The msk can use backup subflows to transmit in-sequence data
only if there are no other active subflow. On active backup
scenario, the MPTCP connection can do forward progress only
due to MPTCP retransmissions - rtx can pick backup subflows.

This patch introduces a new flag flow MPTCP subflows: if the
underlying TCP connection made no progresses for long time,
and there are other less problematic subflows available, the
given subflow become stale.

Stale subflows are not considered active: if all non backup
subflows become stale, the MPTCP scheduler can pick backup
subflows for plain transmissions.

Stale subflows can return in active state, as soon as any reply
from the peer is observed.

Active backup scenarios can now leverage the available b/w
with no restrinction.

Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/207Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Reorder the data in mptcp_pernet to avoid wasting space
with no reasons and constify the access helpers.

No functional changes intended.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The PM can close active subflow, e.g. due to ingress RM_ADDR
option. Such subflow could carry data still unacked at the
MPTCP-level, both in the write and the rtx_queue, which has
never reached the other peer.

Currently the mptcp-level retransmission will deliver such data,
but at a very low rate (at most 1 DSM for each MPTCP rtx interval).

We can speed-up the recovery a lot, moving all the unacked in the
tcp write_queue, so that it will be pushed again via other
subflows, at the speed allowed by them.

Also make available the new helper for later patches.

Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/207Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The current mptcp re-inject strategy is very aggressive,
we have mptcp-level retransmissions even on single subflow
connection, if the link in-use is lossy.

Let's be a little more conservative: we do retransmit
only if at least a subflow has write and rtx queue empty.

Additionally use the backup subflows only if the active
subflows are stale - no progresses in at least an rtx period
and ignore stale subflows for rtx timeout update

Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/207Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

As reported by Maxim, we have a lot of MPTCP-level
retransmissions when multilple links with different latencies
are in use.

This patch refactor the mptcp-level timeout accounting so that
the maximum of all the active subflow timeout is used. To avoid
traversing the subflow list multiple times, the update is
performed inside the packet scheduler.

Additionally clean-up a bit timeout handling.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The 'imply' keyword does not do what most people think it does, it only
politely asks Kconfig to turn on another symbol, but does not prevent
it from being disabled manually or built as a loadable module when the
user is built-in. In the ICE driver, the latter now causes a link failure:

aarch64-linux-ld: drivers/net/ethernet/intel/ice/ice_main.o: in function `ice_eth_ioctl':
ice_main.c:(.text+0x13b0): undefined reference to `ice_ptp_get_ts_config'
ice_main.c:(.text+0x13b0): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `ice_ptp_get_ts_config'
aarch64-linux-ld: ice_main.c:(.text+0x13bc): undefined reference to `ice_ptp_set_ts_config'
ice_main.c:(.text+0x13bc): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `ice_ptp_set_ts_config'
aarch64-linux-ld: drivers/net/ethernet/intel/ice/ice_main.o: in function `ice_prepare_for_reset':
ice_main.c:(.text+0x31fc): undefined reference to `ice_ptp_release'
ice_main.c:(.text+0x31fc): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `ice_ptp_release'
aarch64-linux-ld: drivers/net/ethernet/intel/ice/ice_main.o: in function `ice_rebuild':

This is a recurring problem in many drivers, and we have discussed
it several times befores, without reaching a consensus. I'm providing
a link to the previous email thread for reference, which discusses
some related problems.

To solve the dependency issue better than the 'imply' keyword, introduce a
separate Kconfig symbol "CONFIG_PTP_1588_CLOCK_OPTIONAL" that any driver
can depend on if it is able to use PTP support when available, but works
fine without it. Whenever CONFIG_PTP_1588_CLOCK=m, those drivers are
then prevented from being built-in, the same way as with a 'depends on
PTP_1588_CLOCK || !PTP_1588_CLOCK' dependency that does the same trick,
but that can be rather confusing when you first see it.

Since this should cover the dependencies correctly, the IS_REACHABLE()
hack in the header is no longer needed now, and can be turned back
into a normal IS_ENABLED() check. Any driver that gets the dependency
wrong will now cause a link time failure rather than being unable to use
PTP support when that is in a loadable module.

