staging: r8188eu: introduce new os_dep dir for RTL8188eu driver

This patchset is split in order to keep the file sizes down. This os_dep
directory is part of the newer/better driver from GitHub modified by
Larry Finger. Import this as the basis for all future work going
forward.
Suggested-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210727232219.2948-4-phil@philpotter.co.ukSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/os_dep/mlme_linux.c

+/******************************************************************************
+ *
+ * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
+ *
+ *
+ ******************************************************************************/
+
+#define _MLME_OSDEP_C_
+
+#include <osdep_service.h>
+#include <drv_types.h>
+#include <mlme_osdep.h>
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
+void rtw_join_timeout_handler (void *FunctionContext)
+#else
+void rtw_join_timeout_handler (struct timer_list *t)
+#endif
+{
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
+	struct adapter *adapter = (struct adapter *)FunctionContext;
+#else
+	struct adapter *adapter = from_timer(adapter, t, mlmepriv.assoc_timer);
+#endif
+
+	_rtw_join_timeout_handler(adapter);
+}
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
+void _rtw_scan_timeout_handler (void *FunctionContext)
+#else
+void _rtw_scan_timeout_handler (struct timer_list *t)
+#endif
+{
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
+	struct adapter *adapter = (struct adapter *)FunctionContext;
+#else
+	struct adapter *adapter = from_timer(adapter, t, mlmepriv.scan_to_timer);
+#endif
+
+	rtw_scan_timeout_handler(adapter);
+}
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
+static void _dynamic_check_timer_handlder(void *FunctionContext)
+#else
+static void _dynamic_check_timer_handlder(struct timer_list *t)
+#endif
+{
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
+	struct adapter *adapter = (struct adapter *)FunctionContext;
+#else
+	struct adapter *adapter = from_timer(adapter, t, mlmepriv.dynamic_chk_timer);
+#endif
+
+	if (adapter->registrypriv.mp_mode == 1)
+		return;
+	rtw_dynamic_check_timer_handlder(adapter);
+	_set_timer(&adapter->mlmepriv.dynamic_chk_timer, 2000);
+}
+
+void rtw_init_mlme_timer(struct adapter *padapter)
+{
+	struct	mlme_priv *pmlmepriv = &padapter->mlmepriv;
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
+	_init_timer(&(pmlmepriv->assoc_timer), padapter->pnetdev, rtw_join_timeout_handler, padapter);
+	_init_timer(&(pmlmepriv->scan_to_timer), padapter->pnetdev, _rtw_scan_timeout_handler, padapter);
+	_init_timer(&(pmlmepriv->dynamic_chk_timer), padapter->pnetdev, _dynamic_check_timer_handlder, padapter);
+#else
+	timer_setup(&pmlmepriv->assoc_timer, rtw_join_timeout_handler, 0);
+	timer_setup(&pmlmepriv->scan_to_timer, _rtw_scan_timeout_handler, 0);
+	timer_setup(&pmlmepriv->dynamic_chk_timer, _dynamic_check_timer_handlder, 0);
+#endif
+}
+
+void rtw_os_indicate_connect(struct adapter *adapter)
+{
+
+	rtw_indicate_wx_assoc_event(adapter);
+	netif_carrier_on(adapter->pnetdev);
+	if (adapter->pid[2] != 0)
+		rtw_signal_process(adapter->pid[2], SIGALRM);
+
+}
+
+void rtw_os_indicate_scan_done(struct adapter *padapter, bool aborted)
+{
+	indicate_wx_scan_complete_event(padapter);
+}
+
+static struct rt_pmkid_list backup_pmkid[NUM_PMKID_CACHE];
+
+void rtw_reset_securitypriv(struct adapter *adapter)
+{
+	u8	backup_index = 0;
+	u8	backup_counter = 0x00;
+	u32	backup_time = 0;
+
+	if (adapter->securitypriv.dot11AuthAlgrthm == dot11AuthAlgrthm_8021X) {
+		/* 802.1x */
+		/*  We have to backup the PMK information for WiFi PMK Caching test item. */
+		/*  Backup the btkip_countermeasure information. */
+		/*  When the countermeasure is trigger, the driver have to disconnect with AP for 60 seconds. */
+		memset(&backup_pmkid[0], 0x00, sizeof(struct rt_pmkid_list) * NUM_PMKID_CACHE);
+		memcpy(&backup_pmkid[0], &adapter->securitypriv.PMKIDList[0], sizeof(struct rt_pmkid_list) * NUM_PMKID_CACHE);
+		backup_index = adapter->securitypriv.PMKIDIndex;
+		backup_counter = adapter->securitypriv.btkip_countermeasure;
+		backup_time = adapter->securitypriv.btkip_countermeasure_time;
+		memset((unsigned char *)&adapter->securitypriv, 0, sizeof(struct security_priv));
+
+		/*  Restore the PMK information to securitypriv structure for the following connection. */
+		memcpy(&adapter->securitypriv.PMKIDList[0],
+			    &backup_pmkid[0],
+			    sizeof(struct rt_pmkid_list) * NUM_PMKID_CACHE);
+		adapter->securitypriv.PMKIDIndex = backup_index;
+		adapter->securitypriv.btkip_countermeasure = backup_counter;
+		adapter->securitypriv.btkip_countermeasure_time = backup_time;
+		adapter->securitypriv.ndisauthtype = Ndis802_11AuthModeOpen;
+		adapter->securitypriv.ndisencryptstatus = Ndis802_11WEPDisabled;
+	} else {
+		/* reset values in securitypriv */
+		struct security_priv *psec_priv = &adapter->securitypriv;
+
+		psec_priv->dot11AuthAlgrthm = dot11AuthAlgrthm_Open;  /* open system */
+		psec_priv->dot11PrivacyAlgrthm = _NO_PRIVACY_;
+		psec_priv->dot11PrivacyKeyIndex = 0;
+		psec_priv->dot118021XGrpPrivacy = _NO_PRIVACY_;
+		psec_priv->dot118021XGrpKeyid = 1;
+		psec_priv->ndisauthtype = Ndis802_11AuthModeOpen;
+		psec_priv->ndisencryptstatus = Ndis802_11WEPDisabled;
+	}
+}
+
+void rtw_os_indicate_disconnect(struct adapter *adapter)
+{
+
+	netif_carrier_off(adapter->pnetdev); /*  Do it first for tx broadcast pkt after disconnection issue! */
+	rtw_indicate_wx_disassoc_event(adapter);
+	 rtw_reset_securitypriv(adapter);
+
+}
+
+void rtw_report_sec_ie(struct adapter *adapter, u8 authmode, u8 *sec_ie)
+{
+	uint	len;
+	u8	*buff, *p, i;
+	union iwreq_data wrqu;
+
+	RT_TRACE(_module_mlme_osdep_c_, _drv_info_,
+		 ("+rtw_report_sec_ie, authmode=%d\n", authmode));
+	buff = NULL;
+	if (authmode == _WPA_IE_ID_) {
+		RT_TRACE(_module_mlme_osdep_c_, _drv_info_,
+			 ("rtw_report_sec_ie, authmode=%d\n", authmode));
+		buff = rtw_malloc(IW_CUSTOM_MAX);
+		if (!buff)
+			return;
+		memset(buff, 0, IW_CUSTOM_MAX);
+		p = buff;
+		p += sprintf(p, "ASSOCINFO(ReqIEs =");
+		len = sec_ie[1]+2;
+		len =  (len < IW_CUSTOM_MAX) ? len : IW_CUSTOM_MAX;
+		for (i = 0; i < len; i++)
+			p += sprintf(p, "%02x", sec_ie[i]);
+		p += sprintf(p, ")");
+		memset(&wrqu, 0, sizeof(wrqu));
+		wrqu.data.length = p-buff;
+		wrqu.data.length = (wrqu.data.length < IW_CUSTOM_MAX) ?
