Renker [EMAIL PROTECTED]
Yes I had seen this and had worked out that variables weren't being
updated as they should be but hadn't got as far as a fix before I
stopped my coding days so much :-(
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On Jan 17, 2008 5:17 PM, maillist ifiaas [EMAIL PROTECTED] wrote:
Hi friends,,
Where can we find CCID2 (latest Linux release) test against TCP ?
There seems no measurement study to validate the TCP friendliness on
any existing implementation yet, including BSD.
Emmanuel Lochin has did some
On Jan 4, 2008 11:19 AM, Tomasz Grobelny [EMAIL PROTECTED] wrote:
I think I almost got it. Thanks a lot for the detailed explanation. But I've
got two more questions:
1. How can I control the amount of memory allowed to be allocated for the
socket send buffer? It it somehow connected with
On 12/25/07, Tomasz Grobelny [EMAIL PROTECTED] wrote:
As http://www.erg.abdn.ac.uk/ seems to be down at least since yesterday I'd
like to ask whether any mirror of dccp git tree and/or dccp patches to
mainline kernel is available. TIA,
--
Regards,
Tomasz Grobelny
Here is the announcement of
the misspelling of copyright in ccid-4
code, reported by Ian. Note that this patches just apply to ccids code, not
for the hole DCCP code.
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On 12/15/07, Gerrit Renker [EMAIL PROTECTED] wrote:
Ian McDonald has written an implementation of Faster Restart (contact Ian for
further information);
this was also in form of a subtree. It is not currently online, but if there
is interest, I am happy
to put up the patches as Faster
On 12/3/07, Arnaldo Carvalho de Melo [EMAIL PROTECTED] wrote:
WARNING: After reading some messages from Ingo Molnar on lkml I think we
should really
trim the number of lists we use for kernel development. And since I
moved
back to using mutt for reading e-mails, something
tx_packet_sent() prints pipe/cwnd already, the second printk for
pipe is redundant.
* In tx_packet_sent() the check_sanity function is called twice (at the
begin and at the end).
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).
As a result, a BUG_ON test for negative values now becomes obsolete (for
safety not removed,
but replaced with a less annoying `DCCP_BUG').
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On 11/2/07, Tommi Saviranta [EMAIL PROTECTED] wrote:
On Wed, Oct 31, 2007 at 21:31:02 -0300, Leandro wrote:
[CCID-3/4] Share TFRC sender states via tfrc_ccids
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algorithm is necessary, which will not necessarily use the same
variables as used by
the unfinished one; hence the old variables have been removed.
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On 11/1/07, Leandro [EMAIL PROTECTED] wrote:
[CCID-4] Set packet size to 1460 as per ccid-4 draft
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On 11/1/07, Leandro [EMAIL PROTECTED] wrote:
[CCID-3/4 lib] Initial lib for sharing common code between ccid-3/ccid-4
The lib is called tfrc_ccids.o
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the connection is closing anyway???
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On 10/28/07, Gerrit Renker [EMAIL PROTECTED] wrote:
[CCID2]: Fix sequence number arithmetic/comparisons
This replaces use of normal subtraction with modulo-48 subtraction.
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, this
patch disallows this possibility.
As a consequence, a Bug test for negative Ack Ratio values becomes obsolete.
Furthermore, a check against overflow (as Ack Ratio may not exceed 2 bytes,
due to RFC 4340, 11.3) has been added.
Signed-off-by: Gerrit Renker [EMAIL PROTECTED]
Acked-by: Ian
.
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More
On 10/25/07, Gerrit Renker [EMAIL PROTECTED] wrote:
/* something like (but do have a look at the paraslash sources)
do {
wrote = send (socket, (const char *) buf + bytes_written,
count - bytes_written, MSG_NOSIGNAL);
} while (wrote 0 errno ==
On 10/24/07, Arnaldo Carvalho de Melo [EMAIL PROTECTED] wrote:
Just like UDP.
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On 7/9/07, Gerrit Renker [EMAIL PROTECTED] wrote:
[DCCP]: Remove unused inline function
The function follows48(), which is a special-case of dccp_delta_seqno(),
is nowhere used in the DCCP code, thus removed by this patch.
Signed-off-by: Gerrit Renker [EMAIL PROTECTED]
Signed-off-by: Ian
the redundant assignments. Thanks to Arnaldo for
the inspiration.
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and
CLOSING
states (this is done by the subsequent patches).
