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Date: Mon, 25 May 2026 13:30:28 -0700
From: Jakub Kicinski <kuba@kernel.org>
To: Christopher Lusk <clusk@northecho.dev>
Cc: John Fastabend <john.fastabend@gmail.com>, Sabrina Dubroca
 <sd@queasysnail.net>, "David S. Miller" <davem@davemloft.net>, Eric Dumazet
 <edumazet@google.com>, Paolo Abeni <pabeni@redhat.com>, Simon Horman
 <horms@kernel.org>, Shuah Khan <shuah@kernel.org>, Alexei Starovoitov
 <ast@kernel.org>, Daniel Borkmann <daniel@iogearbox.net>,
 netdev@vger.kernel.org, bpf@vger.kernel.org,
 linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org,
 stable@vger.kernel.org
Subject: Re: [PATCH net v2 1/2] net: tls: preserve split open record on
 async encrypt
Message-ID: <20260525133028.58494274@kernel.org>
In-Reply-To: <20260521025840.976378-2-clusk@northecho.dev>
References: <20260521025840.976378-1-clusk@northecho.dev>
	<20260521025840.976378-2-clusk@northecho.dev>
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On Wed, 20 May 2026 22:58:39 -0400 Christopher Lusk wrote:
> When the BPF sk_msg verdict sets apply_bytes smaller than the current
> open record, tls_push_record() splits ctx->open_rec into the record
> being encrypted and a remainder record. The synchronous path reattaches
> the remainder to ctx->open_rec before continuing.

The current understanding is that this code has no real users.
So let's try clear async_capable if BPF is attached and avoid
all these bugs in record handling, please? The savings from
zero copy are negligible.