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-SYSFS FILES
-
- For each InfiniBand device, the InfiniBand drivers create the
- following files under /sys/class/infiniband/<device name>:
-
- node_type - Node type (CA, switch or router)
- node_guid - Node GUID
- sys_image_guid - System image GUID
-
- In addition, there is a "ports" subdirectory, with one subdirectory
- for each port. For example, if mthca0 is a 2-port HCA, there will
- be two directories:
-
- /sys/class/infiniband/mthca0/ports/1
- /sys/class/infiniband/mthca0/ports/2
-
- (A switch will only have a single "0" subdirectory for switch port
- 0; no subdirectory is created for normal switch ports)
-
- In each port subdirectory, the following files are created:
-
- cap_mask - Port capability mask
- lid - Port LID
- lid_mask_count - Port LID mask count
- rate - Port data rate (active width * active speed)
- sm_lid - Subnet manager LID for port's subnet
- sm_sl - Subnet manager SL for port's subnet
- state - Port state (DOWN, INIT, ARMED, ACTIVE or ACTIVE_DEFER)
- phys_state - Port physical state (Sleep, Polling, LinkUp, etc)
-
- There is also a "counters" subdirectory, with files
-
- VL15_dropped
- excessive_buffer_overrun_errors
- link_downed
- link_error_recovery
- local_link_integrity_errors
- port_rcv_constraint_errors
- port_rcv_data
- port_rcv_errors
- port_rcv_packets
- port_rcv_remote_physical_errors
- port_rcv_switch_relay_errors
- port_xmit_constraint_errors
- port_xmit_data
- port_xmit_discards
- port_xmit_packets
- symbol_error
-
- Each of these files contains the corresponding value from the port's
- Performance Management PortCounters attribute, as described in
- section 16.1.3.5 of the InfiniBand Architecture Specification.
-
- 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.
-
-MTHCA
-
- The Mellanox HCA driver also creates the files:
-
- hw_rev - Hardware revision number
- fw_ver - Firmware version
- hca_type - HCA type: "MT23108", "MT25208 (MT23108 compat mode)",
- or "MT25208"