自学教程：C++ wl1271_cmd_template_set函数代码示例

int wl12xx_cmd_build_probe_req(struct wl1271 *wl, struct wl12xx_vif *wlvif,			       u8 role_id, u8 band,			       const u8 *ssid, size_t ssid_len,			       const u8 *ie, size_t ie_len){	struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);	struct sk_buff *skb;	int ret;	u32 rate;	skb = ieee80211_probereq_get(wl->hw, vif, ssid, ssid_len,				     ie, ie_len);	if (!skb) {		ret = -ENOMEM;		goto out;	}	wl1271_dump(DEBUG_SCAN, "PROBE REQ: ", skb->data, skb->len);	rate = wl1271_tx_min_rate_get(wl, wlvif->bitrate_masks[band]);	if (band == IEEE80211_BAND_2GHZ)		ret = wl1271_cmd_template_set(wl, role_id,					      CMD_TEMPL_CFG_PROBE_REQ_2_4,					      skb->data, skb->len, 0, rate);	else		ret = wl1271_cmd_template_set(wl, role_id,					      CMD_TEMPL_CFG_PROBE_REQ_5,					      skb->data, skb->len, 0, rate);out:	dev_kfree_skb(skb);	return ret;}

struct sk_buff *wl1271_cmd_build_ap_probe_req(struct wl1271 *wl,					      struct wl12xx_vif *wlvif,					      struct sk_buff *skb){	struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);	int ret;	u32 rate;	if (!skb)		skb = ieee80211_ap_probereq_get(wl->hw, vif);	if (!skb)		goto out;	wl1271_debug(DEBUG_SCAN, "set ap probe request template");	rate = wl1271_tx_min_rate_get(wl, wlvif->bitrate_masks[wlvif->band]);	if (wlvif->band == IEEE80211_BAND_2GHZ)		ret = wl1271_cmd_template_set(wl, wlvif->role_id,					      CMD_TEMPL_CFG_PROBE_REQ_2_4,					      skb->data, skb->len, 0, rate);	else		ret = wl1271_cmd_template_set(wl, wlvif->role_id,					      CMD_TEMPL_CFG_PROBE_REQ_5,					      skb->data, skb->len, 0, rate);	if (ret < 0)		wl1271_error("Unable to set ap probe request template.");out:	return skb;}

int wl1271_cmd_build_null_data(struct wl1271 *wl){	struct sk_buff *skb = NULL;	int size;	void *ptr;	int ret = -ENOMEM;	if (wl->bss_type == BSS_TYPE_IBSS) {		size = sizeof(struct wl12xx_null_data_template);		ptr = NULL;	} else {		skb = ieee80211_nullfunc_get(wl->hw, wl->vif);		if (!skb)			goto out;		size = skb->len;		ptr = skb->data;	}	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_NULL_DATA, ptr, size, 0,				      WL1271_RATE_AUTOMATIC);out:	dev_kfree_skb(skb);	if (ret)		wl1271_warning("cmd buld null data failed %d", ret);	return ret;}

static int wl1271_ap_init_null_template(struct wl1271 *wl){	struct ieee80211_hdr_3addr *nullfunc;	int ret;	nullfunc = kzalloc(sizeof(*nullfunc), GFP_KERNEL);	if (!nullfunc) {		ret = -ENOMEM;		goto out;	}	nullfunc->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |					      IEEE80211_STYPE_NULLFUNC |					      IEEE80211_FCTL_FROMDS);	/* nullfunc->addr1 is filled by FW */	memcpy(nullfunc->addr2, wl->mac_addr, ETH_ALEN);	memcpy(nullfunc->addr3, wl->mac_addr, ETH_ALEN);	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_NULL_DATA, nullfunc,				      sizeof(*nullfunc), 0,				      wl1271_tx_min_rate_get(wl));out:	kfree(nullfunc);	return ret;}

