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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D159CC3B1BF for ; Fri, 14 Feb 2020 23:22:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A7B5A2081E for ; Fri, 14 Feb 2020 23:22:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728229AbgBNXWh (ORCPT ); Fri, 14 Feb 2020 18:22:37 -0500 Received: from mga11.intel.com ([192.55.52.93]:12666 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728240AbgBNXWb (ORCPT ); Fri, 14 Feb 2020 18:22:31 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 14 Feb 2020 15:22:29 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,442,1574150400"; d="scan'208";a="228629347" Received: from jekeller-desk.amr.corp.intel.com (HELO jekeller-desk.jekeller.internal) ([10.166.244.172]) by fmsmga008.fm.intel.com with ESMTP; 14 Feb 2020 15:22:29 -0800 From: Jacob Keller To: netdev@vger.kernel.org Cc: jiri@resnulli.us, valex@mellanox.com, linyunsheng@huawei.com, lihong.yang@intel.com, kuba@kernel.org, Jacob Keller Subject: [RFC PATCH v2 2/2] devlink: stop requiring snapshot for regions Date: Fri, 14 Feb 2020 15:22:23 -0800 Message-Id: <20200214232223.3442651-25-jacob.e.keller@intel.com> X-Mailer: git-send-email 2.25.0.368.g28a2d05eebfb In-Reply-To: <20200214232223.3442651-1-jacob.e.keller@intel.com> References: <20200214232223.3442651-1-jacob.e.keller@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The region dump and region read commands currently require the snapshot to work. Recent changes to the kernel have enabled optionally supporting direct read of a region's contents without a snapshot id. Enable this by allowing the read and dump commands to execute without a snapshot id. On older kernels, this will return -EINVAL as the kernel will reject such a command. On newer kernels, this will directly read the region contents without taking a snapshot. If a region does not support direct read, it will return -EOPNOTSUPP. Signed-off-by: Jacob Keller --- devlink/devlink.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/devlink/devlink.c b/devlink/devlink.c index 71c300ba16ed..f98f2dc034ea 100644 --- a/devlink/devlink.c +++ b/devlink/devlink.c @@ -6312,8 +6312,8 @@ static int cmd_region_dump(struct dl *dl) nlh = mnlg_msg_prepare(dl->nlg, DEVLINK_CMD_REGION_READ, NLM_F_REQUEST | NLM_F_ACK | NLM_F_DUMP); - err = dl_argv_parse_put(nlh, dl, DL_OPT_HANDLE_REGION | - DL_OPT_REGION_SNAPSHOT_ID, 0); + err = dl_argv_parse_put(nlh, dl, DL_OPT_HANDLE_REGION, + DL_OPT_REGION_SNAPSHOT_ID); if (err) return err; @@ -6334,8 +6334,8 @@ static int cmd_region_read(struct dl *dl) NLM_F_REQUEST | NLM_F_ACK | NLM_F_DUMP); err = dl_argv_parse_put(nlh, dl, DL_OPT_HANDLE_REGION | - DL_OPT_REGION_ADDRESS | DL_OPT_REGION_LENGTH | - DL_OPT_REGION_SNAPSHOT_ID, 0); + DL_OPT_REGION_ADDRESS | DL_OPT_REGION_LENGTH, + DL_OPT_REGION_SNAPSHOT_ID); if (err) return err; -- 2.25.0.368.g28a2d05eebfb