From patchwork Wed May 29 03:16:25 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joe Damato X-Patchwork-Id: 13677726 Received: from mail-pg1-f178.google.com (mail-pg1-f178.google.com [209.85.215.178]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1B95C1391 for ; Wed, 29 May 2024 03:20:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.178 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716952848; cv=none; b=fFXVzzCFCAxISzk5Xiki8dP1HPLa9dV0QFcmZ2jSUuk46GC+xO3nsmyKMLueOQYxEy7Qwfx1E+gxr10d7pgnn0iDZ9TxR0UChG+/rZi4hve1mOXBpKYzCaI2kx6ZPPDsVELqa6WreBr6U26AGfJGMycD9PJEAdkJ7BTx8qumC6k= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716952848; c=relaxed/simple; bh=6VEjzVq5nrmfkHoJWASudCixHFmzlAa4gIuIxJ0VuRY=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=NKKlv+j+YRtmvAGdhaRP0EXR77XglAIrXO5m4pGoVJpXsjyMlmss33Ry3Pm2QKAZCXbYFKvrMzb5hY5V06oCl7p3NcXMFBJbhvEbL+Ad8M9LJbYhfIaAL4xfZ4EugRj1XdfJodXMRraNaihw90iRKdG85B4UjXsFZLph4XbCy/4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=fastly.com; spf=pass smtp.mailfrom=fastly.com; dkim=pass (1024-bit key) header.d=fastly.com header.i=@fastly.com header.b=COijAqrr; arc=none smtp.client-ip=209.85.215.178 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=fastly.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=fastly.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=fastly.com header.i=@fastly.com header.b="COijAqrr" Received: by mail-pg1-f178.google.com with SMTP id 41be03b00d2f7-681a48efe77so1262650a12.2 for ; Tue, 28 May 2024 20:20:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fastly.com; s=google; t=1716952846; x=1717557646; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=BS6iHbBIsatoVGzFhXDQJ9Pi9ja6uQG7muHBmiB17xY=; b=COijAqrrIcoNb4M1HsEvUJGvG/G3QCs7XHuVp2LCAzlcJcYSIUUwILLfonMZCMkTHr dTzdYJqkYoSuTRt/erXDzmuU8sKlXScMQzd4MyWaf39OAHY17umA2QvoB15/PTgNfyQ2 9mZnILDjobV6PNW33GDACWZ9ExLFUrJKPNvLk= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716952846; x=1717557646; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=BS6iHbBIsatoVGzFhXDQJ9Pi9ja6uQG7muHBmiB17xY=; b=lVAA5eambPG9/BWQI56ab5gA9N9nEF5FbvpsyQY74v2raCM7AGHBdLZnpvla6WBVqc Yy6x5FhL94HEuEXDWL93y+KVvCRmpEuxMtQBXaNtpay4UJ6ThjNHTGbek1MsjcXzUfym H6iBSpdZa2UnQ/jyqEbXAc01D1OPvtYt4KvjuIz7V01fnsq6P+S9igqXTW+YLi0fjOmw 3SjPxYzORYnQ0jzV+8yCz+C0vWgBiOZ6nMa6A+ICNvNEjkR6hLL2oSO406p0tybTAm0u 1FVL8CNcFFLBcS5/UiFhiY0Sg9KnG2qk28IlpnLumV8cBMBggcrcTWVCxmGpEQVk5GA3 3H+w== X-Forwarded-Encrypted: i=1; AJvYcCUbs5WvQ/foFh4jfpJ5fF2tFWU+QPDNvOXHJggNd55c8zwFIHU2myxb6DFEPt7aqb6LJg5tQxnsOb67dCIdFfy4K12RXQrdzoMxVg== X-Gm-Message-State: AOJu0Yw4KSTlUazlQIGeer658jqarrWZ21IJGt7kc1zbOhOBJrM7Gnc1 dolersFpTf4rJ0J7uDheZK4L2GDfDB/deUtfVwfaAfcIGrQBa4QcUb2eOFLPNlI= X-Google-Smtp-Source: AGHT+IHK0odMwl88fs80oLL00dG99YZ4irO3GqOx026WsTxm2kQRal9aBjH+zm0v6XLilUzBDoueLA== X-Received: by 2002:a05:6a20:dd82:b0:1a7:5e8f:8707 with SMTP id adf61e73a8af0-1b212d46534mr13913852637.26.1716952846230; Tue, 28 May 2024 20:20:46 -0700 (PDT) Received: from localhost.localdomain ([2620:11a:c019:0:65e:3115:2f58:c5fd]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-6f8fbd3ea03sm7156766b3a.39.2024.05.28.20.20.