From patchwork Tue Sep 19 07:49:13 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heng Qi X-Patchwork-Id: 13390917 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 05C6D38DD5 for ; Tue, 19 Sep 2023 07:49:26 +0000 (UTC) Received: from out30-113.freemail.mail.aliyun.com (out30-113.freemail.mail.aliyun.com [115.124.30.113]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BE8D9123 for ; Tue, 19 Sep 2023 00:49:24 -0700 (PDT) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R101e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018046056;MF=hengqi@linux.alibaba.com;NM=1;PH=DS;RN=14;SR=0;TI=SMTPD_---0VsQbAMz_1695109760; Received: from localhost(mailfrom:hengqi@linux.alibaba.com fp:SMTPD_---0VsQbAMz_1695109760) by smtp.aliyun-inc.com; Tue, 19 Sep 2023 15:49:21 +0800 From: Heng Qi To: netdev@vger.kernel.org, virtualization@lists.linux-foundation.org Cc: "Michael S . Tsirkin" , Jason Wang , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , Xuan Zhuo , Gavin Li Subject: [PATCH net 4/6] virtio-net: fix per queue coalescing parameter setting Date: Tue, 19 Sep 2023 15:49:13 +0800 Message-Id: <20230919074915.103110-5-hengqi@linux.alibaba.com> X-Mailer: git-send-email 2.19.1.6.gb485710b In-Reply-To: <20230919074915.103110-1-hengqi@linux.alibaba.com> References: <20230919074915.103110-1-hengqi@linux.alibaba.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Status: No, score=-9.9 required=5.0 tests=BAYES_00, ENV_AND_HDR_SPF_MATCH,RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,USER_IN_DEF_SPF_WL autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: kuba@kernel.org When the user sets a non-zero coalescing parameter to 0 for a specific virtqueue, it does not work as expected, so let's fix this. Fixes: 394bd87764b6 ("virtio_net: support per queue interrupt coalesce command") Reported-by: Xiaoming Zhao Cc: Gavin Li Signed-off-by: Heng Qi --- drivers/net/virtio_net.c | 36 ++++++++++++++++-------------------- 1 file changed, 16 insertions(+), 20 deletions(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index ce60162d380a..f9a7f6afd099 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -3296,27 +3296,23 @@ static int virtnet_send_notf_coal_vq_cmds(struct virtnet_info *vi, { int err; - if (ec->rx_coalesce_usecs || ec->rx_max_coalesced_frames) { - err = virtnet_send_ctrl_coal_vq_cmd(vi, rxq2vq(queue), - ec->rx_coalesce_usecs, - ec->rx_max_coalesced_frames); - if (err) - return err; - /* Save parameters */ - vi->rq[queue].intr_coal.max_usecs = ec->rx_coalesce_usecs; - vi->rq[queue].intr_coal.max_packets = ec->rx_max_coalesced_frames; - } + err = virtnet_send_ctrl_coal_vq_cmd(vi, rxq2vq(queue), + ec->rx_coalesce_usecs, + ec->rx_max_coalesced_frames); + if (err) + return err; + /* Save parameters */ + vi->rq[queue].intr_coal.max_usecs = ec->rx_coalesce_usecs; + vi->rq[queue].intr_coal.max_packets = ec->rx_max_coalesced_frames; - if (ec->tx_coalesce_usecs || ec->tx_max_coalesced_frames) { - err = virtnet_send_ctrl_coal_vq_cmd(vi, txq2vq(queue), - ec->tx_coalesce_usecs, - ec->tx_max_coalesced_frames); - if (err) - return err; - /* Save parameters */ - vi->sq[queue].intr_coal.max_usecs = ec->tx_coalesce_usecs; - vi->sq[queue].intr_coal.max_packets = ec->tx_max_coalesced_frames; - } + err = virtnet_send_ctrl_coal_vq_cmd(vi, txq2vq(queue), + ec->tx_coalesce_usecs, + ec->tx_max_coalesced_frames); + if (err) + return err; + /* Save parameters */ + vi->sq[queue].intr_coal.max_usecs = ec->tx_coalesce_usecs; + vi->sq[queue].intr_coal.max_packets = ec->tx_max_coalesced_frames; return 0; }