440 lines
13 KiB
C
440 lines
13 KiB
C
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/*-
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* Copyright (c) 2012 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Edward Tomasz Napierala under sponsorship
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* from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef ISCSI_PROTO_H
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#define ISCSI_PROTO_H
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#ifndef CTASSERT
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#define CTASSERT(x) _CTASSERT(x, __LINE__)
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#define _CTASSERT(x, y) __CTASSERT(x, y)
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#define __CTASSERT(x, y) typedef char __assert_ ## y [(x) ? 1 : -1]
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#endif
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#define ISCSI_BHS_SIZE 48
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#define ISCSI_HEADER_DIGEST_SIZE 4
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#define ISCSI_DATA_DIGEST_SIZE 4
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#define ISCSI_BHS_OPCODE_IMMEDIATE 0x40
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#define ISCSI_BHS_OPCODE_NOP_OUT 0x00
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#define ISCSI_BHS_OPCODE_SCSI_COMMAND 0x01
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#define ISCSI_BHS_OPCODE_TASK_REQUEST 0x02
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#define ISCSI_BHS_OPCODE_LOGIN_REQUEST 0x03
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#define ISCSI_BHS_OPCODE_TEXT_REQUEST 0x04
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#define ISCSI_BHS_OPCODE_SCSI_DATA_OUT 0x05
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#define ISCSI_BHS_OPCODE_LOGOUT_REQUEST 0x06
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#define ISCSI_BHS_OPCODE_NOP_IN 0x20
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#define ISCSI_BHS_OPCODE_SCSI_RESPONSE 0x21
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#define ISCSI_BHS_OPCODE_TASK_RESPONSE 0x22
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#define ISCSI_BHS_OPCODE_LOGIN_RESPONSE 0x23
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#define ISCSI_BHS_OPCODE_TEXT_RESPONSE 0x24
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#define ISCSI_BHS_OPCODE_SCSI_DATA_IN 0x25
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#define ISCSI_BHS_OPCODE_LOGOUT_RESPONSE 0x26
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#define ISCSI_BHS_OPCODE_R2T 0x31
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#define ISCSI_BHS_OPCODE_ASYNC_MESSAGE 0x32
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#define ISCSI_BHS_OPCODE_REJECT 0x3f
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struct iscsi_bhs {
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uint8_t bhs_opcode;
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uint8_t bhs_opcode_specific1[3];
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uint8_t bhs_total_ahs_len;
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uint8_t bhs_data_segment_len[3];
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uint64_t bhs_lun;
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uint8_t bhs_inititator_task_tag[4];
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uint8_t bhs_opcode_specific4[28];
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};
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CTASSERT(sizeof(struct iscsi_bhs) == ISCSI_BHS_SIZE);
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#define BHSSC_FLAGS_F 0x80
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#define BHSSC_FLAGS_R 0x40
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#define BHSSC_FLAGS_W 0x20
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#define BHSSC_FLAGS_ATTR 0x07
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#define BHSSC_FLAGS_ATTR_UNTAGGED 0
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#define BHSSC_FLAGS_ATTR_SIMPLE 1
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#define BHSSC_FLAGS_ATTR_ORDERED 2
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#define BHSSC_FLAGS_ATTR_HOQ 3
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#define BHSSC_FLAGS_ATTR_ACA 4
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struct iscsi_bhs_scsi_command {
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uint8_t bhssc_opcode;
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uint8_t bhssc_flags;
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uint8_t bhssc_reserved[2];
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uint8_t bhssc_total_ahs_len;
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uint8_t bhssc_data_segment_len[3];
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uint64_t bhssc_lun;
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uint32_t bhssc_initiator_task_tag;
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uint32_t bhssc_expected_data_transfer_length;
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uint32_t bhssc_cmdsn;
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uint32_t bhssc_expstatsn;
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uint8_t bhssc_cdb[16];
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};
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CTASSERT(sizeof(struct iscsi_bhs_scsi_command) == ISCSI_BHS_SIZE);
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#define BHSSR_FLAGS_RESIDUAL_UNDERFLOW 0x02
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#define BHSSR_FLAGS_RESIDUAL_OVERFLOW 0x04
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#define BHSSR_RESPONSE_COMMAND_COMPLETED 0x00
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struct iscsi_bhs_scsi_response {
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uint8_t bhssr_opcode;
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uint8_t bhssr_flags;
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uint8_t bhssr_response;
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uint8_t bhssr_status;
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uint8_t bhssr_total_ahs_len;
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uint8_t bhssr_data_segment_len[3];
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uint64_t bhssr_reserved;
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uint32_t bhssr_initiator_task_tag;
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uint32_t bhssr_snack_tag;
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uint32_t bhssr_statsn;
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uint32_t bhssr_expcmdsn;
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uint32_t bhssr_maxcmdsn;
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uint32_t bhssr_expdatasn;
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uint32_t bhssr_bidirectional_read_residual_count;
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uint32_t bhssr_residual_count;
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};
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CTASSERT(sizeof(struct iscsi_bhs_scsi_response) == ISCSI_BHS_SIZE);
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#define BHSTMR_FUNCTION_ABORT_TASK 1
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#define BHSTMR_FUNCTION_ABORT_TASK_SET 2
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#define BHSTMR_FUNCTION_CLEAR_ACA 3
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#define BHSTMR_FUNCTION_CLEAR_TASK_SET 4
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#define BHSTMR_FUNCTION_LOGICAL_UNIT_RESET 5
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#define BHSTMR_FUNCTION_TARGET_WARM_RESET 6
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#define BHSTMR_FUNCTION_TARGET_COLD_RESET 7
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#define BHSTMR_FUNCTION_TASK_REASSIGN 8
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struct iscsi_bhs_task_management_request {
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uint8_t bhstmr_opcode;
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uint8_t bhstmr_function;
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uint8_t bhstmr_reserved[2];
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uint8_t bhstmr_total_ahs_len;
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uint8_t bhstmr_data_segment_len[3];
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uint64_t bhstmr_lun;
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uint32_t bhstmr_initiator_task_tag;
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uint32_t bhstmr_referenced_task_tag;
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uint32_t bhstmr_cmdsn;
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uint32_t bhstmr_expstatsn;
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uint32_t bhstmr_refcmdsn;
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uint32_t bhstmr_expdatasn;
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uint64_t bhstmr_reserved2;
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};
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CTASSERT(sizeof(struct iscsi_bhs_task_management_request) == ISCSI_BHS_SIZE);
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#define BHSTMR_RESPONSE_FUNCTION_COMPLETE 0
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#define BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED 5
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struct iscsi_bhs_task_management_response {
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uint8_t bhstmr_opcode;
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uint8_t bhstmr_flags;
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uint8_t bhstmr_response;
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uint8_t bhstmr_reserved;
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uint8_t bhstmr_total_ahs_len;
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uint8_t bhstmr_data_segment_len[3];
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uint64_t bhstmr_reserved2;
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uint32_t bhstmr_initiator_task_tag;
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uint32_t bhstmr_reserved3;
