Since this will be called in other circumstances(freeze), we must check
whether it is xsk's buffer in this function. It cannot be judged outside
this function.
Signed-off-by: Xuan Zhuo <xuanzhuo@xxxxxxxxxxxxxxxxx>
---
drivers/net/virtio/main.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/net/virtio/main.c b/drivers/net/virtio/main.c
index 003dd67ab707..ac62d0955c13 100644
--- a/drivers/net/virtio/main.c
+++ b/drivers/net/virtio/main.c
@@ -3904,8 +3904,21 @@ void virtnet_sq_free_unused_buf(struct virtqueue *vq, void *buf)
void virtnet_rq_free_unused_buf(struct virtqueue *vq, void *buf)
{
struct virtnet_info *vi = vq->vdev->priv;
+ struct xsk_buff_pool *pool;
int i = vq2rxq(vq);
+ rcu_read_lock();
+ pool = rcu_dereference(vi->rq[i].xsk.pool);
+ if (pool) {
+ struct xdp_buff *xdp;
+
+ xdp = (struct xdp_buff *)buf;
+ xsk_buff_free(xdp);
+ rcu_read_unlock();
+ return;
+ }
+ rcu_read_unlock();
+
if (vi->mergeable_rx_bufs)
put_page(virt_to_head_page(buf));
else if (vi->big_packets)
--
2.32.0.3.g01195cf9f
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