Commit Graph

43 Commits

Author SHA1 Message Date
Pedro F. Giffuni
51369649b0 sys: further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.
2017-11-20 19:43:44 +00:00
Warner Losh
fbbd9655e5 Renumber copyright clause 4
Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by:	Jan Schaumann <jschauma@stevens.edu>
Pull Request:	https://github.com/freebsd/freebsd/pull/96
2017-02-28 23:42:47 +00:00
Alexander V. Chernikov
61eee0e202 MFP r287070,r287073: split radix implementation and route table structure.
There are number of radix consumers in kernel land (pf,ipfw,nfs,route)
  with different requirements. In fact, first 3 don't have _any_ requirements
  and first 2 does not use radix locking. On the other hand, routing
  structure do have these requirements (rnh_gen, multipath, custom
  to-be-added control plane functions, different locking).
Additionally, radix should not known anything about its consumers internals.

So, radix code now uses tiny 'struct radix_head' structure along with
  internal 'struct radix_mask_head' instead of 'struct radix_node_head'.
  Existing consumers still uses the same 'struct radix_node_head' with
  slight modifications: they need to pass pointer to (embedded)
  'struct radix_head' to all radix callbacks.

Routing code now uses new 'struct rib_head' with different locking macro:
  RADIX_NODE_HEAD prefix was renamed to RIB_ (which stands for routing
  information base).

New net/route_var.h header was added to hold routing subsystem internal
  data. 'struct rib_head' was placed there. 'struct rtentry' will also
  be moved there soon.
2016-01-25 06:33:15 +00:00
Luiz Otavio O Souza
8b15f615e0 Follow r256586 and rename the kernel version of the Free() macro to
R_Free().  This matches the other macros and reduces the chances to clash
with other headers.

This also fixes the build of radix.c outside of the kernel environment.

Reviewed by:	glebius
2015-07-30 02:09:03 +00:00
George V. Neville-Neil
9b5f5ede41 Revert previous commit (262727) and bounce patch back to the
submitter.

Pointed out by: jhb
2014-03-04 23:55:04 +00:00
George V. Neville-Neil
596031c052 Naming consistency fix. The routing code defines
RADIX_NODE_HEAD_LOCK as grabbing the write lock,
but RADIX_NODE_HEAD_LOCK_ASSERT as checking the read lock.

Submitted by:	Vijay Singh <vijju.singh at gmail.com>
MFC after:	1 month
2014-03-04 05:09:46 +00:00
Alexander V. Chernikov
5a2f4cbd92 Change semantics for rnh_lookup() function: now
it performs exact match search, regardless of netmask existance.
This simplifies most of rnh_lookup() consumers.

Fix panic triggered by deleting non-existent host route.

PR:		kern/185092
Submitted by:	Nikolay Denev <ndenev at gmail.com>
MFC after:	1 month
2014-01-04 22:25:26 +00:00
Alexander V. Chernikov
65a17d744e Fix long-standing issue with incorrect radix mask calculation.
Usual symptoms are messages like
rn_delete: inconsistent annotation
rn_addmask: mask impossibly already in tree
or inability to flush/delete particular prefix in ipfw table.

Changes:
* Assume 32 bytes as maximum radix key length
* Remove rn_init()
* Statically allocate rn_ones/rn_zeroes
* Make separate mask tree for each "normal" tree instead of system global one
* Remove "optimization" on masks reusage and key zeroying
* Change rn_addmask() arguments to accept tree pointer (no users in base)

PR:		kern/182851, kern/169206, kern/135476, kern/134531
Found by:	Slawa Olhovchenkov <slw@zxy.spb.ru>
MFC after:	2 weeks
Reviewed by:	glebius
Sponsored by:	Yandex LLC
2013-10-16 12:18:44 +00:00
Alexander V. Chernikov
fa27a1fa71 Remove unused fields from radix_node_head.
Sponsored by:	Yandex LLC
2013-10-16 10:33:20 +00:00
Gleb Smirnoff
994409375b Rename Free() macro to R_Free(). This matches R_Malloc() and has much lower
probability to clash with other headers.

Submitted by:	Eric van Gyzen <eric_van_gyzen dell.com>
2013-10-16 04:59:59 +00:00
Kip Macy
1eeb6d97d0 Make KBI changes required for future MFCing of inpcb rtentry / llentry caching.
Reviewed by:	rwatson, bz
Approved by:	re (kib)
2011-09-20 20:27:26 +00:00
Bjoern A. Zeeb
d9a362862c Add spares to the network stack for FreeBSD-9:
- TCP keep* timers
- TCP UTO (adjust from what was there already)
- netmap
- route caching
- user cookie (temporary to allow for the real fix)

Slightly re-shuffle struct ifnet moving fields out of the middle
of spares and to better align.

