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| author |   Gerrit Renker <gerrit@erg.abdn.ac.uk> | 2007-09-25 22:39:16 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@sunset.davemloft.net> | 2007-10-10 16:52:34 -0700 |
| commit | aa97efd97acefb7d3dcd864adb878c7ce34061b3 (patch) | |
| tree | 1cad4e0193364c6b601c1ebc2ec8bc4aa8f600ae /net/dccp/input.c | |
| parent | [MAC80211]: rename ieee80211_cfg.h to cfg.h (diff) | |
| download | linux-dev-aa97efd97acefb7d3dcd864adb878c7ce34061b3.tar.xz linux-dev-aa97efd97acefb7d3dcd864adb878c7ce34061b3.zip | |
[DCCP]: Reuse ktime_get_real() calls again
This patch reduces the number of timestamps taken in the receive path
for each packet.
The ccid3_hc_tx_update_x() routine is called in
* the receive path for each CCID3-controlled packet
* for the nofeedback timer (if no feedback arrives during 4 RTT)
Currently, when there is no loss, each packet gets timestamped twice.
The patch resolves this by recycling the first timestamp taken on packet
reception for RTT sampling.
When the no_feedback_timer() is called, then the timestamp argument is
simply set to NULL - so that ccid3_hc_tx_update_x() takes care of the logic.
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dccp/input.c')
0 files changed, 0 insertions, 0 deletions