Lawrence Stewart ac230a79e1 Import a clean-room implementation of the Hamilton-Delay (HD) congestion control ... algorithm based on the paper "A strategy for fair coexistence of loss and delay-based congestion control algorithms" by Budzisz, Stanojevic, Shorten and Baker. It is implemented as a kernel module compatible with the recently committed modular congestion control framework. HD uses a probabilistic approach to reacting to delay-based congestion. The probability of reducing cwnd is zero when the queuing delay is very small, increasing to a maximum at a set threshold, then back down to zero again when the queuing delay is high. Normal operation keeps the queuing delay below the set threshold. However, since loss-based congestion control algorithms push the queuing delay high when probing for bandwidth, having the probability of reducing cwnd drop back to zero for high delays allows HD to compete 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		2011-02-01 06:42:46 +00:00
..
amd64	Regen for r218101.	2011-01-30 20:38:26 +00:00
arm	Introduce macro FDT_MAP_IRQ to map from an interrupt controller and	2011-01-29 20:25:20 +00:00
boot	Add kern.msgbufsize default setting to /boot/defaults/loader.conf.	2011-01-21 12:15:21 +00:00
bsm
cam	In addition to r217444 ignore also ATA status errors on DMA Auto-Activation	2011-01-26 06:57:48 +00:00
cddl	CDDL fixes for MIPS n32.	2011-01-28 06:12:59 +00:00
compat	Yet another unimplemented futex operation, print out about.	2011-01-31 06:06:23 +00:00
conf	Migrate the TX path code out of if_ath and into a separate source file.	2011-01-29 11:35:23 +00:00
contrib	Correct bogus initialization. It should be noted that this change	2011-01-14 04:24:53 +00:00
crypto	Remove DEBUG sections.	2010-11-27 15:41:44 +00:00
ddb	sysctl(9) cleanup checkpoint: amd64 GENERIC builds cleanly.	2011-01-12 19:54:19 +00:00
dev	Add TX/RX chainmask info to if_ath - this is needed for the 11n TX rate series.	2011-02-01 04:39:15 +00:00
fs	Quick fix to a comment.	2011-01-27 03:32:16 +00:00
gdb
geom	Add new user-friendly aliases for partition types for the MBR and	2011-01-28 11:13:01 +00:00
gnu	Remove prtactive variable and related printf()s in the vop_inactive	2010-11-19 21:17:34 +00:00
i386	Regen for r218101.	2011-01-30 20:38:26 +00:00
ia64	Make MSGBUF_SIZE kernel option a loader tunable kern.msgbufsize.	2011-01-21 10:26:26 +00:00
isa
kern	If more than one thread allocated sf buffers for sendfile(2), and	2011-01-28 17:37:09 +00:00
kgssapi
libkern	Add support for asterisk characters when filling in the GELI password	2010-11-14 14:12:43 +00:00
mips	Implement sf_buf using direct map (XKPHYS) in MIPS n64.	2011-01-27 14:49:22 +00:00
modules	Import a clean-room implementation of the Hamilton-Delay (HD) congestion control	2011-02-01 06:42:46 +00:00
net	Fix a LOR by dropping the global ifnet locks while allocating a new ifnet	2011-01-24 22:21:58 +00:00
net80211	Instead of always returning 0 to a scan request, indicate if there is	2011-01-30 14:05:21 +00:00
netatalk
netgraph	sysctl(9) cleanup checkpoint: amd64 GENERIC builds cleanly.	2011-01-12 19:53:39 +00:00
netinet	Import a clean-room implementation of the Hamilton-Delay (HD) congestion control	2011-02-01 06:42:46 +00:00
netinet6	Improve plausibility check in sctp_handle_sack().	2010-12-22 17:59:38 +00:00
netipsec	After some off-list discussion, revert a number of changes to the	2010-11-22 19:32:54 +00:00
netipx
netnatm
netncp
netsmb	Change some variables from int to size_t. This is more accurate since	2011-01-08 23:06:54 +00:00
nfs	Modify the experimental NFSv4 server so that it posts a SIGUSR2	2011-01-14 23:30:35 +00:00
nfsclient	Fix the nlm so that it no longer depends on the regular	2011-01-03 20:37:31 +00:00
nfsserver	ZFS might not return monotonically increasing directory offset cookies,	2010-12-28 21:12:15 +00:00
nlm	sysctl(9) cleanup checkpoint: amd64 GENERIC builds cleanly.	2011-01-12 19:54:19 +00:00
opencrypto	Let cryptosoft(4) add its pseudo-device with a specific unit number and its	2010-11-14 13:09:32 +00:00
pc98	Make MSGBUF_SIZE kernel option a loader tunable kern.msgbufsize.	2011-01-21 10:26:26 +00:00
pci	Add support for RTL8105E PCIe Fast Ethernet controller. It seems	2011-01-26 21:14:20 +00:00
powerpc	Fix boot on SMP systems after r218075 by delaying CPU binding until a	2011-01-29 23:26:28 +00:00
rpc	sysctl(9) cleanup checkpoint: amd64 GENERIC builds cleanly.	2011-01-12 19:54:19 +00:00
security	sysctl(9) cleanup checkpoint: amd64 GENERIC builds cleanly.	2011-01-12 19:54:14 +00:00
sparc64	Make MSGBUF_SIZE kernel option a loader tunable kern.msgbufsize.	2011-01-21 10:26:26 +00:00
sun4v	Make MSGBUF_SIZE kernel option a loader tunable kern.msgbufsize.	2011-01-21 10:26:26 +00:00
sys	Add new user-friendly aliases for partition types for the MBR and	2011-01-28 11:13:01 +00:00
teken	Use proper bounds checking on VPA.	2010-12-05 10:15:23 +00:00
tools
ufs	Embed a quota error message (C string) into uprintf() fmt.	2011-01-13 16:29:27 +00:00
vm	Release the free page queues lock earlier in vm_page_alloc().	2011-01-30 23:55:48 +00:00
x86	Introduce signed and unsigned version of CTLTYPE_QUAD, renaming	2011-01-19 23:00:25 +00:00
xdr
xen	Fix a few more SYSCTL_PROC() that were missing a CTLFLAG type specifier.	2011-01-19 00:57:58 +00:00
Makefile	Add lex and yacc sources to things cscope'd.	2010-11-21 03:58:11 +00:00