Re: [PATCH net-next] tcp: replace LINUX_MIB_TCPOFODROP with LINUX_MIB_TCPRMEMFULLDROP for drops due to receive buffer full

[Eric Dumazet]

On 06/27/2018 04:50 AM, Yafang Shao wrote:
> When sk_rmem_alloc is larger than the receive buffer and we can't
> schedule more memory for it, the skb will be dropped.
> 
> In above situation, if this skb is put into the ofo queue,
> LINUX_MIB_TCPOFODROP is incremented to track it,
> while if this skb is put into the receive queue, there's no record.
> 
> So LINUX_MIB_TCPOFODROP is replaced with LINUX_MIB_TCPRMEMFULLDROP to track
> this behavior.


Hi Yafang

I do not want to remove TCPOFODrop and mix multiple causes in one single counter.

Please take a look at commit a6df1ae9383697c to have the reasoning.

Thanks.