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752402 Commits

Author SHA1 Message Date
David S. Miller 0a8b275d7d Merge branch 'lan78xx-Read-configuration-from-Device-Tree'
Phil Elwell says:

====================
lan78xx: Read configuration from Device Tree

The Microchip LAN78XX family of devices are Ethernet controllers with
a USB interface. Despite being discoverable devices it can be useful to
be able to configure them from Device Tree, particularly in low-cost
applications without an EEPROM or programmed OTP.

This patch set adds support for reading the MAC address and LED modes from
Device Tree.

v4:
- Rename nodes in bindings doc.

v3:
- Move LED setting into PHY driver.

v2:
- Use eth_platform_get_mac_address.
- Support up to 4 LEDs, and move LED mode constants into dt-bindings header.
- Improve bindings document.
- Remove EEE support.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20 11:39:10 -04:00
Phil Elwell 01d26589de dt-bindings: Document the DT bindings for lan78xx
The Microchip LAN78XX family of devices are Ethernet controllers with
a USB interface. Despite being discoverable devices it can be useful to
be able to configure them from Device Tree, particularly in low-cost
applications without an EEPROM or programmed OTP.

Document the supported properties in a bindings file.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20 11:39:09 -04:00
Phil Elwell 1827b06788 lan78xx: Read LED states from Device Tree
Add support for DT property "microchip,led-modes", a vector of zero
to four cells (u32s) in the range 0-15, each of which sets the mode
for one of the LEDs. Some possible values are:

    0=link/activity          1=link1000/activity
    2=link100/activity       3=link10/activity
    4=link100/1000/activity  5=link10/1000/activity
    6=link10/100/activity    14=off    15=on

These values are given symbolic constants in a dt-bindings header.

Also use the presence of the DT property to indicate that the
LEDs should be enabled - necessary in the event that no valid OTP
or EEPROM is available.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20 11:39:09 -04:00
Phil Elwell 760db29bdc lan78xx: Read MAC address from DT if present
There is a standard mechanism for locating and using a MAC address from
the Device Tree. Use this facility in the lan78xx driver to support
applications without programmed EEPROM or OTP. At the same time,
regularise the handling of the different address sources.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20 11:39:09 -04:00
Bert Kenward a83762d979 sfc: set and clear interrupt affinity hints
Use cpumask_local_spread to provide interrupt affinity hints
for each queue. This will spread interrupts across NUMA local
CPUs first, extending to remote nodes if needed.

Signed-off-by: Bert Kenward <bkenward@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20 11:37:19 -04:00
Eric Dumazet 263243d6c2 net/ipv6: Fix ip6_convert_metrics() bug
If ip6_convert_metrics() fails to allocate memory, it should not
overwrite rt->fib6_metrics or we risk a crash later as syzbot found.

BUG: KASAN: null-ptr-deref in atomic_read include/asm-generic/atomic-instrumented.h:21 [inline]
BUG: KASAN: null-ptr-deref in refcount_sub_and_test+0x92/0x330 lib/refcount.c:179
Read of size 4 at addr 0000000000000044 by task syzkaller832429/4487

CPU: 1 PID: 4487 Comm: syzkaller832429 Not tainted 4.16.0+ #6
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1b9/0x294 lib/dump_stack.c:113
 kasan_report_error mm/kasan/report.c:352 [inline]
 kasan_report.cold.7+0x6d/0x2fe mm/kasan/report.c:412
 check_memory_region_inline mm/kasan/kasan.c:260 [inline]
 check_memory_region+0x13e/0x1b0 mm/kasan/kasan.c:267
 kasan_check_read+0x11/0x20 mm/kasan/kasan.c:272
 atomic_read include/asm-generic/atomic-instrumented.h:21 [inline]
 refcount_sub_and_test+0x92/0x330 lib/refcount.c:179
 refcount_dec_and_test+0x1a/0x20 lib/refcount.c:212
 fib6_info_destroy+0x2d0/0x3c0 net/ipv6/ip6_fib.c:206
 fib6_info_release include/net/ip6_fib.h:304 [inline]
 ip6_route_info_create+0x677/0x3240 net/ipv6/route.c:3020
 ip6_route_add+0x23/0xb0 net/ipv6/route.c:3030
 inet6_rtm_newroute+0x142/0x160 net/ipv6/route.c:4406
 rtnetlink_rcv_msg+0x466/0xc10 net/core/rtnetlink.c:4648
 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2448
 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:4666
 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline]
 netlink_unicast+0x58b/0x740 net/netlink/af_netlink.c:1336
 netlink_sendmsg+0x9f0/0xfa0 net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:629 [inline]
 sock_sendmsg+0xd5/0x120 net/socket.c:639
 ___sys_sendmsg+0x805/0x940 net/socket.c:2117
 __sys_sendmsg+0x115/0x270 net/socket.c:2155
 SYSC_sendmsg net/socket.c:2164 [inline]
 SyS_sendmsg+0x29/0x30 net/socket.c:2162
 do_syscall_64+0x29e/0x9d0 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7

Fixes: d4ead6b34b ("net/ipv6: move metrics from dst to rt6_info")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: David Ahern <dsa@cumulusnetworks.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Acked-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20 11:36:15 -04:00
Linus Torvalds 36e584de25 xen: fixes and one header update for 4.17-rc2
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Merge tag 'for-linus-4.17-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen fixes from Juergen Gross:

 - some fixes of kmalloc() flags

 - one fix of the xenbus driver

 - an update of the pv sound driver interface needed for a driver which
   will go through the sound tree

* tag 'for-linus-4.17-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen: xenbus_dev_frontend: Really return response string
  xen/sndif: Sync up with the canonical definition in Xen
  xen: xen-pciback: Replace GFP_ATOMIC with GFP_KERNEL in pcistub_reg_add
  xen: xen-pciback: Replace GFP_ATOMIC with GFP_KERNEL in xen_pcibk_config_quirks_init
  xen: xen-pciback: Replace GFP_ATOMIC with GFP_KERNEL in pcistub_device_alloc
  xen: xen-pciback: Replace GFP_ATOMIC with GFP_KERNEL in pcistub_init_device
  xen: xen-pciback: Replace GFP_ATOMIC with GFP_KERNEL in pcistub_probe
2018-04-20 08:36:04 -07:00
David S. Miller 26d680486a Merge branch 'qed-Use-trust-mode-to-override-forced-MAC'
Shahed Shaikh says:

====================
qed* : Use trust mode to override forced MAC

This patchset adds a support to override forced MAC (MAC set by PF for a VF)
when trust mode is enabled using

First patch adds a real change to use .ndo_set_vf_trust to override forced MAC
and allow user to change VFs from VF interface itself.

Second patch takes care of a corner case, where MAC change from VF won't
take effect when VF interface is down, by introducing a new TLV
(a way to send message from VF to PF) to give a hint to PF to update
its bulletin board.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20 11:26:37 -04:00
Shahed Shaikh 809c45a091 qed* : Add new TLV to request PF to update MAC in bulletin board
There may be a need for VF driver to request PF to explicitly update its
bulletin with a MAC address.
e.g. When user assigns a MAC address to VF while VF is still down,
and PF's bulletin board contains different MAC address, in this case,
when VF's interface is brought up, it gets loaded with MAC address from
bulletin board which is not desirable.

To handle this corner case, we need a new TLV to request PF to update
its bulletin board with suggested MAC.

This request will be honored only for trusted VFs.

Signed-off-by: Shahed Shaikh <shahed.shaikh@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20 11:26:37 -04:00
Shahed Shaikh 7425d8220f qed* : use trust mode to allow VF to override forced MAC
As per existing behavior, when PF sets a MAC address for a VF
(also called as forced MAC), VF is not allowed to change its
MAC address afterwards.
This puts the limitation on few use cases such as bonding of VFs,
where bonding driver asks VF to change its MAC address.

This patch uses a VF trust mode to allow VF to change its MAC address
in spite PF has set a forced MAC for that VF.

Signed-off-by: Shahed Shaikh <shahed.shaikh@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20 11:26:36 -04:00
Linus Torvalds 854da23875 MIPS fixes for 4.17-rc2
Some MIPS fixes for 4.17:
 
  - io: Add barriers to read*() & write*()
 
  - dts: Fix boston PCI bus DTC warnings (4.17)
 
  - memset: Several corner case fixes (one 3.10, others longer)
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Merge tag 'mips_fixes_4.17_1' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/mips

Pull MIPS fixes from James Hogan:

 - io: Add barriers to read*() & write*()

 - dts: Fix boston PCI bus DTC warnings (4.17)

 - memset: Several corner case fixes (one 3.10, others longer)

