1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
66 lines
2.2 KiB
Text
66 lines
2.2 KiB
Text
SYSFS FILES
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For each InfiniBand device, the InfiniBand drivers create the
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following files under /sys/class/infiniband/<device name>:
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node_type - Node type (CA, switch or router)
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node_guid - Node GUID
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sys_image_guid - System image GUID
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In addition, there is a "ports" subdirectory, with one subdirectory
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for each port. For example, if mthca0 is a 2-port HCA, there will
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be two directories:
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/sys/class/infiniband/mthca0/ports/1
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/sys/class/infiniband/mthca0/ports/2
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(A switch will only have a single "0" subdirectory for switch port
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0; no subdirectory is created for normal switch ports)
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In each port subdirectory, the following files are created:
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cap_mask - Port capability mask
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lid - Port LID
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lid_mask_count - Port LID mask count
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rate - Port data rate (active width * active speed)
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sm_lid - Subnet manager LID for port's subnet
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sm_sl - Subnet manager SL for port's subnet
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state - Port state (DOWN, INIT, ARMED, ACTIVE or ACTIVE_DEFER)
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phys_state - Port physical state (Sleep, Polling, LinkUp, etc)
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There is also a "counters" subdirectory, with files
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VL15_dropped
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excessive_buffer_overrun_errors
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link_downed
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link_error_recovery
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local_link_integrity_errors
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port_rcv_constraint_errors
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port_rcv_data
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port_rcv_errors
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port_rcv_packets
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port_rcv_remote_physical_errors
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port_rcv_switch_relay_errors
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port_xmit_constraint_errors
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port_xmit_data
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port_xmit_discards
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port_xmit_packets
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symbol_error
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Each of these files contains the corresponding value from the port's
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Performance Management PortCounters attribute, as described in
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section 16.1.3.5 of the InfiniBand Architecture Specification.
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The "pkeys" and "gids" subdirectories contain one file for each
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entry in the port's P_Key or GID table respectively. For example,
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ports/1/pkeys/10 contains the value at index 10 in port 1's P_Key
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table.
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MTHCA
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The Mellanox HCA driver also creates the files:
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hw_rev - Hardware revision number
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fw_ver - Firmware version
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hca_type - HCA type: "MT23108", "MT25208 (MT23108 compat mode)",
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or "MT25208"
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