staging: r8712u: Merging Realtek's latest (v2.6.6). Various fixes.
authorAli Bahar <ali@internetdog.org>
Sat, 3 Sep 2011 19:14:21 +0000 (03:14 +0800)
committerGreg Kroah-Hartman <gregkh@suse.de>
Wed, 7 Sep 2011 00:00:35 +0000 (17:00 -0700)
In r8712_generate_ie(), HT check is no longer done.
Removed r8712_add_ht_addt_info().
Changes to defragmentation handling, and queue selection.
Get TSSI command.
Added an Ad-Hoc check to is_desired_network()
r8712_ind_disconnect() now checks for Linked state.
r8712_xmit_bh() now schedules an xmit tasklet.

Signed-off-by: Ali Bahar <ali@internetDog.org>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 files changed:
drivers/staging/rtl8712/ieee80211.c
drivers/staging/rtl8712/ieee80211.h
drivers/staging/rtl8712/os_intfs.c
drivers/staging/rtl8712/rtl8712_recv.c
drivers/staging/rtl8712/rtl8712_recv.h
drivers/staging/rtl8712/rtl8712_xmit.c
drivers/staging/rtl8712/rtl8712_xmit.h
drivers/staging/rtl8712/rtl871x_cmd.c
drivers/staging/rtl8712/rtl871x_mlme.c
drivers/staging/rtl8712/rtl871x_xmit.h
drivers/staging/rtl8712/sta_info.h
drivers/staging/rtl8712/usb_intf.c
drivers/staging/rtl8712/usb_ops_linux.c

index f06addc..cc68d97 100644 (file)
@@ -170,17 +170,11 @@ static uint r8712_get_rateset_len(u8 *rateset)
        return i;
 }
 
-int r8712_generate_ie(struct registry_priv *pregistrypriv,
-                     struct _adapter *padapter)
+int r8712_generate_ie(struct registry_priv *pregistrypriv)
 {
        int sz = 0, rateLen;
        struct wlan_bssid_ex *pdev_network = &pregistrypriv->dev_network;
        u8 *ie = pdev_network->IEs;
-       struct ieee80211_ht_cap ht_capie;
-       struct ieee80211_ht_addt_info ht_addt_info;
-       unsigned char WMM_IE[] = {0x00, 0x50, 0xf2, 0x02, 0x00, 0x01, 0x00};
-       struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
-       struct qos_priv *pqospriv = &pmlmepriv->qospriv;
 
        /*timestamp will be inserted by hardware*/
        sz += 8;
@@ -219,33 +213,6 @@ int r8712_generate_ie(struct registry_priv *pregistrypriv,
        /*IBSS Parameter Set*/
        ie = r8712_set_ie(ie, _IBSS_PARA_IE_, 2,
                    (u8 *)&(pdev_network->Configuration.ATIMWindow), &sz);
-       if (pregistrypriv->ht_enable == 1) {
-               if (pqospriv->qos_option == 0) {
-                       ie = r8712_set_ie(ie, _VENDOR_SPECIFIC_IE_,
-                                          _WMM_IE_Length_, WMM_IE, &sz);
-                       pqospriv->qos_option = 1;
-               }
-               memset(&ht_capie, 0, sizeof(struct ieee80211_ht_cap));
-               ht_capie.cap_info = IEEE80211_HT_CAP_SUP_WIDTH |
-                                   IEEE80211_HT_CAP_SGI_20 |
-                                   IEEE80211_HT_CAP_SGI_40 |
-                                   IEEE80211_HT_CAP_TX_STBC |
-                                   IEEE80211_HT_CAP_MAX_AMSDU |
-                                   IEEE80211_HT_CAP_DSSSCCK40;
-               ht_capie.ampdu_params_info = (IEEE80211_HT_CAP_AMPDU_FACTOR &
-                               0x03) | (IEEE80211_HT_CAP_AMPDU_DENSITY & 0x00);
-               ie = r8712_set_ie(ie, _HT_CAPABILITY_IE_,
-                           sizeof(struct ieee80211_ht_cap),
-                           (unsigned char *)&ht_capie, &sz);
-               /*add HT info ie*/
-               memset(&ht_addt_info, 0,
-                       sizeof(struct ieee80211_ht_addt_info));
-               /*need to add the HT additional IEs*/
-               ht_addt_info.control_chan = pregistrypriv->channel;
-               ie = r8712_set_ie(ie, _HT_ADD_INFO_IE_,
-                           sizeof(struct ieee80211_ht_addt_info),
-                           (unsigned char *)&ht_addt_info, &sz);
-       }
        return sz;
 }
 
index d1d0868..3c0092b 100644 (file)
@@ -137,7 +137,7 @@ struct ieee_ibss_seq {
        u8 mac[ETH_ALEN];
        u16 seq_num;
        u16 frag_num;
-       unsigned int packet_time;
+       unsigned long packet_time;
        struct list_head list;
 };
 
@@ -669,7 +669,6 @@ struct ieee80211_txb {
 #define CRC_LENGTH                 4U
 
 #define MAX_WPA_IE_LEN 128
-#define MAX_WPS_IE_LEN 512
 
 #define NETWORK_EMPTY_ESSID (1<<0)
 #define NETWORK_HAS_OFDM    (1<<1)
@@ -789,8 +788,7 @@ int r8712_parse_wpa2_ie(u8 *wpa_ie, int wpa_ie_len, int *group_cipher,
 int r8712_get_sec_ie(u8 *in_ie, uint in_len, u8 *rsn_ie, u16 *rsn_len,
                     u8 *wpa_ie, u16 *wpa_len);
 int r8712_get_wps_ie(u8 *in_ie, uint in_len, u8 *wps_ie, uint *wps_ielen);
-int r8712_generate_ie(struct registry_priv *pregistrypriv,
-                     struct _adapter *padapter);
+int r8712_generate_ie(struct registry_priv *pregistrypriv);
 uint r8712_is_cckrates_included(u8 *rate);
 uint r8712_is_cckratesonly_included(u8 *rate);
 
index 961d6e5..9a75c6d 100644 (file)
@@ -286,6 +286,9 @@ static u8 init_default_value(struct _adapter *padapter)
        pxmitpriv->vcs_type = pregistrypriv->vcs_type;
        pxmitpriv->rts_thresh = pregistrypriv->rts_thresh;
        pxmitpriv->frag_len = pregistrypriv->frag_thresh;
+       /* mlme_priv */
+       /* Maybe someday we should rename this variable to "active_mode"(Jeff)*/
+       pmlmepriv->passive_mode = 1; /* 1: active, 0: passive. */
        /*ht_priv*/
        {
                int i;
index 625a8a0..6d69265 100644 (file)
@@ -192,7 +192,7 @@ static void update_recvframe_attrib_from_recvstat(struct rx_pkt_attrib *pattrib,
        } else
                pattrib->tcpchk_valid = 0; /* invalid */
        pattrib->mcs_rate = (u8)((le32_to_cpu(prxstat->rxdw3)) & 0x3f);
-       pattrib->htc = (u8)((le32_to_cpu(prxstat->rxdw3) >> 6) & 0x1);
+       pattrib->htc = (u8)((le32_to_cpu(prxstat->rxdw3) >> 14) & 0x1);
        /*Offset 16*/
        /*Offset 20*/
        /*phy_info*/
@@ -207,7 +207,7 @@ static union recv_frame *recvframe_defrag(struct _adapter *adapter,
                                   struct  __queue *defrag_q)
 {
        struct list_head *plist, *phead;
-       u8      wlanhdr_offset;
+       u8      *data, wlanhdr_offset;
        u8      curfragnum;
        struct recv_frame_hdr *pfhdr, *pnfhdr;
        union recv_frame *prframe, *pnextrframe;
@@ -224,22 +224,25 @@ static union recv_frame *recvframe_defrag(struct _adapter *adapter,
                /*the first fragment number must be 0
                 *free the whole queue*/
                r8712_free_recvframe(prframe, pfree_recv_queue);
-               prframe = NULL;
-               goto exit;
+               r8712_free_recvframe_queue(defrag_q, pfree_recv_queue);
+               return NULL;
        }
-       plist = get_next(phead);
+       curfragnum++;
+       plist = get_list_head(defrag_q);
+       plist = get_next(plist);
+       data = get_recvframe_data(prframe);
        while (end_of_queue_search(phead, plist) == false) {
                pnextrframe = LIST_CONTAINOR(plist, union recv_frame, u);
-               /*check the fragment sequence  (2nd ~n fragment frame) */
                pnfhdr = &pnextrframe->u.hdr;
-               curfragnum++;
+               /*check the fragment sequence  (2nd ~n fragment frame) */
                if (curfragnum != pnfhdr->attrib.frag_num) {
                        /* the fragment number must increase  (after decache)
                         * release the defrag_q & prframe */
                        r8712_free_recvframe(prframe, pfree_recv_queue);
-                       prframe = NULL;
-                       goto exit;
+                       r8712_free_recvframe_queue(defrag_q, pfree_recv_queue);
+                       return NULL;
                }
+               curfragnum++;
                /* copy the 2nd~n fragment frame's payload to the first fragment
                 * get the 2nd~last fragment frame's payload */
                wlanhdr_offset = pnfhdr->attrib.hdrlen + pnfhdr->attrib.iv_len;
@@ -252,7 +255,6 @@ static union recv_frame *recvframe_defrag(struct _adapter *adapter,
                pfhdr->attrib.icv_len = pnfhdr->attrib.icv_len;
                plist = get_next(plist);
        }
-exit:
        /* free the defrag_q queue and return the prframe */
        r8712_free_recvframe_queue(defrag_q, pfree_recv_queue);
        return prframe;
@@ -1074,7 +1076,7 @@ static int recvbuf2recvframe(struct _adapter *padapter, struct sk_buff *pskb)
                /* for first fragment packet, driver need allocate 1536 +
                 * drvinfo_sz + RXDESC_SIZE to defrag packet. */
                if ((mf == 1) && (frag == 0))
-                       alloc_sz = 1658;
+                       alloc_sz = 1658;/*1658+6=1664, 1664 is 128 alignment.*/
                else
                        alloc_sz = tmp_len;
                /* 2 is for IP header 4 bytes alignment in QoS packet case.
index 6626c8f..8efbd1f 100644 (file)
 #include "osdep_service.h"
 #include "drv_types.h"
 
