(RFC/PATCH)
Bendik Rønning Opstad (2):
tcp: Add DPIFL thin stream detection mechanism
tcp: Add Redundant Data Bundling (RDB)
Documentation/networking/ip-sysctl.txt | 43 ++
Documentation/networking/tcp-thin.txt | 188 --
include/linux/skbuff.h | 1
etlund
Cc: Carsten Griwodz
Cc: Pål Halvorsen
Cc: Jonas Markussen
Cc: Kristian Evensen
Cc: Kenneth Klette Jonassen
Signed-off-by: Bendik Rønning Opstad
---
Documentation/networking/ip-sysctl.txt | 35 +
Documentation/networking/tcp-thin.txt | 188 --
include/linu
time (ITT).
Cc: Andreas Petlund
Cc: Carsten Griwodz
Cc: Pål Halvorsen
Cc: Jonas Markussen
Cc: Kristian Evensen
Cc: Kenneth Klette Jonassen
Signed-off-by: Bendik Rønning Opstad
---
Documentation/networking/ip-sysctl.txt | 8
include/net/netns/ipv4.h | 1 +
includ
On 21/03/16 19:54, Yuchung Cheng wrote:
> On Thu, Mar 17, 2016 at 4:26 PM, Bendik Rønning Opstad
> wrote:
>>
>>>> diff --git a/Documentation/networking/ip-sysctl.txt
>>>> b/Documentation/networking/ip-sysctl.txt
>>>> index 6a92b15..8f3f3bf 100644
&
>> diff --git a/Documentation/networking/ip-sysctl.txt
>> b/Documentation/networking/ip-sysctl.txt
>> index 6a92b15..8f3f3bf 100644
>> --- a/Documentation/networking/ip-sysctl.txt
>> +++ b/Documentation/networking/ip-sysctl.txt
>> @@ -716,6 +716,21 @@ tcp_thin_dpifl_itt_lower_bound - INTEGER
>>
On 14/03/16 22:15, Eric Dumazet wrote:
> Acked-by: Eric Dumazet
>
> Note that RDB probably should get some SNMP counters,
> so that we get an idea of how many times a loss could be repaired.
Good idea. Simply count how many times an RDB packet successfully
repaired loss? Note that this can be one
On 14/03/16 22:59, Yuchung Cheng wrote:
> OK that makes sense.
>
> I left some detailed comments on the actual patches. I would encourage
> to submit an IETF draft to gather feedback from tcpm b/c the feature
> seems portable.
Thank you for the suggestion, we appreciate the confidence. We have
had
On 03/10/2016 01:20 AM, Yuchung Cheng wrote:
> I read the paper. I think the underlying idea is neat. but the
> implementation is little heavy-weight that requires changes on fast
> path (tcp_write_xmit) and space in skb control blocks.
Yuchung, thank you for taking the time to review the patch su
_queue_loss
v1 (RFC/PATCH)
Bendik Rønning Opstad (2):
tcp: Add DPIFL thin stream detection mechanism
tcp: Add Redundant Data Bundling (RDB)
Documentation/networking/ip-sysctl.txt | 23
include/linux/skbuff.h | 1 +
include/linux/tcp.h| 3 +
as Petlund
Cc: Carsten Griwodz
Cc: Pål Halvorsen
Cc: Jonas Markussen
Cc: Kristian Evensen
Cc: Kenneth Klette Jonassen
Signed-off-by: Bendik Rønning Opstad
---
Documentation/networking/ip-sysctl.txt | 15 +++
include/linux/skbuff.h | 1 +
include/linux/tcp.h
time (ITT).
Cc: Andreas Petlund
Cc: Carsten Griwodz
Cc: Pål Halvorsen
Cc: Jonas Markussen
Cc: Kristian Evensen
Cc: Kenneth Klette Jonassen
Signed-off-by: Bendik Rønning Opstad
---
Documentation/networking/ip-sysctl.txt | 8
include/net/tcp.h
On 03/02/2016 08:52 PM, David Miller wrote:
> From: "Bendik Rønning Opstad"
> Date: Wed, 24 Feb 2016 22:12:55 +0100
>
>> +/* tcp_rdb.c */
>> +void rdb_ack_event(struct sock *sk, u32 flags);
>
> Please name globally visible symbols with a prefix of "t
as commented by Neal Cardwell.
