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path: root/drivers/net/tun.c
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Diffstat (limited to 'drivers/net/tun.c')
-rw-r--r--drivers/net/tun.c16
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 4cf38be26dc9..84f832806313 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1189,8 +1189,7 @@ static int tun_xdp_xmit(struct net_device *dev, int n,
struct tun_struct *tun = netdev_priv(dev);
struct tun_file *tfile;
u32 numqueues;
- int drops = 0;
- int cnt = n;
+ int nxmit = 0;
int i;
if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK))
@@ -1220,9 +1219,9 @@ resample:
if (__ptr_ring_produce(&tfile->tx_ring, frame)) {
atomic_long_inc(&dev->tx_dropped);
- xdp_return_frame_rx_napi(xdp);
- drops++;
+ break;
}
+ nxmit++;
}
spin_unlock(&tfile->tx_ring.producer_lock);
@@ -1230,17 +1229,21 @@ resample:
__tun_xdp_flush_tfile(tfile);
rcu_read_unlock();
- return cnt - drops;
+ return nxmit;
}
static int tun_xdp_tx(struct net_device *dev, struct xdp_buff *xdp)
{
struct xdp_frame *frame = xdp_convert_buff_to_frame(xdp);
+ int nxmit;
if (unlikely(!frame))
return -EOVERFLOW;
- return tun_xdp_xmit(dev, 1, &frame, XDP_XMIT_FLUSH);
+ nxmit = tun_xdp_xmit(dev, 1, &frame, XDP_XMIT_FLUSH);
+ if (!nxmit)
+ xdp_return_frame_rx_napi(frame);
+ return nxmit;
}
static const struct net_device_ops tap_netdev_ops = {
@@ -3005,7 +3008,6 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd,
return open_related_ns(&net->ns, get_net_ns);
}
- ret = 0;
rtnl_lock();
tun = tun_get(tfile);