From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D5905292B2E; Thu, 18 Jun 2026 16:58:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781801898; cv=none; b=EDfZy7yUIpl+CovYbBrVGDPtjmOuEryp34bj7dsq86jbXteMCzRc5j8IdV5OZjhvKfsx2dfFyAC0t6egmqEXoZex4NUVJdtU3UaE9WH23IbaL+BjngdNJC7DJ8LKm4u2H4CuAvom/4WRRJAdcZYxQKY0BVQ44E9SDSfTwAZ2f4o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781801898; c=relaxed/simple; bh=+vRNg/vB88tsr9ajwBBbvFTItz8uF6l4IN0qGYGdBFY=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=KRH9OQiQZxgeQ2/8C+P5T8Qb1NlUtMbIuoZIdjDLJCZpV+R9yfHcxtwD+8ivoTZARFYZ6MqAJwGEEhS5amPhWdvg1vJsCO11sL4HXca13DUhViWhvoKBPULoRaDdQQps/q3h/Vg+DEpKnQKkES3zwDfw1pXOBCxMwYtbX/stviY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=SLRuora7; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="SLRuora7" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 808E81F000E9; Thu, 18 Jun 2026 16:58:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1781801897; bh=3lit7TWbOMU4PURJ2KRg50uobsepI1W7z4i2B/762E4=; h=From:Subject:Date:To:Cc; b=SLRuora7TAZ30bBG8cSExrGqfNcA980yYwsSY0g9+HLTrYA9n4jThiaMoNULiRLtC g9KDPlJQ7C2QN/E2PMSMXT1a4WT1Xu8ruGdJ8YGZYJD/UETGBVAxxXjapHZdh4UBoM noVzJiPj37RVbDDGxqr+thEj7eCaArhpSN5YYbe2GsXrm/iI74eET76TEzzEPwC2bx rcM+G+YREMPRuikam8YUHdjmY1k+2uKkRFPXl/unqNAI0d3fKfFXyLhgNJ2dieRSCt 3FpYI16Hnbr2NJtdIt8e6O4a3KdOtxCfacJXb7BoQLOSX/h/y+WmPMYLw6qnTdRmv3 MHiJ+8l3YXynw== From: Jeff Layton Subject: [PATCH v5 0/6] nfsd/sunrpc: convert nfsstat server-side interfaces to use netlink Date: Thu, 18 Jun 2026 12:57:54 -0400 Message-Id: <20260618-exportd-netlink-v5-0-e9aef947af3d@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAAAAAAAC/3XPQQ6CMBAF0KuQrq2ZdpgGXHkP46LQQRtJIYUQD OHuVjdq0OX/ybyfWcTA0fMgDtkiIk9+8F1IgXaZqK82XFh6l7LQoA2gMpLnvoujk4HH1oebVHX ZVKQJDaNIV33kxs8v8XRO+eqHsYv318Cknu1/a1ISpFGaXG10VRIdbxwDt/suXsQTm/QbSJtbQ CcgBwBs2OUE9QbAN2Cg3AKYAGuJoLBUVcptgPwD+PVCngBAArLMWBT4Bazr+gAbnqmtcgEAAA= = X-Change-ID: 20260316-exportd-netlink-1c9fb52536e3 To: NeilBrown , Olga Kornievskaia , Dai Ngo , Tom Talpey , Chuck Lever Cc: Trond Myklebust , Anna Schumaker , Steve Dickson , linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org, Jeff Layton X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=3175; i=jlayton@kernel.org; h=from:subject:message-id; bh=+vRNg/vB88tsr9ajwBBbvFTItz8uF6l4IN0qGYGdBFY=; b=owEBbQKS/ZANAwAKAQAOaEEZVoIVAcsmYgBqNCOfT94gUhQYFmnzKEXokuSJQCbfwcvArPY0B ucWxrOfSH+JAjMEAAEKAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCajQjnwAKCRAADmhBGVaC FXcbD/sHHwCsCAodk/L/HfLOC0SRvYomeo5Z5EKlg401g5vwujA4wygthKlr40rbVJe8nMyZX1X ImzbDtMMQGOZht9jBGHx32qI602Y92A4OftO5CBC3vEnYFpdcNF0IAG7kTCRk7wuPrgTUYiScLy vHqr/GUZbyRjp+VZc45M/kxSRmChzLFPP3HQwM4Vq0TJgKDuvSJvAheEEFUy/yLVXTyp+Sd9Bsp lgqOoD30aHp5s02X2UNvRGFIhCgw6KX6N1EVSql9zKaWLSpXudITUUUpX2XY6hmJ/r6yDq7xgkx 4psMarre3yixfesaxZfnt1erKAyMuNWXIEHRrTLvVOBsfseoSMpAj3pWwzjz/Wsj9DOSJ8V+GjO