Commit graph

547944 commits

Author SHA1 Message Date
Eric W. Biederman
ef7c599d91 ipvs: Pass ipvs not net to ip_vs_flush
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
2015-09-24 09:34:35 +09:00
Eric W. Biederman
5060bd8307 ipvs: Pass ipvs not net to ip_vs_add_service
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
2015-09-24 09:34:35 +09:00
Eric W. Biederman
cd58278bd4 ipvs: Cache ipvs in ip_vs_genl_set_cmd
Compute ipvs early in ip_vs_genl_set_cmd and use the cached value to
access ipvs->sync_state.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
2015-09-24 09:34:35 +09:00
Eric W. Biederman
8e743f1b45 ipvs: Pass ipvs not net to ip_vs_dest_trash_expire
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
2015-09-24 09:34:34 +09:00
Eric W. Biederman
79ac82e0aa ipvs: Pass ipvs not net to __ip_vs_del_dest
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
2015-09-24 09:34:34 +09:00
Eric W. Biederman
6c0e14f507 ipvs: Pass ipvs not net to ip_vs_trash_cleanup
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
2015-09-24 09:34:34 +09:00
Eric W. Biederman
dc2add6f2e ipvs: Pass ipvs not net to ip_vs_find_dest
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
2015-09-24 09:34:34 +09:00
Eric W. Biederman
48aed1b029 ipvs: Pass ipvs not net to ip_vs_has_real_service
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
2015-09-24 09:34:34 +09:00
Eric W. Biederman
0a4fd6ce92 ipvs: Pass ipvs not net to ip_vs_service_find
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
2015-09-24 09:34:34 +09:00
Eric W. Biederman
bb2e2a8c95 ipvs: Pass ipvs not net to __ip_vs_service_find
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
2015-09-24 09:34:34 +09:00
Eric W. Biederman
ba61f39034 ipvs: Pass ipvs not net to ip_vs_svc_hashkey
Use the address of ipvs not the address of net when computing the
hash value.  This removes an unncessary dependency on struct net.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
2015-09-24 09:34:34 +09:00
Eric W. Biederman
1ed8b94780 ipvs: Pass ipvs not net to __ip_vs_svc_fwm_find
ipvs is what the code actually wants to use.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
2015-09-24 09:34:33 +09:00
Eric W. Biederman
f6510b245e ipvs: Pass ipvs not net to ip_vs_svc_fwm_hashkey
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
2015-09-24 09:34:33 +09:00
Eric W. Biederman
3109d2f2d1 ipvs: Store ipvs not net in struct ip_vs_service
In practice struct netns_ipvs is as meaningful as struct net and more
useful as it holds the ipvs specific data.  So store a pointer to
struct netns_ipvs.

Update the accesses of param->net to access param->ipvs->net instead.

In functions where we are searching for an svc and filtering by net
filter by ipvs instead.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
2015-09-24 09:34:33 +09:00
Eric W. Biederman
19913dec1b ipvs: Pass ipvs not net to ip_vs_fill_conn
ipvs is what is actually desired so change the parameter and the modify
the callers to pass struct netns_ipvs.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
2015-09-24 09:34:33 +09:00
Eric W. Biederman
e64e2b460c ipvs: Store ipvs not net in struct ip_vs_conn_param
In practice struct netns_ipvs is as meaningful as struct net and more
useful as it holds the ipvs specific data.  So store a pointer to
struct netns_ipvs.

Update the accesses of param->net to access param->ipvs->net instead.

When lookup up struct ip_vs_conn in a hash table replace comparisons
of cp->net with comparisons of cp->ipvs which is possible
now that ipvs is present in ip_vs_conn_param.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
2015-09-24 09:34:33 +09:00
Eric W. Biederman
58dbc6f260 ipvs: Store ipvs not net in struct ip_vs_conn
In practice struct netns_ipvs is as meaningful as struct net and more
useful as it holds the ipvs specific data.  So store a pointer to
struct netns_ipvs.

