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4e7f640dfb
freebsd-skq/sys/netinet6
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John Baldwin 4e7f640dfb Optimize sx locks to use simple atomic operations for the common cases of 
obtaining and releasing shared and exclusive locks.  The algorithms for
manipulating the lock cookie are very similar to that rwlocks.  This patch
also adds support for exclusive locks using the same algorithm as mutexes.

A new sx_init_flags() function has been added so that optional flags can be
specified to alter a given locks behavior.  The flags include SX_DUPOK,
SX_NOWITNESS, SX_NOPROFILE, and SX_QUITE which are all identical in nature
to the similar flags for mutexes.

Adaptive spinning on select locks may be enabled by enabling the
ADAPTIVE_SX kernel option.  Only locks initialized with the SX_ADAPTIVESPIN
flag via sx_init_flags() will adaptively spin.

The common cases for sx_slock(), sx_sunlock(), sx_xlock(), and sx_xunlock()
are now performed inline in non-debug kernels.  As a result, <sys/sx.h> now
requires <sys/lock.h> to be included prior to <sys/sx.h>.

The new kernel option SX_NOINLINE can be used to disable the aforementioned
inlining in non-debug kernels.

The size of struct sx has changed, so the kernel ABI is probably greatly
disturbed.

MFC after:	1 month
Submitted by:	attilio
Tested by:	kris, pjd
2007-03-31 23:23:42 +00:00
..
ah6.h /* -> /*- for license, minor formatting changes, separate for KAME 2005-01-07 02:30:35 +00:00
ah_aesxcbcmac.c With exception of the if_name() macro, all definitions in net_osdep.h 2006-08-04 21:27:40 +00:00
ah_aesxcbcmac.h /* -> /*- for license, minor formatting changes, separate for KAME 2005-01-07 02:30:35 +00:00
ah_core.c MFC after: 3 days 2007-02-05 11:05:41 +00:00
ah_input.c With exception of the if_name() macro, all definitions in net_osdep.h 2006-08-04 21:27:40 +00:00
ah_output.c With exception of the if_name() macro, all definitions in net_osdep.h 2006-08-04 21:27:40 +00:00
ah.h /* -> /*- for license, minor formatting changes, separate for KAME 2005-01-07 02:30:35 +00:00
dest6.c /* -> /*- for license, minor formatting changes, separate for KAME 2005-01-07 02:30:35 +00:00
esp6.h /* -> /*- for license, minor formatting changes, separate for KAME 2005-01-07 02:30:35 +00:00
esp_aesctr.c Marked these as packed correctly 2007-01-12 07:20:25 +00:00
esp_aesctr.h /* -> /*- for license, minor formatting changes, separate for KAME 2005-01-07 02:30:35 +00:00
esp_core.c With exception of the if_name() macro, all definitions in net_osdep.h 2006-08-04 21:27:40 +00:00
esp_input.c With exception of the if_name() macro, all definitions in net_osdep.h 2006-08-04 21:27:40 +00:00
esp_output.c With exception of the if_name() macro, all definitions in net_osdep.h 2006-08-04 21:27:40 +00:00
esp_rijndael.c With exception of the if_name() macro, all definitions in net_osdep.h 2006-08-04 21:27:40 +00:00
esp_rijndael.h /* -> /*- for license, minor formatting changes, separate for KAME 2005-01-07 02:30:35 +00:00
esp.h /* -> /*- for license, minor formatting changes, separate for KAME 2005-01-07 02:30:35 +00:00
frag6.c MFp4: 92972, 98913 + one more change 2006-12-12 12:17:58 +00:00
icmp6.c In the ICMP6 path to handle FQDN 'who-are-you' queries, check that the 2007-02-10 12:25:19 +00:00
icmp6.h
in6_cksum.c Marked these as packed correctly 2007-01-12 07:20:25 +00:00
in6_gif.c MFp4: 92972, 98913 + one more change 2006-12-12 12:17:58 +00:00
in6_gif.h /* -> /*- for license, minor formatting changes, separate for KAME 2005-01-07 02:30:35 +00:00
in6_ifattach.c Revert the default value of net.inet6.ip6.auto_linklocal to 1. 2006-10-13 12:41:36 +00:00
in6_ifattach.h sync with KAME regarding NDP 2005-10-21 16:23:01 +00:00
in6_pcb.c Sweep kernel replacing suser(9) calls with priv(9) calls, assigning 2006-11-06 13:42:10 +00:00
in6_pcb.h Modify in6_pcbpurgeif0() to accept a pcbinfo structure rather than a pcb 2006-04-23 15:06:16 +00:00
in6_proto.c Make IPv6 multicast forwarding dynamically loadable from a GENERIC kernel. 2007-02-24 11:38:47 +00:00
