "Deprecated" }, | |
700 | }; | |
701 | ||
702 | char *iscsi_get_ipaddress_state_name(enum iscsi_ipaddress_state port_state) | |
703 | { | |
704 | int i; | |
705 | char *state = NULL; | |
706 | ||
707 | for (i = 0; i < ARRAY_SIZE(iscsi_ipaddress_state_names); i++) { | |
708 | if (iscsi_ipaddress_state_names[i].value == port_state) { | |
709 | state = iscsi_ipaddress_state_names[i].name; | |
710 | break; | |
711 | } | |
712 | } | |
713 | return state; | |
714 | } | |
715 | EXPORT_SYMBOL_GPL(iscsi_get_ipaddress_state_name); | |
716 | ||
717 | /* convert iscsi_router_state values to ascii string name */ | |
718 | static const struct { | |
719 | enum iscsi_router_state value; | |
720 | char *name; | |
721 | } iscsi_router_state_names[] = { | |
722 | {ISCSI_ROUTER_STATE_UNKNOWN, "Unknown" }, | |
723 | {ISCSI_ROUTER_STATE_ADVERTISED, "Advertised" }, | |
724 | {ISCSI_ROUTER_STATE_MANUAL, "Manual" }, | |
725 | {ISCSI_ROUTER_STATE_STALE, "Stale" }, | |
726 | }; | |
727 | ||
728 | char *iscsi_get_router_state_name(enum iscsi_router_state router_state) | |
729 | { | |
730 | int i; | |
731 | char *state = NULL; | |
732 | ||
733 | for (i = 0; i < ARRAY_SIZE(iscsi_router_state_names); i++) { | |
734 | if (iscsi_router_state_names[i].value == router_state) { | |
735 | state = iscsi_router_state_names[i].name; | |
736 | break; | |
737 | } | |
738 | } | |
739 | return state; | |
740 | } | |
741 | EXPORT_SYMBOL_GPL(iscsi_get_router_state_name); | |
742 | ||
8d07913d MC |
743 | struct iscsi_iface * |
744 | iscsi_create_iface(struct Scsi_Host *shost, struct iscsi_transport *transport, | |
745 | uint32_t iface_type, uint32_t iface_num, int dd_size) | |
746 | { | |
747 | struct iscsi_iface *iface; | |
748 | int err; | |
749 | ||
750 | iface = kzalloc(sizeof(*iface) + dd_size, GFP_KERNEL); | |
751 | if (!iface) | |
752 | return NULL; | |
753 | ||
754 | iface->transport = transport; | |
755 | iface->iface_type = iface_type; | |
756 | iface->iface_num = iface_num; | |
757 | iface->dev.release = iscsi_iface_release; | |
758 | iface->dev.class = &iscsi_iface_class; | |
759 | /* parent reference released in iscsi_iface_release */ | |
760 | iface->dev.parent = get_device(&shost->shost_gendev); | |
761 | if (iface_type == ISCSI_IFACE_TYPE_IPV4) | |
762 | dev_set_name(&iface->dev, "ipv4-iface-%u-%u", shost->host_no, | |
763 | iface_num); | |
764 | else | |
765 | dev_set_name(&iface->dev, "ipv6-iface-%u-%u", shost->host_no, | |
766 | iface_num); | |
767 | ||
768 | err = device_register(&iface->dev); | |
769 | if (err) | |
770 | goto free_iface; | |
771 | ||
772 | err = sysfs_create_group(&iface->dev.kobj, &iscsi_iface_group); | |
773 | if (err) | |
774 | goto unreg_iface; | |
775 | ||
776 | if (dd_size) | |
777 | iface->dd_data = &iface[1]; | |
778 | return iface; | |
779 | ||
780 | unreg_iface: | |
781 | device_unregister(&iface->dev); | |
782 | return NULL; | |
783 | ||
784 | free_iface: | |
785 | put_device(iface->dev.parent); | |
786 | kfree(iface); | |
787 | return NULL; | |
788 | } | |
789 | EXPORT_SYMBOL_GPL(iscsi_create_iface); | |
790 | ||
791 | void iscsi_destroy_iface(struct iscsi_iface *iface) | |
792 | { | |
793 | sysfs_remove_group(&iface->dev.kobj, &iscsi_iface_group); | |
794 | device_unregister(&iface->dev); | |
795 | } | |
796 | EXPORT_SYMBOL_GPL(iscsi_destroy_iface); | |
797 | ||
c6a4bb2e AC |
798 | /* |
799 | * Interface to display flash node params to sysfs | |
800 | */ | |
801 | ||
802 | #define ISCSI_FLASHNODE_ATTR(_prefix, _name, _mode, _show, _store) \ | |
803 | struct device_attribute dev_attr_##_prefix##_##_name = \ | |
804 | __ATTR(_name, _mode, _show, _store) | |
805 | ||
806 | /* flash node session attrs show */ | |
807 | #define iscsi_flashnode_sess_attr_show(type, name, param) \ | |
808 | static ssize_t \ | |
809 | show_##type##_##name(struct device *dev, struct device_attribute *attr, \ | |
810 | char *buf) \ | |
811 | { \ | |
812 | struct iscsi_bus_flash_session *fnode_sess = \ | |
813 | iscsi_dev_to_flash_session(dev);\ | |
814 | struct iscsi_transport *t = fnode_sess->transport; \ | |
815 | return t->get_flashnode_param(fnode_sess, param, buf); \ | |
816 | } \ | |
817 | ||
818 | ||
819 | #define iscsi_flashnode_sess_attr(type, name, param) \ | |
820 | iscsi_flashnode_sess_attr_show(type, name, param) \ | |
821 | static ISCSI_FLASHNODE_ATTR(type, name, S_IRUGO, \ | |
822 | show_##type##_##name, NULL); | |
823 | ||
824 | /* Flash node session attributes */ | |
825 | ||
826 | iscsi_flashnode_sess_attr(fnode, auto_snd_tgt_disable, | |
827 | ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE); | |
828 | iscsi_flashnode_sess_attr(fnode, discovery_session, | |
829 | ISCSI_FLASHNODE_DISCOVERY_SESS); | |
830 | iscsi_flashnode_sess_attr(fnode, portal_type, ISCSI_FLASHNODE_PORTAL_TYPE); | |
831 | iscsi_flashnode_sess_attr(fnode, entry_enable, ISCSI_FLASHNODE_ENTRY_EN); | |
832 | iscsi_flashnode_sess_attr(fnode, immediate_data, ISCSI_FLASHNODE_IMM_DATA_EN); | |
833 | iscsi_flashnode_sess_attr(fnode, initial_r2t, ISCSI_FLASHNODE_INITIAL_R2T_EN); | |
834 | iscsi_flashnode_sess_attr(fnode, data_seq_in_order, | |
835 | ISCSI_FLASHNODE_DATASEQ_INORDER); | |
836 | iscsi_flashnode_sess_attr(fnode, data_pdu_in_order, | |
837 | ISCSI_FLASHNODE_PDU_INORDER); | |
838 | iscsi_flashnode_sess_attr(fnode, chap_auth, ISCSI_FLASHNODE_CHAP_AUTH_EN); | |
839 | iscsi_flashnode_sess_attr(fnode, discovery_logout, | |
840 | ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN); | |
841 | iscsi_flashnode_sess_attr(fnode, bidi_chap, ISCSI_FLASHNODE_BIDI_CHAP_EN); | |
842 | iscsi_flashnode_sess_attr(fnode, discovery_auth_optional, | |
843 | ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL); | |
844 | iscsi_flashnode_sess_attr(fnode, erl, ISCSI_FLASHNODE_ERL); | |
845 | iscsi_flashnode_sess_attr(fnode, first_burst_len, ISCSI_FLASHNODE_FIRST_BURST); | |
846 | iscsi_flashnode_sess_attr(fnode, def_time2wait, ISCSI_FLASHNODE_DEF_TIME2WAIT); | |
847 | iscsi_flashnode_sess_attr(fnode, def_time2retain, | |
848 | ISCSI_FLASHNODE_DEF_TIME2RETAIN); | |
849 | iscsi_flashnode_sess_attr(fnode, max_outstanding_r2t, ISCSI_FLASHNODE_MAX_R2T); | |
850 | iscsi_flashnode_sess_attr(fnode, isid, ISCSI_FLASHNODE_ISID); | |
851 | iscsi_flashnode_sess_attr(fnode, tsid, ISCSI_FLASHNODE_TSID); | |
852 | iscsi_flashnode_sess_attr(fnode, max_burst_len, ISCSI_FLASHNODE_MAX_BURST); | |
853 | iscsi_flashnode_sess_attr(fnode, def_taskmgmt_tmo, | |
854 | ISCSI_FLASHNODE_DEF_TASKMGMT_TMO); | |
855 | iscsi_flashnode_sess_attr(fnode, targetalias, ISCSI_FLASHNODE_ALIAS); | |
856 | iscsi_flashnode_sess_attr(fnode, targetname, ISCSI_FLASHNODE_NAME); | |
857 | iscsi_flashnode_sess_attr(fnode, tpgt, ISCSI_FLASHNODE_TPGT); | |
858 | iscsi_flashnode_sess_attr(fnode, discovery_parent_idx, | |
859 | ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX); | |
860 | iscsi_flashnode_sess_attr(fnode, discovery_parent_type, | |
861 | ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE); | |
862 | iscsi_flashnode_sess_attr(fnode, chap_in_idx, ISCSI_FLASHNODE_CHAP_IN_IDX); | |
863 | iscsi_flashnode_sess_attr(fnode, chap_out_idx, ISCSI_FLASHNODE_CHAP_OUT_IDX); | |
864 | iscsi_flashnode_sess_attr(fnode, username, ISCSI_FLASHNODE_USERNAME); | |
865 | iscsi_flashnode_sess_attr(fnode, username_in, ISCSI_FLASHNODE_USERNAME_IN); | |
866 | iscsi_flashnode_sess_attr(fnode, password, ISCSI_FLASHNODE_PASSWORD); | |
867 | iscsi_flashnode_sess_attr(fnode, password_in, ISCSI_FLASHNODE_PASSWORD_IN); | |
868 | iscsi_flashnode_sess_attr(fnode, is_boot_target, ISCSI_FLASHNODE_IS_BOOT_TGT); | |
869 | ||
870 | static struct attribute *iscsi_flashnode_sess_attrs[] = { | |
871 | &dev_attr_fnode_auto_snd_tgt_disable.attr, | |
872 | &dev_attr_fnode_discovery_session.attr, | |
873 | &dev_attr_fnode_portal_type.attr, | |
874 | &dev_attr_fnode_entry_enable.attr, | |
875 | &dev_attr_fnode_immediate_data.attr, | |
876 | &dev_attr_fnode_initial_r2t.attr, | |
877 | &dev_attr_fnode_data_seq_in_order.attr, | |
878 | &dev_attr_fnode_data_pdu_in_order.attr, | |
879 | &dev_attr_fnode_chap_auth.attr, | |
880 | &dev_attr_fnode_discovery_logout.attr, | |
881 | &dev_attr_fnode_bidi_chap.attr, | |
882 | &dev_attr_fnode_discovery_auth_optional.attr, | |
883 | &dev_attr_fnode_erl.attr, | |
884 | &dev_attr_fnode_first_burst_len.attr, | |
885 | &dev_attr_fnode_def_time2wait.attr, | |
886 | &dev_attr_fnode_def_time2retain.attr, | |
887 | &dev_attr_fnode_max_outstanding_r2t.attr, | |
888 | &dev_attr_fnode_isid.attr, | |
889 | &dev_attr_fnode_tsid.attr, | |
890 | &dev_attr_fnode_max_burst_len.attr, | |
891 | &dev_attr_fnode_def_taskmgmt_tmo.attr, | |
892 | &dev_attr_fnode_targetalias.attr, | |
893 | &dev_attr_fnode_targetname.attr, | |
894 | &dev_attr_fnode_tpgt.attr, | |
895 | &dev_attr_fnode_discovery_parent_idx.attr, | |
896 | &dev_attr_fnode_discovery_parent_type.attr, | |
897 | &dev_attr_fnode_chap_in_idx.attr, | |
898 | &dev_attr_fnode_chap_out_idx.attr, | |
899 | &dev_attr_fnode_username.attr, | |
900 | &dev_attr_fnode_username_in.attr, | |
901 | &dev_attr_fnode_password.attr, | |
902 | &dev_attr_fnode_password_in.attr, | |
903 | &dev_attr_fnode_is_boot_target.attr, | |
904 | NULL, | |
905 | }; | |
906 | ||
907 | static umode_t iscsi_flashnode_sess_attr_is_visible(struct kobject *kobj, | |
908 | struct attribute *attr, | |
909 | int i) | |
910 | { | |
911 | struct device *dev = container_of(kobj, struct device, kobj); | |
912 | struct iscsi_bus_flash_session *fnode_sess = | |
913 | iscsi_dev_to_flash_session(dev); | |
914 | struct iscsi_transport *t = fnode_sess->transport; | |
915 | int param; | |
916 | ||
917 | if (attr == &dev_attr_fnode_auto_snd_tgt_disable.attr) { | |
918 | param = ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE; | |
919 | } else if (attr == &dev_attr_fnode_discovery_session.attr) { | |
920 | param = ISCSI_FLASHNODE_DISCOVERY_SESS; | |
921 | } else if (attr == &dev_attr_fnode_portal_type.attr) { | |
922 | param = ISCSI_FLASHNODE_PORTAL_TYPE; | |
923 | } else if (attr == &dev_attr_fnode_entry_enable.attr) { | |
924 | param = ISCSI_FLASHNODE_ENTRY_EN; | |
925 | } else if (attr == &dev_attr_fnode_immediate_data.attr) { | |
926 | param = ISCSI_FLASHNODE_IMM_DATA_EN; | |
927 | } else if (attr == &dev_attr_fnode_initial_r2t.attr) { | |
928 | param = ISCSI_FLASHNODE_INITIAL_R2T_EN; | |
929 | } else if (attr == &dev_attr_fnode_data_seq_in_order.attr) { | |
930 | param = ISCSI_FLASHNODE_DATASEQ_INORDER; | |
931 | } else if (attr == &dev_attr_fnode_data_pdu_in_order.attr) { | |
932 | param = ISCSI_FLASHNODE_PDU_INORDER; | |
933 | } else if (attr == &dev_attr_fnode_chap_auth.attr) { | |
934 | param = ISCSI_FLASHNODE_CHAP_AUTH_EN; | |
935 | } else if (attr == &dev_attr_fnode_discovery_logout.attr) { | |
936 | param = ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN; | |
937 | } else if (attr == &dev_attr_fnode_bidi_chap.attr) { | |
938 | param = ISCSI_FLASHNODE_BIDI_CHAP_EN; | |
939 | } else if (attr == &dev_attr_fnode_discovery_auth_optional.attr) { | |
940 | param = ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL; | |
941 | } else if (attr == &dev_attr_fnode_erl.attr) { | |
942 | param = ISCSI_FLASHNODE_ERL; | |
943 | } else if (attr == &dev_attr_fnode_first_burst_len.attr) { | |
944 | param = ISCSI_FLASHNODE_FIRST_BURST; | |
945 | } else if (attr == &dev_attr_fnode_def_time2wait.attr) { | |
946 | param = ISCSI_FLASHNODE_DEF_TIME2WAIT; | |
947 | } else if (attr == &dev_attr_fnode_def_time2retain.attr) { | |
948 | param = ISCSI_FLASHNODE_DEF_TIME2RETAIN; | |
949 | } else if (attr == &dev_attr_fnode_max_outstanding_r2t.attr) { | |
950 | param = ISCSI_FLASHNODE_MAX_R2T; | |
951 | } else if (attr == &dev_attr_fnode_isid.attr) { | |
952 | param = ISCSI_FLASHNODE_ISID; | |
953 | } else if (attr == &dev_attr_fnode_tsid.attr) { | |
954 | param = ISCSI_FLASHNODE_TSID; | |
955 | } else if (attr == &dev_attr_fnode_max_burst_len.attr) { | |
956 | param = ISCSI_FLASHNODE_MAX_BURST; | |
957 | } else if (attr == &dev_attr_fnode_def_taskmgmt_tmo.attr) { | |
958 | param = ISCSI_FLASHNODE_DEF_TASKMGMT_TMO; | |
959 | } else if (attr == &dev_attr_fnode_targetalias.attr) { | |
960 | param = ISCSI_FLASHNODE_ALIAS; | |
961 | } else if (attr == &dev_attr_fnode_targetname.attr) { | |
962 | param = ISCSI_FLASHNODE_NAME; | |
963 | } else if (attr == &dev_attr_fnode_tpgt.attr) { | |
964 | param = ISCSI_FLASHNODE_TPGT; | |
965 | } else if (attr == &dev_attr_fnode_discovery_parent_idx.attr) { | |
966 | param = ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX; | |
967 | } else if (attr == &dev_attr_fnode_discovery_parent_type.attr) { | |
968 | param = ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE; | |
969 | } else if (attr == &dev_attr_fnode_chap_in_idx.attr) { | |
970 | param = ISCSI_FLASHNODE_CHAP_IN_IDX; | |
971 | } else if (attr == &dev_attr_fnode_chap_out_idx.attr) { | |
972 | param = ISCSI_FLASHNODE_CHAP_OUT_IDX; | |
973 | } else if (attr == &dev_attr_fnode_username.attr) { | |
974 | param = ISCSI_FLASHNODE_USERNAME; | |
975 | } else if (attr == &dev_attr_fnode_username_in.attr) { | |
976 | param = ISCSI_FLASHNODE_USERNAME_IN; | |
977 | } else if (attr == &dev_attr_fnode_password.attr) { | |
978 | param = ISCSI_FLASHNODE_PASSWORD; | |
979 | } else if (attr == &dev_attr_fnode_password_in.attr) { | |
980 | param = ISCSI_FLASHNODE_PASSWORD_IN; | |
981 | } else if (attr == &dev_attr_fnode_is_boot_target.attr) { | |
982 | param = ISCSI_FLASHNODE_IS_BOOT_TGT; | |
983 | } else { | |
984 | WARN_ONCE(1, "Invalid flashnode session attr"); | |
985 | return 0; | |
986 | } | |
987 | ||
988 | return t->attr_is_visible(ISCSI_FLASHNODE_PARAM, param); | |
989 | } | |
990 | ||
991 | static struct attribute_group iscsi_flashnode_sess_attr_group = { | |
992 | .attrs = iscsi_flashnode_sess_attrs, | |
993 | .is_visible = iscsi_flashnode_sess_attr_is_visible, | |
994 | }; | |
995 | ||
996 | static const struct attribute_group *iscsi_flashnode_sess_attr_groups[] = { | |
997 | &iscsi_flashnode_sess_attr_group, | |
998 | NULL, | |
999 | }; | |
1000 | ||
1001 | static void iscsi_flashnode_sess_release(struct device *dev) | |
1002 | { | |
1003 | struct iscsi_bus_flash_session *fnode_sess = | |
1004 | iscsi_dev_to_flash_session(dev); | |
1005 | ||
1006 | kfree(fnode_sess->targetname); | |
1007 | kfree(fnode_sess->targetalias); | |
1008 | kfree(fnode_sess->portal_type); | |
1009 | kfree(fnode_sess); | |
1010 | } | |
1011 | ||
1012 | struct device_type iscsi_flashnode_sess_dev_type = { | |
1013 | .name = "iscsi_flashnode_sess_dev_type", | |
1014 | .groups = iscsi_flashnode_sess_attr_groups, | |
1015 | .release = iscsi_flashnode_sess_release, | |
1016 | }; | |
1017 | ||
1018 | /* flash node connection attrs show */ | |
1019 | #define iscsi_flashnode_conn_attr_show(type, name, param) \ | |
1020 | static ssize_t \ | |
1021 | show_##type##_##name(struct device *dev, struct device_attribute *attr, \ | |
1022 | char *buf) \ | |
1023 | { \ | |
1024 | struct iscsi_bus_flash_conn *fnode_conn = iscsi_dev_to_flash_conn(dev);\ | |
1025 | struct iscsi_bus_flash_session *fnode_sess = \ | |
1026 | iscsi_flash_conn_to_flash_session(fnode_conn);\ | |
1027 | struct iscsi_transport *t = fnode_conn->transport; \ | |
1028 | return t->get_flashnode_param(fnode_sess, param, buf); \ | |
1029 | } \ | |
1030 | ||
1031 | ||
1032 | #define iscsi_flashnode_conn_attr(type, name, param) \ | |
1033 | iscsi_flashnode_conn_attr_show(type, name, param) \ | |
1034 | static ISCSI_FLASHNODE_ATTR(type, name, S_IRUGO, \ | |
1035 | show_##type##_##name, NULL); | |
1036 | ||
1037 | /* Flash node connection attributes */ | |
1038 | ||
1039 | iscsi_flashnode_conn_attr(fnode, is_fw_assigned_ipv6, | |
1040 | ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6); | |
1041 | iscsi_flashnode_conn_attr(fnode, header_digest, ISCSI_FLASHNODE_HDR_DGST_EN); | |
1042 | iscsi_flashnode_conn_attr(fnode, data_digest, ISCSI_FLASHNODE_DATA_DGST_EN); | |
1043 | iscsi_flashnode_conn_attr(fnode, snack_req, ISCSI_FLASHNODE_SNACK_REQ_EN); | |
1044 | iscsi_flashnode_conn_attr(fnode, tcp_timestamp_stat, | |
1045 | ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT); | |
1046 | iscsi_flashnode_conn_attr(fnode, tcp_nagle_disable, | |
1047 | ISCSI_FLASHNODE_TCP_NAGLE_DISABLE); | |
1048 | iscsi_flashnode_conn_attr(fnode, tcp_wsf_disable, | |
1049 | ISCSI_FLASHNODE_TCP_WSF_DISABLE); | |
1050 | iscsi_flashnode_conn_attr(fnode, tcp_timer_scale, | |
1051 | ISCSI_FLASHNODE_TCP_TIMER_SCALE); | |
1052 | iscsi_flashnode_conn_attr(fnode, tcp_timestamp_enable, | |
1053 | ISCSI_FLASHNODE_TCP_TIMESTAMP_EN); | |
1054 | iscsi_flashnode_conn_attr(fnode, fragment_disable, | |
1055 | ISCSI_FLASHNODE_IP_FRAG_DISABLE); | |
1056 | iscsi_flashnode_conn_attr(fnode, keepalive_tmo, ISCSI_FLASHNODE_KEEPALIVE_TMO); | |
1057 | iscsi_flashnode_conn_attr(fnode, port, ISCSI_FLASHNODE_PORT); | |
1058 | iscsi_flashnode_conn_attr(fnode, ipaddress, ISCSI_FLASHNODE_IPADDR); | |
1059 | iscsi_flashnode_conn_attr(fnode, max_recv_dlength, | |
1060 | ISCSI_FLASHNODE_MAX_RECV_DLENGTH); | |
1061 | iscsi_flashnode_conn_attr(fnode, max_xmit_dlength, | |
1062 | ISCSI_FLASHNODE_MAX_XMIT_DLENGTH); | |
1063 | iscsi_flashnode_conn_attr(fnode, local_port, ISCSI_FLASHNODE_LOCAL_PORT); | |
1064 | iscsi_flashnode_conn_attr(fnode, ipv4_tos, ISCSI_FLASHNODE_IPV4_TOS); | |
1065 | iscsi_flashnode_conn_attr(fnode, ipv6_traffic_class, ISCSI_FLASHNODE_IPV6_TC); | |
1066 | iscsi_flashnode_conn_attr(fnode, ipv6_flow_label, | |
1067 | ISCSI_FLASHNODE_IPV6_FLOW_LABEL); | |
1068 | iscsi_flashnode_conn_attr(fnode, redirect_ipaddr, | |
1069 | ISCSI_FLASHNODE_REDIRECT_IPADDR); | |
1070 | iscsi_flashnode_conn_attr(fnode, max_segment_size, | |
1071 | ISCSI_FLASHNODE_MAX_SEGMENT_SIZE); | |
1072 | iscsi_flashnode_conn_attr(fnode, link_local_ipv6, | |
1073 | ISCSI_FLASHNODE_LINK_LOCAL_IPV6); | |
1074 | iscsi_flashnode_conn_attr(fnode, tcp_xmit_wsf, ISCSI_FLASHNODE_TCP_XMIT_WSF); | |
1075 | iscsi_flashnode_conn_attr(fnode, tcp_recv_wsf, ISCSI_FLASHNODE_TCP_RECV_WSF); | |
1076 | iscsi_flashnode_conn_attr(fnode, statsn, ISCSI_FLASHNODE_STATSN); | |
1077 | iscsi_flashnode_conn_attr(fnode, exp_statsn, ISCSI_FLASHNODE_EXP_STATSN); | |
1078 | ||
1079 | static struct attribute *iscsi_flashnode_conn_attrs[] = { | |
1080 | &dev_attr_fnode_is_fw_assigned_ipv6.attr, | |
1081 | &dev_attr_fnode_header_digest.attr, | |
1082 | &dev_attr_fnode_data_digest.attr, | |
1083 | &dev_attr_fnode_snack_req.attr, | |
1084 | &dev_attr_fnode_tcp_timestamp_stat.attr, | |
1085 | &dev_attr_fnode_tcp_nagle_disable.attr, | |
1086 | &dev_attr_fnode_tcp_wsf_disable.attr, | |
1087 | &dev_attr_fnode_tcp_timer_scale.attr, | |
1088 | &dev_attr_fnode_tcp_timestamp_enable.attr, | |
1089 | &dev_attr_fnode_fragment_disable.attr, | |
1090 | &dev_attr_fnode_max_recv_dlength.attr, | |
1091 | &dev_attr_fnode_max_xmit_dlength.attr, | |
1092 | &dev_attr_fnode_keepalive_tmo.attr, | |
1093 | &dev_attr_fnode_port.attr, | |
1094 | &dev_attr_fnode_ipaddress.attr, | |
1095 | &dev_attr_fnode_redirect_ipaddr.attr, | |
1096 | &dev_attr_fnode_max_segment_size.attr, | |
1097 | &dev_attr_fnode_local_port.attr, | |
1098 | &dev_attr_fnode_ipv4_tos.attr, | |
1099 | &dev_attr_fnode_ipv6_traffic_class.attr, | |
1100 | &dev_attr_fnode_ipv6_flow_label.attr, | |
1101 | &dev_attr_fnode_link_local_ipv6.attr, | |
1102 | &dev_attr_fnode_tcp_xmit_wsf.attr, | |
1103 | &dev_attr_fnode_tcp_recv_wsf.attr, | |
1104 | &dev_attr_fnode_statsn.attr, | |
1105 | &dev_attr_fnode_exp_statsn.attr, | |
1106 | NULL, | |
1107 | }; | |
1108 | ||
1109 | static umode_t iscsi_flashnode_conn_attr_is_visible(struct kobject *kobj, | |
1110 | struct attribute *attr, | |
1111 | int i) | |
1112 | { | |
1113 | struct device *dev = container_of(kobj, struct device, kobj); | |
1114 | struct iscsi_bus_flash_conn *fnode_conn = iscsi_dev_to_flash_conn(dev); | |
1115 | struct iscsi_transport *t = fnode_conn->transport; | |
1116 | int param; | |
1117 | ||
1118 | if (attr == &dev_attr_fnode_is_fw_assigned_ipv6.attr) { | |
1119 | param = ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6; | |
1120 | } else if (attr == &dev_attr_fnode_header_digest.attr) { | |
1121 | param = ISCSI_FLASHNODE_HDR_DGST_EN; | |
1122 | } else if (attr == &dev_attr_fnode_data_digest.attr) { | |
1123 | param = ISCSI_FLASHNODE_DATA_DGST_EN; | |
