From 6b5d6c443a9b4fd71b633cef66b5db4de8a85787 Mon Sep 17 00:00:00 2001 From: Mike Christie Date: Tue, 21 Apr 2009 15:32:32 -0500 Subject: [SCSI] cxgb3i, iser, iscsi_tcp: set target can queue Set target can queue limit to the number of preallocated session tasks we have. This along with the cxgb3i can_queue patch will fix a throughput problem where it could only queue one LU worth of data at a time. Signed-off-by: Mike Christie Signed-off-by: James Bottomley --- drivers/infiniband/ulp/iser/iscsi_iser.c | 1 + drivers/scsi/cxgb3i/cxgb3i_iscsi.c | 1 + drivers/scsi/iscsi_tcp.c | 1 + drivers/scsi/libiscsi.c | 10 ++++++++++ include/scsi/libiscsi.h | 2 ++ 5 files changed, 15 insertions(+) diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.c b/drivers/infiniband/ulp/iser/iscsi_iser.c index 13d7674b293d..75223f50de58 100644 --- a/drivers/infiniband/ulp/iser/iscsi_iser.c +++ b/drivers/infiniband/ulp/iser/iscsi_iser.c @@ -599,6 +599,7 @@ static struct scsi_host_template iscsi_iser_sht = { .eh_abort_handler = iscsi_eh_abort, .eh_device_reset_handler= iscsi_eh_device_reset, .eh_target_reset_handler= iscsi_eh_target_reset, + .target_alloc = iscsi_target_alloc, .use_clustering = DISABLE_CLUSTERING, .proc_name = "iscsi_iser", .this_id = -1, diff --git a/drivers/scsi/cxgb3i/cxgb3i_iscsi.c b/drivers/scsi/cxgb3i/cxgb3i_iscsi.c index fff8e4327644..b3ca3a05f0d9 100644 --- a/drivers/scsi/cxgb3i/cxgb3i_iscsi.c +++ b/drivers/scsi/cxgb3i/cxgb3i_iscsi.c @@ -883,6 +883,7 @@ static struct scsi_host_template cxgb3i_host_template = { .eh_abort_handler = iscsi_eh_abort, .eh_device_reset_handler = iscsi_eh_device_reset, .eh_target_reset_handler = iscsi_eh_target_reset, + .target_alloc = iscsi_target_alloc, .use_clustering = DISABLE_CLUSTERING, .this_id = -1, }; diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c index f97fc7e9de79..b7c092d63bbe 100644 --- a/drivers/scsi/iscsi_tcp.c +++ b/drivers/scsi/iscsi_tcp.c @@ -851,6 +851,7 @@ static struct scsi_host_template iscsi_sw_tcp_sht = { .use_clustering = DISABLE_CLUSTERING, .slave_alloc = iscsi_sw_tcp_slave_alloc, .slave_configure = iscsi_sw_tcp_slave_configure, + .target_alloc = iscsi_target_alloc, .proc_name = "iscsi_tcp", .this_id = -1, }; diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c index 689628359169..e72b4ad47d35 100644 --- a/drivers/scsi/libiscsi.c +++ b/drivers/scsi/libiscsi.c @@ -1463,6 +1463,16 @@ int iscsi_change_queue_depth(struct scsi_device *sdev, int depth) } EXPORT_SYMBOL_GPL(iscsi_change_queue_depth); +int iscsi_target_alloc(struct scsi_target *starget) +{ + struct iscsi_cls_session *cls_session = starget_to_session(starget); + struct iscsi_session *session = cls_session->dd_data; + + starget->can_queue = session->scsi_cmds_max; + return 0; +} +EXPORT_SYMBOL_GPL(iscsi_target_alloc); + void iscsi_session_recovery_timedout(struct iscsi_cls_session *cls_session) { struct iscsi_session *session = cls_session->dd_data; diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h index 7ffaed2f94dd..0289f5745fb9 100644 --- a/include/scsi/libiscsi.h +++ b/include/scsi/libiscsi.h @@ -36,6 +36,7 @@ struct scsi_transport_template; struct scsi_host_template; struct scsi_device; struct Scsi_Host; +struct scsi_target; struct scsi_cmnd; struct socket; struct iscsi_transport; @@ -350,6 +351,7 @@ extern struct Scsi_Host *iscsi_host_alloc(struct scsi_host_template *sht, bool xmit_can_sleep); extern void iscsi_host_remove(struct Scsi_Host *shost); extern void iscsi_host_free(struct Scsi_Host *shost); +extern int iscsi_target_alloc(struct scsi_target *starget); /* * session management -- cgit v1.2.3