David Howells [Tue, 30 Aug 2016 08:49:28 +0000 (09:49 +0100)]
rxrpc: Fix a potential NULL-pointer deref in rxrpc_abort_calls
The call pointer in a channel on a connection will be NULL if there's no
active call on that channel. rxrpc_abort_calls() needs to check for this
before trying to take the call's state_lock.
Signed-off-by: David Howells <dhowells@redhat.com>
David S. Miller [Tue, 30 Aug 2016 05:52:09 +0000 (01:52 -0400)]
Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue
Jeff Kirsher says:
====================
100GbE Intel Wired LAN Driver Updates 2016-08-29
This series contains updates to fm10k only.
Jake provides all the changes in this series starting with fixes an issue
where VF devices may fail during an unbind/bind and we will never zero
the reference counter for the pci_dev structure. Updated the hot path
to use SW counters instead of checking for hardware Tx pending for
possible transmit hangs, which will improve performance. Fixed the NAPI
budget accounting so that fm10k_poll will return actual work done,
capped at (budget - 1) instead of returning 0. Added a check to ensure
that the device is in the normal IO state before continuing to probe,
which allows us to give a more descriptive message of what is wrong
in the case of uncorrectable AER error. In preparation for adding Geneve
Rx offload support, refactored the current VXLAN offload flow to be a bit
more generic. Added support for receive offloads on one Geneve tunnel.
Ensure that other bits in the RXQCTL register do not get cleared, to
make sure that bits related to queue ownership are maintained. Fixed
an issue in queue ownership assignment which casued a race condition
between the PF and the VF such that potentially a VF could cause FUM
fault errors due to normal PF/VF driver behavior.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Tue, 30 Aug 2016 02:12:35 +0000 (19:12 -0700)]
Merge tag 'hwmon-for-linus-v4.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon fix from Guenter Roeck:
"Add missing sysfs attribute group terminator to it87 driver"
* tag 'hwmon-for-linus-v4.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (it87) Add missing sysfs attribute group terminator
Linus Torvalds [Mon, 29 Aug 2016 19:37:11 +0000 (12:37 -0700)]
Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"Fix bugs that could cause kernel deadlocks or file system corruption
while moving xattrs to expand the extended inode.
Also add some sanity checks to the block group descriptors to make
sure we don't end up overwriting the superblock"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: avoid deadlock when expanding inode size
ext4: properly align shifted xattrs when expanding inodes
ext4: fix xattr shifting when expanding inodes part 2
ext4: fix xattr shifting when expanding inodes
ext4: validate that metadata blocks do not overlap superblock
ext4: reserve xattr index for the Hurd
1) Segregate namespaces properly in conntrack dumps, from Liping Zhang.
2) tcp listener refcount fix in netfilter tproxy, from Eric Dumazet.
3) Fix timeouts in qed driver due to xmit_more, from Yuval Mintz.
4) Fix use-after-free in tcp_xmit_retransmit_queue().
5) Userspace header fixups (use of __u32, missing includes, etc.) from
Mikko Rapeli.
6) Further refinements to fragmentation wrt gso and tunnels, from
Shmulik Ladkani.
7) Trigger poll correctly for zero length UDP packets, from Eric
Dumazet.
8) TCP window scaling fix, also from Eric Dumazet.
9) SLAB_DESTROY_BY_RCU is not relevant any more for UDP sockets.
10) Module refcount leak in qdisc_create_dflt(), from Eric Dumazet.
11) Fix deadlock in cp_rx_poll() of 8139cp driver, from Gao Feng.
12) Memory leak in rhashtable's alloc_bucket_locks(), from Eric Dumazet.
13) Add new device ID to alx driver, from Owen Lin.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (83 commits)
Add Killer E2500 device ID in alx driver.
net: smc91x: fix SMC accesses
Documentation: networking: dsa: Remove platform device TODO
net/mlx5: Increase number of ethtool steering priorities
net/mlx5: Add error prints when validate ETS failed
net/mlx5e: Fix memory leak if refreshing TIRs fails
net/mlx5e: Add ethtool counter for TX xmit_more
net/mlx5e: Fix ethtool -g/G rx ring parameter report with striding RQ
net/mlx5e: Don't wait for SQ completions on close
net/mlx5e: Don't post fragmented MPWQE when RQ is disabled
net/mlx5e: Don't wait for RQ completions on close
net/mlx5e: Limit UMR length to the device's limitation
rhashtable: fix a memory leak in alloc_bucket_locks()
sfc: fix potential stack corruption from running past stat bitmask
team: loadbalance: push lacpdus to exact delivery
net: hns: dereference ppe_cb->ppe_common_cb if it is non-null
8139cp: Fix one possible deadloop in cp_rx_poll
i40e: Change some init flow for the client
Revert "phy: IRQ cannot be shared"
net: dsa: bcm_sf2: Fix race condition while unmasking interrupts
...
Linus Torvalds [Mon, 29 Aug 2016 19:20:22 +0000 (12:20 -0700)]
Merge tag 'platform-drivers-x86-v4.8-4' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86
Pull x86 platform driver fixes from Darren Hart:
"Remove module related code from two drivers that are only configurable
as built-in: intel_pmic_gpio and platform/olpc"
* tag 'platform-drivers-x86-v4.8-4' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86:
intel_pmic_gpio: Make explicitly non-modular
platform/olpc: Make ec explicitly non-modular
Linus Torvalds [Mon, 29 Aug 2016 19:12:15 +0000 (12:12 -0700)]
Merge tag 'powerpc-4.8-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Ben Herrenschmidt:
"This was meant to be sent early last week, but I has a change pending
on one of the fixes and other things made me forget all about. Ugh.
We have some misc fixes for powerpc 4.8. Some trivial bits and some
regressions, and a trivial cleanup or two that I saw no point in
letting rot in patchwork"
* tag 'powerpc-4.8-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc: signals: Discard transaction state from signal frames
powerpc/powernv : Drop reference added by kset_find_obj()
powerpc/tm: do not use r13 for tabort_syscall
powerpc: move hmi.c to arch/powerpc/kvm/
powerpc: sysdev: cpm: fix gpio save_regs functions
powerpc/pseries: PACA save area fix for MCE vs MCE
powerpc/pseries: PACA save area fix for general exception vs MCE
powerpc/prom: Fix sub-processor option passed to ibm, client-architecture-support
powerpc, hotplug: Avoid to touch non-existent cpumasks.
powerpc: migrate exception table users off module.h and onto extable.h
powerpc/powernv/pci: fix iterator signedness
powerpc/pseries: use pci_host_bridge.release_fn() to kfree(phb)
cxl: use pcibios_free_controller_deferred() when removing vPHBs
powerpc: mpc8349emitx: Delete unnecessary assignment for the field "owner"
powerpc/512x: Delete unnecessary assignment for the field "owner"
drivers/macintosh: Delete owner assignment
powerpc: cputhreads: Add missing include file
Jacob Keller [Tue, 9 Aug 2016 00:08:19 +0000 (17:08 -0700)]
fm10k: don't re-map queues when a mailbox message suffices
When the PF assigns a new MAC address to a VF it uses the base address
registers to store the MAC address. This allows a VF which loads after
this setup the ability to get the initial address without having to wait
for a mailbox message. Unfortunately to do this, the PF must take queue
ownership away from the VF, which can cause fault errors when there is
already an active VF driver.
This queue ownership assignment causes race condition between the PF and
the VF such that potentially a VF can cause FUM fault errors due to
normal PF/VF driver behavior.
It is not safe to simply allow the PF to write the base address
registers without taking queue ownership back as the PF must also
disable the queues, and this would impact active VF use. The current
code is safe because the queue ownership will prevent the VF from
actually writing but does trigger the FUM fault.
We can do better by simply avoiding the register write process when
a mailbox message suffices. If the message can be sent over the mailbox,
then we will not perform the queue ownership assignment and we won't
update the base address to be the same as the MAC address.
We do still have to write the TXQCTL registers in order to update the
VID of the queue. This is necessary because the TXQCTL register is
read-only from the VF, and thus the VF cannot do this for itself. This
register does not need to wait for the Tx queue to be disabled and is
safe for the PF to write during normal VF operation, so we move this
write to the top of the function above the mailbox message. Without
this, the TXQCTL register would be misconfigured and cause the VF to Tx
hang.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Jacob Keller [Fri, 26 Aug 2016 07:14:34 +0000 (00:14 -0700)]
fm10k: rework vxlan_port offload before adding geneve support
In preparation for adding Geneve Rx offload support, refactor the
current VXLAN offload flow to be a bit more generic so that it will be
easier to add the new Geneve code. The fm10k hardware supports one VXLAN
and one Geneve tunnel, so we will eventually treat the VXLAN and Geneve
tunnels identically. To this end, factor out the code that handles the
current list so that we can use the generic flow for both tunnels in the
next patch.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Jacob Keller [Thu, 23 Jun 2016 20:54:01 +0000 (13:54 -0700)]
fm10k: don't try to stop queues if we've lost hw_addr
In the event of a surprise remove, we expect the driver to go down,
which includes calling .stop_hw(). However, this function will return an
error because the queues won't appear to cleanly disable. Prevent this
and avoid the unnecessary checks by just returning when
FM10K_REMOVED(hw->hw_addr) is true.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Jacob Keller [Thu, 23 Jun 2016 20:31:01 +0000 (13:31 -0700)]
fm10k: don't continue probe if PCI device not in normal IO state
In the event of an uncorrectable AER error occurring when the driver has
not loaded, the recovery routines are not done. This is done because
future loads of the driver may not be aware of the IO state and may not
be able to recover at all. In this case, when we next load the driver it
fails due to what appears to be a surprise remove event. Instead, add
a check to ensure that the device is in the normal IO state before
continuing to probe. This allows us to give a more descriptive message
of what is wrong.
Without this change, the driver will attempt to probe up to our first
call of .reset_hw() which will be unable to read registers and act as if
a surprise remove event occurred.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Jacob Keller [Mon, 20 Jun 2016 17:39:32 +0000 (10:39 -0700)]
fm10k: NAPI polling routine must return actual work done
When fm10k_poll fully cleans rings it returns 0. This is incorrect as it
messes up the budget accounting in the core NAPI code. Fix this by
returning actual work done, capped at budget - 1 since the core doesn't
expect a return of the full budget when the driver modifies the NAPI
status.
Cc: Paolo Abeni <pabeni@redhat.com> Cc: Venkatesh Srinivas <venkateshs@google.com> Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Jacob Keller [Fri, 17 Jun 2016 23:21:11 +0000 (16:21 -0700)]
fm10k: prefer READ_ONCE instead of ACCESS_ONCE
While technically not needed, as all our uses of ACCESS_ONCE are scalar
types, we already use READ_ONCE in a few places, and for code
readability we can swap all the uses of the older ACCESS_ONCE into
READ_ONCE.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Jacob Keller [Thu, 9 Jun 2016 21:56:05 +0000 (14:56 -0700)]
fm10k: use software values when checking for Tx hangs in hot path
A previous patch added support to check for hardware Tx pending in the
fm10k_down routine. This support was intended to ensure that we
accurately check what the hardware state is. However, checking for Tx
hangs in this manor during the hotpath results in a large performance
hit. Avoid this by making the hotpath check use the SW counters instead.
Fixes: a0f53cf49cb0 ("fm10k: use actual hardware registers when checking for pending Tx", 2016-06-08) Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Jacob Keller [Thu, 9 Jun 2016 19:02:03 +0000 (12:02 -0700)]
fm10k: fix PCI device enable_cnt leak in .io_slot_reset
A previous patch removed the pci_disable_device() call in
.io_error_detected. This call corresponded to a pci_enable_device_mem()
call within .io_slot_reset handler. Change the call here to
a pci_reenable_device() so that it does not increment and leak the
enable_cnt reference count for the device. Without this change, VF
devices may fail during an unbind/bind, and we'll never zero the
reference counter for the pci_dev structure.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
...meaning that it currently is not being built as a module by anyone.
Lets remove the couple traces of modular infrastructure use, so that
when reading the driver there is no doubt it is builtin-only.
We delete the MODULE_LICENSE tag etc. since all that information
was (or is now) contained at the top of the file in the comments.
We don't replace module.h with init.h since the file already has that.
Cc: Alek Du <alek.du@intel.com> Cc: platform-driver-x86@vger.kernel.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Paul Gortmaker [Mon, 15 Aug 2016 22:25:17 +0000 (18:25 -0400)]
platform/olpc: Make ec explicitly non-modular
The Kconfig entry controlling compilation of this code is:
arch/x86/Kconfig:config OLPC
arch/x86/Kconfig: bool "One Laptop Per Child support"
...meaning that it currently is not being built as a module by anyone.
Lets remove the couple traces of modular infrastructure use, so that
when reading the driver there is no doubt it is builtin-only.
We delete the MODULE_LICENSE tag etc. since all that information
was (or is now) contained at the top of the file in the comments.
Cc: platform-driver-x86@vger.kernel.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Acked-by: Andres Salomon <dilinger@queued.net> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Arnd Bergmann [Fri, 26 Aug 2016 15:25:45 +0000 (17:25 +0200)]
net_sched: fix use of uninitialized ethertype variable in cls_flower
The addition of VLAN support caused a possible use of uninitialized
data if we encounter a zero TCA_FLOWER_KEY_ETH_TYPE key, as pointed
out by "gcc -Wmaybe-uninitialized":
net/sched/cls_flower.c: In function 'fl_change':
net/sched/cls_flower.c:366:22: error: 'ethertype' may be used uninitialized in this function [-Werror=maybe-uninitialized]
This changes the code to only set the ethertype field if it
was nonzero, as before the patch.
Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: 9399ae9a6cb2 ("net_sched: flower: Add vlan support") Cc: Hadar Hen Zion <hadarh@mellanox.com> Cc: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Arnd Bergmann [Fri, 26 Aug 2016 15:25:46 +0000 (17:25 +0200)]
net/xgene: fix error handling during reset
The newly added reset logic uses helper functions for the MMIO that
may fail. However, when the read operation fails, we end up writing
back uninitialized data to the register, as gcc warns:
drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c: In function 'xgene_enet_link_state':
drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c:213:2: error: 'data' may be used uninitialized in this function [-Werror=maybe-uninitialized]
drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c:209:6: note: 'data' was declared here
u32 data;
We already print a warning to the console log if that happens,
the best alternative that I can see is skip the rest of the reset
sequence if the register value cannot be read: Most likely the
write would fail as well, and if it succeeded, worse things could
happen.
Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: 3eb7cb9dc946 ("drivers: net: xgene: XFI PCS reset when link is down") Cc: Fushen Chen <fchen@apm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net: ethtool: add support for 1000BaseX and missing 10G link modes
This patch enhances ethtool link mode bitmap to include
missing interface modes for 1G/10G speeds
Changes:
1000baseX is the mode introduced to cover all 1G Fiber cases.
All modes under 1000BaseX i.e. 1000BASE-SX, 1000BASE-LX, 1000BASE-LX10
and 1000BASE-BX10 are not explicitly defined at this moment.
10G CR,SR,LR and ER link modes are included for 10G speed..
Issue:
ethtool on 1G/10G SFP port reports Base-T
as this port supports 1000baseX,10G CR, SR and LR modes.
root@tor-02$ ethtool swp1
Settings for swp1:
Supported ports: [ FIBRE ]
Supported link modes: 1000baseT/Full
10000baseT/Full
Supported pause frame use: Symmetric Receive-only
Supports auto-negotiation: Yes
Advertised link modes: 1000baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: No
Speed: 10000Mb/s
Duplex: Full
Port: FIBRE
PHYAD: 0
Transceiver: external
Auto-negotiation: off
Current message level: 0x00000000 (0)
Link detected: yes
After fix:
root@tor-02$ ethtool swp1
Settings for swp1:
Supported ports: [ FIBRE ]
Supported link modes: 1000baseX/Full
10000baseCR/Full
10000baseSR/Full
10000baseLR/Full
10000baseER/Full
Supported pause frame use: Symmetric Receive-only
Supports auto-negotiation: Yes
Advertised link modes: 1000baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: No
Speed: 10000Mb/s
Duplex: Full
Port: FIBRE
PHYAD: 0
Transceiver: external
Auto-negotiation: off
Current message level: 0x00000000 (0)
Link detected: yes
Signed-off-by: Vidya Sagar Ravipati <vidya@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
James Morse [Fri, 26 Aug 2016 08:21:23 +0000 (09:21 +0100)]
amd-xgbe: Reset running devices after resume from hibernate
After resume from hibernate on arm64, any amd-xgbe devices that were
running when we hibernated are reported as down, even when it is not.
Re-plugging the cables does not cause the interface to come back, the
link must be marked as down then up via 'ip set link' using the serial
console.
This happens because the device has been power-cycled and possibly
re-initialised by firmware, whereas the driver's memory structures have
been restored from the hibernate image and the two do not agree.
Schedule a restart of the device after powerup in case the world changed
while we were asleep.
Signed-off-by: James Morse <james.morse@arm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Sat, 27 Aug 2016 14:37:54 +0000 (07:37 -0700)]
tcp: add tcp_add_backlog()
When TCP operates in lossy environments (between 1 and 10 % packet
losses), many SACK blocks can be exchanged, and I noticed we could
drop them on busy senders, if these SACK blocks have to be queued
into the socket backlog.
While the main cause is the poor performance of RACK/SACK processing,
we can try to avoid these drops of valuable information that can lead to
spurious timeouts and retransmits.
Cause of the drops is the skb->truesize overestimation caused by :
- drivers allocating ~2048 (or more) bytes as a fragment to hold an
Ethernet frame.
- various pskb_may_pull() calls bringing the headers into skb->head
might have pulled all the frame content, but skb->truesize could
not be lowered, as the stack has no idea of each fragment truesize.
The backlog drops are also more visible on bidirectional flows, since
their sk_rmem_alloc can be quite big.
Let's add some room for the backlog, as only the socket owner
can selectively take action to lower memory needs, like collapsing
receive queues or partial ofo pruning.
Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Yuchung Cheng <ycheng@google.com> Cc: Neal Cardwell <ncardwell@google.com> Acked-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Russell King [Sat, 27 Aug 2016 16:33:03 +0000 (17:33 +0100)]
net: smc91x: fix SMC accesses
Commit b70661c70830 ("net: smc91x: use run-time configuration on all ARM
machines") broke some ARM platforms through several mistakes. Firstly,
the access size must correspond to the following rule:
(a) at least one of 16-bit or 8-bit access size must be supported
(b) 32-bit accesses are optional, and may be enabled in addition to
the above.
Secondly, it provides no emulation of 16-bit accesses, instead blindly
making 16-bit accesses even when the platform specifies that only 8-bit
is supported.
Reorganise smc91x.h so we can make use of the existing 16-bit access
emulation already provided - if 16-bit accesses are supported, use
16-bit accesses directly, otherwise if 8-bit accesses are supported,
use the provided 16-bit access emulation. If neither, BUG(). This
exactly reflects the driver behaviour prior to the commit being fixed.
Since the conversion incorrectly cut down the available access sizes on
several platforms, we also need to go through every platform and fix up
the overly-restrictive access size: Arnd assumed that if a platform can
perform 32-bit, 16-bit and 8-bit accesses, then only a 32-bit access
size needed to be specified - not so, all available access sizes must
be specified.
This likely fixes some performance regressions in doing this: if a
platform does not support 8-bit accesses, 8-bit accesses have been
emulated by performing a 16-bit read-modify-write access.
Tested on the Intel Assabet/Neponset platform, which supports only 8-bit
accesses, which was broken by the original commit.
Fixes: b70661c70830 ("net: smc91x: use run-time configuration on all ARM machines") Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Tested-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Sat, 27 Aug 2016 22:34:20 +0000 (15:34 -0700)]
Documentation: networking: dsa: Remove platform device TODO
Since commit 83c0afaec7b7 ("net: dsa: Add new binding implementation"),
the shortcomings of the dsa platform device have been addressed, remove
that TODO item.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 29 Aug 2016 03:32:58 +0000 (23:32 -0400)]
Merge branch 'strp-generalization'
Tom Herbert says:
====================
strp: Generalize stream parser to work with other socket types
Add a read_sock protocol operation function that allows something like
tcp_read_sock to be called for other protocol types.
Specific changes in this patch set:
- Add read_sock function to proto_ops. This has the same signature as
tcp_read_sock. sk_read_actor_t is also defined in net.h.
- Set peek_len and read_sock proto_op functions for TCPv4 and TCPv6
stream ops.
- Remove references to tcp in strparser.
- Call peek_len and read_sock operations from strparser instead of
calling TCP specific functions.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Tom Herbert [Sun, 28 Aug 2016 21:43:19 +0000 (14:43 -0700)]
kcm: Remove TCP specific references from kcm and strparser
kcm and strparser need to work with any type of stream socket not just
TCP. Eliminate references to TCP and call generic proto_ops functions of
read_sock and peek_len. Also in strp_init check if the socket support
the proto_ops read_sock and peek_len.
Signed-off-by: Tom Herbert <tom@herbertland.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This series contains some bug fixes for the mlx5 core and mlx5
ethernet driver.
