diff options
| -rw-r--r-- | drivers/target/loopback/tcm_loop.c | 15 | ||||
| -rw-r--r-- | drivers/target/target_core_sbc.c | 15 |
2 files changed, 25 insertions, 5 deletions
diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c index c886ad1c39fb..1f4c015e9078 100644 --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -179,7 +179,7 @@ static void tcm_loop_submission_work(struct work_struct *work) struct tcm_loop_hba *tl_hba; struct tcm_loop_tpg *tl_tpg; struct scatterlist *sgl_bidi = NULL; - u32 sgl_bidi_count = 0; + u32 sgl_bidi_count = 0, transfer_length; int rc; tl_hba = *(struct tcm_loop_hba **)shost_priv(sc->device->host); @@ -213,12 +213,21 @@ static void tcm_loop_submission_work(struct work_struct *work) } - if (!scsi_prot_sg_count(sc) && scsi_get_prot_op(sc) != SCSI_PROT_NORMAL) + transfer_length = scsi_transfer_length(sc); + if (!scsi_prot_sg_count(sc) && + scsi_get_prot_op(sc) != SCSI_PROT_NORMAL) { se_cmd->prot_pto = true; + /* + * loopback transport doesn't support + * WRITE_GENERATE, READ_STRIP protection + * information operations, go ahead unprotected. + */ + transfer_length = scsi_bufflen(sc); + } rc = target_submit_cmd_map_sgls(se_cmd, tl_nexus->se_sess, sc->cmnd, &tl_cmd->tl_sense_buf[0], tl_cmd->sc->device->lun, - scsi_bufflen(sc), tcm_loop_sam_attr(sc), + transfer_length, tcm_loop_sam_attr(sc), sc->sc_data_direction, 0, scsi_sglist(sc), scsi_sg_count(sc), sgl_bidi, sgl_bidi_count, diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c index 1d3a626bf24f..bd78d9235ac6 100644 --- a/drivers/target/target_core_sbc.c +++ b/drivers/target/target_core_sbc.c @@ -647,8 +647,19 @@ sbc_check_prot(struct se_device *dev, struct se_cmd *cmd, unsigned char *cdb, cmd->prot_type = dev->dev_attrib.pi_prot_type; cmd->prot_length = dev->prot_length * sectors; - pr_debug("%s: prot_type=%d, prot_length=%d prot_op=%d prot_checks=%d\n", - __func__, cmd->prot_type, cmd->prot_length, + + /** + * In case protection information exists over the wire + * we modify command data length to describe pure data. + * The actual transfer length is data length + protection + * length + **/ + if (protect) + cmd->data_length = sectors * dev->dev_attrib.block_size; + + pr_debug("%s: prot_type=%d, data_length=%d, prot_length=%d " + "prot_op=%d prot_checks=%d\n", + __func__, cmd->prot_type, cmd->data_length, cmd->prot_length, cmd->prot_op, cmd->prot_checks); return true; |