* Cleaned up loss detection code in rdb_check_rtx_queue_loss
v1 (RFC/PATCH)
Bendik Rønning Opstad (2):
tcp: Add DPIFL thin stream detection mechanism
tcp: Add Redundant Data Bundling (RDB)
Documentation/networking/ip-sysctl.txt | 23
in
as Petlund
Cc: Carsten Griwodz
Cc: Pål Halvorsen
Cc: Jonas Markussen
Cc: Kristian Evensen
Cc: Kenneth Klette Jonassen
Signed-off-by: Bendik Rønning Opstad
---
Documentation/networking/ip-sysctl.txt | 15 +++
include/linux/skbuff.h | 1 +
include/linux/tcp.h
time (ITT).
Cc: Andreas Petlund
Cc: Carsten Griwodz
Cc: Pål Halvorsen
Cc: Jonas Markussen
Cc: Kristian Evensen
Cc: Kenneth Klette Jonassen
Signed-off-by: Bendik Rønning Opstad
---
Documentation/networking/ip-sysctl.txt | 8
include/net/tcp.h
On 02/18/2016 04:18 PM, Eric Dumazet wrote:
>>
>> -static void copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
>> +void copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
>> {
>> __copy_skb_header(new, old);
>>
>> @@ -1061,6 +1061,7 @@ static void copy_skb_hea
ted by Neal Cardwell.
* Cleaned up loss detection code in rdb_check_rtx_queue_loss
v1 (RFC/PATCH)
Bendik Rønning Opstad (2):
tcp: Add DPIFL thin stream detection mechanism
tcp: Add Redundant Data Bundling (RDB)
Documentation/networking/ip-sysctl.txt | 23
include/linux/skbuff.h
ned-off-by: Bendik Rønning Opstad
---
Documentation/networking/ip-sysctl.txt | 15 +++
include/linux/skbuff.h | 1 +
include/linux/tcp.h| 3 +-
include/net/tcp.h | 15 +++
include/uapi/linux/tcp.h | 1 +
net/cor
(ITT).
Cc: Andreas Petlund
Cc: Carsten Griwodz
Cc: Pål Halvorsen
Cc: Jonas Markussen
Cc: Kristian Evensen
Cc: Kenneth Klette Jonassen
Signed-off-by: Bendik Rønning Opstad
---
Documentation/networking/ip-sysctl.txt | 8
include/net/tcp.h | 21
Eric, thank you for the feedback!
On Wed, Feb 3, 2016 at 8:34 PM, Eric Dumazet wrote:
> On Wed, 2016-02-03 at 19:17 +0100, Bendik Rønning Opstad wrote:
>> On Tue, Feb 2, 2016 at 9:35 PM, Eric Dumazet
wrote:
>>> Really this looks very complicated.
>>
>> Can you
Sorry guys, I messed up that email by including HTML, and it got
rejected by netdev@vger.kernel.org. I'll resend it properly formatted.
Bendik
On 08/02/16 18:17, Bendik Rønning Opstad wrote:
> Eric, thank you for the feedback!
>
> On Wed, Feb 3, 2016 at 8:34 PM, Eric Dumazet wr
On Tue, Feb 2, 2016 at 9:35 PM, Eric Dumazet wrote:
> On Tue, 2016-02-02 at 20:23 +0100, Bendik Rønning Opstad wrote:
>>
>> o When packets are scheduled for transmission, RDB replaces the SKB to
>> be sent with a modified SKB containing the redundant data of
>&g
ned-off-by: Bendik Rønning Opstad
---
Documentation/networking/ip-sysctl.txt | 15 ++
include/linux/skbuff.h | 1 +
include/linux/tcp.h| 3 +-
include/net/tcp.h | 14 ++
include/uapi/linux/tcp.h | 1 +
net/cor
ted by Neal Cardwell.
* Cleaned up loss detection code in rdb_check_rtx_queue_loss
v1 (RFC/PATCH)
Bendik Rønning Opstad (2):
tcp: Add DPIFL thin stream detection mechanism
tcp: Add Redundant Data Bundling (RDB)
Documentation/networking/ip-sysctl.txt | 23 +++
include/linux/skbuff.h
(ITT).
Cc: Andreas Petlund
Cc: Carsten Griwodz
Cc: Pål Halvorsen
Cc: Jonas Markussen
Cc: Kristian Evensen
Cc: Kenneth Klette Jonassen
Signed-off-by: Bendik Rønning Opstad
---
Documentation/networking/ip-sysctl.txt | 8
include/net/tcp.h | 21
On 23/11/15 18:43, Eric Dumazet wrote:
> On Mon, 2015-11-23 at 17:26 +0100, Bendik Rønning Opstad wrote:
>
>> > +
>> > +tcp_rdb_max_skbs - INTEGER
>> > + Enable restriction on how many previous SKBs in the output queue
>> > + RDB may include data fr
(ITT).