+/* Realtek's v2.6.6 reduced this to 4. However, under heavy network and CPU
+ * loads, even 8 receive buffers might not be enough; cutting it to 4 seemed
+ * unwise.
+ */
 #define NR_RECVBUFF (8)
+
 #define NR_PREALLOC_RECV_SKB (8)
 #define RXDESC_SIZE    24
 #define RXDESC_OFFSET RXDESC_SIZE
index c1e4784..d09fbba 100644 (file)
@@ -37,6 +37,7 @@
 
 static void dump_xframe(struct _adapter *padapter,
                        struct xmit_frame *pxmitframe);
+static void update_txdesc(struct xmit_frame *pxmitframe, uint *pmem, int sz);
 
 sint _r8712_init_hw_txqueue(struct hw_txqueue *phw_txqueue, u8 ac_tag)
 {
@@ -238,13 +239,24 @@ exit_dequeue_xframe_ex:
 void r8712_do_queue_select(struct _adapter *padapter,
                           struct pkt_attrib *pattrib)
 {
-       u8 qsel = 0;
+       unsigned int qsel = 0;
        struct dvobj_priv *pdvobj = (struct dvobj_priv *)&padapter->dvobjpriv;
 
        if (pdvobj->nr_endpoint == 6)
-               qsel = pattrib->priority;
-       else if (pdvobj->nr_endpoint == 4)
-               qsel = pattrib->priority;
+               qsel = (unsigned int) pattrib->priority;
+       else if (pdvobj->nr_endpoint == 4) {
+               qsel = (unsigned int) pattrib->priority;
+               if (qsel == 0 || qsel == 3)
+                       qsel = 3;
+               else if (qsel == 1 || qsel == 2)
+                       qsel = 1;
+               else if (qsel == 4 || qsel == 5)
+                       qsel = 5;
+               else if (qsel == 6 || qsel == 7)
+                       qsel = 7;
+               else
+                       qsel = 3;
+       }
        pattrib->qsel = qsel;
 }
 
index 1e8f3fe..db52d13 100644 (file)
@@ -64,6 +64,8 @@
 #define OWN    BIT(31)
 #define FSG    BIT(27)
 #define LSG    BIT(26)
+#define TYPE_SHT (24)
+#define TYPE_MSK (0x03000000)
 
 /*OFFSET 4*/
 #define PKT_OFFSET_SZ (0)
@@ -74,6 +76,7 @@
 #define BMC BIT(7)
 #define BK BIT(30)
 #define AGG_EN BIT(29)
+#define RTS_RC_SHT (16)
 
