From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BE6E4C4332F for ; Sat, 11 Nov 2023 19:52:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229379AbjKKTwt (ORCPT ); Sat, 11 Nov 2023 14:52:49 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49150 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229436AbjKKTwt (ORCPT ); Sat, 11 Nov 2023 14:52:49 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3371A385F for ; Sat, 11 Nov 2023 11:52:46 -0800 (PST) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 302B5C433C7; Sat, 11 Nov 2023 19:52:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1699732365; bh=eACPki2xnV1G/w/ywqIChyHFBBMNvuOusOQYRUq31sE=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=rc6fuU7LtI6RyNivInE+RLhxoLAh5WYUBvNqqcvt7PITije1XMUegrmfMzD4hOPow T+KgPi/175c0PgvG5m6tddscmbdxANfZzjav4CvMOkOM7rs2CyE6hfRK+IuAL2AfEJ RfgwCm9P2S9K4kOI5sKugWYCwhrqptV2QQxqVLz9XTtExMbAwCJ8jAseXGDU//4ZiA JORjUjdJ7L5Z9qgTlvI+CkzRn7IrKf5+QsXe4AESMXGjvZWBo2MUKZLSqio0+T/Hci YEVCpn19b0n8q7Jy64Yw/9OzVQpTgTGG0tMSDjGaDefeu1CqD4EbBblP7ELrOr067A Nq//g/KRV5OEg== Message-ID: <7fdd6dd0d8ab75181eb350f78a4822a039cacaa5.camel@kernel.org> Subject: Re: [PATCH v4 0/3] convert write_threads, write_version and write_ports to netlink commands From: Jeff Layton To: Lorenzo Bianconi , linux-nfs@vger.kernel.org Cc: lorenzo.bianconi@redhat.com, neilb@suse.de, chuck.lever@oracle.com, netdev@vger.kernel.org, kuba@kernel.org Date: Sat, 11 Nov 2023 14:52:43 -0500 In-Reply-To: References: Autocrypt: addr=jlayton@kernel.org; prefer-encrypt=mutual; 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kZWuOsJdJQdmwlWC5L5ln9xgfr/4mOY38B0U= Content-Type: text/plain; charset="ISO-8859-15" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.50.1 (3.50.1-1.fc39) MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org On Sat, 2023-11-04 at 12:13 +0100, Lorenzo Bianconi wrote: > Introduce write_threads, write_version and write_ports netlink > commands similar to the ones available through the procfs. >=20 > Changes since v3: > - drop write_maxconn and write_maxblksize for the moment > - add write_version and write_ports commands > Changes since v2: > - use u32 to store nthreads in nfsd_nl_threads_set_doit > - rename server-attr in control-plane in nfsd.yaml specs > Changes since v1: > - remove write_v4_end_grace command > - add write_maxblksize and write_maxconn netlink commands >=20 > This patch can be tested with user-space tool reported below: > https://github.com/LorenzoBianconi/nfsd-netlink.git > This series is based on the commit below available in net-next tree >=20 > commit e0fadcffdd172d3a762cb3d0e2e185b8198532d9 > Author: Jakub Kicinski > Date: Fri Oct 6 06:50:32 2023 -0700 >=20 > tools: ynl-gen: handle do ops with no input attrs >=20 > The code supports dumps with no input attributes currently > thru a combination of special-casing and luck. > Clean up the handling of ops with no inputs. Create empty > Structs, and skip printing of empty types. > This makes dos with no inputs work. >=20 > Lorenzo Bianconi (3): > NFSD: convert write_threads to netlink commands > NFSD: convert write_version to netlink commands > NFSD: convert write_ports to netlink commands >=20 > Documentation/netlink/specs/nfsd.yaml | 83 ++++++++ > fs/nfsd/netlink.c | 54 ++++++ > fs/nfsd/netlink.h | 8 + > fs/nfsd/nfsctl.c | 267 +++++++++++++++++++++++++- > include/uapi/linux/nfsd_netlink.h | 30 +++ > tools/net/ynl/generated/nfsd-user.c | 254 ++++++++++++++++++++++++ > tools/net/ynl/generated/nfsd-user.h | 156 +++++++++++++++ > 7 files changed, 845 insertions(+), 7 deletions(-) >=20 Nice work, Lorenzo! Now comes the bikeshedding... With the nfsdfs interface, we sort of had to split things up into multiple files like this, but it has some drawbacks, in particular with weird behavior when people do things out of order. Would it make more sense to instead have a single netlink command that sets up ports and versions, and then spawns the requisite amount of threads, all in one fell swoop? That does presuppose we can send down a variable-length frame though, but I assume that is possible with netlink. --=20 Jeff Layton