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5ee847d3ac
freebsd-dev/sys/net
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Robert Watson 5ee847d3ac Reimplement and/or implement vnet list locking by replacing a mostly 
unused custom mutex/condvar-based sleep locks with two locks: an
rwlock (for non-sleeping use) and sxlock (for sleeping use).  Either
acquired for read is sufficient to stabilize the vnet list, but both
must be acquired for write to modify the list.

Replace previous no-op read locking macros, used in various places
in the stack, with actual locking to prevent race conditions.  Callers
must declare when they may perform unbounded sleeps or not when
selecting how to lock.

Refactor vnet sysinits so that the vnet list and locks are initialized
before kernel modules are linked, as the kernel linker will use them
for modules loaded by the boot loader.

Update various consumers of these KPIs based on whether they may sleep
or not.

Reviewed by:	bz
Approved by:	re (kib)
2009-07-19 14:20:53 +00:00
..
bpf_buffer.c
bpf_buffer.h
bpf_filter.c
bpf_jitter.c
bpf_jitter.h
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
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
bridgestp.c Build on Jeff Roberson's linker-set based dynamic per-CPU allocator 2009-07-14 22:48:30 +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 Remove unused VNET_SET() and related macros; only VNET_GET() is 2009-07-16 21:13:04 +00:00
flowtable.h Remove unused VNET_SET() and related macros; only VNET_GET() is 2009-07-16 21:13:04 +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
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 Build on Jeff Roberson's linker-set based dynamic per-CPU allocator 2009-07-14 22:48:30 +00:00
if_bridgevar.h
if_clone.c Remove unused VNET_SET() and related macros; only VNET_GET() is 2009-07-16 21:13:04 +00:00
if_clone.h
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 Build on Jeff Roberson's linker-set based dynamic per-CPU allocator 2009-07-14 22:48:30 +00:00
if_enc.c Build on Jeff Roberson's linker-set based dynamic per-CPU allocator 2009-07-14 22:48:30 +00:00
if_enc.h
if_epair.c Merge from p4: CH154790,154793,154874 2009-06-24 22:21:30 +00:00
if_ethersubr.c Remove unused VNET_SET() and related macros; only VNET_GET() is 2009-07-16 21:13:04 +00:00
if_faith.c Build on Jeff Roberson's linker-set based dynamic per-CPU allocator 2009-07-14 22:48:30 +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 Remove unused VNET_SET() and related macros; only VNET_GET() is 2009-07-16 21:13:04 +00:00
if_gif.h Remove unused VNET_SET() and related macros; only VNET_GET() is 2009-07-16 21:13:04 +00:00
if_gre.c Build on Jeff Roberson's linker-set based dynamic per-CPU allocator 2009-07-14 22:48:30 +00:00
if_gre.h
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 Remove unused VNET_SET() and related macros; only VNET_GET() is 2009-07-16 21:13:04 +00:00
if_media.c
if_media.h Implementation of the upcoming Wireless Mesh standard, 802.11s, on the 2009-07-11 15:02:45 +00:00
if_mib.c Build on Jeff Roberson's linker-set based dynamic per-CPU allocator 2009-07-14 22:48:30 +00:00
if_mib.h
if_sppp.h
if_spppfr.c
if_spppsubr.c Build on Jeff Roberson's linker-set based dynamic per-CPU allocator 2009-07-14 22:48:30 +00:00
if_stf.c Build on Jeff Roberson's linker-set based dynamic per-CPU allocator 2009-07-14 22:48:30 +00:00
if_stf.h
if_tap.c Change the type of uio_resid member of struct uio from int to ssize_t. 2009-06-25 18:46:30 +00:00
if_tap.h
if_tapvar.h
if_tun.c Update if_stf and if_tun to use if_addr_rlock()/if_addr_runlock() rather 2009-06-26 00:45:20 +00:00
if_tun.h
if_types.h
if_var.h Remove unused VNET_SET() and related macros; only VNET_GET() is 2009-07-16 21:13:04 +00:00
if_vlan_var.h
if_vlan.c Build on Jeff Roberson's linker-set based dynamic per-CPU allocator 2009-07-14 22:48:30 +00:00
if.c Reimplement and/or implement vnet list locking by replacing a mostly 2009-07-19 14:20:53 +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 In case we cannot queue a packet reaching the queue limit, retain the 2009-06-30 05:21:00 +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
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 Build on Jeff Roberson's linker-set based dynamic per-CPU allocator 2009-07-14 22:48:30 +00:00
raw_cb.h Remove unused VNET_SET() and related macros; only VNET_GET() is 2009-07-16 21:13:04 +00:00
raw_usrreq.c Build on Jeff Roberson's linker-set based dynamic per-CPU allocator 2009-07-14 22:48:30 +00:00
route.c Remove unused VNET_SET() and related macros; only VNET_GET() is 2009-07-16 21:13:04 +00:00
route.h Collect all VIMAGE_GLOBALS variables in one place. 2009-06-22 15:07:12 +00:00
rtsock.c Build on Jeff Roberson's linker-set based dynamic per-CPU allocator 2009-07-14 22:48:30 +00:00
slcompress.c
slcompress.h
vnet.c Build on Jeff Roberson's linker-set based dynamic per-CPU allocator 2009-07-14 22:48:30 +00:00
vnet.h Remove unused VNET_SET() and related macros; only VNET_GET() is 2009-07-16 21:13:04 +00:00
zlib.c
zlib.h