linux/include/scsi/osd_protocol.h
Boaz Harrosh c6572c9837 [SCSI] libosd: OSD version 2 Support
Add support for OSD2 at run time. It is now possible to run with
both OSDv1 and OSDv2 targets at the same time. The actual detection
should be preformed by the security manager, as the version is encoded
in the capability structure.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Reviewed-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-03-12 12:58:08 -05:00

580 lines
15 KiB
C

/*
* osd_protocol.h - OSD T10 standard C definitions.
*
* Copyright (C) 2008 Panasas Inc. All rights reserved.
*
* Authors:
* Boaz Harrosh <bharrosh@panasas.com>
* Benny Halevy <bhalevy@panasas.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
*
* This file contains types and constants that are defined by the protocol
* Note: All names and symbols are taken from the OSD standard's text.
*/
#ifndef __OSD_PROTOCOL_H__
#define __OSD_PROTOCOL_H__
#include <linux/types.h>
#include <asm/unaligned.h>
#include <scsi/scsi.h>
enum {
OSDv1_ADDITIONAL_CDB_LENGTH = 192,
OSDv1_TOTAL_CDB_LEN = OSDv1_ADDITIONAL_CDB_LENGTH + 8,
OSDv1_CAP_LEN = 80,
/* Latest supported version */
/* OSD_ADDITIONAL_CDB_LENGTH = 216,*/
OSD_ADDITIONAL_CDB_LENGTH =
OSDv1_ADDITIONAL_CDB_LENGTH, /* FIXME: Pete rev-001 sup */
OSD_TOTAL_CDB_LEN = OSD_ADDITIONAL_CDB_LENGTH + 8,
/* OSD_CAP_LEN = 104,*/
OSD_CAP_LEN = OSDv1_CAP_LEN,/* FIXME: Pete rev-001 sup */
OSD_SYSTEMID_LEN = 20,
OSD_CRYPTO_KEYID_SIZE = 20,
/*FIXME: OSDv2_CRYPTO_KEYID_SIZE = 32,*/
OSD_CRYPTO_SEED_SIZE = 4,
OSD_CRYPTO_NONCE_SIZE = 12,
OSD_MAX_SENSE_LEN = 252, /* from SPC-3 */
OSD_PARTITION_FIRST_ID = 0x10000,
OSD_OBJECT_FIRST_ID = 0x10000,
};
/* (osd-r10 5.2.4)
* osd2r03: 5.2.3 Caching control bits
*/
enum osd_options_byte {
OSD_CDB_FUA = 0x08, /* Force Unit Access */
OSD_CDB_DPO = 0x10, /* Disable Page Out */
};
/*
* osd2r03: 5.2.5 Isolation.
* First 3 bits, V2-only.
* Also for attr 110h "default isolation method" at Root Information page
*/
enum osd_options_byte_isolation {
OSD_ISOLATION_DEFAULT = 0,
OSD_ISOLATION_NONE = 1,
OSD_ISOLATION_STRICT = 2,
OSD_ISOLATION_RANGE = 4,
OSD_ISOLATION_FUNCTIONAL = 5,
OSD_ISOLATION_VENDOR = 7,
};
/* (osd-r10: 6.7)
* osd2r03: 6.8 FLUSH, FLUSH COLLECTION, FLUSH OSD, FLUSH PARTITION
*/
enum osd_options_flush_scope_values {
OSD_CDB_FLUSH_ALL = 0,
OSD_CDB_FLUSH_ATTR_ONLY = 1,
OSD_CDB_FLUSH_ALL_RECURSIVE = 2,
/* V2-only */
OSD_CDB_FLUSH_ALL_RANGE = 2,
};
/* osd2r03: 5.2.10 Timestamps control */
enum {
OSD_CDB_NORMAL_TIMESTAMPS = 0,
OSD_CDB_BYPASS_TIMESTAMPS = 0x7f,
};
/* (osd-r10: 5.2.2.1)
* osd2r03: 5.2.4.1 Get and set attributes CDB format selection
* 2 bits at second nibble of command_specific_options byte
*/
enum osd_attributes_mode {
/* V2-only */
OSD_CDB_SET_ONE_ATTR = 0x10,
OSD_CDB_GET_ATTR_PAGE_SET_ONE = 0x20,
OSD_CDB_GET_SET_ATTR_LISTS = 0x30,
OSD_CDB_GET_SET_ATTR_MASK = 0x30,
};
/* (osd-r10: 4.12.5)
* osd2r03: 4.14.5 Data-In and Data-Out buffer offsets
* byte offset = mantissa * (2^(exponent+8))
* struct {
* unsigned mantissa: 28;
* int exponent: 04;
* }
*/
typedef __be32 __bitwise osd_cdb_offset;
enum {
OSD_OFFSET_UNUSED = 0xFFFFFFFF,
OSD_OFFSET_MAX_BITS = 28,
OSDv1_OFFSET_MIN_SHIFT = 8,
OSD_OFFSET_MIN_SHIFT = 3,
OSD_OFFSET_MAX_SHIFT = 16,
};
/* Return the smallest allowed encoded offset that contains @offset.
