Merge branch 'nvme-5.3' of git://git.infradead.org/nvme into for-5.3/block

Pull NVMe updates from Christoph:

"A large chunk of NVMe updates for 5.3.  Highlights:

 - improved PCIe suspent support (Keith Busch)
 - error injection support for the admin queue (Akinobu Mita)
 - Fibre Channel discovery improvements (James Smart)
 - tracing improvements including nvmetc tracing support (Minwoo Im)
 - misc fixes and cleanups (Anton Eidelman, Minwoo Im, Chaitanya
   Kulkarni)"

* 'nvme-5.3' of git://git.infradead.org/nvme: (26 commits)
  Documentation: nvme: add an example for nvme fault injection
  nvme: enable to inject errors into admin commands
  nvme: prepare for fault injection into admin commands
  nvmet: introduce target-side trace
  nvme-trace: print result and status in hex format
  nvme-trace: support for fabrics commands in host-side
  nvme-trace: move opcode symbol print to nvme.h
  nvme-trace: do not export nvme_trace_disk_name
  nvme-pci: clean up nvme_remove_dead_ctrl a bit
  nvme-pci: properly report state change failure in nvme_reset_work
  nvme-pci: set the errno on ctrl state change error
  nvme-pci: adjust irq max_vector using num_possible_cpus()
  nvme-pci: remove queue_count_ops for write_queues and poll_queues
  nvme-pci: remove unnecessary zero for static var
  nvme-pci: use host managed power state for suspend
  nvme: introduce nvme_is_fabrics to check fabrics cmd
  nvme: export get and set features
  nvme: fix possible io failures when removing multipathed ns
  nvme-fc: add message when creating new association
  lpfc: add sysfs interface to post NVME RSCN
  ...

2 files changed, 71 insertions, 1 deletions

diff --git a/include/linux/nvme-fc-driver.h b/include/linux/nvme-fc-driver.h
index c48e96436f56..98d904961b33 100644
--- a/include/linux/nvme-fc-driver.h
+++ b/include/linux/nvme-fc-driver.h
@@ -791,6 +791,11 @@ struct nvmet_fc_target_port {
  *       nvmefc_tgt_fcp_req.
  *       Entrypoint is Optional.
  *
+ * @discovery_event:  Called by the transport to generate an RSCN
+ *       change notifications to NVME initiators. The RSCN notifications
+ *       should cause the initiator to rescan the discovery controller
+ *       on the targetport.
+ *
  * @max_hw_queues:  indicates the maximum number of hw queues the LLDD
  *       supports for cpu affinitization.
  *       Value is Mandatory. Must be at least 1.
@@ -832,6 +837,7 @@ struct nvmet_fc_target_template {
 				struct nvmefc_tgt_fcp_req *fcpreq);
 	void (*defer_rcv)(struct nvmet_fc_target_port *tgtport,
 				struct nvmefc_tgt_fcp_req *fcpreq);
+	void (*discovery_event)(struct nvmet_fc_target_port *tgtport);
 
 	u32	max_hw_queues;
 	u16	max_sgl_segments;
diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index 8028adacaff3..d98b2d8baf4e 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -562,6 +562,22 @@ enum nvme_opcode {
 	nvme_cmd_resv_release	= 0x15,
 };
 
+#define nvme_opcode_name(opcode)	{ opcode, #opcode }
+#define show_nvm_opcode_name(val)				\
+	__print_symbolic(val,					\
+		nvme_opcode_name(nvme_cmd_flush),		\
+		nvme_opcode_name(nvme_cmd_write),		\
+		nvme_opcode_name(nvme_cmd_read),		\
+		nvme_opcode_name(nvme_cmd_write_uncor),		\
+		nvme_opcode_name(nvme_cmd_compare),		\
+		nvme_opcode_name(nvme_cmd_write_zeroes),	\
+		nvme_opcode_name(nvme_cmd_dsm),			\
+		nvme_opcode_name(nvme_cmd_resv_register),	\
+		nvme_opcode_name(nvme_cmd_resv_report),		\
+		nvme_opcode_name(nvme_cmd_resv_acquire),	\
+		nvme_opcode_name(nvme_cmd_resv_release))
+
+
 /*
  * Descriptor subtype - lower 4 bits of nvme_(keyed_)sgl_desc identifier
  *
@@ -794,6 +810,32 @@ enum nvme_admin_opcode {
 	nvme_admin_sanitize_nvm		= 0x84,
 };
 
