Kalle Valo says:
====================
wireless-next patches for v6.5
The second pull request for v6.5. We have support for three new
Realtek chipsets, all from different generations. Shows how active
Realtek development is right now, even older generations are being
worked on.
Note: We merged wireless into wireless-next to avoid complex conflicts
between the trees.
Major changes:
rtl8xxxu
- RTL8192FU support
rtw89
- RTL8851BE support
rtw88
- RTL8723DS support
ath11k
- Multiple Basic Service Set Identifier (MBSSID) and Enhanced MBSSID
Advertisement (EMA) support in AP mode
iwlwifi
- support for segmented PNVM images and power tables
- new vendor entries for PPAG (platform antenna gain) feature
cfg80211/mac80211
- more Multi-Link Operation (MLO) support such as hardware restart
- fixes for a potential work/mutex deadlock and with it beginnings of
the previously discussed locking simplifications
* tag 'wireless-next-2023-06-09' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (162 commits)
wifi: rtlwifi: remove misused flag from HAL data
wifi: rtlwifi: remove unused dualmac control leftovers
wifi: rtlwifi: remove unused timer and related code
wifi: rsi: Do not set MMC_PM_KEEP_POWER in shutdown
wifi: rsi: Do not configure WoWlan in shutdown hook if not enabled
wifi: brcmfmac: Detect corner error case earlier with log
wifi: rtw89: 8852c: update RF radio A/B parameters to R63
wifi: rtw89: 8852c: update TX power tables to R63 with 6 GHz power type (3 of 3)
wifi: rtw89: 8852c: update TX power tables to R63 with 6 GHz power type (2 of 3)
wifi: rtw89: 8852c: update TX power tables to R63 with 6 GHz power type (1 of 3)
wifi: rtw89: process regulatory for 6 GHz power type
wifi: rtw89: regd: update regulatory map to R64-R40
wifi: rtw89: regd: judge 6 GHz according to chip and BIOS
wifi: rtw89: refine clearing supported bands to check 2/5 GHz first
wifi: rtw89: 8851b: configure CRASH_TRIGGER feature for 8851B
wifi: rtw89: set TX power without precondition during setting channel
wifi: rtw89: debug: txpwr table access only valid page according to chip
wifi: rtw89: 8851b: enable hw_scan support
wifi: cfg80211: move scan done work to wiphy work
wifi: cfg80211: move sched scan stop to wiphy work
...
====================
Link: https://lore.kernel.org/r/87bkhohkbg.fsf@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Broadcom PHYs have two LEDs selector registers which allow us to control
the LED assignment, including how to turn them on/off.
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
These registers are common to most PHYs and are not specific to the
BCM5482, renamed the constants accordingly, no functional change.
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Replace generic_splice_sendpage() + splice_from_pipe + pipe_to_sendpage()
with a net-specific handler, splice_to_socket(), that calls sendmsg() with
MSG_SPLICE_PAGES set instead of calling ->sendpage().
MSG_MORE is used to indicate if the sendmsg() is expected to be followed
with more data.
This allows multiple pipe-buffer pages to be passed in a single call in a
BVEC iterator, allowing the processing to be pushed down to a loop in the
protocol driver. This helps pave the way for passing multipage folios down
too.
Protocols that haven't been converted to handle MSG_SPLICE_PAGES yet should
just ignore it and do a normal sendmsg() for now - although that may be a
bit slower as it may copy everything.
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
cc: Jens Axboe <axboe@kernel.dk>
cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
It is necessary to allow MSG_SENDPAGE_* to be passed into ->sendmsg() to
allow sendmsg(MSG_SPLICE_PAGES) to replace ->sendpage(). Unblocking them
in the network protocol, however, allows these flags to be passed in by
userspace too[1].
Fix this by marking MSG_SENDPAGE_NOPOLICY, MSG_SENDPAGE_NOTLAST and
MSG_SENDPAGE_DECRYPTED as internal flags, which causes sendmsg() to object
if they are passed to sendmsg() by userspace. Network protocol ->sendmsg()
implementations can then allow them through.
Note that it should be possible to remove MSG_SENDPAGE_NOTLAST once
sendpage is removed as a whole slew of pages will be passed in in one go by
splice through sendmsg, with MSG_MORE being set if it has more data waiting
in the pipe.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Chuck Lever <chuck.lever@oracle.com>
cc: Boris Pismenny <borisp@nvidia.com>
cc: John Fastabend <john.fastabend@gmail.com>
cc: Jens Axboe <axboe@kernel.dk>
cc: Matthew Wilcox <willy@infradead.org>
Link: https://lore.kernel.org/r/20230526181338.03a99016@kernel.org/ [1]
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Saeed Mahameed says:
====================
mlx5-updates-2023-06-06
1) Support 4 ports VF LAG, part 2/2
2) Few extra trivial cleanup patches
Shay Drory Says:
================
Support 4 ports VF LAG, part 2/2
This series continues the series[1] "Support 4 ports VF LAG, part1/2".
This series adds support for 4 ports VF LAG (single FDB E-Switch).
This series of patches refactoring LAG code that make assumptions
about VF LAG supporting only two ports and then enable 4 ports VF LAG.
Patch 1:
- Fix for ib rep code
Patches 2-5:
- Refactors LAG layer.
Patches 6-7:
- Block LAG types which doesn't support 4 ports.
Patch 8:
- Enable 4 ports VF LAG.
This series specifically allows HCAs with 4 ports to create a VF LAG
with only 4 ports. It is not possible to create a VF LAG with 2 or 3
ports using HCAs that have 4 ports.
Currently, the Merged E-Switch feature only supports HCAs with 2 ports.
However, upcoming patches will introduce support for HCAs with 4 ports.
In order to activate VF LAG a user can execute:
devlink dev eswitch set pci/0000:08:00.0 mode switchdev
devlink dev eswitch set pci/0000:08:00.1 mode switchdev
devlink dev eswitch set pci/0000:08:00.2 mode switchdev
devlink dev eswitch set pci/0000:08:00.3 mode switchdev
ip link add name bond0 type bond
ip link set dev bond0 type bond mode 802.3ad
ip link set dev eth2 master bond0
ip link set dev eth3 master bond0
ip link set dev eth4 master bond0
ip link set dev eth5 master bond0
Where eth2, eth3, eth4 and eth5 are net-interfaces of pci/0000:08:00.0
pci/0000:08:00.1 pci/0000:08:00.2 pci/0000:08:00.3 respectively.
User can verify LAG state and type via debugfs:
/sys/kernel/debug/mlx5/0000\:08\:00.0/lag/state
/sys/kernel/debug/mlx5/0000\:08\:00.0/lag/type
[1]
https://lore.kernel.org/netdev/20230601060118.154015-1-saeed@kernel.org/T/#mf1d2083780970ba277bfe721554d4925f03f36d1
================
* tag 'mlx5-updates-2023-06-06' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux:
net/mlx5e: simplify condition after napi budget handling change
mlx5/core: E-Switch, Allocate ECPF vport if it's an eswitch manager
net/mlx5: Skip inline mode check after mlx5_eswitch_enable_locked() failure
net/mlx5e: TC, refactor access to hash key
net/mlx5e: Remove RX page cache leftovers
net/mlx5e: Expose catastrophic steering error counters
net/mlx5: Enable 4 ports VF LAG
net/mlx5: LAG, block multiport eswitch LAG in case ldev have more than 2 ports
net/mlx5: LAG, block multipath LAG in case ldev have more than 2 ports
net/mlx5: LAG, change mlx5_shared_fdb_supported() to static
net/mlx5: LAG, generalize handling of shared FDB
net/mlx5: LAG, check if all eswitches are paired for shared FDB
{net/RDMA}/mlx5: introduce lag_for_each_peer
RDMA/mlx5: Free second uplink ib port
====================
Link: https://lore.kernel.org/r/20230607210410.88209-1-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
We no longer need to export lynx_pcs_create() for drivers to use as we
now have all the functionality we need in the two new creation helpers.
Remove the export and prototype, and make it static.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add a helper to create a lynx PCS from a fwnode handle.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
lynx_get_mdio_device() is no longer necessary, let's remove it so the
lynx PCS code is always managing the lifetime of the mdiodev.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Cross-merge networking fixes after downstream PR.
