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xiaoxiang pushed a commit to branch master
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The following commit(s) were added to refs/heads/master by this push:
new 6b35a49f6e dirivers: virtio: Fix virtnet_transmit() in
virtio-mmio-net.c
6b35a49f6e is described below
commit 6b35a49f6eea6f88242131ec9dd2730323315aba
Author: Masayuki Ishikawa <[email protected]>
AuthorDate: Thu Jun 1 11:50:54 2023 +0900
dirivers: virtio: Fix virtnet_transmit() in virtio-mmio-net.c
Summary:
- I noticed that the driver sends incorrect packets sometimes.
- This commit fixes this issue.
Impact:
- None
Testing:
- Tested with qemu-7.1
Signed-off-by: Masayuki Ishikawa <[email protected]>
---
drivers/virtio/virtio-mmio-net.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/virtio/virtio-mmio-net.c b/drivers/virtio/virtio-mmio-net.c
index cbf1127936..c8a4a6044a 100644
--- a/drivers/virtio/virtio-mmio-net.c
+++ b/drivers/virtio/virtio-mmio-net.c
@@ -394,6 +394,14 @@ static int virtnet_transmit(FAR struct virtnet_driver_s
*priv)
wd_start(&priv->vnet_txtimeout, VIRTNET_TXTIMEOUT,
virtnet_txtimeout_expiry, (wdparm_t)priv);
+
+ /* Wait for completion */
+
+ while (priv->txq->avail->idx != priv->txq->used->idx)
+ {
+ virtio_mb();
+ }
+
return OK;
}
