[PATCH 22/33] virtio_net: xsk: introduce xsk disable

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Introduce virtnet_xsk_pool_disable() for xsk unbind.

Signed-off-by: Xuan Zhuo <xuanzhuo@xxxxxxxxxxxxxxxxx>
---
 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




[Index of Archives]     [Linux Samsung SoC]     [Linux Rockchip SoC]     [Linux Actions SoC]     [Linux for Synopsys ARC Processors]     [Linux NFS]     [Linux NILFS]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]


  Powered by Linux