Commit Graph

664843 Commits

Author SHA1 Message Date
Dave Airlie 88b0b92bda Merge tag 'drm-intel-fixes-2017-04-12' of git://anongit.freedesktop.org/git/drm-intel into drm-fixes
drm/i915 fixes for v4.11-rc7

one rcu related fix, and a few GVT fixes.

* tag 'drm-intel-fixes-2017-04-12' of git://anongit.freedesktop.org/git/drm-intel:
  drm/i915: Don't call synchronize_rcu_expedited under struct_mutex
  drm/i915: Suspend GuC prior to GPU Reset during GEM suspend
  drm/i915/gvt: set the correct default value of CTX STATUS PTR
  drm/i915/gvt: Fix firmware loading interface for GVT-g golden HW state
  drm/i915: Use a dummy timeline name for a signaled fence
  drm/i915: Ironlake do_idle_maps w/a may be called w/o struct_mutex
  drm/i915/gvt: remove the redundant info NULL check
  drm/i915/gvt: adjust mem size for low resolution type
  drm/i915: Avoid lock dropping between rescheduling
  drm/i915/gvt: exclude cfg space from failsafe mode
  drm/i915/gvt: Activate/de-activate vGPU in mdev ops.
  drm/i915/execlists: Wrap tail pointer after reset tweaking
  drm/i915/perf: remove user triggerable warn
  drm/i915/perf: destroy stream on sample_flags mismatch
  drm/i915: Align "unfenced" tiled access on gen2, early gen3
2017-04-13 09:13:04 +10:00
Dave Airlie 97d93f3549 Merge tag 'drm-misc-fixes-2017-04-11' of git://anongit.freedesktop.org/git/drm-misc into drm-fixes
drm-misc-fixes for 2017-04-11

Core changes:
 - None

Driver changes
 - udl: Fix unaligned memory access on SPARC (Jonathan)

* tag 'drm-misc-fixes-2017-04-11' of git://anongit.freedesktop.org/git/drm-misc:
  drm/udl: Fix unaligned memory access in udl_render_hline
2017-04-13 09:12:26 +10:00
Dave Airlie c7aae6221f Merge branch 'etnaviv/fixes' of https://git.pengutronix.de/git/lst/linux into drm-fixes
Single etnaviv error path fix.

* 'etnaviv/fixes' of https://git.pengutronix.de/git/lst/linux:
  drm/etnaviv: fix missing unlock on error in etnaviv_gpu_submit()
2017-04-13 09:11:24 +10:00
Kees Cook a4866aa812 mm: Tighten x86 /dev/mem with zeroing reads
Under CONFIG_STRICT_DEVMEM, reading System RAM through /dev/mem is
disallowed. However, on x86, the first 1MB was always allowed for BIOS
and similar things, regardless of it actually being System RAM. It was
possible for heap to end up getting allocated in low 1MB RAM, and then
read by things like x86info or dd, which would trip hardened usercopy:

usercopy: kernel memory exposure attempt detected from ffff880000090000 (dma-kmalloc-256) (4096 bytes)

This changes the x86 exception for the low 1MB by reading back zeros for
System RAM areas instead of blindly allowing them. More work is needed to
extend this to mmap, but currently mmap doesn't go through usercopy, so
hardened usercopy won't Oops the kernel.

Reported-by: Tommi Rantala <tommi.t.rantala@nokia.com>
Tested-by: Tommi Rantala <tommi.t.rantala@nokia.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
2017-04-12 11:40:23 -07:00
Alexey Dobriyan d92be7a41e net: make struct net_device::min_header_len 8-bit
This field is never big enough to warrant 16-bitness.

