summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorTyrel Datwyler <tyreld@linux.ibm.com>2021-01-14 14:31:40 -0600
committerMartin K. Petersen <martin.petersen@oracle.com>2021-01-14 22:27:45 -0500
commitc53408baa50297ec29641a973ce78856900d910a (patch)
tree08e7c9da1be13c2ca14e8638a8d03c6920d9ff10
parente95eef3fc0bcb3c5a3145c583f0d177f02381195 (diff)
scsi: ibmvfc: Advertise client support for using hardware channels
Previous patches have plumbed the necessary Sub-CRQ interface and channel negotiation MADs to fully channelize via hardware backed queues. Advertise client support via NPIV Login capability IBMVFC_CAN_USE_CHANNELS when the client bits have MQ enabled via vhost->mq_enabled, or when channels were already in use during a subsequent NPIV Login. The later is required because channel support is only renegotiated after a CRQ pair is broken. Simple NPIV Logout/Logins require the client to continue to advertise the channel capability until the CRQ pair between the client is broken. Link: https://lore.kernel.org/r/20210114203148.246656-14-tyreld@linux.ibm.com Reviewed-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
-rw-r--r--drivers/scsi/ibmvscsi/ibmvfc.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index a8d3a34d9871..31f0e55098d6 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -1410,6 +1410,10 @@ static void ibmvfc_set_login_info(struct ibmvfc_host *vhost)
login_info->max_cmds = cpu_to_be32(max_requests + IBMVFC_NUM_INTERNAL_REQ);
login_info->capabilities = cpu_to_be64(IBMVFC_CAN_MIGRATE | IBMVFC_CAN_SEND_VF_WWPN);
+
+ if (vhost->mq_enabled || vhost->using_channels)
+ login_info->capabilities |= cpu_to_be64(IBMVFC_CAN_USE_CHANNELS);
+
login_info->async.va = cpu_to_be64(vhost->async_crq.msg_token);
login_info->async.len = cpu_to_be32(async_crq->size *
sizeof(*async_crq->msgs.async));