1 sysfs interface common for all infiniband devices
2 -------------------------------------------------
4 What: /sys/class/infiniband/<device>/node_type
5 What: /sys/class/infiniband/<device>/node_guid
6 What: /sys/class/infiniband/<device>/sys_image_guid
9 Contact: linux-rdma@vger.kernel.org
11 node_type: (RO) Node type (CA, RNIC, usNIC, usNIC UDP,
14 node_guid: (RO) Node GUID
16 sys_image_guid: (RO) System image GUID
19 What: /sys/class/infiniband/<device>/node_desc
21 KernelVersion: v2.6.17
22 Contact: linux-rdma@vger.kernel.org
24 (RW) Update the node description with information such as the
25 node's hostname, so that IB network management software can tie
26 its view to the real world.
29 What: /sys/class/infiniband/<device>/fw_ver
32 Contact: linux-rdma@vger.kernel.org
34 (RO) Display firmware version
37 What: /sys/class/infiniband/<device>/ports/<port-num>/lid
38 What: /sys/class/infiniband/<device>/ports/<port-num>/rate
39 What: /sys/class/infiniband/<device>/ports/<port-num>/lid_mask_count
40 What: /sys/class/infiniband/<device>/ports/<port-num>/sm_sl
41 What: /sys/class/infiniband/<device>/ports/<port-num>/sm_lid
42 What: /sys/class/infiniband/<device>/ports/<port-num>/state
43 What: /sys/class/infiniband/<device>/ports/<port-num>/phys_state
44 What: /sys/class/infiniband/<device>/ports/<port-num>/cap_mask
46 KernelVersion: v2.6.12
47 Contact: linux-rdma@vger.kernel.org
52 rate: (RO) Port data rate (active width * active
55 lid_mask_count: (RO) Port LID mask count
57 sm_sl: (RO) Subnet manager SL for port's subnet
59 sm_lid: (RO) Subnet manager LID for port's subnet
61 state: (RO) Port state (DOWN, INIT, ARMED, ACTIVE or
64 phys_state: (RO) Port physical state (Sleep, Polling,
67 cap_mask: (RO) Port capability mask. 2 bits here are
68 settable- IsCommunicationManagementSupported
69 (set when CM module is loaded) and IsSM (set via
73 What: /sys/class/infiniband/<device>/ports/<port-num>/link_layer
75 KernelVersion: v2.6.37
76 Contact: linux-rdma@vger.kernel.org
78 (RO) Link layer type information (Infiniband or Ethernet type)
81 What: /sys/class/infiniband/<device>/ports/<port-num>/counters/symbol_error
82 What: /sys/class/infiniband/<device>/ports/<port-num>/counters/port_rcv_errors
83 What: /sys/class/infiniband/<device>/ports/<port-num>/counters/port_rcv_remote_physical_errors
84 What: /sys/class/infiniband/<device>/ports/<port-num>/counters/port_rcv_switch_relay_errors
85 What: /sys/class/infiniband/<device>/ports/<port-num>/counters/link_error_recovery
86 What: /sys/class/infiniband/<device>/ports/<port-num>/counters/port_xmit_constraint_errors
87 What: /sys/class/infiniband/<device>/ports/<port-num>/counters/port_rcv_contraint_errors
88 What: /sys/class/infiniband/<device>/ports/<port-num>/counters/local_link_integrity_errors
89 What: /sys/class/infiniband/<device>/ports/<port-num>/counters/excessive_buffer_overrun_errors
90 What: /sys/class/infiniband/<device>/ports/<port-num>/counters/port_xmit_data
91 What: /sys/class/infiniband/<device>/ports/<port-num>/counters/port_rcv_data
92 What: /sys/class/infiniband/<device>/ports/<port-num>/counters/port_xmit_packets
93 What: /sys/class/infiniband/<device>/ports/<port-num>/counters/port_rcv_packets
94 What: /sys/class/infiniband/<device>/ports/<port-num>/counters/unicast_rcv_packets
95 What: /sys/class/infiniband/<device>/ports/<port-num>/counters/unicast_xmit_packets
96 What: /sys/class/infiniband/<device>/ports/<port-num>/counters/multicast_rcv_packets
97 What: /sys/class/infiniband/<device>/ports/<port-num>/counters/multicast_xmit_packets
98 What: /sys/class/infiniband/<device>/ports/<port-num>/counters/link_downed
99 What: /sys/class/infiniband/<device>/ports/<port-num>/counters/port_xmit_discards
100 What: /sys/class/infiniband/<device>/ports/<port-num>/counters/VL15_dropped
101 What: /sys/class/infiniband/<device>/ports/<port-num>/counters/port_xmit_wait
103 KernelVersion: v2.6.12
104 Contact: linux-rdma@vger.kernel.org
109 symbol_error: (RO) Total number of minor link errors detected on
110 one or more physical lanes.
