diff mbox series

[v2,10/17] ibmvfc: advertise client support for using hardware channels

Message ID 20201202005329.4538-11-tyreld@linux.ibm.com (mailing list archive)
State Superseded
Headers show
Series ibmvfc: initial MQ development | expand

Checks

Context Check Description
snowpatch_ozlabs/apply_patch warning Failed to apply on branch powerpc/merge (78c312324391ee996944e1196123b0060888e189)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch powerpc/next (0bd4b96d99108b7ea9bac0573957483be7781d70)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch linus/master (509a15421674b9e1a3e1916939d0d0efd3e578da)
snowpatch_ozlabs/apply_patch warning Failed to apply on branch powerpc/fixes (f54db39fbe40731c40aefdd3bc26e7d56d668c64)
snowpatch_ozlabs/apply_patch success Successfully applied on branch linux-next (0eedceafd3a63fd082743c914853ef4b9247dbe6)
snowpatch_ozlabs/checkpatch success total: 0 errors, 0 warnings, 0 checks, 10 lines checked
snowpatch_ozlabs/needsstable success Patch has no Fixes tags

Commit Message

Tyrel Datwyler Dec. 2, 2020, 12:53 a.m. UTC 
Previous patches have plumbed the necessary Sub-CRQ interface and
channel negotiation MADs to fully channelized hardware 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.

Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Reviewed-by: Brian King <brking@linux.vnet.ibm.com>
---
 drivers/scsi/ibmvscsi/ibmvfc.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index bfd3340eb0b6..0e6c9e55a221 100644
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -1282,6 +1282,10 @@  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(vhost->async_crq.size * sizeof(*vhost->async_crq.msgs));
 	strncpy(login_info->partition_name, vhost->partition_name, IBMVFC_MAX_NAME);