Clarify that rhashtable_walk_{stop,start} will not reset the iterator to
the beginning of the hash table.  Confusion between rhashtable_walk_enter
and rhashtable_walk_start has already lead to a bug.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Since the integration of PHYLINK, the configuration option which
used to be under the PHY infrastructure menu in menuconfig ended
up one level up (the network device driver section)

By placing PHYLINK option right after PHYLIB entry, it broke the
way Kconfig used to build the menu. See kconfig-language.txt, section
"Menu structure", 2nd method.

This is fixed by placing the PHYLINK option just before PHYLIB.

Fixes: 9525ae83 ("phylink: add phylink infrastructure")
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge tag 'mac80211-for-davem-2017-11-19' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211

Johannes Berg says:

====================
Just two netlink fixes, both allowing privileged users
to crash the kernel with malformed netlink messages.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Remove Yuval from maintaining the bnx2x & qed* modules as he is no longer
working for the company. Thanks Yuval for your huge contributions and
tireless efforts over the many years and various companies.

Ariel
Signed-off-by: Ariel Elior <aelior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

There are several problems with commit 10377ba7 ("net: systemport:
Support 64bit statistics", first one got fixed in 7095c973 ("net:
systemport: Fix 64-bit stats deadlock").

The second problem is that this specific code updates the
stats64.tx_{packets,bytes} from ndo_get_stats64() and that is what we
are returning to ethtool -S. If we are not running a tool that involves
calling ndo_get_stats64(), then we won't get updated ethtool stats.

The solution to this is to update the stats from both call sites,
factoring that into a specific function, While at it, don't just check
the sizeof() but also the type of the statistics in order to use the
64-bit stats seqlock.

Fixes: 10377ba7 ("net: systemport: Support 64bit statistics")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

It seems we have to be more careful in napi_complete_done()
use. This patch is not a revert, as it seems we can
avoid bug that Ville reported by moving the napi_complete_done()
test in the spinlock section.

Many thanks to Ville for detective work and all tests.

Fixes: 617f0121 ("8139too: use napi_complete_done()")
Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Tested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

remove tcp_may_send_now and tcp_snd_test that are no longer used

Fixes: 840a3cbe ("tcp: remove forward retransmit feature")
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

If bpf_map_precharge_memlock in dev_map_alloc, -ENOMEM is returned
regardless of the actual error produced by bpf_map_precharge_memlock.
Fix it by passing on the error returned by bpf_map_precharge_memlock.

Also return -EINVAL instead of -ENOMEM if the page count overflow check
fails.

This makes dev_map_alloc match the behavior of other bpf maps' alloc
functions wrt. return values.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Check for ingress-only qdisc for flower offload, as other qdiscs
are not supported for flower offload.
Suggested-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Sathya Perla <sathya.perla@broadcom.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Fix ASCII art in Documentation/networking/switchdev.txt:

Change non-ASCII "spaces" to ASCII spaces.

Change 2 erroneous '+' characters in ASCII art to '-' (at the '*'
characters below):

line 32:
                     +--+----+----+----+-*--+----+---+  +-----+-----+
line 41:
                     +--------------+---*------------+
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

this script, edited from Linux Advanced Routing and Traffic Control guide

tc q a dev en0 root handle 1: htb default a
tc c a dev en0 parent 1:  classid 1:1 htb rate 6mbit burst 15k
tc c a dev en0 parent 1:1 classid 1:a htb rate 5mbit ceil 6mbit burst 15k
tc c a dev en0 parent 1:1 classid 1:b htb rate 1mbit ceil 6mbit burst 15k
tc f a dev en0 parent 1:0 prio 1 $clsname $clsargs classid 1:b
ping $address -c1
tc -s c s dev en0

classifies traffic to 1:b or 1:a, depending on whether the packet matches
or not the pattern $clsargs of filter $clsname. However, when $clsname is
'matchall', a systematic crash can be observed in htb_classify(). HTB and
classful qdiscs don't assign initial value to struct tcf_result, but then
they expect it to contain valid values after filters have been run. Thus,
current 'matchall' ignores the TCA_MATCHALL_CLASSID attribute, configured
by user, and makes HTB (and classful qdiscs) dereference random pointers.

By assigning head->res to *res in mall_classify(), before the actions are
invoked, we fix this crash and enable TCA_MATCHALL_CLASSID functionality,
that had no effect on 'matchall' classifier since its first introduction.

BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1460213Reported-by: Jiri Benc <jbenc@redhat.com>
Fixes: b87f7936 ("net/sched: introduce Match-all classifier")
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Acked-by: Yotam Gigi <yotamg@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

If ipv6 has been disabled from cmdline since kernel started, it makes
no sense to allow users to create any ip6 tunnel. Otherwise, it could
some potential problem.

Jianlin found a kernel crash caused by this in ip6_gre when he set
ipv6.disable=1 in grub:

[  209.588865] Unable to handle kernel paging request for data at address 0x00000080
[  209.588872] Faulting instruction address: 0xc000000000a3aa6c
[  209.588879] Oops: Kernel access of bad area, sig: 11 [#1]
[  209.589062] NIP [c000000000a3aa6c] fib_rules_lookup+0x4c/0x260
[  209.589071] LR [c000000000b9ad90] fib6_rule_lookup+0x50/0xb0
[  209.589076] Call Trace:
[  209.589097] fib6_rule_lookup+0x50/0xb0
[  209.589106] rt6_lookup+0xc4/0x110
[  209.589116] ip6gre_tnl_link_config+0x214/0x2f0 [ip6_gre]
[  209.589125] ip6gre_newlink+0x138/0x3a0 [ip6_gre]
[  209.589134] rtnl_newlink+0x798/0xb80
[  209.589142] rtnetlink_rcv_msg+0xec/0x390
[  209.589151] netlink_rcv_skb+0x138/0x150
[  209.589159] rtnetlink_rcv+0x48/0x70
[  209.589169] netlink_unicast+0x538/0x640
[  209.589175] netlink_sendmsg+0x40c/0x480
[  209.589184] ___sys_sendmsg+0x384/0x4e0
[  209.589194] SyS_sendmsg+0xd4/0x140
[  209.589201] SyS_socketcall+0x3e0/0x4f0
[  209.589209] system_call+0x38/0xe0

This patch is to return -EOPNOTSUPP in ip6_tunnel_init if ipv6 has been
disabled from cmdline.
Reported-by: Jianlin Shi <jishi@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

To clear Speed Selection in MDIO control register(0x10),
ie, clear bits 6 and 13 to zero while keeping other bits same.
Before AND operation,The Mask value has to be perform with bitwise NOT
operation (ie, ~ operator)

This patch clears current speed selection before writing the
new speed settings to gmii2rgmii converter

Fixes: f411a616 ("net: phy: Add gmiitorgmii converter support")
Signed-off-by: Fahad Kunnathadi <fahad.kunnathadi@dexceldesigns.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

Now in ip6gre_header before packing the ipv6 header, it skb_push t->hlen
which only includes encap_hlen + tun_hlen. It means greh and inner header
would be over written by ipv6 stuff and ipv6h might have no chance to set
up.

Jianlin found this issue when using remote any on ip6_gre, the packets he
captured on gre dev are truncated:

22:50:26.210866 Out ethertype IPv6 (0x86dd), length 120: truncated-ip6 -\
8128 bytes missing!(flowlabel 0x92f40, hlim 0, next-header Options (0)  \
payload length: 8192) ::1:2000:0 > ::1:0:86dd: HBH [trunc] ip-proto-128 \
8184

It should also skb_push ipv6hdr so that ipv6h points to the right position
to set ipv6 stuff up.

This patch is to skb_push hlen + sizeof(*ipv6h) and also fix some indents
in ip6gre_header.

Fixes: c12b395a ("gre: Support GRE over IPv6")
Reported-by: Jianlin Shi <jishi@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

If TX rates are specified during mesh join, the channel must
also be specified. Check the channel pointer to avoid a null
pointer dereference if it isn't.
Reported-by: Jouni Malinen <j@w1.fi>
Fixes: 8564e382 ("cfg80211: add checks for beacon rate, extend to mesh")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

While trying an ESP transport mode encryption for UDPv6 packets of
datagram size 1436 with MTU 1500, checksum error was observed in
the secondary fragment.

This error occurs due to the UDP payload checksum being missed out
when computing the full checksum for these packets in
udp6_hwcsum_outgoing().

Fixes: d39d938c ("ipv6: Introduce udpv6_send_skb()")
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Pull UBI updates from Richard Weinberger:
 "Minor improvements"

* tag 'upstream-4.14-rc1' of git://git.infradead.org/linux-ubifs:
  UBI: Fix two typos in comments
  ubi: fastmap: fix spelling mistake: "invalidiate" -> "invalidate"
  ubi: pr_err() strings should end with newlines
  ubi: pr_err() strings should end with newlines
  ubi: pr_err() strings should end with newlines

Pull UML updates from Richard Weinberger:

 - minor improvements

 - fixes for Debian's new gcc defaults (pie enabled by default)

 - fixes for XSTATE/XSAVE to make UML work again on modern systems

* 'for-linus-4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
  um: return negative in tuntap_open_tramp()
  um: remove a stray tab
  um: Use relative modversions with LD_SCRIPT_DYN
  um: link vmlinux with -no-pie
  um: Fix CONFIG_GCOV for modules.
  Fix minor typos and grammar in UML start_up help
  um: defconfig: Cleanup from old Kconfig options
  um: Fix FP register size for XSTATE/XSAVE

Pull networking fixes from David Miller:

 1) Fix hotplug deadlock in hv_netvsc, from Stephen Hemminger.

 2) Fix double-free in rmnet driver, from Dan Carpenter.

 3) INET connection socket layer can double put request sockets, fix
    from Eric Dumazet.

 4) Don't match collect metadata-mode tunnels if the device is down,
    from Haishuang Yan.

 5) Do not perform TSO6/GSO on ipv6 packets with extensions headers in
    be2net driver, from Suresh Reddy.

 6) Fix scaling error in gen_estimator, from Eric Dumazet.

 7) Fix 64-bit statistics deadlock in systemport driver, from Florian
    Fainelli.

 8) Fix use-after-free in sctp_sock_dump, from Xin Long.

 9) Reject invalid BPF_END instructions in verifier, from Edward Cree.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (43 commits)
  mlxsw: spectrum_router: Only handle IPv4 and IPv6 events
  Documentation: link in networking docs
  tcp: fix data delivery rate
  bpf/verifier: reject BPF_ALU64|BPF_END
  sctp: do not mark sk dumped when inet_sctp_diag_fill returns err
  sctp: fix an use-after-free issue in sctp_sock_dump
  netvsc: increase default receive buffer size
  tcp: update skb->skb_mstamp more carefully
  net: ipv4: fix l3slave check for index returned in IP_PKTINFO
  net: smsc911x: Quieten netif during suspend
  net: systemport: Fix 64-bit stats deadlock
  net: vrf: avoid gcc-4.6 warning
  qed: remove unnecessary call to memset
  tg3: clean up redundant initialization of tnapi
  tls: make tls_sw_free_resources static
  sctp: potential read out of bounds in sctp_ulpevent_type_enabled()
  MAINTAINERS: review Renesas DT bindings as well
  net_sched: gen_estimator: fix scaling error in bytes/packets samples
  nfp: wait for the NSP resource to appear on boot
  nfp: wait for board state before talking to the NSP
  ...

Pull more input updates from Dmitry Torokhov:
 "A second round of updates for the input subsystem:

   - a new driver for PWM-controlled vibrators

   - ucb1400 touchscreen driver had completely busted suspend/resume
     handling

   - we now handle "home" button found on some devices with Goodix
     touchscreens

   - assorted other fixups"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: i8042 - add Gigabyte P57 to the keyboard reset table
  Input: xpad - validate USB endpoint type during probe
  Input: ucb1400_ts - fix suspend and resume handling
  Input: edt-ft5x06 - fix access to non-existing register
  Input: elantech - make arrays debounce_packet static, reduces object code size
  Input: surface3_spi - make const array header static, reduces object code size
  Input: goodix - add support for capacitive home button
  Input: add a driver for PWM controllable vibrators
  Input: adi - make array seq static, reduces object code size

Commit 5620a0d1 ("firmware: delete in-kernel firmware") removed the
entire firmware directory.  Unfortunately it thereby also removed the
support for built-in firmware.

This restores the ability to build firmware directly into the kernel by
pruning the original Makefile to the necessary minimum.  The default for
EXTRA_FIRMWARE_DIR is now the standard directory /lib/firmware/.

Fixes: 5620a0d1 ("firmware: delete in-kernel firmware")
Signed-off-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Acked-by: Greg K-H <gregkh@linuxfoundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

The driver doesn't support events from address families other than IPv4
and IPv6, so ignore them. Otherwise, we risk queueing a work item before
it's initialized.

This can happen in case a VRF is configured when MROUTE_MULTIPLE_TABLES
is enabled, as the VRF driver will try to add an l3mdev rule for the
IPMR family.

Fixes: 65e65ec1 ("mlxsw: spectrum_router: Don't ignore IPv6 notifications")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reported-by: Andreas Rammhold <andreas@rammhold.de>
Reported-by: Florian Klink <flokli@flokli.de>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Fix link in filter.txt.
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>

Now skb->mstamp_skb is updated later, we also need to call
tcp_rate_skb_sent() after the update is done.

