Dan Siemon
4a2b9c3756
net_sched: fix ip_tos2prio
...
ECN support incorrectly maps ECN BESTEFFORT packets to TC_PRIO_FILLER
(1) instead of TC_PRIO_BESTEFFORT (0)
This means ECN enabled flows are placed in pfifo_fast/prio low priority
band, giving ECN enabled flows [ECT(0) and CE codepoints] higher drop
probabilities.
This is rather unfortunate, given we would like ECN being more widely
used.
Ref : http://www.coverfire.com/archives/2011/03/13/pfifo_fast-and-ecn/
Signed-off-by: Dan Siemon <dan@coverfire.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Dave Täht <d@taht.net>
Cc: Jonathan Morton <chromatix99@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-15 18:53:54 -07:00
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