Update the accesses of conn->net to access conn->ipvs->net instead.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
2015-09-24 09:34:33 +09:00
Eric W. Biederman
d484fc3812 ipvs: Use state->net in the ipvs forward functions
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
2015-09-24 09:34:33 +09:00
Eric W. Biederman
717e917ddf ipvs: Don't use current in proc_do_defense_mode
Instead store ipvs in extra2 so that proc_do_defense_mode can easily
find the ipvs that it's value is associated with.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
2015-09-24 09:34:33 +09:00
Eric W. Biederman
1daea8ed16 ipvs: Hoist computation of ipvs earlier in sctp_conn_schedule
The addition of sysctl_sloppy_sctp in sctp_conn_schedule resulted
in a use of ipvs before it was computed.  Hoist the computation of
ipvs earlier to avoid this problem.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
2015-09-24 09:34:32 +09:00
John W. Linville
7bbe33ff18 geneve: use network byte order for destination port config parameter
This is primarily for consistancy with vxlan and other tunnels which
use network byte order for similar parameters.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-23 15:41:04 -07:00
Max Filippov
06e60e5912 net/ethoc: support big-endian register layout
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-23 15:33:15 -07:00
Dave Airlie
e4b35f952b Merge branch 'drm-fixes-4.3' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
radeon and amdgpu fixes for 4.3.  It's a bit bigger than usual since
it's 3 weeks worth of fixes since I was on vacation, then at XDC.
- lots of stability fixes
- suspend and resume fixes
- GPU scheduler fixes
- Misc other fixes

* 'drm-fixes-4.3' of git://people.freedesktop.org/~agd5f/linux: (31 commits)
  drm/radeon: add quirk for MSI R7 370
  drm/amdgpu: Sprinkle drm_modeset_lock_all to appease locking checks
  drm/radeon: Sprinkle drm_modeset_lock_all to appease locking checks
  drm/amdgpu: sync ce and me with SWITCH_BUFFER(2)
  drm/amdgpu: integer overflow in amdgpu_mode_dumb_create()
  drm/amdgpu: info leak in amdgpu_gem_metadata_ioctl()
  drm/amdgpu: integer overflow in amdgpu_info_ioctl()
  drm/amdgpu: unwind properly in amdgpu_cs_parser_init()
  drm/amdgpu: Fix max_vblank_count value for current display engines
  drm/amdgpu: use kmemdup rather than duplicating its implementation
  drm/amdgpu: fix UVD suspend and resume for VI APU
  drm/amdgpu: fix the UVD suspend sequence order
  drm/amdgpu: make UVD handle checking more strict
  drm/amdgpu: Disable UVD PG
  drm/amdgpu: more scheduler cleanups v2
  drm/amdgpu: cleanup fence queue init v2
  drm/amdgpu: rename fence->scheduler to sched v2
  drm/amdgpu: cleanup entity init
  drm/amdgpu: refine the scheduler job type conversion
  drm/amdgpu: refine the job naming for amdgpu_job and amdgpu_sched_job
  ...
2015-09-24 08:13:34 +10:00
Andrzej Hajda
14d11b8dca drm/layerscape: fix handling fsl_dcu_drm_plane_index result
The function can return negative value.

The problem has been detected using proposed semantic patch
scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci [1].

[1]: http://permalink.gmane.org/gmane.linux.kernel/2038576

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-09-24 08:13:09 +10:00
Archit Taneja
728f86607d drm/mgag200: Fix driver_load error handling
mgag200_driver_load's error path just calls the drm driver's
driver_unload op. It isn't safe to call this because it doesn't handle
things well if driver_load fails somewhere mid way.

Replace the call to mgag200_driver_unload with a more finegrained
error handling path.

Link: http://lkml.kernel.org/r/55F6E68D.8070800@codeaurora.org
Reported-by: Ingo Molnar <mingo@kernel.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dave Airlie <airlied@gmail.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dri-devel <dri-devel@lists.freedesktop.org>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-09-24 08:10:44 +10:00
Archit Taneja
aec9e12953 drm/mgag200: Fix error handling paths in fbdev driver
Set up error handling in mgag200_fbdev_init and mgag200fb_create such that
they release the things they allocate, rather than relying on someone
calling mga_fbdev_destroy.

