Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 784 insertions, 0 deletions

diff --git a/Documentation/ABI/stable/sysfs-class-infiniband b/Documentation/ABI/stable/sysfs-class-infiniband
new file mode 100644
index 0000000000..694f23a03a
--- /dev/null
+++ b/Documentation/ABI/stable/sysfs-class-infiniband
@@ -0,0 +1,784 @@
+sysfs interface common for all infiniband devices
+-------------------------------------------------
+
+What:		/sys/class/infiniband/<device>/node_type
+What:		/sys/class/infiniband/<device>/node_guid
+What:		/sys/class/infiniband/<device>/sys_image_guid
+Date:		Apr, 2005
+KernelVersion:	v2.6.12
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		=============== ===========================================
+		node_type:	(RO) Node type (CA, RNIC, usNIC, usNIC UDP,
+				switch or router)
+
+		node_guid:	(RO) Node GUID
+
+		sys_image_guid:	(RO) System image GUID
+		=============== ===========================================
+
+
+What:		/sys/class/infiniband/<device>/node_desc
+Date:		Feb, 2006
+KernelVersion:	v2.6.17
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		(RW) Update the node description with information such as the
+		node's hostname, so that IB network management software can tie
+		its view to the real world.
+
+
+What:		/sys/class/infiniband/<device>/fw_ver
+Date:		Jun, 2016
+KernelVersion:	v4.10
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		(RO) Display firmware version
+
+
+What:		/sys/class/infiniband/<device>/ports/<port-num>/lid
+What:		/sys/class/infiniband/<device>/ports/<port-num>/rate
+What:		/sys/class/infiniband/<device>/ports/<port-num>/lid_mask_count
+What:		/sys/class/infiniband/<device>/ports/<port-num>/sm_sl
+What:		/sys/class/infiniband/<device>/ports/<port-num>/sm_lid
+What:		/sys/class/infiniband/<device>/ports/<port-num>/state
+What:		/sys/class/infiniband/<device>/ports/<port-num>/phys_state
+What:		/sys/class/infiniband/<device>/ports/<port-num>/cap_mask
+Date:		Apr, 2005
+KernelVersion:	v2.6.12
+Contact:	linux-rdma@vger.kernel.org
+Description:
+
+		=============== ===============================================
+		lid:		(RO) Port LID
+
+		rate:		(RO) Port data rate (active width * active
+				speed)
+
+		lid_mask_count:	(RO) Port LID mask count
+
+		sm_sl:		(RO) Subnet manager SL for port's subnet
+
+		sm_lid:		(RO) Subnet manager LID for port's subnet
+
+		state:		(RO) Port state (DOWN, INIT, ARMED, ACTIVE or
+				ACTIVE_DEFER)
+
+		phys_state:	(RO) Port physical state (Sleep, Polling,
+				LinkUp, etc)
+
+		cap_mask:	(RO) Port capability mask. 2 bits here are
+				settable- IsCommunicationManagementSupported
+				(set when CM module is loaded) and IsSM (set
+				via open of issmN file).
