2 * iSCSI transport class definitions
4 * Copyright (C) IBM Corporation, 2004
5 * Copyright (C) Mike Christie, 2004 - 2005
6 * Copyright (C) Dmitry Yusupov, 2004 - 2005
7 * Copyright (C) Alex Aizman, 2004 - 2005
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.
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.
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.
23 #include <linux/module.h>
24 #include <linux/mutex.h>
25 #include <linux/slab.h>
26 #include <linux/bsg-lib.h>
27 #include <linux/idr.h>
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>
34 #include <scsi/iscsi_if.h>
35 #include <scsi/scsi_cmnd.h>
36 #include <scsi/scsi_bsg_iscsi.h>
38 #define ISCSI_TRANSPORT_VERSION "2.0-870"
40 static int dbg_session;
41 module_param_named(debug_session, dbg_session, int,
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 "
49 module_param_named(debug_conn, dbg_conn, int,
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 "
56 #define ISCSI_DBG_TRANS_SESSION(_session, dbg_fmt, arg...) \
59 iscsi_cls_session_printk(KERN_INFO, _session, \
64 #define ISCSI_DBG_TRANS_CONN(_conn, dbg_fmt, arg...) \
67 iscsi_cls_conn_printk(KERN_INFO, _conn, \
72 struct iscsi_internal {
73 struct scsi_transport_template t;
74 struct iscsi_transport *iscsi_transport;
75 struct list_head list;
78 struct transport_container conn_cont;
79 struct transport_container session_cont;
82 static atomic_t iscsi_session_nr; /* sysfs session id for next new session */
83 static struct workqueue_struct *iscsi_eh_timer_workq;
85 static DEFINE_IDA(iscsi_sess_ida);
87 * list of registered transports and lock that must
88 * be held while accessing list. The iscsi_transport_lock must
89 * be acquired after the rx_queue_mutex.
91 static LIST_HEAD(iscsi_transports);
92 static DEFINE_SPINLOCK(iscsi_transport_lock);
94 #define to_iscsi_internal(tmpl) \
95 container_of(tmpl, struct iscsi_internal, t)
97 #define dev_to_iscsi_internal(_dev) \
98 container_of(_dev, struct iscsi_internal, dev)
100 static void iscsi_transport_release(struct device *dev)
102 struct iscsi_internal *priv = dev_to_iscsi_internal(dev);
107 * iscsi_transport_class represents the iscsi_transports that are
110 static struct class iscsi_transport_class = {
111 .name = "iscsi_transport",
112 .dev_release = iscsi_transport_release,
116 show_transport_handle(struct device *dev, struct device_attribute *attr,
119 struct iscsi_internal *priv = dev_to_iscsi_internal(dev);
120 return sprintf(buf, "%llu\n", (unsigned long long)iscsi_handle(priv->iscsi_transport));
122 static DEVICE_ATTR(handle, S_IRUGO, show_transport_handle, NULL);
124 #define show_transport_attr(name, format) \
126 show_transport_##name(struct device *dev, \
127 struct device_attribute *attr,char *buf) \
129 struct iscsi_internal *priv = dev_to_iscsi_internal(dev); \
130 return sprintf(buf, format"\n", priv->iscsi_transport->name); \
132 static DEVICE_ATTR(name, S_IRUGO, show_transport_##name, NULL);
134 show_transport_attr(caps, "0x%x");
136 static struct attribute *iscsi_transport_attrs[] = {
137 &dev_attr_handle.attr,
142 static struct attribute_group iscsi_transport_group = {
143 .attrs = iscsi_transport_attrs,
147 * iSCSI endpoint attrs
149 #define iscsi_dev_to_endpoint(_dev) \
150 container_of(_dev, struct iscsi_endpoint, dev)
152 #define ISCSI_ATTR(_prefix,_name,_mode,_show,_store) \
153 struct device_attribute dev_attr_##_prefix##_##_name = \
154 __ATTR(_name,_mode,_show,_store)
156 static void iscsi_endpoint_release(struct device *dev)
158 struct iscsi_endpoint *ep = iscsi_dev_to_endpoint(dev);
162 static struct class iscsi_endpoint_class = {
163 .name = "iscsi_endpoint",
164 .dev_release = iscsi_endpoint_release,
168 show_ep_handle(struct device *dev, struct device_attribute *attr, char *buf)
170 struct iscsi_endpoint *ep = iscsi_dev_to_endpoint(dev);
171 return sprintf(buf, "%llu\n", (unsigned long long) ep->id);
173 static ISCSI_ATTR(ep, handle, S_IRUGO, show_ep_handle, NULL);
175 static struct attribute *iscsi_endpoint_attrs[] = {
176 &dev_attr_ep_handle.attr,
180 static struct attribute_group iscsi_endpoint_group = {
181 .attrs = iscsi_endpoint_attrs,
184 #define ISCSI_MAX_EPID -1
186 static int iscsi_match_epid(struct device *dev, const void *data)
188 struct iscsi_endpoint *ep = iscsi_dev_to_endpoint(dev);
189 const uint64_t *epid = data;
191 return *epid == ep->id;
194 struct iscsi_endpoint *
195 iscsi_create_endpoint(int dd_size)
198 struct iscsi_endpoint *ep;
202 for (id = 1; id < ISCSI_MAX_EPID; id++) {
203 dev = class_find_device(&iscsi_endpoint_class, NULL, &id,
210 if (id == ISCSI_MAX_EPID) {
211 printk(KERN_ERR "Too many connections. Max supported %u\n",
216 ep = kzalloc(sizeof(*ep) + dd_size, GFP_KERNEL);
221 ep->dev.class = &iscsi_endpoint_class;
222 dev_set_name(&ep->dev, "ep-%llu", (unsigned long long) id);
223 err = device_register(&ep->dev);
227 err = sysfs_create_group(&ep->dev.kobj, &iscsi_endpoint_group);
232 ep->dd_data = &ep[1];
236 device_unregister(&ep->dev);
243 EXPORT_SYMBOL_GPL(iscsi_create_endpoint);
245 void iscsi_destroy_endpoint(struct iscsi_endpoint *ep)
247 sysfs_remove_group(&ep->dev.kobj, &iscsi_endpoint_group);
248 device_unregister(&ep->dev);
250 EXPORT_SYMBOL_GPL(iscsi_destroy_endpoint);
252 struct iscsi_endpoint *iscsi_lookup_endpoint(u64 handle)
254 struct iscsi_endpoint *ep;
257 dev = class_find_device(&iscsi_endpoint_class, NULL, &handle,
262 ep = iscsi_dev_to_endpoint(dev);
264 * we can drop this now because the interface will prevent
265 * removals and lookups from racing.
270 EXPORT_SYMBOL_GPL(iscsi_lookup_endpoint);
273 * Interface to display network param to sysfs
276 static void iscsi_iface_release(struct device *dev)
278 struct iscsi_iface *iface = iscsi_dev_to_iface(dev);
279 struct device *parent = iface->dev.parent;
286 static struct class iscsi_iface_class = {
287 .name = "iscsi_iface",
288 .dev_release = iscsi_iface_release,
291 #define ISCSI_IFACE_ATTR(_prefix, _name, _mode, _show, _store) \
292 struct device_attribute dev_attr_##_prefix##_##_name = \
293 __ATTR(_name, _mode, _show, _store)
295 /* iface attrs show */
296 #define iscsi_iface_attr_show(type, name, param_type, param) \
298 show_##type##_##name(struct device *dev, struct device_attribute *attr, \
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); \
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);
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);
314 /* generic read only ipv4 attribute */
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);
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);
345 /* generic read only ipv6 attribute */
346 iscsi_iface_net_attr(ipv6_iface, ipaddress, ISCSI_NET_PARAM_IPV6_ADDR);
347 iscsi_iface_net_attr(ipv6_iface, link_local_addr,
348 ISCSI_NET_PARAM_IPV6_LINKLOCAL);
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);
352 iscsi_iface_net_attr(ipv6_iface, link_local_autocfg,
353 ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG);
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);
376 /* common read only iface attribute */
377 iscsi_iface_net_attr(iface, enabled, ISCSI_NET_PARAM_IFACE_ENABLE);
378 iscsi_iface_net_attr(iface, vlan_id, ISCSI_NET_PARAM_VLAN_ID);
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);
381 iscsi_iface_net_attr(iface, mtu, ISCSI_NET_PARAM_MTU);
382 iscsi_iface_net_attr(iface, port, ISCSI_NET_PARAM_PORT);
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);
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);
418 static umode_t iscsi_iface_attr_is_visible(struct kobject *kobj,
419 struct attribute *attr, int i)
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;
427 if (attr == &dev_attr_iface_enabled.attr)
428 param = ISCSI_NET_PARAM_IFACE_ENABLE;
429 else if (attr == &dev_attr_iface_vlan_id.attr)
430 param = ISCSI_NET_PARAM_VLAN_ID;
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;
435 else if (attr == &dev_attr_iface_mtu.attr)
436 param = ISCSI_NET_PARAM_MTU;
437 else if (attr == &dev_attr_iface_port.attr)
438 param = ISCSI_NET_PARAM_PORT;
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;
493 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
494 if (attr == &dev_attr_ipv4_iface_ipaddress.attr)
495 param = ISCSI_NET_PARAM_IPV4_ADDR;
496 else if (attr == &dev_attr_ipv4_iface_gateway.attr)
497 param = ISCSI_NET_PARAM_IPV4_GW;
498 else if (attr == &dev_attr_ipv4_iface_subnet.attr)
499 param = ISCSI_NET_PARAM_IPV4_SUBNET;
500 else if (attr == &dev_attr_ipv4_iface_bootproto.attr)
501 param = ISCSI_NET_PARAM_IPV4_BOOTPROTO;
503 &dev_attr_ipv4_iface_dhcp_dns_address_en.attr)
504 param = ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN;
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;
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;
520 &dev_attr_ipv4_iface_dhcp_req_vendor_id_en.attr)
521 param = ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN;
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;
528 &dev_attr_ipv4_iface_dhcp_learn_iqn_en.attr)
529 param = ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN;
531 &dev_attr_ipv4_iface_fragment_disable.attr)
532 param = ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE;
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;
540 } else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6) {
541 if (attr == &dev_attr_ipv6_iface_ipaddress.attr)
542 param = ISCSI_NET_PARAM_IPV6_ADDR;
543 else if (attr == &dev_attr_ipv6_iface_link_local_addr.attr)
544 param = ISCSI_NET_PARAM_IPV6_LINKLOCAL;
545 else if (attr == &dev_attr_ipv6_iface_router_addr.attr)
546 param = ISCSI_NET_PARAM_IPV6_ROUTER;
547 else if (attr == &dev_attr_ipv6_iface_ipaddr_autocfg.attr)
548 param = ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG;
549 else if (attr == &dev_attr_ipv6_iface_link_local_autocfg.attr)
550 param = ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG;
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;
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;
579 WARN_ONCE(1, "Invalid iface attr");
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;
605 param_type = ISCSI_NET_PARAM;
608 return t->attr_is_visible(param_type, param);
611 static struct attribute *iscsi_iface_attrs[] = {
612 &dev_attr_iface_enabled.attr,
613 &dev_attr_iface_vlan_id.attr,
614 &dev_attr_iface_vlan_priority.attr,
615 &dev_attr_iface_vlan_enabled.attr,
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,
624 &dev_attr_ipv6_iface_link_local_autocfg.attr,
625 &dev_attr_iface_mtu.attr,
626 &dev_attr_iface_port.attr,
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,
683 static struct attribute_group iscsi_iface_group = {
684 .attrs = iscsi_iface_attrs,
685 .is_visible = iscsi_iface_attr_is_visible,
688 /* convert iscsi_ipaddress_state values to ascii string name */
689 static const struct {
690 enum iscsi_ipaddress_state value;
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" },
702 char *iscsi_get_ipaddress_state_name(enum iscsi_ipaddress_state port_state)
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;
715 EXPORT_SYMBOL_GPL(iscsi_get_ipaddress_state_name);
717 /* convert iscsi_router_state values to ascii string name */
718 static const struct {
719 enum iscsi_router_state value;
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" },
728 char *iscsi_get_router_state_name(enum iscsi_router_state router_state)
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;
741 EXPORT_SYMBOL_GPL(iscsi_get_router_state_name);
744 iscsi_create_iface(struct Scsi_Host *shost, struct iscsi_transport *transport,
745 uint32_t iface_type, uint32_t iface_num, int dd_size)
747 struct iscsi_iface *iface;
750 iface = kzalloc(sizeof(*iface) + dd_size, GFP_KERNEL);
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,
765 dev_set_name(&iface->dev, "ipv6-iface-%u-%u", shost->host_no,
768 err = device_register(&iface->dev);
772 err = sysfs_create_group(&iface->dev.kobj, &iscsi_iface_group);
777 iface->dd_data = &iface[1];
781 device_unregister(&iface->dev);
785 put_device(iface->dev.parent);
789 EXPORT_SYMBOL_GPL(iscsi_create_iface);
791 void iscsi_destroy_iface(struct iscsi_iface *iface)
793 sysfs_remove_group(&iface->dev.kobj, &iscsi_iface_group);
794 device_unregister(&iface->dev);
796 EXPORT_SYMBOL_GPL(iscsi_destroy_iface);
799 * Interface to display flash node params to sysfs
802 #define ISCSI_FLASHNODE_ATTR(_prefix, _name, _mode, _show, _store) \
803 struct device_attribute dev_attr_##_prefix##_##_name = \
804 __ATTR(_name, _mode, _show, _store)
806 /* flash node session attrs show */
807 #define iscsi_flashnode_sess_attr_show(type, name, param) \
809 show_##type##_##name(struct device *dev, struct device_attribute *attr, \
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); \
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);
824 /* Flash node session attributes */
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);
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,
907 static umode_t iscsi_flashnode_sess_attr_is_visible(struct kobject *kobj,
908 struct attribute *attr,
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;
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;
984 WARN_ONCE(1, "Invalid flashnode session attr");
988 return t->attr_is_visible(ISCSI_FLASHNODE_PARAM, param);
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,
996 static const struct attribute_group *iscsi_flashnode_sess_attr_groups[] = {
997 &iscsi_flashnode_sess_attr_group,
1001 static void iscsi_flashnode_sess_release(struct device *dev)
1003 struct iscsi_bus_flash_session *fnode_sess =
1004 iscsi_dev_to_flash_session(dev);
1006 kfree(fnode_sess->targetname);
1007 kfree(fnode_sess->targetalias);
1008 kfree(fnode_sess->portal_type);
1012 static const 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,
1018 /* flash node connection attrs show */
1019 #define iscsi_flashnode_conn_attr_show(type, name, param) \
1021 show_##type##_##name(struct device *dev, struct device_attribute *attr, \
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); \
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);
1037 /* Flash node connection attributes */
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);
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,
1109 static umode_t iscsi_flashnode_conn_attr_is_visible(struct kobject *kobj,
1110 struct attribute *attr,
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;
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;
1171 WARN_ONCE(1, "Invalid flashnode connection attr");
1175 return t->attr_is_visible(ISCSI_FLASHNODE_PARAM, param);
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,
1183 static const struct attribute_group *iscsi_flashnode_conn_attr_groups[] = {
1184 &iscsi_flashnode_conn_attr_group,
1188 static void iscsi_flashnode_conn_release(struct device *dev)
1190 struct iscsi_bus_flash_conn *fnode_conn = iscsi_dev_to_flash_conn(dev);
1192 kfree(fnode_conn->ipaddress);
1193 kfree(fnode_conn->redirect_ipaddr);
