net: ethernet: mvneta: fix MVNETA_SKB_HEADROOM alignment

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Commit ca23cb0bc5 ("mvneta: MVNETA_SKB_HEADROOM set last 3 bits to zero")
added headroom alignment check against 8.
Hovewer (if we imagine that NET_SKB_PAD or XDP_PACKET_HEADROOM is not
aligned to cacheline size), it actually aligns headroom down, while
skb/xdp_buff headroom should be *at least* equal to one of the values
(depending on XDP prog presence).
So, fix the check to align the value up. This satisfies both
hardware/driver and network stack requirements.

Fixes: ca23cb0bc5 ("mvneta: MVNETA_SKB_HEADROOM set last 3 bits to zero")
Signed-off-by: Alexander Lobakin <bloodyreaper@yandex.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Alexander Lobakin 2020-06-05 15:53:24 +03:00 • committed by David S. Miller

parent 178f67b128

commit e224372076

1 changed files with 1 additions and 1 deletions

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drivers/net/ethernet/marvell/mvneta.c

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