Discussed with:	rwatson (slightly earlier version)
2011-07-17 21:15:20 +00:00
Bjoern A. Zeeb
e253cdd07c Not only flush the ipfw tables when unloading ipfw or tearing
down a virtual netowrk stack, but also free the Radix Node Head.

Sponsored by:	ISPsystem
Reviewed by:	julian
MFC after:	5 days
2010-03-07 15:37:58 +00:00
Bjoern A. Zeeb
1bb635b04d Introduce a function rn_detachhead() that will free the
radix table root nodes.  This is only needed (and available)
in the virtualization case to free the resources when tearing
down a virtual network stack.

Sponsored by:	ISPsystem
Reviewed by:	julian, zec
MFC after:	5 days
2010-03-06 21:27:26 +00:00
Luigi Rizzo
614cb83990 Move the scan for max_keylen into route.c::route_init(),
and make max_keylen an argument for rn_init().
This removes an unnecessary dependency on domain.h from radix.c

MFC after:	7 days
2009-12-14 20:12:51 +00:00
Kip Macy
3120b9d428 - convert radix node head lock from mutex to rwlock
- make radix node head lock not recursive
 - fix LOR in rtexpunge
 - fix LOR in rtredirect

Reviewed by:	sam
2008-12-07 21:15:43 +00:00
Qing Li
e440aed958 This patch provides the back end support for equal-cost multi-path
(ECMP) for both IPv4 and IPv6. Previously, multipath route insertion
is disallowed. For example,

	route add -net 192.103.54.0/24 10.9.44.1
	route add -net 192.103.54.0/24 10.9.44.2

The second route insertion will trigger an error message of
"add net 192.103.54.0/24: gateway 10.2.5.2: route already in table"

Multiple default routes can also be inserted. Here is the netstat
output:

default		10.2.5.1	UGS	0	3074	bge0 =>
default		10.2.5.2	UGS	0	0	bge0

When multipath routes exist, the "route delete" command requires
a specific gateway to be specified or else an error message would
be displayed. For example,

	route delete default

would fail and trigger the following error message:

"route: writing to routing socket: No such process"
"delete net default: not in table"

On the other hand,

	route delete default 10.2.5.2

would be successful: "delete net default: gateway 10.2.5.2"

One does not have to specify a gateway if there is only a single
route for a particular destination.

I need to perform more testings on address aliases and multiple
interfaces that have the same IP prefixes. This patch as it
stands today is not yet ready for prime time. Therefore, the ECMP
code fragments are fully guarded by the RADIX_MPATH macro.
Include the "options  RADIX_MPATH" in the kernel configuration
to enable this feature.

Reviewed by:	robert, sam, gnn, julian, kmacy
2008-04-13 05:45:14 +00:00
Warner Losh
c398230b64 /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
Luigi Rizzo
485b4cba56 + move MKGet()/MKFree() into the only file that can use them.
+ remove useless wrappers around bcmp(), bcopy(), bzero().
  The code assumes that bcmp() returns 0 if the size is 0, but
  this is true for both the libc and the libkern versions.

+ nuke Bcmp, Bzero, Bcopy from radix.h now that nobody uses them anymore.
2004-04-18 11:48:35 +00:00
Warner Losh
f36cfd49ad Remove advertising clause from University of California Regent's
license, per letter dated July 22, 1999 and email from Peter Wemm,
Alan Cox and Robert Watson.

Approved by: core, peter, alc, rwatson
2004-04-07 20:46:16 +00:00
Sam Leffler
91a9d708ba add R_Zalloc definition that returns pre-zero'd memory 2003-08-19 17:23:07 +00:00
Jeffrey Hsu
8480e03dd7 Make the radix tree code compilable in userland. Requested by ru.
Some style fixes requested by bde.
2003-02-08 01:44:09 +00:00
Jeffrey Hsu
93f798891a Avoid lock order reversal by expanding the scope of the
AF_INET radix tree lock to cover the ARP data structures.
2003-01-28 20:22:19 +00:00
Jeffrey Hsu
956b0b653c SMP locking for radix nodes. 2002-12-24 03:03:39 +00:00
Bosko Milekic
86fea6be59 o Untangle the confusion with the malloc flags {M_WAITOK, M_NOWAIT} and
the mbuf allocator flags {M_TRYWAIT, M_DONTWAIT}.
o Fix a bpf_compat issue where malloc() was defined to just call
  bpf_alloc() and pass the 'canwait' flag(s) along.  It's been changed
  to call bpf_alloc() but pass the corresponding M_TRYWAIT or M_DONTWAIT
  flag (and only one of those two).

