/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. */ #ifndef _ISCSI_PROTOCOL_H #define _ISCSI_PROTOCOL_H #ifdef __cplusplus extern "C" { #endif /* * iSCSI connection daemon * Copyright (C) 2001 Cisco Systems, Inc. * All rights reserved. * * This file sets up definitions of messages and constants used by the * iSCSI protocol. * */ #include <sys/types.h> #include <sys/isa_defs.h> #define ISCSI_MAX_NAME_LEN 224 #define ISCSI_MAX_C_USER_LEN 512 /* iSCSI listen port for incoming connections */ #define ISCSI_LISTEN_PORT 3260 /* assumes a pointer to a 3-byte array */ #define ntoh24(p) (((p)[0] << 16) | ((p)[1] << 8) | ((p)[2])) /* assumes a pointer to a 3 byte array, and an integer value */ #define hton24(p, v) {\ p[0] = (((v) >> 16) & 0xFF); \ p[1] = (((v) >> 8) & 0xFF); \ p[2] = ((v) & 0xFF); \ } /* for Login min, max, active version fields */ #define ISCSI_MIN_VERSION 0x00 #define ISCSI_DRAFT8_VERSION 0x02 #define ISCSI_DRAFT20_VERSION 0x00 #define ISCSI_MAX_VERSION 0x02 /* Min. and Max. length of a PDU we can support */ #define ISCSI_MIN_PDU_LENGTH (8 << 9) /* 4KB */ #define ISCSI_MAX_PDU_LENGTH (0xffffffff) /* Huge */ /* Padding word length */ #define ISCSI_PAD_WORD_LEN 4 /* Max. number of Key=Value pairs in a text message */ #define ISCSI_MAX_KEY_VALUE_PAIRS 8192 /* text separtor between key value pairs exhanged in login */ #define ISCSI_TEXT_SEPARATOR '=' /* reserved text constants for Text Mode Negotiation */ #define ISCSI_TEXT_NONE "None" #define ISCSI_TEXT_REJECT "Reject" #define ISCSI_TEXT_IRRELEVANT "Irrelevant" #define ISCSI_TEXT_NOTUNDERSTOOD "NotUnderstood" /* Reserved value for initiator/target task tag */ #define ISCSI_RSVD_TASK_TAG 0xffffffff /* maximum length for text keys/values */ #define KEY_MAXLEN 64 #define VALUE_MAXLEN 255 #define TARGET_NAME_MAXLEN VALUE_MAXLEN /* most PDU types have a final bit */ #define ISCSI_FLAG_FINAL 0x80 /* * Strings used during SendTargets requests */ #define ISCSI_TEXT_SEPARATOR '=' #define TARGETNAME "TargetName=" #define TARGETADDRESS "TargetAddress=" /* iSCSI Template Message Header */ typedef struct _iscsi_hdr { uint8_t opcode; uint8_t flags; /* Final bit */ uint8_t rsvd2[2]; uint8_t hlength; /* AHSs total length */ uint8_t dlength[3]; /* Data length */ uint8_t lun[8]; uint32_t itt; /* Initiator Task Tag */ uint8_t rsvd3[8]; uint32_t expstatsn; uint8_t other[16]; } iscsi_hdr_t; typedef struct _iscsi_rsp_hdr { uint8_t opcode; uint8_t flags; uint8_t rsvd1[3]; uint8_t