+				   wrqu.data.length : IW_CUSTOM_MAX;
+		wireless_send_event(adapter->pnetdev, IWEVCUSTOM, &wrqu, buff);
+		kfree(buff);
+	}
+}
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
+static void _survey_timer_hdl(void *FunctionContext)
+#else
+static void _survey_timer_hdl(struct timer_list *t)
+#endif
+{
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
+	struct adapter *padapter = (struct adapter *)FunctionContext;
+#else
+	struct adapter *padapter = from_timer(padapter, t, mlmeextpriv.survey_timer);
+#endif
+
+	survey_timer_hdl(padapter);
+}
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
+static void _link_timer_hdl(void *FunctionContext)
+#else
+static void _link_timer_hdl(struct timer_list *t)
+#endif
+{
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
+	struct adapter *padapter = (struct adapter *)FunctionContext;
+#else
+	struct adapter *padapter = from_timer(padapter, t, mlmeextpriv.link_timer);
+#endif
+	link_timer_hdl(padapter);
+}
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
+static void _addba_timer_hdl(void *FunctionContext)
+#else
+static void _addba_timer_hdl(struct timer_list *t)
+#endif
+{
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
+	struct sta_info *psta = (struct sta_info *)FunctionContext;
+#else
+	struct sta_info *psta = from_timer(psta, t, addba_retry_timer);
+#endif
+	addba_timer_hdl(psta);
+}
+
+void init_addba_retry_timer(struct adapter *padapter, struct sta_info *psta)
+{
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
+	_init_timer(&psta->addba_retry_timer, padapter->pnetdev, _addba_timer_hdl, psta);
+#else
+	timer_setup(&psta->addba_retry_timer, _addba_timer_hdl, 0);
+#endif
+}
+
+void init_mlme_ext_timer(struct adapter *padapter)
+{
+	struct	mlme_ext_priv *pmlmeext = &padapter->mlmeextpriv;
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
+	_init_timer(&pmlmeext->survey_timer, padapter->pnetdev, _survey_timer_hdl, padapter);
+	_init_timer(&pmlmeext->link_timer, padapter->pnetdev, _link_timer_hdl, padapter);
+#else
+	timer_setup(&pmlmeext->survey_timer, _survey_timer_hdl, 0);
+	timer_setup(&pmlmeext->link_timer, _link_timer_hdl, 0);
+#endif
+}
+
+#ifdef CONFIG_88EU_AP_MODE
+
+void rtw_indicate_sta_assoc_event(struct adapter *padapter, struct sta_info *psta)
+{
+	union iwreq_data wrqu;
+	struct sta_priv *pstapriv = &padapter->stapriv;
+
+	if (psta == NULL)
+		return;
+
+	if (psta->aid > NUM_STA)
+		return;
+
+	if (pstapriv->sta_aid[psta->aid - 1] != psta)
+		return;
+
+	wrqu.addr.sa_family = ARPHRD_ETHER;
+
+	memcpy(wrqu.addr.sa_data, psta->hwaddr, ETH_ALEN);
+
+	DBG_88E("+rtw_indicate_sta_assoc_event\n");
+
+	wireless_send_event(padapter->pnetdev, IWEVREGISTERED, &wrqu, NULL);
+}
+
+void rtw_indicate_sta_disassoc_event(struct adapter *padapter, struct sta_info *psta)
+{
+	union iwreq_data wrqu;
+	struct sta_priv *pstapriv = &padapter->stapriv;
+
+	if (psta == NULL)
+		return;
+
+	if (psta->aid > NUM_STA)
+		return;
+
+	if (pstapriv->sta_aid[psta->aid - 1] != psta)
+		return;
+
+	wrqu.addr.sa_family = ARPHRD_ETHER;
+
+	memcpy(wrqu.addr.sa_data, psta->hwaddr, ETH_ALEN);
+
+	DBG_88E("+rtw_indicate_sta_disassoc_event\n");
+
+	wireless_send_event(padapter->pnetdev, IWEVEXPIRED, &wrqu, NULL);
+}
+
+#endif

drivers/staging/r8188eu/os_dep/recv_linux.c

+/******************************************************************************
+ *
+ * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
+ *
+ *
+ ******************************************************************************/
+#define _RECV_OSDEP_C_
+
+#include <osdep_service.h>
+#include <drv_types.h>
+
+#include <wifi.h>
+#include <recv_osdep.h>
+
+#include <osdep_intf.h>
+#include <ethernet.h>
+#include <usb_ops.h>
+
+/* init os related resource in struct recv_priv */
+int rtw_os_recv_resource_init(struct recv_priv *precvpriv,
+			      struct adapter *padapter)
+{
+	return _SUCCESS;
+}
+
+/* alloc os related resource in struct recv_frame */
+int rtw_os_recv_resource_alloc(struct adapter *padapter,
+			       struct recv_frame *precvframe)
+{
+	precvframe->pkt_newalloc = NULL;
+	precvframe->pkt = NULL;
+	return _SUCCESS;
+}
+
+/* free os related resource in struct recv_frame */
+void rtw_os_recv_resource_free(struct recv_priv *precvpriv)
+{
+}
+
+/* alloc os related resource in struct recv_buf */
+int rtw_os_recvbuf_resource_alloc(struct adapter *padapter,
+				  struct recv_buf *precvbuf)
+{
+	int res = _SUCCESS;
+
+	precvbuf->irp_pending = false;
+	precvbuf->purb = usb_alloc_urb(0, GFP_KERNEL);
+	if (precvbuf->purb == NULL)
+		res = _FAIL;
+	precvbuf->pskb = NULL;
+	precvbuf->reuse = false;
+	precvbuf->pallocated_buf = NULL;
+	precvbuf->pbuf = NULL;
+	precvbuf->pdata = NULL;
+	precvbuf->phead = NULL;
