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From:   Kalle Valo <kvalo@codeaurora.org>
To:     Jouni Malinen <jouni@codeaurora.org>
Cc:     ath11k@lists.infradead.org, linux-wireless@vger.kernel.org,
        Seevalamuthu Mariappan <seevalam@codeaurora.org>,
        Miles Hu <milehu@codeaurora.org>,
        Vasanthakumar Thiagarajan <vthiagar@codeaurora.org>
Subject: Re: [PATCH 3/3] ath11k: monitor mode clean up to use separate APIs
References: <20210721162053.46290-1-jouni@codeaurora.org>
        <20210721162053.46290-4-jouni@codeaurora.org>
Date:   Tue, 21 Sep 2021 15:14:26 +0300
In-Reply-To: <20210721162053.46290-4-jouni@codeaurora.org> (Jouni Malinen's
        message of "Wed, 21 Jul 2021 19:20:53 +0300")
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Jouni Malinen <jouni@codeaurora.org> writes:

> From: Seevalamuthu Mariappan <seevalam@codeaurora.org>
>
> If monitor interface is enabled in co-exist mode, only local traffic are
> captured. It's caused by missing monitor vdev in co-exist mode. So,
> monitor mode clean up is done with separate Monitor APIs. For this,
> introduce monitor_started and monitor_vdev_created boolean flags.
>
> Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.4.0.1-01725-QCAHKSWPL_SILICONZ-1
>
> Co-developed-by: Miles Hu <milehu@codeaurora.org>
> Signed-off-by: Miles Hu <milehu@codeaurora.org>
> Co-developed-by: Vasanthakumar Thiagarajan <vthiagar@codeaurora.org>
> Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@codeaurora.org>
> Signed-off-by: Seevalamuthu Mariappan <seevalam@codeaurora.org>
> Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
> ---
>  drivers/net/wireless/ath/ath11k/core.h  |   5 --
>  drivers/net/wireless/ath/ath11k/dp_rx.c |   2 +-
>  drivers/net/wireless/ath/ath11k/dp_tx.c |   9 +-
>  drivers/net/wireless/ath/ath11k/mac.c   | 112 ++++++++++++++----------
>  4 files changed, 73 insertions(+), 55 deletions(-)
>
> diff --git a/drivers/net/wireless/ath/ath11k/core.h b/drivers/net/wireless/ath/ath11k/core.h
> index 3cddab695031..0ad5a935b52b 100644
> --- a/drivers/net/wireless/ath/ath11k/core.h
> +++ b/drivers/net/wireless/ath/ath11k/core.h
> @@ -192,10 +192,6 @@ enum ath11k_dev_flags {
>  	ATH11K_FLAG_HTC_SUSPEND_COMPLETE,
>  };
>  
> -enum ath11k_monitor_flags {
> -	ATH11K_FLAG_MONITOR_ENABLED,
> -};
> -
>  struct ath11k_vif {
>  	u32 vdev_id;
>  	enum wmi_vdev_type vdev_type;
> @@ -478,7 +474,6 @@ struct ath11k {
>  
>  	unsigned long dev_flags;
>  	unsigned int filter_flags;
> -	unsigned long monitor_flags;
>  	u32 min_tx_power;
>  	u32 max_tx_power;
>  	u32 txpower_limit_2g;
> diff --git a/drivers/net/wireless/ath/ath11k/dp_rx.c b/drivers/net/wireless/ath/ath11k/dp_rx.c
> index 9a224817630a..6fde70914e1a 100644
> --- a/drivers/net/wireless/ath/ath11k/dp_rx.c
> +++ b/drivers/net/wireless/ath/ath11k/dp_rx.c
> @@ -5029,7 +5029,7 @@ int ath11k_dp_rx_process_mon_rings(struct ath11k_base *ab, int mac_id,
>  	struct ath11k *ar = ath11k_ab_to_ar(ab, mac_id);
>  	int ret = 0;
>  
> -	if (test_bit(ATH11K_FLAG_MONITOR_ENABLED, &ar->monitor_flags))
> +	if (ar->monitor_started)
>  		ret = ath11k_dp_mon_process_rx(ab, mac_id, napi, budget);
>  	else
>  		ret = ath11k_dp_rx_process_mon_status(ab, mac_id, napi, budget);

Moving from test_bit() to a boolean looks racy to me, I don't see how
monitor_started is serialised.

And why move away from monitor_flags and having separate booleans
anyway? I would monitor_conf_enabled and monitor_started from patch 2 to
use monitor_flags.

> @@ -1076,11 +1076,16 @@ int ath11k_dp_tx_htt_monitor_mode_ring_config(struct ath11k *ar, bool reset)
>  
>  	for (i = 0; i < ab->hw_params.num_rxmda_per_pdev; i++) {
>  		ring_id = dp->rx_mon_status_refill_ring[i].refill_buf_ring.ring_id;
> -		if (!reset)
> +		if (!reset) {
>  			tlv_filter.rx_filter =
>  					HTT_RX_MON_FILTER_TLV_FLAGS_MON_STATUS_RING;
> -		else
> +		} else {
>  			tlv_filter = ath11k_mac_mon_status_filter_default;
> +#ifdef CONFIG_ATH11K_DEBUGFS
> +			if (ar->debug.extd_rx_stats)
> +				tlv_filter.rx_filter = ar->debug.rx_filter;
> +#endif

This should use ath11k_debugfs_is_extd_rx_stats_enabled and
ath11k_debugfs_rx_filter(), then the ifdef is not needed.

-- 
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