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Message-Id: <20240116094313.119939-16-xuanzhuo@linux.alibaba.com>
Date: Tue, 16 Jan 2024 17:43:11 +0800
From: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
To: netdev@...r.kernel.org
Cc: "Michael S. Tsirkin" <mst@...hat.com>,
	Jason Wang <jasowang@...hat.com>,
	Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Alexei Starovoitov <ast@...nel.org>,
	Daniel Borkmann <daniel@...earbox.net>,
	Jesper Dangaard Brouer <hawk@...nel.org>,
	John Fastabend <john.fastabend@...il.com>,
	virtualization@...ts.linux.dev,
	bpf@...r.kernel.org
Subject: [PATCH net-next 15/17] virtio_net: xsk: rx: free the unused xsk buffer

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@...ux.alibaba.com>
---
 drivers/net/virtio/main.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/net/virtio/main.c b/drivers/net/virtio/main.c
index 35f0daaea7e5..81d390781a4f 100644
--- a/drivers/net/virtio/main.c
+++ b/drivers/net/virtio/main.c
@@ -4146,6 +4146,14 @@ void virtnet_rq_free_unused_bufs(struct virtqueue *vq)
 	rq = &vi->rq[i];
 
 	while ((buf = virtqueue_detach_unused_buf(vq)) != NULL) {
+		if (rq->xsk.pool) {
+			struct xdp_buff *xdp;
+
+			xdp = (struct xdp_buff *)buf;
+			xsk_buff_free(xdp);
+			continue;
+		}
+
 		if (virtqueue_get_dma_premapped(rq->vq))
 			virtnet_rq_unmap(rq, buf, 0);
 
-- 
2.32.0.3.g01195cf9f


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