ibmvnic: Allow multiple ltbs in txpool ltb_set

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Allow multiple LTBs in the txpool's ltb_set. i.e rather than using
a single large LTB, use several smaller LTBs.

The first n-1 LTBs will all be of the same size. The size of the last
LTB in the set depends on the number of buffers and buffer (mtu) size.
This strategy hopefully allows more reuse of the initial LTBs and also
reduces the chances of an allocation failure (of the large LTB) when
system is low in memory.

Suggested-by: Brian King <brking@linux.ibm.com>
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.ibm.com>
Signed-off-by: Dany Madden <drt@linux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Sukadev Bhattiprolu 2022-04-13 13:10:26 -04:00 • committed by Jakub Kicinski

parent a75de82057

commit 93b1ebb348

2 changed files with 35 additions and 20 deletions

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53

drivers/net/ethernet/ibm/ibmvnic.c

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2

drivers/net/ethernet/ibm/ibmvnic.h

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