1124 | } else if (attr == &dev_attr_fnode_snack_req.attr) { | |
1125 | param = ISCSI_FLASHNODE_SNACK_REQ_EN; | |
1126 | } else if (attr == &dev_attr_fnode_tcp_timestamp_stat.attr) { | |
1127 | param = ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT; | |
1128 | } else if (attr == &dev_attr_fnode_tcp_nagle_disable.attr) { | |
1129 | param = ISCSI_FLASHNODE_TCP_NAGLE_DISABLE; | |
1130 | } else if (attr == &dev_attr_fnode_tcp_wsf_disable.attr) { | |
1131 | param = ISCSI_FLASHNODE_TCP_WSF_DISABLE; | |
1132 | } else if (attr == &dev_attr_fnode_tcp_timer_scale.attr) { | |
1133 | param = ISCSI_FLASHNODE_TCP_TIMER_SCALE; | |
1134 | } else if (attr == &dev_attr_fnode_tcp_timestamp_enable.attr) { | |
1135 | param = ISCSI_FLASHNODE_TCP_TIMESTAMP_EN; | |
1136 | } else if (attr == &dev_attr_fnode_fragment_disable.attr) { | |
1137 | param = ISCSI_FLASHNODE_IP_FRAG_DISABLE; | |
1138 | } else if (attr == &dev_attr_fnode_max_recv_dlength.attr) { | |
1139 | param = ISCSI_FLASHNODE_MAX_RECV_DLENGTH; | |
1140 | } else if (attr == &dev_attr_fnode_max_xmit_dlength.attr) { | |
1141 | param = ISCSI_FLASHNODE_MAX_XMIT_DLENGTH; | |
1142 | } else if (attr == &dev_attr_fnode_keepalive_tmo.attr) { | |
1143 | param = ISCSI_FLASHNODE_KEEPALIVE_TMO; | |
1144 | } else if (attr == &dev_attr_fnode_port.attr) { | |
1145 | param = ISCSI_FLASHNODE_PORT; | |
1146 | } else if (attr == &dev_attr_fnode_ipaddress.attr) { | |
1147 | param = ISCSI_FLASHNODE_IPADDR; | |
1148 | } else if (attr == &dev_attr_fnode_redirect_ipaddr.attr) { | |
1149 | param = ISCSI_FLASHNODE_REDIRECT_IPADDR; | |
1150 | } else if (attr == &dev_attr_fnode_max_segment_size.attr) { | |
1151 | param = ISCSI_FLASHNODE_MAX_SEGMENT_SIZE; | |
1152 | } else if (attr == &dev_attr_fnode_local_port.attr) { | |
1153 | param = ISCSI_FLASHNODE_LOCAL_PORT; | |
1154 | } else if (attr == &dev_attr_fnode_ipv4_tos.attr) { | |
1155 | param = ISCSI_FLASHNODE_IPV4_TOS; | |
1156 | } else if (attr == &dev_attr_fnode_ipv6_traffic_class.attr) { | |
1157 | param = ISCSI_FLASHNODE_IPV6_TC; | |
1158 | } else if (attr == &dev_attr_fnode_ipv6_flow_label.attr) { | |
1159 | param = ISCSI_FLASHNODE_IPV6_FLOW_LABEL; | |
1160 | } else if (attr == &dev_attr_fnode_link_local_ipv6.attr) { | |
1161 | param = ISCSI_FLASHNODE_LINK_LOCAL_IPV6; | |
1162 | } else if (attr == &dev_attr_fnode_tcp_xmit_wsf.attr) { | |
1163 | param = ISCSI_FLASHNODE_TCP_XMIT_WSF; | |
1164 | } else if (attr == &dev_attr_fnode_tcp_recv_wsf.attr) { | |
1165 | param = ISCSI_FLASHNODE_TCP_RECV_WSF; | |
1166 | } else if (attr == &dev_attr_fnode_statsn.attr) { | |
1167 | param = ISCSI_FLASHNODE_STATSN; | |
1168 | } else if (attr == &dev_attr_fnode_exp_statsn.attr) { | |
1169 | param = ISCSI_FLASHNODE_EXP_STATSN; | |
1170 | } else { | |
1171 | WARN_ONCE(1, "Invalid flashnode connection attr"); | |
1172 | return 0; | |
1173 | } | |
1174 | ||
1175 | return t->attr_is_visible(ISCSI_FLASHNODE_PARAM, param); | |
1176 | } | |
1177 | ||
1178 | static struct attribute_group iscsi_flashnode_conn_attr_group = { | |
1179 | .attrs = iscsi_flashnode_conn_attrs, | |
1180 | .is_visible = iscsi_flashnode_conn_attr_is_visible, | |
1181 | }; | |
1182 | ||
1183 | static const struct attribute_group *iscsi_flashnode_conn_attr_groups[] = { | |
1184 | &iscsi_flashnode_conn_attr_group, | |
1185 | NULL, | |
1186 | }; | |
1187 | ||
1188 | static void iscsi_flashnode_conn_release(struct device *dev) | |
1189 | { | |
1190 | struct iscsi_bus_flash_conn *fnode_conn = iscsi_dev_to_flash_conn(dev); | |
1191 | ||
1192 | kfree(fnode_conn->ipaddress); | |
1193 | kfree(fnode_conn->redirect_ipaddr); | |
1194 | kfree(fnode_conn->link_local_ipv6_addr); | |
1195 | kfree(fnode_conn); | |
1196 | } | |
1197 | ||
1198 | struct device_type iscsi_flashnode_conn_dev_type = { | |
1199 | .name = "iscsi_flashnode_conn_dev_type", | |
1200 | .groups = iscsi_flashnode_conn_attr_groups, | |
1201 | .release = iscsi_flashnode_conn_release, | |
1202 | }; | |
1203 | ||
1204 | struct bus_type iscsi_flashnode_bus; | |
1205 | ||
1206 | int iscsi_flashnode_bus_match(struct device *dev, | |
1207 | struct device_driver *drv) | |
1208 | { | |
1209 | if (dev->bus == &iscsi_flashnode_bus) | |
1210 | return 1; | |
1211 | return 0; | |
1212 | } | |
1213 | EXPORT_SYMBOL_GPL(iscsi_flashnode_bus_match); | |
1214 | ||
1215 | struct bus_type iscsi_flashnode_bus = { | |
1216 | .name = "iscsi_flashnode", | |
1217 | .match = &iscsi_flashnode_bus_match, | |
1218 | }; | |
1219 | ||
1220 | /** | |
1221 | * iscsi_create_flashnode_sess - Add flashnode session entry in sysfs | |
1222 | * @shost: pointer to host data | |
1223 | * @index: index of flashnode to add in sysfs | |
1224 | * @transport: pointer to transport data | |
1225 | * @dd_size: total size to allocate | |
1226 | * | |
1227 | * Adds a sysfs entry for the flashnode session attributes | |
1228 | * | |
1229 | * Returns: | |
e227867f | 1230 | * pointer to allocated flashnode sess on success |
c6a4bb2e AC |
1231 | * %NULL on failure |
1232 | */ | |
1233 | struct iscsi_bus_flash_session * | |
1234 | iscsi_create_flashnode_sess(struct Scsi_Host *shost, int index, | |
1235 | struct iscsi_transport *transport, | |
1236 | int dd_size) | |
1237 | { | |
1238 | struct iscsi_bus_flash_session *fnode_sess; | |
1239 | int err; | |
1240 | ||
1241 | fnode_sess = kzalloc(sizeof(*fnode_sess) + dd_size, GFP_KERNEL); | |
1242 | if (!fnode_sess) | |
1243 | return NULL; | |
1244 | ||
1245 | fnode_sess->transport = transport; | |
1246 | fnode_sess->target_id = index; | |
1247 | fnode_sess->dev.type = &iscsi_flashnode_sess_dev_type; | |
1248 | fnode_sess->dev.bus = &iscsi_flashnode_bus; | |
1249 | fnode_sess->dev.parent = &shost->shost_gendev; | |
1250 | dev_set_name(&fnode_sess->dev, "flashnode_sess-%u:%u", | |
1251 | shost->host_no, index); | |
1252 | ||
1253 | err = device_register(&fnode_sess->dev); | |
1254 | if (err) | |
1255 | goto free_fnode_sess; | |
1256 | ||
1257 | if (dd_size) | |
1258 | fnode_sess->dd_data = &fnode_sess[1]; | |
1259 | ||
1260 | return fnode_sess; | |
1261 | ||
1262 | free_fnode_sess: | |
1263 | kfree(fnode_sess); | |
1264 | return NULL; | |
1265 | } | |
1266 | EXPORT_SYMBOL_GPL(iscsi_create_flashnode_sess); | |
1267 | ||
1268 | /** | |
1269 | * iscsi_create_flashnode_conn - Add flashnode conn entry in sysfs | |
1270 | * @shost: pointer to host data | |
1271 | * @fnode_sess: pointer to the parent flashnode session entry | |
1272 | * @transport: pointer to transport data | |
1273 | * @dd_size: total size to allocate | |
1274 | * | |
1275 | * Adds a sysfs entry for the flashnode connection attributes | |
1276 | * | |
1277 | * Returns: | |
1278 | * pointer to allocated flashnode conn on success | |
1279 | * %NULL on failure | |
1280 | */ | |
1281 | struct iscsi_bus_flash_conn * | |
1282 | iscsi_create_flashnode_conn(struct Scsi_Host *shost, | |
1283 | struct iscsi_bus_flash_session *fnode_sess, | |
1284 | struct iscsi_transport *transport, | |
1285 | int dd_size) | |
1286 | { | |
1287 | struct iscsi_bus_flash_conn *fnode_conn; | |
1288 | int err; | |
1289 | ||
1290 | fnode_conn = kzalloc(sizeof(*fnode_conn) + dd_size, GFP_KERNEL); | |
1291 | if (!fnode_conn) | |
1292 | return NULL; | |
1293 | ||
1294 | fnode_conn->transport = transport; | |
1295 | fnode_conn->dev.type = &iscsi_flashnode_conn_dev_type; | |
1296 | fnode_conn->dev.bus = &iscsi_flashnode_bus; | |
1297 | fnode_conn->dev.parent = &fnode_sess->dev; | |
1298 | dev_set_name(&fnode_conn->dev, "flashnode_conn-%u:%u:0", | |
1299 | shost->host_no, fnode_sess->target_id); | |
1300 | ||
1301 | err = device_register(&fnode_conn->dev); | |
1302 | if (err) | |
1303 | goto free_fnode_conn; | |
1304 | ||
1305 | if (dd_size) | |
1306 | fnode_conn->dd_data = &fnode_conn[1]; | |
1307 | ||
1308 | return fnode_conn; | |
1309 | ||
1310 | free_fnode_conn: | |
1311 | kfree(fnode_conn); | |
1312 | return NULL; | |
1313 | } | |
1314 | EXPORT_SYMBOL_GPL(iscsi_create_flashnode_conn); | |
1315 | ||
1316 | /** | |
1317 | * iscsi_is_flashnode_conn_dev - verify passed device is to be flashnode conn | |
1318 | * @dev: device to verify | |
1319 | * @data: pointer to data containing value to use for verification | |
1320 | * | |
1321 | * Verifies if the passed device is flashnode conn device | |
1322 | * | |
1323 | * Returns: | |
1324 | * 1 on success | |
1325 | * 0 on failure | |
1326 | */ | |
1327 | int iscsi_is_flashnode_conn_dev(struct device *dev, void *data) | |
1328 | { | |
1329 | return dev->bus == &iscsi_flashnode_bus; | |
1330 | } | |
1331 | EXPORT_SYMBOL_GPL(iscsi_is_flashnode_conn_dev); | |
1332 | ||
1333 | static int iscsi_destroy_flashnode_conn(struct iscsi_bus_flash_conn *fnode_conn) | |
1334 | { | |
1335 | device_unregister(&fnode_conn->dev); | |
1336 | return 0; | |
1337 | } | |
1338 | ||
1339 | static int flashnode_match_index(struct device *dev, void *data) | |
1340 | { | |
1341 | struct iscsi_bus_flash_session *fnode_sess = NULL; | |
1342 | int ret = 0; | |
1343 | ||
1344 | if (!iscsi_flashnode_bus_match(dev, NULL)) | |
1345 | goto exit_match_index; | |
1346 | ||
1347 | fnode_sess = iscsi_dev_to_flash_session(dev); | |
1348 | ret = (fnode_sess->target_id == *((int *)data)) ? 1 : 0; | |
1349 | ||
1350 | exit_match_index: | |
1351 | return ret; | |
1352 | } | |
1353 | ||
1354 | /** | |
1355 | * iscsi_get_flashnode_by_index -finds flashnode session entry by index | |
1356 | * @shost: pointer to host data | |
8526cb11 | 1357 | * @idx: index to match |
c6a4bb2e AC |
1358 | * |
1359 | * Finds the flashnode session object for the passed index | |
1360 | * | |
1361 | * Returns: | |
1362 | * pointer to found flashnode session object on success | |
1363 | * %NULL on failure | |
1364 | */ | |
1365 | static struct iscsi_bus_flash_session * | |
8526cb11 | 1366 | iscsi_get_flashnode_by_index(struct Scsi_Host *shost, uint32_t idx) |
c6a4bb2e AC |
1367 | { |
1368 | struct iscsi_bus_flash_session *fnode_sess = NULL; | |
1369 | struct device *dev; | |
1370 | ||
8526cb11 MC |
1371 | dev = device_find_child(&shost->shost_gendev, &idx, |
1372 | flashnode_match_index); | |
c6a4bb2e AC |
1373 | if (dev) |
1374 | fnode_sess = iscsi_dev_to_flash_session(dev); | |
1375 | ||
1376 | return fnode_sess; | |
1377 | } | |
1378 | ||
1379 | /** | |
1380 | * iscsi_find_flashnode_sess - finds flashnode session entry | |
1381 | * @shost: pointer to host data | |
1382 | * @data: pointer to data containing value to use for comparison | |
1383 | * @fn: function pointer that does actual comparison | |
1384 | * | |
1385 | * Finds the flashnode session object comparing the data passed using logic | |
1386 | * defined in passed function pointer | |
1387 | * | |
1388 | * Returns: | |
1389 | * pointer to found flashnode session device object on success | |
1390 | * %NULL on failure | |
1391 | */ | |
1392 | struct device * | |
1393 | iscsi_find_flashnode_sess(struct Scsi_Host *shost, void *data, | |
1394 | int (*fn)(struct device *dev, void *data)) | |
1395 | { | |
8526cb11 | 1396 | return device_find_child(&shost->shost_gendev, data, fn); |
c6a4bb2e AC |
1397 | } |
1398 | EXPORT_SYMBOL_GPL(iscsi_find_flashnode_sess); | |
1399 | ||
1400 | /** | |
1401 | * iscsi_find_flashnode_conn - finds flashnode connection entry | |
1402 | * @fnode_sess: pointer to parent flashnode session entry | |
c6a4bb2e AC |
1403 | * |
1404 | * Finds the flashnode connection object comparing the data passed using logic | |
1405 | * defined in passed function pointer | |
1406 | * | |
1407 | * Returns: | |
1408 | * pointer to found flashnode connection device object on success | |
1409 | * %NULL on failure | |
1410 | */ | |
1411 | struct device * | |
8526cb11 | 1412 | iscsi_find_flashnode_conn(struct iscsi_bus_flash_session *fnode_sess) |
c6a4bb2e | 1413 | { |
8526cb11 MC |
1414 | return device_find_child(&fnode_sess->dev, NULL, |
1415 | iscsi_is_flashnode_conn_dev); | |
c6a4bb2e AC |
1416 | } |
1417 | EXPORT_SYMBOL_GPL(iscsi_find_flashnode_conn); | |
1418 | ||
1419 | static int iscsi_iter_destroy_flashnode_conn_fn(struct device *dev, void *data) | |
1420 | { | |
1421 | if (!iscsi_is_flashnode_conn_dev(dev, NULL)) | |
1422 | return 0; | |
1423 | ||
1424 | return iscsi_destroy_flashnode_conn(iscsi_dev_to_flash_conn(dev)); | |
1425 | } | |
1426 | ||
1427 | /** | |
e227867f | 1428 | * iscsi_destroy_flashnode_sess - destroy flashnode session entry |
c6a4bb2e AC |
1429 | * @fnode_sess: pointer to flashnode session entry to be destroyed |
1430 | * | |
1431 | * Deletes the flashnode session entry and all children flashnode connection | |
1432 | * entries from sysfs | |
1433 | */ | |
1434 | void iscsi_destroy_flashnode_sess(struct iscsi_bus_flash_session *fnode_sess) | |
1435 | { | |
1436 | int err; | |
1437 | ||
1438 | err = device_for_each_child(&fnode_sess->dev, NULL, | |
1439 | iscsi_iter_destroy_flashnode_conn_fn); | |
1440 | if (err) | |
1441 | pr_err("Could not delete all connections for %s. Error %d.\n", | |
1442 | fnode_sess->dev.kobj.name, err); | |
1443 | ||
1444 | device_unregister(&fnode_sess->dev); | |
1445 | } | |
1446 | EXPORT_SYMBOL_GPL(iscsi_destroy_flashnode_sess); | |
1447 | ||
1448 | static int iscsi_iter_destroy_flashnode_fn(struct device *dev, void *data) | |
1449 | { | |
1450 | if (!iscsi_flashnode_bus_match(dev, NULL)) | |
1451 | return 0; | |
1452 | ||
1453 | iscsi_destroy_flashnode_sess(iscsi_dev_to_flash_session(dev)); | |
1454 | return 0; | |
1455 | } | |
1456 | ||
1457 | /** | |
e227867f | 1458 | * iscsi_destroy_all_flashnode - destroy all flashnode session entries |
c6a4bb2e AC |
1459 | * @shost: pointer to host data |
1460 | * | |
1461 | * Destroys all the flashnode session entries and all corresponding children | |
1462 | * flashnode connection entries from sysfs | |
1463 | */ | |
1464 | void iscsi_destroy_all_flashnode(struct Scsi_Host *shost) | |
1465 | { | |
1466 | device_for_each_child(&shost->shost_gendev, NULL, | |
1467 | iscsi_iter_destroy_flashnode_fn); | |
1468 | } | |
1469 | EXPORT_SYMBOL_GPL(iscsi_destroy_all_flashnode); | |
1470 | ||
90eeb01a MC |
1471 | /* |
1472 | * BSG support | |
1473 | */ | |
1474 | /** | |
1475 | * iscsi_bsg_host_dispatch - Dispatch command to LLD. | |
1476 | * @job: bsg job to be processed | |
1477 | */ | |
1478 | static int iscsi_bsg_host_dispatch(struct bsg_job *job) | |
1479 | { | |
1480 | struct Scsi_Host *shost = iscsi_job_to_shost(job); | |
1481 | struct iscsi_bsg_request *req = job->request; | |
1482 | struct iscsi_bsg_reply *reply = job->reply; | |
1483 | struct iscsi_internal *i = to_iscsi_internal(shost->transportt); | |
1484 | int cmdlen = sizeof(uint32_t); /* start with length of msgcode */ | |
1485 | int ret; | |
1486 | ||
1487 | /* check if we have the msgcode value at least */ | |
1488 | if (job->request_len < sizeof(uint32_t)) { | |
1489 | ret = -ENOMSG; | |
1490 | goto fail_host_msg; | |
1491 | } | |
1492 | ||
1493 | /* Validate the host command */ | |
1494 | switch (req->msgcode) { | |
1495 | case ISCSI_BSG_HST_VENDOR: | |
1496 | cmdlen += sizeof(struct iscsi_bsg_host_vendor); | |
1497 | if ((shost->hostt->vendor_id == 0L) || | |
1498 | (req->rqst_data.h_vendor.vendor_id != | |
1499 | shost->hostt->vendor_id)) { | |
1500 | ret = -ESRCH; | |
1501 | goto fail_host_msg; | |
1502 | } | |
1503 | break; | |
1504 | default: | |
1505 | ret = -EBADR; | |
1506 | goto fail_host_msg; | |
1507 | } | |
1508 | ||
1509 | /* check if we really have all the request data needed */ | |
1510 | if (job->request_len < cmdlen) { | |
1511 | ret = -ENOMSG; | |
1512 | goto fail_host_msg; | |
1513 | } | |
1514 | ||
1515 | ret = i->iscsi_transport->bsg_request(job); | |
1516 | if (!ret) | |
1517 | return 0; | |
1518 | ||
1519 | fail_host_msg: | |
1520 | /* return the errno failure code as the only status */ | |
1521 | BUG_ON(job->reply_len < sizeof(uint32_t)); | |
1522 | reply->reply_payload_rcv_len = 0; | |
1523 | reply->result = ret; | |
1524 | job->reply_len = sizeof(uint32_t); | |
1525 | bsg_job_done(job, ret, 0); | |
1526 | return 0; | |
1527 | } | |
1528 | ||
1529 | /** | |
1530 | * iscsi_bsg_host_add - Create and add the bsg hooks to receive requests | |
1531 | * @shost: shost for iscsi_host | |
eae627e4 | 1532 | * @ihost: iscsi_cls_host adding the structures to |
90eeb01a MC |
1533 | */ |
1534 | static int | |
1535 | iscsi_bsg_host_add(struct Scsi_Host *shost, struct iscsi_cls_host *ihost) | |
1536 | { | |
1537 | struct device *dev = &shost->shost_gendev; | |
1538 | struct iscsi_internal *i = to_iscsi_internal(shost->transportt); | |
1539 | struct request_queue *q; | |
1540 | char bsg_name[20]; | |
1541 | int ret; | |
1542 | ||
1543 | if (!i->iscsi_transport->bsg_request) | |
1544 | return -ENOTSUPP; | |
1545 | ||
1546 | snprintf(bsg_name, sizeof(bsg_name), "iscsi_host%d", shost->host_no); | |
1547 | ||
1548 | q = __scsi_alloc_queue(shost, bsg_request_fn); | |
1549 | if (!q) | |
1550 | return -ENOMEM; | |
1551 | ||
1552 | ret = bsg_setup_queue(dev, q, bsg_name, iscsi_bsg_host_dispatch, 0); | |
1553 | if (ret) { | |
1554 | shost_printk(KERN_ERR, shost, "bsg interface failed to " | |
1555 | "initialize - no request queue\n"); | |
1556 | blk_cleanup_queue(q); | |
1557 | return ret; | |
1558 | } | |
1559 | ||
1560 | ihost->bsg_q = q; | |
1561 | return 0; | |
1562 | } | |
1563 | ||
30a6c652 | 1564 | static int iscsi_setup_host(struct transport_container *tc, struct device *dev, |
ee959b00 | 1565 | struct device *cdev) |
30a6c652 MC |
1566 | { |
1567 | struct Scsi_Host *shost = dev_to_shost(dev); | |
32c6e1b9 | 1568 | struct iscsi_cls_host *ihost = shost->shost_data; |
30a6c652 MC |
1569 | |
1570 | memset(ihost, 0, sizeof(*ihost)); | |
8aae18ad | 1571 | atomic_set(&ihost->nr_scans, 0); |
7970634b | 1572 | mutex_init(&ihost->mutex); |
90eeb01a MC |
1573 | |
1574 | iscsi_bsg_host_add(shost, ihost); | |
1575 | /* ignore any bsg add error - we just can't do sgio */ | |
1576 | ||
1577 | return 0; | |
1578 | } | |
1579 | ||
1580 | static int iscsi_remove_host(struct transport_container *tc, | |
1581 | struct device *dev, struct device *cdev) | |
1582 | { | |
1583 | struct Scsi_Host *shost = dev_to_shost(dev); | |
1584 | struct iscsi_cls_host *ihost = shost->shost_data; | |
1585 | ||
1586 | if (ihost->bsg_q) { | |
86072d81 | 1587 | bsg_unregister_queue(ihost->bsg_q); |
90eeb01a MC |
1588 | blk_cleanup_queue(ihost->bsg_q); |
1589 | } | |
30a6c652 MC |
1590 | return 0; |
1591 | } | |
1592 | ||
1593 | static DECLARE_TRANSPORT_CLASS(iscsi_host_class, | |
1594 | "iscsi_host", | |
1595 | iscsi_setup_host, | |
90eeb01a | 1596 | iscsi_remove_host, |
30a6c652 MC |
1597 | NULL); |
1598 | ||
0896b752 AA |
1599 | static DECLARE_TRANSPORT_CLASS(iscsi_session_class, |
1600 | "iscsi_session", | |
1da177e4 LT |
1601 | NULL, |
1602 | NULL, | |
1603 | NULL); | |
1604 | ||
0896b752 AA |
1605 | static DECLARE_TRANSPORT_CLASS(iscsi_connection_class, |
1606 | "iscsi_connection", | |
1da177e4 LT |
1607 | NULL, |
1608 | NULL, | |
1609 | NULL); | |
0896b752 AA |
1610 | |
1611 | static struct sock *nls; | |
0b950672 | 1612 | static DEFINE_MUTEX(rx_queue_mutex); |
0896b752 | 1613 | |
7b7232f3 MC |
1614 | static LIST_HEAD(sesslist); |
1615 | static DEFINE_SPINLOCK(sesslock); | |
7b8631b5 MC |
1616 | static LIST_HEAD(connlist); |
1617 | static DEFINE_SPINLOCK(connlock); | |
0896b752 | 1618 | |
b5c7a12d MC |
1619 | static uint32_t iscsi_conn_get_sid(struct iscsi_cls_conn *conn) |
1620 | { | |
1621 | struct iscsi_cls_session *sess = iscsi_dev_to_session(conn->dev.parent); | |
1622 | return sess->sid; | |
1623 | } | |
1624 | ||
1625 | /* | |
1626 | * Returns the matching session to a given sid | |
1627 | */ | |
1628 | static struct iscsi_cls_session *iscsi_session_lookup(uint32_t sid) | |
7b7232f3 MC |
1629 | { |
1630 | unsigned long flags; | |
1631 | struct iscsi_cls_session *sess; | |
1632 | ||
1633 | spin_lock_irqsave(&sesslock, flags); | |
1634 | list_for_each_entry(sess, &sesslist, sess_list) { | |
b5c7a12d | 1635 | if (sess->sid == sid) { |
7b7232f3 MC |
1636 | spin_unlock_irqrestore(&sesslock, flags); |
1637 | return sess; | |
1638 | } | |
1639 | } | |
1640 | spin_unlock_irqrestore(&sesslock, flags); | |
1641 | return NULL; | |
1642 | } | |
1643 | ||
b5c7a12d MC |
1644 | /* |
1645 | * Returns the matching connection to a given sid / cid tuple | |
1646 | */ | |
1647 | static struct iscsi_cls_conn *iscsi_conn_lookup(uint32_t sid, uint32_t cid) | |
