receive the xsk buffer for small mode.
Signed-off-by: Xuan Zhuo <xuanzhuo@xxxxxxxxxxxxxxxxx>
---
drivers/net/virtio/xsk.c | 33 +++++++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)
diff --git a/drivers/net/virtio/xsk.c b/drivers/net/virtio/xsk.c
index 6f4fa32b1184..a73559faadf6 100644
--- a/drivers/net/virtio/xsk.c
+++ b/drivers/net/virtio/xsk.c
@@ -200,6 +200,37 @@ static struct sk_buff *virtnet_receive_xsk_merge(struct net_device *dev, struct
return NULL;
}
+static struct sk_buff *virtnet_receive_xsk_small(struct net_device *dev, struct virtnet_info *vi,
+ struct virtnet_rq *rq, struct xdp_buff *xdp,
+ unsigned int *xdp_xmit,
+ struct virtnet_rq_stats *stats)
+{
+ struct bpf_prog *prog;
+ u32 ret;
+
+ ret = XDP_PASS;
+ rcu_read_lock();
+ prog = rcu_dereference(rq->xdp_prog);
+ if (prog)
+ ret = virtnet_xdp_handler(prog, xdp, dev, xdp_xmit, stats);
+ rcu_read_unlock();
+
+ switch (ret) {
+ case XDP_PASS:
+ return xdp_construct_skb(rq, xdp);
+
+ case XDP_TX:
+ case XDP_REDIRECT:
+ return NULL;
+
+ default:
+ /* drop packet */
+ xsk_buff_free(xdp);
+ u64_stats_inc(&stats->drops);
+ return NULL;
+ }
+}
+
struct sk_buff *virtnet_receive_xsk_buf(struct virtnet_info *vi, struct virtnet_rq *rq,
void *buf, u32 len,
unsigned int *xdp_xmit,
@@ -226,6 +257,8 @@ struct sk_buff *virtnet_receive_xsk_buf(struct virtnet_info *vi, struct virtnet_
if (vi->mergeable_rx_bufs)
skb = virtnet_receive_xsk_merge(dev, vi, rq, xdp, xdp_xmit, stats);
+ else
+ skb = virtnet_receive_xsk_small(dev, vi, rq, xdp, xdp_xmit, stats);
return skb;
}
--
2.32.0.3.g01195cf9f
