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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Networking fixes, including fixes from netfilter.
Current release - regressions:
- r8169: fix incorrect mac address assignment
- vlan: fix underflow for the real_dev refcnt when vlan creation
fails
- smc: avoid warning of possible recursive locking
Current release - new code bugs:
- vsock/virtio: suppress used length validation
- neigh: fix crash in v6 module initialization error path
Previous releases - regressions:
- af_unix: fix change in behavior in read after shutdown
- igb: fix netpoll exit with traffic, avoid warning
- tls: fix splice_read() when starting mid-record
- lan743x: fix deadlock in lan743x_phy_link_status_change()
- marvell: prestera: fix bridge port operation
Previous releases - always broken:
- tcp_cubic: fix spurious Hystart ACK train detections for
not-cwnd-limited flows
- nexthop: fix refcount issues when replacing IPv6 groups
- nexthop: fix null pointer dereference when IPv6 is not enabled
- phylink: force link down and retrigger resolve on interface change
- mptcp: fix delack timer length calculation and incorrect early
clearing
- ieee802154: handle iftypes as u32, prevent shift-out-of-bounds
- nfc: virtual_ncidev: change default device permissions
- netfilter: ctnetlink: fix error codes and flags used for kernel
side filtering of dumps
- netfilter: flowtable: fix IPv6 tunnel addr match
- ncsi: align payload to 32-bit to fix dropped packets
- iavf: fix deadlock and loss of config during VF interface reset
- ice: avoid bpf_prog refcount underflow
- ocelot: fix broken PTP over IP and PTP API violations
Misc:
- marvell: mvpp2: increase MTU limit when XDP enabled"
* tag 'net-5.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (94 commits)
net: dsa: microchip: implement multi-bridge support
net: mscc: ocelot: correctly report the timestamping RX filters in ethtool
net: mscc: ocelot: set up traps for PTP packets
net: ptp: add a definition for the UDP port for IEEE 1588 general messages
net: mscc: ocelot: create a function that replaces an existing VCAP filter
net: mscc: ocelot: don't downgrade timestamping RX filters in SIOCSHWTSTAMP
net: hns3: fix incorrect components info of ethtool --reset command
net: hns3: fix one incorrect value of page pool info when queried by debugfs
net: hns3: add check NULL address for page pool
net: hns3: fix VF RSS failed problem after PF enable multi-TCs
net: qed: fix the array may be out of bound
net/smc: Don't call clcsock shutdown twice when smc shutdown
net: vlan: fix underflow for the real_dev refcnt
ptp: fix filter names in the documentation
ethtool: ioctl: fix potential NULL deref in ethtool_set_coalesce()
nfc: virtual_ncidev: change default device permissions
net/sched: sch_ets: don't peek at classes beyond 'nbands'
net: stmmac: Disable Tx queues when reconfiguring the interface
selftests: tls: test for correct proto_ops
tls: fix replacing proto_ops
...
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Current driver version is able to handle only one bridge at time.
Configuring two bridges on two different ports would end up shorting this
bridges by HW. To reproduce it:
ip l a name br0 type bridge
ip l a name br1 type bridge
ip l s dev br0 up
ip l s dev br1 up
ip l s lan1 master br0
ip l s dev lan1 up
ip l s lan2 master br1
ip l s dev lan2 up
Ping on lan1 and get response on lan2, which should not happen.
This happened, because current driver version is storing one global "Port VLAN
Membership" and applying it to all ports which are members of any
bridge.
To solve this issue, we need to handle each port separately.
This patch is dropping the global port member storage and calculating
membership dynamically depending on STP state and bridge participation.
Note: STP support was broken before this patch and should be fixed
separately.
Fixes: c2e866911e25 ("net: dsa: microchip: break KSZ9477 DSA driver into two files")
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20211126123926.2981028-1-o.rempel@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These fix a NULL pointer dereference in the CPPC library code and a
locking issue related to printing the names of ACPI device nodes in
the device properties framework.
Specifics:
- Fix NULL pointer dereference in the CPPC library code occuring on
hybrid systems without CPPC support (Rafael Wysocki).
- Avoid attempts to acquire a semaphore with interrupts off when
printing the names of ACPI device nodes and clean up code on top of
that fix (Sakari Ailus)"
* tag 'acpi-5.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: CPPC: Add NULL pointer check to cppc_get_perf()
ACPI: Make acpi_node_get_parent() local
ACPI: Get acpi_device's parent from the parent field
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These address three issues in the intel_pstate driver and fix two
problems related to hibernation.
Specifics:
- Make intel_pstate work correctly on Ice Lake server systems with
out-of-band performance control enabled (Adamos Ttofari).
- Fix EPP handling in intel_pstate during CPU offline and online in
the active mode (Rafael Wysocki).
- Make intel_pstate support ITMT on asymmetric systems with
overclocking enabled (Srinivas Pandruvada).
- Fix hibernation image saving when using the user space interface
based on the snapshot special device file (Evan Green).
