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657 lines
16 KiB
657 lines
16 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* RFC 3720 (iSCSI) protocol data types |
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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 [email protected] |
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*/ |
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#ifndef ISCSI_PROTO_H |
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#define ISCSI_PROTO_H |
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#include <linux/types.h> |
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#include <scsi/scsi.h> |
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#define ISCSI_DRAFT20_VERSION 0x00 |
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/* default iSCSI listen port for incoming connections */ |
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#define ISCSI_LISTEN_PORT 3260 |
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/* iSCSI header length */ |
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#define ISCSI_HDR_LEN 48 |
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/* iSCSI CRC32C length */ |
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#define ISCSI_CRC_LEN 4 |
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/* Padding word length */ |
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#define ISCSI_PAD_LEN 4 |
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/* |
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* Serial Number Arithmetic, 32 bits, RFC1982 |
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*/ |
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static inline int iscsi_sna_lt(u32 n1, u32 n2) |
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{ |
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return (s32)(n1 - n2) < 0; |
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} |
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static inline int iscsi_sna_lte(u32 n1, u32 n2) |
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{ |
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return (s32)(n1 - n2) <= 0; |
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} |
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static inline int iscsi_sna_gt(u32 n1, u32 n2) |
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{ |
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return (s32)(n1 - n2) > 0; |
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} |
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static inline int iscsi_sna_gte(u32 n1, u32 n2) |
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{ |
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return (s32)(n1 - n2) >= 0; |
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} |
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/* |
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* useful common(control and data pathes) macro |
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*/ |
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#define ntoh24(p) (((p)[0] << 16) | ((p)[1] << 8) | ((p)[2])) |
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#define hton24(p, v) { \ |
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p[0] = (((v) >> 16) & 0xFF); \ |
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p[1] = (((v) >> 8) & 0xFF); \ |
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p[2] = ((v) & 0xFF); \ |
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} |
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#define zero_data(p) {p[0]=0;p[1]=0;p[2]=0;} |
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/* initiator tags; opaque for target */ |
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typedef uint32_t __bitwise itt_t; |
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/* below makes sense only for initiator that created this tag */ |
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#define build_itt(itt, age) ((__force itt_t)\ |
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((itt) | ((age) << ISCSI_AGE_SHIFT))) |
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#define get_itt(itt) ((__force uint32_t)(itt_t)(itt) & ISCSI_ITT_MASK) |
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#define RESERVED_ITT ((__force itt_t)0xffffffff) |
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/* |
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* iSCSI Template Message Header |
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*/ |
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struct iscsi_hdr { |
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uint8_t opcode; |
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uint8_t flags; /* Final bit */ |
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uint8_t rsvd2[2]; |
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uint8_t hlength; /* AHSs total length */ |
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uint8_t dlength[3]; /* Data length */ |
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struct scsi_lun lun; |
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itt_t itt; /* Initiator Task Tag, opaque for target */ |
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__be32 ttt; /* Target Task Tag */ |
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__be32 statsn; |
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__be32 exp_statsn; |
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__be32 max_statsn; |
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uint8_t other[12]; |
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}; |
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/************************* RFC 3720 Begin *****************************/ |
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#define ISCSI_RESERVED_TAG 0xffffffff |
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/* Opcode encoding bits */ |
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#define ISCSI_OP_RETRY 0x80 |
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#define ISCSI_OP_IMMEDIATE 0x40 |
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#define ISCSI_OPCODE_MASK 0x3F |
