From ca008aeeb02cb15eba4acc6c82e3432a1757b642 Mon Sep 17 00:00:00 2001 From: Karan Tilak Kumar Date: Mon, 11 Dec 2023 09:36:06 -0800 Subject: scsi: fnic: Add and use fnic number Add fnic_num in fnic.h to identify fnic in a multi-fnic environment. Increment and set the fnic number during driver load in fnic_probe. Replace the host number with fnic number in debugfs. Reviewed-by: Sesidhar Baddela Reviewed-by: Arulprabhu Ponnusamy Signed-off-by: Karan Tilak Kumar Link: https://lore.kernel.org/r/20231211173617.932990-3-kartilak@cisco.com Signed-off-by: Martin K. Petersen --- drivers/scsi/fnic/fnic.h | 1 + drivers/scsi/fnic/fnic_main.c | 18 ++++++++++++++++-- 2 files changed, 17 insertions(+), 2 deletions(-) (limited to 'drivers/scsi') diff --git a/drivers/scsi/fnic/fnic.h b/drivers/scsi/fnic/fnic.h index 22cef283b2b9..721a31a03628 100644 --- a/drivers/scsi/fnic/fnic.h +++ b/drivers/scsi/fnic/fnic.h @@ -216,6 +216,7 @@ struct fnic_event { /* Per-instance private data structure */ struct fnic { + int fnic_num; struct fc_lport *lport; struct fcoe_ctlr ctlr; /* FIP FCoE controller structure */ struct vnic_dev_bar bar0; diff --git a/drivers/scsi/fnic/fnic_main.c b/drivers/scsi/fnic/fnic_main.c index f27f9319e0b2..3044723e125e 100644 --- a/drivers/scsi/fnic/fnic_main.c +++ b/drivers/scsi/fnic/fnic_main.c @@ -39,6 +39,7 @@ static struct kmem_cache *fnic_sgl_cache[FNIC_SGL_NUM_CACHES]; static struct kmem_cache *fnic_io_req_cache; static LIST_HEAD(fnic_list); static DEFINE_SPINLOCK(fnic_list_lock); +static DEFINE_IDA(fnic_ida); /* Supported devices by fnic module */ static struct pci_device_id fnic_id_table[] = { @@ -583,7 +584,8 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) struct fc_lport *lp; struct fnic *fnic; mempool_t *pool; - int err; + int err = 0; + int fnic_id = 0; int i; unsigned long flags; @@ -597,8 +599,16 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) err = -ENOMEM; goto err_out; } + host = lp->host; fnic = lport_priv(lp); + + fnic_id = ida_alloc(&fnic_ida, GFP_KERNEL); + if (fnic_id < 0) { + pr_err("Unable to alloc fnic ID\n"); + err = fnic_id; + goto err_out_ida_alloc; + } fnic->lport = lp; fnic->ctlr.lp = lp; @@ -608,7 +618,7 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) host->host_no); host->transportt = fnic_fc_transport; - + fnic->fnic_num = fnic_id; fnic_stats_debugfs_init(fnic); /* Setup PCI resources */ @@ -951,6 +961,8 @@ err_out_disable_device: pci_disable_device(pdev); err_out_free_hba: fnic_stats_debugfs_remove(fnic); + ida_free(&fnic_ida, fnic->fnic_num); +err_out_ida_alloc: scsi_host_put(lp->host); err_out: return err; @@ -1031,6 +1043,7 @@ static void fnic_remove(struct pci_dev *pdev) fnic_iounmap(fnic); pci_release_regions(pdev); pci_disable_device(pdev); + ida_free(&fnic_ida, fnic->fnic_num); scsi_host_put(lp->host); } @@ -1168,6 +1181,7 @@ static void __exit fnic_cleanup_module(void) fnic_trace_free(); fnic_fc_trace_free(); fnic_debugfs_terminate(); + ida_destroy(&fnic_ida); } module_init(fnic_init_module); -- cgit v1.2.3