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| author | Gerrit Renker <gerrit@erg.abdn.ac.uk> | 2008-09-04 07:30:19 +0200 |
|---|---|---|
| committer | Gerrit Renker <gerrit@erg.abdn.ac.uk> | 2008-09-04 07:45:41 +0200 |
| commit | 2b81143aa3505e2460b24b357996c2f21840ea58 (patch) | |
| tree | 37f752fb85c563f965655cec834bb289fd831137 /net/dccp/ccids/ccid3.h | |
| parent | 2f3e3bbad917c426d3aba03a535809e5699de156 (diff) | |
| download | talos-obmc-linux-2b81143aa3505e2460b24b357996c2f21840ea58.tar.gz talos-obmc-linux-2b81143aa3505e2460b24b357996c2f21840ea58.zip | |
dccp ccid-3: Always perform receiver RTT sampling
This updates the CCID-3 receiver in part with regard to errata 610 and 611
(http://www.rfc-editor.org/errata_list.php), which change RFC 4342 to use the
Receive Rate as specified in rfc3448bis, requiring to constantly sample the
RTT (or use a sender RTT).
Doing this requires reusing the RX history structure after dealing with a loss.
The patch does not resolve how to compute X_recv if the interval is less
than 1 RTT. A FIXME has been added (and is resolved in subsequent patch).
Furthermore, since this is all TFRC-based functionality, the RTT estimation
is now also performed by the dccp_tfrc_lib module. This further simplifies
the CCID-3 code.
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Diffstat (limited to 'net/dccp/ccids/ccid3.h')
| -rw-r--r-- | net/dccp/ccids/ccid3.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/net/dccp/ccids/ccid3.h b/net/dccp/ccids/ccid3.h index 72e110a1100f..342235c57bf3 100644 --- a/net/dccp/ccids/ccid3.h +++ b/net/dccp/ccids/ccid3.h @@ -127,7 +127,6 @@ enum ccid3_fback_type { * @last_counter - Tracks window counter (RFC 4342, 8.1) * @feedback - The type of the feedback last sent * @x_recv - Receiver estimate of send rate (RFC 3448, sec. 4.3) - * @rtt - Receiver estimate of RTT * @tstamp_last_feedback - Time at which last feedback was sent * @hist - Packet history (loss detection + RTT sampling) * @li_hist - Loss Interval database @@ -137,7 +136,6 @@ struct ccid3_hc_rx_sock { u8 last_counter:4; enum ccid3_fback_type feedback:4; u32 x_recv; - u32 rtt; ktime_t tstamp_last_feedback; struct tfrc_rx_hist hist; struct tfrc_loss_hist li_hist; |