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/* Initiator Opcode values */ |
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#define ISCSI_OP_NOOP_OUT 0x00 |
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#define ISCSI_OP_SCSI_CMD 0x01 |
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#define ISCSI_OP_SCSI_TMFUNC 0x02 |
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#define ISCSI_OP_LOGIN 0x03 |
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#define ISCSI_OP_TEXT 0x04 |
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#define ISCSI_OP_SCSI_DATA_OUT 0x05 |
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#define ISCSI_OP_LOGOUT 0x06 |
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#define ISCSI_OP_SNACK 0x10 |
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#define ISCSI_OP_VENDOR1_CMD 0x1c |
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#define ISCSI_OP_VENDOR2_CMD 0x1d |
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#define ISCSI_OP_VENDOR3_CMD 0x1e |
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#define ISCSI_OP_VENDOR4_CMD 0x1f |
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/* Target Opcode values */ |
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#define ISCSI_OP_NOOP_IN 0x20 |
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#define ISCSI_OP_SCSI_CMD_RSP 0x21 |
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#define ISCSI_OP_SCSI_TMFUNC_RSP 0x22 |
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#define ISCSI_OP_LOGIN_RSP 0x23 |
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#define ISCSI_OP_TEXT_RSP 0x24 |
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#define ISCSI_OP_SCSI_DATA_IN 0x25 |
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#define ISCSI_OP_LOGOUT_RSP 0x26 |
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#define ISCSI_OP_R2T 0x31 |
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#define ISCSI_OP_ASYNC_EVENT 0x32 |
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#define ISCSI_OP_REJECT 0x3f |
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struct iscsi_ahs_hdr { |
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__be16 ahslength; |
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uint8_t ahstype; |
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uint8_t ahspec[5]; |
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}; |
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#define ISCSI_AHSTYPE_CDB 1 |
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#define ISCSI_AHSTYPE_RLENGTH 2 |
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#define ISCSI_CDB_SIZE 16 |
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/* iSCSI PDU Header */ |
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struct iscsi_scsi_req { |
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uint8_t opcode; |
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uint8_t flags; |
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__be16 rsvd2; |
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uint8_t hlength; |
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uint8_t dlength[3]; |
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struct scsi_lun lun; |
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itt_t itt; /* Initiator Task Tag */ |
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__be32 data_length; |
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__be32 cmdsn; |
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__be32 exp_statsn; |
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uint8_t cdb[ISCSI_CDB_SIZE]; /* SCSI Command Block */ |
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/* Additional Data (Command Dependent) */ |
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}; |
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/* Command PDU flags */ |
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#define ISCSI_FLAG_CMD_FINAL 0x80 |
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#define ISCSI_FLAG_CMD_READ 0x40 |
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#define ISCSI_FLAG_CMD_WRITE 0x20 |
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#define ISCSI_FLAG_CMD_ATTR_MASK 0x07 /* 3 bits */ |
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/* SCSI Command Attribute values */ |
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#define ISCSI_ATTR_UNTAGGED 0 |
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#define ISCSI_ATTR_SIMPLE 1 |
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#define ISCSI_ATTR_ORDERED 2 |
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#define ISCSI_ATTR_HEAD_OF_QUEUE 3 |
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#define ISCSI_ATTR_ACA 4 |
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struct iscsi_rlength_ahdr { |
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__be16 ahslength; |
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uint8_t ahstype; |
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uint8_t reserved; |
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__be32 read_length; |
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}; |
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/* Extended CDB AHS */ |
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struct iscsi_ecdb_ahdr { |
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__be16 ahslength; /* CDB length - 15, including reserved byte */ |
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uint8_t ahstype; |
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uint8_t reserved; |
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/* 4-byte aligned extended CDB spillover */ |
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uint8_t ecdb[SCSI_MAX_VARLEN_CDB_SIZE - ISCSI_CDB_SIZE]; |
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}; |
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/* SCSI Response Header */ |
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struct iscsi_scsi_rsp { |
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uint8_t opcode; |
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uint8_t flags; |
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uint8_t response; |