+		=============== ===============================================
+
+
+What:		/sys/class/infiniband/<device>/ports/<port-num>/link_layer
+Date:		Oct, 2010
+KernelVersion:	v2.6.37
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		(RO) Link layer type information (Infiniband or Ethernet type)
+
+
+What:		/sys/class/infiniband/<device>/ports/<port-num>/counters/symbol_error
+What:		/sys/class/infiniband/<device>/ports/<port-num>/counters/port_rcv_errors
+What:		/sys/class/infiniband/<device>/ports/<port-num>/counters/port_rcv_remote_physical_errors
+What:		/sys/class/infiniband/<device>/ports/<port-num>/counters/port_rcv_switch_relay_errors
+What:		/sys/class/infiniband/<device>/ports/<port-num>/counters/link_error_recovery
+What:		/sys/class/infiniband/<device>/ports/<port-num>/counters/port_xmit_constraint_errors
+What:		/sys/class/infiniband/<device>/ports/<port-num>/counters/port_rcv_contraint_errors
+What:		/sys/class/infiniband/<device>/ports/<port-num>/counters/local_link_integrity_errors
+What:		/sys/class/infiniband/<device>/ports/<port-num>/counters/excessive_buffer_overrun_errors
+What:		/sys/class/infiniband/<device>/ports/<port-num>/counters/port_xmit_data
+What:		/sys/class/infiniband/<device>/ports/<port-num>/counters/port_rcv_data
+What:		/sys/class/infiniband/<device>/ports/<port-num>/counters/port_xmit_packets
+What:		/sys/class/infiniband/<device>/ports/<port-num>/counters/port_rcv_packets
+What:		/sys/class/infiniband/<device>/ports/<port-num>/counters/unicast_rcv_packets
+What:		/sys/class/infiniband/<device>/ports/<port-num>/counters/unicast_xmit_packets
+What:		/sys/class/infiniband/<device>/ports/<port-num>/counters/multicast_rcv_packets
+What:		/sys/class/infiniband/<device>/ports/<port-num>/counters/multicast_xmit_packets
+What:		/sys/class/infiniband/<device>/ports/<port-num>/counters/link_downed
+What:		/sys/class/infiniband/<device>/ports/<port-num>/counters/port_xmit_discards
+What:		/sys/class/infiniband/<device>/ports/<port-num>/counters/VL15_dropped
+What:		/sys/class/infiniband/<device>/ports/<port-num>/counters/port_xmit_wait
+Date:		Apr, 2005
+KernelVersion:	v2.6.12
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		**Errors info**:
+
+		symbol_error: (RO) Total number of minor link errors detected on
+		one or more physical lanes.
+
+		port_rcv_errors : (RO) Total number of packets containing an
+		error that were received on the port.
+
+		port_rcv_remote_physical_errors : (RO) Total number of packets
+		marked with the EBP delimiter received on the port.
+
+		port_rcv_switch_relay_errors : (RO) Total number of packets
+		received on the port that were discarded because they could not
+		be forwarded by the switch relay.
+
+		link_error_recovery: (RO) Total number of times the Port
+		Training state machine has successfully completed the link error
+		recovery process.
+
+		port_xmit_constraint_errors: (RO) Total number of packets not
+		transmitted from the switch physical port due to outbound raw
+		filtering or failing outbound partition or IP version check.
+
+		port_rcv_constraint_errors: (RO) Total number of packets
+		received on the switch physical port that are discarded due to
+		inbound raw filtering or failing inbound partition or IP version
+		check.
+
+		local_link_integrity_errors: (RO) The number of times that the
+		count of local physical errors exceeded the threshold specified
+		by LocalPhyErrors
+
+		excessive_buffer_overrun_errors: (RO) This counter, indicates an
+		input buffer overrun. It indicates possible misconfiguration of
+		a port, either by the Subnet Manager (SM) or by user
+		intervention. It can also indicate hardware issues or extremely
+		poor link signal integrity
+
+		**Data info**:
+
+		port_xmit_data: (RO) Total number of data octets, divided by 4
+		(lanes), transmitted on all VLs. This is 64 bit counter
+
+		port_rcv_data: (RO) Total number of data octets, divided by 4
+		(lanes), received on all VLs. This is 64 bit counter.
+
+		port_xmit_packets: (RO) Total number of packets transmitted on
+		all VLs from this port. This may include packets with errors.
+		This is 64 bit counter.
+
+		port_rcv_packets: (RO) Total number of packets (this may include
+		packets containing Errors. This is 64 bit counter.
+
+		link_downed: (RO) Total number of times the Port Training state
+		machine has failed the link error recovery process and downed
+		the link.
+
+		unicast_rcv_packets: (RO) Total number of unicast packets,
+		including unicast packets containing errors.
+
+		unicast_xmit_packets: (RO) Total number of unicast packets
+		transmitted on all VLs from the port. This may include unicast
+		packets with errors.
