netdev - Re: [PATCH v2 net-next 0/4] tcp: Add a 2nd listener hashtable (port+addr)

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Message-Id: <20171203.101843.632762941894705268.davem@davemloft.net>
Date:   Sun, 03 Dec 2017 10:18:43 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     kafai@...com
Cc:     netdev@...r.kernel.org, edumazet@...gle.com, kernel-team@...com
Subject: Re: [PATCH v2 net-next 0/4] tcp: Add a 2nd listener hashtable
 (port+addr)

From: Martin KaFai Lau <kafai@...com>
Date: Fri, 1 Dec 2017 12:52:28 -0800

> This patch set adds a 2nd listener hashtable.  It is to resolve
> the performance issue when a process is listening at many IP
> addresses with the same port (e.g. [IP1]:443, [IP2]:443... [IPN]:443)
> 
> v2:
> - Move the new lhash2 and lhash2_mask before the existing
>   listening_hash to avoid adding another cacheline
>   to inet_hashinfo (Suggested by Eric Dumazet, Thanks!)
> - I take this chance to plug an existing 4 bytes hole while
>   adding 'unsigned int lhash2_mask'.
> - Add some comments about lhash2 in inet_hashtables.h

Nice work, series applied.