netdev - Re: [PATCH net-next v2 0/5] net: tcp: DCTCP congestion control algorithm

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Date:	Mon, 22 Sep 2014 09:28:31 -0700
From:	Stephen Hemminger <stephen@...workplumber.org>
To:	Florian Westphal <fw@...len.de>
Cc:	davem@...emloft.net, hagen@...u.net, lars@...app.com,
	eric.dumazet@...il.com, fontana@...rpeleven.org,
	hannes@...essinduktion.org, glenn.judd@...ganstanley.com,
	dborkman@...hat.com, netdev@...r.kernel.org
Subject: Re: [PATCH net-next v2 0/5] net: tcp: DCTCP congestion control
 algorithm

On Sat, 20 Sep 2014 23:29:17 +0200
Florian Westphal <fw@...len.de> wrote:

> This patch series adds support for the DataCenter TCP (DCTCP) congestion
> control algorithm. Please see individual patches for the details.
> 
> Over the last couple of months, we have resolved all outstanding issues
> from last time in the background and as agreed with Dave, we're now
> sending v2 of the set.
> 
> The last patch adds DCTCP as a congestion control module, and previous
> ones add needed infrastructure to extend the congestion control framework.
> 
> Joint work between Florian Westphal, Daniel Borkmann and Glenn Judd.
> 
> v1 -> v2:
>  - Rebased to latest net-next
>  - Addressed Eric's feedback, thanks!
>   - Update stale comment wrt. DCTCP ECN usage
>   - Don't call INET_ECN_xmit for every packet
>  - Add dctcp ss/inetdiag support to expose internal stats to userspace
> 
> Thanks!
> 
> Daniel Borkmann (2):
>   net: tcp: add flag for ca to indicate that ECN is required
>   net: tcp: add DCTCP congestion control algorithm
> 
> Florian Westphal (3):
>   net: tcp: assign tcp cong_ops when tcp sk is created
>   net: tcp: split ack slow/fast events from cwnd_event
>   net: tcp: more detailed ACK events and events for CE marked packets
> 
>  Documentation/networking/dctcp.txt |   43 ++++
>  include/net/tcp.h                  |   80 ++++++--
>  include/uapi/linux/inet_diag.h     |   13 +
>  net/ipv4/Kconfig                   |   26 ++
>  net/ipv4/Makefile                  |    1 
>  net/ipv4/tcp.c                     |    6 
>  net/ipv4/tcp_cong.c                |   46 ++--
>  net/ipv4/tcp_dctcp.c               |  344 +++++++++++++++++++++++++++++++++++++
>  net/ipv4/tcp_input.c               |   36 +++
>  net/ipv4/tcp_minisocks.c           |    5 
>  net/ipv4/tcp_output.c              |   30 ++-
>  net/ipv4/tcp_westwood.c            |   28 +--
>  12 files changed, 577 insertions(+), 81 deletions(-)

The CC ops stuff looks good.

Acked-by: Stephen Hemminger <stephen@...workplumber.org>
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