bnxt_en: Fix implementation of tx push operation.

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tx push is supported for small packets to reduce DMA latency.  The
following bugs are fixed in this patch:

1. Fix the definition of the push BD which is different from the DMA BD.
2. The push buffer has to be zero padded to the next 64-bit word boundary
or tx checksum won't be correct.
3. Increase the tx push packet threshold to 164 bytes (192 bytes with the BD)
so that small tunneled packets are within the threshold.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

This commit is contained in:

Michael Chan 2016-02-10 17:33:49 -05:00 • committed by David S. Miller

parent 1c49c421f3

commit 4419dbe6a0

2 changed files with 34 additions and 19 deletions

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42

drivers/net/ethernet/broadcom/bnxt/bnxt.c

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11

drivers/net/ethernet/broadcom/bnxt/bnxt.h

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