dlength[3]; uint8_t rsvd2[8]; uint32_t itt; uint8_t rsvd3[4]; uint32_t statsn; uint32_t expcmdsn; uint32_t maxcmdsn; uint8_t rsvd4[12]; } iscsi_rsp_hdr_t; /* Opcode encoding bits */ #define ISCSI_OP_RETRY 0x80 #define ISCSI_OP_IMMEDIATE 0x40 #define ISCSI_OPCODE_MASK 0x3F /* Client to Server Message Opcode values */ #define ISCSI_OP_NOOP_OUT 0x00 #define ISCSI_OP_SCSI_CMD 0x01 #define ISCSI_OP_SCSI_TASK_MGT_MSG 0x02 #define ISCSI_OP_LOGIN_CMD 0x03 #define ISCSI_OP_TEXT_CMD 0x04 #define ISCSI_OP_SCSI_DATA 0x05 #define ISCSI_OP_LOGOUT_CMD 0x06 #define ISCSI_OP_SNACK_CMD 0x10 /* Server to Client Message Opcode values */ #define ISCSI_OP_NOOP_IN 0x20 #define ISCSI_OP_SCSI_RSP 0x21 #define ISCSI_OP_SCSI_TASK_MGT_RSP 0x22 #define ISCSI_OP_LOGIN_RSP 0x23 #define ISCSI_OP_TEXT_RSP 0x24 #define ISCSI_OP_SCSI_DATA_RSP 0x25 #define ISCSI_OP_LOGOUT_RSP 0x26 #define ISCSI_OP_RTT_RSP 0x31 #define ISCSI_OP_ASYNC_EVENT 0x32 #define ISCSI_OP_REJECT_MSG 0x3f /* SCSI Command Header */ typedef struct _iscsi_scsi_cmd_hdr { uint8_t opcode; uint8_t flags; uint8_t rsvd[2]; uint8_t hlength; uint8_t dlength[3]; uint8_t lun[8]; uint32_t itt; /* Initiator Task Tag */ uint32_t data_length; uint32_t cmdsn; uint32_t expstatsn; uint8_t scb[16]; /* SCSI Command Block */ /* * Additional Data (Command Dependent) */ } iscsi_scsi_cmd_hdr_t; /* Command PDU flags */ #define ISCSI_FLAG_CMD_READ 0x40 #define ISCSI_FLAG_CMD_WRITE 0x20 #define ISCSI_FLAG_CMD_ATTR_MASK 0x07 /* 3 bits */ /* SCSI Command Attribute values */ #define ISCSI_ATTR_UNTAGGED 0 #define ISCSI_ATTR_SIMPLE 1 #define ISCSI_ATTR_ORDERED 2 #define ISCSI_ATTR_HEAD_OF_QUEUE 3 #define ISCSI_ATTR_ACA 4 /* SCSI Response Header */ typedef struct _iscsi_scsi_rsp_hdr { uint8_t opcode; uint8_t flags; uint8_t response; uint8_t cmd_status; uint8_t hlength; uint8_t dlength[3]; uint8_t rsvd[8]; uint32_t itt; /* Initiator Task Tag */ uint32_t rsvd1; uint32_t statsn; uint32_t expcmdsn; uint32_t maxcmdsn; uint32_t expdatasn; uint32_t bi_residual_count; uint32_t residual_count; /* * Response or Sense Data (optional) */ } iscsi_scsi_rsp_hdr_t; /* 10.2.2.3 - Extended CDB Additional Header Segment */ typedef struct _iscsi_addl_hdr { iscsi_scsi_cmd_hdr_t ahs_isch; uint8_t ahs_hlen_hi; uint8_t ahs_hlen_lo; uint8_t ahs_key; uint8_t ahs_resv; uint8_t ahs_extscb[4]; } iscsi_addl_hdr_t; /* Command Response PDU flags */ #define ISCSI_FLAG_CMD_BIDI_OVERFLOW 0x10 #define ISCSI_FLAG_CMD_BIDI_UNDERFLOW 0x08 #define ISCSI_FLAG_CMD_OVERFLOW 