From patchwork Wed Apr 22 08:09:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Jubran, Samih" X-Patchwork-Id: 220807 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=-9.9 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, 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 E1A65C55186 for ; Wed, 22 Apr 2020 08:09:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BB9402071E for ; Wed, 22 Apr 2020 08:09:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b="LV5FFqLm" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726503AbgDVIJi (ORCPT ); Wed, 22 Apr 2020 04:09:38 -0400 Received: from smtp-fw-9101.amazon.com ([207.171.184.25]:46933 "EHLO smtp-fw-9101.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726460AbgDVIJf (ORCPT ); Wed, 22 Apr 2020 04:09:35 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1587542975; x=1619078975; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=9dspdJNzaLm7kLaiJFm9YUrpXIHwD0NMdM++Y1nwIbY=; b=LV5FFqLm6lCFS4dc71r125UJN3nphbEPsdm+1P7LYWnNv0jpdje+59es 22xFARAyhpTryXII/AUYHdie1rK5MV4b0JbXdExghWDYNQyIMGx9/nq4P kLAWtB45zbT9X8kB6xZqwaX9+jfMtqB2lyMD1RClnN0KE8BWwsNaV/rQV o=; IronPort-SDR: 16uaN9cN4HhUr8mIetC5qz69BAwHEgN1W34DjmIc6YILK+glC0Zd57rh8QoIiqw3/3tVLG0z+e 3TyeWmFYtjeg== X-IronPort-AV: E=Sophos;i="5.72,412,1580774400"; d="scan'208";a="30370224" Received: from sea32-co-svc-lb4-vlan3.sea.corp.amazon.com (HELO email-inbound-relay-1e-57e1d233.us-east-1.amazon.com) ([10.47.23.38]) by smtp-border-fw-out-9101.sea19.amazon.com with ESMTP; 22 Apr 2020 08:09:33 +0000 Received: from EX13MTAUWB001.ant.amazon.com (iad55-ws-svc-p15-lb9-vlan3.iad.amazon.com [10.40.159.166]) by email-inbound-relay-1e-57e1d233.us-east-1.amazon.com (Postfix) with ESMTPS id 992A314178A; Wed, 22 Apr 2020 08:09:32 +0000 (UTC) Received: from EX13D02UWB002.ant.amazon.com (10.43.161.160) by EX13MTAUWB001.ant.amazon.com (10.43.161.249) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 22 Apr 2020 08:09:32 +0000 Received: from EX13MTAUWB001.ant.amazon.com (10.43.161.207) by EX13D02UWB002.ant.amazon.com (10.43.161.160) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 22 Apr 2020 08:09:31 +0000 Received: from dev-dsk-sameehj-1c-1edacdb5.eu-west-1.amazon.com (172.19.82.3) by mail-relay.amazon.com (10.43.161.249) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 22 Apr 2020 08:09:31 +0000 Received: by dev-dsk-sameehj-1c-1edacdb5.eu-west-1.amazon.com (Postfix, from userid 9775579) id 5A84881CEE; Wed, 22 Apr 2020 08:09:31 +0000 (UTC) From: To: , CC: Arthur Kiyanovski , , , , , , , , , , , , , Subject: [PATCH V1 net 02/13] net: ena: avoid unnecessary admin command when RSS function set fails Date: Wed, 22 Apr 2020 08:09:12 +0000 Message-ID: <20200422080923.6697-3-sameehj@amazon.com> X-Mailer: git-send-email 2.24.1.AMZN In-Reply-To: <20200422080923.6697-1-sameehj@amazon.com> References: <20200422080923.6697-1-sameehj@amazon.com> MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Arthur Kiyanovski Currently when ena_set_hash_function() fails the hash function is restored to the previous value by calling an admin command to get the hash function from the device. In this commit we avoid the admin command, by saving the previous hash function before calling ena_set_hash_function() and using this previous value to restore the hash function in case of failure of ena_set_hash_function(). Signed-off-by: Sameeh Jubran Signed-off-by: Arthur Kiyanovski --- drivers/net/ethernet/amazon/ena/ena_com.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/amazon/ena/ena_com.c b/drivers/net/ethernet/amazon/ena/ena_com.c index 07b0f396d3c2..66edc86c41c9 100644 --- a/drivers/net/ethernet/amazon/ena/ena_com.c +++ b/drivers/net/ethernet/amazon/ena/ena_com.c @@ -2286,6 +2286,7 @@ int ena_com_fill_hash_function(struct ena_com_dev *ena_dev, struct ena_admin_get_feat_resp get_resp; struct ena_admin_feature_rss_flow_hash_control *hash_key = rss->hash_key; + enum ena_admin_hash_functions old_func; int rc; /* Make sure size is a mult of DWs */ @@ -2325,12 +2326,13 @@ int ena_com_fill_hash_function(struct ena_com_dev *ena_dev, return -EINVAL; } + old_func = rss->hash_func; rss->hash_func = func; rc = ena_com_set_hash_function(ena_dev); /* Restore the old function */ if (unlikely(rc)) - ena_com_get_hash_function(ena_dev, NULL, NULL); + rss->hash_func = old_func; return rc; }