static int wl1271_ap_init_qos_null_template(struct wl1271 *wl){	struct ieee80211_qos_hdr *qosnull;	int ret;	qosnull = kzalloc(sizeof(*qosnull), GFP_KERNEL);	if (!qosnull) {		ret = -ENOMEM;		goto out;	}	qosnull->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |					     IEEE80211_STYPE_QOS_NULLFUNC |					     IEEE80211_FCTL_FROMDS);	/* qosnull->addr1 is filled by FW */	memcpy(qosnull->addr2, wl->mac_addr, ETH_ALEN);	memcpy(qosnull->addr3, wl->mac_addr, ETH_ALEN);	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_QOS_NULL_DATA, qosnull,				      sizeof(*qosnull), 0,				      wl1271_tx_min_rate_get(wl));out:	kfree(qosnull);	return ret;}

static int wl1271_ap_init_null_template(struct wl1271 *wl,					struct ieee80211_vif *vif){	struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);	struct ieee80211_hdr_3addr *nullfunc;	int ret;	u32 rate;	nullfunc = kzalloc(sizeof(*nullfunc), GFP_KERNEL);	if (!nullfunc) {		ret = -ENOMEM;		goto out;	}	nullfunc->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |					      IEEE80211_STYPE_NULLFUNC |					      IEEE80211_FCTL_FROMDS);	/* nullfunc->addr1 is filled by FW */	memcpy(nullfunc->addr2, vif->addr, ETH_ALEN);	memcpy(nullfunc->addr3, vif->addr, ETH_ALEN);	rate = wl1271_tx_min_rate_get(wl, wlvif->basic_rate_set);	ret = wl1271_cmd_template_set(wl, wlvif->role_id,				      CMD_TEMPL_NULL_DATA, nullfunc,				      sizeof(*nullfunc), 0, rate);out:	kfree(nullfunc);	return ret;}

static int wl1271_ap_init_deauth_template(struct wl1271 *wl,					  struct wl12xx_vif *wlvif){	struct wl12xx_disconn_template *tmpl;	int ret;	u32 rate;	tmpl = kzalloc(sizeof(*tmpl), GFP_KERNEL);	if (!tmpl) {		ret = -ENOMEM;		goto out;	}	tmpl->header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT |					     IEEE80211_STYPE_DEAUTH);	rate = wl1271_tx_min_rate_get(wl, wlvif->basic_rate_set);	ret = wl1271_cmd_template_set(wl, wlvif->role_id,				      CMD_TEMPL_DEAUTH_AP,				      tmpl, sizeof(*tmpl), 0, rate);out:	kfree(tmpl);	return ret;}

int wl12xx_cmd_build_probe_req(struct wl1271 *wl, struct wl12xx_vif *wlvif,			       u8 role_id, u8 band,			       const u8 *ssid, size_t ssid_len,			       const u8 *ie0, size_t ie0_len, const u8 *ie1,			       size_t ie1_len, bool sched_scan){	struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);	struct sk_buff *skb;	int ret;	u32 rate;	u16 template_id_2_4 = wl->scan_templ_id_2_4;	u16 template_id_5 = wl->scan_templ_id_5;	wl1271_debug(DEBUG_SCAN, "build probe request band %d", band);	skb = ieee80211_probereq_get(wl->hw, vif->addr, ssid, ssid_len,				     ie0_len + ie1_len);	if (!skb) {		ret = -ENOMEM;		goto out;	}	if (ie0_len)		memcpy(skb_put(skb, ie0_len), ie0, ie0_len);	if (ie1_len)		memcpy(skb_put(skb, ie1_len), ie1, ie1_len);	if (sched_scan &&	    (wl->quirks & WLCORE_QUIRK_DUAL_PROBE_TMPL)) {		template_id_2_4 = wl->sched_scan_templ_id_2_4;		template_id_5 = wl->sched_scan_templ_id_5;	}	rate = wl1271_tx_min_rate_get(wl, wlvif->bitrate_masks[band]);	if (band == IEEE80211_BAND_2GHZ)		ret = wl1271_cmd_template_set(wl, role_id,					      template_id_2_4,					      skb->data, skb->len, 0, rate);	else		ret = wl1271_cmd_template_set(wl, role_id,					      template_id_5,					      skb->data, skb->len, 0, rate);out:	dev_kfree_skb(skb);	return ret;}

