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43601 commits

Author SHA1 Message Date
Andrey Ignatov
8c061865f5 bpf: Document bpf_inspect drgn tool
It's a follow-up for discussion in [1].

drgn tool bpf_inspect.py was merged to drgn repo in [2]. Document it
in kernel tree to make BPF developers aware that the tool exists and
can help with getting BPF state unavailable via UAPI.

For now it's just one tool but the doc is written in a way that allows
to cover more tools in the future if needed.

Please refer to the doc itself for more details.

The patch was tested by `make htmldocs` and sanity-checking that
resulting html looks good.

v2 -> v3:
  - two sections: "Description" and "Getting started" (Daniel);
  - add examples in "Getting started" section (Daniel);
  - add "Customization" section to show how tool can be customized.

v1 -> v2:
  - better "BPF drgn tools" section (Alexei)

  [1] https://lore.kernel.org/bpf/20200228201514.GB51456@rdna-mbp/T/#mefed65e8a98116bd5d07d09a570a3eac46724951
  [2] https://github.com/osandov/drgn/pull/49

Signed-off-by: Andrey Ignatov <rdna@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200324185135.1431038-1-rdna@fb.com
2020-03-26 00:08:36 +01:00
David S. Miller
44ef976ab3 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Daniel Borkmann says:

====================
pull-request: bpf-next 2020-03-13

The following pull-request contains BPF updates for your *net-next* tree.

We've added 86 non-merge commits during the last 12 day(s) which contain
a total of 107 files changed, 5771 insertions(+), 1700 deletions(-).

The main changes are:

1) Add modify_return attach type which allows to attach to a function via
   BPF trampoline and is run after the fentry and before the fexit programs
   and can pass a return code to the original caller, from KP Singh.

2) Generalize BPF's kallsyms handling and add BPF trampoline and dispatcher
   objects to be visible in /proc/kallsyms so they can be annotated in
   stack traces, from Jiri Olsa.

3) Extend BPF sockmap to allow for UDP next to existing TCP support in order
   in order to enable this for BPF based socket dispatch, from Lorenz Bauer.

4) Introduce a new bpftool 'prog profile' command which attaches to existing
   BPF programs via fentry and fexit hooks and reads out hardware counters
   during that period, from Song Liu. Example usage:

   bpftool prog profile id 337 duration 3 cycles instructions llc_misses

        4228 run_cnt
     3403698 cycles                                              (84.08%)
     3525294 instructions   #  1.04 insn per cycle               (84.05%)
          13 llc_misses     #  3.69 LLC misses per million isns  (83.50%)

5) Batch of improvements to libbpf, bpftool and BPF selftests. Also addition
   of a new bpf_link abstraction to keep in particular BPF tracing programs
   attached even when the applicaion owning them exits, from Andrii Nakryiko.

6) New bpf_get_current_pid_tgid() helper for tracing to perform PID filtering
   and which returns the PID as seen by the init namespace, from Carlos Neira.

7) Refactor of RISC-V JIT code to move out common pieces and addition of a
   new RV32G BPF JIT compiler, from Luke Nelson.

8) Add gso_size context member to __sk_buff in order to be able to know whether
   a given skb is GSO or not, from Willem de Bruijn.

9) Add a new bpf_xdp_output() helper which reuses XDP's existing perf RB output
   implementation but can be called from tracepoint programs, from Eelco Chaudron.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-13 20:52:03 -07:00
David S. Miller
1d34357931 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Minor overlapping changes, nothing serious.

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-12 22:34:48 -07:00
Linus Torvalds
1b51f69461 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from David Miller:
 "It looks like a decent sized set of fixes, but a lot of these are one
  liner off-by-one and similar type changes:

   1) Fix netlink header pointer to calcular bad attribute offset
      reported to user. From Pablo Neira Ayuso.

   2) Don't double clear PHY interrupts when ->did_interrupt is set,
      from Heiner Kallweit.

   3) Add missing validation of various (devlink, nl802154, fib, etc.)
      attributes, from Jakub Kicinski.

   4) Missing *pos increments in various netfilter seq_next ops, from
      Vasily Averin.

   5) Missing break in of_mdiobus_register() loop, from Dajun Jin.

   6) Don't double bump tx_dropped in veth driver, from Jiang Lidong.

   7) Work around FMAN erratum A050385, from Madalin Bucur.

   8) Make sure ARP header is pulled early enough in bonding driver,
      from Eric Dumazet.

   9) Do a cond_resched() during multicast processing of ipvlan and
      macvlan, from Mahesh Bandewar.

  10) Don't attach cgroups to unrelated sockets when in interrupt
      context, from Shakeel Butt.

  11) Fix tpacket ring state management when encountering unknown GSO
      types. From Willem de Bruijn.