- Make the hibernation code release the snapshot block device using
the same mode that was used when acquiring it (Thomas Zeitlhofer)"
* tag 'pm-5.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM: hibernate: Fix snapshot partial write lengths
PM: hibernate: use correct mode for swsusp_close()
cpufreq: intel_pstate: ITMT support for overclocked system
cpufreq: intel_pstate: Fix active mode offline/online EPP handling
cpufreq: intel_pstate: Add Ice Lake server to out-of-band IDs
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The driver doesn't support RX timestamping for non-PTP packets, but it
declares that it does. Restrict the reported RX filters to PTP v2 over
L2 and over L4.
Fixes: 4e3b0468e6d7 ("net: mscc: PTP Hardware Clock (PHC) support")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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IEEE 1588 support was declared too soon for the Ocelot switch. Out of
reset, this switch does not apply any special treatment for PTP packets,
i.e. when an event message is received, the natural tendency is to
forward it by MAC DA/VLAN ID. This poses a problem when the ingress port
is under a bridge, since user space application stacks (written
primarily for endpoint ports, not switches) like ptp4l expect that PTP
messages are always received on AF_PACKET / AF_INET sockets (depending
on the PTP transport being used), and never being autonomously
forwarded. Any forwarding, if necessary (for example in Transparent
Clock mode) is handled in software by ptp4l. Having the hardware forward
these packets too will cause duplicates which will confuse endpoints
connected to these switches.
So PTP over L2 barely works, in the sense that PTP packets reach the CPU
port, but they reach it via flooding, and therefore reach lots of other
unwanted destinations too. But PTP over IPv4/IPv6 does not work at all.
This is because the Ocelot switch have a separate destination port mask
for unknown IP multicast (which PTP over IP is) flooding compared to
unknown non-IP multicast (which PTP over L2 is) flooding. Specifically,
the driver allows the CPU port to be in the PGID_MC port group, but not
in PGID_MCIPV4 and PGID_MCIPV6. There are several presentations from
Allan Nielsen which explain that the embedded MIPS CPU on Ocelot
switches is not very powerful at all, so every penny they could save by
not allowing flooding to the CPU port module matters. Unknown IP
multicast did not make it.
The de facto consensus is that when a switch is PTP-aware and an
application stack for PTP is running, switches should have some sort of
trapping mechanism for PTP packets, to extract them from the hardware
data path. This avoids both problems:
(a) PTP packets are no longer flooded to unwanted destinations
(b) PTP over IP packets are no longer denied from reaching the CPU since
they arrive there via a trap and not via flooding
It is not the first time when this change is attempted. Last time, the
feedback from Allan Nielsen and Andrew Lunn was that the traps should
not be installed by default, and that PTP-unaware switching may be
desired for some use cases:
https://patchwork.ozlabs.org/project/netdev/patch/20190813025214.18601-5-yangbo.lu@nxp.com/
To address that feedback, the present patch adds the necessary packet
traps according to the RX filter configuration transmitted by user space
through the SIOCSHWTSTAMP ioctl. Trapping is done via VCAP IS2, where we
keep 5 filters, which are amended each time RX timestamping is enabled
or disabled on a port:
- 1 for PTP over L2
- 2 for PTP over IPv4 (UDP ports 319 and 320)
- 2 for PTP over IPv6 (UDP ports 319 and 320)
The cookie by which these filters (invisible to tc) are identified is
strategically chosen such that it does not collide with the filters used
for the ocelot-8021q tagging protocol by the Felix driver, or with the
MRP traps set up by the Ocelot library.
Other alternatives were considered, like patching user space to do
something, but there are so many ways in which PTP packets could be made
to reach the CPU, generically speaking, that "do what?" is a very valid
question. The ptp4l program from the linuxptp stack already attempts to
do something: it calls setsockopt(IP_ADD_MEMBERSHIP) (and
PACKET_ADD_MEMBERSHIP, respectively) which translates in both cases into
a dev_mc_add() on the interface, in the kernel:
https://github.com/richardcochran/linuxptp/blob/v3.1.1/udp.c#L73
https://github.com/richardcochran/linuxptp/blob/v3.1.1/raw.c
Reality shows that this is not sufficient in case the interface belongs
to a switchdev driver, as dev_mc_add() does not show the intention to
trap a packet to the CPU, but rather the intention to not drop it (it is
strictly for RX filtering, same as promiscuous does not mean to send all
traffic to the CPU, but to not drop traffic with unknown MAC DA). This
topic is a can of worms in itself, and it would be great if user space
could just stay out of it.
On the other hand, setting up PTP traps privately within the driver is
not new by any stretch of the imagination:
https://elixir.bootlin.com/linux/v5.16-rc2/source/drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c#L833
https://elixir.bootlin.com/linux/v5.16-rc2/source/drivers/net/dsa/hirschmann/hellcreek.c#L1050
https://elixir.bootlin.com/linux/v5.16-rc2/source/include/linux/dsa/sja1105.h#L21
So this is the approach taken here as well. The difference here being
that we prepare and destroy the traps per port, dynamically at runtime,
as opposed to driver init time, because apparently, PTP-unaware
forwarding is a use case.