Fixes: 8c72c65b ("tcp: update skb->skb_mstamp more carefully")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Pull MIPS updates from Ralf Baechle:
 "This is the main pull request for 4.14 for MIPS; below a summary of
  the non-merge commits:

  CM:
   - Rename mips_cm_base to mips_gcr_base
   - Specify register size when generating accessors
   - Use BIT/GENMASK for register fields, order & drop shifts
   - Add cluster & block args to mips_cm_lock_other()

  CPC:
   - Use common CPS accessor generation macros
   - Use BIT/GENMASK for register fields, order & drop shifts
   - Introduce register modify (set/clear/change) accessors
   - Use change_*, set_* & clear_* where appropriate
   - Add CM/CPC 3.5 register definitions
   - Use GlobalNumber macros rather than magic numbers
   - Have asm/mips-cps.h include CM & CPC headers
   - Cluster support for topology functions
   - Detect CPUs in secondary clusters

  CPS:
   - Read GIC_VL_IDENT directly, not via irqchip driver

  DMA:
   - Consolidate coherent and non-coherent dma_alloc code
   - Don't use dma_cache_sync to implement fd_cacheflush

  FPU emulation / FP assist code:
   - Another series of 14 commits fixing corner cases such as NaN
     propgagation and other special input values.
   - Zero bits 32-63 of the result for a CLASS.D instruction.
   - Enhanced statics via debugfs
   - Do not use bools for arithmetic. GCC 7.1 moans about this.
   - Correct user fault_addr type

  Generic MIPS:
   - Enhancement of stack backtraces
   - Cleanup from non-existing options
   - Handle non word sized instructions when examining frame
   - Fix detection and decoding of ADDIUSP instruction
   - Fix decoding of SWSP16 instruction
   - Refactor handling of stack pointer in get_frame_info
   - Remove unreachable code from force_fcr31_sig()
   - Convert to using %pOF instead of full_name
   - Remove the R6000 support.
   - Move FP code from *_switch.S to *_fpu.S
   - Remove unused ST_OFF from r2300_switch.S
   - Allow platform to specify multiple its.S files
   - Add #includes to various files to ensure code builds reliable and
     without warning..
   - Remove __invalidate_kernel_vmap_range
   - Remove plat_timer_setup
   - Declare various variables & functions static
   - Abstract CPU core & VP(E) ID access through accessor functions
   - Store core & VP IDs in GlobalNumber-style variable
   - Unify checks for sibling CPUs
   - Add CPU cluster number accessors
   - Prevent direct use of generic_defconfig
   - Make CONFIG_MIPS_MT_SMP default y
   - Add __ioread64_copy
   - Remove unnecessary inclusions of linux/irqchip/mips-gic.h

  GIC:
   - Introduce asm/mips-gic.h with accessor functions
   - Use new GIC accessor functions in mips-gic-timer
   - Remove counter access functions from irq-mips-gic.c
   - Remove gic_read_local_vp_id() from irq-mips-gic.c
   - Simplify shared interrupt pending/mask reads in irq-mips-gic.c
   - Simplify gic_local_irq_domain_map() in irq-mips-gic.c
   - Drop gic_(re)set_mask() functions in irq-mips-gic.c
   - Remove gic_set_polarity(), gic_set_trigger(), gic_set_dual_edge(),
     gic_map_to_pin() and gic_map_to_vpe() from irq-mips-gic.c.
   - Convert remaining shared reg access, local int mask access and
     remaining local reg access to new accessors
   - Move GIC_LOCAL_INT_* to asm/mips-gic.h
   - Remove GIC_CPU_INT* macros from irq-mips-gic.c
   - Move various definitions to the driver
   - Remove gic_get_usm_range()
   - Remove __gic_irq_dispatch() forward declaration
   - Remove gic_init()
   - Use mips_gic_present() in place of gic_present and remove
     gic_present
   - Move gic_get_c0_*_int() to asm/mips-gic.h
   - Remove linux/irqchip/mips-gic.h
   - Inline __gic_init()
   - Inline gic_basic_init()
   - Make pcpu_masks a per-cpu variable
   - Use pcpu_masks to avoid reading GIC_SH_MASK*
   - Clean up mti, reserved-cpu-vectors handling
   - Use cpumask_first_and() in gic_set_affinity()
   - Let the core set struct irq_common_data affinity

  microMIPS:
   - Fix microMIPS stack unwinding on big endian systems

  MIPS-GIC:
   - SYNC after enabling GIC region

  NUMA:
   - Remove the unused parent_node() macro

  R6:
   - Constify r2_decoder_tables
   - Add accessor & bit definitions for GlobalNumber

  SMP:
   - Constify smp ops
   - Allow boot_secondary SMP op to return errors

  VDSO:
   - Drop gic_get_usm_range() usage
   - Avoid use of linux/irqchip/mips-gic.h

  Platform changes:

  Alchemy:
   - Add devboard machine type to cpuinfo
   - update cpu feature overrides
   - Threaded carddetect irqs for devboards