Based on a patch by Sudip Mukherjee <sudipm.mukherjee@gmail.com>

Link: http://lkml.kernel.org/r/55F6E68D.8070800@codeaurora.org
Reported-by: Ingo Molnar <mingo@kernel.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dave Airlie <airlied@gmail.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dri-devel <dri-devel@lists.freedesktop.org>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-09-24 08:10:41 +10:00
Dave Airlie
69e5d3f893 drm/qxl: only report first monitor as connected if we have no state
If the server isn't new enough to give us state, report the first
monitor as always connected, otherwise believe the server side.

Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-09-24 08:08:17 +10:00
Neil Armstrong
1bb6aa56bb net: davinci_emac: Add support for fixed-link PHY
In case the DaVinci Emac is directly connected to a
non-mdio PHY/device, it should be possible to provide
a fixed link configuration in the DT.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-23 15:06:27 -07:00
Shrikrishna Khare
b6bd9b5448 Driver: Vmxnet3: Extend register dump support
Signed-off-by: Shrikrishna Khare <skhare@vmware.com>
Signed-off-by: Bhavesh Davda <bhavesh@vmware.com>
Acked-by: Srividya Murali <smurali@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-23 15:06:27 -07:00
David S. Miller
6015a6c137 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue
Jeff Kirsher says:

====================
Intel Wired LAN Driver Updates 2015-09-22

This series contains updates to e1000, e1000e, igbvf, ixgbe, ixgbevf and
fm10k.

Jacob provides several updates for fm10k, which cleans up comments and
most notably a fix for a corner case issue with the PF/VF mailbox code.
The issue being fm10k_mbx_reset_work clears various states about the
mailbox, but does not clear the Tx FIFO head/tail pointers.  We also
are not able to simply clear these pointers, as we would drop
untransmitted messages without error.  Also adds support for extra debug
statistics, which provides the ability to see what the PF thinks the
VF mailboxes look like.

Don adds support for SFP+ in X550 and support for SCTP flow director
filters SCTP mask.

Francois Romieu dusts off the e1000 driver and removes some dead calls
to e1000_init_eeprom_params().

Toshiaki Makita provides three patches to enable TSO for stacked VLAN's
on e1000e, igbvf and ixgbevf.

Mark provides the first of several ixgbe updates.  First updates the
driver to accept SFP not present error for all devices, since an SFP
can still be inserted.  Adds support for SFP insertion interrupt on
X550EM devices with SPFs.  Adds I2C combined operations on X550EM
(not X550) devices.  Moved the setting of lan_id to before any I2C
eeprom access.  Lastly, set the bit bang mode in the hardware when
performing bit banding I2C operations on X550.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-23 14:52:02 -07:00
David Woodhouse
41b976414c 8139cp: Dump contents of descriptor ring on TX timeout
We are seeing unexplained TX timeouts under heavy load. Let's try to get
a better idea of what's going on.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-23 14:47:13 -07:00
David Woodhouse
7f4c685633 8139cp: Fix DMA unmapping of transmitted buffers
The low 16 bits of the 'opts1' field in the TX descriptor are supposed
to still contain the buffer length when the descriptor is handed back to
us. In practice, at least on my hardware, they don't. So stash the
original value of the opts1 field and get the length to unmap from
there.

There are other ways we could have worked out the length, but I actually
want a stash of the opts1 field anyway so that I can dump it alongside
the contents of the descriptor ring when we suffer a TX timeout.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-23 14:47:13 -07:00
David Woodhouse
0a5aeee0b7 8139cp: Reduce duplicate csum/tso code in cp_start_xmit()
We calculate the value of the opts1 descriptor field in three different
places. With two different behaviours when given an invalid packet to
be checksummed — none of them correct. Sort that out.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-23 14:47:12 -07:00
David Woodhouse
a3b804043f 8139cp: Fix TSO/scatter-gather descriptor setup
When sending a TSO frame in multiple buffers, we were neglecting to set
the first descriptor up in TSO mode.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-23 14:47:12 -07:00
David Woodhouse
26b0bad6ac 8139cp: Fix tx_queued debug message to print correct slot numbers
After a certain amount of staring at the debug output of this driver, I
realised it was lying to me.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-23 14:47:12 -07:00
David Woodhouse
aaa0062ecf 8139cp: Do not re-enable RX interrupts in cp_tx_timeout()
If an RX interrupt was already received but NAPI has not yet run when
the RX timeout happens, we end up in cp_tx_timeout() with RX interrupts
already disabled. Blindly re-enabling them will cause an IRQ storm.

