1212_cqe_10s #2
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Our NIC can have up to 4 RX packets on 1 CQE. To support this feature, check and process the type CQE_RX_COALESCED_4. The default setting is disabled, to avoid possible regression on latency. And add ethtool handler to switch this feature. To turn it on, run: ethtool -C <nic> rx-frames 4 To turn it off: ethtool -C <nic> rx-frames 1 Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
For RX CQEs with type CQE_RX_COALESCED_4, to measure the coalescing efficiency, add counters to count how many CQEs contain 2, 3, 4 packets respectively. Also, add a counter for the error case of first packet with lenth == 0. Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
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