qede: Correct XDP forward unmapping

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Driver is currently using dma_unmap_single() with the address it
passed to device for the purpose of forwarding, but the XDP
transmission buffer was originally a page allocated for the rx-queue.
The mapped address is likely to differ from the original mapped
address due to the placement offset.

This difference is going to get even bigger once we support headroom.

Cache the original mapped address of the page, and use it for unmapping
of the buffer when completion arrives for the XDP forwarded packet.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Mintz, Yuval 2017-04-07 11:04:58 +03:00 • committed by David S. Miller

parent 10a0176e4e

commit 89e1afc447

3 changed files with 20 additions and 14 deletions

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9

drivers/net/ethernet/qlogic/qede/qede.h

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17

drivers/net/ethernet/qlogic/qede/qede_fp.c

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8

drivers/net/ethernet/qlogic/qede/qede_main.c

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