However, the two recently added ptp_get_vclocks_index() and
ptp_convert_timestamp() interfaces are only called from builtin code with
ethtool and socket timestamps, so keep the current behavior by stubbing
those out completely when PTP is in a loadable module. This should be
addressed properly in a follow-up.

As Richard suggested, we may want to actually turn PTP support into a
'bool' option later on, preventing it from being a loadable module
altogether, which would be one way to solve the problem with the ethtool
interface.

Fixes: 06c16d89 ("ice: register 1588 PTP clock device object for E810 devices")
Link: https://lore.kernel.org/netdev/20210804121318.337276-1-arnd@kernel.org/
Link: https://lore.kernel.org/netdev/CAK8P3a06enZOf=XyZ+zcAwBczv41UuCTz+=0FMf2gBz1_cOnZQ@mail.gmail.com/
Link: https://lore.kernel.org/netdev/CAK8P3a3=eOxE-K25754+fB_-i_0BZzf9a9RfPTX3ppSwu9WZXw@mail.gmail.com/
Link: https://lore.kernel.org/netdev/20210726084540.3282344-1-arnd@kernel.org/Acked-by: Shannon Nelson <snelson@pensando.io>
Acked-by: Jacob Keller <jacob.e.keller@intel.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20210812183509.1362782-1-arnd@kernel.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Add support for SFP cages connected to the Marvell 88E1512 transceiver.
88E1512 supports for SGMII/1000Base-X/100Base-FX media type with RGMII
on system interface. Configure PHY to appropriate mode depending on the
type of SFP inserted. On SFP removal configure PHY to the RGMII-copper
mode so RJ-45 port can still work.
Signed-off-by: Ivan Bornyakov <i.bornyakov@metrotek.ru>
Link: https://lore.kernel.org/r/20210812134256.2436-1-i.bornyakov@metrotek.ruSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Lukas Bulwahn says:

====================
Kconfig symbol clean-up on net

The script ./scripts/checkkconfigsymbols.py warns on invalid references to
Kconfig symbols (often, minor typos, name confusions or outdated references).

This patch series addresses all issues reported by
./scripts/checkkconfigsymbols.py in ./net/ and ./drivers/net/ for Kconfig
and Makefile files. Issues in the Kconfig and Makefile files indicate some
shortcomings in the overall build definitions, and often are true actionable
issues to address.

These issues can be identified and filtered by:

  ./scripts/checkkconfigsymbols.py \
  | grep -E "(drivers/)?net/.*(Kconfig|Makefile)" -B 1 -A 1

After applying this patch series on linux-next (next-20210811), the command
above yields no further issues to address.
====================

Link: https://lore.kernel.org/r/20210812083806.28434-1-lukas.bulwahn@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

The menuconfig FSL_DPAA_ETH selects config FSL_FMAN_MAC, but the config
FSL_FMAN_MAC never existed in the kernel tree.

Hence, ./scripts/checkkconfigsymbols.py warns:

FSL_FMAN_MAC
Referencing files: drivers/net/ethernet/freescale/dpaa/Kconfig

Remove this dead select in menuconfig FSL_DPAA_ETH.

Fixes: 9ad1a374 ("dpaa_eth: add support for DPAA Ethernet")
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Acked-by: Madalin Bucur <madalin.bucur@oss.nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Commit 7a2e838d ("staging: ipx: delete it from the tree") removes the
ipx driver and the config IPX. Since then, there is some dead leftover in
./net/802/, that was once used by the IPX driver, but has no other user.

Remove this dead leftover.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Commit 05cdf457 ("microblaze: Remove noMMU code") removes config
MICROBLAZE_64K_PAGES in arch/microblaze/Kconfig. However, there is still
a reference to MICROBLAZE_64K_PAGES in the config VMXNET3 in
./drivers/net/Kconfig.

Remove this obsolete reference to config MICROBLAZE_64K_PAGES.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Add documentation for SAMA5D29 ethernet interface.
Signed-off-by: Hari Prasath <Hari.PrasathGE@microchip.com>
Link: https://lore.kernel.org/r/20210812074422.13487-2-Hari.PrasathGE@microchip.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Add PTP capability to the macb config object for sama5d29.
Signed-off-by: Hari Prasath <Hari.PrasathGE@microchip.com>
Link: https://lore.kernel.org/r/20210812074422.13487-1-Hari.PrasathGE@microchip.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

By default FEC driver treat irq[0] (i.e. int0 described in dt-binding) as
wakeup interrupt, but this situation changed on i.MX8M serials, SoC
integration guys mix wakeup interrupt signal into int2 interrupt line.
This patch introduces FEC_QUIRK_WAKEUP_FROM_INT2 to indicate int2 as wakeup
interrupt for i.MX8MQ.
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Link: https://lore.kernel.org/r/20210812070948.25797-1-qiangqing.zhang@nxp.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

The EtherAVB instances on the R-Car E3/D3 and RZ/G2E SoCs do not support
TX clock internal delay modes, and the EtherAVB driver prints a warning
if an unsupported "rgmii-*id" PHY mode is specified, to catch buggy
DTBs.

Commit a6f51f2e ("ravb: Add support for explicit internal
clock delay configuration") deprecated deriving the internal delay mode
from the PHY mode, in favor of explicit configuration using the now
mandatory "rx-internal-delay-ps" and "tx-internal-delay-ps" properties,
thus delegating the warning to the legacy fallback code.

Since explicit configuration of a (valid) internal clock delay
configuration is enforced by validating device tree source files against
DT binding files, and all upstream DTS files have been converted as of
commit a5200e63 ("arm64: dts: renesas: rzg2: Convert EtherAVB to
explicit delay handling"), the checks in the legacy fallback code can be
removed.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://lore.kernel.org/r/2037542ac56e99413b9807e24049711553cc88a9.1628696778.git.geert+renesas@glider.beSigned-off-by: Jakub Kicinski <kuba@kernel.org>

_hso_serial_set_termios() doesn't use it's second argument, so it can be
dropped.
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Link: https://lore.kernel.org/r/20210811171321.18317-1-paskripkin@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Replace the obsolete and ambiguos macro in_irq() with new
macro in_hardirq().
Signed-off-by: Changbin Du <changbin.du@gmail.com>
Link: https://lore.kernel.org/r/20210813145749.86512-1-changbin.du@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

The new vlan+srcmac xmit policy is not implementable with XDP since
in many cases the 802.1Q payload is not present in the packet. This
can be for example due to hardware offload or in the case of veth
due to use of skbuffs internally.

This also fixes the NULL deref with the vlan+srcmac xmit policy
reported by Jonathan Toppins by additionally checking the skb
pointer.

Fixes: a815bde5 ("net, bonding: Refactor bond_xmit_hash for use with xdp_buff")
Reported-by: Jonathan Toppins <jtoppins@redhat.com>
Signed-off-by: Jussi Maki <joamaki@gmail.com>
Reviewed-by: Jonathan Toppins <jtoppins@redhat.com>
Link: https://lore.kernel.org/r/20210812145241.12449-1-joamaki@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

syzkaller found that OOB code was holding spinlock
while calling a function in which it could sleep.

Reported-by: syzbot+8760ca6c1ee783ac4abd@syzkaller.appspotmail.com
Fixes: 314001f0 ("af_unix: Add OOB support")
Signed-off-by: Rao Shoaib <rao.shoaib@oracle.com>
Link: https://lore.kernel.org/r/20210811220652.567434-1-Rao.Shoaib@oracle.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Conflicts:

drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h
  9e266807 ("bnxt_en: Update firmware call to retrieve TX PTP timestamp")
  9e518f25 ("bnxt_en: 1PPS functions to configure TSIO pins")
  099fdeda ("bnxt_en: Event handler for PPS events")

kernel/bpf/helpers.c
include/linux/bpf-cgroup.h
  a2baf4e8 ("bpf: Fix potentially incorrect results with bpf_get_local_storage()")
  c7603cfa ("bpf: Add ambient BPF runtime context stored in current")

drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c
  5957cc55 ("net/mlx5: Set all field of mlx5_irq before inserting it to the xarray")
  2d0b41a3 ("net/mlx5: Refcount mlx5_irq with integer")

MAINTAINERS
  7b637cd5 ("MAINTAINERS: fix Microchip CAN BUS Analyzer Tool entry typo")
  7d901a1e ("net: phy: add Maxlinear GPY115/21x/24x driver")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Pull networking fixes from Jakub Kicinski:
 "Networking fixes, including fixes from netfilter, bpf, can and
  ieee802154.