Conflicts:
net/sched/sch_taprio.c
d636fc5dd6 ("net: sched: add rcu annotations around qdisc->qdisc_sleeping")
dced11ef84 ("net/sched: taprio: don't overwrite "sch" variable in taprio_dump_class_stats()")
net/ipv4/sysctl_net_ipv4.c
e209fee411 ("net/ipv4: ping_group_range: allow GID from 2147483648 to 4294967294")
ccce324dab ("tcp: make the first N SYN RTO backoffs linear")
https://lore.kernel.org/all/20230605100816.08d41a7b@canb.auug.org.au/
No adjacent changes.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add basic support for XPCS using 10GBASE-R interface. This mode will
be extended to use interrupt, so set pcs.poll false. And avoid soft
reset so that the device using this mode is in the default configuration.
Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Add generated_pkt_steering_fail and handled_pkt_steering_fail to devlink
heatlth reporter.
generated_pkt_steering_fail indicates the number of packets dropped due to
illegal steering operation within the vport steering domain.
handled_pkt_steering_fail indicates the number of packets dropped due to
illegal steering operation, originated by the vport.
Also, update devlink reporter functionality documentation with the newly
exposed counters.
Signed-off-by: Lama Kayal <lkayal@nvidia.com>
Reviewed-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Introduce a generic APIs to iterate over all the devices which are part
of the LAG. This API replace mlx5_lag_get_peer_mdev() which retrieve
only a single peer device from the lag.
Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Add READ_ONCE()/WRITE_ONCE() on accesses to the sock flow table.
This also prevents a (smart ?) compiler to remove the condition in:
if (table->ents[index] != newval)
table->ents[index] = newval;
We need the condition to avoid dirtying a shared cache line.
Fixes: fec5e652e5 ("rfs: Receive Flow Steering")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull x86 platform driver fixes from Hans de Goede:
- various Microsoft Surface support fixes
- one fix for the INT3472 driver
* tag 'platform-drivers-x86-v6.4-4' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
platform/x86: int3472: Avoid crash in unregistering regulator gpio
platform/surface: aggregator_tabletsw: Add support for book mode in POS subsystem
platform/surface: aggregator_tabletsw: Add support for book mode in KIP subsystem
platform/surface: aggregator: Allow completion work-items to be executed in parallel
platform/surface: aggregator: Make to_ssam_device_driver() respect constness
Andrzej Hajda says:
====================
drm/i915: use ref_tracker library for tracking wakerefs
This is reviewed series of ref_tracker patches, ready to merge
via network tree, rebased on net-next/main.
i915 patches will be merged later via intel-gfx tree.
====================
Merge on top of an -rc tag in case it's needed in another tree.
Link: https://lore.kernel.org/r/20230224-track_gt-v9-0-5b47a33f55d1@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Similar to stack_(depot|trace)_snprint the patch
adds helper to printing stats to memory buffer.
It will be helpful in case of debugfs.
Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In case the library is tracking busy subsystem, simply
printing stack for every active reference will spam log
with long, hard to read, redundant stack traces. To improve
readabilty following changes have been made:
- reports are printed per stack_handle - log is more compact,
- added display name for ref_tracker_dir - it will differentiate
multiple subsystems,
- stack trace is printed indented, in the same printk call,
- info about dropped references is printed as well.
Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
To have reliable detection of leaks, caller must be able to check under
the same lock both: tracked counter and the leaks. dir.lock is natural
candidate for such lock and unlocked print helper can be called with this
lock taken.
As a bonus we can reuse this helper in ref_tracker_dir_exit.
Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
There are now no callers of xpcs_create(), so let's remove it from
public view to discourage future direct usage.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Now that we can easily create a mdio-device that represents a
memory-mapped device that exposes an MDIO-like register layout, we don't
need the Altera TSE PCS anymore, since we can use the Lynx PCS instead.
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There exists several examples today of devices that embed an ethernet
PHY or PCS directly inside an SoC. In this situation, either the device
is controlled through a vendor-specific register set, or sometimes
exposes the standard 802.3 registers that are typically accessed over
MDIO.
As phylib and phylink are designed to use mdiodevices, this driver
allows creating a virtual MDIO bus, that translates mdiodev register
accesses to regmap accesses.