(This is made particularly horrid by the fact that cp_interrupt() always
returns that it's handled the interrupt, even when it hasn't actually
done anything. If it didn't do that, the core IRQ code would have
detected the storm and handled it, I'd have had a clear smoking gun
backtrace instead of just a spontaneously resetting router, and I'd have
at *least* two days of my life back. Changing the return value of
cp_interrupt() will be argued about under separate cover.)

Unconditionally leave RX interrupts disabled after the reset, and
schedule NAPI to check the receive ring and re-enable them.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-23 14:47:12 -07:00
David S. Miller
3c6cb3acee Merge branch 'netcp-fixes'
Murali Karicheri says:

====================
net: netcp: a set of bug fixes

This patch series fixes a set of issues in netcp driver seen during internal
testing of the driver. While at it, do some clean up as well.

The fixes are tested on K2HK, K2L and K2E EVMs and the boot up logs can be
seen at

 http://pastebin.ubuntu.com/12533100/
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-23 14:37:38 -07:00
Karicheri, Muralidharan
8ceaf361ff net: netcp: fix deadlock reported by lockup detector
A deadlock trace is seen in netcp driver with lockup detector enabled.
The trace log is provided below for reference. This patch fixes the
bug by removing the usage of netcp_modules_lock within ndo_ops functions.
ndo_{open/close/ioctl)() is already called with rtnl_lock held. So there
is no need to hold another mutex for serialization across processes on
multiple cores.  So remove use of netcp_modules_lock mutex from these
ndo ops functions.

ndo_set_rx_mode() shouldn't be using a mutex as it is called from atomic
context. In the case of ndo_set_rx_mode(), there can be call to this API
without rtnl_lock held from an atomic context. As the underlying modules
are expected to add address to a hardware table, it is to be protected
across concurrent updates and hence a spin lock is used to synchronize
the access. Same with ndo_vlan_rx_add_vid() & ndo_vlan_rx_kill_vid().

Probably the netcp_modules_lock is used to protect the module not being
removed as part of rmmod. Currently this is not fully implemented and
assumes the interface is brought down before doing rmmod of modules.
The support for rmmmod while interface is up is expected in a future
patch set when additional modules such as pa, qos are added. For now
all of the tests such as if up/down, reboot, iperf works fine with this
patch applied.

Deadlock trace seen with lockup detector enabled is shown below for
reference.

[   16.863014] ======================================================
[   16.869183] [ INFO: possible circular locking dependency detected ]
[   16.875441] 4.1.6-01265-gfb1e101 #1 Tainted: G        W
[   16.881176] -------------------------------------------------------
[   16.887432] ifconfig/1662 is trying to acquire lock:
[   16.892386]  (netcp_modules_lock){+.+.+.}, at: [<c03e8110>]
netcp_ndo_open+0x168/0x518
[   16.900321]
[   16.900321] but task is already holding lock:
[   16.906144]  (rtnl_mutex){+.+.+.}, at: [<c053a418>] devinet_ioctl+0xf8/0x7e4
[   16.913206]
[   16.913206] which lock already depends on the new lock.
[   16.913206]
[   16.921372]
[   16.921372] the existing dependency chain (in reverse order) is:
[   16.928844]
-> #1 (rtnl_mutex){+.+.+.}:
[   16.932865]        [<c06023f0>] mutex_lock_nested+0x68/0x4a8
[   16.938521]        [<c04c5758>] register_netdev+0xc/0x24
[   16.943831]        [<c03e65c0>] netcp_module_probe+0x214/0x2ec
[   16.949660]        [<c03e8a54>] netcp_register_module+0xd4/0x140
[   16.955663]        [<c089654c>] keystone_gbe_init+0x10/0x28
[   16.961233]        [<c000977c>] do_one_initcall+0xb8/0x1f8
[   16.966714]        [<c0867e04>] kernel_init_freeable+0x148/0x1e8
[   16.972720]        [<c05f9994>] kernel_init+0xc/0xe8
[   16.977682]        [<c0010038>] ret_from_fork+0x14/0x3c
[   16.982905]
-> #0 (netcp_modules_lock){+.+.+.}:
[   16.987619]        [<c006eab0>] lock_acquire+0x118/0x320
[   16.992928]        [<c06023f0>] mutex_lock_nested+0x68/0x4a8
[   16.998582]        [<c03e8110>] netcp_ndo_open+0x168/0x518
[   17.004064]        [<c04c48f0>] __dev_open+0xa8/0x10c
[   17.009112]        [<c04c4b74>] __dev_change_flags+0x94/0x144
[   17.014853]        [<c04c4c3c>] dev_change_flags+0x18/0x48
[   17.020334]        [<c053a9fc>] devinet_ioctl+0x6dc/0x7e4
[   17.025729]        [<c04a59ec>] sock_ioctl+0x1d0/0x2a8
[   17.030865]        [<c0142844>] do_vfs_ioctl+0x41c/0x688
[   17.036173]        [<c0142ae4>] SyS_ioctl+0x34/0x5c
[   17.041046]        [<c000ff60>] ret_fast_syscall+0x0/0x54
[   17.046441]
[   17.046441] other info that might help us debug this:
[   17.046441]
[   17.054434]  Possible unsafe locking scenario:
[   17.054434]
[   17.060343]        CPU0                    CPU1
[   17.064862]        ----                    ----
[   17.069381]   lock(rtnl_mutex);
[   17.072522]                                lock(netcp_modules_lock);
[   17.078875]                                lock(rtnl_mutex);
[   17.084532]   lock(netcp_modules_lock);
[   17.088366]
[   17.088366]  *** DEADLOCK ***
[   17.088366]
[   17.094279] 1 lock held by ifconfig/1662:
[   17.098278]  #0:  (rtnl_mutex){+.+.+.}, at: [<c053a418>]
devinet_ioctl+0xf8/0x7e4
[   17.105774]
[   17.105774] stack backtrace:
[   17.110124] CPU: 1 PID: 1662 Comm: ifconfig Tainted: G        W
4.1.6-01265-gfb1e101 #1
[   17.118637] Hardware name: Keystone
[   17.122123] [<c00178e4>] (unwind_backtrace) from [<c0013cbc>]
(show_stack+0x10/0x14)
[   17.129862] [<c0013cbc>] (show_stack) from [<c05ff450>]
(dump_stack+0x84/0xc4)
[   17.137079] [<c05ff450>] (dump_stack) from [<c0068e34>]
(print_circular_bug+0x210/0x330)
[   17.145161] [<c0068e34>] (print_circular_bug) from [<c006ab7c>]
(validate_chain.isra.35+0xf98/0x13ac)
[   17.154372] [<c006ab7c>] (validate_chain.isra.35) from [<c006da60>]
(__lock_acquire+0x52c/0xcc0)
[   17.163149] [<c006da60>] (__lock_acquire) from [<c006eab0>]
(lock_acquire+0x118/0x320)
[   17.171058] [<c006eab0>] (lock_acquire) from [<c06023f0>]
(mutex_lock_nested+0x68/0x4a8)
[   17.179140] [<c06023f0>] (mutex_lock_nested) from [<c03e8110>]
(netcp_ndo_open+0x168/0x518)
[   17.187484] [<c03e8110>] (netcp_ndo_open) from [<c04c48f0>]
(__dev_open+0xa8/0x10c)
[   17.195133] [<c04c48f0>] (__dev_open) from [<c04c4b74>]
(__dev_change_flags+0x94/0x144)
[   17.203129] [<c04c4b74>] (__dev_change_flags) from [<c04c4c3c>]
(dev_change_flags+0x18/0x48)
[   17.211560] [<c04c4c3c>] (dev_change_flags) from [<c053a9fc>]