Fixes: 4e3b0468e6d7 ("net: mscc: PTP Hardware Clock (PHC) support")
Reported-by: Po Liu <po.liu@nxp.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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VCAP (Versatile Content Aware Processor) is the TCAM-based engine behind
tc flower offload on ocelot, among other things. The ingress port mask
on which VCAP rules match is present as a bit field in the actual key of
the rule. This means that it is possible for a rule to be shared among
multiple source ports. When the rule is added one by one on each desired
port, that the ingress port mask of the key must be edited and rewritten
to hardware.
But the API in ocelot_vcap.c does not allow for this. For one thing,
ocelot_vcap_filter_add() and ocelot_vcap_filter_del() are not symmetric,
because ocelot_vcap_filter_add() works with a preallocated and
prepopulated filter and programs it to hardware, and
ocelot_vcap_filter_del() does both the job of removing the specified
filter from hardware, as well as kfreeing it. That is to say, the only
option of editing a filter in place, which is to delete it, modify the
structure and add it back, does not work because it results in
use-after-free.
This patch introduces ocelot_vcap_filter_replace, which trivially
reprograms a VCAP entry to hardware, at the exact same index at which it
existed before, without modifying any list or allocating any memory.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The ocelot driver, when asked to timestamp all receiving packets, 1588
v1 or NTP, says "nah, here's 1588 v2 for you".
According to this discussion:
https://patchwork.kernel.org/project/netdevbpf/patch/20211104133204.19757-8-martin.kaistra@linutronix.de/#24577647
drivers that downgrade from a wider request to a narrower response (or
even a response where the intersection with the request is empty) are
buggy, and should return -ERANGE instead. This patch fixes that.
Fixes: 4e3b0468e6d7 ("net: mscc: PTP Hardware Clock (PHC) support")
Suggested-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Currently, HNS3 driver doesn't clear the reset flags of components after
successfully executing reset, it causes userspace info of
"Components reset" and "Components not reset" is incorrect.
So fix this problem by clear corresponding reset flag after reset process.
Fixes: ddccc5e368a3 ("net: hns3: add support for triggering reset by ethtool")
Signed-off-by: Jie Wang <wangjie125@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Currently, when user queries page pool info by debugfs command
"cat page_pool_info", the cnt of allocated page for page pool may be
incorrect because of memory inconsistency problem caused by compiler
optimization.
So this patch uses READ_ONCE() to read value of pages_state_hold_cnt to
fix this problem.
Fixes: 850bfb912a6d ("net: hns3: debugfs add support dumping page pool info")
Signed-off-by: Hao Chen <chenhao288@hisilicon.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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When page pool is not enabled, its address value is still NULL and page
pool should not be accessed, so add a check for it.
Fixes: 850bfb912a6d ("net: hns3: debugfs add support dumping page pool info")
Signed-off-by: Hao Chen <chenhao288@hisilicon.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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When PF is set to multi-TCs and configured mapping relationship between
priorities and TCs, the hardware will active these settings for this PF
and its VFs.
In this case when VF just uses one TC and its rx packets contain priority,
and if the priority is not mapped to TC0, as other TCs of VF is not valid,
hardware always put this kind of packets to the queue 0. It cause this kind
of packets of VF can not be used RSS function.
To fix this problem, set tc mode of all unused TCs of VF to the setting of
TC0, then rx packet with priority which map to unused TC will be direct to
TC0.
Fixes: e2cb1dec9779 ("net: hns3: Add HNS3 VF HCL(Hardware Compatibility Layer) Support")
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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If the variable 'p_bit->flags' is always 0,
the loop condition is always 0.
The variable 'j' may be greater than or equal to 32.
At this time, the array 'p_aeu->bits[32]' may be out
of bound.
Signed-off-by: zhangyue <zhangyue1@kylinos.cn>
Link: https://lore.kernel.org/r/20211125113610.273841-1-zhangyue1@kylinos.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Combine two judgments that return the same value
Signed-off-by: wengjianfeng <wengjianfeng@yulong.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20211126013130.27112-1-samirweng1979@163.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Device permissions is S_IALLUGO, with many unnecessary bits. Remove them
and also remove read and write permissions from group and others.
Before the change:
crwsrwsrwt 1 0 0 10, 125 Nov 25 13:59 /dev/virtual_nci
After the change:
crw------- 1 0 0 10, 125 Nov 25 14:05 /dev/virtual_nci
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Bongsu Jeon <bongsu.jeon@samsung.com>
Link: https://lore.kernel.org/r/20211125141457.716921-1-cascardo@canonical.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge fix and cleanup related to the management of ACPI device
properties for 5.16-rc3.
* acpi-properties:
ACPI: Make acpi_node_get_parent() local
ACPI: Get acpi_device's parent from the parent field
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The Tx queues were not disabled in situations where the driver needed to
stop the interface to apply a new configuration. This could result in a
kernel panic when doing any of the 3 following actions:
* reconfiguring the number of queues (ethtool -L)
* reconfiguring the size of the ring buffers (ethtool -G)
* installing/removing an XDP program (ip l set dev ethX xdp)
Prevent the panic by making sure netif_tx_disable is called when stopping
an interface.