  12) Fix MDIO bus PHY resume by checking mdio_bus_phy_may_suspend()
      only in the suspend context. From Heiner Kallweit"

* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (112 commits)
  net: systemport: fix index check to avoid an array out of bounds access
  tc-testing: add ETS scheduler to tdc build configuration
  net: phy: fix MDIO bus PM PHY resuming
  net: hns3: clear port base VLAN when unload PF
  net: hns3: fix RMW issue for VLAN filter switch
  net: hns3: fix VF VLAN table entries inconsistent issue
  net: hns3: fix "tc qdisc del" failed issue
  taprio: Fix sending packets without dequeueing them
  net: mvmdio: avoid error message for optional IRQ
  net: dsa: mv88e6xxx: Add missing mask of ATU occupancy register
  net: memcg: fix lockdep splat in inet_csk_accept()
  s390/qeth: implement smarter resizing of the RX buffer pool
  s390/qeth: refactor buffer pool code
  s390/qeth: use page pointers to manage RX buffer pool
  seg6: fix SRv6 L2 tunnels to use IANA-assigned protocol number
  net: dsa: Don't instantiate phylink for CPU/DSA ports unless needed
  net/packet: tpacket_rcv: do not increment ring index on drop
  sxgbe: Fix off by one in samsung driver strncpy size arg
  net: caif: Add lockdep expression to RCU traversal primitive
  MAINTAINERS: remove Sathya Perla as Emulex NIC maintainer
  ...
2020-03-12 16:19:19 -07:00
Linus Torvalds
807f030b44 Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs fixes from Al Viro:
 "A couple of fixes for old crap in ->atomic_open() instances"

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  cifs_atomic_open(): fix double-put on late allocation failure
  gfs2_atomic_open(): fix O_EXCL|O_CREAT handling on cold dcache
2020-03-12 15:51:26 -07:00
Michal Kubecek
546379b9a0 ethtool: add CHANNELS_NTF notification
Send ETHTOOL_MSG_CHANNELS_NTF notification whenever channel counts of
a network device are modified using ETHTOOL_MSG_CHANNELS_SET netlink
message or ETHTOOL_SCHANNELS ioctl request.

Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-12 15:32:33 -07:00
Michal Kubecek
e19c591eaf ethtool: set device channel counts with CHANNELS_SET request
Implement CHANNELS_SET netlink request to set channel counts of a network
device. These are traditionally set with ETHTOOL_SCHANNELS ioctl request.

Like the ioctl implementation, the generic ethtool code checks if supplied
values do not exceed driver defined limits; if they do, first offending
attribute is reported using extack. Checks preventing removing channels
used for RX indirection table or zerocopy AF_XDP socket are also
implemented.

Move ethtool_get_max_rxfh_channel() helper into common.c so that it can be
used by both ioctl and netlink code.

v2:
  - fix netdev reference leak in error path (found by Jakub Kicinsky)

Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-12 15:32:33 -07:00
Michal Kubecek
0c84979c95 ethtool: provide channel counts with CHANNELS_GET request
Implement CHANNELS_GET request to get channel counts of a network device.
These are traditionally available via ETHTOOL_GCHANNELS ioctl request.

Omit attributes for channel types which are not supported by driver or
device (zero reported for maximum).

v2: (all suggested by Jakub Kicinski)
  - minor cleanup in channels_prepare_data()
  - more descriptive channels_reply_size()
  - omit attributes with zero max count

Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-12 15:32:33 -07:00
Michal Kubecek
bc9d1c995e ethtool: add RINGS_NTF notification
Send ETHTOOL_MSG_RINGS_NTF notification whenever ring sizes of a network
device are modified using ETHTOOL_MSG_RINGS_SET netlink message or
ETHTOOL_SRINGPARAM ioctl request.

Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-12 15:32:33 -07:00
Michal Kubecek
2fc2929e80 ethtool: set device ring sizes with RINGS_SET request
Implement RINGS_SET netlink request to set ring sizes of a network device.
These are traditionally set with ETHTOOL_SRINGPARAM ioctl request.

Like the ioctl implementation, the generic ethtool code checks if supplied
values do not exceed driver defined limits; if they do, first offending
attribute is reported using extack.

v2:
  - fix netdev reference leak in error path (found by Jakub Kicinsky)

Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-12 15:32:33 -07:00
Michal Kubecek
e4a1717b67 ethtool: provide ring sizes with RINGS_GET request
Implement RINGS_GET request to get ring sizes of a network device. These
are traditionally available via ETHTOOL_GRINGPARAM ioctl request.

Omit attributes for ring types which are not supported by driver or device
(zero reported for maximum).

v2: (all suggested by Jakub Kicinski)
  - minor cleanup in rings_prepare_data()
  - more descriptive rings_reply_size()
  - omit attributes with zero max size

Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-12 15:32:33 -07:00
Michal Kubecek
f265d79959 ethtool: set device private flags with PRIVFLAGS_SET request
Implement PRIVFLAGS_SET netlink request to set private flags of a network
device. These are traditionally set with ETHTOOL_SPFLAGS ioctl request.

Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-12 15:32:33 -07:00
Michal Kubecek
e16c3386fc ethtool: provide private flags with PRIVFLAGS_GET request
Implement PRIVFLAGS_GET request to get private flags for a network device.
These are traditionally available via ETHTOOL_GPFLAGS ioctl request.

Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-12 15:32:33 -07:00
Michal Kubecek
9c6451ef48 ethtool: add FEATURES_NTF notification
Send ETHTOOL_MSG_FEATURES_NTF notification whenever network device features
are modified using ETHTOOL_MSG_FEATURES_SET netlink message, ethtool ioctl
request or any other way resulting in call to netdev_update_features() or
netdev_change_features()

Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-12 15:32:33 -07:00
Michal Kubecek
0980bfcd69 ethtool: set netdev features with FEATURES_SET request
Implement FEATURES_SET netlink request to set network device features.
These are traditionally set using ETHTOOL_SFEATURES ioctl request.

Actual change is subject to netdev_change_features() sanity checks so that
it can differ from what was requested. Unlike with most other SET requests,
in addition to error code and optional extack, kernel provides an optional
reply message (ETHTOOL_MSG_FEATURES_SET_REPLY) in the same format but with
different semantics: information about difference between user request and
actual result and difference between old and new state of dev->features.
This reply message can be suppressed by setting ETHTOOL_FLAG_OMIT_REPLY
flag in request header.

Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-12 15:32:32 -07:00
Michal Kubecek
0524399d46 ethtool: provide netdev features with FEATURES_GET request
Implement FEATURES_GET request to get network device features. These are
traditionally available via ETHTOOL_GFEATURES ioctl request.

v2:
  - style cleanup suggested by Jakub Kicinski

Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-12 15:32:32 -07:00
Al Viro
d9a9f4849f cifs_atomic_open(): fix double-put on late allocation failure
several iterations of ->atomic_open() calling conventions ago, we
used to need fput() if ->atomic_open() failed at some point after
successful finish_open().  Now (since 2016) it's not needed -
struct file carries enough state to make fput() work regardless
of the point in struct file lifecycle and discarding it on
failure exits in open() got unified.  Unfortunately, I'd missed
the fact that we had an instance of ->atomic_open() (cifs one)
that used to need that fput(), as well as the stale comment in
finish_open() demanding such late failure handling.  Trivially
fixed...

Fixes: fe9ec8291f "do_last(): take fput() on error after opening to out:"
Cc: stable@kernel.org # v4.7+
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2020-03-12 18:25:20 -04:00
Kuniyuki Iwashima
4b01a96742 tcp: bind(0) remove the SO_REUSEADDR restriction when ephemeral ports are exhausted.
Commit aacd9289af ("tcp: bind() use stronger
condition for bind_conflict") introduced a restriction to forbid to bind
SO_REUSEADDR enabled sockets to the same (addr, port) tuple in order to
assign ports dispersedly so that we can connect to the same remote host.

The change results in accelerating port depletion so that we fail to bind
sockets to the same local port even if we want to connect to the different
remote hosts.

You can reproduce this issue by following instructions below.

  1. # sysctl -w net.ipv4.ip_local_port_range="32768 32768"
  2. set SO_REUSEADDR to two sockets.
  3. bind two sockets to (localhost, 0) and the latter fails.

Therefore, when ephemeral ports are exhausted, bind(0) should fallback to
the legacy behaviour to enable the SO_REUSEADDR option and make it possible
to connect to different remote (addr, port) tuples.

This patch allows us to bind SO_REUSEADDR enabled sockets to the same
(addr, port) only when net.ipv4.ip_autobind_reuse is set 1 and all
ephemeral ports are exhausted. This also allows connect() and listen() to
share ports in the following way and may break some applications. So the
ip_autobind_reuse is 0 by default and disables the feature.

  1. setsockopt(sk1, SO_REUSEADDR)
  2. setsockopt(sk2, SO_REUSEADDR)
  3. bind(sk1, saddr, 0)
  4. bind(sk2, saddr, 0)
  5. connect(sk1, daddr)
  6. listen(sk2)

If it is set 1, we can fully utilize the 4-tuples, but we should use
IP_BIND_ADDRESS_NO_PORT for bind()+connect() as possible.

The notable thing is that if all sockets bound to the same port have
both SO_REUSEADDR and SO_REUSEPORT enabled, we can bind sockets to an
ephemeral port and also do listen().

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-12 12:08:09 -07:00
Alex Elder
e6e0f093d9 dt-bindings: soc: qcom: fix IPA binding
The definitions for the "qcom,smem-states" and "qcom,smem-state-names"
properties need to list their "$ref" under an "allOf" keyword.

