[openib-general] [PATCH] IB/ipoib: NAPI
Roland Dreier
rdreier at cisco.com
Mon Sep 25 09:41:26 PDT 2006
Todd> Its inefficient to peek the CQ if the next operation is
Todd> likely to then be a poll. Performing the poll_and_notify in
Todd> one call is more efficient.
Yes, but if you think carefully about how to implement NAPI for IPoIB,
you'll see that poll-and-notify is not a useful operation. If a
device does not support the "exact" Mellanox CQ notify semantics, then
there is no way around using peek CQ somehow.
- R.
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