0x04 #define ISCSI_FLAG_CMD_UNDERFLOW 0x02 /* iSCSI Status values. Valid if Rsp Selector bit is not set */ #define ISCSI_STATUS_CMD_COMPLETED 0 #define ISCSI_STATUS_TARGET_FAILURE 1 #define ISCSI_STATUS_SUBSYS_FAILURE 2 /* Asynchronous Event Header */ typedef struct _iscsi_async_evt_hdr { uint8_t opcode; uint8_t flags; uint8_t rsvd2[2]; uint8_t rsvd3; uint8_t dlength[3]; uint8_t lun[8]; uint8_t rsvd4[8]; uint32_t statsn; uint32_t expcmdsn; uint32_t maxcmdsn; uint8_t async_event; uint8_t async_vcode; uint16_t param1; uint16_t param2; uint16_t param3; uint8_t rsvd5[4]; } iscsi_async_evt_hdr_t; /* iSCSI Event Indicator values */ #define ISCSI_ASYNC_EVENT_SCSI_EVENT 0 #define ISCSI_ASYNC_EVENT_REQUEST_LOGOUT 1 #define ISCSI_ASYNC_EVENT_DROPPING_CONNECTION 2 #define ISCSI_ASYNC_EVENT_DROPPING_ALL_CONNECTIONS 3 #define ISCSI_ASYNC_EVENT_PARAM_NEGOTIATION 4 #define ISCSI_ASYNC_EVENT_VENDOR_SPECIFIC 255 /* NOP-Out Message */ typedef struct _iscsi_nop_out_hdr { uint8_t opcode; uint8_t flags; uint16_t rsvd2; uint8_t rsvd3; uint8_t dlength[3]; uint8_t lun[8]; uint32_t itt; /* Initiator Task Tag */ uint32_t ttt; /* Target Transfer Tag */ uint32_t cmdsn; uint32_t expstatsn; uint8_t rsvd4[16]; } iscsi_nop_out_hdr_t; /* NOP-In Message */ typedef struct _iscsi_nop_in_hdr { uint8_t opcode; uint8_t flags; uint16_t rsvd2; uint8_t rsvd3; uint8_t dlength[3]; uint8_t lun[8]; uint32_t itt; /* Initiator Task Tag */ uint32_t ttt; /* Target Transfer Tag */ uint32_t statsn; uint32_t expcmdsn; uint32_t maxcmdsn; uint8_t rsvd4[12]; } iscsi_nop_in_hdr_t; /* SCSI Task Management Message Header */ typedef struct _iscsi_scsi_task_mgt_hdr { uint8_t opcode; uint8_t function; uint8_t rsvd1[2]; uint8_t hlength; uint8_t dlength[3]; uint8_t lun[8]; uint32_t itt; /* Initiator Task Tag */ uint32_t rtt; /* Reference Task Tag */ uint32_t cmdsn; uint32_t expstatsn; uint32_t refcmdsn; uint32_t expdatasn; uint8_t rsvd2[8]; } iscsi_scsi_task_mgt_hdr_t; #define ISCSI_FLAG_TASK_MGMT_FUNCTION_MASK 0x7F /* Function values */ #define ISCSI_TM_FUNC_ABORT_TASK 1 #define ISCSI_TM_FUNC_ABORT_TASK_SET 2 #define ISCSI_TM_FUNC_CLEAR_ACA 3 #define ISCSI_TM_FUNC_CLEAR_TASK_SET 4 #define ISCSI_TM_FUNC_LOGICAL_UNIT_RESET 5 #define ISCSI_TM_FUNC_TARGET_WARM_RESET 6 #define ISCSI_TM_FUNC_TARGET_COLD_RESET 7 #define ISCSI_TM_FUNC_TASK_REASSIGN 8 /* SCSI Task Management Response Header */ typedef struct _iscsi_scsi_task_mgt_rsp_hdr { uint8_t opcode; uint8_t flags; uint8_t response; /* see