On Wed, Sep 16, 2020 at 10:34 AM Greg Rose <[email protected]> wrote:
>
> From: Tonghao Zhang <[email protected]>
>
> Upstream commit:
> commit 61ca533c0e94104c35fcb7858a23ec9a05d78143
> Author: Tonghao Zhang <[email protected]>
> Date: Thu Nov 14 23:51:08 2019 +0800
>
> net: openvswitch: don't call pad_packet if not necessary
>
> The nla_put_u16/nla_put_u32 makes sure that
> *attrlen is align. The call tree is that:
>
> nla_put_u16/nla_put_u32
> -> nla_put attrlen = sizeof(u16) or sizeof(u32)
> -> __nla_put attrlen
> -> __nla_reserve attrlen
> -> skb_put(skb, nla_total_size(attrlen))
>
> nla_total_size returns the total length of attribute
> including padding.
>
> Cc: Joe Stringer <[email protected]>
> Cc: William Tu <[email protected]>
> Signed-off-by: Tonghao Zhang <[email protected]>
> Acked-by: Pravin B Shelar <[email protected]>
> Signed-off-by: David S. Miller <[email protected]>
>
> Cc: Tonghao Zhang <[email protected]>
> Reviewed-by: Tonghao Zhang <[email protected]>
> Signed-off-by: Greg Rose <[email protected]>
> ---
Acked-by: Yi-Hung Wei <[email protected]>
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