*
* The actual encoded offset returned is @offset + *padding.
* (up to max_shift, non-inclusive)
*/
osd_cdb_offset __osd_encode_offset(u64 offset, unsigned *padding,
int min_shift, int max_shift);
/* Minimum alignment is 256 bytes
* Note: Seems from std v1 that exponent can be from 0+8 to 0xE+8 (inclusive)
* which is 8 to 23 but IBM code restricts it to 16, so be it.
*/
static inline osd_cdb_offset osd_encode_offset_v1(u64 offset, unsigned *padding)
{
return __osd_encode_offset(offset, padding,
OSDv1_OFFSET_MIN_SHIFT, OSD_OFFSET_MAX_SHIFT);
}
/* Minimum 8 bytes alignment
* Same as v1 but since exponent can be signed than a less than
* 256 alignment can be reached with small offsets (<2GB)
*/
static inline osd_cdb_offset osd_encode_offset_v2(u64 offset, unsigned *padding)
{
return __osd_encode_offset(offset, padding,
OSD_OFFSET_MIN_SHIFT, OSD_OFFSET_MAX_SHIFT);
}
/* osd2r03: 5.2.1 Overview */
struct osd_cdb_head {
struct scsi_varlen_cdb_hdr varlen_cdb;
/*10*/ u8 options;
u8 command_specific_options;
u8 timestamp_control;
/*13*/ u8 reserved1[3];
/*16*/ __be64 partition;
/*24*/ __be64 object;
/*32*/ union { /* V1 vs V2 alignment differences */
struct __osdv1_cdb_addr_len {
/*32*/ __be32 list_identifier;/* Rarely used */
/*36*/ __be64 length;
/*44*/ __be64 start_address;
} __packed v1;
struct __osdv2_cdb_addr_len {
/* called allocation_length in some commands */
/*32*/ __be64 length;
/*40*/ __be64 start_address;
/*48*/ __be32 list_identifier;/* Rarely used */
} __packed v2;
};
/*52*/ union { /* selected attributes mode Page/List/Single */
struct osd_attributes_page_mode {
/*52*/ __be32 get_attr_page;
/*56*/ __be32 get_attr_alloc_length;
/*60*/ osd_cdb_offset get_attr_offset;
/*64*/ __be32 set_attr_page;
/*68*/ __be32 set_attr_id;
/*72*/ __be32 set_attr_length;
/*76*/ osd_cdb_offset set_attr_offset;
/*80*/ } __packed attrs_page;
struct osd_attributes_list_mode {
/*52*/ __be32 get_attr_desc_bytes;
/*56*/ osd_cdb_offset get_attr_desc_offset;
/*60*/ __be32 get_attr_alloc_length;
/*64*/ osd_cdb_offset get_attr_offset;
/*68*/ __be32 set_attr_bytes;
/*72*/ osd_cdb_offset set_attr_offset;
__be32 not_used;
/*80*/ } __packed attrs_list;
/* osd2r03:5.2.4.2 Set one attribute value using CDB fields */
struct osd_attributes_cdb_mode {
/*52*/ __be32 set_attr_page;
/*56*/ __be32 set_attr_id;
/*60*/ __be16 set_attr_len;
/*62*/ u8 set_attr_val[18];
/*80*/ } __packed attrs_cdb;
/*52*/ u8 get_set_attributes_parameters[28];
};
} __packed;
/*80*/
/*160 v1*/
/*184 v2*/
struct osd_security_parameters {
/*160*/u8 integrity_check_value[OSD_CRYPTO_KEYID_SIZE];
/*180*/u8 request_nonce[OSD_CRYPTO_NONCE_SIZE];
/*192*/osd_cdb_offset data_in_integrity_check_offset;
/*196*/osd_cdb_offset data_out_integrity_check_offset;
} __packed;
/*200 v1*/
/*224 v2*/
/* FIXME: osdv2_security_parameters */
struct osdv1_cdb {
struct osd_cdb_head h;
u8 caps[OSDv1_CAP_LEN];
struct osd_security_parameters sec_params;
} __packed;
struct osdv2_cdb {
struct osd_cdb_head h;
u8 caps[OSD_CAP_LEN];
struct osd_security_parameters sec_params;
/* FIXME: osdv2_security_parameters */
} __packed;
struct osd_cdb {
union {
struct osdv1_cdb v1;
struct osdv2_cdb v2;
u8 buff[OSD_TOTAL_CDB_LEN];
};
} __packed;
static inline struct osd_cdb_head *osd_cdb_head(struct osd_cdb *ocdb)
{
return (struct osd_cdb_head *)ocdb->buff;
}
/* define both version actions
* Ex name = FORMAT_OSD we have OSD_ACT_FORMAT_OSD && OSDv1_ACT_FORMAT_OSD
*/
#define OSD_ACT___(Name, Num) \
OSD_ACT_##Name = __constant_cpu_to_be16(0x8880 + Num), \
OSDv1_ACT_##Name = __constant_cpu_to_be16(0x8800 + Num),
/* V2 only actions */
#define OSD_ACT_V2(Name, Num) \
OSD_ACT_##Name = __constant_cpu_to_be16(0x8880 + Num),
#define OSD_ACT_V1_V2(Name, Num1, Num2) \
OSD_ACT_##Name = __constant_cpu_to_be16(Num2), \
OSDv1_ACT_##Name = __constant_cpu_to_be16(Num1),
enum osd_service_actions {
OSD_ACT_V2(OBJECT_STRUCTURE_CHECK, 0x00)
OSD_ACT___(FORMAT_OSD, 0x01)
OSD_ACT___(CREATE, 0x02)
OSD_ACT___(LIST, 0x03)
OSD_ACT_V2(PUNCH, 0x04)
OSD_ACT___(READ, 0x05)
OSD_ACT___(WRITE, 0x06)
OSD_ACT___(APPEND, 0x07)
OSD_ACT___(FLUSH, 0x08)
OSD_ACT_V2(CLEAR, 0x09)
OSD_ACT___(REMOVE, 0x0A)
OSD_ACT___(CREATE_PARTITION, 0x0B)
OSD_ACT___(REMOVE_PARTITION, 0x0C)
OSD_ACT___(GET_ATTRIBUTES, 0x0E)
OSD_ACT___(SET_ATTRIBUTES, 0x0F)
OSD_ACT___(CREATE_AND_WRITE, 0x12)
OSD_ACT___(CREATE_COLLECTION, 0x15)
OSD_ACT___(REMOVE_COLLECTION, 0x16)
OSD_ACT___(LIST_COLLECTION, 0x17)
OSD_ACT___(SET_KEY, 0x18)
OSD_ACT___(SET_MASTER_KEY, 0x19)
OSD_ACT___(FLUSH_COLLECTION, 0x1A)
OSD_ACT___(FLUSH_PARTITION, 0x1B)
OSD_ACT___(FLUSH_OSD, 0x1C)
OSD_ACT_V2(QUERY, 0x20)
OSD_ACT_V2(REMOVE_MEMBER_OBJECTS, 0x21)
OSD_ACT_V2(GET_MEMBER_ATTRIBUTES, 0x22)
OSD_ACT_V2(SET_MEMBER_ATTRIBUTES, 0x23)
OSD_ACT_V2(READ_MAP, 0x31)
OSD_ACT_V1_V2(PERFORM_SCSI_COMMAND, 0x8F7E, 0x8F7C)
OSD_ACT_V1_V2(SCSI_TASK_MANAGEMENT, 0x8F7F, 0x8F7D)
/* 0x8F80 to 0x8FFF are Vendor specific */
};
/* osd2r03: 7.1.3.2 List entry format for retrieving attributes */
struct osd_attributes_list_attrid {
__be32 attr_page;
__be32 attr_id;
} __packed;
/*
* osd2r03: 7.1.3.3 List entry format for retrieved attributes and
* for setting attributes
* NOTE: v2 is 8-bytes aligned, v1 is not aligned.
