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fc906dd88f
freebsd-dev/sys
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Andre Oppermann fc906dd88f Introduce tcp_hostcache and remove the tcp specific metrics from 
the routing table.  Move all usage and references in the tcp stack
from the routing table metrics to the tcp hostcache.

It caches measured parameters of past tcp sessions to provide better
initial start values for following connections from or to the same
source or destination.  Depending on the network parameters to/from
the remote host this can lead to significant speedups for new tcp
connections after the first one because they inherit and shortcut
the learning curve.

tcp_hostcache is designed for multiple concurrent access in SMP
environments with high contention and is hash indexed by remote
ip address.

It removes significant locking requirements from the tcp stack with
regard to the routing table.

Reviewed by:	sam (mentor), bms
Reviewed by:	-net, -current, core@kame.net (IPv6 parts)
Approved by:	re (scottl)
2003-11-20 21:47:20 +00:00
..
alpha Widen the enable/disable helper function's argument in line with the 2003-11-17 06:10:15 +00:00
amd64 Sync with i386. 2003-11-19 18:11:27 +00:00
arm
boot Update the size of the OS string table that wasn't updated in the previous 2003-11-20 20:28:18 +00:00
cam
coda
compat Do not call VOP_GETATTR in getdents function. It does not serve any 2003-11-19 04:12:32 +00:00
conf Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 20:07:39 +00:00
contrib
crypto avoid module name conflict with opencrypto/rijndael.c. 2003-11-12 04:22:37 +00:00
ddb
dev Try all of the possible interrupts for a link device when programming 2003-11-20 21:23:49 +00:00
fs Fix vnode locking in fdesc_setattr. Lock vnode before invoking 2003-11-19 04:14:42 +00:00
geom Call class->init() an class->fini() while the class is hooked up, 2003-11-18 18:17:39 +00:00
gnu
i4b Based on an excellent suggestion from tanimura@ define I4BPRI and use it 2003-11-10 14:20:34 +00:00
i386 Add a special check for a stray IRQ 7 or IRQ 15 to see if it is actually 2003-11-19 15:40:23 +00:00
ia64 Set the ACPI processor Id in the PCPU structure so that CPU idling 2003-11-20 16:42:39 +00:00
isa Don't disable the TSC with statclock_disable. 2003-11-13 10:02:12 +00:00
isofs/cd9660
kern Fix a major faux pas of mine. I was causing 2 very bad things to 2003-11-20 15:35:48 +00:00
libkern
modules o Remove @- from the ln and change it to a -sf. This was bogus, and 2003-11-19 05:08:27 +00:00
net Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 20:07:39 +00:00
net80211 o insure the current channel is in a good state before starting an AP scan 2003-11-13 05:23:58 +00:00
netatalk Introduce a MAC label reference in 'struct inpcb', which caches 2003-11-18 00:39:07 +00:00
netatm Introduce a MAC label reference in 'struct inpcb', which caches 2003-11-18 00:39:07 +00:00
netgraph Lower the maximum ACK timeout for GRE packets from 10 to 1 second. 2003-11-18 20:43:23 +00:00
netinet Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 20:07:39 +00:00
netinet6 Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 21:47:20 +00:00
netipsec Introduce a MAC label reference in 'struct inpcb', which caches 2003-11-18 00:39:07 +00:00
netipx Introduce a MAC label reference in 'struct inpcb', which caches 2003-11-18 00:39:07 +00:00
netkey Introduce a MAC label reference in 'struct inpcb', which caches 2003-11-18 00:39:07 +00:00
netnatm Introduce a MAC label reference in 'struct inpcb', which caches 2003-11-18 00:39:07 +00:00
netncp
netsmb
nfs University of Michigan's Citi NFSv4 kernel client code. 2003-11-14 20:54:10 +00:00
nfs4client Fix compliation on sparc64. 2003-11-15 01:25:26 +00:00
nfsclient Move the declaration for "struct nfs4_fctx" out from under #ifdef KERNEL 2003-11-15 05:03:15 +00:00
nfsserver Update a comment about needing to fix NFS server credential use 2003-11-17 00:56:53 +00:00
opencrypto eliminate an unnecessary 8Kbyte bzero that was being done for each 2003-11-19 22:42:34 +00:00
pc98 Merged from sys/dev/sio/sio.c revisions 1.415 and 1.416. 2003-11-17 23:13:08 +00:00
pccard
pci Drop the driver lock around calls to if_input to avoid a LOR when 2003-11-14 19:00:32 +00:00
posix4
powerpc Widen the enable/disable helper function's argument in line with the 2003-11-17 06:10:15 +00:00
rpc Remove unneeded file. (could be repo removed as nothing ever referenced it.) 2003-11-20 04:42:50 +00:00
security Use UMA zone allocator for Biba and MLS labels rather than MALLOC(9). 2003-11-18 04:11:52 +00:00
sparc64 - Remove unnecessary synchronization from sf_buf_init(). (There is only 2003-11-16 23:40:06 +00:00
sys Introduce a MAC label reference in 'struct inpcb', which caches 2003-11-18 00:39:07 +00:00
tools
ufs Write the UFS2 superblock with a 'BAD' magic number at the beginning 2003-11-16 07:08:27 +00:00
vm - Avoid a lock-order reversal between Giant and a system map mutex that 2003-11-19 18:48:45 +00:00
Makefile