From patchwork Thu Oct 12 07:44:05 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heng Qi X-Patchwork-Id: 13418455 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 E6A5410785 for ; Thu, 12 Oct 2023 07:44:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=none Received: from out30-112.freemail.mail.aliyun.com (out30-112.freemail.mail.aliyun.com [115.124.30.112]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 588D3C0 for ; Thu, 12 Oct 2023 00:44:15 -0700 (PDT) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R121e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018045170;MF=hengqi@linux.alibaba.com;NM=1;PH=DS;RN=14;SR=0;TI=SMTPD_---0Vtzpj0Q_1697096651; Received: from localhost(mailfrom:hengqi@linux.alibaba.com fp:SMTPD_---0Vtzpj0Q_1697096651) by smtp.aliyun-inc.com; Thu, 12 Oct 2023 15:44:11 +0800 From: Heng Qi To: Jason Wang , "Michael S. Tsirkin" , netdev@vger.kernel.org, virtualization@lists.linux-foundation.org Cc: Xuan Zhuo , Eric Dumazet , "David S. Miller" , Paolo Abeni , Jesper Dangaard Brouer , John Fastabend , Alexei Starovoitov , Jakub Kicinski , Simon Horman , "Liu, Yujie" Subject: [PATCH net-next 1/5] virtio-net: returns whether napi is complete Date: Thu, 12 Oct 2023 15:44:05 +0800 Message-Id: X-Mailer: git-send-email 2.19.1.6.gb485710b In-Reply-To: References: 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 rx netdim needs to count the traffic during a complete napi process, and start updating and comparing samples to make decisions after the napi ends. Let virtqueue_napi_complete() return true if napi is done, otherwise vice versa. Signed-off-by: Heng Qi Acked-by: Jason Wang --- drivers/net/virtio_net.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index a52fd743504a..cf5d2ef4bd24 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -431,7 +431,7 @@ static void virtqueue_napi_schedule(struct napi_struct *napi, } } -static void virtqueue_napi_complete(struct napi_struct *napi, +static bool virtqueue_napi_complete(struct napi_struct *napi, struct virtqueue *vq, int processed) { int opaque; @@ -440,9 +440,13 @@ static void virtqueue_napi_complete(struct napi_struct *napi, if (napi_complete_done(napi, processed)) { if (unlikely(virtqueue_poll(vq, opaque))) virtqueue_napi_schedule(napi, vq); + else + return true; } else { virtqueue_disable_cb(vq); } + + return false; } static void skb_xmit_done(struct virtqueue *vq)