scsi: bsg: Pass queue_limits to bsg_setup_queue()

This allows bsg_setup_queue() to pass them to blk_mq_alloc_queue() and thus
set up the limits at queue allocation time.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20240409143748.980206-3-hch@lst.deReviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

block/bsg-lib.c

@@ -354,12 +354,14 @@ static const struct blk_mq_ops bsg_mq_ops = {
  * bsg_setup_queue - Create and add the bsg hooks so we can receive requests
  * @dev: device to attach bsg device to
  * @name: device to give bsg device
+ * @lim: queue limits for the bsg queue
  * @job_fn: bsg job handler
  * @timeout: timeout handler function pointer
  * @dd_job_size: size of LLD data needed for each job
  */
 struct request_queue *bsg_setup_queue(struct device *dev, const char *name,
-		bsg_job_fn *job_fn, bsg_timeout_fn *timeout, int dd_job_size)
+		struct queue_limits *lim, bsg_job_fn *job_fn,
+		bsg_timeout_fn *timeout, int dd_job_size)
 {
 	struct bsg_set *bset;
 	struct blk_mq_tag_set *set;
@@ -383,7 +385,7 @@ struct request_queue *bsg_setup_queue(struct device *dev, const char *name,
 	if (blk_mq_alloc_tag_set(set))
 		goto out_tag_set;
 
-	q = blk_mq_alloc_queue(set, NULL, NULL);
+	q = blk_mq_alloc_queue(set, lim, NULL);
 	if (IS_ERR(q)) {
 		ret = PTR_ERR(q);
 		goto out_queue;

drivers/scsi/mpi3mr/mpi3mr_app.c

@@ -1860,7 +1860,7 @@ void mpi3mr_bsg_init(struct mpi3mr_ioc *mrioc)
 		return;
 	}
 
-	mrioc->bsg_queue = bsg_setup_queue(bsg_dev, dev_name(bsg_dev),
+	mrioc->bsg_queue = bsg_setup_queue(bsg_dev, dev_name(bsg_dev), NULL,
 			mpi3mr_bsg_request, NULL, 0);
 	if (IS_ERR(mrioc->bsg_queue)) {
 		ioc_err(mrioc, "%s: bsg registration failed\n",

drivers/scsi/scsi_transport_fc.c

@@ -4287,8 +4287,8 @@ fc_bsg_hostadd(struct Scsi_Host *shost, struct fc_host_attrs *fc_host)
 	snprintf(bsg_name, sizeof(bsg_name),
 		 "fc_host%d", shost->host_no);
 
-	q = bsg_setup_queue(dev, bsg_name, fc_bsg_dispatch, fc_bsg_job_timeout,
-				i->f->dd_bsg_size);
+	q = bsg_setup_queue(dev, bsg_name, NULL, fc_bsg_dispatch,
+			fc_bsg_job_timeout, i->f->dd_bsg_size);
 	if (IS_ERR(q)) {
 		dev_err(dev,
 			"fc_host%d: bsg interface failed to initialize - setup queue\n",
@@ -4318,7 +4318,7 @@ fc_bsg_rportadd(struct Scsi_Host *shost, struct fc_rport *rport)
 	if (!i->f->bsg_request)
 		return -ENOTSUPP;
 
-	q = bsg_setup_queue(dev, dev_name(dev), fc_bsg_dispatch_prep,
+	q = bsg_setup_queue(dev, dev_name(dev), NULL, fc_bsg_dispatch_prep,
 				fc_bsg_job_timeout, i->f->dd_bsg_size);
 	if (IS_ERR(q)) {
 		dev_err(dev, "failed to setup bsg queue\n");

drivers/scsi/scsi_transport_iscsi.c

@@ -1542,7 +1542,8 @@ iscsi_bsg_host_add(struct Scsi_Host *shost, struct iscsi_cls_host *ihost)
 		return -ENOTSUPP;
 
 	snprintf(bsg_name, sizeof(bsg_name), "iscsi_host%d", shost->host_no);
-	q = bsg_setup_queue(dev, bsg_name, iscsi_bsg_host_dispatch, NULL, 0);
+	q = bsg_setup_queue(dev, bsg_name, NULL, iscsi_bsg_host_dispatch, NULL,
+			0);
 	if (IS_ERR(q)) {
 		shost_printk(KERN_ERR, shost, "bsg interface failed to "
 			     "initialize - no request queue\n");

drivers/scsi/scsi_transport_sas.c

@@ -197,7 +197,7 @@ static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy)
 	}
 
 	if (rphy) {
-		q = bsg_setup_queue(&rphy->dev, dev_name(&rphy->dev),
+		q = bsg_setup_queue(&rphy->dev, dev_name(&rphy->dev), NULL,
 				sas_smp_dispatch, NULL, 0);
 		if (IS_ERR(q))
 			return PTR_ERR(q);
@@ -206,7 +206,7 @@ static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy)
 		char name[20];
 
 		snprintf(name, sizeof(name), "sas_host%d", shost->host_no);
-		q = bsg_setup_queue(&shost->shost_gendev, name,
+		q = bsg_setup_queue(&shost->shost_gendev, name, NULL,
 				sas_smp_dispatch, NULL, 0);
 		if (IS_ERR(q))
 			return PTR_ERR(q);

drivers/ufs/core/ufs_bsg.c

@@ -253,7 +253,8 @@ int ufs_bsg_probe(struct ufs_hba *hba)
 	if (ret)
 		goto out;
 
-	q = bsg_setup_queue(bsg_dev, dev_name(bsg_dev), ufs_bsg_request, NULL, 0);
+	q = bsg_setup_queue(bsg_dev, dev_name(bsg_dev), NULL, ufs_bsg_request,
+			NULL, 0);
 	if (IS_ERR(q)) {
 		ret = PTR_ERR(q);
 		goto out;

include/linux/bsg-lib.h

@@ -65,7 +65,8 @@ struct bsg_job {
 void bsg_job_done(struct bsg_job *job, int result,
 		  unsigned int reply_payload_rcv_len);
 struct request_queue *bsg_setup_queue(struct device *dev, const char *name,
-		bsg_job_fn *job_fn, bsg_timeout_fn *timeout, int dd_job_size);
+		struct queue_limits *lim, bsg_job_fn *job_fn,
+		bsg_timeout_fn *timeout, int dd_job_size);
 void bsg_remove_queue(struct request_queue *q);
 void bsg_job_put(struct bsg_job *job);
 int __must_check bsg_job_get(struct bsg_job *job);