In addition, fix two problems in the example at the end:
  - Use #include for header files that define needed symbolic values
  - Terminate the line that includes the "ipa-shared" register space
    name with a comma rather than a semicolon

Finally, update some white space in the example for better alignment.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-12 00:05:45 -07:00
Masanari Iida
661388f9b0 linux-next: DOC: RDS: Fix a typo in rds.txt
This patch fix a spelling typo in rds.txt

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-09 10:06:07 -07:00
Alex Elder
fc39c40a15 dt-bindings: soc: qcom: add IPA bindings
Add the binding definitions for the "qcom,ipa" device tree node.

Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-08 22:07:09 -07:00
Linus Torvalds
62790268e4 ARM: SoC fixes
We've been accruing these for a couple of weeks, so the batch is a bit
 bigger than usual.
 
 Largest delta is due to a led-bl driver that is added -- there was
 a miscommunication before the merge window and the driver didn't make it
 in. Due to this, the platforms needing it regressed. At this point, it
 seemed easier to add the new driver than unwind the changes.
 
 Besides that, there are a handful of various fixes:
 
  - AMD tee memory leak fix
 
  - A handful of fixlets for i.MX SCU communication
 
  - A few maintainers woke up and realized DEBUG_FS had been missing for
    a while, so a few updates of that.
 
  ... and the usual collection of smaller fixes to various platforms.
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC fixes from Olof Johansson:
 "We've been accruing these for a couple of weeks, so the batch is a bit
  bigger than usual.

  Largest delta is due to a led-bl driver that is added -- there was a
  miscommunication before the merge window and the driver didn't make it
  in. Due to this, the platforms needing it regressed. At this point, it
  seemed easier to add the new driver than unwind the changes.

  Besides that, there are a handful of various fixes:

   - AMD tee memory leak fix

   - A handful of fixlets for i.MX SCU communication

   - A few maintainers woke up and realized DEBUG_FS had been missing
     for a while, so a few updates of that.

  ... and the usual collection of smaller fixes to various platforms"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (37 commits)
  ARM: socfpga_defconfig: Add back DEBUG_FS
  arm64: dts: socfpga: agilex: Fix gmac compatible
  ARM: bcm2835_defconfig: Explicitly restore CONFIG_DEBUG_FS
  arm64: dts: meson: fix gxm-khadas-vim2 wifi
  arm64: dts: meson-sm1-sei610: add missing interrupt-names
  ARM: meson: Drop unneeded select of COMMON_CLK
  ARM: dts: bcm2711: Add pcie0 alias
  ARM: dts: bcm283x: Add missing properties to the PWR LED
  tee: amdtee: fix memory leak in amdtee_open_session()
  ARM: OMAP2+: Fix compile if CONFIG_HAVE_ARM_SMCCC is not set
  arm: dts: dra76x: Fix mmc3 max-frequency
  ARM: dts: dra7: Add "dma-ranges" property to PCIe RC DT nodes
  bus: ti-sysc: Fix 1-wire reset quirk
  ARM: dts: r8a7779: Remove deprecated "renesas, rcar-sata" compatible value
  soc: imx-scu: Align imx sc msg structs to 4
  firmware: imx: Align imx_sc_msg_req_cpu_start to 4
  firmware: imx: scu-pd: Align imx sc msg structs to 4
  firmware: imx: misc: Align imx sc msg structs to 4
  firmware: imx: scu: Ensure sequential TX
  ARM: dts: imx7-colibri: Fix frequency for sd/mmc
  ...
2020-03-08 17:36:22 -07:00
Linus Torvalds
b34e5c1332 Driver core / debugfs fixes for 5.6-rc5
Here are 4 small driver core / debugfs patches for 5.6-rc3
 
 They are:
 	- debugfs api cleanup now that all callers for
 	  debugfs_create_regset32() have been fixed up.  This was
 	  waiting until after the -rc1 merge as these fixes came in
 	  through different trees
 	- driver core sync state fixes based on reports of minor issues
 	  found in the feature
 
 All of these have been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-5.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core and debugfs fixes from Greg KH:
 "Here are four small driver core / debugfs patches for 5.6-rc3:

   - debugfs api cleanup now that all debugfs_create_regset32() callers
     have been fixed up. This was waiting until after the -rc1 merge as
     these fixes came in through different trees

   - driver core sync state fixes based on reports of minor issues found
     in the feature

  All of these have been in linux-next with no reported issues"

* tag 'driver-core-5.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  driver core: Skip unnecessary work when device doesn't have sync_state()
  driver core: Add dev_has_sync_state()
  driver core: Call sync_state() even if supplier has no consumers
  debugfs: remove return value of debugfs_create_regset32()
2020-03-08 10:39:40 -05:00
Ansuel Smith
ae9e82cc09 dt-bindings: net: Add ipq806x mdio bindings
Add documentations for ipq806x mdio driver.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-06 22:07:05 -08:00
Madalin Bucur
26d5bb9e4c dt-bindings: net: FMan erratum A050385
FMAN DMA read or writes under heavy traffic load may cause FMAN
internal resource leak; thus stopping further packet processing.