7b7232f3 MC |
1648 | { |
1649 | unsigned long flags; | |
1650 | struct iscsi_cls_conn *conn; | |
1651 | ||
1652 | spin_lock_irqsave(&connlock, flags); | |
1653 | list_for_each_entry(conn, &connlist, conn_list) { | |
b5c7a12d | 1654 | if ((conn->cid == cid) && (iscsi_conn_get_sid(conn) == sid)) { |
7b7232f3 MC |
1655 | spin_unlock_irqrestore(&connlock, flags); |
1656 | return conn; | |
1657 | } | |
1658 | } | |
1659 | spin_unlock_irqrestore(&connlock, flags); | |
1660 | return NULL; | |
1661 | } | |
1662 | ||
7b8631b5 MC |
1663 | /* |
1664 | * The following functions can be used by LLDs that allocate | |
1665 | * their own scsi_hosts or by software iscsi LLDs | |
1666 | */ | |
6eabafbe MC |
1667 | static struct { |
1668 | int value; | |
1669 | char *name; | |
1670 | } iscsi_session_state_names[] = { | |
1671 | { ISCSI_SESSION_LOGGED_IN, "LOGGED_IN" }, | |
1672 | { ISCSI_SESSION_FAILED, "FAILED" }, | |
1673 | { ISCSI_SESSION_FREE, "FREE" }, | |
1674 | }; | |
1675 | ||
3b0f208a | 1676 | static const char *iscsi_session_state_name(int state) |
6eabafbe MC |
1677 | { |
1678 | int i; | |
1679 | char *name = NULL; | |
1680 | ||
1681 | for (i = 0; i < ARRAY_SIZE(iscsi_session_state_names); i++) { | |
1682 | if (iscsi_session_state_names[i].value == state) { | |
1683 | name = iscsi_session_state_names[i].name; | |
1684 | break; | |
1685 | } | |
1686 | } | |
1687 | return name; | |
1688 | } | |
1689 | ||
1690 | int iscsi_session_chkready(struct iscsi_cls_session *session) | |
1691 | { | |
1692 | unsigned long flags; | |
1693 | int err; | |
1694 | ||
1695 | spin_lock_irqsave(&session->lock, flags); | |
1696 | switch (session->state) { | |
1697 | case ISCSI_SESSION_LOGGED_IN: | |
1698 | err = 0; | |
1699 | break; | |
1700 | case ISCSI_SESSION_FAILED: | |
9a1a69a1 | 1701 | err = DID_IMM_RETRY << 16; |
6eabafbe MC |
1702 | break; |
1703 | case ISCSI_SESSION_FREE: | |
56d7fcfa | 1704 | err = DID_TRANSPORT_FAILFAST << 16; |
6eabafbe MC |
1705 | break; |
1706 | default: | |
1707 | err = DID_NO_CONNECT << 16; | |
1708 | break; | |
1709 | } | |
1710 | spin_unlock_irqrestore(&session->lock, flags); | |
1711 | return err; | |
1712 | } | |
1713 | EXPORT_SYMBOL_GPL(iscsi_session_chkready); | |
1714 | ||
17fa575e MR |
1715 | int iscsi_is_session_online(struct iscsi_cls_session *session) |
1716 | { | |
1717 | unsigned long flags; | |
1718 | int ret = 0; | |
1719 | ||
1720 | spin_lock_irqsave(&session->lock, flags); | |
1721 | if (session->state == ISCSI_SESSION_LOGGED_IN) | |
1722 | ret = 1; | |
1723 | spin_unlock_irqrestore(&session->lock, flags); | |
1724 | return ret; | |
1725 | } | |
1726 | EXPORT_SYMBOL_GPL(iscsi_is_session_online); | |
1727 | ||
7b8631b5 MC |
1728 | static void iscsi_session_release(struct device *dev) |
1729 | { | |
1730 | struct iscsi_cls_session *session = iscsi_dev_to_session(dev); | |
7b8631b5 | 1731 | struct Scsi_Host *shost; |
0896b752 | 1732 | |
7b8631b5 MC |
1733 | shost = iscsi_session_to_shost(session); |
1734 | scsi_host_put(shost); | |
632248aa | 1735 | ISCSI_DBG_TRANS_SESSION(session, "Completing session release\n"); |
7b8631b5 | 1736 | kfree(session); |
7b8631b5 | 1737 | } |
0896b752 | 1738 | |
6260a5d2 | 1739 | int iscsi_is_session_dev(const struct device *dev) |
7b8631b5 MC |
1740 | { |
1741 | return dev->release == iscsi_session_release; | |
1742 | } | |
6260a5d2 | 1743 | EXPORT_SYMBOL_GPL(iscsi_is_session_dev); |
0896b752 | 1744 | |
a4804cd6 MC |
1745 | static int iscsi_iter_session_fn(struct device *dev, void *data) |
1746 | { | |
1747 | void (* fn) (struct iscsi_cls_session *) = data; | |
1748 | ||
1749 | if (!iscsi_is_session_dev(dev)) | |
1750 | return 0; | |
1751 | fn(iscsi_dev_to_session(dev)); | |
1752 | return 0; | |
1753 | } | |
1754 | ||
1755 | void iscsi_host_for_each_session(struct Scsi_Host *shost, | |
1756 | void (*fn)(struct iscsi_cls_session *)) | |
1757 | { | |
1758 | device_for_each_child(&shost->shost_gendev, fn, | |
1759 | iscsi_iter_session_fn); | |
1760 | } | |
1761 | EXPORT_SYMBOL_GPL(iscsi_host_for_each_session); | |
1762 | ||
8aae18ad MC |
1763 | /** |
1764 | * iscsi_scan_finished - helper to report when running scans are done | |
1765 | * @shost: scsi host | |
1766 | * @time: scan run time | |
1767 | * | |
1768 | * This function can be used by drives like qla4xxx to report to the scsi | |
1769 | * layer when the scans it kicked off at module load time are done. | |
1770 | */ | |
1771 | int iscsi_scan_finished(struct Scsi_Host *shost, unsigned long time) | |
1772 | { | |
32c6e1b9 | 1773 | struct iscsi_cls_host *ihost = shost->shost_data; |
8aae18ad MC |
1774 | /* |
1775 | * qla4xxx will have kicked off some session unblocks before calling | |
1776 | * scsi_scan_host, so just wait for them to complete. | |
1777 | */ | |
1778 | return !atomic_read(&ihost->nr_scans); | |
1779 | } | |
1780 | EXPORT_SYMBOL_GPL(iscsi_scan_finished); | |
1781 | ||
7970634b MC |
1782 | struct iscsi_scan_data { |
1783 | unsigned int channel; | |
1784 | unsigned int id; | |
9cb78c16 | 1785 | u64 lun; |
7970634b MC |
1786 | }; |
1787 | ||
1788 | static int iscsi_user_scan_session(struct device *dev, void *data) | |
30a6c652 | 1789 | { |
7970634b | 1790 | struct iscsi_scan_data *scan_data = data; |
30a6c652 | 1791 | struct iscsi_cls_session *session; |
7970634b MC |
1792 | struct Scsi_Host *shost; |
1793 | struct iscsi_cls_host *ihost; | |
1794 | unsigned long flags; | |
1795 | unsigned int id; | |
1796 | ||
1797 | if (!iscsi_is_session_dev(dev)) | |
1798 | return 0; | |
1799 | ||
1800 | session = iscsi_dev_to_session(dev); | |
632248aa MC |
1801 | |
1802 | ISCSI_DBG_TRANS_SESSION(session, "Scanning session\n"); | |
1803 | ||
7970634b MC |
1804 | shost = iscsi_session_to_shost(session); |
1805 | ihost = shost->shost_data; | |
30a6c652 MC |
1806 | |
1807 | mutex_lock(&ihost->mutex); | |
7970634b MC |
1808 | spin_lock_irqsave(&session->lock, flags); |
1809 | if (session->state != ISCSI_SESSION_LOGGED_IN) { | |
1810 | spin_unlock_irqrestore(&session->lock, flags); | |
632248aa | 1811 | goto user_scan_exit; |
30a6c652 | 1812 | } |
7970634b MC |
1813 | id = session->target_id; |
1814 | spin_unlock_irqrestore(&session->lock, flags); | |
30a6c652 | 1815 | |
7970634b MC |
1816 | if (id != ISCSI_MAX_TARGET) { |
1817 | if ((scan_data->channel == SCAN_WILD_CARD || | |
1818 | scan_data->channel == 0) && | |
1819 | (scan_data->id == SCAN_WILD_CARD || | |
1820 | scan_data->id == id)) | |
1821 | scsi_scan_target(&session->dev, 0, id, | |
1822 | scan_data->lun, 1); | |
1823 | } | |
632248aa MC |
1824 | |
1825 | user_scan_exit: | |
7970634b | 1826 | mutex_unlock(&ihost->mutex); |
632248aa | 1827 | ISCSI_DBG_TRANS_SESSION(session, "Completed session scan\n"); |
30a6c652 MC |
1828 | return 0; |
1829 | } | |
1830 | ||
7970634b | 1831 | static int iscsi_user_scan(struct Scsi_Host *shost, uint channel, |
9cb78c16 | 1832 | uint id, u64 lun) |
7970634b MC |
1833 | { |
1834 | struct iscsi_scan_data scan_data; | |
1835 | ||
1836 | scan_data.channel = channel; | |
1837 | scan_data.id = id; | |
1838 | scan_data.lun = lun; | |
1839 | ||
1840 | return device_for_each_child(&shost->shost_gendev, &scan_data, | |
1841 | iscsi_user_scan_session); | |
1842 | } | |
1843 | ||
bd976f62 MC |
1844 | static void iscsi_scan_session(struct work_struct *work) |
1845 | { | |
1846 | struct iscsi_cls_session *session = | |
1847 | container_of(work, struct iscsi_cls_session, scan_work); | |
8aae18ad | 1848 | struct Scsi_Host *shost = iscsi_session_to_shost(session); |
32c6e1b9 | 1849 | struct iscsi_cls_host *ihost = shost->shost_data; |
7970634b | 1850 | struct iscsi_scan_data scan_data; |
bd976f62 | 1851 | |
7970634b MC |
1852 | scan_data.channel = 0; |
1853 | scan_data.id = SCAN_WILD_CARD; | |
1854 | scan_data.lun = SCAN_WILD_CARD; | |
bd976f62 | 1855 | |
7970634b | 1856 | iscsi_user_scan_session(&session->dev, &scan_data); |
8aae18ad | 1857 | atomic_dec(&ihost->nr_scans); |
bd976f62 MC |
1858 | } |
1859 | ||
c01be6dc MC |
1860 | /** |
1861 | * iscsi_block_scsi_eh - block scsi eh until session state has transistioned | |
e6d4ef45 | 1862 | * @cmd: scsi cmd passed to scsi eh handler |
c01be6dc MC |
1863 | * |
1864 | * If the session is down this function will wait for the recovery | |
1865 | * timer to fire or for the session to be logged back in. If the | |
1866 | * recovery timer fires then FAST_IO_FAIL is returned. The caller | |
1867 | * should pass this error value to the scsi eh. | |
1868 | */ | |
1869 | int iscsi_block_scsi_eh(struct scsi_cmnd *cmd) | |
1870 | { | |
1871 | struct iscsi_cls_session *session = | |
1872 | starget_to_session(scsi_target(cmd->device)); | |
1873 | unsigned long flags; | |
1874 | int ret = 0; | |
1875 | ||
1876 | spin_lock_irqsave(&session->lock, flags); | |
1877 | while (session->state != ISCSI_SESSION_LOGGED_IN) { | |
1878 | if (session->state == ISCSI_SESSION_FREE) { | |
1879 | ret = FAST_IO_FAIL; | |
1880 | break; | |
1881 | } | |
1882 | spin_unlock_irqrestore(&session->lock, flags); | |
1883 | msleep(1000); | |
1884 | spin_lock_irqsave(&session->lock, flags); | |
1885 | } | |
1886 | spin_unlock_irqrestore(&session->lock, flags); | |
1887 | return ret; | |
1888 | } | |
1889 | EXPORT_SYMBOL_GPL(iscsi_block_scsi_eh); | |
1890 | ||
c4028958 | 1891 | static void session_recovery_timedout(struct work_struct *work) |
30a6c652 | 1892 | { |
c4028958 DH |
1893 | struct iscsi_cls_session *session = |
1894 | container_of(work, struct iscsi_cls_session, | |
1895 | recovery_work.work); | |
6eabafbe | 1896 | unsigned long flags; |
30a6c652 | 1897 | |
322d739d MC |
1898 | iscsi_cls_session_printk(KERN_INFO, session, |
1899 | "session recovery timed out after %d secs\n", | |
1900 | session->recovery_tmo); | |
30a6c652 | 1901 | |
6eabafbe MC |
1902 | spin_lock_irqsave(&session->lock, flags); |
1903 | switch (session->state) { | |
1904 | case ISCSI_SESSION_FAILED: | |
1905 | session->state = ISCSI_SESSION_FREE; | |
1906 | break; | |
1907 | case ISCSI_SESSION_LOGGED_IN: | |
1908 | case ISCSI_SESSION_FREE: | |
1909 | /* we raced with the unblock's flush */ | |
1910 | spin_unlock_irqrestore(&session->lock, flags); | |
1911 | return; | |
1912 | } | |
1913 | spin_unlock_irqrestore(&session->lock, flags); | |
1914 | ||
30a6c652 MC |
1915 | if (session->transport->session_recovery_timedout) |
1916 | session->transport->session_recovery_timedout(session); | |
1917 | ||
632248aa | 1918 | ISCSI_DBG_TRANS_SESSION(session, "Unblocking SCSI target\n"); |
5d9fb5cc | 1919 | scsi_target_unblock(&session->dev, SDEV_TRANSPORT_OFFLINE); |
632248aa | 1920 | ISCSI_DBG_TRANS_SESSION(session, "Completed unblocking SCSI target\n"); |
30a6c652 MC |
1921 | } |
1922 | ||
45ab33b6 | 1923 | static void __iscsi_unblock_session(struct work_struct *work) |
6eabafbe | 1924 | { |
45ab33b6 MC |
1925 | struct iscsi_cls_session *session = |
1926 | container_of(work, struct iscsi_cls_session, | |
1927 | unblock_work); | |
bd976f62 | 1928 | struct Scsi_Host *shost = iscsi_session_to_shost(session); |
32c6e1b9 | 1929 | struct iscsi_cls_host *ihost = shost->shost_data; |
6eabafbe MC |
1930 | unsigned long flags; |
1931 | ||
632248aa | 1932 | ISCSI_DBG_TRANS_SESSION(session, "Unblocking session\n"); |
45ab33b6 MC |
1933 | /* |
1934 | * The recovery and unblock work get run from the same workqueue, | |
1935 | * so try to cancel it if it was going to run after this unblock. | |
1936 | */ | |
1937 | cancel_delayed_work(&session->recovery_work); | |
6eabafbe MC |
1938 | spin_lock_irqsave(&session->lock, flags); |
1939 | session->state = ISCSI_SESSION_LOGGED_IN; | |
1940 | spin_unlock_irqrestore(&session->lock, flags); | |
45ab33b6 | 1941 | /* start IO */ |
5d9fb5cc | 1942 | scsi_target_unblock(&session->dev, SDEV_RUNNING); |
8aae18ad MC |
1943 | /* |
1944 | * Only do kernel scanning if the driver is properly hooked into | |
1945 | * the async scanning code (drivers like iscsi_tcp do login and | |
1946 | * scanning from userspace). | |
1947 | */ | |
1948 | if (shost->hostt->scan_finished) { | |
06d25af4 | 1949 | if (scsi_queue_work(shost, &session->scan_work)) |
8aae18ad MC |
1950 | atomic_inc(&ihost->nr_scans); |
1951 | } | |
632248aa | 1952 | ISCSI_DBG_TRANS_SESSION(session, "Completed unblocking session\n"); |
6eabafbe | 1953 | } |
45ab33b6 MC |
1954 | |
1955 | /** | |
1956 | * iscsi_unblock_session - set a session as logged in and start IO. | |
1957 | * @session: iscsi session | |
1958 | * | |
1959 | * Mark a session as ready to accept IO. | |
1960 | */ | |
1961 | void iscsi_unblock_session(struct iscsi_cls_session *session) | |
1962 | { | |
1963 | queue_work(iscsi_eh_timer_workq, &session->unblock_work); | |
1964 | /* | |
1965 | * make sure all the events have completed before tell the driver | |
1966 | * it is safe | |
1967 | */ | |
1968 | flush_workqueue(iscsi_eh_timer_workq); | |
1969 | } | |
30a6c652 MC |
1970 | EXPORT_SYMBOL_GPL(iscsi_unblock_session); |
1971 | ||
45ab33b6 | 1972 | static void __iscsi_block_session(struct work_struct *work) |
30a6c652 | 1973 | { |
45ab33b6 MC |
1974 | struct iscsi_cls_session *session = |
1975 | container_of(work, struct iscsi_cls_session, | |
1976 | block_work); | |
6eabafbe MC |
1977 | unsigned long flags; |
1978 | ||
632248aa | 1979 | ISCSI_DBG_TRANS_SESSION(session, "Blocking session\n"); |
6eabafbe MC |
1980 | spin_lock_irqsave(&session->lock, flags); |
1981 | session->state = ISCSI_SESSION_FAILED; | |
1982 | spin_unlock_irqrestore(&session->lock, flags); | |
30a6c652 | 1983 | scsi_target_block(&session->dev); |
632248aa | 1984 | ISCSI_DBG_TRANS_SESSION(session, "Completed SCSI target blocking\n"); |
fdd46dcb MC |
1985 | if (session->recovery_tmo >= 0) |
1986 | queue_delayed_work(iscsi_eh_timer_workq, | |
1987 | &session->recovery_work, | |
1988 | session->recovery_tmo * HZ); | |
30a6c652 | 1989 | } |
45ab33b6 MC |
1990 | |
1991 | void iscsi_block_session(struct iscsi_cls_session *session) | |
1992 | { | |
1993 | queue_work(iscsi_eh_timer_workq, &session->block_work); | |
1994 | } | |
30a6c652 MC |
1995 | EXPORT_SYMBOL_GPL(iscsi_block_session); |
1996 | ||
26974789 MC |
1997 | static void __iscsi_unbind_session(struct work_struct *work) |
1998 | { | |
1999 | struct iscsi_cls_session *session = | |
2000 | container_of(work, struct iscsi_cls_session, | |
2001 | unbind_work); | |
2002 | struct Scsi_Host *shost = iscsi_session_to_shost(session); | |
32c6e1b9 | 2003 | struct iscsi_cls_host *ihost = shost->shost_data; |
7970634b | 2004 | unsigned long flags; |
8d4a690c | 2005 | unsigned int target_id; |
26974789 | 2006 | |
632248aa MC |
2007 | ISCSI_DBG_TRANS_SESSION(session, "Unbinding session\n"); |
2008 | ||
26974789 MC |
2009 | /* Prevent new scans and make sure scanning is not in progress */ |
2010 | mutex_lock(&ihost->mutex); | |
7970634b MC |
2011 | spin_lock_irqsave(&session->lock, flags); |
2012 | if (session->target_id == ISCSI_MAX_TARGET) { | |
2013 | spin_unlock_irqrestore(&session->lock, flags); | |
26974789 MC |
2014 | mutex_unlock(&ihost->mutex); |
2015 | return; | |
2016 | } | |
8d4a690c MC |
2017 | |
2018 | target_id = session->target_id; | |
7970634b MC |
2019 | session->target_id = ISCSI_MAX_TARGET; |
2020 | spin_unlock_irqrestore(&session->lock, flags); | |
26974789 MC |
2021 | mutex_unlock(&ihost->mutex); |
2022 | ||
8d4a690c MC |
2023 | if (session->ida_used) |
2024 | ida_simple_remove(&iscsi_sess_ida, target_id); | |
2025 | ||
26974789 MC |
2026 | scsi_remove_target(&session->dev); |
2027 | iscsi_session_event(session, ISCSI_KEVENT_UNBIND_SESSION); | |
632248aa | 2028 | ISCSI_DBG_TRANS_SESSION(session, "Completed target removal\n"); |
26974789 MC |
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); |
6eabafbe | 2053 | spin_lock_init(&session->lock); |
7b8631b5 | 2054 | |
6a8a0d36 MC |
2055 | /* this is released in the dev's release function */ |
2056 | scsi_host_get(shost); | |
8434aa8b MC |
2057 | session->dev.parent = &shost->shost_gendev; |
2058 | session->dev.release = iscsi_session_release; | |
2059 | device_initialize(&session->dev); | |
5d91e209 | 2060 | if (dd_size) |
b5c7a12d | 2061 | session->dd_data = &session[1]; |
632248aa MC |
2062 | |
2063 | ISCSI_DBG_TRANS_SESSION(session, "Completed session allocation\n"); | |
8434aa8b MC |
2064 | return session; |
2065 | } | |
2066 | EXPORT_SYMBOL_GPL(iscsi_alloc_session); | |
2067 | ||
6a8a0d36 | 2068 | int iscsi_add_session(struct iscsi_cls_session *session, unsigned int target_id) |
8434aa8b MC |
2069 | { |
2070 | struct Scsi_Host *shost = iscsi_session_to_shost(session); | |
32c6e1b9 | 2071 | struct iscsi_cls_host *ihost; |
26974789 | 2072 | unsigned long flags; |
8d4a690c | 2073 | int id = 0; |
8434aa8b | 2074 | int err; |
b5c7a12d | 2075 | |
30a6c652 | 2076 | ihost = shost->shost_data; |
41be1444 | 2077 | session->sid = atomic_add_return(1, &iscsi_session_nr); |
7970634b | 2078 | |
8d4a690c MC |
2079 | if (target_id == ISCSI_MAX_TARGET) { |
2080 | id = ida_simple_get(&iscsi_sess_ida, 0, 0, GFP_KERNEL); | |
7970634b | 2081 | |
8d4a690c | 2082 | if (id < 0) { |
7970634b | 2083 | iscsi_cls_session_printk(KERN_ERR, session, |
8d4a690c MC |
2084 | "Failure in Target ID Allocation\n"); |
2085 | return id; | |
7970634b | 2086 | } |
8d4a690c MC |
2087 | session->target_id = (unsigned int)id; |
2088 | session->ida_used = true; | |
2089 | } else | |
2090 | session->target_id = target_id; | |
30a6c652 | 2091 | |
71610f55 | 2092 | dev_set_name(&session->dev, "session%u", session->sid); |
8434aa8b | 2093 | err = device_add(&session->dev); |
7b8631b5 | 2094 | if (err) { |
322d739d MC |
2095 | iscsi_cls_session_printk(KERN_ERR, session, |
2096 | "could not register session's dev\n"); | |
8d4a690c | 2097 | goto release_ida; |
7b8631b5 MC |
2098 | } |
2099 | transport_register_device(&session->dev); | |
2100 | ||
26974789 MC |
2101 | spin_lock_irqsave(&sesslock, flags); |
2102 | list_add(&session->sess_list, &sesslist); | |
2103 | spin_unlock_irqrestore(&sesslock, flags); | |
2104 | ||
26974789 | 2105 | iscsi_session_event(session, ISCSI_KEVENT_CREATE_SESSION); |
632248aa | 2106 | ISCSI_DBG_TRANS_SESSION(session, "Completed session adding\n"); |
8434aa8b | 2107 | return 0; |
30a6c652 | 2108 | |
8d4a690c MC |
2109 | release_ida: |
2110 | if (session->ida_used) | |
2111 | ida_simple_remove(&iscsi_sess_ida, session->target_id); | |
2112 | ||
8434aa8b | 2113 | return err; |
7b8631b5 | 2114 | } |
8434aa8b | 2115 | EXPORT_SYMBOL_GPL(iscsi_add_session); |
7b8631b5 MC |
2116 | |
2117 | /** | |
8434aa8b MC |
2118 | * iscsi_create_session - create iscsi class session |
2119 | * @shost: scsi host | |
2120 | * @transport: iscsi transport | |
5d91e209 | 2121 | * @dd_size: private driver data size |
eb44820c | 2122 | * @target_id: which target |
7b8631b5 | 2123 | * |
8434aa8b | 2124 | * This can be called from a LLD or iscsi_transport. |
eb44820c | 2125 | */ |
8434aa8b | 2126 | struct iscsi_cls_session * |
5d91e209 MC |
2127 | iscsi_create_session(struct Scsi_Host *shost, struct iscsi_transport *transport, |
2128 | int dd_size, unsigned int target_id) | |
8434aa8b MC |
2129 | { |
2130 | struct iscsi_cls_session *session; | |
2131 | ||
5d91e209 | 2132 | session = iscsi_alloc_session(shost, transport, dd_size); |
8434aa8b MC |
2133 | if (!session) |
2134 | return NULL; | |
2135 | ||
6a8a0d36 | 2136 | if (iscsi_add_session(session, target_id)) { |
8434aa8b MC |
2137 | iscsi_free_session(session); |
2138 | return NULL; | |
2139 | } | |
2140 | return session; | |
2141 | } | |
2142 | EXPORT_SYMBOL_GPL(iscsi_create_session); | |
2143 | ||
26974789 MC |
2144 | static void iscsi_conn_release(struct device *dev) |
2145 | { | |
2146 | struct iscsi_cls_conn *conn = iscsi_dev_to_conn(dev); | |
2147 | struct device *parent = conn->dev.parent; | |
2148 | ||
632248aa | 2149 | ISCSI_DBG_TRANS_CONN(conn, "Releasing conn\n"); |
26974789 MC |
2150 | kfree(conn); |
2151 | put_device(parent); | |
2152 | } | |
2153 | ||
2154 | static int iscsi_is_conn_dev(const struct device *dev) | |
2155 | { | |
2156 | return dev->release == iscsi_conn_release; | |
2157 | } | |
2158 | ||
2159 | static int iscsi_iter_destroy_conn_fn(struct device *dev, void *data) | |
2160 | { | |
2161 | if (!iscsi_is_conn_dev(dev)) | |
2162 | return 0; | |
2163 | return iscsi_destroy_conn(iscsi_dev_to_conn(dev)); | |
2164 | } | |
2165 | ||
8434aa8b | 2166 | void iscsi_remove_session(struct iscsi_cls_session *session) |
7b8631b5 | 2167 | { |
30a6c652 | 2168 | struct Scsi_Host *shost = iscsi_session_to_shost(session); |
26974789 MC |
2169 | unsigned long flags; |
2170 | int err; | |
2171 | ||
632248aa MC |
2172 | ISCSI_DBG_TRANS_SESSION(session, "Removing session\n"); |
2173 | ||
26974789 MC |
2174 | spin_lock_irqsave(&sesslock, flags); |
2175 | list_del(&session->sess_list); | |
2176 | spin_unlock_irqrestore(&sesslock, flags); | |
30a6c652 | 2177 | |
45ab33b6 MC |
2178 | /* make sure there are no blocks/unblocks queued */ |
2179 | flush_workqueue(iscsi_eh_timer_workq); | |
2180 | /* make sure the timedout callout is not running */ | |
2181 | if (!cancel_delayed_work(&session->recovery_work)) | |
2182 | flush_workqueue(iscsi_eh_timer_workq); | |
26974789 MC |
2183 | /* |
2184 | * If we are blocked let commands flow again. The lld or iscsi | |
2185 | * layer should set up the queuecommand to fail commands. | |
45ab33b6 MC |
2186 | * We assume that LLD will not be calling block/unblock while |
2187 | * removing the session. | |
26974789 | 2188 | */ |
6eabafbe MC |
2189 | spin_lock_irqsave(&session->lock, flags); |
2190 | session->state = ISCSI_SESSION_FREE; | |
2191 | spin_unlock_irqrestore(&session->lock, flags); | |
bd976f62 | 2192 | |
5d9fb5cc | 2193 | scsi_target_unblock(&session->dev, SDEV_TRANSPORT_OFFLINE); |
45ab33b6 | 2194 | /* flush running scans then delete devices */ |
06d25af4 | 2195 | scsi_flush_work(shost); |
45ab33b6 | 2196 | __iscsi_unbind_session(&session->unbind_work); |
30a6c652 | 2197 | |
26974789 MC |
2198 | /* hw iscsi may not have removed all connections from session */ |
2199 | err = device_for_each_child(&session->dev, NULL, | |
2200 | iscsi_iter_destroy_conn_fn); | |
2201 | if (err) | |
322d739d MC |
2202 | iscsi_cls_session_printk(KERN_ERR, session, |
2203 | "Could not delete all connections " | |
2204 | "for session. Error %d.\n", err); | |
8434aa8b | 2205 | |
7b8631b5 | 2206 | transport_unregister_device(&session->dev); |
632248aa MC |
2207 | |
2208 | ISCSI_DBG_TRANS_SESSION(session, "Completing session removal\n"); | |
8434aa8b MC |
2209 | device_del(&session->dev); |
2210 | } | |
2211 | EXPORT_SYMBOL_GPL(iscsi_remove_session); | |
2212 | ||
2213 | void iscsi_free_session(struct iscsi_cls_session *session) | |
2214 | { | |
632248aa | 2215 | ISCSI_DBG_TRANS_SESSION(session, "Freeing session\n"); |
26974789 | 2216 | iscsi_session_event(session, ISCSI_KEVENT_DESTROY_SESSION); |
8434aa8b | 2217 | put_device(&session->dev); |
7b8631b5 | 2218 | } |
8434aa8b MC |
2219 | EXPORT_SYMBOL_GPL(iscsi_free_session); |
2220 | ||
2221 | /** | |
2222 | * iscsi_destroy_session - destroy iscsi session | |
2223 | * @session: iscsi_session | |
2224 | * | |
2225 | * Can be called by a LLD or iscsi_transport. There must not be | |
2226 | * any running connections. | |
eb44820c | 2227 | */ |
8434aa8b MC |
2228 | int iscsi_destroy_session(struct iscsi_cls_session *session) |
2229 | { | |
2230 | iscsi_remove_session(session); | |
632248aa | 2231 | ISCSI_DBG_TRANS_SESSION(session, "Completing session destruction\n"); |
8434aa8b MC |
2232 | iscsi_free_session(session); |
2233 | return 0; | |
2234 | } | |
7b8631b5 MC |
2235 | EXPORT_SYMBOL_GPL(iscsi_destroy_session); |
2236 | ||
7b8631b5 MC |
2237 | /** |
2238 | * iscsi_create_conn - create iscsi class connection | |
2239 | * @session: iscsi cls session | |
5d91e209 | 2240 | * @dd_size: private driver data size |
7b8631b5 MC |
2241 | * @cid: connection id |
2242 | * | |
2243 | * This can be called from a LLD or iscsi_transport. The connection | |
2244 | * is child of the session so cid must be unique for all connections | |
2245 | * on the session. | |
b5c7a12d MC |
2246 | * |
2247 | * Since we do not support MCS, cid will normally be zero. In some cases | |
2248 | * for software iscsi we could be trying to preallocate a connection struct | |
2249 | * in which case there could be two connection structs and cid would be | |
2250 | * non-zero. | |
eb44820c | 2251 | */ |
7b8631b5 | 2252 | struct iscsi_cls_conn * |
5d91e209 | 2253 | iscsi_create_conn(struct iscsi_cls_session *session, int dd_size, uint32_t cid) |
7b8631b5 MC |
2254 | { |
2255 | struct iscsi_transport *transport = session->transport; | |
7b8631b5 | 2256 | struct iscsi_cls_conn *conn; |
26974789 | 2257 | unsigned long flags; |
7b8631b5 MC |
2258 | int err; |
2259 | ||
5d91e209 | 2260 | conn = kzalloc(sizeof(*conn) + dd_size, GFP_KERNEL); |
7b8631b5 MC |
2261 | if (!conn) |
2262 | return NULL; | |
5d91e209 | 2263 | if (dd_size) |
7b8631b5 MC |
2264 | conn->dd_data = &conn[1]; |
2265 | ||
22a39fbb | 2266 | mutex_init(&conn->ep_mutex); |
7b8631b5 MC |
2267 | INIT_LIST_HEAD(&conn->conn_list); |
2268 | conn->transport = transport; | |
b5c7a12d | 2269 | conn->cid = cid; |
7b8631b5 MC |
2270 | |
2271 | /* this is released in the dev's release function */ | |
2272 | if (!get_device(&session->dev)) | |
43a145a3 | 2273 | goto free_conn; |
b5c7a12d | 2274 | |
71610f55 | 2275 | dev_set_name(&conn->dev, "connection%d:%u", session->sid, cid); |
7b8631b5 MC |
2276 | conn->dev.parent = &session->dev; |
2277 | conn->dev.release = iscsi_conn_release; | |
2278 | err = device_register(&conn->dev); | |
2279 | if (err) { | |
322d739d MC |
2280 | iscsi_cls_session_printk(KERN_ERR, session, "could not " |
2281 | "register connection's dev\n"); | |
7b8631b5 MC |
2282 | goto release_parent_ref; |
2283 | } | |
2284 | transport_register_device(&conn->dev); | |
26974789 MC |
2285 | |
2286 | spin_lock_irqsave(&connlock, flags); | |
2287 | list_add(&conn->conn_list, &connlist); | |
26974789 | 2288 | spin_unlock_irqrestore(&connlock, flags); |
632248aa MC |
2289 | |
2290 | ISCSI_DBG_TRANS_CONN(conn, "Completed conn creation\n"); | |
7b8631b5 MC |
2291 | return conn; |
2292 | ||
2293 | release_parent_ref: | |
2294 | put_device(&session->dev); | |
2295 | free_conn: | |
2296 | kfree(conn); | |
2297 | return NULL; | |
2298 | } | |
2299 | ||
2300 | EXPORT_SYMBOL_GPL(iscsi_create_conn); | |
2301 | ||
2302 | /** | |
2303 | * iscsi_destroy_conn - destroy iscsi class connection | |
eb44820c | 2304 | * @conn: iscsi cls session |
7b8631b5 | 2305 | * |
26974789 | 2306 | * This can be called from a LLD or iscsi_transport. |
eb44820c | 2307 | */ |
7b8631b5 MC |
2308 | int iscsi_destroy_conn(struct iscsi_cls_conn *conn) |
2309 | { | |
26974789 MC |
2310 | unsigned long flags; |
2311 | ||
2312 | spin_lock_irqsave(&connlock, flags); | |
26974789 MC |
2313 | list_del(&conn->conn_list); |
2314 | spin_unlock_irqrestore(&connlock, flags); | |
2315 | ||
7b8631b5 | 2316 | transport_unregister_device(&conn->dev); |
632248aa | 2317 | ISCSI_DBG_TRANS_CONN(conn, "Completing conn destruction\n"); |
7b8631b5 MC |
2318 | device_unregister(&conn->dev); |
2319 | return 0; | |
2320 | } | |
7b8631b5 MC |
2321 | EXPORT_SYMBOL_GPL(iscsi_destroy_conn); |
2322 | ||
7b8631b5 MC |
2323 | /* |
2324 | * iscsi interface functions | |
2325 | */ | |
0896b752 AA |
2326 | static struct iscsi_internal * |
2327 | iscsi_if_transport_lookup(struct iscsi_transport *tt) | |
2328 | { | |
2329 | struct iscsi_internal *priv; | |
2330 | unsigned long flags; | |
2331 | ||
2332 | spin_lock_irqsave(&iscsi_transport_lock, flags); | |
2333 | list_for_each_entry(priv, &iscsi_transports, list) { | |
2334 | if (tt == priv->iscsi_transport) { | |
2335 | spin_unlock_irqrestore(&iscsi_transport_lock, flags); | |
2336 | return priv; | |
2337 | } | |
2338 | } | |
2339 | spin_unlock_irqrestore(&iscsi_transport_lock, flags); | |
2340 | return NULL; | |
2341 | } | |
1da177e4 | 2342 | |
53cb8a1f | 2343 | static int |
43514774 | 2344 | iscsi_multicast_skb(struct sk_buff *skb, uint32_t group, gfp_t gfp) |
53cb8a1f | 2345 | { |
43514774 | 2346 | return nlmsg_multicast(nls, skb, 0, group, gfp); |
1da177e4 | 2347 | } |
1da177e4 | 2348 | |
7b7232f3 | 2349 | int iscsi_recv_pdu(struct iscsi_cls_conn *conn, struct iscsi_hdr *hdr, |
0896b752 | 2350 | char *data, uint32_t data_size) |
1da177e4 | 2351 | { |
0896b752 AA |
2352 | struct nlmsghdr *nlh; |
2353 | struct sk_buff *skb; | |
2354 | struct iscsi_uevent *ev; | |
0896b752 | 2355 | char *pdu; |
790f39a2 | 2356 | struct iscsi_internal *priv; |
e07ebea0 H |
2357 | int len = nlmsg_total_size(sizeof(*ev) + sizeof(struct iscsi_hdr) + |
2358 | data_size); | |
0896b752 | 2359 | |
790f39a2 MC |
2360 | priv = iscsi_if_transport_lookup(conn->transport); |
2361 | if (!priv) | |
2362 | return -EINVAL; | |
2363 | ||
43a145a3 | 2364 | skb = alloc_skb(len, GFP_ATOMIC); |
0896b752 | 2365 | if (!skb) { |
e5bd7b54 | 2366 | iscsi_conn_error_event(conn, ISCSI_ERR_CONN_FAILED); |
322d739d MC |
2367 | iscsi_cls_conn_printk(KERN_ERR, conn, "can not deliver " |
2368 | "control PDU: OOM\n"); | |
0896b752 AA |
2369 | return -ENOMEM; |
2370 | } | |
1da177e4 | 2371 | |
43514774 | 2372 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); |
e07ebea0 | 2373 | ev = nlmsg_data(nlh); |
0896b752 AA |
2374 | memset(ev, 0, sizeof(*ev)); |
2375 | ev->transport_handle = iscsi_handle(conn->transport); | |
2376 | ev->type = ISCSI_KEVENT_RECV_PDU; | |
b5c7a12d MC |
2377 | ev->r.recv_req.cid = conn->cid; |
2378 | ev->r.recv_req.sid = iscsi_conn_get_sid(conn); | |
0896b752 AA |
2379 | pdu = (char*)ev + sizeof(*ev); |
2380 | memcpy(pdu, hdr, sizeof(struct iscsi_hdr)); | |
2381 | memcpy(pdu + sizeof(struct iscsi_hdr), data, data_size); | |
1da177e4 | 2382 | |
43514774 | 2383 | return iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_ATOMIC); |
1da177e4 | 2384 | } |
0896b752 | 2385 | EXPORT_SYMBOL_GPL(iscsi_recv_pdu); |
1da177e4 | 2386 | |
43514774 MC |
2387 | int iscsi_offload_mesg(struct Scsi_Host *shost, |
2388 | struct iscsi_transport *transport, uint32_t type, | |
2389 | char *data, uint16_t data_size) | |
2390 | { | |
2391 | struct nlmsghdr *nlh; | |
2392 | struct sk_buff *skb; | |
2393 | struct iscsi_uevent *ev; | |
e07ebea0 | 2394 | int len = nlmsg_total_size(sizeof(*ev) + data_size); |
43514774 | 2395 | |
a541f840 | 2396 | skb = alloc_skb(len, GFP_ATOMIC); |
43514774 MC |
2397 | if (!skb) { |
2398 | printk(KERN_ERR "can not deliver iscsi offload message:OOM\n"); | |
2399 | return -ENOMEM; | |
2400 | } | |
2401 | ||
2402 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); | |
e07ebea0 | 2403 | ev = nlmsg_data(nlh); |
43514774 MC |
2404 | memset(ev, 0, sizeof(*ev)); |
2405 | ev->type = type; | |
2406 | ev->transport_handle = iscsi_handle(transport); | |
2407 | switch (type) { | |
2408 | case ISCSI_KEVENT_PATH_REQ: | |
2409 | ev->r.req_path.host_no = shost->host_no; | |
2410 | break; | |
2411 | case ISCSI_KEVENT_IF_DOWN: | |
2412 | ev->r.notify_if_down.host_no = shost->host_no; | |
2413 | break; | |
2414 | } | |
2415 | ||
2416 | memcpy((char *)ev + sizeof(*ev), data, data_size); | |
2417 | ||
a541f840 | 2418 | return iscsi_multicast_skb(skb, ISCSI_NL_GRP_UIP, GFP_ATOMIC); |
43514774 MC |
2419 | } |
2420 | EXPORT_SYMBOL_GPL(iscsi_offload_mesg); | |
2421 | ||
e5bd7b54 | 2422 | void iscsi_conn_error_event(struct iscsi_cls_conn *conn, enum iscsi_err error) |
1da177e4 | 2423 | { |
0896b752 AA |
2424 | struct nlmsghdr *nlh; |
2425 | struct sk_buff *skb; | |
2426 | struct iscsi_uevent *ev; | |
790f39a2 | 2427 | struct iscsi_internal *priv; |
e07ebea0 | 2428 | int len = nlmsg_total_size(sizeof(*ev)); |
0896b752 | 2429 | |
790f39a2 MC |
2430 | priv = iscsi_if_transport_lookup(conn->transport); |
2431 | if (!priv) | |
2432 | return; | |
2433 | ||
43a145a3 | 2434 | skb = alloc_skb(len, GFP_ATOMIC); |
0896b752 | 2435 | if (!skb) { |
322d739d MC |
2436 | iscsi_cls_conn_printk(KERN_ERR, conn, "gracefully ignored " |
2437 | "conn error (%d)\n", error); | |
0896b752 AA |
2438 | return; |
2439 | } | |
2440 | ||
43514774 | 2441 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); |
e07ebea0 | 2442 | ev = nlmsg_data(nlh); |
0896b752 AA |
2443 | ev->transport_handle = iscsi_handle(conn->transport); |
2444 | ev->type = ISCSI_KEVENT_CONN_ERROR; | |
0896b752 | 2445 | ev->r.connerror.error = error; |
b5c7a12d MC |
2446 | ev->r.connerror.cid = conn->cid; |
2447 | ev->r.connerror.sid = iscsi_conn_get_sid(conn); | |
1da177e4 | 2448 | |
43514774 | 2449 | iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_ATOMIC); |
1da177e4 | 2450 | |
322d739d MC |
2451 | iscsi_cls_conn_printk(KERN_INFO, conn, "detected conn error (%d)\n", |
2452 | error); | |
0896b752 | 2453 | } |
e5bd7b54 | 2454 | EXPORT_SYMBOL_GPL(iscsi_conn_error_event); |
0896b752 | 2455 | |
17fa575e MR |
2456 | void iscsi_conn_login_event(struct iscsi_cls_conn *conn, |
2457 | enum iscsi_conn_state state) | |
2458 | { | |
2459 | struct nlmsghdr *nlh; | |
2460 | struct sk_buff *skb; | |
2461 | struct iscsi_uevent *ev; | |
2462 | struct iscsi_internal *priv; | |
e07ebea0 | 2463 | int len = nlmsg_total_size(sizeof(*ev)); |
17fa575e MR |
2464 | |
2465 | priv = iscsi_if_transport_lookup(conn->transport); | |
2466 | if (!priv) | |
2467 | return; | |
2468 | ||
2469 | skb = alloc_skb(len, GFP_ATOMIC); | |
2470 | if (!skb) { | |
2471 | iscsi_cls_conn_printk(KERN_ERR, conn, "gracefully ignored " | |
2472 | "conn login (%d)\n", state); | |
2473 | return; | |
2474 | } | |
2475 | ||
2476 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); | |
e07ebea0 | 2477 | ev = nlmsg_data(nlh); |
17fa575e MR |
2478 | ev->transport_handle = iscsi_handle(conn->transport); |
2479 | ev->type = ISCSI_KEVENT_CONN_LOGIN_STATE; | |
2480 | ev->r.conn_login.state = state; | |
2481 | ev->r.conn_login.cid = conn->cid; | |
2482 | ev->r.conn_login.sid = iscsi_conn_get_sid(conn); | |
2483 | iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_ATOMIC); | |
2484 | ||
2485 | iscsi_cls_conn_printk(KERN_INFO, conn, "detected conn login (%d)\n", | |
2486 | state); | |
2487 | } | |
2488 | EXPORT_SYMBOL_GPL(iscsi_conn_login_event); | |
2489 | ||
a11e2545 VC |
2490 | void iscsi_post_host_event(uint32_t host_no, struct iscsi_transport *transport, |
2491 | enum iscsi_host_event_code code, uint32_t data_size, | |
2492 | uint8_t *data) | |
2493 | { | |
2494 | struct nlmsghdr *nlh; | |
2495 | struct sk_buff *skb; | |
2496 | struct iscsi_uevent *ev; | |
e07ebea0 | 2497 | int len = nlmsg_total_size(sizeof(*ev) + data_size); |
a11e2545 | 2498 | |
49d0e64b | 2499 | skb = alloc_skb(len, GFP_NOIO); |
a11e2545 VC |
2500 | if (!skb) { |
2501 | printk(KERN_ERR "gracefully ignored host event (%d):%d OOM\n", | |
2502 | host_no, code); | |
2503 | return; | |
2504 | } | |
2505 | ||
2506 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); | |
e07ebea0 | 2507 | ev = nlmsg_data(nlh); |
a11e2545 VC |
2508 | ev->transport_handle = iscsi_handle(transport); |
2509 | ev->type = ISCSI_KEVENT_HOST_EVENT; | |
2510 | ev->r.host_event.host_no = host_no; | |
2511 | ev->r.host_event.code = code; | |
2512 | ev->r.host_event.data_size = data_size; | |
2513 | ||
2514 | if (data_size) | |
2515 | memcpy((char *)ev + sizeof(*ev), data, data_size); | |
2516 | ||
49d0e64b | 2517 | iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_NOIO); |
a11e2545 VC |
2518 | } |
2519 | EXPORT_SYMBOL_GPL(iscsi_post_host_event); | |
2520 | ||
ac20c7bf VC |
2521 | void iscsi_ping_comp_event(uint32_t host_no, struct iscsi_transport *transport, |
2522 | uint32_t status, uint32_t pid, uint32_t data_size, | |
2523 | uint8_t *data) | |
2524 | { | |
2525 | struct nlmsghdr *nlh; | |
2526 | struct sk_buff *skb; | |
2527 | struct iscsi_uevent *ev; | |
e07ebea0 | 2528 | int len = nlmsg_total_size(sizeof(*ev) + data_size); |
ac20c7bf | 2529 | |
49d0e64b | 2530 | skb = alloc_skb(len, GFP_NOIO); |
ac20c7bf VC |
2531 | if (!skb) { |
2532 | printk(KERN_ERR "gracefully ignored ping comp: OOM\n"); | |
2533 | return; | |
2534 | } | |
2535 | ||
2536 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); | |
e07ebea0 | 2537 | ev = nlmsg_data(nlh); |
ac20c7bf VC |
2538 | ev->transport_handle = iscsi_handle(transport); |
2539 | ev->type = ISCSI_KEVENT_PING_COMP; | |
2540 | ev->r.ping_comp.host_no = host_no; | |
2541 | ev->r.ping_comp.status = status; | |
2542 | ev->r.ping_comp.pid = pid; | |
2543 | ev->r.ping_comp.data_size = data_size; | |
2544 | memcpy((char *)ev + sizeof(*ev), data, data_size); | |
2545 | ||
49d0e64b | 2546 | iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_NOIO); |
ac20c7bf VC |
2547 | } |
2548 | EXPORT_SYMBOL_GPL(iscsi_ping_comp_event); | |
2549 | ||
0896b752 | 2550 | static int |
43514774 MC |
2551 | iscsi_if_send_reply(uint32_t group, int seq, int type, int done, int multi, |
2552 | void *payload, int size) | |
0896b752 AA |
2553 | { |
2554 | struct sk_buff *skb; | |
2555 | struct nlmsghdr *nlh; | |
e07ebea0 | 2556 | int len = nlmsg_total_size(size); |
0896b752 AA |
2557 | int flags = multi ? NLM_F_MULTI : 0; |
2558 | int t = done ? NLMSG_DONE : type; | |
2559 | ||
43a145a3 | 2560 | skb = alloc_skb(len, GFP_ATOMIC); |
239a7dc2 MC |
2561 | if (!skb) { |
2562 | printk(KERN_ERR "Could not allocate skb to send reply.\n"); | |
2563 | return -ENOMEM; | |
2564 | } | |
0896b752 | 2565 | |
43514774 | 2566 | nlh = __nlmsg_put(skb, 0, 0, t, (len - sizeof(*nlh)), 0); |
0896b752 | 2567 | nlh->nlmsg_flags = flags; |
e07ebea0 | 2568 | memcpy(nlmsg_data(nlh), payload, size); |
43514774 | 2569 | return iscsi_multicast_skb(skb, group, GFP_ATOMIC); |
1da177e4 | 2570 | } |
1da177e4 | 2571 | |
7b8631b5 | 2572 | static int |
5b940adf | 2573 | iscsi_if_get_stats(struct iscsi_transport *transport, struct nlmsghdr *nlh) |
7b8631b5 | 2574 | { |
e07ebea0 | 2575 | struct iscsi_uevent *ev = nlmsg_data(nlh); |
7b8631b5 MC |
2576 | struct iscsi_stats *stats; |
2577 | struct sk_buff *skbstat; | |
2578 | struct iscsi_cls_conn *conn; | |
2579 | struct nlmsghdr *nlhstat; | |
2580 | struct iscsi_uevent *evstat; | |
790f39a2 | 2581 | struct iscsi_internal *priv; |
e07ebea0 H |
2582 | int len = nlmsg_total_size(sizeof(*ev) + |
2583 | sizeof(struct iscsi_stats) + | |
2584 | sizeof(struct iscsi_stats_custom) * | |
2585 | ISCSI_STATS_CUSTOM_MAX); | |
7b8631b5 | 2586 | int err = 0; |
0896b752 | 2587 | |
790f39a2 MC |
2588 | priv = iscsi_if_transport_lookup(transport); |
2589 | if (!priv) | |
2590 | return -EINVAL; | |
2591 | ||
b5c7a12d | 2592 | conn = iscsi_conn_lookup(ev->u.get_stats.sid, ev->u.get_stats.cid); |
7b8631b5 MC |
2593 | if (!conn) |
2594 | return -EEXIST; | |
0896b752 | 2595 | |
7b8631b5 MC |
2596 | do { |
2597 | int actual_size; | |
0896b752 | 2598 | |
43a145a3 | 2599 | skbstat = alloc_skb(len, GFP_ATOMIC); |
7b8631b5 | 2600 | if (!skbstat) { |
322d739d MC |
2601 | iscsi_cls_conn_printk(KERN_ERR, conn, "can not " |
2602 | "deliver stats: OOM\n"); | |
7b8631b5 MC |
2603 | return -ENOMEM; |
2604 | } | |
2605 | ||
43514774 | 2606 | nlhstat = __nlmsg_put(skbstat, 0, 0, 0, |
7b8631b5 | 2607 | (len - sizeof(*nlhstat)), 0); |
e07ebea0 | 2608 | evstat = nlmsg_data(nlhstat); |
7b8631b5 MC |
2609 | memset(evstat, 0, sizeof(*evstat)); |
2610 | evstat->transport_handle = iscsi_handle(conn->transport); | |
2611 | evstat->type = nlh->nlmsg_type; | |
b5c7a12d MC |
2612 | evstat->u.get_stats.cid = |
2613 | ev->u.get_stats.cid; | |
2614 | evstat->u.get_stats.sid = | |
2615 | ev->u.get_stats.sid; | |
7b8631b5 MC |
2616 | stats = (struct iscsi_stats *) |
2617 | ((char*)evstat + sizeof(*evstat)); | |
2618 | memset(stats, 0, sizeof(*stats)); | |
2619 | ||
7b7232f3 | 2620 | transport->get_stats(conn, stats); |
e07ebea0 H |
2621 | actual_size = nlmsg_total_size(sizeof(struct iscsi_uevent) + |
2622 | sizeof(struct iscsi_stats) + | |
2623 | sizeof(struct iscsi_stats_custom) * | |
2624 | stats->custom_length); | |
7b8631b5 | 2625 | actual_size -= sizeof(*nlhstat); |
e07ebea0 | 2626 | actual_size = nlmsg_msg_size(actual_size); |
5b940adf | 2627 | skb_trim(skbstat, NLMSG_ALIGN(actual_size)); |
7b8631b5 MC |
2628 | nlhstat->nlmsg_len = actual_size; |
2629 | ||
43514774 MC |
2630 | err = iscsi_multicast_skb(skbstat, ISCSI_NL_GRP_ISCSID, |
2631 | GFP_ATOMIC); | |
7b8631b5 MC |
2632 | } while (err < 0 && err != -ECONNREFUSED); |
2633 | ||
2634 | return err; | |
0896b752 AA |
2635 | } |
2636 | ||
53cb8a1f | 2637 | /** |
26974789 MC |
2638 | * iscsi_session_event - send session destr. completion event |
2639 | * @session: iscsi class session | |
2640 | * @event: type of event | |
eb44820c | 2641 | */ |
26974789 MC |
2642 | int iscsi_session_event(struct iscsi_cls_session *session, |
