599 строки
16 KiB
C
599 строки
16 KiB
C
/*
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* iSCSI User/Kernel Shares (Defines, Constants, Protocol definitions, etc)
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*
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* Copyright (C) 2005 Dmitry Yusupov
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* Copyright (C) 2005 Alex Aizman
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* maintained by open-iscsi@googlegroups.com
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published
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* by the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* See the file COPYING included with this distribution for more details.
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*/
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#ifndef ISCSI_IF_H
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#define ISCSI_IF_H
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#include <scsi/iscsi_proto.h>
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#include <linux/in.h>
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#include <linux/in6.h>
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#define ISCSI_NL_GRP_ISCSID 1
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#define ISCSI_NL_GRP_UIP 2
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#define UEVENT_BASE 10
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#define KEVENT_BASE 100
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#define ISCSI_ERR_BASE 1000
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enum iscsi_uevent_e {
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ISCSI_UEVENT_UNKNOWN = 0,
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/* down events */
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ISCSI_UEVENT_CREATE_SESSION = UEVENT_BASE + 1,
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ISCSI_UEVENT_DESTROY_SESSION = UEVENT_BASE + 2,
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ISCSI_UEVENT_CREATE_CONN = UEVENT_BASE + 3,
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ISCSI_UEVENT_DESTROY_CONN = UEVENT_BASE + 4,
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ISCSI_UEVENT_BIND_CONN = UEVENT_BASE + 5,
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ISCSI_UEVENT_SET_PARAM = UEVENT_BASE + 6,
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ISCSI_UEVENT_START_CONN = UEVENT_BASE + 7,
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ISCSI_UEVENT_STOP_CONN = UEVENT_BASE + 8,
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ISCSI_UEVENT_SEND_PDU = UEVENT_BASE + 9,
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ISCSI_UEVENT_GET_STATS = UEVENT_BASE + 10,
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ISCSI_UEVENT_GET_PARAM = UEVENT_BASE + 11,
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ISCSI_UEVENT_TRANSPORT_EP_CONNECT = UEVENT_BASE + 12,
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ISCSI_UEVENT_TRANSPORT_EP_POLL = UEVENT_BASE + 13,
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ISCSI_UEVENT_TRANSPORT_EP_DISCONNECT = UEVENT_BASE + 14,
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ISCSI_UEVENT_TGT_DSCVR = UEVENT_BASE + 15,
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ISCSI_UEVENT_SET_HOST_PARAM = UEVENT_BASE + 16,
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ISCSI_UEVENT_UNBIND_SESSION = UEVENT_BASE + 17,
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ISCSI_UEVENT_CREATE_BOUND_SESSION = UEVENT_BASE + 18,
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ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST = UEVENT_BASE + 19,
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ISCSI_UEVENT_PATH_UPDATE = UEVENT_BASE + 20,
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ISCSI_UEVENT_SET_IFACE_PARAMS = UEVENT_BASE + 21,
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ISCSI_UEVENT_PING = UEVENT_BASE + 22,
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ISCSI_UEVENT_GET_CHAP = UEVENT_BASE + 23,
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ISCSI_UEVENT_DELETE_CHAP = UEVENT_BASE + 24,
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/* up events */
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ISCSI_KEVENT_RECV_PDU = KEVENT_BASE + 1,
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ISCSI_KEVENT_CONN_ERROR = KEVENT_BASE + 2,
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ISCSI_KEVENT_IF_ERROR = KEVENT_BASE + 3,
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ISCSI_KEVENT_DESTROY_SESSION = KEVENT_BASE + 4,
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ISCSI_KEVENT_UNBIND_SESSION = KEVENT_BASE + 5,
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ISCSI_KEVENT_CREATE_SESSION = KEVENT_BASE + 6,
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ISCSI_KEVENT_PATH_REQ = KEVENT_BASE + 7,
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ISCSI_KEVENT_IF_DOWN = KEVENT_BASE + 8,
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ISCSI_KEVENT_CONN_LOGIN_STATE = KEVENT_BASE + 9,
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ISCSI_KEVENT_HOST_EVENT = KEVENT_BASE + 10,
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ISCSI_KEVENT_PING_COMP = KEVENT_BASE + 11,
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};
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enum iscsi_tgt_dscvr {
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ISCSI_TGT_DSCVR_SEND_TARGETS = 1,
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ISCSI_TGT_DSCVR_ISNS = 2,
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ISCSI_TGT_DSCVR_SLP = 3,
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};
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enum iscsi_host_event_code {
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ISCSI_EVENT_LINKUP = 1,
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ISCSI_EVENT_LINKDOWN,
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/* must always be last */
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ISCSI_EVENT_MAX,
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};
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struct iscsi_uevent {
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uint32_t type; /* k/u events type */
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uint32_t iferror; /* carries interface or resource errors */
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uint64_t transport_handle;
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union {
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/* messages u -> k */
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struct msg_create_session {
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uint32_t initial_cmdsn;
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uint16_t cmds_max;
