From patchwork Tue Jan 10 04:52:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Mogilappagari, Sudheer" X-Patchwork-Id: 13094662 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 1F0BDC54EBE for ; Tue, 10 Jan 2023 04:59:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229605AbjAJE7L (ORCPT ); Mon, 9 Jan 2023 23:59:11 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42086 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229526AbjAJE7J (ORCPT ); Mon, 9 Jan 2023 23:59:09 -0500 Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ECB6940867 for ; Mon, 9 Jan 2023 20:59:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1673326747; x=1704862747; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=iMgtZo0QRsYT+FGkYCYH43au4jQZcZ/jhD8CvdYbCPY=; b=XQHxy7jqby7K36mzgcV0vrMFC+158nKRDHZLdB28MIEy+DTZ00iBeiQT AudotsWzF6NVEVTSJnLod1Q1IL1yAjKIo0JVIJ5qncubz81Ucwbvh1Khy 2iymrAV8cBBhzGzK1cbmQPzLNQKczdTRpfUhiCbUWJaXd0cQdplh1zegD kTTkvmNoeOVBziUOWazkBC7qkQyfqA8kHGSwRo8tdk+EI+kXwzlVCHHOJ avsJugvWRwoCZriTlQ7qwoJJNGoW/MFMucIXvO4fyVy7GerI/yHzzTVEY GGdhKlEM2wJW8wAmYzfKaA0+q0P87Usg+wLWokhWwdnRvaqD4fzoVXXpw w==; X-IronPort-AV: E=McAfee;i="6500,9779,10585"; a="306574980" X-IronPort-AV: E=Sophos;i="5.96,314,1665471600"; d="scan'208";a="306574980" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Jan 2023 20:59:07 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10585"; a="985636150" X-IronPort-AV: E=Sophos;i="5.96,314,1665471600"; d="scan'208";a="985636150" Received: from msu-dell.jf.intel.com ([10.166.233.5]) by fmsmga005.fm.intel.com with ESMTP; 09 Jan 2023 20:59:06 -0800 From: Sudheer Mogilappagari To: netdev@vger.kernel.org Cc: kuba@kernel.org, mkubecek@suse.cz, andrew@lunn.ch, sridhar.samudrala@intel.com, anthony.l.nguyen@intel.com Subject: [PATCH ethtool-next v5 0/2] add netlink support for rss get Date: Mon, 9 Jan 2023 20:52:43 -0800 Message-Id: <20230110045245.3571556-1-sudheer.mogilappagari@intel.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: mkubecek+ethtool@suse.cz These patches add netlink based handler to fetch RSS information using "ethtool -x [context %d]" command. Output without --json option $ethtool -x eno2 RX flow hash indirection table for eno2 with 8 RX ring(s): 0: 0 0 0 0 0 0 0 0 8: 1 1 1 1 1 1 1 1 ...skip similar lines... 120: 7 7 7 7 7 7 7 7 RSS hash key: be:c3:13:a6:59:9a:c3:c5:d8:60:75:2b:4c:b2:12:cc:5c:4e:34: 8a:f9:ab:16:c7:19:5d:ab:1d:b5:c1:c7:57:c7:a2:e1:2b:e3:ea: 02:60:88:8e:96:ef:2d:64:d2:de:2c:16:72:b6 RSS hash function: toeplitz: on xor: off crc32: off Sample output with json option: $ethtool --json -x eno2 [ { "ifname": "eno2", "rss-indirection-table": [ 0,0,0,0,0,0,0,0,1,1,1,1,1,1,1, ...skip similar lines... 7,7,7,7,7,7,7,7 ], "rss-hash-key": [ 190,195,19,166,..], "rss-hash-function": "toeplitz" } ] Signed-off-by: Sudheer Mogilappagari --- v5: - Fixed use of same socket for fetching rings info and RSS info - Added checks to test if a field exists before accessing reply message - Refactor print functions and avoid use of ethtool_rxfh structure v4: -Fixed hash function values in example output of commit message. v3: -Made hash key as an array of ints. -Skip json field when not supported. -Made hash function values as true/false instead of on/off -Formatted key strings as per review comments. v2: -Added json support --- Sudheer Mogilappagari (2): Move code that print rss info into common file netlink: add netlink handler for get rss (-x) Makefile.am | 2 +- common.c | 36 +++++++ common.h | 6 +- ethtool.c | 43 ++------ netlink/desc-ethtool.c | 11 ++ netlink/extapi.h | 2 + netlink/rss.c | 228 +++++++++++++++++++++++++++++++++++++++++ 7 files changed, 291 insertions(+), 37 deletions(-) create mode 100644 netlink/rss.c