Response values below */ uint8_t qualifier; uint8_t hlength; uint8_t dlength[3]; uint8_t rsvd2[8]; uint32_t itt; /* Initiator Task Tag */ uint32_t rtt; /* Reference Task Tag */ uint32_t statsn; uint32_t expcmdsn; uint32_t maxcmdsn; uint8_t rsvd3[12]; } iscsi_scsi_task_mgt_rsp_hdr_t; /* Response values */ #define SCSI_TCP_TM_RESP_COMPLETE 0x00 #define SCSI_TCP_TM_RESP_NO_TASK 0x01 #define SCSI_TCP_TM_RESP_NO_LUN 0x02 #define SCSI_TCP_TM_RESP_TASK_ALLEGIANT 0x03 #define SCSI_TCP_TM_RESP_NO_ALLG_REASSN 0x04 #define SCSI_TCP_TM_RESP_FUNC_NOT_SUPP 0x05 #define SCSI_TCP_TM_RESP_FUNC_AUTH_FAIL 0x06 #define SCSI_TCP_TM_RESP_REJECTED 0xff /* * Maintained for backward compatibility. */ #define SCSI_TCP_TM_RESP_NO_FAILOVER SCSI_TCP_TM_RESP_NO_ALLG_REASSN #define SCSI_TCP_TM_RESP_IN_PRGRESS SCSI_TCP_TM_RESP_FUNC_NOT_SUPP /* Ready To Transfer Header */ typedef struct _iscsi_rtt_hdr { uint8_t opcode; uint8_t flags; uint8_t rsvd2[2]; uint8_t rsvd3[12]; uint32_t itt; /* Initiator Task Tag */ uint32_t ttt; /* Target Transfer Tag */ uint32_t statsn; uint32_t expcmdsn; uint32_t maxcmdsn; uint32_t rttsn; uint32_t data_offset; uint32_t data_length; } iscsi_rtt_hdr_t; /* SCSI Data Hdr */ typedef struct _iscsi_data_hdr { uint8_t opcode; uint8_t flags; uint8_t rsvd2[2]; uint8_t rsvd3; uint8_t dlength[3]; uint8_t lun[8]; uint32_t itt; uint32_t ttt; uint32_t rsvd4; uint32_t expstatsn; uint32_t rsvd5; uint32_t datasn; uint32_t offset; uint32_t rsvd6; /* * Payload */ } iscsi_data_hdr_t; /* SCSI Data Response Hdr */ typedef struct _iscsi_data_rsp_hdr { uint8_t opcode; uint8_t flags; uint8_t rsvd2; uint8_t cmd_status; uint8_t hlength; uint8_t dlength[3]; uint8_t lun[8]; uint32_t itt; uint32_t ttt; uint32_t statsn; uint32_t expcmdsn; uint32_t maxcmdsn; uint32_t datasn; uint32_t offset; uint32_t residual_count; } iscsi_data_rsp_hdr_t; /* Data Response PDU flags */ #define ISCSI_FLAG_DATA_ACK 0x40 #define ISCSI_FLAG_DATA_OVERFLOW 0x04 #define ISCSI_FLAG_DATA_UNDERFLOW 0x02 #define ISCSI_FLAG_DATA_STATUS 0x01 /* Text Header */ typedef struct _iscsi_text_hdr { uint8_t opcode; uint8_t flags; uint8_t rsvd2[2]; uint8_t hlength; uint8_t dlength[3]; uint8_t rsvd4[8]; uint32_t itt; uint32_t ttt; uint32_t cmdsn; uint32_t expstatsn; uint8_t rsvd5[16]; /* * Text - key=value pairs */ } iscsi_text_hdr_t; #define ISCSI_FLAG_TEXT_CONTINUE 0x40 /* Text Response Header */ typedef struct _iscsi_text_rsp_hdr { uint8_t opcode; uint8_t flags; uint8_t rsvd2[2]; uint8_t