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uint16_t queue_depth;
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} c_session;
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struct msg_create_bound_session {
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uint64_t ep_handle;
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uint32_t initial_cmdsn;
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uint16_t cmds_max;
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uint16_t queue_depth;
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} c_bound_session;
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struct msg_destroy_session {
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uint32_t sid;
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} d_session;
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struct msg_create_conn {
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uint32_t sid;
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uint32_t cid;
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} c_conn;
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struct msg_bind_conn {
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uint32_t sid;
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uint32_t cid;
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uint64_t transport_eph;
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uint32_t is_leading;
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} b_conn;
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struct msg_destroy_conn {
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uint32_t sid;
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uint32_t cid;
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} d_conn;
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struct msg_send_pdu {
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uint32_t sid;
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uint32_t cid;
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uint32_t hdr_size;
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uint32_t data_size;
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} send_pdu;
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struct msg_set_param {
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uint32_t sid;
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uint32_t cid;
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uint32_t param; /* enum iscsi_param */
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uint32_t len;
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} set_param;
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struct msg_start_conn {
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uint32_t sid;
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uint32_t cid;
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} start_conn;
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struct msg_stop_conn {
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uint32_t sid;
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uint32_t cid;
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uint64_t conn_handle;
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uint32_t flag;
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} stop_conn;
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struct msg_get_stats {
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uint32_t sid;
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uint32_t cid;
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} get_stats;
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struct msg_transport_connect {
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uint32_t non_blocking;
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} ep_connect;
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struct msg_transport_connect_through_host {
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uint32_t host_no;
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uint32_t non_blocking;
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} ep_connect_through_host;
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struct msg_transport_poll {
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uint64_t ep_handle;
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uint32_t timeout_ms;
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} ep_poll;
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struct msg_transport_disconnect {
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uint64_t ep_handle;
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} ep_disconnect;
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struct msg_tgt_dscvr {
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enum iscsi_tgt_dscvr type;
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uint32_t host_no;
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/*
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* enable = 1 to establish a new connection
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* with the server. enable = 0 to disconnect
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* from the server. Used primarily to switch
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* from one iSNS server to another.
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*/
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uint32_t enable;
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} tgt_dscvr;
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struct msg_set_host_param {
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uint32_t host_no;
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uint32_t param; /* enum iscsi_host_param */
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uint32_t len;
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} set_host_param;
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struct msg_set_path {
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uint32_t host_no;
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} set_path;
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struct msg_set_iface_params {
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uint32_t host_no;
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uint32_t count;
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} set_iface_params;
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struct msg_iscsi_ping {
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uint32_t host_no;
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uint32_t iface_num;
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uint32_t iface_type;
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uint32_t payload_size;
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uint32_t pid; /* unique ping id associated
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with each ping request */
