From: Breno Leitao <leitao@debian.org>
To: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>,
Paolo Abeni <pabeni@redhat.com>, Simon Horman <horms@kernel.org>,
Shuah Khan <shuah@kernel.org>,
sdf.kernel@gmail.com, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org,
kernel-team@meta.com
Subject: Re: [PATCH net-next 2/2] udp: convert udp_lib_getsockopt to sockopt_t
Date: Fri, 12 Jun 2026 09:28:42 -0700 [thread overview]
Message-ID: <aiwyvEbSHLHKNXBk@gmail.com> (raw)
In-Reply-To: <willemdebruijn.kernel.26a37316bb5e2@gmail.com>
Hello Willem,
On Fri, Jun 12, 2026 at 10:58:19AM -0400, Willem de Bruijn wrote:
> Breno Leitao wrote:
> > In preparation for converting the proto-layer getsockopt callbacks to the
> > sockopt_t interface, switch udp_lib_getsockopt() to take a sockopt_t.
>
> What is the benefit of this conversion?
This enables kernel callers (io_uring, bpf, etc.) to invoke getsockopt
directly. The setsockopt() conversion previously used sockptr, but
Linus objected to that approach and suggested iov_iter instead.
For full context, see:
https://lore.kernel.org/all/20260408-getsockopt-v3-0-061bb9cb355d@debian.org/
> It does add a lot more complexity and makes the code less obvious.
I agree this adds complexity. Unfortunately, I don't see a simpler way
to enable getsockopt to work with non-__user addresses.
prev parent reply other threads:[~2026-06-12 16:29 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-12 11:45 [PATCH net-next 0/2] net: convert UDP getsockopt to sockopt_t Breno Leitao
2026-06-12 11:45 ` [PATCH net-next 1/2] net: add sockopt_init_user() for getsockopt conversion Breno Leitao
2026-06-12 11:45 ` [PATCH net-next 2/2] udp: convert udp_lib_getsockopt to sockopt_t Breno Leitao
2026-06-12 14:58 ` Willem de Bruijn
2026-06-12 16:28 ` Breno Leitao [this message]
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