The FMAN internal queue can overflow when FMAN splits single
read or write transactions into multiple smaller transactions
such that more than 17 AXI transactions are in flight from FMAN
to interconnect. When the FMAN internal queue overflows, it can
stall further packet processing. The issue can occur with any one
of the following three conditions:

  1. FMAN AXI transaction crosses 4K address boundary (Errata
     A010022)
  2. FMAN DMA address for an AXI transaction is not 16 byte
     aligned, i.e. the last 4 bits of an address are non-zero
  3. Scatter Gather (SG) frames have more than one SG buffer in
     the SG list and any one of the buffers, except the last
     buffer in the SG list has data size that is not a multiple
     of 16 bytes, i.e., other than 16, 32, 48, 64, etc.

With any one of the above three conditions present, there is
likelihood of stalled FMAN packet processing, especially under
stress with multiple ports injecting line-rate traffic.

To avoid situations that stall FMAN packet processing, all of the
above three conditions must be avoided; therefore, configure the
system with the following rules:

  1. Frame buffers must not span a 4KB address boundary, unless
     the frame start address is 256 byte aligned
  2. All FMAN DMA start addresses (for example, BMAN buffer
     address, FD[address] + FD[offset]) are 16B aligned
  3. SG table and buffer addresses are 16B aligned and the size
     of SG buffers are multiple of 16 bytes, except for the last
     SG buffer that can be of any size.

Additional workaround notes:
- Address alignment of 64 bytes is recommended for maximally
efficient system bus transactions (although 16 byte alignment is
sufficient to avoid the stall condition)
- To support frame sizes that are larger than 4K bytes, there are
two options:
  1. Large single buffer frames that span a 4KB page boundary can
     be converted into SG frames to avoid transaction splits at
     the 4KB boundary,
  2. Align the large single buffer to 256B address boundaries,
     ensure that the frame address plus offset is 256B aligned.
- If software generated SG frames have buffers that are unaligned
and with random non-multiple of 16 byte lengths, before
transmitting such frames via FMAN, frames will need to be copied
into a new single buffer or multiple buffer SG frame that is
compliant with the three rules listed above.

Signed-off-by: Madalin Bucur <madalin.bucur@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-06 21:55:32 -08:00
Linus Torvalds
bdf1ea7ca8 Devicetree fixes for v5.6, take 3:
- Fixes for warnings introduced by hierarchical PSCI binding changes
 
 - Fixes for broken doc references due to DT schema conversions
 
 - Several grammar and typo fixes
 
 - Fix a bunch of dtc warnings in examples
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Merge tag 'devicetree-fixes-for-5.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull devicetree fixes from Rob Herring:
 "Another batch of DT fixes. I think this should be the last of it, but
  sending pull requests seems to cause people to send more fixes.

  Summary:

   - Fixes for warnings introduced by hierarchical PSCI binding changes

   - Fixes for broken doc references due to DT schema conversions

   - Several grammar and typo fixes

   - Fix a bunch of dtc warnings in examples"

* tag 'devicetree-fixes-for-5.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  dt-bindings: arm: Fixup the DT bindings for hierarchical PSCI states
  dt-bindings: power: Extend nodename pattern for power-domain providers
  MAINTAINERS: update ALLWINNER CPUFREQ DRIVER entry
  dt-bindings: bus: Drop empty compatible string in example
  dt-bindings: power: Convert domain-idle-states bindings to json-schema
  dt-bindings: arm: Fix cpu compatibles in the hierarchical example for PSCI
  dt-bindings: arm: Correct links to idle states definitions
  dt-bindings: mfd: Fix typo in file name of twl-familly.txt
  dt-bindings: mfd: tps65910: Improve grammar
  dt-bindings: mfd: zii,rave-sp: Fix a typo ("onborad")
  dt-bindings: arm: fsl: fix APF6Dev compatible
  dt-bindings: Fix dtc warnings in examples
  docs: dt: fix several broken doc references
  docs: dt: fix several broken references due to renames
  MAINTAINERS: clean up PCIE DRIVER FOR CAVIUM THUNDERX
2020-03-06 16:11:34 -06:00
Linus Torvalds
43c63729c9 regulator: Fixes for v5.6
A couple of small fixes, one for a minor issue in the stm32-vrefbuf
 driver and a documentation fix in the Qualcomm code.
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Merge tag 'regulator-fix-v5.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator fixes from Mark Brown:
 "A couple of small fixes, one for a minor issue in the stm32-vrefbuf
  driver and a documentation fix in the Qualcomm code"

