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joerg eb04733c4e Introduce new helper functions to abstract the route caching. 
rtcache_init and rtcache_init_noclone lookup ro_dst and store
the result in ro_rt, taking care of the reference counting and
calling the domain specific route cache.
rtcache_free checks if a route was cashed and frees the reference.
rtcache_copy copies ro_dst of the given struct route, checking that
enough space is available and incrementing the reference count of the
cached rtentry if necessary.
rtcache_check validates that the cached route is still up. If it isn't,
it tries to look it up again. Afterwards ro_rt is either a valid again
or NULL.
rtcache_copy is used internally.

Adjust to callers of rtalloc/rtflush in the tree to check the sanity of
ro_dst first (if necessary). If it doesn't fit the expectations, free
the cache, otherwise check if the cached route is still valid. After
that combination, a single check for ro_rt == NULL is enough to decide
whether a new lookup needs to be done with a different ro_dst.
Make the route checking in gre stricter by repeating the loop check
after revalidation.
Remove some unused RADIX_MPATH code in in6_src.c. The logic is slightly
changed here to first validate the route and check RTF_GATEWAY
afterwards. This is sementically equivalent though.
etherip doesn't need sc_route_expire similiar to the gif changes from
dyoung@ earlier.

Based on the earlier patch from dyoung@, reviewed and discussed with
him.
 		2006-12-15 21:18:52 +00:00
..
agr make agr headers include lock.h and queue.h by themselves. 2006-10-29 22:14:14 +00:00
Makefile New EtherIP driver based on tap(4) and gif(4) by Hans Rosenfeld. 2006-11-23 04:07:07 +00:00
bpf.c __unused removal on arguments; approved by core. 2006-11-16 01:32:37 +00:00
bpf.h
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bpf_filter.c It is not sufficient for MINDEX to just 'return 0' if the MINDEX macro 2006-10-04 20:47:43 +00:00
bpfdesc.h
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bridgestp.c __unused removal on arguments; approved by core. 2006-11-16 01:32:37 +00:00
bsd-comp.c __unused removal on arguments; approved by core. 2006-11-16 01:32:37 +00:00
dlt.h add missing DLTs from the libpcap-0.9.4 distribution 2006-02-27 14:22:26 +00:00
ethertypes.h
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files.pf
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if.c Fix spelling, s/straglers/stragglers/. 2006-12-03 19:17:41 +00:00
if.h implement ipv6 TSO. 2006-11-23 19:41:58 +00:00
if_arc.h
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if_arcsubr.c merge FreeBSD timecounters from branch simonb-timecounters 2006-06-07 22:33:33 +00:00
if_arp.h
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if_atm.h
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if_atmsubr.c
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if_bridge.c New EtherIP driver based on tap(4) and gif(4) by Hans Rosenfeld. 2006-11-23 04:07:07 +00:00
if_bridgevar.h
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if_dl.h
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if_eco.h
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if_ecosubr.c merge FreeBSD timecounters from branch simonb-timecounters 2006-06-07 22:33:33 +00:00
if_ether.h The change I committed to etherip was wrong. ether_snprintf doesn't make 2006-11-24 01:04:30 +00:00
if_etherip.c Introduce new helper functions to abstract the route caching. 2006-12-15 21:18:52 +00:00
if_etherip.h Introduce new helper functions to abstract the route caching. 2006-12-15 21:18:52 +00:00
if_ethersubr.c explain XID constants, and fix a wrong one 2006-12-10 11:39:43 +00:00
if_faith.c __unused removal on arguments; approved by core. 2006-11-16 01:32:37 +00:00
if_faith.h
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if_fddi.h
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if_fddisubr.c Explain llc XID magic constants, correcting the XID header format tag. 2006-12-10 14:21:32 +00:00
if_gif.c New EtherIP driver based on tap(4) and gif(4) by Hans Rosenfeld. 2006-11-23 04:07:07 +00:00
if_gif.h Here are various changes designed to protect against bad IPv4 2006-12-09 05:33:04 +00:00
if_gre.c Introduce new helper functions to abstract the route caching. 2006-12-15 21:18:52 +00:00
if_gre.h Cosmetic: s/g_proto/sc_proto/. 2006-11-16 22:32:38 +00:00
if_hippi.h
