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Commit 855aed12 authored by Simon Wunderlich's avatar Simon Wunderlich Committed by Kalle Valo
Browse files

ath10k: add spectral scan feature 



Adds the spectral scan feature for ath10k. The spectral scan is triggered by
configuring a mode through a debugfs control file. Samples can be gathered via
another relay debugfs file.

Essentially, to try it out:

ip link set dev wlan0 up
echo background > /sys/kernel/debug/ieee80211/phy0/ath10k/spectral_scan_ctl
echo trigger > /sys/kernel/debug/ieee80211/phy0/ath10k/spectral_scan_ctl
iw dev wlan0 scan
echo disable > /sys/kernel/debug/ieee80211/phy0/ath10k/spectral_scan_ctl
cat /sys/kernel/debug/ieee80211/phy0/ath10k/spectral_scan0 > samples

This feature is still experimental. Based on the original RFC patch of
Sven Eckelmann.

Signed-off-by: default avatarSimon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: default avatarMathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de>
Signed-off-by: default avatarKalle Valo <kvalo@qca.qualcomm.com>
parent 95752b75

drivers/net/wireless/ath/ath10k/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -25,6 +25,7 @@ config ATH10K_DEBUG 
config ATH10K_DEBUGFS

	bool "Atheros ath10k debugfs support"

	depends on ATH10K

	select RELAY

	---help---

	  Enabled debugfs support

drivers/net/wireless/ath/ath10k/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ ath10k_core-y += mac.o \ 
		 wmi.o \

		 bmi.o



ath10k_core-$(CONFIG_ATH10K_DEBUGFS) += spectral.o

ath10k_core-$(CONFIG_ATH10K_TRACING) += trace.o



obj-$(CONFIG_ATH10K_PCI) += ath10k_pci.o

drivers/net/wireless/ath/ath10k/core.c

+10 −0
Original line number Diff line number Diff line
@@ -1000,9 +1000,17 @@ static void ath10k_core_register_work(struct work_struct *work) 
		goto err_unregister_mac;

	}



	status = ath10k_spectral_create(ar);

	if (status) {

		ath10k_err("failed to initialize spectral\n");

		goto err_debug_destroy;

	}



	set_bit(ATH10K_FLAG_CORE_REGISTERED, &ar->dev_flags);

	return;



err_debug_destroy:

	ath10k_debug_destroy(ar);

err_unregister_mac:

	ath10k_mac_unregister(ar);

err_release_fw:
@@ -1046,6 +1054,8 @@ void ath10k_core_unregister(struct ath10k *ar) 


	ath10k_core_free_firmware_files(ar);



	ath10k_spectral_destroy(ar);



	ath10k_debug_destroy(ar);

}

EXPORT_SYMBOL(ath10k_core_unregister);

drivers/net/wireless/ath/ath10k/core.h

+11 −0
Original line number Diff line number Diff line
@@ -31,6 +31,7 @@ 
#include "../ath.h"

#include "../regd.h"

#include "../dfs_pattern_detector.h"

#include "spectral.h"



#define MS(_v, _f) (((_v) & _f##_MASK) >> _f##_LSB)

#define SM(_v, _f) (((_v) << _f##_LSB) & _f##_MASK)
@@ -237,6 +238,7 @@ struct ath10k_vif { 


	bool is_started;

	bool is_up;

	bool spectral_enabled;

	u32 aid;

	u8 bssid[ETH_ALEN];
@@ -499,6 +501,15 @@ struct ath10k { 
#ifdef CONFIG_ATH10K_DEBUGFS

	struct ath10k_debug debug;

#endif



	struct {

		/* relay(fs) channel for spectral scan */

		struct rchan *rfs_chan_spec_scan;



		/* spectral_mode and spec_config are protected by conf_mutex */

		enum ath10k_spectral_mode mode;

		struct ath10k_spec_scan config;

	} spectral;

};



struct ath10k *ath10k_core_create(void *hif_priv, struct device *dev,

drivers/net/wireless/ath/ath10k/mac.c

+8 −0
Original line number Diff line number Diff line
@@ -2499,6 +2499,8 @@ static int ath10k_start(struct ieee80211_hw *hw) 
	ar->num_started_vdevs = 0;

	ath10k_regd_update(ar);



	ath10k_spectral_start(ar);



	mutex_unlock(&ar->conf_mutex);

	return 0;
@@ -2909,8 +2911,14 @@ static void ath10k_remove_interface(struct ieee80211_hw *hw, 
		dev_kfree_skb_any(arvif->beacon);

		arvif->beacon = NULL;

	}



	spin_unlock_bh(&ar->data_lock);



	ret = ath10k_spectral_vif_stop(arvif);

	if (ret)

		ath10k_warn("failed to stop spectral for vdev %i: %d\n",

			    arvif->vdev_id, ret);



	ar->free_vdev_map |= 1 << (arvif->vdev_id);

	list_del(&arvif->list);