  AR7:
   - allow NULL clock for clk_get_rate

  BCM63xx:
   - Fix ENETDMA_6345_MAXBURST_REG offset
   - Allow NULL clock for clk_get_rate

  CI20:
   - Enable GPIO and RTC drivers in defconfig
   - Add ethernet and fixed-regulator nodes to DTS

  Generic platform:
   - Move Boston and NI 169445 FIT image source to their own files
   - Include asm/bootinfo.h for plat_fdt_relocated()
   - Include asm/time.h for get_c0_*_int()
   - Include asm/bootinfo.h for plat_fdt_relocated()
   - Include asm/time.h for get_c0_*_int()
   - Allow filtering enabled boards by requirements
   - Don't explicitly disable CONFIG_USB_SUPPORT
   - Bump default NR_CPUS to 16

  JZ4700:
   - Probe the jz4740-rtc driver from devicetree

  Lantiq:
   - Drop check of boot select from the spi-falcon driver.
   - Drop check of boot select from the lantiq-flash MTD driver.
   - Access boot cause register in the watchdog driver through regmap
   - Add device tree binding documentation for the watchdog driver
   - Add docs for the RCU DT bindings.
   - Convert the fpi bus driver to a platform_driver
   - Remove ltq_reset_cause() and ltq_boot_select(
   - Switch to a proper reset driver
   - Switch to a new drivers/soc GPHY driver
   - Add an USB PHY driver for the Lantiq SoCs using the RCU module
   - Use of_platform_default_populate instead of __dt_register_buses
   - Enable MFD_SYSCON to be able to use it for the RCU MFD
   - Replace ltq_boot_select() with dummy implementation.

  Loongson 2F:
   - Allow NULL clock for clk_get_rate

  Malta:
   - Use new GIC accessor functions

  NI 169445:
   - Add support for NI 169445 board.
   - Only include in 32r2el kernels

  Octeon:
   - Add support for watchdog of 78XX SOCs.
   - Add support for watchdog of CN68XX SOCs.
   - Expose support for mips32r1, mips32r2 and mips64r1
   - Enable more drivers in config file
   - Add support for accessing the boot vector.
   - Remove old boot vector code from watchdog driver
   - Define watchdog registers for 70xx, 73xx, 78xx, F75xx.
   - Make CSR functions node aware.
   - Allow access to CIU3 IRQ domains.
   - Misc cleanups in the watchdog driver

  Omega2+:
   - New board, add support and defconfig

  Pistachio:
   - Enable Root FS on NFS in defconfig

  Ralink:
   - Add Mediatek MT7628A SoC
   - Allow NULL clock for clk_get_rate
   - Explicitly request exclusive reset control in the pci-mt7620 PCI driver.

  SEAD3:
   - Only include in 32 bit kernels by default

  VoCore:
   - Add VoCore as a vendor t0 dt-bindings
   - Add defconfig file"

* '4.14-features' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (167 commits)
  MIPS: Refactor handling of stack pointer in get_frame_info
  MIPS: Stacktrace: Fix microMIPS stack unwinding on big endian systems
  MIPS: microMIPS: Fix decoding of swsp16 instruction
  MIPS: microMIPS: Fix decoding of addiusp instruction
  MIPS: microMIPS: Fix detection of addiusp instruction
  MIPS: Handle non word sized instructions when examining frame
  MIPS: ralink: allow NULL clock for clk_get_rate
  MIPS: Loongson 2F: allow NULL clock for clk_get_rate
  MIPS: BCM63XX: allow NULL clock for clk_get_rate
  MIPS: AR7: allow NULL clock for clk_get_rate
  MIPS: BCM63XX: fix ENETDMA_6345_MAXBURST_REG offset
  mips: Save all registers when saving the frame
  MIPS: Add DWARF unwinding to assembly
  MIPS: Make SAVE_SOME more standard
  MIPS: Fix issues in backtraces
  MIPS: jz4780: DTS: Probe the jz4740-rtc driver from devicetree
  MIPS: Ci20: Enable RTC driver
  watchdog: octeon-wdt: Add support for 78XX SOCs.
  watchdog: octeon-wdt: Add support for cn68XX SOCs.
  watchdog: octeon-wdt: File cleaning.
  ...