Submitted by: Hiten Pandya <hiten@unixdaemons.com> (hiten->commit_count++)
2002-12-19 22:58:27 +00:00
Alfred Perlstein
929ddbbb89 Remove __P. 2002-03-19 21:54:18 +00:00
Garrett Wollman
1a11e63e1d A couple months ago, Kirk and I were doing a walkthrough of the radix-tree
search routine, and scratching our heads over why it was so obfuscated.
This delta fixes a number of confusing style bugs and renames several
structure members to have more meaningful names.  There remain a number
of odd control-flow structures.  These changes do not affect the generated
code.
2000-04-23 04:00:00 +00:00
Peter Wemm
664a31e496 Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"
is an application space macro and the applications are supposed to be free
to use it as they please (but cannot).  This is consistant with the other
BSD's who made this change quite some time ago.  More commits to come.
1999-12-29 04:46:21 +00:00
Peter Wemm
c3aac50f28 $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
Bruce Evans
a0f1e323d0 Unstaticized rn_delete() and rn_lookup(). They are used in dark corners
of netatalk (if NETATALKDEBUG is configured).

Removed stray semicolons.
1997-11-24 13:50:24 +00:00
Poul-Henning Kamp
a1c995b626 Last major round (Unless Bruce thinks of somthing :-) of malloc changes.
Distribute all but the most fundamental malloc types.  This time I also
remembered the trick to making things static:  Put "static" in front of
them.

A couple of finer points by:	bde
1997-10-12 20:26:33 +00:00
Bruce Evans
a3199409b8 Some staticized variables were still declared to be extern. 1997-09-07 08:49:04 +00:00
Peter Wemm
6875d25465 Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are not
ready for it yet.
1997-02-22 09:48:43 +00:00
Jordan K. Hubbard
1130b656e5 Make the long-awaited change from $Id$ to $FreeBSD$
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore.  This update would have been
insane otherwise.
1997-01-14 07:20:47 +00:00
Poul-Henning Kamp
f708ef1b9e Another mega commit to staticize things. 1995-12-14 09:55:16 +00:00
Paul Traina
2f688f82da Incorporate new radix code from UCB. This fixes the orphaned mask bugs.
This submission was done by hand-applying FreeBSD local modifications on
top of the UCB code, rather than trying to patch the UCB code in on top
of the FreeBSD code due to the extensive changes.

Reviewed by:	pst	(been handling 30k routes for 4+ months)
Obtained from:	Sklower/Woody/Honing/Traina (8.4 UCB release)
1995-04-28 23:01:37 +00:00
Garrett Wollman
c2bed6a371 Better fix for the deletion of parents of cloned routes problem,
superseding the `nextchild' hack.  This also provides a way
forward to fix RTM_CHANGE and RTM_ADD as well.
1995-03-20 21:30:21 +00:00
Bruce Evans
b5e8ce9f12 Add and move declarations to fix all of the warnings from `gcc -Wimplicit'
(except in netccitt, netiso and netns) and most of the warnings from
`gcc -Wnested-externs'.  Fix all the bugs found.  There were no serious
ones.
1995-03-16 18:17:34 +00:00
Bruce Evans
67df6ed30c if.h:
Declare a complete prototype for the function pointer *ifa_rtrequest.

radix.h:
Declare a complete prototype for the function pointer *rnh_walktree
and for the function rn_walktree.

Uniformize idempotency ifdef.
1994-11-14 14:06:06 +00:00
Garrett Wollman
5c2dae8edc Add code to be a bit smarter about IP routes, conditioned on the option
IN_RMX.  (Eventually this will be standard, but I just wrote the code today
and don't want to break anyone.)
1994-11-02 04:41:39 +00:00
Paul Richards
cea1da3be2 Make idempotent.
Submitted by:	Paul
1994-08-21 05:11:48 +00:00
David Greenman
3c4dd3568f Added $Id$ 1994-08-02 07:55:43 +00:00
Rodney W. Grimes
df8bae1de4 BSD 4.4 Lite Kernel Sources 1994-05-24 10:09:53 +00:00