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uint32_t bhstmr_statsn;
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uint32_t bhstmr_expcmdsn;
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uint32_t bhstmr_maxcmdsn;
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uint8_t bhstmr_reserved4[12];
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};
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CTASSERT(sizeof(struct iscsi_bhs_task_management_response) == ISCSI_BHS_SIZE);
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#define BHSLR_FLAGS_TRANSIT 0x80
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#define BHSLR_FLAGS_CONTINUE 0x40
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#define BHSLR_STAGE_SECURITY_NEGOTIATION 0
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#define BHSLR_STAGE_OPERATIONAL_NEGOTIATION 1
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#define BHSLR_STAGE_FULL_FEATURE_PHASE 3 /* Yes, 3. */
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struct iscsi_bhs_login_request {
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uint8_t bhslr_opcode;
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uint8_t bhslr_flags;
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uint8_t bhslr_version_max;
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uint8_t bhslr_version_min;
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uint8_t bhslr_total_ahs_len;
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uint8_t bhslr_data_segment_len[3];
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uint8_t bhslr_isid[6];
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uint16_t bhslr_tsih;
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uint32_t bhslr_initiator_task_tag;
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uint16_t bhslr_cid;
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uint16_t bhslr_reserved;
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uint32_t bhslr_cmdsn;
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uint32_t bhslr_expstatsn;
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uint8_t bhslr_reserved2[16];
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};
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CTASSERT(sizeof(struct iscsi_bhs_login_request) == ISCSI_BHS_SIZE);
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struct iscsi_bhs_login_response {
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uint8_t bhslr_opcode;
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uint8_t bhslr_flags;
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uint8_t bhslr_version_max;
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uint8_t bhslr_version_active;
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uint8_t bhslr_total_ahs_len;
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uint8_t bhslr_data_segment_len[3];
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uint8_t bhslr_isid[6];
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uint16_t bhslr_tsih;
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uint32_t bhslr_initiator_task_tag;
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uint32_t bhslr_reserved;
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uint32_t bhslr_statsn;
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uint32_t bhslr_expcmdsn;
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uint32_t bhslr_maxcmdsn;
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uint8_t bhslr_status_class;
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uint8_t bhslr_status_detail;
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uint16_t bhslr_reserved2;
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uint8_t bhslr_reserved3[8];
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};
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CTASSERT(sizeof(struct iscsi_bhs_login_response) == ISCSI_BHS_SIZE);
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#define BHSTR_FLAGS_FINAL 0x80
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#define BHSTR_FLAGS_CONTINUE 0x40
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struct iscsi_bhs_text_request {
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uint8_t bhstr_opcode;
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uint8_t bhstr_flags;
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uint16_t bhstr_reserved;
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uint8_t bhstr_total_ahs_len;
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uint8_t bhstr_data_segment_len[3];
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uint64_t bhstr_lun;
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uint32_t bhstr_initiator_task_tag;
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uint32_t bhstr_target_transfer_tag;
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uint32_t bhstr_cmdsn;
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uint32_t bhstr_expstatsn;
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uint8_t bhstr_reserved2[16];
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};