8-bit accesses enjoy shorted encoding on i386/x86_64 than 16-bit
accesses:

	add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-10 (-10)
	function                                     old     new   delta
	loopback_setup                               169     164      -5
	ether_setup                                  148     143      -5

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-12 13:59:21 -04:00
Alexey Dobriyan 5b3dc2f37d net: neigh: make ->hh_len 32-bit
Using 16-bit ->hh_len doesn't save any memory, save some .text instead:

	add/remove: 0/0 grow/shrink: 1/6 up/down: 2/-19 (-17)
	function                                     old     new   delta
	neigh_update                                2312    2314      +2
	fwnet_header_cache                           199     197      -2
	eth_header_cache                             101      99      -2
	ip6_finish_output2                          2371    2368      -3
	vrf_finish_output6                          1522    1518      -4
	vrf_finish_output                           1413    1409      -4
	ip_finish_output2                           1627    1623      -4

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-12 13:59:21 -04:00
Ilan Tayari eaffadbbb3 gso: Support frag_list splitting with head_frag
A driver may use build_skb() for received packets.
These SKBs then have a head_frag.

Since commit d7e8883cfc ("net: make GRO aware of
skb->head_frag"), GRO may build frag_list SKBs out of
head_frag received SKBs.
In such a case, the chained SKBs end up with a head_frag.

Commit 07b26c9454 ("gso: Support partial splitting at
the frag_list pointer") adds partial segmentation of frag_list
SKB chains into individual SKBs.
However, this is not done if the chained SKBs have any
linear part, because the device may not be able to DMA
the private linear buffer.

A chained frag_list SKB with head_frag is wrongfully
detected in this case as having a private linear part
and thus falls back to software GSO, while in fact the
linear part is backed by a DMA page just like any other frag.

This causes low performance when forwarding those packets
that were built with build_skb()

Allow partial segmentation at the frag_list pointer for
chained SKBs with head_frag.

Note that such SKBs can only be created by GRO, when applied
to received packets with head_frag.
Also note that this change only affects the data path that
performs the partial segmentation at frag_list pointer, and
not any of the other more common data paths.

Signed-off-by: Ilan Tayari <ilant@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-12 13:53:35 -04:00
Rabin Vincent a2d6cbb067 ipv6: Fix idev->addr_list corruption
addrconf_ifdown() removes elements from the idev->addr_list without
holding the idev->lock.

If this happens while the loop in __ipv6_dev_get_saddr() is handling the
same element, that function ends up in an infinite loop:

  NMI watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [test:1719]
  Call Trace:
   ipv6_get_saddr_eval+0x13c/0x3a0
   __ipv6_dev_get_saddr+0xe4/0x1f0
   ipv6_dev_get_saddr+0x1b4/0x204
   ip6_dst_lookup_tail+0xcc/0x27c
   ip6_dst_lookup_flow+0x38/0x80
   udpv6_sendmsg+0x708/0xba8
   sock_sendmsg+0x18/0x30
   SyS_sendto+0xb8/0xf8
   syscall_common+0x34/0x58

Fixes: 6a923934c3 (Revert "ipv6: Revert optional address flusing on ifdown.")
Signed-off-by: Rabin Vincent <rabinv@axis.com>
Acked-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-12 13:23:39 -04:00
Wei Yongjun 45abdf35cf drm/etnaviv: fix missing unlock on error in etnaviv_gpu_submit()
Add the missing unlock before return from function etnaviv_gpu_submit()
in the error handling case.

lst: fixed label name.

Fixes: f3cd1b064f ("drm/etnaviv: (re-)protect fence allocation with
GPU mutex")
CC: stable@vger.kernel.org #4.9+
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2017-04-12 17:22:05 +02:00
David S. Miller b94b8fce87 Merge branch 'l2tp-const'
Guillaume Nault says:

====================
l2tp: constify l2tp_session_get*() and l2tp_tunnel_find*()

Declare parameters of these functions as "const" where possible.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-12 10:44:03 -04:00
Guillaume Nault 2f858b928b l2tp: define parameters of l2tp_tunnel_find*() as "const"
l2tp_tunnel_find() and l2tp_tunnel_find_nth() don't modify "net".

Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-12 10:44:02 -04:00
Guillaume Nault 9aaef50c44 l2tp: define parameters of l2tp_session_get*() as "const"
Make l2tp_pernet()'s parameter constant, so that l2tp_session_get*() can
declare their "net" variable as "const".
Also constify "ifname" in l2tp_session_get_by_ifname().

Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-12 10:44:02 -04:00
Johannes Berg df7dd8fc96 net: xdp: don't export dev_change_xdp_fd()
Since dev_change_xdp_fd() is only used in rtnetlink, which must
be built-in, there's no reason to export dev_change_xdp_fd().

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-12 10:29:40 -04:00
David S. Miller 2a446c5190 Merge branch 'ftgmac100-rework-batch4-misc'
Benjamin Herrenschmidt says:

====================
ftgmac100: Rework batch 4 - Misc

This is v2 of the fourth batch of updates to the ftgmac100 driver.

This is a bunch of misc cleanups and fixes, such as properly
disabling HW checksum generation on AST2400 where it's known
to be broken and some chip init updates.

This also adds the ability to turn HW checksum on/off and
configure the ring sizes via ethtool.

v2 Fixes patch 1/10 (NETIF_F_HW_CSUM conversion)

The next (and last) batch will add a few more "features" such
as netpoll, multicast/promist, vlan offload...
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-12 10:17:03 -04:00
Benjamin Herrenschmidt bd3e4fde2f ftgmac100: Set default ring sizes to 128 entries
I haven't seen any improvement above that size on the machines
I've tested with.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-12 10:17:02 -04:00
Benjamin Herrenschmidt 52d9138fb3 ftgmac100: Make ring sizes configurable via ethtool
We set an arbitrary max at 1024 since we pre-allocate the actual
descriptor arrays and skb arrays to the full size to keep the
code a bit simpler and avoid allocation failures in the reset
task.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-12 10:17:02 -04:00
Benjamin Herrenschmidt 3833dc6c18 ftgmac100: Add more register inits in ftgmac100_init_hw()
Clear stale interrupts on entry, configure FIFO sizes, set FIFO
thresholds, configure interrupt mitigation.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-12 10:17:02 -04:00
Benjamin Herrenschmidt 8eecf7caad ftgmac100: Open code remaining register writes
The helpers just take space but don't provide much value. Simple
one line comments are more explanatory.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-12 10:17:02 -04:00
Benjamin Herrenschmidt ba1b1234d6 ftgmac100: Rename ftgmac100_setup_mac to ftgmac100_initial_mac
To remove more confusion. This function is about obtaining the
initial MAC address at driver probe time.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-12 10:17:01 -04:00
Benjamin Herrenschmidt f39c71b069 ftgmac100: Rename ftgmac100_set_mac to ftgmac100_write_mac_addr
To avoid confusion with the ndo callback and generally be
clearer about the purpose of that function

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-12 10:17:01 -04:00
Benjamin Herrenschmidt 8c3ed1315e ftgmac100: Set netdev->hw_features
So features can be turned on/off via ethtool

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-12 10:17:01 -04:00
Benjamin Herrenschmidt 6aff0bf641 ftgmac100: Disable HW checksum generation on AST2400, enable on others
We found out that HW checksum generation only works from AST2500
onward. This disables it on AST2400 and removes the "no-hw-checksum"
properties in the device-trees. The problem we had wasn't related
to NC-SI.

Also rework the logic testing for that property so it can be used
to disable HW checksum generation and checking regardless of whether
NC-SI is used or not in case other variants out there need this.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-12 10:17:01 -04:00
Benjamin Herrenschmidt 78d28543a6 ftgmac100: Use device "compatible" property, not machine.
We test for aspeed chips to handle a couple of special cases,
but we do that by checking the machine type which isn't right.