112 port_rcv_errors : (RO) Total number of packets containing an
113 error that were received on the port.
115 port_rcv_remote_physical_errors : (RO) Total number of packets
116 marked with the EBP delimiter received on the port.
118 port_rcv_switch_relay_errors : (RO) Total number of packets
119 received on the port that were discarded because they could not
120 be forwarded by the switch relay.
122 link_error_recovery: (RO) Total number of times the Port
123 Training state machine has successfully completed the link error
126 port_xmit_constraint_errors: (RO) Total number of packets not
127 transmitted from the switch physical port due to outbound raw
128 filtering or failing outbound partition or IP version check.
130 port_rcv_constraint_errors: (RO) Total number of packets
131 received on the switch physical port that are discarded due to
132 inbound raw filtering or failing inbound partition or IP version
135 local_link_integrity_errors: (RO) The number of times that the
136 count of local physical errors exceeded the threshold specified
139 excessive_buffer_overrun_errors: (RO) This counter, indicates an
140 input buffer overrun. It indicates possible misconfiguration of
141 a port, either by the Subnet Manager (SM) or by user
142 intervention. It can also indicate hardware issues or extremely
143 poor link signal integrity
148 port_xmit_data: (RO) Total number of data octets, divided by 4
149 (lanes), transmitted on all VLs. This is 64 bit counter
151 port_rcv_data: (RO) Total number of data octets, divided by 4
152 (lanes), received on all VLs. This is 64 bit counter.
154 port_xmit_packets: (RO) Total number of packets transmitted on
155 all VLs from this port. This may include packets with errors.
156 This is 64 bit counter.
158 port_rcv_packets: (RO) Total number of packets (this may include
159 packets containing Errors. This is 64 bit counter.
161 link_downed: (RO) Total number of times the Port Training state
162 machine has failed the link error recovery process and downed
165 unicast_rcv_packets: (RO) Total number of unicast packets,
166 including unicast packets containing errors.
168 unicast_xmit_packets: (RO) Total number of unicast packets
169 transmitted on all VLs from the port. This may include unicast
172 multicast_rcv_packets: (RO) Total number of multicast packets,
173 including multicast packets containing errors.
175 multicast_xmit_packets: (RO) Total number of multicast packets
176 transmitted on all VLs from the port. This may include multicast
182 port_xmit_discards: (RO) Total number of outbound packets
183 discarded by the port because the port is down or congested.
185 VL15_dropped: (RO) Number of incoming VL15 packets dropped due
186 to resource limitations (e.g., lack of buffers) of the port.
188 port_xmit_wait: (RO) The number of ticks during which the port
189 had data to transmit but no data was sent during the entire tick
190 (either because of insufficient credits or because of lack of
193 Each of these files contains the corresponding value from the
194 port's Performance Management PortCounters attribute, as
195 described in the InfiniBand Architecture Specification.
