--- /dev/null
+/*
+ * Copyright (c) 2005 Cisco Systems. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#ifndef SCSI_SRP_H
+#define SCSI_SRP_H
+
+/*
+ * Structures and constants for the SCSI RDMA Protocol (SRP) as
+ * defined by the INCITS T10 committee. This file was written using
+ * draft Revision 16a of the SRP standard.
+ */
+
+enum {
+
+ SRP_LOGIN_REQ = 0x00,
+ SRP_TSK_MGMT = 0x01,
+ SRP_CMD = 0x02,
+ SRP_I_LOGOUT = 0x03,
+ SRP_LOGIN_RSP = 0xc0,
+ SRP_RSP = 0xc1,
+ SRP_LOGIN_REJ = 0xc2,
+ SRP_T_LOGOUT = 0x80,
+ SRP_CRED_REQ = 0x81,
+ SRP_AER_REQ = 0x82,
+ SRP_CRED_RSP = 0x41,
+ SRP_AER_RSP = 0x42
+};
+
+enum {
+ SRP_BUF_FORMAT_DIRECT = 1 << 1,
+ SRP_BUF_FORMAT_INDIRECT = 1 << 2
+};
+
+enum {
+ SRP_NO_DATA_DESC = 0,
+ SRP_DATA_DESC_DIRECT = 1,
+ SRP_DATA_DESC_INDIRECT = 2
+};
+
+enum {
+ SRP_TSK_ABORT_TASK = 0x01,
+ SRP_TSK_ABORT_TASK_SET = 0x02,
+ SRP_TSK_CLEAR_TASK_SET = 0x04,
+ SRP_TSK_LUN_RESET = 0x08,
+ SRP_TSK_CLEAR_ACA = 0x40
+};
+
+enum srp_login_rej_reason {
+ SRP_LOGIN_REJ_UNABLE_ESTABLISH_CHANNEL = 0x00010000,
+ SRP_LOGIN_REJ_INSUFFICIENT_RESOURCES = 0x00010001,
+ SRP_LOGIN_REJ_REQ_IT_IU_LENGTH_TOO_LARGE = 0x00010002,
+ SRP_LOGIN_REJ_UNABLE_ASSOCIATE_CHANNEL = 0x00010003,
+ SRP_LOGIN_REJ_UNSUPPORTED_DESCRIPTOR_FMT = 0x00010004,
+ SRP_LOGIN_REJ_MULTI_CHANNEL_UNSUPPORTED = 0x00010005,
+ SRP_LOGIN_REJ_CHANNEL_LIMIT_REACHED = 0x00010006
+};
+
+enum {
+ SRP_REV10_IB_IO_CLASS = 0xff00,
+ SRP_REV16A_IB_IO_CLASS = 0x0100
+};
+
+enum {
+ SRP_TSK_MGMT_COMPLETE = 0x00,
+ SRP_TSK_MGMT_FIELDS_INVALID = 0x02,
+ SRP_TSK_MGMT_NOT_SUPPORTED = 0x04,
+ SRP_TSK_MGMT_FAILED = 0x05
+};
+
+struct srp_direct_buf {
+ uint64_t va;
+ uint32_t key;
+ uint32_t len;
+};
+
+/*
+ * We need the packed attribute because the SRP spec puts the list of
+ * descriptors at an offset of 20, which is not aligned to the size of
+ * struct srp_direct_buf. The whole structure must be packed to avoid
+ * having the 20-byte structure padded to 24 bytes on 64-bit architectures.
+ */
+struct srp_indirect_buf {
+ struct srp_direct_buf table_desc;
+ uint32_t len;
+ struct srp_direct_buf desc_list[0];
+} QEMU_PACKED;
+
+enum {
+ SRP_MULTICHAN_SINGLE = 0,
+ SRP_MULTICHAN_MULTI = 1
+};
+
+struct srp_login_req {
+ uint8_t opcode;
+ uint8_t reserved1[7];
+ uint64_t tag;
+ uint32_t req_it_iu_len;
+ uint8_t reserved2[4];
+ uint16_t req_buf_fmt;
+ uint8_t req_flags;
+ uint8_t reserved3[5];
+ uint8_t initiator_port_id[16];
+ uint8_t target_port_id[16];
+};
+
+/*
+ * The SRP spec defines the size of the LOGIN_RSP structure to be 52
+ * bytes, so it needs to be packed to avoid having it padded to 56
+ * bytes on 64-bit architectures.
+ */
+struct srp_login_rsp {
+ uint8_t opcode;
+ uint8_t reserved1[3];
+ uint32_t req_lim_delta;
+ uint64_t tag;
+ uint32_t max_it_iu_len;
+ uint32_t max_ti_iu_len;
+ uint16_t buf_fmt;
+ uint8_t rsp_flags;
+ uint8_t reserved2[25];
+} QEMU_PACKED;
+
+struct srp_login_rej {
+ uint8_t opcode;
+ uint8_t reserved1[3];
+ uint32_t reason;
+ uint64_t tag;
+ uint8_t reserved2[8];
+ uint16_t buf_fmt;
+ uint8_t reserved3[6];
+};
+
+struct srp_i_logout {
+ uint8_t opcode;
+ uint8_t reserved[7];
+ uint64_t tag;
+};
+
+struct srp_t_logout {
+ uint8_t opcode;
+ uint8_t sol_not;
+ uint8_t reserved[2];
+ uint32_t reason;
+ uint64_t tag;
+};
+
+/*
+ * We need the packed attribute because the SRP spec only aligns the
+ * 8-byte LUN field to 4 bytes.
+ */
+struct srp_tsk_mgmt {
+ uint8_t opcode;
+ uint8_t sol_not;
+ uint8_t reserved1[6];
+ uint64_t tag;
+ uint8_t reserved2[4];
+ uint64_t lun;
+ uint8_t reserved3[2];
+ uint8_t tsk_mgmt_func;
+ uint8_t reserved4;
+ uint64_t task_tag;
+ uint8_t reserved5[8];
+} QEMU_PACKED;
+
+/*
+ * We need the packed attribute because the SRP spec only aligns the
+ * 8-byte LUN field to 4 bytes.
+ */
+struct srp_cmd {
+ uint8_t opcode;
+ uint8_t sol_not;
+ uint8_t reserved1[3];
+ uint8_t buf_fmt;
+ uint8_t data_out_desc_cnt;
+ uint8_t data_in_desc_cnt;
+ uint64_t tag;
+ uint8_t reserved2[4];
+ uint64_t lun;
+ uint8_t reserved3;
+ uint8_t task_attr;
+ uint8_t reserved4;
+ uint8_t add_cdb_len;
+ uint8_t cdb[16];
+ uint8_t add_data[0];
+} QEMU_PACKED;
+
+enum {
+ SRP_RSP_FLAG_RSPVALID = 1 << 0,
+ SRP_RSP_FLAG_SNSVALID = 1 << 1,
+ SRP_RSP_FLAG_DOOVER = 1 << 2,
+ SRP_RSP_FLAG_DOUNDER = 1 << 3,
+ SRP_RSP_FLAG_DIOVER = 1 << 4,
+ SRP_RSP_FLAG_DIUNDER = 1 << 5
+};
+
+/*
+ * The SRP spec defines the size of the RSP structure to be 36 bytes,
+ * so it needs to be packed to avoid having it padded to 40 bytes on
+ * 64-bit architectures.
+ */
+struct srp_rsp {
+ uint8_t opcode;
+ uint8_t sol_not;
+ uint8_t reserved1[2];
+ uint32_t req_lim_delta;
+ uint64_t tag;
+ uint8_t reserved2[2];
+ uint8_t flags;
+ uint8_t status;
+ uint32_t data_out_res_cnt;
+ uint32_t data_in_res_cnt;
+ uint32_t sense_data_len;
+ uint32_t resp_data_len;
+ uint8_t data[0];
+} QEMU_PACKED;
+
+#endif /* SCSI_SRP_H */
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