[PATCH v2 13/33] ibmvfc: add helper to check NVMe/FC support with active channels

[Tyrel Datwyler <tyreld@linux.ibm.com>]

It can be the case that NVMeoF is enabled on both the client and VIOS,
but no queues are configured making the need to do NVMe target discovery
pointless. Add a helper to short hand the capabilities check and active
NVMe queue check.

Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
---
 drivers/scsi/ibmvscsi/ibmvfc-core.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/scsi/ibmvscsi/ibmvfc-core.c b/drivers/scsi/ibmvscsi/ibmvfc-core.c
index 84302f982a6a..088167ec04ff 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc-core.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc-core.c
@@ -207,6 +207,12 @@ static int ibmvfc_check_caps(struct ibmvfc_host *vhost, unsigned long cap_flags)
 	return (host_caps & cap_flags) ? 1 : 0;
 }
 
+static int ibmvfc_nvme_active(struct ibmvfc_host *vhost)
+{
+	return (ibmvfc_check_caps(vhost, IBMVFC_SUPPORT_NVMEOF) &&
+		vhost->nvme_scrqs.active_queues);
+}
+
 static struct ibmvfc_fcp_cmd_iu *ibmvfc_get_fcp_iu(struct ibmvfc_host *vhost,
 						   struct ibmvfc_cmd *vfc_cmd)
 {
-- 
2.55.0