Pull PCI fix from Bjorn Helgaas:
 "Revert an attempt to fix a race while enabling upstream bridges
  because it broke iwlwifi firmware loading"

* tag 'pci-v4.14-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  Revert "PCI: Avoid race while enabling upstream bridges"

Pull drm AMD fixes from Dave Airlie:
 "Just had a single AMD fixes pull from Alex for rc1"

* tag 'drm-fixes-for-v4.14-rc1' of git://people.freedesktop.org/~airlied/linux:
  drm/amdgpu: revert "fix deadlock of reservation between cs and gpu reset v2"
  drm/amdgpu: remove duplicate return statement
  drm/amdgpu: check memory allocation failure
  drm/amd/amdgpu: fix BANK_SELECT on Vega10 (v2)
  drm/amdgpu: inline amdgpu_ttm_do_bind again
  drm/amdgpu: fix amdgpu_ttm_bind
  drm/amdgpu: remove the GART copy hack
  drm/ttm:fix wrong decoding of bo_count
  drm/ttm: fix missing inc bo_count
  drm/amdgpu: set sched_hw_submission higher for KIQ (v3)
  drm/amdgpu: move default gart size setting into gmc modules
  drm/amdgpu: refine default gart size
  drm/amd/powerplay: ACG frequency added in PPTable
  drm/amdgpu: discard commands of killed processes
  drm/amdgpu: fix and cleanup shadow handling
  drm/amdgpu: add automatic per asic settings for gart_size
  drm/amdgpu/gfx8: fix spelling typo in mqd allocation
  drm/amd/powerplay: unhalt mec after loading
  drm/amdgpu/virtual_dce: Virtual display doesn't support disable vblank immediately
  drm/amdgpu: Fix huge page updates with CPU

Pull more i2c updates from Wolfram Sang:
 "I2C has two more new drivers: Altera FPGA and STM32F7"

* 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: i2c-stm32f7: add driver
  i2c: i2c-stm32f4: use generic definition of speed enum
  dt-bindings: i2c-stm32: Document the STM32F7 I2C bindings
  i2c: altera: Add Altera I2C Controller driver
  dt-bindings: i2c: Add Altera I2C Controller

Pull more KVM updates from Paolo Bonzini:
 - PPC bugfixes
 - RCU splat fix
 - swait races fix
 - pointless userspace-triggerable BUG() fix
 - misc fixes for KVM_RUN corner cases
 - nested virt correctness fixes + one host DoS
 - some cleanups
 - clang build fix
 - fix AMD AVIC with default QEMU command line options
 - x86 bugfixes

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (28 commits)
  kvm: nVMX: Handle deferred early VMLAUNCH/VMRESUME failure properly
  kvm: vmx: Handle VMLAUNCH/VMRESUME failure properly
  kvm: nVMX: Remove nested_vmx_succeed after successful VM-entry
  kvm,mips: Fix potential swait_active() races
  kvm,powerpc: Serialize wq active checks in ops->vcpu_kick
  kvm: Serialize wq active checks in kvm_vcpu_wake_up()
  kvm,x86: Fix apf_task_wake_one() wq serialization
  kvm,lapic: Justify use of swait_active()
  kvm,async_pf: Use swq_has_sleeper()
  sched/wait: Add swq_has_sleeper()
  KVM: VMX: Do not BUG() on out-of-bounds guest IRQ
  KVM: Don't accept obviously wrong gsi values via KVM_IRQFD
  kvm: nVMX: Don't allow L2 to access the hardware CR8
  KVM: trace events: update list of exit reasons
  KVM: async_pf: Fix #DF due to inject "Page not Present" and "Page Ready" exceptions simultaneously
  KVM: X86: Don't block vCPU if there is pending exception
  KVM: SVM: Add irqchip_split() checks before enabling AVIC
  KVM: Add struct kvm_vcpu pointer parameter to get_enable_apicv()
  KVM: SVM: Refactor AVIC vcpu initialization into avic_init_vcpu()
  KVM: x86: fix clang build
  ...

Neither ___bpf_prog_run nor the JITs accept it.
Also adds a new test case.

Fixes: 17a52670 ("bpf: verifier (add verifier core)")
Signed-off-by: Edward Cree <ecree@solarflare.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

sctp_diag would not actually dump out sk/asoc if inet_sctp_diag_fill
returns err, in which case it shouldn't mark sk dumped by setting
cb->args[3] as 1 in sctp_sock_dump().

Otherwise, it could cause some asocs to have no parent's sk dumped
in 'ss --sctp'.

So this patch is to not set cb->args[3] when inet_sctp_diag_fill()
returns err in sctp_sock_dump().

Fixes: 8f840e47 ("sctp: add the sctp_diag.c file")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Commit 86fdb344 ("sctp: ensure ep is not destroyed before doing the
dump") tried to fix an use-after-free issue by checking !sctp_sk(sk)->ep
with holding sock and sock lock.

But Paolo noticed that endpoint could be destroyed in sctp_rcv without
sock lock protection. It means the use-after-free issue still could be
triggered when sctp_rcv put and destroy ep after sctp_sock_dump checks
!ep, although it's pretty hard to reproduce.