(devinet_ioctl+0x6dc/0x7e4)
[   17.219729] [<c053a9fc>] (devinet_ioctl) from [<c04a59ec>]
(sock_ioctl+0x1d0/0x2a8)
[   17.227378] [<c04a59ec>] (sock_ioctl) from [<c0142844>]
(do_vfs_ioctl+0x41c/0x688)
[   17.234939] [<c0142844>] (do_vfs_ioctl) from [<c0142ae4>]
(SyS_ioctl+0x34/0x5c)
[   17.242242] [<c0142ae4>] (SyS_ioctl) from [<c000ff60>]
(ret_fast_syscall+0x0/0x54)
[   17.258855] netcp-1.0 2620110.netcp eth0: Link is Up - 1Gbps/Full - flow
control off
[   17.271282] BUG: sleeping function called from invalid context at
kernel/locking/mutex.c:616
[   17.279712] in_atomic(): 1, irqs_disabled(): 0, pid: 1662, name: ifconfig
[   17.286500] INFO: lockdep is turned off.
[   17.290413] Preemption disabled at:[<  (null)>]   (null)
[   17.295728]
[   17.297214] CPU: 1 PID: 1662 Comm: ifconfig Tainted: G        W
4.1.6-01265-gfb1e101 #1
[   17.305735] Hardware name: Keystone
[   17.309223] [<c00178e4>] (unwind_backtrace) from [<c0013cbc>]
(show_stack+0x10/0x14)
[   17.316970] [<c0013cbc>] (show_stack) from [<c05ff450>]
(dump_stack+0x84/0xc4)
[   17.324194] [<c05ff450>] (dump_stack) from [<c06023b0>]
(mutex_lock_nested+0x28/0x4a8)
[   17.332112] [<c06023b0>] (mutex_lock_nested) from [<c03e9840>]
(netcp_set_rx_mode+0x160/0x210)
[   17.340724] [<c03e9840>] (netcp_set_rx_mode) from [<c04c483c>]
(dev_set_rx_mode+0x1c/0x28)
[   17.348982] [<c04c483c>] (dev_set_rx_mode) from [<c04c490c>]
(__dev_open+0xc4/0x10c)
[   17.356724] [<c04c490c>] (__dev_open) from [<c04c4b74>]
(__dev_change_flags+0x94/0x144)
[   17.364729] [<c04c4b74>] (__dev_change_flags) from [<c04c4c3c>]
(dev_change_flags+0x18/0x48)
[   17.373166] [<c04c4c3c>] (dev_change_flags) from [<c053a9fc>]
(devinet_ioctl+0x6dc/0x7e4)
[   17.381344] [<c053a9fc>] (devinet_ioctl) from [<c04a59ec>]
(sock_ioctl+0x1d0/0x2a8)
[   17.388994] [<c04a59ec>] (sock_ioctl) from [<c0142844>]
(do_vfs_ioctl+0x41c/0x688)
[   17.396563] [<c0142844>] (do_vfs_ioctl) from [<c0142ae4>]
(SyS_ioctl+0x34/0x5c)
[   17.403873] [<c0142ae4>] (SyS_ioctl) from [<c000ff60>]
(ret_fast_syscall+0x0/0x54)
[   17.413772] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
udhcpc (v1.20.2) started
Sending discover...
[   18.690666] netcp-1.0 2620110.netcp eth0: Link is Up - 1Gbps/Full - flow
control off
Sending discover...
[   22.250972] netcp-1.0 2620110.netcp eth0: Link is Up - 1Gbps/Full - flow
control off
[   22.258721] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[   22.265458] BUG: sleeping function called from invalid context at
kernel/locking/mutex.c:616
[   22.273896] in_atomic(): 1, irqs_disabled(): 0, pid: 342, name: kworker/1:1
[   22.280854] INFO: lockdep is turned off.
[   22.284767] Preemption disabled at:[<  (null)>]   (null)
[   22.290074]
[   22.291568] CPU: 1 PID: 342 Comm: kworker/1:1 Tainted: G        W
4.1.6-01265-gfb1e101 #1
[   22.300255] Hardware name: Keystone
[   22.303750] Workqueue: ipv6_addrconf addrconf_dad_work
[   22.308895] [<c00178e4>] (unwind_backtrace) from [<c0013cbc>]
(show_stack+0x10/0x14)
[   22.316643] [<c0013cbc>] (show_stack) from [<c05ff450>]
(dump_stack+0x84/0xc4)
[   22.323867] [<c05ff450>] (dump_stack) from [<c06023b0>]
(mutex_lock_nested+0x28/0x4a8)
[   22.331786] [<c06023b0>] (mutex_lock_nested) from [<c03e9840>]
(netcp_set_rx_mode+0x160/0x210)
[   22.340394] [<c03e9840>] (netcp_set_rx_mode) from [<c04c9d18>]
(__dev_mc_add+0x54/0x68)
[   22.348401] [<c04c9d18>] (__dev_mc_add) from [<c05ab358>]
(igmp6_group_added+0x168/0x1b4)
[   22.356580] [<c05ab358>] (igmp6_group_added) from [<c05ad2cc>]
(ipv6_dev_mc_inc+0x4f0/0x5a8)
[   22.365019] [<c05ad2cc>] (ipv6_dev_mc_inc) from [<c058f0d0>]
(addrconf_dad_work+0x21c/0x33c)
[   22.373460] [<c058f0d0>] (addrconf_dad_work) from [<c0042850>]
(process_one_work+0x214/0x8d0)
[   22.381986] [<c0042850>] (process_one_work) from [<c0042f54>]
(worker_thread+0x48/0x4bc)
[   22.390071] [<c0042f54>] (worker_thread) from [<c004868c>]
(kthread+0xf0/0x108)
[   22.397381] [<c004868c>] (kthread) from [<c0010038>]