198 What: /sys/class/infiniband/<device-name>/hw_counters/lifespan
199 What: /sys/class/infiniband/<device-name>/ports/<port-num>/hw_counters/lifespan
202 Contact: linux-rdma@vger.kernel.org
204 The optional "hw_counters" subdirectory can be under either the
205 parent device or the port subdirectories or both. If present,
206 there are a list of counters provided by the hardware. They may
207 match some of the counters in the counters directory, but they
208 often include many other counters. In addition to the various
209 counters, there will be a file named "lifespan" that configures
210 how frequently the core should update the counters when they are
211 being accessed (counters are not updated if they are not being
212 accessed). The lifespan is in milliseconds and defaults to 10
213 unless set to something else by the driver. Users may echo a
214 value between 0-10000 to the lifespan file to set the length
215 of time between updates in milliseconds.
218 What: /sys/class/infiniband/<hca>/ports/<port-number>/gid_attrs/ndevs/<gid-index>
219 Date: November 29, 2015
221 Contact: linux-rdma@vger.kernel.org
222 Description: The net-device's name associated with the GID resides
223 at index <gid-index>.
225 What: /sys/class/infiniband/<hca>/ports/<port-number>/gid_attrs/types/<gid-index>
226 Date: November 29, 2015
228 Contact: linux-rdma@vger.kernel.org
229 Description: The RoCE type of the associated GID resides at index <gid-index>.
230 This could either be "IB/RoCE v1" for IB and RoCE v1 based GIDs
231 or "RoCE v2" for RoCE v2 based GIDs.
234 What: /sys/class/infiniband_mad/umadN/ibdev
235 What: /sys/class/infiniband_mad/umadN/port
236 What: /sys/class/infiniband_mad/issmN/ibdev
237 What: /sys/class/infiniband_mad/issmN/port
239 KernelVersion: v2.6.12
240 Contact: linux-rdma@vger.kernel.org
242 Each port of each InfiniBand device has a "umad" device and an
243 "issm" device attached. For example, a two-port HCA will have
244 two umad devices and two issm devices, while a switch will have
245 one device of each type (for switch port 0).
247 ibdev: (RO) Show Infiniband (IB) device name
249 port: (RO) Display port number
252 What: /sys/class/infiniband_mad/abi_version
254 KernelVersion: v2.6.12
255 Contact: linux-rdma@vger.kernel.org
257 (RO) Value is incremented if any changes are made that break
258 userspace ABI compatibility of umad & issm devices.
261 What: /sys/class/infiniband_verbs/uverbsN/ibdev
262 What: /sys/class/infiniband_verbs/uverbsN/abi_version
264 KernelVersion: v2.6.14
265 Contact: linux-rdma@vger.kernel.org
267 ibdev: (RO) Display Infiniband (IB) device name
269 abi_version: (RO) Show ABI version of IB device specific
273 What: /sys/class/infiniband_verbs/abi_version
275 KernelVersion: v2.6.14
276 Contact: linux-rdma@vger.kernel.org
278 (RO) Value is incremented if any changes are made that break
279 userspace ABI compatibility of uverbs devices.
282 sysfs interface for Mellanox IB HCA low-level driver (mthca)
283 ------------------------------------------------------------
285 What: /sys/class/infiniband/mthcaX/hw_rev
286 What: /sys/class/infiniband/mthcaX/hca_type
287 What: /sys/class/infiniband/mthcaX/board_id
289 KernelVersion: v2.6.12
290 Contact: linux-rdma@vger.kernel.org
292 hw_rev: (RO) Hardware revision number
294 hca_type: (RO) Host Channel Adapter type: MT23108, MT25208
295 (MT23108 compat mode), MT25208 or MT25204
297 board_id: (RO) Manufacturing board ID
300 sysfs interface for Mellanox ConnectX HCA IB driver (mlx4)
301 ----------------------------------------------------------
303 What: /sys/class/infiniband/mlx4_X/hw_rev
304 What: /sys/class/infiniband/mlx4_X/hca_type
305 What: /sys/class/infiniband/mlx4_X/board_id
307 KernelVersion: v2.6.24
308 Contact: linux-rdma@vger.kernel.org
310 hw_rev: (RO) Hardware revision number
312 hca_type: (RO) Host channel adapter type
314 board_id: (RO) Manufacturing board ID
317 What: /sys/class/infiniband/mlx4_X/iov/ports/<port-num>/gids/<n>
318 What: /sys/class/infiniband/mlx4_X/iov/ports/<port-num>/admin_guids/<n>
319 What: /sys/class/infiniband/mlx4_X/iov/ports/<port-num>/pkeys/<n>
320 What: /sys/class/infiniband/mlx4_X/iov/ports/<port-num>/mcgs/
321 What: /sys/class/infiniband/mlx4_X/iov/ports/<pci-slot-num>/ports/<m>/gid_idx/0
322 What: /sys/class/infiniband/mlx4_X/iov/ports/<pci-slot-num>/ports/<m>/pkey_idx/<n>
324 KernelVersion: v3.6.15
325 Contact: linux-rdma@vger.kernel.org
327 The sysfs iov directory is used to manage and examine the port
328 P_Key and guid paravirtualization. This directory is added only
329 for the master -- slaves do not have it.