1194 kfree(fnode_conn->link_local_ipv6_addr);
1198 static const 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,
1204 static struct bus_type iscsi_flashnode_bus;
1206 int iscsi_flashnode_bus_match(struct device *dev,
1207 struct device_driver *drv)
1209 if (dev->bus == &iscsi_flashnode_bus)
1213 EXPORT_SYMBOL_GPL(iscsi_flashnode_bus_match);
1215 static struct bus_type iscsi_flashnode_bus = {
1216 .name = "iscsi_flashnode",
1217 .match = &iscsi_flashnode_bus_match,
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
1227 * Adds a sysfs entry for the flashnode session attributes
1230 * pointer to allocated flashnode sess on success
1233 struct iscsi_bus_flash_session *
1234 iscsi_create_flashnode_sess(struct Scsi_Host *shost, int index,
1235 struct iscsi_transport *transport,
1238 struct iscsi_bus_flash_session *fnode_sess;
1241 fnode_sess = kzalloc(sizeof(*fnode_sess) + dd_size, GFP_KERNEL);
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);
1253 err = device_register(&fnode_sess->dev);
1255 goto free_fnode_sess;
1258 fnode_sess->dd_data = &fnode_sess[1];
1266 EXPORT_SYMBOL_GPL(iscsi_create_flashnode_sess);
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
1275 * Adds a sysfs entry for the flashnode connection attributes
1278 * pointer to allocated flashnode conn on success
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,
1287 struct iscsi_bus_flash_conn *fnode_conn;
1290 fnode_conn = kzalloc(sizeof(*fnode_conn) + dd_size, GFP_KERNEL);
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);
1301 err = device_register(&fnode_conn->dev);
1303 goto free_fnode_conn;
1306 fnode_conn->dd_data = &fnode_conn[1];
1314 EXPORT_SYMBOL_GPL(iscsi_create_flashnode_conn);
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
1321 * Verifies if the passed device is flashnode conn device
1327 static int iscsi_is_flashnode_conn_dev(struct device *dev, void *data)
1329 return dev->bus == &iscsi_flashnode_bus;
1332 static int iscsi_destroy_flashnode_conn(struct iscsi_bus_flash_conn *fnode_conn)
1334 device_unregister(&fnode_conn->dev);
1338 static int flashnode_match_index(struct device *dev, void *data)
1340 struct iscsi_bus_flash_session *fnode_sess = NULL;
1343 if (!iscsi_flashnode_bus_match(dev, NULL))
1344 goto exit_match_index;
1346 fnode_sess = iscsi_dev_to_flash_session(dev);
1347 ret = (fnode_sess->target_id == *((int *)data)) ? 1 : 0;
1354 * iscsi_get_flashnode_by_index -finds flashnode session entry by index
1355 * @shost: pointer to host data
1356 * @idx: index to match
1358 * Finds the flashnode session object for the passed index
1361 * pointer to found flashnode session object on success
1364 static struct iscsi_bus_flash_session *
1365 iscsi_get_flashnode_by_index(struct Scsi_Host *shost, uint32_t idx)
1367 struct iscsi_bus_flash_session *fnode_sess = NULL;
1370 dev = device_find_child(&shost->shost_gendev, &idx,
1371 flashnode_match_index);
1373 fnode_sess = iscsi_dev_to_flash_session(dev);
1379 * iscsi_find_flashnode_sess - finds flashnode session entry
1380 * @shost: pointer to host data
1381 * @data: pointer to data containing value to use for comparison
1382 * @fn: function pointer that does actual comparison
1384 * Finds the flashnode session object comparing the data passed using logic
1385 * defined in passed function pointer
1388 * pointer to found flashnode session device object on success
1392 iscsi_find_flashnode_sess(struct Scsi_Host *shost, void *data,
1393 int (*fn)(struct device *dev, void *data))
1395 return device_find_child(&shost->shost_gendev, data, fn);
1397 EXPORT_SYMBOL_GPL(iscsi_find_flashnode_sess);
1400 * iscsi_find_flashnode_conn - finds flashnode connection entry
1401 * @fnode_sess: pointer to parent flashnode session entry
1403 * Finds the flashnode connection object comparing the data passed using logic
1404 * defined in passed function pointer
1407 * pointer to found flashnode connection device object on success
1411 iscsi_find_flashnode_conn(struct iscsi_bus_flash_session *fnode_sess)
1413 return device_find_child(&fnode_sess->dev, NULL,
1414 iscsi_is_flashnode_conn_dev);
1416 EXPORT_SYMBOL_GPL(iscsi_find_flashnode_conn);
1418 static int iscsi_iter_destroy_flashnode_conn_fn(struct device *dev, void *data)
1420 if (!iscsi_is_flashnode_conn_dev(dev, NULL))
1423 return iscsi_destroy_flashnode_conn(iscsi_dev_to_flash_conn(dev));
1427 * iscsi_destroy_flashnode_sess - destroy flashnode session entry
1428 * @fnode_sess: pointer to flashnode session entry to be destroyed
1430 * Deletes the flashnode session entry and all children flashnode connection
1431 * entries from sysfs
1433 void iscsi_destroy_flashnode_sess(struct iscsi_bus_flash_session *fnode_sess)
1437 err = device_for_each_child(&fnode_sess->dev, NULL,
1438 iscsi_iter_destroy_flashnode_conn_fn);
1440 pr_err("Could not delete all connections for %s. Error %d.\n",
1441 fnode_sess->dev.kobj.name, err);
1443 device_unregister(&fnode_sess->dev);
1445 EXPORT_SYMBOL_GPL(iscsi_destroy_flashnode_sess);
1447 static int iscsi_iter_destroy_flashnode_fn(struct device *dev, void *data)
1449 if (!iscsi_flashnode_bus_match(dev, NULL))
1452 iscsi_destroy_flashnode_sess(iscsi_dev_to_flash_session(dev));
1457 * iscsi_destroy_all_flashnode - destroy all flashnode session entries
1458 * @shost: pointer to host data
1460 * Destroys all the flashnode session entries and all corresponding children
1461 * flashnode connection entries from sysfs
1463 void iscsi_destroy_all_flashnode(struct Scsi_Host *shost)
1465 device_for_each_child(&shost->shost_gendev, NULL,
1466 iscsi_iter_destroy_flashnode_fn);
1468 EXPORT_SYMBOL_GPL(iscsi_destroy_all_flashnode);
1474 * iscsi_bsg_host_dispatch - Dispatch command to LLD.
1475 * @job: bsg job to be processed
1477 static int iscsi_bsg_host_dispatch(struct bsg_job *job)
1479 struct Scsi_Host *shost = iscsi_job_to_shost(job);
1480 struct iscsi_bsg_request *req = job->request;
1481 struct iscsi_bsg_reply *reply = job->reply;
1482 struct iscsi_internal *i = to_iscsi_internal(shost->transportt);
1483 int cmdlen = sizeof(uint32_t); /* start with length of msgcode */
1486 /* check if we have the msgcode value at least */
1487 if (job->request_len < sizeof(uint32_t)) {
1492 /* Validate the host command */
1493 switch (req->msgcode) {
1494 case ISCSI_BSG_HST_VENDOR:
1495 cmdlen += sizeof(struct iscsi_bsg_host_vendor);
1496 if ((shost->hostt->vendor_id == 0L) ||
1497 (req->rqst_data.h_vendor.vendor_id !=
1498 shost->hostt->vendor_id)) {
1508 /* check if we really have all the request data needed */
1509 if (job->request_len < cmdlen) {
1514 ret = i->iscsi_transport->bsg_request(job);
1519 /* return the errno failure code as the only status */
1520 BUG_ON(job->reply_len < sizeof(uint32_t));
1521 reply->reply_payload_rcv_len = 0;
1522 reply->result = ret;
1523 job->reply_len = sizeof(uint32_t);
1524 bsg_job_done(job, ret, 0);
1529 * iscsi_bsg_host_add - Create and add the bsg hooks to receive requests
1530 * @shost: shost for iscsi_host
1531 * @ihost: iscsi_cls_host adding the structures to
1534 iscsi_bsg_host_add(struct Scsi_Host *shost, struct iscsi_cls_host *ihost)
1536 struct device *dev = &shost->shost_gendev;
1537 struct iscsi_internal *i = to_iscsi_internal(shost->transportt);
1538 struct request_queue *q;
1541 if (!i->iscsi_transport->bsg_request)
1544 snprintf(bsg_name, sizeof(bsg_name), "iscsi_host%d", shost->host_no);
1545 q = bsg_setup_queue(dev, bsg_name, iscsi_bsg_host_dispatch, NULL, 0);
1547 shost_printk(KERN_ERR, shost, "bsg interface failed to "
1548 "initialize - no request queue\n");
1551 __scsi_init_queue(shost, q);
1557 static int iscsi_setup_host(struct transport_container *tc, struct device *dev,
1558 struct device *cdev)
1560 struct Scsi_Host *shost = dev_to_shost(dev);
1561 struct iscsi_cls_host *ihost = shost->shost_data;
1563 memset(ihost, 0, sizeof(*ihost));
1564 atomic_set(&ihost->nr_scans, 0);
1565 mutex_init(&ihost->mutex);
1567 iscsi_bsg_host_add(shost, ihost);
1568 /* ignore any bsg add error - we just can't do sgio */
1573 static int iscsi_remove_host(struct transport_container *tc,
1574 struct device *dev, struct device *cdev)
1576 struct Scsi_Host *shost = dev_to_shost(dev);
1577 struct iscsi_cls_host *ihost = shost->shost_data;
1579 bsg_remove_queue(ihost->bsg_q);
1583 static DECLARE_TRANSPORT_CLASS(iscsi_host_class,
1589 static DECLARE_TRANSPORT_CLASS(iscsi_session_class,
1595 static DECLARE_TRANSPORT_CLASS(iscsi_connection_class,
1601 static struct sock *nls;
1602 static DEFINE_MUTEX(rx_queue_mutex);
1604 static LIST_HEAD(sesslist);
1605 static DEFINE_SPINLOCK(sesslock);
1606 static LIST_HEAD(connlist);
1607 static DEFINE_SPINLOCK(connlock);
1609 static uint32_t iscsi_conn_get_sid(struct iscsi_cls_conn *conn)
1611 struct iscsi_cls_session *sess = iscsi_dev_to_session(conn->dev.parent);
1616 * Returns the matching session to a given sid
1618 static struct iscsi_cls_session *iscsi_session_lookup(uint32_t sid)
1620 unsigned long flags;
1621 struct iscsi_cls_session *sess;
1623 spin_lock_irqsave(&sesslock, flags);
1624 list_for_each_entry(sess, &sesslist, sess_list) {
1625 if (sess->sid == sid) {
1626 spin_unlock_irqrestore(&sesslock, flags);
1630 spin_unlock_irqrestore(&sesslock, flags);
1635 * Returns the matching connection to a given sid / cid tuple
1637 static struct iscsi_cls_conn *iscsi_conn_lookup(uint32_t sid, uint32_t cid)
1639 unsigned long flags;
1640 struct iscsi_cls_conn *conn;
1642 spin_lock_irqsave(&connlock, flags);
1643 list_for_each_entry(conn, &connlist, conn_list) {
1644 if ((conn->cid == cid) && (iscsi_conn_get_sid(conn) == sid)) {
1645 spin_unlock_irqrestore(&connlock, flags);
1649 spin_unlock_irqrestore(&connlock, flags);
1654 * The following functions can be used by LLDs that allocate
1655 * their own scsi_hosts or by software iscsi LLDs
1660 } iscsi_session_state_names[] = {
1661 { ISCSI_SESSION_LOGGED_IN, "LOGGED_IN" },
1662 { ISCSI_SESSION_FAILED, "FAILED" },
1663 { ISCSI_SESSION_FREE, "FREE" },
1666 static const char *iscsi_session_state_name(int state)
1671 for (i = 0; i < ARRAY_SIZE(iscsi_session_state_names); i++) {
1672 if (iscsi_session_state_names[i].value == state) {
1673 name = iscsi_session_state_names[i].name;
1680 int iscsi_session_chkready(struct iscsi_cls_session *session)
1682 unsigned long flags;
1685 spin_lock_irqsave(&session->lock, flags);
1686 switch (session->state) {
1687 case ISCSI_SESSION_LOGGED_IN:
1690 case ISCSI_SESSION_FAILED:
1691 err = DID_IMM_RETRY << 16;
1693 case ISCSI_SESSION_FREE:
1694 err = DID_TRANSPORT_FAILFAST << 16;
1697 err = DID_NO_CONNECT << 16;
1700 spin_unlock_irqrestore(&session->lock, flags);
1703 EXPORT_SYMBOL_GPL(iscsi_session_chkready);
1705 int iscsi_is_session_online(struct iscsi_cls_session *session)
1707 unsigned long flags;
1710 spin_lock_irqsave(&session->lock, flags);
1711 if (session->state == ISCSI_SESSION_LOGGED_IN)
1713 spin_unlock_irqrestore(&session->lock, flags);
1716 EXPORT_SYMBOL_GPL(iscsi_is_session_online);
1718 static void iscsi_session_release(struct device *dev)
1720 struct iscsi_cls_session *session = iscsi_dev_to_session(dev);
1721 struct Scsi_Host *shost;
1723 shost = iscsi_session_to_shost(session);
1724 scsi_host_put(shost);
1725 ISCSI_DBG_TRANS_SESSION(session, "Completing session release\n");
1729 int iscsi_is_session_dev(const struct device *dev)
1731 return dev->release == iscsi_session_release;
1733 EXPORT_SYMBOL_GPL(iscsi_is_session_dev);
1735 static int iscsi_iter_session_fn(struct device *dev, void *data)
1737 void (* fn) (struct iscsi_cls_session *) = data;
1739 if (!iscsi_is_session_dev(dev))
1741 fn(iscsi_dev_to_session(dev));
1745 void iscsi_host_for_each_session(struct Scsi_Host *shost,
1746 void (*fn)(struct iscsi_cls_session *))
1748 device_for_each_child(&shost->shost_gendev, fn,
1749 iscsi_iter_session_fn);
1751 EXPORT_SYMBOL_GPL(iscsi_host_for_each_session);
1754 * iscsi_scan_finished - helper to report when running scans are done
1756 * @time: scan run time
1758 * This function can be used by drives like qla4xxx to report to the scsi
1759 * layer when the scans it kicked off at module load time are done.
1761 int iscsi_scan_finished(struct Scsi_Host *shost, unsigned long time)
1763 struct iscsi_cls_host *ihost = shost->shost_data;
1765 * qla4xxx will have kicked off some session unblocks before calling
1766 * scsi_scan_host, so just wait for them to complete.
1768 return !atomic_read(&ihost->nr_scans);
1770 EXPORT_SYMBOL_GPL(iscsi_scan_finished);
1772 struct iscsi_scan_data {
1773 unsigned int channel;
1776 enum scsi_scan_mode rescan;
1779 static int iscsi_user_scan_session(struct device *dev, void *data)
1781 struct iscsi_scan_data *scan_data = data;
1782 struct iscsi_cls_session *session;
1783 struct Scsi_Host *shost;
1784 struct iscsi_cls_host *ihost;
1785 unsigned long flags;
1788 if (!iscsi_is_session_dev(dev))
1791 session = iscsi_dev_to_session(dev);
1793 ISCSI_DBG_TRANS_SESSION(session, "Scanning session\n");
1795 shost = iscsi_session_to_shost(session);
1796 ihost = shost->shost_data;
1798 mutex_lock(&ihost->mutex);
1799 spin_lock_irqsave(&session->lock, flags);
1800 if (session->state != ISCSI_SESSION_LOGGED_IN) {
1801 spin_unlock_irqrestore(&session->lock, flags);
1802 goto user_scan_exit;
1804 id = session->target_id;
1805 spin_unlock_irqrestore(&session->lock, flags);
1807 if (id != ISCSI_MAX_TARGET) {
1808 if ((scan_data->channel == SCAN_WILD_CARD ||
1809 scan_data->channel == 0) &&
1810 (scan_data->id == SCAN_WILD_CARD ||
1811 scan_data->id == id))
1812 scsi_scan_target(&session->dev, 0, id,
1813 scan_data->lun, scan_data->rescan);
1817 mutex_unlock(&ihost->mutex);
1818 ISCSI_DBG_TRANS_SESSION(session, "Completed session scan\n");
1822 static int iscsi_user_scan(struct Scsi_Host *shost, uint channel,
1825 struct iscsi_scan_data scan_data;
1827 scan_data.channel = channel;
1829 scan_data.lun = lun;
1830 scan_data.rescan = SCSI_SCAN_MANUAL;
1832 return device_for_each_child(&shost->shost_gendev, &scan_data,
1833 iscsi_user_scan_session);
1836 static void iscsi_scan_session(struct work_struct *work)
1838 struct iscsi_cls_session *session =
1839 container_of(work, struct iscsi_cls_session, scan_work);
1840 struct Scsi_Host *shost = iscsi_session_to_shost(session);
1841 struct iscsi_cls_host *ihost = shost->shost_data;
1842 struct iscsi_scan_data scan_data;
1844 scan_data.channel = 0;
1845 scan_data.id = SCAN_WILD_CARD;
1846 scan_data.lun = SCAN_WILD_CARD;
1847 scan_data.rescan = SCSI_SCAN_RESCAN;
1849 iscsi_user_scan_session(&session->dev, &scan_data);
1850 atomic_dec(&ihost->nr_scans);
1854 * iscsi_block_scsi_eh - block scsi eh until session state has transistioned
1855 * @cmd: scsi cmd passed to scsi eh handler
1857 * If the session is down this function will wait for the recovery
1858 * timer to fire or for the session to be logged back in. If the
1859 * recovery timer fires then FAST_IO_FAIL is returned. The caller
1860 * should pass this error value to the scsi eh.
1862 int iscsi_block_scsi_eh(struct scsi_cmnd *cmd)
1864 struct iscsi_cls_session *session =
1865 starget_to_session(scsi_target(cmd->device));
1866 unsigned long flags;
1869 spin_lock_irqsave(&session->lock, flags);
1870 while (session->state != ISCSI_SESSION_LOGGED_IN) {
1871 if (session->state == ISCSI_SESSION_FREE) {
1875 spin_unlock_irqrestore(&session->lock, flags);
1877 spin_lock_irqsave(&session->lock, flags);
1879 spin_unlock_irqrestore(&session->lock, flags);
1882 EXPORT_SYMBOL_GPL(iscsi_block_scsi_eh);
1884 static void session_recovery_timedout(struct work_struct *work)
1886 struct iscsi_cls_session *session =
1887 container_of(work, struct iscsi_cls_session,
1888 recovery_work.work);
1889 unsigned long flags;
1891 iscsi_cls_session_printk(KERN_INFO, session,
1892 "session recovery timed out after %d secs\n",
1893 session->recovery_tmo);
1895 spin_lock_irqsave(&session->lock, flags);
1896 switch (session->state) {
1897 case ISCSI_SESSION_FAILED:
1898 session->state = ISCSI_SESSION_FREE;
1900 case ISCSI_SESSION_LOGGED_IN:
1901 case ISCSI_SESSION_FREE:
1902 /* we raced with the unblock's flush */
1903 spin_unlock_irqrestore(&session->lock, flags);
1906 spin_unlock_irqrestore(&session->lock, flags);
1908 if (session->transport->session_recovery_timedout)
1909 session->transport->session_recovery_timedout(session);
1911 ISCSI_DBG_TRANS_SESSION(session, "Unblocking SCSI target\n");
1912 scsi_target_unblock(&session->dev, SDEV_TRANSPORT_OFFLINE);
1913 ISCSI_DBG_TRANS_SESSION(session, "Completed unblocking SCSI target\n");
1916 static void __iscsi_unblock_session(struct work_struct *work)
1918 struct iscsi_cls_session *session =
1919 container_of(work, struct iscsi_cls_session,
1921 struct Scsi_Host *shost = iscsi_session_to_shost(session);
1922 struct iscsi_cls_host *ihost = shost->shost_data;
1923 unsigned long flags;
1925 ISCSI_DBG_TRANS_SESSION(session, "Unblocking session\n");
1927 * The recovery and unblock work get run from the same workqueue,
1928 * so try to cancel it if it was going to run after this unblock.
1930 cancel_delayed_work(&session->recovery_work);
1931 spin_lock_irqsave(&session->lock, flags);
1932 session->state = ISCSI_SESSION_LOGGED_IN;
1933 spin_unlock_irqrestore(&session->lock, flags);
1935 scsi_target_unblock(&session->dev, SDEV_RUNNING);
1937 * Only do kernel scanning if the driver is properly hooked into
1938 * the async scanning code (drivers like iscsi_tcp do login and
1939 * scanning from userspace).
1941 if (shost->hostt->scan_finished) {
1942 if (scsi_queue_work(shost, &session->scan_work))
1943 atomic_inc(&ihost->nr_scans);
1945 ISCSI_DBG_TRANS_SESSION(session, "Completed unblocking session\n");
1949 * iscsi_unblock_session - set a session as logged in and start IO.
1950 * @session: iscsi session
1952 * Mark a session as ready to accept IO.
1954 void iscsi_unblock_session(struct iscsi_cls_session *session)
1956 queue_work(iscsi_eh_timer_workq, &session->unblock_work);
1958 * make sure all the events have completed before tell the driver
1961 flush_workqueue(iscsi_eh_timer_workq);
1963 EXPORT_SYMBOL_GPL(iscsi_unblock_session);
1965 static void __iscsi_block_session(struct work_struct *work)
1967 struct iscsi_cls_session *session =
1968 container_of(work, struct iscsi_cls_session,
1970 unsigned long flags;
1972 ISCSI_DBG_TRANS_SESSION(session, "Blocking session\n");
1973 spin_lock_irqsave(&session->lock, flags);
1974 session->state = ISCSI_SESSION_FAILED;
1975 spin_unlock_irqrestore(&session->lock, flags);
1976 scsi_target_block(&session->dev);
1977 ISCSI_DBG_TRANS_SESSION(session, "Completed SCSI target blocking\n");
1978 if (session->recovery_tmo >= 0)
1979 queue_delayed_work(iscsi_eh_timer_workq,
1980 &session->recovery_work,
1981 session->recovery_tmo * HZ);
1984 void iscsi_block_session(struct iscsi_cls_session *session)
1986 queue_work(iscsi_eh_timer_workq, &session->block_work);
1988 EXPORT_SYMBOL_GPL(iscsi_block_session);
1990 static void __iscsi_unbind_session(struct work_struct *work)
1992 struct iscsi_cls_session *session =
1993 container_of(work, struct iscsi_cls_session,
1995 struct Scsi_Host *shost = iscsi_session_to_shost(session);
1996 struct iscsi_cls_host *ihost = shost->shost_data;
1997 unsigned long flags;
1998 unsigned int target_id;
2000 ISCSI_DBG_TRANS_SESSION(session, "Unbinding session\n");
2002 /* Prevent new scans and make sure scanning is not in progress */
2003 mutex_lock(&ihost->mutex);
2004 spin_lock_irqsave(&session->lock, flags);
2005 if (session->target_id == ISCSI_MAX_TARGET) {
2006 spin_unlock_irqrestore(&session->lock, flags);
2007 mutex_unlock(&ihost->mutex);
2011 target_id = session->target_id;
2012 session->target_id = ISCSI_MAX_TARGET;
2013 spin_unlock_irqrestore(&session->lock, flags);
2014 mutex_unlock(&ihost->mutex);
2016 if (session->ida_used)
2017 ida_simple_remove(&iscsi_sess_ida, target_id);
2019 scsi_remove_target(&session->dev);
2020 iscsi_session_event(session, ISCSI_KEVENT_UNBIND_SESSION);
2021 ISCSI_DBG_TRANS_SESSION(session, "Completed target removal\n");
2024 struct iscsi_cls_session *
2025 iscsi_alloc_session(struct Scsi_Host *shost, struct iscsi_transport *transport,
2028 struct iscsi_cls_session *session;
2030 session = kzalloc(sizeof(*session) + dd_size,
2035 session->transport = transport;
2036 session->creator = -1;
2037 session->recovery_tmo = 120;
2038 session->recovery_tmo_sysfs_override = false;
2039 session->state = ISCSI_SESSION_FREE;
2040 INIT_DELAYED_WORK(&session->recovery_work, session_recovery_timedout);
2041 INIT_LIST_HEAD(&session->sess_list);
2042 INIT_WORK(&session->unblock_work, __iscsi_unblock_session);
2043 INIT_WORK(&session->block_work, __iscsi_block_session);
2044 INIT_WORK(&session->unbind_work, __iscsi_unbind_session);
2045 INIT_WORK(&session->scan_work, iscsi_scan_session);
2046 spin_lock_init(&session->lock);
2048 /* this is released in the dev's release function */
2049 scsi_host_get(shost);
2050 session->dev.parent = &shost->shost_gendev;
2051 session->dev.release = iscsi_session_release;
2052 device_initialize(&session->dev);
2054 session->dd_data = &session[1];
2056 ISCSI_DBG_TRANS_SESSION(session, "Completed session allocation\n");
2059 EXPORT_SYMBOL_GPL(iscsi_alloc_session);
2061 int iscsi_add_session(struct iscsi_cls_session *session, unsigned int target_id)
2063 unsigned long flags;
2067 session->sid = atomic_add_return(1, &iscsi_session_nr);
2069 if (target_id == ISCSI_MAX_TARGET) {
2070 id = ida_simple_get(&iscsi_sess_ida, 0, 0, GFP_KERNEL);
2073 iscsi_cls_session_printk(KERN_ERR, session,
2074 "Failure in Target ID Allocation\n");
2077 session->target_id = (unsigned int)id;
2078 session->ida_used = true;
2080 session->target_id = target_id;
2082 dev_set_name(&session->dev, "session%u", session->sid);
2083 err = device_add(&session->dev);
2085 iscsi_cls_session_printk(KERN_ERR, session,
2086 "could not register session's dev\n");
2089 transport_register_device(&session->dev);
2091 spin_lock_irqsave(&sesslock, flags);
2092 list_add(&session->sess_list, &sesslist);
2093 spin_unlock_irqrestore(&sesslock, flags);
2095 iscsi_session_event(session, ISCSI_KEVENT_CREATE_SESSION);
2096 ISCSI_DBG_TRANS_SESSION(session, "Completed session adding\n");
2100 if (session->ida_used)
2101 ida_simple_remove(&iscsi_sess_ida, session->target_id);
2105 EXPORT_SYMBOL_GPL(iscsi_add_session);
2108 * iscsi_create_session - create iscsi class session
2110 * @transport: iscsi transport
2111 * @dd_size: private driver data size
2112 * @target_id: which target
2114 * This can be called from a LLD or iscsi_transport.
2116 struct iscsi_cls_session *
2117 iscsi_create_session(struct Scsi_Host *shost, struct iscsi_transport *transport,
2118 int dd_size, unsigned int target_id)
2120 struct iscsi_cls_session *session;
2122 session = iscsi_alloc_session(shost, transport, dd_size);
2126 if (iscsi_add_session(session, target_id)) {
2127 iscsi_free_session(session);
2132 EXPORT_SYMBOL_GPL(iscsi_create_session);
2134 static void iscsi_conn_release(struct device *dev)
2136 struct iscsi_cls_conn *conn = iscsi_dev_to_conn(dev);
2137 struct device *parent = conn->dev.parent;
2139 ISCSI_DBG_TRANS_CONN(conn, "Releasing conn\n");
2144 static int iscsi_is_conn_dev(const struct device *dev)
2146 return dev->release == iscsi_conn_release;
2149 static int iscsi_iter_destroy_conn_fn(struct device *dev, void *data)
2151 if (!iscsi_is_conn_dev(dev))
2153 return iscsi_destroy_conn(iscsi_dev_to_conn(dev));
2156 void iscsi_remove_session(struct iscsi_cls_session *session)
2158 unsigned long flags;
2161 ISCSI_DBG_TRANS_SESSION(session, "Removing session\n");
2163 spin_lock_irqsave(&sesslock, flags);
2164 list_del(&session->sess_list);
2165 spin_unlock_irqrestore(&sesslock, flags);
2167 /* make sure there are no blocks/unblocks queued */
2168 flush_workqueue(iscsi_eh_timer_workq);
2169 /* make sure the timedout callout is not running */
2170 if (!cancel_delayed_work(&session->recovery_work))
2171 flush_workqueue(iscsi_eh_timer_workq);
2173 * If we are blocked let commands flow again. The lld or iscsi
2174 * layer should set up the queuecommand to fail commands.
2175 * We assume that LLD will not be calling block/unblock while
2176 * removing the session.
2178 spin_lock_irqsave(&session->lock, flags);
2179 session->state = ISCSI_SESSION_FREE;
2180 spin_unlock_irqrestore(&session->lock, flags);
2182 scsi_target_unblock(&session->dev, SDEV_TRANSPORT_OFFLINE);
2183 /* flush running scans then delete devices */
2184 flush_work(&session->scan_work);
2185 __iscsi_unbind_session(&session->unbind_work);
2187 /* hw iscsi may not have removed all connections from session */
2188 err = device_for_each_child(&session->dev, NULL,
2189 iscsi_iter_destroy_conn_fn);
2191 iscsi_cls_session_printk(KERN_ERR, session,
2192 "Could not delete all connections "
2193 "for session. Error %d.\n", err);
2195 transport_unregister_device(&session->dev);
2197 ISCSI_DBG_TRANS_SESSION(session, "Completing session removal\n");
2198 device_del(&session->dev);
2200 EXPORT_SYMBOL_GPL(iscsi_remove_session);
2202 void iscsi_free_session(struct iscsi_cls_session *session)
2204 ISCSI_DBG_TRANS_SESSION(session, "Freeing session\n");
2205 iscsi_session_event(session, ISCSI_KEVENT_DESTROY_SESSION);
2206 put_device(&session->dev);
2208 EXPORT_SYMBOL_GPL(iscsi_free_session);
2211 * iscsi_create_conn - create iscsi class connection
2212 * @session: iscsi cls session
2213 * @dd_size: private driver data size
2214 * @cid: connection id
2216 * This can be called from a LLD or iscsi_transport. The connection
2217 * is child of the session so cid must be unique for all connections
2220 * Since we do not support MCS, cid will normally be zero. In some cases
2221 * for software iscsi we could be trying to preallocate a connection struct
2222 * in which case there could be two connection structs and cid would be
2225 struct iscsi_cls_conn *
2226 iscsi_create_conn(struct iscsi_cls_session *session, int dd_size, uint32_t cid)
2228 struct iscsi_transport *transport = session->transport;
2229 struct iscsi_cls_conn *conn;
2230 unsigned long flags;
2233 conn = kzalloc(sizeof(*conn) + dd_size, GFP_KERNEL);
2237 conn->dd_data = &conn[1];
2239 mutex_init(&conn->ep_mutex);
2240 INIT_LIST_HEAD(&conn->conn_list);
2241 conn->transport = transport;
2244 /* this is released in the dev's release function */
2245 if (!get_device(&session->dev))
2248 dev_set_name(&conn->dev, "connection%d:%u", session->sid, cid);
2249 conn->dev.parent = &session->dev;
2250 conn->dev.release = iscsi_conn_release;
2251 err = device_register(&conn->dev);
2253 iscsi_cls_session_printk(KERN_ERR, session, "could not "
2254 "register connection's dev\n");
2255 goto release_parent_ref;
2257 transport_register_device(&conn->dev);
2259 spin_lock_irqsave(&connlock, flags);
2260 list_add(&conn->conn_list, &connlist);
2261 spin_unlock_irqrestore(&connlock, flags);
2263 ISCSI_DBG_TRANS_CONN(conn, "Completed conn creation\n");
2267 put_device(&session->dev);
2273 EXPORT_SYMBOL_GPL(iscsi_create_conn);
2276 * iscsi_destroy_conn - destroy iscsi class connection
2277 * @conn: iscsi cls session
2279 * This can be called from a LLD or iscsi_transport.