Without this patch, the following kernel panic can be observed when doing
any of the actions above:
Unable to handle kernel paging request at virtual address ffff80001238d040
[....]
Call trace:
dwmac4_set_addr+0x8/0x10
dev_hard_start_xmit+0xe4/0x1ac
sch_direct_xmit+0xe8/0x39c
__dev_queue_xmit+0x3ec/0xaf0
dev_queue_xmit+0x14/0x20
[...]
[ end trace 0000000000000002 ]---
Fixes: 5fabb01207a2d ("net: stmmac: Add initial XDP support")
Fixes: aa042f60e4961 ("net: stmmac: Add support to Ethtool get/set ring parameters")
Fixes: 0366f7e06a6be ("net: stmmac: add ethtool support for get/set channels")
Signed-off-by: Yannick Vignon <yannick.vignon@nxp.com>
Link: https://lore.kernel.org/r/20211124154731.1676949-1-yannick.vignon@oss.nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fix from Greg KH:
"Here is a single binder driver fix for 5.16-rc3.
It resolves a problem reported in the set of binder fixes that went
into 5.16-rc1. It has been in linux-next for a while with no reported
problems"
* tag 'char-misc-5.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
binder: fix test regression due to sender_euid change
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging fixes from Greg KH:
"Here are some small staging driver fixes and one driver removal for
5.16-rc3.
The fixes resolve a number of small issues found in 5.16-rc1, nothing
huge at all. The driver removal was due to a platform being removed in
5.16-rc1, but this driver was forgotten about. It wasn't being built
anymore so it's safe to delete.
All have been in linux-next for a while with no reported problems"
* tag 'staging-5.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect()
staging: greybus: Add missing rwsem around snd_ctl_remove() calls
staging: Remove Netlogic XLP network driver
staging: r8188eu: fix a memory leak in rtw_wx_read32()
staging: r8188eu: use GFP_ATOMIC under spinlock
staging: r8188eu: Use kzalloc() with GFP_ATOMIC in atomic context
staging/fbtft: Fix backlight
staging: r8188eu: Fix breakage introduced when 5G code was removed
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are a number of small USB fixes for reported problems for
5.16-rc3
They include:
- typec driver fixes
- new usb-serial driver ids
- usb hub enumeration issues that were much reported
- gadget driver fixes
- dwc3 driver fix
- chipidea driver fixe
All of these have been in linux-next with no reported problems"
* tag 'usb-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
USB: serial: option: add Fibocom FM101-GL variants
usb: typec: tipd: Fix initialization sequence for cd321x
usb: typec: tipd: Fix typo in cd321x_switch_power_state
usb: hub: Fix locking issues with address0_mutex
USB: serial: pl2303: fix GC type detection
USB: serial: option: add Telit LE910S1 0x9200 composition
usb: chipidea: ci_hdrc_imx: fix potential error pointer dereference in probe
usb: hub: Fix usb enumeration issue due to address0 race
usb: typec: fusb302: Fix masking of comparator and bc_lvl interrupts
usb: dwc3: leave default DMA for PCI devices
usb: dwc2: hcd_queue: Fix use of floating point literal
usb: dwc3: gadget: Fix null pointer exception
usb: gadget: udc-xilinx: Fix an error handling path in 'xudc_probe()'
usb: xhci: tegra: Check padctrl interrupt presence in device tree
usb: dwc2: gadget: Fix ISOC flow for elapsed frames
usb: dwc3: gadget: Check for L1/L2/U3 for Start Transfer
usb: dwc3: gadget: Ignore NoStream after End Transfer
usb: dwc3: core: Revise GHWPARAMS9 offset
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git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC host fixes from Ulf Hansson:
- mmc_spi: Add SPI IDs to silence warning
- sdhci: Fix ADMA for PAGE_SIZE >= 64KiB
- sdhci-esdhc-imx: Disable broken CMDQ for imx8qm/imx8qxp/imx8mm
* tag 'mmc-v5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: spi: Add device-tree SPI IDs
mmc: sdhci: Fix ADMA for PAGE_SIZE >= 64KiB
mmc: sdhci-esdhc-imx: disable CMDQ support
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"I2C has an interrupt storm fix for the i801, better timeout handling
for the new virtio driver, and some documentation fixes this time"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
docs: i2c: smbus-protocol: mention the repeated start condition
i2c: virtio: disable timeout handling
i2c: i801: Fix interrupt storm from SMB_ALERT signal
i2c: i801: Restore INTREN on unload
dt-bindings: i2c: imx-lpi2c: Fix i.MX 8QM compatible matching
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
- Kconfig fix to make it possible to control building of the privcmd
driver
- three fixes for issues identified by the kernel test robot
- a five-patch series to simplify timeout handling for Xen PV driver
initialization
- two patches to fix error paths in xenstore/xenbus driver
initialization
* tag 'for-linus-5.16c-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen: make HYPERVISOR_set_debugreg() always_inline
xen: make HYPERVISOR_get_debugreg() always_inline
xen: detect uninitialized xenbus in xenbus_init
xen: flag xen_snd_front to be not essential for system boot
xen: flag pvcalls-front to be not essential for system boot
xen: flag hvc_xen to be not essential for system boot
xen: flag xen_drm_front to be not essential for system boot
xen: add "not_essential" flag to struct xenbus_driver
xen/pvh: add missing prototype to header
xen: don't continue xenstore initialization in case of errors
xen/privcmd: make option visible in Kconfig
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When CONFIG_COMMON_CLOCK is disabled, the 8996 specific
phy code is left out, which results in a link failure:
ld: drivers/gpu/drm/msm/hdmi/hdmi_phy.o:(.rodata+0x3f0): undefined reference to `msm_hdmi_phy_8996_cfg'
This was only exposed after it became possible to build
test the driver without the clock interfaces.