331 Under iov/ports, the administrator may examine the gid and P_Key
332 tables as they are present in the device (and as are seen in the
333 "network view" presented to the SM).
335 The "pkeys" and "gids" subdirectories contain one file for each
336 entry in the port's P_Key or GID table respectively. For
337 example, ports/1/pkeys/10 contains the value at index 10 in port
340 gids/<n>: (RO) The physical port gids n = 0..127
342 admin_guids/<n>: (RW) Allows examining or changing the
343 administrative state of a given GUID
346 pkeys/<n>: (RO) Displays the contents of the physical
349 mcgs/: (RO) Muticast group table
351 <m>/gid_idx/0: (RO) Display the GID mapping m = 1..2
353 <m>/pkey_idx/<n>: (RW) Writable except for RoCE pkeys.
356 Under the iov/<pci slot number>
357 directories, the admin may map the index
358 numbers in the physical tables (as under
359 iov/ports) to the paravirtualized index
360 numbers that guests see.
362 For example, if the administrator, for
363 port 1 on guest 2 maps physical pkey
364 index 10 to virtual index 1, then that
365 guest, whenever it uses its pkey index
366 1, will actually be using the real pkey
370 What: /sys/class/infiniband/mlx4_X/iov/<pci-slot-num>/ports/<m>/smi_enabled
371 What: /sys/class/infiniband/mlx4_X/iov/<pci-slot-num>/ports/<m>/enable_smi_admin
373 KernelVersion: v3.15.7
374 Contact: linux-rdma@vger.kernel.org
376 Enabling QP0 on VFs for selected VF/port. By default, no VFs are
377 enabled for QP0 operation.
379 smi_enabled: (RO) Indicates whether smi is currently enabled
380 for the indicated VF/port
382 enable_smi_admin:(RW) Used by the admin to request that smi
383 capability be enabled or disabled for the
384 indicated VF/port. 0 = disable, 1 = enable.
386 The requested enablement will occur at the next reset of the VF
387 (e.g. driver restart on the VM which owns the VF).
390 sysfs interface for Chelsio T4/T5 RDMA driver (cxgb4)
391 -----------------------------------------------------
393 What: /sys/class/infiniband/cxgb4_X/hw_rev
394 What: /sys/class/infiniband/cxgb4_X/hca_type
395 What: /sys/class/infiniband/cxgb4_X/board_id
397 KernelVersion: v2.6.35
398 Contact: linux-rdma@vger.kernel.org
401 hw_rev: (RO) Hardware revision number
403 hca_type: (RO) Driver short name. Should normally match
404 the name in its bus driver structure (e.g.
