linux-kernel - Re: [net-next PATCH 2/2] tcp: Record Rx hash and NAPI ID in tcp_child

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Date:   Mon, 20 Mar 2017 15:06:03 -0700
From:   Eric Dumazet <edumazet@...gle.com>
To:     Alexander Duyck <alexander.duyck@...il.com>
Cc:     netdev <netdev@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>, sridhar.samudrala@...el.com,
        David Miller <davem@...emloft.net>
Subject: Re: [net-next PATCH 2/2] tcp: Record Rx hash and NAPI ID in tcp_child_process

On Mon, Mar 20, 2017 at 2:48 PM, Alexander Duyck
<alexander.duyck@...il.com> wrote:
> From: Alexander Duyck <alexander.h.duyck@...el.com>
>
> While working on some recent busy poll changes we found that child sockets
> were being instantiated without NAPI ID being set.  In our first attempt to
> fix it, it was suggested that we should just pull programming the NAPI ID
> into the function itself since all callers will need to have it set.
>
> In addition to NAPI ID I have decided to also pull in populating the Rx
> hash since it likely has the same problem as NAPI ID but just doesn't have
> the visibility.

It looks like Rx hash was initialized elsewhere (
tcp_get_cookie_sock() & tcp_check_req())

So this probably could be cleaned up, if done at the proper place ;)