If link_conf_dereference_protected() or mt7996_vif_link()
or link_sta_dereference_protected() fail the code jumps to
the error_unlink label and returns ret which is uninitialised.
Fix this by setting err before jumping to error_unlink.
Fixes: c7e4fc362443 ("wifi: mt76: mt7996: Update mt7996_mcu_add_sta to MLO support")
Fixes: dd82a9e02c05 ("wifi: mt76: mt7996: Rely on mt7996_sta_link in sta_add/sta_remove callbacks")
Signed-off-by: Qasim Ijaz <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
A warning on driver removal started occurring after commit 9dd05df8403b
("net: warn if NAPI instance wasn't shut down"). Disable tx napi before
deleting it in mt76_dma_cleanup().
WARNING: CPU: 4 PID: 18828 at net/core/dev.c:7288 __netif_napi_del_locked+0xf0/0x100
CPU: 4 UID: 0 PID: 18828 Comm: modprobe Not tainted 6.15.0-rc4 #4 PREEMPT(lazy)
Hardware name: ASUS System Product Name/PRIME X670E-PRO WIFI, BIOS 3035 09/05/2024
RIP: 0010:__netif_napi_del_locked+0xf0/0x100
Call Trace:
<TASK>
mt76_dma_cleanup+0x54/0x2f0 [mt76]
mt7921_pci_remove+0xd5/0x190 [mt7921e]
pci_device_remove+0x47/0xc0
device_release_driver_internal+0x19e/0x200
driver_detach+0x48/0x90
bus_remove_driver+0x6d/0xf0
pci_unregister_driver+0x2e/0xb0
__do_sys_delete_module.isra.0+0x197/0x2e0
do_syscall_64+0x7b/0x160
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Tested with mt7921e but the same pattern can be actually applied to other
mt76 drivers calling mt76_dma_cleanup() during removal. Tx napi is enabled
in their *_dma_init() functions and only toggled off and on again inside
their suspend/resume/reset paths. So it should be okay to disable tx
napi in such a generic way.
Found by Linux Verification Center (linuxtesting.org).
Fixes: 2ac515a5d74f ("mt76: mt76x02: use napi polling for tx cleanup")
Cc: [email protected]
Signed-off-by: Fedor Pchelkin <[email protected]>
Tested-by: Ming Yen Hsieh <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
This reverts commit 3b522cadedfe6e9e0e8193d7d4ab5aa8d0c73209.
The MTK connac3 has introduced new hardware, SDO (Software Defined
Offload), to offload the process of filling the TX descriptor. Initially,
there were some issues, but after several fixes, it should now be stable,
allowing us to revert this commit.
Additionally, activating SDO is essential for the proper functioning of
features like TX checksum offload.
Signed-off-by: Shayne Chen <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
devm_kasprintf() can return a NULL pointer on failure,but this
returned value in mt7996_thermal_init() is not checked.
Add NULL check in mt7996_thermal_init(), to handle kernel NULL
pointer dereference error.
Fixes: 69d54ce7491d ("wifi: mt76: mt7996: switch to single multi-radio wiphy")
Signed-off-by: Charles Han <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
The definition of MT_RX_SEL (for rdd_rx_sel) is mixed with the
definition of HWRDD idx.
For example, MT_RX_SEL2 is for background HWRDD idx, not an
option of rdd_rx_sel.
Additionally, HWRDD idx does not exactly map to band idx for
Connac 3 chips. So, add mt7996_get_rdd_idx as a helper function.
Finally, remove some parts of the code inherited from the legacy chips.
For instance,
1. rdd_state is used for single-band-dual-HWRDD chips (for 80+80),
especially the 76xx series.
2. rdd_rx_sel is also used for single-band-dual-HWRDD chips
rx_sel = 0 => RDD0 for WF0, RDD1 for WF2
rx_sel = 1 => RDD0 for WF1, RDD1 for WF3
Chip Variants | 5G rdd idx | Background rdd idx
---------------------------|----------------|-------------------
MT7996 (except 205/255) | 1 | 2
MT7992 | 1 | 2
MT7990 | 1 | 2
Signed-off-by: StanleyYP Wang <[email protected]>
Reviewed-by: Shayne Chen <[email protected]>
Reviewed-by: Money Wang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
The definition of MT_RX_SEL (for rdd_rx_sel) is mixed with the
definition of HWRDD idx.
For example, MT_RX_SEL2 is for background HWRDD idx, not an option
of rdd_rx_sel.
Therefore, add mt7915_get_rdd_idx as a helper function to get the
HWRDD idx for each variants.
Additionally, remove some parts of the code inherited from the legacy
chips.
For instance,
1. rdd_state is used for single-band-dual-HWRDD chips (for 80+80),
especially the 76xx series.
2. rdd_rx_sel is also used for single-band-dual-HWRDD chips
rx_sel = 0 => RDD0 for WF0, RDD1 for WF2
rx_sel = 1 => RDD0 for WF1, RDD1 for WF3
Chip Variants | 5G rdd idx(=bandidx)| Background rdd idx
-------------------------------|---------------------|-------------------
MT7915A | 0 | 2
MT7915D | 1 | 2
MT7916 2G + 5G (2T2R+1R) | 1 | 2
MT7916 2G + 5G (3T3R) | 1 | N/A
MT7981 2G + 5G | 1 | N/A
MT7986 2G + 5G (one adie DBDC) | 1 | N/A
MT7986 5G (one adie) | 1 (bandidx=MT_BAND1)| N/A
MT7986 2G + 5G (dual adie) | 1 | N/A
Signed-off-by: StanleyYP Wang <[email protected]>
Reviewed-by: Shayne Chen <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
Some of the variants do not support background radar, so add a
helper to report background radar capability.
For mt7916, only the variant of 5G 2T2R + 1R supports background
radar.
Signed-off-by: StanleyYP Wang <[email protected]>
Reviewed-by: Shayne Chen <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
The chipset name (i.e., brand name) used by the driver may cause confusion
with the PCI device ID when adding support for new chipsets.
| Chipset name | PCI device id |
|--------------|----------------|
| 7996 | 0x7990, 0x7991 |
| 7992 | 0x7992, 0x799a |
| 7990 | 0x7993, 0x799b |
To prevent confusion, replace the code that directly uses the device ID
with macros. This is a preliminary patch to support mt7990 chipset.
Co-developed-by: Peter Chiu <[email protected]>
Signed-off-by: Peter Chiu <[email protected]>
Signed-off-by: Shayne Chen <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
The 'continue' statements need to be under spinlock, since
the spinlock needs to be held as a loop invariant.
Fixes: 0762bdd30279 ("wifi: mt76: mt7996: rework mt7996_mac_sta_rc_work to support MLO")
Signed-off-by: Johannes Berg <[email protected]>
Since the `Revert wifi: mt76: mt7925: Update mt7925_mcu_uni_[tx,rx]_ba for MLO`
was not completely clean, submit this patch to fully clean it up.
Cc: [email protected]
Fixes: 73915469c55a ("Revert "wifi: mt76: mt7925: Update mt7925_mcu_uni_[tx,rx]_ba for MLO"")
Signed-off-by: Ming Yen Hsieh <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
Refine the disconnection cleanup process for MLO. It introduces a dedicated
function to handle device removal, ensuring proper resource cleanup for both
BSS and device information.
Fixes: 21e40c17361e ("wifi: mt76: mt7925: adjust rm BSS flow to prevent next connection failure")
Signed-off-by: Ming Yen Hsieh <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
The wcid idx and band idx in the TXS are sometimes mismatched since the
FW will select a transmission link according to a private algorithm.
That is, the wcid idx in the TXS would be the one registered by the
driver rather than the actual wcid idx used during transmission.
However, the band idx in the TXS is the band select for transmission.
Therefore, we should get the driver-registered wcid in order
to notify the driver the packet has been acked; otherwise,
the driver will be unable to match the transmitted packet and its TXS.
This is a preliminary patch to enable MLO for MT7996 driver.
Co-developed-by: Bo Jiao <[email protected]>
Signed-off-by: Bo Jiao <[email protected]>
Co-developed-by: Peter Chiu <[email protected]>
Signed-off-by: Peter Chiu <[email protected]>
Signed-off-by: Shayne Chen <[email protected]>
Co-developed-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Lorenzo Bianconi <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