From Saeed, Fix UMR to consider hardware translation table field
size limitation when calculating the maximum number of MTTs required
by the driver. Three patches to speed-up netdevice close time by
serializing channel (SQs & RQs) destruction rather than issuing and
waiting for hardware interrupts to free them.
From Eran, Fix ethtool ring parameter reporting for striding RQ layout.
Add error prints on ETS validation failure.
From Kamal, Fix memory leak on error flow.
From Maor, Fix ethtool steering priorities number.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Maor Gottlieb [Sun, 28 Aug 2016 22:13:50 +0000 (01:13 +0300)]
net/mlx5: Increase number of ethtool steering priorities
Ethtool has 11 flow tables, each flow table has its own priority.
Increase the number of priorities to be aligned with the number of flow
tables.
Fixes: 1174fce8d141 ('net/mlx5e: Support l3/l4 flow type specs in ethtool flow steering') Signed-off-by: Maor Gottlieb <maorg@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eran Ben Elisha [Sun, 28 Aug 2016 22:13:49 +0000 (01:13 +0300)]
net/mlx5: Add error prints when validate ETS failed
Upon set ETS failure due to user invalid input, add error prints to
specify the exact error to the user.
Fixes: cdcf11212b22 ('net/mlx5e: Validate BW weight values of ETS') Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Kamal Heib [Sun, 28 Aug 2016 22:13:48 +0000 (01:13 +0300)]
net/mlx5e: Fix memory leak if refreshing TIRs fails
Free 'in' command object also when mlx5_core_modify_tir fails.
Fixes: 724b2aa15126 ("net/mlx5e: TIRs management refactoring") Signed-off-by: Kamal Heib <kamalh@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Tariq Toukan [Sun, 28 Aug 2016 22:13:47 +0000 (01:13 +0300)]
net/mlx5e: Add ethtool counter for TX xmit_more
Add a counter in ethtool for the number of times that
TX xmit_more was used.
Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eran Ben Elisha [Sun, 28 Aug 2016 22:13:46 +0000 (01:13 +0300)]
net/mlx5e: Fix ethtool -g/G rx ring parameter report with striding RQ
The driver RQ has two possible configurations: striding RQ and
non-striding RQ. Until this patch, the driver always reported the
number of hardware WQEs (ring descriptors). For non striding RQ
configuration, this was OK since we have one WQE per pending packet
For striding RQ, multiple packets can fit into one WQE. For better
user experience we normalize the rx_pending parameter (size of wqe/mtu)
as the average ring size in case of striding RQ.
Fixes: 461017cb006a ('net/mlx5e: Support RX multi-packet WQE ...') Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Saeed Mahameed [Sun, 28 Aug 2016 22:13:45 +0000 (01:13 +0300)]
net/mlx5e: Don't wait for SQ completions on close
Instead of asking the firmware to flush the SQ (Send Queue) via
asynchronous completions when moved to error, we handle SQ flush
manually (mlx5e_free_tx_descs) same as we did when SQ flush got
timed out or on tx_timeout.
This will reduce SQs flush time and speedup interface down procedure.
Moved mlx5e_free_tx_descs to the end of en_tx.c for tx
critical code locality.
Fixes: 29429f3300a3 ('net/mlx5e: Timeout if SQ doesn't flush during close') Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Saeed Mahameed [Sun, 28 Aug 2016 22:13:44 +0000 (01:13 +0300)]
net/mlx5e: Don't post fragmented MPWQE when RQ is disabled
ICO (Internal control operations) SQ (Send Queue) is closed/disabled
after RQ (Receive Queue). After RQ is closed an ICO SQ completion
might post a fragmented MPWQE (Multi Packet Work Queue Element) into
that RQ.
As on regular RQ post, check if we are allowed to post to that
RQ (RQ is enabled). Cleanup in-progress UMR MPWQE on mlx5e_free_rx_descs
if needed.
Fixes: bc77b240b3c5 ('net/mlx5e: Add fragmented memory support for RX multi packet WQE') Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Saeed Mahameed [Sun, 28 Aug 2016 22:13:43 +0000 (01:13 +0300)]
net/mlx5e: Don't wait for RQ completions on close
This will significantly reduce receive queue flush time on interface
down.
Instead of asking the firmware to flush the RQ (Receive Queue) via
asynchronous completions when moved to error, we handle RQ flush
manually (mlx5e_free_rx_descs) same as we did when RQ flush got timed
out.
This will reduce RQs flush time and speedup interface down procedure
(ifconfig down) from 6 sec to 0.3 sec on a 48 cores system.
Moved mlx5e_free_rx_descs en_main.c where it is needed, to keep en_rx.c
free form non critical data path code for better code locality.
Fixes: 6cd392a082de ('net/mlx5e: Handle RQ flush in error cases') Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Saeed Mahameed [Sun, 28 Aug 2016 22:13:42 +0000 (01:13 +0300)]
net/mlx5e: Limit UMR length to the device's limitation
ConnectX-4 UMR (User Memory Region) MTT translation table offset in WQE
is limited to U16_MAX, before this patch we ignored that limitation and
requested the maximum possible UMR translation length that the netdev
might need (MAX channels * MAX pages per channel).
In case of a system with #cores > 32 and when linear WQE allocation fails,
falling back to using UMR WQEs will cause the RQ (Receive Queue) to get
stuck.
Here we limit UMR length to min(U16_MAX, max required pages) (while
considering the required alignments) on driver load, by default U16_MAX is
sufficient since the default RX rings value guarantees that we are in
range, dynamically (on set_ringparam/set_channels) we will check if the
new required UMR length (num mtts) is still in range, if not, fail the
request.
Fixes: bc77b240b3c5 ('net/mlx5e: Add fragmented memory support for RX multi packet WQE') Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Cyril Bur [Tue, 23 Aug 2016 00:46:17 +0000 (10:46 +1000)]
powerpc: signals: Discard transaction state from signal frames
Userspace can begin and suspend a transaction within the signal
handler which means they might enter sys_rt_sigreturn() with the
processor in suspended state.
sys_rt_sigreturn() wants to restore process context (which may have
been in a transaction before signal delivery). To do this it must
restore TM SPRS. To achieve this, any transaction initiated within the
signal frame must be discarded in order to be able to restore TM SPRs
as TM SPRs can only be manipulated non-transactionally..
>From the PowerPC ISA:
TM Bad Thing Exception [Category: Transactional Memory]
An attempt is made to execute a mtspr targeting a TM register in
other than Non-transactional state.
It isn't clear exactly if there is really a use case for userspace
returning with a suspended transaction, however, doing so doesn't (on
its own) constitute a bad frame. As such, this patch simply discards
the transactional state of the context calling the sigreturn and
continues.
Mukesh Ojha [Mon, 22 Aug 2016 06:47:44 +0000 (12:17 +0530)]
powerpc/powernv : Drop reference added by kset_find_obj()
In a situation, where Linux kernel gets notified about duplicate error log
from OPAL, it is been observed that kernel fails to remove sysfs entries
(/sys/firmware/opal/elog/0xXXXXXXXX) of such error logs. This is because,
we currently search the error log/dump kobject in the kset list via
'kset_find_obj()' routine. Which eventually increment the reference count
by one, once it founds the kobject.
So, unless we decrement the reference count by one after it found the kobject,
we would not be able to release the kobject properly later.
This patch adds the 'kobject_put()' which was missing earlier.
Nicholas Piggin [Mon, 25 Jul 2016 04:26:51 +0000 (14:26 +1000)]
powerpc/tm: do not use r13 for tabort_syscall
tabort_syscall runs with RI=1, so a nested recoverable machine
check will load the paca into r13 and overwrite what we loaded
it with, because exceptions returning to privileged mode do not
restore r13.
Fixes: b4b56f9ecab4 (powerpc/tm: Abort syscalls in active transactions) Cc: stable@vger.kernel.org Signed-off-by: Nick Piggin <npiggin@gmail.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Linus Torvalds [Sun, 28 Aug 2016 21:31:36 +0000 (14:31 -0700)]
Merge tag 'drm-fixes-for-4.8-rc4' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"A bunch of fixes covering i915, amdgpu, one tegra and some core DRM
ones. Nothing too strange at this point"
* tag 'drm-fixes-for-4.8-rc4' of git://people.freedesktop.org/~airlied/linux: (21 commits)
drm/atomic: Don't potentially reset color_mgmt_changed on successive property updates.
drm: Protect fb_defio in drivers with CONFIG_KMS_FBDEV_EMULATION
drm/amdgpu: skip TV/CV in display parsing
drm/amdgpu: avoid a possible array overflow
drm/amdgpu: fix lru size grouping v2
drm/tegra: dsi: Enhance runtime power management
drm/i915: Fix botched merge that downgrades CSR versions.
drm/i915/skl: Ensure pipes with changed wms get added to the state
drm/i915/gen9: Only copy WM results for changed pipes to skl_hw
drm/i915/skl: Add support for the SAGV, fix underrun hangs
drm/i915/gen6+: Interpret mailbox error flags
drm/i915: Reattach comment, complete type specification
drm/i915: Unconditionally flush any chipset buffers before execbuf
drm/i915/gen9: Drop invalid WARN() during data rate calculation
drm/i915/gen9: Initialize intel_state->active_crtcs during WM sanitization (v2)
drm: Reject page_flip for !DRIVER_MODESET
drm/amdgpu: fix timeout value check in amd_sched_job_recovery
drm/amdgpu: fix sdma_v2_4_ring_test_ib
drm/amdgpu: fix amdgpu_move_blit on 32bit systems
drm/radeon: fix radeon_move_blit on 32bit systems
...
Mario Kleiner [Fri, 26 Aug 2016 23:02:28 +0000 (01:02 +0200)]
drm/atomic: Don't potentially reset color_mgmt_changed on successive property updates.
Due to assigning the 'replaced' value instead of or'ing it,
if drm_atomic_crtc_set_property() gets called multiple times,
the last call will define the color_mgmt_changed flag, so
a non-updating call to a property can reset the flag and
prevent actual hw state updates required by preceding
property updates.
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com> Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: <stable@vger.kernel.org> # v4.6+ Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@redhat.com>
Linus Torvalds [Sun, 28 Aug 2016 17:02:23 +0000 (10:02 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Thomas Gleixner:
"A few fixes from the perf departement
- prevent a imbalanced preemption disable in the events teardown code
- prevent out of bound acces in perf userspace
- make perf tools compile with UCLIBC again
- a fix for the userspace unwinder utility"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/core: Use this_cpu_ptr() when stopping AUX events
perf evsel: Do not access outside hw cache name arrays
tools lib: Reinstate strlcpy() header guard with __UCLIBC__
perf unwind: Use addr_location::addr instead of ip for entries
Linus Torvalds [Sun, 28 Aug 2016 16:52:40 +0000 (09:52 -0700)]
Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner:
"This lot provides:
- plug a hotplug race in the new affinity infrastructure
- a fix for the trigger type of chained interrupts
- plug a potential memory leak in the core code
- a few fixes for ARM and MIPS GICs"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/mips-gic: Implement activate op for device domain
irqchip/mips-gic: Cleanup chip and handler setup
genirq/affinity: Use get/put_online_cpus around cpumask operations
genirq: Fix potential memleak when failing to get irq pm
irqchip/gicv3-its: Disable the ITS before initializing it
irqchip/gicv3: Remove disabling redistributor and group1 non-secure interrupts
irqchip/gic: Allow self-SGIs for SMP on UP configurations
genirq: Correctly configure the trigger on chained interrupts
Linus Torvalds [Sun, 28 Aug 2016 16:03:05 +0000 (09:03 -0700)]
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:
"A few updates for timers & co:
- prevent a livelock in the timekeeping code when debugging is
enabled
- prevent out of bounds access in the timekeeping debug code
- various fixes in clocksource drivers
- a new maintainers entry"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clocksource/drivers/sun4i: Clear interrupts after stopping timer in probe function
drivers/clocksource/pistachio: Fix memory corruption in init
clocksource/drivers/timer-atmel-pit: Enable mck clock
clocksource/drivers/pxa: Fix include files for compilation
MAINTAINERS: Add ARM ARCHITECTED TIMER entry
timekeeping: Cap array access in timekeeping_debug
timekeeping: Avoid taking lock in NMI path with CONFIG_DEBUG_TIMEKEEPING
Linus Torvalds [Sat, 27 Aug 2016 22:51:50 +0000 (15:51 -0700)]
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"ARM:
- fixes for ITS init issues, error handling, IRQ leakage, race
conditions
- an erratum workaround for timers
- some removal of misleading use of errors and comments
- a fix for GICv3 on 32-bit guests
MIPS:
- fix for where the guest could wrongly map the first page of
physical memory
x86:
- nested virtualization fixes"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
MIPS: KVM: Check for pfn noslot case
kvm: nVMX: fix nested tsc scaling
KVM: nVMX: postpone VMCS changes on MSR_IA32_APICBASE write
KVM: nVMX: fix msr bitmaps to prevent L2 from accessing L0 x2APIC
arm64: KVM: report configured SRE value to 32-bit world
arm64: KVM: remove misleading comment on pmu status
KVM: arm/arm64: timer: Workaround misconfigured timer interrupt
arm64: Document workaround for Cortex-A72 erratum #853709
KVM: arm/arm64: Change misleading use of is_error_pfn
KVM: arm64: ITS: avoid re-mapping LPIs
KVM: arm64: check for ITS device on MSI injection
KVM: arm64: ITS: move ITS registration into first VCPU run
KVM: arm64: vgic-its: Make updates to propbaser/pendbaser atomic
KVM: arm64: vgic-its: Plug race in vgic_put_irq
KVM: arm64: vgic-its: Handle errors from vgic_add_lpi
KVM: arm64: ITS: return 1 on successful MSI injection
Linus Torvalds [Sat, 27 Aug 2016 06:01:09 +0000 (23:01 -0700)]
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma
Pull rdma fixes from Doug Ledford:
"Round one of 4.8 rc fixes.
This should be the bulk of the -rc fixes for 4.8. I only have a few
things that are still outstanding (two ipoib bugs for which the
solution is not yet fully known, and a few queued items that came in
after my last push and I didn't want to delay this pull request for
late comers again).
