Merge branch 'nvme-4.15' of git://git.infradead.org/nvme into for-4.15/block

Pull NVMe changes from Christoph:

"Below are the currently queue nvme updates for Linux 4.15.  There are
a few more things that could make it for this merge window, but I'd
like to get things into linux-next, especially for the unlikely case
that Linus decided to cut -rc8.

Highlights:
 - support for SGLs in the PCIe driver (Chaitanya Kulkarni)
 - disable I/O schedulers for the admin queue (Israel Rukshin)
 - various Fibre Channel fixes and enhancements (James Smart)
 - various refactoring for better code sharing between transports
   (Sagi Grimberg and me)

as well as lots of little bits from various contributors."

2 files changed, 13 insertions, 6 deletions

diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index e5e6becd57d3..f2e3079eecdd 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -272,8 +272,8 @@ void blk_freeze_queue_start(struct request_queue *q);
 void blk_mq_freeze_queue_wait(struct request_queue *q);
 int blk_mq_freeze_queue_wait_timeout(struct request_queue *q,
 				     unsigned long timeout);
-int blk_mq_reinit_tagset(struct blk_mq_tag_set *set,
-			 int (reinit_request)(void *, struct request *));
+int blk_mq_tagset_iter(struct blk_mq_tag_set *set, void *data,
+		int (reinit_request)(void *, struct request *));
 
 int blk_mq_map_queues(struct blk_mq_tag_set *set);
 void blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set, int nr_hw_queues);
diff --git a/include/linux/nvme-fc-driver.h b/include/linux/nvme-fc-driver.h
index a726f96010d5..496ff759f84c 100644
--- a/include/linux/nvme-fc-driver.h
+++ b/include/linux/nvme-fc-driver.h
@@ -40,6 +40,8 @@
  * @node_name: FC WWNN for the port
  * @port_name: FC WWPN for the port
  * @port_role: What NVME roles are supported (see FC_PORT_ROLE_xxx)
+ * @dev_loss_tmo: maximum delay for reconnects to an association on
+ *             this device. Used only on a remoteport.
  *
  * Initialization values for dynamic port fields:
  * @port_id:      FC N_Port_ID currently assigned the port. Upper 8 bits must
@@ -50,6 +52,7 @@ struct nvme_fc_port_info {
 	u64			port_name;
 	u32			port_role;
 	u32			port_id;
+	u32			dev_loss_tmo;
 };
 
 
@@ -102,8 +105,6 @@ enum nvmefc_fcp_datadir {
 };
 
 
-#define NVME_FC_MAX_SEGMENTS		256
-
 /**
  * struct nvmefc_fcp_req - Request structure passed from NVME-FC transport
  *                         to LLDD in order to perform a NVME FCP IO operation.
@@ -202,6 +203,9 @@ enum nvme_fc_obj_state {
  *             The length of the buffer corresponds to the local_priv_sz
  *             value specified in the nvme_fc_port_template supplied by
  *             the LLDD.
+ * @dev_loss_tmo: maximum delay for reconnects to an association on
+ *             this device. To modify, lldd must call
+ *             nvme_fc_set_remoteport_devloss().
  *
  * Fields with dynamic values. Values may change base on link state. LLDD
  * may reference fields directly to change them. Initialized by the
@@ -259,10 +263,9 @@ struct nvme_fc_remote_port {
 	u32 port_role;
 	u64 node_name;
 	u64 port_name;
-
 	struct nvme_fc_local_port *localport;
-
 	void *private;
+	u32 dev_loss_tmo;
 
 	/* dynamic fields */
 	u32 port_id;
@@ -446,6 +449,10 @@ int nvme_fc_register_remoteport(struct nvme_fc_local_port *localport,
 
 int nvme_fc_unregister_remoteport(struct nvme_fc_remote_port *remoteport);
 
+void nvme_fc_rescan_remoteport(struct nvme_fc_remote_port *remoteport);
+
+int nvme_fc_set_remoteport_devloss(struct nvme_fc_remote_port *remoteport,
+			u32 dev_loss_tmo);
 
 
 /*