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} iscsi_ping;
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struct msg_get_chap {
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uint32_t host_no;
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uint32_t num_entries; /* number of CHAP entries
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* on request, number of
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* valid CHAP entries on
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* response */
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uint16_t chap_tbl_idx;
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} get_chap;
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struct msg_delete_chap {
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uint32_t host_no;
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uint16_t chap_tbl_idx;
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} delete_chap;
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} u;
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union {
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/* messages k -> u */
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int retcode;
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struct msg_create_session_ret {
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uint32_t sid;
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uint32_t host_no;
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} c_session_ret;
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struct msg_create_conn_ret {
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uint32_t sid;
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uint32_t cid;
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} c_conn_ret;
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struct msg_unbind_session {
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uint32_t sid;
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uint32_t host_no;
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} unbind_session;
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struct msg_recv_req {
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uint32_t sid;
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uint32_t cid;
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uint64_t recv_handle;
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} recv_req;
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struct msg_conn_login {
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uint32_t sid;
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uint32_t cid;
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uint32_t state; /* enum iscsi_conn_state */
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} conn_login;
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struct msg_conn_error {
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uint32_t sid;
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uint32_t cid;
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uint32_t error; /* enum iscsi_err */
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} connerror;
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struct msg_session_destroyed {
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uint32_t host_no;
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uint32_t sid;
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} d_session;
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struct msg_transport_connect_ret {
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uint64_t handle;
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} ep_connect_ret;
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struct msg_req_path {
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uint32_t host_no;
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} req_path;
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struct msg_notify_if_down {
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uint32_t host_no;
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} notify_if_down;
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struct msg_host_event {
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uint32_t host_no;
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uint32_t data_size;
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enum iscsi_host_event_code code;
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} host_event;
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struct msg_ping_comp {
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uint32_t host_no;
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uint32_t status; /* enum
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* iscsi_ping_status_code */
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uint32_t pid; /* unique ping id associated
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with each ping request */
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uint32_t data_size;
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} ping_comp;
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} r;
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} __attribute__ ((aligned (sizeof(uint64_t))));
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enum iscsi_param_type {
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ISCSI_PARAM, /* iscsi_param (session, conn, target, LU) */
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ISCSI_HOST_PARAM, /* iscsi_host_param */
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ISCSI_NET_PARAM, /* iscsi_net_param */
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};
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struct iscsi_iface_param_info {
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uint32_t iface_num; /* iface number, 0 - n */
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uint32_t len; /* Actual length of the param */
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uint16_t param; /* iscsi param value */
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uint8_t iface_type; /* IPv4 or IPv6 */
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uint8_t param_type; /* iscsi_param_type */
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uint8_t value[0]; /* length sized value follows */
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} __packed;
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/*
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* To keep the struct iscsi_uevent size the same for userspace code
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* compatibility, the main structure for ISCSI_UEVENT_PATH_UPDATE and
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* ISCSI_KEVENT_PATH_REQ is defined separately and comes after the
