linux-toradex.git/net/ipv4/tcp_htcp.c, branch v2.6.27.17

[TCP]: Cong.ctrl modules: remove unused good_ack from cong_avoid

2008-01-28T22:55:41+00:00

Signed-off-by: Ilpo Järvinen 
Signed-off-by: Herbert Xu 
Signed-off-by: David S. Miller

[TCP]: H-TCP maxRTT estimation at startup

2007-08-08T01:29:05+00:00

Small patch to H-TCP from Douglas Leith. 

Fix estimation of maxRTT.  The original code ignores rtt measurements
during slow start (via the check tp->snd_ssthresh < 0xFFFF) yet this
is probably a good time to try to estimate max rtt as delayed acking
is disabled and slow start will only exit on a loss which presumably
corresponds to a maxrtt measurement.  Second, the original code (via
the check htcp_ccount(ca) > 3) ignores rtt data during what it
estimates to be the first 3 round-trip times.  This seems like an
unnecessary check now that the RCV timestamp are no longer used
for rtt estimation.

Signed-off-by: Stephen Hemminger 
Signed-off-by: David S. Miller

[TCP]: htcp - use measured rtt

2007-07-31T09:27:59+00:00

Change HTCP to use measured RTT rather than smooth RTT.
Srtt is computed using the TCP receive timestamp
options, so it is vulnerable to hostile receivers. To avoid any problems
this might cause use the measured RTT instead.

Signed-off-by: Stephen Hemminger 
Signed-off-by: David S. Miller

[TCP]: congestion control API pass RTT in microseconds

2007-07-31T09:27:57+00:00

This patch changes the API for the callback that is done after an ACK is
received. It solves a couple of issues:

  * Some congestion controls want higher resolution value of RTT
    (controlled by TCP_CONG_RTT_SAMPLE flag). These don't really want a ktime, but
    all compute a RTT in microseconds.

  * Other congestion control could use RTT at jiffies resolution.

To keep API consistent the units should be the same for both cases, just the
resolution should change.

Signed-off-by: Stephen Hemminger 
Signed-off-by: David S. Miller

missed cong_avoid() instance

2007-07-19T23:29:55+00:00

	Removal of rtt argument in ->cong_avoid() had missed tcp_htcp.c
instance.

Signed-off-by: Al Viro 
Signed-off-by: Linus Torvalds

[TCP]: remove unused argument to cong_avoid op

2007-07-18T08:46:58+00:00

None of the existing TCP congestion controls use the rtt value pased
in the ca_ops->cong_avoid interface.  Which is lucky because seq_rtt
could have been -1 when handling a duplicate ack.

Signed-off-by: Stephen Hemminger 
Signed-off-by: David S. Miller

[TCP]: Congestion control API update.

2007-04-26T05:29:45+00:00

Do some simple changes to make congestion control API faster/cleaner.
* use ktime_t rather than timeval
* merge rtt sampling into existing ack callback
  this means one indirect call versus two per ack.
* use flags bits to store options/settings

Signed-off-by: Stephen Hemminger 
Signed-off-by: David S. Miller

[TCP]: cleanup of htcp (resend)

2007-02-12T21:34:03+00:00

Minor non-invasive cleanups:
 * white space around operators and line wrapping
 * use const
 * use __read_mostly

Signed-off-by: Stephen Hemminger 
Signed-off-by: David S. Miller

[NET] IPV4: Fix whitespace errors.

2007-02-11T07:19:39+00:00

Signed-off-by: YOSHIFUJI Hideaki 
Signed-off-by: David S. Miller

[TCP] htcp: Better packing of struct htcp.

2006-12-03T05:22:14+00:00

Based upon a patch by Joe Perches.

Signed-off-by: David S. Miller