Instead check the actual device compatible property. This also
updates the dtsi files for the aspeed SoC to match.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-12 10:17:01 -04:00
Benjamin Herrenschmidt 05690d633f ftgmac100: Upgrade to NETIF_F_HW_CSUM
The documentation describes NETIF_F_IP_CSUM as deprecated
so let's switch to NETIF_F_HW_CSUM and use the helper to
handle unhandled protocols.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-12 10:17:00 -04:00
Linus Torvalds b9b3322f13 Merge branch 'stable-4.11' of git://git.infradead.org/users/pcmoore/audit
Pull audit fix from Paul Moore:
 "One more small audit fix, this should be the last for v4.11.

  Seth Forshee noticed a problem where the audit retry queue wasn't
  being flushed properly when audit was enabled and the audit daemon
  wasn't running; this patches fixes the problem (see the commit
  description for more details on the change).

  Both Seth and I have tested this and everything looks good"

* 'stable-4.11' of git://git.infradead.org/users/pcmoore/audit:
  audit: make sure we don't let the retry queue grow without bounds
2017-04-12 00:02:33 -07:00
Linus Torvalds 025def92dd Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Pull SCSI target fixes from Nicholas Bellinger:

 "There has been work in a number of different areas over the last
  weeks, including:

   - Fix target-core-user (TCMU) back-end bi-directional handling (Xiubo
     Li + Mike Christie + Ilias Tsitsimpis)

   - Fix iscsi-target TMR reference leak during session shutdown (Rob
     Millner + Chu Yuan Lin)

   - Fix target_core_fabric_configfs.c race between LUN shutdown +
     mapped LUN creation (James Shen)

   - Fix target-core unknown fabric callback queue-full errors (Potnuri
     Bharat Teja)

   - Fix iscsi-target + iser-target queue-full handling in order to
     support iw_cxgb4 RNICs. (Potnuri Bharat Teja + Sagi Grimberg)

   - Fix ALUA transition state race between multiple initiator (Mike
     Christie)

   - Drop work-around for legacy GlobalSAN initiator, to allow QLogic
     57840S + 579xx offload HBAs to work out-of-the-box in MSFT
     environments. (Martin Svec + Arun Easi)

  Note that a number are CC'ed for stable, and although the queue-full
  bug-fixes required for iser-target to work with iw_cxgb4 aren't CC'ed
  here, they'll be posted to Greg-KH separately"

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  tcmu: Skip Data-Out blocks before gathering Data-In buffer for BIDI case
  iscsi-target: Drop work-around for legacy GlobalSAN initiator
  target: Fix ALUA transition state race between multiple initiators
  iser-target: avoid posting a recv buffer twice
  iser-target: Fix queue-full response handling
  iscsi-target: Propigate queue_data_in + queue_status errors
  target: Fix unknown fabric callback queue-full errors
  tcmu: Fix wrongly calculating of the base_command_size
  tcmu: Fix possible overwrite of t_data_sg's last iov[]
  target: Avoid mappedlun symlink creation during lun shutdown
  iscsi-target: Fix TMR reference leak during session shutdown
  usb: gadget: Correct usb EP argument for BOT status request
  tcmu: Allow cmd_time_out to be set to zero (disabled)
2017-04-11 23:51:58 -07:00
Linus Torvalds 06ea4c38bc Merge branch 'for-4.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup fixes from Tejun Heo:
 "This contains fixes for two long standing subtle bugs:

   - kthread_bind() on a new kthread binds it to specific CPUs and
     prevents userland from messing with the affinity or cgroup
     membership. Unfortunately, for cgroup membership, there's a window
     between kthread creation and kthread_bind*() invocation where the
     kthread can be moved into a non-root cgroup by userland.

     Depending on what controllers are in effect, this can assign the
     kthread unexpected attributes. For example, in the reported case,
     workqueue workers ended up in a non-root cpuset cgroups and had
     their CPU affinities overridden. This broke workqueue invariants
     and led to workqueue stalls.