2281 int iscsi_destroy_conn(struct iscsi_cls_conn *conn)
2283 unsigned long flags;
2285 spin_lock_irqsave(&connlock, flags);
2286 list_del(&conn->conn_list);
2287 spin_unlock_irqrestore(&connlock, flags);
2289 transport_unregister_device(&conn->dev);
2290 ISCSI_DBG_TRANS_CONN(conn, "Completing conn destruction\n");
2291 device_unregister(&conn->dev);
2294 EXPORT_SYMBOL_GPL(iscsi_destroy_conn);
2297 * iscsi interface functions
2299 static struct iscsi_internal *
2300 iscsi_if_transport_lookup(struct iscsi_transport *tt)
2302 struct iscsi_internal *priv;
2303 unsigned long flags;
2305 spin_lock_irqsave(&iscsi_transport_lock, flags);
2306 list_for_each_entry(priv, &iscsi_transports, list) {
2307 if (tt == priv->iscsi_transport) {
2308 spin_unlock_irqrestore(&iscsi_transport_lock, flags);
2312 spin_unlock_irqrestore(&iscsi_transport_lock, flags);
2317 iscsi_multicast_skb(struct sk_buff *skb, uint32_t group, gfp_t gfp)
2319 return nlmsg_multicast(nls, skb, 0, group, gfp);
2323 iscsi_unicast_skb(struct sk_buff *skb, u32 portid)
2325 return nlmsg_unicast(nls, skb, portid);
2328 int iscsi_recv_pdu(struct iscsi_cls_conn *conn, struct iscsi_hdr *hdr,
2329 char *data, uint32_t data_size)
2331 struct nlmsghdr *nlh;
2332 struct sk_buff *skb;
2333 struct iscsi_uevent *ev;
2335 struct iscsi_internal *priv;
2336 int len = nlmsg_total_size(sizeof(*ev) + sizeof(struct iscsi_hdr) +
2339 priv = iscsi_if_transport_lookup(conn->transport);
2343 skb = alloc_skb(len, GFP_ATOMIC);
2345 iscsi_conn_error_event(conn, ISCSI_ERR_CONN_FAILED);
2346 iscsi_cls_conn_printk(KERN_ERR, conn, "can not deliver "
2347 "control PDU: OOM\n");
2351 nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0);
2352 ev = nlmsg_data(nlh);
2353 memset(ev, 0, sizeof(*ev));
2354 ev->transport_handle = iscsi_handle(conn->transport);
2355 ev->type = ISCSI_KEVENT_RECV_PDU;
2356 ev->r.recv_req.cid = conn->cid;
2357 ev->r.recv_req.sid = iscsi_conn_get_sid(conn);
2358 pdu = (char*)ev + sizeof(*ev);
2359 memcpy(pdu, hdr, sizeof(struct iscsi_hdr));
2360 memcpy(pdu + sizeof(struct iscsi_hdr), data, data_size);
2362 return iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_ATOMIC);
2364 EXPORT_SYMBOL_GPL(iscsi_recv_pdu);
2366 int iscsi_offload_mesg(struct Scsi_Host *shost,
2367 struct iscsi_transport *transport, uint32_t type,
2368 char *data, uint16_t data_size)
2370 struct nlmsghdr *nlh;
2371 struct sk_buff *skb;
2372 struct iscsi_uevent *ev;
2373 int len = nlmsg_total_size(sizeof(*ev) + data_size);
2375 skb = alloc_skb(len, GFP_ATOMIC);
2377 printk(KERN_ERR "can not deliver iscsi offload message:OOM\n");
2381 nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0);
2382 ev = nlmsg_data(nlh);
2383 memset(ev, 0, sizeof(*ev));
2385 ev->transport_handle = iscsi_handle(transport);
2387 case ISCSI_KEVENT_PATH_REQ:
2388 ev->r.req_path.host_no = shost->host_no;
2390 case ISCSI_KEVENT_IF_DOWN:
2391 ev->r.notify_if_down.host_no = shost->host_no;
2395 memcpy((char *)ev + sizeof(*ev), data, data_size);
2397 return iscsi_multicast_skb(skb, ISCSI_NL_GRP_UIP, GFP_ATOMIC);
2399 EXPORT_SYMBOL_GPL(iscsi_offload_mesg);
2401 void iscsi_conn_error_event(struct iscsi_cls_conn *conn, enum iscsi_err error)
2403 struct nlmsghdr *nlh;
2404 struct sk_buff *skb;
2405 struct iscsi_uevent *ev;
2406 struct iscsi_internal *priv;
2407 int len = nlmsg_total_size(sizeof(*ev));
2409 priv = iscsi_if_transport_lookup(conn->transport);
2413 skb = alloc_skb(len, GFP_ATOMIC);
2415 iscsi_cls_conn_printk(KERN_ERR, conn, "gracefully ignored "
2416 "conn error (%d)\n", error);
2420 nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0);
2421 ev = nlmsg_data(nlh);
2422 ev->transport_handle = iscsi_handle(conn->transport);
2423 ev->type = ISCSI_KEVENT_CONN_ERROR;
2424 ev->r.connerror.error = error;
2425 ev->r.connerror.cid = conn->cid;
2426 ev->r.connerror.sid = iscsi_conn_get_sid(conn);
2428 iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_ATOMIC);
2430 iscsi_cls_conn_printk(KERN_INFO, conn, "detected conn error (%d)\n",
2433 EXPORT_SYMBOL_GPL(iscsi_conn_error_event);
2435 void iscsi_conn_login_event(struct iscsi_cls_conn *conn,
2436 enum iscsi_conn_state state)
2438 struct nlmsghdr *nlh;
2439 struct sk_buff *skb;
2440 struct iscsi_uevent *ev;
2441 struct iscsi_internal *priv;
2442 int len = nlmsg_total_size(sizeof(*ev));
2444 priv = iscsi_if_transport_lookup(conn->transport);
2448 skb = alloc_skb(len, GFP_ATOMIC);
2450 iscsi_cls_conn_printk(KERN_ERR, conn, "gracefully ignored "
2451 "conn login (%d)\n", state);
2455 nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0);
2456 ev = nlmsg_data(nlh);
2457 ev->transport_handle = iscsi_handle(conn->transport);
2458 ev->type = ISCSI_KEVENT_CONN_LOGIN_STATE;
2459 ev->r.conn_login.state = state;
2460 ev->r.conn_login.cid = conn->cid;
2461 ev->r.conn_login.sid = iscsi_conn_get_sid(conn);
2462 iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_ATOMIC);
2464 iscsi_cls_conn_printk(KERN_INFO, conn, "detected conn login (%d)\n",
2467 EXPORT_SYMBOL_GPL(iscsi_conn_login_event);
2469 void iscsi_post_host_event(uint32_t host_no, struct iscsi_transport *transport,
2470 enum iscsi_host_event_code code, uint32_t data_size,
2473 struct nlmsghdr *nlh;
2474 struct sk_buff *skb;
2475 struct iscsi_uevent *ev;
2476 int len = nlmsg_total_size(sizeof(*ev) + data_size);
2478 skb = alloc_skb(len, GFP_NOIO);
2480 printk(KERN_ERR "gracefully ignored host event (%d):%d OOM\n",
2485 nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0);
2486 ev = nlmsg_data(nlh);
2487 ev->transport_handle = iscsi_handle(transport);
2488 ev->type = ISCSI_KEVENT_HOST_EVENT;
2489 ev->r.host_event.host_no = host_no;
2490 ev->r.host_event.code = code;
2491 ev->r.host_event.data_size = data_size;
2494 memcpy((char *)ev + sizeof(*ev), data, data_size);
2496 iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_NOIO);
2498 EXPORT_SYMBOL_GPL(iscsi_post_host_event);
2500 void iscsi_ping_comp_event(uint32_t host_no, struct iscsi_transport *transport,
2501 uint32_t status, uint32_t pid, uint32_t data_size,
2504 struct nlmsghdr *nlh;
2505 struct sk_buff *skb;
2506 struct iscsi_uevent *ev;
2507 int len = nlmsg_total_size(sizeof(*ev) + data_size);
2509 skb = alloc_skb(len, GFP_NOIO);
2511 printk(KERN_ERR "gracefully ignored ping comp: OOM\n");
2515 nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0);
2516 ev = nlmsg_data(nlh);
2517 ev->transport_handle = iscsi_handle(transport);
2518 ev->type = ISCSI_KEVENT_PING_COMP;
2519 ev->r.ping_comp.host_no = host_no;
2520 ev->r.ping_comp.status = status;
2521 ev->r.ping_comp.pid = pid;
2522 ev->r.ping_comp.data_size = data_size;
2523 memcpy((char *)ev + sizeof(*ev), data, data_size);
2525 iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_NOIO);
2527 EXPORT_SYMBOL_GPL(iscsi_ping_comp_event);
2530 iscsi_if_send_reply(u32 portid, int type, void *payload, int size)
2532 struct sk_buff *skb;
2533 struct nlmsghdr *nlh;
2534 int len = nlmsg_total_size(size);
2536 skb = alloc_skb(len, GFP_ATOMIC);
2538 printk(KERN_ERR "Could not allocate skb to send reply.\n");
2542 nlh = __nlmsg_put(skb, 0, 0, type, (len - sizeof(*nlh)), 0);
2543 memcpy(nlmsg_data(nlh), payload, size);
2544 return iscsi_unicast_skb(skb, portid);
2548 iscsi_if_get_stats(struct iscsi_transport *transport, struct nlmsghdr *nlh)
2550 struct iscsi_uevent *ev = nlmsg_data(nlh);
2551 struct iscsi_stats *stats;
2552 struct sk_buff *skbstat;
2553 struct iscsi_cls_conn *conn;
2554 struct nlmsghdr *nlhstat;
2555 struct iscsi_uevent *evstat;
2556 struct iscsi_internal *priv;
2557 int len = nlmsg_total_size(sizeof(*ev) +
2558 sizeof(struct iscsi_stats) +
2559 sizeof(struct iscsi_stats_custom) *
2560 ISCSI_STATS_CUSTOM_MAX);
2563 priv = iscsi_if_transport_lookup(transport);
2567 conn = iscsi_conn_lookup(ev->u.get_stats.sid, ev->u.get_stats.cid);
2574 skbstat = alloc_skb(len, GFP_ATOMIC);
2576 iscsi_cls_conn_printk(KERN_ERR, conn, "can not "
2577 "deliver stats: OOM\n");
2581 nlhstat = __nlmsg_put(skbstat, 0, 0, 0,
2582 (len - sizeof(*nlhstat)), 0);
2583 evstat = nlmsg_data(nlhstat);
2584 memset(evstat, 0, sizeof(*evstat));
2585 evstat->transport_handle = iscsi_handle(conn->transport);
2586 evstat->type = nlh->nlmsg_type;
2587 evstat->u.get_stats.cid =
2588 ev->u.get_stats.cid;
2589 evstat->u.get_stats.sid =
2590 ev->u.get_stats.sid;
2591 stats = (struct iscsi_stats *)
2592 ((char*)evstat + sizeof(*evstat));
2593 memset(stats, 0, sizeof(*stats));
2595 transport->get_stats(conn, stats);
2596 actual_size = nlmsg_total_size(sizeof(struct iscsi_uevent) +
2597 sizeof(struct iscsi_stats) +
2598 sizeof(struct iscsi_stats_custom) *
2599 stats->custom_length);
2600 actual_size -= sizeof(*nlhstat);
2601 actual_size = nlmsg_msg_size(actual_size);
2602 skb_trim(skbstat, NLMSG_ALIGN(actual_size));
2603 nlhstat->nlmsg_len = actual_size;
2605 err = iscsi_multicast_skb(skbstat, ISCSI_NL_GRP_ISCSID,
2607 } while (err < 0 && err != -ECONNREFUSED);
2613 * iscsi_session_event - send session destr. completion event
2614 * @session: iscsi class session
2615 * @event: type of event
2617 int iscsi_session_event(struct iscsi_cls_session *session,
2618 enum iscsi_uevent_e event)
2620 struct iscsi_internal *priv;
2621 struct Scsi_Host *shost;
2622 struct iscsi_uevent *ev;
2623 struct sk_buff *skb;
2624 struct nlmsghdr *nlh;
2625 int rc, len = nlmsg_total_size(sizeof(*ev));
2627 priv = iscsi_if_transport_lookup(session->transport);
2630 shost = iscsi_session_to_shost(session);
2632 skb = alloc_skb(len, GFP_KERNEL);
2634 iscsi_cls_session_printk(KERN_ERR, session,
2635 "Cannot notify userspace of session "
2636 "event %u\n", event);
2640 nlh = __nlmsg_put(skb, 0, 0, 0, (len - sizeof(*nlh)), 0);
2641 ev = nlmsg_data(nlh);
2642 ev->transport_handle = iscsi_handle(session->transport);
2646 case ISCSI_KEVENT_DESTROY_SESSION:
2647 ev->r.d_session.host_no = shost->host_no;
2648 ev->r.d_session.sid = session->sid;
2650 case ISCSI_KEVENT_CREATE_SESSION:
2651 ev->r.c_session_ret.host_no = shost->host_no;
2652 ev->r.c_session_ret.sid = session->sid;
2654 case ISCSI_KEVENT_UNBIND_SESSION:
2655 ev->r.unbind_session.host_no = shost->host_no;
2656 ev->r.unbind_session.sid = session->sid;
2659 iscsi_cls_session_printk(KERN_ERR, session, "Invalid event "
2666 * this will occur if the daemon is not up, so we just warn
2667 * the user and when the daemon is restarted it will handle it
2669 rc = iscsi_multicast_skb(skb, ISCSI_NL_GRP_ISCSID, GFP_KERNEL);
2671 iscsi_cls_session_printk(KERN_ERR, session,
2672 "Cannot notify userspace of session "
2673 "event %u. Check iscsi daemon\n",
2676 ISCSI_DBG_TRANS_SESSION(session, "Completed handling event %d rc %d\n",
2680 EXPORT_SYMBOL_GPL(iscsi_session_event);
2683 iscsi_if_create_session(struct iscsi_internal *priv, struct iscsi_endpoint *ep,
2684 struct iscsi_uevent *ev, pid_t pid,
2685 uint32_t initial_cmdsn, uint16_t cmds_max,
2686 uint16_t queue_depth)
2688 struct iscsi_transport *transport = priv->iscsi_transport;
2689 struct iscsi_cls_session *session;
2690 struct Scsi_Host *shost;
2692 session = transport->create_session(ep, cmds_max, queue_depth,
2697 session->creator = pid;
2698 shost = iscsi_session_to_shost(session);
2699 ev->r.c_session_ret.host_no = shost->host_no;
2700 ev->r.c_session_ret.sid = session->sid;
2701 ISCSI_DBG_TRANS_SESSION(session,
2702 "Completed creating transport session\n");
2707 iscsi_if_create_conn(struct iscsi_transport *transport, struct iscsi_uevent *ev)
2709 struct iscsi_cls_conn *conn;
2710 struct iscsi_cls_session *session;
2712 session = iscsi_session_lookup(ev->u.c_conn.sid);
2714 printk(KERN_ERR "iscsi: invalid session %d.\n",
2719 conn = transport->create_conn(session, ev->u.c_conn.cid);
2721 iscsi_cls_session_printk(KERN_ERR, session,
2722 "couldn't create a new connection.");
2726 ev->r.c_conn_ret.sid = session->sid;
2727 ev->r.c_conn_ret.cid = conn->cid;
2729 ISCSI_DBG_TRANS_CONN(conn, "Completed creating transport conn\n");
2734 iscsi_if_destroy_conn(struct iscsi_transport *transport, struct iscsi_uevent *ev)
2736 struct iscsi_cls_conn *conn;
2738 conn = iscsi_conn_lookup(ev->u.d_conn.sid, ev->u.d_conn.cid);
2742 ISCSI_DBG_TRANS_CONN(conn, "Destroying transport conn\n");
2743 if (transport->destroy_conn)
2744 transport->destroy_conn(conn);
2750 iscsi_set_param(struct iscsi_transport *transport, struct iscsi_uevent *ev)
2752 char *data = (char*)ev + sizeof(*ev);
2753 struct iscsi_cls_conn *conn;
2754 struct iscsi_cls_session *session;
2755 int err = 0, value = 0;
2757 session = iscsi_session_lookup(ev->u.set_param.sid);
2758 conn = iscsi_conn_lookup(ev->u.set_param.sid, ev->u.set_param.cid);
2759 if (!conn || !session)
2762 switch (ev->u.set_param.param) {