+
+		multicast_rcv_packets: (RO) Total number of multicast packets,
+		including multicast packets containing errors.
+
+		multicast_xmit_packets: (RO) Total number of multicast packets
+		transmitted on all VLs from the port. This may include multicast
+		packets with errors.
+
+		**Misc info**:
+
+		port_xmit_discards: (RO) Total number of outbound packets
+		discarded by the port because the port is down or congested.
+
+		VL15_dropped: (RO) Number of incoming VL15 packets dropped due
+		to resource limitations (e.g., lack of buffers) of the port.
+
+		port_xmit_wait: (RO) The number of ticks during which the port
+		had data to transmit but no data was sent during the entire tick
+		(either because of insufficient credits or because of lack of
+		arbitration).
+
+		Each of these files contains the corresponding value from the
+		port's Performance Management PortCounters attribute, as
+		described in the InfiniBand Architecture Specification.
+
+
+What:		/sys/class/infiniband/<device-name>/hw_counters/lifespan
+What:		/sys/class/infiniband/<device-name>/ports/<port-num>/hw_counters/lifespan
+Date:		May, 2016
+KernelVersion:	4.6
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		The optional "hw_counters" subdirectory can be under either the
+		parent device or the port subdirectories or both. If present,
+		there are a list of counters provided by the hardware. They may
+		match some of the counters in the counters directory, but they
+		often include many other counters. In addition to the various
+		counters, there will be a file named "lifespan" that configures
+		how frequently the core should update the counters when they are
+		being accessed (counters are not updated if they are not being
+		accessed). The lifespan is in milliseconds and defaults to 10
+		unless set to something else by the driver. Users may echo a
+		value between 0-10000 to the lifespan file to set the length
+		of time between updates in milliseconds.
+
+
+What:		/sys/class/infiniband/<hca>/ports/<port-number>/gid_attrs/ndevs/<gid-index>
+Date:		November 29, 2015
+KernelVersion:	4.4.0
+Contact:	linux-rdma@vger.kernel.org
+Description: 	The net-device's name associated with the GID resides
+		at index <gid-index>.
+
+What:		/sys/class/infiniband/<hca>/ports/<port-number>/gid_attrs/types/<gid-index>
+Date:		November 29, 2015
+KernelVersion:	4.4.0
+Contact:	linux-rdma@vger.kernel.org
+Description: 	The RoCE type of the associated GID resides at index <gid-index>.
+		This could either be "IB/RoCE v1" for IB and RoCE v1 based GIDs
+		or "RoCE v2" for RoCE v2 based GIDs.
+
+
+What:		/sys/class/infiniband_mad/umad<N>/ibdev
+What:		/sys/class/infiniband_mad/umad<N>/port
+What:		/sys/class/infiniband_mad/issm<N>/ibdev
+What:		/sys/class/infiniband_mad/issm<N>/port
+Date:		Apr, 2005
+KernelVersion:	v2.6.12
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		Each port of each InfiniBand device has a "umad" device and an
+		"issm" device attached. For example, a two-port HCA will have
+		two umad devices and two issm devices, while a switch will have
+		one device of each type (for switch port 0).
+
+		======= =====================================
+		ibdev:	(RO) Show Infiniband (IB) device name
+
+		port:	(RO) Display port number
+		======= =====================================
+
+
+What:		/sys/class/infiniband_mad/abi_version
+Date:		Apr, 2005
+KernelVersion:	v2.6.12
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		(RO) Value is incremented if any changes are made that break
+		userspace ABI compatibility of umad & issm devices.
+
+
+What:		/sys/class/infiniband_verbs/uverbs<N>/ibdev
+What:		/sys/class/infiniband_verbs/uverbs<N>/abi_version
+Date:		Sept, 2005
+KernelVersion:	v2.6.14
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		=============== ===========================================
+		ibdev:		(RO) Display Infiniband (IB) device name
+
+		abi_version:	(RO) Show ABI version of IB device specific
+				interfaces.
