[PATCH 07/29] ibmvfc: add wrapper to get vhost associated with a channel struct
From: Tyrel Datwyler <tyreld@linux.ibm.com>
Date: 2026-06-23 01:30:54
Also in:
linux-scsi, lkml
Subsystem:
ibm power virtual fc device drivers, linux for powerpc (32-bit and 64-bit), scsi subsystem, the rest · Maintainers:
Tyrel Datwyler, Madhavan Srinivasan, Michael Ellerman, "James E.J. Bottomley", "Martin K. Petersen", Linus Torvalds
Add ibmvfc_channels_to_vhost() to recover the parent struct ibmvfc_host from a protocol-specific struct ibmvfc_channels. Later patches need to operate on either the SCSI or NVMe channel group and still access host-wide state such as the primary CRQ, device, and logging context. Centralize that mapping in a helper instead of open- coding container lookups at each call site. Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com> --- drivers/scsi/ibmvscsi/ibmvfc.h | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.h b/drivers/scsi/ibmvscsi/ibmvfc.h
index 454968de925b..67f546ff092e 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.h
+++ b/drivers/scsi/ibmvscsi/ibmvfc.h@@ -1011,6 +1011,16 @@ struct ibmvfc_host { wait_queue_head_t work_wait_q; }; +static inline struct ibmvfc_host *ibmvfc_channels_to_vhost(struct ibmvfc_channels *channels) +{ + if (channels->protocol == IBMVFC_PROTO_SCSI) + return container_of(channels, struct ibmvfc_host, scsi_scrqs); + else if (channels->protocol == IBMVFC_PROTO_NVME) + return container_of(channels, struct ibmvfc_host, nvme_scrqs); + + return NULL; +} + #define DBG_CMD(CMD) do { if (ibmvfc_debug) CMD; } while (0) #define tgt_dbg(t, fmt, ...) \
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2.54.0