2643 | enum iscsi_uevent_e event) | |
53cb8a1f MC |
2644 | { |
2645 | struct iscsi_internal *priv; | |
53cb8a1f MC |
2646 | struct Scsi_Host *shost; |
2647 | struct iscsi_uevent *ev; | |
2648 | struct sk_buff *skb; | |
2649 | struct nlmsghdr *nlh; | |
e07ebea0 | 2650 | int rc, len = nlmsg_total_size(sizeof(*ev)); |
53cb8a1f | 2651 | |
26974789 | 2652 | priv = iscsi_if_transport_lookup(session->transport); |
53cb8a1f MC |
2653 | if (!priv) |
2654 | return -EINVAL; | |
53cb8a1f MC |
2655 | shost = iscsi_session_to_shost(session); |
2656 | ||
43a145a3 | 2657 | skb = alloc_skb(len, GFP_KERNEL); |
53cb8a1f | 2658 | if (!skb) { |
322d739d MC |
2659 | iscsi_cls_session_printk(KERN_ERR, session, |
2660 | "Cannot notify userspace of session " | |
2661 | "event %u\n", event); | |
53cb8a1f MC |
2662 | return -ENOMEM; |
2663 | } | |
2664 | ||
43514774 | 2665 | nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0); |
e07ebea0 | 2666 | ev = nlmsg_data(nlh); |
26974789 | 2667 | ev->transport_handle = iscsi_handle(session->transport); |
53cb8a1f | 2668 | |
26974789 MC |
2669 | ev->type = event; |
2670 | switch (event) { | |
2671 | case ISCSI_KEVENT_DESTROY_SESSION: | |
2672 | ev->r.d_session.host_no = shost->host_no; | |
2673 | ev->r.d_session.sid = session->sid; | |
2674 | break; | |
2675 | case ISCSI_KEVENT_CREATE_SESSION: | |
2676 | ev->r.c_session_ret.host_no = shost->host_no; | |
2677 | ev->r.c_session_ret.sid = session->sid; | |
2678 | break; | |
2679 | case ISCSI_KEVENT_UNBIND_SESSION: | |
2680 | ev->r.unbind_session.host_no = shost->host_no; | |
2681 | ev->r.unbind_session.sid = session->sid; | |
2682 | break; | |
2683 | default: | |
322d739d MC |
2684 | iscsi_cls_session_printk(KERN_ERR, session, "Invalid event " |
2685 | "%u.\n", event); | |
26974789 | 2686 | kfree_skb(skb); |
53cb8a1f | 2687 | return -EINVAL; |
53cb8a1f MC |
2688 | } |
2689 | ||
53cb8a1f MC |
2690 | /* |
2691 | * this will occur if the daemon is not up, so we just warn | |
2692 | * the user and when the daemon is restarted it will handle it | |
2693 | */ | |
43514774 | 2694 | rc = iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_KERNEL); |
ff491a73 | 2695 | if (rc == -ESRCH) |
322d739d MC |
2696 | iscsi_cls_session_printk(KERN_ERR, session, |
2697 | "Cannot notify userspace of session " | |
2698 | "event %u. Check iscsi daemon\n", | |
2699 | event); | |
632248aa MC |
2700 | |
2701 | ISCSI_DBG_TRANS_SESSION(session, "Completed handling event %d rc %d\n", | |
2702 | event, rc); | |
53cb8a1f MC |
2703 | return rc; |
2704 | } | |
26974789 | 2705 | EXPORT_SYMBOL_GPL(iscsi_session_event); |
53cb8a1f | 2706 | |
0896b752 | 2707 | static int |
d82ff9be | 2708 | iscsi_if_create_session(struct iscsi_internal *priv, struct iscsi_endpoint *ep, |
0c70d84b MC |
2709 | struct iscsi_uevent *ev, pid_t pid, |
2710 | uint32_t initial_cmdsn, uint16_t cmds_max, | |
2711 | uint16_t queue_depth) | |
0896b752 AA |
2712 | { |
2713 | struct iscsi_transport *transport = priv->iscsi_transport; | |
7b7232f3 | 2714 | struct iscsi_cls_session *session; |
5e7facb7 | 2715 | struct Scsi_Host *shost; |
0896b752 | 2716 | |
d82ff9be | 2717 | session = transport->create_session(ep, cmds_max, queue_depth, |
5e7facb7 | 2718 | initial_cmdsn); |
7b7232f3 | 2719 | if (!session) |
7b8631b5 | 2720 | return -ENOMEM; |
0896b752 | 2721 | |
0c70d84b | 2722 | session->creator = pid; |
5e7facb7 MC |
2723 | shost = iscsi_session_to_shost(session); |
2724 | ev->r.c_session_ret.host_no = shost->host_no; | |
b5c7a12d | 2725 | ev->r.c_session_ret.sid = session->sid; |
632248aa MC |
2726 | ISCSI_DBG_TRANS_SESSION(session, |
2727 | "Completed creating transport session\n"); | |
0896b752 | 2728 | return 0; |
0896b752 AA |
2729 | } |
2730 | ||
2731 | static int | |
7b7232f3 | 2732 | iscsi_if_create_conn(struct iscsi_transport *transport, struct iscsi_uevent *ev) |
0896b752 | 2733 | { |
7b8631b5 | 2734 | struct iscsi_cls_conn *conn; |
7b7232f3 | 2735 | struct iscsi_cls_session *session; |
7b8631b5 | 2736 | |
b5c7a12d MC |
2737 | session = iscsi_session_lookup(ev->u.c_conn.sid); |
2738 | if (!session) { | |
322d739d | 2739 | printk(KERN_ERR "iscsi: invalid session %d.\n", |
b5c7a12d | 2740 | ev->u.c_conn.sid); |
7b8631b5 | 2741 | return -EINVAL; |
b5c7a12d | 2742 | } |
0896b752 | 2743 | |
7b7232f3 | 2744 | conn = transport->create_conn(session, ev->u.c_conn.cid); |
b5c7a12d | 2745 | if (!conn) { |
322d739d MC |
2746 | iscsi_cls_session_printk(KERN_ERR, session, |
2747 | "couldn't create a new connection."); | |
7b7232f3 | 2748 | return -ENOMEM; |
b5c7a12d | 2749 | } |
0896b752 | 2750 | |
b5c7a12d MC |
2751 | ev->r.c_conn_ret.sid = session->sid; |
2752 | ev->r.c_conn_ret.cid = conn->cid; | |
632248aa MC |
2753 | |
2754 | ISCSI_DBG_TRANS_CONN(conn, "Completed creating transport conn\n"); | |
0896b752 | 2755 | return 0; |
1da177e4 LT |
2756 | } |
2757 | ||
0896b752 AA |
2758 | static int |
2759 | iscsi_if_destroy_conn(struct iscsi_transport *transport, struct iscsi_uevent *ev) | |
2760 | { | |
7b8631b5 | 2761 | struct iscsi_cls_conn *conn; |
0896b752 | 2762 | |
b5c7a12d | 2763 | conn = iscsi_conn_lookup(ev->u.d_conn.sid, ev->u.d_conn.cid); |
0896b752 | 2764 | if (!conn) |
7b8631b5 | 2765 | return -EINVAL; |
0896b752 | 2766 | |
632248aa | 2767 | ISCSI_DBG_TRANS_CONN(conn, "Destroying transport conn\n"); |
7b8631b5 MC |
2768 | if (transport->destroy_conn) |
2769 | transport->destroy_conn(conn); | |
632248aa | 2770 | |
7b8631b5 | 2771 | return 0; |
0896b752 AA |
2772 | } |
2773 | ||
fd7255f5 MC |
2774 | static int |
2775 | iscsi_set_param(struct iscsi_transport *transport, struct iscsi_uevent *ev) | |
2776 | { | |
2777 | char *data = (char*)ev + sizeof(*ev); | |
2778 | struct iscsi_cls_conn *conn; | |
2779 | struct iscsi_cls_session *session; | |
a54a52ca | 2780 | int err = 0, value = 0; |
fd7255f5 MC |
2781 | |
2782 | session = iscsi_session_lookup(ev->u.set_param.sid); | |
2783 | conn = iscsi_conn_lookup(ev->u.set_param.sid, ev->u.set_param.cid); | |
2784 | if (!conn || !session) | |
2785 | return -EINVAL; | |
2786 | ||
2787 | switch (ev->u.set_param.param) { | |
30a6c652 | 2788 | case ISCSI_PARAM_SESS_RECOVERY_TMO: |
a54a52ca | 2789 | sscanf(data, "%d", &value); |
9c8108a4 CL |
2790 | if (!session->recovery_tmo_sysfs_override) |
2791 | session->recovery_tmo = value; | |
30a6c652 | 2792 | break; |
fd7255f5 | 2793 | default: |
a54a52ca MC |
2794 | err = transport->set_param(conn, ev->u.set_param.param, |
2795 | data, ev->u.set_param.len); | |
fd7255f5 MC |
2796 | } |
2797 | ||
2798 | return err; | |
2799 | } | |
2800 | ||
10eb0f01 MC |
2801 | static int iscsi_if_ep_connect(struct iscsi_transport *transport, |
2802 | struct iscsi_uevent *ev, int msg_type) | |
2803 | { | |
2804 | struct iscsi_endpoint *ep; | |
2805 | struct sockaddr *dst_addr; | |
2806 | struct Scsi_Host *shost = NULL; | |
2807 | int non_blocking, err = 0; | |
2808 | ||
2809 | if (!transport->ep_connect) | |
2810 | return -EINVAL; | |
2811 | ||
2812 | if (msg_type == ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST) { | |
2813 | shost = scsi_host_lookup(ev->u.ep_connect_through_host.host_no); | |
2814 | if (!shost) { | |
2815 | printk(KERN_ERR "ep connect failed. Could not find " | |
2816 | "host no %u\n", | |
2817 | ev->u.ep_connect_through_host.host_no); | |
2818 | return -ENODEV; | |
2819 | } | |
2820 | non_blocking = ev->u.ep_connect_through_host.non_blocking; | |
2821 | } else | |
2822 | non_blocking = ev->u.ep_connect.non_blocking; | |
2823 | ||
2824 | dst_addr = (struct sockaddr *)((char*)ev + sizeof(*ev)); | |
2825 | ep = transport->ep_connect(shost, dst_addr, non_blocking); | |
2826 | if (IS_ERR(ep)) { | |
2827 | err = PTR_ERR(ep); | |
2828 | goto release_host; | |
2829 | } | |
2830 | ||
2831 | ev->r.ep_connect_ret.handle = ep->id; | |
2832 | release_host: | |
2833 | if (shost) | |
2834 | scsi_host_put(shost); | |
2835 | return err; | |
2836 | } | |
2837 | ||
22a39fbb MC |
2838 | static int iscsi_if_ep_disconnect(struct iscsi_transport *transport, |
2839 | u64 ep_handle) | |
2840 | { | |
2841 | struct iscsi_cls_conn *conn; | |
2842 | struct iscsi_endpoint *ep; | |
2843 | ||
2844 | if (!transport->ep_disconnect) | |
2845 | return -EINVAL; | |
2846 | ||
2847 | ep = iscsi_lookup_endpoint(ep_handle); | |
2848 | if (!ep) | |
2849 | return -EINVAL; | |
2850 | conn = ep->conn; | |
2851 | if (conn) { | |
2852 | mutex_lock(&conn->ep_mutex); | |
2853 | conn->ep = NULL; | |
2854 | mutex_unlock(&conn->ep_mutex); | |
2855 | } | |
2856 | ||
2857 | transport->ep_disconnect(ep); | |
2858 | return 0; | |
2859 | } | |
2860 | ||
264faaaa OG |
2861 | static int |
2862 | iscsi_if_transport_ep(struct iscsi_transport *transport, | |
2863 | struct iscsi_uevent *ev, int msg_type) | |
2864 | { | |
d82ff9be | 2865 | struct iscsi_endpoint *ep; |
264faaaa OG |
2866 | int rc = 0; |
2867 | ||
2868 | switch (msg_type) { | |
10eb0f01 | 2869 | case ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST: |
264faaaa | 2870 | case ISCSI_UEVENT_TRANSPORT_EP_CONNECT: |
10eb0f01 | 2871 | rc = iscsi_if_ep_connect(transport, ev, msg_type); |
264faaaa OG |
2872 | break; |
2873 | case ISCSI_UEVENT_TRANSPORT_EP_POLL: | |
2874 | if (!transport->ep_poll) | |
2875 | return -EINVAL; | |
2876 | ||
d82ff9be MC |
2877 | ep = iscsi_lookup_endpoint(ev->u.ep_poll.ep_handle); |
2878 | if (!ep) | |
2879 | return -EINVAL; | |
2880 | ||
2881 | ev->r.retcode = transport->ep_poll(ep, | |
264faaaa OG |
2882 | ev->u.ep_poll.timeout_ms); |
2883 | break; | |
2884 | case ISCSI_UEVENT_TRANSPORT_EP_DISCONNECT: | |
22a39fbb MC |
2885 | rc = iscsi_if_ep_disconnect(transport, |
2886 | ev->u.ep_disconnect.ep_handle); | |
264faaaa OG |
2887 | break; |
2888 | } | |
2889 | return rc; | |
2890 | } | |
2891 | ||
01cb225d MC |
2892 | static int |
2893 | iscsi_tgt_dscvr(struct iscsi_transport *transport, | |
2894 | struct iscsi_uevent *ev) | |
2895 | { | |
2174a04e | 2896 | struct Scsi_Host *shost; |
01cb225d | 2897 | struct sockaddr *dst_addr; |
2174a04e | 2898 | int err; |
01cb225d MC |
2899 | |
2900 | if (!transport->tgt_dscvr) | |
2901 | return -EINVAL; | |
2902 | ||
2174a04e | 2903 | shost = scsi_host_lookup(ev->u.tgt_dscvr.host_no); |
315cb0ad | 2904 | if (!shost) { |
2174a04e MC |
2905 | printk(KERN_ERR "target discovery could not find host no %u\n", |
2906 | ev->u.tgt_dscvr.host_no); | |
2907 | return -ENODEV; | |
2908 | } | |
2909 | ||
2910 | ||
01cb225d | 2911 | dst_addr = (struct sockaddr *)((char*)ev + sizeof(*ev)); |
2174a04e MC |
2912 | err = transport->tgt_dscvr(shost, ev->u.tgt_dscvr.type, |
2913 | ev->u.tgt_dscvr.enable, dst_addr); | |
2914 | scsi_host_put(shost); | |
2915 | return err; | |
01cb225d MC |
2916 | } |
2917 | ||
1d9bf13a MC |
2918 | static int |
2919 | iscsi_set_host_param(struct iscsi_transport *transport, | |
2920 | struct iscsi_uevent *ev) | |
2921 | { | |
2922 | char *data = (char*)ev + sizeof(*ev); | |
2923 | struct Scsi_Host *shost; | |
2924 | int err; | |
2925 | ||
2926 | if (!transport->set_host_param) | |
2927 | return -ENOSYS; | |
2928 | ||
2929 | shost = scsi_host_lookup(ev->u.set_host_param.host_no); | |
315cb0ad | 2930 | if (!shost) { |
1d9bf13a MC |
2931 | printk(KERN_ERR "set_host_param could not find host no %u\n", |
2932 | ev->u.set_host_param.host_no); | |
2933 | return -ENODEV; | |
2934 | } | |
2935 | ||
2936 | err = transport->set_host_param(shost, ev->u.set_host_param.param, | |
2937 | data, ev->u.set_host_param.len); | |
2938 | scsi_host_put(shost); | |
2939 | return err; | |
2940 | } | |
2941 | ||
0896b752 | 2942 | static int |
43514774 MC |
2943 | iscsi_set_path(struct iscsi_transport *transport, struct iscsi_uevent *ev) |
2944 | { | |
2945 | struct Scsi_Host *shost; | |
2946 | struct iscsi_path *params; | |
2947 | int err; | |
2948 | ||
2949 | if (!transport->set_path) | |
2950 | return -ENOSYS; | |
2951 | ||
2952 | shost = scsi_host_lookup(ev->u.set_path.host_no); | |
2953 | if (!shost) { | |
2954 | printk(KERN_ERR "set path could not find host no %u\n", | |
2955 | ev->u.set_path.host_no); | |
2956 | return -ENODEV; | |
2957 | } | |
2958 | ||
2959 | params = (struct iscsi_path *)((char *)ev + sizeof(*ev)); | |
2960 | err = transport->set_path(shost, params); | |
2961 | ||
2962 | scsi_host_put(shost); | |
2963 | return err; | |
2964 | } | |
2965 | ||
56c155b5 MC |
2966 | static int |
2967 | iscsi_set_iface_params(struct iscsi_transport *transport, | |
00c31889 | 2968 | struct iscsi_uevent *ev, uint32_t len) |
56c155b5 MC |
2969 | { |
2970 | char *data = (char *)ev + sizeof(*ev); | |
2971 | struct Scsi_Host *shost; | |
2972 | int err; | |
2973 | ||
2974 | if (!transport->set_iface_param) | |
2975 | return -ENOSYS; | |
2976 | ||
2977 | shost = scsi_host_lookup(ev->u.set_iface_params.host_no); | |
2978 | if (!shost) { | |
2979 | printk(KERN_ERR "set_iface_params could not find host no %u\n", | |
2980 | ev->u.set_iface_params.host_no); | |
2981 | return -ENODEV; | |
2982 | } | |
2983 | ||
00c31889 | 2984 | err = transport->set_iface_param(shost, data, len); |
56c155b5 MC |
2985 | scsi_host_put(shost); |
2986 | return err; | |
2987 | } | |
2988 | ||
ac20c7bf VC |
2989 | static int |
2990 | iscsi_send_ping(struct iscsi_transport *transport, struct iscsi_uevent *ev) | |
2991 | { | |
2992 | struct Scsi_Host *shost; | |
2993 | struct sockaddr *dst_addr; | |
2994 | int err; | |
2995 | ||
2996 | if (!transport->send_ping) | |
2997 | return -ENOSYS; | |
2998 | ||
2999 | shost = scsi_host_lookup(ev->u.iscsi_ping.host_no); | |
3000 | if (!shost) { | |
3001 | printk(KERN_ERR "iscsi_ping could not find host no %u\n", | |
3002 | ev->u.iscsi_ping.host_no); | |
3003 | return -ENODEV; | |
3004 | } | |
3005 | ||
3006 | dst_addr = (struct sockaddr *)((char *)ev + sizeof(*ev)); | |
3007 | err = transport->send_ping(shost, ev->u.iscsi_ping.iface_num, | |
3008 | ev->u.iscsi_ping.iface_type, | |
3009 | ev->u.iscsi_ping.payload_size, | |
3010 | ev->u.iscsi_ping.pid, | |
3011 | dst_addr); | |
3012 | scsi_host_put(shost); | |
3013 | return err; | |
3014 | } | |
3015 | ||
6260a5d2 NJ |
3016 | static int |
3017 | iscsi_get_chap(struct iscsi_transport *transport, struct nlmsghdr *nlh) | |
3018 | { | |
e07ebea0 | 3019 | struct iscsi_uevent *ev = nlmsg_data(nlh); |
6260a5d2 NJ |
3020 | struct Scsi_Host *shost = NULL; |
3021 | struct iscsi_chap_rec *chap_rec; | |
3022 | struct iscsi_internal *priv; | |
3023 | struct sk_buff *skbchap; | |
3024 | struct nlmsghdr *nlhchap; | |
3025 | struct iscsi_uevent *evchap; | |
3026 | uint32_t chap_buf_size; | |
3027 | int len, err = 0; | |
3028 | char *buf; | |
3029 | ||
3030 | if (!transport->get_chap) | |
3031 | return -EINVAL; | |
3032 | ||
3033 | priv = iscsi_if_transport_lookup(transport); | |
3034 | if (!priv) | |
3035 | return -EINVAL; | |
3036 | ||
3037 | chap_buf_size = (ev->u.get_chap.num_entries * sizeof(*chap_rec)); | |
e07ebea0 | 3038 | len = nlmsg_total_size(sizeof(*ev) + chap_buf_size); |
6260a5d2 NJ |
3039 | |
3040 | shost = scsi_host_lookup(ev->u.get_chap.host_no); | |
3041 | if (!shost) { | |
804ff603 | 3042 | printk(KERN_ERR "%s: failed. Could not find host no %u\n", |
6260a5d2 NJ |
3043 | __func__, ev->u.get_chap.host_no); |
3044 | return -ENODEV; | |
3045 | } | |
3046 | ||
3047 | do { | |
3048 | int actual_size; | |
3049 | ||
3050 | skbchap = alloc_skb(len, GFP_KERNEL); | |
3051 | if (!skbchap) { | |
3052 | printk(KERN_ERR "can not deliver chap: OOM\n"); | |
3053 | err = -ENOMEM; | |
3054 | goto exit_get_chap; | |
3055 | } | |
3056 | ||
3057 | nlhchap = __nlmsg_put(skbchap, 0, 0, 0, | |
3058 | (len - sizeof(*nlhchap)), 0); | |
e07ebea0 | 3059 | evchap = nlmsg_data(nlhchap); |
6260a5d2 NJ |
3060 | memset(evchap, 0, sizeof(*evchap)); |
3061 | evchap->transport_handle = iscsi_handle(transport); | |
3062 | evchap->type = nlh->nlmsg_type; | |
3063 | evchap->u.get_chap.host_no = ev->u.get_chap.host_no; | |
3064 | evchap->u.get_chap.chap_tbl_idx = ev->u.get_chap.chap_tbl_idx; | |
3065 | evchap->u.get_chap.num_entries = ev->u.get_chap.num_entries; | |
a799cb77 | 3066 | buf = (char *)evchap + sizeof(*evchap); |
6260a5d2 NJ |
3067 | memset(buf, 0, chap_buf_size); |
3068 | ||
3069 | err = transport->get_chap(shost, ev->u.get_chap.chap_tbl_idx, | |
3070 | &evchap->u.get_chap.num_entries, buf); | |
3071 | ||
e07ebea0 | 3072 | actual_size = nlmsg_total_size(sizeof(*ev) + chap_buf_size); |
6260a5d2 NJ |
3073 | skb_trim(skbchap, NLMSG_ALIGN(actual_size)); |
3074 | nlhchap->nlmsg_len = actual_size; | |
3075 | ||
3076 | err = iscsi_multicast_skb(skbchap, ISCSI_NL_GRP_ISCSID, | |
3077 | GFP_KERNEL); | |
3078 | } while (err < 0 && err != -ECONNREFUSED); | |
3079 | ||
3080 | exit_get_chap: | |
3081 | scsi_host_put(shost); | |
3082 | return err; | |
3083 | } | |
3084 | ||
3af142fe AC |
3085 | static int iscsi_set_chap(struct iscsi_transport *transport, |
3086 | struct iscsi_uevent *ev, uint32_t len) | |
3087 | { | |
3088 | char *data = (char *)ev + sizeof(*ev); | |
3089 | struct Scsi_Host *shost; | |
3090 | int err = 0; | |
3091 | ||
3092 | if (!transport->set_chap) | |
3093 | return -ENOSYS; | |
3094 | ||
3095 | shost = scsi_host_lookup(ev->u.set_path.host_no); | |
3096 | if (!shost) { | |
3097 | pr_err("%s could not find host no %u\n", | |
3098 | __func__, ev->u.set_path.host_no); | |
3099 | return -ENODEV; | |
3100 | } | |
3101 | ||
3102 | err = transport->set_chap(shost, data, len); | |
3103 | scsi_host_put(shost); | |
3104 | return err; | |
3105 | } | |
3106 | ||
6260a5d2 NJ |
3107 | static int iscsi_delete_chap(struct iscsi_transport *transport, |
3108 | struct iscsi_uevent *ev) | |
3109 | { | |
3110 | struct Scsi_Host *shost; | |
3111 | int err = 0; | |
3112 | ||
3113 | if (!transport->delete_chap) | |
3114 | return -ENOSYS; | |
3115 | ||
3116 | shost = scsi_host_lookup(ev->u.delete_chap.host_no); | |
3117 | if (!shost) { | |
3118 | printk(KERN_ERR "%s could not find host no %u\n", | |
3119 | __func__, ev->u.delete_chap.host_no); | |
3120 | return -ENODEV; | |
3121 | } | |
3122 | ||
3123 | err = transport->delete_chap(shost, ev->u.delete_chap.chap_tbl_idx); | |
3124 | scsi_host_put(shost); | |
3125 | return err; | |
3126 | } | |
3127 | ||
c6a4bb2e AC |
3128 | static const struct { |
3129 | enum iscsi_discovery_parent_type value; | |
3130 | char *name; | |
3131 | } iscsi_discovery_parent_names[] = { | |
3132 | {ISCSI_DISC_PARENT_UNKNOWN, "Unknown" }, | |
3133 | {ISCSI_DISC_PARENT_SENDTGT, "Sendtarget" }, | |
3134 | {ISCSI_DISC_PARENT_ISNS, "isns" }, | |
3135 | }; | |
3136 | ||
3137 | char *iscsi_get_discovery_parent_name(int parent_type) | |
3138 | { | |
3139 | int i; | |
3140 | char *state = "Unknown!"; | |
3141 | ||
3142 | for (i = 0; i < ARRAY_SIZE(iscsi_discovery_parent_names); i++) { | |
3143 | if (iscsi_discovery_parent_names[i].value & parent_type) { | |
3144 | state = iscsi_discovery_parent_names[i].name; | |
3145 | break; | |
3146 | } | |
3147 | } | |
3148 | return state; | |
3149 | } | |
3150 | EXPORT_SYMBOL_GPL(iscsi_get_discovery_parent_name); | |
3151 | ||
3152 | static int iscsi_set_flashnode_param(struct iscsi_transport *transport, | |
3153 | struct iscsi_uevent *ev, uint32_t len) | |
3154 | { | |
3155 | char *data = (char *)ev + sizeof(*ev); | |
3156 | struct Scsi_Host *shost; | |
3157 | struct iscsi_bus_flash_session *fnode_sess; | |
3158 | struct iscsi_bus_flash_conn *fnode_conn; | |
3159 | struct device *dev; | |
8526cb11 | 3160 | uint32_t idx; |
c6a4bb2e AC |
3161 | int err = 0; |
3162 | ||
3163 | if (!transport->set_flashnode_param) { | |
3164 | err = -ENOSYS; | |
3165 | goto exit_set_fnode; | |
3166 | } | |
3167 | ||
3168 | shost = scsi_host_lookup(ev->u.set_flashnode.host_no); | |
3169 | if (!shost) { | |
3170 | pr_err("%s could not find host no %u\n", | |
3171 | __func__, ev->u.set_flashnode.host_no); | |
3172 | err = -ENODEV; | |
3173 | goto put_host; | |
3174 | } | |
3175 | ||
8526cb11 MC |
3176 | idx = ev->u.set_flashnode.flashnode_idx; |
3177 | fnode_sess = iscsi_get_flashnode_by_index(shost, idx); | |
c6a4bb2e AC |
3178 | if (!fnode_sess) { |
3179 | pr_err("%s could not find flashnode %u for host no %u\n", | |
8526cb11 | 3180 | __func__, idx, ev->u.set_flashnode.host_no); |
c6a4bb2e AC |
3181 | err = -ENODEV; |
3182 | goto put_host; | |
3183 | } | |
3184 | ||
8526cb11 | 3185 | dev = iscsi_find_flashnode_conn(fnode_sess); |
c6a4bb2e AC |