2763 case ISCSI_PARAM_SESS_RECOVERY_TMO:
2764 sscanf(data, "%d", &value);
2765 if (!session->recovery_tmo_sysfs_override)
2766 session->recovery_tmo = value;
2769 err = transport->set_param(conn, ev->u.set_param.param,
2770 data, ev->u.set_param.len);
2776 static int iscsi_if_ep_connect(struct iscsi_transport *transport,
2777 struct iscsi_uevent *ev, int msg_type)
2779 struct iscsi_endpoint *ep;
2780 struct sockaddr *dst_addr;
2781 struct Scsi_Host *shost = NULL;
2782 int non_blocking, err = 0;
2784 if (!transport->ep_connect)
2787 if (msg_type == ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST) {
2788 shost = scsi_host_lookup(ev->u.ep_connect_through_host.host_no);
2790 printk(KERN_ERR "ep connect failed. Could not find "
2792 ev->u.ep_connect_through_host.host_no);
2795 non_blocking = ev->u.ep_connect_through_host.non_blocking;
2797 non_blocking = ev->u.ep_connect.non_blocking;
2799 dst_addr = (struct sockaddr *)((char*)ev + sizeof(*ev));
2800 ep = transport->ep_connect(shost, dst_addr, non_blocking);
2806 ev->r.ep_connect_ret.handle = ep->id;
2809 scsi_host_put(shost);
2813 static int iscsi_if_ep_disconnect(struct iscsi_transport *transport,
2816 struct iscsi_cls_conn *conn;
2817 struct iscsi_endpoint *ep;
2819 if (!transport->ep_disconnect)
2822 ep = iscsi_lookup_endpoint(ep_handle);
2827 mutex_lock(&conn->ep_mutex);
2829 mutex_unlock(&conn->ep_mutex);
2832 transport->ep_disconnect(ep);
2837 iscsi_if_transport_ep(struct iscsi_transport *transport,
2838 struct iscsi_uevent *ev, int msg_type)
2840 struct iscsi_endpoint *ep;
2844 case ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST:
2845 case ISCSI_UEVENT_TRANSPORT_EP_CONNECT:
2846 rc = iscsi_if_ep_connect(transport, ev, msg_type);
2848 case ISCSI_UEVENT_TRANSPORT_EP_POLL:
2849 if (!transport->ep_poll)
2852 ep = iscsi_lookup_endpoint(ev->u.ep_poll.ep_handle);
2856 ev->r.retcode = transport->ep_poll(ep,
2857 ev->u.ep_poll.timeout_ms);
2859 case ISCSI_UEVENT_TRANSPORT_EP_DISCONNECT:
2860 rc = iscsi_if_ep_disconnect(transport,
2861 ev->u.ep_disconnect.ep_handle);
2868 iscsi_tgt_dscvr(struct iscsi_transport *transport,
2869 struct iscsi_uevent *ev)
2871 struct Scsi_Host *shost;
2872 struct sockaddr *dst_addr;
2875 if (!transport->tgt_dscvr)
2878 shost = scsi_host_lookup(ev->u.tgt_dscvr.host_no);
2880 printk(KERN_ERR "target discovery could not find host no %u\n",
2881 ev->u.tgt_dscvr.host_no);
2886 dst_addr = (struct sockaddr *)((char*)ev + sizeof(*ev));
2887 err = transport->tgt_dscvr(shost, ev->u.tgt_dscvr.type,
2888 ev->u.tgt_dscvr.enable, dst_addr);
2889 scsi_host_put(shost);
2894 iscsi_set_host_param(struct iscsi_transport *transport,
2895 struct iscsi_uevent *ev)
2897 char *data = (char*)ev + sizeof(*ev);
2898 struct Scsi_Host *shost;
2901 if (!transport->set_host_param)
2904 shost = scsi_host_lookup(ev->u.set_host_param.host_no);
2906 printk(KERN_ERR "set_host_param could not find host no %u\n",
2907 ev->u.set_host_param.host_no);
2911 err = transport->set_host_param(shost, ev->u.set_host_param.param,
2912 data, ev->u.set_host_param.len);
2913 scsi_host_put(shost);
2918 iscsi_set_path(struct iscsi_transport *transport, struct iscsi_uevent *ev)
2920 struct Scsi_Host *shost;
2921 struct iscsi_path *params;
2924 if (!transport->set_path)
2927 shost = scsi_host_lookup(ev->u.set_path.host_no);
2929 printk(KERN_ERR "set path could not find host no %u\n",
2930 ev->u.set_path.host_no);
2934 params = (struct iscsi_path *)((char *)ev + sizeof(*ev));
2935 err = transport->set_path(shost, params);
2937 scsi_host_put(shost);
2942 iscsi_set_iface_params(struct iscsi_transport *transport,
2943 struct iscsi_uevent *ev, uint32_t len)
2945 char *data = (char *)ev + sizeof(*ev);
2946 struct Scsi_Host *shost;
2949 if (!transport->set_iface_param)
2952 shost = scsi_host_lookup(ev->u.set_iface_params.host_no);
2954 printk(KERN_ERR "set_iface_params could not find host no %u\n",
2955 ev->u.set_iface_params.host_no);
2959 err = transport->set_iface_param(shost, data, len);
2960 scsi_host_put(shost);
2965 iscsi_send_ping(struct iscsi_transport *transport, struct iscsi_uevent *ev)
2967 struct Scsi_Host *shost;
2968 struct sockaddr *dst_addr;
2971 if (!transport->send_ping)
2974 shost = scsi_host_lookup(ev->u.iscsi_ping.host_no);
2976 printk(KERN_ERR "iscsi_ping could not find host no %u\n",
2977 ev->u.iscsi_ping.host_no);
2981 dst_addr = (struct sockaddr *)((char *)ev + sizeof(*ev));
2982 err = transport->send_ping(shost, ev->u.iscsi_ping.iface_num,
2983 ev->u.iscsi_ping.iface_type,
2984 ev->u.iscsi_ping.payload_size,
2985 ev->u.iscsi_ping.pid,
2987 scsi_host_put(shost);
2992 iscsi_get_chap(struct iscsi_transport *transport, struct nlmsghdr *nlh)
2994 struct iscsi_uevent *ev = nlmsg_data(nlh);
2995 struct Scsi_Host *shost = NULL;
2996 struct iscsi_chap_rec *chap_rec;
2997 struct iscsi_internal *priv;
2998 struct sk_buff *skbchap;
2999 struct nlmsghdr *nlhchap;
3000 struct iscsi_uevent *evchap;
3001 uint32_t chap_buf_size;
3005 if (!transport->get_chap)
3008 priv = iscsi_if_transport_lookup(transport);
3012 chap_buf_size = (ev->u.get_chap.num_entries * sizeof(*chap_rec));
3013 len = nlmsg_total_size(sizeof(*ev) + chap_buf_size);
3015 shost = scsi_host_lookup(ev->u.get_chap.host_no);
3017 printk(KERN_ERR "%s: failed. Could not find host no %u\n",
3018 __func__, ev->u.get_chap.host_no);
3025 skbchap = alloc_skb(len, GFP_KERNEL);
3027 printk(KERN_ERR "can not deliver chap: OOM\n");
3032 nlhchap = __nlmsg_put(skbchap, 0, 0, 0,
3033 (len - sizeof(*nlhchap)), 0);
3034 evchap = nlmsg_data(nlhchap);
3035 memset(evchap, 0, sizeof(*evchap));
3036 evchap->transport_handle = iscsi_handle(transport);
3037 evchap->type = nlh->nlmsg_type;
3038 evchap->u.get_chap.host_no = ev->u.get_chap.host_no;
3039 evchap->u.get_chap.chap_tbl_idx = ev->u.get_chap.chap_tbl_idx;
3040 evchap->u.get_chap.num_entries = ev->u.get_chap.num_entries;
3041 buf = (char *)evchap + sizeof(*evchap);
3042 memset(buf, 0, chap_buf_size);
3044 err = transport->get_chap(shost, ev->u.get_chap.chap_tbl_idx,
3045 &evchap->u.get_chap.num_entries, buf);
3047 actual_size = nlmsg_total_size(sizeof(*ev) + chap_buf_size);
3048 skb_trim(skbchap, NLMSG_ALIGN(actual_size));
3049 nlhchap->nlmsg_len = actual_size;
3051 err = iscsi_multicast_skb(skbchap, ISCSI_NL_GRP_ISCSID,
3053 } while (err < 0 && err != -ECONNREFUSED);
3056 scsi_host_put(shost);
3060 static int iscsi_set_chap(struct iscsi_transport *transport,
3061 struct iscsi_uevent *ev, uint32_t len)
3063 char *data = (char *)ev + sizeof(*ev);
3064 struct Scsi_Host *shost;
3067 if (!transport->set_chap)
3070 shost = scsi_host_lookup(ev->u.set_path.host_no);
3072 pr_err("%s could not find host no %u\n",
3073 __func__, ev->u.set_path.host_no);
3077 err = transport->set_chap(shost, data, len);
3078 scsi_host_put(shost);
3082 static int iscsi_delete_chap(struct iscsi_transport *transport,
3083 struct iscsi_uevent *ev)
3085 struct Scsi_Host *shost;
3088 if (!transport->delete_chap)
3091 shost = scsi_host_lookup(ev->u.delete_chap.host_no);
3093 printk(KERN_ERR "%s could not find host no %u\n",
3094 __func__, ev->u.delete_chap.host_no);
3098 err = transport->delete_chap(shost, ev->u.delete_chap.chap_tbl_idx);
3099 scsi_host_put(shost);
3103 static const struct {
3104 enum iscsi_discovery_parent_type value;
3106 } iscsi_discovery_parent_names[] = {
3107 {ISCSI_DISC_PARENT_UNKNOWN, "Unknown" },
3108 {ISCSI_DISC_PARENT_SENDTGT, "Sendtarget" },
3109 {ISCSI_DISC_PARENT_ISNS, "isns" },
3112 char *iscsi_get_discovery_parent_name(int parent_type)
3115 char *state = "Unknown!";
3117 for (i = 0; i < ARRAY_SIZE(iscsi_discovery_parent_names); i++) {
3118 if (iscsi_discovery_parent_names[i].value & parent_type) {
3119 state = iscsi_discovery_parent_names[i].name;
3125 EXPORT_SYMBOL_GPL(iscsi_get_discovery_parent_name);
3127 static int iscsi_set_flashnode_param(struct iscsi_transport *transport,
3128 struct iscsi_uevent *ev, uint32_t len)
3130 char *data = (char *)ev + sizeof(*ev);
3131 struct Scsi_Host *shost;
3132 struct iscsi_bus_flash_session *fnode_sess;
3133 struct iscsi_bus_flash_conn *fnode_conn;
3138 if (!transport->set_flashnode_param) {
3140 goto exit_set_fnode;
3143 shost = scsi_host_lookup(ev->u.set_flashnode.host_no);
3145 pr_err("%s could not find host no %u\n",
3146 __func__, ev->u.set_flashnode.host_no);
3151 idx = ev->u.set_flashnode.flashnode_idx;
3152 fnode_sess = iscsi_get_flashnode_by_index(shost, idx);
3154 pr_err("%s could not find flashnode %u for host no %u\n",
3155 __func__, idx, ev->u.set_flashnode.host_no);
3160 dev = iscsi_find_flashnode_conn(fnode_sess);
3166 fnode_conn = iscsi_dev_to_flash_conn(dev);
3167 err = transport->set_flashnode_param(fnode_sess, fnode_conn, data, len);
3171 put_device(&fnode_sess->dev);
3174 scsi_host_put(shost);
3180 static int iscsi_new_flashnode(struct iscsi_transport *transport,
3181 struct iscsi_uevent *ev, uint32_t len)
3183 char *data = (char *)ev + sizeof(*ev);
3184 struct Scsi_Host *shost;
3188 if (!transport->new_flashnode) {
3190 goto exit_new_fnode;
3193 shost = scsi_host_lookup(ev->u.new_flashnode.host_no);
3195 pr_err("%s could not find host no %u\n",
3196 __func__, ev->u.new_flashnode.host_no);
3201 index = transport->new_flashnode(shost, data, len);
3204 ev->r.new_flashnode_ret.flashnode_idx = index;
3209 scsi_host_put(shost);
3215 static int iscsi_del_flashnode(struct iscsi_transport *transport,
3216 struct iscsi_uevent *ev)
3218 struct Scsi_Host *shost;
3219 struct iscsi_bus_flash_session *fnode_sess;
3223 if (!transport->del_flashnode) {
3225 goto exit_del_fnode;
3228 shost = scsi_host_lookup(ev->u.del_flashnode.host_no);
3230 pr_err("%s could not find host no %u\n",
3231 __func__, ev->u.del_flashnode.host_no);
3236 idx = ev->u.del_flashnode.flashnode_idx;
3237 fnode_sess = iscsi_get_flashnode_by_index(shost, idx);
3239 pr_err("%s could not find flashnode %u for host no %u\n",
3240 __func__, idx, ev->u.del_flashnode.host_no);
3245 err = transport->del_flashnode(fnode_sess);
3246 put_device(&fnode_sess->dev);
3249 scsi_host_put(shost);
3255 static int iscsi_login_flashnode(struct iscsi_transport *transport,
3256 struct iscsi_uevent *ev)
3258 struct Scsi_Host *shost;
3259 struct iscsi_bus_flash_session *fnode_sess;
3260 struct iscsi_bus_flash_conn *fnode_conn;
3265 if (!transport->login_flashnode) {
3267 goto exit_login_fnode;
3270 shost = scsi_host_lookup(ev->u.login_flashnode.host_no);
3272 pr_err("%s could not find host no %u\n",
3273 __func__, ev->u.login_flashnode.host_no);
3278 idx = ev->u.login_flashnode.flashnode_idx;
3279 fnode_sess = iscsi_get_flashnode_by_index(shost, idx);
3281 pr_err("%s could not find flashnode %u for host no %u\n",
3282 __func__, idx, ev->u.login_flashnode.host_no);
3287 dev = iscsi_find_flashnode_conn(fnode_sess);
3293 fnode_conn = iscsi_dev_to_flash_conn(dev);
3294 err = transport->login_flashnode(fnode_sess, fnode_conn);
3298 put_device(&fnode_sess->dev);
3301 scsi_host_put(shost);
3307 static int iscsi_logout_flashnode(struct iscsi_transport *transport,
3308 struct iscsi_uevent *ev)
3310 struct Scsi_Host *shost;
3311 struct iscsi_bus_flash_session *fnode_sess;
3312 struct iscsi_bus_flash_conn *fnode_conn;
3317 if (!transport->logout_flashnode) {
3319 goto exit_logout_fnode;
3322 shost = scsi_host_lookup(ev->u.logout_flashnode.host_no);
3324 pr_err("%s could not find host no %u\n",
3325 __func__, ev->u.logout_flashnode.host_no);
3330 idx = ev->u.logout_flashnode.flashnode_idx;
3331 fnode_sess = iscsi_get_flashnode_by_index(shost, idx);
3333 pr_err("%s could not find flashnode %u for host no %u\n",
3334 __func__, idx, ev->u.logout_flashnode.host_no);
3339 dev = iscsi_find_flashnode_conn(fnode_sess);
3345 fnode_conn = iscsi_dev_to_flash_conn(dev);
3347 err = transport->logout_flashnode(fnode_sess, fnode_conn);
3351 put_device(&fnode_sess->dev);
3354 scsi_host_put(shost);
3360 static int iscsi_logout_flashnode_sid(struct iscsi_transport *transport,
3361 struct iscsi_uevent *ev)
3363 struct Scsi_Host *shost;
3364 struct iscsi_cls_session *session;
3367 if (!transport->logout_flashnode_sid) {
3369 goto exit_logout_sid;
3372 shost = scsi_host_lookup(ev->u.logout_flashnode_sid.host_no);
3374 pr_err("%s could not find host no %u\n",
3375 __func__, ev->u.logout_flashnode.host_no);
3380 session = iscsi_session_lookup(ev->u.logout_flashnode_sid.sid);
3382 pr_err("%s could not find session id %u\n",
3383 __func__, ev->u.logout_flashnode_sid.sid);
3388 err = transport->logout_flashnode_sid(session);
3391 scsi_host_put(shost);
3398 iscsi_get_host_stats(struct iscsi_transport *transport, struct nlmsghdr *nlh)
3400 struct iscsi_uevent *ev = nlmsg_data(nlh);
