From: Matthieu Baerts <matttbe@kernel.org>
To: "Asbjørn Sloth Tønnesen" <ast@fiberby.net>,
"Mat Martineau" <martineau@kernel.org>
Cc: Geliang Tang <geliang@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Donald Hunter <donald.hunter@gmail.com>,
Davide Caratti <dcaratti@redhat.com>,
netdev@vger.kernel.org, mptcp@lists.linux.dev,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH net] netlink: specs: mptcp: fix port endianness
Date: Wed, 11 Sep 2024 17:07:35 +0200 [thread overview]
Message-ID: <5b013e5c-7598-4b84-a60f-a3f58f70afaa@kernel.org> (raw)
In-Reply-To: <20240911091003.1112179-1-ast@fiberby.net>
Hi Asbjørn,
On 11/09/2024 11:10, Asbjørn Sloth Tønnesen wrote:
> The MPTCP port attribute is in host endianness, but was documented
> as big-endian in the ynl specification.
>
> Below are two examples from net/mptcp/pm_netlink.c showing that the
> attribute is converted to/from host endianness for use with netlink.
>
> Import from netlink:
> addr->port = htons(nla_get_u16(tb[MPTCP_PM_ADDR_ATTR_PORT]))
>
> Export to netlink:
> nla_put_u16(skb, MPTCP_PM_ADDR_ATTR_PORT, ntohs(addr->port))
>
> Where addr->port is defined as __be16.
>
> No functional change intended.
Good catch. Indeed, this port attribute is supposed to be in host
endianness.
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
This patch can be applied in netdev directly.
Cheers,
Matt
--
Sponsored by the NGI0 Core fund.
next prev parent reply other threads:[~2024-09-11 15:07 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-11 9:10 [PATCH net] netlink: specs: mptcp: fix port endianness Asbjørn Sloth Tønnesen
2024-09-11 10:04 ` MPTCP CI
2024-09-11 12:42 ` Davide Caratti
2024-09-11 15:07 ` Matthieu Baerts [this message]
2024-09-12 3:50 ` patchwork-bot+netdevbpf
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