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[v3,10/12] wcn36xx: Add Host suspend indication support

Message ID 20210319161520.3590510-11-bryan.odonoghue@linaro.org (mailing list archive)
State Changes Requested
Delegated to: Kalle Valo
Headers show
Series wcn36xx: Enable downstream consistent Wake on Lan | expand

Commit Message

Bryan O'Donoghue March 19, 2021, 4:15 p.m. UTC 
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: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
---
 drivers/net/wireless/ath/wcn36xx/main.c |  3 +++
 drivers/net/wireless/ath/wcn36xx/smd.c  | 19 +++++++++++++++++++
 drivers/net/wireless/ath/wcn36xx/smd.h  |  2 ++
 3 files changed, 24 insertions(+)
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Patch

diff --git a/drivers/net/wireless/ath/wcn36xx/main.c b/drivers/net/wireless/ath/wcn36xx/main.c
index a84128e04cc4..535e0d4245c3 100644
--- a/drivers/net/wireless/ath/wcn36xx/main.c
+++ b/drivers/net/wireless/ath/wcn36xx/main.c
@@ -1127,6 +1127,9 @@  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);
diff --git a/drivers/net/wireless/ath/wcn36xx/smd.c b/drivers/net/wireless/ath/wcn36xx/smd.c
index e249971c4ef7..302877d23ecf 100644
--- a/drivers/net/wireless/ath/wcn36xx/smd.c
+++ b/drivers/net/wireless/ath/wcn36xx/smd.c
@@ -2964,6 +2964,25 @@  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)
 {
diff --git a/drivers/net/wireless/ath/wcn36xx/smd.h b/drivers/net/wireless/ath/wcn36xx/smd.h
index 90c7faea0ef6..2909facdb100 100644
--- a/drivers/net/wireless/ath/wcn36xx/smd.h
+++ b/drivers/net/wireless/ath/wcn36xx/smd.h
@@ -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_ */