target/iscsi/iscsi_target_tpg.c

27 	struct iscsi_portal_group *tpg;
29 	tpg = kzalloc(sizeof(struct iscsi_portal_group), GFP_KERNEL);
30 	if (!tpg) {
35 	tpg->tpgt = tpgt;
36 	tpg->tpg_state = TPG_STATE_FREE;
37 	tpg->tpg_tiqn = tiqn;
38 	INIT_LIST_HEAD(&tpg->tpg_gnp_list);
39 	INIT_LIST_HEAD(&tpg->tpg_list);
40 	mutex_init(&tpg->tpg_access_lock);
41 	sema_init(&tpg->np_login_sem, 1);
42 	spin_lock_init(&tpg->tpg_state_lock);
43 	spin_lock_init(&tpg->tpg_np_lock);
45 	return tpg;
53 	struct iscsi_portal_group *tpg;
56 	tpg = iscsit_alloc_portal_group(NULL, 1);
57 	if (!tpg) {
65 	tpg->tpg_se_tpg.se_tpg_tfo = &iscsi_ops;
66 	ret = core_tpg_register(NULL, &tpg->tpg_se_tpg, -1);
68 		kfree(tpg);
72 	tpg->sid = 1; /* First Assigned LIO Session ID */
73 	iscsit_set_default_tpg_attribs(tpg);
75 	if (iscsi_create_default_params(&tpg->param_list) < 0)
83 	param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list);
90 	tpg->tpg_attrib.authentication = 0;
92 	spin_lock(&tpg->tpg_state_lock);
93 	tpg->tpg_state  = TPG_STATE_ACTIVE;
94 	spin_unlock(&tpg->tpg_state_lock);
96 	iscsit_global->discovery_tpg = tpg;
101 	iscsi_release_param_list(tpg->param_list);
103 	if (tpg->sid == 1)
104 		core_tpg_deregister(&tpg->tpg_se_tpg);
105 	kfree(tpg);
111 	struct iscsi_portal_group *tpg = iscsit_global->discovery_tpg;
113 	if (!tpg)
116 	iscsi_release_param_list(tpg->param_list);
117 	core_tpg_deregister(&tpg->tpg_se_tpg);
119 	kfree(tpg);
128 	struct iscsi_portal_group *tpg = NULL;
132 	list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) {
134 		spin_lock(&tpg->tpg_state_lock);
135 		if (tpg->tpg_state != TPG_STATE_ACTIVE) {
136 			spin_unlock(&tpg->tpg_state_lock);
139 		spin_unlock(&tpg->tpg_state_lock);
141 		spin_lock(&tpg->tpg_np_lock);
142 		list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) {
146 				spin_unlock(&tpg->tpg_np_lock);
148 				return tpg;
151 		spin_unlock(&tpg->tpg_np_lock);
159 	struct iscsi_portal_group *tpg)
161 	return mutex_lock_interruptible(&tpg->tpg_access_lock);
164 void iscsit_put_tpg(struct iscsi_portal_group *tpg)
166 	mutex_unlock(&tpg->tpg_access_lock);
171 	struct iscsi_portal_group *tpg,
181 	iscsit_reset_np_thread(tpg_np->tpg_np, tpg_np, tpg, shutdown);
185 	struct iscsi_portal_group *tpg,
190 	spin_lock(&tpg->tpg_np_lock);
191 	list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) {
196 		spin_unlock(&tpg->tpg_np_lock);
197 		iscsit_clear_tpg_np_login_thread(tpg_np, tpg, shutdown);
198 		spin_lock(&tpg->tpg_np_lock);
200 	spin_unlock(&tpg->tpg_np_lock);
203 void iscsit_tpg_dump_params(struct iscsi_portal_group *tpg)
205 	iscsi_print_params(tpg->param_list);
208 static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *tpg)
210 	struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
227 int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg)
229 	if (tpg->tpg_state != TPG_STATE_FREE) {
231 			" while not in TPG_STATE_FREE state.\n", tpg->tpgt);
234 	iscsit_set_default_tpg_attribs(tpg);
236 	if (iscsi_create_default_params(&tpg->param_list) < 0)
239 	tpg->tpg_attrib.tpg = tpg;
241 	spin_lock(&tpg->tpg_state_lock);
242 	tpg->tpg_state	= TPG_STATE_INACTIVE;
243 	spin_unlock(&tpg->tpg_state_lock);
246 	list_add_tail(&tpg->tpg_list, &tiqn->tiqn_tpg_list);
249 			tiqn->tiqn, tpg->tpgt);
254 	if (tpg->param_list) {
255 		iscsi_release_param_list(tpg->param_list);
256 		tpg->param_list = NULL;
263 	struct iscsi_portal_group *tpg,
266 	u8 old_state = tpg->tpg_state;
268 	spin_lock(&tpg->tpg_state_lock);
269 	tpg->tpg_state = TPG_STATE_INACTIVE;
270 	spin_unlock(&tpg->tpg_state_lock);
272 	if (iscsit_release_sessions_for_tpg(tpg, force) < 0) {
275 			tpg->tpgt);
276 		tpg->tpg_state = old_state;
280 	if (tpg->param_list) {
281 		iscsi_release_param_list(tpg->param_list);
282 		tpg->param_list = NULL;
285 	core_tpg_deregister(&tpg->tpg_se_tpg);
287 	spin_lock(&tpg->tpg_state_lock);
288 	tpg->tpg_state = TPG_STATE_FREE;
289 	spin_unlock(&tpg->tpg_state_lock);
293 	list_del(&tpg->tpg_list);
297 			tiqn->tiqn, tpg->tpgt);
299 	kfree(tpg);
303 int iscsit_tpg_enable_portal_group(struct iscsi_portal_group *tpg)
306 	struct iscsi_tiqn *tiqn = tpg->tpg_tiqn;
309 	if (tpg->tpg_state == TPG_STATE_ACTIVE) {
311 			" active, ignoring request.\n", tpg->tpgt);
319 	param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list);
323 	if (tpg->tpg_attrib.authentication) {