Further documentation is on
http://www.erg.abdn.ac.uk/users/gerrit/dccp/docs/closing_states/
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This was signed off by me on Sep 6th but seems to have got lost so:
Signed-off-by: Ian
but this seems to have got lost so:
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On 10/12/07, Gerrit Renker [EMAIL PROTECTED] wrote:
[DCCP]: Documentation for CCID operations
This adds documentation for the ccid_operations structure.
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direct TCP counterparts.
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become
redundant.
Thanks to Ian McDonald for discussion on this.
As a further byproduct of enabling the CCIDs only after the connection has
been fully
established, several typecast-initialisations of ccid3_hc_{rx,tx}_sock can
now be eliminated:
* the CCID is loaded, so
/DCCP_ACTIVE_CLOSEREQ/g; /* server sending a CloseReq
*/
However, for pretty-printing and system logs, the name of the last state
remains
at `CLOSEREQ', for consistency.
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On 10/5/07, Gerrit Renker [EMAIL PROTECTED] wrote:
Ian -
| Hmmm I had multiple problems when the default window was 100 when
| testing in the past - from memory particularly with long RTT, low loss
| links. Try putting 100 ms delay on a 100 Mbits/link and see what
| happens...
|
|
for any NN
option, this
fact has been the reason for limiting the current use to Ack Ratio.
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More
completes). The sysctls now seed the initial feature
values and can
optionally be overridden on a per-connection basis using sockopts (as for
example in the
CCID-sockopt patches).
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On 10/3/07, Gerrit Renker [EMAIL PROTECTED] wrote:
Reworked patch, updated as requested:
* removed `typedef const'
* made all initialisation explicit, using field initialisers
This increases the space somewhat, but indeed much better readability.
* Ian I have added your Acked-by as
, however).
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, the only states visible to CCIDs now are OPEN/PARTOPEN, and the
closing
states.
This allows to remove tests which were previously necessary to protect
against referencing
a socket in the listening state (in CCID3), but which now have become
redundant.
Thanks to Ian McDonald for discussion
dccp_feat_activate_values() (which takes care of all the feature
activation).
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--- a/include/linux/dccp.h
+++ b/include/linux/dccp.h
@@ -372,7 +372,6 @@ static inline unsigned int dccp_hdr_len(
#define
are not supported) are advertised for robustness.
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of CCID or
feature negotiation enables NDP count, this will then be updated via the NDP
activation handler.
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, and options are provided.
A new macro was defined to not always have the function name in the output
line. I have refrained
from naming it dccp_pr_debug_dog ...
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On 10/4/07, Gerrit Renker [EMAIL PROTECTED] wrote:
[DCCP]: Implement both feature-local and feature-remote Sequence Window
feature
This adds full support for both local/remote Sequence Window feature, from
which the
* sequence-number-validity (W) and
* acknowledgment-number-validity
Cookie, maps into Invalid request descriptor (EBADR);
* Code 11, Aggression Penalty, maps into Quota exceeded (EDQUOT)
which makes sense in terms of using more than the `fair share' of
bandwidth.
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(I have seen Arnaldo's/your later correspondence and happy enough that
you'll resolve that)
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of CCID2.
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#ccid_dependencies
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to explain
the rationale behind this as I'm probably missing something.
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(Sending acked bys these days as much less time so giving quick
reviews. I'm working through all the new group of patches from oldest
first. I've lost track of any old ones I haven't
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for this connection.
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Nice to see reduction in data size of a structure and also simplifying
logic because of it.
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in some cases.
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of this facility, the remaining patches of this patch set are
needed, which track dependencies and activate negotiated feature values.
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But see one comment below.
+ BUILD_BUG_ON(sizeof(u8) != 1);
The whole point
On 9/30/07, Gerrit Renker [EMAIL PROTECTED] wrote:
[DCCP]: Convert Reset code into socket error number
This adds support for converting the 11 currently defined Reset codes into
system
error numbers, which are stored in sk_err for further interpretation.
This makes the externally visible
On 10/2/07, Arnaldo Carvalho de Melo [EMAIL PROTECTED] wrote:
He used a designated initializer, i.e. he said at which index in the
array it the value is to be set. So it really doesn't matter the order.
And when checking if the code was within the valid range he tested
against the last entry
to be used both by general option processing and
feature negotiation code, hence declarations have been put into feat.h.
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-Value options whose length is determined by
an u8
field provide Value space for at most 255 - 2 = 253 bytes due to the
Type/Length fields.
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(once one change is put in)
---
net/dccp/ackvec.c |8
.
This replaces the earlier insertion routine from options.c
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Once a couple of things commented on/fixed.
