[PATCH v2 11/17] ibmvfc: set and track hw queue in ibmvfc_event struct
From: Tyrel Datwyler <tyreld@linux.ibm.com>
Date: 2020-12-02 00:54:46
Also in:
linux-scsi, lkml
Subsystem:
ibm power virtual fc device drivers, linux for powerpc (32-bit and 64-bit), scsi subsystem, the rest · Maintainers:
Tyrel Datwyler, Madhavan Srinivasan, Michael Ellerman, "James E.J. Bottomley", "Martin K. Petersen", Linus Torvalds
Extract the hwq id from a SCSI command and store it in the ibmvfc_event structure to identify which Sub-CRQ to send the command down when channels are being utilized. Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com> Reviewed-by: Brian King <redacted> --- drivers/scsi/ibmvscsi/ibmvfc.c | 5 +++++ drivers/scsi/ibmvscsi/ibmvfc.h | 1 + 2 files changed, 6 insertions(+)
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index 0e6c9e55a221..4555775ea74b 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c@@ -1397,6 +1397,7 @@ static void ibmvfc_init_event(struct ibmvfc_event *evt, evt->crq.format = format; evt->done = done; evt->eh_comp = NULL; + evt->hwq = 0; } /**
@@ -1748,6 +1749,8 @@ static int ibmvfc_queuecommand_lck(struct scsi_cmnd *cmnd, struct ibmvfc_cmd *vfc_cmd; struct ibmvfc_fcp_cmd_iu *iu; struct ibmvfc_event *evt; + u32 tag_and_hwq = blk_mq_unique_tag(cmnd->request); + u16 hwq = blk_mq_unique_tag_to_hwq(tag_and_hwq); int rc; if (unlikely((rc = fc_remote_port_chkready(rport))) ||
@@ -1775,6 +1778,8 @@ static int ibmvfc_queuecommand_lck(struct scsi_cmnd *cmnd, } vfc_cmd->correlation = cpu_to_be64(evt); + if (vhost->using_channels) + evt->hwq = hwq % vhost->scsi_scrqs.active_queues; if (likely(!(rc = ibmvfc_map_sg_data(cmnd, evt, vfc_cmd, vhost->dev)))) return ibmvfc_send_event(evt, vhost, 0);
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.h b/drivers/scsi/ibmvscsi/ibmvfc.h
index dff26dbd912c..e0ffb0416223 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.h
+++ b/drivers/scsi/ibmvscsi/ibmvfc.h@@ -781,6 +781,7 @@ struct ibmvfc_event { struct completion comp; struct completion *eh_comp; struct timer_list timer; + u16 hwq; }; /* a pool of event structs for use */
--
2.27.0