Trace related to incorrect usage of mutex inside ndo_set_rx_mode

[   24.086066] BUG: sleeping function called from invalid context at
kernel/locking/mutex.c:616
[   24.094506] in_atomic(): 1, irqs_disabled(): 0, pid: 1682, name: ifconfig
[   24.101291] INFO: lockdep is turned off.
[   24.105203] Preemption disabled at:[<  (null)>]   (null)
[   24.110511]
[   24.112005] CPU: 2 PID: 1682 Comm: ifconfig Tainted: G        W
4.1.6-01265-gfb1e101 #1
[   24.120518] Hardware name: Keystone
[   24.124018] [<c00178e4>] (unwind_backtrace) from [<c0013cbc>]
(show_stack+0x10/0x14)
[   24.131772] [<c0013cbc>] (show_stack) from [<c05ff450>]
(dump_stack+0x84/0xc4)
[   24.138989] [<c05ff450>] (dump_stack) from [<c06023b0>]
(mutex_lock_nested+0x28/0x4a8)
[   24.146908] [<c06023b0>] (mutex_lock_nested) from [<c03e9840>]
(netcp_set_rx_mode+0x160/0x210)
[   24.155523] [<c03e9840>] (netcp_set_rx_mode) from [<c04c483c>]
(dev_set_rx_mode+0x1c/0x28)
[   24.163787] [<c04c483c>] (dev_set_rx_mode) from [<c04c490c>]
(__dev_open+0xc4/0x10c)
[   24.171531] [<c04c490c>] (__dev_open) from [<c04c4b74>]
(__dev_change_flags+0x94/0x144)
[   24.179528] [<c04c4b74>] (__dev_change_flags) from [<c04c4c3c>]
(dev_change_flags+0x18/0x48)
[   24.187966] [<c04c4c3c>] (dev_change_flags) from [<c053a9fc>]
(devinet_ioctl+0x6dc/0x7e4)
[   24.196145] [<c053a9fc>] (devinet_ioctl) from [<c04a59ec>]
(sock_ioctl+0x1d0/0x2a8)
[   24.203803] [<c04a59ec>] (sock_ioctl) from [<c0142844>]
(do_vfs_ioctl+0x41c/0x688)
[   24.211373] [<c0142844>] (do_vfs_ioctl) from [<c0142ae4>]
(SyS_ioctl+0x34/0x5c)
[   24.218676] [<c0142ae4>] (SyS_ioctl) from [<c000ff60>]
(ret_fast_syscall+0x0/0x54)
[   24.227156] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-23 14:37:37 -07:00
Karicheri, Muralidharan
99f8ef5dc6 net: netcp: allocate buffers to desc before re-enable interrupt
Currently netcp_rxpool_refill() that refill descriptors and attached
buffers to fdq while interrupt is enabled as part of NAPI poll. Doing
it while interrupt is disabled could be beneficial as hardware will
not be starved when CPU is busy with processing interrupt.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-23 14:37:37 -07:00
Karicheri, Muralidharan
915c585787 net: netcp: check for interface handle in netcp_module_probe()
Currently netcp_module_probe() doesn't check the return value of
of_parse_phandle() that points to the interface data for the
module and then pass the node ptr to the module which is incorrect.
Check for return value and free the intf_modpriv if there is error.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-23 14:37:37 -07:00
Karicheri, Muralidharan
e558b1fbf5 net: netcp: add error check to netcp_allocate_rx_buf()
Currently, if netcp_allocate_rx_buf() fails due no descriptors
in the rx free descriptor queue, inside the netcp_rxpool_refill() function
the iterative loop to fill buffers doesn't terminate right away. So modify
the netcp_allocate_rx_buf() to return an error code and use it break the
loop when there is error.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-23 14:37:37 -07:00
Karicheri, Muralidharan
736532a070 net: netcp: move netcp_register_interface() to after attach module
The netcp interface is not fully initialized before attach the module
to the interface. For example, the tx pipe/rx pipe is initialized
in ethss module as part of attach(). So until this is complete, the
interface can't be registered.  So move registration of interface to
net device outside the current loop that attaches the modules to the
interface.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-23 14:37:36 -07:00
Karicheri, Muralidharan
156e3c21f8 net: netcp: remove dead code from the driver
netcp_core is the first driver that will get initialized and the modules
(ethss, pa etc) will then get initialized. So the code at the end of
netcp_probe() that iterate over the modules is a dead code as the module
list will be always be empty. So remove this code.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-23 14:37:36 -07:00
WingMan Kwok
8c85151dde net: netcp: ethss: fix error in calling sgmii api with incorrect offset
On K2HK, sgmii module registers of slave 0 and 1 are mem
mapped to one contiguous block, while those of slave 2
and 3 are mapped to another contiguous block.  However,
on K2E and K2L, sgmii module registers of all slaves are
mem mapped to one contiguous block.  SGMII APIs expect
slave 0 sgmii base when API is invoked for slave 0 and 1,
and slave 2 sgmii base when invoked for other slaves.
Before this patch, slave 0 sgmii base is always passed to
sgmii API for K2E regardless which slave is the API invoked
for.  This patch fixes the problem.