Cc: Andreas Petlund
Cc: Carsten Griwodz
Cc: Pål Halvorsen
Cc: Jonas Markussen
Cc: Kristian Evensen
Cc: Kenneth Klette Jonassen
Signed-off-by: Bendik Rønning Opstad
---
Documentation/networking/ip-sysctl.txt | 8
include/net/tcp.h | 21
ned-off-by: Bendik Rønning Opstad
---
Documentation/networking/ip-sysctl.txt | 15 ++
include/linux/skbuff.h | 1 +
include/linux/tcp.h| 3 +-
include/net/tcp.h | 14 ++
include/uapi/linux/tcp.h | 1 +
net/cor
nonagle in do_tcp_setsockopt (TCP_RDB)
to reduce complexity as commented by Neal Cardwell.
* Cleaned up loss detection code in rdb_check_rtx_queue_loss
Bendik Rønning Opstad (2):
tcp: Add DPIFL thin stream detection mechanism
tcp: Add Redundant Data Bundling (RDB)
Documentation/networking/ip-
On 24/10/15 14:57, Eric Dumazet wrote:
> Thank you for this very high quality patch submission.
>
> Please give us a few days for proper evaluation.
>
> Thanks !
Guys, thank you very much for taking the time to evaluate this.
Since there haven't been any more feedback or comments I'll submit an
R
On Monday, November 02, 2015 09:37:54 AM David Laight wrote:
> From: Bendik Rønning Opstad
> > Sent: 23 October 2015 21:50
> > RDB is a mechanism that enables a TCP sender to bundle redundant
> > (already sent) data with TCP packets containing new data. By bundling
> &g
On Monday, October 26, 2015 02:58:03 PM Yuchung Cheng wrote:
> On Mon, Oct 26, 2015 at 2:35 PM, Andreas Petlund wrote:
> > > On 26 Oct 2015, at 15:50, Neal Cardwell wrote:
> > >
> > > On Fri, Oct 23, 2015 at 4:50 PM, Bendik Rønning Opstad
> > >
&
On Friday, October 23, 2015 02:44:14 PM Eric Dumazet wrote:
> On Fri, 2015-10-23 at 22:50 +0200, Bendik Rønning Opstad wrote:
>
> >
> > +/**
> > + * tcp_stream_is_thin_dpifl() - Tests if the stream is thin based on
> > dynamic PIF
> > + *
ned-off-by: Bendik Rønning Opstad
---
Documentation/networking/ip-sysctl.txt | 15 ++
include/linux/skbuff.h | 1 +
include/linux/tcp.h| 3 +-
include/net/tcp.h | 14 ++
include/uapi/linux/tcp.h | 1 +
net/cor
tad.pdf
[2] http://home.ifi.uio.no/bendiko/rdb_fairness_tradeoff.pdf
Bendik Rønning Opstad (2):
tcp: Add DPIFL thin stream detection mechanism
tcp: Add Redundant Data Bundling (RDB)
Documentation/networking/ip-sysctl.txt | 23 +++
include/linux/skbuff.h | 1 +
include/l
(ITT).
Cc: Andreas Petlund
Cc: Carsten Griwodz
Cc: Pål Halvorsen
Cc: Jonas Markussen
Cc: Kristian Evensen
Cc: Kenneth Klette Jonassen
Signed-off-by: Bendik Rønning Opstad
---
Documentation/networking/ip-sysctl.txt | 8
include/linux/tcp.h| 6 ++
include/net
that a connection is considered CWND limited
whenever the CWND has been filled. This is the correct behavior as
specified in RFC2861 (section 3.1).
Cc: Andreas Petlund
Cc: Carsten Griwodz
Cc: Jonas Markussen
Cc: Kenneth Klette Jonassen
Cc: Mads Johannessen
Signed-off-by: Bendik Rønning Opstad
Neal, Eric, sorry for the late replies, but keeping up with your speedy replies
is a full time job :-)
The packetdrill scripts are certainly useful to test this, so thanks for
supplying those!
On Tuesday, September 22, 2015 04:04:37 PM you wrote:
> On Tue, Sep 22, 2015 at 2:02 PM, Neal Cardwell
> Thanks for this report!
Thank you for answering!
> When you say "CWND is reduced due to loss", are you talking about RTO
> or Fast Recovery? Do you have any traces you can share that illustrate
> this issue?
The problem is not related to loss recovery, but only occurs in congestion
avoidance s
iwodz
Cc: Jonas Markussen
Cc: Kenneth Klette Jonassen
Signed-off-by: Bendik Rønning Opstad
---
net/ipv4/tcp_output.c | 5 +
1 file changed, 5 insertions(+)
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index d0ad355..7096b8b 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp
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