[Cerowrt-devel] SQM Question #2: How does CeroWrt use info gleaned from the link layer adaptation?

[Rich Brown]

QUESTION #2: How does CeroWrt use info gleaned from the link layer adaptation?

Specifically, the link layer adaptation all seem to be designed to compute the actual time it takes to transmit a packet, accounting for Ethernet & PPPoE header bytes, other overhead, and ATM 48-in-53 framing.

How does CeroWrt use this time calculation? Does it simply make sure that the target time doesn’t get too low for a particular flow’s queue? (I could imagine that a short packet over ATM would take 2x the (naive) expected/calculated time for a packet of that length, and that flow would be penalized. Is there more to it?)