There is a small race window where ongoing tx activity can lead to a skb
getting added to the status tracking idr after that idr has already been
cleaned up, which will keep the wcid linked in the status poll list.
Fix this by only adding status skbs if the wcid pointer is still assigned
in dev->wcid, which gets cleared early by mt76_sta_pre_rcu_remove
Fixes: bd1e3e7b693c ("mt76: introduce packet_id idr")
Tested-by: Ben Greear <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
This reverts commit fea36e0207.
When reaching that point, a frame has always been enqueued and we need
to kick the queue
Signed-off-by: Felix Fietkau <[email protected]>
Should keep SKBs only if timeout timestamp is still after jiffies.
Otherwise, report tx status and drop it direclty.
Fixes: bd1e3e7b693c ("mt76: introduce packet_id idr")
Signed-off-by: Deren Wu <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
Do not check status timestamp before DMA completion.
Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
Substitute sk_buff_head status_list with spinlock_t status_lock since we
just need it for locking
Tested-by: [email protected]
Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
Remove mt76_wcid pointer from mt76_tx_status_check signature since it is
always set to NULL
Tested-by: [email protected]
Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
Introduce per-wcid idr to manage packet id for txs. This allow fast idr
lookup and skb queueing at the same time.
Tested-by: [email protected]
Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
Report tx rate from tx status packets instead of receving periodic mcu
event. This improves flexibility, accuracy and AQL performance, and
simplifies code flow for better readability.
Signed-off-by: Ryder Lee <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
In order to remove duplicated code, move mt76_get_next_pkt_id routine
in mt76.h
Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
Even if this is not a real issue since mt76_tx is never run with wcid set
to NULL, fix a theoretical NULL pointer dereference in mt76_tx routine
Fixes: db9f11d3433f7 ("mt76: store wcid tx rate info in one u32 reduce locking")
Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
Use ieee80211_tx_status_ext instead of ieee80211_free_skb and
ieee80211_tx_status. This makes it compatible with 802.3 encap offload
and improves performance by removing a redundant sta lookup
Signed-off-by: Felix Fietkau <[email protected]>
In order to remove duplicated code, move mt76_token_init in
mt76_alloc_device routine
Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
Move token management in mt76 common module since it is shared between
mt7615, mt7915 and mt7921 drivers
Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
since tx/rx path is now relying pm ref counting, get rid of MT76_STATE_PM
check in the tx path
Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
Introduce mt7615_tx_worker routine as mt76 tx worker callback for
mt7663.
Rely on mt76_connac_pm_ref/mt76_connac_pm_unref to check PM state and
increment/decrement wake counter
Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
Add support to send larger packet in testmode to meet requirements
of some test cases.
The limit of max packet size is determined based on tx rate mode setting.
Signed-off-by: Shayne Chen <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
Since mt76_txq_send_burst routine can report a negative error code,
check the returned value before incrementing the number of transmitted
frames in mt76_txq_schedule_list routine.
Return -EBUSY directly if the device is in reset or in power management.
Fixes: 90fdc1717b186 ("mt76: use mac80211 txq scheduling")
Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
Instead of holding it for the duration of an entire station schedule run,
which can block out competing tasks for a significant amount of time,
only hold it for scheduling one batch of packets for one station.
Improves responsiveness under load
Signed-off-by: Felix Fietkau <[email protected]>
Add testmode support for DBDC NICs (both MT7615D and MT7915D work).
Testmode data and parameters are moved from per-dev to per-phy
for maintaining the value of each band.
Signed-off-by: Shayne Chen <[email protected]>
Acked-by: Ryder Lee <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
Kernel test robot reported warning:
drivers/net/wireless/mediatek/mt76/tx.c: In function
'mt76_txq_schedule':
>> drivers/net/wireless/mediatek/mt76/tx.c:499:21: warning: variable 'q'
>> set but not used [-Wunused-but-set-variable]
499 | struct mt76_queue *q;
| ^
Reported-by: kernel test robot <[email protected]>
Signed-off-by: Souptick Joarder <[email protected]>
Signed-off-by: Kalle Valo <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Instead of stopping and waking only a single queue, handle all phy tx queues
mapped ot the same hardware queue.
Also allow the driver to block tx queues
Signed-off-by: Felix Fietkau <[email protected]>
Move hw data queues in mt76_phy from mt76_dev since mt7915 supports per
phy hw queues in dbdc mode
Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
Rely on mt76_queue instead of qid in tx_queue_skb signature.
This is a preliminary patch to move data queues in mt76_phy and add
dbdc support to mt7915 driver
Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
Move frame pad computation out of mt76_skb_adjust_pad routine.
This is a preliminary patch to introduce sdio tx aggregation.
Tested-by: Sean Wang <[email protected]>
Co-developed-by: Sean Wang <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
Since the switch to using AQL by default, mtxq->retry_q is never filled anymore
Remove it to get rid of a few more unnecessary cycles in the tx path
Signed-off-by: Felix Fietkau <[email protected]>
Now that AQL works well on all mt76 drivers, completely replace the arbitrary
burst sizing and number of bursts logic for tx scheduling.
For the short period of time in which AQL does not work well yet, limit each
stations to 16 in-flight packets that have no estimated tx time.
This should avoid filling the queue if a station connects and queues up a
large number of packets before rate control information is available, especially
with hardware rate control
Signed-off-by: Felix Fietkau <[email protected]>
mt7615 and newer drivers do not need this, since they use sequence number offload
Moving this code also reduces the number of callsites to make it easier to review
Signed-off-by: Felix Fietkau <[email protected]>
Do not tx packets in mt76_txq_send_burst() or mt76_txq_schedule_list()
if the device is in runtime-pm
Signed-off-by: Lorenzo Bianconi <[email protected]>
Reported-by: kernel test robot <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
Introduce mt76_skb_adjust_pad to reuse the code adding sdio support to
mt7615 driver and remove code duplication. Move 4B header configuration
for usb devices out of mt76_skb_adjust_pad
Signed-off-by: Lorenzo Bianconi <[email protected]>
This can be used for calibration in the manufacturing process.
It supports sending a configurable number of packets with a specific rate
and configurable tx power levels / antenna settings.
It also supports receiving packets and showing some statistics, including
packet counters and detailed RSSI information.
It will only be compiled in if CONFIG_NL80211_TESTMODE is enabled
Signed-off-by: Felix Fietkau <[email protected]>
Overwrite hw queue id for non-bufferable management frames if the hw
support always txq (altxq) in order to be in sync with mac txwi code
Fixes: cdad4874057d ("mt76: mt7615: add dma and tx queue initialization for MT7622")
Fixes: f40ac0f3d3c0 ("mt76: mt7615: introduce mt7663e support")
Suggested-by: Felix Fietkau <[email protected]>
Tested-by: Sean Wang <[email protected]>
Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
Sparse report warnings at mt76_tx_status_unlock() and mt76_tx_status_lock()
warning: context imbalance in mt76_tx_status_lock() - wrong count at exit
warning: context imbalance in mt76_tx_status_unlock() - unexpected unlock
The root cause is the additional __acquire(&dev->status_list.lock)
and __release(&dev->status_list.unlock) called
from inside mt76_tx_status_lock() and mt76_tx_status_unlock().
Remove __acquire(&dev->status_list.lock) annotation
Remove __releases(&dev->status_list.unlock)
Correct &dev->status_list.unlock to &dev->status_list.lock
-unlock not defined in the sk_buff_head struct
Signed-off-by: Jules Irenge <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
Felix Fietkau