Instead of dropping the packet, we keep the skb buffer, and return NETDEV_TX_BUSY to let upper layer retry send. This will not cause endless loop, because the host is taking data away from ring buffer.
Signed-off-by: Haiyang Zhang <[email protected]> Reviewed-by: K. Y. Srinivasan <[email protected]> --- drivers/net/hyperv/netvsc_drv.c | 5 +---- 1 files changed, 1 insertions(+), 4 deletions(-) diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index 2517d20..dd29478 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -223,13 +223,10 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net) net->stats.tx_bytes += skb->len; net->stats.tx_packets++; } else { - /* we are shutting down or bus overloaded, just drop packet */ - net->stats.tx_dropped++; kfree(packet); - dev_kfree_skb_any(skb); } - return NETDEV_TX_OK; + return ret ? NETDEV_TX_BUSY : NETDEV_TX_OK; } /* -- 1.7.4.1 _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
