Time-sensitive networking code needs to work with PTP times expressed in
nanoseconds, and with packet transmission times expressed in
picoseconds, since those would be fractional at higher than gigabit
speed when expressed in nanoseconds.

Convert the existing uses in tc-taprio and the ocelot/felix DSA driver
to a PSEC_PER_NSEC macro. This macro is placed in include/linux/time64.h
as opposed to its relatives (PSEC_PER_SEC etc) from include/vdso/time64.h
because the vDSO library does not (yet) need/use it.

Cc: Andy Lutomirski <luto@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com> # for the vDSO parts
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Currently, sending a packet into a time gate too small for it (or always
closed) causes the queue system to hold the frame forever. Even worse,
this frame isn't subject to aging either, because for that to happen, it
needs to be scheduled for transmission in the first place. But the frame
will consume buffer memory and frame references while it is forever held
in the queue system.

Before commit a4ae997a ("net: mscc: ocelot: initialize watermarks to
sane defaults"), this behavior was somewhat subtle, as the switch had a
more intricately tuned default watermark configuration out of reset,
which did not allow any single port and tc to consume the entire switch
buffer space. Nonetheless, the held frames are still there, and they
reduce the total backplane capacity of the switch.

However, after the aforementioned commit, the behavior can be very
clearly seen, since we deliberately allow each {port, tc} to consume the
entire shared buffer of the switch minus the reservations (and we
disable all reservations by default). That is to say, we allow a
permanently closed tc-taprio gate to hang the entire switch.

A careful inspection of the documentation shows that the QSYS:Q_MAX_SDU
per-port-tc registers serve 2 purposes: one is for guard band calculation
(when zero, this falls back to QSYS:PORT_MAX_SDU), and the other is to
enable oversized frame dropping (when non-zero).

Currently the QSYS:Q_MAX_SDU registers are all zero, so oversized frame
dropping is disabled. The goal of the change is to enable it seamlessly.
For that, we need to hook into the MTU change, tc-taprio change, and
port link speed change procedures, since we depend on these variables.

Frames are not dropped on egress due to a queue system oversize
condition, instead that egress port is simply excluded from the mask of
valid destination ports for the packet. If there are no destination
ports at all, the ingress counter that increments is the generic
"drop_tail" in ethtool -S.

The issue exists in various forms since the tc-taprio offload was introduced.

Fixes: de143c0e ("net: dsa: felix: Configure Time-Aware Scheduler via taprio offload")
Reported-by: Richie Pearn <richard.pearn@nxp.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

In vsc9959_tas_clock_adjust(), the INIT_GATE_STATE field is not changed,
only the ENABLE field. Similarly for the disabling of the time-aware
shaper in vsc9959_qos_port_tas_set().

To reflect this, keep the QSYS_TAG_CONFIG_INIT_GATE_STATE_M mask out of
the read-modify-write procedure to make it clearer what is the intention
of the code.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

In a future change we will need to remember the entire tc-taprio config
on all ports rather than just the base time, so use the
taprio_offload_get() helper function to replace ocelot_port->base_time
with ocelot_port->taprio.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

These are required by certain network profiling applications in order to
measure delays.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Reviewed-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Link: https://lore.kernel.org/r/20220629181335.3800821-1-vladimir.oltean@nxp.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

of_parse_phandle() will increase the refcount of 'pcs_node', so add
of_node_put() before return from a5psw_pcs_get().

Fixes: 888cdb89 ("net: dsa: rzn1-a5psw: add Renesas RZ/N1 advanced 5 port switch driver")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220630014153.1888811-1-yangyingliang@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Delete the redundant word 'new'.
Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Link: https://lore.kernel.org/r/20220629131330.16812-1-yuanjilin@cdjrlc.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Delete the redundant word 'a'.
Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Link: https://lore.kernel.org/r/20220629130013.3273-1-yuanjilin@cdjrlc.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Delete the redundant word 'a'.
Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Link: https://lore.kernel.org/r/20220629125441.62420-1-yuanjilin@cdjrlc.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Delete the redundant word 'the'.
Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Link: https://lore.kernel.org/r/20220629123756.48860-1-yuanjilin@cdjrlc.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Delete the redundant word 'slot'.
Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Link: https://lore.kernel.org/r/20220629092856.35678-1-yuanjilin@cdjrlc.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Tony Nguyen says:

====================
1GbE Intel Wired LAN Driver Updates 2022-06-30

This series contains updates to misc Intel drivers.