Even though the patch count is kind of high, everything is minor fixes
so the overall churn is pretty low.
Summary:
- minor fixes to cxgb4
- minor fixes to mlx4
- one minor fix each to core, rxe, isert, srpt, mlx5, ocrdma, and usnic
- six or so fixes to i40iw fixes
- the rest are hfi1 fixes"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (34 commits)
i40iw: Send last streaming mode message for loopback connections
IB/srpt: Update sport->port_guid with each port refresh
RDMA/ocrdma: Fix the max_sge reported from FW
i40iw: Avoid writing to freed memory
i40iw: Fix double free of allocated_buffer
IB/mlx5: Remove superfluous include of io-mapping.h
i40iw: Do not set self-referencing pointer to NULL after kfree
i40iw: Add missing NULL check for MPA private data
iw_cxgb4: Fix cxgb4 arm CQ logic w/IB_CQ_REPORT_MISSED_EVENTS
i40iw: Add missing check for interface already open
i40iw: Protect req_resource_num update
i40iw: Change mem_resources pointer to a u8
IB/core: Use memdup_user() rather than duplicating its implementation
IB/qib: Use memdup_user() rather than duplicating its implementation
iw_cxgb4: use the MPA initiator's IRD if < our ORD
iw_cxgb4: limit IRD/ORD advertised to ULP by device max.
IB/hfi1: Fix mm_struct use after free
IB/rdmvat: Fix double vfree() in rvt_create_qp() error path
IB/hfi1: Improve J_KEY generation
IB/hfi1: Return invalid field for non-QSFP CableInfo queries
...
Linus Torvalds [Sat, 27 Aug 2016 05:53:21 +0000 (22:53 -0700)]
Merge tag 'sound-4.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Here are a bunch of fixes as you can see in diffstat.
One core change in ASoC is about the unexpected unbinding error, and
another about debugfs cleanup.
The rest are wide-spread driver-specific fixes: a series of LINE6 USB
fixes, a HD-audio quirk, and various ASoC fixes including OMAP boot
fixes and Intel SKL fixes"
* tag 'sound-4.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (22 commits)
ALSA: hda/realtek - fix headset mic detection for MSI MS-B120
ASoC: omap-mcpdm: Fix irq resource handling
ASoC: max98371: Add terminate entry for i2c_device_id tables
ALSA: line6: Fix POD sysfs attributes segfault
ALSA: line6: Give up on the lock while URBs are released.
ALSA: line6: Remove double line6_pcm_release() after failed acquire.
ASoC: omap-abe-twl6040: Correct dmic-codec device registration
ASoC: core: Clean up DAPM before the card debugfs
ASoC: omap-mcpdm: Drop pdmclk clock handling
ASoC: atmel_ssc_dai: Don't unconditionally reset SSC on stream startup
ASoC: compress: Fix leak of a widget list in soc_compr_open_fe
ASoC: Intel: Skylake: Fix error return code in skl_probe()
ASoC: wm2000: Fix return of uninitialised varible
ASoC: Fix leak of rtd in soc_bind_dai_link
ASoC: da7213: Default to 64 BCLKs per WCLK to support all formats
ASoC: nau8825: fix static check error about semaphone control
ASoC: nau8825: fix bug in playback when suspend
ASoC: samsung: Fix clock handling in S3C24XX_UDA134X card
ASoC: simple-card-utils: add missing MODULE_xxx()
ASoC: Intel: Skylake: Check list empty while getting module info
...
Eric Dumazet [Fri, 26 Aug 2016 15:51:39 +0000 (08:51 -0700)]
rhashtable: fix a memory leak in alloc_bucket_locks()
If vmalloc() was successful, do not attempt a kmalloc_array()
Fixes: 4cf0b354d92e ("rhashtable: avoid large lock-array allocations") Reported-by: CAI Qian <caiqian@redhat.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Florian Westphal <fw@strlen.de> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Tested-by: CAI Qian <caiqian@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Wei Yongjun [Fri, 26 Aug 2016 14:21:08 +0000 (14:21 +0000)]
chcr: Fix non static symbol warning
Fixes the following sparse warning:
drivers/crypto/chelsio/chcr_algo.c:593:5: warning:
symbol 'cxgb4_is_crypto_q_full' was not declared. Should it be static?
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Jon Cooper [Fri, 26 Aug 2016 14:13:30 +0000 (15:13 +0100)]
sfc: work around TRIGGER_INTERRUPT command not working on SFC9140
MC_CMD_TRIGGER_INTERRUPT does not work on the SFC9140, as used in the
sfn7x42q and sfn7x24f.
Check for this using the MCDI workaround mechanism.
The command is only used during self test. If it's not supported, skip
the interrupt test.
Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Andrew Rybchenko [Fri, 26 Aug 2016 10:19:34 +0000 (11:19 +0100)]
sfc: fix potential stack corruption from running past stat bitmask
On 32-bit systems, mask is only an array of 3 longs, not 4, so don't try
to write to mask[3].
Also include build-time checks in case the size of the bitmask changes.
Fixes: 3c36a2aded8c ("sfc: display vadaptor statistics for all interfaces") Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This series introduces UDP replicast. A concept where we emulate multicast by
sending multiple unicast messages to configured peers. This allows TIPC to be
used in environments where IP multicast is disabled.
There is a corresponding patch series for the tipc user space tool that
allows a user to add remote addresses to the replicast list.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Richard Alpe [Fri, 26 Aug 2016 08:52:56 +0000 (10:52 +0200)]
tipc: add UDP remoteip dump to netlink API
When using replicast a UDP bearer can have an arbitrary amount of
remote ip addresses associated with it. This means we cannot simply
add all remote ip addresses to an existing bearer data message as it
might fill the message, leaving us with a truncated message that we
can't safely resume. To handle this we introduce the new netlink
command TIPC_NL_UDP_GET_REMOTEIP. This command is intended to be
called when the bearer data message has the
TIPC_NLA_UDP_MULTI_REMOTEIP flag set, indicating there are more than
one remote ip (replicast).
Signed-off-by: Richard Alpe <richard.alpe@ericsson.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Richard Alpe [Fri, 26 Aug 2016 08:52:55 +0000 (10:52 +0200)]
tipc: add the ability to get UDP options via netlink
Add UDP bearer options to netlink bearer get message. This is used by
the tipc user space tool to display UDP options.
The UDP bearer information is passed using either a sockaddr_in or
sockaddr_in6 structs. This means the user space receiver should
intermediately store the retrieved data in a large enough struct
(sockaddr_strage) before casting to the proper IP version type.
Signed-off-by: Richard Alpe <richard.alpe@ericsson.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Acked-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Richard Alpe [Fri, 26 Aug 2016 08:52:54 +0000 (10:52 +0200)]
tipc: add replicast peer discovery
Automatically learn UDP remote IP addresses of communicating peers by
looking at the source IP address of incoming TIPC link configuration
messages (neighbor discovery).
This makes configuration slightly easier and removes the problematic
scenario where a node receives directly addressed neighbor discovery
messages sent using replicast which the node cannot "reply" to using
mutlicast, leaving the link FSM in a limbo state.