hlength; uint8_t dlength[3]; uint8_t rsvd4[8]; uint32_t itt; uint32_t ttt; uint32_t statsn; uint32_t expcmdsn; uint32_t maxcmdsn; uint8_t rsvd5[12]; /* * Text Response - key:value pairs */ } iscsi_text_rsp_hdr_t; #define ISCSI_ISID_LEN 6 /* Login Header */ typedef struct _iscsi_login_hdr { uint8_t opcode; uint8_t flags; uint8_t max_version; /* Max. version supported */ uint8_t min_version; /* Min. version supported */ uint8_t hlength; uint8_t dlength[3]; uint8_t isid[ISCSI_ISID_LEN]; /* Initiator Session ID */ uint16_t tsid; /* Target Session ID */ uint32_t itt; /* Initiator Task Tag */ uint16_t cid; uint16_t rsvd3; uint32_t cmdsn; uint32_t expstatsn; uint8_t rsvd5[16]; } iscsi_login_hdr_t; /* Login PDU flags */ #define ISCSI_FLAG_LOGIN_TRANSIT 0x80 #define ISCSI_FLAG_LOGIN_CONTINUE 0x40 #define ISCSI_FLAG_LOGIN_CURRENT_STAGE_MASK 0x0C /* 2 bits */ #define ISCSI_FLAG_LOGIN_NEXT_STAGE_MASK 0x03 /* 2 bits */ #define ISCSI_LOGIN_CURRENT_STAGE(flags) \ ((flags & ISCSI_FLAG_LOGIN_CURRENT_STAGE_MASK) >> 2) #define ISCSI_LOGIN_NEXT_STAGE(flags) \ (flags & ISCSI_FLAG_LOGIN_NEXT_STAGE_MASK) /* Login Response Header */ typedef struct _iscsi_login_rsp_hdr { uint8_t opcode; uint8_t flags; uint8_t max_version; /* Max. version supported */ uint8_t active_version; /* Active version */ uint8_t hlength; uint8_t dlength[3]; uint8_t isid[ISCSI_ISID_LEN]; /* Initiator Session ID */ uint16_t tsid; /* Target Session ID */ uint32_t itt; /* Initiator Task Tag */ uint32_t rsvd3; uint32_t statsn; uint32_t expcmdsn; uint32_t maxcmdsn; uint8_t status_class; /* see Login RSP ststus classes below */ uint8_t status_detail; /* see Login RSP Status details below */ uint8_t rsvd4[10]; } iscsi_login_rsp_hdr_t; /* Login stage (phase) codes for CSG, NSG */ #define ISCSI_SECURITY_NEGOTIATION_STAGE 0 #define ISCSI_OP_PARMS_NEGOTIATION_STAGE 1 #define ISCSI_FULL_FEATURE_PHASE 3 /* Login Status response classes */ #define ISCSI_STATUS_CLASS_SUCCESS 0x00 #define ISCSI_STATUS_CLASS_REDIRECT 0x01 #define ISCSI_STATUS_CLASS_INITIATOR_ERR 0x02 #define ISCSI_STATUS_CLASS_TARGET_ERR 0x03 /* Login Status response detail codes */ /* Class-0 (Success) */ #define ISCSI_LOGIN_STATUS_ACCEPT 0x00 /* Class-1 (Redirection) */ #define ISCSI_LOGIN_STATUS_TGT_MOVED_TEMP 0x01 #define ISCSI_LOGIN_STATUS_TGT_MOVED_PERM 0x02 /* Class-2 (Initiator Error) */ #define ISCSI_LOGIN_STATUS_INIT_ERR 0x00 #define ISCSI_LOGIN_STATUS_AUTH_FAILED 0x01 #define ISCSI_LOGIN_STATUS_TGT_FORBIDDEN 0x02 #define