static ssize_t lio_target_nacl_info_show()

in iscsi/iscsi_target_configfs.c [498:613]

• 109 lines of code
• 16 McCabe index (conditional complexity)

static ssize_t lio_target_nacl_info_show(struct config_item *item, char *page)
{
	struct se_node_acl *se_nacl = acl_to_nacl(item);
	struct iscsi_session *sess;
	struct iscsi_conn *conn;
	struct se_session *se_sess;
	ssize_t rb = 0;
	u32 max_cmd_sn;

	spin_lock_bh(&se_nacl->nacl_sess_lock);
	se_sess = se_nacl->nacl_sess;
	if (!se_sess) {
		rb += sprintf(page+rb, "No active iSCSI Session for Initiator"
			" Endpoint: %s\n", se_nacl->initiatorname);
	} else {
		sess = se_sess->fabric_sess_ptr;

		rb += sprintf(page+rb, "InitiatorName: %s\n",
			sess->sess_ops->InitiatorName);
		rb += sprintf(page+rb, "InitiatorAlias: %s\n",
			sess->sess_ops->InitiatorAlias);

		rb += sprintf(page+rb,
			      "LIO Session ID: %u   ISID: 0x%6ph  TSIH: %hu  ",
			      sess->sid, sess->isid, sess->tsih);
		rb += sprintf(page+rb, "SessionType: %s\n",
				(sess->sess_ops->SessionType) ?
				"Discovery" : "Normal");
		rb += sprintf(page+rb, "Session State: ");
		switch (sess->session_state) {
		case TARG_SESS_STATE_FREE:
			rb += sprintf(page+rb, "TARG_SESS_FREE\n");
			break;
		case TARG_SESS_STATE_ACTIVE:
			rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n");
			break;
		case TARG_SESS_STATE_LOGGED_IN:
			rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n");
			break;
		case TARG_SESS_STATE_FAILED:
			rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n");
			break;
		case TARG_SESS_STATE_IN_CONTINUE:
			rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n");
			break;
		default:
			rb += sprintf(page+rb, "ERROR: Unknown Session"
					" State!\n");
			break;
		}

		rb += sprintf(page+rb, "---------------------[iSCSI Session"
				" Values]-----------------------\n");
		rb += sprintf(page+rb, "  CmdSN/WR  :  CmdSN/WC  :  ExpCmdSN"
				"  :  MaxCmdSN  :     ITT    :     TTT\n");
		max_cmd_sn = (u32) atomic_read(&sess->max_cmd_sn);
		rb += sprintf(page+rb, " 0x%08x   0x%08x   0x%08x   0x%08x"
				"   0x%08x   0x%08x\n",
			sess->cmdsn_window,
			(max_cmd_sn - sess->exp_cmd_sn) + 1,
			sess->exp_cmd_sn, max_cmd_sn,
			sess->init_task_tag, sess->targ_xfer_tag);
		rb += sprintf(page+rb, "----------------------[iSCSI"
				" Connections]-------------------------\n");

		spin_lock(&sess->conn_lock);
		list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
			rb += sprintf(page+rb, "CID: %hu  Connection"
					" State: ", conn->cid);
			switch (conn->conn_state) {
			case TARG_CONN_STATE_FREE:
				rb += sprintf(page+rb,
					"TARG_CONN_STATE_FREE\n");
				break;
			case TARG_CONN_STATE_XPT_UP:
				rb += sprintf(page+rb,
					"TARG_CONN_STATE_XPT_UP\n");
				break;
			case TARG_CONN_STATE_IN_LOGIN:
				rb += sprintf(page+rb,
					"TARG_CONN_STATE_IN_LOGIN\n");
				break;
			case TARG_CONN_STATE_LOGGED_IN:
				rb += sprintf(page+rb,
					"TARG_CONN_STATE_LOGGED_IN\n");
				break;
			case TARG_CONN_STATE_IN_LOGOUT:
				rb += sprintf(page+rb,
					"TARG_CONN_STATE_IN_LOGOUT\n");
				break;
			case TARG_CONN_STATE_LOGOUT_REQUESTED:
				rb += sprintf(page+rb,
					"TARG_CONN_STATE_LOGOUT_REQUESTED\n");
				break;
			case TARG_CONN_STATE_CLEANUP_WAIT:
				rb += sprintf(page+rb,
					"TARG_CONN_STATE_CLEANUP_WAIT\n");
				break;
			default:
				rb += sprintf(page+rb,
					"ERROR: Unknown Connection State!\n");
				break;
			}

			rb += sprintf(page+rb, "   Address %pISc %s", &conn->login_sockaddr,
				(conn->network_transport == ISCSI_TCP) ?
				"TCP" : "SCTP");
			rb += sprintf(page+rb, "  StatSN: 0x%08x\n",
				conn->stat_sn);
		}
		spin_unlock(&sess->conn_lock);
	}
	spin_unlock_bh(&se_nacl->nacl_sess_lock);

	return rb;
}