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ee24d3b840
freebsd-dev/sys
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Lawrence Stewart ee24d3b840 The TCP PAWS fix for kernels with fast tick rates (r231767) changed the TCP 
timestamp related stack variables to reference ms directly instead of ticks.
The h_ertt(4) Khelp module relies on TCP timestamp information in order to
calculate its enhanced RTT estimates, but was not updated as part of r231767.

Consequently, h_ertt has not been calculating correct RTT estimates since
r231767 was comitted, which in turn broke all delay-based congestion control
algorithms because they rely on the h_ertt RTT estimates.

Fix the breakage by switching h_ertt to use tcp_ts_getticks() in place of all
previous uses of the ticks variable. This ensures all timestamp related
variables in h_ertt use the same units as the TCP stack and therefore results in
meaningful comparisons and RTT estimate calculations.

Reported & tested by:	Naeem Khademi (naeemk at ifi uio no)
Discussed with:	bz
MFC after:	3 days
2012-08-17 01:49:51 +00:00
..
amd64 As discussed on -current, remove the hardcoded default maxswzone. 2012-08-14 17:01:21 +00:00
arm Preliminary Embest ATEB9200 support. 2012-08-16 05:03:59 +00:00
boot Add comment why the code has been disabled. 2012-08-16 06:45:58 +00:00
bsm
cam 1. Remove SEN support. I doubt there are any working examples 2012-08-12 17:01:07 +00:00
cddl Streamline use of cdevpriv and correct some corner cases. 2012-08-15 16:19:39 +00:00
compat Regenerate. 2012-08-15 15:18:20 +00:00
conf Merge ACPICA 20120816. 2012-08-16 20:54:52 +00:00
contrib Merge ACPICA 20120816. 2012-08-16 20:54:52 +00:00
crypto Add support for the extended FPU states on amd64, both for native 2012-01-21 17:45:27 +00:00
ddb Update the ddb and gdb backends for the new 'trace_thread' hook. 2012-04-12 21:34:58 +00:00
dev Support for TCP DDP (Direct Data Placement) in the T4 TOE module. 2012-08-17 00:49:29 +00:00
fs Streamline use of cdevpriv and correct some corner cases. 2012-08-15 16:19:39 +00:00
gdb Update the ddb and gdb backends for the new 'trace_thread' hook. 2012-04-12 21:34:58 +00:00
geom Always initialize sc_ekey, because as of r238116 it is always used. 2012-08-10 18:43:29 +00:00
gnu/fs Just like the other file systems found in /sys/fs, g_vfs_open() 2012-08-01 23:05:57 +00:00
i386 As discussed on -current, remove the hardcoded default maxswzone. 2012-08-14 17:01:21 +00:00
ia64 Add locking for sscdisk(4) and mark it MPSAFE. Since this driver just 2012-08-16 17:17:08 +00:00
isa - There's no need to overwrite the default device method with the default 2011-11-22 21:28:20 +00:00
kern Remove D_NEEDGIANT from dead_devsw. biofinish() (and thus dead_strategy) 2012-08-16 18:04:33 +00:00
kgssapi
libkern Fix unloading of libiconv module. 2012-06-11 17:42:39 +00:00
mips Eliminate an unused parameter from init_pte_prot(). 2012-08-16 04:41:15 +00:00
modules Support for TCP DDP (Direct Data Placement) in the T4 TOE module. 2012-08-17 00:49:29 +00:00
net After the PHYS_TO_VM_PAGE() function was de-inlined, the main reason 2012-08-05 14:11:42 +00:00
net80211 Fix an incorrect comparison. 2012-08-16 00:53:23 +00:00
netatalk Fix typos 2012-02-28 15:07:05 +00:00
netgraph Remove duplicate check. 2012-08-03 12:55:31 +00:00
netinet The TCP PAWS fix for kernels with fast tick rates (r231767) changed the TCP 2012-08-17 01:49:51 +00:00
netinet6 Fix races between in_lltable_prefix_free(), lla_lookup(), 2012-08-02 13:57:49 +00:00
netipsec Fix a bug introduced in r221129 that leads to a panic wen using bundled 2012-07-22 17:46:05 +00:00
netipx Convert all users of IF_ADDR_LOCK to use new locking macros that specify 2012-01-05 19:00:36 +00:00
netnatm
netncp Add characters mapping for codepages used in Germany. 2012-06-01 03:59:08 +00:00
netsmb Change a duplicated check to clarify that we really want to set a 2012-07-10 21:02:59 +00:00
nfs - Typo fix 2012-08-16 19:22:34 +00:00
nfsclient Do not leave invalid pages in the object after the short read for a 2012-08-14 11:45:47 +00:00
nfsserver Honor NFSv3 commit call (RFC 1813, Section 3.3.21) where when count is 0, 2011-12-15 02:26:53 +00:00
nlm Fix grammar. 2012-08-16 13:01:56 +00:00
ofed Streamline use of cdevpriv and correct some corner cases. 2012-08-15 16:19:39 +00:00
opencrypto
pc98 Partially revert r217515 so that the mem_range_softc variable is always 2012-07-09 20:42:08 +00:00
pci intpm: add ATI IXP400 pci id 2012-04-16 10:33:46 +00:00
powerpc Add backlight support for nVidia-based PowerBooks/iBooks/iMacs. 2012-08-04 03:05:01 +00:00
rpc
security Check vplabel for NULL before dereferencing it. Fixes a panic 2012-05-03 15:51:34 +00:00
sparc64 Merge r236494 from x86: 2012-08-05 22:03:13 +00:00
sys Eliminate some unused declarations. 2012-08-15 22:25:57 +00:00
teken
tools Make vnode_if.awk parse vnode operations with underscores, like VOP_FOO_BAR. 2012-02-21 19:35:59 +00:00
ufs After the PHYS_TO_VM_PAGE() function was de-inlined, the main reason 2012-08-05 14:11:42 +00:00
vm - When running out of swzone, instead of spewing an error message every 2012-08-16 08:29:49 +00:00
x86 Merge ACPICA 20120816. 2012-08-16 20:54:52 +00:00
xdr
xen blkif interface comment cleanups. No functional changes 2012-02-29 17:47:01 +00:00
Makefile Add sys/ofed to the 'make cscope' target. 2012-03-20 18:05:15 +00:00