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uint8_t cmd_status; |
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uint8_t hlength; |
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uint8_t dlength[3]; |
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uint8_t rsvd[8]; |
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itt_t itt; /* Initiator Task Tag */ |
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__be32 rsvd1; |
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__be32 statsn; |
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__be32 exp_cmdsn; |
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__be32 max_cmdsn; |
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__be32 exp_datasn; |
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__be32 bi_residual_count; |
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__be32 residual_count; |
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/* Response or Sense Data (optional) */ |
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}; |
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/* Command Response PDU flags */ |
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#define ISCSI_FLAG_CMD_BIDI_OVERFLOW 0x10 |
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#define ISCSI_FLAG_CMD_BIDI_UNDERFLOW 0x08 |
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#define ISCSI_FLAG_CMD_OVERFLOW 0x04 |
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#define ISCSI_FLAG_CMD_UNDERFLOW 0x02 |
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/* iSCSI Status values. Valid if Rsp Selector bit is not set */ |
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#define ISCSI_STATUS_CMD_COMPLETED 0 |
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#define ISCSI_STATUS_TARGET_FAILURE 1 |
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#define ISCSI_STATUS_SUBSYS_FAILURE 2 |
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/* Asynchronous Event Header */ |
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struct iscsi_async { |
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uint8_t opcode; |
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uint8_t flags; |
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uint8_t rsvd2[2]; |
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uint8_t rsvd3; |
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uint8_t dlength[3]; |
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struct scsi_lun lun; |
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uint8_t rsvd4[8]; |
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__be32 statsn; |
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__be32 exp_cmdsn; |
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__be32 max_cmdsn; |
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uint8_t async_event; |
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uint8_t async_vcode; |
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__be16 param1; |
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__be16 param2; |
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__be16 param3; |
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uint8_t rsvd5[4]; |
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}; |
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/* iSCSI Event Codes */ |
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#define ISCSI_ASYNC_MSG_SCSI_EVENT 0 |
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#define ISCSI_ASYNC_MSG_REQUEST_LOGOUT 1 |
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#define ISCSI_ASYNC_MSG_DROPPING_CONNECTION 2 |
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#define ISCSI_ASYNC_MSG_DROPPING_ALL_CONNECTIONS 3 |
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#define ISCSI_ASYNC_MSG_PARAM_NEGOTIATION 4 |
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#define ISCSI_ASYNC_MSG_VENDOR_SPECIFIC 255 |
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/* NOP-Out Message */ |
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struct iscsi_nopout { |
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uint8_t opcode; |
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uint8_t flags; |
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__be16 rsvd2; |
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uint8_t rsvd3; |
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uint8_t dlength[3]; |
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struct scsi_lun lun; |
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itt_t itt; /* Initiator Task Tag */ |
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__be32 ttt; /* Target Transfer Tag */ |
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__be32 cmdsn; |
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__be32 exp_statsn; |
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uint8_t rsvd4[16]; |
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}; |
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/* NOP-In Message */ |
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struct iscsi_nopin { |
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uint8_t opcode; |
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uint8_t flags; |
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__be16 rsvd2; |
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uint8_t rsvd3; |
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uint8_t dlength[3]; |
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struct scsi_lun lun; |
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itt_t itt; /* Initiator Task Tag */ |
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__be32 ttt; /* Target Transfer Tag */ |
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__be32 statsn; |
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__be32 exp_cmdsn; |
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__be32 max_cmdsn; |
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uint8_t rsvd4[12]; |
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}; |
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/* SCSI Task Management Message Header */ |
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struct iscsi_tm { |
