Bjoern A. Zeeb 52dcd04ba3 gre(4) was using a field in the softc to detect possible recursion. ... On MP systems this is not a usable solution anymore and could easily lead to false positives triggering enough logging that even using the console was no longer usable (multiple parallel ping -f can do). Switch to the suggested solution of using mbuf tags to carry per packet state between gre_output() invocations. Contrary to the proposed solution modelled after gif(4) only allocate one mbuf tag per packet rather than per packet and per gre_output() pass through. As the sysctl to control the possible valid (gre in gre) nestings does no sanity checks, make sure to always allocate space in the mbuf tag for at least one, and at most 255 possible gre interfaces to detect loops in addition to the counter. Submitted by: Cristian KLEIN (cristi net.utcluj.ro) (original version) PR: kern/114714 Reviewed by: Cristian KLEIN (cristi net.utcluj.ro) Reviewed bu: Wooseog Choi (ben_choi hotmail.com) Sponsored by: Sandvine Incorporated MFC after: 1 week		2011-06-18 09:34:03 +00:00
..
bpf.c	Fix a typo in a comment.	2010-09-16 18:37:33 +00:00
bpf.h	Sync DLTs with the latest pcap version.	2010-10-29 18:41:09 +00:00
bpf_buffer.c	o Swap descriptions for net.bpf.bufsize and net.bpf.maxbufsize.	2010-11-24 05:50:19 +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	General style cleanup, no functional change.	2009-11-20 21:12:40 +00:00
bpf_jitter.h	- Allocate scratch memory on stack instead of pre-allocating it with	2009-11-20 18:49:20 +00:00
bpf_zerocopy.c	Introduce and use a new VM interface for temporarily pinning pages. This	2010-12-25 21:26:56 +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
bpfdesc.h	Implement flexible BPF timestamping framework.	2010-06-15 19:28:44 +00:00
bridgestp.c	Set curvnet context in a callout-trigerred code path.	2011-06-07 20:46:03 +00:00
bridgestp.h	Set curvnet context in a callout-trigerred code path.	2011-06-07 20:46:03 +00:00
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	- Restore dropping the priority of syncer down to PPAUSE when it is idle.	2011-01-06 22:17:07 +00:00
flowtable.h	allocate ipv6 flows from the ipv6 flow zone	2010-05-16 21:48:39 +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.c	When removing ifnets, we should first remove the reference to ifnet	2011-04-04 07:45:08 +00:00
if.h	Grab one of the ifcap bits for netmap, and enable printing in ifconfig.	2011-06-14 12:40:55 +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	- Merge changes to the base system to support OFED. These include	2011-03-21 09:40:01 +00:00
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	Unbreak LINT by moving all carp hooks to net/if.c / netinet/ip_carp.h, with	2010-08-11 20:18:19 +00:00
if_bridgevar.h	Add an option to limit the number of source MACs that can be behind a bridge	2007-11-04 08:32:27 +00:00
if_clone.c	After some off-list discussion, revert a number of changes to the	2010-11-22 19:32:54 +00:00
if_clone.h	Introduce and use a sysinit-based initialization scheme for virtual	2009-07-23 20:46:49 +00:00
if_dead.c	Remove if_timer/if_watchdog now that they are no longer used. The space	2009-11-30 21:25:57 +00:00
if_debug.c	Factor out DDB commands from r204145, r204279 into if_debug.c for further	2010-10-25 08:30:19 +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	/* -> /*- for license, minor formatting changes	2005-01-07 01:45:51 +00:00
if_edsc.c	Give a hint that softc can contain many things besides ifp.	2007-03-26 09:05:10 +00:00
if_ef.c	Add new tunable 'net.link.ifqmaxlen' to set default send interface	2010-05-03 07:32:50 +00:00
if_enc.c	Make various (pseudo) interfaces compile without INET in the kernel	2011-04-27 19:30:44 +00:00
if_enc.h	Increase statistic counters for enc0 interface when enabled	2008-08-12 09:05:01 +00:00
if_epair.c	Allow for vlan(4) interfaces with MTU of 1500 bytes to be configured	2011-05-24 08:02:55 +00:00
if_ethersubr.c	Add an optional netisr dispatch point at ether_input(), but set the	2011-06-01 20:00:25 +00:00
if_faith.c	Merge the remainder of kern_vimage.c and vimage.h into vnet.c and	2009-08-01 19:26:27 +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	Hide the outer IP addresses of a tunnel interfaces (gif(4), gre(4))	2011-03-02 21:39:08 +00:00
if_gif.h	MFP4: @176978-176982, 176984, 176990-176994, 177441	2010-04-29 11:52:42 +00:00
if_gre.c	gre(4) was using a field in the softc to detect possible recursion.	2011-06-18 09:34:03 +00:00