330 		ret = iscsit_ta_authentication(tpg, 1);
335 	spin_lock(&tpg->tpg_state_lock);
336 	tpg->tpg_state = TPG_STATE_ACTIVE;
337 	spin_unlock(&tpg->tpg_state_lock);
342 			tpg->tpgt);
351 int iscsit_tpg_disable_portal_group(struct iscsi_portal_group *tpg, int force)
354 	u8 old_state = tpg->tpg_state;
356 	spin_lock(&tpg->tpg_state_lock);
357 	if (tpg->tpg_state == TPG_STATE_INACTIVE) {
359 			" inactive, ignoring request.\n", tpg->tpgt);
360 		spin_unlock(&tpg->tpg_state_lock);
363 	tpg->tpg_state = TPG_STATE_INACTIVE;
364 	spin_unlock(&tpg->tpg_state_lock);
366 	iscsit_clear_tpg_np_login_threads(tpg, false);
368 	if (iscsit_release_sessions_for_tpg(tpg, force) < 0) {
369 		spin_lock(&tpg->tpg_state_lock);
370 		tpg->tpg_state = old_state;
371 		spin_unlock(&tpg->tpg_state_lock);
374 			tpg->tpgt);
378 	tiqn = tpg->tpg_tiqn;
379 	if (!tiqn || (tpg == iscsit_global->discovery_tpg))
385 			tpg->tpgt);
426 	struct iscsi_portal_group *tpg;
432 	list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) {
434 		spin_lock(&tpg->tpg_np_lock);
435 		list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) {
443 		spin_unlock(&tpg->tpg_np_lock);
454 	struct iscsi_portal_group *tpg,
463 		if (iscsit_tpg_check_network_portal(tpg->tpg_tiqn, sockaddr,
467 				tpg->tpg_tiqn->tiqn);
492 	tpg_np->tpg		= tpg;
494 	spin_lock(&tpg->tpg_np_lock);
495 	list_add_tail(&tpg_np->tpg_np_list, &tpg->tpg_gnp_list);
496 	tpg->num_tpg_nps++;
497 	if (tpg->tpg_tiqn)
498 		tpg->tpg_tiqn->tiqn_num_tpg_nps++;
499 	spin_unlock(&tpg->tpg_np_lock);
510 		tpg->tpg_tiqn->tiqn, &np->np_sockaddr, tpg->tpgt,
518 	struct iscsi_portal_group *tpg,
521 	iscsit_clear_tpg_np_login_thread(tpg_np, tpg, true);
524 		tpg->tpg_tiqn->tiqn, &np->np_sockaddr, tpg->tpgt,
528 	tpg_np->tpg = NULL;
537 	struct iscsi_portal_group *tpg,
553 		 * We are the parent tpg network portal.  Release all of the
560 			ret = iscsit_tpg_del_network_portal(tpg, tpg_np_child);
567 		 * We are not the parent ISCSI_TCP tpg network portal.  Release
575 	spin_lock(&tpg->tpg_np_lock);
577 	tpg->num_tpg_nps--;
578 	if (tpg->tpg_tiqn)
579 		tpg->tpg_tiqn->tiqn_num_tpg_nps--;
580 	spin_unlock(&tpg->tpg_np_lock);
582 	return iscsit_tpg_release_np(tpg_np, tpg, np);
585 int iscsit_ta_authentication(struct iscsi_portal_group *tpg, u32 authentication)
590 	struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
601 	param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list);
640 		a->authentication ? "Enforcing" : "Disabling", tpg->tpgt);
646 	struct iscsi_portal_group *tpg,
649 	struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
663 		" %hu\n", a->login_timeout, tpg->tpgt);
669 	struct iscsi_portal_group *tpg,
672 	struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
681 		tpg->tpgt, (a->generate_node_acls) ? "Enabled" : "Disabled");
693 	struct iscsi_portal_group *tpg,
696 	struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
712 		tpg->tpgt, a->default_cmdsn_depth);
718 	struct iscsi_portal_group *tpg,
721 	struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
736 		" ACLs %s\n", tpg->tpgt, (a->cache_dynamic_acls) ?
743 	struct iscsi_portal_group *tpg,
746 	struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
755 		tpg->tpgt, (a->demo_mode_write_protect) ? "ON" : "OFF");
761 	struct iscsi_portal_group *tpg,
764 	struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
773 		" %s\n", tpg->tpgt, (a->prod_mode_write_protect) ?
780 	struct iscsi_portal_group *tpg,
783 	struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
792 		" %s\n", tpg->tpgt, (a->demo_mode_discovery) ?
799 	struct iscsi_portal_group *tpg,
802 	struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
810 	pr_debug("iSCSI_TPG[%hu] - DefaultERL: %u\n", tpg->tpgt, a->default_erl);
816 	struct iscsi_portal_group *tpg,
819 	struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
828 		" %s\n", tpg->tpgt, (a->t10_pi) ?
835 	struct iscsi_portal_group *tpg,
838 	struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
847 		 tpg->tpgt, prot_type);
853 	struct iscsi_portal_group *tpg,
856 	struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
865 		" %s\n", tpg->tpgt, (a->tpg_enabled_sendtargets) ? "ON" : "OFF");
871 	struct iscsi_portal_group *tpg,
874 	struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
883 		tpg->tpgt, (a->login_keys_workaround) ? "ON" : "OFF");