     Fixed by closing the window between kthread creation and
     kthread_bind() as suggested by Oleg.

   - There was a bug in cgroup mount path which could allow two
     competing mount attempts to attach the same cgroup_root to two
     different superblocks.

     This was caused by mishandling return value from kernfs_pin_sb().

     Fixed"

* 'for-4.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroup: avoid attaching a cgroup root to two different superblocks
  cgroup, kthread: close race window where new kthreads can be migrated to non-root cgroups
2017-04-11 23:38:16 -07:00
Linus Torvalds af94bdfa79 Merge branch 'for-4.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
Pull libata fixes from Tejun Heo:
 "Two libata fixes.

  One to disable hotplug on VT6420 which never worked properly. The
  other reverts an earlier patch which disabled the second port on
  SB600/700. There were some confusions due to earlier datasheets which
  incorrectly indicated that the second port is not implemented on both
  SB600 and 700"

* 'for-4.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
  sata_via: Enable hotplug only on VT6421
  Revert "pata_atiixp: Don't use unconnected secondary port on SB600/SB700"
2017-04-11 23:36:46 -07:00
Linus Torvalds fe251c4b9a Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Pull HID fixes from Jiri Kosina:

 - revert of a commit that switched all Synaptics touchpads over to be
   driven by hid-rmi. It turns out that this caused several user-visible
   regressions, and therefore we revert back to the original state
   before all the reported issues have been fixed.

 - a new uclogic device ID addition, from Xiaolei Yu.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
  Revert "HID: rmi: Handle all Synaptics touchpads using hid-rmi"
  HID: uclogic: add support for Ugee Tablet EX07S
2017-04-11 23:35:14 -07:00
David S. Miller f221dcd91d Merge branch 'net-smc-next'
Ursula Braun says:

====================
net/smc: patches for net-next

here are some patches for net/smc. Most important are
improvements for socket closing.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-11 23:01:15 -04:00
Ursula Braun 2c9c16825e net/smc: do not use IB_SEND_INLINE together with mapped data
smc specifies IB_SEND_INLINE for IB_WR_SEND ib_post_send calls, but
provides a mapped buffer to be sent. This is inconsistent, since
IB_SEND_INLINE works without mapped buffer. Problem has not been
detected in the past, because tests had been limited to Connect X3 cards
from Mellanox, whose mlx4 driver just ignored the IB_SEND_INLINE flag.
For now, the IB_SEND_INLINE flag is removed.

Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-11 23:01:14 -04:00
Ursula Braun 288c83902a net/smc: destruct non-accepted sockets
Make sure sockets never accepted are removed cleanly.

Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-11 23:01:14 -04:00
Ursula Braun f5227cd9f1 net/smc: remove duplicate unhash
unhash is already called in sock_put_work. Remove the second call.

Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-11 23:01:14 -04:00
Ursula Braun a98bf8c0bc net/smc: guarantee ConnClosed send after shutdown SHUT_WR
State SMC_CLOSED should be reached only, if ConnClosed has been sent to
the peer. If ConnClosed is received from the peer, a socket with
shutdown SHUT_WR done, switches errorneously to state SMC_CLOSED, which
means the peer socket is dangling. The local SMC socket is supposed to
switch to state APPFINCLOSEWAIT to make sure smc_close_final() is called
during socket close.

Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-11 23:01:14 -04:00
Ursula Braun 46c28dbd4c net/smc: no socket state changes in tasklet context
Several state changes occur during SMC socket closing. Currently
state changes triggered locally occur in process context with
lock_sock() taken while state changes triggered by peer occur in
tasklet context with bh_lock_sock() taken. bh_lock_sock() does not
wait till a lock_sock(() task in process context is finished. This
may lead to races in socket state transitions resulting in dangling
SMC-sockets, or it may lead to duplicate SMC socket freeing.
This patch introduces a closing worker to run all state changes under
lock_sock().

Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Reported-by: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-11 23:01:14 -04:00
Ursula Braun 90e9517ed9 net/smc: always call the POLL_IN part of sk_wake_async
Wake up reading file descriptors for a closing socket as well, otherwise
some socket applications may stall.

Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-11 23:01:14 -04:00
Ursula Braun 90cacb2ea6 net/smc: guarantee reset of write_blocked for heavy workload
If peer indicates write_blocked, the cursor state of the received data
should be send to the peer immediately (in smc_tx_consumer_update()).
Afterwards the write_blocked indicator is cleared.

If there is no free slot for another write request, sending is postponed
to worker smc_tx_work, and the write_blocked indicator is not cleared.
Therefore another clearing check is needed in smc_tx_work().

Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-11 23:01:14 -04:00
Ursula Braun 5da7e4d355 net/smc: return active RoCE port only
SMC requires an active ib port on the RoCE device.
smc_pnet_find_roce_resource() determines the matching RoCE device port
according to the configured PNET table. Do not return the found
RoCE device port, if it is not flagged active.

Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-11 23:01:14 -04:00
Ursula Braun 249633a443 net/smc: remove useless smc_ib_devices_list check
The global event handler is created only, if the ib_device has already
been used by at least one link group. It is guaranteed that there exists
the corresponding entry in the smc_ib_devices list. Get rid of this
superfluous check.

Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-11 23:01:14 -04:00
Ursula Braun 3c22e8f320 net/smc: get rid of old comment
This patch removes an outdated comment.

Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-11 23:01:14 -04:00
David S. Miller fc9c89b19c Merge branch 'bridge-register-netdev-before-changelink'
Ido Schimmel says:

====================
bridge: Fix kernel oops during bridge creation

First patch adds a missing ndo_uninit() in the bridge driver, which is a
prerequisite for the second patch that actually fixes the oops.

Please consider both patches for 4.4.y, 4.9.y and 4.10.y
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-11 22:22:45 -04:00
Ido Schimmel 5b8d5429da bridge: netlink: register netdevice before executing changelink
Peter reported a kernel oops when executing the following command:

$ ip link add name test type bridge vlan_default_pvid 1

[13634.939408] BUG: unable to handle kernel NULL pointer dereference at
0000000000000190
[13634.939436] IP: __vlan_add+0x73/0x5f0
[...]
[13634.939783] Call Trace:
[13634.939791]  ? pcpu_next_unpop+0x3b/0x50
[13634.939801]  ? pcpu_alloc+0x3d2/0x680
[13634.939810]  ? br_vlan_add+0x135/0x1b0
[13634.939820]  ? __br_vlan_set_default_pvid.part.28+0x204/0x2b0
[13634.939834]  ? br_changelink+0x120/0x4e0
[13634.939844]  ? br_dev_newlink+0x50/0x70
[13634.939854]  ? rtnl_newlink+0x5f5/0x8a0
[13634.939864]  ? rtnl_newlink+0x176/0x8a0
[13634.939874]  ? mem_cgroup_commit_charge+0x7c/0x4e0
[13634.939886]  ? rtnetlink_rcv_msg+0xe1/0x220
[13634.939896]  ? lookup_fast+0x52/0x370
[13634.939905]  ? rtnl_newlink+0x8a0/0x8a0
[13634.939915]  ? netlink_rcv_skb+0xa1/0xc0
[13634.939925]  ? rtnetlink_rcv+0x24/0x30
[13634.939934]  ? netlink_unicast+0x177/0x220
[13634.939944]  ? netlink_sendmsg+0x2fe/0x3b0
[13634.939954]  ? _copy_from_user+0x39/0x40
[13634.939964]  ? sock_sendmsg+0x30/0x40
[13634.940159]  ? ___sys_sendmsg+0x29d/0x2b0
[13634.940326]  ? __alloc_pages_nodemask+0xdf/0x230
[13634.940478]  ? mem_cgroup_commit_charge+0x7c/0x4e0
[13634.940592]  ? mem_cgroup_try_charge+0x76/0x1a0
[13634.940701]  ? __handle_mm_fault+0xdb9/0x10b0
[13634.940809]  ? __sys_sendmsg+0x51/0x90
[13634.940917]  ? entry_SYSCALL_64_fastpath+0x1e/0xad

The problem is that the bridge's VLAN group is created after setting the
default PVID, when registering the netdevice and executing its
ndo_init().

