Extensions API Timestamps

Onload User Guide (UG1586)

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1.2 English

The EF_RX_TIMESTAMPING_ORDERING environment variable allows the user to select either NIC hardware timestamps or timestamps generated by an external equipment in cPacket trailer format.

For more information, refer to onload_ordered_epoll_wait.

The onload_timestamping_request() function supports received packet timestamps from multiple sources with sub-nanosecond resolution.

Timestamps can be generated by the network adapter and/or timestamps applied by an external equipment using the cPacket trailer format.

See onload_timestamping_request for details.