 /*OFFSET 12*/
 #define SEQ_SHT (16)
@@ -83,6 +86,8 @@
 
 /*OFFSET 20*/
 #define DISFB BIT(15)
+#define RSVD6_MSK (0x00E00000)
+#define RSVD6_SHT (21)
 
 struct tx_desc {
        /*DWORD 0*/
index 2d8f48c..d77388b 100644 (file)
@@ -240,7 +240,7 @@ u8 r8712_sitesurvey_cmd(struct _adapter *padapter,
        init_h2fwcmd_w_parm_no_rsp(ph2c, psurveyPara,
                                   GEN_CMD_CODE(_SiteSurvey));
        psurveyPara->bsslimit = cpu_to_le32(48);
-       psurveyPara->passive_mode = cpu_to_le32(1);
+       psurveyPara->passive_mode = cpu_to_le32(pmlmepriv->passive_mode);
        psurveyPara->ss_ssidlen = 0;
        memset(psurveyPara->ss_ssid, 0, IW_ESSID_MAX_SIZE + 1);
        if ((pssid != NULL) && (pssid->SsidLength)) {
@@ -251,6 +251,7 @@ u8 r8712_sitesurvey_cmd(struct _adapter *padapter,
        r8712_enqueue_cmd(pcmdpriv, ph2c);
        _set_timer(&pmlmepriv->scan_to_timer, SCANNING_TIMEOUT);
        padapter->ledpriv.LedControlHandler(padapter, LED_CTL_SITE_SURVEY);
+       padapter->blnEnableRxFF0Filter = 0;
        return _SUCCESS;
 }
 
@@ -760,6 +761,33 @@ u8 r8712_setrttbl_cmd(struct _adapter *padapter,
        return _SUCCESS;
 }
 
+u8 r8712_gettssi_cmd(struct _adapter *padapter, u8 offset, u8 *pval)
+{
+       struct cmd_priv *pcmdpriv = &padapter->cmdpriv;
+       struct cmd_obj *ph2c;
+       struct readTSSI_parm *prdtssiparm;
+
+       ph2c = (struct cmd_obj *)_malloc(sizeof(struct cmd_obj));
+       if (ph2c == NULL)
+               return _FAIL;
+       prdtssiparm = (struct readTSSI_parm *)
+               _malloc(sizeof(struct readTSSI_parm));
+       if (prdtssiparm == NULL) {
+               kfree((unsigned char *) ph2c);
+               return _FAIL;
+       }
+       _init_listhead(&ph2c->list);
+       ph2c->cmdcode = GEN_CMD_CODE(_ReadTSSI);
+       ph2c->parmbuf = (unsigned char *)prdtssiparm;
+       ph2c->cmdsz = sizeof(struct readTSSI_parm);
+       ph2c->rsp = pval;
+       ph2c->rspsz = sizeof(struct readTSSI_rsp);
+
+       prdtssiparm->offset = offset;
+       r8712_enqueue_cmd(pcmdpriv, ph2c);
+       return _SUCCESS;
+}
+
 u8 r8712_setMacAddr_cmd(struct _adapter *padapter, u8 *mac_addr)
 {
        struct cmd_priv *pcmdpriv = &padapter->cmdpriv;
index 866554d..c475b96 100644 (file)
@@ -52,6 +52,8 @@ static sint _init_mlme_priv(struct _adapter *padapter)
        pmlmepriv->fw_state = 0;
        pmlmepriv->cur_network.network.InfrastructureMode =
                                 Ndis802_11AutoUnknown;
+       /* Maybe someday we should rename this variable to "active_mode"(Jeff)*/
+       pmlmepriv->passive_mode = 1; /* 1: active, 0: passive. */
        spin_lock_init(&(pmlmepriv->lock));
        spin_lock_init(&(pmlmepriv->lock2));
        _init_queue(&(pmlmepriv->free_bss_pool));
@@ -485,6 +487,12 @@ static int is_desired_network(struct _adapter *adapter,
        if ((psecuritypriv->PrivacyAlgrthm != _NO_PRIVACY_) &&
                    (pnetwork->network.Privacy == 0))
                bselected = false;
+       if (check_fwstate(&adapter->mlmepriv, WIFI_ADHOC_STATE) == true) {
+               if (pnetwork->network.InfrastructureMode !=
+                       adapter->mlmepriv.cur_network.network.
+                       InfrastructureMode)
+                       bselected = false;
+       }
        return bselected;
 }
 
@@ -683,9 +691,11 @@ void r8712_ind_disconnect(struct _adapter *padapter)
 {
        struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
 