+		=============== ===========================================
+
+
+What:		/sys/class/infiniband_verbs/abi_version
+Date:		Sep, 2005
+KernelVersion:	v2.6.14
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		(RO) Value is incremented if any changes are made that break
+		userspace ABI compatibility of uverbs devices.
+
+
+sysfs interface for Mellanox IB HCA low-level driver (mthca)
+------------------------------------------------------------
+
+What:		/sys/class/infiniband/mthcaX/hw_rev
+What:		/sys/class/infiniband/mthcaX/hca_type
+What:		/sys/class/infiniband/mthcaX/board_id
+Date:		Apr, 2005
+KernelVersion:	v2.6.12
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		=============== ================================================
+		hw_rev:		(RO) Hardware revision number
+
+		hca_type:	(RO) Host Channel Adapter type: MT23108, MT25208
+				(MT23108 compat mode), MT25208 or MT25204
+
+		board_id:	(RO) Manufacturing board ID
+		=============== ================================================
+
+
+sysfs interface for Mellanox ConnectX HCA IB driver (mlx4)
+----------------------------------------------------------
+
+What:		/sys/class/infiniband/mlx4_X/hw_rev
+What:		/sys/class/infiniband/mlx4_X/hca_type
+What:		/sys/class/infiniband/mlx4_X/board_id
+Date:		Sep, 2007
+KernelVersion:	v2.6.24
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		=============== ===============================
+		hw_rev:		(RO) Hardware revision number
+
+		hca_type:	(RO) Host channel adapter type
+
+		board_id:	(RO) Manufacturing board ID
+		=============== ===============================
+
+
+What:		/sys/class/infiniband/mlx4_X/iov/ports/<port-num>/gids/<n>
+What:		/sys/class/infiniband/mlx4_X/iov/ports/<port-num>/admin_guids/<n>
+What:		/sys/class/infiniband/mlx4_X/iov/ports/<port-num>/pkeys/<n>
+What:		/sys/class/infiniband/mlx4_X/iov/ports/<port-num>/mcgs/
+What:		/sys/class/infiniband/mlx4_X/iov/ports/<pci-slot-num>/ports/<m>/gid_idx/0
+What:		/sys/class/infiniband/mlx4_X/iov/ports/<pci-slot-num>/ports/<m>/pkey_idx/<n>
+Date:		Aug, 2012
+KernelVersion:	v3.6.15
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		The sysfs iov directory is used to manage and examine the port
+		P_Key and guid paravirtualization. This directory is added only
+		for the master -- slaves do not have it.
+
+		Under iov/ports, the administrator may examine the gid and P_Key
+		tables as they are present in the device (and as are seen in the
+		"network view" presented to the SM).
+
+		The "pkeys" and "gids" subdirectories contain one file for each
+		entry in the port's P_Key or GID table respectively. For
+		example, ports/1/pkeys/10 contains the value at index 10 in port
+		1's P_Key table.
+
+		======================= ==========================================
+		gids/<n>:		(RO) The physical port gids n = 0..127
+
+		admin_guids/<n>:	(RW) Allows examining or changing the
+					administrative state of a given GUID
+					n = 0..127
+
+		pkeys/<n>:		(RO) Displays the contents of the physical
+					key table n = 0..126
+
+		mcgs/:			(RO) Multicast group table
+
+		<m>/gid_idx/0:		(RO) Display the GID mapping m = 1..2
+
+		<m>/pkey_idx/<n>:	(RW) Writable except for RoCE pkeys.
+					m = 1..2, n = 0..126
+
+					Under the iov/<pci slot number>
+					directories, the admin may map the index
+					numbers in the physical tables (as under
+					iov/ports) to the paravirtualized index
+					numbers that guests see.
+
+					For example, if the administrator, for
+					port 1 on guest 2 maps physical pkey
+					index 10 to virtual index 1, then that
+					guest, whenever it uses its pkey index
+					1, will actually be using the real pkey
+					index 10.