407 board_id: (RO) Manufacturing board id. (Vendor + device
411 sysfs interface for Intel IB driver qib
412 ---------------------------------------
414 What: /sys/class/infiniband/qibX/version
415 What: /sys/class/infiniband/qibX/hw_rev
416 What: /sys/class/infiniband/qibX/hca_type
417 What: /sys/class/infiniband/qibX/board_id
418 What: /sys/class/infiniband/qibX/boardversion
419 What: /sys/class/infiniband/qibX/nctxts
420 What: /sys/class/infiniband/qibX/localbus_info
421 What: /sys/class/infiniband/qibX/tempsense
422 What: /sys/class/infiniband/qibX/serial
423 What: /sys/class/infiniband/qibX/nfreectxts
424 What: /sys/class/infiniband/qibX/chip_reset
426 KernelVersion: v2.6.35
427 Contact: linux-rdma@vger.kernel.org
429 version: (RO) Display version information of installed software
432 hw_rev: (RO) Hardware revision number
434 hca_type: (RO) Host channel adapter type
436 board_id: (RO) Manufacturing board id
438 boardversion: (RO) Current version of the chip architecture
440 nctxts: (RO) Return the number of user ports (contexts)
443 localbus_info: (RO) Human readable localbus info
445 tempsense: (RO) Display temp sense registers in decimal
447 serial: (RO) Serial number of the HCA
449 nfreectxts: (RO) The number of free user ports (contexts)
452 chip_reset: (WO) Reset the chip if possible by writing
453 "reset" to this file. Only allowed if no user
454 contexts are open that use chip resources.
457 What: /sys/class/infiniband/qibX/ports/N/sl2vl/[0-15]
459 KernelVersion: v2.6.35
460 Contact: linux-rdma@vger.kernel.org
462 (RO) The directory contains 16 files numbered 0-15 that specify
463 the Service Level (SL). Listing the SL files returns the Virtual
464 Lane (VL) as programmed by the SL.
466 What: /sys/class/infiniband/qibX/ports/N/CCMgtA/cc_settings_bin
467 What: /sys/class/infiniband/qibX/ports/N/CCMgtA/cc_table_bin
469 KernelVersion: v2.6.35
470 Contact: linux-rdma@vger.kernel.org
472 Per-port congestion control. Both are binary attributes.
474 cc_table_bin: (RO) Congestion control table size followed by
477 cc_settings_bin:(RO) Congestion settings: port control, control
478 map and an array of 16 entries for the
479 congestion entries - increase, timer, event log
480 trigger threshold and the minimum injection rate
483 What: /sys/class/infiniband/qibX/ports/N/linkstate/loopback
484 What: /sys/class/infiniband/qibX/ports/N/linkstate/led_override
485 What: /sys/class/infiniband/qibX/ports/N/linkstate/hrtbt_enable
486 What: /sys/class/infiniband/qibX/ports/N/linkstate/status
487 What: /sys/class/infiniband/qibX/ports/N/linkstate/status_str
489 KernelVersion: v2.6.35
490 Contact: linux-rdma@vger.kernel.org
499 status_str: (RO) Displays information about the link state,
500 possible cable/switch problems, and hardware
501 errors. Possible states are- "Initted",
502 "Present", "IB_link_up", "IB_configured" or
503 "Fatal_Hardware_Error".
505 What: /sys/class/infiniband/qibX/ports/N/diag_counters/rc_resends
506 What: /sys/class/infiniband/qibX/ports/N/diag_counters/seq_naks
507 What: /sys/class/infiniband/qibX/ports/N/diag_counters/rdma_seq
508 What: /sys/class/infiniband/qibX/ports/N/diag_counters/rnr_naks
509 What: /sys/class/infiniband/qibX/ports/N/diag_counters/other_naks
510 What: /sys/class/infiniband/qibX/ports/N/diag_counters/rc_timeouts
511 What: /sys/class/infiniband/qibX/ports/N/diag_counters/look_pkts
512 What: /sys/class/infiniband/qibX/ports/N/diag_counters/pkt_drops
513 What: /sys/class/infiniband/qibX/ports/N/diag_counters/dma_wait
514 What: /sys/class/infiniband/qibX/ports/N/diag_counters/unaligned
516 KernelVersion: v2.6.35
517 Contact: linux-rdma@vger.kernel.org
522 sysfs interface for Mellanox Connect-IB HCA driver mlx5
523 -------------------------------------------------------
525 What: /sys/class/infiniband/mlx5_X/hw_rev
526 What: /sys/class/infiniband/mlx5_X/hca_type
527 What: /sys/class/infiniband/mlx5_X/reg_pages
528 What: /sys/class/infiniband/mlx5_X/fw_pages
531 Contact: linux-rdma@vger.kernel.org
536 sysfs interface for Cisco VIC (usNIC) Verbs Driver
537 --------------------------------------------------
539 What: /sys/class/infiniband/usnic_X/board_id
540 What: /sys/class/infiniband/usnic_X/config
541 What: /sys/class/infiniband/usnic_X/qp_per_vf
542 What: /sys/class/infiniband/usnic_X/max_vf
543 What: /sys/class/infiniband/usnic_X/cq_per_vf
544 What: /sys/class/infiniband/usnic_X/iface
547 Contact: Christian Benvenuti <benve@cisco.com>,
548 Dave Goodell <dgoodell@cisco.com>,
549 linux-rdma@vger.kernel.org
552 board_id: (RO) Manufacturing board id
554 config: (RO) Report the configuration for this PF
556 qp_per_vf: (RO) Queue pairs per virtual function.
