[SCSI] libosd: OSD2r05: on-the-wire changes for latest OSD2 revision 5.

OSC's OSD2 target: [git clone git://git.open-osd.org/osc-osd/ master]
(Initiator code prior to this patch must use: "git checkout CDB_VER_OSD2r01"
 in the target tree above)

This is a summery of the wire changes:

 * OSDv2_ADDITIONAL_CDB_LENGTH == 192 => 228 (Total CDB is now 236 bytes)
 * Attributes List Element Header grew, so attribute values are 8 bytes
   aligned.
 * Cryptographic keys and signatures are 20 => 32
 * Few new definitions.

(Still missing new standard definitions attribute values, these do not change
 wire format and will be added later when needed)

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

diff --git a/drivers/scsi/osd/osd_initiator.c b/drivers/scsi/osd/osd_initiator.c
index f61ab84..1ce6b24 100644 (file)
--- a/drivers/scsi/osd/osd_initiator.c
+++ b/drivers/scsi/osd/osd_initiator.c
@@ -263,7 +263,12 @@ static int _osd_req_alist_elem_decode(struct osd_request *or,
                oa->attr_page = be32_to_cpu(attr->attr_page);
                oa->attr_id = be32_to_cpu(attr->attr_id);
 
-               oa->val_ptr = attr->attr_val;
+               /* OSD2: For convenience, on empty attributes, we return 8 bytes
+                * of zeros here. This keeps the same behaviour with OSD2r04,
+                * and is nice with null terminating ASCII fields.
+                * oa->val_ptr == NULL marks the end-of-list, or error.
+                */
+               oa->val_ptr = likely(oa->len) ? attr->attr_val : attr->reserved;
        }
        return inc;
 }

diff --git a/include/scsi/osd_protocol.h b/include/scsi/osd_protocol.h
index bbeceeb..62b2ab8 100644 (file)
--- a/include/scsi/osd_protocol.h
+++ b/include/scsi/osd_protocol.h
@@ -24,18 +24,17 @@ 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,*/
+       OSDv2_ADDITIONAL_CDB_LENGTH = 228,
        OSD_ADDITIONAL_CDB_LENGTH =
-               OSDv1_ADDITIONAL_CDB_LENGTH, /* FIXME: Pete rev-001 sup */
+               OSDv2_ADDITIONAL_CDB_LENGTH,
        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_CAP_LEN = 104,
 
        OSD_SYSTEMID_LEN = 20,
        OSDv1_CRYPTO_KEYID_SIZE = 20,
-       /*FIXME: OSDv2_CRYPTO_KEYID_SIZE = 32,*/
-       OSDv2_CRYPTO_KEYID_SIZE = 20,
+       OSDv2_CRYPTO_KEYID_SIZE = 32,
        OSD_CRYPTO_KEYID_SIZE = OSDv2_CRYPTO_KEYID_SIZE,
        OSD_CRYPTO_SEED_SIZE = 4,
        OSD_CRYPTO_NONCE_SIZE = 12,
@@ -166,7 +165,11 @@ struct osd_cdb_head {
                        /* called allocation_length in some commands */
 /*32*/                 __be64  length;
 /*40*/                 __be64  start_address;
-/*48*/                 __be32 list_identifier;/* Rarely used */
+                       union {
+/*48*/                         __be32 list_identifier;/* Rarely used */
+                               /* OSD2r05 5.2.5 CDB continuation length */
+/*48*/                         __be32 cdb_continuation_length;
+                       };
                } __packed v2;
        };
 /*52*/ union { /* selected attributes mode Page/List/Single */
@@ -331,6 +334,7 @@ struct osdv1_attributes_list_element {
 struct osdv2_attributes_list_element {
        __be32 attr_page;
        __be32 attr_id;
+       u8 reserved[6];
        __be16 attr_bytes; /* valid bytes at attr_val without padding */
        u8 attr_val[0];
 } __packed;
@@ -520,7 +524,7 @@ enum osd_capability_bit_masks {
 
        OSD_SEC_CAP_NONE1       = BIT(8),
        OSD_SEC_CAP_NONE2       = BIT(9),
-       OSD_SEC_CAP_NONE3       = BIT(10),
+       OSD_SEC_GBL_REM         = BIT(10), /*v2 only*/
        OSD_SEC_CAP_QUERY       = BIT(11), /*v2 only*/
        OSD_SEC_CAP_M_OBJECT    = BIT(12), /*v2 only*/
        OSD_SEC_CAP_POL_SEC     = BIT(13),
@@ -595,8 +599,7 @@ struct osdv1_capability {
 
 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 */
+       struct osd_cap_object_descriptor od;
 } __packed;
 
 /**