target/iscsi/iscsi_target.c

68 	struct iscsi_tiqn *tiqn = NULL;
71 	list_for_each_entry(tiqn, &g_tiqn_list, tiqn_list) {
72 		if (!strcmp(tiqn->tiqn, buf)) {
74 			spin_lock(&tiqn->tiqn_state_lock);
75 			if (tiqn->tiqn_state == TIQN_STATE_ACTIVE) {
76 				tiqn->tiqn_access_count++;
77 				spin_unlock(&tiqn->tiqn_state_lock);
79 				return tiqn;
81 			spin_unlock(&tiqn->tiqn_state_lock);
89 static int iscsit_set_tiqn_shutdown(struct iscsi_tiqn *tiqn)
91 	spin_lock(&tiqn->tiqn_state_lock);
92 	if (tiqn->tiqn_state == TIQN_STATE_ACTIVE) {
93 		tiqn->tiqn_state = TIQN_STATE_SHUTDOWN;
94 		spin_unlock(&tiqn->tiqn_state_lock);
97 	spin_unlock(&tiqn->tiqn_state_lock);
102 void iscsit_put_tiqn_for_login(struct iscsi_tiqn *tiqn)
104 	spin_lock(&tiqn->tiqn_state_lock);
105 	tiqn->tiqn_access_count--;
106 	spin_unlock(&tiqn->tiqn_state_lock);
115 	struct iscsi_tiqn *tiqn = NULL;
124 	tiqn = kzalloc(sizeof(*tiqn), GFP_KERNEL);
125 	if (!tiqn)
128 	sprintf(tiqn->tiqn, "%s", buf);
129 	INIT_LIST_HEAD(&tiqn->tiqn_list);
130 	INIT_LIST_HEAD(&tiqn->tiqn_tpg_list);
131 	spin_lock_init(&tiqn->tiqn_state_lock);
132 	spin_lock_init(&tiqn->tiqn_tpg_lock);
133 	spin_lock_init(&tiqn->sess_err_stats.lock);
134 	spin_lock_init(&tiqn->login_stats.lock);
135 	spin_lock_init(&tiqn->logout_stats.lock);
137 	tiqn->tiqn_state = TIQN_STATE_ACTIVE;
144 		pr_err("idr_alloc() failed for tiqn->tiqn_index\n");
147 		kfree(tiqn);
150 	tiqn->tiqn_index = ret;
151 	list_add_tail(&tiqn->tiqn_list, &g_tiqn_list);
156 	pr_debug("CORE[0] - Added iSCSI Target IQN: %s\n", tiqn->tiqn);
158 	return tiqn;
162 static void iscsit_wait_for_tiqn(struct iscsi_tiqn *tiqn)
167 	spin_lock(&tiqn->tiqn_state_lock);
168 	while (tiqn->tiqn_access_count != 0) {
169 		spin_unlock(&tiqn->tiqn_state_lock);
171 		spin_lock(&tiqn->tiqn_state_lock);
173 	spin_unlock(&tiqn->tiqn_state_lock);
176 void iscsit_del_tiqn(struct iscsi_tiqn *tiqn)
179 	 * iscsit_set_tiqn_shutdown sets tiqn->tiqn_state = TIQN_STATE_SHUTDOWN
180 	 * while holding tiqn->tiqn_state_lock.  This means that all subsequent
184 	if (iscsit_set_tiqn_shutdown(tiqn) < 0) {
189 	iscsit_wait_for_tiqn(tiqn);
192 	list_del(&tiqn->tiqn_list);
193 	idr_remove(&tiqn_idr, tiqn->tiqn_index);
197 			tiqn->tiqn);
198 	kfree(tiqn);
252 	struct iscsi_tiqn *tiqn = tpg->tpg_tiqn;
259 	if (tiqn)
260 		iscsit_put_tiqn_for_login(tiqn);
2488 	struct iscsi_tiqn *tiqn = iscsit_snmp_get_tiqn(conn);
2493 	if (tiqn) {
2494 		spin_lock(&tiqn->logout_stats.lock);
2496 			tiqn->logout_stats.normal_logouts++;
2498 			tiqn->logout_stats.abnormal_logouts++;
2499 		spin_unlock(&tiqn->logout_stats.lock);
3378 	struct iscsi_tiqn *tiqn;
3412 	list_for_each_entry(tiqn, &g_tiqn_list, tiqn_list) {
3414 		     strcmp(tiqn->tiqn, text_ptr)) {
3420 		spin_lock(&tiqn->tiqn_tpg_lock);
3421 		list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) {
3453 						      tiqn->tiqn);
3458 						spin_unlock(&tiqn->tiqn_tpg_lock);
3487 					spin_unlock(&tiqn->tiqn_tpg_lock);
3503 		spin_unlock(&tiqn->tiqn_tpg_lock);