| Message ID | 20240402130645.653507-6-hch@lst.de (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [01/23] block: add a helper to cancel atomic queue limit updates | expand |
On 4/2/24 15:06, Christoph Hellwig wrote: > ibmvfc only supports a single segment for BSG FC passthrough. Instead of > having it set a queue limits after creating the BSD queues, add a field so > that the FC transport can set it before allocating the queue. > > Signed-off-by: Christoph Hellwig <hch@lst.de> > Reviewed-by: Damien Le Moal <dlemoal@kernel.org> > --- > drivers/scsi/ibmvscsi/ibmvfc.c | 5 +---- > drivers/scsi/scsi_transport_fc.c | 2 ++ > include/scsi/scsi_transport_fc.h | 1 + > 3 files changed, 4 insertions(+), 4 deletions(-) > > diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c > index 05b126bfd18b55..a3d1013c83075c 100644 > --- a/drivers/scsi/ibmvscsi/ibmvfc.c > +++ b/drivers/scsi/ibmvscsi/ibmvfc.c > @@ -5541,8 +5541,6 @@ static void ibmvfc_tgt_add_rport(struct ibmvfc_target *tgt) > rport->supported_classes |= FC_COS_CLASS2; > if (be32_to_cpu(tgt->service_parms.class3_parms[0]) & 0x80000000) > rport->supported_classes |= FC_COS_CLASS3; > - if (rport->rqst_q) > - blk_queue_max_segments(rport->rqst_q, 1); > } else > tgt_dbg(tgt, "rport add failed\n"); > spin_unlock_irqrestore(vhost->host->host_lock, flags); > @@ -6391,8 +6389,6 @@ static int ibmvfc_probe(struct vio_dev *vdev, const struct vio_device_id *id) > > ibmvfc_init_sub_crqs(vhost); > > - if (shost_to_fc_host(shost)->rqst_q) > - blk_queue_max_segments(shost_to_fc_host(shost)->rqst_q, 1); > dev_set_drvdata(dev, vhost); > spin_lock(&ibmvfc_driver_lock); > list_add_tail(&vhost->queue, &ibmvfc_head); > @@ -6547,6 +6543,7 @@ static struct fc_function_template ibmvfc_transport_functions = { > .get_starget_port_id = ibmvfc_get_starget_port_id, > .show_starget_port_id = 1, > > + .max_bsg_segments = 1, > .bsg_request = ibmvfc_bsg_request, > .bsg_timeout = ibmvfc_bsg_timeout, > }; > diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c > index 0799700b0fca77..7d088b8da07578 100644 > --- a/drivers/scsi/scsi_transport_fc.c > +++ b/drivers/scsi/scsi_transport_fc.c > @@ -4288,6 +4288,7 @@ 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); > scsi_init_limits(shost, &lim); > + lim.max_segments = min_not_zero(lim.max_segments, i->f->max_bsg_segments); > q = bsg_setup_queue(dev, bsg_name, &lim, fc_bsg_dispatch, > fc_bsg_job_timeout, i->f->dd_bsg_size); > if (IS_ERR(q)) { > @@ -4320,6 +4321,7 @@ fc_bsg_rportadd(struct Scsi_Host *shost, struct fc_rport *rport) > return -ENOTSUPP; > > scsi_init_limits(shost, &lim); > + lim.max_segments = min_not_zero(lim.max_segments, i->f->max_bsg_segments); > q = bsg_setup_queue(dev, dev_name(dev), &lim, fc_bsg_dispatch_prep, > fc_bsg_job_timeout, i->f->dd_bsg_size); > if (IS_ERR(q)) { > diff --git a/include/scsi/scsi_transport_fc.h b/include/scsi/scsi_transport_fc.h > index 483513c575976c..fd039306ffbb20 100644 > --- a/include/scsi/scsi_transport_fc.h > +++ b/include/scsi/scsi_transport_fc.h > @@ -709,6 +709,7 @@ struct fc_function_template { > int (*vport_delete)(struct fc_vport *); > > /* bsg support */ > + u32 max_bsg_segments; > int (*bsg_request)(struct bsg_job *); > int (*bsg_timeout)(struct bsg_job *); > That looks like an odd alignment... Anyway: Reviewed-by: Hannes Reinecke <hare@suse.de> Cheers, Hannes
On Wed, Apr 03, 2024 at 08:50:52AM +0200, Hannes Reinecke wrote: >> +++ b/include/scsi/scsi_transport_fc.h >> @@ -709,6 +709,7 @@ struct fc_function_template { >> int (*vport_delete)(struct fc_vport *); >> /* bsg support */ >> + u32 max_bsg_segments; >> int (*bsg_request)(struct bsg_job *); >> int (*bsg_timeout)(struct bsg_job *); >> > That looks like an odd alignment... With alignment do you mean the indentation? It matches that of other non-function pointer fields in this structure.