+#define nvme_admin_opcode_name(opcode)	{ opcode, #opcode }
+#define show_admin_opcode_name(val)					\
+	__print_symbolic(val,						\
+		nvme_admin_opcode_name(nvme_admin_delete_sq),		\
+		nvme_admin_opcode_name(nvme_admin_create_sq),		\
+		nvme_admin_opcode_name(nvme_admin_get_log_page),	\
+		nvme_admin_opcode_name(nvme_admin_delete_cq),		\
+		nvme_admin_opcode_name(nvme_admin_create_cq),		\
+		nvme_admin_opcode_name(nvme_admin_identify),		\
+		nvme_admin_opcode_name(nvme_admin_abort_cmd),		\
+		nvme_admin_opcode_name(nvme_admin_set_features),	\
+		nvme_admin_opcode_name(nvme_admin_get_features),	\
+		nvme_admin_opcode_name(nvme_admin_async_event),		\
+		nvme_admin_opcode_name(nvme_admin_ns_mgmt),		\
+		nvme_admin_opcode_name(nvme_admin_activate_fw),		\
+		nvme_admin_opcode_name(nvme_admin_download_fw),		\
+		nvme_admin_opcode_name(nvme_admin_ns_attach),		\
+		nvme_admin_opcode_name(nvme_admin_keep_alive),		\
+		nvme_admin_opcode_name(nvme_admin_directive_send),	\
+		nvme_admin_opcode_name(nvme_admin_directive_recv),	\
+		nvme_admin_opcode_name(nvme_admin_dbbuf),		\
+		nvme_admin_opcode_name(nvme_admin_format_nvm),		\
+		nvme_admin_opcode_name(nvme_admin_security_send),	\
+		nvme_admin_opcode_name(nvme_admin_security_recv),	\
+		nvme_admin_opcode_name(nvme_admin_sanitize_nvm))
+
 enum {
 	NVME_QUEUE_PHYS_CONTIG	= (1 << 0),
 	NVME_CQ_IRQ_ENABLED	= (1 << 1),
@@ -1008,6 +1050,23 @@ enum nvmf_capsule_command {
 	nvme_fabrics_type_property_get	= 0x04,
 };
 
+#define nvme_fabrics_type_name(type)   { type, #type }
+#define show_fabrics_type_name(type)					\
+	__print_symbolic(type,						\
+		nvme_fabrics_type_name(nvme_fabrics_type_property_set),	\
+		nvme_fabrics_type_name(nvme_fabrics_type_connect),	\
+		nvme_fabrics_type_name(nvme_fabrics_type_property_get))
+
+/*
+ * If not fabrics command, fctype will be ignored.
+ */
+#define show_opcode_name(qid, opcode, fctype)			\
+	((opcode) == nvme_fabrics_command ?			\
+	 show_fabrics_type_name(fctype) :			\
+	((qid) ?						\
+	 show_nvm_opcode_name(opcode) :				\
+	 show_admin_opcode_name(opcode)))
+
 struct nvmf_common_command {
 	__u8	opcode;
 	__u8	resv1;
@@ -1165,6 +1224,11 @@ struct nvme_command {
 	};
 };
 
+static inline bool nvme_is_fabrics(struct nvme_command *cmd)
+{
+	return cmd->common.opcode == nvme_fabrics_command;
+}
+
 struct nvme_error_slot {
 	__le64		error_count;
 	__le16		sqid;
@@ -1186,7 +1250,7 @@ static inline bool nvme_is_write(struct nvme_command *cmd)
 	 *
 	 * Why can't we simply have a Fabrics In and Fabrics out command?
 	 */
-	if (unlikely(cmd->common.opcode == nvme_fabrics_command))
+	if (unlikely(nvme_is_fabrics(cmd)))
 		return cmd->fabrics.fctype & 1;
 	return cmd->common.opcode & 1;
 }