Signed-off-by: WingMan Kwok <w-kwok2@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-23 14:37:36 -07:00
David S. Miller
16cfbae160 Merge branch 'bridge_external_fdb_aging'
Scott Feldman says:

====================
bridge: don't age out externally added FDB entries

v3: Per davem review: add del_timer_sync on rocker port remove.

v2: Per Jiri review comment: add BR_DEFAULT_AGEING_TIME to defines

Siva originally proposed skipping externally added FDB entries in the bridge's
FDB garbage collection func, and moving the ageing of externally added entries
to the port driver/device.  This broke rocker, since rocker didn't have a
hardware (or software) mechanism for ageing out its learned FDB entries.

This patchset reintroduces Siva's bridge driver patch to skip externally added
entries and adds support in rocker so rocker can age out its own entries.
Rocker does this using a software timer similar to the bridge's FDB garbage
collection timer.  Other switchdev devices/drivers can use this software timer
method or program the device to nofity aged-out entries to the driver.

Updated switchdev.txt documentation to reflect current state-of-the-art.  This
removes one more XXX todo comment in switchdev.txt.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-23 14:35:59 -07:00
Scott Feldman
45ffda75e1 switchdev: update documentation on FDB ageing_time
Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-23 14:35:58 -07:00
Siva Mannem
dcd45e0649 bridge: don't age externally added FDB entries
Signed-off-by: Siva Mannem <siva.mannem.lnx@gmail.com>
Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Acked-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Premkumar Jonnala <pjonnala@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-23 14:35:58 -07:00
Scott Feldman
52fe3e2d51 rocker: add FDB cleanup timer
Add a timer to each rocker switch to do FDB entry cleanup by ageing out
expired entries.  The timer scheduling algo is copied from the bridge
driver, for the most part, to keep the firing of the timer to a minimum.

Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-23 14:35:58 -07:00
Scott Feldman
e7335703e3 rocker: adding port ageing_time for ageing out FDB entries
Follow-up patcheset will allow user to change ageing_time, but for now
just hard-code it to a fixed value (the same value used as the default
for the bridge driver).

Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-23 14:35:58 -07:00
Scott Feldman
a79e88d9fb bridge: define some min/max/default ageing time constants
Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-23 14:35:58 -07:00