From patchwork Mon Dec 11 10:36:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heng Qi X-Patchwork-Id: 13486999 X-Patchwork-Delegate: kuba@kernel.org Received: from out30-133.freemail.mail.aliyun.com (out30-133.freemail.mail.aliyun.com [115.124.30.133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DE88DD2 for ; Mon, 11 Dec 2023 02:36:12 -0800 (PST) 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=ay29a033018046051;MF=hengqi@linux.alibaba.com;NM=1;PH=DS;RN=14;SR=0;TI=SMTPD_---0VyG86RU_1702290968; Received: from localhost(mailfrom:hengqi@linux.alibaba.com fp:SMTPD_---0VyG86RU_1702290968) by smtp.aliyun-inc.com; Mon, 11 Dec 2023 18:36:09 +0800 From: Heng Qi To: netdev@vger.kernel.org, virtualization@lists.linux-foundation.org Cc: jasowang@redhat.com, mst@redhat.com, pabeni@redhat.com, kuba@kernel.org, yinjun.zhang@corigine.com, edumazet@google.com, davem@davemloft.net, hawk@kernel.org, john.fastabend@gmail.com, ast@kernel.org, horms@kernel.org, xuanzhuo@linux.alibaba.com Subject: [PATCH net-next v8 1/4] virtio-net: returns whether napi is complete Date: Mon, 11 Dec 2023 18:36:04 +0800 Message-Id: <4497004c8ba06fdb621689e40c2f801c493c83ea.1702275514.git.hengqi@linux.alibaba.com> 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-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 d16f592c2061..0ad2894e6a5e 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)