+		======================= ==========================================
+
+
+What:		/sys/class/infiniband/mlx4_X/iov/<pci-slot-num>/ports/<m>/smi_enabled
+What:           /sys/class/infiniband/mlx4_X/iov/<pci-slot-num>/ports/<m>/enable_smi_admin
+Date:		May, 2014
+KernelVersion:	v3.15.7
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		Enabling QP0 on VFs for selected VF/port. By default, no VFs are
+		enabled for QP0 operation.
+
+		================= ==== ===========================================
+		smi_enabled:	  (RO) Indicates whether smi is currently enabled
+				       for the indicated VF/port
+
+		enable_smi_admin: (RW) Used by the admin to request that smi
+				       capability be enabled or disabled for the
+				       indicated VF/port. 0 = disable, 1 = enable.
+		================= ==== ===========================================
+
+		The requested enablement will occur at the next reset of the VF
+		(e.g. driver restart on the VM which owns the VF).
+
+
+sysfs interface for Chelsio T4/T5 RDMA driver (cxgb4)
+-----------------------------------------------------
+
+What:		/sys/class/infiniband/cxgb4_X/hw_rev
+What:		/sys/class/infiniband/cxgb4_X/hca_type
+What:		/sys/class/infiniband/cxgb4_X/board_id
+Date:		Apr, 2010
+KernelVersion:	v2.6.35
+Contact:	linux-rdma@vger.kernel.org
+Description:
+
+		=============== =============================================
+		hw_rev:		(RO) Hardware revision number
+
+		hca_type:	(RO) Driver short name. Should normally match
+				the name in its bus driver structure (e.g.
+				pci_driver::name)
+
+		board_id:	(RO) Manufacturing board id. (Vendor + device
+				information)
+		=============== =============================================
+
+
+sysfs interface for Intel IB driver qib
+---------------------------------------
+
+What:		/sys/class/infiniband/qibX/version
+What:		/sys/class/infiniband/qibX/hw_rev
+What:		/sys/class/infiniband/qibX/hca_type
+What:		/sys/class/infiniband/qibX/board_id
+What:		/sys/class/infiniband/qibX/boardversion
+What:		/sys/class/infiniband/qibX/nctxts
+What:		/sys/class/infiniband/qibX/localbus_info
+What:		/sys/class/infiniband/qibX/tempsense
+What:		/sys/class/infiniband/qibX/serial
+What:		/sys/class/infiniband/qibX/nfreectxts
+What:		/sys/class/infiniband/qibX/chip_reset
+Date:		May, 2010
+KernelVersion:	v2.6.35
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		=============== ======================================================
+		version:	(RO) Display version information of installed software
+				and drivers.
+
+		hw_rev:		(RO) Hardware revision number
+
+		hca_type:	(RO) Host channel adapter type
+
+		board_id:	(RO) Manufacturing board id
+
+		boardversion:	(RO) Current version of the chip architecture
+
+		nctxts:		(RO) Return the number of user ports (contexts)
+				available
+
+		localbus_info:	(RO) Human readable localbus info
+
+		tempsense:	(RO) Display temp sense registers in decimal
+
+		serial:		(RO) Serial number of the HCA
+
+		nfreectxts:	(RO) The number of free user ports (contexts)
+				available.
+
+		chip_reset:	(WO) Reset the chip if possible by writing
+				"reset" to this file. Only allowed if no user
+				contexts are open that use chip resources.
+		=============== ======================================================
+
+
+What:		/sys/class/infiniband/qibX/ports/<N>/sl2vl/[0-15]
+Date:		May, 2010
+KernelVersion:	v2.6.35
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		(RO) The directory contains 16 files numbered 0-15 that specify
+		the Service Level (SL). Listing the SL files returns the Virtual
+		Lane (VL) as programmed by the SL.
