To work with generalized flow of download firmware, implement WiFi 7
specific functions to support it. These functions include disable/enable
WiFi CPU, status of path ready, and status of firmware.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230901073956.54203-4-pkshih@realtek.com
In order to reuse the flow to download firmware, define some mac_gen::ops
to implement them for WiFi 6 and 7 chips individually. This doesn't change
logic at all.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230901073956.54203-3-pkshih@realtek.com
To download firmware, we need to check path is ready. There are two kinds
of path -- one is to download firmware header, and the other is to download
firmware body.
Since the polling method is different from WiFi 7 chips, make it to be
an individual function, and then we can reuse the download flow.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230901073956.54203-2-pkshih@realtek.com
According to Wi-Fi/BT roles' settings, we fill corresponding H2Cs (host
to chip packets). Then, following MCC (multi-channel concurrency) pattern,
we send these H2Cs as planned. Eventually, the trigger H2Cs will be sent
to tell FW to really start/stop MCC.
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@kernel.org>
Link: https://lore.kernel.org/r/20230831053133.24015-7-pkshih@realtek.com
Fix a typo where `bitamp` should be `bitmap`. Don't change functionality
at all.
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@kernel.org>
Link: https://lore.kernel.org/r/20230831053133.24015-6-pkshih@realtek.com
After the previous works, we can now expand and display the MCC pattern
in more detail, as shown below.
|< MCC interval >|
|< duration ref >| (if mid bt) |< duration aux >| (if tail bt) |
|<tob ref >|< toa ref>| ... |<tob aux >|< toa aux>| ... |
V V
tbtt ref tbtt aux
|< beacon offset >|
(where tob means `time offset behind` and toa means `time offset ahead`)
There are two key points.
1. decide position of BT slot if MCC pattern needs to handle BT duration.
2. calculate all parameters related to tob and toa in MCC pattern.
For point (1), when BT duration needs to be handled, BT position will
rely on beacon offset, either middle or tail. For point (2), to ensure
durations of the Wi-Fi roles cover their beacons, we have to calculate
tob and toa for them according to their TBTT.
And, there are two strategies to calculate parameters, strict and loose.
In strict pattern, all parameters take HW time into account as limitation.
But, the strict calculation are not always successful. In loose pattern,
it only tries to give positive parameters to reference role and doesn't
care much about auxiliary role. If unfortunately auxiliary role gets
negative parameters in loose pattern, FW will be notified and then deal
with it. So, the loose calculation won't fail. In general, we always try
strict pattern cases before using a loose pattern.
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@kernel.org>
Link: https://lore.kernel.org/r/20230831053133.24015-5-pkshih@realtek.com
Before calculating MCC pattern, we have to determine whether to handle BT
duration in it or not. The decision will depend on the channels that Wi-Fi
roles use. And, we have three cases shown below.
1. non-2GHz + non-2GHz
2. non-2GHz + 2GHz (different band)
3. 2GHz + 2GHz (dual 2GHz)
For case (1), we don't care BT duration in MCC pattern. For case (2), we
still don't care BT duration in MCC pattern. Instead, we try to satisfy it
by modifying duration of Wi-Fi role on non-2GHz channel. For case (3), we
need to modify Wi-Fi durations and also need to handle BT duration in MCC
pattern.
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@kernel.org>
Link: https://lore.kernel.org/r/20230831053133.24015-4-pkshih@realtek.com
We determine the fundamental settings shown below.
|< MCC interval >|
|< duration ref >|< duration aux >|
| | | |
|< beacon offset >|
| |
V V
(tbtt ref) (tbtt aux)
(where `ref` (reference) and `aux` (auxiliary) mean the two MCC roles)
Based on MCC mode (GO+STA or GC+STA), we fill configurations of
MCC interval and beacon offset. And, we make sure each MCC role
have a basically required duration in the MCC interval.
The beacon offset mentioned above is a parameter for further MCC
pattern calculation. If MCC is in GC+STA mode, we will calculate
the real beacon offset through TSFs shown in beacons of both MCC
roles. Otherwise, we will use a default beacon offset, and make
GO sync STA's TSF timer with this offset.
MCC pattern calculation will break down each MCC role's duration
in more detail. We will implement it in the following.
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@kernel.org>
Link: https://lore.kernel.org/r/20230831053133.24015-3-pkshih@realtek.com
We prepare to support TDMA-based MCC (multi-channel concurrency)
which allows two kinds of modes below.
* P2P GO + normal STA
* P2P GC + normal STA
Each mode has two vif and two chanctx. Then, each vif binds one
separate chanctx and becomes one MCC role. We name the two MCC
roles as follows.
* MCC role - reference (ref)
We calculate the baseline of our TDMA things accodring
to its info, e.g. TBTT. In normal case, it will be put
at the first slot of TDMA.
* MCC role - auxiliary (aux)
MCC state machine will be running in FW eventually, but before that,
we have to fill and calculate things that are needed by FW. We fill
the information of MCC role according to its vif and its chanctx.
Then, we calculate the start time for MCC.
Note that the parameters used in the calculation now is assigned by
default rules. The precise parameters for better MCC behavior will be
derived in the following.
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@kernel.org>
Link: https://lore.kernel.org/r/20230831053133.24015-2-pkshih@realtek.com
TSSI configures bandedge to TX proper waveform, these new bandedge
parameters improve the accuracy of transmit power compensation.
This helps to avoid throughput degradation.
Signed-off-by: Kuan-Chung Chen <damon.chen@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230830092849.153251-2-pkshih@realtek.com
When compiling with clang 16.0.6 and CONFIG_FORTIFY_SOURCE=y, I've
noticed the following (somewhat confusing due to absence of an actual
source code location):
In file included from drivers/net/wireless/purelifi/plfxlc/mac.c:6:
In file included from ./include/linux/netdevice.h:24:
In file included from ./include/linux/timer.h:6:
In file included from ./include/linux/ktime.h:24:
In file included from ./include/linux/time.h:60:
In file included from ./include/linux/time32.h:13:
In file included from ./include/linux/timex.h:67:
In file included from ./arch/x86/include/asm/timex.h:5:
In file included from ./arch/x86/include/asm/processor.h:23:
In file included from ./arch/x86/include/asm/msr.h:11:
In file included from ./arch/x86/include/asm/cpumask.h:5:
In file included from ./include/linux/cpumask.h:12:
In file included from ./include/linux/bitmap.h:11:
In file included from ./include/linux/string.h:254:
./include/linux/fortify-string.h:592:4: warning: call to '__read_overflow2_field'
declared with 'warning' attribute: detected read beyond size of field (2nd
parameter); maybe use struct_group()? [-Wattribute-warning]
__read_overflow2_field(q_size_field, size);
The compiler actually complains on 'plfxlc_get_et_strings()' where
fortification logic inteprets call to 'memcpy()' as an attempt to copy
the whole 'et_strings' array from its first member and so issues an
overread warning. This warning may be silenced by passing an address
of the whole array and not the first member to 'memcpy()'.
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230829094541.234751-1-dmantipov@yandex.ru
TOTOLINK N150UA V5/N150UA-B (VID=0x0bda, PID=0x2005) works fine with
the rtl8xxxu driver, so mark as tested.
Signed-off-by: Zenm Chen <zenmchen@gmail.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230829074358.14795-1-zenmchen@gmail.com
The probe function of 8822cu is misplaced to 8822bu, so we fix it. Just
cosmetics, no changes in functionality.
Signed-off-by: Po-Hao Huang <phhuang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230825062404.50813-1-pkshih@realtek.com
Tony Nguyen says:
====================
Intel Wired LAN Driver Updates 2023-08-24 (igc, e1000e)
This series contains updates to igc and e1000e drivers.
Vinicius adds support for utilizing multiple PTP registers on igc.
Sasha reduces interval time for PTM on igc and adds new device support
on e1000e.
* '1GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue:
e1000e: Add support for the next LOM generation
igc: Decrease PTM short interval from 10 us to 1 us
igc: Add support for multiple in-flight TX timestamps
====================
Link: https://lore.kernel.org/r/20230824204418.1551093-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
We use a tempfile for code generation, to avoid wiping the target
file out if the code generator crashes. File contents are copied
from tempfile to actual destination at the end of main().
uAPI generation is relatively simple so when generating the uAPI
header we return from main() early, and never reach the "copy code
over" stage. Since commit under Fixes uAPI headers are not updated
by ynl-gen.
Move the copy/commit of the code into CodeWriter, to make it
easier to call at any point in time. Hook it into the destructor
to make sure we don't miss calling it.
Fixes: f65f305ae0 ("tools: ynl-gen: use temporary file for rendering")
Link: https://lore.kernel.org/r/20230824212431.1683612-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Russell King says:
====================
stmmac cleanups
One of the comments I had on Feiyang Chen's series was concerning the
initialisation of phylink... and so I've decided to do something about
it, cleaning it up a bit.
This series:
1) adds a new phylink function to limit the MAC capabilities according
to a maximum speed. This allows us to greatly simplify stmmac's
initialisation of phylink's mac capabilities.
2) everywhere that uses priv->plat->phylink_node first converts this
to a fwnode before doing anything with it. This is silly. Let's
instead store it as a fwnode to eliminate these conversions in
multiple places.
3) clean up passing the fwnode to phylink - it might as well happen
at the phylink_create() callsite, rather than being scattered
throughout the entire function.
4) same for mdio_bus_data
5) use phylink_limit_mac_speed() to handle the priv->plat->max_speed
restriction.
6) add a method to get the MAC-specific capabilities from the code
dealing with the MACs, and arrange to call it at an appropriate
time.
7) convert the gmac4 users to use the MAC specific method.
8) same for xgmac.
9) group all the simple phylink_config initialisations together.
10) convert half-duplex logic to being positive logic.
While looking into all of this, this raised eyebrows:
if (priv->plat->tx_queues_to_use > 1)
priv->phylink_config.mac_capabilities &=
~(MAC_10HD | MAC_100HD | MAC_1000HD);
priv->plat->tx_queues_to_use is initialised by platforms to either 1,
4 or 8, and can be controlled from userspace via the --set-channels
ethtool op. The implementation of this op in this driver limits the
number of channels to priv->dma_cap.number_tx_queues, which is derived
from the DMA hwcap.
So, the obvious questions are:
1) what guarantees that the static initialisation of tx_queues_to_use
will always be less than or equal to number_tx_queues from the DMA hw
cap?
2) tx_queues_to_use starts off as 1, but number_tx_queues is larger,
we will leave the half-duplex capabilities in place, but userspace can
increase tx_queues_to_use above 1. Does that mean half-duplex is then
not supported?
3) Should we be basing the decision whether half-duplex is supported
off the DMA capabilities?
4) What about priv->dma_cap.half_duplex? Doesn't that get a say in
whether half-duplex is supported or not? Why isn't this used? Why is
it only reported via debugfs? If it's not being used by the driver,
what's the point of reporting it via debugfs?
====================
Link: https://lore.kernel.org/r/ZOddFH22PWmOmbT5@shell.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Rather than detecting when half-duplex is not supported, and clearing
the MAC capabilities, reverse the if() condition and use it to set the
capabilities instead.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1qZAXn-005pUb-SP@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Move priv->phylink_config.mac_managed_pm to be along side the other
phylink initialisations.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1qZAXi-005pUV-Nq@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Use phylink_limit_mac_speed() to limit the MAC capabilities rather
than coding this for each speed.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1qZAXO-005pU7-61@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
We have a local variable for priv->plat->mdio_bus_data, which we use
later in the conditional if() block, but we evaluate the above within
the conditional expression. Use mdio_bus_data instead. Since these
will be the only two users of this local variable, move its assignment
just before the if().
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1qZAXJ-005pU1-1z@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Move the initialisation of the fwnode variable closer to its use
site, rather than scattered throughout stmmac_phy_setup().
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1qZAXD-005pTv-TN@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
All users of plat->phylink_node first convert it to a fwnode. Rather
than repeatedly convert to a fwnode, store it as a fwnode. To reflect
this change, call it plat->port_node instead - it is used for more
than just phylink.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1qZAX8-005pTo-OT@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add a function which can be used to limit the phylink MAC capabilities
to an upper speed limit.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1qZAX3-005pTi-K1@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When an skb fails to be forwarded to the peer(e.g., skb data buffer
length exceeds MTU), it will not be added to the peer's receive queue.
Therefore, we should schedule the peer's NAPI poll function only when
skb forwarding is successful to avoid unnecessary overhead.
Signed-off-by: Liang Chen <liangchen.linux@gmail.com>
Link: https://lore.kernel.org/r/20230824123131.7673-1-liangchen.linux@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Daniel Borkmann says:
====================
pull-request: bpf-next 2023-08-25
We've added 87 non-merge commits during the last 8 day(s) which contain
a total of 104 files changed, 3719 insertions(+), 4212 deletions(-).
The main changes are:
1) Add multi uprobe BPF links for attaching multiple uprobes
and usdt probes, which is significantly faster and saves extra fds,
from Jiri Olsa.
2) Add support BPF cpu v4 instructions for arm64 JIT compiler,
from Xu Kuohai.
3) Add support BPF cpu v4 instructions for riscv64 JIT compiler,
from Pu Lehui.
4) Fix LWT BPF xmit hooks wrt their return values where propagating
the result from skb_do_redirect() would trigger a use-after-free,
from Yan Zhai.
5) Fix a BPF verifier issue related to bpf_kptr_xchg() with local kptr
where the map's value kptr type and locally allocated obj type
mismatch, from Yonghong Song.
6) Fix BPF verifier's check_func_arg_reg_off() function wrt graph
root/node which bypassed reg->off == 0 enforcement,
from Kumar Kartikeya Dwivedi.
7) Lift BPF verifier restriction in networking BPF programs to treat
comparison of packet pointers not as a pointer leak,
from Yafang Shao.
8) Remove unmaintained XDP BPF samples as they are maintained
in xdp-tools repository out of tree, from Toke Høiland-Jørgensen.
9) Batch of fixes for the tracing programs from BPF samples in order
to make them more libbpf-aware, from Daniel T. Lee.
10) Fix a libbpf signedness determination bug in the CO-RE relocation
handling logic, from Andrii Nakryiko.