3186 | if (!dev) { |
3187 | err = -ENODEV; | |
8526cb11 | 3188 | goto put_sess; |
c6a4bb2e AC |
3189 | } |
3190 | ||
3191 | fnode_conn = iscsi_dev_to_flash_conn(dev); | |
3192 | err = transport->set_flashnode_param(fnode_sess, fnode_conn, data, len); | |
8526cb11 MC |
3193 | put_device(dev); |
3194 | ||
3195 | put_sess: | |
3196 | put_device(&fnode_sess->dev); | |
c6a4bb2e AC |
3197 | |
3198 | put_host: | |
3199 | scsi_host_put(shost); | |
3200 | ||
3201 | exit_set_fnode: | |
3202 | return err; | |
3203 | } | |
3204 | ||
3205 | static int iscsi_new_flashnode(struct iscsi_transport *transport, | |
3206 | struct iscsi_uevent *ev, uint32_t len) | |
3207 | { | |
3208 | char *data = (char *)ev + sizeof(*ev); | |
3209 | struct Scsi_Host *shost; | |
3210 | int index; | |
3211 | int err = 0; | |
3212 | ||
3213 | if (!transport->new_flashnode) { | |
3214 | err = -ENOSYS; | |
3215 | goto exit_new_fnode; | |
3216 | } | |
3217 | ||
3218 | shost = scsi_host_lookup(ev->u.new_flashnode.host_no); | |
3219 | if (!shost) { | |
3220 | pr_err("%s could not find host no %u\n", | |
3221 | __func__, ev->u.new_flashnode.host_no); | |
3222 | err = -ENODEV; | |
3223 | goto put_host; | |
3224 | } | |
3225 | ||
3226 | index = transport->new_flashnode(shost, data, len); | |
3227 | ||
3228 | if (index >= 0) | |
3229 | ev->r.new_flashnode_ret.flashnode_idx = index; | |
3230 | else | |
3231 | err = -EIO; | |
3232 | ||
3233 | put_host: | |
3234 | scsi_host_put(shost); | |
3235 | ||
3236 | exit_new_fnode: | |
3237 | return err; | |
3238 | } | |
3239 | ||
3240 | static int iscsi_del_flashnode(struct iscsi_transport *transport, | |
3241 | struct iscsi_uevent *ev) | |
3242 | { | |
3243 | struct Scsi_Host *shost; | |
3244 | struct iscsi_bus_flash_session *fnode_sess; | |
8526cb11 | 3245 | uint32_t idx; |
c6a4bb2e AC |
3246 | int err = 0; |
3247 | ||
3248 | if (!transport->del_flashnode) { | |
3249 | err = -ENOSYS; | |
3250 | goto exit_del_fnode; | |
3251 | } | |
3252 | ||
3253 | shost = scsi_host_lookup(ev->u.del_flashnode.host_no); | |
3254 | if (!shost) { | |
3255 | pr_err("%s could not find host no %u\n", | |
3256 | __func__, ev->u.del_flashnode.host_no); | |
3257 | err = -ENODEV; | |
3258 | goto put_host; | |
3259 | } | |
3260 | ||
8526cb11 MC |
3261 | idx = ev->u.del_flashnode.flashnode_idx; |
3262 | fnode_sess = iscsi_get_flashnode_by_index(shost, idx); | |
c6a4bb2e AC |
3263 | if (!fnode_sess) { |
3264 | pr_err("%s could not find flashnode %u for host no %u\n", | |
8526cb11 | 3265 | __func__, idx, ev->u.del_flashnode.host_no); |
c6a4bb2e AC |
3266 | err = -ENODEV; |
3267 | goto put_host; | |
3268 | } | |
3269 | ||
3270 | err = transport->del_flashnode(fnode_sess); | |
8526cb11 | 3271 | put_device(&fnode_sess->dev); |
c6a4bb2e AC |
3272 | |
3273 | put_host: | |
3274 | scsi_host_put(shost); | |
3275 | ||
3276 | exit_del_fnode: | |
3277 | return err; | |
3278 | } | |
3279 | ||
3280 | static int iscsi_login_flashnode(struct iscsi_transport *transport, | |
3281 | struct iscsi_uevent *ev) | |
3282 | { | |
3283 | struct Scsi_Host *shost; | |
3284 | struct iscsi_bus_flash_session *fnode_sess; | |
3285 | struct iscsi_bus_flash_conn *fnode_conn; | |
3286 | struct device *dev; | |
8526cb11 | 3287 | uint32_t idx; |
c6a4bb2e AC |
3288 | int err = 0; |
3289 | ||
3290 | if (!transport->login_flashnode) { | |
3291 | err = -ENOSYS; | |
3292 | goto exit_login_fnode; | |
3293 | } | |
3294 | ||
3295 | shost = scsi_host_lookup(ev->u.login_flashnode.host_no); | |
3296 | if (!shost) { | |
3297 | pr_err("%s could not find host no %u\n", | |
3298 | __func__, ev->u.login_flashnode.host_no); | |
3299 | err = -ENODEV; | |
3300 | goto put_host; | |
3301 | } | |
3302 | ||
8526cb11 MC |
3303 | idx = ev->u.login_flashnode.flashnode_idx; |
3304 | fnode_sess = iscsi_get_flashnode_by_index(shost, idx); | |
c6a4bb2e AC |
3305 | if (!fnode_sess) { |
3306 | pr_err("%s could not find flashnode %u for host no %u\n", | |
8526cb11 | 3307 | __func__, idx, ev->u.login_flashnode.host_no); |
c6a4bb2e AC |
3308 | err = -ENODEV; |
3309 | goto put_host; | |
3310 | } | |
3311 | ||
8526cb11 | 3312 | dev = iscsi_find_flashnode_conn(fnode_sess); |
c6a4bb2e AC |
3313 | if (!dev) { |
3314 | err = -ENODEV; | |
8526cb11 | 3315 | goto put_sess; |
c6a4bb2e AC |
3316 | } |
3317 | ||
3318 | fnode_conn = iscsi_dev_to_flash_conn(dev); | |
3319 | err = transport->login_flashnode(fnode_sess, fnode_conn); | |
8526cb11 MC |
3320 | put_device(dev); |
3321 | ||
3322 | put_sess: | |
3323 | put_device(&fnode_sess->dev); | |
c6a4bb2e AC |
3324 | |
3325 | put_host: | |
3326 | scsi_host_put(shost); | |
3327 | ||
3328 | exit_login_fnode: | |
3329 | return err; | |
3330 | } | |
3331 | ||
3332 | static int iscsi_logout_flashnode(struct iscsi_transport *transport, | |
3333 | struct iscsi_uevent *ev) | |
3334 | { | |
3335 | struct Scsi_Host *shost; | |
3336 | struct iscsi_bus_flash_session *fnode_sess; | |
3337 | struct iscsi_bus_flash_conn *fnode_conn; | |
3338 | struct device *dev; | |
8526cb11 | 3339 | uint32_t idx; |
c6a4bb2e AC |
3340 | int err = 0; |
3341 | ||
3342 | if (!transport->logout_flashnode) { | |
3343 | err = -ENOSYS; | |
3344 | goto exit_logout_fnode; | |
3345 | } | |
3346 | ||
3347 | shost = scsi_host_lookup(ev->u.logout_flashnode.host_no); | |
3348 | if (!shost) { | |
3349 | pr_err("%s could not find host no %u\n", | |
3350 | __func__, ev->u.logout_flashnode.host_no); | |
3351 | err = -ENODEV; | |
3352 | goto put_host; | |
3353 | } | |
3354 | ||
8526cb11 MC |
3355 | idx = ev->u.logout_flashnode.flashnode_idx; |
3356 | fnode_sess = iscsi_get_flashnode_by_index(shost, idx); | |
c6a4bb2e AC |
3357 | if (!fnode_sess) { |
3358 | pr_err("%s could not find flashnode %u for host no %u\n", | |
8526cb11 | 3359 | __func__, idx, ev->u.logout_flashnode.host_no); |
c6a4bb2e AC |
3360 | err = -ENODEV; |
3361 | goto put_host; | |
3362 | } | |
3363 | ||
8526cb11 | 3364 | dev = iscsi_find_flashnode_conn(fnode_sess); |
c6a4bb2e AC |
3365 | if (!dev) { |
3366 | err = -ENODEV; | |
8526cb11 | 3367 | goto put_sess; |
c6a4bb2e AC |
3368 | } |
3369 | ||
3370 | fnode_conn = iscsi_dev_to_flash_conn(dev); | |
3371 | ||
3372 | err = transport->logout_flashnode(fnode_sess, fnode_conn); | |
8526cb11 MC |
3373 | put_device(dev); |
3374 | ||
3375 | put_sess: | |
3376 | put_device(&fnode_sess->dev); | |
c6a4bb2e AC |
3377 | |
3378 | put_host: | |
3379 | scsi_host_put(shost); | |
3380 | ||
3381 | exit_logout_fnode: | |
3382 | return err; | |
3383 | } | |
3384 | ||
3385 | static int iscsi_logout_flashnode_sid(struct iscsi_transport *transport, | |
3386 | struct iscsi_uevent *ev) | |
3387 | { | |
3388 | struct Scsi_Host *shost; | |
3389 | struct iscsi_cls_session *session; | |
3390 | int err = 0; | |
3391 | ||
3392 | if (!transport->logout_flashnode_sid) { | |
3393 | err = -ENOSYS; | |
3394 | goto exit_logout_sid; | |
3395 | } | |
3396 | ||
3397 | shost = scsi_host_lookup(ev->u.logout_flashnode_sid.host_no); | |
3398 | if (!shost) { | |
3399 | pr_err("%s could not find host no %u\n", | |
3400 | __func__, ev->u.logout_flashnode.host_no); | |
3401 | err = -ENODEV; | |
3402 | goto put_host; | |
3403 | } | |
3404 | ||
3405 | session = iscsi_session_lookup(ev->u.logout_flashnode_sid.sid); | |
3406 | if (!session) { | |
3407 | pr_err("%s could not find session id %u\n", | |
3408 | __func__, ev->u.logout_flashnode_sid.sid); | |
3409 | err = -EINVAL; | |
3410 | goto put_host; | |
3411 | } | |
3412 | ||
3413 | err = transport->logout_flashnode_sid(session); | |
3414 | ||
3415 | put_host: | |
3416 | scsi_host_put(shost); | |
3417 | ||
3418 | exit_logout_sid: | |
3419 | return err; | |
3420 | } | |
3421 | ||
6fa7c554 LC |
3422 | static int |
3423 | iscsi_get_host_stats(struct iscsi_transport *transport, struct nlmsghdr *nlh) | |
3424 | { | |
3425 | struct iscsi_uevent *ev = nlmsg_data(nlh); | |
3426 | struct Scsi_Host *shost = NULL; | |
3427 | struct iscsi_internal *priv; | |
3428 | struct sk_buff *skbhost_stats; | |
3429 | struct nlmsghdr *nlhhost_stats; | |
3430 | struct iscsi_uevent *evhost_stats; | |
3431 | int host_stats_size = 0; | |
3432 | int len, err = 0; | |
3433 | char *buf; | |
3434 | ||
3435 | if (!transport->get_host_stats) | |
719e5874 | 3436 | return -ENOSYS; |
6fa7c554 LC |
3437 | |
3438 | priv = iscsi_if_transport_lookup(transport); | |
3439 | if (!priv) | |
3440 | return -EINVAL; | |
3441 | ||
3442 | host_stats_size = sizeof(struct iscsi_offload_host_stats); | |
3443 | len = nlmsg_total_size(sizeof(*ev) + host_stats_size); | |
3444 | ||
3445 | shost = scsi_host_lookup(ev->u.get_host_stats.host_no); | |
3446 | if (!shost) { | |
3447 | pr_err("%s: failed. Cound not find host no %u\n", | |
3448 | __func__, ev->u.get_host_stats.host_no); | |
3449 | return -ENODEV; | |
3450 | } | |
3451 | ||
3452 | do { | |
3453 | int actual_size; | |
3454 | ||
3455 | skbhost_stats = alloc_skb(len, GFP_KERNEL); | |
3456 | if (!skbhost_stats) { | |
3457 | pr_err("cannot deliver host stats: OOM\n"); | |
3458 | err = -ENOMEM; | |
3459 | goto exit_host_stats; | |
3460 | } | |
3461 | ||
3462 | nlhhost_stats = __nlmsg_put(skbhost_stats, 0, 0, 0, | |
3463 | (len - sizeof(*nlhhost_stats)), 0); | |
3464 | evhost_stats = nlmsg_data(nlhhost_stats); | |
3465 | memset(evhost_stats, 0, sizeof(*evhost_stats)); | |
3466 | evhost_stats->transport_handle = iscsi_handle(transport); | |
3467 | evhost_stats->type = nlh->nlmsg_type; | |
3468 | evhost_stats->u.get_host_stats.host_no = | |
3469 | ev->u.get_host_stats.host_no; | |
a799cb77 | 3470 | buf = (char *)evhost_stats + sizeof(*evhost_stats); |
6fa7c554 LC |
3471 | memset(buf, 0, host_stats_size); |
3472 | ||
3473 | err = transport->get_host_stats(shost, buf, host_stats_size); | |
2f7608fc | 3474 | if (err) { |
bfb50879 | 3475 | kfree_skb(skbhost_stats); |
2f7608fc MC |
3476 | goto exit_host_stats; |
3477 | } | |
6fa7c554 LC |
3478 | |
3479 | actual_size = nlmsg_total_size(sizeof(*ev) + host_stats_size); | |
3480 | skb_trim(skbhost_stats, NLMSG_ALIGN(actual_size)); | |
3481 | nlhhost_stats->nlmsg_len = actual_size; | |
3482 | ||
3483 | err = iscsi_multicast_skb(skbhost_stats, ISCSI_NL_GRP_ISCSID, | |
3484 | GFP_KERNEL); | |
3485 | } while (err < 0 && err != -ECONNREFUSED); | |
3486 | ||
3487 | exit_host_stats: | |
3488 | scsi_host_put(shost); | |
3489 | return err; | |
3490 | } | |
3491 | ||
3492 | ||
43514774 MC |
3493 | static int |
3494 | iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group) | |
0896b752 AA |
3495 | { |
3496 | int err = 0; | |
e07ebea0 | 3497 | struct iscsi_uevent *ev = nlmsg_data(nlh); |
0896b752 AA |
3498 | struct iscsi_transport *transport = NULL; |
3499 | struct iscsi_internal *priv; | |
7b7232f3 MC |
3500 | struct iscsi_cls_session *session; |
3501 | struct iscsi_cls_conn *conn; | |
d82ff9be | 3502 | struct iscsi_endpoint *ep = NULL; |
0896b752 | 3503 | |
43514774 MC |
3504 | if (nlh->nlmsg_type == ISCSI_UEVENT_PATH_UPDATE) |
3505 | *group = ISCSI_NL_GRP_UIP; | |
3506 | else | |
3507 | *group = ISCSI_NL_GRP_ISCSID; | |
3508 | ||
0896b752 AA |
3509 | priv = iscsi_if_transport_lookup(iscsi_ptr(ev->transport_handle)); |
3510 | if (!priv) | |
3511 | return -EINVAL; | |
3512 | transport = priv->iscsi_transport; | |
3513 | ||
7b7232f3 MC |
3514 | if (!try_module_get(transport->owner)) |
3515 | return -EINVAL; | |
3516 | ||
0896b752 AA |
3517 | switch (nlh->nlmsg_type) { |
3518 | case ISCSI_UEVENT_CREATE_SESSION: | |
d82ff9be | 3519 | err = iscsi_if_create_session(priv, ep, ev, |
15e47304 | 3520 | NETLINK_CB(skb).portid, |
40753caa MC |
3521 | ev->u.c_session.initial_cmdsn, |
3522 | ev->u.c_session.cmds_max, | |
3523 | ev->u.c_session.queue_depth); | |
3524 | break; | |
3525 | case ISCSI_UEVENT_CREATE_BOUND_SESSION: | |
d82ff9be | 3526 | ep = iscsi_lookup_endpoint(ev->u.c_bound_session.ep_handle); |
c95fddc7 MC |
3527 | if (!ep) { |
3528 | err = -EINVAL; | |
3529 | break; | |
3530 | } | |
d82ff9be MC |
3531 | |
3532 | err = iscsi_if_create_session(priv, ep, ev, | |
15e47304 | 3533 | NETLINK_CB(skb).portid, |
40753caa MC |
3534 | ev->u.c_bound_session.initial_cmdsn, |
3535 | ev->u.c_bound_session.cmds_max, | |
3536 | ev->u.c_bound_session.queue_depth); | |
0896b752 AA |
3537 | break; |
3538 | case ISCSI_UEVENT_DESTROY_SESSION: | |
b5c7a12d | 3539 | session = iscsi_session_lookup(ev->u.d_session.sid); |
26974789 | 3540 | if (session) |
7b7232f3 | 3541 | transport->destroy_session(session); |
26974789 MC |
3542 | else |
3543 | err = -EINVAL; | |
3544 | break; | |
3545 | case ISCSI_UEVENT_UNBIND_SESSION: | |
3546 | session = iscsi_session_lookup(ev->u.d_session.sid); | |
3547 | if (session) | |
06d25af4 MC |
3548 | scsi_queue_work(iscsi_session_to_shost(session), |
3549 | &session->unbind_work); | |
26974789 | 3550 | else |
7b7232f3 | 3551 | err = -EINVAL; |
0896b752 AA |
3552 | break; |
3553 | case ISCSI_UEVENT_CREATE_CONN: | |
3554 | err = iscsi_if_create_conn(transport, ev); | |
3555 | break; | |
3556 | case ISCSI_UEVENT_DESTROY_CONN: | |
3557 | err = iscsi_if_destroy_conn(transport, ev); | |
3558 | break; | |
3559 | case ISCSI_UEVENT_BIND_CONN: | |
b5c7a12d MC |
3560 | session = iscsi_session_lookup(ev->u.b_conn.sid); |
3561 | conn = iscsi_conn_lookup(ev->u.b_conn.sid, ev->u.b_conn.cid); | |
7b7232f3 | 3562 | |
22a39fbb MC |
3563 | if (conn && conn->ep) |
3564 | iscsi_if_ep_disconnect(transport, conn->ep->id); | |
3565 | ||
3566 | if (!session || !conn) { | |
7b7232f3 | 3567 | err = -EINVAL; |
22a39fbb MC |
3568 | break; |
3569 | } | |
3570 | ||
3571 | ev->r.retcode = transport->bind_conn(session, conn, | |
3572 | ev->u.b_conn.transport_eph, | |
3573 | ev->u.b_conn.is_leading); | |
3574 | if (ev->r.retcode || !transport->ep_connect) | |
3575 | break; | |
3576 | ||
3577 | ep = iscsi_lookup_endpoint(ev->u.b_conn.transport_eph); | |
3578 | if (ep) { | |
3579 | ep->conn = conn; | |
3580 | ||
3581 | mutex_lock(&conn->ep_mutex); | |
3582 | conn->ep = ep; | |
3583 | mutex_unlock(&conn->ep_mutex); | |
3584 | } else | |
3585 | iscsi_cls_conn_printk(KERN_ERR, conn, | |
3586 | "Could not set ep conn " | |
3587 | "binding\n"); | |
0896b752 AA |
3588 | break; |
3589 | case ISCSI_UEVENT_SET_PARAM: | |
fd7255f5 | 3590 | err = iscsi_set_param(transport, ev); |
0896b752 AA |
3591 | break; |
3592 | case ISCSI_UEVENT_START_CONN: | |
b5c7a12d | 3593 | conn = iscsi_conn_lookup(ev->u.start_conn.sid, ev->u.start_conn.cid); |
7b7232f3 MC |
3594 | if (conn) |
3595 | ev->r.retcode = transport->start_conn(conn); | |
3596 | else | |
3597 | err = -EINVAL; | |
0896b752 AA |
3598 | break; |
3599 | case ISCSI_UEVENT_STOP_CONN: | |
b5c7a12d | 3600 | conn = iscsi_conn_lookup(ev->u.stop_conn.sid, ev->u.stop_conn.cid); |
7b7232f3 MC |
3601 | if (conn) |
3602 | transport->stop_conn(conn, ev->u.stop_conn.flag); | |
3603 | else | |
3604 | err = -EINVAL; | |
0896b752 AA |
3605 | break; |
3606 | case ISCSI_UEVENT_SEND_PDU: | |
b5c7a12d | 3607 | conn = iscsi_conn_lookup(ev->u.send_pdu.sid, ev->u.send_pdu.cid); |
7b7232f3 MC |
3608 | if (conn) |
3609 | ev->r.retcode = transport->send_pdu(conn, | |
3610 | (struct iscsi_hdr*)((char*)ev + sizeof(*ev)), | |
3611 | (char*)ev + sizeof(*ev) + ev->u.send_pdu.hdr_size, | |
3612 | ev->u.send_pdu.data_size); | |
3613 | else | |
3614 | err = -EINVAL; | |
0896b752 AA |
3615 | break; |
3616 | case ISCSI_UEVENT_GET_STATS: | |
5b940adf | 3617 | err = iscsi_if_get_stats(transport, nlh); |
0896b752 | 3618 | break; |
264faaaa OG |
3619 | case ISCSI_UEVENT_TRANSPORT_EP_CONNECT: |
3620 | case ISCSI_UEVENT_TRANSPORT_EP_POLL: | |
3621 | case ISCSI_UEVENT_TRANSPORT_EP_DISCONNECT: | |
10eb0f01 | 3622 | case ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST: |
264faaaa OG |
3623 | err = iscsi_if_transport_ep(transport, ev, nlh->nlmsg_type); |
3624 | break; | |
01cb225d MC |
3625 | case ISCSI_UEVENT_TGT_DSCVR: |
3626 | err = iscsi_tgt_dscvr(transport, ev); | |
3627 | break; | |
1d9bf13a MC |
3628 | case ISCSI_UEVENT_SET_HOST_PARAM: |
3629 | err = iscsi_set_host_param(transport, ev); | |
3630 | break; | |
43514774 MC |
3631 | case ISCSI_UEVENT_PATH_UPDATE: |
3632 | err = iscsi_set_path(transport, ev); | |
3633 | break; | |
56c155b5 | 3634 | case ISCSI_UEVENT_SET_IFACE_PARAMS: |
00c31889 MC |
3635 | err = iscsi_set_iface_params(transport, ev, |
3636 | nlmsg_attrlen(nlh, sizeof(*ev))); | |
56c155b5 | 3637 | break; |
ac20c7bf VC |
3638 | case ISCSI_UEVENT_PING: |
3639 | err = iscsi_send_ping(transport, ev); | |
3640 | break; | |
6260a5d2 NJ |
3641 | case ISCSI_UEVENT_GET_CHAP: |
3642 | err = iscsi_get_chap(transport, nlh); | |
3643 | break; | |
3644 | case ISCSI_UEVENT_DELETE_CHAP: | |
3645 | err = iscsi_delete_chap(transport, ev); | |
3646 | break; | |
c6a4bb2e AC |
3647 | case ISCSI_UEVENT_SET_FLASHNODE_PARAMS: |
3648 | err = iscsi_set_flashnode_param(transport, ev, | |
3649 | nlmsg_attrlen(nlh, | |
3650 | sizeof(*ev))); | |
3651 | break; | |
3652 | case ISCSI_UEVENT_NEW_FLASHNODE: | |
3653 | err = iscsi_new_flashnode(transport, ev, | |
3654 | nlmsg_attrlen(nlh, sizeof(*ev))); | |
3655 | break; | |
3656 | case ISCSI_UEVENT_DEL_FLASHNODE: | |
3657 | err = iscsi_del_flashnode(transport, ev); | |
3658 | break; | |
3659 | case ISCSI_UEVENT_LOGIN_FLASHNODE: | |
3660 | err = iscsi_login_flashnode(transport, ev); | |
3661 | break; | |
3662 | case ISCSI_UEVENT_LOGOUT_FLASHNODE: | |
3663 | err = iscsi_logout_flashnode(transport, ev); | |
3664 | break; | |
3665 | case ISCSI_UEVENT_LOGOUT_FLASHNODE_SID: | |
3666 | err = iscsi_logout_flashnode_sid(transport, ev); | |
3667 | break; | |
3af142fe AC |
3668 | case ISCSI_UEVENT_SET_CHAP: |
3669 | err = iscsi_set_chap(transport, ev, | |
3670 | nlmsg_attrlen(nlh, sizeof(*ev))); | |
3671 | break; | |
6fa7c554 LC |
3672 | case ISCSI_UEVENT_GET_HOST_STATS: |
3673 | err = iscsi_get_host_stats(transport, nlh); | |
3674 | break; | |
0896b752 | 3675 | default: |
1d9bf13a | 3676 | err = -ENOSYS; |
0896b752 AA |
3677 | break; |
3678 | } | |
3679 | ||
7b7232f3 | 3680 | module_put(transport->owner); |
0896b752 AA |
3681 | return err; |
3682 | } | |
3683 | ||
b5c7a12d | 3684 | /* |
cd40b7d3 DL |
3685 | * Get message from skb. Each message is processed by iscsi_if_recv_msg. |
3686 | * Malformed skbs with wrong lengths or invalid creds are not processed. | |
b5c7a12d | 3687 | */ |
0896b752 | 3688 | static void |
cd40b7d3 | 3689 | iscsi_if_rx(struct sk_buff *skb) |
0896b752 | 3690 | { |
0b950672 | 3691 | mutex_lock(&rx_queue_mutex); |
e07ebea0 | 3692 | while (skb->len >= NLMSG_HDRLEN) { |
cd40b7d3 DL |
3693 | int err; |
3694 | uint32_t rlen; | |
3695 | struct nlmsghdr *nlh; | |
3696 | struct iscsi_uevent *ev; | |
43514774 | 3697 | uint32_t group; |
cd40b7d3 DL |
3698 | |
3699 | nlh = nlmsg_hdr(skb); | |
3700 | if (nlh->nlmsg_len < sizeof(*nlh) || | |
3701 | skb->len < nlh->nlmsg_len) { | |
3702 | break; | |
ee7f8e40 | 3703 | } |
ee7f8e40 | 3704 | |
e07ebea0 | 3705 | ev = nlmsg_data(nlh); |
cd40b7d3 DL |
3706 | rlen = NLMSG_ALIGN(nlh->nlmsg_len); |
3707 | if (rlen > skb->len) | |
3708 | rlen = skb->len; | |
0896b752 | 3709 | |
43514774 | 3710 | err = iscsi_if_recv_msg(skb, nlh, &group); |
cd40b7d3 DL |
3711 | if (err) { |
3712 | ev->type = ISCSI_KEVENT_IF_ERROR; | |
3713 | ev->iferror = err; | |
0896b752 | 3714 | } |
cd40b7d3 DL |
3715 | do { |
3716 | /* | |
3717 | * special case for GET_STATS: | |
3718 | * on success - sending reply and stats from | |
3719 | * inside of if_recv_msg(), | |
3720 | * on error - fall through. | |
3721 | */ | |
3722 | if (ev->type == ISCSI_UEVENT_GET_STATS && !err) | |
3723 | break; | |
6260a5d2 NJ |
3724 | if (ev->type == ISCSI_UEVENT_GET_CHAP && !err) |
3725 | break; | |
43514774 | 3726 | err = iscsi_if_send_reply(group, nlh->nlmsg_seq, |
cd40b7d3 | 3727 | nlh->nlmsg_type, 0, 0, ev, sizeof(*ev)); |
46a7c17d | 3728 | } while (err < 0 && err != -ECONNREFUSED && err != -ESRCH); |
cd40b7d3 | 3729 | skb_pull(skb, rlen); |
0896b752 | 3730 | } |
0b950672 | 3731 | mutex_unlock(&rx_queue_mutex); |
0896b752 | 3732 | } |
1da177e4 | 3733 | |
fd7255f5 | 3734 | #define ISCSI_CLASS_ATTR(_prefix,_name,_mode,_show,_store) \ |
ee959b00 | 3735 | struct device_attribute dev_attr_##_prefix##_##_name = \ |
fd7255f5 MC |
3736 | __ATTR(_name,_mode,_show,_store) |
3737 | ||
1da177e4 | 3738 | /* |
0896b752 | 3739 | * iSCSI connection attrs |
1da177e4 | 3740 | */ |
a54a52ca | 3741 | #define iscsi_conn_attr_show(param) \ |