Jesse removes unused macros from e100, e1000, e1000e, i40e, iavf, igc,
ixgb, ixgbe, and ixgbevf drivers.

Jiang Jian removes repeated words from ixgbe, fm10k, igb, and ixgbe
drivers.

Jilin Yuan removes repeated words from e1000, e1000e, fm10k, i40e, iavf,
igb, igbvf, igc, ixgbevf, and ice drivers.

* '1GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue:
  intel/ice:fix repeated words in comments
  intel/ixgbevf:fix repeated words in comments
  intel/igc:fix repeated words in comments
  intel/igbvf:fix repeated words in comments
  intel/igb:fix repeated words in comments
  intel/iavf:fix repeated words in comments
  intel/i40e:fix repeated words in comments
  intel/fm10k:fix repeated words in comments
  intel/e1000e:fix repeated words in comments
  intel/e1000:fix repeated words in comments
  ixgbe: drop unexpected word 'for' in comments
  igb: remove unexpected word "the"
  fm10k: remove unexpected word "the"
  ixgbe: remove unexpected word "the"
  intel: remove unused macros
====================

Link: https://lore.kernel.org/r/20220630213208.3034968-1-anthony.l.nguyen@intel.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/microchip/sparx5/sparx5_switchdev.c
  9c5de246 ("net: sparx5: mdb add/del handle non-sparx5 devices")
  fbb89d02 ("net: sparx5: Allow mdb entries to both CPU and ports")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Pull networking fixes from Jakub Kicinski:
 "Including fixes from netfilter.

  Current release - new code bugs:

   - clear msg_get_inq in __sys_recvfrom() and __copy_msghdr_from_user()

   - mptcp:
      - invoke MP_FAIL response only when needed
      - fix shutdown vs fallback race
      - consistent map handling on failure

   - octeon_ep: use bitwise AND

  Previous releases - regressions:

   - tipc: move bc link creation back to tipc_node_create, fix NPD

  Previous releases - always broken:

   - tcp: add a missing nf_reset_ct() in 3WHS handling to prevent socket
     buffered skbs from keeping refcount on the conntrack module

   - ipv6: take care of disable_policy when restoring routes

   - tun: make sure to always disable and unlink NAPI instances

   - phy: don't trigger state machine while in suspend

   - netfilter: nf_tables: avoid skb access on nf_stolen

   - asix: fix "can't send until first packet is send" issue

   - usb: asix: do not force pause frames support

   - nxp-nci: don't issue a zero length i2c_master_read()

  Misc:

   - ncsi: allow use of proper "mellanox" DT vendor prefix

   - act_api: add a message for user space if any actions were already
     flushed before the error was hit"

* tag 'net-5.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (55 commits)
  net: dsa: felix: fix race between reading PSFP stats and port stats
  selftest: tun: add test for NAPI dismantle
  net: tun: avoid disabling NAPI twice
  net: sparx5: mdb add/del handle non-sparx5 devices
  net: sfp: fix memory leak in sfp_probe()
  mlxsw: spectrum_router: Fix rollback in tunnel next hop init
  net: rose: fix UAF bugs caused by timer handler
  net: usb: ax88179_178a: Fix packet receiving
  net: bonding: fix use-after-free after 802.3ad slave unbind
  ipv6: fix lockdep splat in in6_dump_addrs()
  net: phy: ax88772a: fix lost pause advertisement configuration
  net: phy: Don't trigger state machine while in suspend
  usbnet: fix memory allocation in helpers
  selftests net: fix kselftest net fatal error
  NFC: nxp-nci: don't print header length mismatch on i2c error
  NFC: nxp-nci: Don't issue a zero length i2c_master_read()
  net: tipc: fix possible refcount leak in tipc_sk_create()
  nfc: nfcmrvl: Fix irq_of_parse_and_map() return value
  net: ipv6: unexport __init-annotated seg6_hmac_net_init()
  ipv6/sit: fix ipip6_tunnel_get_prl return value
  ...

A regression has been reported by Nicolas Boichat, found while using the
copy_file_range syscall to copy a tracefs file.

