Commit graph

488532 commits

Author SHA1 Message Date
Jeff Kirsher
4bd145bed5 i40e/i40evf: Convert macro to static inline
Inline functions are preferred over macros when they can be used
interchangeably.

CC: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-12-09 12:57:05 -08:00
Shannon Nelson
e51d9b8f32 i40e: add to NVM update debug message
Add a little more state context to an NVM update debug message.

Change-ID: I512160259052bcdbe5bdf1adf403ab2bf7984970
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Acked-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-12-09 12:57:05 -08:00
Shannon Nelson
bf848f328c i40e: check for AQ timeout in aq_rc decode
Decoding the AQ return code is great except when the AQ send timed out
and there's no return code set.  This changes the handy decoder
interface to help catch and properly report the condition as a useful
errno rather than returning a misleading '0'.

Change-ID: I07a1f94f921606da49ffac7837bcdc37cd8222eb
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Acked-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-12-09 12:57:04 -08:00
Shannon Nelson
a3f0b381ee i40e: poll on NVM semaphore only if not other error
Only poll on the NVM semaphore if there's time left on a previous
reservation.  Also, add a little more info to debug messages.

Change-ID: I2439bf870b95a28b810dcb5cca1c06440463cf8a
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Acked-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-12-09 12:57:04 -08:00
Shannon Nelson
0fdd052c8c i40e: fix up NVM update sm error handling
The state transitions after an error were not managed well, so
these changes get us back to the INIT state or don't transition
out of the INIT state after most errors.

Change-ID: I90aa0e4e348dc4f58cbcdce9c5d4b7fd35981c6c
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Acked-by: Michal Kosiarz <michal.kosiarz@intel.com>
Tested-by: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-12-09 12:57:04 -08:00
Shannon Nelson
c509c1decb i40e: set max limit for access polling
Don't bother trying to set a smaller timeout on the polling,
just simplify the code and always use the max limit.  Also,
rename a variable for clarity and fix a comment.

Change-ID: I0300c3562ccc4fd5fa3088f8ae52db0c1eb33af5
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Acked-by: Michal Kosiarz <michal.kosiarz@intel.com>
Tested-by: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-12-09 12:57:03 -08:00
Shannon Nelson
2a6d8c2f01 i40e: remove unused nvm_semaphore_wait
The nvm_semaphore_wait field is set but never used, so let's
just get rid of it.

Change-ID: I2107bd29b69f99b1a61d7591d087429527c9d8fa
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Acked-by: Michal Kosiarz <michal.kosiarz@intel.com>
Tested-by: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-12-09 12:57:03 -08:00
Shannon Nelson
0f52958b2c i40e: init NVM update state on adminq init
The adminq init is run after the EMPR that is triggered by the
NVM update.  The final write command will cause the reset and
will want to wait for the ARQ event that signals the end of the
update, but the reset precludes the event being sent.  The state
is probably already at INIT, but we set it so here anyway, and
clear the release_on_done flag as well.

Change-ID: Ie9d724a39e71f988741abc3d51b4cb198c7e0272
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Acked-by: Michal Kosiarz <michal.kosiarz@intel.com>
Acked-by: Kamil Krawczyk <kamil.krawczyk@intel.com>
Tested-by: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-12-09 12:57:03 -08:00
Shannon Nelson
43477d2bbf i40e: add range check to i40e_aq_rc_to_posix
Just to be sure, add a range check to avoid any possible
array index-out-of-bound issues.

CC: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Change-ID: I9323bee6732c2a47599816e1d6c6b3a1f8dcbf54
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Acked-by: Michal Kosiarz <michal.kosiarz@intel.com>
Tested-by: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-12-09 12:57:02 -08:00
Shannon Nelson
74d0d0ede7 i40e: rework debug messages for NVM update
Rework the debug messages in the NVM update state machine so that we can
turn them on and off dynamically rather than forcing a recompile/reload.

These can now be turned on with something like:
	ethtool -s eth1 msglvl 0xf000008f
and off with:
	ethtool -s eth1 msglvl 0xf000000f

The high 0xf0000000 gets the driver's attention that we want to change the
internal debug flags, and the 0x80 bit is the NVM debug.

Change-ID: I5efb9039400304b29a0fd6ddea3f47bb362e6661
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Acked-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-12-09 12:57:02 -08:00
Shannon Nelson
bf06f7a9ba i40e: let firmware catch the NVM busy error
The NVM update operations take time finish asynchronously, and follow-on
update requests need to wait for the current one to finish.  Early
firmware didn't handle this well, so the code had to track the busy state.
The released firmware handles the busy state correctly, returning
I40E_AQ_RC_EBUSY if an update is still in progress, so the code no longer
needs to track this.

Change-ID: I6e6b4adc26d6dcc5fd7adfee5763423858a7d921
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Acked-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-12-09 12:57:02 -08:00
Shannon Nelson
c150a50271 i40e: better error messages for NVM update issues
Add more detail to the NVM update error messages so folks
have a better chance at diagnosing issues without having to
resort to heroic measures to reproduce an issue.

Change-ID: I270d1a9c903baceaef0bebcc55d29108ac08b0bd
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Tested-by: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-12-09 12:57:01 -08:00
Shannon Nelson
4443ec94d2 i40e: clear NVM update state on ethtool test
Once in a great while the NVMUpdate tools and the driver get out
of phase with each other.  This gives us a way to reset things
without having to unload the driver.

Change-ID: I353f688236249a666a90ba3e7233e0ed8c1a04e9
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Tested-by: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-12-09 12:57:00 -08:00
Linus Torvalds
a4a26e8e92 nios2 for v3.19-rc1
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.5 (GNU/Linux)
 
 iQIVAwUAVIVnNFWoEK+e3syCAQJHCBAArsdzkCTiFiKQwkvJSfFzOxrcdxBj7HT6
 N/aSZwLvemaaXkPmHmtFnkR2YoLwM+64CJTcTCuQvZaDxV9f0RVqwD5fi05qpvFK
 +tqgiUcj2Ygh9nLslN6dITk9J0F7EH8bnLrB9ZhC3yTVLwlKtR0UHB0kFglF1Qub
 3wK0CR342cDEfVaDcDs3Es6cIDfPsvWGONU6z9Lf6zyTxMUdVoyQ5RHAsOqJsHUI
 en4E7/uHRRWeqU6ZCBMP6K+24q4m5VmEgommotZQxAKYkpQHMGMfgVZ0dashQIt2
 JmEm1++YS9lrfJhnzNqJuhHp7tOHsGSPkEgTqvYWU/5D7lqQCkf4uam5rhCun2ht
 Ng9uOR1c34L+smiUvKPz4d0N59Jyv5zF0lsIynmluYNlArvkmjqbSJqtvN+Oc6SP
 VP/JbgjUkzsLrNrNay6/S2/hPXgC4lst+fkpRmLPzcflGrFtUHfIKV2hNl4j8oMa
 skHwjhzsREqWZXtXaGAb6MdpVISzNYqEs5A8gvfb1AWE/GpEFHqg7eipjmEEqtuu
 T+dfcI/tjEeUnWJzjvd86yEWZgstBh4ivoVDDcAuYPVG334L03U0EZ5/PzbCZUeU
 RO5xQT/gfwqLImIUi8iRFNI8ASeCYK+8WVQ/VFsPOidvF17sTfRRXCku7EaOJEJQ
 rA3Zo8qaPhE=
 =KmRf
 -----END PGP SIGNATURE-----

Merge tag 'nios2-v3.19-rc1' of git://git.rocketboards.org/linux-socfpga-next

Pull Altera Nios II processor support from Ley Foon Tan:
 "Here is the Linux port for Nios II processor (from Altera) arch/nios2/
  tree for v3.19.

  The patchset has been discussed on the kernel mailing lists since
  April and has gone through 6 revisions of review.  The additional
  changes since then have been mostly further cleanups and fixes when
  merged with other trees.

  The arch code is in arch/nios2 and one asm-generic change (acked by
  Arnd)"

Arnd Bergmann says:
 "I've reviewed the architecture port in the past and it looks good in
  its latest version"

Acked-by: Arnd Bergmann <arnd@arndb.de>

* tag 'nios2-v3.19-rc1' of git://git.rocketboards.org/linux-socfpga-next: (40 commits)
  nios2: Make NIOS2_CMDLINE_IGNORE_DTB depend on CMDLINE_BOOL
  nios2: Add missing NR_CPUS to Kconfig
  nios2: asm-offsets: Remove unused definition TI_TASK
  nios2: Remove write-only struct member from nios2_timer
  nios2: Remove unused extern declaration of shm_align_mask
  nios2: include linux/type.h in io.h
  nios2: move include asm-generic/io.h to end of file
  nios2: remove include asm-generic/iomap.h from io.h
  nios2: remove unnecessary space before define
  nios2: fix error handling of irq_of_parse_and_map
  nios2: Use IS_ENABLED instead of #ifdefs to check config symbols
  nios2: Build infrastructure
  Documentation: Add documentation for Nios2 architecture
  MAINTAINERS: Add nios2 maintainer
  nios2: ptrace support
  nios2: Module support
  nios2: Nios2 registers
  nios2: Miscellaneous header files
  nios2: Cpuinfo handling
  nios2: Time keeping
  ...
2014-12-09 12:45:41 -08:00
Jiri Pirko
bd42b78860 net: sched: cls_basic: fix error path in basic_change()
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Reviewed-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-09 15:41:56 -05:00
James Byrne
0f6538c271 net: macb: Remove obsolete comment from Kconfig
The Kconfig file says that Gigabit mode is not supported, but it has been
supported since commit 140b7552fd ("net/macb:
Add support for Gigabit Ethernet mode").

Signed-off-by: James Byrne <james.byrne@origamienergy.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-09 15:39:38 -05:00
Andreas Ruprecht
b2abeeddad net: ethernet: rocker: Add dependency to CONFIG_BRIDGE in Kconfig
In a configuration with CONFIG_BRIDGE set to 'm' and CONFIG_ROCKER
set to 'y', undefined references occur at link time:

> drivers/built-in.o: In function `rocker_port_fdb_learn_work':
> /home/jim/linux/drivers/net/ethernet/rocker/rocker.c:3014: undefined
> reference to `br_fdb_external_learn_del'
> /home/jim/linux/drivers/net/ethernet/rocker/rocker.c:3016: undefined
> reference to `br_fdb_external_learn_add'

This patch fixes these by declaring CONFIG_ROCKER as being dependent
on CONFIG_BRIDGE.

Reported-by: Jim Davis <jim.epost@gmail.com>
Signed-off-by: Andreas Ruprecht <rupran@einserver.de>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-09 15:26:43 -05:00
Gu Zheng
0cf00c6f36 net/socket.c : introduce helper function do_sock_sendmsg to replace reduplicate code
Introduce helper function do_sock_sendmsg() to simplify sock_sendmsg{_nosec},
and replace reduplicate code.

Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-09 15:24:26 -05:00
Eric Dumazet
42eef7a0bb tcp_cubic: refine Hystart delay threshold
In commit 2b4636a5f8 ("tcp_cubic: make the delay threshold of HyStart
less sensitive"), HYSTART_DELAY_MIN was changed to 4 ms.

The remaining problem is that using delay_min + (delay_min/16) as the
threshold is too sensitive.

6.25 % of variation is too small for rtt above 60 ms, which are not
uncommon.

Lets use 12.5 % instead (delay_min + (delay_min/8))

Tested:
 80 ms RTT between peers, FQ/pacing packet scheduler on sender.
 10 bulk transfers of 10 seconds :

nstat >/dev/null
for i in `seq 1 10`
 do
   netperf -H remote -- -k THROUGHPUT | grep THROUGHPUT
 done
nstat | grep Hystart

With the 6.25 % threshold :

THROUGHPUT=20.66
THROUGHPUT=249.38
THROUGHPUT=254.10
THROUGHPUT=14.94
THROUGHPUT=251.92
THROUGHPUT=237.73
THROUGHPUT=19.18
THROUGHPUT=252.89
THROUGHPUT=21.32
THROUGHPUT=15.58
TcpExtTCPHystartTrainDetect     2                  0.0
TcpExtTCPHystartTrainCwnd       4756               0.0
TcpExtTCPHystartDelayDetect     5                  0.0
TcpExtTCPHystartDelayCwnd       180                0.0

With the 12.5 % threshold
THROUGHPUT=251.09
THROUGHPUT=247.46
THROUGHPUT=250.92
THROUGHPUT=248.91
THROUGHPUT=250.88
THROUGHPUT=249.84
THROUGHPUT=250.51
THROUGHPUT=254.15
THROUGHPUT=250.62
THROUGHPUT=250.89
TcpExtTCPHystartTrainDetect     1                  0.0
TcpExtTCPHystartTrainCwnd       3175               0.0

Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Tested-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-09 14:58:23 -05:00
Eric Dumazet
6e3a8a937c tcp_cubic: add SNMP counters to track how effective is Hystart
When deploying FQ pacing, one thing we noticed is that CUBIC Hystart
triggers too soon.

Having SNMP counters to have an idea of how often the various Hystart
methods trigger is useful prior to any modifications.

This patch adds SNMP counters tracking, how many time "ack train" or
"Delay" based Hystart triggers, and cumulative sum of cwnd at the time
Hystart decided to end SS (Slow Start)

myhost:~# nstat -a | grep Hystart
TcpExtTCPHystartTrainDetect     9                  0.0
TcpExtTCPHystartTrainCwnd       20650              0.0
TcpExtTCPHystartDelayDetect     10                 0.0
TcpExtTCPHystartDelayCwnd       360                0.0

->
 Train detection was triggered 9 times, and average cwnd was
 20650/9=2294,
 Delay detection was triggered 10 times and average cwnd was 36

Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-09 14:58:23 -05:00
Joe Perches
5cccc702fd x86: bpf_jit_comp: Remove inline from static function definitions
Let the compiler decide instead.

No change in object size x86-64 -O2 no profiling

Signed-off-by: Joe Perches <joe@perches.com>
Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-09 14:56:41 -05:00
Joe Perches
d148134be5 x86: bpf_jit_comp: Reduce is_ereg() code size
Use the (1 << reg) & mask trick to reduce code size.

x86-64 size difference -O2 without profiling for various
gcc versions:

$ size arch/x86/net/bpf_jit_comp.o*
   text    data     bss     dec     hex filename
   9266       4       0    9270    2436 arch/x86/net/bpf_jit_comp.o.4.4.new
  10042       4       0   10046    273e arch/x86/net/bpf_jit_comp.o.4.4.old
   9109       4       0    9113    2399 arch/x86/net/bpf_jit_comp.o.4.6.new
   9717       4       0    9721    25f9 arch/x86/net/bpf_jit_comp.o.4.6.old
   8789       4       0    8793    2259 arch/x86/net/bpf_jit_comp.o.4.7.new
  10245       4       0   10249    2809 arch/x86/net/bpf_jit_comp.o.4.7.old
   9671       4       0    9675    25cb arch/x86/net/bpf_jit_comp.o.4.9.new
  10679       4       0   10683    29bb arch/x86/net/bpf_jit_comp.o.4.9.old

Signed-off-by: Joe Perches <joe@perches.com>
Tested-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-09 14:56:41 -05:00
Jiri Pirko
57d743a3de net: sched: cls: remove unused op put from tcf_proto_ops
It is never called and implementations are void. So just remove it.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-09 14:49:02 -05:00
Lendacky, Thomas
244d62be91 amd-xgbe: Prevent Tx cleanup stall
When performing Tx cleanup, the dirty index counter is compared to the
current index counter as one of the tests used to determine when to stop
cleanup. The "less than" test will fail when the current index counter
rolls over to zero causing cleanup to never occur again. Update the test
to a "not equal" to avoid this situation.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-09 14:47:46 -05:00
Cornelia Huck
f01a2a811a virtio_ccw: finalize_features error handling
We previously tried to use device even if finalize_features failed, but
that's wrong since driver and device are now out of sync.

Fail probe if we detect failures during finalize_features.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-12-09 21:42:06 +02:00
Michael S. Tsirkin
f13d8bc2a1 virtio_ccw: future-proof finalize_features
We never negotiate revision > 1, but just to
make this code more likely to work when we do,
require VERSION_1 with any revision >= 1.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-12-09 21:42:06 +02:00
Michael S. Tsirkin
5f4c976089 virtio_pci: rename virtio_pci -> virtio_pci_common
kbuild does not seem to like it when we name source
files same as the module.
Let's rename virtio_pci -> virtio_pci_common,
and get rid of #include-ing c files.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-12-09 21:42:05 +02:00
Michael S. Tsirkin
a90fdce9dc virtio_pci: update file descriptions and copyright
There's been a lot of changes since 2007.
List main authors, add Red Hat copyright.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-12-09 21:42:05 +02:00
Michael S. Tsirkin
38eb4a29a7 virtio_pci: split out legacy device support
Move everything dealing with legacy devices out to virtio_pci_legacy.c.
Expose common code APIs in virtio_pci.h

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-12-09 21:42:04 +02:00
Michael S. Tsirkin
6f8f23d63d virtio_pci: setup config vector indirectly
config vector setup is version specific, do it indirectly.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-12-09 21:42:04 +02:00
Michael S. Tsirkin
b09f00bbfe virtio_pci: setup vqs indirectly
VQ setup is mostly version-specific, add another level of indirection to
split the version-independent code out.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-12-09 21:42:03 +02:00
Michael S. Tsirkin
5386cef200 virtio_pci: delete vqs indirectly
VQ deletion is mostly version-specific, add another level of indirection
to split the version-independent code out.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-12-09 21:42:02 +02:00
Michael S. Tsirkin
f30eaf4a09 virtio_pci: use priv for vq notification
slightly reduce the amount of pointer chasing this needs to do.
More importantly, this will easily generalize to virtio 1.0.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-12-09 21:42:02 +02:00
Michael S. Tsirkin
3ec7a77bb3 virtio_pci: free up vq->priv
We don't need to go from vq to vq info on
data path, so using direct vq->priv pointer for that
seems like a waste.

Let's build an array of vq infos, then we can use vq->index
for that lookup.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-12-09 21:42:01 +02:00
Michael S. Tsirkin
f913dd4536 virtio_pci: fix coding style for structs
should be

struct foo {
}

not

struct foo
{
}

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-12-09 21:42:01 +02:00
Michael S. Tsirkin
af535722f8 virtio_pci: add isr field
Use isr field instead of direct access to ioaddr.
This way generalizes easily to virtio 1.0.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-12-09 21:42:00 +02:00
Michael S. Tsirkin
d71a6fc6b9 virtio: drop legacy_only driver flag
legacy_only flag is now unused, drop it from core.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-12-09 21:42:00 +02:00
Michael S. Tsirkin
63d9f218a3 virtio_balloon: drop legacy_only driver flag
we have blacklisted balloon in core, no need
for a driver flag.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-12-09 21:41:59 +02:00
Michael S. Tsirkin
4d23676fb6 virtio_ccw: rev 1 devices set VIRTIO_F_VERSION_1
What does it mean if rev 1 device does not set
VIRTIO_F_VERSION_1? E.g. is it native endian?

Let's not even try to drive such devices:
fail attempts to finalize features.
virtio core will detect this and bail out.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-12-09 21:41:58 +02:00
Yuval Mintz
02dc4025a0 bnx2x: Use correct fastpath version for VFs.
Our FW can support several fastpath HSI [for backward compatibility] but up
until now VFs were always configured to use latest fastpath HSI [although VF
driver might be older and use an older fastpath HSI].

For linux drivers, the differences are insignificant since driver never
utilized features that were overridden by the HSI change. But for VMs running
other operating systems this might be a problem.
In addition, eventually FW might change fastpath HSI in such a manner that
backward compatibility WILL break unless configured with proper version.

This patch fixes the issue for other operating system VMs, as well as lays
the ground work for forward compatibility in regard to the fastpath HSI.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-09 14:29:10 -05:00
Rasmus Villemoes
36c71a735a net: tulip: Remove private "strncmp"
The comment says that the built-in strncmp didn't work. That is not
surprising, as apparently "str" semantics are not really what is
wanted (hint: de4x5_strncmp only stops when two different bytes are
encountered or the end is reached; not if either byte happens to be
0). de4x5_strncmp is actually a memcmp (except for the signature and
that bytes are not necessarily treated as unsigned char); since only
the boolean value of the result is used we can just replace
de4x5_strncmp with memcmp.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-09 13:45:29 -05:00
Lokesh Vutla
c8a73a3568 drivers: net : cpsw: Update Kconfig for CPSW
CPSW is present in AM33xx, AM43xx, DRA7xx.
Updating the Kconfig to depend on ARCH_OMAP2PLUS instead of listing
all SoC's.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-09 13:44:16 -05:00
Erik Hugne
4988bb4a3f tipc: fix missing spinlock init and nullptr oops
commit 908344cdda ("tipc: fix bug in multicast congestion
handling") introduced two bugs with the bclink wakeup
function. This commit fixes the missing spinlock init for the
waiting_sks list. We also eliminate the race condition
between the waiting_sks length check/dequeue operations in
tipc_bclink_wakeup_users by simply removing the redundant
length check.

Signed-off-by: Erik Hugne <erik.hugne@ericsson.com>
Acked-by: Tero Aho <Tero.Aho@coriant.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-09 13:41:54 -05:00
hayeswang
d9a28c5b4c r8152: redefine REALTEK_USB_DEVICE
Redefine REALTEK_USB_DEVICE for the desired USB interface for probe().
There are three USB interfaces for the device. USB_CLASS_COMM and
USB_CLASS_CDC_DATA are for ECM mode (config #2). USB_CLASS_VENDOR_SPEC
is for the vendor mode (config #1). However, we are not interesting
in USB_CLASS_CDC_DATA for probe(), so redefine REALTEK_USB_DEVICE
to ignore the USB interface class of USB_CLASS_CDC_DATA.

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-09 13:41:24 -05:00
Eric Dumazet
6ffe75eb53 net: avoid two atomic operations in fast clones
Commit ce1a4ea3f1 ("net: avoid one atomic operation in skb_clone()")
took the wrong way to save one atomic operation.

It is actually possible to avoid two atomic operations, if we
do not change skb->fclone values, and only rely on clone_ref
content to signal if the clone is available or not.

skb_clone() can simply use the fast clone if clone_ref is 1.

kfree_skbmem() can avoid the atomic_dec_and_test() if clone_ref is 1.

Note that because we usually free the clone before the original skb,
this particular attempt is only done for the original skb to have better
branch prediction.

SKB_FCLONE_FREE is removed.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Chris Mason <clm@fb.com>
Cc: Sabrina Dubroca <sd@queasysnail.net>
Cc: Vijay Subramanian <subramanian.vijay@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-09 13:40:20 -05:00
Andrew Shewmaker
5d330cddb9 Update old iproute2 and Xen Remus links
Signed-off-by: Andrew Shewmaker <agshew@gmail.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-09 13:38:13 -05:00
Mahesh Bandewar
395eea6ccf rtnetlink: delay RTM_DELLINK notification until after ndo_uninit()
The commit 56bfa7ee7c ("unregister_netdevice : move RTM_DELLINK to
until after ndo_uninit") tried to do this ealier but while doing so
it created a problem. Unfortunately the delayed rtmsg_ifinfo() also
delayed call to fill_info(). So this translated into asking driver
to remove private state and then query it's private state. This
could have catastropic consequences.

This change breaks the rtmsg_ifinfo() into two parts - one takes the
precise snapshot of the device by called fill_info() before calling
the ndo_uninit() and the second part sends the notification using
collected snapshot.

It was brought to notice when last link is deleted from an ipvlan device
when it has free-ed the port and the subsequent .fill_info() call is
trying to get the info from the port.