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CTASSERT(sizeof(struct iscsi_bhs_text_request) == ISCSI_BHS_SIZE);
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struct iscsi_bhs_text_response {
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uint8_t bhstr_opcode;
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uint8_t bhstr_flags;
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uint16_t bhstr_reserved;
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uint8_t bhstr_total_ahs_len;
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uint8_t bhstr_data_segment_len[3];
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uint64_t bhstr_lun;
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uint32_t bhstr_initiator_task_tag;
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uint32_t bhstr_target_transfer_tag;
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uint32_t bhstr_statsn;
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uint32_t bhstr_expcmdsn;
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uint32_t bhstr_maxcmdsn;
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uint8_t bhstr_reserved2[12];
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};
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CTASSERT(sizeof(struct iscsi_bhs_text_response) == ISCSI_BHS_SIZE);
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#define BHSDO_FLAGS_F 0x80
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struct iscsi_bhs_data_out {
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uint8_t bhsdo_opcode;
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uint8_t bhsdo_flags;
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uint8_t bhsdo_reserved[2];
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uint8_t bhsdo_total_ahs_len;
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uint8_t bhsdo_data_segment_len[3];
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uint64_t bhsdo_lun;
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uint32_t bhsdo_initiator_task_tag;
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uint32_t bhsdo_target_transfer_tag;
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uint32_t bhsdo_reserved2;
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uint32_t bhsdo_expstatsn;
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uint32_t bhsdo_reserved3;
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uint32_t bhsdo_datasn;
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uint32_t bhsdo_buffer_offset;
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uint32_t bhsdo_reserved4;
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};
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CTASSERT(sizeof(struct iscsi_bhs_data_out) == ISCSI_BHS_SIZE);
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#define BHSDI_FLAGS_F 0x80
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#define BHSDI_FLAGS_A 0x40
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#define BHSDI_FLAGS_O 0x04
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#define BHSDI_FLAGS_U 0x02
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#define BHSDI_FLAGS_S 0x01
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struct iscsi_bhs_data_in {
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uint8_t bhsdi_opcode;
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uint8_t bhsdi_flags;
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uint8_t bhsdi_reserved;
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uint8_t bhsdi_status;
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uint8_t bhsdi_total_ahs_len;
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uint8_t bhsdi_data_segment_len[3];
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uint64_t bhsdi_lun;
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uint32_t bhsdi_initiator_task_tag;
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uint32_t bhsdi_target_transfer_tag;
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uint32_t bhsdi_statsn;
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uint32_t bhsdi_expcmdsn;
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uint32_t bhsdi_maxcmdsn;
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uint32_t bhsdi_datasn;
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uint32_t bhsdi_buffer_offset;
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uint32_t bhsdi_residual_count;
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};
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CTASSERT(sizeof(struct iscsi_bhs_data_in) == ISCSI_BHS_SIZE);
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struct iscsi_bhs_r2t {
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uint8_t bhsr2t_opcode;
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uint8_t bhsr2t_flags;
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uint16_t bhsr2t_reserved;
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uint8_t bhsr2t_total_ahs_len;
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uint8_t bhsr2t_data_segment_len[3];
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uint64_t bhsr2t_lun;
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uint32_t bhsr2t_initiator_task_tag;