ISCSI_LOGIN_STATUS_TGT_NOT_FOUND 0x03 #define ISCSI_LOGIN_STATUS_TGT_REMOVED 0x04 #define ISCSI_LOGIN_STATUS_NO_VERSION 0x05 #define ISCSI_LOGIN_STATUS_ISID_ERROR 0x06 #define ISCSI_LOGIN_STATUS_MISSING_FIELDS 0x07 #define ISCSI_LOGIN_STATUS_CONN_ADD_FAILED 0x08 #define ISCSI_LOGIN_STATUS_NO_SESSION_TYPE 0x09 #define ISCSI_LOGIN_STATUS_NO_SESSION 0x0a #define ISCSI_LOGIN_STATUS_INVALID_REQUEST 0x0b /* Class-3 (Target Error) */ #define ISCSI_LOGIN_STATUS_TARGET_ERROR 0x00 #define ISCSI_LOGIN_STATUS_SVC_UNAVAILABLE 0x01 #define ISCSI_LOGIN_STATUS_NO_RESOURCES 0x02 /* Logout Header */ typedef struct _iscsi_logout_hdr { uint8_t opcode; uint8_t flags; uint8_t rsvd1[2]; uint8_t hlength; uint8_t dlength[3]; uint8_t rsvd2[8]; uint32_t itt; /* Initiator Task Tag */ uint16_t cid; uint8_t rsvd3[2]; uint32_t cmdsn; uint32_t expstatsn; uint8_t rsvd4[16]; } iscsi_logout_hdr_t; /* Logout PDU flags */ #define ISCSI_FLAG_LOGOUT_REASON_MASK 0x7F /* logout reason_code values */ #define ISCSI_LOGOUT_REASON_CLOSE_SESSION 0 #define ISCSI_LOGOUT_REASON_CLOSE_CONNECTION 1 #define ISCSI_LOGOUT_REASON_RECOVERY 2 #define ISCSI_LOGOUT_REASON_AEN_REQUEST 3 /* Logout Response Header */ typedef struct _iscsi_logout_rsp_hdr { uint8_t opcode; uint8_t flags; uint8_t response; /* see Logout response values below */ uint8_t rsvd2; uint8_t hlength; uint8_t dlength[3]; uint8_t rsvd3[8]; uint32_t itt; /* Initiator Task Tag */ uint32_t rsvd4; uint32_t statsn; uint32_t expcmdsn; uint32_t maxcmdsn; uint32_t rsvd5; uint16_t t2wait; uint16_t t2retain; uint32_t rsvd6; } iscsi_logout_rsp_hdr_t; /* logout response status values */ #define ISCSI_LOGOUT_SUCCESS 0 #define ISCSI_LOGOUT_CID_NOT_FOUND 1 #define ISCSI_LOGOUT_RECOVERY_UNSUPPORTED 2 #define ISCSI_LOGOUT_CLEANUP_FAILED 3 /* SNACK Header */ typedef struct _iscsi_snack_hdr { uint8_t opcode; uint8_t flags; uint8_t rsvd2[14]; uint32_t itt; uint32_t begrun; uint32_t runlength; uint32_t expstatsn; uint32_t rsvd3; uint32_t expdatasn; uint8_t rsvd6[8]; } iscsi_snack_hdr_t; /* SNACK PDU flags */ #define ISCSI_FLAG_SNACK_TYPE_MASK 0x0F /* 4 bits */ /* Reject Message Header */ typedef struct _iscsi_reject_rsp_hdr { uint8_t opcode; uint8_t flags; uint8_t reason; uint8_t rsvd2; uint8_t rsvd3; uint8_t dlength[3]; uint8_t rsvd4[8]; uint8_t must_be_ff[4]; uint8_t rsvd4a[4]; uint32_t statsn; uint32_t expcmdsn; uint32_t maxcmdsn; uint32_t datasn; uint8_t rsvd5[8]; /* * Text - Rejected hdr */ } iscsi_reject_rsp_hdr_t; /* Reason for