linux-imx/Documentation/ABI/stable/sysfs-class-infiniband

sysfs interface common for all infiniband devices

What: /sys/class/infiniband//node_type What: /sys/class/infiniband//node_guid What: /sys/class/infiniband//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//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//fw_ver Date: Jun, 2016 KernelVersion: v4.10 Contact: linux-rdma@vger.kernel.org Description: (RO) Display firmware version

What: /sys/class/infiniband//ports//lid What: /sys/class/infiniband//ports//rate What: /sys/class/infiniband//ports//lid_mask_count What: /sys/class/infiniband//ports//sm_sl What: /sys/class/infiniband//ports//sm_lid What: /sys/class/infiniband//ports//state What: /sys/class/infiniband//ports//phys_state What: /sys/class/infiniband//ports//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//ports//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//ports//counters/symbol_error What: /sys/class/infiniband//ports//counters/port_rcv_errors What: /sys/class/infiniband//ports//counters/port_rcv_remote_physical_errors What: /sys/class/infiniband//ports//counters/port_rcv_switch_relay_errors What: /sys/class/infiniband//ports//counters/link_error_recovery What: /sys/class/infiniband//ports//counters/port_xmit_constraint_errors What: /sys/class/infiniband//ports//counters/port_rcv_contraint_errors What: /sys/class/infiniband//ports//counters/local_link_integrity_errors What: /sys/class/infiniband//ports//counters/excessive_buffer_overrun_errors What: /sys/class/infiniband//ports//counters/port_xmit_data What: /sys/class/infiniband//ports//counters/port_rcv_data What: /sys/class/infiniband//ports//counters/port_xmit_packets What: /sys/class/infiniband//ports//counters/port_rcv_packets What: /sys/class/infiniband//ports//counters/unicast_rcv_packets What: /sys/class/infiniband//ports//counters/unicast_xmit_packets What: /sys/class/infiniband//ports//counters/multicast_rcv_packets What: /sys/class/infiniband//ports//counters/multicast_xmit_packets What: /sys/class/infiniband//ports//counters/link_downed What: /sys/class/infiniband//ports//counters/port_xmit_discards What: /sys/class/infiniband//ports//counters/VL15_dropped What: /sys/class/infiniband//ports//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//hw_counters/lifespan What: /sys/class/infiniband//ports//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//ports//gid_attrs/ndevs/ 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 .

What: /sys/class/infiniband//ports//gid_attrs/types/ 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 . 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/ibdev What: /sys/class/infiniband_mad/umad/port What: /sys/class/infiniband_mad/issm/ibdev What: /sys/class/infiniband_mad/issm/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/ibdev What: /sys/class/infiniband_verbs/uverbs/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//gids/ What: /sys/class/infiniband/mlx4_X/iov/ports//admin_guids/ What: /sys/class/infiniband/mlx4_X/iov/ports//pkeys/ What: /sys/class/infiniband/mlx4_X/iov/ports//mcgs/ What: /sys/class/infiniband/mlx4_X/iov/ports//ports//gid_idx/0 What: /sys/class/infiniband/mlx4_X/iov/ports//ports//pkey_idx/ 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//ports//smi_enabled What: /sys/class/infiniband/mlx4_X/iov//ports//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//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//CCMgtA/cc_settings_bin What: /sys/class/infiniband/qibX/ports//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//linkstate/loopback What: /sys/class/infiniband/qibX/ports//linkstate/led_override What: /sys/class/infiniband/qibX/ports//linkstate/hrtbt_enable What: /sys/class/infiniband/qibX/ports//linkstate/status What: /sys/class/infiniband/qibX/ports//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//diag_counters/rc_resends What: /sys/class/infiniband/qibX/ports//diag_counters/seq_naks What: /sys/class/infiniband/qibX/ports//diag_counters/rdma_seq What: /sys/class/infiniband/qibX/ports//diag_counters/rnr_naks What: /sys/class/infiniband/qibX/ports//diag_counters/other_naks What: /sys/class/infiniband/qibX/ports//diag_counters/rc_timeouts What: /sys/class/infiniband/qibX/ports//diag_counters/look_pkts What: /sys/class/infiniband/qibX/ports//diag_counters/pkt_drops What: /sys/class/infiniband/qibX/ports//diag_counters/dma_wait What: /sys/class/infiniband/qibX/ports//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//CCMgtA/cc_settings_bin What: /sys/class/infiniband/hfi1_X/ports//CCMgtA/cc_table_bin What: /sys/class/infiniband/hfi1_X/ports//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//sc2vl/[0-31] What: /sys/class/infiniband/hfi1_X/ports//sl2sc/[0-31] What: /sys/class/infiniband/hfi1_X/ports//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_/cpu_list What: /sys/class/infiniband/hfi1_X/sdma_/vl Date: Sept, 2016 KernelVersion: v4.8 Contact: linux-rdma@vger.kernel.org Description: sdma/ 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
	=============== ==== =========================