Re: [PATCH v2 net-next] tcp: add new SNMP counter for drops when try to queue in rcv queue

[David Miller]

From: Yafang Shao <laoar.shao@xxxxxxxxx>
Date: Thu, 28 Jun 2018 00:22:56 -0400

> 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 a new SNMP counter is introduced to track this behavior.
> 
> LINUX_MIB_TCPRCVQDROP:  Number of packets meant to be queued in rcv queue
> 			but dropped because socket rcvbuf limit hit.
> 
> Signed-off-by: Yafang Shao <laoar.shao@xxxxxxxxx>

Applied to net-next.