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| author | Angelo P. Castellani <angelo.castellani+lkml@gmail.com> | 2006-05-16 21:42:11 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2006-05-16 21:42:11 -0700 |
| commit | 8872d8e1c4311dd7e5086975df9c76120a0be83b (patch) | |
| tree | 1486697e32c65521785721fe9523f4eaee9a3e90 /Documentation | |
| parent | d8fd0a73169e90022dc3ccf3083ca24573b44b5c (diff) | |
| download | kernel_samsung_smdk4412-8872d8e1c4311dd7e5086975df9c76120a0be83b.zip kernel_samsung_smdk4412-8872d8e1c4311dd7e5086975df9c76120a0be83b.tar.gz kernel_samsung_smdk4412-8872d8e1c4311dd7e5086975df9c76120a0be83b.tar.bz2 | |
[TCP]: reno sacked_out count fix
From: "Angelo P. Castellani" <angelo.castellani+lkml@gmail.com>
Using NewReno, if a sk_buff is timed out and is accounted as lost_out,
it should also be removed from the sacked_out.
This is necessary because recovery using NewReno fast retransmit could
take up to a lot RTTs and the sk_buff RTO can expire without actually
being really lost.
left_out = sacked_out + lost_out
in_flight = packets_out - left_out + retrans_out
Using NewReno without this patch, on very large network losses,
left_out becames bigger than packets_out + retrans_out (!!).
For this reason unsigned integer in_flight overflows to 2^32 - something.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions