arm64: mm: define NET_IP_ALIGN to 0

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On arm64, there is no need to add 2 bytes of padding to the start of
each network buffer just to make the IP header appear 32-bit aligned.

Since this might actually adversely affect DMA performance some
platforms, let's override NET_IP_ALIGN to 0 to get rid of this
padding.

Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Tested-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

...

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Ard Biesheuvel 2018-11-07 18:10:38 +01:00 • committed by Catalin Marinas

parent 313a06e636

commit 26a4676faa

1 changed files with 8 additions and 0 deletions

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arch/arm64/include/asm/processor.h

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