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uint32_t bhsr2t_target_transfer_tag;
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uint32_t bhsr2t_statsn;
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uint32_t bhsr2t_expcmdsn;
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uint32_t bhsr2t_maxcmdsn;
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uint32_t bhsr2t_r2tsn;
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uint32_t bhsr2t_buffer_offset;
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uint32_t bhsr2t_desired_data_transfer_length;
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};
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CTASSERT(sizeof(struct iscsi_bhs_r2t) == ISCSI_BHS_SIZE);
|
||
|
|
|
||
|
|
struct iscsi_bhs_nop_out {
|
||
|
|
uint8_t bhsno_opcode;
|
||
|
|
uint8_t bhsno_flags;
|
||
|
|
uint16_t bhsno_reserved;
|
||
|
|
uint8_t bhsno_total_ahs_len;
|
||
|
|
uint8_t bhsno_data_segment_len[3];
|
||
|
|
uint64_t bhsno_lun;
|
||
|
|
uint32_t bhsno_initiator_task_tag;
|
||
|
|
uint32_t bhsno_target_transfer_tag;
|
||
|
|
uint32_t bhsno_cmdsn;
|
||
|
|
uint32_t bhsno_expstatsn;
|
||
|
|
uint8_t bhsno_reserved2[16];
|
||
|
|
};
|
||
|
|
CTASSERT(sizeof(struct iscsi_bhs_nop_out) == ISCSI_BHS_SIZE);
|
||
|
|
|
||
|
|
struct iscsi_bhs_nop_in {
|
||
|
|
uint8_t bhsni_opcode;
|
||
|
|
uint8_t bhsni_flags;
|
||
|
|
uint16_t bhsni_reserved;
|
||
|
|
uint8_t bhsni_total_ahs_len;
|
||
|
|
uint8_t bhsni_data_segment_len[3];
|
||
|
|
uint64_t bhsni_lun;
|
||
|
|
uint32_t bhsni_initiator_task_tag;
|
||
|
|
uint32_t bhsni_target_transfer_tag;
|
||
|
|
uint32_t bhsni_statsn;
|
||
|
|
uint32_t bhsni_expcmdsn;
|
||
|
|
uint32_t bhsni_maxcmdsn;
|
||
|
|
uint8_t bhsno_reserved2[12];
|
||
|
|
};
|
||
|
|
CTASSERT(sizeof(struct iscsi_bhs_nop_in) == ISCSI_BHS_SIZE);
|
||
|
|
|
||
|
|
#define BHSLR_REASON_CLOSE_SESSION 0
|
||
|
|
#define BHSLR_REASON_CLOSE_CONNECTION 1
|
||
|
|
#define BHSLR_REASON_REMOVE_FOR_RECOVERY 2
|
||
|
|
|
||
|
|
struct iscsi_bhs_logout_request {
|
||
|
|
uint8_t bhslr_opcode;
|
||
|
|
uint8_t bhslr_reason;
|
||
|
|
uint16_t bhslr_reserved;
|
||
|
|
uint8_t bhslr_total_ahs_len;
|
||
|
|
uint8_t bhslr_data_segment_len[3];
|
||
|
|
uint64_t bhslr_reserved2;
|
||
|
|
uint32_t bhslr_initiator_task_tag;
|
||
|
|
uint16_t bhslr_cid;
|
||
|
|
uint16_t bhslr_reserved3;
|
||
|
|
uint32_t bhslr_cmdsn;
|
||
|
|
uint32_t bhslr_expstatsn;
|
||
|
|
uint8_t bhslr_reserved4[16];
|
||
|
|
};
|
||
|
|
CTASSERT(sizeof(struct iscsi_bhs_logout_request) == ISCSI_BHS_SIZE);
|
||
|
|
|
||
|
|
#define BHSLR_RESPONSE_CLOSED_SUCCESSFULLY 0
|
||
|
|
#define BHSLR_RESPONSE_RECOVERY_NOT_SUPPORTED 2
|
||
|
|
|
||
|
|
struct iscsi_bhs_logout_response {
|
||
|
|
uint8_t bhslr_opcode;
|
||
|
|
uint8_t bhslr_flags;
|
||
|
|
uint8_t bhslr_response;
|
||
|
|
uint8_t bhslr_reserved;
|
||
|
|
uint8_t bhslr_total_ahs_len;
|
||
|
|
uint8_t bhslr_data_segment_len[3];
|
||
|
|
uint64_t bhslr_reserved2;
|
||
|
|
uint32_t bhslr_initiator_task_tag;
|
||
|
|
uint32_t bhslr_reserved3;
|
||
|
|
uint32_t bhslr_statsn;
|
||
|
|
uint32_t bhslr_expcmdsn;
|
||
|
|
uint32_t bhslr_maxcmdsn;
|
||
|
|
uint32_t bhslr_reserved4;
|
||
|
|
uint16_t bhslr_time2wait;
|
||
|
|
uint16_t bhslr_time2retain;
|
||
|
|
uint32_t bhslr_reserved5;
|
||
|
|
};
|
||
|
|
CTASSERT(sizeof(struct iscsi_bhs_logout_response) == ISCSI_BHS_SIZE);
|
||
|
|
|
||
|
|
#define BHSAM_EVENT_TARGET_REQUESTS_LOGOUT 1
|
||
|
|
#define BHSAM_EVENT_TARGET_TERMINATES_CONNECTION 2
|
||
|
|
#define BHSAM_EVENT_TARGET_TERMINATES_SESSION 3
|
||
|
|
|
||
|
|
struct iscsi_bhs_asynchronous_message {
|
||
|
|
uint8_t bhsam_opcode;
|
||
|
|
uint8_t bhsam_flags;
|
||
|
|
uint16_t bhsam_reserved;
|
||
|
|
uint8_t bhsam_total_ahs_len;
|
||
|
|
uint8_t bhsam_data_segment_len[3];
|
||
|
|
uint64_t bhsam_lun;
|
||
|
|
uint32_t bhsam_0xffffffff;
|
||
|
|
uint32_t bhsam_reserved2;
|
||
|
|
uint32_t bhsam_statsn;
|
||
|
|
uint32_t bhsam_expcmdsn;
|
||
|
|
uint32_t bhsam_maxcmdsn;
|
||
|
|
uint8_t bhsam_async_event;
|
||
|
|
uint8_t bhsam_async_vcode;
|
||
|
|
uint16_t bhsam_parameter1;
|
||
|
|
uint16_t bhsam_parameter2;
|
||
|
|
uint16_t bhsam_parameter3;
|
||
|
|
uint32_t bhsam_reserved3;
|
||
|
|
};
|
||
|
|
CTASSERT(sizeof(struct iscsi_bhs_asynchronous_message) == ISCSI_BHS_SIZE);
|
||
|
|
|
||
|
|
#define BHSSR_REASON_DATA_DIGEST_ERROR 0x02
|
||
|
|
#define BHSSR_PROTOCOL_ERROR 0x04
|
||
|
|
#define BHSSR_COMMAND_NOT_SUPPORTED 0x05
|
||
|
|
#define BHSSR_INVALID_PDU_FIELD 0x09
|
||
|
|
|
||
|
|
struct iscsi_bhs_reject {
|
||
|
|
uint8_t bhsr_opcode;
|
||
|
|
uint8_t bhsr_flags;
|
||
|
|
uint8_t bhsr_reason;
|
||
|
|
uint8_t bhsr_reserved;
|
||
|
|
uint8_t bhsr_total_ahs_len;
|
||
|
|
uint8_t bhsr_data_segment_len[3];
|
||
|
|
uint64_t bhsr_reserved2;
|
||
|
|
uint32_t bhsr_0xffffffff;
|
||
|
|
uint32_t bhsr_reserved3;
|
||
|
|
uint32_t bhsr_statsn;
|
||
|
|
uint32_t bhsr_expcmdsn;
|
||
|
|
uint32_t bhsr_maxcmdsn;
|
||
|
|
uint32_t bhsr_datasn_r2tsn;
|
||
|
|
uint32_t bhsr_reserved4;
|
||
|
|
uint32_t bhsr_reserved5;
|
||
|
|
};
|
||
|
|
CTASSERT(sizeof(struct iscsi_bhs_reject) == ISCSI_BHS_SIZE);
|
||
|
|
|
||
|
|
#endif /* !ISCSI_PROTO_H */
|