  The size of this is pretty normal, but we got more fixes for 5.14
  changes this week than last week. Nothing major but the trend is the
  opposite of what we like. We'll see how the next week goes..

  Current release - regressions:

   - r8169: fix ASPM-related link-up regressions

   - bridge: fix flags interpretation for extern learn fdb entries

   - phy: micrel: fix link detection on ksz87xx switch

   - Revert "tipc: Return the correct errno code"

   - ptp: fix possible memory leak caused by invalid cast

  Current release - new code bugs:

   - bpf: add missing bpf_read_[un]lock_trace() for syscall program

   - bpf: fix potentially incorrect results with bpf_get_local_storage()

   - page_pool: mask the page->signature before the checking, avoid dma
     mapping leaks

   - netfilter: nfnetlink_hook: 5 fixes to information in netlink dumps

   - bnxt_en: fix firmware interface issues with PTP

   - mlx5: Bridge, fix ageing time

  Previous releases - regressions:

   - linkwatch: fix failure to restore device state across
     suspend/resume

   - bareudp: fix invalid read beyond skb's linear data

  Previous releases - always broken:

   - bpf: fix integer overflow involving bucket_size

   - ppp: fix issues when desired interface name is specified via
     netlink

   - wwan: mhi_wwan_ctrl: fix possible deadlock

   - dsa: microchip: ksz8795: fix number of VLAN related bugs

   - dsa: drivers: fix broken backpressure in .port_fdb_dump

   - dsa: qca: ar9331: make proper initial port defaults

  Misc:

   - bpf: add lockdown check for probe_write_user helper

   - netfilter: conntrack: remove offload_pickup sysctl before 5.14 is
     out

   - netfilter: conntrack: collect all entries in one cycle,
     heuristically slow down garbage collection scans on idle systems to
     prevent frequent wake ups"

* tag 'net-5.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (87 commits)
  vsock/virtio: avoid potential deadlock when vsock device remove
  wwan: core: Avoid returning NULL from wwan_create_dev()
  net: dsa: sja1105: unregister the MDIO buses during teardown
  Revert "tipc: Return the correct errno code"
  net: mscc: Fix non-GPL export of regmap APIs
  net: igmp: increase size of mr_ifc_count
  MAINTAINERS: switch to my OMP email for Renesas Ethernet drivers
  tcp_bbr: fix u32 wrap bug in round logic if bbr_init() called after 2B packets
  net: pcs: xpcs: fix error handling on failed to allocate memory
  net: linkwatch: fix failure to restore device state across suspend/resume
  net: bridge: fix memleak in br_add_if()
  net: switchdev: zero-initialize struct switchdev_notifier_fdb_info emitted by drivers towards the bridge
  net: bridge: fix flags interpretation for extern learn fdb entries
  net: dsa: sja1105: fix broken backpressure in .port_fdb_dump
  net: dsa: lantiq: fix broken backpressure in .port_fdb_dump
  net: dsa: lan9303: fix broken backpressure in .port_fdb_dump
  net: dsa: hellcreek: fix broken backpressure in .port_fdb_dump
  bpf, core: Fix kernel-doc notation
  net: igmp: fix data-race in igmp_ifc_timer_expire()
  net: Fix memory leak in ieee802154_raw_deliver
  ...

Pull ceph fixes from Ilya Dryomov:
 "A patch to avoid a soft lockup in ceph_check_delayed_caps() from Luis
  and a reference handling fix from Jeff that should address some memory
  corruption reports in the snaprealm area.