Make COMMON_CLK a hard dependency for compile testing,
and simplify it a little based on that.
Fixes: b3ed524f84f5 ("drm/msm: allow compile_test on !ARM")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20211013144308.2248978-1-arnd@kernel.org
Signed-off-by: Rob Clark <robdclark@chromium.org>
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If writeback isn't configured, then we get the following warning when
compiling zram:
drivers/block/zram/zram_drv.c:1824:45: warning: unused variable 'zram_wb_devops' [-Wunused-const-variable]
Make sure we only define the block_device_operations if that option is
enabled.
Link: https://lore.kernel.org/lkml/202111261614.gCJMqcyh-lkp@intel.com/
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Remove unused variables to avoid the below warnings:
drivers/net/wireless/microchip/wilc1000/wlan.c: In function 'chip_wakeup':
>> drivers/net/wireless/microchip/wilc1000/wlan.c:620:34: warning: variable 'to_host_from_fw_bit' set but not used [-Wunused-but-set-variable]
620 | u32 to_host_from_fw_reg, to_host_from_fw_bit;
| ^~~~~~~~~~~~~~~~~~~
>> drivers/net/wireless/microchip/wilc1000/wlan.c:620:13: warning: variable 'to_host_from_fw_reg' set but not used [-Wunused-but-set-variable]
620 | u32 to_host_from_fw_reg, to_host_from_fw_bit;
| ^~~~~~~~~~~~~~~~~~~
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211115102809.1408267-1-ajay.kathat@microchip.com
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Read the rfkill state upon boot, mac start and mac stop.
Reviewed-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211112062814.7502-6-emmanuel.grumbach@intel.com
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Add the vendor commands that must be used by the network manager
to allow proper operation of iwlmei.
* Send information on the AP CSME is connected to
* Notify the userspace when roaming is forbidden
* Allow the userspace to require ownership
Co-Developed-by: Ayala Beker <ayala.beker@intel.com>
Signed-off-by: Ayala Beker <ayala.beker@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
v6: remove the VENDOR_CMDS Kconfig option and make the whole infra
depend on IWLMEI directly
v7: remove // comments
remove an unneeded function
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211112062814.7502-5-emmanuel.grumbach@intel.com
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iwlmei needs to know about the follwing events:
* Association
* De-association
* Country Code change
* SW Rfkill change
* SAR table changes
iwlmei can take the device away from us, so report the new
rfkill type when this happens.
Advertise the required data from the CSME firmware to the
usersapce: mostly, the AP that the CSME firmware is currently
associated to in case there is an active link protection
session.
Generate the HOST_ASSOC / HOST_DISSASSOC messages.
Don't support WPA1 (non-RSNA) for now.
Don't support shared wep either.
We can then determine the AUTH parameter by checking the AKM.
Feed the cipher from the key installation.
SW Rfkill will be implemented later when cfg80211 will
allow us to read the SW Rfkill state.
Co-Developed-by: Ayala Beker <ayala.beker@intel.com>
Signed-off-by: Ayala Beker <ayala.beker@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
v7: Ayala added her signed-off
remove pointless function declaration
fix a bug due to merge conflict in the HOST_ASSOC message
v8: leave a print if we have a SAP connection on a device we do
not support (yet)
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211112062814.7502-4-emmanuel.grumbach@intel.com
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Add three debugfs hooks:
* status: Check if we have a connection with the CSME
firwmare. This hook is a read only.
* req_ownership: Send a SAP command to request ownership. This
flow should be triggered by iwlwifi (from user space through
vendor commands really), but being able to trigger an ownership
request from debugfs allows us to request ownership without
connecting afterwards. This is an "error" flow that the CSME
firmware is designed to handle this way:
+ Grant ownership since the host asked for it
+ Wait 3 seconds to let the host connect
+ If the host didn't connect, take the device back (forcefully).
+ Don't grant any new ownership request in the following 30
seconds.
This debugfs hook allows us to test this flow.
* send_start_message: Restart the communication with the CSME
firmware from the very beginning. At the very beginning (upon
iwlwifi start), iwlmei send a special message: SAP_ME_MSG_START.