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---
net/dccp/dccp.h|2 +
net/dccp/feat.c| 57
on
DataAck
packets (5.8).
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also removes the old code for processing SP/NN Change options, since
new code to process these is mostly there already; related references have
been
commented out.
The code for processing Change options follows in the next patch.
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,
this patch extends the capabilities by adding Reset information when
processing
erroneous options.
This support will be made use of by the next two patches which process Change/
Confirm feature-negotiation options.
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Window
feature has 48 bit).
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with their feature location, their default value, and type.
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, but it
would be better to phase it out and replace it by proper socket
options (setsockopt code for the CCID follows in a later patch).
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a FIXME regarding the congestion control initialisation.
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More
)
classifies empty Confirm options as invalid - this needs to be resolved in
a separate patch.
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On 9/27/07, Gerrit Renker [EMAIL PROTECTED] wrote:
* but there is already dccp_tfrc_lib which hosts a major number of functions
used by CCID3/4
* hence I think that you could proceed by
- add a CCID-3 specific object file to dccp_tfrc_lib-y in
net/dccp/ccids/lib/Makefile
On 9/27/07, Tommi Saviranta [EMAIL PROTECTED] wrote:
On Mon, Sep 24, 2007 at 15:15:57 -0300, ツ Leandro Sales wrote:
- Identify and provide common code between ccid-4 and ccid-3.
I'm probably little too much of a need-get-my-hands-dirty kind of guy,
but I think this part usually works out the
On 9/25/07, Gerrit Renker [EMAIL PROTECTED] wrote:
Ian McDonald wrote:
| + * 16-20ms to match the typical multimedia inter-frame interval
| + * 100ms as a reasonable compromise [default]
| + * 1000ms corresponds to the lower TCP RTO bound (RFC 2988, 2.4)
| +
|
| But Linux actually
from cwnd and appears in assignments and comparisons,
the type of ssthresh was changed to matched that of cwnd.
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On 9/26/07, Gerrit Renker [EMAIL PROTECTED] wrote:
[DCCP]: Add FIXME for send_delayed_ack
This adds a FIXME to signal that the function dccp_send_delayed_ack is nowhere
used in the entire DCCP/CCID code.
Using a delayed Ack timer is suggested in 11.3 of RFC 4340, but it has also
rather
in these fields follows in subsequent patches, it is
primarily used for reporting option-processing and feature-negotiation
errors.
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served, so I left it in.
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Haven't studied in great depth but looks right.
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codes would be used in
dccp_send_reset() instead, since they all relate to an established DCCP
connection:
* Code 1, Closed;
* Code 2, Aborted;
* Code 11, Aggression Penalty (12.3).
Signed-off-by: Gerrit Renker [EMAIL PROTECTED]
Acked-by: Ian McDonald [EMAIL PROTECTED]
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Web1: http
setup, make use
of this facility.
Signed-off-by: Gerrit Renker [EMAIL PROTECTED]
Signed-off-by: Ian McDonald [EMAIL PROTECTED]
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.
Signed-off-by: Gerrit Renker [EMAIL PROTECTED]
Signed-off-by: Ian McDonald [EMAIL PROTECTED]
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.
Signed-off-by: Gerrit Renker [EMAIL PROTECTED]
Signed-off-by: Ian McDonald [EMAIL PROTECTED]
Once the tse pointer issue is shifted - I noticed this in this patch,
but not original. I must only be half as smart as Arnaldo ;-)
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Blog
On 9/21/07, Gerrit Renker [EMAIL PROTECTED] wrote:
I am happy to announce that feature negotiation now works, which resolves the
above problem. Below is
a log dump which shows the successful negotiation of CCID and dependent
features during the handshake.
Exchanging NN features during an
On 9/20/07, Tommi Saviranta [EMAIL PROTECTED] wrote:
Adds Kconfig-entries, modified Makefile, and adds DCCP_CCID enum for for
CCID 4. Kconfig-entries are derived from CCID 3, and are probably
invalid.
Signed-off-by: Tommi Saviranta [EMAIL PROTECTED]
+config IP_DCCP_CCID4
+ tristate
On 9/21/07, ツ Leandro Sales [EMAIL PROTECTED] wrote:
Signed-off-by: Leandro Sales [EMAIL PROTECTED]
Organize the help for ccid-4 menu with a more apropriate description,
the correct
URL for CCID-4 draft and remove the code duplication for TFRC by using
depends on CCID3 || CCID4 in the
On 9/20/07, Tommi Saviranta [EMAIL PROTECTED] wrote:
(Yup, it is less than 40 KiB.)