3401 struct Scsi_Host *shost = NULL;
3402 struct iscsi_internal *priv;
3403 struct sk_buff *skbhost_stats;
3404 struct nlmsghdr *nlhhost_stats;
3405 struct iscsi_uevent *evhost_stats;
3406 int host_stats_size = 0;
3410 if (!transport->get_host_stats)
3413 priv = iscsi_if_transport_lookup(transport);
3417 host_stats_size = sizeof(struct iscsi_offload_host_stats);
3418 len = nlmsg_total_size(sizeof(*ev) + host_stats_size);
3420 shost = scsi_host_lookup(ev->u.get_host_stats.host_no);
3422 pr_err("%s: failed. Could not find host no %u\n",
3423 __func__, ev->u.get_host_stats.host_no);
3430 skbhost_stats = alloc_skb(len, GFP_KERNEL);
3431 if (!skbhost_stats) {
3432 pr_err("cannot deliver host stats: OOM\n");
3434 goto exit_host_stats;
3437 nlhhost_stats = __nlmsg_put(skbhost_stats, 0, 0, 0,
3438 (len - sizeof(*nlhhost_stats)), 0);
3439 evhost_stats = nlmsg_data(nlhhost_stats);
3440 memset(evhost_stats, 0, sizeof(*evhost_stats));
3441 evhost_stats->transport_handle = iscsi_handle(transport);
3442 evhost_stats->type = nlh->nlmsg_type;
3443 evhost_stats->u.get_host_stats.host_no =
3444 ev->u.get_host_stats.host_no;
3445 buf = (char *)evhost_stats + sizeof(*evhost_stats);
3446 memset(buf, 0, host_stats_size);
3448 err = transport->get_host_stats(shost, buf, host_stats_size);
3450 kfree_skb(skbhost_stats);
3451 goto exit_host_stats;
3454 actual_size = nlmsg_total_size(sizeof(*ev) + host_stats_size);
3455 skb_trim(skbhost_stats, NLMSG_ALIGN(actual_size));
3456 nlhhost_stats->nlmsg_len = actual_size;
3458 err = iscsi_multicast_skb(skbhost_stats, ISCSI_NL_GRP_ISCSID,
3460 } while (err < 0 && err != -ECONNREFUSED);
3463 scsi_host_put(shost);
3469 iscsi_if_recv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, uint32_t *group)
3473 struct iscsi_uevent *ev = nlmsg_data(nlh);
3474 struct iscsi_transport *transport = NULL;
3475 struct iscsi_internal *priv;
3476 struct iscsi_cls_session *session;
3477 struct iscsi_cls_conn *conn;
3478 struct iscsi_endpoint *ep = NULL;
3480 if (nlh->nlmsg_type == ISCSI_UEVENT_PATH_UPDATE)
3481 *group = ISCSI_NL_GRP_UIP;
3483 *group = ISCSI_NL_GRP_ISCSID;
3485 priv = iscsi_if_transport_lookup(iscsi_ptr(ev->transport_handle));
3488 transport = priv->iscsi_transport;
3490 if (!try_module_get(transport->owner))
3493 portid = NETLINK_CB(skb).portid;
3495 switch (nlh->nlmsg_type) {
3496 case ISCSI_UEVENT_CREATE_SESSION:
3497 err = iscsi_if_create_session(priv, ep, ev,
3499 ev->u.c_session.initial_cmdsn,
3500 ev->u.c_session.cmds_max,
3501 ev->u.c_session.queue_depth);
3503 case ISCSI_UEVENT_CREATE_BOUND_SESSION:
3504 ep = iscsi_lookup_endpoint(ev->u.c_bound_session.ep_handle);
3510 err = iscsi_if_create_session(priv, ep, ev,
3512 ev->u.c_bound_session.initial_cmdsn,
3513 ev->u.c_bound_session.cmds_max,
3514 ev->u.c_bound_session.queue_depth);
3516 case ISCSI_UEVENT_DESTROY_SESSION:
3517 session = iscsi_session_lookup(ev->u.d_session.sid);
3519 transport->destroy_session(session);
3523 case ISCSI_UEVENT_UNBIND_SESSION:
3524 session = iscsi_session_lookup(ev->u.d_session.sid);
3526 scsi_queue_work(iscsi_session_to_shost(session),
3527 &session->unbind_work);
3531 case ISCSI_UEVENT_CREATE_CONN:
3532 err = iscsi_if_create_conn(transport, ev);
3534 case ISCSI_UEVENT_DESTROY_CONN:
3535 err = iscsi_if_destroy_conn(transport, ev);
3537 case ISCSI_UEVENT_BIND_CONN:
3538 session = iscsi_session_lookup(ev->u.b_conn.sid);
3539 conn = iscsi_conn_lookup(ev->u.b_conn.sid, ev->u.b_conn.cid);
3541 if (conn && conn->ep)
3542 iscsi_if_ep_disconnect(transport, conn->ep->id);
3544 if (!session || !conn) {
3549 ev->r.retcode = transport->bind_conn(session, conn,
3550 ev->u.b_conn.transport_eph,
3551 ev->u.b_conn.is_leading);
3552 if (ev->r.retcode || !transport->ep_connect)
3555 ep = iscsi_lookup_endpoint(ev->u.b_conn.transport_eph);
3559 mutex_lock(&conn->ep_mutex);
3561 mutex_unlock(&conn->ep_mutex);
3563 iscsi_cls_conn_printk(KERN_ERR, conn,
3564 "Could not set ep conn "
3567 case ISCSI_UEVENT_SET_PARAM:
3568 err = iscsi_set_param(transport, ev);
3570 case ISCSI_UEVENT_START_CONN:
3571 conn = iscsi_conn_lookup(ev->u.start_conn.sid, ev->u.start_conn.cid);
3573 ev->r.retcode = transport->start_conn(conn);
3577 case ISCSI_UEVENT_STOP_CONN:
3578 conn = iscsi_conn_lookup(ev->u.stop_conn.sid, ev->u.stop_conn.cid);
3580 transport->stop_conn(conn, ev->u.stop_conn.flag);
3584 case ISCSI_UEVENT_SEND_PDU:
3585 conn = iscsi_conn_lookup(ev->u.send_pdu.sid, ev->u.send_pdu.cid);
3587 ev->r.retcode = transport->send_pdu(conn,
3588 (struct iscsi_hdr*)((char*)ev + sizeof(*ev)),
3589 (char*)ev + sizeof(*ev) + ev->u.send_pdu.hdr_size,
3590 ev->u.send_pdu.data_size);
3594 case ISCSI_UEVENT_GET_STATS:
3595 err = iscsi_if_get_stats(transport, nlh);
3597 case ISCSI_UEVENT_TRANSPORT_EP_CONNECT:
3598 case ISCSI_UEVENT_TRANSPORT_EP_POLL:
3599 case ISCSI_UEVENT_TRANSPORT_EP_DISCONNECT:
3600 case ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST:
3601 err = iscsi_if_transport_ep(transport, ev, nlh->nlmsg_type);
3603 case ISCSI_UEVENT_TGT_DSCVR:
3604 err = iscsi_tgt_dscvr(transport, ev);
3606 case ISCSI_UEVENT_SET_HOST_PARAM:
3607 err = iscsi_set_host_param(transport, ev);
3609 case ISCSI_UEVENT_PATH_UPDATE:
3610 err = iscsi_set_path(transport, ev);
3612 case ISCSI_UEVENT_SET_IFACE_PARAMS:
3613 err = iscsi_set_iface_params(transport, ev,
3614 nlmsg_attrlen(nlh, sizeof(*ev)));
3616 case ISCSI_UEVENT_PING:
3617 err = iscsi_send_ping(transport, ev);
3619 case ISCSI_UEVENT_GET_CHAP:
3620 err = iscsi_get_chap(transport, nlh);
3622 case ISCSI_UEVENT_DELETE_CHAP:
3623 err = iscsi_delete_chap(transport, ev);
3625 case ISCSI_UEVENT_SET_FLASHNODE_PARAMS:
3626 err = iscsi_set_flashnode_param(transport, ev,
3630 case ISCSI_UEVENT_NEW_FLASHNODE:
3631 err = iscsi_new_flashnode(transport, ev,
3632 nlmsg_attrlen(nlh, sizeof(*ev)));
3634 case ISCSI_UEVENT_DEL_FLASHNODE:
3635 err = iscsi_del_flashnode(transport, ev);
3637 case ISCSI_UEVENT_LOGIN_FLASHNODE:
3638 err = iscsi_login_flashnode(transport, ev);
3640 case ISCSI_UEVENT_LOGOUT_FLASHNODE:
3641 err = iscsi_logout_flashnode(transport, ev);
3643 case ISCSI_UEVENT_LOGOUT_FLASHNODE_SID:
3644 err = iscsi_logout_flashnode_sid(transport, ev);
3646 case ISCSI_UEVENT_SET_CHAP:
3647 err = iscsi_set_chap(transport, ev,
3648 nlmsg_attrlen(nlh, sizeof(*ev)));
3650 case ISCSI_UEVENT_GET_HOST_STATS:
3651 err = iscsi_get_host_stats(transport, nlh);
3658 module_put(transport->owner);
3663 * Get message from skb. Each message is processed by iscsi_if_recv_msg.
3664 * Malformed skbs with wrong lengths or invalid creds are not processed.
3667 iscsi_if_rx(struct sk_buff *skb)
3669 u32 portid = NETLINK_CB(skb).portid;
3671 mutex_lock(&rx_queue_mutex);
3672 while (skb->len >= NLMSG_HDRLEN) {
3675 struct nlmsghdr *nlh;
3676 struct iscsi_uevent *ev;
3679 nlh = nlmsg_hdr(skb);
3680 if (nlh->nlmsg_len < sizeof(*nlh) + sizeof(*ev) ||
3681 skb->len < nlh->nlmsg_len) {
3685 ev = nlmsg_data(nlh);
3686 rlen = NLMSG_ALIGN(nlh->nlmsg_len);
3687 if (rlen > skb->len)
3690 err = iscsi_if_recv_msg(skb, nlh, &group);
3692 ev->type = ISCSI_KEVENT_IF_ERROR;
3697 * special case for GET_STATS:
3698 * on success - sending reply and stats from
3699 * inside of if_recv_msg(),
3700 * on error - fall through.
3702 if (ev->type == ISCSI_UEVENT_GET_STATS && !err)
3704 if (ev->type == ISCSI_UEVENT_GET_CHAP && !err)
3706 err = iscsi_if_send_reply(portid, nlh->nlmsg_type,
3708 } while (err < 0 && err != -ECONNREFUSED && err != -ESRCH);
3709 skb_pull(skb, rlen);
3711 mutex_unlock(&rx_queue_mutex);
3714 #define ISCSI_CLASS_ATTR(_prefix,_name,_mode,_show,_store) \
3715 struct device_attribute dev_attr_##_prefix##_##_name = \
3716 __ATTR(_name,_mode,_show,_store)
3719 * iSCSI connection attrs
3721 #define iscsi_conn_attr_show(param) \
3723 show_conn_param_##param(struct device *dev, \
3724 struct device_attribute *attr, char *buf) \
3726 struct iscsi_cls_conn *conn = iscsi_dev_to_conn(dev->parent); \
3727 struct iscsi_transport *t = conn->transport; \
3728 return t->get_conn_param(conn, param, buf); \
3731 #define iscsi_conn_attr(field, param) \
3732 iscsi_conn_attr_show(param) \
3733 static ISCSI_CLASS_ATTR(conn, field, S_IRUGO, show_conn_param_##param, \
3736 iscsi_conn_attr(max_recv_dlength, ISCSI_PARAM_MAX_RECV_DLENGTH);
3737 iscsi_conn_attr(max_xmit_dlength, ISCSI_PARAM_MAX_XMIT_DLENGTH);
3738 iscsi_conn_attr(header_digest, ISCSI_PARAM_HDRDGST_EN);
3739 iscsi_conn_attr(data_digest, ISCSI_PARAM_DATADGST_EN);
3740 iscsi_conn_attr(ifmarker, ISCSI_PARAM_IFMARKER_EN);
3741 iscsi_conn_attr(ofmarker, ISCSI_PARAM_OFMARKER_EN);
3742 iscsi_conn_attr(persistent_port, ISCSI_PARAM_PERSISTENT_PORT);
3743 iscsi_conn_attr(exp_statsn, ISCSI_PARAM_EXP_STATSN);
3744 iscsi_conn_attr(persistent_address, ISCSI_PARAM_PERSISTENT_ADDRESS);
3745 iscsi_conn_attr(ping_tmo, ISCSI_PARAM_PING_TMO);
3746 iscsi_conn_attr(recv_tmo, ISCSI_PARAM_RECV_TMO);
3747 iscsi_conn_attr(local_port, ISCSI_PARAM_LOCAL_PORT);
3748 iscsi_conn_attr(statsn, ISCSI_PARAM_STATSN);
3749 iscsi_conn_attr(keepalive_tmo, ISCSI_PARAM_KEEPALIVE_TMO);
3750 iscsi_conn_attr(max_segment_size, ISCSI_PARAM_MAX_SEGMENT_SIZE);
3751 iscsi_conn_attr(tcp_timestamp_stat, ISCSI_PARAM_TCP_TIMESTAMP_STAT);
3752 iscsi_conn_attr(tcp_wsf_disable, ISCSI_PARAM_TCP_WSF_DISABLE);
3753 iscsi_conn_attr(tcp_nagle_disable, ISCSI_PARAM_TCP_NAGLE_DISABLE);
3754 iscsi_conn_attr(tcp_timer_scale, ISCSI_PARAM_TCP_TIMER_SCALE);
3755 iscsi_conn_attr(tcp_timestamp_enable, ISCSI_PARAM_TCP_TIMESTAMP_EN);
3756 iscsi_conn_attr(fragment_disable, ISCSI_PARAM_IP_FRAGMENT_DISABLE);
3757 iscsi_conn_attr(ipv4_tos, ISCSI_PARAM_IPV4_TOS);
3758 iscsi_conn_attr(ipv6_traffic_class, ISCSI_PARAM_IPV6_TC);
3759 iscsi_conn_attr(ipv6_flow_label, ISCSI_PARAM_IPV6_FLOW_LABEL);
3760 iscsi_conn_attr(is_fw_assigned_ipv6, ISCSI_PARAM_IS_FW_ASSIGNED_IPV6);
3761 iscsi_conn_attr(tcp_xmit_wsf, ISCSI_PARAM_TCP_XMIT_WSF);
3762 iscsi_conn_attr(tcp_recv_wsf, ISCSI_PARAM_TCP_RECV_WSF);
3763 iscsi_conn_attr(local_ipaddr, ISCSI_PARAM_LOCAL_IPADDR);
3766 #define iscsi_conn_ep_attr_show(param) \
3767 static ssize_t show_conn_ep_param_##param(struct device *dev, \
3768 struct device_attribute *attr,\
3771 struct iscsi_cls_conn *conn = iscsi_dev_to_conn(dev->parent); \
3772 struct iscsi_transport *t = conn->transport; \
3773 struct iscsi_endpoint *ep; \
3777 * Need to make sure ep_disconnect does not free the LLD's \
3778 * interconnect resources while we are trying to read them. \
3780 mutex_lock(&conn->ep_mutex); \
3782 if (!ep && t->ep_connect) { \
3783 mutex_unlock(&conn->ep_mutex); \
3788 rc = t->get_ep_param(ep, param, buf); \
3790 rc = t->get_conn_param(conn, param, buf); \
3791 mutex_unlock(&conn->ep_mutex); \
3795 #define iscsi_conn_ep_attr(field, param) \
3796 iscsi_conn_ep_attr_show(param) \
3797 static ISCSI_CLASS_ATTR(conn, field, S_IRUGO, \
3798 show_conn_ep_param_##param, NULL);
3800 iscsi_conn_ep_attr(address, ISCSI_PARAM_CONN_ADDRESS);
3801 iscsi_conn_ep_attr(port, ISCSI_PARAM_CONN_PORT);
3803 static struct attribute *iscsi_conn_attrs[] = {
3804 &dev_attr_conn_max_recv_dlength.attr,
3805 &dev_attr_conn_max_xmit_dlength.attr,
3806 &dev_attr_conn_header_digest.attr,
3807 &dev_attr_conn_data_digest.attr,
3808 &dev_attr_conn_ifmarker.attr,
3809 &dev_attr_conn_ofmarker.attr,
3810 &dev_attr_conn_address.attr,
3811 &dev_attr_conn_port.attr,
3812 &dev_attr_conn_exp_statsn.attr,
3813 &dev_attr_conn_persistent_address.attr,
3814 &dev_attr_conn_persistent_port.attr,
3815 &dev_attr_conn_ping_tmo.attr,
3816 &dev_attr_conn_recv_tmo.attr,
3817 &dev_attr_conn_local_port.attr,
3818 &dev_attr_conn_statsn.attr,
3819 &dev_attr_conn_keepalive_tmo.attr,
3820 &dev_attr_conn_max_segment_size.attr,
3821 &dev_attr_conn_tcp_timestamp_stat.attr,
3822 &dev_attr_conn_tcp_wsf_disable.attr,
3823 &dev_attr_conn_tcp_nagle_disable.attr,
3824 &dev_attr_conn_tcp_timer_scale.attr,
3825 &dev_attr_conn_tcp_timestamp_enable.attr,
3826 &dev_attr_conn_fragment_disable.attr,
3827 &dev_attr_conn_ipv4_tos.attr,
3828 &dev_attr_conn_ipv6_traffic_class.attr,
3829 &dev_attr_conn_ipv6_flow_label.attr,
3830 &dev_attr_conn_is_fw_assigned_ipv6.attr,
3831 &dev_attr_conn_tcp_xmit_wsf.attr,
3832 &dev_attr_conn_tcp_recv_wsf.attr,
3833 &dev_attr_conn_local_ipaddr.attr,
3837 static umode_t iscsi_conn_attr_is_visible(struct kobject *kobj,
3838 struct attribute *attr, int i)
3840 struct device *cdev = container_of(kobj, struct device, kobj);
3841 struct iscsi_cls_conn *conn = transport_class_to_conn(cdev);
3842 struct iscsi_transport *t = conn->transport;
3845 if (attr == &dev_attr_conn_max_recv_dlength.attr)
3846 param = ISCSI_PARAM_MAX_RECV_DLENGTH;
3847 else if (attr == &dev_attr_conn_max_xmit_dlength.attr)