* tag 'mips_fixes_4.17_1' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/mips:
  MIPS: uaccess: Add micromips clobbers to bzero invocation
  MIPS: memset.S: Fix clobber of v1 in last_fixup
  MIPS: memset.S: Fix return of __clear_user from Lpartial_fixup
  MIPS: memset.S: EVA & fault support for small_memset
  MIPS: dts: Boston: Fix PCI bus dtc warnings:
  MIPS: io: Add barrier after register read in readX()
  MIPS: io: Prevent compiler reordering writeX()
2018-04-20 08:25:31 -07:00
Linus Torvalds d08de37b8c powerpc fixes for 4.17 #3
Fix an off-by-one bug in our alternative asm patching which leads to incorrectly
 patched code. This bug lay dormant for nearly 10 years but we finally hit it
 due to a recent change.
 
 Fix lockups when running KVM guests on Power8 due to a missing check when a
 thread that's running KVM comes out of idle.
 
 Fix an out-of-spec behaviour in the XIVE code (P9 interrupt controller).
 
 Fix EEH handling of bridge MMIO windows.
 
 Prevent crashes in our RFI fallback flush handler if firmware didn't tell us the
 size of the L1 cache (only seen on simulators).
 
 Thanks to:
   Benjamin Herrenschmidt, Madhavan Srinivasan, Michael Neuling.
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Merge tag 'powerpc-4.17-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:

 - Fix an off-by-one bug in our alternative asm patching which leads to
   incorrectly patched code. This bug lay dormant for nearly 10 years
   but we finally hit it due to a recent change.

 - Fix lockups when running KVM guests on Power8 due to a missing check
   when a thread that's running KVM comes out of idle.

 - Fix an out-of-spec behaviour in the XIVE code (P9 interrupt
   controller).

 - Fix EEH handling of bridge MMIO windows.

 - Prevent crashes in our RFI fallback flush handler if firmware didn't
   tell us the size of the L1 cache (only seen on simulators).

Thanks to: Benjamin Herrenschmidt, Madhavan Srinivasan, Michael Neuling.

* tag 'powerpc-4.17-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/kvm: Fix lockups when running KVM guests on Power8
  powerpc/eeh: Fix enabling bridge MMIO windows
  powerpc/xive: Fix trying to "push" an already active pool VP
  powerpc/64s: Default l1d_size to 64K in RFI fallback flush
  powerpc/lib: Fix off-by-one in alternate feature patching
2018-04-20 08:23:30 -07:00
David S. Miller 2ed021255b Merge branch 'geneve-mtu'
Alexey Kodanev says:

====================
geneve: verify user specified MTU or adjust with a lower device

The first two patches don't introduce any functional changes and
contain minor cleanups for code readability.

The last one adds a new function geneve_link_config() similar to the
other tunnels. The function will be used on a new link creation or
when 'remote' parameter is changed. It adjusts a user specified MTU
or, if it finds a lower device, tunes the tunnel MTU using it.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20 11:20:06 -04:00
Alexey Kodanev c40e89fd35 geneve: configure MTU based on a lower device
Currently, on a new link creation or when 'remote' address parameter
is updated, an MTU is not changed and always equals 1500. When a lower
device has a larger MTU, it might not be efficient, e.g. for UDP, and
requires the manual MTU adjustments to match the MTU of the lower
device.

This patch tries to automate this process, finds a lower device using
the 'remote' address parameter, then uses its MTU to tune GENEVE's MTU:
  * on a new link creation
  * when 'remote' parameter is changed

Also with this patch, the MTU from a user, on a new link creation, is
passed to geneve_change_mtu() where it is verified, and MTU adjustments
with a lower device is skipped in that case. Prior that change, it was
possible to set the invalid MTU values on a new link creation.

Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20 11:20:05 -04:00
Alexey Kodanev 321acc1c68 geneve: check MTU for a minimum in geneve_change_mtu()
geneve_change_mtu() will be used not only as ndo_change_mtu() callback,
but also to verify a user specified MTU on a new link creation in the
next patch.

Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20 11:20:05 -04:00
Alexey Kodanev 5edbea6987 geneve: cleanup hard coded value for Ethernet header length
Use ETH_HLEN instead and introduce two new macros: GENEVE_IPV4_HLEN
and GENEVE_IPV6_HLEN that include Ethernet header length, corresponded
IP header length and GENEVE_BASE_HLEN.

Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20 11:20:05 -04:00
Alexey Kodanev 4c52a889ab geneve: remove white-space before '#if IS_ENABLED(CONFIG_IPV6)'
Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20 11:20:05 -04:00
George Wilkie f1d22a1e05 team: account for oper state
Account for operational state when determining port linkup state,
as per Documentation/networking/operstates.txt.

Signed-off-by: George Wilkie <gwilkie@vyatta.att-mail.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20 11:05:19 -04:00
David S. Miller ddf967bb6b Merge branch 'tipc-Confgiuration-of-MTU-for-media-UDP'
GhantaKrishnamurthy MohanKrishna says:

====================
tipc: Confgiuration of MTU for media UDP

Systematic measurements have shown that an emulated MTU of 14k for
UDP bearers is the optimal value for maximal throughput. Accordingly,
the default MTU of UDP bearers is changed to 14k.

We also provide users with a fallback option from this value,
by providing support to configure MTU for UDP bearers. The following
options are introduced which are symmetrical to the design of
confguring link tolerance.

- Configure media with new MTU value, which will take effect on
links going up after the moment it was configured. Alternatively,
the bearer has to be disabled and re-enabled, for existing links to
reflect the configured value.

- Configure bearer with new MTU value, which take effect on
running links dynamically.

Please note:
- User has to change MTU at both endpoints, otherwise the link
will fall back to smallest MTU after a reset.
- Failover from a link with higher MTU to a link with lower MTU
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20 11:04:06 -04:00
GhantaKrishnamurthy MohanKrishna 682cd3cf94 tipc: confgiure and apply UDP bearer MTU on running links
Currently, we have option to configure MTU of UDP media. The configured
MTU takes effect on the links going up after that moment. I.e, a user
has to reset bearer to have new value applied across its links. This is
confusing and disturbing on a running cluster.

We now introduce the functionality to change the default UDP bearer MTU
in struct tipc_bearer. Additionally, the links are updated dynamically,
without any need for a reset, when bearer value is changed. We leverage
the existing per-link functionality and the design being symetrical to
the confguration of link tolerance.

Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: GhantaKrishnamurthy MohanKrishna <mohan.krishna.ghanta.krishnamurthy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20 11:04:05 -04:00
GhantaKrishnamurthy MohanKrishna 901271e040 tipc: implement configuration of UDP media MTU
In previous commit, we changed the default emulated MTU for UDP bearers
to 14k.

This commit adds the functionality to set/change the default value
by configuring new MTU for UDP media. UDP bearer(s) have to be disabled
and enabled back for the new MTU to take effect.

Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: GhantaKrishnamurthy MohanKrishna <mohan.krishna.ghanta.krishnamurthy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20 11:04:05 -04:00
GhantaKrishnamurthy MohanKrishna a4dfa72d0a tipc: set default MTU for UDP media
Currently, all bearers are configured with MTU value same as the
underlying L2 device. However, in case of bearers with media type
UDP, higher throughput is possible with a fixed and higher emulated
MTU value than adapting to the underlying L2 MTU.

In this commit, we introduce a parameter mtu in struct tipc_media
and a default value is set for UDP. A default value of 14k
was determined by experimentation and found to have a higher throughput
than 16k. MTU for UDP bearers are assigned the above set value of
media MTU.

Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: GhantaKrishnamurthy MohanKrishna <mohan.krishna.ghanta.krishnamurthy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20 11:04:05 -04:00
Linus Torvalds c2d94c5214 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes and kexec-file-load from Martin Schwidefsky:
 "After the common code kexec patches went in via Andrew we can now push
  the architecture parts to implement the kexec-file-load system call.

  Plus a few more bug fixes and cleanups, this includes an update to the
  default configurations"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/signal: cleanup uapi struct sigaction
  s390: rename default_defconfig to debug_defconfig
  s390: remove gcov defconfig
  s390: update defconfig
  s390: add support for IBM z14 Model ZR1
  s390: remove couple of duplicate includes
  s390/boot: remove unused COMPILE_VERSION and ccflags-y
  s390/nospec: include cpu.h
  s390/decompressor: Ignore file vmlinux.bin.full
  s390/kexec_file: add generated files to .gitignore
  s390/Kconfig: Move kexec config options to "Processor type and features"
  s390/kexec_file: Add ELF loader
  s390/kexec_file: Add crash support to image loader
  s390/kexec_file: Add image loader
  s390/kexec_file: Add kexec_file_load system call
  s390/kexec_file: Add purgatory
  s390/kexec_file: Prepare setup.h for kexec_file_load
  s390/smsgiucv: disable SMSG on module unload
  s390/sclp: avoid potential usage of uninitialized value
2018-04-20 08:01:38 -07:00
Intiyaz Basha cea395ac86 liquidio: Added ndo_get_vf_stats support
Added the ndo to gather VF statistics through the PF.