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uint8_t opcode; |
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uint8_t flags; |
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uint8_t rsvd1[2]; |
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uint8_t hlength; |
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uint8_t dlength[3]; |
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struct scsi_lun lun; |
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itt_t itt; /* Initiator Task Tag */ |
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itt_t rtt; /* Reference Task Tag */ |
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__be32 cmdsn; |
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__be32 exp_statsn; |
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__be32 refcmdsn; |
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__be32 exp_datasn; |
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uint8_t rsvd2[8]; |
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}; |
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#define ISCSI_FLAG_TM_FUNC_MASK 0x7F |
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/* Function values */ |
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#define ISCSI_TM_FUNC_ABORT_TASK 1 |
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#define ISCSI_TM_FUNC_ABORT_TASK_SET 2 |
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#define ISCSI_TM_FUNC_CLEAR_ACA 3 |
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#define ISCSI_TM_FUNC_CLEAR_TASK_SET 4 |
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#define ISCSI_TM_FUNC_LOGICAL_UNIT_RESET 5 |
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#define ISCSI_TM_FUNC_TARGET_WARM_RESET 6 |
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#define ISCSI_TM_FUNC_TARGET_COLD_RESET 7 |
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#define ISCSI_TM_FUNC_TASK_REASSIGN 8 |
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#define ISCSI_TM_FUNC_VALUE(hdr) ((hdr)->flags & ISCSI_FLAG_TM_FUNC_MASK) |
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/* SCSI Task Management Response Header */ |
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struct iscsi_tm_rsp { |
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uint8_t opcode; |
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uint8_t flags; |
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uint8_t response; /* see Response values below */ |
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uint8_t qualifier; |
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uint8_t hlength; |
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uint8_t dlength[3]; |
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uint8_t rsvd2[8]; |
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itt_t itt; /* Initiator Task Tag */ |
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itt_t rtt; /* Reference Task Tag */ |
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__be32 statsn; |
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__be32 exp_cmdsn; |
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__be32 max_cmdsn; |
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uint8_t rsvd3[12]; |
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}; |
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/* Response values */ |
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#define ISCSI_TMF_RSP_COMPLETE 0x00 |
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#define ISCSI_TMF_RSP_NO_TASK 0x01 |
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#define ISCSI_TMF_RSP_NO_LUN 0x02 |
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#define ISCSI_TMF_RSP_TASK_ALLEGIANT 0x03 |
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#define ISCSI_TMF_RSP_NO_FAILOVER 0x04 |
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#define ISCSI_TMF_RSP_NOT_SUPPORTED 0x05 |
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#define ISCSI_TMF_RSP_AUTH_FAILED 0x06 |
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#define ISCSI_TMF_RSP_REJECTED 0xff |
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/* Ready To Transfer Header */ |
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struct iscsi_r2t_rsp { |
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uint8_t opcode; |
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uint8_t flags; |
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uint8_t rsvd2[2]; |
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uint8_t hlength; |
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uint8_t dlength[3]; |
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struct scsi_lun lun; |
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itt_t itt; /* Initiator Task Tag */ |
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__be32 ttt; /* Target Transfer Tag */ |
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__be32 statsn; |
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__be32 exp_cmdsn; |
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__be32 max_cmdsn; |
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__be32 r2tsn; |
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__be32 data_offset; |
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__be32 data_length; |
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}; |
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/* SCSI Data Hdr */ |
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struct iscsi_data { |
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uint8_t opcode; |
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uint8_t flags; |
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uint8_t rsvd2[2]; |
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uint8_t rsvd3; |
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uint8_t dlength[3]; |
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struct scsi_lun lun; |
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itt_t itt; |
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__be32 ttt; |
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__be32 rsvd4; |
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__be32 exp_statsn; |
