249 lines
6.3 KiB
C
249 lines
6.3 KiB
C
/*
|
|
* iSCSI User/Kernel Shares (Defines, Constants, Protocol definitions, etc)
|
|
*
|
|
* Copyright (C) 2005 Dmitry Yusupov
|
|
* Copyright (C) 2005 Alex Aizman
|
|
* maintained by open-iscsi@googlegroups.com
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published
|
|
* by the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* See the file COPYING included with this distribution for more details.
|
|
*/
|
|
|
|
#ifndef ISCSI_IF_H
|
|
#define ISCSI_IF_H
|
|
|
|
#include <scsi/iscsi_proto.h>
|
|
|
|
#define UEVENT_BASE 10
|
|
#define KEVENT_BASE 100
|
|
#define ISCSI_ERR_BASE 1000
|
|
|
|
enum iscsi_uevent_e {
|
|
ISCSI_UEVENT_UNKNOWN = 0,
|
|
|
|
/* down events */
|
|
ISCSI_UEVENT_CREATE_SESSION = UEVENT_BASE + 1,
|
|
ISCSI_UEVENT_DESTROY_SESSION = UEVENT_BASE + 2,
|
|
ISCSI_UEVENT_CREATE_CONN = UEVENT_BASE + 3,
|
|
ISCSI_UEVENT_DESTROY_CONN = UEVENT_BASE + 4,
|
|
ISCSI_UEVENT_BIND_CONN = UEVENT_BASE + 5,
|
|
ISCSI_UEVENT_SET_PARAM = UEVENT_BASE + 6,
|
|
ISCSI_UEVENT_START_CONN = UEVENT_BASE + 7,
|
|
ISCSI_UEVENT_STOP_CONN = UEVENT_BASE + 8,
|
|
ISCSI_UEVENT_SEND_PDU = UEVENT_BASE + 9,
|
|
ISCSI_UEVENT_GET_STATS = UEVENT_BASE + 10,
|
|
ISCSI_UEVENT_GET_PARAM = UEVENT_BASE + 11,
|
|
|
|
/* up events */
|
|
ISCSI_KEVENT_RECV_PDU = KEVENT_BASE + 1,
|
|
ISCSI_KEVENT_CONN_ERROR = KEVENT_BASE + 2,
|
|
ISCSI_KEVENT_IF_ERROR = KEVENT_BASE + 3,
|
|
};
|
|
|
|
struct iscsi_uevent {
|
|
uint32_t type; /* k/u events type */
|
|
uint32_t iferror; /* carries interface or resource errors */
|
|
uint64_t transport_handle;
|
|
|
|
union {
|
|
/* messages u -> k */
|
|
struct msg_create_session {
|
|
uint32_t initial_cmdsn;
|
|
} c_session;
|
|
struct msg_destroy_session {
|
|
uint64_t session_handle;
|
|
uint32_t sid;
|
|
} d_session;
|
|
struct msg_create_conn {
|
|
uint64_t session_handle;
|
|
uint32_t cid;
|
|
uint32_t sid;
|
|
} c_conn;
|
|
struct msg_bind_conn {
|
|
uint64_t session_handle;
|
|
uint64_t conn_handle;
|
|
uint32_t transport_fd;
|
|
uint32_t is_leading;
|
|
} b_conn;
|
|
struct msg_destroy_conn {
|
|
uint64_t conn_handle;
|
|
uint32_t cid;
|
|
} d_conn;
|
|
struct msg_send_pdu {
|
|
uint32_t hdr_size;
|
|
uint32_t data_size;
|
|
uint64_t conn_handle;
|
|
} send_pdu;
|
|
struct msg_set_param {
|
|
uint64_t conn_handle;
|
|
uint32_t param; /* enum iscsi_param */
|
|
uint32_t value;
|
|
} set_param;
|
|
struct msg_start_conn {
|
|
uint64_t conn_handle;
|
|
} start_conn;
|
|
struct msg_stop_conn {
|
|
uint64_t conn_handle;
|
|
uint32_t flag;
|