Before commit 5dae222a ("vfs: allow copy_file_range to copy across
devices") the kernel would return -EXDEV to userspace when trying to
copy a file across different filesystems.  After this commit, the
syscall doesn't fail anymore and instead returns zero (zero bytes
copied), as this file's content is generated on-the-fly and thus reports
a size of zero.

Another regression has been reported by He Zhe - the assertion of
WARN_ON_ONCE(ret == -EOPNOTSUPP) can be triggered from userspace when
copying from a sysfs file whose read operation may return -EOPNOTSUPP.

Since we do not have test coverage for copy_file_range() between any two
types of filesystems, the best way to avoid these sort of issues in the
future is for the kernel to be more picky about filesystems that are
allowed to do copy_file_range().

This patch restores some cross-filesystem copy restrictions that existed
prior to commit 5dae222a ("vfs: allow copy_file_range to copy across
devices"), namely, cross-sb copy is not allowed for filesystems that do
not implement ->copy_file_range().

Filesystems that do implement ->copy_file_range() have full control of
the result - if this method returns an error, the error is returned to
the user.  Before this change this was only true for fs that did not
implement the ->remap_file_range() operation (i.e.  nfsv3).

Filesystems that do not implement ->copy_file_range() still fall-back to
the generic_copy_file_range() implementation when the copy is within the
same sb.  This helps the kernel can maintain a more consistent story
about which filesystems support copy_file_range().

nfsd and ksmbd servers are modified to fall-back to the
generic_copy_file_range() implementation in case vfs_copy_file_range()
fails with -EOPNOTSUPP or -EXDEV, which preserves behavior of
server-side-copy.

fall-back to generic_copy_file_range() is not implemented for the smb
operation FSCTL_DUPLICATE_EXTENTS_TO_FILE, which is arguably a correct
change of behavior.

Fixes: 5dae222a ("vfs: allow copy_file_range to copy across devices")
Link: https://lore.kernel.org/linux-fsdevel/20210212044405.4120619-1-drinkcat@chromium.org/
Link: https://lore.kernel.org/linux-fsdevel/CANMq1KDZuxir2LM5jOTm0xx+BnvW=ZmpsG47CyHFJwnw7zSX6Q@mail.gmail.com/
Link: https://lore.kernel.org/linux-fsdevel/20210126135012.1.If45b7cdc3ff707bc1efa17f5366057d60603c45f@changeid/
Link: https://lore.kernel.org/linux-fsdevel/20210630161320.29006-1-lhenriques@suse.de/Reported-by: Nicolas Boichat <drinkcat@chromium.org>
Reported-by: kernel test robot <oliver.sang@intel.com>
Signed-off-by: Luis Henriques <lhenriques@suse.de>
Fixes: 64bf5ff5 ("vfs: no fallback for ->copy_file_range")
Link: https://lore.kernel.org/linux-fsdevel/20f17f64-88cb-4e80-07c1-85cb96c83619@windriver.com/Reported-by: He Zhe <zhe.he@windriver.com>
Tested-by: Namjae Jeon <linkinjeon@kernel.org>
Tested-by: Luis Henriques <lhenriques@suse.de>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Delete the redundant word 'a'.
Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

The current link mode of the phylink instance may not require an
attached PCS. However, phylink_major_config() unconditionally
dereferences this potentially NULL pointer when restarting the link poll
timer, which will panic the kernel.

Fix the problem by checking whether a PCS exists in phylink_pcs_poll_start(),
otherwise do nothing. The code prior to the blamed patch also only
looked at pcs->poll within an "if (pcs)" block.

Fixes: bfac8c49 ("net: phylink: disable PCS polling over major configuration")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Tested-by: Gerhard Engleder <gerhard@engleder-embedded.com>
Tested-by: Michael Walle <michael@walle.cc> # on kontron-kbox-a-230-ls
Tested-by: Nicolas Ferre <nicolas.ferre@microchip.com> # on sam9x60ek
Link: https://lore.kernel.org/r/20220629193358.4007923-1-vladimir.oltean@nxp.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Both PSFP stats and the port stats read by ocelot_check_stats_work() are
indirectly read through the same mechanism - write to STAT_CFG:STAT_VIEW,
read from SYS:STAT:CNT[n].

It's just that for port stats, we write STAT_VIEW with the index of the
port, and for PSFP stats, we write STAT_VIEW with the filter index.

So if we allow them to run concurrently, ocelot_check_stats_work() may
change the view from vsc9959_psfp_counters_get(), and vice versa.

