1 SYSFS FILES
2
3 For each InfiniBand device, the InfiniBand drivers create the
4 following files under /sys/class/infiniband/<device name>:
5
6 node_type - Node type (CA, switch or router)
7 node_guid - Node GUID
8 sys_image_guid - System image GUID
9
10 In addition, there is a "ports" subdirectory, with one subdirectory
11 for each port. For example, if mthca0 is a 2-port HCA, there will
12 be two directories:
13
14 /sys/class/infiniband/mthca0/ports/1
15 /sys/class/infiniband/mthca0/ports/2
16
17 (A switch will only have a single "0" subdirectory for switch port
18 0; no subdirectory is created for normal switch ports)
19
20 In each port subdirectory, the following files are created:
21
22 cap_mask - Port capability mask
23 lid - Port LID
24 lid_mask_count - Port LID mask count
25 rate - Port data rate (active width * active speed)
26 sm_lid - Subnet manager LID for port's subnet
27 sm_sl - Subnet manager SL for port's subnet
28 state - Port state (DOWN, INIT, ARMED, ACTIVE or ACTIVE_DEFER)
29 phys_state - Port physical state (Sleep, Polling, LinkUp, etc)
30
31 There is also a "counters" subdirectory, with files
32
33 VL15_dropped
34 excessive_buffer_overrun_errors
35 link_downed
36 link_error_recovery
37 local_link_integrity_errors
38 port_rcv_constraint_errors
39 port_rcv_data
40 port_rcv_errors
41 port_rcv_packets
42 port_rcv_remote_physical_errors
43 port_rcv_switch_relay_errors
44 port_xmit_constraint_errors
45 port_xmit_data
46 port_xmit_discards
47 port_xmit_packets
48 symbol_error
49
50 Each of these files contains the corresponding value from the port's
51 Performance Management PortCounters attribute, as described in
52 section 16.1.3.5 of the InfiniBand Architecture Specification.
53
54 The "pkeys" and "gids" subdirectories contain one file for each
55 entry in the port's P_Key or GID table respectively. For example,
56 ports/1/pkeys/10 contains the value at index 10 in port 1's P_Key
57 table.
58
59 MTHCA
60
61 The Mellanox HCA driver also creates the files:
62
63 hw_rev - Hardware revision number
64 fw_ver - Firmware version
65 hca_type - HCA type: "MT23108", "MT25208 (MT23108 compat mode)",
66 or "MT25208"
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