As discussed previously the CCID4 should share CCID3 code rather than
copy it. This is fine for experimental purposes though - it can't be
merged into mainline kernel as is though. You will need to track
[EMAIL PROTECTED]
Signed-off-by: Ian McDonald [EMAIL PROTECTED]
(although I think there should be just one merged patch for this)
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On 9/20/07, Tommi Saviranta [EMAIL PROTECTED] wrote:
+ /* TFRC-SP enforces a minimum interval of 10 milliseconds */
+ hctx-ccid4hctx_t_ipi =
+ max_t(u32, scaled_div32(((u64)hctx-ccid4hctx_s) 6,
+ hctx-ccid4hctx_x),
+
On 9/20/07, Tommi Saviranta [EMAIL PROTECTED] wrote:
+/** ccid4_first_li - Implements [RFC 3448, 6.3.1], with s = 1460 [TFRC-SP]
Put RFC4828 here instead of TFRC-SP.
Otherwise looks fine.
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To
On 9/13/07, Gerrit Renker [EMAIL PROTECTED] wrote:
Quoting Ian McDonald:
| On 9/13/07, Gerrit Renker [EMAIL PROTECTED] wrote:
| [DCCP]: Fix Request/Response RTT sampling
|
Thanks for looking at this, but I won't/can't use the sign-off, since
I merged this patch with the one which had
On 9/13/07, Gerrit Renker [EMAIL PROTECTED] wrote:
[DCCP]: Sequence number wrap-around when sending reset
This replaces normal addition with mod-48 addition so that
sequence number wraparound is respected.
Signed-off-by: Gerrit Renker [EMAIL PROTECTED]
Signed-off-by: Ian McDonald [EMAIL
simplified.
Signed-off-by: Gerrit Renker [EMAIL PROTECTED]
Signed-off-by: Ian McDonald [EMAIL PROTECTED]
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On 9/13/07, Gerrit Renker [EMAIL PROTECTED] wrote:
[DCCP]: DCCP's passive close needs to match TCP's half-close
Signed-off-by: Gerrit Renker [EMAIL PROTECTED]
Signed-off-by: Ian McDonald [EMAIL PROTECTED]
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On 9/13/07, Gerrit Renker [EMAIL PROTECTED] wrote:
[DCCP]: Fix Request/Response RTT sampling
Signed-off-by: Gerrit Renker [EMAIL PROTECTED]
Signed-off-by: Ian McDonald [EMAIL PROTECTED]
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.ietf.org/proceedings/07jul/slides/dccp-6.pdf
Most notably we don't do pings.
Signed-off-by: Ian McDonald [EMAIL PROTECTED]
---
diff --git a/net/dccp/ccids/ccid3.c b/net/dccp/ccids/ccid3.c
index ea9e1f9..1abe365 100644
--- a/net/dccp/ccids/ccid3.c
+++ b/net/dccp/ccids/ccid3.c
@@ -121,8 +121,32
For faster restart and TFRCbis we need to pass socket options down to
CCIDs. Add framework in for this.
Shift check for LISTEN as part of this, as suggested by Gerrit Renker.
Signed-off-by: Ian McDonald [EMAIL PROTECTED]
---
diff --git a/net/dccp/ccid.h b/net/dccp/ccid.h
index c65cb24..0067526
In this patch we introduce the extension TFRC faster restart.
Signed-off-by: Ian McDonald [EMAIL PROTECTED]
---
diff --git a/net/dccp/ccids/ccid3.h b/net/dccp/ccids/ccid3.h
index 5a23b62..6de73f7 100644
--- a/net/dccp/ccids/ccid3.h
+++ b/net/dccp/ccids/ccid3.h
@@ -116,6 +116,7 @@ struct
This adds new helper functions to check if faster restart is turned on.
Signed-off-by: Ian McDonald [EMAIL PROTECTED]
---
diff --git a/net/dccp/ccids/ccid3.h b/net/dccp/ccids/ccid3.h
index c77c8fb..7edbf70 100644
--- a/net/dccp/ccids/ccid3.h
+++ b/net/dccp/ccids/ccid3.h
@@ -182,4 +182,11
Set up options for enabling TFRC options. Also add variables for faster
restart.
Signed-off-by: Ian McDonald [EMAIL PROTECTED]
---
diff --git a/include/linux/dccp.h b/include/linux/dccp.h
index 1f696f9..17a8016 100644
--- a/include/linux/dccp.h
+++ b/include/linux/dccp.h
@@ -209,7 +209,9
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