Collect VF statistics via mailbox from VF.

Signed-off-by: Intiyaz Basha <intiyaz.basha@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20 10:53:46 -04:00
David S. Miller eaa008d3b3 Merge branch 'ave-fix-the-activation-issues-for-some-UniPhier-SoCs'
Kunihiko Hayashi says:

====================
ave: fix the activation issues for some UniPhier SoCs

This add the following stuffs to fix the activation issues and satisfy
requirements for AVE ethernet driver implemented on some UniPhier SoCs.

- Add support for additional necessary clocks and resets, because the kernel
  is stalled on Pro4 due to lack of them.

- Check whether the SoC supports the specified phy-mode

- Add DT property support indicating system controller that has the feature
  for configurating phy-mode including built-in phy on LD11.

v1: https://www.spinics.net/lists/netdev/msg494904.html

Changes since v1:
- Add 'Reviewed-by' lines
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20 10:49:41 -04:00
Kunihiko Hayashi 57878f2f46 net: ethernet: ave: add support for phy-mode setting of system controller
This patch adds support for specifying system controller that configures
phy-mode setting.

According to the DT property "phy-mode", it's necessary to configure the
controller, which is used to choose the settings of the MAC suitable,
for example, mdio pin connections, internal clocks, and so on.

Supported phy-modes are SoC-dependent. The driver allows phy-mode to set
"internal" if the SoC has a built-in PHY, and {"mii", "rmii", "rgmii"}
if the SoC supports each mode. So we have to check whether the phy-mode
is valid or not.

This adds the following features for each SoC:
- check whether the SoC supports the specified phy-mode
- configure the controller accroding to phy-mode

The DT property accepts one argument to distinguish them for multiple MAC
instances.

ethernet@65000000 {
	...
	socionext,syscon-phy-mode = <&soc_glue 0>;
};

ethernet@65200000 {
	...
	socionext,syscon-phy-mode = <&soc_glue 1>;
};

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20 10:49:41 -04:00
Kunihiko Hayashi 74734306c2 dt-bindings: net: ave: add syscon-phy-mode property to configure phy-mode setting
Add "socionext,syscon-phy-mode" property to specify system controller that
configures the settings about phy-mode.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20 10:49:40 -04:00
Kunihiko Hayashi 6b9227d666 net: ethernet: ave: add multiple clocks and resets support as required property
When the link is becoming up for Pro4 SoC, the kernel is stalled
due to some missing clocks and resets.

The AVE block for Pro4 is connected to the GIO bus in the SoC.
Without its clock/reset, the access to the AVE register makes the
system stall.

In the same way, another MAC clock for Giga-bit Connection and
the PHY clock are also required for Pro4 to activate the Giga-bit feature
and to recognize the PHY.

To satisfy these requirements, this patch adds support for multiple clocks
and resets, and adds the clock-names and reset-names to the binding because
we need to distinguish clock/reset for the AVE main block and the others.

Also, make the resets a required property. Currently, "reset is
optional" relies on that the bootloader or firmware has deasserted
the reset before booting the kernel.  Drivers should work without
such expectation.

Fixes: 4c270b55a5 ("net: ethernet: socionext: add AVE ethernet driver")
Suggested-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20 10:49:40 -04:00
Andrew Lunn 0263ea5cdd net: phy: mdio-boardinfo: Allow recursive mdiobus_register()
mdiobus_register will search for any mdiobus board info registered for
the bus being registered. If found, it will probe devices on the bus.
That device, if for example it is an ethernet switch, may then try to
register an mdio bus. Thus we need to allow recursive calls to
mdiobus_register.

Holding the mdio_board_lock will cause a deadlock during this
recursion. Release the lock and use list_for_each_entry_safe.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-20 10:33:26 -04:00
Björn Töpel 878a4d3281 libbpf: fixed build error for samples/bpf/
Commit 8a138aed4a ("bpf: btf: Add BTF support to libbpf") did not
include stdbool.h, so GCC complained when building samples/bpf/.