|
} stop_conn;
|
|
struct msg_get_stats {
|
|
uint64_t conn_handle;
|
|
} get_stats;
|
|
} u;
|
|
union {
|
|
/* messages k -> u */
|
|
uint64_t handle;
|
|
int retcode;
|
|
struct msg_create_session_ret {
|
|
uint64_t session_handle;
|
|
uint32_t sid;
|
|
} c_session_ret;
|
|
struct msg_recv_req {
|
|
uint64_t recv_handle;
|
|
uint64_t conn_handle;
|
|
} recv_req;
|
|
struct msg_conn_error {
|
|
uint64_t conn_handle;
|
|
uint32_t error; /* enum iscsi_err */
|
|
} connerror;
|
|
} r;
|
|
} __attribute__ ((aligned (sizeof(uint64_t))));
|
|
|
|
/*
|
|
* Common error codes
|
|
*/
|
|
enum iscsi_err {
|
|
ISCSI_OK = 0,
|
|
|
|
ISCSI_ERR_DATASN = ISCSI_ERR_BASE + 1,
|
|
ISCSI_ERR_DATA_OFFSET = ISCSI_ERR_BASE + 2,
|
|
ISCSI_ERR_MAX_CMDSN = ISCSI_ERR_BASE + 3,
|
|
ISCSI_ERR_EXP_CMDSN = ISCSI_ERR_BASE + 4,
|
|
ISCSI_ERR_BAD_OPCODE = ISCSI_ERR_BASE + 5,
|
|
ISCSI_ERR_DATALEN = ISCSI_ERR_BASE + 6,
|
|
ISCSI_ERR_AHSLEN = ISCSI_ERR_BASE + 7,
|
|
ISCSI_ERR_PROTO = ISCSI_ERR_BASE + 8,
|
|
ISCSI_ERR_LUN = ISCSI_ERR_BASE + 9,
|
|
ISCSI_ERR_BAD_ITT = ISCSI_ERR_BASE + 10,
|
|
ISCSI_ERR_CONN_FAILED = ISCSI_ERR_BASE + 11,
|
|
ISCSI_ERR_R2TSN = ISCSI_ERR_BASE + 12,
|
|
ISCSI_ERR_SESSION_FAILED = ISCSI_ERR_BASE + 13,
|
|
ISCSI_ERR_HDR_DGST = ISCSI_ERR_BASE + 14,
|
|
ISCSI_ERR_DATA_DGST = ISCSI_ERR_BASE + 15,
|
|
ISCSI_ERR_PARAM_NOT_FOUND = ISCSI_ERR_BASE + 16
|
|
};
|
|
|
|
/*
|
|
* iSCSI Parameters (RFC3720)
|
|
*/
|
|
enum iscsi_param {
|
|
ISCSI_PARAM_MAX_RECV_DLENGTH = 0,
|
|
ISCSI_PARAM_MAX_XMIT_DLENGTH = 1,
|
|
ISCSI_PARAM_HDRDGST_EN = 2,
|
|
ISCSI_PARAM_DATADGST_EN = 3,
|
|
ISCSI_PARAM_INITIAL_R2T_EN = 4,
|
|
ISCSI_PARAM_MAX_R2T = 5,
|
|
ISCSI_PARAM_IMM_DATA_EN = 6,
|
|
ISCSI_PARAM_FIRST_BURST = 7,
|
|
ISCSI_PARAM_MAX_BURST = 8,
|
|
ISCSI_PARAM_PDU_INORDER_EN = 9,
|
|
ISCSI_PARAM_DATASEQ_INORDER_EN = 10,
|
|
ISCSI_PARAM_ERL = 11,
|
|
ISCSI_PARAM_IFMARKER_EN = 12,
|
|
ISCSI_PARAM_OFMARKER_EN = 13,
|
|
};
|
|
#define ISCSI_PARAM_MAX 14
|
|
|
|
#define iscsi_ptr(_handle) ((void*)(unsigned long)_handle)
|
|
#define iscsi_handle(_ptr) ((uint64_t)(unsigned long)_ptr)
|
|
#define hostdata_session(_hostdata) (iscsi_ptr(*(unsigned long *)_hostdata))
|
|
|
|
/**
|
|
* iscsi_hostdata - get LLD hostdata from scsi_host
|
|
* @_hostdata: pointer to scsi host's hostdata
|
|
**/
|
|
#define iscsi_hostdata(_hostdata) ((void*)_hostdata + sizeof(unsigned long))
|
|
|
|
/*
|
|
* 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
|
|
|
|
/*
|
|
* 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))));
|
|
};
|
|
|
|
#endif
|