Commit 60f0078b authored by Bryan O'Donoghue's avatar Bryan O'Donoghue Committed by Kalle Valo
Browse files

wcn36xx: Add Host suspend indication support 



In order to activate ipv4 ARP offload, ipv6 NS offload and firmware GTK
offload we need to send a unidirectional indication from host to wcn
indicating a transition to suspend.

Once done, firmware will respond to ARP broadcasts, ipv6 NS lookups and
perform GTK rekeys without waking the host.

Signed-off-by: default avatarBryan O'Donoghue <bryan.odonoghue@linaro.org>
Tested-by: default avatarBenjamin Li <benl@squareup.com>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210605011140.2004643-11-bryan.odonoghue@linaro.org
parent bedf1169

drivers/net/wireless/ath/wcn36xx/main.c

+3 −0
Original line number Diff line number Diff line
@@ -1125,6 +1125,9 @@ static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow) 
		if (ret)

			goto out;

		ret = wcn36xx_smd_set_power_params(wcn, true);

		if (ret)

			goto out;

		ret = wcn36xx_smd_wlan_host_suspend_ind(wcn);

	}

out:

	mutex_unlock(&wcn->conf_mutex);

drivers/net/wireless/ath/wcn36xx/smd.c

+19 −0
Original line number Diff line number Diff line
@@ -2966,6 +2966,25 @@ int wcn36xx_smd_gtk_offload_get_info(struct wcn36xx *wcn, 
	return ret;

}



int wcn36xx_smd_wlan_host_suspend_ind(struct wcn36xx *wcn)

{

	struct wcn36xx_hal_wlan_host_suspend_ind_msg msg_body;

	int ret;



	mutex_lock(&wcn->hal_mutex);



	INIT_HAL_MSG(msg_body, WCN36XX_HAL_HOST_SUSPEND_IND);

	msg_body.configured_mcst_bcst_filter_setting = 0;

	msg_body.active_session_count = 1;

	PREPARE_HAL_BUF(wcn->hal_buf, msg_body);



	ret = rpmsg_send(wcn->smd_channel, wcn->hal_buf, msg_body.header.len);



	mutex_unlock(&wcn->hal_mutex);



	return ret;

}



int wcn36xx_smd_rsp_process(struct rpmsg_device *rpdev,

			    void *buf, int len, void *priv, u32 addr)

{

drivers/net/wireless/ath/wcn36xx/smd.h

+2 −0
Original line number Diff line number Diff line
@@ -159,4 +159,6 @@ int wcn36xx_smd_gtk_offload(struct wcn36xx *wcn, struct ieee80211_vif *vif, 
int wcn36xx_smd_gtk_offload_get_info(struct wcn36xx *wcn,

				     struct ieee80211_vif *vif);



int wcn36xx_smd_wlan_host_suspend_ind(struct wcn36xx *wcn);



#endif	/* _SMD_H_ */