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__be32 rsvd5; |
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__be32 datasn; |
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__be32 offset; |
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__be32 rsvd6; |
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/* Payload */ |
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}; |
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/* SCSI Data Response Hdr */ |
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struct iscsi_data_rsp { |
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uint8_t opcode; |
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uint8_t flags; |
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uint8_t rsvd2; |
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uint8_t cmd_status; |
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uint8_t hlength; |
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uint8_t dlength[3]; |
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struct scsi_lun lun; |
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itt_t itt; |
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__be32 ttt; |
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__be32 statsn; |
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__be32 exp_cmdsn; |
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__be32 max_cmdsn; |
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__be32 datasn; |
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__be32 offset; |
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__be32 residual_count; |
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}; |
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/* Data Response PDU flags */ |
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#define ISCSI_FLAG_DATA_ACK 0x40 |
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#define ISCSI_FLAG_DATA_OVERFLOW 0x04 |
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#define ISCSI_FLAG_DATA_UNDERFLOW 0x02 |
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#define ISCSI_FLAG_DATA_STATUS 0x01 |
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/* Text Header */ |
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struct iscsi_text { |
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uint8_t opcode; |
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uint8_t flags; |
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uint8_t rsvd2[2]; |
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uint8_t hlength; |
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uint8_t dlength[3]; |
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uint8_t rsvd4[8]; |
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itt_t itt; |
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__be32 ttt; |
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__be32 cmdsn; |
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__be32 exp_statsn; |
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uint8_t rsvd5[16]; |
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/* Text - key=value pairs */ |
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}; |
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#define ISCSI_FLAG_TEXT_CONTINUE 0x40 |
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/* Text Response Header */ |
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struct iscsi_text_rsp { |
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uint8_t opcode; |
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uint8_t flags; |
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uint8_t rsvd2[2]; |
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uint8_t hlength; |
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uint8_t dlength[3]; |
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uint8_t rsvd4[8]; |
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itt_t itt; |
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__be32 ttt; |
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__be32 statsn; |
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__be32 exp_cmdsn; |
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__be32 max_cmdsn; |
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uint8_t rsvd5[12]; |
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/* Text Response - key:value pairs */ |
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}; |
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/* Login Header */ |
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struct iscsi_login_req { |
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uint8_t opcode; |
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uint8_t flags; |
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uint8_t max_version; /* Max. version supported */ |
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uint8_t min_version; /* Min. version supported */ |
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uint8_t hlength; |
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uint8_t dlength[3]; |
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uint8_t isid[6]; /* Initiator Session ID */ |
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__be16 tsih; /* Target Session Handle */ |
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itt_t itt; /* Initiator Task Tag */ |
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__be16 cid; |
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__be16 rsvd3; |
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__be32 cmdsn; |
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__be32 exp_statsn; |
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uint8_t rsvd5[16]; |
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}; |
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/* Login PDU flags */ |
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#define ISCSI_FLAG_LOGIN_TRANSIT 0x80 |
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#define ISCSI_FLAG_LOGIN_CONTINUE 0x40 |
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#define ISCSI_FLAG_LOGIN_CURRENT_STAGE_MASK 0x0C /* 2 bits */ |