Signed-off-by: Richard Alpe <richard.alpe@ericsson.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Richard Alpe [Fri, 26 Aug 2016 08:52:53 +0000 (10:52 +0200)]
tipc: introduce UDP replicast
This patch introduces UDP replicast. A concept where we emulate
multicast by sending multiple unicast messages to configured peers.
The purpose of replicast is mainly to be able to use TIPC in cloud
environments where IP multicast is disabled. Using replicas to unicast
multicast messages is costly as we have to copy each skb and send the
copies individually.
Signed-off-by: Richard Alpe <richard.alpe@ericsson.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Richard Alpe [Fri, 26 Aug 2016 08:52:52 +0000 (10:52 +0200)]
tipc: refactor multicast ip check
Add a function to check if a tipc UDP media address is a multicast
address or not. This is a purely cosmetic change.
Signed-off-by: Richard Alpe <richard.alpe@ericsson.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Richard Alpe [Fri, 26 Aug 2016 08:52:51 +0000 (10:52 +0200)]
tipc: split UDP send function
Split the UDP send function into two. One callback that prepares the
skb and one transmit function that sends the skb. This will come in
handy in later patches, when we introduce UDP replicast.
Signed-off-by: Richard Alpe <richard.alpe@ericsson.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Acked-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Richard Alpe [Fri, 26 Aug 2016 08:52:50 +0000 (10:52 +0200)]
tipc: split UDP nl address parsing
Split the UDP netlink parse function so that it only parses one
netlink attribute at the time. This makes the parse function more
generic and allow future UDP API functions to use it for parsing.
Signed-off-by: Richard Alpe <richard.alpe@ericsson.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Acked-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Nelson Chang [Thu, 25 Aug 2016 17:09:42 +0000 (01:09 +0800)]
net: ethernet: mediatek: modify to use the PDMA instead of the QDMA for Ethernet RX
Because the PDMA has richer features than the QDMA for Ethernet RX
(such as multiple RX rings, HW LRO, etc.),
the patch modifies to use the PDMA to handle Ethernet RX.
Acked-by: John Crispin <john@phrozen.org> Signed-off-by: Nelson Chang <nelson.chang@mediatek.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Sat, 27 Aug 2016 03:22:01 +0000 (20:22 -0700)]
Merge branch 'for-linus-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
"We've queued up a few different fixes in here. These range from
enospc corners to fsync and quota fixes, and a few targeted at error
handling for corrupt metadata/fuzzing"
* 'for-linus-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
Btrfs: fix lockdep warning on deadlock against an inode's log mutex
Btrfs: detect corruption when non-root leaf has zero item
Btrfs: check btree node's nritems
btrfs: don't create or leak aliased root while cleaning up orphans
Btrfs: fix em leak in find_first_block_group
btrfs: do not background blkdev_put()
Btrfs: clarify do_chunk_alloc()'s return value
btrfs: fix fsfreeze hang caused by delayed iputs deal
btrfs: update btrfs_space_info's bytes_may_use timely
btrfs: divide btrfs_update_reserved_bytes() into two functions
btrfs: use correct offset for reloc_inode in prealloc_file_extent_cluster()
btrfs: qgroup: Fix qgroup incorrectness caused by log replay
btrfs: relocation: Fix leaking qgroups numbers on data extents
btrfs: qgroup: Refactor btrfs_qgroup_insert_dirty_extent()
btrfs: waiting on qgroup rescan should not always be interruptible
btrfs: properly track when rescan worker is running
btrfs: flush_space: treat return value of do_chunk_alloc properly
Btrfs: add ASSERT for block group's memory leak
btrfs: backref: Fix soft lockup in __merge_refs function
Btrfs: fix memory leak of reloc_root
Linus Torvalds [Sat, 27 Aug 2016 03:15:32 +0000 (20:15 -0700)]
Merge tag 'dm-4.8-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
- another stable fix for DM flakey (that tweaks the previous fix that
didn't factor in expected 'drop_writes' behavior for read IO).
- a dm-log bio operation flags fix for the broader block changes that
were merged during the 4.8 merge window.
* tag 'dm-4.8-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm log: fix unitialized bio operation flags
dm flakey: fix reads to be issued if drop_writes configured
Linus Torvalds [Sat, 27 Aug 2016 03:12:35 +0000 (20:12 -0700)]
Merge tag 'iommu-fixes-v4.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU fixes from Joerg Roedel:
"Fixes from Will Deacon:
- fix a couple of thinkos in the CMDQ error handling and
short-descriptor page table code that have been there since day one
- disable stalling faults, since they may result in hardware deadlock
- fix an accidental BUG() when passing disable_bypass=1 on the
cmdline"
* tag 'iommu-fixes-v4.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/arm-smmu: Don't BUG() if we find aborting STEs with disable_bypass
iommu/arm-smmu: Disable stalling faults for all endpoints
iommu/arm-smmu: Fix CMDQ error handling
iommu/io-pgtable-arm-v7s: Fix attributes when splitting blocks
Linus Torvalds [Sat, 27 Aug 2016 01:50:07 +0000 (18:50 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"Here's a set of block fixes for the current 4.8-rc release. This
contains:
- a fix for a secure erase regression, from Adrian.
- a fix for an mmc use-after-free bug regression, also from Adrian.
- potential zero pointer deference in bdev freezing, from Andrey.
- a race fix for blk_set_queue_dying() from Bart.
- a set of xen blkfront fixes from Bob Liu.
- three small fixes for bcache, from Eric and Kent.
- a fix for a potential invalid NVMe state transition, from Gabriel.
- blk-mq CPU offline fix, preventing us from issuing and completing a
request on the wrong queue. From me.
- revert two previous floppy changes, since they caused a user
visibile regression. A better fix is in the works.
- ensure that we don't send down bios that have more than 256
elements in them. Fixes a crash with bcache, for example. From
Ming.
- a fix for deferencing an error pointer with cgroup writeback.
Fixes a regression. From Vegard"
* 'for-linus' of git://git.kernel.dk/linux-block:
mmc: fix use-after-free of struct request
Revert "floppy: refactor open() flags handling"
Revert "floppy: fix open(O_ACCMODE) for ioctl-only open"
fs/block_dev: fix potential NULL ptr deref in freeze_bdev()
blk-mq: improve warning for running a queue on the wrong CPU
blk-mq: don't overwrite rq->mq_ctx
block: make sure a big bio is split into at most 256 bvecs
nvme: Fix nvme_get/set_features() with a NULL result pointer
bdev: fix NULL pointer dereference
xen-blkfront: free resources if xlvbd_alloc_gendisk fails
xen-blkfront: introduce blkif_set_queue_limits()
xen-blkfront: fix places not updated after introducing 64KB page granularity
bcache: pr_err: more meaningful error message when nr_stripes is invalid
bcache: RESERVE_PRIO is too small by one when prio_buckets() is a power of two.
bcache: register_bcache(): call blkdev_put() when cache_alloc() fails
block: Fix race triggered by blk_set_queue_dying()
block: Fix secure erase
nvme: Prevent controller state invalid transition
MSI:
- Use positive flags in pci_alloc_irq_vectors() (Christoph Hellwig)
- Call pci_intx() when using legacy interrupts in pci_alloc_irq_vectors() (Christoph Hellwig)
* tag 'pci-v4.8-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
x86/PCI: VMD: Fix infinite loop executing irq's
PCI: Call pci_intx() when using legacy interrupts in pci_alloc_irq_vectors()
PCI: Use positive flags in pci_alloc_irq_vectors()
PCI: Update "pci=resource_alignment" documentation
Ross Zwisler [Thu, 25 Aug 2016 22:17:17 +0000 (15:17 -0700)]
mm: silently skip readahead for DAX inodes
For DAX inodes we need to be careful to never have page cache pages in
the mapping->page_tree. This radix tree should be composed only of DAX
exceptional entries and zero pages.
ltp's readahead02 test was triggering a warning because we were trying
to insert a DAX exceptional entry but found that a page cache page had
already been inserted into the tree. This page was being inserted into
the radix tree in response to a readahead(2) call.
