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freebsd-nq/sys/net
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Robert Watson 2d9cfabad4 Add a new global rwlock, in_ifaddr_lock, which will synchronize use of the 
in_ifaddrhead and INADDR_HASH address lists.

Previously, these lists were used unsynchronized as they were effectively
never changed in steady state, but we've seen increasing reports of
writer-writer races on very busy VPN servers as core count has gone up
(and similar configurations where address lists change frequently and
concurrently).

For the time being, use rwlocks rather than rmlocks in order to take
advantage of their better lock debugging support.  As a result, we don't
enable ip_input()'s read-locking of INADDR_HASH until an rmlock conversion
is complete and a performance analysis has been done.  This means that one
class of reader-writer races still exists.

MFC after:      6 weeks
Reviewed by:    bz
2009-06-25 11:52:33 +00:00
..
bpf_buffer.c Fill in BPF sysctl descriptions. 2008-07-25 23:58:09 +00:00
bpf_buffer.h Introduce support for zero-copy BPF buffering, which reduces the 2008-03-24 13:49:17 +00:00
bpf_filter.c Fix the last missing parentheses for a return statement in bpf_filter.c. 2008-08-29 20:00:55 +00:00
bpf_jitter.c Initialize scratch memory for JIT-compiled filter when it is allocated. 2008-08-28 16:40:51 +00:00
bpf_jitter.h Fix a typo in copyrights. 2008-08-25 20:43:13 +00:00
bpf_zerocopy.c Clarify some comments, fix some types, and rename ZBUF_FLAG_IMMUTABLE to 2009-03-07 10:21:37 +00:00
bpf_zerocopy.h Make sure we are clearing the ZBUF_FLAG_IMMUTABLE any time a free buffer 2008-07-05 20:11:28 +00:00
bpf.c Implement the -z (zero counters) option for the various bpf counters. 2009-06-19 20:31:44 +00:00
bpf.h Sync DLTs with latest libpcap version. 2009-04-02 13:02:12 +00:00
bpfdesc.h Remove trailing ';' in BPFD_LOCK_ASSERT macro. 2008-08-01 22:08:14 +00:00
bridgestp.c After cleaning up rt_tables from vnet.h and cleaning up opt_route.h 2009-06-23 17:03:45 +00:00
bridgestp.h
ethernet.h Change if_output to take a struct route as its fourth argument in order 2009-04-16 20:30:28 +00:00
fddi.h Switch cmd argument to u_long. This matches what if_ethersubr.c does and 2009-06-21 10:29:31 +00:00
firewire.h Switch cmd argument to u_long. This matches what if_ethersubr.c does and 2009-06-21 10:29:31 +00:00
flowtable.c V_irtualize flowtable state. 2009-06-22 21:19:24 +00:00
flowtable.h V_irtualize flowtable state. 2009-06-22 21:19:24 +00:00
ieee8023ad_lacp.c Use the flowid if its available for selecting the tx port. 2009-04-30 14:25:44 +00:00
ieee8023ad_lacp.h Remove extra semicolons. 2008-03-17 01:26:44 +00:00
if_arc.h Switch cmd argument to u_long. This matches what if_ethersubr.c does and 2009-06-21 10:29:31 +00:00
if_arcsubr.c Switch cmd argument to u_long. This matches what if_ethersubr.c does and 2009-06-21 10:29:31 +00:00
if_arp.h
if_atm.h Change if_output to take a struct route as its fourth argument in order 2009-04-16 20:30:28 +00:00
if_atmsubr.c Move "options MAC" from opt_mac.h to opt_global.h, as it's now in GENERIC 2009-06-05 14:55:22 +00:00
if_bridge.c carp(4) allows people to share a set of IP addresses and can only 2009-06-11 10:26:38 +00:00
if_bridgevar.h
if_clone.c V_irtualize the if_clone framework, thus allowing for clonable ifnets 2009-05-23 21:43:44 +00:00
if_clone.h Fix clone destruction, can't use the simple api because that does not remove 2008-09-20 19:38:37 +00:00
if_dead.c During if_detach(), invoke if_dead() to set the ifnet's function 2009-04-23 11:51:53 +00:00
if_disc.c Change if_output to take a struct route as its fourth argument in order 2009-04-16 20:30:28 +00:00
if_dl.h
if_edsc.c
if_ef.c After cleaning up rt_tables from vnet.h and cleaning up opt_route.h 2009-06-23 17:03:45 +00:00
if_enc.c Add the explicit include of vimage.h to another five .c files still 2009-06-17 12:44:11 +00:00
if_enc.h Increase statistic counters for enc0 interface when enabled 2008-08-12 09:05:01 +00:00
if_epair.c Merge from p4: CH154790,154793,154874 2009-06-24 22:21:30 +00:00
if_ethersubr.c Break at_ifawithnet() into two variants: 2009-06-24 10:32:44 +00:00