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#define ISCSI_FLAG_LOGIN_CURRENT_STAGE1 0x04 |
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#define ISCSI_FLAG_LOGIN_CURRENT_STAGE2 0x08 |
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#define ISCSI_FLAG_LOGIN_CURRENT_STAGE3 0x0C |
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#define ISCSI_FLAG_LOGIN_NEXT_STAGE_MASK 0x03 /* 2 bits */ |
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#define ISCSI_FLAG_LOGIN_NEXT_STAGE1 0x01 |
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#define ISCSI_FLAG_LOGIN_NEXT_STAGE2 0x02 |
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#define ISCSI_FLAG_LOGIN_NEXT_STAGE3 0x03 |
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#define ISCSI_LOGIN_CURRENT_STAGE(flags) \ |
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((flags & ISCSI_FLAG_LOGIN_CURRENT_STAGE_MASK) >> 2) |
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#define ISCSI_LOGIN_NEXT_STAGE(flags) \ |
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(flags & ISCSI_FLAG_LOGIN_NEXT_STAGE_MASK) |
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/* Login Response Header */ |
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struct iscsi_login_rsp { |
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uint8_t opcode; |
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uint8_t flags; |
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uint8_t max_version; /* Max. version supported */ |
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uint8_t active_version; /* Active version */ |
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uint8_t hlength; |
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uint8_t dlength[3]; |
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uint8_t isid[6]; /* Initiator Session ID */ |
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__be16 tsih; /* Target Session Handle */ |
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itt_t itt; /* Initiator Task Tag */ |
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__be32 rsvd3; |
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__be32 statsn; |
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__be32 exp_cmdsn; |
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__be32 max_cmdsn; |
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uint8_t status_class; /* see Login RSP ststus classes below */ |
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uint8_t status_detail; /* see Login RSP Status details below */ |
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uint8_t rsvd4[10]; |
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}; |
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/* Login stage (phase) codes for CSG, NSG */ |
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#define ISCSI_INITIAL_LOGIN_STAGE -1 |
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#define ISCSI_SECURITY_NEGOTIATION_STAGE 0 |
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#define ISCSI_OP_PARMS_NEGOTIATION_STAGE 1 |
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#define ISCSI_FULL_FEATURE_PHASE 3 |
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/* Login Status response classes */ |
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#define ISCSI_STATUS_CLS_SUCCESS 0x00 |
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#define ISCSI_STATUS_CLS_REDIRECT 0x01 |
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#define ISCSI_STATUS_CLS_INITIATOR_ERR 0x02 |
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#define ISCSI_STATUS_CLS_TARGET_ERR 0x03 |
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/* Login Status response detail codes */ |
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/* Class-0 (Success) */ |
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#define ISCSI_LOGIN_STATUS_ACCEPT 0x00 |
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/* Class-1 (Redirection) */ |
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#define ISCSI_LOGIN_STATUS_TGT_MOVED_TEMP 0x01 |
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#define ISCSI_LOGIN_STATUS_TGT_MOVED_PERM 0x02 |
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/* Class-2 (Initiator Error) */ |
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#define ISCSI_LOGIN_STATUS_INIT_ERR 0x00 |
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#define ISCSI_LOGIN_STATUS_AUTH_FAILED 0x01 |
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#define ISCSI_LOGIN_STATUS_TGT_FORBIDDEN 0x02 |
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#define ISCSI_LOGIN_STATUS_TGT_NOT_FOUND 0x03 |
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#define ISCSI_LOGIN_STATUS_TGT_REMOVED 0x04 |
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#define ISCSI_LOGIN_STATUS_NO_VERSION 0x05 |
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#define ISCSI_LOGIN_STATUS_ISID_ERROR 0x06 |
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#define ISCSI_LOGIN_STATUS_MISSING_FIELDS 0x07 |
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#define ISCSI_LOGIN_STATUS_CONN_ADD_FAILED 0x08 |
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#define ISCSI_LOGIN_STATUS_NO_SESSION_TYPE 0x09 |
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#define ISCSI_LOGIN_STATUS_NO_SESSION 0x0a |
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#define ISCSI_LOGIN_STATUS_INVALID_REQUEST 0x0b |
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/* Class-3 (Target Error) */ |
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#define ISCSI_LOGIN_STATUS_TARGET_ERROR 0x00 |
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#define ISCSI_LOGIN_STATUS_SVC_UNAVAILABLE 0x01 |
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#define ISCSI_LOGIN_STATUS_NO_RESOURCES 0x02 |
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/* Logout Header */ |
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struct iscsi_logout { |
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uint8_t opcode; |
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uint8_t flags; |
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uint8_t rsvd1[2]; |
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uint8_t hlength; |
