Layout the signing of OSD's CDB and all-data security modes. The actual
code for signing the data and CDB is missing, but the code flow and the extra
buffer segments are all in place.
Signed-off-by: Boaz Harrosh <bharrosh@xxxxxxxxxxx>
Reviewed-by: Benny Halevy <bhalevy@xxxxxxxxxxx>
---
drivers/scsi/osd/osd_initiator.c | 85 ++++++++++++++++++++++++++++++++++++++
1 files changed, 85 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/osd/osd_initiator.c b/drivers/scsi/osd/osd_initiator.c
index 68cf0ac..367337c 100644
--- a/drivers/scsi/osd/osd_initiator.c
+++ b/drivers/scsi/osd/osd_initiator.c
@@ -107,6 +107,14 @@ static osd_cdb_offset osd_req_encode_offset(struct osd_request *or,
OSDv1_OFFSET_MIN_SHIFT, OSD_OFFSET_MAX_SHIFT);
}
+static struct osd_security_parameters *
+_osd_req_sec_params(struct osd_request *or)
+{
+ struct osd_cdb *ocdb = &or->cdb;
+
+ return &ocdb->v1.sec_params;
+}
+
void osd_dev_init(struct osd_dev *osdd, struct scsi_device *scsi_device)
{
memset(osdd, 0, sizeof(*osdd));
@@ -794,6 +802,64 @@ static int _osd_req_finalize_attr_page(struct osd_request *or)
return ret;
}
+static int _osd_req_finalize_data_integrity(struct osd_request *or,
+ bool has_in, bool has_out, const u8 *cap_key)
+{
+ struct osd_security_parameters *sec_parms = _osd_req_sec_params(or);
+ int ret;
+
+ if (!osd_is_sec_alldata(sec_parms))
+ return 0;
+
+ if (has_out) {
+ struct _osd_req_data_segment seg = {
+ .buff = &or->out_data_integ,
+ .total_bytes = sizeof(or->out_data_integ),
+ };
+ int pad;
+
+ or->out_data_integ.data_bytes = cpu_to_be64(
+ or->out.bio ? or->out.bio->bi_size : 0);
+ or->out_data_integ.set_attributes_bytes = cpu_to_be64(
+ or->set_attr.total_bytes);
+ 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);
+
+ ret = _req_append_segment(or, pad, &seg, or->out.last_seg,
+ &or->out);
+ if (ret)
+ return ret;
+ or->out.last_seg = NULL;
+
+ /* they are now all chained to request sign them all together */
+ osd_sec_sign_data(&or->out_data_integ, or->out.req->bio,
+ cap_key);
+ }
+
+ if (has_in) {
+ struct _osd_req_data_segment seg = {
+ .buff = &or->in_data_integ,
+ .total_bytes = sizeof(or->in_data_integ),
+ };
+ int pad;
+
+ sec_parms->data_in_integrity_check_offset =
+ osd_req_encode_offset(or, or->in.total_bytes, &pad);
+
+ ret = _req_append_segment(or, pad, &seg, or->in.last_seg,
+ &or->in);
+ if (ret)
+ return ret;
+
+ or->in.last_seg = NULL;
+ }
+
+ return 0;
+}
+
/*
* osd_finalize_request and helpers
*/
@@ -914,6 +980,12 @@ int osd_finalize_request(struct osd_request *or,
}
}
+ ret = _osd_req_finalize_data_integrity(or, has_in, has_out, cap_key);
+ if (ret)
+ return ret;
+
+ osd_sec_sign_cdb(&or->cdb, cap_key);
+
or->request->cmd = or->cdb.buff;
or->request->cmd_len = _osd_req_cdb_len(or);
@@ -979,6 +1051,19 @@ void osd_set_caps(struct osd_cdb *cdb, const void *caps)
memcpy(&cdb->v1.caps, caps, OSDv1_CAP_LEN);
}
+bool osd_is_sec_alldata(struct osd_security_parameters *sec_parms)
+{
+ return false;
+}
+
+void osd_sec_sign_cdb(struct osd_cdb *ocdb, const u8 *cap_key)
+{
+}
+
+void osd_sec_sign_data(void *data_integ, struct bio *bio, const u8 *cap_key)
+{
+}
+
/*
* Declared in osd_protocol.h
* 4.12.5 Data-In and Data-Out buffer offsets
--
1.6.0.1
--
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