From: Willem de Bruijn <willemdebruijn.kernel@gmail•com>
To: Eric Dumazet <edumazet@google•com>,
"David S . Miller" <davem@davemloft•net>,
Jakub Kicinski <kuba@kernel•org>,
Paolo Abeni <pabeni@redhat•com>
Cc: Simon Horman <horms@kernel•org>,
Kuniyuki Iwashima <kuniyu@google•com>,
netdev@vger•kernel.org, eric.dumazet@gmail•com,
Eric Dumazet <edumazet@google•com>
Subject: Re: [PATCH net-next] net: fix off-by-one in udp_flow_src_port() / psp_write_headers()
Date: Mon, 02 Mar 2026 14:58:07 -0500 [thread overview]
Message-ID: <willemdebruijn.kernel.352024981d617@gmail.com> (raw)
In-Reply-To: <20260302163933.1754393-1-edumazet@google.com>
Eric Dumazet wrote:
> udp_flow_src_port() and psp_write_headers() use ip_local_port_range.
>
> ip_local_port_range is inclusive : all ports between min and max
> can be used.
>
> Before this patch, if ip_local_port_range was set to 40000-40001
> 40001 would not be used as a source port.
>
> Use reciprocal_scale() to help code readability.
>
> Not tagged for stable trees, as this change could break user
> expectations.
>
> Signed-off-by: Eric Dumazet <edumazet@google•com>
Reviewed-by: Willem de Bruijn <willemb@google•com>
next prev parent reply other threads:[~2026-03-02 19:58 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-02 16:39 [PATCH net-next] net: fix off-by-one in udp_flow_src_port() / psp_write_headers() Eric Dumazet
2026-03-02 19:58 ` Willem de Bruijn [this message]
2026-03-05 1:01 ` patchwork-bot+netdevbpf
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