This hook allows to send it again and this will retrigger the
whole flow. It is important to test this restart in the middle
of normal operation since it can happen (in case the CSME
firmware decided to reset for example).
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211112062814.7502-3-emmanuel.grumbach@intel.com
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CSME in two words
-----------------
CSME stands for Converged Security and Management Engine. It is
a CPU on the chipset and runs a dedicated firmware.
AMT (Active Management Technology) is one of the applications
that run on that CPU. AMT allows to control the platform remotely.
Here is a partial list of the use cases:
* View the screen of the plaform, with keyboard and mouse (KVM)
* Attach a remote IDE device
* Have a serial console to the device
* Query the state of the platform
* Reset / shut down / boot the platform
Networking in CSME
------------------
For those uses cases, CSME's firmware has an embedded network
stack and is able to use the network devices of the system: LAN
and WLAN. This is thanks to the CSME's firmware WLAN driver.
One can add a profile (SSID / key / certificate) to the CSME's OS
and CSME will connect to that profile. Then, one can use the WLAN
link to access the applications that run on CSME (AMT is one of
them). Note that CSME is active during power state and power state
transitions. For example, it is possible to have a KVM session
open to the system while the system is rebooting and actually
configure the BIOS remotely over WLAN thanks to AMT.
How all this is related to Linux
--------------------------------
In Linux, there is a driver that allows the OS to talk to the
CSME firmware, this driver is drivers/misc/mei. This driver
advertises a bus that allows other kernel drivers or even user
space) to talk to components inside the CSME firmware.
In practice, the system advertises a PCI device that allows
to send / receive data to / from the CSME firmware. The mei
bus drivers in drivers/misc/mei is an abstration on top of
this PCI device.
The driver being added here is called iwlmei and talks to the
WLAN driver inside the CSME firmware through the mei bus driver.
Note that the mei bus driver only gives bus services, it doesn't
define the content of the communication.
Why do we need this driver?
--------------------------
CSME uses the same WLAN device that the OS is expecting to see
hence we need an arbitration mechanism. This is what iwlmei is
in charge of. iwlmei maintains the communication with the CSME
firmware's WLAN driver. The language / protocol that is used
between the CSME's firmware WLAN driver and iwlmei is OS agnostic
and is called SAP which stands for Software Abritration Protocol.
With SAP, iwlmei will be able to tell the CSME firmware's WLAN
driver:
1) Please give me the device.
2) Please note that the SW/HW rfkill state change.
3) Please note that I am now associated to X.
4) Please note that I received this packet.
etc...
There are messages that go the opposite direction as well:
1) Please note that AMT is en/disable.
2) Please note that I believe the OS is broken and hence I'll take
the device *now*, whether you like it or not, to make sure that
connectivity is preserved.
3) Please note that I am willing to give the device if the OS
needs it.
4) Please give me any packet that is sent on UDP / TCP on IP address
XX.XX.XX.XX and an port ZZ.
5) Please send this packet.
etc...
Please check drivers/net/wireless/intel/iwlwifi/mei/sap.h for the
full protocol specification.
Arbitration is not the only purpose of iwlmei and SAP. SAP also
allows to maintain the AMT's functionality even when the OS owns
the device. To connect to AMT, one needs to initiate an HTTP
connection to port 16992. iwlmei will listen to the Rx path and
forward (through SAP) to the CSME firmware the data it got. Then,
the embedded HTTP server in the chipset will reply to the request
and send a SAP notification to ask iwlmei to send the reply.
This way, AMT running on the CSME can still work.
In practice this means that all the use cases quoted above (KVM,
remote IDE device, etc...) will work even when the OS uses the
WLAN device.
How to disable all this?
---------------------------
iwlmei won't be able to do anything if the CSME's networking stack
is not enabled. By default, CSME's networking stack is disabled (this
is a BIOS setting).
In case the CSME's networking stack is disabled, iwlwifi will just
get access to the device because there is no contention with any other
actor and, hence, no arbitration is needed.
In this patch, I only add the iwlmei driver. Integration with
iwlwifi will be implemented in the next one.
Co-Developed-by: Ayala Beker <ayala.beker@intel.com>
Signed-off-by: Ayala Beker <ayala.beker@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
v2: fix a few warnings raised by the different bots
v3: rewrite the commit message
v4: put the debugfs content in a different patch
v5: fix a NULL pointer dereference upon DHCP TX if SAP is connected
since we now have the required cfg80211 bits in wl-drv-next, add
the RFKILL handling patch to this series.
v6: change the SAP API to inherit the values from iwl-mei.h removing
the need to ensure the values are equal with a BUILD_BUG_ON.
This was suggested by Arend
v7: * fix a locking issue in case of CSME firmware reset:
When the CSME firmware resets, we need to unregister the
netdev, first take the mutex, and only then, rely on it
being taken.
* Add a comment to explain why it is ok to have static variables
(iwlmei can't have more than a single instance).
