[PATCH 3/3] ath11k: process full monitor mode rx support

[Kalle Valo]

Jouni Malinen <jouni at codeaurora.org> wrote:

> From: Anilkumar Kolli <akolli at codeaurora.org>
> 
> In full monitor mode, monitor destination ring is read before monitor
> status ring. mon_dst_ring has ppdu id, reap till the end of PPDU. Add
> all the MPDUs to list. Start processing the status ring, if PPDU id in
> status ring is lagging behind, reap the status ring, once the PPDU ID
> matches, deliver the MSDU to upper layer. If status PPDU id leading,
> reap the mon_dst_ring. The advantage with full monitor mode is hardware
> has status buffers available for all the MPDUs in mon_dst_ring.
> 
> Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.4.0.1-01734-QCAHKSWPL_SILICONZ-1
> 
> Signed-off-by: Anilkumar Kolli <akolli at codeaurora.org>
> Signed-off-by: Jouni Malinen <jouni at codeaurora.org>

I changed the commit log to this to better describe how this patch helps:

    ath11k: process full monitor mode rx support
    
    In full monitor mode, monitor destination ring is read before monitor
    status ring. mon_dst_ring has ppdu id, reap till the end of PPDU. Add
    all the MPDUs to list. Start processing the status ring, if PPDU id in
    status ring is lagging behind, reap the status ring, once the PPDU ID
    matches, deliver the MSDU to upper layer. If status PPDU id leading,
    reap the mon_dst_ring.
    
    The advantage with full monitor mode is hardware has status buffers available
    for all the MPDUs in mon_dst_ring, which makes it possible to deliver more
    frames to be seen on sniffer.
    
    Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.4.0.1-01734-QCAHKSWPL_SILICONZ-1

But now I see a new warning with QCA6390 caused by patch 3. Please fix that and submit v2.

[  108.354361] ath11k_pci 0000:06:00.0: chip_id 0x0 chip_family 0xb board_id 0xff soc_id 0xffffffff
[  108.354547] ath11k_pci 0000:06:00.0: fw_version 0x101c06cc fw_build_timestamp 2020-06-24 19:50 fw_build_id 
[  110.995359] INFO: trying to register non-static key.
[  110.995429] The code is fine but needs lockdep annotation, or maybe
[  110.995489] you didn't initialize this object before use?
[  110.995546] turning off the locking correctness validator.
[  110.995604] CPU: 1 PID: 0 Comm: swapper/1 Kdump: loaded Tainted: G        W         5.15.0-wt-ath+ #522
[  110.995664] Hardware name: Intel(R) Client Systems NUC8i7HVK/NUC8i7HVB, BIOS HNKBLi70.86A.0067.2021.0528.1339 05/28/2021
[  110.995720] Call Trace:
[  110.995774]  <IRQ>
[  110.995828]  dump_stack_lvl+0x57/0x7d
[  110.995887]  register_lock_class+0x1604/0x17e0
[  110.995945]  ? check_prev_add+0x7bb/0x20f0
[  110.996002]  ? is_dynamic_key+0x1a0/0x1a0
[  110.996058]  ? validate_chain+0xac3/0x1b30
[  110.996127]  __lock_acquire+0x96/0x1870
[  110.996196]  ? check_prev_add+0x20f0/0x20f0
[  110.996266]  ? sched_clock_cpu+0x15/0x1b0
[  110.996339]  ? mark_lock+0xd0/0x14a0
[  110.996401]  lock_acquire.part.0+0x117/0x340
[  110.996470]  ? ath11k_dp_rx_mon_dest_process.constprop.0+0x13a/0x6e0 [ath11k]
[  110.996553]  ? rcu_read_unlock+0x40/0x40
[  110.996622]  ? rcu_read_lock_sched_held+0x3a/0x70
[  110.996685]  ? lock_acquire+0x1a8/0x210
[  110.996751]  ? ath11k_dp_rx_mon_dest_process.constprop.0+0x13a/0x6e0 [ath11k]
[  110.996831]  _raw_spin_lock_bh+0x34/0x80
[  110.996892]  ? ath11k_dp_rx_mon_dest_process.constprop.0+0x13a/0x6e0 [ath11k]
[  110.996971]  ath11k_dp_rx_mon_dest_process.constprop.0+0x13a/0x6e0 [ath11k]
[  110.997071]  ? ath11k_dp_rxbufs_replenish+0x7a0/0x7a0 [ath11k]
[  110.997187]  ? mark_held_locks+0xa5/0xe0
[  110.997272]  ? ath11k_hal_rx_parse_mon_status_tlv+0x6d7/0x1880 [ath11k]
[  110.997389]  ? ath11k_hal_rx_parse_mon_status+0xed/0x170 [ath11k]
[  110.997506]  ath11k_dp_rx_process_mon_rings+0x3f9/0x580 [ath11k]
[  110.997600]  ? ath11k_dp_rx_pdev_alloc+0xd50/0xd50 [ath11k]
[  110.997680]  ath11k_dp_service_mon_ring+0x67/0xe0 [ath11k]
[  110.997759]  ? ath11k_dp_rx_process_mon_rings+0x580/0x580 [ath11k]
[  110.997835]  call_timer_fn+0x167/0x4a0
[  110.997903]  ? add_timer_on+0x3b0/0x3b0
[  110.997967]  ? lockdep_hardirqs_on_prepare.part.0+0x18c/0x370
[  110.998031]  __run_timers.part.0+0x539/0x8b0
[  110.998123]  ? ath11k_dp_rx_process_mon_rings+0x580/0x580 [ath11k]
[  110.998228]  ? call_timer_fn+0x4a0/0x4a0
[  110.998314]  ? clockevents_program_event+0xdd/0x280
[  110.998408]  ? recalibrate_cpu_khz+0x10/0x10
[  110.998496]  ? ktime_get+0x119/0x2f0
[  110.998579]  ? hrtimer_interrupt+0x32f/0x770
[  110.998679]  run_timer_softirq+0x97/0x180
[  110.998764]  __do_softirq+0x276/0x86a
[  110.998850]  __irq_exit_rcu+0x11c/0x180
[  110.998934]  irq_exit_rcu+0x5/0x20
[  110.999017]  sysvec_apic_timer_interrupt+0x8e/0xc0
[  110.999100]  </IRQ>
[  110.999181]  <TASK>
[  110.999261]  asm_sysvec_apic_timer_interrupt+0x12/0x20

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20210721171905.61838-4-jouni@codeaurora.org/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches