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[SCSI] libosd: OSD2r05: OSD_CRYPTO_KEYID_SIZE will grow 20 => 32 bytes
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In OSD2r04 draft, cryptographic key size changed to 32 bytes from
OSD1's 20 bytes. This causes a couple of on-the-wire structures
to change, including the CDB.

In this patch the OSD1/OSD2 handling is separated out in regard
to affected structures, but on-the-wire is still the same. All
on the wire changes will be submitted in one patch for bisect-ability.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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Boaz Harrosh authored and James Bottomley committed Apr 27, 2009
1 parent 71f32e3 commit f8d3a64
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Showing 2 changed files with 68 additions and 17 deletions.
30 changes: 24 additions & 6 deletions drivers/scsi/osd/osd_initiator.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -345,9 +345,9 @@ _osd_req_sec_params(struct osd_request *or)
struct osd_cdb *ocdb = &or->cdb;

if (osd_req_is_ver1(or))
return &ocdb->v1.sec_params;
return (struct osd_security_parameters *)&ocdb->v1.sec_params;
else
return &ocdb->v2.sec_params;
return (struct osd_security_parameters *)&ocdb->v2.sec_params;
}

void osd_dev_init(struct osd_dev *osdd, struct scsi_device *scsi_device)
Expand Down Expand Up @@ -1209,6 +1209,24 @@ static int _osd_req_finalize_attr_page(struct osd_request *or)
return ret;
}

static inline void osd_sec_parms_set_out_offset(bool is_v1,
struct osd_security_parameters *sec_parms, osd_cdb_offset offset)
{
if (is_v1)
sec_parms->v1.data_out_integrity_check_offset = offset;
else
sec_parms->v2.data_out_integrity_check_offset = offset;
}

static inline void osd_sec_parms_set_in_offset(bool is_v1,
struct osd_security_parameters *sec_parms, osd_cdb_offset offset)
{
if (is_v1)
sec_parms->v1.data_in_integrity_check_offset = offset;
else
sec_parms->v2.data_in_integrity_check_offset = offset;
}

static int _osd_req_finalize_data_integrity(struct osd_request *or,
bool has_in, bool has_out, const u8 *cap_key)
{
Expand All @@ -1232,8 +1250,8 @@ static int _osd_req_finalize_data_integrity(struct osd_request *or,
or->out_data_integ.get_attributes_bytes = cpu_to_be64(
or->enc_get_attr.total_bytes);

sec_parms->data_out_integrity_check_offset =
osd_req_encode_offset(or, or->out.total_bytes, &pad);
osd_sec_parms_set_out_offset(osd_req_is_ver1(or), sec_parms,
osd_req_encode_offset(or, or->out.total_bytes, &pad));

ret = _req_append_segment(or, pad, &seg, or->out.last_seg,
&or->out);
Expand All @@ -1253,8 +1271,8 @@ static int _osd_req_finalize_data_integrity(struct osd_request *or,
};
unsigned pad;

sec_parms->data_in_integrity_check_offset =
osd_req_encode_offset(or, or->in.total_bytes, &pad);
osd_sec_parms_set_in_offset(osd_req_is_ver1(or), sec_parms,
osd_req_encode_offset(or, or->in.total_bytes, &pad));

ret = _req_append_segment(or, pad, &seg, or->in.last_seg,
&or->in);
Expand Down
55 changes: 44 additions & 11 deletions include/scsi/osd_protocol.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -33,8 +33,10 @@ enum {
OSD_CAP_LEN = OSDv1_CAP_LEN,/* FIXME: Pete rev-001 sup */

OSD_SYSTEMID_LEN = 20,
OSD_CRYPTO_KEYID_SIZE = 20,
OSDv1_CRYPTO_KEYID_SIZE = 20,
/*FIXME: OSDv2_CRYPTO_KEYID_SIZE = 32,*/
OSDv2_CRYPTO_KEYID_SIZE = 20,
OSD_CRYPTO_KEYID_SIZE = OSDv2_CRYPTO_KEYID_SIZE,
OSD_CRYPTO_SEED_SIZE = 4,
OSD_CRYPTO_NONCE_SIZE = 12,
OSD_MAX_SENSE_LEN = 252, /* from SPC-3 */
Expand Down Expand Up @@ -204,29 +206,40 @@ struct osd_cdb_head {
/*80*/

/*160 v1*/
/*184 v2*/
struct osd_security_parameters {
/*160*/u8 integrity_check_value[OSD_CRYPTO_KEYID_SIZE];
struct osdv1_security_parameters {
/*160*/u8 integrity_check_value[OSDv1_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 */
/*184 v2*/
struct osdv2_security_parameters {
/*184*/u8 integrity_check_value[OSDv2_CRYPTO_KEYID_SIZE];
/*216*/u8 request_nonce[OSD_CRYPTO_NONCE_SIZE];
/*228*/osd_cdb_offset data_in_integrity_check_offset;
/*232*/osd_cdb_offset data_out_integrity_check_offset;
} __packed;
/*236 v2*/

struct osd_security_parameters {
union {
struct osdv1_security_parameters v1;
struct osdv2_security_parameters v2;
};
};

struct osdv1_cdb {
struct osd_cdb_head h;
u8 caps[OSDv1_CAP_LEN];
struct osd_security_parameters sec_params;
struct osdv1_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 */
struct osdv2_security_parameters sec_params;
} __packed;

struct osd_cdb {
Expand Down Expand Up @@ -429,15 +442,35 @@ struct osd_data_out_integrity_info {
__be64 data_bytes;
__be64 set_attributes_bytes;
__be64 get_attributes_bytes;
__be64 integrity_check_value;
__u8 integrity_check_value[OSD_CRYPTO_KEYID_SIZE];
} __packed;

/* Same osd_data_out_integrity_info is used for OSD2/OSD1. The only difference
* Is the sizeof the structure since in OSD1 the last array is smaller. Use
* below for version independent handling of this structure
*/
static inline int osd_data_out_integrity_info_sizeof(bool is_ver1)
{
return sizeof(struct osd_data_out_integrity_info) -
(is_ver1 * (OSDv2_CRYPTO_KEYID_SIZE - OSDv1_CRYPTO_KEYID_SIZE));
}

struct osd_data_in_integrity_info {
__be64 data_bytes;
__be64 retrieved_attributes_bytes;
__be64 integrity_check_value;
__u8 integrity_check_value[OSD_CRYPTO_KEYID_SIZE];
} __packed;

/* Same osd_data_in_integrity_info is used for OSD2/OSD1. The only difference
* Is the sizeof the structure since in OSD1 the last array is smaller. Use
* below for version independent handling of this structure
*/
static inline int osd_data_in_integrity_info_sizeof(bool is_ver1)
{
return sizeof(struct osd_data_in_integrity_info) -
(is_ver1 * (OSDv2_CRYPTO_KEYID_SIZE - OSDv1_CRYPTO_KEYID_SIZE));
}

struct osd_timestamp {
u8 time[6]; /* number of milliseconds since 1/1/1970 UT (big endian) */
} __packed;
Expand Down

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