From e9da4d7f731dafc2b93ce7b31aa09c4d935ef978 Mon Sep 17 00:00:00 2001
From: Boaz Harrosh <bharrosh@panasas.com>
Date: Sun, 19 Apr 2009 19:17:54 +0300
Subject: [PATCH] [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>
---
drivers/scsi/osd/osd_initiator.c | 7 ++++++-
include/scsi/osd_protocol.h | 23 +++++++++++++----------
2 files changed, 19 insertions(+), 11 deletions(-)
diff --git a/drivers/scsi/osd/osd_initiator.c b/drivers/scsi/osd/osd_initiator.c
index f61ab84ad20bb..1ce6b24abab29 100644
--- 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 bbeceeb0e553e..62b2ab8c69d45 100644
--- 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;
/**
--
2.30.2