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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"
- HFI1
- The hfi1 driver also creates these additional files:
- hw_rev - hardware revision
- board_id - manufacturing board id
- tempsense - thermal sense information
- serial - board serial number
- nfreectxts - number of free user contexts
- nctxts - number of allowed contexts (PSM2)
- chip_reset - diagnostic (root only)
- boardversion - board version
- ports/1/
- CMgtA/
- cc_settings_bin - CCA tables used by PSM2
- cc_table_bin
- sc2v/ - 32 files (0 - 31) used to translate sl->vl
- sl2sc/ - 32 files (0 - 31) used to translate sl->sc
- vl2mtu/ - 16 (0 - 15) files used to determine MTU for vl
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