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freebsd-dev/sys/netinet
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Andre Oppermann 97d8d152c2 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 20:07:39 +00:00
..
libalias Grrr...add the Skinny alias code forgotten in the last commit. 2003-09-23 07:42:33 +00:00
accf_data.c
accf_http.c
icmp6.h revert following unwanted changes: 2003-10-25 10:57:08 +00:00
icmp_var.h
if_atm.c replace explicit changes to rt_refcnt by RT_ADDREF and RT_REMREF 2003-11-08 23:36:32 +00:00
if_atm.h
if_ether.c replace explicit changes to rt_refcnt by RT_ADDREF and RT_REMREF 2003-11-08 23:36:32 +00:00
if_ether.h Update netisr handling; Each SWI now registers its queue, and all queue 2003-03-04 23:19:55 +00:00
igmp_var.h
igmp.c Remove redundant initialization of rti; SLIST_FOREACH does that for 2003-08-28 22:15:05 +00:00
igmp.h
in_cksum.c
in_gif.c add ECN support in layer-3. 2003-10-29 15:07:04 +00:00
in_gif.h - fix typo in comment. 2003-10-07 17:46:18 +00:00
in_pcb.c Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 20:07:39 +00:00
in_pcb.h Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 20:07:39 +00:00
in_proto.c divert socket fixups: 2003-11-08 23:09:42 +00:00
in_rmx.c Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 20:07:39 +00:00
in_systm.h
in_var.h Introduce ip_fastforward and remove ip_flow. 2003-11-14 21:02:22 +00:00
in.c Correct rev 1.56 which (incorrectly) reversed the test used to 2003-11-03 03:22:39 +00:00
in.h correct namespace pollution. 2003-10-25 09:37:10 +00:00
ip6.h revert following unwanted changes: 2003-10-25 10:57:08 +00:00
ip_divert.c Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 20:07:39 +00:00
ip_dummynet.c replace explicit changes to rt_refcnt by RT_ADDREF and RT_REMREF 2003-11-08 23:36:32 +00:00
ip_dummynet.h place some kernel-specific data structures under #ifdef _KERNEL 2003-10-03 20:58:56 +00:00
ip_ecn.c add ECN support in layer-3. 2003-10-29 15:07:04 +00:00
ip_ecn.h add ECN support in layer-3. 2003-10-29 15:07:04 +00:00
ip_encap.c Remove unused variables. 2003-06-01 09:20:38 +00:00
ip_encap.h
ip_fastfwd.c Remove RTF_PRCLONING from routing table and adjust users of it 2003-11-20 19:47:31 +00:00
ip_fw2.c Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 20:07:39 +00:00
ip_fw.h Replace the if_name and if_unit members of struct ifnet with new members 2003-10-31 18:32:15 +00:00
ip_gre.c Finish driving a stake through the heart of netns and the associated 2003-03-05 19:24:24 +00:00
ip_gre.h
ip_icmp.c Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 20:07:39 +00:00
ip_icmp.h Add comments regarding the ICMP timestamp fields. 2003-03-21 15:28:10 +00:00
ip_id.c MFp4: reminder that random id code is not reentrant 2003-11-07 23:31:29 +00:00
ip_input.c Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 20:07:39 +00:00
ip_mroute.c the sbappendaddr call in socket_send must be protected by Giant 2003-11-08 22:51:18 +00:00
ip_mroute.h 1. Basic PIM kernel support 2003-08-07 18:16:59 +00:00
ip_output.c Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 20:07:39 +00:00
ip_var.h Make ipstealth global as we need it in ip_fastforward too. 2003-11-15 01:45:56 +00:00
ip.h add ECN support in layer-3. 2003-10-29 15:07:04 +00:00
ipprotosw.h
pim_var.h New PIM header files. 2003-08-07 18:17:43 +00:00
pim.h New PIM header files. 2003-08-07 18:17:43 +00:00
raw_ip.c Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 20:07:39 +00:00
tcp_debug.c
tcp_debug.h
tcp_fsm.h
tcp_hostcache.c Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 20:07:39 +00:00
tcp_input.c Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 20:07:39 +00:00
tcp_output.c Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 20:07:39 +00:00
tcp_reass.c Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 20:07:39 +00:00
tcp_seq.h Unify the "send high" and "recover" variables as specified in the 2003-07-15 21:49:53 +00:00
tcp_subr.c Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 20:07:39 +00:00
tcp_syncache.c Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 20:07:39 +00:00
tcp_timer.c Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 20:07:39 +00:00
tcp_timer.h Remove a panic(); if the zone allocator can't provide more timewait 2003-03-08 22:06:20 +00:00
tcp_timewait.c Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 20:07:39 +00:00
tcp_usrreq.c Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 20:07:39 +00:00
tcp_var.h Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 20:07:39 +00:00
tcp.h
tcpip.h
udp_usrreq.c Introduce tcp_hostcache and remove the tcp specific metrics from 2003-11-20 20:07:39 +00:00
udp_var.h
udp.h