558 max_vf: (RO) Max virtual functions
560 cq_per_vf: (RO) Completion queue per virtual function
562 iface: (RO) Shows which network interface this usNIC
563 entry is associated to (visible with ifconfig).
565 What: /sys/class/infiniband/usnic_X/qpn/summary
566 What: /sys/class/infiniband/usnic_X/qpn/context
569 Contact: Christian Benvenuti <benve@cisco.com>,
570 Dave Goodell <dgoodell@cisco.com>,
571 linux-rdma@vger.kernel.org
576 sysfs interface for Emulex RoCE HCA Driver
577 ------------------------------------------
579 What: /sys/class/infiniband/ocrdmaX/hw_rev
583 hw_rev: (RO) Hardware revision number
585 What: /sys/class/infiniband/ocrdmaX/hca_type
588 Contact: linux-rdma@vger.kernel.org
590 hca_type: (RO) Display FW version
593 sysfs interface for Intel Omni-Path driver (HFI1)
594 -------------------------------------------------
596 What: /sys/class/infiniband/hfi1_X/hw_rev
597 What: /sys/class/infiniband/hfi1_X/board_id
598 What: /sys/class/infiniband/hfi1_X/nctxts
599 What: /sys/class/infiniband/hfi1_X/serial
600 What: /sys/class/infiniband/hfi1_X/chip_reset
601 What: /sys/class/infiniband/hfi1_X/boardversion
602 What: /sys/class/infiniband/hfi1_X/nfreectxts
603 What: /sys/class/infiniband/hfi1_X/tempsense
606 Contact: linux-rdma@vger.kernel.org
608 hw_rev: (RO) Hardware revision number
610 board_id: (RO) Manufacturing board id
612 nctxts: (RO) Total contexts available.
614 serial: (RO) Board serial number
616 chip_reset: (WO) Write "reset" to this file to reset the
617 chip if possible. Only allowed if no user
618 contexts are open that use chip resources.
620 boardversion: (RO) Human readable board info
622 nfreectxts: (RO) The number of free user ports (contexts)
625 tempsense: (RO) Thermal sense information
628 What: /sys/class/infiniband/hfi1_X/ports/N/CCMgtA/cc_settings_bin
629 What: /sys/class/infiniband/hfi1_X/ports/N/CCMgtA/cc_table_bin
630 What: /sys/class/infiniband/hfi1_X/ports/N/CCMgtA/cc_prescan
633 Contact: linux-rdma@vger.kernel.org
635 Per-port congestion control.
637 cc_table_bin: (RO) CCA tables used by PSM2 Congestion control
638 table size followed by table entries. Binary
641 cc_settings_bin:(RO) Congestion settings: port control, control
642 map and an array of 16 entries for the
643 congestion entries - increase, timer, event log
644 trigger threshold and the minimum injection rate
645 delay. Binary attribute.
