Move mt76_get_antenna in mac80211.c in order to be reused by all
drivers. Initialize .get_antenna function pointer for mt76x0, mt7603,
mt7615 and mt76x2u drivers
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

Fix possible out-of-bound access of status rates array in
mt7615_fill_txs/mt7603_fill_txs routines

Fixes: c5211e99 ("mt76: mt7603: rework and fix tx status reporting")
Fixes: 4af81f02 ("mt76: mt7615: sync with mt7603 rate control changes")
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

This reverts commit 34b0e9b7.

Since commit 7bd0650b ("mt76: dma: fix buffer unmap with non-linear skbs")
is no longer necessary to disable HW encryption for MT7630E.

Disabling HW encryption helped previously because somehow fragmented
skb's are not created if mac80211 encrypt frames, so buffer unmap bug
of non-linear skbs was not triggered. Now since this bug is properly
fixed by commit 7bd0650b ("mt76: dma: fix buffer unmap with
non-linear skbs") , we can enable HW encryption back.
Signed-off-by: NStanislaw Gruszka <sgruszka@redhat.com>
Acked-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

Set switch_reason to CH_SWITCH_SCAN_BYPASS_DPD during frequency scanning
in order to disable radar pattern detector
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

Move interface modes declaration in common code since now mt76
chipsets support all modes (NL80211_IFTYPE_STATION, NL80211_IFTYPE_AP,
NL80211_IFTYPE_MESH_POINT and NL80211_IFTYPE_ADHOC)
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

Enable IFTYPE_ADHOC support on 7615 devices. The feature has been tested
using a mt76x2 device as wireless peer.
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

Move SUPPORTS_REORDERING_BUFFER hw property configuration from chip
specific code to mt76_register_device since it is supported by all mt76
drivers
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

Convert mt76_is_mmio and mt76_is_usb to rely on mt76_dev instead of
mt76x02_dev since this is a property not strictly related to hw chipset
and it will be more reusable
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/net/wireless/mediatek/mt76/dma.c: In function mt76_dma_rx_fill:
drivers/net/wireless/mediatek/mt76/dma.c:377:6: warning: variable idx set but not used [-Wunused-but-set-variable]

It is not used since commit 17f1de56 ("mt76:
add common code shared between multiple chipsets")
Reported-by: NHulk Robot <hulkci@huawei.com>
Signed-off-by: Nzhengbin <zhengbin13@huawei.com>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

rate controller and throughput are very sensitive to tx status timing.
In order to improve performances when the system is heavily loaded,
substitute stat_work delayed_work with a regular work_struct and create
a mt76u dedicated workqueue for tx status reporting
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

usb drivers are supposed to communicate using usb_interface instead
mt76x{0,2}u is now registering through usb_device. Fix it by passing
usb_intf device to mt76_alloc_device routine.

Fixes: 112f980a ("mt76usb: use usb_dev private data")
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Tested-By: NZero_Chaos <sidhayn@gmail.com>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

remove unneeded semicolon.
This is detected by coccinelle.
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

Since mt76x0 does not save the phy calibration data it is not necessary
to wait 350ms in mt76x0_phy_calibrate
Tested-by: NSid Hayn <sidhayn@gmail.com>
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

Update ewma packet length in mt76x02u_tx_prepare_skb as it is
done for pci counterpart in order to properly estimate tx time on
current channel
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

It hasn't been used in a while
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

Avoid dereferencing invalid ids
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

Read busy counters not holding cc_lock spinlock since usb read can't be
performed in interrupt context. Move cc_active and cc_rx counters out of
cc_lock since they are not modified in interrupt context.
Grab cc_lock updating cur_cc_bss_rx in mt76_airtime_report and do not
hold rx_lock in mt76_update_survey.
Moreover grab mt76 mutex in mt76_get_survey before running
mt76_update_survey. This patch fixes the following 'schedule while
atomic'