  Both marked for stable"

* tag 'ceph-for-5.14-rc6' of git://github.com/ceph/ceph-client:
  ceph: take snap_empty_lock atomically with snaprealm refcount change
  ceph: reduce contention in ceph_check_delayed_caps()

Pull drm fixes from Dave Airlie:
 "Another week, another set of pretty regular fixes, nothing really
  stands out too much.

  amdgpu:
   - Yellow carp update
   - RAS EEPROM fixes
   - BACO/BOCO fixes
   - Fix a memory leak in an error path
   - Freesync fix
   - VCN harvesting fix
   - Display fixes

  i915:
   - GVT fix for Windows VM hang.
   - Display fix of 12 BPC bits for display 12 and newer.
   - Don't try to access some media register for fused off domains.
   - Fix kerneldoc build warnings.

  mediatek:
   - Fix dpi bridge bug.
   - Fix cursor plane no update.

  meson:
   - Fix colors when booting with HDR"

* tag 'drm-fixes-2021-08-13' of git://anongit.freedesktop.org/drm/drm:
  drm/doc/rfc: drop lmem uapi section
  drm/i915: Only access SFC_DONE when media domain is not fused off
  drm/i915/display: Fix the 12 BPC bits for PIPE_MISC reg
  drm/amd/display: use GFP_ATOMIC in amdgpu_dm_irq_schedule_work
  drm/amd/display: Remove invalid assert for ODM + MPC case
  drm/amd/pm: bug fix for the runtime pm BACO
  drm/amdgpu: handle VCN instances when harvesting (v2)
  drm/meson: fix colour distortion from HDR set during vendor u-boot
  drm/i915/gvt: Fix cached atomics setting for Windows VM
  drm/amdgpu: Add preferred mode in modeset when freesync video mode's enabled.
  drm/amd/pm: Fix a memory leak in an error handling path in 'vangogh_tables_init()'
  drm/amdgpu: don't enable baco on boco platforms in runpm
  drm/amdgpu: set RAS EEPROM address from VBIOS
  drm/amd/pm: update smu v13.0.1 firmware header
  drm/mediatek: Fix cursor plane no update
  drm/mediatek: mtk-dpi: Set out_fmt from config if not the last bridge
  drm/mediatek: dpi: Fix NULL dereference in mtk_dpi_bridge_atomic_check

On some newer SoCs, the interconnect between IPA and SoC internal
memory (imem) is not used.  Update the binding to indicate that
having just the memory and config interconnects is another allowed
configuration.
Signed-off-by: Alex Elder <elder@linaro.org>
Link: https://lore.kernel.org/r/20210811141802.2635424-1-elder@linaro.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

It isn't required, but all callers of ipa_aggr_granularity_val()
pass a constant value (IPA_AGGR_GRANULARITY) as the usec argument.
Two of those callers are in ipa_validate_build(), with the result
being passed to BUILD_BUG_ON().

Evidently the "sparc64-linux-gcc" compiler (at least) doesn't always
inline ipa_aggr_granularity_val(), so the result of the function is
not constant at compile time, and that leads to build errors.

Define the function with the __always_inline attribute to avoid the
errors.  We can see by inspection that the value passed is never
zero, so we can just remove its WARN_ON() call.

Fixes: 5bc55884 ("net: ipa: use WARN_ON() rather than assertions")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Alex Elder <elder@linaro.org>
Link: https://lore.kernel.org/r/20210811135948.2634264-1-elder@linaro.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Short summary of fixes pull:

 * meson: Fix colors when booting with HDR
Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/YRTb+qUuBYWjJDVg@linux-uq9g.fritz.box

Merge tag 'drm-intel-fixes-2021-08-12' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

- GVT fix for Windows VM hang.
- Display fix of 12 BPC bits for display 12 and newer.
- Don't try to access some media register for fused off domains.
- Fix kerneldoc build warnings.
Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/YRU/hnQ1sNr+j37x@intel.com

Merge tag 'ieee802154-for-davem-2021-08-12' of git://git.kernel.org/pub/scm/linux/kernel/git/sschmidt/wpan

Stefan Schmidt says:

====================
ieee802154 for net 2021-08-12

Mostly fixes coming from bot reports. Dongliang Mu tackled some syzkaller
reports in hwsim again and Takeshi Misawa a memory leak  in  ieee802154 raw.

