qed: Add iWARP support for fpdu spanned over more than two tcp packets

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We continue to maintain a maximum of three buffers per fpdu, to ensure
that there are enough buffers for additional unaligned mpa packets.
To support this, if a fpdu is split over more than two tcp packets, we
use an intermediate buffer to copy the data to the previous buffer, then
we can release the data. We need an intermediate buffer as the initial
buffer partial packet could be located at the end of the packet, not
leaving room for additional data. This is a corner case, and will usually
not be the case.

Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Michal Kalderon 2017-10-09 12:37:54 +03:00 • committed by David S. Miller

parent c7d1d83999

commit 1e28eaad07

2 changed files with 194 additions and 0 deletions

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193

drivers/net/ethernet/qlogic/qed/qed_iwarp.c

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1

drivers/net/ethernet/qlogic/qed/qed_iwarp.h

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