3848 param = ISCSI_PARAM_MAX_XMIT_DLENGTH;
3849 else if (attr == &dev_attr_conn_header_digest.attr)
3850 param = ISCSI_PARAM_HDRDGST_EN;
3851 else if (attr == &dev_attr_conn_data_digest.attr)
3852 param = ISCSI_PARAM_DATADGST_EN;
3853 else if (attr == &dev_attr_conn_ifmarker.attr)
3854 param = ISCSI_PARAM_IFMARKER_EN;
3855 else if (attr == &dev_attr_conn_ofmarker.attr)
3856 param = ISCSI_PARAM_OFMARKER_EN;
3857 else if (attr == &dev_attr_conn_address.attr)
3858 param = ISCSI_PARAM_CONN_ADDRESS;
3859 else if (attr == &dev_attr_conn_port.attr)
3860 param = ISCSI_PARAM_CONN_PORT;
3861 else if (attr == &dev_attr_conn_exp_statsn.attr)
3862 param = ISCSI_PARAM_EXP_STATSN;
3863 else if (attr == &dev_attr_conn_persistent_address.attr)
3864 param = ISCSI_PARAM_PERSISTENT_ADDRESS;
3865 else if (attr == &dev_attr_conn_persistent_port.attr)
3866 param = ISCSI_PARAM_PERSISTENT_PORT;
3867 else if (attr == &dev_attr_conn_ping_tmo.attr)
3868 param = ISCSI_PARAM_PING_TMO;
3869 else if (attr == &dev_attr_conn_recv_tmo.attr)
3870 param = ISCSI_PARAM_RECV_TMO;
3871 else if (attr == &dev_attr_conn_local_port.attr)
3872 param = ISCSI_PARAM_LOCAL_PORT;
3873 else if (attr == &dev_attr_conn_statsn.attr)
3874 param = ISCSI_PARAM_STATSN;
3875 else if (attr == &dev_attr_conn_keepalive_tmo.attr)
3876 param = ISCSI_PARAM_KEEPALIVE_TMO;
3877 else if (attr == &dev_attr_conn_max_segment_size.attr)
3878 param = ISCSI_PARAM_MAX_SEGMENT_SIZE;
3879 else if (attr == &dev_attr_conn_tcp_timestamp_stat.attr)
3880 param = ISCSI_PARAM_TCP_TIMESTAMP_STAT;
3881 else if (attr == &dev_attr_conn_tcp_wsf_disable.attr)
3882 param = ISCSI_PARAM_TCP_WSF_DISABLE;
3883 else if (attr == &dev_attr_conn_tcp_nagle_disable.attr)
3884 param = ISCSI_PARAM_TCP_NAGLE_DISABLE;
3885 else if (attr == &dev_attr_conn_tcp_timer_scale.attr)
3886 param = ISCSI_PARAM_TCP_TIMER_SCALE;
3887 else if (attr == &dev_attr_conn_tcp_timestamp_enable.attr)
3888 param = ISCSI_PARAM_TCP_TIMESTAMP_EN;
3889 else if (attr == &dev_attr_conn_fragment_disable.attr)
3890 param = ISCSI_PARAM_IP_FRAGMENT_DISABLE;
3891 else if (attr == &dev_attr_conn_ipv4_tos.attr)
3892 param = ISCSI_PARAM_IPV4_TOS;
3893 else if (attr == &dev_attr_conn_ipv6_traffic_class.attr)
3894 param = ISCSI_PARAM_IPV6_TC;
3895 else if (attr == &dev_attr_conn_ipv6_flow_label.attr)
3896 param = ISCSI_PARAM_IPV6_FLOW_LABEL;
3897 else if (attr == &dev_attr_conn_is_fw_assigned_ipv6.attr)
3898 param = ISCSI_PARAM_IS_FW_ASSIGNED_IPV6;
3899 else if (attr == &dev_attr_conn_tcp_xmit_wsf.attr)
3900 param = ISCSI_PARAM_TCP_XMIT_WSF;
3901 else if (attr == &dev_attr_conn_tcp_recv_wsf.attr)
3902 param = ISCSI_PARAM_TCP_RECV_WSF;
3903 else if (attr == &dev_attr_conn_local_ipaddr.attr)
3904 param = ISCSI_PARAM_LOCAL_IPADDR;
3906 WARN_ONCE(1, "Invalid conn attr");
3910 return t->attr_is_visible(ISCSI_PARAM, param);
3913 static struct attribute_group iscsi_conn_group = {
3914 .attrs = iscsi_conn_attrs,
3915 .is_visible = iscsi_conn_attr_is_visible,
3919 * iSCSI session attrs
3921 #define iscsi_session_attr_show(param, perm) \
3923 show_session_param_##param(struct device *dev, \
3924 struct device_attribute *attr, char *buf) \
3926 struct iscsi_cls_session *session = \
3927 iscsi_dev_to_session(dev->parent); \
3928 struct iscsi_transport *t = session->transport; \
3930 if (perm && !capable(CAP_SYS_ADMIN)) \
3932 return t->get_session_param(session, param, buf); \
3935 #define iscsi_session_attr(field, param, perm) \
3936 iscsi_session_attr_show(param, perm) \
3937 static ISCSI_CLASS_ATTR(sess, field, S_IRUGO, show_session_param_##param, \
3939 iscsi_session_attr(targetname, ISCSI_PARAM_TARGET_NAME, 0);
3940 iscsi_session_attr(initial_r2t, ISCSI_PARAM_INITIAL_R2T_EN, 0);
3941 iscsi_session_attr(max_outstanding_r2t, ISCSI_PARAM_MAX_R2T, 0);
3942 iscsi_session_attr(immediate_data, ISCSI_PARAM_IMM_DATA_EN, 0);
3943 iscsi_session_attr(first_burst_len, ISCSI_PARAM_FIRST_BURST, 0);
3944 iscsi_session_attr(max_burst_len, ISCSI_PARAM_MAX_BURST, 0);
3945 iscsi_session_attr(data_pdu_in_order, ISCSI_PARAM_PDU_INORDER_EN, 0);
3946 iscsi_session_attr(data_seq_in_order, ISCSI_PARAM_DATASEQ_INORDER_EN, 0);
3947 iscsi_session_attr(erl, ISCSI_PARAM_ERL, 0);
3948 iscsi_session_attr(tpgt, ISCSI_PARAM_TPGT, 0);
3949 iscsi_session_attr(username, ISCSI_PARAM_USERNAME, 1);
3950 iscsi_session_attr(username_in, ISCSI_PARAM_USERNAME_IN, 1);
3951 iscsi_session_attr(password, ISCSI_PARAM_PASSWORD, 1);
3952 iscsi_session_attr(password_in, ISCSI_PARAM_PASSWORD_IN, 1);
3953 iscsi_session_attr(chap_out_idx, ISCSI_PARAM_CHAP_OUT_IDX, 1);
3954 iscsi_session_attr(chap_in_idx, ISCSI_PARAM_CHAP_IN_IDX, 1);
3955 iscsi_session_attr(fast_abort, ISCSI_PARAM_FAST_ABORT, 0);
3956 iscsi_session_attr(abort_tmo, ISCSI_PARAM_ABORT_TMO, 0);
3957 iscsi_session_attr(lu_reset_tmo, ISCSI_PARAM_LU_RESET_TMO, 0);
3958 iscsi_session_attr(tgt_reset_tmo, ISCSI_PARAM_TGT_RESET_TMO, 0);
3959 iscsi_session_attr(ifacename, ISCSI_PARAM_IFACE_NAME, 0);
3960 iscsi_session_attr(initiatorname, ISCSI_PARAM_INITIATOR_NAME, 0);
3961 iscsi_session_attr(targetalias, ISCSI_PARAM_TARGET_ALIAS, 0);
3962 iscsi_session_attr(boot_root, ISCSI_PARAM_BOOT_ROOT, 0);
3963 iscsi_session_attr(boot_nic, ISCSI_PARAM_BOOT_NIC, 0);
3964 iscsi_session_attr(boot_target, ISCSI_PARAM_BOOT_TARGET, 0);
3965 iscsi_session_attr(auto_snd_tgt_disable, ISCSI_PARAM_AUTO_SND_TGT_DISABLE, 0);
3966 iscsi_session_attr(discovery_session, ISCSI_PARAM_DISCOVERY_SESS, 0);
3967 iscsi_session_attr(portal_type, ISCSI_PARAM_PORTAL_TYPE, 0);
3968 iscsi_session_attr(chap_auth, ISCSI_PARAM_CHAP_AUTH_EN, 0);
3969 iscsi_session_attr(discovery_logout, ISCSI_PARAM_DISCOVERY_LOGOUT_EN, 0);
3970 iscsi_session_attr(bidi_chap, ISCSI_PARAM_BIDI_CHAP_EN, 0);
3971 iscsi_session_attr(discovery_auth_optional,
3972 ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL, 0);
3973 iscsi_session_attr(def_time2wait, ISCSI_PARAM_DEF_TIME2WAIT, 0);
3974 iscsi_session_attr(def_time2retain, ISCSI_PARAM_DEF_TIME2RETAIN, 0);
3975 iscsi_session_attr(isid, ISCSI_PARAM_ISID, 0);
3976 iscsi_session_attr(tsid, ISCSI_PARAM_TSID, 0);
3977 iscsi_session_attr(def_taskmgmt_tmo, ISCSI_PARAM_DEF_TASKMGMT_TMO, 0);
3978 iscsi_session_attr(discovery_parent_idx, ISCSI_PARAM_DISCOVERY_PARENT_IDX, 0);
3979 iscsi_session_attr(discovery_parent_type, ISCSI_PARAM_DISCOVERY_PARENT_TYPE, 0);
3982 show_priv_session_state(struct device *dev, struct device_attribute *attr,
3985 struct iscsi_cls_session *session = iscsi_dev_to_session(dev->parent);
3986 return sprintf(buf, "%s\n", iscsi_session_state_name(session->state));
3988 static ISCSI_CLASS_ATTR(priv_sess, state, S_IRUGO, show_priv_session_state,
3991 show_priv_session_creator(struct device *dev, struct device_attribute *attr,
3994 struct iscsi_cls_session *session = iscsi_dev_to_session(dev->parent);
3995 return sprintf(buf, "%d\n", session->creator);
3997 static ISCSI_CLASS_ATTR(priv_sess, creator, S_IRUGO, show_priv_session_creator,
4000 show_priv_session_target_id(struct device *dev, struct device_attribute *attr,
4003 struct iscsi_cls_session *session = iscsi_dev_to_session(dev->parent);
4004 return sprintf(buf, "%d\n", session->target_id);
4006 static ISCSI_CLASS_ATTR(priv_sess, target_id, S_IRUGO,
4007 show_priv_session_target_id, NULL);
4009 #define iscsi_priv_session_attr_show(field, format) \
4011 show_priv_session_##field(struct device *dev, \
4012 struct device_attribute *attr, char *buf) \
4014 struct iscsi_cls_session *session = \
4015 iscsi_dev_to_session(dev->parent); \
4016 if (session->field == -1) \
4017 return sprintf(buf, "off\n"); \
4018 return sprintf(buf, format"\n", session->field); \
4021 #define iscsi_priv_session_attr_store(field) \
4023 store_priv_session_##field(struct device *dev, \
4024 struct device_attribute *attr, \
4025 const char *buf, size_t count) \
4029 struct iscsi_cls_session *session = \
4030 iscsi_dev_to_session(dev->parent); \
4031 if ((session->state == ISCSI_SESSION_FREE) || \
4032 (session->state == ISCSI_SESSION_FAILED)) \
4034 if (strncmp(buf, "off", 3) == 0) { \
4035 session->field = -1; \
4036 session->field##_sysfs_override = true; \
4038 val = simple_strtoul(buf, &cp, 0); \
4039 if (*cp != '\0' && *cp != '\n') \
4041 session->field = val; \
4042 session->field##_sysfs_override = true; \
4047 #define iscsi_priv_session_rw_attr(field, format) \
4048 iscsi_priv_session_attr_show(field, format) \
4049 iscsi_priv_session_attr_store(field) \
4050 static ISCSI_CLASS_ATTR(priv_sess, field, S_IRUGO | S_IWUSR, \
4051 show_priv_session_##field, \
4052 store_priv_session_##field)
4054 iscsi_priv_session_rw_attr(recovery_tmo, "%d");
4056 static struct attribute *iscsi_session_attrs[] = {
4057 &dev_attr_sess_initial_r2t.attr,
4058 &dev_attr_sess_max_outstanding_r2t.attr,
4059 &dev_attr_sess_immediate_data.attr,
4060 &dev_attr_sess_first_burst_len.attr,
4061 &dev_attr_sess_max_burst_len.attr,
4062 &dev_attr_sess_data_pdu_in_order.attr,
4063 &dev_attr_sess_data_seq_in_order.attr,
4064 &dev_attr_sess_erl.attr,
4065 &dev_attr_sess_targetname.attr,
4066 &dev_attr_sess_tpgt.attr,
4067 &dev_attr_sess_password.attr,
4068 &dev_attr_sess_password_in.attr,
4069 &dev_attr_sess_username.attr,
4070 &dev_attr_sess_username_in.attr,
4071 &dev_attr_sess_fast_abort.attr,
4072 &dev_attr_sess_abort_tmo.attr,
4073 &dev_attr_sess_lu_reset_tmo.attr,
4074 &dev_attr_sess_tgt_reset_tmo.attr,
4075 &dev_attr_sess_ifacename.attr,
4076 &dev_attr_sess_initiatorname.attr,
4077 &dev_attr_sess_targetalias.attr,
4078 &dev_attr_sess_boot_root.attr,
4079 &dev_attr_sess_boot_nic.attr,
4080 &dev_attr_sess_boot_target.attr,
4081 &dev_attr_priv_sess_recovery_tmo.attr,
4082 &dev_attr_priv_sess_state.attr,
4083 &dev_attr_priv_sess_creator.attr,
4084 &dev_attr_sess_chap_out_idx.attr,
4085 &dev_attr_sess_chap_in_idx.attr,
4086 &dev_attr_priv_sess_target_id.attr,
4087 &dev_attr_sess_auto_snd_tgt_disable.attr,
4088 &dev_attr_sess_discovery_session.attr,
4089 &dev_attr_sess_portal_type.attr,
4090 &dev_attr_sess_chap_auth.attr,
4091 &dev_attr_sess_discovery_logout.attr,
4092 &dev_attr_sess_bidi_chap.attr,
4093 &dev_attr_sess_discovery_auth_optional.attr,
4094 &dev_attr_sess_def_time2wait.attr,
4095 &dev_attr_sess_def_time2retain.attr,
4096 &dev_attr_sess_isid.attr,
4097 &dev_attr_sess_tsid.attr,
4098 &dev_attr_sess_def_taskmgmt_tmo.attr,
4099 &dev_attr_sess_discovery_parent_idx.attr,
4100 &dev_attr_sess_discovery_parent_type.attr,
4104 static umode_t iscsi_session_attr_is_visible(struct kobject *kobj,
4105 struct attribute *attr, int i)
4107 struct device *cdev = container_of(kobj, struct device, kobj);
4108 struct iscsi_cls_session *session = transport_class_to_session(cdev);
4109 struct iscsi_transport *t = session->transport;
4112 if (attr == &dev_attr_sess_initial_r2t.attr)
4113 param = ISCSI_PARAM_INITIAL_R2T_EN;
4114 else if (attr == &dev_attr_sess_max_outstanding_r2t.attr)
4115 param = ISCSI_PARAM_MAX_R2T;
4116 else if (attr == &dev_attr_sess_immediate_data.attr)
4117 param = ISCSI_PARAM_IMM_DATA_EN;
4118 else if (attr == &dev_attr_sess_first_burst_len.attr)
4119 param = ISCSI_PARAM_FIRST_BURST;
4120 else if (attr == &dev_attr_sess_max_burst_len.attr)
4121 param = ISCSI_PARAM_MAX_BURST;
4122 else if (attr == &dev_attr_sess_data_pdu_in_order.attr)
4123 param = ISCSI_PARAM_PDU_INORDER_EN;
4124 else if (attr == &dev_attr_sess_data_seq_in_order.attr)
4125 param = ISCSI_PARAM_DATASEQ_INORDER_EN;
4126 else if (attr == &dev_attr_sess_erl.attr)
4127 param = ISCSI_PARAM_ERL;
4128 else if (attr == &dev_attr_sess_targetname.attr)
4129 param = ISCSI_PARAM_TARGET_NAME;
4130 else if (attr == &dev_attr_sess_tpgt.attr)
4131 param = ISCSI_PARAM_TPGT;
4132 else if (attr == &dev_attr_sess_chap_in_idx.attr)
4133 param = ISCSI_PARAM_CHAP_IN_IDX;
4134 else if (attr == &dev_attr_sess_chap_out_idx.attr)
4135 param = ISCSI_PARAM_CHAP_OUT_IDX;
4136 else if (attr == &dev_attr_sess_password.attr)
4137 param = ISCSI_PARAM_USERNAME;
4138 else if (attr == &dev_attr_sess_password_in.attr)
4139 param = ISCSI_PARAM_USERNAME_IN;
4140 else if (attr == &dev_attr_sess_username.attr)
4141 param = ISCSI_PARAM_PASSWORD;
4142 else if (attr == &dev_attr_sess_username_in.attr)
4143 param = ISCSI_PARAM_PASSWORD_IN;
4144 else if (attr == &dev_attr_sess_fast_abort.attr)
4145 param = ISCSI_PARAM_FAST_ABORT;
4146 else if (attr == &dev_attr_sess_abort_tmo.attr)
4147 param = ISCSI_PARAM_ABORT_TMO;
4148 else if (attr == &dev_attr_sess_lu_reset_tmo.attr)
4149 param = ISCSI_PARAM_LU_RESET_TMO;
4150 else if (attr == &dev_attr_sess_tgt_reset_tmo.attr)
4151 param = ISCSI_PARAM_TGT_RESET_TMO;
4152 else if (attr == &dev_attr_sess_ifacename.attr)
4153 param = ISCSI_PARAM_IFACE_NAME;
