On Tue, 16 Jun 2026 19:59:12 +0800 Menglong Dong wrote: > For now, XDP_RING_NEED_WAKEUP is not supported properly by the virtio-net > in the tx path for example: we set xsk_set_tx_need_wakeup() in > virtnet_xsk_xmit(), but we didn't call xsk_clear_tx_need_wakeup() > anywhere, which means the user will call send() for every packet. > > We call xsk_set_tx_need_wakeup() after virtnet_xsk_xmit_batch() if sq->vq > is empty, as we can't be wakeup by the skb_xmit_done() in this case. > Otherwise, we will clear the wakeup flag. > > Race condition is considered for tx path.
Seems to follow what mlx5 does so presumably this is fine but IDK if there's anything virtio-specific that we need to be worried about. Xuan Zhuo, please TAL? -- mping: VIRTIO NET DRIVER
