From 21eccf304b3a16c26fc2878faca4665907a318ec Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Tue, 27 Apr 2021 10:30:08 +0200 Subject: scsi: scsi_ioctl: Return error code when blk_rq_map_kern() fails The callers of sg_scsi_ioctl() already check for negative return values, so we can drop the usage of DRIVER_ERROR and return the error from blk_rq_map_kern() instead. Link: https://lore.kernel.org/r/20210427083046.31620-3-hare@suse.de Reviewed-by: Bart Van Assche Reviewed-by: Christoph Hellwig Signed-off-by: Hannes Reinecke Signed-off-by: Martin K. Petersen --- block/scsi_ioctl.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'block') diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c index 1b3fe99b83a6..48bb4e1ea1e7 100644 --- a/block/scsi_ioctl.c +++ b/block/scsi_ioctl.c @@ -484,9 +484,10 @@ int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode, break; } - if (bytes && blk_rq_map_kern(q, rq, buffer, bytes, GFP_NOIO)) { - err = DRIVER_ERROR << 24; - goto error; + if (bytes) { + err = blk_rq_map_kern(q, rq, buffer, bytes, GFP_NOIO); + if (err) + goto error; } blk_execute_rq(disk, rq, 0); -- cgit v1.2.1 From 464a00c9e0ad45e3f42ff6ea705491a356df818e Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Tue, 27 Apr 2021 10:30:15 +0200 Subject: scsi: core: Kill DRIVER_SENSE Replace the check for DRIVER_SENSE with a check for scsi_status_is_check_condition(). Audit all callsites to ensure the SAM status is set correctly. For backwards compability move the DRIVER_SENSE definition to sg.h, and update sg, bsg, and scsi_ioctl to set the DRIVER_SENSE driver_status whenever SAM_STAT_CHECK_CONDITION is present. [mkp: fix zeroday srp warning] Link: https://lore.kernel.org/r/20210427083046.31620-10-hare@suse.de Signed-off-by: Hannes Reinecke Signed-off-by: Martin K. Petersen fix --- block/bsg.c | 2 ++ block/scsi_ioctl.c | 2 ++ 2 files changed, 4 insertions(+) (limited to 'block') diff --git a/block/bsg.c b/block/bsg.c index bd10922d5cbb..9e6ff0d71d25 100644 --- a/block/bsg.c +++ b/block/bsg.c @@ -97,6 +97,8 @@ static int bsg_scsi_complete_rq(struct request *rq, struct sg_io_v4 *hdr) hdr->device_status = sreq->result & 0xff; hdr->transport_status = host_byte(sreq->result); hdr->driver_status = driver_byte(sreq->result); + if (scsi_status_is_check_condition(sreq->result)) + hdr->driver_status = DRIVER_SENSE; hdr->info = 0; if (hdr->device_status || hdr->transport_status || hdr->driver_status) hdr->info |= SG_INFO_CHECK; diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c index 48bb4e1ea1e7..eb65bcde166f 100644 --- a/block/scsi_ioctl.c +++ b/block/scsi_ioctl.c @@ -257,6 +257,8 @@ static int blk_complete_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr, hdr->msg_status = msg_byte(req->result); hdr->host_status = host_byte(req->result); hdr->driver_status = driver_byte(req->result); + if (scsi_status_is_check_condition(hdr->status)) + hdr->driver_status = DRIVER_SENSE; hdr->info = 0; if (hdr->masked_status || hdr->host_status || hdr->driver_status) hdr->info |= SG_INFO_CHECK; -- cgit v1.2.1 From 54c29086195fd72b6a290ef367e71f73fa657b1f Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Tue, 27 Apr 2021 10:30:20 +0200 Subject: scsi: core: Drop the now obsolete driver_byte definitions The driver_byte field in the result is now unused, so we can drop the definitions. Link: https://lore.kernel.org/r/20210427083046.31620-15-hare@suse.de Reviewed-by: Bart Van Assche Reviewed-by: Christoph Hellwig Signed-off-by: Hannes Reinecke Signed-off-by: Martin K. Petersen --- block/bsg-lib.c | 2 +- block/bsg.c | 2 +- block/scsi_ioctl.