kernel: [  255.139429] ------------[ cut here ]------------
kernel: [  255.139439] WARNING: CPU: 12 PID: 11173 at net/core/rtnetlink.c:2238 rtmsg_ifinfo+0x100/0x110()
kernel: [  255.139493] Modules linked in: ipvlan bonding w1_therm ds2482 wire cdc_acm ehci_pci ehci_hcd i2c_dev i2c_i801 i2c_core msr cpuid bnx2x ptp pps_core mdio libcrc32c
kernel: [  255.139513] CPU: 12 PID: 11173 Comm: ip Not tainted 3.18.0-smp-DEV #167
kernel: [  255.139514] Hardware name: Intel RML,PCH/Ibis_QC_18, BIOS 1.0.10 05/15/2012
kernel: [  255.139515]  0000000000000009 ffff880851b6b828 ffffffff815d87f4 00000000000000e0
kernel: [  255.139516]  0000000000000000 ffff880851b6b868 ffffffff8109c29c 0000000000000000
kernel: [  255.139518]  00000000ffffffa6 00000000000000d0 ffffffff81aaf580 0000000000000011
kernel: [  255.139520] Call Trace:
kernel: [  255.139527]  [<ffffffff815d87f4>] dump_stack+0x46/0x58
kernel: [  255.139531]  [<ffffffff8109c29c>] warn_slowpath_common+0x8c/0xc0
kernel: [  255.139540]  [<ffffffff8109c2ea>] warn_slowpath_null+0x1a/0x20
kernel: [  255.139544]  [<ffffffff8150d570>] rtmsg_ifinfo+0x100/0x110
kernel: [  255.139547]  [<ffffffff814f78b5>] rollback_registered_many+0x1d5/0x2d0
kernel: [  255.139549]  [<ffffffff814f79cf>] unregister_netdevice_many+0x1f/0xb0
kernel: [  255.139551]  [<ffffffff8150acab>] rtnl_dellink+0xbb/0x110
kernel: [  255.139553]  [<ffffffff8150da90>] rtnetlink_rcv_msg+0xa0/0x240
kernel: [  255.139557]  [<ffffffff81329283>] ? rhashtable_lookup_compare+0x43/0x80
kernel: [  255.139558]  [<ffffffff8150d9f0>] ? __rtnl_unlock+0x20/0x20
kernel: [  255.139562]  [<ffffffff8152cb11>] netlink_rcv_skb+0xb1/0xc0
kernel: [  255.139563]  [<ffffffff8150a495>] rtnetlink_rcv+0x25/0x40
kernel: [  255.139565]  [<ffffffff8152c398>] netlink_unicast+0x178/0x230
kernel: [  255.139567]  [<ffffffff8152c75f>] netlink_sendmsg+0x30f/0x420
kernel: [  255.139571]  [<ffffffff814e0b0c>] sock_sendmsg+0x9c/0xd0
kernel: [  255.139575]  [<ffffffff811d1d7f>] ? rw_copy_check_uvector+0x6f/0x130
kernel: [  255.139577]  [<ffffffff814e11c9>] ? copy_msghdr_from_user+0x139/0x1b0
kernel: [  255.139578]  [<ffffffff814e1774>] ___sys_sendmsg+0x304/0x310
kernel: [  255.139581]  [<ffffffff81198723>] ? handle_mm_fault+0xca3/0xde0
kernel: [  255.139585]  [<ffffffff811ebc4c>] ? destroy_inode+0x3c/0x70
kernel: [  255.139589]  [<ffffffff8108e6ec>] ? __do_page_fault+0x20c/0x500
kernel: [  255.139597]  [<ffffffff811e8336>] ? dput+0xb6/0x190
kernel: [  255.139606]  [<ffffffff811f05f6>] ? mntput+0x26/0x40
kernel: [  255.139611]  [<ffffffff811d2b94>] ? __fput+0x174/0x1e0
kernel: [  255.139613]  [<ffffffff814e2129>] __sys_sendmsg+0x49/0x90
kernel: [  255.139615]  [<ffffffff814e2182>] SyS_sendmsg+0x12/0x20
kernel: [  255.139617]  [<ffffffff815df092>] system_call_fastpath+0x12/0x17
kernel: [  255.139619] ---[ end trace 5e6703e87d984f6b ]---

Signed-off-by: Mahesh Bandewar <maheshb@google.com>
Reported-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Roopa Prabhu <roopa@cumulusnetworks.com>
Cc: David S. Miller <davem@davemloft.net>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-09 13:36:57 -05:00
David S. Miller
7287f7e57b Merge tag 'master-2014-12-01' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
John W. Linville says:

====================
pull request: wireless 2014-12-03

One last(?) batch of fixes hoping to make 3.18...

In this episode, we have another trio of rtlwifi fixes
repairing a little more damage from the major update of the
rtlwifi-family of drivers.  These editing mistakes caused some
memory corruption and missed a flag critical to proper interrupt
handling.  Together, these fix the kernel regression reported at
https://bugzilla.kernel.org/show_bug.cgi?id=88951 by Catalin Iacob.

Please let me know if there are problems!
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-09 13:35:25 -05:00
stephen hemminger
5f4d8d97f5 tc_act: export uapi header file
This file is used by iproute2 and should be exported.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-09 13:34:10 -05:00
David S. Miller
7ee813653e Merge branch 'cxgb4-next'
Hariprasad Shenai says:

====================
cxgb4/cxgb4vf: T5 BAR2 and ethtool related fixes

This series adds new interface to calculate BAR2 SGE queue register address for
cxgb4 and cxgb4vf driver and some more sge related fixes for T5. Also adds a
patch which updates the FW version displayed by ethtool after firmware flash.

The patches series is created against 'net-next' tree.
And includes patches on cxgb4 and cxgb4vf driver.

We have included all the maintainers of respective drivers. Kindly review the
change and let us know in case of any review comments.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-12-09 13:32:04 -05:00