+	precvbuf->ptail = NULL;
+	precvbuf->pend = NULL;
+	precvbuf->transfer_len = 0;
+	precvbuf->len = 0;
+	return res;
+}
+
+/* free os related resource in struct recv_buf */
+int rtw_os_recvbuf_resource_free(struct adapter *padapter,
+				 struct recv_buf *precvbuf)
+{
+		usb_free_urb(precvbuf->purb);
+	return _SUCCESS;
+}
+
+void rtw_handle_tkip_mic_err(struct adapter *padapter, u8 bgroup)
+{
+	union iwreq_data wrqu;
+	struct iw_michaelmicfailure    ev;
+	struct mlme_priv *pmlmepriv  = &padapter->mlmepriv;
+	struct security_priv	*psecuritypriv = &padapter->securitypriv;
+	u32 cur_time = 0;
+
+	if (psecuritypriv->last_mic_err_time == 0) {
+		psecuritypriv->last_mic_err_time = jiffies;
+	} else {
+		cur_time = jiffies;
+
+		if (cur_time - psecuritypriv->last_mic_err_time < 60*HZ) {
+			psecuritypriv->btkip_countermeasure = true;
+			psecuritypriv->last_mic_err_time = 0;
+			psecuritypriv->btkip_countermeasure_time = cur_time;
+		} else {
+			psecuritypriv->last_mic_err_time = jiffies;
+		}
+	}
+
+	memset(&ev, 0x00, sizeof(ev));
+	if (bgroup)
+		ev.flags |= IW_MICFAILURE_GROUP;
+	else
+		ev.flags |= IW_MICFAILURE_PAIRWISE;
+
+	ev.src_addr.sa_family = ARPHRD_ETHER;
+	memcpy(ev.src_addr.sa_data, &pmlmepriv->assoc_bssid[0], ETH_ALEN);
+	memset(&wrqu, 0x00, sizeof(wrqu));
+	wrqu.data.length = sizeof(ev);
+	wireless_send_event(padapter->pnetdev, IWEVMICHAELMICFAILURE,
+			    &wrqu, (char *)&ev);
+}
+
+void rtw_hostapd_mlme_rx(struct adapter *padapter,
+			 struct recv_frame *precv_frame)
+{
+}
+
+int rtw_recv_indicatepkt(struct adapter *padapter,
+			 struct recv_frame *precv_frame)
+{
+	struct recv_priv *precvpriv;
+	struct __queue *pfree_recv_queue;
+	struct sk_buff *skb;
+	struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
+
+	precvpriv = &(padapter->recvpriv);
+	pfree_recv_queue = &(precvpriv->free_recv_queue);
+
+	skb = precv_frame->pkt;
+	if (skb == NULL) {
+		RT_TRACE(_module_recv_osdep_c_, _drv_err_,
+			 ("rtw_recv_indicatepkt():skb == NULL something wrong!!!!\n"));
+		goto _recv_indicatepkt_drop;
+	}
+
+	RT_TRACE(_module_recv_osdep_c_, _drv_info_,
+		 ("rtw_recv_indicatepkt():skb != NULL !!!\n"));
+	RT_TRACE(_module_recv_osdep_c_, _drv_info_,
+		 ("rtw_recv_indicatepkt():precv_frame->rx_head =%p  precv_frame->hdr.rx_data =%p\n",
+		 precv_frame->rx_head, precv_frame->rx_data));
+	RT_TRACE(_module_recv_osdep_c_, _drv_info_,
+		 ("precv_frame->hdr.rx_tail =%p precv_frame->rx_end =%p precv_frame->hdr.len =%d\n",
+		 precv_frame->rx_tail, precv_frame->rx_end,
+		 precv_frame->len));
+
+	skb->data = precv_frame->rx_data;
+
+	skb_set_tail_pointer(skb, precv_frame->len);
+
+	skb->len = precv_frame->len;
+
+	RT_TRACE(_module_recv_osdep_c_, _drv_info_,
+		 ("skb->head =%p skb->data =%p skb->tail =%p skb->end =%p skb->len =%d\n",
+		 skb->head, skb->data, skb_tail_pointer(skb),
+		 skb_end_pointer(skb), skb->len));
+
+	if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
+		struct sk_buff *pskb2 = NULL;
+		struct sta_info *psta = NULL;
+		struct sta_priv *pstapriv = &padapter->stapriv;
+		struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
+		int bmcast = IS_MCAST(pattrib->dst);
+
+		if (memcmp(pattrib->dst, myid(&padapter->eeprompriv),
+				 ETH_ALEN)) {
+			if (bmcast) {
+				psta = rtw_get_bcmc_stainfo(padapter);
+				pskb2 = skb_clone(skb, GFP_ATOMIC);
+			} else {
+				psta = rtw_get_stainfo(pstapriv, pattrib->dst);
+			}
+
+			if (psta) {
+				struct net_device *pnetdev;
+
+				pnetdev = (struct net_device *)padapter->pnetdev;
+				skb->dev = pnetdev;
+				skb_set_queue_mapping(skb, rtw_recv_select_queue(skb));
+
+				rtw_xmit_entry(skb, pnetdev);
+
+				if (bmcast)
+					skb = pskb2;
+				else
+					goto _recv_indicatepkt_end;
+			}
+		}
+	}
+
+	rcu_read_lock();
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36)
+	rcu_dereference(padapter->pnetdev->rx_handler_data);
+#else
+	rcu_dereference(padapter->pnetdev->br_port);
+#endif
+	rcu_read_unlock();
+
+	skb->ip_summed = CHECKSUM_NONE;
+	skb->dev = padapter->pnetdev;
+	skb->protocol = eth_type_trans(skb, padapter->pnetdev);
+
+	netif_rx(skb);
+
+_recv_indicatepkt_end:
+
+	/*  pointers to NULL before rtw_free_recvframe() */
+	precv_frame->pkt = NULL;
+
+	rtw_free_recvframe(precv_frame, pfree_recv_queue);
+
+	RT_TRACE(_module_recv_osdep_c_, _drv_info_,
+		 ("\n rtw_recv_indicatepkt :after netif_rx!!!!\n"));
+
+	return _SUCCESS;
+
+_recv_indicatepkt_drop:
+
+	 /* enqueue back to free_recv_queue */
+		rtw_free_recvframe(precv_frame, pfree_recv_queue);
+
+	 return _FAIL;
+}
+
+void rtw_os_read_port(struct adapter *padapter, struct recv_buf *precvbuf)
+{
+	struct recv_priv *precvpriv = &padapter->recvpriv;
+
+	precvbuf->ref_cnt--;
