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| author | Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> | 2009-04-02 01:18:20 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-04-03 01:31:45 +0200 |
| commit | 9eb9362e569062e2f841b7a023e5fcde10ed63b4 (patch) | |
| tree | 06dc2aa031ca9cd604ece8a9fd5c5bc8502b2257 /net/xfrm | |
| parent | tcp: add helper for counter tweaking due mid-wq change (diff) | |
| download | linux-9eb9362e569062e2f841b7a023e5fcde10ed63b4.tar.xz linux-9eb9362e569062e2f841b7a023e5fcde10ed63b4.zip | |
tcp: miscounts due to tcp_fragment pcount reset
It seems that trivial reset of pcount to one was not sufficient
in tcp_retransmit_skb. Multiple counters experience a positive
miscount when skb's pcount gets lowered without the necessary
adjustments (depending on skb's sacked bits which exactly), at
worst a packets_out miscount can crash at RTO if the write queue
is empty!
Triggering this requires mss change, so bidir tcp or mtu probe or
like.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Tested-by: Uwe Bugla <uwe.bugla@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/xfrm')
0 files changed, 0 insertions, 0 deletions