diff options
| author | Ian McDonald <ian.mcdonald@jandi.co.nz> | 2006-07-23 23:33:28 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-07-24 12:44:21 -0700 |
| commit | 4b79f0af48d529a360d3529def01835dc5d45fe1 (patch) | |
| tree | 0d5013514dd5f19a09f9c2d32dee2ba0f4f4827a /net/dccp/feat.h | |
| parent | 8fdf679fdb00f588b65abb9c775c178098a05aeb (diff) | |
| download | lwn-4b79f0af48d529a360d3529def01835dc5d45fe1.tar.gz lwn-4b79f0af48d529a360d3529def01835dc5d45fe1.zip | |
[DCCP]: Fix default sequence window size
When using the default sequence window size (100) I got the following in
my logs:
Jun 22 14:24:09 localhost kernel: [ 1492.114775] DCCP: Step 6 failed for
DATA packet, (LSWL(6279674225) <= P.seqno(6279674749) <=
S.SWH(6279674324)) and (P.ackno doesn't exist or LAWL(18798206530) <=
P.ackno(1125899906842620) <= S.AWH(18798206548), sending SYNC...
Jun 22 14:24:09 localhost kernel: [ 1492.115147] DCCP: Step 6 failed for
DATA packet, (LSWL(6279674225) <= P.seqno(6279674750) <=
S.SWH(6279674324)) and (P.ackno doesn't exist or LAWL(18798206530) <=
P.ackno(1125899906842620) <= S.AWH(18798206549), sending SYNC...
I went to alter the default sysctl and it didn't take for new sockets.
Below patch fixes this.
I think the default is too low but it is what the DCCP spec specifies.
As a side effect of this my rx speed using iperf goes from about 2.8 Mbits/sec
to 3.5. This is still far too slow but it is a step in the right direction.
Compile tested only for IPv6 but not particularly complex change.
Signed off by: Ian McDonald <ian.mcdonald@jandi.co.nz>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dccp/feat.h')
| -rw-r--r-- | net/dccp/feat.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/dccp/feat.h b/net/dccp/feat.h index 6048373c7186..b44c45504fb6 100644 --- a/net/dccp/feat.h +++ b/net/dccp/feat.h @@ -26,4 +26,6 @@ extern void dccp_feat_clean(struct dccp_minisock *dmsk); extern int dccp_feat_clone(struct sock *oldsk, struct sock *newsk); extern int dccp_feat_init(struct dccp_minisock *dmsk); +extern int dccp_feat_default_sequence_window; + #endif /* _DCCP_FEAT_H */ |