From: Gabriel Krisman Bertazi <krisman@suse.de>
To: Breno Leitao <leitao@debian.org>
Cc: sdf@google.com, axboe@kernel.dk, asml.silence@gmail.com,
willemdebruijn.kernel@gmail.com, martin.lau@linux.dev,
bpf@vger.kernel.org, linux-kernel@vger.kernel.org,
netdev@vger.kernel.org, io-uring@vger.kernel.org,
kuba@kernel.org, pabeni@redhat.com
Subject: Re: [PATCH v4 08/10] io_uring/cmd: Introduce SOCKET_URING_OP_GETSOCKOPT
Date: Tue, 05 Sep 2023 08:24:25 -0400 [thread overview]
Message-ID: <87a5u0byfa.fsf@suse.de> (raw)
In-Reply-To: <20230904162504.1356068-9-leitao@debian.org> (Breno Leitao's message of "Mon, 4 Sep 2023 09:25:01 -0700")
Breno Leitao <leitao@debian.org> writes:
> Add support for getsockopt command (SOCKET_URING_OP_GETSOCKOPT), where
> level is SOL_SOCKET. This is leveraging the sockptr_t infrastructure,
> where a sockptr_t is either userspace or kernel space, and handled as
> such.
>
> Differently from the getsockopt(2), the optlen field is not a userspace
> pointers. In getsockopt(2), userspace provides optlen pointer, which is
> overwritten by the kernel. In this implementation, userspace passes a
> u32, and the new value is returned in cqe->res. I.e., optlen is not a
> pointer.
>
> Important to say that userspace needs to keep the pointer alive until
> the CQE is completed.
>
> Signed-off-by: Breno Leitao <leitao@debian.org>
IMO, this looks much cleaner with most of the bpf and socket logic under
net/.
Reviewed-by: Gabriel Krisman Bertazi <krisman@suse.de>
Thanks!
--
Gabriel Krisman Bertazi
next prev parent reply other threads:[~2023-09-05 16:33 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-04 16:24 [PATCH v4 00/10] io_uring: Initial support for {s,g}etsockopt commands Breno Leitao
2023-09-04 16:24 ` [PATCH v4 01/10] bpf: Leverage sockptr_t in BPF getsockopt hook Breno Leitao
2023-09-04 16:24 ` [PATCH v4 02/10] bpf: Leverage sockptr_t in BPF setsockopt hook Breno Leitao
2023-09-04 16:24 ` [PATCH v4 03/10] net/socket: Break down __sys_setsockopt Breno Leitao
2023-09-04 16:24 ` [PATCH v4 04/10] net/socket: Break down __sys_getsockopt Breno Leitao
2023-09-05 9:36 ` David Laight
2023-09-05 10:29 ` Andy Shevchenko
2023-09-04 16:24 ` [PATCH v4 05/10] io_uring/cmd: Pass compat mode in issue_flags Breno Leitao
2023-09-04 16:24 ` [PATCH v4 06/10] selftests/net: Extract uring helpers to be reusable Breno Leitao
2023-09-04 16:25 ` [PATCH v4 07/10] io_uring/cmd: return -EOPNOTSUPP if net is disabled Breno Leitao
2023-09-05 12:32 ` Gabriel Krisman Bertazi
2023-09-08 17:04 ` Breno Leitao
2023-09-04 16:25 ` [PATCH v4 08/10] io_uring/cmd: Introduce SOCKET_URING_OP_GETSOCKOPT Breno Leitao
2023-09-05 12:24 ` Gabriel Krisman Bertazi [this message]
2023-09-04 16:25 ` [PATCH v4 09/10] io_uring/cmd: Introduce SOCKET_URING_OP_SETSOCKOPT Breno Leitao
2023-09-05 12:24 ` Gabriel Krisman Bertazi
2023-09-04 16:25 ` [PATCH v4 10/10] selftests/bpf/sockopt: Add io_uring support Breno Leitao
2023-09-05 22:49 ` [PATCH v4 00/10] io_uring: Initial support for {s,g}etsockopt commands Jakub Kicinski
2023-09-08 16:55 ` Breno Leitao
2023-10-06 15:45 ` Breno Leitao
2023-10-09 10:11 ` Willem de Bruijn
2023-10-09 13:28 ` Breno Leitao
2023-10-09 16:55 ` Jakub Kicinski
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