linux-kernel - Re: [PATCH net-next] net: document a side effect of ip_local_reserved

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Date:   Thu, 01 Apr 2021 23:20:09 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Otto Hollmann <otto.hollmann@...e.com>
Cc:     davem@...emloft.net, kuba@...nel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, corbet@....net, dsahern@...nel.org,
        mkubecek@...e.cz, edumazet@...gle.com
Subject: Re: [PATCH net-next] net: document a side effect of
 ip_local_reserved_ports

Hello:

This patch was applied to netdev/net-next.git (refs/heads/master):

On Thu,  1 Apr 2021 17:57:05 +0200 you wrote:
> If there is overlapp between ip_local_port_range and ip_local_reserved_ports with a huge reserved block, it will affect probability of selecting ephemeral ports, see file net/ipv4/inet_hashtables.c:723
> 
>     int __inet_hash_connect(
>     ...
>             for (i = 0; i < remaining; i += 2, port += 2) {
>                     if (unlikely(port >= high))
>                             port -= remaining;
>                     if (inet_is_local_reserved_port(net, port))
>                             continue;
> 
> [...]

Here is the summary with links:
  - [net-next] net: document a side effect of ip_local_reserved_ports
    https://git.kernel.org/netdev/net-next/c/a7a80b17c750

You are awesome, thank you!
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