From patchwork Tue Aug 1 01:15:17 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Zulkifli, Muhammad Husaini" X-Patchwork-Id: 13335659 X-Patchwork-Delegate: kuba@kernel.org Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 43FC07E for ; Tue, 1 Aug 2023 01:16:48 +0000 (UTC) Received: from mgamail.intel.com (unknown [134.134.136.65]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B416810F5 for ; Mon, 31 Jul 2023 18:16:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1690852605; x=1722388605; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=iNbzwRMjAEvSzQbxsOi+KU8F2Wyrzf5JNrk8JE3lgeI=; b=W62S17dcPuEhR7ALAW42QSW+m0wPJJLVa+G+dvOa/hp0IN+DBzElIjoj O6AjivOGqWxBH57aszDekuGpa7XB6a4ErwUL4QQr4RtSrNAE8Uw6HPWz5 SMRxMIXFfwK9yauxOmSOdLgT3c5pmN0c2FoZkVn8IbYSzvK7FMJGbJmh6 dby1Krmw0L0dB2vzYEw8/tNCNU0OB4D49XXxI+mGe16QJlC09VunecNem 3ZkQi6jJGDSUHohUvCH7aJToqkKpaKVDgD3l+kRFcKamdPn3E53/9TQz5 NVHR7wuuKJILw3QgV1VmyB+s4O9DKbjNL/OMZaaO9QICbe3yRJ2Fa9prZ A==; X-IronPort-AV: E=McAfee;i="6600,9927,10788"; a="372792726" X-IronPort-AV: E=Sophos;i="6.01,246,1684825200"; d="scan'208";a="372792726" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Jul 2023 18:16:44 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10788"; a="798458559" X-IronPort-AV: E=Sophos;i="6.01,246,1684825200"; d="scan'208";a="798458559" Received: from zulkifl3-ilbpg0.png.intel.com ([10.88.229.82]) by fmsmga004.fm.intel.com with ESMTP; 31 Jul 2023 18:16:42 -0700 From: Muhammad Husaini Zulkifli To: intel-wired-lan@osuosl.org Cc: horms@kernel.org, davem@davemloft.net, kuba@kernel.org, muhammad.husaini.zulkifli@intel.com, pabeni@redhat.com, edumazet@google.com, netdev@vger.kernel.org, naamax.meir@linux.intel.com, anthony.l.nguyen@intel.com Subject: [PATCH iwl-net v3 1/2] igc: Expose tx-usecs coalesce setting to user Date: Tue, 1 Aug 2023 09:15:17 +0800 Message-Id: <20230801011518.25370-2-muhammad.husaini.zulkifli@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230801011518.25370-1-muhammad.husaini.zulkifli@intel.com> References: <20230801011518.25370-1-muhammad.husaini.zulkifli@intel.com> X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_NONE,T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: X-Patchwork-Delegate: kuba@kernel.org When users attempt to obtain the coalesce setting using the ethtool command, current code always returns 0 for tx-usecs. This is because I225/6 always uses a queue pair setting, hence tx_coalesce_usecs does not return a value during the igc_ethtool_get_coalesce() callback process. The pair queue condition checking in igc_ethtool_get_coalesce() is removed by this patch so that the user gets information of the value of tx-usecs. Even if i225/6 is using queue pair setting, there is no harm in notifying the user of the tx-usecs. The implementation of the current code may have previously been a copy of the legacy code i210. How to test: User can get the coalesce value using ethtool command. Example command: Get: ethtool -c Previous output: rx-usecs: 3 rx-frames: n/a rx-usecs-irq: n/a rx-frames-irq: n/a tx-usecs: 0 tx-frames: n/a tx-usecs-irq: n/a tx-frames-irq: n/a New output: rx-usecs: 3 rx-frames: n/a rx-usecs-irq: n/a rx-frames-irq: n/a tx-usecs: 3 tx-frames: n/a tx-usecs-irq: n/a tx-frames-irq: n/a Fixes: 8c5ad0dae93c ("igc: Add ethtool support") Signed-off-by: Muhammad Husaini Zulkifli Tested-by: Naama Meir --- drivers/net/ethernet/intel/igc/igc_ethtool.c | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/intel/igc/igc_ethtool.c b/drivers/net/ethernet/intel/igc/igc_ethtool.c index 93bce729be76..62d925b26f2c 100644 --- a/drivers/net/ethernet/intel/igc/igc_ethtool.c +++ b/drivers/net/ethernet/intel/igc/igc_ethtool.c @@ -880,12 +880,10 @@ static int igc_ethtool_get_coalesce(struct net_device *netdev, else ec->rx_coalesce_usecs = adapter->rx_itr_setting >> 2; - if (!(adapter->flags & IGC_FLAG_QUEUE_PAIRS)) { - if (adapter->tx_itr_setting <= 3) - ec->tx_coalesce_usecs = adapter->tx_itr_setting; - else - ec->tx_coalesce_usecs = adapter->tx_itr_setting >> 2; - } + if (adapter->tx_itr_setting <= 3) + ec->tx_coalesce_usecs = adapter->tx_itr_setting; + else + ec->tx_coalesce_usecs = adapter->tx_itr_setting >> 2; return 0; } @@ -910,9 +908,6 @@ static int igc_ethtool_set_coalesce(struct net_device *netdev, ec->tx_coalesce_usecs == 2) return -EINVAL; - if ((adapter->flags & IGC_FLAG_QUEUE_PAIRS) && ec->tx_coalesce_usecs) - return -EINVAL; - /* If ITR is disabled, disable DMAC */ if (ec->rx_coalesce_usecs == 0) { if (adapter->flags & IGC_FLAG_DMAC)