+
+What:		/sys/class/infiniband/qibX/ports/<N>/CCMgtA/cc_settings_bin
+What:		/sys/class/infiniband/qibX/ports/<N>/CCMgtA/cc_table_bin
+Date:		May, 2010
+KernelVersion:	v2.6.35
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		Per-port congestion control. Both are binary attributes.
+
+		=============== ================================================
+		cc_table_bin	(RO) Congestion control table size followed by
+				table entries.
+
+		cc_settings_bin (RO) Congestion settings: port control, control
+				map and an array of 16 entries for the
+				congestion entries - increase, timer, event log
+				trigger threshold and the minimum injection rate
+				delay.
+		=============== ================================================
+
+What:		/sys/class/infiniband/qibX/ports/<N>/linkstate/loopback
+What:		/sys/class/infiniband/qibX/ports/<N>/linkstate/led_override
+What:		/sys/class/infiniband/qibX/ports/<N>/linkstate/hrtbt_enable
+What:		/sys/class/infiniband/qibX/ports/<N>/linkstate/status
+What:		/sys/class/infiniband/qibX/ports/<N>/linkstate/status_str
+Date:		May, 2010
+KernelVersion:	v2.6.35
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		[to be documented]
+
+		=============== ===============================================
+		loopback:	(WO)
+		led_override:	(WO)
+		hrtbt_enable:	(RW)
+		status:		(RO)
+
+		status_str:	(RO) Displays information about the link state,
+				possible cable/switch problems, and hardware
+				errors. Possible states are- "Initted",
+				"Present", "IB_link_up", "IB_configured" or
+				"Fatal_Hardware_Error".
+		=============== ===============================================
+
+What:		/sys/class/infiniband/qibX/ports/<N>/diag_counters/rc_resends
+What:		/sys/class/infiniband/qibX/ports/<N>/diag_counters/seq_naks
+What:		/sys/class/infiniband/qibX/ports/<N>/diag_counters/rdma_seq
+What:		/sys/class/infiniband/qibX/ports/<N>/diag_counters/rnr_naks
+What:		/sys/class/infiniband/qibX/ports/<N>/diag_counters/other_naks
+What:		/sys/class/infiniband/qibX/ports/<N>/diag_counters/rc_timeouts
+What:		/sys/class/infiniband/qibX/ports/<N>/diag_counters/look_pkts
+What:		/sys/class/infiniband/qibX/ports/<N>/diag_counters/pkt_drops
+What:		/sys/class/infiniband/qibX/ports/<N>/diag_counters/dma_wait
+What:		/sys/class/infiniband/qibX/ports/<N>/diag_counters/unaligned
+Date:		May, 2010
+KernelVersion:	v2.6.35
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		[to be documented]
+
+
+sysfs interface for Mellanox Connect-IB HCA driver mlx5
+-------------------------------------------------------
+
+What:		/sys/class/infiniband/mlx5_X/hw_rev
+What:		/sys/class/infiniband/mlx5_X/hca_type
+What:		/sys/class/infiniband/mlx5_X/reg_pages
+What:		/sys/class/infiniband/mlx5_X/fw_pages
+Date:		Jul, 2013
+KernelVersion:	v3.11
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		[to be documented]
+
+
+sysfs interface for Cisco VIC (usNIC) Verbs Driver
+--------------------------------------------------
+
+What:		/sys/class/infiniband/usnic_X/board_id
+What:		/sys/class/infiniband/usnic_X/config
+What:		/sys/class/infiniband/usnic_X/qp_per_vf
+What:		/sys/class/infiniband/usnic_X/max_vf
+What:		/sys/class/infiniband/usnic_X/cq_per_vf
+What:		/sys/class/infiniband/usnic_X/iface
+Date:		Sep, 2013
+KernelVersion:	v3.14
+Contact:	Christian Benvenuti <benve@cisco.com>,
+		Dave Goodell <dgoodell@cisco.com>,
+		linux-rdma@vger.kernel.org
+Description:
+
+		=============== ===============================================
+		board_id:	(RO) Manufacturing board id
+
+		config:		(RO) Report the configuration for this PF
+
+		qp_per_vf:	(RO) Queue pairs per virtual function.
