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361,091 commits

Author SHA1 Message Date
Alex Elder
cd323ac0eb rbd: end request on error in rbd_do_request() caller
Only one of the three callers of rbd_do_request() provide a
collection structure to aggregate status.

If an error occurs in rbd_do_request(), have the caller
take care of calling rbd_coll_end_req() if necessary in
that one spot.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
2013-01-17 15:33:41 -06:00
Ben Widawsky
00fc2c3c53 drm/i915: Remove gtt_mappable_total
With the assertion from the previous patch in place, it should be safe
to get rid gtt_mappable_total. Keeps things saner to not have to track
the same info in two places.

In order to keep the diff as simple as possible and keep with the
existing gtt_setup semantics we opt to keep gtt_mappable_end. It's not
as consistent with the 'total' used in the previous patch, but that can
be fixed later.

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
[Ben modified commit message]
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-01-17 22:33:41 +01:00
Ben Widawsky
35451cb6fb drm/i915: Mappable_end can't ever be > end
Both DRI1 and DRI2 can never specify a mappable size which goes past the
GTT size.  Don't pretend otherwise.

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-01-17 22:33:02 +01:00
Lijo Antony
b3d07cf5a1 Staging: speakup: kobjects.c: checkpatch.pl fixes
Fixed two "line over 80 characters" warnings reported by checkpatch.pl

Signed-off-by: Lijo Antony <lijo.kernel@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 13:31:07 -08:00
Lijo Antony
ed52565565 Staging: speakup: keyhelp.c: checkpatch.pl fixes
Breaking 2 lines to fit 80 char limit

Signed-off-by: Lijo Antony <lijo.kernel@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 13:31:07 -08:00
Lijo Antony
5c75af1a45 Staging: speakup: buffers.c: checkpatch.pl fixes
Fixed two camel case issues.

Signed-off-by: Lijo Antony <lijo.kernel@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 13:31:07 -08:00
Ben Widawsky
c1fc6521ef drm/i915: Kill gtt_end
It's duplicated in the more useful gtt_total.

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-01-17 22:27:31 +01:00
Ville Syrjälä
c70af1e4b6 drm/i915: Fix SPRITE0_FLIP_DONE_INT_EN_VLV and SPRITE0_FLIPDONE_INT_STATUS_VLV
Fix up some copypaste errors in the PIPESTAT register for VLV.

SPRITE0_FLIP_DONE_INT_EN_VLV is bit 22, not bit 26.

SPRITE0_FLIPDONE_INT_STATUS_VLV is bit 14, not bit 15.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-01-17 22:23:48 +01:00
Chris Wilson
eef90ccb8a drm/i915: Use the reloc.handle as an index into the execbuffer array
Using copywinwin10 as an example that is dependent upon emitting a lot
of relocations (2 per operation), we see improvements of:

c2d/gm45: 618000.0/sec to 623000.0/sec.
i3-330m: 748000.0/sec to 789000.0/sec.

(measured relative to a baseline with neither optimisations applied).

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-01-17 22:23:47 +01:00
Daniel Vetter
ed5982e6ce drm/i915: Allow userspace to hint that the relocations were known
Userspace is able to hint to the kernel that its command stream and
auxiliary state buffers already hold the correct presumed addresses and
so the relocation process may be skipped if the kernel does not need to
move any buffers in preparation for the execbuffer. Thus for the common
case where the allotment of buffers is static between batches, we can
avoid the overhead of individually checking the relocation entries.

Note that this requires userspace to supply the domain tracking and
requests for workarounds itself that would otherwise be computed based
upon the relocation entries.

Using copywinwin10 as an example that is dependent upon emitting a lot
of relocations (2 per operation), we see improvements of:

c2d/gm45: 618000.0/sec to 632000.0/sec.
i3-330m: 748000.0/sec to 830000.0/sec.

(measured relative to a baseline with neither optimisations applied).

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Imre Deak <imre.deak@intel.com>
[danvet: Fixup merge conflict in userspace header due to different
baseline trees.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-01-17 22:23:36 +01:00
Cong Ding
cce17b457b staging: omapdrm/omap_gem_dmabuf.c: fix memory leakage
There is a memory leakage in variable sg if it goes to error.

