Re: [PATCH v2] virtio_net: fix support for small rings

2017-03-29 Thread Jason Wang
On 2017年03月30日 01:42, Michael S. Tsirkin wrote: When ring size is small (<32 entries) making buffers smaller means a full ring might not be able to hold enough buffers to fit a single large packet. Make sure a ring full of buffers is large enough to allow at least one packet of max size. Fixe

[PATCH v2] virtio_net: fix support for small rings

2017-03-29 Thread Michael S. Tsirkin
When ring size is small (<32 entries) making buffers smaller means a full ring might not be able to hold enough buffers to fit a single large packet. Make sure a ring full of buffers is large enough to allow at least one packet of max size. Fixes: 2613af0ed18a ("virtio_net: migrate mergeable rx b