0896b752 | 3742 | static ssize_t \ |
ee959b00 TJ |
3743 | show_conn_param_##param(struct device *dev, \ |
3744 | struct device_attribute *attr, char *buf) \ | |
0896b752 | 3745 | { \ |
ee959b00 | 3746 | struct iscsi_cls_conn *conn = iscsi_dev_to_conn(dev->parent); \ |
7b8631b5 | 3747 | struct iscsi_transport *t = conn->transport; \ |
a54a52ca | 3748 | return t->get_conn_param(conn, param, buf); \ |
0896b752 AA |
3749 | } |
3750 | ||
a54a52ca MC |
3751 | #define iscsi_conn_attr(field, param) \ |
3752 | iscsi_conn_attr_show(param) \ | |
3753 | static ISCSI_CLASS_ATTR(conn, field, S_IRUGO, show_conn_param_##param, \ | |
fd7255f5 | 3754 | NULL); |
0896b752 | 3755 | |
a54a52ca MC |
3756 | iscsi_conn_attr(max_recv_dlength, ISCSI_PARAM_MAX_RECV_DLENGTH); |
3757 | iscsi_conn_attr(max_xmit_dlength, ISCSI_PARAM_MAX_XMIT_DLENGTH); | |
3758 | iscsi_conn_attr(header_digest, ISCSI_PARAM_HDRDGST_EN); | |
3759 | iscsi_conn_attr(data_digest, ISCSI_PARAM_DATADGST_EN); | |
3760 | iscsi_conn_attr(ifmarker, ISCSI_PARAM_IFMARKER_EN); | |
3761 | iscsi_conn_attr(ofmarker, ISCSI_PARAM_OFMARKER_EN); | |
3762 | iscsi_conn_attr(persistent_port, ISCSI_PARAM_PERSISTENT_PORT); | |
a54a52ca MC |
3763 | iscsi_conn_attr(exp_statsn, ISCSI_PARAM_EXP_STATSN); |
3764 | iscsi_conn_attr(persistent_address, ISCSI_PARAM_PERSISTENT_ADDRESS); | |
f6d5180c MC |
3765 | iscsi_conn_attr(ping_tmo, ISCSI_PARAM_PING_TMO); |
3766 | iscsi_conn_attr(recv_tmo, ISCSI_PARAM_RECV_TMO); | |
ae542edb AC |
3767 | iscsi_conn_attr(local_port, ISCSI_PARAM_LOCAL_PORT); |
3768 | iscsi_conn_attr(statsn, ISCSI_PARAM_STATSN); | |
3769 | iscsi_conn_attr(keepalive_tmo, ISCSI_PARAM_KEEPALIVE_TMO); | |
3770 | iscsi_conn_attr(max_segment_size, ISCSI_PARAM_MAX_SEGMENT_SIZE); | |
3771 | iscsi_conn_attr(tcp_timestamp_stat, ISCSI_PARAM_TCP_TIMESTAMP_STAT); | |
3772 | iscsi_conn_attr(tcp_wsf_disable, ISCSI_PARAM_TCP_WSF_DISABLE); | |
3773 | iscsi_conn_attr(tcp_nagle_disable, ISCSI_PARAM_TCP_NAGLE_DISABLE); | |
3774 | iscsi_conn_attr(tcp_timer_scale, ISCSI_PARAM_TCP_TIMER_SCALE); | |
3775 | iscsi_conn_attr(tcp_timestamp_enable, ISCSI_PARAM_TCP_TIMESTAMP_EN); | |
3776 | iscsi_conn_attr(fragment_disable, ISCSI_PARAM_IP_FRAGMENT_DISABLE); | |
3777 | iscsi_conn_attr(ipv4_tos, ISCSI_PARAM_IPV4_TOS); | |
3778 | iscsi_conn_attr(ipv6_traffic_class, ISCSI_PARAM_IPV6_TC); | |
3779 | iscsi_conn_attr(ipv6_flow_label, ISCSI_PARAM_IPV6_FLOW_LABEL); | |
3780 | iscsi_conn_attr(is_fw_assigned_ipv6, ISCSI_PARAM_IS_FW_ASSIGNED_IPV6); | |
3781 | iscsi_conn_attr(tcp_xmit_wsf, ISCSI_PARAM_TCP_XMIT_WSF); | |
3782 | iscsi_conn_attr(tcp_recv_wsf, ISCSI_PARAM_TCP_RECV_WSF); | |
5af62f24 | 3783 | iscsi_conn_attr(local_ipaddr, ISCSI_PARAM_LOCAL_IPADDR); |
ae542edb | 3784 | |
1da177e4 | 3785 | |
289324b0 MC |
3786 | #define iscsi_conn_ep_attr_show(param) \ |
3787 | static ssize_t show_conn_ep_param_##param(struct device *dev, \ | |
3788 | struct device_attribute *attr,\ | |
3789 | char *buf) \ | |
3790 | { \ | |
3791 | struct iscsi_cls_conn *conn = iscsi_dev_to_conn(dev->parent); \ | |
3792 | struct iscsi_transport *t = conn->transport; \ | |
3793 | struct iscsi_endpoint *ep; \ | |
3794 | ssize_t rc; \ | |
3795 | \ | |
3796 | /* \ | |
3797 | * Need to make sure ep_disconnect does not free the LLD's \ | |
3798 | * interconnect resources while we are trying to read them. \ | |
3799 | */ \ | |
3800 | mutex_lock(&conn->ep_mutex); \ | |
3801 | ep = conn->ep; \ | |
3802 | if (!ep && t->ep_connect) { \ | |
3803 | mutex_unlock(&conn->ep_mutex); \ | |
3804 | return -ENOTCONN; \ | |
3805 | } \ | |
3806 | \ | |
3807 | if (ep) \ | |
3808 | rc = t->get_ep_param(ep, param, buf); \ | |
3809 | else \ | |
3810 | rc = t->get_conn_param(conn, param, buf); \ | |
3811 | mutex_unlock(&conn->ep_mutex); \ | |
3812 | return rc; \ | |
3813 | } | |
3814 | ||
3815 | #define iscsi_conn_ep_attr(field, param) \ | |
3816 | iscsi_conn_ep_attr_show(param) \ | |
3817 | static ISCSI_CLASS_ATTR(conn, field, S_IRUGO, \ | |
3818 | show_conn_ep_param_##param, NULL); | |
3819 | ||
3820 | iscsi_conn_ep_attr(address, ISCSI_PARAM_CONN_ADDRESS); | |
3821 | iscsi_conn_ep_attr(port, ISCSI_PARAM_CONN_PORT); | |
3822 | ||
3128c6c7 MC |
3823 | static struct attribute *iscsi_conn_attrs[] = { |
3824 | &dev_attr_conn_max_recv_dlength.attr, | |
3825 | &dev_attr_conn_max_xmit_dlength.attr, | |
3826 | &dev_attr_conn_header_digest.attr, | |
3827 | &dev_attr_conn_data_digest.attr, | |
3828 | &dev_attr_conn_ifmarker.attr, | |
3829 | &dev_attr_conn_ofmarker.attr, | |
3830 | &dev_attr_conn_address.attr, | |
3831 | &dev_attr_conn_port.attr, | |
3832 | &dev_attr_conn_exp_statsn.attr, | |
3833 | &dev_attr_conn_persistent_address.attr, | |
3834 | &dev_attr_conn_persistent_port.attr, | |
3835 | &dev_attr_conn_ping_tmo.attr, | |
3836 | &dev_attr_conn_recv_tmo.attr, | |
ae542edb AC |
3837 | &dev_attr_conn_local_port.attr, |
3838 | &dev_attr_conn_statsn.attr, | |
3839 | &dev_attr_conn_keepalive_tmo.attr, | |
3840 | &dev_attr_conn_max_segment_size.attr, | |
3841 | &dev_attr_conn_tcp_timestamp_stat.attr, | |
3842 | &dev_attr_conn_tcp_wsf_disable.attr, | |
3843 | &dev_attr_conn_tcp_nagle_disable.attr, | |
3844 | &dev_attr_conn_tcp_timer_scale.attr, | |
3845 | &dev_attr_conn_tcp_timestamp_enable.attr, | |
3846 | &dev_attr_conn_fragment_disable.attr, | |
3847 | &dev_attr_conn_ipv4_tos.attr, | |
3848 | &dev_attr_conn_ipv6_traffic_class.attr, | |
3849 | &dev_attr_conn_ipv6_flow_label.attr, | |
3850 | &dev_attr_conn_is_fw_assigned_ipv6.attr, | |
3851 | &dev_attr_conn_tcp_xmit_wsf.attr, | |
3852 | &dev_attr_conn_tcp_recv_wsf.attr, | |
5af62f24 | 3853 | &dev_attr_conn_local_ipaddr.attr, |
3128c6c7 MC |
3854 | NULL, |
3855 | }; | |
3856 | ||
587a1f16 | 3857 | static umode_t iscsi_conn_attr_is_visible(struct kobject *kobj, |
3128c6c7 MC |
3858 | struct attribute *attr, int i) |
3859 | { | |
3860 | struct device *cdev = container_of(kobj, struct device, kobj); | |
3861 | struct iscsi_cls_conn *conn = transport_class_to_conn(cdev); | |
3862 | struct iscsi_transport *t = conn->transport; | |
3863 | int param; | |
3864 | ||
3865 | if (attr == &dev_attr_conn_max_recv_dlength.attr) | |
3866 | param = ISCSI_PARAM_MAX_RECV_DLENGTH; | |
3867 | else if (attr == &dev_attr_conn_max_xmit_dlength.attr) | |
3868 | param = ISCSI_PARAM_MAX_XMIT_DLENGTH; | |
3869 | else if (attr == &dev_attr_conn_header_digest.attr) | |
3870 | param = ISCSI_PARAM_HDRDGST_EN; | |
3871 | else if (attr == &dev_attr_conn_data_digest.attr) | |
3872 | param = ISCSI_PARAM_DATADGST_EN; | |
3873 | else if (attr == &dev_attr_conn_ifmarker.attr) | |
3874 | param = ISCSI_PARAM_IFMARKER_EN; | |
3875 | else if (attr == &dev_attr_conn_ofmarker.attr) | |
3876 | param = ISCSI_PARAM_OFMARKER_EN; | |
3877 | else if (attr == &dev_attr_conn_address.attr) | |
3878 | param = ISCSI_PARAM_CONN_ADDRESS; | |
3879 | else if (attr == &dev_attr_conn_port.attr) | |
3880 | param = ISCSI_PARAM_CONN_PORT; | |
3881 | else if (attr == &dev_attr_conn_exp_statsn.attr) | |
3882 | param = ISCSI_PARAM_EXP_STATSN; | |
3883 | else if (attr == &dev_attr_conn_persistent_address.attr) | |
3884 | param = ISCSI_PARAM_PERSISTENT_ADDRESS; | |
3885 | else if (attr == &dev_attr_conn_persistent_port.attr) | |
3886 | param = ISCSI_PARAM_PERSISTENT_PORT; | |
3887 | else if (attr == &dev_attr_conn_ping_tmo.attr) | |
3888 | param = ISCSI_PARAM_PING_TMO; | |
3889 | else if (attr == &dev_attr_conn_recv_tmo.attr) | |
3890 | param = ISCSI_PARAM_RECV_TMO; | |
ae542edb AC |
3891 | else if (attr == &dev_attr_conn_local_port.attr) |
3892 | param = ISCSI_PARAM_LOCAL_PORT; | |
3893 | else if (attr == &dev_attr_conn_statsn.attr) | |
3894 | param = ISCSI_PARAM_STATSN; | |
3895 | else if (attr == &dev_attr_conn_keepalive_tmo.attr) | |
3896 | param = ISCSI_PARAM_KEEPALIVE_TMO; | |
3897 | else if (attr == &dev_attr_conn_max_segment_size.attr) | |
3898 | param = ISCSI_PARAM_MAX_SEGMENT_SIZE; | |
3899 | else if (attr == &dev_attr_conn_tcp_timestamp_stat.attr) | |
3900 | param = ISCSI_PARAM_TCP_TIMESTAMP_STAT; | |
3901 | else if (attr == &dev_attr_conn_tcp_wsf_disable.attr) | |
3902 | param = ISCSI_PARAM_TCP_WSF_DISABLE; | |
3903 | else if (attr == &dev_attr_conn_tcp_nagle_disable.attr) | |
3904 | param = ISCSI_PARAM_TCP_NAGLE_DISABLE; | |
3905 | else if (attr == &dev_attr_conn_tcp_timer_scale.attr) | |
3906 | param = ISCSI_PARAM_TCP_TIMER_SCALE; | |
3907 | else if (attr == &dev_attr_conn_tcp_timestamp_enable.attr) | |
3908 | param = ISCSI_PARAM_TCP_TIMESTAMP_EN; | |
3909 | else if (attr == &dev_attr_conn_fragment_disable.attr) | |
3910 | param = ISCSI_PARAM_IP_FRAGMENT_DISABLE; | |
3911 | else if (attr == &dev_attr_conn_ipv4_tos.attr) | |
3912 | param = ISCSI_PARAM_IPV4_TOS; | |
3913 | else if (attr == &dev_attr_conn_ipv6_traffic_class.attr) | |
3914 | param = ISCSI_PARAM_IPV6_TC; | |
3915 | else if (attr == &dev_attr_conn_ipv6_flow_label.attr) | |
3916 | param = ISCSI_PARAM_IPV6_FLOW_LABEL; | |
3917 | else if (attr == &dev_attr_conn_is_fw_assigned_ipv6.attr) | |
3918 | param = ISCSI_PARAM_IS_FW_ASSIGNED_IPV6; | |
3919 | else if (attr == &dev_attr_conn_tcp_xmit_wsf.attr) | |
3920 | param = ISCSI_PARAM_TCP_XMIT_WSF; | |
3921 | else if (attr == &dev_attr_conn_tcp_recv_wsf.attr) | |
3922 | param = ISCSI_PARAM_TCP_RECV_WSF; | |
5af62f24 AC |
3923 | else if (attr == &dev_attr_conn_local_ipaddr.attr) |
3924 | param = ISCSI_PARAM_LOCAL_IPADDR; | |
3128c6c7 MC |
3925 | else { |
3926 | WARN_ONCE(1, "Invalid conn attr"); | |
3927 | return 0; | |
3928 | } | |
3929 | ||
3930 | return t->attr_is_visible(ISCSI_PARAM, param); | |
3931 | } | |
3932 | ||
3933 | static struct attribute_group iscsi_conn_group = { | |
3934 | .attrs = iscsi_conn_attrs, | |
3935 | .is_visible = iscsi_conn_attr_is_visible, | |
3936 | }; | |
3937 | ||
1da177e4 | 3938 | /* |
0896b752 | 3939 | * iSCSI session attrs |
1da177e4 | 3940 | */ |
b2c64167 | 3941 | #define iscsi_session_attr_show(param, perm) \ |
fd7255f5 | 3942 | static ssize_t \ |
ee959b00 TJ |
3943 | show_session_param_##param(struct device *dev, \ |
3944 | struct device_attribute *attr, char *buf) \ | |
fd7255f5 | 3945 | { \ |
ee959b00 TJ |
3946 | struct iscsi_cls_session *session = \ |
3947 | iscsi_dev_to_session(dev->parent); \ | |
fd7255f5 | 3948 | struct iscsi_transport *t = session->transport; \ |
b2c64167 MC |
3949 | \ |
3950 | if (perm && !capable(CAP_SYS_ADMIN)) \ | |
3951 | return -EACCES; \ | |
a54a52ca | 3952 | return t->get_session_param(session, param, buf); \ |
fd7255f5 MC |
3953 | } |
3954 | ||
b2c64167 MC |
3955 | #define iscsi_session_attr(field, param, perm) \ |
3956 | iscsi_session_attr_show(param, perm) \ | |
a54a52ca | 3957 | static ISCSI_CLASS_ATTR(sess, field, S_IRUGO, show_session_param_##param, \ |
fd7255f5 | 3958 | NULL); |
b2c64167 MC |
3959 | iscsi_session_attr(targetname, ISCSI_PARAM_TARGET_NAME, 0); |
3960 | iscsi_session_attr(initial_r2t, ISCSI_PARAM_INITIAL_R2T_EN, 0); | |
3961 | iscsi_session_attr(max_outstanding_r2t, ISCSI_PARAM_MAX_R2T, 0); | |
3962 | iscsi_session_attr(immediate_data, ISCSI_PARAM_IMM_DATA_EN, 0); | |
3963 | iscsi_session_attr(first_burst_len, ISCSI_PARAM_FIRST_BURST, 0); | |
3964 | iscsi_session_attr(max_burst_len, ISCSI_PARAM_MAX_BURST, 0); | |
3965 | iscsi_session_attr(data_pdu_in_order, ISCSI_PARAM_PDU_INORDER_EN, 0); | |
3966 | iscsi_session_attr(data_seq_in_order, ISCSI_PARAM_DATASEQ_INORDER_EN, 0); | |
3967 | iscsi_session_attr(erl, ISCSI_PARAM_ERL, 0); | |
3968 | iscsi_session_attr(tpgt, ISCSI_PARAM_TPGT, 0); | |
3969 | iscsi_session_attr(username, ISCSI_PARAM_USERNAME, 1); | |
3970 | iscsi_session_attr(username_in, ISCSI_PARAM_USERNAME_IN, 1); | |
3971 | iscsi_session_attr(password, ISCSI_PARAM_PASSWORD, 1); | |
3972 | iscsi_session_attr(password_in, ISCSI_PARAM_PASSWORD_IN, 1); | |
30534952 MC |
3973 | iscsi_session_attr(chap_out_idx, ISCSI_PARAM_CHAP_OUT_IDX, 1); |
3974 | iscsi_session_attr(chap_in_idx, ISCSI_PARAM_CHAP_IN_IDX, 1); | |
4cd49ea1 MC |
3975 | iscsi_session_attr(fast_abort, ISCSI_PARAM_FAST_ABORT, 0); |
3976 | iscsi_session_attr(abort_tmo, ISCSI_PARAM_ABORT_TMO, 0); | |
3977 | iscsi_session_attr(lu_reset_tmo, ISCSI_PARAM_LU_RESET_TMO, 0); | |
3fe5ae8b | 3978 | iscsi_session_attr(tgt_reset_tmo, ISCSI_PARAM_TGT_RESET_TMO, 0); |
88dfd340 | 3979 | iscsi_session_attr(ifacename, ISCSI_PARAM_IFACE_NAME, 0); |
3b2bef1f VC |
3980 | iscsi_session_attr(initiatorname, ISCSI_PARAM_INITIATOR_NAME, 0); |
3981 | iscsi_session_attr(targetalias, ISCSI_PARAM_TARGET_ALIAS, 0); | |
3b9373e9 EW |
3982 | iscsi_session_attr(boot_root, ISCSI_PARAM_BOOT_ROOT, 0); |
3983 | iscsi_session_attr(boot_nic, ISCSI_PARAM_BOOT_NIC, 0); | |
3984 | iscsi_session_attr(boot_target, ISCSI_PARAM_BOOT_TARGET, 0); | |
ae542edb AC |
3985 | iscsi_session_attr(auto_snd_tgt_disable, ISCSI_PARAM_AUTO_SND_TGT_DISABLE, 0); |
3986 | iscsi_session_attr(discovery_session, ISCSI_PARAM_DISCOVERY_SESS, 0); | |
3987 | iscsi_session_attr(portal_type, ISCSI_PARAM_PORTAL_TYPE, 0); | |
3988 | iscsi_session_attr(chap_auth, ISCSI_PARAM_CHAP_AUTH_EN, 0); | |
3989 | iscsi_session_attr(discovery_logout, ISCSI_PARAM_DISCOVERY_LOGOUT_EN, 0); | |
3990 | iscsi_session_attr(bidi_chap, ISCSI_PARAM_BIDI_CHAP_EN, 0); | |
3991 | iscsi_session_attr(discovery_auth_optional, | |
3992 | ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL, 0); | |
3993 | iscsi_session_attr(def_time2wait, ISCSI_PARAM_DEF_TIME2WAIT, 0); | |
3994 | iscsi_session_attr(def_time2retain, ISCSI_PARAM_DEF_TIME2RETAIN, 0); | |
3995 | iscsi_session_attr(isid, ISCSI_PARAM_ISID, 0); | |
3996 | iscsi_session_attr(tsid, ISCSI_PARAM_TSID, 0); | |
3997 | iscsi_session_attr(def_taskmgmt_tmo, ISCSI_PARAM_DEF_TASKMGMT_TMO, 0); | |
3998 | iscsi_session_attr(discovery_parent_idx, ISCSI_PARAM_DISCOVERY_PARENT_IDX, 0); | |
3999 | iscsi_session_attr(discovery_parent_type, ISCSI_PARAM_DISCOVERY_PARENT_TYPE, 0); | |
1da177e4 | 4000 | |
6eabafbe | 4001 | static ssize_t |
ee959b00 TJ |
4002 | show_priv_session_state(struct device *dev, struct device_attribute *attr, |
4003 | char *buf) | |
6eabafbe | 4004 | { |
ee959b00 | 4005 | struct iscsi_cls_session *session = iscsi_dev_to_session(dev->parent); |
6eabafbe MC |
4006 | return sprintf(buf, "%s\n", iscsi_session_state_name(session->state)); |
4007 | } | |
4008 | static ISCSI_CLASS_ATTR(priv_sess, state, S_IRUGO, show_priv_session_state, | |
4009 | NULL); | |
0c70d84b MC |
4010 | static ssize_t |
4011 | show_priv_session_creator(struct device *dev, struct device_attribute *attr, | |
4012 | char *buf) | |
4013 | { | |
4014 | struct iscsi_cls_session *session = iscsi_dev_to_session(dev->parent); | |
4015 | return sprintf(buf, "%d\n", session->creator); | |
4016 | } | |
4017 | static ISCSI_CLASS_ATTR(priv_sess, creator, S_IRUGO, show_priv_session_creator, | |
4018 | NULL); | |
930a9f04 MR |
4019 | static ssize_t |
4020 | show_priv_session_target_id(struct device *dev, struct device_attribute *attr, | |
4021 | char *buf) | |
4022 | { | |
4023 | struct iscsi_cls_session *session = iscsi_dev_to_session(dev->parent); | |
4024 | return sprintf(buf, "%d\n", session->target_id); | |
4025 | } | |
4026 | static ISCSI_CLASS_ATTR(priv_sess, target_id, S_IRUGO, | |
4027 | show_priv_session_target_id, NULL); | |
6eabafbe | 4028 | |
fd7255f5 MC |
4029 | #define iscsi_priv_session_attr_show(field, format) \ |
4030 | static ssize_t \ | |
ee959b00 TJ |
4031 | show_priv_session_##field(struct device *dev, \ |
4032 | struct device_attribute *attr, char *buf) \ | |
fd7255f5 | 4033 | { \ |
ee959b00 TJ |
4034 | struct iscsi_cls_session *session = \ |
4035 | iscsi_dev_to_session(dev->parent); \ | |
fe4f0bde VC |
4036 | if (session->field == -1) \ |
4037 | return sprintf(buf, "off\n"); \ | |
fd7255f5 MC |
4038 | return sprintf(buf, format"\n", session->field); \ |
4039 | } | |
4040 | ||
fe4f0bde VC |
4041 | #define iscsi_priv_session_attr_store(field) \ |
4042 | static ssize_t \ | |
4043 | store_priv_session_##field(struct device *dev, \ | |
4044 | struct device_attribute *attr, \ | |
4045 | const char *buf, size_t count) \ | |
4046 | { \ | |
4047 | int val; \ | |
4048 | char *cp; \ | |
4049 | struct iscsi_cls_session *session = \ | |
4050 | iscsi_dev_to_session(dev->parent); \ | |
4051 | if ((session->state == ISCSI_SESSION_FREE) || \ | |
4052 | (session->state == ISCSI_SESSION_FAILED)) \ | |
4053 | return -EBUSY; \ | |
9c8108a4 | 4054 | if (strncmp(buf, "off", 3) == 0) { \ |
fe4f0bde | 4055 | session->field = -1; \ |
9c8108a4 CL |
4056 | session->field##_sysfs_override = true; \ |
4057 | } else { \ | |
fe4f0bde VC |
4058 | val = simple_strtoul(buf, &cp, 0); \ |
4059 | if (*cp != '\0' && *cp != '\n') \ | |
4060 | return -EINVAL; \ | |
4061 | session->field = val; \ | |
9c8108a4 | 4062 | session->field##_sysfs_override = true; \ |
fe4f0bde VC |
4063 | } \ |
4064 | return count; \ | |
4065 | } | |
4066 | ||
4067 | #define iscsi_priv_session_rw_attr(field, format) \ | |
fd7255f5 | 4068 | iscsi_priv_session_attr_show(field, format) \ |
fe4f0bde | 4069 | iscsi_priv_session_attr_store(field) \ |
523f3c80 | 4070 | static ISCSI_CLASS_ATTR(priv_sess, field, S_IRUGO | S_IWUSR, \ |
fe4f0bde VC |
4071 | show_priv_session_##field, \ |
4072 | store_priv_session_##field) | |
9c8108a4 | 4073 | |
fe4f0bde | 4074 | iscsi_priv_session_rw_attr(recovery_tmo, "%d"); |
fd7255f5 | 4075 | |
1d063c17 MC |
4076 | static struct attribute *iscsi_session_attrs[] = { |
4077 | &dev_attr_sess_initial_r2t.attr, | |
4078 | &dev_attr_sess_max_outstanding_r2t.attr, | |
4079 | &dev_attr_sess_immediate_data.attr, | |
4080 | &dev_attr_sess_first_burst_len.attr, | |
4081 | &dev_attr_sess_max_burst_len.attr, | |
4082 | &dev_attr_sess_data_pdu_in_order.attr, | |
4083 | &dev_attr_sess_data_seq_in_order.attr, | |
4084 | &dev_attr_sess_erl.attr, | |
4085 | &dev_attr_sess_targetname.attr, | |
4086 | &dev_attr_sess_tpgt.attr, | |
4087 | &dev_attr_sess_password.attr, | |
4088 | &dev_attr_sess_password_in.attr, | |
4089 | &dev_attr_sess_username.attr, | |
4090 | &dev_attr_sess_username_in.attr, | |
4091 | &dev_attr_sess_fast_abort.attr, | |
4092 | &dev_attr_sess_abort_tmo.attr, | |
4093 | &dev_attr_sess_lu_reset_tmo.attr, | |
4094 | &dev_attr_sess_tgt_reset_tmo.attr, | |
4095 | &dev_attr_sess_ifacename.attr, | |
4096 | &dev_attr_sess_initiatorname.attr, | |
4097 | &dev_attr_sess_targetalias.attr, | |
3b9373e9 EW |
4098 | &dev_attr_sess_boot_root.attr, |
4099 | &dev_attr_sess_boot_nic.attr, | |
4100 | &dev_attr_sess_boot_target.attr, | |
1d063c17 MC |
4101 | &dev_attr_priv_sess_recovery_tmo.attr, |
4102 | &dev_attr_priv_sess_state.attr, | |
0c70d84b | 4103 | &dev_attr_priv_sess_creator.attr, |
30534952 MC |
4104 | &dev_attr_sess_chap_out_idx.attr, |
4105 | &dev_attr_sess_chap_in_idx.attr, | |
930a9f04 | 4106 | &dev_attr_priv_sess_target_id.attr, |
ae542edb AC |
4107 | &dev_attr_sess_auto_snd_tgt_disable.attr, |
4108 | &dev_attr_sess_discovery_session.attr, | |
4109 | &dev_attr_sess_portal_type.attr, | |
4110 | &dev_attr_sess_chap_auth.attr, | |
4111 | &dev_attr_sess_discovery_logout.attr, | |
4112 | &dev_attr_sess_bidi_chap.attr, | |
4113 | &dev_attr_sess_discovery_auth_optional.attr, | |
4114 | &dev_attr_sess_def_time2wait.attr, | |
4115 | &dev_attr_sess_def_time2retain.attr, | |
4116 | &dev_attr_sess_isid.attr, | |
4117 | &dev_attr_sess_tsid.attr, | |
4118 | &dev_attr_sess_def_taskmgmt_tmo.attr, | |
4119 | &dev_attr_sess_discovery_parent_idx.attr, | |
4120 | &dev_attr_sess_discovery_parent_type.attr, | |
1d063c17 MC |
4121 | NULL, |
4122 | }; | |
4123 | ||
587a1f16 | 4124 | static umode_t iscsi_session_attr_is_visible(struct kobject *kobj, |
1d063c17 MC |
4125 | struct attribute *attr, int i) |
4126 | { | |
4127 | struct device *cdev = container_of(kobj, struct device, kobj); | |
4128 | struct iscsi_cls_session *session = transport_class_to_session(cdev); | |
4129 | struct iscsi_transport *t = session->transport; | |
4130 | int param; | |
4131 | ||
4132 | if (attr == &dev_attr_sess_initial_r2t.attr) | |
4133 | param = ISCSI_PARAM_INITIAL_R2T_EN; | |
4134 | else if (attr == &dev_attr_sess_max_outstanding_r2t.attr) | |
4135 | param = ISCSI_PARAM_MAX_R2T; | |
4136 | else if (attr == &dev_attr_sess_immediate_data.attr) | |
4137 | param = ISCSI_PARAM_IMM_DATA_EN; | |
4138 | else if (attr == &dev_attr_sess_first_burst_len.attr) | |
4139 | param = ISCSI_PARAM_FIRST_BURST; | |
4140 | else if (attr == &dev_attr_sess_max_burst_len.attr) | |