Fixes: 7d4b564d ("net: dsa: felix: support psfp filter on vsc9959")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/r/20220629183007.3808130-1-vladimir.oltean@nxp.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Being lazy does not pay, add the test for various
ordering of tun queue close / detach / destroy.

Link: https://lore.kernel.org/r/20220629181911.372047-2-kuba@kernel.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Eric reports that syzbot made short work out of my speculative
fix. Indeed when queue gets detached its tfile->tun remains,
so we would try to stop NAPI twice with a detach(), close()
sequence.

Alternative fix would be to move tun_napi_disable() to
tun_detach_all() and let the NAPI run after the queue
has been detached.

Fixes: a8fc8cb5 ("net: tun: stop NAPI when detaching queues")
Reported-by: syzbot <syzkaller@googlegroups.com>
Reported-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20220629181911.372047-1-kuba@kernel.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

When adding/deleting mdb entries on other net_devices, eg., tap
interfaces, it should not crash.

Fixes: 3bacfccd ("net: sparx5: Add mdb handlers")
Signed-off-by: Casper Andersson <casper.casan@gmail.com>
Reviewed-by: Steen Hegelund <Steen.Hegelund@microchip.com>
Link: https://lore.kernel.org/r/20220630122226.316812-1-casper.casan@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Delete the redundant word 'slot'.
Delete the redundant word 'we'.
Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

Delete the redundant word 'frames'.
Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

Delete the redundant word 'on'.
Delete the redundant word 'slot'.
Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

Delete the redundant word 'frames'.
Delete the redundant word 'set'.
Delete the redundant word 'slot'.
Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

Delete the redundant word 'a'.
Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

Delete the redundant word 'a'.
Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

Delete the redundant word 'by'.
Delete the redundant word 'a'.
Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

Delete the redundant word 'frames'.
Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

Delete the redundant word 'frames'.
Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

there is an unexpected word 'for' in the comments that need to be dropped

file - drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
line - 5164

 * ixgbe_lpbthresh - calculate low water mark for for flow control

changed to:

 * ixgbe_lpbthresh - calculate low water mark for flow control
Signed-off-by: Jiang Jian <jiangjian@cdjrlc.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

there is an unexpected word "the" in the comments that need to be removed
Signed-off-by: Jiang Jian <jiangjian@cdjrlc.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

there is an unexpected word "the" in the comments that need to be removed
Signed-off-by: Jiang Jian <jiangjian@cdjrlc.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

there is an unexpected word "the" in the comments that need to be removed
Signed-off-by: Jiang Jian <jiangjian@cdjrlc.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

Pull rdma fixes from Jason Gunthorpe:
 "Three minor bug fixes:

   - qedr not setting the QP timeout properly toward userspace

   - Memory leak on error path in ib_cm

   - Divide by 0 in RDMA interrupt moderation"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  linux/dim: Fix divide by 0 in RDMA DIM
  RDMA/cm: Fix memory leak in ib_cm_insert_listen
  RDMA/qedr: Fix reporting QP timeout attribute

Pull fanotify fix from Jan Kara:
 "A fix for recently added fanotify API to have stricter checks and
  refuse some invalid flag combinations to make our life easier in the
  future"

* tag 'fsnotify_for_v5.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  fanotify: refine the validation checks on non-dir inode mask

Pull crypto fix from Herbert Xu:
 "Fix a regression that breaks the ccp driver"

* tag 'v5.19-p3' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: ccp - Fix device IRQ counting by using platform_irq_count()

As found by the compile option -Wunused-macros, remove these macros
that are never used by the code.
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

Yuwei Wang says:

====================
net, neigh: introduce interval_probe_time for periodic probe

This series adds a new option `interval_probe_time_ms` in net, neigh
for periodic probe, and add a limitation to prevent it set to 0
====================

Link: https://lore.kernel.org/r/20220629084832.2842973-1-wangyuweihx@gmail.comSigned-off-by: Paolo Abeni <pabeni@redhat.com>

commit ed6cd6a1 ("net, neigh: Set lower cap for neigh_managed_work rearming")
fixed a case when DELAY_PROBE_TIME is configured to 0, the processing of the
system work queue hog CPU to 100%, and further more we should introduce
a new option used by periodic probe
Signed-off-by: Yuwei Wang <wangyuweihx@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>