if_faith.c Change if_output to take a struct route as its fourth argument in order 2009-04-16 20:30:28 +00:00
if_fddisubr.c Break at_ifawithnet() into two variants: 2009-06-24 10:32:44 +00:00
if_fwsubr.c Switch cmd argument to u_long. This matches what if_ethersubr.c does and 2009-06-21 10:29:31 +00:00
if_gif.c ip_gif_ttl/GIF_TTL are only used by the inet part in in_gif.c, 2009-06-10 13:39:51 +00:00
if_gif.h - Fix sanity check of GIFSOPTS ioctl. 2009-06-09 02:27:59 +00:00
if_gre.c Add the explicit include of vimage.h to another five .c files still 2009-06-17 12:44:11 +00:00
if_gre.h Add support for the optional key in the GRE header. 2008-06-20 17:26:34 +00:00
if_iso88025subr.c Switch cmd argument to u_long. This matches what if_ethersubr.c does and 2009-06-21 10:29:31 +00:00
if_lagg.c Use the flowid if its available for selecting the tx port. 2009-04-30 14:25:44 +00:00
if_lagg.h Change if_output to take a struct route as its fourth argument in order 2009-04-16 20:30:28 +00:00
if_llatbl.c When an interface address is removed and the last prefix 2009-05-20 21:07:15 +00:00
if_llatbl.h When an interface address is removed and the last prefix 2009-05-20 21:07:15 +00:00
if_llc.h
if_loop.c After r193232 rt_tables in vnet.h are no longer indirectly dependent on 2009-06-08 19:57:35 +00:00
if_media.c
if_media.h Add 10Gbase-T to known ethernet media types. 2009-06-24 21:53:25 +00:00
if_mib.c After cleaning up rt_tables from vnet.h and cleaning up opt_route.h 2009-06-23 17:03:45 +00:00
if_mib.h
if_sppp.h
if_spppfr.c
if_spppsubr.c Add a new global rwlock, in_ifaddr_lock, which will synchronize use of the 2009-06-25 11:52:33 +00:00
if_stf.c Add a new global rwlock, in_ifaddr_lock, which will synchronize use of the 2009-06-25 11:52:33 +00:00
if_stf.h
if_tap.c Adapt vfs kqfilter to the shared vnode lock used by zfs write vop. Use 2009-06-10 20:59:32 +00:00
if_tap.h Add new TAPGIFNAME tap(4) character device ioctl. This is a 2008-09-08 22:43:55 +00:00
if_tapvar.h
if_tun.c Add explicit includes for jail.h to the files that need them and 2009-06-17 15:01:01 +00:00
if_tun.h
if_types.h
if_var.h Add a new function, ifa_ifwithaddr_check(), which rather than returning 2009-06-22 10:59:34 +00:00
if_vlan_var.h
if_vlan.c After cleaning up rt_tables from vnet.h and cleaning up opt_route.h 2009-06-23 17:03:45 +00:00
if.c In if_setlladdr(), use IF_ADDR_LOCK() and ifaddr references to improve 2009-06-24 10:36:48 +00:00
if.h Manage vnets via the jail system. If a jail is given the boolean 2009-06-15 18:59:29 +00:00
iso88025.h Switch cmd argument to u_long. This matches what if_ethersubr.c does and 2009-06-21 10:29:31 +00:00
netisr.c Add an optional callback function that will be invoked when a per-CPU 2009-06-14 17:15:18 +00:00
netisr.h Add an optional callback function that will be invoked when a per-CPU 2009-06-14 17:15:18 +00:00
pfil.c A few locking fixes and cleanups to pfil hook registration, 2008-12-16 17:03:22 +00:00
pfil.h Make the rmlock(9) interface a bit more like the rwlock(9) interface: 2009-05-29 10:52:37 +00:00
pfkeyv2.h Added support for NAT-Traversal (RFC 3948) in IPsec stack. 2009-06-12 15:44:35 +00:00
ppp_defs.h
radix_mpath.c Extend route command: 2009-04-14 23:05:36 +00:00
radix_mpath.h When RADIX_MPATH is enabled, the route selection is not rotating 2008-05-30 09:34:35 +00:00
radix.c remove assertion checks for now - ipfw uses its own lock for protecting its radix tree instance 2008-12-16 11:01:36 +00:00
radix.h - convert radix node head lock from mutex to rwlock 2008-12-07 21:15:43 +00:00
raw_cb.c After cleaning up rt_tables from vnet.h and cleaning up opt_route.h 2009-06-23 17:03:45 +00:00
raw_cb.h Put a global variables, which were virtualized but formerly 2008-12-11 16:26:38 +00:00
raw_usrreq.c After cleaning up rt_tables from vnet.h and cleaning up opt_route.h 2009-06-23 17:03:45 +00:00
route.c Modify most routines returning 'struct ifaddr *' to return references 2009-06-23 20:19:09 +00:00
route.h Collect all VIMAGE_GLOBALS variables in one place. 2009-06-22 15:07:12 +00:00
rtsock.c Modify most routines returning 'struct ifaddr *' to return references 2009-06-23 20:19:09 +00:00
slcompress.c
slcompress.h
vnet.h Updates after r194640: 2009-06-22 17:56:07 +00:00
zlib.c
zlib.h