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scsi: ibmvfc: add wrapper to get vhost associated with a channel struct

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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>
Link: https://patch.msgid.link/20260723000149.969416-12-tyreld@linux.ibm.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Tyrel Datwyler
2026-07-22 17:01:27 -07:00
committed by Martin K. Petersen
parent ecc03d958e
commit c34ca34f1d
1 changed files with 10 additions and 0 deletions
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10
drivers/scsi/ibmvscsi/ibmvfc.h
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@@ -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, ...) \