On 4/2/24 06:06, Christoph Hellwig wrote: > ibmvfc only supports a single segment for BSG FC passthrough. Instead of > having it set a queue limits after creating the BSD queues, add a field so ^^^ BSG? > that the FC transport can set it before allocating the queue. Thanks, Bart.
On Thu, Apr 04, 2024 at 09:56:45AM -0700, Bart Van Assche wrote: > On 4/2/24 06:06, Christoph Hellwig wrote: >> ibmvfc only supports a single segment for BSG FC passthrough. Instead of >> having it set a queue limits after creating the BSD queues, add a field so > ^^^ > BSG? Yes, thanks.
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c index 05b126bfd18b55..a3d1013c83075c 100644 --- a/drivers/scsi/ibmvscsi/ibmvfc.c +++ b/drivers/scsi/ibmvscsi/ibmvfc.c @@ -5541,8 +5541,6 @@ static void ibmvfc_tgt_add_rport(struct ibmvfc_target *tgt) rport->supported_classes |= FC_COS_CLASS2; if (be32_to_cpu(tgt->service_parms.class3_parms[0]) & 0x80000000) rport->supported_classes |= FC_COS_CLASS3; - if (rport->rqst_q) - blk_queue_max_segments(rport->rqst_q, 1); } else tgt_dbg(tgt, "rport add failed\n"); spin_unlock_irqrestore(vhost->host->host_lock, flags); @@ -6391,8 +6389,6 @@ static int ibmvfc_probe(struct vio_dev *vdev, const struct vio_device_id *id) ibmvfc_init_sub_crqs(vhost); - if (shost_to_fc_host(shost)->rqst_q) - blk_queue_max_segments(shost_to_fc_host(shost)->rqst_q, 1); dev_set_drvdata(dev, vhost); spin_lock(&ibmvfc_driver_lock); list_add_tail(&vhost->queue, &ibmvfc_head); @@ -6547,6 +6543,7 @@ static struct fc_function_template ibmvfc_transport_functions = { .get_starget_port_id = ibmvfc_get_starget_port_id, .show_starget_port_id = 1, + .max_bsg_segments = 1, .bsg_request = ibmvfc_bsg_request, .bsg_timeout = ibmvfc_bsg_timeout, }; diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c index 0799700b0fca77..7d088b8da07578 100644 --- a/drivers/scsi/scsi_transport_fc.c +++ b/drivers/scsi/scsi_transport_fc.c @@ -4288,6 +4288,7 @@ 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); scsi_init_limits(shost, &lim); + lim.max_segments = min_not_zero(lim.max_segments, i->f->max_bsg_segments); q = bsg_setup_queue(dev, bsg_name, &lim, fc_bsg_dispatch, fc_bsg_job_timeout, i->f->dd_bsg_size); if (IS_ERR(q)) { @@ -4320,6 +4321,7 @@ fc_bsg_rportadd(struct Scsi_Host *shost, struct fc_rport *rport) return -ENOTSUPP; scsi_init_limits(shost, &lim); + lim.max_segments = min_not_zero(lim.max_segments, i->f->max_bsg_segments); q = bsg_setup_queue(dev, dev_name(dev), &lim, fc_bsg_dispatch_prep, fc_bsg_job_timeout, i->f->dd_bsg_size); if (IS_ERR(q)) { diff --git a/include/scsi/scsi_transport_fc.h b/include/scsi/scsi_transport_fc.h index 483513c575976c..fd039306ffbb20 100644 --- a/include/scsi/scsi_transport_fc.h +++ b/include/scsi/scsi_transport_fc.h @@ -709,6 +709,7 @@ struct fc_function_template { int (*vport_delete)(struct fc_vport *); /* bsg support */ + u32 max_bsg_segments; int (*bsg_request)(struct bsg_job *); int (*bsg_timeout)(struct bsg_job *);