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 May 2024 20:20:45 -0700 (PDT) From: Joe Damato To: linux-kernel@vger.kernel.org, netdev@vger.kernel.org Cc: nalramli@fastly.com, Joe Damato , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Leon Romanovsky , linux-rdma@vger.kernel.org (open list:MELLANOX MLX5 core VPI driver), Paolo Abeni , Richard Cochran , Saeed Mahameed , Tariq Toukan Subject: [RFC net-next v3 0/2] mlx5: Add netdev-genl queue stats Date: Wed, 29 May 2024 03:16:25 +0000 Message-Id: <20240529031628.324117-1-jdamato@fastly.com> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Greetings: Switching to an RFC instead of a PATCH because even though Tariq patiently explained the code to me, I'm sure I probably still missed something ;) If this turns out to be right and Tariq agrees, I can send a PATCH net-next v4. This change adds support for the per queue netdev-genl API to mlx5, which seems to output stats: ./cli.py --spec ../../../Documentation/netlink/specs/netdev.yaml \ --dump qstats-get --json '{"scope": "queue"}' ...snip {'ifindex': 7, 'queue-id': 28, 'queue-type': 'tx', 'tx-bytes': 399462, 'tx-packets': 3311}, ...snip I've used the suggested tooling to verify the per queue stats match rtnl by doing this: NETIF=eth0 tools/testing/selftests/drivers/net/stats.py I've tested the following scenarios: - The machine at boot (default queue configuration) - Adjusting the queue configuration to various amounts via ethtool - Add mqprio TCs - Removing the mqprio TCs and in each scenario the stats script above reports that the stats match rtnl. Worth noting that Tariq suggested I also export HTB/QOS stats in mlx5e_get_base_stats. I am open to doing this, but I think if I were to do that, HTB/QOS queue stats should also be exported by rtnl so that the script above will continue to show that the output is correct. I'd like to propose: adding HTB/QOS to both rtnl *and* the netdev-genl code together at the same time, but a later time, separate from this change. Thanks, Joe v2 -> rfcv3: - Added patch 1/2 which creates some helpers for computing the txq_ix and ch_ix/tc_ix. - Patch 2/2 modified in several ways: - Fixed variable declarations in mlx5e_get_queue_stats_rx to be at the start of the function. - mlx5e_get_queue_stats_tx rewritten to access sq stats directly by using the helpers added in the previous patch. - mlx5e_get_base_stats modified in several ways: - Took the state_lock when accessing priv->channels. - For the base RX stats, code was simplified to call mlx5e_get_queue_stats_rx instead of repeating the same code. - For the base TX stats, I attempted to implement what I think Tariq suggested in the previous thread: - for available channels, only unavailable TC stats are summed - for unavailable channels, all stats for TCs up to max_opened_tc are summed. v1 - > v2: - Essentially a full rewrite after comments from Jakub, Tariq, and Zhu. Joe Damato (2): net/mlx5e: Add helpers to calculate txq and ch idx net/mlx5e: Add per queue netdev-genl stats .../net/ethernet/mellanox/mlx5/core/en_main.c | 150 +++++++++++++++++- 1 file changed, 149 insertions(+), 1 deletion(-)