+
+		max_vf:		(RO) Max virtual functions
+
+		cq_per_vf:	(RO) Completion queue per virtual function
+
+		iface:		(RO) Shows which network interface this usNIC
+				entry is associated to (visible with ifconfig).
+		=============== ===============================================
+
+What:		/sys/class/infiniband/usnic_X/qpn/summary
+What:		/sys/class/infiniband/usnic_X/qpn/context
+Date:		Sep, 2013
+KernelVersion:	v3.14
+Contact:	Christian Benvenuti <benve@cisco.com>,
+		Dave Goodell <dgoodell@cisco.com>,
+		linux-rdma@vger.kernel.org
+Description:
+		[to be documented]
+
+
+sysfs interface for Emulex RoCE HCA Driver
+------------------------------------------
+
+What:		/sys/class/infiniband/ocrdmaX/hw_rev
+Date:		Feb, 2014
+KernelVersion:	v3.14
+Description:
+		hw_rev:		(RO) Hardware revision number
+
+What:		/sys/class/infiniband/ocrdmaX/hca_type
+Date:		Jun, 2014
+KernelVersion:	v3.16
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		hca_type:	(RO) Display FW version
+
+
+sysfs interface for Intel Omni-Path driver (HFI1)
+-------------------------------------------------
+
+What:		/sys/class/infiniband/hfi1_X/hw_rev
+What:		/sys/class/infiniband/hfi1_X/board_id
+What:		/sys/class/infiniband/hfi1_X/nctxts
+What:		/sys/class/infiniband/hfi1_X/serial
+What:		/sys/class/infiniband/hfi1_X/chip_reset
+What:		/sys/class/infiniband/hfi1_X/boardversion
+What:		/sys/class/infiniband/hfi1_X/nfreectxts
+What:		/sys/class/infiniband/hfi1_X/tempsense
+Date:		May, 2016
+KernelVersion:	v4.6
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		=============== =============================================
+		hw_rev:		(RO) Hardware revision number
+
+		board_id:	(RO) Manufacturing board id
+
+		nctxts:		(RO) Total contexts available.
+
+		serial:		(RO) Board serial number
+
+		chip_reset:	(WO) Write "reset" to this file to reset the
+				chip if possible. Only allowed if no user
+				contexts are open that use chip resources.
+
+		boardversion:	(RO) Human readable board info
+
+		nfreectxts:	(RO) The number of free user ports (contexts)
+				available.
+
+		tempsense:	(RO) Thermal sense information
+		=============== =============================================
+
+
+What:		/sys/class/infiniband/hfi1_X/ports/<N>/CCMgtA/cc_settings_bin
+What:		/sys/class/infiniband/hfi1_X/ports/<N>/CCMgtA/cc_table_bin
+What:		/sys/class/infiniband/hfi1_X/ports/<N>/CCMgtA/cc_prescan
+Date:		May, 2016
+KernelVersion:	v4.6
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		Per-port congestion control.
+
+		=============== ================================================
+		cc_table_bin	(RO) CCA tables used by PSM2 Congestion control
+				table size followed by table entries. Binary
+				attribute.
+
+		cc_settings_bin (RO) Congestion settings: port control, control
+				map and an array of 16 entries for the
+				congestion entries - increase, timer, event log
+				trigger threshold and the minimum injection rate
+				delay. Binary attribute.
+
+		cc_prescan	(RW) enable prescanning for faster BECN
+				response. Write "on" to enable and "off" to
+				disable.