+	/* free skb in recv_buf */
+	dev_kfree_skb_any(precvbuf->pskb);
+	precvbuf->pskb = NULL;
+	precvbuf->reuse = false;
+	if (!precvbuf->irp_pending)
+		rtw_read_port(padapter, precvpriv->ff_hwaddr, 0,
+			      (unsigned char *)precvbuf);
+}
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
+static void _rtw_reordering_ctrl_timeout_handler(void *func_context)
+#else
+static void _rtw_reordering_ctrl_timeout_handler(struct timer_list *t)
+#endif
+{
+	struct recv_reorder_ctrl *preorder_ctrl;
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
+	preorder_ctrl = (struct recv_reorder_ctrl *)func_context;
+#else
+	preorder_ctrl = from_timer(preorder_ctrl, t, reordering_ctrl_timer);
+#endif
+	rtw_reordering_ctrl_timeout_handler(preorder_ctrl);
+}
+
+void rtw_init_recv_timer(struct recv_reorder_ctrl *preorder_ctrl)
+{
+	struct adapter *padapter = preorder_ctrl->padapter;
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
+	_init_timer(&(preorder_ctrl->reordering_ctrl_timer), padapter->pnetdev, _rtw_reordering_ctrl_timeout_handler, preorder_ctrl);
+#else
+	timer_setup(&preorder_ctrl->reordering_ctrl_timer, _rtw_reordering_ctrl_timeout_handler, 0);
+#endif
+}

drivers/staging/r8188eu/os_dep/rtw_android.c

+/******************************************************************************
+ *
+ * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
+ *
+ *
+ ******************************************************************************/
+
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/version.h>
+
+#include <rtw_android.h>
+#include <osdep_service.h>
+#include <rtw_debug.h>
+#include <ioctl_cfg80211.h>
+#include <rtw_ioctl_set.h>
+
+static const char *android_wifi_cmd_str[ANDROID_WIFI_CMD_MAX] = {
+	"START",
+	"STOP",
+	"SCAN-ACTIVE",
+	"SCAN-PASSIVE",
+	"RSSI",
+	"LINKSPEED",
+	"RXFILTER-START",
+	"RXFILTER-STOP",
+	"RXFILTER-ADD",
+	"RXFILTER-REMOVE",
+	"BTCOEXSCAN-START",
+	"BTCOEXSCAN-STOP",
+	"BTCOEXMODE",
+	"SETSUSPENDOPT",
+	"P2P_DEV_ADDR",
+	"SETFWPATH",
+	"SETBAND",
+	"GETBAND",
+	"COUNTRY",
+	"P2P_SET_NOA",
+	"P2P_GET_NOA",
+	"P2P_SET_PS",
+	"SET_AP_WPS_P2P_IE",
+	"MACADDR",
+	"BLOCK",
+	"WFD-ENABLE",
+	"WFD-DISABLE",
+	"WFD-SET-TCPPORT",
+	"WFD-SET-MAXTPUT",
+	"WFD-SET-DEVTYPE",
+};
+
+struct android_wifi_priv_cmd {
+	const char __user *buf;
+	int used_len;
+	int total_len;
+};
+
+/**
+ * Local (static) functions and variables
+ */
+
+/* Initialize g_wifi_on to 1 so dhd_bus_start will be called for the first
+ * time (only) in dhd_open, subsequential wifi on will be handled by
+ * wl_android_wifi_on
+ */
+static int g_wifi_on = true;
+
+int rtw_android_cmdstr_to_num(char *cmdstr)
+{
+	int cmd_num;
+	for(cmd_num=0; cmd_num < ANDROID_WIFI_CMD_MAX; cmd_num++)
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 0, 0))
+		if (!strncasecmp(cmdstr, android_wifi_cmd_str[cmd_num],
+		    strlen(android_wifi_cmd_str[cmd_num])))
+#else
+		if(0 == strnicmp(cmdstr, android_wifi_cmd_str[cmd_num],
+		   strlen(android_wifi_cmd_str[cmd_num])))
+#endif
+			break;
+	return cmd_num;
+}
+
+static int rtw_android_get_rssi(struct net_device *net, char *command,
+				int total_len)
+{
+	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(net);
+	struct	mlme_priv	*pmlmepriv = &(padapter->mlmepriv);
+	struct	wlan_network	*pcur_network = &pmlmepriv->cur_network;
+	int bytes_written = 0;
+
+	if (check_fwstate(pmlmepriv, _FW_LINKED)) {
+		bytes_written += snprintf(&command[bytes_written], total_len,
+					  "%s rssi %d",
+					  pcur_network->network.Ssid.Ssid,
+					  padapter->recvpriv.rssi);
+	}
+	return bytes_written;
+}
+
+static int rtw_android_get_link_speed(struct net_device *net, char *command,
+				      int total_len)
+{
+	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(net);
+	int bytes_written;
+	u16 link_speed;
+
+	link_speed = rtw_get_cur_max_rate(padapter) / 10;
+	bytes_written = snprintf(command, total_len, "LinkSpeed %d",
+				 link_speed);
+	return bytes_written;
+}
+
+static int rtw_android_get_macaddr(struct net_device *net, char *command,
+				   int total_len)
+{
+	int bytes_written;
+
+	bytes_written = snprintf(command, total_len, "Macaddr = %pM",
+				 net->dev_addr);
+	return bytes_written;
+}
+
+static int android_set_cntry(struct net_device *net, char *command,
+			     int total_len)
+{
+	struct adapter *adapter = (struct adapter *)rtw_netdev_priv(net);
+	char *country_code = command + strlen(android_wifi_cmd_str[ANDROID_WIFI_CMD_COUNTRY]) + 1;
+	int ret;
+
+	ret = rtw_set_country(adapter, country_code);
+	return (ret == _SUCCESS) ? 0 : -1;
+}
+
+static int android_get_p2p_addr(struct net_device *net, char *command,
+					int total_len)
+{
+	/* We use the same address as our HW MAC address */