* Add a define for 26 + 8 + 8
* Add a define SEND_SAP_MAX_WAIT_ITERATION
* make struct const
* Reword a bit the Kconfig help message
* Ayala added her Signed-off
* fixed an RCU annotation
v8: do not require ownership upfront, use NIC_OWNER instead. This fixes
a deadlock when CSME does not have the right WiFi FW.
Add more documentation about the owernship transition
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211112062814.7502-2-emmanuel.grumbach@intel.com
|
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Expose the client dma mapping via mei client bus interface.
The client dma has to be mapped before the device is enabled,
therefore we need to create device linking already during mapping
and we need to unmap after the client is disable hence we need to
postpone the unlink and flush till unmapping or when
destroying the device.
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Co-developed-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20210420172755.12178-1-emmanuel.grumbach@intel.com
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211112062814.7502-1-emmanuel.grumbach@intel.com
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The firmware of the 88W8897 PCIe+USB card sends those events very
unreliably, sometimes bluetooth together with 2.4ghz-wifi is used and no
COEX event comes in, and sometimes bluetooth is disabled but the
coexistance mode doesn't get disabled.
This means we sometimes end up capping the rx/tx window size while
bluetooth is not enabled anymore, artifically limiting wifi speeds even
though bluetooth is not being used.
Since we can't fix the firmware, let's just ignore those events on the
88W8897 device. From some Wireshark capture sessions it seems that the
Windows driver also doesn't change the rx/tx window sizes when bluetooth
gets enabled or disabled, so this is fairly consistent with the Windows
driver.
Signed-off-by: Jonas Dreßler <verdre@v0yd.nl>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211103205827.14559-1-verdre@v0yd.nl
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We assume at a few places that priv->version_str is 0-terminated, but
right now we trust the firmware that this is the case with the version
string we get from it.
Let's rather ensure this ourselves and replace the last character with
'\0'.
Signed-off-by: Jonas Dreßler <verdre@v0yd.nl>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211103201800.13531-4-verdre@v0yd.nl
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The 88W8897 PCIe+USB card in the hardware revision 20 apparently has a
hardware issue where the card wakes up from deep sleep randomly and very
often, somewhat depending on the card activity, maybe the hardware has a
floating wakeup pin or something. This was found by comparing two MS
Surface Book 2 devices, where one devices wifi card experienced spurious
wakeups, while the other one didn't.
Those continuous wakeups prevent the card from entering host sleep when
the computer suspends. And because the host won't answer to events from
the card anymore while it's suspended, the firmwares internal power
saving state machine seems to get confused and the card can't sleep
anymore at all after that.
Since we can't work around that hardware bug in the firmware, let's
get the hardware revision string from the firmware and match it with
known bad revisions. Then disable auto deep sleep for those revisions,
which makes sure we no longer get those spurious wakeups.
Signed-off-by: Jonas Dreßler <verdre@v0yd.nl>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211103201800.13531-3-verdre@v0yd.nl
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Since the version string we get from the firmware is always 128
characters long, use a define for this size instead of having the number
128 copied all over the place.
Signed-off-by: Jonas Dreßler <verdre@v0yd.nl>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211103201800.13531-2-verdre@v0yd.nl
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Currently, with an unknown recv_type, mwifiex_usb_recv
just return -1 without restoring the skb. Next time
mwifiex_usb_rx_complete is invoked with the same skb,
calling skb_put causes skb_over_panic.
The bug is triggerable with a compromised/malfunctioning
usb device. After applying the patch, skb_over_panic
no longer shows up with the same input.
Attached is the panic report from fuzzing.
skbuff: skb_over_panic: text:000000003bf1b5fa
len:2048 put:4 head:00000000dd6a115b data:000000000a9445d8
tail:0x844 end:0x840 dev:<NULL>
kernel BUG at net/core/skbuff.c:109!
invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 PID: 198 Comm: in:imklog Not tainted 5.6.0 #60
RIP: 0010:skb_panic+0x15f/0x161
Call Trace:
<IRQ>
? mwifiex_usb_rx_complete+0x26b/0xfcd [mwifiex_usb]
skb_put.cold+0x24/0x24
mwifiex_usb_rx_complete+0x26b/0xfcd [mwifiex_usb]
__usb_hcd_giveback_urb+0x1e4/0x380
usb_giveback_urb_bh+0x241/0x4f0
? __hrtimer_run_queues+0x316/0x740
? __usb_hcd_giveback_urb+0x380/0x380
tasklet_action_common.isra.0+0x135/0x330
__do_softirq+0x18c/0x634
irq_exit+0x114/0x140
smp_apic_timer_interrupt+0xde/0x380
apic_timer_interrupt+0xf/0x20
</IRQ>
Reported-by: Brendan Dolan-Gavitt <brendandg@nyu.edu>
Signed-off-by: Zekun Shen <bruceshenzk@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/YX4CqjfRcTa6bVL+@Zekuns-MBP-16.fios-router.home
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8821CE causes random freezes on HP 250 G7 Notebook PC. Add a quirk
to disable pci ASPM capability.