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if_hippisubr.c __unused removal on arguments; approved by core. 2006-11-16 01:32:37 +00:00
if_ieee1394.h
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if_ieee1394subr.c merge FreeBSD timecounters from branch simonb-timecounters 2006-06-07 22:33:33 +00:00
if_llc.h define some more magic LLC constants 2006-12-10 11:35:36 +00:00
if_loop.c __unused removal on arguments; approved by core. 2006-11-16 01:32:37 +00:00
if_media.c
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if_media.h Add IFM_10G_SR and IFM_10G_CX4, to keep in sync with FreeBSD. 2006-06-03 12:43:28 +00:00
if_ppp.c __unused removal on arguments; approved by core. 2006-11-16 01:32:37 +00:00
if_ppp.h
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if_pppoe.c __unused removal on arguments; approved by core. 2006-11-16 01:32:37 +00:00
if_pppoe.h
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if_pppvar.h Use the LWP cached credentials where sane. 2006-07-23 22:06:03 +00:00
if_sl.c __unused removal on arguments; approved by core. 2006-11-16 01:32:37 +00:00
if_slvar.h merge FreeBSD timecounters from branch simonb-timecounters 2006-06-07 22:33:33 +00:00
if_sppp.h
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if_spppsubr.c Correct spelling of "immediate(ly)". From Zafer. 2006-11-24 21:23:07 +00:00
if_spppvar.h
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if_stf.c Introduce new helper functions to abstract the route caching. 2006-12-15 21:18:52 +00:00
if_stf.h
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if_strip.c __unused removal on arguments; approved by core. 2006-11-16 01:32:37 +00:00
if_stripvar.h merge FreeBSD timecounters from branch simonb-timecounters 2006-06-07 22:33:33 +00:00
if_tap.c The change I committed to etherip was wrong. ether_snprintf doesn't make 2006-11-24 01:04:30 +00:00
if_tap.h
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if_token.h
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if_tokensubr.c Explain XID magic constants, correcting the format ID 2006-12-10 14:52:29 +00:00
if_tun.c __unused removal on arguments; approved by core. 2006-11-16 01:32:37 +00:00
if_tun.h Change the number of TUN[GS]IFHEAD to avoid collision with if_pp. 2006-04-04 11:23:59 +00:00
if_types.h Integrate Common Address Redundancy Procotol (CARP) from OpenBSD 2006-05-18 09:05:49 +00:00
if_vlan.c __unused removal on arguments; approved by core. 2006-11-16 01:32:37 +00:00
if_vlanvar.h
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net_osdep.h PR/19795: Joel Wilsson: net_osdep.h is lying. 2006-09-23 15:17:58 +00:00
netisr.h remove more vestiges of CCITT, LLC, HDLC, NS, and NSIP. 2006-09-07 02:40:31 +00:00
netisr_dispatch.h remove more vestiges of CCITT, LLC, HDLC, NS, and NSIP. 2006-09-07 02:40:31 +00:00
pfil.c
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pfil.h Change "inline" back to "__inline" in .h files -- C99 is still too 2006-02-16 20:17:12 +00:00
pfkeyv2.h
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ppp-comp.h
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ppp-deflate.c __unused removal on arguments; approved by core. 2006-11-16 01:32:37 +00:00
ppp_defs.h
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ppp_tty.c __unused removal on arguments; approved by core. 2006-11-16 01:32:37 +00:00
radix.c Extract subroutines rn_walkfirst() and rn_walknext() from rn_walktree(). 2006-12-04 01:45:50 +00:00
radix.h don't leak kernel variable declarations to userland. 2006-10-22 20:55:09 +00:00
raw_cb.c
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raw_cb.h
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raw_usrreq.c __unused removal on arguments; approved by core. 2006-11-16 01:32:37 +00:00
route.c Introduce new helper functions to abstract the route caching. 2006-12-15 21:18:52 +00:00
route.h Introduce new helper functions to abstract the route caching. 2006-12-15 21:18:52 +00:00
rtsock.c make the routing socket report the right source address in RTM_GET 2006-11-13 19:16:01 +00:00
slcompress.c Perry reports that buf can be NULL, so deal with it. 2006-04-19 15:13:34 +00:00
slcompress.h
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slip.h
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zlib.c __unused removal on arguments; approved by core. 2006-11-16 01:32:37 +00:00
zlib.h
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