+	memcpy(command, net->dev_addr, ETH_ALEN);
+	return ETH_ALEN;
+}
+
+static int rtw_android_set_block(struct net_device *net, char *command,
+				 int total_len)
+{
+	return 0;
+}
+
+int rtw_android_priv_cmd(struct net_device *net, struct ifreq *ifr, int cmd)
+{
+	int ret = 0;
+	char *command = NULL;
+	int cmd_num;
+	int bytes_written = 0;
+	struct android_wifi_priv_cmd priv_cmd;
+
+	rtw_lock_suspend();
+	if (!ifr->ifr_data) {
+		ret = -EINVAL;
+		goto exit;
+	}
+	if (copy_from_user(&priv_cmd, ifr->ifr_data,
+			   sizeof(struct android_wifi_priv_cmd))) {
+		ret = -EFAULT;
+		goto exit;
+	}
+	command = kmalloc(priv_cmd.total_len, GFP_KERNEL);
+	if (!command) {
+		DBG_88E("%s: failed to allocate memory\n", __func__);
+		ret = -ENOMEM;
+		goto exit;
+	}
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 0, 0))
+	if (!access_ok(priv_cmd.buf, priv_cmd.total_len)) {
+#else
+	if (!access_ok(VERIFY_READ, priv_cmd.buf, priv_cmd.total_len)) {
+#endif
+		DBG_88E("%s: failed to access memory\n", __func__);
+		ret = -EFAULT;
+		goto exit;
+	}
+	if (copy_from_user(command, (char __user *)priv_cmd.buf,
+			   priv_cmd.total_len)) {
+		ret = -EFAULT;
+		goto exit;
+	}
+	DBG_88E("%s: Android private cmd \"%s\" on %s\n",
+		__func__, command, ifr->ifr_name);
+	cmd_num = rtw_android_cmdstr_to_num(command);
+	switch (cmd_num) {
+	case ANDROID_WIFI_CMD_START:
+		goto response;
+	case ANDROID_WIFI_CMD_SETFWPATH:
+		goto response;
+	}
+	if (!g_wifi_on) {
+		DBG_88E("%s: Ignore private cmd \"%s\" - iface %s is down\n",
+			__func__, command, ifr->ifr_name);
+		ret = 0;
+		goto exit;
+	}
+	switch (cmd_num) {
+	case ANDROID_WIFI_CMD_STOP:
+		break;
+	case ANDROID_WIFI_CMD_SCAN_ACTIVE:
+		break;
+	case ANDROID_WIFI_CMD_SCAN_PASSIVE:
+		break;
+	case ANDROID_WIFI_CMD_RSSI:
+		bytes_written = rtw_android_get_rssi(net, command,
+						     priv_cmd.total_len);
+		break;
+	case ANDROID_WIFI_CMD_LINKSPEED:
+		bytes_written = rtw_android_get_link_speed(net, command,
+							   priv_cmd.total_len);
+		break;
+	case ANDROID_WIFI_CMD_MACADDR:
+		bytes_written = rtw_android_get_macaddr(net, command,
+							priv_cmd.total_len);
+		break;
+	case ANDROID_WIFI_CMD_BLOCK:
+		bytes_written = rtw_android_set_block(net, command,
+						      priv_cmd.total_len);
+		break;
+	case ANDROID_WIFI_CMD_RXFILTER_START:
+		break;
+	case ANDROID_WIFI_CMD_RXFILTER_STOP:
+		break;
+	case ANDROID_WIFI_CMD_RXFILTER_ADD:
+		break;
+	case ANDROID_WIFI_CMD_RXFILTER_REMOVE:
+		break;
+	case ANDROID_WIFI_CMD_BTCOEXSCAN_START:
+		/* TBD: BTCOEXSCAN-START */
+		break;
+	case ANDROID_WIFI_CMD_BTCOEXSCAN_STOP:
+		/* TBD: BTCOEXSCAN-STOP */
+		break;
+	case ANDROID_WIFI_CMD_BTCOEXMODE:
+		break;
+	case ANDROID_WIFI_CMD_SETSUSPENDOPT:
+		break;
+	case ANDROID_WIFI_CMD_SETBAND:
+		break;
+	case ANDROID_WIFI_CMD_GETBAND:
+		break;
+	case ANDROID_WIFI_CMD_COUNTRY:
+		bytes_written = android_set_cntry(net, command,
+						  priv_cmd.total_len);
+		break;
+	case ANDROID_WIFI_CMD_P2P_DEV_ADDR:
+		bytes_written = android_get_p2p_addr(net, command,
+						     priv_cmd.total_len);
+		break;
+	case ANDROID_WIFI_CMD_P2P_SET_NOA:
+		break;
+	case ANDROID_WIFI_CMD_P2P_GET_NOA:
+		break;
+	case ANDROID_WIFI_CMD_P2P_SET_PS:
+		break;
+	default:
+		DBG_88E("Unknown PRIVATE command %s - ignored\n", command);
+		snprintf(command, 3, "OK");
+		bytes_written = strlen("OK");
+	}
+
+response:
+	if (bytes_written >= 0) {
+		if ((bytes_written == 0) && (priv_cmd.total_len > 0))
+			command[0] = '\0';
+		if (bytes_written >= priv_cmd.total_len) {
+			DBG_88E("%s: bytes_written = %d\n", __func__,
+				bytes_written);
+			bytes_written = priv_cmd.total_len;
+		} else {
+			bytes_written++;
+		}
+		priv_cmd.used_len = bytes_written;
+		if (copy_to_user((char __user *)priv_cmd.buf, command,
+				 bytes_written)) {
+			DBG_88E("%s: failed to copy data to user buffer\n",
+				__func__);
+			ret = -EFAULT;
+		}
+	} else {
+		ret = bytes_written;
+	}
+exit:
+	rtw_unlock_suspend();
+	kfree(command);
+	return ret;
+}

drivers/staging/r8188eu/os_dep/usb_ops_linux.c

+/******************************************************************************
+ *
+ * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
+ *
+ ******************************************************************************/
+#define _USB_OPS_LINUX_C_
+
+#include <drv_types.h>
+#include <usb_ops_linux.h>
+#include <rtw_sreset.h>
+
+unsigned int ffaddr2pipehdl(struct dvobj_priv *pdvobj, u32 addr)
+{
+	unsigned int pipe = 0, ep_num = 0;
+	struct usb_device *pusbd = pdvobj->pusbdev;
+
+	if (addr == RECV_BULK_IN_ADDR) {
+		pipe = usb_rcvbulkpipe(pusbd, pdvobj->RtInPipe[0]);
+	} else if (addr == RECV_INT_IN_ADDR) {
+		pipe = usb_rcvbulkpipe(pusbd, pdvobj->RtInPipe[1]);
+	} else if (addr < HW_QUEUE_ENTRY) {
+		ep_num = pdvobj->Queue2Pipe[addr];
+		pipe = usb_sndbulkpipe(pusbd, ep_num);
+	}
+
+	return pipe;
+}
+
+struct zero_bulkout_context {
+	void *pbuf;
+	void *purb;
+	void *pirp;
+	void *padapter;
+};
+
+void usb_read_mem(struct intf_hdl *pintfhdl, u32 addr, u32 cnt, u8 *rmem)
+{
+}
+
+void usb_write_mem(struct intf_hdl *pintfhdl, u32 addr, u32 cnt, u8 *wmem)
+{
+}
+
+void usb_read_port_cancel(struct intf_hdl *pintfhdl)
+{
+	int i;
+	struct recv_buf *precvbuf;
+	struct adapter	*padapter = pintfhdl->padapter;
+	precvbuf = (struct recv_buf *)padapter->recvpriv.precv_buf;
+
+	DBG_88E("%s\n", __func__);
+
+	padapter->bReadPortCancel = true;
+
+	for (i = 0; i < NR_RECVBUFF; i++) {
+		precvbuf->reuse = true;
+		if (precvbuf->purb)
+			usb_kill_urb(precvbuf->purb);
+		precvbuf++;
+	}
+}
+
+static void usb_write_port_complete(struct urb *purb, struct pt_regs *regs)
+{
+	struct xmit_buf *pxmitbuf = (struct xmit_buf *)purb->context;
+	struct adapter	*padapter = pxmitbuf->padapter;
+	struct xmit_priv	*pxmitpriv = &padapter->xmitpriv;
+	struct hal_data_8188e	*haldata;
+
+	switch (pxmitbuf->flags) {
+	case VO_QUEUE_INX:
+		pxmitpriv->voq_cnt--;
+		break;
+	case VI_QUEUE_INX:
+		pxmitpriv->viq_cnt--;
+		break;
+	case BE_QUEUE_INX:
+		pxmitpriv->beq_cnt--;
+		break;
+	case BK_QUEUE_INX:
+		pxmitpriv->bkq_cnt--;
+		break;
+	case HIGH_QUEUE_INX:
+#ifdef CONFIG_88EU_AP_MODE
+		rtw_chk_hi_queue_cmd(padapter);
+#endif
+		break;
+	default:
+		break;
+	}
+
+	if (padapter->bSurpriseRemoved || padapter->bDriverStopped ||
+	    padapter->bWritePortCancel) {
+		RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
+			 ("usb_write_port_complete:bDriverStopped(%d) OR bSurpriseRemoved(%d)",
+			 padapter->bDriverStopped, padapter->bSurpriseRemoved));
+		DBG_88E("%s(): TX Warning! bDriverStopped(%d) OR bSurpriseRemoved(%d) bWritePortCancel(%d) pxmitbuf->ext_tag(%x)\n",
+			__func__, padapter->bDriverStopped,
+			padapter->bSurpriseRemoved, padapter->bReadPortCancel,
+			pxmitbuf->ext_tag);
+
+		goto check_completion;
+	}
+
+	if (purb->status) {
+		RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usb_write_port_complete : purb->status(%d) != 0\n", purb->status));
+		DBG_88E("###=> urb_write_port_complete status(%d)\n", purb->status);
+		if ((purb->status == -EPIPE) || (purb->status == -EPROTO)) {
+			sreset_set_wifi_error_status(padapter, USB_WRITE_PORT_FAIL);
+		} else if (purb->status == -EINPROGRESS) {
+			RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usb_write_port_complete: EINPROGESS\n"));
+			goto check_completion;
+		} else if (purb->status == -ENOENT) {
+			DBG_88E("%s: -ENOENT\n", __func__);
+			goto check_completion;
+		} else if (purb->status == -ECONNRESET) {
+			DBG_88E("%s: -ECONNRESET\n", __func__);
+			goto check_completion;
+		} else if (purb->status == -ESHUTDOWN) {
+			RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usb_write_port_complete: ESHUTDOWN\n"));
+			padapter->bDriverStopped = true;
+			RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usb_write_port_complete:bDriverStopped = true\n"));
+			goto check_completion;
+		} else {
+			padapter->bSurpriseRemoved = true;
+			DBG_88E("bSurpriseRemoved = true\n");
+			RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usb_write_port_complete:bSurpriseRemoved = true\n"));
+
+			goto check_completion;
+		}
+	}
+
+	haldata = GET_HAL_DATA(padapter);
+	haldata->srestpriv.last_tx_complete_time = jiffies;
+
+check_completion:
+	rtw_sctx_done_err(&pxmitbuf->sctx,
+			  purb->status ? RTW_SCTX_DONE_WRITE_PORT_ERR :
+			  RTW_SCTX_DONE_SUCCESS);
+
+	rtw_free_xmitbuf(pxmitpriv, pxmitbuf);
+
+	tasklet_hi_schedule(&pxmitpriv->xmit_tasklet);
+
+}
+
+u32 usb_write_port(struct intf_hdl *pintfhdl, u32 addr, u32 cnt, u8 *wmem)
+{
+	unsigned long irqL;
+	unsigned int pipe;
+	int status;
+	u32 ret = _FAIL;
+	struct urb *purb = NULL;
+	struct adapter *padapter = (struct adapter *)pintfhdl->padapter;
+	struct dvobj_priv	*pdvobj = adapter_to_dvobj(padapter);
+	struct xmit_priv	*pxmitpriv = &padapter->xmitpriv;
+	struct xmit_buf *pxmitbuf = (struct xmit_buf *)wmem;
+	struct xmit_frame *pxmitframe = (struct xmit_frame *)pxmitbuf->priv_data;
+	struct usb_device *pusbd = pdvobj->pusbdev;
+
+	RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("+usb_write_port\n"));
+
+	if ((padapter->bDriverStopped) || (padapter->bSurpriseRemoved) ||
+	    (padapter->pwrctrlpriv.pnp_bstop_trx)) {
+		RT_TRACE(_module_hci_ops_os_c_, _drv_err_,
+			 ("usb_write_port:( padapter->bDriverStopped ||padapter->bSurpriseRemoved ||adapter->pwrctrlpriv.pnp_bstop_trx)!!!\n"));
+		rtw_sctx_done_err(&pxmitbuf->sctx, RTW_SCTX_DONE_TX_DENY);
+		goto exit;
+	}
+