I could reproduce it by mdelay in sctp_rcv while msleep in sctp_close
and sctp_sock_dump long time.

This patch is to add another param cb_done to sctp_for_each_transport
and dump ep->assocs with holding tsp after jumping out of transport's
traversal in it to avoid this issue.

It can also improve sctp diag dump to make it run faster, as no need
to save sk into cb->args[5] and keep calling sctp_for_each_transport
any more.

This patch is also to use int * instead of int for the pos argument
in sctp_for_each_transport, which could make postion increment only
in sctp_for_each_transport and no need to keep changing cb->args[2]
in sctp_sock_filter and sctp_sock_dump any more.

Fixes: 86fdb344 ("sctp: ensure ep is not destroyed before doing the dump")
Reported-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The default receive buffer size was reduced by recent change
to a value which was appropriate for 10G and Windows Server 2016.
But the value is too small for full performance with 40G on Azure.
Increase the default back to maximum supported by host.

Fixes: 8b532797 ("netvsc: allow controlling send/recv buffer size")
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

liujian reported a problem in TCP_USER_TIMEOUT processing with a patch
in tcp_probe_timer() :
      https://www.spinics.net/lists/netdev/msg454496.html

After investigations, the root cause of the problem is that we update
skb->skb_mstamp of skbs in write queue, even if the attempt to send a
clone or copy of it failed. One reason being a routing problem.

This patch prevents this, solving liujian issue.

It also removes a potential RTT miscalculation, since
__tcp_retransmit_skb() is not OR-ing TCP_SKB_CB(skb)->sacked with
TCPCB_EVER_RETRANS if a failure happens, but skb->skb_mstamp has
been changed.

A future ACK would then lead to a very small RTT sample and min_rtt
would then be lowered to this too small value.

Tested:

# cat user_timeout.pkt
--local_ip=192.168.102.64

    0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
   +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
   +0 bind(3, ..., ...) = 0
   +0 listen(3, 1) = 0

   +0 `ifconfig tun0 192.168.102.64/16; ip ro add 192.0.2.1 dev tun0`

   +0 < S 0:0(0) win 0 <mss 1460>
   +0 > S. 0:0(0) ack 1 <mss 1460>

  +.1 < . 1:1(0) ack 1 win 65530
   +0 accept(3, ..., ...) = 4

   +0 setsockopt(4, SOL_TCP, TCP_USER_TIMEOUT, [3000], 4) = 0
   +0 write(4, ..., 24) = 24
   +0 > P. 1:25(24) ack 1 win 29200
   +.1 < . 1:1(0) ack 25 win 65530

//change the ipaddress
   +1 `ifconfig tun0 192.168.0.10/16`

   +1 write(4, ..., 24) = 24
   +1 write(4, ..., 24) = 24
   +1 write(4, ..., 24) = 24
   +1 write(4, ..., 24) = 24

   +0 `ifconfig tun0 192.168.102.64/16`
   +0 < . 1:2(1) ack 25 win 65530
   +0 `ifconfig tun0 192.168.0.10/16`

   +3 write(4, ..., 24) = -1

# ./packetdrill user_timeout.pkt
Signed-off-by: Eric Dumazet <edumazet@googl.com>
Reported-by: liujian <liujian56@huawei.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

rt_iif is only set to the actual egress device for the output path. The
recent change to consider the l3slave flag when returning IP_PKTINFO
works for local traffic (the correct device index is returned), but it
broke the more typical use case of packets received from a remote host
always returning the VRF index rather than the original ingress device.
Update the fixup to consider l3slave and rt_iif actually getting set.

Fixes: 1dfa7639 ("net: ipv4: add check for l3slave for index returned in IP_PKTINFO")
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

If the network interface is kept running during suspend, the net core
may call net_device_ops.ndo_start_xmit() while the Ethernet device is
still suspended, which may lead to a system crash.

E.g. on sh73a0/kzm9g and r8a73a4/ape6evm, the external Ethernet chip is
driven by a PM controlled clock.  If the Ethernet registers are accessed
while the clock is not running, the system will crash with an imprecise
external abort.

As this is a race condition with a small time window, it is not so easy
to trigger at will.  Using pm_test may increase your chances:

    # echo 0 > /sys/module/printk/parameters/console_suspend
    # echo platform > /sys/power/pm_test
    # echo mem > /sys/power/state

To fix this, make sure the network interface is quietened during
suspend.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

We can enter a deadlock situation because there is no sufficient protection
when ndo_get_stats64() runs in process context to guard against RX or TX NAPI
contexts running in softirq, this can lead to the following lockdep splat and
actual deadlock was experienced as well with an iperf session in the background
and a while loop doing ifconfig + ethtool.