-       _clr_fwstate_(pmlmepriv, _FW_LINKED);
-       padapter->ledpriv.LedControlHandler(padapter, LED_CTL_NO_LINK);
-       r8712_os_indicate_disconnect(padapter);
+       if (check_fwstate(pmlmepriv, _FW_LINKED) == true) {
+               _clr_fwstate_(pmlmepriv, _FW_LINKED);
+               padapter->ledpriv.LedControlHandler(padapter, LED_CTL_NO_LINK);
+               r8712_os_indicate_disconnect(padapter);
+       }
        if (padapter->pwrctrlpriv.pwr_mode !=
            padapter->registrypriv.power_mgnt) {
                _cancel_timer_ex(&pmlmepriv->dhcp_timer);
@@ -718,9 +728,9 @@ void r8712_joinbss_event_callback(struct _adapter *adapter, u8 *pbuf)
 
        if (sizeof(struct list_head) == 4 * sizeof(u32)) {
                pnetwork = (struct wlan_network *)
-                          _malloc(sizeof(struct wlan_network));
+                       _malloc(sizeof(struct wlan_network));
                memcpy((u8 *)pnetwork+16, (u8 *)pbuf + 8,
-                        sizeof(struct wlan_network) - 16);
+                       sizeof(struct wlan_network) - 16);
        } else
                pnetwork = (struct wlan_network *)pbuf;
 
@@ -1657,7 +1667,7 @@ void r8712_update_registrypriv_dev_network(struct _adapter *adapter)
        /* 1. Supported rates
         * 2. IE
         */
-       sz = r8712_generate_ie(pregistrypriv, adapter);
+       sz = r8712_generate_ie(pregistrypriv);
        pdev_network->IELength = sz;
        pdev_network->Length = r8712_get_ndis_wlan_bssid_ex_sz(
                              (struct ndis_wlan_bssid_ex *)pdev_network);
@@ -1802,39 +1812,3 @@ void r8712_issue_addbareq_cmd(struct _adapter *padapter, int priority)
                }
        }
 }
-
-/*the function is >= passive_level*/
-unsigned int r8712_add_ht_addt_info(struct _adapter *padapter,
-                             u8 *in_ie, u8 *out_ie,
-                             uint in_len, uint *pout_len)
-{
-       u32 ielen, out_len =  0;
-       unsigned char *p, *pframe;
-       struct ieee80211_ht_addt_info ht_addt_info;
-       struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
-       struct ht_priv *phtpriv = &pmlmepriv->htpriv;
-       struct registry_priv *pregistrypriv = &padapter->registrypriv;
-       out_len = *pout_len;
-
-       if (pregistrypriv->ht_enable == 1) {
-               p = r8712_get_ie(in_ie+12, _HT_ADD_INFO_IE_,
-                                &ielen, in_len - 12);
-               if (p && (ielen > 0)) {
-                       ; /* dummy branch */
-               } else {
-                       if (p == NULL) {
-                               int sz = sizeof(struct ieee80211_ht_addt_info);
-                               memset(&ht_addt_info, 0, sz);
-                               /*need to add the HT additional IEs*/
-                               ht_addt_info.control_chan =
-                                               pregistrypriv->channel;
-                               pframe = r8712_set_ie(out_ie + out_len,
-                                               _HT_ADD_INFO_IE_,
-                                               sz,
-                                               (unsigned char *)&ht_addt_info,
-                                               pout_len);
-                       }
-               }
-       }
-       return phtpriv->ht_option;
-}
index 8198778..a1dccec 100644 (file)
@@ -93,9 +93,9 @@ struct pkt_attrib {
 
        u16     seqnum;
        u16     ether_type;
-       u32     pktlen;         /* the original 802.3 pkt raw_data len
+       u16     pktlen;         /* the original 802.3 pkt raw_data len
                                 * (not include ether_hdr data) */
-       u32     last_txcmdsz;
+       u16     last_txcmdsz;
 
