Re: [PATCH net-next] fq_codel: add memory limitation per queue

On Sun, 2016-05-08 at 22:07 -0700, Cong Wang wrote:

On Sun, May 8, 2016 at 9:31 PM, Eric Dumazet [off-list ref] wrote:

quoted

On Sun, 2016-05-08 at 21:14 -0700, Cong Wang wrote:

quoted

So when the packet is dropped due to memory over limit, should
we return failure for this case? Or I miss anything?

Same behavior than before.

If we dropped some packets of this flow, we return NET_XMIT_CN

I think for the limited memory case, the upper layer is supposed
to stop sending more packets when hitting the limit.

They doe. NET_XMIT_CN for example aborts IP fragmentation.

TCP flows will also instantly react.