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2 Commits

Author SHA1 Message Date
Thomas Leonard
e55c304160 Drop frames if the xmit queue gets too long 
With lots of VMs updating, the firewall quit with:

    2017-04-23 20:47:52 -00:00: INF [frameQ] Queue length for 10.137.3.11: incr to 474
    2017-04-23 20:47:52 -00:00: INF [memory_pressure] Writing meminfo: free 2648 / 17504 kB (15.13 %)
    [...]
    Fatal error: out of memory.

The firewall will now drop frames when more than 10 are queued (note
that queuing only starts once the network driver's transmit buffer is
already full).
 2017-04-29 12:05:30 +01:00
Thomas Leonard
3409a19792 Keep track of transmit queue lengths 
Log if we have to wait to send a frame.
 2016-01-17 11:42:40 +00:00