Re: [PATCH net] net: ethernet: mvneta: fix MVNETA_SKB_HEADROOM alignment

[David Miller]

From: Alexander Lobakin <bloodyreaper@xxxxxxxxx>
Date: Fri,  5 Jun 2020 15:53:24 +0300

> Commit ca23cb0bc50f ("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: ca23cb0bc50f ("mvneta: MVNETA_SKB_HEADROOM set last 3 bits to zero")
> Signed-off-by: Alexander Lobakin <bloodyreaper@xxxxxxxxx>

Applied, thank you.