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authorFlorian Westphal <fw@strlen.de>2014-09-26 22:37:34 +0200
committerDavid S. Miller <davem@davemloft.net>2014-09-29 00:13:10 -0400
commit7354c8c389d18719dd71cc810da70b0921d66694 (patch)
tree776fa6ce824557d0c8bbf4271ad3b08a4832a66f /net/ipv4/Kconfig
parentnet: tcp: add flag for ca to indicate that ECN is required (diff)
downloadlinux-dev-7354c8c389d18719dd71cc810da70b0921d66694.tar.xz
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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 'net/ipv4/Kconfig')
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