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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 35E6AC4167B for ; Mon, 23 May 2022 17:58:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243437AbiEWR46 (ORCPT ); Mon, 23 May 2022 13:56:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42196 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240318AbiEWRZ3 (ORCPT ); Mon, 23 May 2022 13:25:29 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3697282168; Mon, 23 May 2022 10:20:52 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id B4147610E8; Mon, 23 May 2022 17:20:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BDE4BC385A9; Mon, 23 May 2022 17:20:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1653326452; bh=VJK7TwURwrK0TLfXEBbhNwto/77OQeC3hI0AX6HaA5Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=zxT4/8DpmMnJnPp/puMFT5p97iVPSckChdMDo2cJFOOSos+z2b6qLydEO5K8tbxhQ tNuqql1GGy2d+UIQZX4qNdKTci63TkXnybqZyEaWceFElFKMCflC+vgy5V56nP/J2C 7RO8ouHQTnNfxu87sVKYE9Urpa8Aewkzmt6/7Uws= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Michal Wilczynski , Tony Nguyen , Sasha Levin , Gurucharan Subject: [PATCH 5.15 086/132] ice: Fix interrupt moderation settings getting cleared Date: Mon, 23 May 2022 19:04:55 +0200 Message-Id: <20220523165837.348246556@linuxfoundation.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220523165823.492309987@linuxfoundation.org> References: <20220523165823.492309987@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Michal Wilczynski [ Upstream commit bf13502ed5f941b0777b3fd1e24dac5d93f3886c ] Adaptive-rx and Adaptive-tx are interrupt moderation settings that can be enabled/disabled using ethtool: ethtool -C ethX adaptive-rx on/off adaptive-tx on/off Unfortunately those settings are getting cleared after changing number of queues, or in ethtool world 'channels': ethtool -L ethX rx 1 tx 1 Clearing was happening due to introduction of bit fields in ice_ring_container struct. This way only itr_setting bits were rebuilt during ice_vsi_rebuild_set_coalesce(). Introduce an anonymous struct of bitfields and create a union to refer to them as a single variable. This way variable can be easily saved and restored. Fixes: 61dc79ced7aa ("ice: Restore interrupt throttle settings after VSI rebuild") Signed-off-by: Michal Wilczynski Tested-by: Gurucharan (A Contingent worker at Intel) Signed-off-by: Tony Nguyen Signed-off-by: Sasha Levin --- drivers/net/ethernet/intel/ice/ice_lib.c | 16 ++++++++-------- drivers/net/ethernet/intel/ice/ice_txrx.h | 11 ++++++++--- 2 files changed, 16 insertions(+), 11 deletions(-) diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c index 653996e8fd30..4417238b0e64 100644 --- a/drivers/net/ethernet/intel/ice/ice_lib.c +++ b/drivers/net/ethernet/intel/ice/ice_lib.c @@ -2980,8 +2980,8 @@ ice_vsi_rebuild_get_coalesce(struct ice_vsi *vsi, ice_for_each_q_vector(vsi, i) { struct ice_q_vector *q_vector = vsi->q_vectors[i]; - coalesce[i].itr_tx = q_vector->tx.itr_setting; - coalesce[i].itr_rx = q_vector->rx.itr_setting; + coalesce[i].itr_tx = q_vector->tx.itr_settings; + coalesce[i].itr_rx = q_vector->rx.itr_settings; coalesce[i].intrl = q_vector->intrl; if (i < vsi->num_txq) @@ -3037,21 +3037,21 @@ ice_vsi_rebuild_set_coalesce(struct ice_vsi *vsi, */ if (i < vsi->alloc_rxq && coalesce[i].rx_valid) { rc = &vsi->q_vectors[i]->rx; - rc->itr_setting = coalesce[i].itr_rx; + rc->itr_settings = coalesce[i].itr_rx; ice_write_itr(rc, rc->itr_setting); } else if (i < vsi->alloc_rxq) { rc = &vsi->q_vectors[i]->rx; - rc->itr_setting = coalesce[0].itr_rx; + rc->itr_settings = coalesce[0].itr_rx; ice_write_itr(rc, rc->itr_setting); } if (i < vsi->alloc_txq && coalesce[i].tx_valid) { rc = &vsi->q_vectors[i]->tx; - rc->itr_setting = coalesce[i].itr_tx; + rc->itr_settings = coalesce[i].itr_tx; ice_write_itr(rc, rc->itr_setting); } else if (i < vsi->alloc_txq) { rc = &vsi->q_vectors[i]->tx; - rc->itr_setting = coalesce[0].itr_tx; + rc->itr_settings = coalesce[0].itr_tx; ice_write_itr(rc, rc->itr_setting); } @@ -3065,12 +3065,12 @@ ice_vsi_rebuild_set_coalesce(struct ice_vsi *vsi, for (; i < vsi->num_q_vectors; i++) { /* transmit */ rc = &vsi->q_vectors[i]->tx; - rc->itr_setting = coalesce[0].itr_tx; + rc->itr_settings = coalesce[0].itr_tx; ice_write_itr(rc, rc->itr_setting); /* receive */ rc = &vsi->q_vectors[i]->rx; - rc->itr_setting = coalesce[0].itr_rx; + rc->itr_settings = coalesce[0].itr_rx; ice_write_itr(rc, rc->itr_setting); vsi->q_vectors[i]->intrl = coalesce[0].intrl; diff --git a/drivers/net/ethernet/intel/ice/ice_txrx.h b/drivers/net/ethernet/intel/ice/ice_txrx.h index 69f78a1c234f..4adc3dff04ba 100644 --- a/drivers/net/ethernet/intel/ice/ice_txrx.h +++ b/drivers/net/ethernet/intel/ice/ice_txrx.h @@ -345,9 +345,14 @@ struct ice_ring_container { /* this matches the maximum number of ITR bits, but in usec * values, so it is shifted left one bit (bit zero is ignored) */ - u16 itr_setting:13; - u16 itr_reserved:2; - u16 itr_mode:1; + union { + struct { + u16 itr_setting:13; + u16 itr_reserved:2; + u16 itr_mode:1; + }; + u16 itr_settings; + }; enum ice_container_type type; }; -- 2.35.1