Re: [net,v3] tcp: correct handling of extreme memory squeeze

On Tue, Jan 28, 2025 at 4:57 PM Neal Cardwell wrote:

Yes, thanks for the fix. LGTM as well.

Reviewed-by: Neal Cardwell

BTW, IMHO it would be nice to have some sort of NET_INC_STATS() of an SNMP stat for this case, since we have SNMP stat increases for other 0-window cases. That could help debugging performance problems from memory pressure and zero windows. But that can be in a separate patch for net-next once this fix is in net-next.

This is LINUX_MIB_TCPRCVQDROP ( TCPRcvQDrop )