Signed-off-by: Cong Ding <dinggnu@gmail.com>
Signed-off-by: Rob Clark <rob@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 13:19:55 -08:00
Fabio Estevam
4ee723a96f staging: imx-drm: ipu-common: Remove unused variable
Fix the following warning when building with W=1 option:

drivers/staging/imx-drm/ipu-v3/ipu-common.c: In function 'ipu_remove':
drivers/staging/imx-drm/ipu-v3/ipu-common.c:1145:19: warning: variable 'res' set but not used [-Wunused-but-set-variable]

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 13:19:55 -08:00
Andy Gross
c6b7ae5550 drm/omap: Add OMAP5 support
Add support for OMAP5 processor.  The main differences are that the OMAP5
has 2 containers, one for 1D and one for 2D.  Each container is 128MiB in
size.

Signed-off-by: Andy Gross <andy.gross@ti.com>
Signed-off-by: Rob Clark <rob@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 13:19:55 -08:00
Andy Gross
e78edba113 drm/omap: Add PM capabilities
Added power management capabilities into the omapdrm and DMM drivers.
During suspend, we don't need to do anything to maintain the state of
the LUT.  We have all the necessary information to recreate the mappings
of the GEM object list maintained by the omapdrm driver.

On resume, the DMM resume handler will first reprogram the LUT to point
to the dummy page.  The subsequent resume handler in the omapdrm will call
into the DMM and reprogram each of the buffer objects.  This will ensure
that all of the necessary objects will be pinned into the DMM properly.

Order of suspend/resume handlers is done by device creation.  We create
the DMM device before the omapdrm, so the correct order is maintained.

Signed-off-by: Andy Gross <andy.gross@ti.com>
Signed-off-by: Rob Clark <rob@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 13:19:55 -08:00
Devendra Naga
40a0136b5a staging: vt6655: no braces needed for single statement if , for blocks
there is only one line inside the if and for blocks, so the braces are
not needed

Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 13:17:03 -08:00
Devendra Naga
d1b46e75fb staging: vt6655: s/kmalloc + memset / kzalloc
replace kmalloc and subsequent memset with kzalloc
and drop the null checks and casts and clean the coding style a bit too

Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 13:17:03 -08:00
Devendra Naga
8473f6544e staging: vt6655: checkpatch fixes
put opening brace in a new line
4 ---> 8 spaces

Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 13:17:03 -08:00
Devendra Naga
b5b384b727 staging: vt6655: s/kmalloc + memset/kzalloc in alloc_rd_info
replace kmalloc and memset if the pointer is valid with kzalloc,
and remove the check around the null pointer cases as we dont need it.

Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 13:17:03 -08:00
Greg Kroah-Hartman
53a9c87e7e Revert "drivers: base: Convert print_symbol to %pSR"
This reverts commit e797986593 as %pSR
isn't in the tree yet.

Cc: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 13:10:23 -08:00
Greg Kroah-Hartman
595e0eb067 Revert "sysfs: Convert print_symbol to %pSR"
This reverts commit 6ad58fa82d as %pSR
isn't in the tree yet.

Cc: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 13:09:57 -08:00
Ben Hutchings
1ee4c55fc9 staging: vt6656: Fix inconsistent structure packing
vt6656 has several headers that use the #pragma pack(1) directive to
enable structure packing, but never disable it.  The layout of
structures defined in other headers can then depend on which order the
various headers are included in, breaking the One Definition Rule.

In practice this resulted in crashes on x86_64 until the order of header
inclusion was changed for some files in commit 11d404cb56 ('staging:
vt6656: fix headers and add cfg80211.').  But we need a proper fix that
won't be affected by future changes to the order of inclusion.

This removes the #pragma pack(1) directives and adds __packed to the
structure definitions for which packing appears to have been intended.

Reported-and-tested-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 13:08:32 -08:00
Chris Wilson
bcffc3faa6 drm/i915: Move the execbuffer objects list from the stack into the tracker
Instead of passing around the eb-objects hashtable and a separate object
list, we can include the object list into the eb-objects structure for
convenience.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-01-17 22:08:02 +01:00
Chris Wilson
3b96eff447 drm/i915: Take the handle idr spinlock once for looking up the exec objects
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-01-17 22:08:01 +01:00
Chris Wilson
419fa72a19 drm/i915: Mark a temporary allocation for copy-from-user as such
The difference is that the kernel will then know that this memory will
be reclaimable in the near future.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-01-17 22:08:00 +01:00
Chris Wilson
43e28f092b drm/i915: Bail if we attempt to allocate pages for a purged object
Move the existing checking inside bind_to_gtt() to the more appropriate
layer in order to prevent recreation of the pages after they have been
explicitly truncated.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-01-17 22:07:59 +01:00
Chris Wilson
dd624afd53 drm/i915: Add a debug interface to forcibly evict and shrink our object caches
As a means to investigate some bad system behaviour related to the
purging of the active, inactive and unbound lists, it is useful to be
able to manually control when those lists should be cleared.

