diff mbox series

[net-next,4/7] virtio_net: separate virtnet_rx_resize()

Message ID 20240508080514.99458-5-xuanzhuo@linux.alibaba.com (mailing list archive)
State Changes Requested
Delegated to: Netdev Maintainers
Headers show
Series virtnet_net: prepare for af-xdp | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net-next, async
netdev/apply fail Patch does not apply to net-next-1

Commit Message

Xuan Zhuo May 8, 2024, 8:05 a.m. UTC 
This patch separates two sub-functions from virtnet_rx_resize():

* virtnet_rx_pause
* virtnet_rx_resume

Then the subsequent reset rx for xsk can share these two functions.

Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
---
 drivers/net/virtio/virtnet.h      |  3 +++
 drivers/net/virtio/virtnet_main.c | 29 +++++++++++++++++++++--------
 2 files changed, 24 insertions(+), 8 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/virtio/virtnet.h b/drivers/net/virtio/virtnet.h
index 4d902a79bde7..f95a75751a9b 100644
--- a/drivers/net/virtio/virtnet.h
+++ b/drivers/net/virtio/virtnet.h
@@ -234,4 +234,7 @@  struct virtnet_info {
 
 	u64 device_stats_cap;
 };
+
+void virtnet_rx_pause(struct virtnet_info *vi, struct virtnet_rq *rq);
+void virtnet_rx_resume(struct virtnet_info *vi, struct virtnet_rq *rq);
 #endif
diff --git a/drivers/net/virtio/virtnet_main.c b/drivers/net/virtio/virtnet_main.c
index f9f01c10dff6..aa382fbc52d6 100644
--- a/drivers/net/virtio/virtnet_main.c
+++ b/drivers/net/virtio/virtnet_main.c
@@ -2358,28 +2358,41 @@  static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
 	return NETDEV_TX_OK;
 }
 
-static int virtnet_rx_resize(struct virtnet_info *vi,
-			     struct virtnet_rq *rq, u32 ring_num)
+void virtnet_rx_pause(struct virtnet_info *vi, struct virtnet_rq *rq)
 {
 	bool running = netif_running(vi->dev);
-	int err, qindex;
-
-	qindex = rq - vi->rq;
 
 	if (running) {
 		napi_disable(&rq->napi);
 		cancel_work_sync(&rq->dim.work);
 	}
+}
 
-	err = virtqueue_resize(rq->vq, ring_num, virtnet_rq_unmap_free_buf);
-	if (err)
-		netdev_err(vi->dev, "resize rx fail: rx queue index: %d err: %d\n", qindex, err);
+void virtnet_rx_resume(struct virtnet_info *vi, struct virtnet_rq *rq)
+{
+	bool running = netif_running(vi->dev);
 
 	if (!try_fill_recv(vi, rq, GFP_KERNEL))
 		schedule_delayed_work(&vi->refill, 0);
 
 	if (running)
 		virtnet_napi_enable(rq->vq, &rq->napi);
+}
+
+static int virtnet_rx_resize(struct virtnet_info *vi,
+			     struct virtnet_rq *rq, u32 ring_num)
+{
+	int err, qindex;
+
+	qindex = rq - vi->rq;
+
+	virtnet_rx_pause(vi, rq);
+
+	err = virtqueue_resize(rq->vq, ring_num, virtnet_rq_unmap_free_buf);
+	if (err)
+		netdev_err(vi->dev, "resize rx fail: rx queue index: %d err: %d\n", qindex, err);
+
+	virtnet_rx_resume(vi, rq);
 	return err;
 }