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From: Paolo Abeni <pabeni@redhat.com>
To: Alexei Starovoitov <alexei.starovoitov@gmail.com>,
	Geliang Tang <geliang.tang@suse.com>
Cc: Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Andrii Nakryiko <andrii@kernel.org>,
	Martin KaFai Lau <martin.lau@linux.dev>,
	Song Liu <song@kernel.org>, Yonghong Song <yhs@fb.com>,
	John Fastabend <john.fastabend@gmail.com>,
	KP Singh <kpsingh@kernel.org>,
	Stanislav Fomichev <sdf@google.com>, Hao Luo <haoluo@google.com>,
	Jiri Olsa <jolsa@kernel.org>,
	Florent Revest <revest@chromium.org>,
	Brendan Jackman <jackmanb@chromium.org>,
	Matthieu Baerts <matthieu.baerts@tessares.net>,
	Mat Martineau <martineau@kernel.org>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>,
	John Johansen <john.johansen@canonical.com>,
	Paul Moore <paul@paul-moore.com>,
	James Morris <jmorris@namei.org>,
	"Serge E. Hallyn" <serge@hallyn.com>,
	Stephen Smalley <stephen.smalley.work@gmail.com>,
	Eric Paris <eparis@parisplace.org>,
	Mykola Lysenko <mykolal@fb.com>, Shuah Khan <shuah@kernel.org>,
	bpf@vger.kernel.org, netdev@vger.kernel.org,
	mptcp@lists.linux.dev, apparmor@lists.ubuntu.com,
	linux-security-module@vger.kernel.org, selinux@vger.kernel.org,
	linux-kselftest@vger.kernel.org
Subject: Re: [RFC bpf-next v7 0/6] bpf: Force to MPTCP
Date: Wed, 02 Aug 2023 10:03:12 +0200	[thread overview]
Message-ID: <1b51c79c59cb3ec4be95e993be9be2e5d9441670.camel@redhat.com> (raw)
In-Reply-To: <20230801004323.l2npfegkq3srzff3@MacBook-Pro-8.local>

On Mon, 2023-07-31 at 17:43 -0700, Alexei Starovoitov wrote:

> I still think it's a hack, but its blast radius is nicely contained.
> And since I cannot propose any better I'm ok with it.
> 
> Patches 1-2 can be squashed into one.
> Just like patches 3-6 as a single patch for selftests.
> 
> But before proceeding I'd like an explicit ack from netdev maintainers.

Just to state the obvious, I carry my personal bias on this topic due
to my background ;)

My perspective is quite similar to Alexei's one: the solution is not
extremely elegant, but is very self-contained; it looks viable to me.

WRT the specific code, I think the additional checks on the 'protocol'
value after the 'update_socket_protocol()' call should be dropped: the
user space can already provide an arbitrary value there and the later
code deal with that.

Cheers,

Paolo


      parent reply	other threads:[~2023-08-02  8:04 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-07-29  9:57 [RFC bpf-next v7 0/6] bpf: Force to MPTCP Geliang Tang
2023-07-29  9:57 ` [RFC bpf-next v7 1/6] net: socket: add update_socket_protocol hook Geliang Tang
2023-07-29  9:57 ` [RFC bpf-next v7 2/6] bpf: Register mptcp modret set Geliang Tang
2023-07-29  9:57 ` [RFC bpf-next v7 3/6] selftests/bpf: Add mptcpify program Geliang Tang
2023-07-29  9:57 ` [RFC bpf-next v7 4/6] selftests/bpf: use random netns name for mptcp Geliang Tang
2023-07-29  9:57 ` [RFC bpf-next v7 5/6] selftests/bpf: add two mptcp netns helpers Geliang Tang
2023-07-29  9:57 ` [RFC bpf-next v7 6/6] selftests/bpf: Add mptcpify selftest Geliang Tang
2023-08-01  0:43 ` [RFC bpf-next v7 0/6] bpf: Force to MPTCP Alexei Starovoitov
2023-08-02  2:19   ` Geliang Tang
2023-08-02  2:23     ` Alexei Starovoitov
2023-08-03  7:40       ` Matthieu Baerts
2023-08-02  8:03   ` Paolo Abeni [this message]

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