Oy4RNBH1D+oigNyumkvlqK1QOLu/DzGwdpiZAaY6CFo4IJdAhjEkaxFr2f69XMukN2nZ4BQaohu cgtfVSsX/y4vASv0X80jAzugrLNszQoTo4qJXmim7LASAWK8AIVfyQlTXPAvjy7OBcdnD19KJk7 Cp08cGbbbNbfgs/Qz7fsc2ObpJXuapOw5AfmLpxPEyP7Klic4ONRLtd4jKUxPdrJ9kYPmOFHQ2X vaOz9LczAA/m1H7s1JrbjxHgXXzRRtmeWLpad1zjo0A49VYc2oeC+JdbnldUkdH2WE2Eo9EXh9S O4M8O6oobdp92aA== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 The main difference in this version is the addition of server callback operation counts. I'll be sending another nfs-utils patch to add support for displaying those in nfsstat. The nfsstat tool currently scrapes /proc/net/rpc/nfsd for server statistics. This procfs interface has several limitations: the counters are global (not network-namespace-aware), the format is fragile to parse, and it cannot be extended without breaking existing parsers. This series adds per-network-namespace procedure call counts to the sunrpc layer and exposes them through a new netlink handler in the nfsd generic netlink family, allowing nfsstat to retrieve server statistics via netlink with a procfs fallback for older kernels. The nfs-utils patch for that part is already merged. Additionally, this version adds tracking of callback operation counts. Signed-off-by: Jeff Layton --- Changes in v5: - Add NFSv4 callback call counts to nfsstat upcall - Link to v4: https://lore.kernel.org/r/20260616-exportd-netlink-v4-0-03505aee3883@kernel.org Changes in v4: - Ensure error is returned when nla_put_*() calls fail - Link to v3: https://lore.kernel.org/r/20260609-exportd-netlink-v3-0-aa5508a5bb1d@kernel.org Changes in v3: - Only increment per-net stats for the "primary" program - Link to v2: https://lore.kernel.org/r/20260525-exportd-netlink-v2-0-40003fed450c@kernel.org --- Jeff Layton (6): sunrpc: add per-netns per-procedure call counts to svc_stat sunrpc: use per-net counts in svc_seq_show() nfsd: implement server-stats-get netlink handler sunrpc: remove unused svc_version vs_count field nfsd: count NFSv4 callback operations per netns nfsd: export NFSv4 callback op stats via netlink Documentation/netlink/specs/nfsd.yaml | 111 +++++++++++++++ fs/lockd/svc4proc.c | 4 - fs/lockd/svcproc.c | 7 - fs/nfs/callback_xdr.c | 6 - fs/nfsd/localio.c | 3 - fs/nfsd/netlink.c | 5 + fs/nfsd/netlink.h | 2 + fs/nfsd/netns.h | 12 +- fs/nfsd/nfs2acl.c | 3 - fs/nfsd/nfs3acl.c | 3 - fs/nfsd/nfs3proc.c | 3 - fs/nfsd/nfs4callback.c | 7 +- fs/nfsd/nfs4proc.c | 3 - fs/nfsd/nfs4state.c | 2 - fs/nfsd/nfsctl.c | 250 +++++++++++++++++++++++++++++++++- fs/nfsd/nfsproc.c | 3 - fs/nfsd/stats.c | 2 +- fs/nfsd/stats.h | 5 +- include/linux/sunrpc/stats.h | 6 + include/linux/sunrpc/svc.h | 1 - include/uapi/linux/nfsd_netlink.h | 36 +++++ net/sunrpc/stats.c | 2 +- net/sunrpc/svc.c | 63 ++++++++- 23 files changed, 492 insertions(+), 47 deletions(-) --- base-commit: 6f90c7618528b5ca5887f8c6057f26dcc7a27a99 change-id: 20260316-exportd-netlink-1c9fb52536e3 Best regards, -- Jeff Layton