in6_rmx.c Complete timebase (time_second -> time_uptime) conversion. 2006-07-05 23:37:21 +00:00
in6_src.c Optimize sx locks to use simple atomic operations for the common cases of 2007-03-31 23:23:42 +00:00
in6_var.h MFp4: 92972, 98913 + one more change 2006-12-12 12:17:58 +00:00
in6.c Make IPv6 multicast forwarding dynamically loadable from a GENERIC kernel. 2007-02-24 11:38:47 +00:00
in6.h This comment on various IPPORT_ defines was copied from in.h and 2006-03-28 12:51:22 +00:00
ip6_ecn.h /* -> /*- for license, minor formatting changes, separate for KAME 2005-01-07 02:30:35 +00:00
ip6_forward.c MFp4: 92972, 98913 + one more change 2006-12-12 12:17:58 +00:00
ip6_id.c /* -> /*- for license, minor formatting changes, separate for KAME 2005-01-07 02:30:35 +00:00
ip6_input.c Make IPv6 multicast forwarding dynamically loadable from a GENERIC kernel. 2007-02-24 11:38:47 +00:00
ip6_mroute.c Add comments about common idioms for cleanup pass at a later date. 2007-02-28 21:58:37 +00:00
ip6_mroute.h Remove code which would never be used, viz a viz Quality-of-Service; 2007-02-28 20:32:25 +00:00
ip6_output.c With exception of the if_name() macro, all definitions in net_osdep.h 2006-08-04 21:27:40 +00:00
ip6_var.h Make IPv6 multicast forwarding dynamically loadable from a GENERIC kernel. 2007-02-24 11:38:47 +00:00
ip6.h
ip6protosw.h /* -> /*- for license, minor formatting changes, separate for KAME 2005-01-07 02:30:35 +00:00
ipcomp6.h /* -> /*- for license, minor formatting changes, separate for KAME 2005-01-07 02:30:35 +00:00
ipcomp_core.c With exception of the if_name() macro, all definitions in net_osdep.h 2006-08-04 21:27:40 +00:00
ipcomp_input.c With exception of the if_name() macro, all definitions in net_osdep.h 2006-08-04 21:27:40 +00:00
ipcomp_output.c With exception of the if_name() macro, all definitions in net_osdep.h 2006-08-04 21:27:40 +00:00
ipcomp.h /* -> /*- for license, minor formatting changes, separate for KAME 2005-01-07 02:30:35 +00:00
ipsec6.h /* -> /*- for license, minor formatting changes, separate for KAME 2005-01-07 02:30:35 +00:00
ipsec.c MFp4: 92972, 98913 + one more change 2006-12-12 12:17:58 +00:00
ipsec.h /* -> /*- for license, minor formatting changes, separate for KAME 2005-01-07 02:30:35 +00:00
mld6_var.h sync with KAME regarding NDP 2005-10-21 16:23:01 +00:00
mld6.c Implement reference counting for ifmultiaddr, in_multi, and in6_multi 2007-03-20 00:36:10 +00:00
nd6_nbr.c MFp4: 92972, 98913 + one more change 2006-12-12 12:17:58 +00:00
nd6_rtr.c MFp4: 92972, 98913 + one more change 2006-12-12 12:17:58 +00:00
nd6.c ng_iface requiers neighbor cache as well. 2007-02-03 09:34:36 +00:00
nd6.h sync with KAME regarding NDP 2005-10-21 16:23:01 +00:00
pim6_var.h Remove public declarations of variables that were forgotten when they were 2005-08-10 07:10:02 +00:00
pim6.h /* -> /*- for license, minor formatting changes, separate for KAME 2005-01-07 02:30:35 +00:00
raw_ip6.c Fix tinderbox. ip6_mrouter should be defined in raw_ip6.c as it is 2007-02-24 21:09:35 +00:00
raw_ip6.h /* -> /*- for license, minor formatting changes, separate for KAME 2005-01-07 02:30:35 +00:00
route6.c scope cleanup. with this change 2005-07-25 12:31:43 +00:00
scope6_var.h scope cleanup. with this change 2005-07-25 12:31:43 +00:00
scope6.c MFp4: 92972, 98913 + one more change 2006-12-12 12:17:58 +00:00
sctp6_usrreq.c - Found bug in min split point bundling which caused 2007-03-31 11:47:30 +00:00
sctp6_var.h - errno -> becomes error in sctp_output.c and sctputil.c 2007-03-19 06:53:02 +00:00
tcp6_var.h /* -> /*- for license, minor formatting changes, separate for KAME 2005-01-07 02:30:35 +00:00
udp6_output.c With exception of the if_name() macro, all definitions in net_osdep.h 2006-08-04 21:27:40 +00:00
udp6_usrreq.c Rename two identically named log_in_vain variables: tcp_input.c's static 2007-02-20 10:20:03 +00:00
udp6_var.h /* -> /*- for license, minor formatting changes, separate for KAME 2005-01-07 02:30:35 +00:00