The reason we use regmap is because there are at least 3 such devices
known today, 2 of them are Altera TSE PCS's, memory-mapped, exposed
with a 4-byte stride in stmmac's dwmac-socfpga variant, and a 2-byte
stride in altera-tse. The other one (nxp,sja1110-base-tx-mdio) is
exposed over SPI.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull char/misc driver fixes from Greg KH:
"Here are a bunch of tiny char/misc/other driver fixes for 6.4-rc5 that
resolve a number of reported issues. Included in here are:
- iio driver fixes
- fpga driver fixes
- test_firmware bugfixes
- fastrpc driver tiny bugfixes
- MAINTAINERS file updates for some subsystems
All of these have been in linux-next this past week with no reported
issues"
* tag 'char-misc-6.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (34 commits)
test_firmware: fix the memory leak of the allocated firmware buffer
test_firmware: fix a memory leak with reqs buffer
test_firmware: prevent race conditions by a correct implementation of locking
firmware_loader: Fix a NULL vs IS_ERR() check
MAINTAINERS: Vaibhav Gupta is the new ipack maintainer
dt-bindings: fpga: replace Ivan Bornyakov maintainership
MAINTAINERS: update Microchip MPF FPGA reviewers
misc: fastrpc: reject new invocations during device removal
misc: fastrpc: return -EPIPE to invocations on device removal
misc: fastrpc: Reassign memory ownership only for remote heap
misc: fastrpc: Pass proper scm arguments for secure map request
iio: imu: inv_icm42600: fix timestamp reset
iio: adc: ad_sigma_delta: Fix IRQ issue by setting IRQ_DISABLE_UNLAZY flag
dt-bindings: iio: adc: renesas,rcar-gyroadc: Fix adi,ad7476 compatible value
iio: dac: mcp4725: Fix i2c_master_send() return value handling
iio: accel: kx022a fix irq getting
iio: bu27034: Ensure reset is written
iio: dac: build ad5758 driver when AD5758 is selected
iio: addac: ad74413: fix resistance input processing
iio: light: vcnl4035: fixed chip ID check
...
Pull USB fixes from Greg KH:
"Here are some USB driver and core fixes for 6.4-rc5. Most of these are
tiny driver fixes, including:
- udc driver bugfix
- f_fs gadget driver bugfix
- cdns3 driver bugfix
- typec bugfixes
But the "big" thing in here is a fix yet-again for how the USB buffers
are handled from userspace when dealing with DMA issues. The changes
were discussed a lot, and tested a lot, on the list, and acked by the
relevant mm maintainers and have been in linux-next all this past week
with no reported problems"
* tag 'usb-6.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: typec: tps6598x: Fix broken polling mode after system suspend/resume
mm: page_table_check: Ensure user pages are not slab pages
mm: page_table_check: Make it dependent on EXCLUSIVE_SYSTEM_RAM
usb: usbfs: Use consistent mmap functions
usb: usbfs: Enforce page requirements for mmap
dt-bindings: usb: snps,dwc3: Fix "snps,hsphy_interface" type
usb: gadget: udc: fix NULL dereference in remove()
usb: gadget: f_fs: Add unbind event before functionfs_unbind
usb: cdns3: fix NCM gadget RX speed 20x slow than expection at iMX8QM
Dan Carpenter reported a signedness bug in genphy_loopback(). Andrew
reports that:
"It is common to get this wrong in general with PHY drivers. Dan
regularly posts fixes like this soon after a PHY driver patch it
merged. I really wish we could somehow get the compiler to warn when
the result from phy_read() is stored into a unsigned type. It would
save Dan a lot of work."
Let's make phy_read*_poll_timeout() immune to further issues when "val"
is an unsigned type by storing the read function's result in a signed
int as well as "val", and using the signed variable both to check for
an error and for propagating that error to the caller.
The advantage of this method is we don't change where the cast from
the signed return code to the user's variable occurs - so users will
see no change.
Previously Heiner changed phy_read_poll_timeout() to check for an error
before evaluating the user supplied condition, but didn't update
phy_read_mmd_poll_timeout(). Make that change there too.