* tag 'regulator-fix-v5.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: stm32-vrefbuf: fix a possible overshoot when re-enabling
  regulator: qcom_spmi: Fix docs for PM8004
2020-03-06 14:48:30 -06:00
Linus Torvalds
08e39fcb92 hwmon fixes for v5.6-rc5
Fix an error return in the adt7462 driver, bad voltage limits
 reported by the xdpe12284 driver, and a broken documentation
 reference in the adm1177 driver documentation.
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Merge tag 'hwmon-for-v5.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon fixes from Guenter Roeck:
 "Fix an error return in the adt7462 driver, bad voltage limits reported
  by the xdpe12284 driver, and a broken documentation reference in the
  adm1177 driver documentation"

* tag 'hwmon-for-v5.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (adt7462) Fix an error return in ADT7462_REG_VOLT()
  hwmon: (pmbus/xdpe12284) Add callback for vout limits conversion
  docs: adm1177: fix a broken reference
2020-03-06 14:47:06 -06:00
Ulf Hansson
d2334a91a3 dt-bindings: arm: Fixup the DT bindings for hierarchical PSCI states
The hierarchical topology with power-domain should be described through
child nodes, rather than as currently described in the PSCI root node. Fix
this by adding a patternProperties with a corresponding reference to the
power-domain DT binding.

Additionally, update the example to conform to the new pattern, but also to
the adjusted domain-idle-state DT binding.

Fixes: a3f048b542 ("dt: psci: Update DT bindings to support hierarchical PSCI states")
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
[robh: Add missing allOf, tweak power-domain node name]
Signed-off-by: Rob Herring <robh@kernel.org>
2020-03-06 12:12:21 -06:00
Ulf Hansson
14ee09a05e dt-bindings: power: Extend nodename pattern for power-domain providers
The existing binding requires the nodename to have a '@', which is a bit
limiting for the wider use case. Therefore, let's extend the pattern to
allow either '@' or '-'.

Fixes: a3f048b542 ("dt: psci: Update DT bindings to support hierarchical PSCI states")
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
[robh: drop example change]
Signed-off-by: Rob Herring <robh@kernel.org>
2020-03-06 12:12:20 -06:00
Linus Torvalds
fe67d1821f ACPI documentation fix for 5.6-rc5
Fix Sphinx format warinings in an ACPI fan document added
 recently (Randy Dunlap).
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Merge tag 'acpi-5.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI documentation fix from Rafael Wysocki:
 "Fix Sphinx format warinings in an ACPI fan document added recently
  (Randy Dunlap)"

* tag 'acpi-5.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  Documentation/admin-guide/acpi: fix fan_performance_states.rst warnings
2020-03-06 06:49:09 -06:00
Rafael J. Wysocki
86dfa5bec2 Merge branch 'acpi-doc'
* acpi-doc:
  Documentation/admin-guide/acpi: fix fan_performance_states.rst warnings
2020-03-06 10:57:46 +01:00
David S. Miller
a368e860ad wireless-drivers-next patches for v5.7
First set of patches for v5.7. Lots of mt76 patches as they missed the
 v5.6 deadline and hence they were postponed to the next version.
 Otherwise nothing special standing out.
 
 mt76
 
 Major changes:
 
 * dual-band concurrent support for MT7615
 
 * fixes for rx path race conditions
 
 * coverage class support for MT7615
 
 * beacon fixes for USB devices
 
 * MT7615 LED support
 
 * set_antenna support for MT7615
 
 * tracing improvements
 
 * preparation for supporting new USB devices
 
 * tx power fixes
 
 brcmfmac
 
 * support BRCM 4364 found in MacBook Pro 15,2
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Merge tag 'wireless-drivers-next-2020-03-05' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next

Kalle Valo says:

====================
wireless-drivers-next patches for v5.7

First set of patches for v5.7. Lots of mt76 patches as they missed the
v5.6 deadline and hence they were postponed to the next version.
Otherwise nothing special standing out.

mt76

Major changes:

* dual-band concurrent support for MT7615

* fixes for rx path race conditions

* coverage class support for MT7615

* beacon fixes for USB devices

* MT7615 LED support

* set_antenna support for MT7615

* tracing improvements

* preparation for supporting new USB devices

* tx power fixes

brcmfmac

* support BRCM 4364 found in MacBook Pro 15,2
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-05 15:08:10 -08:00
Linus Torvalds
6fd145da21 dmaengine fixes for v5.6-rc5
Bunch of driver fixes:
  - Doc updates to clean warnings for dmaengine
  - Fixes for newly added Intel idxd driver
  - More fixes for newly added TI k3-udma driver
  - Fixes for IMX and Tegra drivers.
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Merge tag 'dmaengine-fix-5.6-rc5' of git://git.infradead.org/users/vkoul/slave-dma

Pull dmaengine fixes from Vinod Koul:
 "A bunch of driver fixes:

   - Doc updates to clean warnings for dmaengine

   - Fixes for newly added Intel idxd driver

   - More fixes for newly added TI k3-udma driver

   - Fixes for IMX and Tegra drivers"