4141 | param = ISCSI_PARAM_MAX_BURST; | |
4142 | else if (attr == &dev_attr_sess_data_pdu_in_order.attr) | |
4143 | param = ISCSI_PARAM_PDU_INORDER_EN; | |
4144 | else if (attr == &dev_attr_sess_data_seq_in_order.attr) | |
4145 | param = ISCSI_PARAM_DATASEQ_INORDER_EN; | |
4146 | else if (attr == &dev_attr_sess_erl.attr) | |
4147 | param = ISCSI_PARAM_ERL; | |
4148 | else if (attr == &dev_attr_sess_targetname.attr) | |
4149 | param = ISCSI_PARAM_TARGET_NAME; | |
4150 | else if (attr == &dev_attr_sess_tpgt.attr) | |
4151 | param = ISCSI_PARAM_TPGT; | |
30534952 MC |
4152 | else if (attr == &dev_attr_sess_chap_in_idx.attr) |
4153 | param = ISCSI_PARAM_CHAP_IN_IDX; | |
4154 | else if (attr == &dev_attr_sess_chap_out_idx.attr) | |
4155 | param = ISCSI_PARAM_CHAP_OUT_IDX; | |
1d063c17 MC |
4156 | else if (attr == &dev_attr_sess_password.attr) |
4157 | param = ISCSI_PARAM_USERNAME; | |
4158 | else if (attr == &dev_attr_sess_password_in.attr) | |
4159 | param = ISCSI_PARAM_USERNAME_IN; | |
4160 | else if (attr == &dev_attr_sess_username.attr) | |
4161 | param = ISCSI_PARAM_PASSWORD; | |
4162 | else if (attr == &dev_attr_sess_username_in.attr) | |
4163 | param = ISCSI_PARAM_PASSWORD_IN; | |
4164 | else if (attr == &dev_attr_sess_fast_abort.attr) | |
4165 | param = ISCSI_PARAM_FAST_ABORT; | |
4166 | else if (attr == &dev_attr_sess_abort_tmo.attr) | |
4167 | param = ISCSI_PARAM_ABORT_TMO; | |
4168 | else if (attr == &dev_attr_sess_lu_reset_tmo.attr) | |
4169 | param = ISCSI_PARAM_LU_RESET_TMO; | |
4170 | else if (attr == &dev_attr_sess_tgt_reset_tmo.attr) | |
4171 | param = ISCSI_PARAM_TGT_RESET_TMO; | |
4172 | else if (attr == &dev_attr_sess_ifacename.attr) | |
4173 | param = ISCSI_PARAM_IFACE_NAME; | |
4174 | else if (attr == &dev_attr_sess_initiatorname.attr) | |
4175 | param = ISCSI_PARAM_INITIATOR_NAME; | |
4176 | else if (attr == &dev_attr_sess_targetalias.attr) | |
4177 | param = ISCSI_PARAM_TARGET_ALIAS; | |
3b9373e9 EW |
4178 | else if (attr == &dev_attr_sess_boot_root.attr) |
4179 | param = ISCSI_PARAM_BOOT_ROOT; | |
4180 | else if (attr == &dev_attr_sess_boot_nic.attr) | |
4181 | param = ISCSI_PARAM_BOOT_NIC; | |
4182 | else if (attr == &dev_attr_sess_boot_target.attr) | |
4183 | param = ISCSI_PARAM_BOOT_TARGET; | |
ae542edb AC |
4184 | else if (attr == &dev_attr_sess_auto_snd_tgt_disable.attr) |
4185 | param = ISCSI_PARAM_AUTO_SND_TGT_DISABLE; | |
4186 | else if (attr == &dev_attr_sess_discovery_session.attr) | |
4187 | param = ISCSI_PARAM_DISCOVERY_SESS; | |
4188 | else if (attr == &dev_attr_sess_portal_type.attr) | |
4189 | param = ISCSI_PARAM_PORTAL_TYPE; | |
4190 | else if (attr == &dev_attr_sess_chap_auth.attr) | |
4191 | param = ISCSI_PARAM_CHAP_AUTH_EN; | |
4192 | else if (attr == &dev_attr_sess_discovery_logout.attr) | |
4193 | param = ISCSI_PARAM_DISCOVERY_LOGOUT_EN; | |
4194 | else if (attr == &dev_attr_sess_bidi_chap.attr) | |
4195 | param = ISCSI_PARAM_BIDI_CHAP_EN; | |
4196 | else if (attr == &dev_attr_sess_discovery_auth_optional.attr) | |
4197 | param = ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL; | |
4198 | else if (attr == &dev_attr_sess_def_time2wait.attr) | |
4199 | param = ISCSI_PARAM_DEF_TIME2WAIT; | |
4200 | else if (attr == &dev_attr_sess_def_time2retain.attr) | |
4201 | param = ISCSI_PARAM_DEF_TIME2RETAIN; | |
4202 | else if (attr == &dev_attr_sess_isid.attr) | |
4203 | param = ISCSI_PARAM_ISID; | |
4204 | else if (attr == &dev_attr_sess_tsid.attr) | |
4205 | param = ISCSI_PARAM_TSID; | |
4206 | else if (attr == &dev_attr_sess_def_taskmgmt_tmo.attr) | |
4207 | param = ISCSI_PARAM_DEF_TASKMGMT_TMO; | |
4208 | else if (attr == &dev_attr_sess_discovery_parent_idx.attr) | |
4209 | param = ISCSI_PARAM_DISCOVERY_PARENT_IDX; | |
4210 | else if (attr == &dev_attr_sess_discovery_parent_type.attr) | |
4211 | param = ISCSI_PARAM_DISCOVERY_PARENT_TYPE; | |
1d063c17 MC |
4212 | else if (attr == &dev_attr_priv_sess_recovery_tmo.attr) |
4213 | return S_IRUGO | S_IWUSR; | |
4214 | else if (attr == &dev_attr_priv_sess_state.attr) | |
4215 | return S_IRUGO; | |
0c70d84b MC |
4216 | else if (attr == &dev_attr_priv_sess_creator.attr) |
4217 | return S_IRUGO; | |
930a9f04 MR |
4218 | else if (attr == &dev_attr_priv_sess_target_id.attr) |
4219 | return S_IRUGO; | |
1d063c17 MC |
4220 | else { |
4221 | WARN_ONCE(1, "Invalid session attr"); | |
4222 | return 0; | |
4223 | } | |
4224 | ||
4225 | return t->attr_is_visible(ISCSI_PARAM, param); | |
4226 | } | |
4227 | ||
4228 | static struct attribute_group iscsi_session_group = { | |
4229 | .attrs = iscsi_session_attrs, | |
4230 | .is_visible = iscsi_session_attr_is_visible, | |
4231 | }; | |
4232 | ||
1819dc81 MC |
4233 | /* |
4234 | * iSCSI host attrs | |
4235 | */ | |
4236 | #define iscsi_host_attr_show(param) \ | |
4237 | static ssize_t \ | |
ee959b00 TJ |
4238 | show_host_param_##param(struct device *dev, \ |
4239 | struct device_attribute *attr, char *buf) \ | |
1819dc81 | 4240 | { \ |
ee959b00 | 4241 | struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1819dc81 MC |
4242 | struct iscsi_internal *priv = to_iscsi_internal(shost->transportt); \ |
4243 | return priv->iscsi_transport->get_host_param(shost, param, buf); \ | |
4244 | } | |
4245 | ||
4246 | #define iscsi_host_attr(field, param) \ | |
4247 | iscsi_host_attr_show(param) \ | |
4248 | static ISCSI_CLASS_ATTR(host, field, S_IRUGO, show_host_param_##param, \ | |
4249 | NULL); | |
4250 | ||
d8196ed2 | 4251 | iscsi_host_attr(netdev, ISCSI_HOST_PARAM_NETDEV_NAME); |
1819dc81 | 4252 | iscsi_host_attr(hwaddress, ISCSI_HOST_PARAM_HWADDRESS); |
d8196ed2 | 4253 | iscsi_host_attr(ipaddress, ISCSI_HOST_PARAM_IPADDRESS); |
8ad5781a | 4254 | iscsi_host_attr(initiatorname, ISCSI_HOST_PARAM_INITIATOR_NAME); |
aeddde29 VC |
4255 | iscsi_host_attr(port_state, ISCSI_HOST_PARAM_PORT_STATE); |
4256 | iscsi_host_attr(port_speed, ISCSI_HOST_PARAM_PORT_SPEED); | |
1819dc81 | 4257 | |
f27fb2ef MC |
4258 | static struct attribute *iscsi_host_attrs[] = { |
4259 | &dev_attr_host_netdev.attr, | |
4260 | &dev_attr_host_hwaddress.attr, | |
4261 | &dev_attr_host_ipaddress.attr, | |
4262 | &dev_attr_host_initiatorname.attr, | |
aeddde29 VC |
4263 | &dev_attr_host_port_state.attr, |
4264 | &dev_attr_host_port_speed.attr, | |
f27fb2ef MC |
4265 | NULL, |
4266 | }; | |
4267 | ||
587a1f16 | 4268 | static umode_t iscsi_host_attr_is_visible(struct kobject *kobj, |
f27fb2ef MC |
4269 | struct attribute *attr, int i) |
4270 | { | |
4271 | struct device *cdev = container_of(kobj, struct device, kobj); | |
4272 | struct Scsi_Host *shost = transport_class_to_shost(cdev); | |
4273 | struct iscsi_internal *priv = to_iscsi_internal(shost->transportt); | |
4274 | int param; | |
4275 | ||
4276 | if (attr == &dev_attr_host_netdev.attr) | |
4277 | param = ISCSI_HOST_PARAM_NETDEV_NAME; | |
4278 | else if (attr == &dev_attr_host_hwaddress.attr) | |
4279 | param = ISCSI_HOST_PARAM_HWADDRESS; | |
4280 | else if (attr == &dev_attr_host_ipaddress.attr) | |
4281 | param = ISCSI_HOST_PARAM_IPADDRESS; | |
4282 | else if (attr == &dev_attr_host_initiatorname.attr) | |
4283 | param = ISCSI_HOST_PARAM_INITIATOR_NAME; | |
aeddde29 VC |
4284 | else if (attr == &dev_attr_host_port_state.attr) |
4285 | param = ISCSI_HOST_PARAM_PORT_STATE; | |
4286 | else if (attr == &dev_attr_host_port_speed.attr) | |
4287 | param = ISCSI_HOST_PARAM_PORT_SPEED; | |
f27fb2ef MC |
4288 | else { |
4289 | WARN_ONCE(1, "Invalid host attr"); | |
4290 | return 0; | |
4291 | } | |
4292 | ||
4293 | return priv->iscsi_transport->attr_is_visible(ISCSI_HOST_PARAM, param); | |
4294 | } | |
4295 | ||
4296 | static struct attribute_group iscsi_host_group = { | |
4297 | .attrs = iscsi_host_attrs, | |
4298 | .is_visible = iscsi_host_attr_is_visible, | |
4299 | }; | |
1819dc81 | 4300 | |
aeddde29 VC |
4301 | /* convert iscsi_port_speed values to ascii string name */ |
4302 | static const struct { | |
4303 | enum iscsi_port_speed value; | |
4304 | char *name; | |
4305 | } iscsi_port_speed_names[] = { | |
4306 | {ISCSI_PORT_SPEED_UNKNOWN, "Unknown" }, | |
4307 | {ISCSI_PORT_SPEED_10MBPS, "10 Mbps" }, | |
4308 | {ISCSI_PORT_SPEED_100MBPS, "100 Mbps" }, | |
4309 | {ISCSI_PORT_SPEED_1GBPS, "1 Gbps" }, | |
4310 | {ISCSI_PORT_SPEED_10GBPS, "10 Gbps" }, | |
4311 | }; | |
4312 | ||
4313 | char *iscsi_get_port_speed_name(struct Scsi_Host *shost) | |
4314 | { | |
4315 | int i; | |
4316 | char *speed = "Unknown!"; | |
4317 | struct iscsi_cls_host *ihost = shost->shost_data; | |
4318 | uint32_t port_speed = ihost->port_speed; | |
4319 | ||
4320 | for (i = 0; i < ARRAY_SIZE(iscsi_port_speed_names); i++) { | |
4321 | if (iscsi_port_speed_names[i].value & port_speed) { | |
4322 | speed = iscsi_port_speed_names[i].name; | |
4323 | break; | |
4324 | } | |
4325 | } | |
4326 | return speed; | |
4327 | } | |
4328 | EXPORT_SYMBOL_GPL(iscsi_get_port_speed_name); | |
4329 | ||
4330 | /* convert iscsi_port_state values to ascii string name */ | |
4331 | static const struct { | |
4332 | enum iscsi_port_state value; | |
4333 | char *name; | |
4334 | } iscsi_port_state_names[] = { | |
4335 | {ISCSI_PORT_STATE_DOWN, "LINK DOWN" }, | |
4336 | {ISCSI_PORT_STATE_UP, "LINK UP" }, | |
4337 | }; | |
4338 | ||
4339 | char *iscsi_get_port_state_name(struct Scsi_Host *shost) | |
4340 | { | |
4341 | int i; | |
4342 | char *state = "Unknown!"; | |
4343 | struct iscsi_cls_host *ihost = shost->shost_data; | |
4344 | uint32_t port_state = ihost->port_state; | |
4345 | ||
4346 | for (i = 0; i < ARRAY_SIZE(iscsi_port_state_names); i++) { | |
4347 | if (iscsi_port_state_names[i].value & port_state) { | |
4348 | state = iscsi_port_state_names[i].name; | |
4349 | break; | |
4350 | } | |
4351 | } | |
4352 | return state; | |
4353 | } | |
4354 | EXPORT_SYMBOL_GPL(iscsi_get_port_state_name); | |
4355 | ||
0896b752 AA |
4356 | static int iscsi_session_match(struct attribute_container *cont, |
4357 | struct device *dev) | |
1da177e4 | 4358 | { |
7b8631b5 | 4359 | struct iscsi_cls_session *session; |
1da177e4 | 4360 | struct Scsi_Host *shost; |
0896b752 AA |
4361 | struct iscsi_internal *priv; |
4362 | ||
4363 | if (!iscsi_is_session_dev(dev)) | |
4364 | return 0; | |
1da177e4 | 4365 | |
7b8631b5 MC |
4366 | session = iscsi_dev_to_session(dev); |
4367 | shost = iscsi_session_to_shost(session); | |
0896b752 | 4368 | if (!shost->transportt) |
1da177e4 LT |
4369 | return 0; |
4370 | ||
0896b752 AA |
4371 | priv = to_iscsi_internal(shost->transportt); |
4372 | if (priv->session_cont.ac.class != &iscsi_session_class.class) | |
1da177e4 LT |
4373 | return 0; |
4374 | ||
0896b752 | 4375 | return &priv->session_cont.ac == cont; |
1da177e4 LT |
4376 | } |
4377 | ||
0896b752 AA |
4378 | static int iscsi_conn_match(struct attribute_container *cont, |
4379 | struct device *dev) | |
4380 | { | |
7b8631b5 MC |
4381 | struct iscsi_cls_session *session; |
4382 | struct iscsi_cls_conn *conn; | |
1da177e4 | 4383 | struct Scsi_Host *shost; |
0896b752 | 4384 | struct iscsi_internal *priv; |
1da177e4 | 4385 | |
0896b752 | 4386 | if (!iscsi_is_conn_dev(dev)) |
1da177e4 LT |
4387 | return 0; |
4388 | ||
7b8631b5 MC |
4389 | conn = iscsi_dev_to_conn(dev); |
4390 | session = iscsi_dev_to_session(conn->dev.parent); | |
4391 | shost = iscsi_session_to_shost(session); | |
4392 | ||
0896b752 | 4393 | if (!shost->transportt) |
1da177e4 LT |
4394 | return 0; |
4395 | ||
0896b752 AA |
4396 | priv = to_iscsi_internal(shost->transportt); |
4397 | if (priv->conn_cont.ac.class != &iscsi_connection_class.class) | |
4398 | return 0; | |
1da177e4 | 4399 | |
0896b752 AA |
4400 | return &priv->conn_cont.ac == cont; |
4401 | } | |
4402 | ||
30a6c652 MC |
4403 | static int iscsi_host_match(struct attribute_container *cont, |
4404 | struct device *dev) | |
4405 | { | |
4406 | struct Scsi_Host *shost; | |
4407 | struct iscsi_internal *priv; | |
4408 | ||
4409 | if (!scsi_is_host_device(dev)) | |
4410 | return 0; | |
4411 | ||
4412 | shost = dev_to_shost(dev); | |
4413 | if (!shost->transportt || | |
4414 | shost->transportt->host_attrs.ac.class != &iscsi_host_class.class) | |
4415 | return 0; | |
4416 | ||
4417 | priv = to_iscsi_internal(shost->transportt); | |
4418 | return &priv->t.host_attrs.ac == cont; | |
4419 | } | |
4420 | ||
7b8631b5 MC |
4421 | struct scsi_transport_template * |
4422 | iscsi_register_transport(struct iscsi_transport *tt) | |
0896b752 AA |
4423 | { |
4424 | struct iscsi_internal *priv; | |
4425 | unsigned long flags; | |
f27fb2ef | 4426 | int err; |
0896b752 AA |
4427 | |
4428 | BUG_ON(!tt); | |
4429 | ||
4430 | priv = iscsi_if_transport_lookup(tt); | |
4431 | if (priv) | |
7b8631b5 | 4432 | return NULL; |
0896b752 | 4433 | |
24669f75 | 4434 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); |
0896b752 | 4435 | if (!priv) |
7b8631b5 | 4436 | return NULL; |
0896b752 | 4437 | INIT_LIST_HEAD(&priv->list); |
0896b752 | 4438 | priv->iscsi_transport = tt; |
30a6c652 | 4439 | priv->t.user_scan = iscsi_user_scan; |
06d25af4 | 4440 | priv->t.create_work_queue = 1; |
0896b752 | 4441 | |
ee959b00 | 4442 | priv->dev.class = &iscsi_transport_class; |
71610f55 | 4443 | dev_set_name(&priv->dev, "%s", tt->name); |
ee959b00 | 4444 | err = device_register(&priv->dev); |
0896b752 AA |
4445 | if (err) |
4446 | goto free_priv; | |
4447 | ||
ee959b00 | 4448 | err = sysfs_create_group(&priv->dev.kobj, &iscsi_transport_group); |
0896b752 | 4449 | if (err) |
ee959b00 | 4450 | goto unregister_dev; |
0896b752 | 4451 | |
30a6c652 | 4452 | /* host parameters */ |
30a6c652 MC |
4453 | priv->t.host_attrs.ac.class = &iscsi_host_class.class; |
4454 | priv->t.host_attrs.ac.match = iscsi_host_match; | |
f27fb2ef | 4455 | priv->t.host_attrs.ac.grp = &iscsi_host_group; |
32c6e1b9 | 4456 | priv->t.host_size = sizeof(struct iscsi_cls_host); |
30a6c652 MC |
4457 | transport_container_register(&priv->t.host_attrs); |
4458 | ||
0896b752 | 4459 | /* connection parameters */ |
0896b752 AA |
4460 | priv->conn_cont.ac.class = &iscsi_connection_class.class; |
4461 | priv->conn_cont.ac.match = iscsi_conn_match; | |
3128c6c7 | 4462 | priv->conn_cont.ac.grp = &iscsi_conn_group; |
0896b752 | 4463 | transport_container_register(&priv->conn_cont); |
1da177e4 | 4464 | |
0896b752 | 4465 | /* session parameters */ |
0896b752 AA |
4466 | priv->session_cont.ac.class = &iscsi_session_class.class; |
4467 | priv->session_cont.ac.match = iscsi_session_match; | |
1d063c17 | 4468 | priv->session_cont.ac.grp = &iscsi_session_group; |
0896b752 AA |
4469 | transport_container_register(&priv->session_cont); |
4470 | ||
0896b752 AA |
4471 | spin_lock_irqsave(&iscsi_transport_lock, flags); |
4472 | list_add(&priv->list, &iscsi_transports); | |
4473 | spin_unlock_irqrestore(&iscsi_transport_lock, flags); | |
4474 | ||
4475 | printk(KERN_NOTICE "iscsi: registered transport (%s)\n", tt->name); | |
7b8631b5 | 4476 | return &priv->t; |
1da177e4 | 4477 | |
ee959b00 TJ |
4478 | unregister_dev: |
4479 | device_unregister(&priv->dev); | |
d82ff9be | 4480 | return NULL; |
0896b752 AA |
4481 | free_priv: |
4482 | kfree(priv); | |
7b8631b5 | 4483 | return NULL; |
1da177e4 | 4484 | } |
0896b752 AA |
4485 | EXPORT_SYMBOL_GPL(iscsi_register_transport); |
4486 | ||
4487 | int iscsi_unregister_transport(struct iscsi_transport *tt) | |
4488 | { | |
4489 | struct iscsi_internal *priv; | |
4490 | unsigned long flags; | |
4491 | ||
4492 | BUG_ON(!tt); | |
4493 | ||
0b950672 | 4494 | mutex_lock(&rx_queue_mutex); |
0896b752 AA |
4495 | |
4496 | priv = iscsi_if_transport_lookup(tt); | |
4497 | BUG_ON (!priv); | |
4498 | ||
0896b752 AA |
4499 | spin_lock_irqsave(&iscsi_transport_lock, flags); |
4500 | list_del(&priv->list); | |
4501 | spin_unlock_irqrestore(&iscsi_transport_lock, flags); | |
4502 | ||
4503 | transport_container_unregister(&priv->conn_cont); | |
4504 | transport_container_unregister(&priv->session_cont); | |
30a6c652 | 4505 | transport_container_unregister(&priv->t.host_attrs); |
0896b752 | 4506 | |
ee959b00 TJ |
4507 | sysfs_remove_group(&priv->dev.kobj, &iscsi_transport_group); |
4508 | device_unregister(&priv->dev); | |
0b950672 | 4509 | mutex_unlock(&rx_queue_mutex); |
1da177e4 | 4510 | |
0896b752 AA |
4511 | return 0; |
4512 | } | |
4513 | EXPORT_SYMBOL_GPL(iscsi_unregister_transport); | |
1da177e4 | 4514 | |
1da177e4 LT |
4515 | static __init int iscsi_transport_init(void) |
4516 | { | |
0896b752 | 4517 | int err; |
a31f2d17 PNA |
4518 | struct netlink_kernel_cfg cfg = { |
4519 | .groups = 1, | |
4520 | .input = iscsi_if_rx, | |
4521 | }; | |
09492605 | 4522 | printk(KERN_INFO "Loading iSCSI transport class v%s.\n", |
f4246b33 MC |
4523 | ISCSI_TRANSPORT_VERSION); |
4524 | ||
41be1444 MC |
4525 | atomic_set(&iscsi_session_nr, 0); |
4526 | ||
0896b752 | 4527 | err = class_register(&iscsi_transport_class); |
1da177e4 LT |
4528 | if (err) |
4529 | return err; | |
0896b752 | 4530 | |
d82ff9be | 4531 | err = class_register(&iscsi_endpoint_class); |
0896b752 AA |
4532 | if (err) |
4533 | goto unregister_transport_class; | |
4534 | ||
8d07913d | 4535 | err = class_register(&iscsi_iface_class); |
d82ff9be MC |
4536 | if (err) |
4537 | goto unregister_endpoint_class; | |
4538 | ||
8d07913d MC |
4539 | err = transport_class_register(&iscsi_host_class); |
4540 | if (err) | |
4541 | goto unregister_iface_class; | |
4542 | ||
30a6c652 MC |
4543 | err = transport_class_register(&iscsi_connection_class); |
4544 | if (err) | |
4545 | goto unregister_host_class; | |
4546 | ||
0896b752 AA |
4547 | err = transport_class_register(&iscsi_session_class); |
4548 | if (err) | |
4549 | goto unregister_conn_class; | |
4550 | ||
c6a4bb2e AC |
4551 | err = bus_register(&iscsi_flashnode_bus); |
4552 | if (err) | |
4553 | goto unregister_session_class; | |
4554 | ||
9f00d977 | 4555 | nls = netlink_kernel_create(&init_net, NETLINK_ISCSI, &cfg); |
0896b752 AA |
4556 | if (!nls) { |
4557 | err = -ENOBUFS; | |
c6a4bb2e | 4558 | goto unregister_flashnode_bus; |
0896b752 AA |
4559 | } |
4560 | ||
d8bf541e | 4561 | iscsi_eh_timer_workq = create_singlethread_workqueue("iscsi_eh"); |
bcab2ccd WY |
4562 | if (!iscsi_eh_timer_workq) { |
4563 | err = -ENOMEM; | |
d8bf541e | 4564 | goto release_nls; |
bcab2ccd | 4565 | } |
d8bf541e | 4566 | |
43a145a3 | 4567 | return 0; |
0896b752 | 4568 | |
d8bf541e | 4569 | release_nls: |
b7c6ba6e | 4570 | netlink_kernel_release(nls); |
c6a4bb2e AC |
4571 | unregister_flashnode_bus: |
4572 | bus_unregister(&iscsi_flashnode_bus); | |
0896b752 AA |
4573 | unregister_session_class: |
4574 | transport_class_unregister(&iscsi_session_class); | |
4575 | unregister_conn_class: | |
4576 | transport_class_unregister(&iscsi_connection_class); | |
30a6c652 MC |
4577 | unregister_host_class: |
4578 | transport_class_unregister(&iscsi_host_class); | |
8d07913d MC |
4579 | unregister_iface_class: |
4580 | class_unregister(&iscsi_iface_class); | |
d82ff9be MC |
4581 | unregister_endpoint_class: |
4582 | class_unregister(&iscsi_endpoint_class); | |
0896b752 AA |
4583 | unregister_transport_class: |
4584 | class_unregister(&iscsi_transport_class); | |
4585 | return err; | |
1da177e4 LT |
4586 | } |
4587 | ||
4588 | static void __exit iscsi_transport_exit(void) | |
4589 | { | |
d8bf541e | 4590 | destroy_workqueue(iscsi_eh_timer_workq); |
b7c6ba6e | 4591 | netlink_kernel_release(nls); |
c6a4bb2e | 4592 | bus_unregister(&iscsi_flashnode_bus); |
0896b752 AA |
4593 | transport_class_unregister(&iscsi_connection_class); |
4594 | transport_class_unregister(&iscsi_session_class); | |
30a6c652 | 4595 | transport_class_unregister(&iscsi_host_class); |
d82ff9be | 4596 | class_unregister(&iscsi_endpoint_class); |
8d07913d | 4597 | class_unregister(&iscsi_iface_class); |
0896b752 | 4598 | class_unregister(&iscsi_transport_class); |
1da177e4 LT |
4599 | } |
4600 | ||
4601 | module_init(iscsi_transport_init); | |
4602 | module_exit(iscsi_transport_exit); | |
4603 | ||
0896b752 AA |
4604 | MODULE_AUTHOR("Mike Christie <michaelc@cs.wisc.edu>, " |
4605 | "Dmitry Yusupov <dmitry_yus@yahoo.com>, " | |
4606 | "Alex Aizman <itn780@yahoo.com>"); | |
4607 | MODULE_DESCRIPTION("iSCSI Transport Interface"); | |
1da177e4 | 4608 | MODULE_LICENSE("GPL"); |
f4246b33 | 4609 | MODULE_VERSION(ISCSI_TRANSPORT_VERSION); |
058548ae | 4610 | MODULE_ALIAS_NET_PF_PROTO(PF_NETLINK, NETLINK_ISCSI); |