From: Pablo Neira Ayuso <pablo@netfilter.org>
To: Jeremy Sowden <jeremy@azazel.net>
Cc: Netfilter Devel <netfilter-devel@vger.kernel.org>
Subject: Re: [PATCH libnetfilter_conntrack 1/2] conntrack: fix BPF code for filtering on big-endian architectures
Date: Mon, 2 Jan 2023 17:19:42 +0100 [thread overview]
Message-ID: <Y7MEHg8GCgxCO7Xb@salvia> (raw)
In-Reply-To: <20221223162441.2692988-1-jeremy@azazel.net>
On Fri, Dec 23, 2022 at 04:24:40PM +0000, Jeremy Sowden wrote:
> The BPF for checking the subsystem ID looks for it in the righthand byte of
> `nlh->nlmsg_type`. However, it will only be there on little-endian archi-
> tectures. The result is that on big-endian architectures the subsystem ID
> doesn't match, all packets are immediately accepted, and all filters are
> ignored.
Applied, thanks
prev parent reply other threads:[~2023-01-02 16:19 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-23 16:24 [PATCH libnetfilter_conntrack 1/2] conntrack: fix BPF code for filtering on big-endian architectures Jeremy Sowden
2022-12-23 16:24 ` [PATCH libnetfilter_conntrack 2/2] conntrack: simplify calculation of `struct sock_fprog` length Jeremy Sowden
2023-01-02 16:19 ` Pablo Neira Ayuso
2023-01-02 16:19 ` Pablo Neira Ayuso [this message]
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