Reject */ #define ISCSI_REJECT_CMD_BEFORE_LOGIN 1 #define ISCSI_REJECT_DATA_DIGEST_ERROR 2 #define ISCSI_REJECT_SNACK_REJECT 3 #define ISCSI_REJECT_PROTOCOL_ERROR 4 #define ISCSI_REJECT_CMD_NOT_SUPPORTED 5 #define ISCSI_REJECT_IMM_CMD_REJECT 6 #define ISCSI_REJECT_TASK_IN_PROGRESS 7 #define ISCSI_REJECT_INVALID_DATA_ACK 8 #define ISCSI_REJECT_INVALID_PDU_FIELD 9 #define ISCSI_REJECT_LONG_OPERATION_REJECT 10 #define ISCSI_REJECT_NEGOTIATION_RESET 11 #define ISCSI_REJECT_WAITING_FOR_LOGOUT 12 /* Defaults as defined by the iSCSI specification */ #define ISCSI_DEFAULT_IMMEDIATE_DATA TRUE #define ISCSI_DEFAULT_INITIALR2T TRUE #define ISCSI_DEFAULT_FIRST_BURST_LENGTH (64 * 1024) /* 64kbytes */ #define ISCSI_DEFAULT_MAX_BURST_LENGTH (256 * 1024) /* 256kbytes */ #define ISCSI_DEFAULT_DATA_PDU_IN_ORDER TRUE #define ISCSI_DEFAULT_DATA_SEQUENCE_IN_ORDER TRUE #define ISCSI_DEFAULT_TIME_TO_WAIT 2 /* 2 seconds */ #define ISCSI_DEFAULT_TIME_TO_RETAIN 20 /* 20 seconds */ #define ISCSI_DEFAULT_HEADER_DIGEST ISCSI_DIGEST_NONE #define ISCSI_DEFAULT_DATA_DIGEST ISCSI_DIGEST_NONE #define ISCSI_DEFAULT_MAX_RECV_SEG_LEN (8 * 1024) #define ISCSI_DEFAULT_MAX_XMIT_SEG_LEN (8 * 1024) #define ISCSI_DEFAULT_MAX_CONNECTIONS 1 #define ISCSI_DEFAULT_MAX_OUT_R2T 1 #define ISCSI_DEFAULT_ERROR_RECOVERY_LEVEL 0 #define ISCSI_DEFAULT_IFMARKER FALSE #define ISCSI_DEFAULT_OFMARKER FALSE /* * Minimum values from the iSCSI specification */ #define ISCSI_MIN_TIME2RETAIN 0 #define ISCSI_MIN_TIME2WAIT 0 #define ISCSI_MIN_ERROR_RECOVERY_LEVEL 0 #define ISCSI_MIN_RECV_DATA_SEGMENT_LENGTH 0x200 #define ISCSI_MIN_FIRST_BURST_LENGTH 0x200 #define ISCSI_MIN_MAX_BURST_LENGTH 0x200 #define ISCSI_MIN_CONNECTIONS 1 #define ISCSI_MIN_MAX_OUTSTANDING_R2T 1 /* * Maximum values from the iSCSI specification */ #define ISCSI_MAX_HEADER_DIGEST 3 #define ISCSI_MAX_DATA_DIGEST 3 #define ISCSI_MAX_TIME2RETAIN 3600 #define ISCSI_MAX_TIME2WAIT 3600 #define ISCSI_MAX_ERROR_RECOVERY_LEVEL 2 #define ISCSI_MAX_FIRST_BURST_LENGTH 0xffffff #define ISCSI_MAX_BURST_LENGTH 0xffffff #define ISCSI_MAX_CONNECTIONS 65535 #define ISCSI_MAX_OUTSTANDING_R2T 65535 #define ISCSI_MAX_RECV_DATA_SEGMENT_LENGTH 0xffffff #define ISCSI_MAX_TPGT_VALUE 65535 /* 16 bit numeric */ /* * iqn and eui name prefixes and related defines */ #define ISCSI_IQN_NAME_PREFIX "iqn" #define ISCSI_EUI_NAME_PREFIX "eui" #define ISCSI_EUI_NAME_LEN 20 /* eui. plus 16 octets */ #ifdef __cplusplus } #endif #endif /* _ISCSI_PROTOCOL_H */