+	spin_lock_irqsave(&pxmitpriv->lock, irqL);
+
+	switch (addr) {
+	case VO_QUEUE_INX:
+		pxmitpriv->voq_cnt++;
+		pxmitbuf->flags = VO_QUEUE_INX;
+		break;
+	case VI_QUEUE_INX:
+		pxmitpriv->viq_cnt++;
+		pxmitbuf->flags = VI_QUEUE_INX;
+		break;
+	case BE_QUEUE_INX:
+		pxmitpriv->beq_cnt++;
+		pxmitbuf->flags = BE_QUEUE_INX;
+		break;
+	case BK_QUEUE_INX:
+		pxmitpriv->bkq_cnt++;
+		pxmitbuf->flags = BK_QUEUE_INX;
+		break;
+	case HIGH_QUEUE_INX:
+		pxmitbuf->flags = HIGH_QUEUE_INX;
+		break;
+	default:
+		pxmitbuf->flags = MGT_QUEUE_INX;
+		break;
+	}
+
+	spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
+
+	purb	= pxmitbuf->pxmit_urb[0];
+
+	/* translate DMA FIFO addr to pipehandle */
+	pipe = ffaddr2pipehdl(pdvobj, addr);
+
+	usb_fill_bulk_urb(purb, pusbd, pipe,
+			  pxmitframe->buf_addr, /*  pxmitbuf->pbuf */
+			  cnt,
+			  usb_write_port_complete,
+			  pxmitbuf);/* context is pxmitbuf */
+
+	status = usb_submit_urb(purb, GFP_ATOMIC);
+	if (!status) {
+		struct hal_data_8188e	*haldata = GET_HAL_DATA(padapter);
+
+		haldata->srestpriv.last_tx_time = jiffies;
+	} else {
+		rtw_sctx_done_err(&pxmitbuf->sctx, RTW_SCTX_DONE_WRITE_PORT_ERR);
+		DBG_88E("usb_write_port, status =%d\n", status);
+		RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usb_write_port(): usb_submit_urb, status =%x\n", status));
+
+		switch (status) {
+		case -ENODEV:
+			padapter->bDriverStopped = true;
+			break;
+		default:
+			break;
+		}
+		goto exit;
+	}
+
+	ret = _SUCCESS;
+
+/*    We add the URB_ZERO_PACKET flag to urb so that the host will send the zero packet automatically. */
+
+	RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("-usb_write_port\n"));
+
+exit:
+	if (ret != _SUCCESS)
+		rtw_free_xmitbuf(pxmitpriv, pxmitbuf);
+
+	return ret;
+}
+
+void usb_write_port_cancel(struct intf_hdl *pintfhdl)
+{
+	int i, j;
+	struct adapter	*padapter = pintfhdl->padapter;
+	struct xmit_buf *pxmitbuf = (struct xmit_buf *)padapter->xmitpriv.pxmitbuf;
+
+	DBG_88E("%s\n", __func__);
+
+	padapter->bWritePortCancel = true;
+
+	for (i = 0; i < NR_XMITBUFF; i++) {
+		for (j = 0; j < 8; j++) {
+			if (pxmitbuf->pxmit_urb[j])
+				usb_kill_urb(pxmitbuf->pxmit_urb[j]);
+		}
+		pxmitbuf++;
+	}
+
+	pxmitbuf = (struct xmit_buf *)padapter->xmitpriv.pxmit_extbuf;
+	for (i = 0; i < NR_XMIT_EXTBUFF; i++) {
+		for (j = 0; j < 8; j++) {
+			if (pxmitbuf->pxmit_urb[j])
+				usb_kill_urb(pxmitbuf->pxmit_urb[j]);
+		}
+		pxmitbuf++;
+	}
+}

drivers/staging/r8188eu/os_dep/xmit_linux.c

+/******************************************************************************
+ *
+ * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
+ *
+ *
+ ******************************************************************************/
+#define _XMIT_OSDEP_C_
+
+#include <linux/version.h>
+#include <osdep_service.h>
+#include <drv_types.h>
+
+#include <if_ether.h>
+#include <ip.h>
+#include <wifi.h>
+#include <mlme_osdep.h>
+#include <xmit_osdep.h>
+#include <osdep_intf.h>
+#include <usb_osintf.h>
+
+uint rtw_remainder_len(struct pkt_file *pfile)
+{
+	return pfile->buf_len - ((size_t)(pfile->cur_addr) -
+	       (size_t)(pfile->buf_start));
+}
+
+void _rtw_open_pktfile(struct sk_buff *pktptr, struct pkt_file *pfile)
+{
+
+	if (!pktptr) {
+		pr_err("8188eu: pktptr is NULL\n");
+		return;
+	}
+	if (!pfile) {
+		pr_err("8188eu: pfile is NULL\n");
+		return;
+	}
+	pfile->pkt = pktptr;
+	pfile->cur_addr = pktptr->data;
+	pfile->buf_start = pktptr->data;
+	pfile->pkt_len = pktptr->len;
+	pfile->buf_len = pktptr->len;
+
+	pfile->cur_buffer = pfile->buf_start;
+
+}
+
+uint _rtw_pktfile_read (struct pkt_file *pfile, u8 *rmem, uint rlen)
+{
+	uint	len = 0;
+
+	len =  rtw_remainder_len(pfile);
+	len = (rlen > len) ? len : rlen;
+
+	if (rmem)
+		skb_copy_bits(pfile->pkt, pfile->buf_len-pfile->pkt_len, rmem, len);
+
+	pfile->cur_addr += len;
+	pfile->pkt_len -= len;
+
+	return len;
+}
+
+int rtw_endofpktfile(struct pkt_file *pfile)
+{
+
+	if (pfile->pkt_len == 0) {
+
+		return true;
+	}
+
+	return false;
+}
+
+void rtw_set_tx_chksum_offload(struct sk_buff *pkt, struct pkt_attrib *pattrib)
+{
+}
+
+int rtw_os_xmit_resource_alloc(struct adapter *padapter, struct xmit_buf *pxmitbuf, u32 alloc_sz)
+{
+	int i;
+
+	pxmitbuf->pallocated_buf = rtw_zmalloc(alloc_sz);
+	if (pxmitbuf->pallocated_buf == NULL)
+		return _FAIL;
+
+	pxmitbuf->pbuf = (u8 *)N_BYTE_ALIGMENT((size_t)(pxmitbuf->pallocated_buf), XMITBUF_ALIGN_SZ);
+	pxmitbuf->dma_transfer_addr = 0;
+
+	for (i = 0; i < 8; i++) {
+		pxmitbuf->pxmit_urb[i] = usb_alloc_urb(0, GFP_KERNEL);
+		if (pxmitbuf->pxmit_urb[i] == NULL) {
+			DBG_88E("pxmitbuf->pxmit_urb[i]==NULL");
+			return _FAIL;
+		}
+	}
+	return _SUCCESS;
+}
+