v2: use _safe list iterators as we kick objects from the list as we
walk.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: Add a small comment explaining why we don't need to check and
wait for gpu resets, acked by Chris on irc.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-01-17 22:07:57 +01:00
Imre Deak
0fa8779651 drm/i915: use gtt_get_size() instead of open coding it
Signed-off-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-01-17 22:07:56 +01:00
Imre Deak
56c844e539 drm/i915: merge {i965, sandybridge}_write_fence_reg()
The two functions are rather similar, so merge them.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-01-17 22:07:55 +01:00
Imre Deak
d865110cc2 drm/i915: merge get_gtt_alignment/get_unfenced_gtt_alignment()
The two functions are rather similar, so merge them.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-01-17 22:07:54 +01:00
Egbert Eich
af5163acd8 drm/i915: Remove pch_rq_mask from struct drm_i915_private.
This variable is only used locally in the irq postinstall
functions for ivybridge and ironlake.

Signed-off-by: Egbert Eich <eich@suse.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-01-17 22:07:52 +01:00
Daniel Vetter
2c10d57116 drm/i915: wake up all pageflip waiters
Otherwise it seems like we can get stuck with concurrent waiters.
Right now this /shouldn't/ be a problem, since all pending pageflip
waiters are serialized by the one mode_config.mutex, so there's at
most on waiter. But better paranoid than sorry, since this is tricky
code.

v2: WARN_ON(waitqueue_active) before waiting, as suggested by Chris
Wilson.

Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-01-17 22:07:51 +01:00
Alex Elder
8295cda7ce rbd: encapsulate handling for a single request
In rbd_rq_fn(), requests are fetched from the block layer and each
request is processed, looping through the request's list of bio's
until they've all been consumed.

Separate the handling for a single request into its own function to
make it a bit easier to see what's going on.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
2013-01-17 15:04:47 -06:00
Ming Lei
190888ac01 driver core: fix possible missing of device probe
Inside bus_add_driver(), one device might be added(device_add()) into
the bus or probed which is triggered by deferred probe
just after completing of driver_attach() and before
'klist_add_tail(&priv->knode_bus, &bus->p->klist_drivers)',
so the device won't be probed by this driver.

This patch moves the below line

	'klist_add_tail(&priv->knode_bus, &bus->p->klist_drivers)'

before driver_attach() inside bus_add_driver() to fix the
problem.

Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 13:02:11 -08:00
Sasha Levin
1884bd4b14 debugfs: remove redundant initialization of dentry
We already initialize it to NULL when declaring it, no need to do
that twice.

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 13:02:08 -08:00
Marko Katic
2202d4e81b Documentation: devres: add PHY get/put functions to list of supported calls
Signed-off-by: Marko Katic <dromede.gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 12:57:07 -08:00
Joe Perches
e797986593 drivers: base: Convert print_symbol to %pSR
Use the new vsprintf extension to avoid any possible
message interleaving.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 12:57:07 -08:00
Joe Perches
6ad58fa82d sysfs: Convert print_symbol to %pSR
Use the new vsprintf extension to avoid any possible
message interleaving.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 12:57:07 -08:00
Borislav Petkov
f5e097f046 dma_buf: Cleanup dma_buf_fd
Remove redundant 'error' variable.

Signed-off-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 12:57:07 -08:00
Peter Senna Tschudin
1a5d76dbe8 drivers/base/core.c: Remove two unused variables and two useless calls to kfree
old_class_name, and new_class_name are never used. This patch remove the
declaration and calls to kfree.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r1 forall@
type T; identifier i;
@@
* T *i = NULL;
  ... when != i
* kfree(i);
// </smpl>

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 12:57:06 -08:00
Bin Wang
6b8fbde418 sysfs: Fixed a trailing white space error
This patch removes the trailing white space in fs/sysfs/mount.c.

Signed-off-by: Bin Wang <wbin00@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 12:54:47 -08:00
Alex Elder
8986cb37b1 rbd: be picky about osd request status type
The result field in a ceph osd reply header is a signed 32-bit type,
but rbd code often casually uses int to represent it.

The following changes the types of variables that handle this result
value to be "s32" instead of "int" to be completely explicit about
it.  Only at the point we pass that result to __blk_end_request()
does the type get converted to the plain old int defined for that
interface.