* tag 'ieee802154-for-davem-2021-08-12' of git://git.kernel.org/pub/scm/linux/kernel/git/sschmidt/wpan:
  net: Fix memory leak in ieee802154_raw_deliver
  ieee802154: hwsim: fix GPF in hwsim_new_edge_nl
  ieee802154: hwsim: fix GPF in hwsim_set_edge_lqi
====================

Link: https://lore.kernel.org/r/20210812183912.1663996-1-stefan@datenfreihafen.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

There's a potential deadlock case when remove the vsock device or
process the RESET event:

  vsock_for_each_connected_socket:
      spin_lock_bh(&vsock_table_lock) ----------- (1)
      ...
          virtio_vsock_reset_sock:
              lock_sock(sk) --------------------- (2)
      ...
      spin_unlock_bh(&vsock_table_lock)

lock_sock() may do initiative schedule when the 'sk' is owned by
other thread at the same time, we would receivce a warning message
that "scheduling while atomic".

Even worse, if the next task (selected by the scheduler) try to
release a 'sk', it need to request vsock_table_lock and the deadlock
occur, cause the system into softlockup state.
  Call trace:
   queued_spin_lock_slowpath
   vsock_remove_bound
   vsock_remove_sock
   virtio_transport_release
   __vsock_release
   vsock_release
   __sock_release
   sock_close
   __fput
   ____fput

So we should not require sk_lock in this case, just like the behavior
in vhost_vsock or vmci.

Fixes: 0ea9e1d3 ("VSOCK: Introduce virtio_transport.ko")
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/r/20210812053056.1699-1-longpeng2@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Pull ucounts fix from Eric Biederman:
 "This fixes the ucount sysctls on big endian architectures.

  The counts were expanded to be longs instead of ints, and the sysctl
  code was overlooked, so only the low 32bit were being processed. On
  litte endian just processing the low 32bits is fine, but on 64bit big
  endian processing just the low 32bits results in the high order bits
  instead of the low order bits being processed and nothing works
  proper.

  This change took a little bit to mature as we have the SYSCTL_ZERO,
  and SYSCTL_INT_MAX macros that are only usable for sysctls operating
  on ints, but unfortunately are not obviously broken. Which resulted in
  the versions of this change working on big endian and not on little
  endian, because the int SYSCTL_ZERO when extended 64bit wound up being
  0x100000000. So we only allowed values greater than 0x100000000 and
  less than 0faff. Which unfortunately broken everything that tried to
  set the sysctls. (First reported with the windows subsystem for
  linux).

  I have tested this on x86_64 64bit after first reproducing the
  problems with the earlier version of this change, and then verifying
  the problems do not exist when we use appropriate long min and max
  values for extra1 and extra2"

* 'for-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  ucounts: add missing data type changes

Pull sound fixes from Takashi Iwai:
 "This seems to be a usual bump in the middle, containing lots of
  pending ASoC fixes:

   - Yet another PCM mmap regression fix

   - Fix for ASoC DAPM prefix handling

   - Various cs42l42 codec fixes

   - PCM buffer reference fixes in a few ASoC drivers

   - Fixes for ASoC SOF, AMD, tlv320, WM

   - HD-audio quirks"

* tag 'sound-5.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (32 commits)
  ALSA: hda/realtek: fix mute/micmute LEDs for HP ProBook 650 G8 Notebook PC
  ALSA: pcm: Fix mmap breakage without explicit buffer setup
  ALSA: hda: Add quirk for ASUS Flow x13
  ASoC: cs42l42: Fix mono playback
  ASoC: cs42l42: Constrain sample rate to prevent illegal SCLK
  ASoC: cs42l42: Fix LRCLK frame start edge
  ASoC: cs42l42: PLL must be running when changing MCLK_SRC_SEL
  ASoC: cs42l42: Remove duplicate control for WNF filter frequency
  ASoC: cs42l42: Fix inversion of ADC Notch Switch control
  ASoC: SOF: Intel: hda-ipc: fix reply size checking
  ASoC: SOF: Intel: Kconfig: fix SoundWire dependencies
  ASoC: amd: Fix reference to PCM buffer address
  ASoC: nau8824: Fix open coded prefix handling
  ASoC: kirkwood: Fix reference to PCM buffer address
  ASoC: uniphier: Fix reference to PCM buffer address
  ASoC: xilinx: Fix reference to PCM buffer address
  ASoC: intel: atom: Fix reference to PCM buffer address
  ASoC: cs42l42: Fix bclk calculation for mono
  ASoC: cs42l42: Don't allow SND_SOC_DAIFMT_LEFT_J
  ASoC: cs42l42: Correct definition of ADC Volume control
  ...