In file included from /home/btopel/src/ext/linux/samples/bpf/libbpf.h:6:0,
                 from /home/btopel/src/ext/linux/samples/bpf/test_lru_dist.c:24:
/home/btopel/src/ext/linux/tools/lib/bpf/bpf.h:105:4: error: unknown type name ‘bool’; did you mean ‘_Bool’?
    bool do_log);
    ^~~~
    _Bool

Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-04-20 10:12:19 +02:00
Al Viro 16a34adb93 Don't leak MNT_INTERNAL away from internal mounts
We want it only for the stuff created by SB_KERNMOUNT mounts, *not* for
their copies.  As it is, creating a deep stack of bindings of /proc/*/ns/*
somewhere in a new namespace and exiting yields a stack overflow.

Cc: stable@kernel.org
Reported-by: Alexander Aring <aring@mojatatu.com>
Bisected-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Tested-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Tested-by: Alexander Aring <aring@mojatatu.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2018-04-19 23:52:15 -04:00
Ursula Braun 1255fcb2a6 net/smc: fix shutdown in state SMC_LISTEN
Calling shutdown with SHUT_RD and SHUT_RDWR for a listening SMC socket
crashes, because
   commit 127f497058 ("net/smc: release clcsock from tcp_listen_worker")
releases the internal clcsock in smc_close_active() and sets smc->clcsock
to NULL.
For SHUT_RD the smc_close_active() call is removed.
For SHUT_RDWR the kernel_sock_shutdown() call is omitted, since the
clcsock is already released.

Fixes: 127f497058 ("net/smc: release clcsock from tcp_listen_worker")
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reported-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-19 16:38:39 -04:00
Vasundhara Volam a60faa60da bnxt_en: Fix memory fault in bnxt_ethtool_init()
In some firmware images, the length of BNX_DIR_TYPE_PKG_LOG nvram type
could be greater than the fixed buffer length of 4096 bytes allocated by
the driver.  This was causing HWRM_NVM_READ to copy more data to the buffer
than the allocated size, causing general protection fault.

Fix the issue by allocating the exact buffer length returned by
HWRM_NVM_FIND_DIR_ENTRY, instead of 4096.  Move the kzalloc() call
into the bnxt_get_pkgver() function.

Fixes: 3ebf6f0a09 ("bnxt_en: Add installed-package firmware version reporting via Ethtool GDRVINFO")
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-19 16:35:09 -04:00
David S. Miller 0df8bb01cb Merge branch 'virtio-ctrl-buffer-fixes'
Michael S. Tsirkin says:

====================
virtio: ctrl buffer fixes

Here are a couple of fixes related to the virtio control buffer.
Lightly tested on x86 only.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-19 16:33:21 -04:00
Michael S. Tsirkin f4ee703ace virtio_net: sparse annotation fix
offloads is a buffer in virtio format, should use
the __virtio64 tag.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-19 16:33:20 -04:00
Michael S. Tsirkin d7fad4c840 virtio_net: fix adding vids on big-endian
Programming vids (adding or removing them) still passes
guest-endian values in the DMA buffer. That's wrong
if guest is big-endian and when virtio 1 is enabled.

Note: this is on top of a previous patch:
	virtio_net: split out ctrl buffer

Fixes: 9465a7a6f ("virtio_net: enable v1.0 support")
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-19 16:33:20 -04:00
Michael S. Tsirkin 12e5716938 virtio_net: split out ctrl buffer
When sending control commands, virtio net sets up several buffers for
DMA. The buffers are all part of the net device which means it's
actually allocated by kvmalloc so it's in theory (on extreme memory
pressure) possible to get a vmalloc'ed buffer which on some platforms
means we can't DMA there.

Fix up by moving the DMA buffers into a separate structure.

Reported-by: Mikulas Patocka <mpatocka@redhat.com>
Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-19 16:33:20 -04:00
dann frazier f4ea89110d net: hns: Avoid action name truncation
When longer interface names are used, the action names exposed in
/proc/interrupts and /proc/irq/* maybe truncated. For example, when
using the predictable name algorithm in systemd on a HiSilicon D05,
I see:

  ubuntu@d05-3:~$  grep enahisic2i0-tx /proc/interrupts | sed 's/.* //'
  enahisic2i0-tx0
  enahisic2i0-tx1
  [...]
  enahisic2i0-tx8
  enahisic2i0-tx9
  enahisic2i0-tx1
  enahisic2i0-tx1
  enahisic2i0-tx1
  enahisic2i0-tx1
  enahisic2i0-tx1
  enahisic2i0-tx1

Increase the max ring name length to allow for an interface name
of IFNAMSIZE. After this change, I now see:

  $ grep enahisic2i0-tx /proc/interrupts | sed 's/.* //'
  enahisic2i0-tx0
  enahisic2i0-tx1
  enahisic2i0-tx2
  [...]
  enahisic2i0-tx8
  enahisic2i0-tx9
  enahisic2i0-tx10
  enahisic2i0-tx11
  enahisic2i0-tx12
  enahisic2i0-tx13
  enahisic2i0-tx14
  enahisic2i0-tx15

Signed-off-by: dann frazier <dann.frazier@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-19 16:30:26 -04:00
David S. Miller bda73d4ec9 Merge branch 'Amiga-xsurf100'
Michael Schmitz says:

====================
New network driver for Amiga X-Surf 100 (m68k)

[This is a resend of my v3 series which was based on the wrong version and
tree. Only substantial change is to Asix AX99796B PHY driver.]

This patch series adds support for the Individual Computers X-Surf 100
network card for m68k Amiga, a network adapter based on the AX88796 chip set.

The driver was originally written for kernel version 3.19 by Michael Karcher
(see CC:), and adapted to 4.16+ for submission to netdev by me. Questions
regarding motivation for some of the changes are probably best directed at
Michael Karcher.

The driver has been tested by Adrian <glaubitz@physik.fu-berlin.de> who will
send his Tested-by tag separately.

A few changes to the ax88796 driver were required:
- to read the MAC address, some setup of the ax99796 chip must be done,
- attach to the MII bus only on device open to allow module unloading,
- allow to supersede ax_block_input/ax_block_output by card-specific
  optimized code,
- use an optional interrupt status callback to allow easier sharing of the
  card interrupt,
- set IRQF_SHARED if platform IRQ resource is marked shareable

The Asix Electronix PHY used on the X-Surf 100 is buggy, and causes the
software reset to hang if the previous command sent to the PHY was also
a soft reset. This bug requires addition of a PHY driver for Asix PHYs
to provide a fixed .soft_reset function, included in this series.

Some additional cleanup:
- do not attempt to free IRQ in ax_remove (complements 82533ad9a1),
- clear platform drvdata on probe fail and module remove.

Changes since v1:

Raised in review by Andrew Lunn:
- move MII code around to avoid need for forward declaration,
- combine patches 2 and 7 to add cleanup in error path

Changes since v2:

- corrected authorship attribution to Michael Karcher

Suggested by Geert Uytterhoeven:
- use ei_local->reset_8390() instead of duplicating ax_reset_8390(),
- use %pR to format struct resource pointers,
- assign pdev and xs100 pointers in declaration,
- don't split error messages,
- change Kconfig logic to only require XSURF100 set on Amiga

Suggested by Andrew Lunn:
- add COMPILE_TEST to ax88796 Kconfig options,
- use new Asix PHY driver for X-Surf 100

Suggested by Andrew Lunn/Finn Thain:
- declare struct sk_buff in ax88796.h,
- correct whitespace error in ax88796.h

Changes since v3:

- various checkpatch cleanup

Andrew Lunn:
- don't duplicate genphy_soft_reset in Asix PHY driver, just call
  genphy_soft_reset after writing zero to control register
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-19 16:11:12 -04:00
Michael Karcher 861928f4e6 net-next: New ax88796 platform driver for Amiga X-Surf 100 Zorro board (m68k)
Add platform device driver to populate the ax88796 platform data from
information provided by the XSurf100 zorro device driver. The ax88796
module will be loaded through this module's probe function.

Signed-off-by: Michael Karcher <kernel@mkarcher.dialup.fu-berlin.de>
Signed-off-by: Michael Schmitz <schmitzmic@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-19 16:11:11 -04:00
Michael Schmitz 453da98878 net-next: ax88796: release platform device drvdata on probe error and module remove
The net device struct pointer is stored as platform device drvdata on
module probe - clear the drvdata entry on probe fail there, as well as
when unloading the module.

Signed-off-by: Michael Schmitz <schmitzmic@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-19 16:11:11 -04:00
Michael Karcher caaf45a6ba net-next: ax88796: set IRQF_SHARED flag when IRQ resource is marked as shareable
On the Amiga X-Surf100, the network card interrupt is shared with many
other interrupt sources, so requires the IRQF_SHARED flag to register.