[    5.780350] ================================
[    5.784679] WARNING: inconsistent lock state
[    5.789011] 4.13.0-rc7-02179-g32fae27c725d #70 Not tainted
[    5.794561] --------------------------------
[    5.798890] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
[    5.804971] swapper/0/0 [HC0[0]:SC1[1]:HE0:SE0] takes:
[    5.810175]  (&syncp->seq#2){+.?...}, at: [<c0768a28>] bcm_sysport_tx_reclaim+0x30/0x54
[    5.818327] {SOFTIRQ-ON-W} state was registered at:
[    5.823278]   bcm_sysport_get_stats64+0x17c/0x258
[    5.828053]   dev_get_stats+0x38/0xac
[    5.831776]   rtnl_fill_stats+0x30/0x118
[    5.835761]   rtnl_fill_ifinfo+0x538/0xe24
[    5.839921]   rtmsg_ifinfo_build_skb+0x6c/0xd8
[    5.844430]   rtmsg_ifinfo_event.part.5+0x14/0x44
[    5.849201]   rtmsg_ifinfo+0x20/0x28
[    5.852837]   register_netdevice+0x628/0x6b8
[    5.857171]   register_netdev+0x14/0x24
[    5.861051]   bcm_sysport_probe+0x30c/0x438
[    5.865280]   platform_drv_probe+0x50/0xb0
[    5.869418]   driver_probe_device+0x2e8/0x450
[    5.873817]   __driver_attach+0x104/0x120
[    5.877871]   bus_for_each_dev+0x7c/0xc0
[    5.881834]   bus_add_driver+0x1b0/0x270
[    5.885797]   driver_register+0x78/0xf4
[    5.889675]   do_one_initcall+0x54/0x190
[    5.893646]   kernel_init_freeable+0x144/0x1d0
[    5.898135]   kernel_init+0x8/0x110
[    5.901665]   ret_from_fork+0x14/0x2c
[    5.905363] irq event stamp: 24263
[    5.908804] hardirqs last  enabled at (24262): [<c08eecf0>] net_rx_action+0xc4/0x4e4
[    5.916624] hardirqs last disabled at (24263): [<c0a7da00>] _raw_spin_lock_irqsave+0x1c/0x98
[    5.925143] softirqs last  enabled at (24258): [<c022a7fc>] irq_enter+0x84/0x98
[    5.932524] softirqs last disabled at (24259): [<c022a918>] irq_exit+0x108/0x16c
[    5.939985]
[    5.939985] other info that might help us debug this:
[    5.946576]  Possible unsafe locking scenario:
[    5.946576]
[    5.952556]        CPU0
[    5.955031]        ----
[    5.957506]   lock(&syncp->seq#2);
[    5.960955]   <Interrupt>
[    5.963604]     lock(&syncp->seq#2);
[    5.967227]
[    5.967227]  *** DEADLOCK ***
[    5.967227]
[    5.973222] 1 lock held by swapper/0/0:
[    5.977092]  #0:  (&(&ring->lock)->rlock){..-...}, at: [<c0768a18>] bcm_sysport_tx_reclaim+0x20/0x54

So just remove the u64_stats_update_begin()/end() pair in ndo_get_stats64()
since it does not appear to be useful for anything. No inconsistency was
observed with either ifconfig or ethtool, global TX counts equal the sum of
per-queue TX counts on a 32-bit architecture.

Fixes: 10377ba7 ("net: systemport: Support 64bit statistics")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

When building an allmodconfig kernel with gcc-4.6, we get a rather
odd warning:

drivers/net/vrf.c: In function ‘vrf_ip6_input_dst’:
drivers/net/vrf.c:964:3: error: initialized field with side-effects overwritten [-Werror]
drivers/net/vrf.c:964:3: error: (near initialization for ‘fl6’) [-Werror]

I have no idea what this warning is even trying to say, but it does
seem like a false positive. Reordering the initialization in to match
the structure definition gets rid of the warning, and might also avoid
whatever gcc thinks is wrong here.

Fixes: 9ff74384 ("net: vrf: Handle ipv6 multicast and link-local addresses")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

call to memset to assign 0 value immediately after allocating
memory with kzalloc is unnecesaary as kzalloc allocates the memory
filled with 0 value.

Semantic patch used to resolve this issue:

@@
expression e,e2; constant c;
statement S;
@@

  e = kzalloc(e2, c);
  if(e == NULL) S
- memset(e, 0, e2);
Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com>
Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com>
Acked-by: Sudarsana Kalluru <sudarsana.kalluru@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>