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) (limited to 'block') diff --git a/block/bsg-lib.c b/block/bsg-lib.c index 330fede77271..cf1811261722 100644 --- a/block/bsg-lib.c +++ b/block/bsg-lib.c @@ -84,7 +84,7 @@ static int bsg_transport_complete_rq(struct request *rq, struct sg_io_v4 *hdr) */ hdr->device_status = job->result & 0xff; hdr->transport_status = host_byte(job->result); - hdr->driver_status = driver_byte(job->result); + hdr->driver_status = 0; hdr->info = 0; if (hdr->device_status || hdr->transport_status || hdr->driver_status) hdr->info |= SG_INFO_CHECK; diff --git a/block/bsg.c b/block/bsg.c index 9e6ff0d71d25..33e3f82ed03a 100644 --- a/block/bsg.c +++ b/block/bsg.c @@ -96,7 +96,7 @@ static int bsg_scsi_complete_rq(struct request *rq, struct sg_io_v4 *hdr) */ hdr->device_status = sreq->result & 0xff; hdr->transport_status = host_byte(sreq->result); - hdr->driver_status = driver_byte(sreq->result); + hdr->driver_status = 0; if (scsi_status_is_check_condition(sreq->result)) hdr->driver_status = DRIVER_SENSE; hdr->info = 0; diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c index eb65bcde166f..3a9c071b3799 100644 --- a/block/scsi_ioctl.c +++ b/block/scsi_ioctl.c @@ -256,7 +256,7 @@ static int blk_complete_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr, hdr->masked_status = status_byte(req->result); hdr->msg_status = msg_byte(req->result); hdr->host_status = host_byte(req->result); - hdr->driver_status = driver_byte(req->result); + hdr->driver_status = 0; if (scsi_status_is_check_condition(hdr->status)) hdr->driver_status = DRIVER_SENSE; hdr->info = 0; -- cgit v1.2.1 From 54cf31d07aa859e142c527f04eefa254659e1af2 Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Tue, 27 Apr 2021 10:30:43 +0200 Subject: scsi: core: Drop message byte helper The message byte is now unused, so we can drop the helper to set the message byte and the check for message bytes during error recovery. Link: https://lore.kernel.org/r/20210427083046.31620-38-hare@suse.de Reviewed-by: Bart Van Assche Signed-off-by: Hannes Reinecke Signed-off-by: Martin K. Petersen --- block/scsi_ioctl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'block') diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c index 3a9c071b3799..fa6df11b8bdd 100644 --- a/block/scsi_ioctl.c +++ b/block/scsi_ioctl.c @@ -254,7 +254,7 @@ static int blk_complete_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr, */ hdr->status = req->result & 0xff; hdr->masked_status = status_byte(req->result); - hdr->msg_status = msg_byte(req->result); + hdr->msg_status = COMMAND_COMPLETE; hdr->host_status = host_byte(req->result); hdr->driver_status = 0; if (scsi_status_is_check_condition(hdr->status)) -- cgit v1.2.1 From d2bcbeab4200665b694ec4f92a7a2fd58b70b1e8 Mon Sep 17 00:00:00 2001 From: Muneendra Kumar Date: Tue, 8 Jun 2021 10:05:45 +0530 Subject: scsi: blkcg: Add app identifier support for blkcg Add a unique application identifier (i.e fc_app_id member) in blkcg. This allows identification of traffic belonging to an specific both on the host and in the fabric infrastructure. As an example, this allows the storage stack to uniquely identify traffic belong to particular virtual machine. Link: https://lore.kernel.org/r/20210608043556.274139-3-muneendra.kumar@broadcom.com Reviewed-by: Himanshu Madhani Reviewed-by: Hannes Reinecke Acked-by: Tejun Heo Signed-off-by: Muneendra Kumar Signed-off-by: Martin K. Petersen --- block/Kconfig | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'block') diff --git a/block/Kconfig b/block/Kconfig index a2297edfdde8..03886d105301 100644 --- a/block/Kconfig +++ b/block/Kconfig @@ -144,6 +144,15 @@ config BLK_CGROUP_IOLATENCY Note, this is an experimental interface and could be changed someday. +config BLK_CGROUP_FC_APPID + bool "Enable support to track FC I/O Traffic across cgroup applications" + depends on BLK_CGROUP=y + help + Enabling this option enables the support to track FC I/O traffic across + cgroup applications. It enables the Fabric and the storage targets to + identify, monitor, and handle FC traffic based on VM tags by inserting + application specific identification into the FC frame. + config BLK_CGROUP_IOCOST bool "Enable support for cost model based cgroup IO controller" depends on BLK_CGROUP=y -- cgit v1.2.1