ibmvnic: Do not replenish RX buffers after every polling loop

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Reduce the amount of time spent replenishing RX buffers by only doing
so once available buffers has fallen under a certain threshold, in this
case half of the total number of buffers, or if the polling loop exits
before the packets processed is less than its budget. Non-exhaustion of
NAPI budget implies lower incoming packet pressure, allowing the leeway
to refill the buffers in preparation for any impending burst.

Signed-off-by: Dwip N. Banerjee <dnbanerg@us.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Dwip N. Banerjee 2020-11-18 19:12:25 -06:00 • committed by Jakub Kicinski

parent e552aa313b

commit 41ed0a00ff

1 changed files with 4 additions and 1 deletions

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drivers/net/ethernet/ibm/ibmvnic.c

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