There is almost certainly no binary impact of this change, but I
prefer to show the exact size and signedness of the value since we
know it.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Dan Mick <dan.mick@inktank.com>
2013-01-17 14:53:20 -06:00
Alex Elder
5f29ddd4f0 rbd: standardize ceph_osd_request variable names
There are spots where a ceph_osds_request pointer variable is given
the name "req".  Since we're dealing with (at least) three types of
requests (block layer, rbd, and osd), I find this slightly
distracting.

Change such instances to use "osd_req" consistently to make the
abstraction represented a little more obvious.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Dan Mick <dan.mick@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
2013-01-17 14:53:15 -06:00
Alex Elder
725afc97c9 rbd: standardize rbd_request variable names
There are two names used for items of rbd_request structure type:
"req" and "req_data".  The former name is also used to represent
items of pointers to struct ceph_osd_request.

Change all variables that have these names so they are instead
called "rbd_req" consistently.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Dan Mick <dan.mick@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
2013-01-17 14:53:07 -06:00
Stef van Os
c3745ead19 phy/marvell: remove fiber/copper autoselect on 88e1111
Remove the code that always enables copper/fiber autoselect,
ignoring the DIS_FC strapping pin. The default value for this
register is autoselect on anyway, and if you explicitly disable
autoselect via strapping you probably really don't want
autoselect.

Signed-off-by: Stef van Os <stef.van.os@prodrive.nl>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-01-17 15:47:24 -05:00
Tyler Hicks
111d61a25e eCryptfs: Fix -Wmissing-prototypes warnings
Mark two inode operation fuctions as static. Fixes warnings when
building with W=1.

Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
2013-01-17 12:20:47 -08:00
Jim Cromie
18c216c53b dynamic_debug: add pr_errs before -EINVALs
Ma noted that dynamic-debug is silent about many query errors, so add
pr_err()s to explain those errors, and tweak a few others.  Also parse
flags 1st, so that match-spec errs are slightly clearer.

CC: Jianpeng Ma <majianpeng@gmail.com>
CC: Joe Perches <joe@perches.com>
Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 12:19:09 -08:00
Vladimir Kondratiev
7a555613eb dynamic_debug: dynamic hex dump
Introduce print_hex_dump_debug() that can be dynamically controlled, similar to
pr_debug.

Also, make print_hex_dump_bytes() dynamically controlled

Implement only 'p' flag (_DPRINTK_FLAGS_PRINT) to keep it simple since hex dump prints
multiple lines and long prefix would impact readability.
To provide line/file etc. information, use pr_debug or similar
before/after print_hex_dump_debug()

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 12:19:09 -08:00
Joe Perches
f657fd21e1 dynamic_debug: Fix vpr_<foo> logging styles
vpr_info_dq should be a function and vpr_info should have
a do {} while (0)

Add missing newlines to pr_<level>s.

Miscellaneous neatening too.
braces, coalescing formats, alignments, etc...

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-17 12:18:07 -08:00
Alex Elder
935dc89f3e rbd: add warnings to rbd_dev_probe_update_spec()
Josh suggested adding warnings to this function to help users
diagnose problems.

Other than memory allocatino errors, there are two places where
errors can be returned.  Both represent problems that should
have been caught earlier, and as such might well have been
handled with BUG_ON() calls.  But if either ever did manage to
happen, it will be reported.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
2013-01-17 14:12:46 -06:00
Kevin Cernekee
7266507d89 netfilter: nf_ct_sip: support Cisco 7941/7945 IP phones
Most SIP devices use a source port of 5060/udp on SIP requests, so the
response automatically comes back to port 5060:

    phone_ip:5060 -> proxy_ip:5060   REGISTER
    proxy_ip:5060 -> phone_ip:5060   100 Trying

The newer Cisco IP phones, however, use a randomly chosen high source
port for the SIP request but expect the response on port 5060:

    phone_ip:49173 -> proxy_ip:5060  REGISTER
    proxy_ip:5060 -> phone_ip:5060   100 Trying

Standard Linux NAT, with or without nf_nat_sip, will send the reply back
to port 49173, not 5060:

    phone_ip:49173 -> proxy_ip:5060  REGISTER
    proxy_ip:5060 -> phone_ip:49173  100 Trying

But the phone is not listening on 49173, so it will never see the reply.

This patch modifies nf_*_sip to work around this quirk by extracting
the SIP response port from the Via: header, iff the source IP in the
packet header matches the source IP in the SIP request.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2013-01-17 21:12:44 +01:00