+void rtw_os_xmit_resource_free(struct adapter *padapter,
+			       struct xmit_buf *pxmitbuf, u32 free_sz)
+{
+	int i;
+
+	for (i = 0; i < 8; i++)
+		usb_free_urb(pxmitbuf->pxmit_urb[i]);
+
+	kfree(pxmitbuf->pallocated_buf);
+}
+
+#define WMM_XMIT_THRESHOLD	(NR_XMITFRAME*2/5)
+
+void rtw_os_pkt_complete(struct adapter *padapter, struct sk_buff *pkt)
+{
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35))
+	u16	queue;
+	struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
+
+	queue = skb_get_queue_mapping(pkt);
+	if (padapter->registrypriv.wifi_spec) {
+		if (__netif_subqueue_stopped(padapter->pnetdev, queue) &&
+		    (pxmitpriv->hwxmits[queue].accnt < WMM_XMIT_THRESHOLD))
+			netif_wake_subqueue(padapter->pnetdev, queue);
+	} else {
+		if (__netif_subqueue_stopped(padapter->pnetdev, queue))
+			netif_wake_subqueue(padapter->pnetdev, queue);
+	}
+#else
+	if (netif_queue_stopped(padapter->pnetdev))
+		netif_wake_queue(padapter->pnetdev);
+#endif
+
+	dev_kfree_skb_any(pkt);
+}
+
+void rtw_os_xmit_complete(struct adapter *padapter, struct xmit_frame *pxframe)
+{
+	if (pxframe->pkt)
+		rtw_os_pkt_complete(padapter, pxframe->pkt);
+	pxframe->pkt = NULL;
+}
+
+void rtw_os_xmit_schedule(struct adapter *padapter)
+{
+	struct xmit_priv *pxmitpriv;
+
+	if (!padapter)
+		return;
+
+	pxmitpriv = &padapter->xmitpriv;
+
+	spin_lock_bh(&pxmitpriv->lock);
+
+	if (rtw_txframes_pending(padapter))
+		tasklet_hi_schedule(&pxmitpriv->xmit_tasklet);
+
+	spin_unlock_bh(&pxmitpriv->lock);
+}
+
+static void rtw_check_xmit_resource(struct adapter *padapter, struct sk_buff *pkt)
+{
+	struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
+	u16	queue;
+
+	queue = skb_get_queue_mapping(pkt);
+	if (padapter->registrypriv.wifi_spec) {
+		/* No free space for Tx, tx_worker is too slow */
+		if (pxmitpriv->hwxmits[queue].accnt > WMM_XMIT_THRESHOLD)
+			netif_stop_subqueue(padapter->pnetdev, queue);
+	} else {
+		if (pxmitpriv->free_xmitframe_cnt <= 4) {
+			if (!netif_tx_queue_stopped(netdev_get_tx_queue(padapter->pnetdev, queue)))
+				netif_stop_subqueue(padapter->pnetdev, queue);
+		}
+	}
+}
+
+static int rtw_mlcst2unicst(struct adapter *padapter, struct sk_buff *skb)
+{
+	struct	sta_priv *pstapriv = &padapter->stapriv;
+	struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
+	struct list_head *phead, *plist;
+	struct sk_buff *newskb;
+	struct sta_info *psta = NULL;
+	s32	res;
+
+	spin_lock_bh(&pstapriv->asoc_list_lock);
+	phead = &pstapriv->asoc_list;
+	plist = phead->next;
+
+	/* free sta asoc_queue */
+	while (phead != plist) {
+		psta = container_of(plist, struct sta_info, asoc_list);
+
+		plist = plist->next;
+
+		/* avoid   come from STA1 and send back STA1 */
+		if (!memcmp(psta->hwaddr, &skb->data[6], 6))
+			continue;
+
+		newskb = skb_copy(skb, GFP_ATOMIC);
+
+		if (newskb) {
+			memcpy(newskb->data, psta->hwaddr, 6);
+			res = rtw_xmit(padapter, &newskb);
+			if (res < 0) {
+				DBG_88E("%s()-%d: rtw_xmit() return error!\n", __func__, __LINE__);
+				pxmitpriv->tx_drop++;
+				dev_kfree_skb_any(newskb);
+			} else {
+				pxmitpriv->tx_pkts++;
+			}
+		} else {
+			DBG_88E("%s-%d: skb_copy() failed!\n", __func__, __LINE__);
+			pxmitpriv->tx_drop++;
+
+			spin_unlock_bh(&pstapriv->asoc_list_lock);
+			return false;	/*  Caller shall tx this multicast frame via normal way. */
+		}
+	}
+
+	spin_unlock_bh(&pstapriv->asoc_list_lock);
+	dev_kfree_skb_any(skb);
+	return true;
+}
+
+int rtw_xmit_entry(struct sk_buff *pkt, struct  net_device *pnetdev)
+{
+	struct adapter *padapter = (struct adapter *)rtw_netdev_priv(pnetdev);
+	struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
+	struct mlme_priv	*pmlmepriv = &padapter->mlmepriv;
+	s32 res = 0;
+
+	RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("+xmit_enry\n"));
+
+	if (rtw_if_up(padapter) == false) {
+		RT_TRACE(_module_xmit_osdep_c_, _drv_err_, ("rtw_xmit_entry: rtw_if_up fail\n"));
+		goto drop_packet;
+	}
+
+	rtw_check_xmit_resource(padapter, pkt);
+
+	if (!rtw_mc2u_disable && check_fwstate(pmlmepriv, WIFI_AP_STATE) &&
+	    (IP_MCAST_MAC(pkt->data) || ICMPV6_MCAST_MAC(pkt->data)) &&
+	    (padapter->registrypriv.wifi_spec == 0)) {
+		if (pxmitpriv->free_xmitframe_cnt > (NR_XMITFRAME/4)) {
+			res = rtw_mlcst2unicst(padapter, pkt);
+			if (res)
+				goto exit;
+		}
+	}
+
+	res = rtw_xmit(padapter, &pkt);
+	if (res < 0)
+		goto drop_packet;
+
+	pxmitpriv->tx_pkts++;
+	RT_TRACE(_module_xmit_osdep_c_, _drv_info_, ("rtw_xmit_entry: tx_pkts=%d\n", (u32)pxmitpriv->tx_pkts));
+	goto exit;
+
+drop_packet:
+	pxmitpriv->tx_drop++;
+	dev_kfree_skb_any(pkt);
+	RT_TRACE(_module_xmit_osdep_c_, _drv_notice_, ("rtw_xmit_entry: drop, tx_drop=%d\n", (u32)pxmitpriv->tx_drop));
+
+exit:
+
+	return 0;
+}