4154 else if (attr == &dev_attr_sess_initiatorname.attr)
4155 param = ISCSI_PARAM_INITIATOR_NAME;
4156 else if (attr == &dev_attr_sess_targetalias.attr)
4157 param = ISCSI_PARAM_TARGET_ALIAS;
4158 else if (attr == &dev_attr_sess_boot_root.attr)
4159 param = ISCSI_PARAM_BOOT_ROOT;
4160 else if (attr == &dev_attr_sess_boot_nic.attr)
4161 param = ISCSI_PARAM_BOOT_NIC;
4162 else if (attr == &dev_attr_sess_boot_target.attr)
4163 param = ISCSI_PARAM_BOOT_TARGET;
4164 else if (attr == &dev_attr_sess_auto_snd_tgt_disable.attr)
4165 param = ISCSI_PARAM_AUTO_SND_TGT_DISABLE;
4166 else if (attr == &dev_attr_sess_discovery_session.attr)
4167 param = ISCSI_PARAM_DISCOVERY_SESS;
4168 else if (attr == &dev_attr_sess_portal_type.attr)
4169 param = ISCSI_PARAM_PORTAL_TYPE;
4170 else if (attr == &dev_attr_sess_chap_auth.attr)
4171 param = ISCSI_PARAM_CHAP_AUTH_EN;
4172 else if (attr == &dev_attr_sess_discovery_logout.attr)
4173 param = ISCSI_PARAM_DISCOVERY_LOGOUT_EN;
4174 else if (attr == &dev_attr_sess_bidi_chap.attr)
4175 param = ISCSI_PARAM_BIDI_CHAP_EN;
4176 else if (attr == &dev_attr_sess_discovery_auth_optional.attr)
4177 param = ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL;
4178 else if (attr == &dev_attr_sess_def_time2wait.attr)
4179 param = ISCSI_PARAM_DEF_TIME2WAIT;
4180 else if (attr == &dev_attr_sess_def_time2retain.attr)
4181 param = ISCSI_PARAM_DEF_TIME2RETAIN;
4182 else if (attr == &dev_attr_sess_isid.attr)
4183 param = ISCSI_PARAM_ISID;
4184 else if (attr == &dev_attr_sess_tsid.attr)
4185 param = ISCSI_PARAM_TSID;
4186 else if (attr == &dev_attr_sess_def_taskmgmt_tmo.attr)
4187 param = ISCSI_PARAM_DEF_TASKMGMT_TMO;
4188 else if (attr == &dev_attr_sess_discovery_parent_idx.attr)
4189 param = ISCSI_PARAM_DISCOVERY_PARENT_IDX;
4190 else if (attr == &dev_attr_sess_discovery_parent_type.attr)
4191 param = ISCSI_PARAM_DISCOVERY_PARENT_TYPE;
4192 else if (attr == &dev_attr_priv_sess_recovery_tmo.attr)
4193 return S_IRUGO | S_IWUSR;
4194 else if (attr == &dev_attr_priv_sess_state.attr)
4196 else if (attr == &dev_attr_priv_sess_creator.attr)
4198 else if (attr == &dev_attr_priv_sess_target_id.attr)
4201 WARN_ONCE(1, "Invalid session attr");
4205 return t->attr_is_visible(ISCSI_PARAM, param);
4208 static struct attribute_group iscsi_session_group = {
4209 .attrs = iscsi_session_attrs,
4210 .is_visible = iscsi_session_attr_is_visible,
4216 #define iscsi_host_attr_show(param) \
4218 show_host_param_##param(struct device *dev, \
4219 struct device_attribute *attr, char *buf) \
4221 struct Scsi_Host *shost = transport_class_to_shost(dev); \
4222 struct iscsi_internal *priv = to_iscsi_internal(shost->transportt); \
4223 return priv->iscsi_transport->get_host_param(shost, param, buf); \
4226 #define iscsi_host_attr(field, param) \
4227 iscsi_host_attr_show(param) \
4228 static ISCSI_CLASS_ATTR(host, field, S_IRUGO, show_host_param_##param, \
4231 iscsi_host_attr(netdev, ISCSI_HOST_PARAM_NETDEV_NAME);
4232 iscsi_host_attr(hwaddress, ISCSI_HOST_PARAM_HWADDRESS);
4233 iscsi_host_attr(ipaddress, ISCSI_HOST_PARAM_IPADDRESS);
4234 iscsi_host_attr(initiatorname, ISCSI_HOST_PARAM_INITIATOR_NAME);
4235 iscsi_host_attr(port_state, ISCSI_HOST_PARAM_PORT_STATE);
4236 iscsi_host_attr(port_speed, ISCSI_HOST_PARAM_PORT_SPEED);
4238 static struct attribute *iscsi_host_attrs[] = {
4239 &dev_attr_host_netdev.attr,
4240 &dev_attr_host_hwaddress.attr,
4241 &dev_attr_host_ipaddress.attr,
4242 &dev_attr_host_initiatorname.attr,
4243 &dev_attr_host_port_state.attr,
4244 &dev_attr_host_port_speed.attr,
4248 static umode_t iscsi_host_attr_is_visible(struct kobject *kobj,
4249 struct attribute *attr, int i)
4251 struct device *cdev = container_of(kobj, struct device, kobj);
4252 struct Scsi_Host *shost = transport_class_to_shost(cdev);
4253 struct iscsi_internal *priv = to_iscsi_internal(shost->transportt);
4256 if (attr == &dev_attr_host_netdev.attr)
4257 param = ISCSI_HOST_PARAM_NETDEV_NAME;
4258 else if (attr == &dev_attr_host_hwaddress.attr)
4259 param = ISCSI_HOST_PARAM_HWADDRESS;
4260 else if (attr == &dev_attr_host_ipaddress.attr)
4261 param = ISCSI_HOST_PARAM_IPADDRESS;
4262 else if (attr == &dev_attr_host_initiatorname.attr)
4263 param = ISCSI_HOST_PARAM_INITIATOR_NAME;
4264 else if (attr == &dev_attr_host_port_state.attr)
4265 param = ISCSI_HOST_PARAM_PORT_STATE;
4266 else if (attr == &dev_attr_host_port_speed.attr)
4267 param = ISCSI_HOST_PARAM_PORT_SPEED;
4269 WARN_ONCE(1, "Invalid host attr");
4273 return priv->iscsi_transport->attr_is_visible(ISCSI_HOST_PARAM, param);
4276 static struct attribute_group iscsi_host_group = {
4277 .attrs = iscsi_host_attrs,
4278 .is_visible = iscsi_host_attr_is_visible,
4281 /* convert iscsi_port_speed values to ascii string name */
4282 static const struct {
4283 enum iscsi_port_speed value;
4285 } iscsi_port_speed_names[] = {
4286 {ISCSI_PORT_SPEED_UNKNOWN, "Unknown" },
4287 {ISCSI_PORT_SPEED_10MBPS, "10 Mbps" },
4288 {ISCSI_PORT_SPEED_100MBPS, "100 Mbps" },
4289 {ISCSI_PORT_SPEED_1GBPS, "1 Gbps" },
4290 {ISCSI_PORT_SPEED_10GBPS, "10 Gbps" },
4291 {ISCSI_PORT_SPEED_25GBPS, "25 Gbps" },
4292 {ISCSI_PORT_SPEED_40GBPS, "40 Gbps" },
4295 char *iscsi_get_port_speed_name(struct Scsi_Host *shost)
4298 char *speed = "Unknown!";
4299 struct iscsi_cls_host *ihost = shost->shost_data;
4300 uint32_t port_speed = ihost->port_speed;
4302 for (i = 0; i < ARRAY_SIZE(iscsi_port_speed_names); i++) {
4303 if (iscsi_port_speed_names[i].value & port_speed) {
4304 speed = iscsi_port_speed_names[i].name;
4310 EXPORT_SYMBOL_GPL(iscsi_get_port_speed_name);
4312 /* convert iscsi_port_state values to ascii string name */
4313 static const struct {
4314 enum iscsi_port_state value;
4316 } iscsi_port_state_names[] = {
4317 {ISCSI_PORT_STATE_DOWN, "LINK DOWN" },
4318 {ISCSI_PORT_STATE_UP, "LINK UP" },
4321 char *iscsi_get_port_state_name(struct Scsi_Host *shost)
4324 char *state = "Unknown!";
4325 struct iscsi_cls_host *ihost = shost->shost_data;
4326 uint32_t port_state = ihost->port_state;
4328 for (i = 0; i < ARRAY_SIZE(iscsi_port_state_names); i++) {
4329 if (iscsi_port_state_names[i].value & port_state) {
4330 state = iscsi_port_state_names[i].name;
4336 EXPORT_SYMBOL_GPL(iscsi_get_port_state_name);
4338 static int iscsi_session_match(struct attribute_container *cont,
4341 struct iscsi_cls_session *session;
4342 struct Scsi_Host *shost;
4343 struct iscsi_internal *priv;
4345 if (!iscsi_is_session_dev(dev))
4348 session = iscsi_dev_to_session(dev);
4349 shost = iscsi_session_to_shost(session);
4350 if (!shost->transportt)
4353 priv = to_iscsi_internal(shost->transportt);
4354 if (priv->session_cont.ac.class != &iscsi_session_class.class)
4357 return &priv->session_cont.ac == cont;
4360 static int iscsi_conn_match(struct attribute_container *cont,
4363 struct iscsi_cls_session *session;
4364 struct iscsi_cls_conn *conn;
4365 struct Scsi_Host *shost;
4366 struct iscsi_internal *priv;
4368 if (!iscsi_is_conn_dev(dev))
4371 conn = iscsi_dev_to_conn(dev);
4372 session = iscsi_dev_to_session(conn->dev.parent);
4373 shost = iscsi_session_to_shost(session);
4375 if (!shost->transportt)
4378 priv = to_iscsi_internal(shost->transportt);
4379 if (priv->conn_cont.ac.class != &iscsi_connection_class.class)
4382 return &priv->conn_cont.ac == cont;
4385 static int iscsi_host_match(struct attribute_container *cont,
4388 struct Scsi_Host *shost;
4389 struct iscsi_internal *priv;
4391 if (!scsi_is_host_device(dev))
4394 shost = dev_to_shost(dev);
4395 if (!shost->transportt ||
4396 shost->transportt->host_attrs.ac.class != &iscsi_host_class.class)
4399 priv = to_iscsi_internal(shost->transportt);
4400 return &priv->t.host_attrs.ac == cont;
4403 struct scsi_transport_template *
4404 iscsi_register_transport(struct iscsi_transport *tt)
4406 struct iscsi_internal *priv;
4407 unsigned long flags;
4412 priv = iscsi_if_transport_lookup(tt);
4416 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
4419 INIT_LIST_HEAD(&priv->list);
4420 priv->iscsi_transport = tt;
4421 priv->t.user_scan = iscsi_user_scan;
4422 priv->t.create_work_queue = 1;
4424 priv->dev.class = &iscsi_transport_class;
4425 dev_set_name(&priv->dev, "%s", tt->name);
4426 err = device_register(&priv->dev);
4430 err = sysfs_create_group(&priv->dev.kobj, &iscsi_transport_group);
4432 goto unregister_dev;
4434 /* host parameters */
4435 priv->t.host_attrs.ac.class = &iscsi_host_class.class;
4436 priv->t.host_attrs.ac.match = iscsi_host_match;
4437 priv->t.host_attrs.ac.grp = &iscsi_host_group;
4438 priv->t.host_size = sizeof(struct iscsi_cls_host);
4439 transport_container_register(&priv->t.host_attrs);
4441 /* connection parameters */
4442 priv->conn_cont.ac.class = &iscsi_connection_class.class;
4443 priv->conn_cont.ac.match = iscsi_conn_match;
4444 priv->conn_cont.ac.grp = &iscsi_conn_group;
4445 transport_container_register(&priv->conn_cont);
4447 /* session parameters */
4448 priv->session_cont.ac.class = &iscsi_session_class.class;
4449 priv->session_cont.ac.match = iscsi_session_match;
4450 priv->session_cont.ac.grp = &iscsi_session_group;
4451 transport_container_register(&priv->session_cont);
4453 spin_lock_irqsave(&iscsi_transport_lock, flags);
4454 list_add(&priv->list, &iscsi_transports);
4455 spin_unlock_irqrestore(&iscsi_transport_lock, flags);
4457 printk(KERN_NOTICE "iscsi: registered transport (%s)\n", tt->name);
4461 device_unregister(&priv->dev);
4467 EXPORT_SYMBOL_GPL(iscsi_register_transport);
4469 int iscsi_unregister_transport(struct iscsi_transport *tt)
4471 struct iscsi_internal *priv;
4472 unsigned long flags;
4476 mutex_lock(&rx_queue_mutex);
4478 priv = iscsi_if_transport_lookup(tt);
4481 spin_lock_irqsave(&iscsi_transport_lock, flags);
4482 list_del(&priv->list);
4483 spin_unlock_irqrestore(&iscsi_transport_lock, flags);
4485 transport_container_unregister(&priv->conn_cont);
4486 transport_container_unregister(&priv->session_cont);
4487 transport_container_unregister(&priv->t.host_attrs);
4489 sysfs_remove_group(&priv->dev.kobj, &iscsi_transport_group);
4490 device_unregister(&priv->dev);
4491 mutex_unlock(&rx_queue_mutex);
4495 EXPORT_SYMBOL_GPL(iscsi_unregister_transport);
4497 static __init int iscsi_transport_init(void)
4500 struct netlink_kernel_cfg cfg = {
4502 .input = iscsi_if_rx,
4504 printk(KERN_INFO "Loading iSCSI transport class v%s.\n",
4505 ISCSI_TRANSPORT_VERSION);
4507 atomic_set(&iscsi_session_nr, 0);
4509 err = class_register(&iscsi_transport_class);
4513 err = class_register(&iscsi_endpoint_class);
4515 goto unregister_transport_class;
4517 err = class_register(&iscsi_iface_class);
4519 goto unregister_endpoint_class;
4521 err = transport_class_register(&iscsi_host_class);
4523 goto unregister_iface_class;
4525 err = transport_class_register(&iscsi_connection_class);
4527 goto unregister_host_class;
4529 err = transport_class_register(&iscsi_session_class);
4531 goto unregister_conn_class;
4533 err = bus_register(&iscsi_flashnode_bus);
4535 goto unregister_session_class;
4537 nls = netlink_kernel_create(&init_net, NETLINK_ISCSI, &cfg);
4540 goto unregister_flashnode_bus;
4543 iscsi_eh_timer_workq = create_singlethread_workqueue("iscsi_eh");
4544 if (!iscsi_eh_timer_workq) {
4552 netlink_kernel_release(nls);
4553 unregister_flashnode_bus:
4554 bus_unregister(&iscsi_flashnode_bus);
4555 unregister_session_class:
4556 transport_class_unregister(&iscsi_session_class);
4557 unregister_conn_class:
4558 transport_class_unregister(&iscsi_connection_class);
4559 unregister_host_class:
4560 transport_class_unregister(&iscsi_host_class);
4561 unregister_iface_class:
4562 class_unregister(&iscsi_iface_class);
4563 unregister_endpoint_class:
4564 class_unregister(&iscsi_endpoint_class);
4565 unregister_transport_class:
4566 class_unregister(&iscsi_transport_class);
4570 static void __exit iscsi_transport_exit(void)
4572 destroy_workqueue(iscsi_eh_timer_workq);
4573 netlink_kernel_release(nls);
4574 bus_unregister(&iscsi_flashnode_bus);
4575 transport_class_unregister(&iscsi_connection_class);
4576 transport_class_unregister(&iscsi_session_class);
4577 transport_class_unregister(&iscsi_host_class);
4578 class_unregister(&iscsi_endpoint_class);
4579 class_unregister(&iscsi_iface_class);
4580 class_unregister(&iscsi_transport_class);
4583 module_init(iscsi_transport_init);
4584 module_exit(iscsi_transport_exit);
4586 MODULE_AUTHOR("Mike Christie <michaelc@cs.wisc.edu>, "
4587 "Dmitry Yusupov <dmitry_yus@yahoo.com>, "
4588 "Alex Aizman <itn780@yahoo.com>");
4589 MODULE_DESCRIPTION("iSCSI Transport Interface");
4590 MODULE_LICENSE("GPL");
4591 MODULE_VERSION(ISCSI_TRANSPORT_VERSION);
4592 MODULE_ALIAS_NET_PF_PROTO(PF_NETLINK, NETLINK_ISCSI);