infiniband: add EFA (AWS Elastic Fabric Adapter) support#3668
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infiniband: add EFA collector unit tests docs: document EFA support in the infiniband collector Signed-off-by: Yizheng Jiao <jyizheng@gmail.com>
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What
Add support for AWS Elastic Fabric Adapter (EFA) NICs in the infiniband collector.
Why
EFA devices show up under
/sys/class/infiniband/like IB HCAs but don'tfollow the IB spec — they store bytes/packets in
hw_counters/{tx,rx}_{bytes,pkts}instead of
counters/port_xmit_dataetc. As a result, the collector emitsstate_idandrate_bytes_per_secondforrdmap*devices butport_data_*/port_packets_*are silently absent on AWS p4d/p5/p6instances.
How
0x1d0f.hw_counters/and emit under the same existingport_data_*/port_packets_*metric names so IB dashboards just work.efa_*prefix(retrans / rx_drops / rdma_read / rdma_write / ...).
Tests
Update()93%.p6-b200.48xlargenode: exporter output matchescat /sys/class/infiniband/rdmap*/ports/1/hw_counters/tx_bytesbyte-for-byte.
Docs:
docs/INFINIBAND_EFA.md.