Signed-off-by: Michael Karcher <kernel@mkarcher.dialup.fu-berlin.de>
Signed-off-by: Michael Schmitz <schmitzmic@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-19 16:11:11 -04:00
Michael Karcher cec4c1c54a net-next: ax88796: add interrupt status callback to platform data
To be able to tell the ax88796 driver whether it is sensible to enter
the 8390 interrupt handler, an "is this interrupt caused by the 88796"
callback has been added to the ax_plat_data structure (with NULL being
compatible to the previous behaviour).

Signed-off-by: Michael Karcher <kernel@mkarcher.dialup.fu-berlin.de>
Signed-off-by: Michael Schmitz <schmitzmic@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-19 16:11:11 -04:00
Michael Karcher 27cced2019 net-next: ax88796: Add block_input/output hooks to ax_plat_data
Add platform specific hooks for block transfer reads/writes of packet
buffer data, superseding the default provided ax_block_input/output.
Currently used for m68k Amiga XSurf100.

Signed-off-by: Michael Karcher <kernel@mkarcher.dialup.fu-berlin.de>
Signed-off-by: Michael Schmitz <schmitzmic@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-19 16:11:10 -04:00
Michael Karcher 9144c3795c net-next: ax88796: Do not free IRQ in ax_remove() (already freed in ax_close()).
This complements the fix in 82533ad9a1 ("net: ethernet: ax88796:
don't call free_irq without request_irq first") that removed the
free_irq call in the error path of probe, to also not call free_irq
when remove is called to revert the effects of probe.

Fixes: 82533ad9a1 (net: ethernet: ax88796: don't call free_irq without request_irq first)
Signed-off-by: Michael Karcher <kernel@mkarcher.dialup.fu-berlin.de>
Signed-off-by: Michael Schmitz <schmitzmic@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-19 16:11:10 -04:00
Michael Karcher fd5f375c16 net-next: ax88796: Attach MII bus only when open
Call ax_mii_init in ax_open(), and unregister/remove mdiobus resources
in ax_close().

This is needed to be able to unload the module, as the module is busy
while the MII bus is attached.

Signed-off-by: Michael Karcher <kernel@mkarcher.dialup.fu-berlin.de>
Signed-off-by: Michael Schmitz <schmitzmic@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-19 16:11:10 -04:00
Michael Karcher 7a0907bd39 net-next: ax88796: Fix MAC address reading
To read the MAC address from the (virtual) SAprom, the remote DMA
unit needs to be set up like for every other process access to card-local
memory.

Signed-off-by: Michael Karcher <kernel@mkarcher.dialup.fu-berlin.de>
Signed-off-by: Michael Schmitz <schmitzmic@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-19 16:11:10 -04:00
Michael Schmitz 31dd83b966 net-next: phy: new Asix Electronics PHY driver
The Asix Electronics PHY found on the X-Surf 100 Amiga Zorro network
card by Individual Computers is buggy, and needs the reset bit toggled
as workaround to make a PHY soft reset succeed.

Add workaround driver just for this special case.

Suggested in xsurf100 patch series review by Andrew Lunn <andrew@lunn.ch>

Signed-off-by: Michael Schmitz <schmitzmic@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-19 16:11:10 -04:00
David S. Miller 32e43779fc Merge branch 'Modernize-mdio-gpio'
Andrew Lunn says:

====================
Modernize mdio-gpio

This patchset is inspired by a previous version by Linus Walleij

It reworks the mdio-gpio code to make use of gpio descriptors instead
of gpio numbers. However compared to the previous version, it retains
support for platform devices. It does however remove the platform_data
header file. The needed GPIOs are now passed by making use of a gpiod
lookup table. e.g:

static struct gpiod_lookup_table zii_scu_mdio_gpiod_table = {
	.dev_id = "mdio-gpio.0",
	.table = {
		GPIO_LOOKUP_IDX("gpio_ich", 17, NULL, MDIO_GPIO_MDC,
				GPIO_ACTIVE_HIGH),
		GPIO_LOOKUP_IDX("gpio_ich", 2, NULL, MDIO_GPIO_MDIO,
				GPIO_ACTIVE_HIGH),
		GPIO_LOOKUP_IDX("gpio_ich", 21, NULL, MDIO_GPIO_MDO,
				GPIO_ACTIVE_LOW),
	},
};
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-19 15:59:12 -04:00
Andrew Lunn 0207dd1173 net: phy: mdio-gpio: Remove redundant platform data header
The platform data header file is now unused. Remove it, but add
an extra include which it brought in.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-19 15:59:11 -04:00