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uint8_t dlength[3]; |
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uint8_t rsvd2[8]; |
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itt_t itt; /* Initiator Task Tag */ |
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__be16 cid; |
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uint8_t rsvd3[2]; |
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__be32 cmdsn; |
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__be32 exp_statsn; |
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uint8_t rsvd4[16]; |
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}; |
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|
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/* Logout PDU flags */ |
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#define ISCSI_FLAG_LOGOUT_REASON_MASK 0x7F |
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|
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/* logout reason_code values */ |
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|
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#define ISCSI_LOGOUT_REASON_CLOSE_SESSION 0 |
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#define ISCSI_LOGOUT_REASON_CLOSE_CONNECTION 1 |
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#define ISCSI_LOGOUT_REASON_RECOVERY 2 |
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#define ISCSI_LOGOUT_REASON_AEN_REQUEST 3 |
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|
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/* Logout Response Header */ |
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struct iscsi_logout_rsp { |
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uint8_t opcode; |
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uint8_t flags; |
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uint8_t response; /* see Logout response values below */ |
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uint8_t rsvd2; |
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uint8_t hlength; |
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uint8_t dlength[3]; |
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uint8_t rsvd3[8]; |
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itt_t itt; /* Initiator Task Tag */ |
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__be32 rsvd4; |
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__be32 statsn; |
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__be32 exp_cmdsn; |
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__be32 max_cmdsn; |
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__be32 rsvd5; |
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__be16 t2wait; |
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__be16 t2retain; |
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__be32 rsvd6; |
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}; |
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|
|
/* logout response status values */ |
|
|
|
#define ISCSI_LOGOUT_SUCCESS 0 |
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#define ISCSI_LOGOUT_CID_NOT_FOUND 1 |
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#define ISCSI_LOGOUT_RECOVERY_UNSUPPORTED 2 |
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#define ISCSI_LOGOUT_CLEANUP_FAILED 3 |
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|
|
/* SNACK Header */ |
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struct iscsi_snack { |
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uint8_t opcode; |
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uint8_t flags; |
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uint8_t rsvd2[2]; |
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uint8_t hlength; |
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uint8_t dlength[3]; |
|
uint8_t lun[8]; |
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itt_t itt; |
|
__be32 ttt; |
|
uint8_t rsvd3[4]; |
|
__be32 exp_statsn; |
|
uint8_t rsvd4[8]; |
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__be32 begrun; |
|
__be32 runlength; |
|
}; |
|
|
|
/* SNACK PDU flags */ |
|
#define ISCSI_FLAG_SNACK_TYPE_DATA 0 |
|
#define ISCSI_FLAG_SNACK_TYPE_R2T 0 |
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#define ISCSI_FLAG_SNACK_TYPE_STATUS 1 |
|
#define ISCSI_FLAG_SNACK_TYPE_DATA_ACK 2 |
|
#define ISCSI_FLAG_SNACK_TYPE_RDATA 3 |
|
#define ISCSI_FLAG_SNACK_TYPE_MASK 0x0F /* 4 bits */ |
|
|
|
/* Reject Message Header */ |
|
struct iscsi_reject { |
|
uint8_t opcode; |
|
uint8_t flags; |
|
uint8_t reason; |
|
uint8_t rsvd2; |
|
uint8_t hlength; |
|
uint8_t dlength[3]; |
|
uint8_t rsvd3[8]; |
|
__be32 ffffffff; |
|
uint8_t rsvd4[4]; |
|
__be32 statsn; |
|
__be32 exp_cmdsn; |
|
__be32 max_cmdsn; |
|
__be32 datasn; |
|
uint8_t rsvd5[8]; |
|
/* Text - Rejected hdr */ |
|
}; |
|
|
|
/* Reason for Reject */ |
|
#define ISCSI_REASON_CMD_BEFORE_LOGIN 1 |
|
#define ISCSI_REASON_DATA_DIGEST_ERROR 2 |
|
#define ISCSI_REASON_DATA_SNACK_REJECT 3 |
|
#define ISCSI_REASON_PROTOCOL_ERROR 4 |
|
#define ISCSI_REASON_CMD_NOT_SUPPORTED 5 |
|
#define ISCSI_REASON_IMM_CMD_REJECT 6 |
|
#define ISCSI_REASON_TASK_IN_PROGRESS 7 |
|
#define ISCSI_REASON_INVALID_SNACK 8 |
|
#define ISCSI_REASON_BOOKMARK_INVALID 9 |
|
#define ISCSI_REASON_BOOKMARK_NO_RESOURCES 10 |
|
#define ISCSI_REASON_NEGOTIATION_RESET 11 |
|
|
|
/* Max. number of Key=Value pairs in a text message */ |
|
#define MAX_KEY_VALUE_PAIRS 8192 |
|
|
|
/* maximum length for text keys/values */ |
|
#define KEY_MAXLEN 64 |
|
#define VALUE_MAXLEN 255 |
|
#define TARGET_NAME_MAXLEN VALUE_MAXLEN |
|
|
|
#define ISCSI_DEF_MAX_RECV_SEG_LEN 8192 |
|
#define ISCSI_MIN_MAX_RECV_SEG_LEN 512 |
|
#define ISCSI_MAX_MAX_RECV_SEG_LEN 16777215 |
|
|
|
#define ISCSI_DEF_FIRST_BURST_LEN 65536 |
|
#define ISCSI_MIN_FIRST_BURST_LEN 512 |
|
#define ISCSI_MAX_FIRST_BURST_LEN 16777215 |
|
|
|
#define ISCSI_DEF_MAX_BURST_LEN 262144 |
|
#define ISCSI_MIN_MAX_BURST_LEN 512 |
|
#define ISCSI_MAX_MAX_BURST_LEN 16777215 |
|
|
|
#define ISCSI_DEF_TIME2WAIT 2 |
|
|
|
#define ISCSI_NAME_LEN 224 |
|
|
|
/************************* RFC 3720 End *****************************/ |
|
|
|
#endif /* ISCSI_PROTO_H */
|
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