On 02/12/2014 07:59 PM, Michael S. Tsirkin wrote: > On Wed, Feb 12, 2014 at 01:43:28PM +0800, Jason Wang wrote: >> > We should alloc big buffers also when guest can receive UFO >> > pakcets. Otherwise the big packets will be truncated when mergeable rx >> > buffer is disabled. > Not truncated, they will be dropped. >
Why dropped? We enable the ufo on tap0 if VIRTIO_NET_F_GUEST_UFO is negotiated. So skb was queued on the receive queue. But since the receive buffer is small, it will be truncated during tun_put_user(). -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