11) Extend libbpf to support CO-RE kfunc relocations. Also follow-up
fixes for bpf_refcount shared ownership implementation,
both from Dave Marchevsky.
12) Add a new bpf_object__unpin() API function to libbpf,
from Daniel Xu.
13) Fix a memory leak in libbpf to also free btf_vmlinux
when the bpf_object gets closed, from Hao Luo.
14) Small error output improvements to test_bpf module, from Helge Deller.
* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (87 commits)
selftests/bpf: Add tests for rbtree API interaction in sleepable progs
bpf: Allow bpf_spin_{lock,unlock} in sleepable progs
bpf: Consider non-owning refs to refcounted nodes RCU protected
bpf: Reenable bpf_refcount_acquire
bpf: Use bpf_mem_free_rcu when bpf_obj_dropping refcounted nodes
bpf: Consider non-owning refs trusted
bpf: Ensure kptr_struct_meta is non-NULL for collection insert and refcount_acquire
selftests/bpf: Enable cpu v4 tests for RV64
riscv, bpf: Support unconditional bswap insn
riscv, bpf: Support signed div/mod insns
riscv, bpf: Support 32-bit offset jmp insn
riscv, bpf: Support sign-extension mov insns
riscv, bpf: Support sign-extension load insns
riscv, bpf: Fix missing exception handling and redundant zext for LDX_B/H/W
samples/bpf: Add note to README about the XDP utilities moved to xdp-tools
samples/bpf: Cleanup .gitignore
samples/bpf: Remove the xdp_sample_pkts utility
samples/bpf: Remove the xdp1 and xdp2 utilities
samples/bpf: Remove the xdp_rxq_info utility
samples/bpf: Remove the xdp_redirect* utilities
...
====================
Link: https://lore.kernel.org/r/20230825194319.12727-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The second pull request for v6.6, this time with both stack and driver
changes. Unusually we have only one major new feature but lots of
small cleanup all over, I guess this is due to people have been on
vacation the last month.
Major changes:
rtw89
* Introduce Time Averaged SAR (TAS) support
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Merge tag 'wireless-next-2023-08-25' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next
Kalle Valo says:
====================
wireless-next patches for v6.6
The second pull request for v6.6, this time with both stack and driver
changes. Unusually we have only one major new feature but lots of
small cleanup all over, I guess this is due to people have been on
vacation the last month.
Major changes:
rtw89
- Introduce Time Averaged SAR (TAS) support
* tag 'wireless-next-2023-08-25' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (114 commits)
wifi: rtlwifi: rtl8723: Remove unused function rtl8723_cmd_send_packet()
wifi: rtw88: usb: kill and free rx urbs on probe failure
wifi: rtw89: Fix clang -Wimplicit-fallthrough in rtw89_query_sar()
wifi: rtw89: phy: modify register setting of ENV_MNTR, PHYSTS and DIG
wifi: rtw89: phy: add phy_gen_def::cr_base to support WiFi 7 chips
wifi: rtw89: mac: define register address of rx_filter to generalize code
wifi: rtw89: mac: define internal memory address for WiFi 7 chip
wifi: rtw89: mac: generalize code to indirectly access WiFi internal memory
wifi: rtw89: mac: add mac_gen_def::band1_offset to map MAC band1 register address
wifi: wlcore: sdio: Use module_sdio_driver macro to simplify the code
wifi: rtw89: initialize multi-channel handling
wifi: rtw89: provide functions to configure NoA for beacon update
wifi: rtw89: call rtw89_chan_get() by vif chanctx if aware of vif
wifi: rtw89: sar: let caller decide the center frequency to query
wifi: rtw89: refine rtw89_correct_cck_chan() by rtw89_hw_to_nl80211_band()
wifi: rtw89: add function prototype for coex request duration
Fix nomenclature for USB and PCI wireless devices
wifi: ath: Use is_multicast_ether_addr() to check multicast Ether address
wifi: ath12k: Remove unused declarations
wifi: ath12k: add check max message length while scanning with extraie
...
====================
Link: https://lore.kernel.org/r/20230825132230.A0833C433C8@smtp.kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
- Introduce HCI_QUIRK_BROKEN_LE_CODED
- Add support for PA/BIG sync
- Add support for NXP IW624 chipset
- Add support for Qualcomm WCN7850
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Merge tag 'for-net-next-2023-08-24' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next
Luiz Augusto von Dentz says:
====================
bluetooth-next pull request for net-next:
- Introduce HCI_QUIRK_BROKEN_LE_CODED
- Add support for PA/BIG sync
- Add support for NXP IW624 chipset
- Add support for Qualcomm WCN7850
* tag 'for-net-next-2023-08-24' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next:
Bluetooth: btusb: Do not call kfree_skb() under spin_lock_irqsave()
Bluetooth: btusb: Fix quirks table naming
Bluetooth: HCI: Introduce HCI_QUIRK_BROKEN_LE_CODED
Bluetooth: btintel: Send new command for PPAG
Bluetooth: ISO: Add support for periodic adv reports processing
Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early
Bluetooth: hci_core: Fix missing instances using HCI_MAX_AD_LENGTH
Bluetooth: ISO: Use defer setup to separate PA sync and BIG sync
Bluetooth: qca: add support for WCN7850
Bluetooth: qca: use switch case for soc type behavior
dt-bindings: net: bluetooth: qualcomm: document WCN7850 chipset
Bluetooth: hci_conn: Fix sending BT_HCI_CMD_LE_CREATE_CONN_CANCEL
Bluetooth: hci_sync: Fix UAF in hci_disconnect_all_sync
Bluetooth: btnxpuart: Improve inband Independent Reset handling
Bluetooth: btnxpuart: Add support for IW624 chipset
Bluetooth: btnxpuart: Remove check for CTS low after FW download
====================
Link: https://lore.kernel.org/r/20230824201458.2577-1-luiz.dentz@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Dave Marchevsky says:
====================
BPF Refcount followups 3: bpf_mem_free_rcu refcounted nodes
This series is the third of three (or more) followups to address issues
in the bpf_refcount shared ownership implementation discovered by Kumar.
This series addresses the use-after-free scenario described in [0]. The
first followup series ([1]) also attempted to address the same
use-after-free, but only got rid of the splat without addressing the
underlying issue. After this series the underyling issue is fixed and
bpf_refcount_acquire can be re-enabled.
The main fix here is migration of bpf_obj_drop to use
bpf_mem_free_rcu. To understand why this fixes the issue, let us consider
the example interleaving provided by Kumar in [0]:
CPU 0 CPU 1
n = bpf_obj_new
lock(lock1)
bpf_rbtree_add(rbtree1, n)
m = bpf_rbtree_acquire(n)
unlock(lock1)
kptr_xchg(map, m) // move to map
// at this point, refcount = 2
m = kptr_xchg(map, NULL)
lock(lock2)
lock(lock1) bpf_rbtree_add(rbtree2, m)
p = bpf_rbtree_first(rbtree1) if (!RB_EMPTY_NODE) bpf_obj_drop_impl(m) // A
bpf_rbtree_remove(rbtree1, p)
unlock(lock1)
bpf_obj_drop(p) // B
bpf_refcount_acquire(m) // use-after-free
...
Before this series, bpf_obj_drop returns memory to the allocator using
bpf_mem_free. At this point (B in the example) there might be some
non-owning references to that memory which the verifier believes are valid,
but where the underlying memory was reused for some other allocation.
Commit 7793fc3bab ("bpf: Make bpf_refcount_acquire fallible for
non-owning refs") attempted to fix this by doing refcount_inc_non_zero
on refcount_acquire in instead of refcount_inc under the assumption that
preventing erroneous incr-on-0 would be sufficient. This isn't true,
though: refcount_inc_non_zero must *check* if the refcount is zero, and
the memory it's checking could have been reused, so the check may look
at and incr random reused bytes.
If we wait to reuse this memory until all non-owning refs that could
point to it are gone, there is no possibility of this scenario
happening. Migrating bpf_obj_drop to use bpf_mem_free_rcu for refcounted
nodes accomplishes this.
For such nodes, the validity of their underlying memory is now tied to
RCU critical section. This matches MEM_RCU trustedness
expectations, so the series takes the opportunity to more explicitly
mark this trustedness state.
The functional effects of trustedness changes here are rather small.
This is largely due to local kptrs having separate verifier handling -
with implicit trustedness assumptions - than arbitrary kptrs.
Regardless, let's take the opportunity to move towards a world where
trustedness is more explicitly handled.
Changelog:
v1 -> v2: https://lore.kernel.org/bpf/20230801203630.3581291-1-davemarchevsky@fb.com/
Patch 1 ("bpf: Ensure kptr_struct_meta is non-NULL for collection insert and refcount_acquire")
* Spent some time experimenting with a better approach as per convo w/
Yonghong on v1's patch. It started getting too complex, so left unchanged
for now. Yonghong was fine with this approach being shipped.
Patch 2 ("bpf: Consider non-owning refs trusted")
* Add Yonghong ack
Patch 3 ("bpf: Use bpf_mem_free_rcu when bpf_obj_dropping refcounted nodes")
* Add Yonghong ack
Patch 4 ("bpf: Reenable bpf_refcount_acquire")
* Add Yonghong ack
Patch 5 ("bpf: Consider non-owning refs to refcounted nodes RCU protected")
* Undo a nonfunctional whitespace change that shouldn't have been included
(Yonghong)
* Better logging message when complaining about rcu_read_{lock,unlock} in
rbtree cb (Alexei)
* Don't invalidate_non_owning_refs when processing bpf_rcu_read_unlock
(Yonghong, Alexei)
Patch 6 ("[RFC] bpf: Allow bpf_spin_{lock,unlock} in sleepable prog's RCU CS")
* preempt_{disable,enable} in __bpf_spin_{lock,unlock} (Alexei)
* Due to this we can consider spin_lock CS an RCU-sched read-side CS (per
RCU/Design/Requirements/Requirements.rst). Modify in_rcu_cs accordingly.
* no need to check for !in_rcu_cs before allowing bpf_spin_{lock,unlock}
(Alexei)
* RFC tag removed and renamed to "bpf: Allow bpf_spin_{lock,unlock} in
sleepable progs"
Patch 7 ("selftests/bpf: Add tests for rbtree API interaction in sleepable progs")
* Remove "no explicit bpf_rcu_read_lock" failure test, add similar success
test (Alexei)
Summary of patch contents, with sub-bullets being leading questions and
comments I think are worth reviewer attention:
* Patches 1 and 2 are moreso documententation - and
enforcement, in patch 1's case - of existing semantics / expectations
* Patch 3 changes bpf_obj_drop behavior for refcounted nodes such that
their underlying memory is not reused until RCU grace period elapses
* Perhaps it makes sense to move to mem_free_rcu for _all_
non-owning refs in the future, not just refcounted. This might
allow custom non-owning ref lifetime + invalidation logic to be
entirely subsumed by MEM_RCU handling. IMO this needs a bit more
thought and should be tackled outside of a fix series, so it's not
attempted here.
* Patch 4 re-enables bpf_refcount_acquire as changes in patch 3 fix
the remaining use-after-free
* One might expect this patch to be last in the series, or last
before selftest changes. Patches 5 and 6 don't change
verification or runtime behavior for existing BPF progs, though.
* Patch 5 brings the verifier's understanding of refcounted node
trustedness in line with Patch 4's changes
* Patch 6 allows some bpf_spin_{lock, unlock} calls in sleepable
progs. Marked RFC for a few reasons:
* bpf_spin_{lock,unlock} haven't been usable in sleepable progs
since before the introduction of bpf linked list and rbtree. As
such this feels more like a new feature that may not belong in
this fixes series.
* Patch 7 adds tests
[0]: https://lore.kernel.org/bpf/atfviesiidev4hu53hzravmtlau3wdodm2vqs7rd7tnwft34e3@xktodqeqevir/
[1]: https://lore.kernel.org/bpf/20230602022647.1571784-1-davemarchevsky@fb.com/
====================
Link: https://lore.kernel.org/r/20230821193311.3290257-1-davemarchevsky@fb.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Confirm that the following sleepable prog states fail verification:
* bpf_rcu_read_unlock before bpf_spin_unlock
* RCU CS will last at least as long as spin_lock CS
Also confirm that correct usage passes verification, specifically:
* Explicit use of bpf_rcu_read_{lock, unlock} in sleepable test prog
* Implied RCU CS due to spin_lock CS
None of the selftest progs actually attach to bpf_testmod's
bpf_testmod_test_read.
Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com>
Link: https://lore.kernel.org/r/20230821193311.3290257-8-davemarchevsky@fb.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Commit 9e7a4d9831 ("bpf: Allow LSM programs to use bpf spin locks")
disabled bpf_spin_lock usage in sleepable progs, stating:
Sleepable LSM programs can be preempted which means that allowng spin
locks will need more work (disabling preemption and the verifier
ensuring that no sleepable helpers are called when a spin lock is
held).
This patch disables preemption before grabbing bpf_spin_lock. The second
requirement above "no sleepable helpers are called when a spin lock is
held" is implicitly enforced by current verifier logic due to helper
calls in spin_lock CS being disabled except for a few exceptions, none
of which sleep.
Due to above preemption changes, bpf_spin_lock CS can also be considered
a RCU CS, so verifier's in_rcu_cs check is modified to account for this.
Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com>
Link: https://lore.kernel.org/r/20230821193311.3290257-7-davemarchevsky@fb.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
An earlier patch in the series ensures that the underlying memory of
nodes with bpf_refcount - which can have multiple owners - is not reused
until RCU grace period has elapsed. This prevents
use-after-free with non-owning references that may point to
recently-freed memory. While RCU read lock is held, it's safe to
dereference such a non-owning ref, as by definition RCU GP couldn't have
elapsed and therefore underlying memory couldn't have been reused.
From the perspective of verifier "trustedness" non-owning refs to
refcounted nodes are now trusted only in RCU CS and therefore should no
longer pass is_trusted_reg, but rather is_rcu_reg. Let's mark them
MEM_RCU in order to reflect this new state.
Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com>
Link: https://lore.kernel.org/r/20230821193311.3290257-6-davemarchevsky@fb.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Now that all reported issues are fixed, bpf_refcount_acquire can be
turned back on. Also reenable all bpf_refcount-related tests which were
disabled.
This a revert of:
* commit f3514a5d67 ("selftests/bpf: Disable newly-added 'owner' field test until refcount re-enabled")
* commit 7deca5eae8 ("bpf: Disable bpf_refcount_acquire kfunc calls until race conditions are fixed")
Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20230821193311.3290257-5-davemarchevsky@fb.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This is the final fix for the use-after-free scenario described in
commit 7793fc3bab ("bpf: Make bpf_refcount_acquire fallible for
non-owning refs"). That commit, by virtue of changing
bpf_refcount_acquire's refcount_inc to a refcount_inc_not_zero, fixed
the "refcount incr on 0" splat. The not_zero check in
refcount_inc_not_zero, though, still occurs on memory that could have
been free'd and reused, so the commit didn't properly fix the root
cause.
This patch actually fixes the issue by free'ing using the recently-added
bpf_mem_free_rcu, which ensures that the memory is not reused until
RCU grace period has elapsed. If that has happened then
there are no non-owning references alive that point to the
recently-free'd memory, so it can be safely reused.
Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20230821193311.3290257-4-davemarchevsky@fb.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Recent discussions around default kptr "trustedness" led to changes such
as commit 6fcd486b3a ("bpf: Refactor RCU enforcement in the
verifier."). One of the conclusions of those discussions, as expressed
in code and comments in that patch, is that we'd like to move away from
'raw' PTR_TO_BTF_ID without some type flag or other register state
indicating trustedness. Although PTR_TRUSTED and PTR_UNTRUSTED flags mark
this state explicitly, the verifier currently considers trustedness
implied by other register state. For example, owning refs to graph
collection nodes must have a nonzero ref_obj_id, so they pass the
is_trusted_reg check despite having no explicit PTR_{UN}TRUSTED flag.
This patch makes trustedness of non-owning refs to graph collection
nodes explicit as well.
By definition, non-owning refs are currently trusted. Although the ref
has no control over pointee lifetime, due to non-owning ref clobbering
rules (see invalidate_non_owning_refs) dereferencing a non-owning ref is
safe in the critical section controlled by bpf_spin_lock associated with
its owning collection.
Note that the previous statement does not hold true for nodes with shared
ownership due to the use-after-free issue that this series is
addressing. True shared ownership was disabled by commit 7deca5eae8
("bpf: Disable bpf_refcount_acquire kfunc calls until race conditions are fixed"),
though, so the statement holds for now. Further patches in the series will change
the trustedness state of non-owning refs before re-enabling
bpf_refcount_acquire.
Let's add NON_OWN_REF type flag to BPF_REG_TRUSTED_MODIFIERS such that a
non-owning ref reg state would pass is_trusted_reg check. Somewhat
surprisingly, this doesn't result in any change to user-visible
functionality elsewhere in the verifier: graph collection nodes are all
marked MEM_ALLOC, which tends to be handled in separate codepaths from
"raw" PTR_TO_BTF_ID. Regardless, let's be explicit here and document the
current state of things before changing it elsewhere in the series.
Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20230821193311.3290257-3-davemarchevsky@fb.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
It's straightforward to prove that kptr_struct_meta must be non-NULL for
any valid call to these kfuncs:
* btf_parse_struct_metas in btf.c creates a btf_struct_meta for any
struct in user BTF with a special field (e.g. bpf_refcount,
{rb,list}_node). These are stored in that BTF's struct_meta_tab.
* __process_kf_arg_ptr_to_graph_node in verifier.c ensures that nodes
have {rb,list}_node field and that it's at the correct offset.
Similarly, check_kfunc_args ensures bpf_refcount field existence for
node param to bpf_refcount_acquire.
* So a btf_struct_meta must have been created for the struct type of
node param to these kfuncs
* That BTF and its struct_meta_tab are guaranteed to still be around.
Any arbitrary {rb,list} node the BPF program interacts with either:
came from bpf_obj_new or a collection removal kfunc in the same
program, in which case the BTF is associated with the program and
still around; or came from bpf_kptr_xchg, in which case the BTF was
associated with the map and is still around
Instead of silently continuing with NULL struct_meta, which caused
confusing bugs such as those addressed by commit 2140a6e342 ("bpf: Set
kptr_struct_meta for node param to list and rbtree insert funcs"), let's
error out. Then, at runtime, we can confidently say that the
implementations of these kfuncs were given a non-NULL kptr_struct_meta,
meaning that special-field-specific functionality like
bpf_obj_free_fields and the bpf_obj_drop change introduced later in this
series are guaranteed to execute.
This patch doesn't change functionality, just makes it easier to reason
about existing functionality.
Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20230821193311.3290257-2-davemarchevsky@fb.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
The function rtl8723_cmd_send_packet() is not used anywhere, so remove it.
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230824062339.1885385-1-ruanjinjie@huawei.com
After rtw_usb_alloc_rx_bufs() has been called rx urbs have been
allocated and must be freed in the error path. After rtw_usb_init_rx()
has been called they are submitted, so they also must be killed.
Add these forgotten steps to the probe error path.
Besides the lost memory this also fixes a problem when the driver
fails to download the firmware in rtw_chip_info_setup(). In this
case it can happen that the completion of the rx urbs handler runs
at a time when we already freed our data structures resulting in
a kernel crash.
Fixes: a82dfd33d1 ("wifi: rtw88: Add common USB chip support")
Cc: stable@vger.kernel.org
Reported-by: Ilgaz Öcal <ilgaz@ilgaz.gen.tr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230823075021.588596-1-s.hauer@pengutronix.de
clang warns (or errors with CONFIG_WERROR=y):
drivers/net/wireless/realtek/rtw89/sar.c:216:3: error: unannotated fall-through between switch labels [-Werror,-Wimplicit-fallthrough]
216 | case RTW89_TAS_STATE_DPR_FORBID:
| ^
drivers/net/wireless/realtek/rtw89/sar.c:216:3: note: insert 'break;' to avoid fall-through
216 | case RTW89_TAS_STATE_DPR_FORBID:
| ^
| break;
1 error generated.
Clang is a little more pedantic than GCC, which does not warn when
falling through to a case that is just break or return. Clang's version
is more in line with the kernel's own stance in deprecated.rst, which
states that all switch/case blocks must end in either break,
fallthrough, continue, goto, or return. Add the missing break to silence
the warning.
Closes: https://github.com/ClangBuiltLinux/linux/issues/1921
Fixes: eb2624f55a ("wifi: rtw89: Introduce Time Averaged SAR (TAS) feature")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230822-rtw89-tas-clang-implicit-fallthrough-v1-1-5cb73f0fa976@kernel.org
The ENV_MNTR(environment monitor) is the dynamic mechanism which based on
the HW of CCX(Cisco Compatible Extensions) which provide the channel
loading and noisy level indicator to debug or support the 802.11k. The
PHYSTS provide the detail PHY information per packet we received for
debugging. The DIG(dynamic initial gain) is the dynamic mechanism to
adjust the packet detect power level by received signal strength to avoid
false detection of the WiFi packet.
The address of registers used for ENV_MNTR, PHYSTS and DIG of WiFi 7 IC
are different with WiFi 6 series, so we modify the method to access the
register address in order to compatible with all WiFi 7 and 6 ICs.
Signed-off-by: Cheng-Chieh Hsieh <cj.hsieh@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230822125822.23817-7-pkshih@realtek.com
cr_base is base address of PHY control register. The base of WiFi 6 and 7
chips are 0x1_0000 and 0x2_0000 respectively, so define them accordingly.
For example, if PHY address is 0x1330, absolute address is 0x1_1330 for
WiFi 6 chips, and 0x2_1330 for WiFi 7 chips.
Meanwhile, there are two copies of PHY hardware named PHY0 and PHY1. The
offset between them is 0x2_0000, so the base address of PHY0 and PHY1 are
0x2_0000 and 0x4_0000 respectively.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230822125822.23817-6-pkshih@realtek.com
rx_filter is used to decide which kind of packets are received to driver,
or just dropped by MAC layer to reduce bus traffic.
The bit definitions of old and new chips are the sames, but only address
is changed, so define a field to generalize usage.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230822125822.23817-5-pkshih@realtek.com
Define base address of WiFi 7 internal memory according to design to
provide the same functions as existing WiFi 6 chips.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230822125822.23817-4-pkshih@realtek.com
To diagnose abnormal behavior, we need to dump certain internal memory.
For example, dump security CAM when debugging encryption/decryption
problems, or dump BA CAM when debugging abnormal BlockAck.
Since the indirect address and internal memory base address are different
between WiFi 6 and 7 chips, add fields to reuse codes.
Also, only WiFi 6 chips initialize DMAC and CMAC tables via this indirect
interface, so no need to change the constant register address, and
new firmware will help to initialize these tables.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230822125822.23817-3-pkshih@realtek.com
There are two copies of MAC hardware called band0 and band1. Basically,
the only difference between them is base address, so we can share functions
with a 'band' (or 'mac_idx') argument.
The offset of base address of WiFi 6 and 7 are 0x2000 and 0x4000
respectively, so add band1_offset field to new introduced struct
mac_gen_def to possibly reuse functions.
Using below spatch script to convert callers:
@@
expression reg, band;
@@
- rtw89_mac_reg_by_idx(reg, band)
+ rtw89_mac_reg_by_idx(rtwdev, reg, band)
@@
expression reg, port, band;
@@
- rtw89_mac_reg_by_port(reg, port, band)
+ rtw89_mac_reg_by_port(rtwdev, reg, port, band)
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230822125822.23817-2-pkshih@realtek.com
