Introduce virtnet_xsk_pool_disable() for xsk unbind.
Signed-off-by: Xuan Zhuo <[email protected]>
---
drivers/net/virtio/xsk.c | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)
diff --git a/drivers/net/virtio/xsk.c b/drivers/net/virtio/xsk.c
index a7e8005233d2..18c0c6e4d501 100644
--- a/drivers/net/virtio/xsk.c
+++ b/drivers/net/virtio/xsk.c
@@ -113,3 +113,32 @@ static int virtnet_xsk_pool_enable(struct net_device *dev,
DMA_TO_DEVICE);
return err;
}
+
+static int virtnet_xsk_pool_disable(struct net_device *dev, u16 qid)
+{
+ struct virtnet_info *vi = netdev_priv(dev);
+ struct receive_queue *rq;
+ struct send_queue *sq;
+ int err1, err2;
+
+ if (qid >= vi->curr_queue_pairs)
+ return -EINVAL;
+
+ sq = &vi->sq[qid];
+ rq = &vi->rq[qid];
+
+ virtio_dma_unmap(&vi->vdev->dev, sq->xsk.hdr_dma_address, vi->hdr_len,
+ DMA_TO_DEVICE);
+
+ xsk_pool_dma_unmap(sq->xsk.pool, 0);
+
+ rcu_assign_pointer(sq->xsk.pool, NULL);
+
+ /* Sync with the XSK wakeup and with NAPI. */
+ synchronize_net();
+
+ err1 = virtnet_tx_reset(vi, sq);
+ err2 = virtnet_rq_bind_xsk_pool(vi, rq, NULL, NULL);
+
+ return err1 | err2;
+}
--
2.32.0.3.g01195cf9f
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