Fix this by changing the order of both operations, so that
br_changelink() is only processed after the netdevice is registered,
when the VLAN group is already initialized.

Fixes: b6677449df ("bridge: netlink: call br_changelink() during br_dev_newlink()")
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reported-by: Peter V. Saveliev <peter@svinota.eu>
Tested-by: Peter V. Saveliev <peter@svinota.eu>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-11 22:22:44 -04:00
Ido Schimmel b6fe0440c6 bridge: implement missing ndo_uninit()
While the bridge driver implements an ndo_init(), it was missing a
symmetric ndo_uninit(), causing the different de-initialization
operations to be scattered around its dellink() and destructor().

Implement a symmetric ndo_uninit() and remove the overlapping operations
from its dellink() and destructor().

This is a prerequisite for the next patch, as it allows us to have a
proper cleanup upon changelink() failure during the bridge's newlink().

Fixes: b6677449df ("bridge: netlink: call br_changelink() during br_dev_newlink()")
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-11 22:22:44 -04:00
Joao Pinto c02b7a9145 net: stmmac: use netif_set_real_num_{rx,tx}_queues
In the submission of the lastest multiple buffer patch set, this fix was lost.
I am sending this patch to put it right again. The fix was originally proposed
by Arnd Bergmann.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Joao Pinto <jpinto@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-11 22:20:52 -04:00
Ingo Molnar 0718b33406 perf/urgent annotate fix for s390:
- The move to support cross arch annotation introduced per arch
   initialization requirements, fullfill them for s/390 (Christian Borntraeger)
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-urgent-for-mingo-4.11-20170411' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull 'perf annotate' fix for s390:

- The move to support cross arch annotation introduced per arch
  initialization requirements, fullfill them for s/390 (Christian Borntraeger)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-04-11 21:41:39 +02:00
Willem de Bruijn 8f917bba00 bpf: pass sk to helper functions
BPF helper functions access socket fields through skb->sk. This is not
set in ingress cgroup and socket filters. The association is only made
in skb_set_owner_r once the filter has accepted the packet. Sk is
available as socket lookup has taken place.

Temporarily set skb->sk to sk in these cases.

Signed-off-by: Willem de Bruijn <willemb@google.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-11 14:54:19 -04:00
Wei Yongjun cb6bf9cfdb devlink: fix return value check in devlink_dpipe_header_put()
Fix the return value check which testing the wrong variable
in devlink_dpipe_header_put().

Fixes: 1555d204e7 ("devlink: Support for pipeline debug (dpipe)")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-11 14:53:32 -04:00
David S. Miller b46b99d785 Merge branch 's390-qeth-updates'
Julian Wiedmann says:

====================
more s390/net updates

here's a second batch of s390/net patches for net-next.
A mixed bunch of qeth cleanups, and a few patches to add support for
ETHTOOL_GLINKSETTINGS.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-11 14:51:36 -04:00
Julian Wiedmann 6ffa4d1bbe s390/qeth: remove unimplemented gdev routines
prepare() and complete() are not implemented by any discipline, so just
drop all the indirection.

Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Reviewed-by: Hans Wippel <hwippel@linux.vnet.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-11 14:51:35 -04:00
Julian Wiedmann 41fc3b6567 s390/qeth: use LINK_MODE_* to report the link characteristics
LINK_MODE_* replaces the u32-limited SUPPORTED_* / ENABLED_*
definitions.

Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Reviewed-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-11 14:51:35 -04:00