Link: https://lore.kernel.org/r/d7bb312e-2428-45f6-b9b3-59ba544e8b94@kili.mountain
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1q4kX6-00BNuM-Mx@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Pull nfsd fixes from Chuck Lever:
- Two minor bug fixes
* tag 'nfsd-6.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
nfsd: fix double fget() bug in __write_ports_addfd()
nfsd: make a copy of struct iattr before calling notify_change
Pull EFI fixes from Ard Biesheuvel:
"A few minor fixes for EFI, one of which fixes the reported boot
regression when booting x86 kernels using the BIOS based loader built
into the hypervisor framework on macOS.
- fix harmless warning in zboot code on 'make clean'
- add some missing prototypes
- fix boot regressions triggered by PE/COFF header image minor
version bump"
* tag 'efi-fixes-for-v6.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
efi: Bump stub image version for macOS HVF compatibility
efi: fix missing prototype warnings
efi/libstub: zboot: Avoid eager evaluation of objcopy flags
Pull networking fixes from Jakub Kicinski:
"Happy Wear a Dress Day.
Fairly standard-sized batch of fixes, accounting for the lack of
sub-tree submissions this week. The mlx5 IRQ fixes are notable, people
were complaining about that. No fires burning.
Current release - regressions:
- eth: mlx5e:
- multiple fixes for dynamic IRQ allocation
- prevent encap offload when neigh update is running
- eth: mana: fix perf regression: remove rx_cqes, tx_cqes counters
Current release - new code bugs:
- eth: mlx5e: DR, add missing mutex init/destroy in pattern manager
Previous releases - always broken:
- tcp: deny tcp_disconnect() when threads are waiting
- sched: prevent ingress Qdiscs from getting installed in random
locations in the hierarchy and moving around
- sched: flower: fix possible OOB write in fl_set_geneve_opt()
- netlink: fix NETLINK_LIST_MEMBERSHIPS length report
- udp6: fix race condition in udp6_sendmsg & connect
- tcp: fix mishandling when the sack compression is deferred
- rtnetlink: validate link attributes set at creation time
- mptcp: fix connect timeout handling
- eth: stmmac: fix call trace when stmmac_xdp_xmit() is invoked
- eth: amd-xgbe: fix the false linkup in xgbe_phy_status
- eth: mlx5e:
- fix corner cases in internal buffer configuration
- drain health before unregistering devlink
- usb: qmi_wwan: set DTR quirk for BroadMobi BM818
Misc:
- tcp: return user_mss for TCP_MAXSEG in CLOSE/LISTEN state if
user_mss set"
* tag 'net-6.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (71 commits)
mptcp: fix active subflow finalization
mptcp: add annotations around sk->sk_shutdown accesses
mptcp: fix data race around msk->first access
mptcp: consolidate passive msk socket initialization
mptcp: add annotations around msk->subflow accesses
mptcp: fix connect timeout handling
rtnetlink: add the missing IFLA_GRO_ tb check in validate_linkmsg
rtnetlink: move IFLA_GSO_ tb check to validate_linkmsg
rtnetlink: call validate_linkmsg in rtnl_create_link
ice: recycle/free all of the fragments from multi-buffer frame
net: phy: mxl-gpy: extend interrupt fix to all impacted variants
net: renesas: rswitch: Fix return value in error path of xmit
net: dsa: mv88e6xxx: Increase wait after reset deactivation
net: ipa: Use correct value for IPA_STATUS_SIZE
tcp: fix mishandling when the sack compression is deferred.
net/sched: flower: fix possible OOB write in fl_set_geneve_opt()
sfc: fix error unwinds in TC offload
net/mlx5: Read embedded cpu after init bit cleared
net/mlx5e: Fix error handling in mlx5e_refresh_tirs
net/mlx5: Ensure af_desc.mask is properly initialized
...
When switching from kthreads to vhost_tasks two bugs were added:
1. The vhost worker tasks's now show up as processes so scripts doing
ps or ps a would not incorrectly detect the vhost task as another
process. 2. kthreads disabled freeze by setting PF_NOFREEZE, but
vhost tasks's didn't disable or add support for them.