static int wl1271_ap_init_templates_config(struct wl1271 *wl){	int ret;	/*	 * Put very large empty placeholders for all templates. These	 * reserve memory for later.	 */	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_AP_PROBE_RESPONSE, NULL,				      sizeof				      (struct wl12xx_probe_resp_template),				      0, WL1271_RATE_AUTOMATIC);	if (ret < 0)		return ret;	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_AP_BEACON, NULL,				      sizeof				      (struct wl12xx_beacon_template),				      0, WL1271_RATE_AUTOMATIC);	if (ret < 0)		return ret;	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_DEAUTH_AP, NULL,				      sizeof				      (struct wl12xx_disconn_template),				      0, WL1271_RATE_AUTOMATIC);	if (ret < 0)		return ret;	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_NULL_DATA, NULL,				      sizeof(struct wl12xx_null_data_template),				      0, WL1271_RATE_AUTOMATIC);	if (ret < 0)		return ret;	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_QOS_NULL_DATA, NULL,				      sizeof				      (struct wl12xx_qos_null_data_template),				      0, WL1271_RATE_AUTOMATIC);	if (ret < 0)		return ret;	return 0;}

static int wl1271_event_scan_complete(struct wl1271 *wl,				      struct event_mailbox *mbox){	int size = sizeof(struct wl12xx_probe_req_template);	wl1271_debug(DEBUG_EVENT, "status: 0x%x",		     mbox->scheduled_scan_status);	if (wl->scanning) {		if (wl->scan.state == WL1271_SCAN_BAND_DUAL) {			wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_2_4,						NULL, size);			/* 2.4 GHz band scanned, scan 5 GHz band, pretend			 * to the wl1271_cmd_scan function that we are not			 * scanning as it checks that.			 */			wl->scanning = false;			wl1271_cmd_scan(wl, wl->scan.ssid, wl->scan.ssid_len,						wl->scan.active,						wl->scan.high_prio,						WL1271_SCAN_BAND_5_GHZ,						wl->scan.probe_requests);		} else {			if (wl->scan.state == WL1271_SCAN_BAND_2_4_GHZ)				wl1271_cmd_template_set(wl,						CMD_TEMPL_CFG_PROBE_REQ_2_4,						NULL, size);			else				wl1271_cmd_template_set(wl,						CMD_TEMPL_CFG_PROBE_REQ_5,						NULL, size);			mutex_unlock(&wl->mutex);			ieee80211_scan_completed(wl->hw, false);			mutex_lock(&wl->mutex);			wl->scanning = false;		}	}	return 0;}

int wl1271_cmd_build_ps_poll(struct wl1271 *wl, u16 aid){	struct sk_buff *skb;	int ret = 0;	skb = ieee80211_pspoll_get(wl->hw, wl->vif);	if (!skb)		goto out;	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_PS_POLL, skb->data,				      skb->len, 0, wl->basic_rate_set);out:	dev_kfree_skb(skb);	return ret;}

static int wl1271_init_templates_config(struct wl1271 *wl){	int ret;	/* send empty templates for fw memory reservation */	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_2_4, NULL,				      sizeof(struct wl12xx_probe_req_template));	if (ret < 0)		return ret;	if (wl1271_11a_enabled()) {		ret = wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_5,				NULL,				sizeof(struct wl12xx_probe_req_template));		if (ret < 0)			return ret;	}	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_NULL_DATA, NULL,				      sizeof(struct wl12xx_null_data_template));	if (ret < 0)		return ret;	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_PS_POLL, NULL,				      sizeof(struct wl12xx_ps_poll_template));	if (ret < 0)		return ret;	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_QOS_NULL_DATA, NULL,				      sizeof				      (struct wl12xx_qos_null_data_template));	if (ret < 0)		return ret;	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_PROBE_RESPONSE, NULL,				      sizeof				      (struct wl12xx_probe_resp_template));	if (ret < 0)		return ret;	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_BEACON, NULL,				      sizeof				      (struct wl12xx_beacon_template));	if (ret < 0)		return ret;	return 0;}