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* struct iscsi_uevent in the NETLINK_ISCSI message.
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*/
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struct iscsi_path {
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uint64_t handle;
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uint8_t mac_addr[6];
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uint8_t mac_addr_old[6];
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uint32_t ip_addr_len; /* 4 or 16 */
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union {
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struct in_addr v4_addr;
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struct in6_addr v6_addr;
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} src;
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union {
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struct in_addr v4_addr;
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struct in6_addr v6_addr;
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} dst;
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uint16_t vlan_id;
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uint16_t pmtu;
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} __attribute__ ((aligned (sizeof(uint64_t))));
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/* iscsi iface enabled/disabled setting */
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#define ISCSI_IFACE_DISABLE 0x01
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#define ISCSI_IFACE_ENABLE 0x02
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/* ipv4 bootproto */
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#define ISCSI_BOOTPROTO_STATIC 0x01
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#define ISCSI_BOOTPROTO_DHCP 0x02
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/* ipv6 addr autoconfig type */
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#define ISCSI_IPV6_AUTOCFG_DISABLE 0x01
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#define ISCSI_IPV6_AUTOCFG_ND_ENABLE 0x02
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#define ISCSI_IPV6_AUTOCFG_DHCPV6_ENABLE 0x03
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/* ipv6 link local addr type */
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#define ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE 0x01
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#define ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE 0x02
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/* ipv6 router addr type */
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#define ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE 0x01
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#define ISCSI_IPV6_ROUTER_AUTOCFG_DISABLE 0x02
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#define ISCSI_IFACE_TYPE_IPV4 0x01
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#define ISCSI_IFACE_TYPE_IPV6 0x02
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#define ISCSI_MAX_VLAN_ID 4095
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#define ISCSI_MAX_VLAN_PRIORITY 7
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/* iscsi vlan enable/disabled setting */
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#define ISCSI_VLAN_DISABLE 0x01
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#define ISCSI_VLAN_ENABLE 0x02
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/* iSCSI network params */
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enum iscsi_net_param {
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ISCSI_NET_PARAM_IPV4_ADDR = 1,
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ISCSI_NET_PARAM_IPV4_SUBNET = 2,
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ISCSI_NET_PARAM_IPV4_GW = 3,
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ISCSI_NET_PARAM_IPV4_BOOTPROTO = 4,
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ISCSI_NET_PARAM_MAC = 5,
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ISCSI_NET_PARAM_IPV6_LINKLOCAL = 6,
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ISCSI_NET_PARAM_IPV6_ADDR = 7,
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ISCSI_NET_PARAM_IPV6_ROUTER = 8,
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ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG = 9,
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ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG = 10,
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ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG = 11,
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ISCSI_NET_PARAM_IFACE_ENABLE = 12,
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ISCSI_NET_PARAM_VLAN_ID = 13,
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ISCSI_NET_PARAM_VLAN_PRIORITY = 14,
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ISCSI_NET_PARAM_VLAN_ENABLED = 15,
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ISCSI_NET_PARAM_VLAN_TAG = 16,
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ISCSI_NET_PARAM_IFACE_TYPE = 17,
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ISCSI_NET_PARAM_IFACE_NAME = 18,
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ISCSI_NET_PARAM_MTU = 19,
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ISCSI_NET_PARAM_PORT = 20,
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};
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enum iscsi_conn_state {
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ISCSI_CONN_STATE_FREE,
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ISCSI_CONN_STATE_XPT_WAIT,
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ISCSI_CONN_STATE_IN_LOGIN,
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ISCSI_CONN_STATE_LOGGED_IN,
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ISCSI_CONN_STATE_IN_LOGOUT,
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ISCSI_CONN_STATE_LOGOUT_REQUESTED,
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ISCSI_CONN_STATE_CLEANUP_WAIT,
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};
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/*
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* Common error codes
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*/
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enum iscsi_err {
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ISCSI_OK = 0,
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ISCSI_ERR_DATASN = ISCSI_ERR_BASE + 1,
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ISCSI_ERR_DATA_OFFSET = ISCSI_ERR_BASE + 2,
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ISCSI_ERR_MAX_CMDSN = ISCSI_ERR_BASE + 3,
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ISCSI_ERR_EXP_CMDSN = ISCSI_ERR_BASE + 4,
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ISCSI_ERR_BAD_OPCODE = ISCSI_ERR_BASE + 5,
