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tcm_loop: Enable DIF/DIX modes in SCSI host LLD

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This patch updates tcm_loop_driver_probe() to set protection
information using scsi_host_set_prot() and scsi_host_set_guard(),
which currently enabled all modes of DIF/DIX protection, minus
DIX TYPE0.

Also, update tcm_loop_submission_work() to pass struct scsi_cmnd
related protection into target_submit_cmd_map_sgls() during CDB
dispatch.

Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Sagi Grimberg <sagig@mellanox.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Nicholas Bellinger 2013-12-23 20:39:23 +00:00
parent 6e611119b1
commit 59dedde2b6
1 changed files with 10 additions and 2 deletions
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12
drivers/target/loopback/tcm_loop.c
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@ -217,7 +217,8 @@ static void tcm_loop_submission_work(struct work_struct *work)
scsi_bufflen(sc), tcm_loop_sam_attr(sc),
sc->sc_data_direction, 0,
scsi_sglist(sc), scsi_sg_count(sc),
sgl_bidi, sgl_bidi_count, NULL, 0);
sgl_bidi, sgl_bidi_count,
scsi_prot_sglist(sc), scsi_prot_sg_count(sc));
if (rc < 0) {
set_host_byte(sc, DID_NO_CONNECT);
goto out_done;
@ -462,7 +463,7 @@ static int tcm_loop_driver_probe(struct device *dev)
{
struct tcm_loop_hba *tl_hba;
struct Scsi_Host *sh;
int error;
int error, host_prot;
tl_hba = to_tcm_loop_hba(dev);
@ -486,6 +487,13 @@ static int tcm_loop_driver_probe(struct device *dev)
sh->max_channel = 0;
sh->max_cmd_len = TL_SCSI_MAX_CMD_LEN;
host_prot = SHOST_DIF_TYPE1_PROTECTION | SHOST_DIF_TYPE2_PROTECTION |
SHOST_DIF_TYPE3_PROTECTION | SHOST_DIX_TYPE1_PROTECTION |
SHOST_DIX_TYPE2_PROTECTION | SHOST_DIX_TYPE3_PROTECTION;
scsi_host_set_prot(sh, host_prot);
scsi_host_set_guard(sh, SHOST_DIX_GUARD_CRC);
error = scsi_add_host(sh, &tl_hba->dev);
if (error) {
pr_err("%s: scsi_add_host failed\n", __func__);