+		=============== ================================================
+
+What:		/sys/class/infiniband/hfi1_X/ports/<N>/sc2vl/[0-31]
+What:		/sys/class/infiniband/hfi1_X/ports/<N>/sl2sc/[0-31]
+What:		/sys/class/infiniband/hfi1_X/ports/<N>/vl2mtu/[0-15]
+Date:		May, 2016
+KernelVersion:	v4.6
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		=============== ===================================================
+		sc2vl/:		(RO) 32 files (0 - 31) used to translate sl->vl
+
+		sl2sc/:		(RO) 32 files (0 - 31) used to translate sl->sc
+
+		vl2mtu/:	(RO) 16 files (0 - 15) used to determine MTU for vl
+		=============== ===================================================
+
+
+What:		/sys/class/infiniband/hfi1_X/sdma_<N>/cpu_list
+What:		/sys/class/infiniband/hfi1_X/sdma_<N>/vl
+Date:		Sept, 2016
+KernelVersion:	v4.8
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		sdma<N>/ contains one directory per sdma engine (0 - 15)
+
+		=============== ==============================================
+		cpu_list:	(RW) List of cpus for user-process to sdma
+				engine assignment.
+
+		vl:		(RO) Displays the virtual lane (vl) the sdma
+				engine maps to.
+		=============== ==============================================
+
+		This interface gives the user control on the affinity settings
+		for the device. As an example, to set an sdma engine irq
+		affinity and thread affinity of a user processes to use the
+		sdma engine, which is "near" in terms of NUMA configuration, or
+		physical cpu location, the user will do::
+
+		  echo "3" > /proc/irq/<N>/smp_affinity_list
+		  echo "4-7" > /sys/devices/.../sdma3/cpu_list
+		  cat /sys/devices/.../sdma3/vl
+		  0
+		  echo "8" > /proc/irq/<M>/smp_affinity_list
+		  echo "9-12" > /sys/devices/.../sdma4/cpu_list
+		  cat /sys/devices/.../sdma4/vl
+		  1
+
+		to make sure that when a process runs on cpus 4,5,6, or 7, and
+		uses vl=0, then sdma engine 3 is selected by the driver, and
+		also the interrupt of the sdma engine 3 is steered to cpu 3.
+		Similarly, when a process runs on cpus 9,10,11, or 12 and sets
+		vl=1, then engine 4 will be selected and the irq of the sdma
+		engine 4 is steered to cpu 8.  This assumes that in the above N
+		is the irq number of "sdma3", and M is irq number of "sdma4" in
+		the /proc/interrupts file.
+
+sysfs interface for QLogic qedr NIC Driver
+------------------------------------------
+
+What:		/sys/class/infiniband/qedrX/hw_rev
+What:		/sys/class/infiniband/qedrX/hca_type
+Date:		Oct, 2016
+KernelVersion:	v4.10
+Contact:	linux-rdma@vger.kernel.org
+Description:
+
+		=============== ==== ========================
+		hw_rev:		(RO) Hardware revision number
+
+		hca_type:	(RO) Display HCA type
+		=============== ==== ========================
+
+
+sysfs interface for VMware Paravirtual RDMA driver
+--------------------------------------------------
+
+What:		/sys/class/infiniband/vmw_pvrdmaX/hw_rev
+What:		/sys/class/infiniband/vmw_pvrdmaX/hca_type
+What:		/sys/class/infiniband/vmw_pvrdmaX/board_id
+Date:		Oct, 2016
+KernelVersion:	v4.10
+Contact:	linux-rdma@vger.kernel.org
+Description:
+
+		=============== ==== =====================================
+		hw_rev:		(RO) Hardware revision number
+
+		hca_type:	(RO) Host channel adapter type
+
+		board_id:	(RO) Display PVRDMA manufacturing board ID
+		=============== ==== =====================================
+
+
+sysfs interface for Broadcom NetXtreme-E RoCE driver
+----------------------------------------------------
+
+What:		/sys/class/infiniband/bnxt_reX/hw_rev
+What:		/sys/class/infiniband/bnxt_reX/hca_type
+Date:		Feb, 2017
+KernelVersion:	v4.11
+Contact:	linux-rdma@vger.kernel.org
+Description:
+		=============== ==== =========================
+		hw_rev:		(RO) Hardware revision number
+
+		hca_type:	(RO) Host channel adapter type
+		=============== ==== =========================