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ISCSI_ERR_DATALEN = ISCSI_ERR_BASE + 6,
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ISCSI_ERR_AHSLEN = ISCSI_ERR_BASE + 7,
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ISCSI_ERR_PROTO = ISCSI_ERR_BASE + 8,
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ISCSI_ERR_LUN = ISCSI_ERR_BASE + 9,
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ISCSI_ERR_BAD_ITT = ISCSI_ERR_BASE + 10,
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ISCSI_ERR_CONN_FAILED = ISCSI_ERR_BASE + 11,
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ISCSI_ERR_R2TSN = ISCSI_ERR_BASE + 12,
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ISCSI_ERR_SESSION_FAILED = ISCSI_ERR_BASE + 13,
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ISCSI_ERR_HDR_DGST = ISCSI_ERR_BASE + 14,
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ISCSI_ERR_DATA_DGST = ISCSI_ERR_BASE + 15,
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ISCSI_ERR_PARAM_NOT_FOUND = ISCSI_ERR_BASE + 16,
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ISCSI_ERR_NO_SCSI_CMD = ISCSI_ERR_BASE + 17,
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ISCSI_ERR_INVALID_HOST = ISCSI_ERR_BASE + 18,
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ISCSI_ERR_XMIT_FAILED = ISCSI_ERR_BASE + 19,
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ISCSI_ERR_TCP_CONN_CLOSE = ISCSI_ERR_BASE + 20,
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ISCSI_ERR_SCSI_EH_SESSION_RST = ISCSI_ERR_BASE + 21,
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};
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/*
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* iSCSI Parameters (RFC3720)
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*/
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enum iscsi_param {
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/* passed in using netlink set param */
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ISCSI_PARAM_MAX_RECV_DLENGTH,
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ISCSI_PARAM_MAX_XMIT_DLENGTH,
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ISCSI_PARAM_HDRDGST_EN,
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ISCSI_PARAM_DATADGST_EN,
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ISCSI_PARAM_INITIAL_R2T_EN,
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ISCSI_PARAM_MAX_R2T,
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ISCSI_PARAM_IMM_DATA_EN,
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ISCSI_PARAM_FIRST_BURST,
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ISCSI_PARAM_MAX_BURST,
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ISCSI_PARAM_PDU_INORDER_EN,
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ISCSI_PARAM_DATASEQ_INORDER_EN,
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ISCSI_PARAM_ERL,
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ISCSI_PARAM_IFMARKER_EN,
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ISCSI_PARAM_OFMARKER_EN,
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ISCSI_PARAM_EXP_STATSN,
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ISCSI_PARAM_TARGET_NAME,
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ISCSI_PARAM_TPGT,
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ISCSI_PARAM_PERSISTENT_ADDRESS,
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ISCSI_PARAM_PERSISTENT_PORT,
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ISCSI_PARAM_SESS_RECOVERY_TMO,
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/* passed in through bind conn using transport_fd */
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ISCSI_PARAM_CONN_PORT,
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ISCSI_PARAM_CONN_ADDRESS,
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ISCSI_PARAM_USERNAME,
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ISCSI_PARAM_USERNAME_IN,
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ISCSI_PARAM_PASSWORD,
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ISCSI_PARAM_PASSWORD_IN,
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ISCSI_PARAM_FAST_ABORT,
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ISCSI_PARAM_ABORT_TMO,
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ISCSI_PARAM_LU_RESET_TMO,
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ISCSI_PARAM_HOST_RESET_TMO,
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ISCSI_PARAM_PING_TMO,
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ISCSI_PARAM_RECV_TMO,
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ISCSI_PARAM_IFACE_NAME,
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ISCSI_PARAM_ISID,
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ISCSI_PARAM_INITIATOR_NAME,
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ISCSI_PARAM_TGT_RESET_TMO,
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ISCSI_PARAM_TARGET_ALIAS,
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ISCSI_PARAM_CHAP_IN_IDX,
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ISCSI_PARAM_CHAP_OUT_IDX,
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/* must always be last */
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ISCSI_PARAM_MAX,
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};
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/* iSCSI HBA params */
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enum iscsi_host_param {
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ISCSI_HOST_PARAM_HWADDRESS,
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ISCSI_HOST_PARAM_INITIATOR_NAME,
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ISCSI_HOST_PARAM_NETDEV_NAME,
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ISCSI_HOST_PARAM_IPADDRESS,
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ISCSI_HOST_PARAM_PORT_STATE,
|
|
ISCSI_HOST_PARAM_PORT_SPEED,
|
|
ISCSI_HOST_PARAM_MAX,
|
|
};
|
|
|
|
/* iSCSI port Speed */
|
|
enum iscsi_port_speed {
|
|
ISCSI_PORT_SPEED_UNKNOWN = 0x1,
|
|
ISCSI_PORT_SPEED_10MBPS = 0x2,
|
|
ISCSI_PORT_SPEED_100MBPS = 0x4,
|
|
ISCSI_PORT_SPEED_1GBPS = 0x8,
|
|
ISCSI_PORT_SPEED_10GBPS = 0x10,
|
|
};
|
|
|
|
/* iSCSI port state */
|
|
enum iscsi_port_state {
|
|
ISCSI_PORT_STATE_DOWN = 0x1,
|
|
ISCSI_PORT_STATE_UP = 0x2,
|
|
};
|
|
|
|
/* iSCSI PING status/error code */
|
|
enum iscsi_ping_status_code {
|
|
ISCSI_PING_SUCCESS = 0,
|
|
ISCSI_PING_FW_DISABLED = 0x1,
|
|
ISCSI_PING_IPADDR_INVALID = 0x2,
|
|
ISCSI_PING_LINKLOCAL_IPV6_ADDR_INVALID = 0x3,
|
|
ISCSI_PING_TIMEOUT = 0x4,
|
|
ISCSI_PING_INVALID_DEST_ADDR = 0x5,
|
|
ISCSI_PING_OVERSIZE_PACKET = 0x6,
|
|
ISCSI_PING_ICMP_ERROR = 0x7,
|
|
ISCSI_PING_MAX_REQ_EXCEEDED = 0x8,
|
|
ISCSI_PING_NO_ARP_RECEIVED = 0x9,
|
|
};
|
|
|
|
#define iscsi_ptr(_handle) ((void*)(unsigned long)_handle)
|
|
#define iscsi_handle(_ptr) ((uint64_t)(unsigned long)_ptr)
|
|
|
|
/*
|
|
* These flags presents iSCSI Data-Path capabilities.