* tag 'dmaengine-fix-5.6-rc5' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: imx-sdma: Fix the event id check to include RX event for UART6
  dmaengine: tegra-apb: Prevent race conditions of tasklet vs free list
  dmaengine: tegra-apb: Fix use-after-free
  dmaengine: imx-sdma: fix context cache
  dmaengine: idxd: wq size configuration needs to check global max size
  dmaengine: idxd: sysfs input of wq incorrect wq type should return error
  dmaengine: coh901318: Fix a double lock bug in dma_tc_handle()
  dmaengine: idxd: correct reserved token calculation
  dmaengine: ti: k3-udma: Fix terminated transfer handling
  dmaengine: ti: k3-udma: Use the channel direction in pause/resume functions
  dmaengine: ti: k3-udma: Use the TR counter helper for slave_sg and cyclic
  dmaengine: ti: k3-udma: Move the TR counter calculation to helper function
  dmaengine: ti: k3-udma: Workaround for RX teardown with stale data in peer
  dmaengine: ti: k3-udma: Use ktime/usleep_range based TX completion check
  dmaengine: idxd: Fix error handling in idxd_wq_cdev_dev_setup()
  dmaengine: doc: fix warnings/issues of client.rst
  dmaengine: idxd: fix runaway module ref count on device driver bind
2020-03-05 12:19:34 -06:00
Luke Nelson
06b7415216 bpf, doc: Add BPF JIT for RV32G to BPF documentation
Update filter.txt and admin-guide to mention the BPF JIT for RV32G.

Co-developed-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Luke Nelson <luke.r.nels@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Björn Töpel <bjorn.topel@gmail.com>
Acked-by: Björn Töpel <bjorn.topel@gmail.com>
Link: https://lore.kernel.org/bpf/20200305050207.4159-4-luke.r.nels@gmail.com
2020-03-05 16:13:47 +01:00
Rob Herring
07f5ae220b dt-bindings: bus: Drop empty compatible string in example
In preparation to add generic checks of compatible strings, drop
the compatible as '...' is not a valid compatible string.

Cc: Maxime Ripard <mripard@kernel.org>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Rob Herring <robh@kernel.org>
2020-03-04 13:59:24 -06:00
Ulf Hansson
3261227d13 dt-bindings: power: Convert domain-idle-states bindings to json-schema
While converting to the json-schema, let's also take the opportunity to
further specify/clarify some more details about the DT binding.

For example, let's define the label where to put the states nodes, set a
pattern for nodename of the state nodes and finally add an example.

Fixes: a3f048b542 ("dt: psci: Update DT bindings to support hierarchical PSCI states")
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
[robh: drop type refs from standard unit properties]
Signed-off-by: Rob Herring <robh@kernel.org>
2020-03-04 08:49:36 -06:00
Ulf Hansson
ac9686a936 dt-bindings: arm: Fix cpu compatibles in the hierarchical example for PSCI
Fixes: a3f048b542 ("dt: psci: Update DT bindings to support hierarchical PSCI states")
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
2020-03-04 08:47:53 -06:00
Ulf Hansson
8d62d9c4bc dt-bindings: arm: Correct links to idle states definitions
The arm,idle-state DT bindings recently got converted to the json-schema,
but some links are still pointing to the old, non-existing, txt file. Let's
update the links to fix this.

Fixes: baac82fe06 ("dt-bindings: arm: Convert arm,idle-state binding to DT schema")
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
2020-03-04 08:46:53 -06:00
Jacob Keller
707518348a devlink: remove trigger command from devlink-region.rst
The devlink trigger command does not exist. While rewriting the
documentation for devlink into the reStructuredText format,
documentation for the trigger command was accidentally merged in. This
occurred because the author was also working on a potential extension to
devlink regions which included this trigger command, and accidentally
squashed the documentation incorrectly.

Further review eventually settled on using the previously unused "new"
command instead of creating a new trigger command.

Fix this by removing mention of the trigger command from the
documentation.

Fixes: 0b0f945f54 ("devlink: add a file documenting devlink regions", 2020-01-10)
Noticed-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-03 17:35:54 -08:00
Olof Johansson
820d15632e arm64: dts: agilex: fix gmac compatible
- The compatible for Agilex GMAC should be "altr,socfpga-stmmac-a10-s10"
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Merge tag 'socfpga_dts_fix_for_v5.6_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux into arm/fixes

arm64: dts: agilex: fix gmac compatible
- The compatible for Agilex GMAC should be "altr,socfpga-stmmac-a10-s10"