To fix both bugs, this switches the vhost task to be thread in the
process that does the VHOST_SET_OWNER ioctl, and has vhost_worker call
get_signal to support SIGKILL/SIGSTOP and freeze signals. Note that
SIGKILL/STOP support is required because CLONE_THREAD requires
CLONE_SIGHAND which requires those 2 signals to be supported.
This is a modified version of the patch written by Mike Christie
<michael.christie@oracle.com> which was a modified version of patch
originally written by Linus.
Much of what depended upon PF_IO_WORKER now depends on PF_USER_WORKER.
Including ignoring signals, setting up the register state, and having
get_signal return instead of calling do_group_exit.
Tidied up the vhost_task abstraction so that the definition of
vhost_task only needs to be visible inside of vhost_task.c. Making
it easier to review the code and tell what needs to be done where.
As part of this the main loop has been moved from vhost_worker into
vhost_task_fn. vhost_worker now returns true if work was done.
The main loop has been updated to call get_signal which handles
SIGSTOP, freezing, and collects the message that tells the thread to
exit as part of process exit. This collection clears
__fatal_signal_pending. This collection is not guaranteed to
clear signal_pending() so clear that explicitly so the schedule()
sleeps.
For now the vhost thread continues to exist and run work until the
last file descriptor is closed and the release function is called as
part of freeing struct file. To avoid hangs in the coredump
rendezvous and when killing threads in a multi-threaded exec. The
coredump code and de_thread have been modified to ignore vhost threads.
Remvoing the special case for exec appears to require teaching
vhost_dev_flush how to directly complete transactions in case
the vhost thread is no longer running.
Removing the special case for coredump rendezvous requires either the
above fix needed for exec or moving the coredump rendezvous into
get_signal.
Fixes: 6e890c5d50 ("vhost: use vhost_tasks for worker threads")
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Co-developed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull firewire fix from Takashi Sakamoto:
"A single patch to use a flexible array rather than a zero-length one"
* tag 'firewire-fixes-6.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
firewire: Replace zero-length array with flexible-array member
Zero-length and one-element arrays are deprecated, and we are moving
towards adopting C99 flexible-array members, instead.
Address the following warnings found with GCC-13 and
-fstrict-flex-arrays=3 enabled:
sound/firewire/amdtp-stream.c: In function ‘build_it_pkt_header’:
sound/firewire/amdtp-stream.c:694:17: warning: ‘generate_cip_header’ accessing 8 bytes in a region of size 0 [-Wstringop-overflow=]
694 | generate_cip_header(s, cip_header, data_block_counter, syt);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sound/firewire/amdtp-stream.c:694:17: note: referencing argument 2 of type ‘__be32[2]’ {aka ‘unsigned int[2]’}
sound/firewire/amdtp-stream.c:667:13: note: in a call to function ‘generate_cip_header’
667 | static void generate_cip_header(struct amdtp_stream *s, __be32 cip_header[2],
| ^~~~~~~~~~~~~~~~~~~
This helps with the ongoing efforts to tighten the FORTIFY_SOURCE
routines on memcpy() and help us make progress towards globally
enabling -fstrict-flex-arrays=3 [1].
Link: https://github.com/KSPP/linux/issues/21
Link: https://github.com/KSPP/linux/issues/303
Link: https://gcc.gnu.org/pipermail/gcc-patches/2022-October/602902.html [1]
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/ZHT0V3SpvHyxCv5W@work
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
The bug here is that you cannot rely on getting the same socket
from multiple calls to fget() because userspace can influence
that. This is a kind of double fetch bug.
The fix is to delete the svc_alien_sock() function and instead do
the checking inside the svc_addsock() function.
Fixes: 3064639423 ("nfsd: check passed socket's net matches NFSd superblock's one")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: NeilBrown <neilb@suse.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Expose netdev trigger modes to make them accessible by LED driver that
will support netdev trigger for hw control.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Some specific LED triggers blink the LED based on events from a device
or subsystem.
For example, an LED could be blinked to indicate a network device is
receiving packets, or a disk is reading blocks. To correctly enable and
request the hw control of the LED, the trigger has to check if the
network interface or block device configured via a /sys/class/led file
match the one the LED driver provide for hw control for.
Provide an API call to get the device which the LED blinks for.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