Reported-by: rtl8821cerfe2 <rtl8821cerfe2@protonmail.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211119052437.8671-1-pkshih@realtek.com
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The management frame with high rate e.g. 24M may not be transmitted
smoothly in long range environment.
Add a debugfs to force to use the lowest basic rate
in order to debug the reachability of transmitting management frame.
obtain current setting
cat /sys/kernel/debug/ieee80211/phyX/rtw88/force_lowest_basic_rate
force lowest rate:
echo 1 > /sys/kernel/debug/ieee80211/phyX/rtw88/force_lowest_basic_rate
Signed-off-by: Yu-Yen Ting <steventing@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211102022454.10944-2-pkshih@realtek.com
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By default the driver uses the 1M and 6M rate for managemnt frames
in 2G and 5G bands respectively. But when the basic rates is
configured from the mac80211, we need to send the management frames
according to the basic rates.
This commit makes the driver use the lowest basic rates to send
the management frames.
Signed-off-by: Yu-Yen Ting <steventing@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211102022454.10944-1-pkshih@realtek.com
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The AXIDMA is tx/rx packet transmission between PCIE host
and device, and TX FIFO is MAC TX data.
We dump them to verify that these memory buffers are correct.
Signed-off-by: Chia-Yuan Li <leo.li@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Reviewed-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211122021129.4339-1-pkshih@realtek.com
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The RF register array is used to help firmware to restore RF settings.
The original code can potentially access out of range, if the size is
between (RTW89_H2C_RF_PAGE_SIZE * RTW89_H2C_RF_PAGE_NUM + 1) to
((RTW89_H2C_RF_PAGE_SIZE + 1) * RTW89_H2C_RF_PAGE_NUM). Fortunately,
current used size doesn't fall into the wrong case, and the size will not
change if we don't update RF parameter.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211119055729.12826-1-pkshih@realtek.com
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Fix the following coccicheck review:
./drivers/net/wireless/realtek/rtw89/mac.c: 1096: 5-8: Unneeded variable
Remove unneeded variable used to store return value.
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Changcheng Deng <deng.changcheng@zte.com.cn>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211110121135.151187-1-deng.changcheng@zte.com.cn
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The conditional operator is unnecessary while assigning values to the
bool variables.
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Ye Guojin <ye.guojin@zte.com.cn>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211104061119.1685-1-ye.guojin@zte.com.cn
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Start to configure entries with RTW89_QATAR, RTW89_UKRAINE, RTW89_CN.
Adjust some entries with explicit rtw89_regulatory instead of RTW89_WW.
Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211101093106.28848-5-pkshih@realtek.com
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Update tx power limit table and tx power limit_ru table to R54.
Configure entries for MEXICO, CN, QATAR, and adjust some values
of original entries.
Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211101093106.28848-4-pkshih@realtek.com
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Support QATAR in rtw89_regulation_type and reorder the enum to align
realtek R58-R31 regulation definition. Besides, if an unassigned entry
of limit/limit_ru tables is read, return the corresponding WW value for
the unconfigured case.
Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211101093106.28848-3-pkshih@realtek.com
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This modification just replaces the number filled in the regd field
with the corresponding enum. No assignment of a value in a table is
changed. Doing this first is because the follow-up patches may adjust
the order of enum declarations.
Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211101093106.28848-2-pkshih@realtek.com
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In preparation for FORTIFY_SOURCE performing compile-time and run-time
field bounds checking for memset(), avoid intentionally writing across
neighboring fields.
Use memset_after() so memset() doesn't get confused about writing
beyond the destination member that is intended to be the starting point
of zeroing through the end of the struct.
Additionally fix the common helper, ieee80211_tx_info_clear_status(),
which was not clearing ack_signal, but the open-coded versions
did. Johannes Berg points out this bug was introduced by commit
e3e1a0bcb3f1 ("mac80211: reduce IEEE80211_TX_MAX_RATES") but was harmless.
Also drops the associated unneeded BUILD_BUG_ON()s, and adds a note to
carl9170 about usage.
Signed-off-by: Kees Cook <keescook@chromium.org>
Tested-by: Christian Lamparter <chunkeey@gmail.com> [both CARL9170+P54USB on real HW]
Link: https://lore.kernel.org/r/20211118203839.1289276-1-keescook@chromium.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Since firmware uses its own sequence number counters, we need to
use firmware number as well when mac80211 generates the ADD_BA
request packet. Indeed the firmware sequence counters tend to
slightly drift from the mac80211 ones because of firmware offload
features like ARP responses. This causes the starting sequence
number field of the ADD_BA request to be unaligned, and can possibly
cause issues with strict/picky APs.
To fix this, we retrieve the current firmware sequence number for
a given TID through the smd_trigger_ba API, and use that number as
replacement of the mac80211 starting sequence number.
This change also ensures that any issue in the smd *ba procedures
will cause the ba action to properly fail, and remove useless call
to smd_trigger_ba() from IEEE80211_AMPDU_RX_START.
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1637604251-11763-1-git-send-email-loic.poulain@linaro.org
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