Commit 5478c41f authored by Bryan O'Donoghue's avatar Bryan O'Donoghue Committed by Kalle Valo
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wcn36xx: Add ipv4 ARP offload support in suspend 



Add ARP offload support. Firmware is capable of responding to ARP requests
for a single ipv4 address only.

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/20210605011140.2004643-4-bryan.odonoghue@linaro.org
parent f2f49601

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

+5 −5
Original line number Diff line number Diff line
@@ -3465,7 +3465,7 @@ struct wcn36xx_hal_rem_bcn_filter_req { 
#define WCN36XX_HAL_OFFLOAD_ENABLE                          1

#define WCN36XX_HAL_OFFLOAD_BCAST_FILTER_ENABLE             0x2

#define WCN36XX_HAL_OFFLOAD_ARP_AND_BCAST_FILTER_ENABLE	\

	(HAL_OFFLOAD_ENABLE|HAL_OFFLOAD_BCAST_FILTER_ENABLE)

	(WCN36XX_HAL_OFFLOAD_ENABLE | WCN36XX_HAL_OFFLOAD_BCAST_FILTER_ENABLE)



struct wcn36xx_hal_ns_offload_params {

	u8 src_ipv6_addr[WCN36XX_HAL_IPV6_ADDR_LEN];
@@ -3487,10 +3487,10 @@ struct wcn36xx_hal_ns_offload_params { 
	/* slot index for this offload */

	u32 slot_index;

	u8 bss_index;

};

} __packed;



struct wcn36xx_hal_host_offload_req {

	u8 offload_Type;

	u8 offload_type;



	/* enable or disable */

	u8 enable;
@@ -3499,13 +3499,13 @@ struct wcn36xx_hal_host_offload_req { 
		u8 host_ipv4_addr[4];

		u8 host_ipv6_addr[WCN36XX_HAL_IPV6_ADDR_LEN];

	} u;

};

} __packed;



struct wcn36xx_hal_host_offload_req_msg {

	struct wcn36xx_hal_msg_header header;

	struct wcn36xx_hal_host_offload_req host_offload_params;

	struct wcn36xx_hal_ns_offload_params ns_offload_params;

};

} __packed;



/* Packet Types. */

#define WCN36XX_HAL_KEEP_ALIVE_NULL_PKT              1

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

+10 −3
Original line number Diff line number Diff line
@@ -1112,11 +1112,16 @@ static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow) 


	flush_workqueue(wcn->hal_ind_wq);

	mutex_lock(&wcn->conf_mutex);



	vif = wcn36xx_get_first_assoc_vif(wcn);

	if (vif)

	if (vif) {

		ret = wcn36xx_smd_arp_offload(wcn, vif, true);

		if (ret)

			goto out;

		ret = wcn36xx_smd_set_power_params(wcn, true);

	}

out:

	mutex_unlock(&wcn->conf_mutex);



	return ret;

}
@@ -1130,8 +1135,10 @@ static int wcn36xx_resume(struct ieee80211_hw *hw) 
	flush_workqueue(wcn->hal_ind_wq);

	mutex_lock(&wcn->conf_mutex);

	vif = wcn36xx_get_first_assoc_vif(wcn);

	if (vif)

	if (vif) {

		wcn36xx_smd_set_power_params(wcn, false);

		wcn36xx_smd_arp_offload(wcn, vif, false);

	}

	mutex_unlock(&wcn->conf_mutex);



	return 0;

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

+38 −0
Original line number Diff line number Diff line
@@ -2756,6 +2756,43 @@ int wcn36xx_smd_set_mc_list(struct wcn36xx *wcn, 
	return ret;

}



int wcn36xx_smd_arp_offload(struct wcn36xx *wcn, struct ieee80211_vif *vif,

			    bool enable)

{

	struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);

	struct wcn36xx_hal_host_offload_req_msg msg_body;

	int ret;



	mutex_lock(&wcn->hal_mutex);



	INIT_HAL_MSG(msg_body, WCN36XX_HAL_HOST_OFFLOAD_REQ);

	msg_body.host_offload_params.offload_type =

		WCN36XX_HAL_IPV4_ARP_REPLY_OFFLOAD;

	if (enable) {

		msg_body.host_offload_params.enable =

			WCN36XX_HAL_OFFLOAD_ARP_AND_BCAST_FILTER_ENABLE;

		memcpy(&msg_body.host_offload_params.u,

		       &vif->bss_conf.arp_addr_list[0], sizeof(__be32));

	}

	msg_body.ns_offload_params.bss_index = vif_priv->bss_index;



	PREPARE_HAL_BUF(wcn->hal_buf, msg_body);



	ret = wcn36xx_smd_send_and_wait(wcn, msg_body.header.len);

	if (ret) {

		wcn36xx_err("Sending host_offload_arp failed\n");

		goto out;

	}

	ret = wcn36xx_smd_rsp_status_check(wcn->hal_buf, wcn->hal_rsp_len);

	if (ret) {

		wcn36xx_err("host_offload_arp failed err=%d\n", ret);

		goto out;

	}

out:

	mutex_unlock(&wcn->hal_mutex);

	return ret;

}



int wcn36xx_smd_rsp_process(struct rpmsg_device *rpdev,

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

{
@@ -2804,6 +2841,7 @@ int wcn36xx_smd_rsp_process(struct rpmsg_device *rpdev, 
	case WCN36XX_HAL_8023_MULTICAST_LIST_RSP:

	case WCN36XX_HAL_START_SCAN_OFFLOAD_RSP:

	case WCN36XX_HAL_STOP_SCAN_OFFLOAD_RSP:

	case WCN36XX_HAL_HOST_OFFLOAD_RSP:

		memcpy(wcn->hal_buf, buf, len);

		wcn->hal_rsp_len = len;

		complete(&wcn->hal_rsp_compl);

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

+4 −0
Original line number Diff line number Diff line
@@ -146,4 +146,8 @@ int wcn36xx_smd_rsp_process(struct rpmsg_device *rpdev, 
int wcn36xx_smd_set_mc_list(struct wcn36xx *wcn,

			    struct ieee80211_vif *vif,

			    struct wcn36xx_hal_rcv_flt_mc_addr_list_type *fp);



int wcn36xx_smd_arp_offload(struct wcn36xx *wcn, struct ieee80211_vif *vif,

			    bool enable);



#endif	/* _SMD_H_ */