Make wwan_create_dev() to return either valid or error pointer,
In some cases it may return NULL. Prevent this by converting
it to the respective error pointer.

Fixes: 9a44c1cc ("net: Add a WWAN subsystem")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Link: https://lore.kernel.org/r/20210811124845.10955-1-andriy.shevchenko@linux.intel.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Saeed Mahameed says:

====================
mlx5 updates 2021-08-11

This series provides misc updates to mlx5.
For more information please see tag log below.

Please pull and let me know if there is any problem.

mlx5-updates-2021-08-11

Misc. cleanup for mlx5.

1) Typos and use of netdev_warn()
2) smatch cleanup
3) Minor fix to inner TTC table creation
4) Dynamic capability cache allocation
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Vladimir Oltean says:

====================
Improvements to the DSA tag_8021q cross-chip notifiers

This series improves cross-chip notifier error messages and addresses a
benign error message seen during reboot on a system with disjoint DSA
trees.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Currently, on my board with multiple sja1105 switches in disjoint trees
described in commit f66a6a69 ("net: dsa: permit cross-chip bridging
between all trees in the system"), rebooting the board triggers the
following benign warnings:

[   12.345566] sja1105 spi2.0: port 0 failed to notify tag_8021q VLAN 1088 deletion: -ENOENT
[   12.353804] sja1105 spi2.0: port 0 failed to notify tag_8021q VLAN 2112 deletion: -ENOENT
[   12.362019] sja1105 spi2.0: port 1 failed to notify tag_8021q VLAN 1089 deletion: -ENOENT
[   12.370246] sja1105 spi2.0: port 1 failed to notify tag_8021q VLAN 2113 deletion: -ENOENT
[   12.378466] sja1105 spi2.0: port 2 failed to notify tag_8021q VLAN 1090 deletion: -ENOENT
[   12.386683] sja1105 spi2.0: port 2 failed to notify tag_8021q VLAN 2114 deletion: -ENOENT

Basically switch 1 calls dsa_tag_8021q_unregister, and switch 1's TX and
RX VLANs cannot be found on switch 2's CPU port.

But why would switch 2 even attempt to delete switch 1's TX and RX
tag_8021q VLANs from its CPU port? Well, because we use dsa_broadcast,
and it is supposed that it had added those VLANs in the first place
(because in dsa_port_tag_8021q_vlan_match, all CPU ports match
regardless of their tree index or switch index).

The two trees probe asynchronously, and when switch 1 probed, it called
dsa_broadcast which did not notify the tree of switch 2, because that
didn't probe yet. But during unbind, switch 2's tree _is_ probed, so it
_is_ notified of the deletion.

Before jumping to introduce a synchronization mechanism between the
probing across disjoint switch trees, let's take a step back and see
whether we _need_ to do that in the first place.

The RX and TX VLANs of switch 1 would be needed on switch 2's CPU port
only if switch 1 and 2 were part of a cross-chip bridge. And
dsa_tag_8021q_bridge_join takes care precisely of that (but if probing
was synchronous, the bridge_join would just end up bumping the VLANs'
refcount, because they are already installed by the setup path).

Since by the time the ports are bridged, all DSA trees are already set
up, and we don't need the tag_8021q VLANs of one switch installed on the
other switches during probe time, the answer is that we don't need to
fix the synchronization issue.

So make the setup and teardown code paths call dsa_port_notify, which
notifies only the local tree, and the bridge code paths call
dsa_broadcast, which let the other trees know as well.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Currently this error message does not say a lot:

[   32.693498] DSA: failed to notify tag_8021q VLAN deletion: -ENOENT
[   32.699725] DSA: failed to notify tag_8021q VLAN deletion: -ENOENT
[   32.705931] DSA: failed to notify tag_8021q VLAN deletion: -ENOENT
[   32.712139] DSA: failed to notify tag_8021q VLAN deletion: -ENOENT
[   32.718347] DSA: failed to notify tag_8021q VLAN deletion: -ENOENT
[   32.724554] DSA: failed to notify tag_8021q VLAN deletion: -ENOENT

but in this form, it is immediately obvious (at least to me) what the
problem is, even without further looking at the code:

[   12.345566] sja1105 spi2.0: port 0 failed to notify tag_8021q VLAN 1088 deletion: -ENOENT
[   12.353804] sja1105 spi2.0: port 0 failed to notify tag_8021q VLAN 2112 deletion: -ENOENT
[   12.362019] sja1105 spi2.0: port 1 failed to notify tag_8021q VLAN 1089 deletion: -ENOENT
[   12.370246] sja1105 spi2.0: port 1 failed to notify tag_8021q VLAN 2113 deletion: -ENOENT
[   12.378466] sja1105 spi2.0: port 2 failed to notify tag_8021q VLAN 1090 deletion: -ENOENT
[   12.386683] sja1105 spi2.0: port 2 failed to notify tag_8021q VLAN 2114 deletion: -ENOENT
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

We still have quite a bit more work to do with overall reworking of
the ttm-based dg1 code, but the uapi stuff is now finalized with the
latest pull. So remove that.

This also fixes kerneldoc build warnings because we've included the
same headers in two places, resulting in sphinx complaining about
duplicated symbols. This regression has been created when we moved the
uapi definitions to the real include/uapi/ folder in 727ecd99
("drm/doc/rfc: drop the i915_gem_lmem.h header")

v2: Fix a few references that I missed, the htmldocs build took
forever.
Acked-by: Jason Ekstrand <jason@jlekstrand.net>
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Tested-by Stephen Rothwell <sfr@canb.auug.org.au> (v1)
References: https://lore.kernel.org/dri-devel/20210603193242.1ce99344@canb.auug.org.au/Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Fixes: 727ecd99 ("drm/doc/rfc: drop the i915_gem_lmem.h header")
Cc: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210810142748.1983271-1-daniel.vetter@ffwll.ch
(cherry picked from commit dae2d288)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

The SFC_DONE register lives within the corresponding VD0/VD2/VD4/VD6
forcewake domain and is not accessible if the vdbox in that domain is
fused off and the forcewake is not initialized.

This mistake went unnoticed because until recently we were using the
wrong register offset for the SFC_DONE register; once the register
offset was corrected, we started hitting errors like

  <4> [544.989065] i915 0000:cc:00.0: Uninitialized forcewake domain(s) 0x80 accessed at 0x1ce000

on parts with fused-off vdbox engines.

Fixes: e50dbdbf ("drm/i915/tgl: Add SFC instdone to error state")
Fixes: 9c9c6d0a ("drm/i915: Correct SFC_DONE register offset")
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210806174130.1058960-1-matthew.d.roper@intel.comReviewed-by: José Roberto de Souza <jose.souza@intel.com>
(cherry picked from commit c5589bb5)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
[Changed Fixes tag to match the cherry-picked 82929a21]

ida_alloc_range() may return other than -ENOMEM error code.
Unshadow it in the wwan_create_port().
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Till DISPLAY12 the PIPE_MISC bits 5-7 are used to set the
Dithering BPC, with valid values of 6, 8, 10 BPC.
For ADLP+ these bits are used to set the PORT OUTPUT BPC, with valid
values of: 6, 8, 10, 12 BPC, and need to be programmed whether
dithering is enabled or not.

This patch:
-corrects the bits 5-7 for PIPE MISC register for 12 BPC.
-renames the bits and mask to have generic names for these bits for
dithering bpc and port output bpc.

v3: Added a note for MIPI DSI which uses the PIPE_MISC for readout
for pipe_bpp. (Uma Shankar)

v2: Added 'display' to the subject and fixes tag. (Uma Shankar)

Fixes: 756f85cf ("drm/i915/bdw: Broadwell has PIPEMISC")
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com> (v1)
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: intel-gfx@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v3.13+
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210811051857.109723-1-ankit.k.nautiyal@intel.com
(cherry picked from commit 70418a68)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>