647 cc_prescan: (RW) enable prescanning for faster BECN
648 response. Write "on" to enable and "off" to
651 What: /sys/class/infiniband/hfi1_X/ports/N/sc2vl/[0-31]
652 What: /sys/class/infiniband/hfi1_X/ports/N/sl2sc/[0-31]
653 What: /sys/class/infiniband/hfi1_X/ports/N/vl2mtu/[0-15]
656 Contact: linux-rdma@vger.kernel.org
658 sc2vl/: (RO) 32 files (0 - 31) used to translate sl->vl
660 sl2sc/: (RO) 32 files (0 - 31) used to translate sl->sc
662 vl2mtu/: (RO) 16 files (0 - 15) used to determine MTU for vl
665 What: /sys/class/infiniband/hfi1_X/sdma_N/cpu_list
666 What: /sys/class/infiniband/hfi1_X/sdma_N/vl
669 Contact: linux-rdma@vger.kernel.org
671 sdma<N>/ contains one directory per sdma engine (0 - 15)
673 cpu_list: (RW) List of cpus for user-process to sdma
676 vl: (RO) Displays the virtual lane (vl) the sdma
679 This interface gives the user control on the affinity settings
680 for the device. As an example, to set an sdma engine irq
681 affinity and thread affinity of a user processes to use the
682 sdma engine, which is "near" in terms of NUMA configuration, or
683 physical cpu location, the user will do:
685 echo "3" > /proc/irq/<N>/smp_affinity_list
686 echo "4-7" > /sys/devices/.../sdma3/cpu_list
687 cat /sys/devices/.../sdma3/vl
689 echo "8" > /proc/irq/<M>/smp_affinity_list
690 echo "9-12" > /sys/devices/.../sdma4/cpu_list
691 cat /sys/devices/.../sdma4/vl
694 to make sure that when a process runs on cpus 4,5,6, or 7, and
695 uses vl=0, then sdma engine 3 is selected by the driver, and
696 also the interrupt of the sdma engine 3 is steered to cpu 3.
697 Similarly, when a process runs on cpus 9,10,11, or 12 and sets
698 vl=1, then engine 4 will be selected and the irq of the sdma
699 engine 4 is steered to cpu 8. This assumes that in the above N
700 is the irq number of "sdma3", and M is irq number of "sdma4" in
701 the /proc/interrupts file.
704 sysfs interface for Intel(R) X722 iWARP i40iw driver
705 ----------------------------------------------------
707 What: /sys/class/infiniband/i40iwX/hw_rev
708 What: /sys/class/infiniband/i40iwX/hca_type
709 What: /sys/class/infiniband/i40iwX/board_id
712 Contact: linux-rdma@vger.kernel.org
714 hw_rev: (RO) Hardware revision number
716 hca_type: (RO) Show HCA type (I40IW)
718 board_id: (RO) I40IW board ID
721 sysfs interface for QLogic qedr NIC Driver
722 ------------------------------------------
724 What: /sys/class/infiniband/qedrX/hw_rev
725 What: /sys/class/infiniband/qedrX/hca_type
728 Contact: linux-rdma@vger.kernel.org
731 hw_rev: (RO) Hardware revision number
733 hca_type: (RO) Display HCA type
736 sysfs interface for VMware Paravirtual RDMA driver
737 --------------------------------------------------
739 What: /sys/class/infiniband/vmw_pvrdmaX/hw_rev
740 What: /sys/class/infiniband/vmw_pvrdmaX/hca_type
741 What: /sys/class/infiniband/vmw_pvrdmaX/board_id
744 Contact: linux-rdma@vger.kernel.org
747 hw_rev: (RO) Hardware revision number
749 hca_type: (RO) Host channel adapter type
751 board_id: (RO) Display PVRDMA manufacturing board ID
754 sysfs interface for Broadcom NetXtreme-E RoCE driver
755 ----------------------------------------------------
757 What: /sys/class/infiniband/bnxt_reX/hw_rev
758 What: /sys/class/infiniband/bnxt_reX/hca_type
761 Contact: linux-rdma@vger.kernel.org
763 hw_rev: (RO) Hardware revision number
765 hca_type: (RO) Host channel adapter type