        u8      pkt_hdrlen;     /*the original 802.3 pkt header len*/
        u8      hdrlen;         /*the WLAN Header Len*/
@@ -225,6 +225,9 @@ struct      xmit_priv {
        struct semaphore tx_retevt;/*all tx return event;*/
        u8      txirp_cnt;
        struct tasklet_struct xmit_tasklet;
+       _workitem xmit_pipe4_reset_wi;
+       _workitem xmit_pipe6_reset_wi;
+       _workitem xmit_piped_reset_wi;
        /*per AC pending irp*/
        int beq_cnt;
        int bkq_cnt;
index 2ac8d33..48d6a14 100644 (file)
@@ -63,8 +63,8 @@ struct sta_info {
        struct sta_recv_priv sta_recvpriv;
        uint state;
        uint aid;
-       u8      mac_id;
-       u8      qos_option;
+       uint    mac_id;
+       uint    qos_option;
        u8      hwaddr[ETH_ALEN];
        uint    ieee8021x_blocked;      /*0: allowed, 1:blocked */
        uint    XPrivacy; /*aes, tkip...*/
index 3bcb669..0a2f274 100644 (file)
@@ -368,23 +368,25 @@ static int r871xu_drv_init(struct usb_interface *pusb_intf,
        struct _adapter *padapter = NULL;
        struct dvobj_priv *pdvobjpriv;
        struct net_device *pnetdev;
+       struct usb_device *udev;
 
        printk(KERN_INFO "r8712u: DriverVersion: %s\n", DRVER);
        /* In this probe function, O.S. will provide the usb interface pointer
         * to driver. We have to increase the reference count of the usb device
         * structure by using the usb_get_dev function.
         */
-       usb_get_dev(interface_to_usbdev(pusb_intf));
+       udev = interface_to_usbdev(pusb_intf);
+       usb_get_dev(udev);
        pintf = pusb_intf;
        /* step 1. */
        pnetdev = r8712_init_netdev();
        if (!pnetdev)
                goto error;
-       padapter = (struct _adapter *)netdev_priv(pnetdev);
+       padapter = netdev_priv(pnetdev);
        disable_ht_for_spec_devid(pdid, padapter);
        pdvobjpriv = &padapter->dvobjpriv;
        pdvobjpriv->padapter = padapter;
-       padapter->dvobjpriv.pusbdev = interface_to_usbdev(pusb_intf);
+       padapter->dvobjpriv.pusbdev = udev;
        usb_set_intfdata(pusb_intf, pnetdev);
        SET_NETDEV_DEV(pnetdev, &pusb_intf->dev);
        /* step 2. */
@@ -594,9 +596,10 @@ static int r871xu_drv_init(struct usb_interface *pusb_intf,
        /* step 6. Tell the network stack we exist */
        if (register_netdev(pnetdev) != 0)
                goto error;
+       spin_lock_init(&padapter->lockRxFF0Filter);
        return 0;
 error:
-       usb_put_dev(interface_to_usbdev(pusb_intf));
+       usb_put_dev(udev);
        usb_set_intfdata(pusb_intf, NULL);
        if (padapter->dvobj_deinit != NULL)
                padapter->dvobj_deinit(padapter);
@@ -613,6 +616,7 @@ static void r871xu_dev_remove(struct usb_interface *pusb_intf)
        struct _adapter *padapter = netdev_priv(pnetdev);
        struct usb_device *udev = interface_to_usbdev(pusb_intf);
 
+       usb_set_intfdata(pusb_intf, NULL);
        if (padapter) {
                if (drvpriv.drv_registered == true)
                        padapter->bSurpriseRemoved = true;
index b796c6b..24e1ec5 100644 (file)
@@ -334,17 +334,16 @@ void r8712_xmit_bh(void *priv)
        struct _adapter *padapter = (struct _adapter *)priv;
        struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
 
-       while (1) {
-               if ((padapter->bDriverStopped == true) ||
-                   (padapter->bSurpriseRemoved == true)) {
-                       printk(KERN_ERR "r8712u: xmit_bh => bDriverStopped"
-                              " or bSurpriseRemoved\n");
-                       break;
-               }
-               ret = r8712_xmitframe_complete(padapter, pxmitpriv, NULL);
-               if (ret == false)
-                       break;
+       if ((padapter->bDriverStopped == true) ||
+           (padapter->bSurpriseRemoved == true)) {
+               printk(KERN_ERR "r8712u: xmit_bh => bDriverStopped"
+                      " or bSurpriseRemoved\n");
+               return;
        }
+       ret = r8712_xmitframe_complete(padapter, pxmitpriv, NULL);
+       if (ret == false)
+               return;
+       tasklet_hi_schedule(&pxmitpriv->xmit_tasklet);
 }
 
 static void usb_write_port_complete(struct urb *purb)