netdev - Re: [PATCH net] tcp: cache line align MAX_TCP

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Message-Id: <20200418.154742.987894608917673223.davem@davemloft.net>
Date:   Sat, 18 Apr 2020 15:47:42 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     edumazet@...gle.com
Cc:     netdev@...r.kernel.org, eric.dumazet@...il.com, soheil@...gle.com
Subject: Re: [PATCH net] tcp: cache line align MAX_TCP_HEADER

From: Eric Dumazet <edumazet@...gle.com>
Date: Fri, 17 Apr 2020 07:10:23 -0700

> TCP stack is dumb in how it cooks its output packets.
> 
> Depending on MAX_HEADER value, we might chose a bad ending point
> for the headers.
> 
> If we align the end of TCP headers to cache line boundary, we
> make sure to always use the smallest number of cache lines,
> which always help.
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Applied, thanks Eric.