if_gre.h	gre(4) was using a field in the softc to detect possible recursion.	2011-06-18 09:34:03 +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	LACP frames must not be send VLAN-tagged, check for that before processing.	2011-04-30 20:34:52 +00:00
if_lagg.h	Propagate the vlan eventis to the underlying interfaces/members so they can do initialization of hw related features.	2010-02-06 13:49:35 +00:00
if_llatbl.c	The statically configured (permanent) ARP entries are removed when an	2011-05-20 19:12:20 +00:00
if_llatbl.h	The statically configured (permanent) ARP entries are removed when an	2011-05-20 19:12:20 +00:00
if_llc.h	Move the __packed declarations. This makes sizeof(struct llc) 8 again	2006-12-01 17:50:11 +00:00
if_loop.c	After some off-list discussion, revert a number of changes to the	2010-11-22 19:32:54 +00:00
if_media.c	Fix typos - remove duplicate "the".	2011-02-21 09:01:34 +00:00
if_media.h	- Add 10baseT as an alias for 10baseT/UTP.	2011-05-15 12:58:29 +00:00
if_mib.c	Merge the remainder of kern_vimage.c and vimage.h into vnet.c and	2009-08-01 19:26:27 +00:00
if_mib.h	Add a new leaf to the net.link.generic.ifdata.%d sysctl to retrieve	2006-01-04 12:57:09 +00:00
if_sppp.h	Stop embedding struct ifnet at the top of driver softcs. Instead the	2005-06-10 16:49:24 +00:00
if_spppfr.c	Stop embedding struct ifnet at the top of driver softcs. Instead the	2005-06-10 16:49:24 +00:00
if_spppsubr.c	Merge the remainder of kern_vimage.c and vimage.h into vnet.c and	2009-08-01 19:26:27 +00:00
if_stf.c	Add new tunable 'net.link.ifqmaxlen' to set default send interface	2010-05-03 07:32:50 +00:00
if_stf.h	/* -> /*- for license, minor formatting changes	2005-01-07 01:45:51 +00:00
if_tap.c	- Expand scope of tun/tap softc locks to cover more softc fields and	2010-09-22 21:02:43 +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	Stop embedding struct ifnet at the top of driver softcs. Instead the	2005-06-10 16:49:24 +00:00
if_tun.c	Properly return an ENOBUFS error if a write to a tun(4) device fails	2011-06-03 13:47:05 +00:00
if_tun.h	/* -> /*- for license, minor formatting changes	2005-01-07 01:45:51 +00:00
if_types.h	- Merge changes to the base system to support OFED. These include	2011-03-21 09:40:01 +00:00
if_var.h	- Merge changes to the base system to support OFED. These include	2011-03-21 09:40:01 +00:00
if_vlan.c	- Merge changes to the base system to support OFED. These include	2011-03-21 09:40:01 +00:00
if_vlan_var.h	- Merge changes to the base system to support OFED. These include	2011-03-21 09:40:01 +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	On multi-core, multi-threaded PPC systems, it is important that the threads	2011-05-31 15:11:43 +00:00
netisr.h	Rework netisr policy mechanism so that per-protocol dispatch policies can	2011-05-24 12:34:19 +00:00
netisr_internal.h	Rework netisr policy mechanism so that per-protocol dispatch policies can	2011-05-24 12:34:19 +00:00
pfil.c	Clean up comments, white space, and style in pfil.c (especially new VNET	2009-10-19 15:19:14 +00:00
pfil.h	small portability fix to build on linux/windows	2010-07-15 14:41:06 +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	/* -> /*- for license, minor formatting changes	2005-01-07 01:45:51 +00:00
radix.c	whitespace cleanup	2010-07-15 14:41:59 +00:00
radix.h	Not only flush the ipfw tables when unloading ipfw or tearing	2010-03-07 15:37:58 +00:00
radix_mpath.c	One of the advantages of enabling ECMP (a.k.a RADIX_MPATH) is to	2010-03-09 01:11:45 +00:00
radix_mpath.h	When RADIX_MPATH is enabled, the route selection is not rotating	2008-05-30 09:34:35 +00:00
raw_cb.c	Merge the remainder of kern_vimage.c and vimage.h into vnet.c and	2009-08-01 19:26:27 +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	Merge the remainder of kern_vimage.c and vimage.h into vnet.c and	2009-08-01 19:26:27 +00:00
route.c	ouch, newrt is used on the return path, my fault.	2011-03-19 21:10:57 +00:00
route.h	Remove dead code.	2011-03-20 08:35:00 +00:00
rtsock.c	As info.rti_info[RTAX_DST] can point inside of rtm we must not free the rtm	2011-02-10 01:24:09 +00:00
slcompress.c	Remove advertising clause from University of California Regent's	2004-04-07 20:46:16 +00:00
slcompress.h	/* -> /*- for license, minor formatting changes	2005-01-07 01:45:51 +00:00
vnet.c	Remove unneeded includes of <sys/linker_set.h>. Other headers that use	2011-01-11 13:59:06 +00:00
vnet.h	Mfp4 CH=177255:	2011-02-11 14:17:58 +00:00
zlib.c	Forward declare z_errmsg with static linkage since it is defined	2005-09-11 16:13:02 +00:00
zlib.h	Merge projects/enhanced_coredumps (r204346) into HEAD:	2010-03-02 06:58:58 +00:00
zutil.h	Merge projects/enhanced_coredumps (r204346) into HEAD:	2010-03-02 06:58:58 +00:00