int wl1271_cmd_build_arp_rsp(struct wl1271 *wl, __be32 ip_addr){    int ret;    struct wl12xx_arp_rsp_template tmpl;    struct ieee80211_hdr_3addr *hdr;    struct arphdr *arp_hdr;    memset(&tmpl, 0, sizeof(tmpl));    /* mac80211 header */    hdr = &tmpl.hdr;    hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |                                     IEEE80211_STYPE_DATA |                                     IEEE80211_FCTL_TODS);    memcpy(hdr->addr1, wl->vif->bss_conf.bssid, ETH_ALEN);    memcpy(hdr->addr2, wl->vif->addr, ETH_ALEN);    memset(hdr->addr3, 0xff, ETH_ALEN);    /* llc layer */    memcpy(tmpl.llc_hdr, rfc1042_header, sizeof(rfc1042_header));    tmpl.llc_type = htons(ETH_P_ARP);    /* arp header */    arp_hdr = &tmpl.arp_hdr;    arp_hdr->ar_hrd = htons(ARPHRD_ETHER);    arp_hdr->ar_pro = htons(ETH_P_IP);    arp_hdr->ar_hln = ETH_ALEN;    arp_hdr->ar_pln = 4;    arp_hdr->ar_op = htons(ARPOP_REPLY);    /* arp payload */    memcpy(tmpl.sender_hw, wl->vif->addr, ETH_ALEN);    tmpl.sender_ip = ip_addr;    ret = wl1271_cmd_template_set(wl, CMD_TEMPL_ARP_RSP,                                  &tmpl, sizeof(tmpl), 0,                                  wl->basic_rate);    return ret;}

int wl1271_cmd_build_klv_null_data(struct wl1271 *wl){	struct sk_buff *skb = NULL;	int ret = -ENOMEM;	skb = ieee80211_nullfunc_get(wl->hw, wl->vif);	if (!skb)		goto out;	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_KLV,				      skb->data, skb->len,				      CMD_TEMPL_KLV_IDX_NULL_DATA,				      WL1271_RATE_AUTOMATIC);out:	dev_kfree_skb(skb);	if (ret)		wl1271_warning("cmd build klv null data failed %d", ret);	return ret;}

int wl12xx_cmd_build_klv_null_data(struct wl1271 *wl,				   struct wl12xx_vif *wlvif){	struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);	struct sk_buff *skb = NULL;	int ret = -ENOMEM;	skb = ieee80211_nullfunc_get(wl->hw, vif);	if (!skb)		goto out;	ret = wl1271_cmd_template_set(wl, wlvif->role_id, CMD_TEMPL_KLV,				      skb->data, skb->len,				      wlvif->sta.klv_template_id,				      wlvif->basic_rate);out:	dev_kfree_skb(skb);	if (ret)		wl1271_warning("cmd build klv null data failed %d", ret);	return ret;}