[  291.790866] BUG: scheduling while atomic: iw/2161/0x00000202
[  291.791002] Preemption disabled at:
[  291.791007] [<0000000000000000>] 0x0
[  291.791015] CPU: 0 PID: 2161 Comm: iw Tainted: G W 5.4.= 0-rc2-3-ARCH-00104-g9e208aa0 #1
[  291.791017] Hardware name: LENOVO 2349QM6/2349QM6, BIOS G1ETC2WW (2.82=) 08/07/2019
[  291.791019] Call Trace:
[  291.791042]  dump_stack+0x5c/0x80
[  291.791049]  __schedule_bug.cold+0x8e/0x9b
[  291.791055]  __schedule+0x5f8/0x770
[  291.791062]  schedule+0x43/0xd0
[  291.791068]  schedule_preempt_disabled+0x14/0x20
[  291.791074]  __mutex_lock.isra.0+0x18a/0x530
[  291.791099]  mt76u_rr+0x1f/0x40 [mt76_usb]
[  291.791113]  mt76x02_update_channel+0x22/0x40 [mt76x02_lib]
[  291.791122]  mt76_update_survey+0x42/0xe0 [mt76]
[  291.791129]  mt76_get_survey+0x2f/0x1b0 [mt76]
[  291.791170]  ieee80211_dump_survey+0x5e/0x140 [mac80211]
[  291.791217]  nl80211_dump_survey+0x13c/0x2f0 [cfg80211]
[  291.791222]  ? __kmalloc_reserve.isra.0+0x2d/0x70
[  291.791225]  ? __alloc_skb+0x96/0x1d0
[  291.791229]  netlink_dump+0x17b/0x370
[  291.791247]  __netlink_dump_start+0x16f/0x1e0
[  291.791253]  genl_family_rcv_msg+0x396/0x410
[  291.791290]  ? nl80211_prepare_wdev_dump+0x1b0/0x1b0 [cfg80211]
[  291.791297]  ? _raw_spin_unlock_irqrestore+0x20/0x40
[  291.791312]  ? __wake_up_common_lock+0x8a/0xc0
[  291.791316]  genl_rcv_msg+0x47/0x90
[  291.791320]  ? genl_family_rcv_msg+0x410/0x410
[  291.791323]  netlink_rcv_skb+0x49/0x110
[  291.791329]  genl_rcv+0x24/0x40
[  291.791333]  netlink_unicast+0x171/0x200
[  291.791340]  netlink_sendmsg+0x208/0x3d0
[  291.791358]  sock_sendmsg+0x5e/0x60
[  291.791361]  ___sys_sendmsg+0x2ae/0x330
[  291.791368]  ? filemap_map_pages+0x272/0x390
[  291.791374]  ? _raw_spin_unlock+0x16/0x30
[  291.791379]  ? __handle_mm_fault+0x112f/0x1390
[  291.791388]  __sys_sendmsg+0x59/0xa0
[  291.791396]  do_syscall_64+0x5b/0x1a0
[  291.791400]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  291.791404] RIP: 0033:0x7f5d0c7f37b7
[  291.791418] Code: 64 89 02 48 c7 c0 ff ff ff ff eb bb 0f 1f 80 00 00 0=
0 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05=
 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
[  291.791421] RSP: 002b:00007ffe8b5d0538 EFLAGS: 00000246 ORIG_RAX: 0000= 00000000002e
[  291.791426] RAX: ffffffffffffffda RBX: 000055a038e6c390 RCX: 00007f5d0= c7f37b7
[  291.791430] RDX: 0000000000000000 RSI: 00007ffe8b5d0570 RDI: 000000000= 0000003
[  291.791434] RBP: 000055a038e718c0 R08: 000055a038e6c02a R09: 000000000= 0000002
[  291.791438] R10: 000055a03808cb00 R11: 0000000000000246 R12: 000055a03= 8e71780
[  291.791440] R13: 00007ffe8b5d0570 R14: 000055a038e717d0 R15: 000055a03= 8e718c0
[  291.791480] NOHZ: local_softirq_pending 202

Fixes: 168aea24 ("mt76: mt76x02u: enable survey support")
Tested-by: NMarkus Theil <markus.theil@tu-ilmenau.de>
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

mt76x0e driver only supports MAC addresses from
calibration data eeprom. Many routers however do not
have a valid stock address set in this field.

This patch makes it possible to take a MAC address
from OF (e.g. from mtd).
Signed-off-by: NPawel Dembicki <paweldembicki@gmail.com>
[adjusted for kernel submission]
Signed-off-by: NAdrian Schmutzler <freifunk@adrianschmutzler.de>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

if napi_complete() returns false, it means that polling is still pending.
Interrupts should not fire until the polling is no longer scheduled
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

Cancel the workqueue after the tid has been cleaned up, in order to
avoid a possible rescheduling from within the work function.
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

A rcu read locked section is not allowed to sleep, and the rcu lock here
isn't actually necessary, because we're holding dev->mutex.
Fixes an issue when the tid work item is still running while freeing
a station or stopping the aggregation session
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

This is needed primarily to avoid races in dealing with rx aggregation
related data structures
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

With the devm API, the unregister happens after the device cleanup is done,
after which the struct mt76_dev which contains the led_cdev has already been
freed. This leads to a use-after-free bug that can crash the system.
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

It is supported by all hardware drivers now
Signed-off-by: NFelix Fietkau <nbd@nbd.name>
Acked-by: NToke Høiland-Jørgensen <toke@redhat.com>

Poll per-station hardware counters available in WTBL after tx/rx
status events in order to report tx/rx airtime to mac80211 layer
Co-developed-by: NFelix Fietkau <nbd@nbd.name>
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

Introduce mt7615_mac_wtbl_update utility routine in order to update
WTBL update register
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

Like on mt7603, MIB status register 16 tracks CCA time, but does not
include tx time. Switch to status register 9 to includ NAV and tx
time as well.
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

Report tx time/rx time and obss time from hw mib counters to fill survey
info requested by mac80211
Co-developed-by: NFelix Fietkau <nbd@nbd.name>
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

Estimate by calculating duration for EWMA packet size + estimated A-MPDU
length on tx status events
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

Reduces code duplication and adds missing bits for USB variants
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

Host time is used to calculate the channel active time on mt7603 and mt7615.
Use the same on mt76x02 and move the lock to core code to get rid of some
duplicated code.
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

MT_MIB_STAT_PSCCA only counts rx CCA busy time, which does not include
tx time. MT_MIB_STAT_CCA counts full busy time, including Rx, Tx and NAV
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

Poll per-station hardware counters after tx status events
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

Report total rx airtime for valid stations as BSS rx time in survey

mt7615 is left out for now, it will be supported later by reading
hardware counters instead of calculating airtime in software
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

Move mt76_channel_state() from mt76.h to mac80211.c
Preparation for updating channel state from more places in the drivers/core
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

This reduces the struct size and is useful for adding more flags later
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

This can be used in monitor mode to figure out which subframes were sent as
part of which A-MPDU
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

It is no longer used
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

Introduce ampdu_stat entry in mt7603 debugfs in order to dump 802.11
aggr cumulative statistics
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

Introduce ampdu_stat entry in mt7615 debugfs in order to dump 802.11
aggr cumulative statistics
Signed-off-by: NLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>