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319182 |
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30-May-2017 |
ngie |
MFC r314651,r318439,r318440:
r314651:
sys/modules: normalize .CURDIR-relative paths to SRCTOP
This simplifies make output/logic
Tested with: `cd sys/modules; make ALL_MODULES=` on amd64
r318439:
Normalize .PATH on SRCTOP
This will help Jenkins dedupe 9 warnings between the static build and the module build of ipsec(4).
Missed in SRCTOP conversion in r314651.
MFC with: r314651
r318440:
Normalize SYSDIR on SRCTOP instead of .CURDIR
This is being done to simplify pathing for CFLAGS and source files.
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218155 |
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01-Feb-2011 |
lstewart |
Import an implementation of the CAIA-Hamilton-Delay (CHD) congestion control algorithm described in the paper "Improved coexistence and loss tolerance for delay based TCP congestion control" by Hayes and Armitage. It is implemented as a kernel module compatible with the recently committed modular congestion control framework.
CHD enhances the approach taken by the Hamilton-Delay (HD) algorithm to provide tolerance to non-congestion related packet loss and improvements to coexistence with loss-based congestion control algorithms. A key idea in improving coexistence with loss-based congestion control algorithms is the use of a shadow window, which attempts to track how NewReno's congestion window (cwnd) would evolve. At the next packet loss congestion event, CHD uses the shadow window to correct cwnd in a way that reduces the amount of unfairness CHD experiences when competing with loss-based algorithms.
In collaboration with: David Hayes <dahayes at swin edu au> and Grenville Armitage <garmitage at swin edu au> Sponsored by: FreeBSD Foundation Reviewed by: bz and others along the way MFC after: 3 months
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