|
|
*/
|
|
#define CAP_RECOVERY_L0 0x1
|
|
#define CAP_RECOVERY_L1 0x2
|
|
#define CAP_RECOVERY_L2 0x4
|
|
#define CAP_MULTI_R2T 0x8
|
|
#define CAP_HDRDGST 0x10
|
|
#define CAP_DATADGST 0x20
|
|
#define CAP_MULTI_CONN 0x40
|
|
#define CAP_TEXT_NEGO 0x80
|
|
#define CAP_MARKERS 0x100
|
|
#define CAP_FW_DB 0x200
|
|
#define CAP_SENDTARGETS_OFFLOAD 0x400 /* offload discovery process */
|
|
#define CAP_DATA_PATH_OFFLOAD 0x800 /* offload entire IO path */
|
|
#define CAP_DIGEST_OFFLOAD 0x1000 /* offload hdr and data digests */
|
|
#define CAP_PADDING_OFFLOAD 0x2000 /* offload padding insertion, removal,
|
|
and verification */
|
|
#define CAP_LOGIN_OFFLOAD 0x4000 /* offload session login */
|
|
|
|
/*
|
|
* These flags describes reason of stop_conn() call
|
|
*/
|
|
#define STOP_CONN_TERM 0x1
|
|
#define STOP_CONN_SUSPEND 0x2
|
|
#define STOP_CONN_RECOVER 0x3
|
|
|
|
#define ISCSI_STATS_CUSTOM_MAX 32
|
|
#define ISCSI_STATS_CUSTOM_DESC_MAX 64
|
|
struct iscsi_stats_custom {
|
|
char desc[ISCSI_STATS_CUSTOM_DESC_MAX];
|
|
uint64_t value;
|
|
};
|
|
|
|
/*
|
|
* struct iscsi_stats - iSCSI Statistics (iSCSI MIB)
|
|
*
|
|
* Note: this structure contains counters collected on per-connection basis.
|
|
*/
|
|
struct iscsi_stats {
|
|
/* octets */
|
|
uint64_t txdata_octets;
|
|
uint64_t rxdata_octets;
|
|
|
|
/* xmit pdus */
|
|
uint32_t noptx_pdus;
|
|
uint32_t scsicmd_pdus;
|
|
uint32_t tmfcmd_pdus;
|
|
uint32_t login_pdus;
|
|
uint32_t text_pdus;
|
|
uint32_t dataout_pdus;
|
|
uint32_t logout_pdus;
|
|
uint32_t snack_pdus;
|
|
|
|
/* recv pdus */
|
|
uint32_t noprx_pdus;
|
|
uint32_t scsirsp_pdus;
|
|
uint32_t tmfrsp_pdus;
|
|
uint32_t textrsp_pdus;
|
|
uint32_t datain_pdus;
|
|
uint32_t logoutrsp_pdus;
|
|
uint32_t r2t_pdus;
|
|
uint32_t async_pdus;
|
|
uint32_t rjt_pdus;
|
|
|
|
/* errors */
|
|
uint32_t digest_err;
|
|
uint32_t timeout_err;
|
|
|
|
/*
|
|
* iSCSI Custom Statistics support, i.e. Transport could
|
|
* extend existing MIB statistics with its own specific statistics
|
|
* up to ISCSI_STATS_CUSTOM_MAX
|
|
*/
|
|
uint32_t custom_length;
|
|
struct iscsi_stats_custom custom[0]
|
|
__attribute__ ((aligned (sizeof(uint64_t))));
|
|
};
|
|
|
|
enum chap_type_e {
|
|
CHAP_TYPE_OUT,
|
|
CHAP_TYPE_IN,
|
|
};
|
|
|
|
#define ISCSI_CHAP_AUTH_NAME_MAX_LEN 256
|
|
#define ISCSI_CHAP_AUTH_SECRET_MAX_LEN 256
|
|
struct iscsi_chap_rec {
|
|
uint16_t chap_tbl_idx;
|
|
enum chap_type_e chap_type;
|
|
char username[ISCSI_CHAP_AUTH_NAME_MAX_LEN];
|
|
uint8_t password[ISCSI_CHAP_AUTH_SECRET_MAX_LEN];
|
|
uint8_t password_length;
|
|
};
|
|
|
|
#endif
|