One USB data buffer can contain multiple received network
packets. If that's the case, they're processed this way:
1. Original buffer is cloned
2. Original buffer is trimmed to contain only the first
network packet
3. This first network packet is passed to network stack
4. Cloned buffer is trimmed to eliminate the first network
packet
5. Repeat with the cloned buffer until there are no more
network packets inside
However, if the space remaining in original buffer after
the first network packet is not enough to contain at least
another network packet descriptor, it is not cloned.
The loop parsing this packets ended if remaining space == 0.
But if the remaining space was > 0 but < packet descriptor
size, another iteration of the loop was done, processing again
the previous packet because cloning didn't happen. Moreover,
the ownership of this packet had been passed to network
stack in the previous iteration.
This patch ensures that no extra iteration is done if the
remaining size is not enough for one packet, and also avoid
the first iteration for the same reason.
Probably this doesn't happen in practice, but can happen
theoretically.
Signed-off-by: Íñigo Huguet <ihuguet@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210511071926.8951-1-ihuguet@redhat.com
Based on 2001:3319 and 2357:0109 which I used to test the fix and
0bda:818b and 2357:0108 for which I found efuse dumps online.
== 2357:0109 ==
=== Before ===
Vendor: Realtek
Product: \x03802.11n NI
Serial:
=== After ===
Vendor: Realtek
Product: 802.11n NIC
Serial not available.
== 2001:3319 ==
=== Before ===
Vendor: Realtek
Product: Wireless N
Serial: no USB Adap
=== After ===
Vendor: Realtek
Product: Wireless N Nano USB Adapter
Serial not available.
Signed-off-by: Pascal Terjan <pterjan@google.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210424172959.1559890-1-pterjan@google.com
Disable chip full reset just during device probing but allow
it during hw restart.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Set macwork timeout value according to runtime-pm in order to reduce
power consumption
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Allow the user to enable runtime-pm for mt7663s driver
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Similar to mt7663e, rely on mt76_connac_pm_ref/mt76_connac_pm_unref to
check PM state and increment/decrement wake counter
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
As already done for mt7921 and mt7663e, rely on pm reference counting in
drv/fw_own
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
In order to support runtime-pm for sdio, do not run mt76_txq_schedule
directly, but schedule tx_worker instead
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Disable TWT REQ/RES mac capabilities since TWT is not supported
yet in mt7915/mt7921.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
The iv from RXD is only for TKIP_RSC/CCMP_PN/GCMP_PN, and it needs a
check for CCMP header insertion. Move mt76_cipher_type to mt76.h to
reduce duplicated code.
Signed-off-by: Xing Song <xing.song@mediatek.com>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Fix the maximum size of the coredump generated with current mt7921
firmware. Otherwise, a truncated coredump would be reported to userland
via dev_coredumpv.
Also, there is an additional error handling enhanced in the patch to avoid
the possible invalid buffer access when the system failed to create the
buffer to hold the coredump.
Fixes: 0da3c795d0 ("mt76: mt7921: add coredump support")
Co-developed-by: YN Chen <YN.Chen@mediatek.com>
Signed-off-by: YN Chen <YN.Chen@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Introduce ds_enable switch to fully control fw deep_sleep capability
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Limit tx power for single-sku according to userlevel power.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Introduce mt7921_update_txs routine in order to improve code readability
for tx timestamp parsing/configuration.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Add addtional the deep sleep control to runtime-pm knob to
allow us to control driver switching between the full power
mode and the deep sleep mode the firmware is able to support.
Reviewed-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Enable the deep sleep mode with that firmware is able to trap into
the doze state at runtime to reduce the power consumption further.
The deep sleep mode is not allowed in the STA state transition with
the firmware to have the fast connection experience as we've done in
the full power mode
Reviewed-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
The value of station mode is always 0.
Fixed: 00b2e16e00 ("mt76: mt7915: add TxBF capabilities")
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
header files should use '/* SPDX ... */
Change from c file comment syle to header style
Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Use mt7915_mcu_set_txbf() to reduce global functions. This can be
easily extended to support other TxBF commands in further patches.
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
There are firmware or hardware issues, which are currently causing tx hangs
when attempting to use these interfaces
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Check device band capabilities before configuring single-sku
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
In order to remove duplicated code, move mt76_get_next_pkt_id routine
in mt76.h
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Reduce rx buffer size to 2048 for mt7921/mt7915/mt7615 since we
now support rx amsdu offload
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Maximum interval (in seconds) for schedule scan plan supported by
the offload firmware can be U16_MAX.
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
FCS error packets are filtered by default and won't be reported to
driver, so that RX fcs error and PER in testmode always show zero.
Fix this issue by reading fcs error count from hw counter.
We did't fix this issue by disabling fcs error rx filter since it may
let HW suffer some SER errors.
Fixes: 5d8a83f099 ("mt76: mt7915: implement testmode rx support")
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Move chip-specific stats dumping part before common stats dumping
to provide flexibility for per-chip driver to modify the value of
common stats.
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Introduce mt76_connac_mcu_get_nic_capability utility routine to poll
device capabilities returned by mcu fw for CE devices (mt7663/mt7921).
This is a preliminary patch to introduce 6GHz support.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Make mt7921_set_channel routine static since it is only used in main.c
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Always wake the device up before dumping the single_sku power table
otherwise the device can hang.
Fixes: ea29acc97c ("mt76: mt7921: add dumping Tx power table")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Schedule power_save work running mt76_connac_pm_unref in order to reduce
power consumption
Tested-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Fix wrong offset for pre-calibration data.
Fixes: 495184ac91 ("mt76: mt7915: add support for applying pre-calibration data")
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Patch radar parameters to match the SDK to avoid possible false alarms.
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Since now the fw reports tx rate events without polling,
mt7921_get_wtbl_info and related structures are no longer used.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Enable wep key hw offloading for sta mode. This patch fixes
WoW support for wep connections.
Tested-by: Deren.Wu <deren.wu@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
If efuse mode is used, read all values from fw during eeprom init,
which makes it more convinient to check if rf values in efuse are
properly burned.
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Firmware functions (SCS, MU ...) also require read-clear phy counters,
hence firmware prepares a global task to read shared fields out to a
shared pool to avoid concurrency. Switch to event format accordingly.
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Set MT76_RESET during mt7921_mac_reset in order to avoid packet
transmissions. Move tx scheduling at the end of reset routine.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
- Remove no-op code for queue lock/unlock, which is no longer needed
- Set a missing DMA flag
- Wait for full completion of error recovery before restarting tx
- Schedule IRQ tasklet to ensure that IRQ mask gets written
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Move wiphy interface_modes configuration in mt76_alloc_device and
mt76_alloc_phy in order to be overwritten by hw specific code
since some drivers do not support all operating modes (mt7921
supports sta only in the current codebase)
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
wakeup chip every 250ms may cause huge power consumption
try to update statistic counter only if in active status only,
and it would lead fewer power cost
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