Readahead doesn't make sense for DAX inodes, but we don't want it to
report a failure either. Instead, we just return success and don't do
any work.
Link: http://lkml.kernel.org/r/20160824221429.21158-1-ross.zwisler@linux.intel.com Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com> Reported-by: Jeff Moyer <jmoyer@redhat.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Dave Chinner <david@fromorbit.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Jan Kara <jack@suse.com> Cc: <stable@vger.kernel.org> [4.5+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dan Williams [Thu, 25 Aug 2016 22:17:14 +0000 (15:17 -0700)]
dax: fix device-dax region base
The data offset for a dax region needs to account for a reservation in
the resource range. Otherwise, device-dax is allowing mappings directly
into the memmap or device-info-block area with crash signatures like the
following:
Vegard Nossum [Thu, 25 Aug 2016 22:17:11 +0000 (15:17 -0700)]
fs/seq_file: fix out-of-bounds read
seq_read() is a nasty piece of work, not to mention buggy.
It has (I think) an old bug which allows unprivileged userspace to read
beyond the end of m->buf.
I was getting these:
BUG: KASAN: slab-out-of-bounds in seq_read+0xcd2/0x1480 at addr ffff880116889880
Read of size 2713 by task trinity-c2/1329
CPU: 2 PID: 1329 Comm: trinity-c2 Not tainted 4.8.0-rc1+ #96
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.9.3-0-ge2fc41e-prebuilt.qemu-project.org 04/01/2014
Call Trace:
kasan_object_err+0x1c/0x80
kasan_report_error+0x2cb/0x7e0
kasan_report+0x4e/0x80
check_memory_region+0x13e/0x1a0
kasan_check_read+0x11/0x20
seq_read+0xcd2/0x1480
proc_reg_read+0x10b/0x260
do_loop_readv_writev.part.5+0x140/0x2c0
do_readv_writev+0x589/0x860
vfs_readv+0x7b/0xd0
do_readv+0xd8/0x2c0
SyS_readv+0xb/0x10
do_syscall_64+0x1b3/0x4b0
entry_SYSCALL64_slow_path+0x25/0x25
Object at ffff880116889100, in cache kmalloc-4096 size: 4096
Allocated:
PID = 1329
save_stack_trace+0x26/0x80
save_stack+0x46/0xd0
kasan_kmalloc+0xad/0xe0
__kmalloc+0x1aa/0x4a0
seq_buf_alloc+0x35/0x40
seq_read+0x7d8/0x1480
proc_reg_read+0x10b/0x260
do_loop_readv_writev.part.5+0x140/0x2c0
do_readv_writev+0x589/0x860
vfs_readv+0x7b/0xd0
do_readv+0xd8/0x2c0
SyS_readv+0xb/0x10
do_syscall_64+0x1b3/0x4b0
return_from_SYSCALL_64+0x0/0x6a
Freed:
PID = 0
(stack is not available)
Memory state around the buggy address: ffff88011688a000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88011688a080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88011688a100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
^ ffff88011688a180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88011688a200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Disabling lock debugging due to kernel taint
This seems to be the same thing that Dave Jones was seeing here:
https://lkml.org/lkml/2016/8/12/334
There are multiple issues here:
1) If we enter the function with a non-empty buffer, there is an attempt
to flush it. But it was not clearing m->from after doing so, which
means that if we try to do this flush twice in a row without any call
to traverse() in between, we are going to be reading from the wrong
place -- the splat above, fixed by this patch.
2) If there's a short write to userspace because of page faults, the
buffer may already contain multiple lines (i.e. pos has advanced by
more than 1), but we don't save the progress that was made so the
next call will output what we've already returned previously. Since
that is a much less serious issue (and I have a headache after
staring at seq_read() for the past 8 hours), I'll leave that for now.
Link: http://lkml.kernel.org/r/1471447270-32093-1-git-send-email-vegard.nossum@oracle.com Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com> Reported-by: Dave Jones <davej@codemonkey.org.uk> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Arnd Bergmann [Thu, 25 Aug 2016 22:17:08 +0000 (15:17 -0700)]
mm: memcontrol: avoid unused function warning
A bugfix in v4.8-rc2 introduced a harmless warning when
CONFIG_MEMCG_SWAP is disabled but CONFIG_MEMCG is enabled:
mm/memcontrol.c:4085:27: error: 'mem_cgroup_id_get_online' defined but not used [-Werror=unused-function]
static struct mem_cgroup *mem_cgroup_id_get_online(struct mem_cgroup *memcg)
This moves the function inside of the #ifdef block that hides the
calling function, to avoid the warning.
Fixes: 1f47b61fb407 ("mm: memcontrol: fix swap counter leak on swapout from offline cgroup") Link: http://lkml.kernel.org/r/20160824113733.2776701-1-arnd@arndb.de Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Vladimir Davydov <vdavydov@virtuozzo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Michal Hocko [Thu, 25 Aug 2016 22:17:05 +0000 (15:17 -0700)]
mm: clarify COMPACTION Kconfig text
The current wording of the COMPACTION Kconfig help text doesn't
emphasise that disabling COMPACTION might cripple the page allocator
which relies on the compaction quite heavily for high order requests and
an unexpected OOM can happen with the lack of compaction. Make sure we
are vocal about that.
Link: http://lkml.kernel.org/r/20160823091726.GK23577@dhcp22.suse.cz Signed-off-by: Michal Hocko <mhocko@suse.com> Cc: Markus Trippelsdorf <markus@trippelsdorf.de> Cc: Mel Gorman <mgorman@suse.de> Cc: Joonsoo Kim <js1304@gmail.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Masahiro Yamada [Thu, 25 Aug 2016 22:17:02 +0000 (15:17 -0700)]
treewide: replace config_enabled() with IS_ENABLED() (2nd round)
Commit 97f2645f358b ("tree-wide: replace config_enabled() with
IS_ENABLED()") mostly killed config_enabled(), but some new users have
appeared for v4.8-rc1. They are all used for a boolean option, so can
be replaced with IS_ENABLED() safely.
Link: http://lkml.kernel.org/r/1471970749-24867-1-git-send-email-yamada.masahiro@socionext.com Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Kees Cook <keescook@chromium.org> Acked-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
projects / linux-beck.git / log