int wl1271_sta_init_templates_config(struct wl1271 *wl){	int ret, i;	/* send empty templates for fw memory reservation */	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_2_4, NULL,				      WL1271_CMD_TEMPL_MAX_SIZE,				      0, WL1271_RATE_AUTOMATIC);	if (ret < 0)		return ret;	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_5,				      NULL, WL1271_CMD_TEMPL_MAX_SIZE, 0,				      WL1271_RATE_AUTOMATIC);	if (ret < 0)		return ret;	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_NULL_DATA, NULL,				      sizeof(struct wl12xx_null_data_template),				      0, WL1271_RATE_AUTOMATIC);	if (ret < 0)		return ret;	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_PS_POLL, NULL,				      sizeof(struct wl12xx_ps_poll_template),				      0, WL1271_RATE_AUTOMATIC);	if (ret < 0)		return ret;	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_QOS_NULL_DATA, NULL,				      sizeof				      (struct wl12xx_qos_null_data_template),				      0, WL1271_RATE_AUTOMATIC);	if (ret < 0)		return ret;	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_PROBE_RESPONSE, NULL,				      sizeof				      (struct wl12xx_probe_resp_template),				      0, WL1271_RATE_AUTOMATIC);	if (ret < 0)		return ret;	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_BEACON, NULL,				      sizeof				      (struct wl12xx_beacon_template),				      0, WL1271_RATE_AUTOMATIC);	if (ret < 0)		return ret;	ret = wl1271_cmd_template_set(wl, CMD_TEMPL_ARP_RSP, NULL,				      sizeof				      (struct wl12xx_arp_rsp_template),				      0, WL1271_RATE_AUTOMATIC);	if (ret < 0)		return ret;	for (i = 0; i < CMD_TEMPL_KLV_IDX_MAX; i++) {		ret = wl1271_cmd_template_set(wl, CMD_TEMPL_KLV, NULL,					      WL1271_CMD_TEMPL_MAX_SIZE, i,					      WL1271_RATE_AUTOMATIC);		if (ret < 0)			return ret;	}	return 0;}

int wl1271_init_templates_config(struct wl1271 *wl){	int ret, i;	size_t max_size;	/* send empty templates for fw memory reservation */	ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,				      CMD_TEMPL_CFG_PROBE_REQ_2_4, NULL,				      WL1271_CMD_TEMPL_MAX_SIZE,				      0, WL1271_RATE_AUTOMATIC);	if (ret < 0)		return ret;	ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,				      CMD_TEMPL_CFG_PROBE_REQ_5,				      NULL, WL1271_CMD_TEMPL_MAX_SIZE, 0,				      WL1271_RATE_AUTOMATIC);	if (ret < 0)		return ret;	ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,			CMD_TEMPL_APP_PROBE_REQ_2_4, NULL,			WL1271_CMD_TEMPL_MAX_SIZE,			0, WL1271_RATE_AUTOMATIC);	if (ret < 0)		return ret;	ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,			CMD_TEMPL_APP_PROBE_REQ_5, NULL,			WL1271_CMD_TEMPL_MAX_SIZE,			0, WL1271_RATE_AUTOMATIC);	if (ret < 0)		return ret;	ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,				      CMD_TEMPL_NULL_DATA, NULL,				      sizeof(struct wl12xx_null_data_template),				      0, WL1271_RATE_AUTOMATIC);	if (ret < 0)		return ret;	ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,				      CMD_TEMPL_PS_POLL, NULL,				      sizeof(struct wl12xx_ps_poll_template),				      0, WL1271_RATE_AUTOMATIC);	if (ret < 0)		return ret;	ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,				      CMD_TEMPL_QOS_NULL_DATA, NULL,				      sizeof				      (struct ieee80211_qos_hdr),				      0, WL1271_RATE_AUTOMATIC);	if (ret < 0)		return ret;	ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,				      CMD_TEMPL_PROBE_RESPONSE, NULL,				      WL1271_CMD_TEMPL_DFLT_SIZE,				      0, WL1271_RATE_AUTOMATIC);	if (ret < 0)		return ret;	ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,				      CMD_TEMPL_BEACON, NULL,				      WL1271_CMD_TEMPL_DFLT_SIZE,				      0, WL1271_RATE_AUTOMATIC);	if (ret < 0)		return ret;	max_size = sizeof(struct wl12xx_arp_rsp_template) +		   WL1271_EXTRA_SPACE_MAX;	ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,				      CMD_TEMPL_ARP_RSP, NULL,				      max_size,				      0, WL1271_RATE_AUTOMATIC);	if (ret < 0)		return ret;	/*	 * Put very large empty placeholders for all templates. These	 * reserve memory for later.	 */	ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,				      CMD_TEMPL_AP_PROBE_RESPONSE, NULL,				      WL1271_CMD_TEMPL_MAX_SIZE,				      0, WL1271_RATE_AUTOMATIC);	if (ret < 0)		return ret;	ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,				      CMD_TEMPL_AP_BEACON, NULL,				      WL1271_CMD_TEMPL_MAX_SIZE,				      0, WL1271_RATE_AUTOMATIC);	if (ret < 0)		return ret;	ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,				      CMD_TEMPL_DEAUTH_AP, NULL,				      sizeof//.........这里部分代码省略.........