* tag 'socfpga_dts_fix_for_v5.6_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux: (578 commits)
  arm64: dts: socfpga: agilex: Fix gmac compatible
  Linux 5.6-rc4
  KVM: VMX: check descriptor table exits on instruction emulation
  ext4: potential crash on allocation error in ext4_alloc_flex_bg_array()
  macintosh: therm_windtunnel: fix regression when instantiating devices
  jbd2: fix data races at struct journal_head
  kvm: x86: Limit the number of "kvm: disabled by bios" messages
  KVM: x86: avoid useless copy of cpufreq policy
  KVM: allow disabling -Werror
  KVM: x86: allow compiling as non-module with W=1
  KVM: Pre-allocate 1 cpumask variable per cpu for both pv tlb and pv ipis
  KVM: Introduce pv check helpers
  KVM: let declaration of kvm_get_running_vcpus match implementation
  KVM: SVM: allocate AVIC data structures based on kvm_amd module parameter
  MAINTAINERS: Correct Cadence PCI driver path
  io_uring: fix 32-bit compatability with sendmsg/recvmsg
  net: dsa: mv88e6xxx: Fix masking of egress port
  mlxsw: pci: Wait longer before accessing the device after reset
  sfc: fix timestamp reconstruction at 16-bit rollover points
  vsock: fix potential deadlock in transport->release()
  ...

Link: https://lore.kernel.org/r/20200303153509.28248-1-dinguyen@kernel.org
Signed-off-by: Olof Johansson <olof@lixom.net>
2020-03-03 16:40:56 -08:00
Jonathan Neuschäfer
f8a0fea951 docs: networking: net_failover: Fix a few typos
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-03 16:07:02 -08:00
Russell King
c04d102ba5 doc: sfp-phylink: correct code indentation
Using vim to edit the phylink documentation reveals some mistakes due
to the "invisible" pythonesque white space indentation that can't be
seen with other editors. Fix it.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-03 15:33:55 -08:00
Jonathan Neuschäfer
50bbd62ce7 dt-bindings: mfd: Fix typo in file name of twl-familly.txt
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: Rob Herring <robh@kernel.org>
2020-03-03 16:39:05 -06:00
Jonathan Neuschäfer
8c6687efcf dt-bindings: mfd: tps65910: Improve grammar
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: Rob Herring <robh@kernel.org>
2020-03-03 16:38:12 -06:00
Jonathan Neuschäfer
b94858a7ea dt-bindings: mfd: zii,rave-sp: Fix a typo ("onborad")
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: Rob Herring <robh@kernel.org>
2020-03-03 16:37:38 -06:00
Sébastien Szymanski
ab4562f4dd dt-bindings: arm: fsl: fix APF6Dev compatible
APF6 Dev compatible is armadeus,imx6dl-apf6dev and not
armadeus,imx6dl-apf6dldev.

Fixes: 3d735471d0 ("dt-bindings: arm: Document Armadeus SoM and Dev boards devicetree binding")
Signed-off-by: Sébastien Szymanski <sebastien.szymanski@armadeus.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2020-03-02 16:24:50 -06:00
Rob Herring
51a21e0e7b dt-bindings: Fix dtc warnings in examples
Fix all the warnings in the DT binding schema examples when built with
'W=1'. This is in preparation to make that the default for examples.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Kishon Vijay Abraham I <kishon@ti.com>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2020-02-28 14:15:52 -06:00
David S. Miller
549da33801 mlx5-updates-2020-02-27
mlx5 misc updates and minor cleanups:
 
 1) Use per vport tables for mirroring
 2) Improve log messages for SW steering (DR)
 3) Add devlink fdb_large_groups parameter
 4) E-Switch, Allow goto earlier chain
 5) Don't allow forwarding between uplink representors
 6) Add support for devlink-port in non-representors mode
 7) Minor misc cleanups
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Merge tag 'mlx5-updates-2020-02-27' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
mlx5-updates-2020-02-27

mlx5 misc updates and minor cleanups:

1) Use per vport tables for mirroring
2) Improve log messages for SW steering (DR)
3) Add devlink fdb_large_groups parameter
4) E-Switch, Allow goto earlier chain
5) Don't allow forwarding between uplink representors
6) Add support for devlink-port in non-representors mode
7) Minor misc cleanups
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-28 11:59:53 -08:00
Linus Torvalds
c60c040213 ACPI fixes for 5.6-rc4
Fix a couple of configuration issues in the ACPI watchdog (WDAT)
 driver (Mika Westerberg) and make it possible to disable that
 driver at boot time in case it still does not work as
 expected (Jean Delvare).
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Merge tag 'acpi-5.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fixes from Rafael Wysocki:
 "Fix a couple of configuration issues in the ACPI watchdog (WDAT)
  driver (Mika Westerberg) and make it possible to disable that driver
  at boot time in case it still does not work as expected (Jean
  Delvare)"

* tag 'acpi-5.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: watchdog: Set default timeout in probe
  ACPI: watchdog: Fix gas->access_width usage
  ACPICA: Introduce ACPI_ACCESS_BYTE_WIDTH() macro
  ACPI: watchdog: Allow disabling WDAT at boot
2020-02-28 09:02:18 -08:00