*/
struct osd_attributes_list_element {
__be32 attr_page;
__be32 attr_id;
__be16 attr_bytes;
u8 attr_val[0];
} __packed;
enum {
OSDv1_ATTRIBUTES_ELEM_ALIGN = 1,
OSD_ATTRIBUTES_ELEM_ALIGN = 8,
};
enum {
OSD_ATTR_LIST_ALL_PAGES = 0xFFFFFFFF,
OSD_ATTR_LIST_ALL_IN_PAGE = 0xFFFFFFFF,
};
static inline unsigned osdv1_attr_list_elem_size(unsigned len)
{
return ALIGN(len + sizeof(struct osd_attributes_list_element),
OSDv1_ATTRIBUTES_ELEM_ALIGN);
}
static inline unsigned osdv2_attr_list_elem_size(unsigned len)
{
return ALIGN(len + sizeof(struct osd_attributes_list_element),
OSD_ATTRIBUTES_ELEM_ALIGN);
}
/*
* osd2r03: 7.1.3 OSD attributes lists (Table 184) — List type values
*/
enum osd_attr_list_types {
OSD_ATTR_LIST_GET = 0x1, /* descriptors only */
OSD_ATTR_LIST_SET_RETRIEVE = 0x9, /*descriptors/values variable-length*/
OSD_V2_ATTR_LIST_MULTIPLE = 0xE, /* ver2, Multiple Objects lists*/
OSD_V1_ATTR_LIST_CREATE_MULTIPLE = 0xF,/*ver1, used by create_multple*/
};
/* osd2r03: 7.1.3.4 Multi-object retrieved attributes format */
struct osd_attributes_list_multi_header {
__be64 object_id;
u8 object_type; /* object_type enum below */
u8 reserved[5];
__be16 list_bytes;
/* followed by struct osd_attributes_list_element's */
};
struct osdv1_attributes_list_header {
u8 type; /* low 4-bit only */
u8 pad;
__be16 list_bytes; /* Initiator shall set to Zero. Only set by target */
/*
* type=9 followed by struct osd_attributes_list_element's
* type=E followed by struct osd_attributes_list_multi_header's
*/
} __packed;
static inline unsigned osdv1_list_size(struct osdv1_attributes_list_header *h)
{
return be16_to_cpu(h->list_bytes);
}
struct osdv2_attributes_list_header {
u8 type; /* lower 4-bits only */
u8 pad[3];
/*4*/ __be32 list_bytes; /* Initiator shall set to zero. Only set by target */
/*
* type=9 followed by struct osd_attributes_list_element's
* type=E followed by struct osd_attributes_list_multi_header's
*/
} __packed;
static inline unsigned osdv2_list_size(struct osdv2_attributes_list_header *h)
{
return be32_to_cpu(h->list_bytes);
}
/* (osd-r10 6.13)
* osd2r03: 6.15 LIST (Table 79) LIST command parameter data.
* for root_lstchg below
*/
enum {
OSD_OBJ_ID_LIST_PAR = 0x1, /* V1-only. Not used in V2 */
OSD_OBJ_ID_LIST_LSTCHG = 0x2,
};
/*
* osd2r03: 6.15.2 LIST command parameter data
* (Also for LIST COLLECTION)
*/
struct osd_obj_id_list {
__be64 list_bytes; /* bytes in list excluding list_bytes (-8) */
__be64 continuation_id;
__be32 list_identifier;
u8 pad[3];
u8 root_lstchg;
__be64 object_ids[0];
} __packed;
static inline bool osd_is_obj_list_done(struct osd_obj_id_list *list,
bool *is_changed)
{
*is_changed = (0 != (list->root_lstchg & OSD_OBJ_ID_LIST_LSTCHG));
return 0 != list->continuation_id;
}
/*
* osd2r03: 4.12.4.5 The ALLDATA security method
*/
struct osd_data_out_integrity_info {
__be64 data_bytes;
__be64 set_attributes_bytes;
__be64 get_attributes_bytes;
__be64 integrity_check_value;
} __packed;
struct osd_data_in_integrity_info {
__be64 data_bytes;
__be64 retrieved_attributes_bytes;
__be64 integrity_check_value;
} __packed;
struct osd_timestamp {
u8 time[6]; /* number of milliseconds since 1/1/1970 UT (big endian) */
} __packed;
/* FIXME: define helper functions to convert to/from osd time format */
/*
* Capability & Security definitions
* osd2r03: 4.11.2.2 Capability format
* osd2r03: 5.2.8 Security parameters
*/
