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| author | Florian Westphal <fw@strlen.de> | 2014-09-27 00:37:34 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-09-29 08:13:10 +0400 |
| commit | 7354c8c389d18719dd71cc810da70b0921d66694 (patch) | |
| tree | 776fa6ce824557d0c8bbf4271ad3b08a4832a66f /Documentation/networking | |
| parent | 30e502a34b8b21fae2c789da102bd9f6e99fef83 (diff) | |
| download | linux-7354c8c389d18719dd71cc810da70b0921d66694.tar.xz | |
net: tcp: split ack slow/fast events from cwnd_event
The congestion control ops "cwnd_event" currently supports
CA_EVENT_FAST_ACK and CA_EVENT_SLOW_ACK events (among others).
Both FAST and SLOW_ACK are only used by Westwood congestion
control algorithm.
This removes both flags from cwnd_event and adds a new
in_ack_event callback for this. The goal is to be able to
provide more detailed information about ACKs, such as whether
ECE flag was set, or whether the ACK resulted in a window
update.
It is required for DataCenter TCP (DCTCP) congestion control
algorithm as it makes a different choice depending on ECE being
set or not.
Joint work with Daniel Borkmann and Glenn Judd.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Glenn Judd <glenn.judd@morganstanley.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/networking')
0 files changed, 0 insertions, 0 deletions