From: Mike Christie Date: Wed, 31 May 2017 15:52:41 -0500 Subject: pscsi: finish cmd processing from pscsi_req_done Git-commit: dce6ce8cfb842c333094c3eb2e3ea66b1edb02ad Patch-mainline: v4.13-rc1 References: fate#323946 This patch performs the pscsi_transport_complete operations from pscsi_req_done. It looks like the only difference the transport_complete callout provides is that it is called under t_state_lock which seems to only be needed for the SCF_TRANSPORT_TASK_SENSE bit handling. We can now use transport_copy_sense_to_cmd to handle the se_cmd sense bits, and we can then drop the code where we have to copy the request info to the pscsi_plugin_task for transport_complete use. Signed-off-by: Mike Christie Signed-off-by: Nicholas Bellinger Acked-by: Lee Duncan --- drivers/target/target_core_pscsi.c | 38 ++++++++++++++++---------------------- drivers/target/target_core_pscsi.h | 4 ---- 2 files changed, 16 insertions(+), 26 deletions(-) diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c index 7d944b23aeee..fb40f64072f6 100644 --- a/drivers/target/target_core_pscsi.c +++ b/drivers/target/target_core_pscsi.c @@ -599,12 +599,11 @@ static void pscsi_destroy_device(struct se_device *dev) } } -static void pscsi_transport_complete(struct se_cmd *cmd, struct scatterlist *sg, - unsigned char *sense_buffer) +static void pscsi_complete_cmd(struct se_cmd *cmd, u8 scsi_status, + unsigned char *req_sense) { struct pscsi_dev_virt *pdv = PSCSI_DEV(cmd->se_dev); struct scsi_device *sd = pdv->pdv_sd; - int result; struct pscsi_plugin_task *pt = cmd->priv; unsigned char *cdb; /* @@ -615,7 +614,6 @@ static void pscsi_transport_complete(struct se_cmd *cmd, struct scatterlist *sg, return; cdb = &pt->pscsi_cdb[0]; - result = pt->pscsi_result; /* * Hack to make sure that Write-Protect modepage is set if R/O mode is * forced. @@ -624,7 +622,7 @@ static void pscsi_transport_complete(struct se_cmd *cmd, struct scatterlist *sg, goto after_mode_sense; if (((cdb[0] == MODE_SENSE) || (cdb[0] == MODE_SENSE_10)) && - (status_byte(result) << 1) == SAM_STAT_GOOD) { + scsi_status == SAM_STAT_GOOD) { bool read_only = target_lun_is_rdonly(cmd); if (read_only) { @@ -659,12 +657,12 @@ static void pscsi_transport_complete(struct se_cmd *cmd, struct scatterlist *sg, * storage engine. */ if (((cdb[0] == MODE_SELECT) || (cdb[0] == MODE_SELECT_10)) && - (status_byte(result) << 1) == SAM_STAT_GOOD) { + scsi_status == SAM_STAT_GOOD) { unsigned char *buf; u16 bdl; u32 blocksize; - buf = sg_virt(&sg[0]); + buf = sg_virt(&cmd->t_data_sg[0]); if (!buf) { pr_err("Unable to get buf for scatterlist\n"); goto after_mode_select; @@ -687,10 +685,8 @@ static void pscsi_transport_complete(struct se_cmd *cmd, struct scatterlist *sg, } after_mode_select: - if (sense_buffer && (status_byte(result) & CHECK_CONDITION)) { - memcpy(sense_buffer, pt->pscsi_sense, TRANSPORT_SENSE_BUFFER); - cmd->se_cmd_flags |= SCF_TRANSPORT_TASK_SENSE; - } + if (scsi_status == SAM_STAT_CHECK_CONDITION) + transport_copy_sense_to_cmd(cmd, req_sense); } enum { @@ -1049,30 +1045,29 @@ static void pscsi_req_done(struct request *req, int uptodate) { struct se_cmd *cmd = req->end_io_data; struct pscsi_plugin_task *pt = cmd->priv; + int result = scsi_req(req)->result; + u8 scsi_status = status_byte(result) << 1; - pt->pscsi_result = scsi_req(req)->result; - pt->pscsi_resid = scsi_req(req)->resid_len; - - cmd->scsi_status = status_byte(pt->pscsi_result) << 1; - if (cmd->scsi_status) { + if (scsi_status) { pr_debug("PSCSI Status Byte exception at cmd: %p CDB:" " 0x%02x Result: 0x%08x\n", cmd, pt->pscsi_cdb[0], - pt->pscsi_result); + result); } - switch (host_byte(pt->pscsi_result)) { + pscsi_complete_cmd(cmd, scsi_status, scsi_req(req)->sense); + + switch (host_byte(result)) { case DID_OK: - target_complete_cmd(cmd, cmd->scsi_status); + target_complete_cmd(cmd, scsi_status); break; default: pr_debug("PSCSI Host Byte exception at cmd: %p CDB:" " 0x%02x Result: 0x%08x\n", cmd, pt->pscsi_cdb[0], - pt->pscsi_result); + result); target_complete_cmd(cmd, SAM_STAT_CHECK_CONDITION); break; } - memcpy(pt->pscsi_sense, scsi_req(req)->sense, TRANSPORT_SENSE_BUFFER); __blk_put_request(req->q, req); kfree(pt); } @@ -1090,7 +1085,6 @@ static void pscsi_req_done(struct request *req, int uptodate) .configure_device = pscsi_configure_device, .destroy_device = pscsi_destroy_device, .free_device = pscsi_free_device, - .transport_complete = pscsi_transport_complete, .parse_cdb = pscsi_parse_cdb, .set_configfs_dev_params = pscsi_set_configfs_dev_params, .show_configfs_dev_params = pscsi_show_configfs_dev_params, diff --git a/drivers/target/target_core_pscsi.h b/drivers/target/target_core_pscsi.h index 8a02fa47c7e8..b86fb0e1b783 100644 --- a/drivers/target/target_core_pscsi.h +++ b/drivers/target/target_core_pscsi.h @@ -23,10 +23,6 @@ struct Scsi_Host; struct pscsi_plugin_task { - unsigned char pscsi_sense[TRANSPORT_SENSE_BUFFER]; - int pscsi_direction; - int pscsi_result; - u32 pscsi_resid; unsigned char pscsi_cdb[0]; } ____cacheline_aligned;