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Tsirkin" , =?UTF-8?q?Eugenio=20P=C3=A9rez?= , Andrew Lunn , "David S. Miller" , Eric Dumazet , Paolo Abeni , virtualization@lists.linux.dev (open list:VIRTIO CORE AND NET DRIVERS), linux-kernel@vger.kernel.org (open list) Subject: [PATCH net-next v4 1/4] virtio-net: Refactor napi_enable paths Date: Tue, 25 Feb 2025 02:04:48 +0000 Message-ID: <20250225020455.212895-2-jdamato@fastly.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250225020455.212895-1-jdamato@fastly.com> References: <20250225020455.212895-1-jdamato@fastly.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Refactor virtnet_napi_enable and virtnet_napi_tx_enable to take a struct receive_queue. Create a helper, virtnet_napi_do_enable, which contains the logic to enable a NAPI. Signed-off-by: Joe Damato Acked-by: Jason Wang --- drivers/net/virtio_net.c | 37 +++++++++++++++++++++---------------- 1 file changed, 21 insertions(+), 16 deletions(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index ac26a6201c44..133b004c7a9a 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -2807,7 +2807,8 @@ static void skb_recv_done(struct virtqueue *rvq) virtqueue_napi_schedule(&rq->napi, rvq); } =20 -static void virtnet_napi_enable(struct virtqueue *vq, struct napi_struct *= napi) +static void virtnet_napi_do_enable(struct virtqueue *vq, + struct napi_struct *napi) { napi_enable(napi); =20 @@ -2820,10 +2821,16 @@ static void virtnet_napi_enable(struct virtqueue *v= q, struct napi_struct *napi) local_bh_enable(); } =20 -static void virtnet_napi_tx_enable(struct virtnet_info *vi, - struct virtqueue *vq, - struct napi_struct *napi) +static void virtnet_napi_enable(struct receive_queue *rq) { + virtnet_napi_do_enable(rq->vq, &rq->napi); +} + +static void virtnet_napi_tx_enable(struct send_queue *sq) +{ + struct virtnet_info *vi =3D sq->vq->vdev->priv; + struct napi_struct *napi =3D &sq->napi; + if (!napi->weight) return; =20 @@ -2835,7 +2842,7 @@ static void virtnet_napi_tx_enable(struct virtnet_inf= o *vi, return; } =20 - return virtnet_napi_enable(vq, napi); + virtnet_napi_do_enable(sq->vq, napi); } =20 static void virtnet_napi_tx_disable(struct napi_struct *napi) @@ -2856,7 +2863,7 @@ static void refill_work(struct work_struct *work) =20 napi_disable(&rq->napi); still_empty =3D !try_fill_recv(vi, rq, GFP_KERNEL); - virtnet_napi_enable(rq->vq, &rq->napi); + virtnet_napi_enable(rq); =20 /* In theory, this can happen: if we don't get any buffers in * we will *never* try to fill again. @@ -3073,8 +3080,8 @@ static int virtnet_enable_queue_pair(struct virtnet_i= nfo *vi, int qp_index) if (err < 0) goto err_xdp_reg_mem_model; =20 - virtnet_napi_enable(vi->rq[qp_index].vq, &vi->rq[qp_index].napi); - virtnet_napi_tx_enable(vi, vi->sq[qp_index].vq, &vi->sq[qp_index].napi); + virtnet_napi_enable(&vi->rq[qp_index]); + virtnet_napi_tx_enable(&vi->sq[qp_index]); =20 return 0; =20 @@ -3339,7 +3346,7 @@ static void virtnet_rx_resume(struct virtnet_info *vi= , struct receive_queue *rq) schedule_delayed_work(&vi->refill, 0); =20 if (running) - virtnet_napi_enable(rq->vq, &rq->napi); + virtnet_napi_enable(rq); } =20 static int virtnet_rx_resize(struct virtnet_info *vi, @@ -3402,7 +3409,7 @@ static void virtnet_tx_resume(struct virtnet_info *vi= , struct send_queue *sq) __netif_tx_unlock_bh(txq); =20 if (running) - virtnet_napi_tx_enable(vi, sq->vq, &sq->napi); + virtnet_napi_tx_enable(sq); } =20 static int virtnet_tx_resize(struct virtnet_info *vi, struct send_queue *s= q, @@ -5983,9 +5990,8 @@ static int virtnet_xdp_set(struct net_device *dev, st= ruct bpf_prog *prog, if (old_prog) bpf_prog_put(old_prog); if (netif_running(dev)) { - virtnet_napi_enable(vi->rq[i].vq, &vi->rq[i].napi); - virtnet_napi_tx_enable(vi, vi->sq[i].vq, - &vi->sq[i].napi); + virtnet_napi_enable(&vi->rq[i]); + virtnet_napi_tx_enable(&vi->sq[i]); } } =20 @@ -6000,9 +6006,8 @@ static int virtnet_xdp_set(struct net_device *dev, st= ruct bpf_prog *prog, =20 if (netif_running(dev)) { for (i =3D 0; i < vi->max_queue_pairs; i++) { - virtnet_napi_enable(vi->rq[i].vq, &vi->rq[i].napi); - virtnet_napi_tx_enable(vi, vi->sq[i].vq, - &vi->sq[i].napi); + virtnet_napi_enable(&vi->rq[i]); + virtnet_napi_tx_enable(&vi->sq[i]); } } if (prog) --=20 2.45.2