int wl1271_cmd_build_arp_rsp(struct wl1271 *wl, struct wl12xx_vif *wlvif){	int ret, extra = 0;	u16 fc;	struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);	struct sk_buff *skb;	struct wl12xx_arp_rsp_template *tmpl;	struct ieee80211_hdr_3addr *hdr;	struct arphdr *arp_hdr;	skb = dev_alloc_skb(sizeof(*hdr) + sizeof(__le16) + sizeof(*tmpl) +			    WL1271_EXTRA_SPACE_MAX);	if (!skb) {		wl1271_error("failed to allocate buffer for arp rsp template");		return -ENOMEM;	}	skb_reserve(skb, sizeof(*hdr) + WL1271_EXTRA_SPACE_MAX);	tmpl = (struct wl12xx_arp_rsp_template *)skb_put(skb, sizeof(*tmpl));	memset(tmpl, 0, sizeof(*tmpl));	/* llc layer */	memcpy(tmpl->llc_hdr, rfc1042_header, sizeof(rfc1042_header));	tmpl->llc_type = cpu_to_be16(ETH_P_ARP);	/* arp header */	arp_hdr = &tmpl->arp_hdr;	arp_hdr->ar_hrd = cpu_to_be16(ARPHRD_ETHER);	arp_hdr->ar_pro = cpu_to_be16(ETH_P_IP);	arp_hdr->ar_hln = ETH_ALEN;	arp_hdr->ar_pln = 4;	arp_hdr->ar_op = cpu_to_be16(ARPOP_REPLY);	/* arp payload */	memcpy(tmpl->sender_hw, vif->addr, ETH_ALEN);	tmpl->sender_ip = wlvif->ip_addr;	/* encryption space */	switch (wlvif->encryption_type) {	case KEY_TKIP:		if (wl->quirks & WLCORE_QUIRK_TKIP_HEADER_SPACE)			extra = WL1271_EXTRA_SPACE_TKIP;		break;	case KEY_AES:		extra = WL1271_EXTRA_SPACE_AES;		break;	case KEY_NONE:	case KEY_WEP:	case KEY_GEM:		extra = 0;		break;	default:		wl1271_warning("Unknown encryption type: %d",			       wlvif->encryption_type);		ret = -EINVAL;		goto out;	}	if (extra) {		u8 *space = skb_push(skb, extra);		memset(space, 0, extra);	}	/* QoS header - BE */	if (wlvif->sta.qos)		memset(skb_push(skb, sizeof(__le16)), 0, sizeof(__le16));	/* mac80211 header */	hdr = (struct ieee80211_hdr_3addr *)skb_push(skb, sizeof(*hdr));	memset(hdr, 0, sizeof(*hdr));	fc = IEEE80211_FTYPE_DATA | IEEE80211_FCTL_TODS;	if (wlvif->sta.qos)		fc |= IEEE80211_STYPE_QOS_DATA;	else		fc |= IEEE80211_STYPE_DATA;	if (wlvif->encryption_type != KEY_NONE)		fc |= IEEE80211_FCTL_PROTECTED;	hdr->frame_control = cpu_to_le16(fc);	memcpy(hdr->addr1, vif->bss_conf.bssid, ETH_ALEN);	memcpy(hdr->addr2, vif->addr, ETH_ALEN);	memset(hdr->addr3, 0xff, ETH_ALEN);	ret = wl1271_cmd_template_set(wl, wlvif->role_id, CMD_TEMPL_ARP_RSP,				      skb->data, skb->len, 0,				      wlvif->basic_rate);out:	dev_kfree_skb(skb);	return ret;}