struct osd_key_identifier {
u8 id[7]; /* if you know why 7 please email bharrosh@panasas.com */
} __packed;
/* for osd_capability.format */
enum {
OSD_SEC_CAP_FORMAT_NO_CAPS = 0,
OSD_SEC_CAP_FORMAT_VER1 = 1,
OSD_SEC_CAP_FORMAT_VER2 = 2,
};
/* security_method */
enum {
OSD_SEC_NOSEC = 0,
OSD_SEC_CAPKEY = 1,
OSD_SEC_CMDRSP = 2,
OSD_SEC_ALLDATA = 3,
};
enum object_type {
OSD_SEC_OBJ_ROOT = 0x1,
OSD_SEC_OBJ_PARTITION = 0x2,
OSD_SEC_OBJ_COLLECTION = 0x40,
OSD_SEC_OBJ_USER = 0x80,
};
enum osd_capability_bit_masks {
OSD_SEC_CAP_APPEND = BIT(0),
OSD_SEC_CAP_OBJ_MGMT = BIT(1),
OSD_SEC_CAP_REMOVE = BIT(2),
OSD_SEC_CAP_CREATE = BIT(3),
OSD_SEC_CAP_SET_ATTR = BIT(4),
OSD_SEC_CAP_GET_ATTR = BIT(5),
OSD_SEC_CAP_WRITE = BIT(6),
OSD_SEC_CAP_READ = BIT(7),
OSD_SEC_CAP_NONE1 = BIT(8),
OSD_SEC_CAP_NONE2 = BIT(9),
OSD_SEC_CAP_NONE3 = BIT(10),
OSD_SEC_CAP_QUERY = BIT(11), /*v2 only*/
OSD_SEC_CAP_M_OBJECT = BIT(12), /*v2 only*/
OSD_SEC_CAP_POL_SEC = BIT(13),
OSD_SEC_CAP_GLOBAL = BIT(14),
OSD_SEC_CAP_DEV_MGMT = BIT(15),
};
/* for object_descriptor_type (hi nibble used) */
enum {
OSD_SEC_OBJ_DESC_NONE = 0, /* Not allowed */
OSD_SEC_OBJ_DESC_OBJ = 1 << 4, /* v1: also collection */
OSD_SEC_OBJ_DESC_PAR = 2 << 4, /* also root */
OSD_SEC_OBJ_DESC_COL = 3 << 4, /* v2 only */
};
/* (osd-r10:4.9.2.2)
* osd2r03:4.11.2.2 Capability format
*/
struct osd_capability_head {
u8 format; /* low nibble */
u8 integrity_algorithm__key_version; /* MAKE_BYTE(integ_alg, key_ver) */
u8 security_method;
u8 reserved1;
/*04*/ struct osd_timestamp expiration_time;
/*10*/ u8 audit[20];
/*30*/ u8 discriminator[12];
/*42*/ struct osd_timestamp object_created_time;
/*48*/ u8 object_type;
/*49*/ u8 permissions_bit_mask[5];
/*54*/ u8 reserved2;
/*55*/ u8 object_descriptor_type; /* high nibble */
} __packed;
/*56 v1*/
struct osdv1_cap_object_descriptor {
union {
struct {
/*56*/ __be32 policy_access_tag;
/*60*/ __be64 allowed_partition_id;
/*68*/ __be64 allowed_object_id;
/*76*/ __be32 reserved;
} __packed obj_desc;
/*56*/ u8 object_descriptor[24];
};
} __packed;
/*80 v1*/
/*56 v2*/
struct osd_cap_object_descriptor {
union {
struct {
/*56*/ __be32 allowed_attributes_access;
/*60*/ __be32 policy_access_tag;
/*64*/ __be16 boot_epoch;
/*66*/ u8 reserved[6];
/*72*/ __be64 allowed_partition_id;
/*80*/ __be64 allowed_object_id;
/*88*/ __be64 allowed_range_length;
/*96*/ __be64 allowed_range_start;
} __packed obj_desc;
/*56*/ u8 object_descriptor[48];
};
} __packed;
/*104 v2*/
struct osdv1_capability {
struct osd_capability_head h;
struct osdv1_cap_object_descriptor od;
} __packed;
struct osd_capability {
struct osd_capability_head h;
/* struct osd_cap_object_descriptor od;*/
struct osdv1_cap_object_descriptor od; /* FIXME: Pete rev-001 sup */
} __packed;
/**
* osd_sec_set_caps - set cap-bits into the capabilities header
*
* @cap: The osd_capability_head to set cap bits to.
* @bit_mask: Use an ORed list of enum osd_capability_bit_masks values
*
* permissions_bit_mask is unaligned use below to set into caps
* in a version independent way
*/
static inline void osd_sec_set_caps(struct osd_capability_head *cap,
u16 bit_mask)
{
/*
*Note: The bits above are defined LE order this is because this way
* they can grow in the future to more then 16, and still retain
* there constant values.
*/
put_unaligned_le16(bit_mask, &cap->permissions_bit_mask);
}
#endif /* ndef __OSD_PROTOCOL_H__ */