--- /dev/null
+/******************************************************************************
+ * rtl8712_recv.c
+ *
+ * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
+ * Linux device driver for RTL8192SU
+ *
+ * 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
+ *
+ * Modifications for inclusion into the Linux staging tree are
+ * Copyright(c) 2010 Larry Finger. All rights reserved.
+ *
+ * Contact information:
+ * WLAN FAE <wlanfae@realtek.com>
+ * Larry Finger <Larry.Finger@lwfinger.net>
+ *
+ ******************************************************************************/
+
+#define _RTL8712_RECV_C_
+
+#include "osdep_service.h"
+#include "drv_types.h"
+#include "recv_osdep.h"
+#include "mlme_osdep.h"
+#include "ip.h"
+#include "if_ether.h"
+#include "ethernet.h"
+#include "usb_ops.h"
+#include "wifi.h"
+
+/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
+static u8 bridge_tunnel_header[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8};
+
+/* Ethernet-II snap header (RFC1042 for most EtherTypes) */
+static u8 rfc1042_header[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
+
+static void recv_tasklet(void *priv);
+
+int r8712_init_recv_priv(struct recv_priv *precvpriv, struct _adapter *padapter)
+{
+ int i;
+ struct recv_buf *precvbuf;
+ int res = _SUCCESS;
+ addr_t tmpaddr = 0;
+ int alignment = 0;
+ struct sk_buff *pskb = NULL;
+
+ sema_init(&precvpriv->recv_sema, 0);
+ sema_init(&precvpriv->terminate_recvthread_sema, 0);
+ /*init recv_buf*/
+ _init_queue(&precvpriv->free_recv_buf_queue);
+ precvpriv->pallocated_recv_buf = _malloc(NR_RECVBUFF *
+ sizeof(struct recv_buf) + 4);
+ if (precvpriv->pallocated_recv_buf == NULL)
+ return _FAIL;
+ memset(precvpriv->pallocated_recv_buf, 0, NR_RECVBUFF *
+ sizeof(struct recv_buf) + 4);
+ precvpriv->precv_buf = precvpriv->pallocated_recv_buf + 4 -
+ ((addr_t) (precvpriv->pallocated_recv_buf) & 3);
+ precvbuf = (struct recv_buf *)precvpriv->precv_buf;
+ for (i = 0; i < NR_RECVBUFF; i++) {
+ _init_listhead(&precvbuf->list);
+ spin_lock_init(&precvbuf->recvbuf_lock);
+ res = r8712_os_recvbuf_resource_alloc(padapter, precvbuf);
+ if (res == _FAIL)
+ break;
+ precvbuf->ref_cnt = 0;
+ precvbuf->adapter = padapter;
+ list_insert_tail(&precvbuf->list,
+ &(precvpriv->free_recv_buf_queue.queue));
+ precvbuf++;
+ }
+ precvpriv->free_recv_buf_queue_cnt = NR_RECVBUFF;
+ tasklet_init(&precvpriv->recv_tasklet,
+ (void(*)(unsigned long))recv_tasklet,
+ (unsigned long)padapter);
+ skb_queue_head_init(&precvpriv->rx_skb_queue);
+
+ skb_queue_head_init(&precvpriv->free_recv_skb_queue);
+ for (i = 0; i < NR_PREALLOC_RECV_SKB; i++) {
+ pskb = netdev_alloc_skb(padapter->pnetdev, MAX_RECVBUF_SZ +
+ RECVBUFF_ALIGN_SZ);
+ if (pskb) {
+ pskb->dev = padapter->pnetdev;
+ tmpaddr = (addr_t)pskb->data;
+ alignment = tmpaddr & (RECVBUFF_ALIGN_SZ-1);
+ skb_reserve(pskb, (RECVBUFF_ALIGN_SZ - alignment));
+ skb_queue_tail(&precvpriv->free_recv_skb_queue, pskb);
+ }
+ pskb = NULL;
+ }
+ return res;
+}
+
+void r8712_free_recv_priv(struct recv_priv *precvpriv)
+{
+ int i;
+ struct recv_buf *precvbuf;
+ struct _adapter *padapter = precvpriv->adapter;
+
+ precvbuf = (struct recv_buf *)precvpriv->precv_buf;
+ for (i = 0; i < NR_RECVBUFF ; i++) {
+ r8712_os_recvbuf_resource_free(padapter, precvbuf);
+ precvbuf++;
+ }
+ kfree(precvpriv->pallocated_recv_buf);
+ skb_queue_purge(&precvpriv->rx_skb_queue);
+ if (skb_queue_len(&precvpriv->rx_skb_queue))
+ printk(KERN_WARNING "r8712u: rx_skb_queue not empty\n");
+ skb_queue_purge(&precvpriv->free_recv_skb_queue);
+ if (skb_queue_len(&precvpriv->free_recv_skb_queue))
+ printk(KERN_WARNING "r8712u: free_recv_skb_queue not empty "
+ "%d\n", skb_queue_len(&precvpriv->free_recv_skb_queue));
+}
+
+int r8712_init_recvbuf(struct _adapter *padapter, struct recv_buf *precvbuf)
+{
+ int res = _SUCCESS;
+
+ precvbuf->transfer_len = 0;
+ precvbuf->len = 0;
+ precvbuf->ref_cnt = 0;
+ if (precvbuf->pbuf) {
+ precvbuf->pdata = precvbuf->pbuf;
+ precvbuf->phead = precvbuf->pbuf;
+ precvbuf->ptail = precvbuf->pbuf;
+ precvbuf->pend = precvbuf->pdata + MAX_RECVBUF_SZ;
+ }
+ return res;
+}
+
+int r8712_free_recvframe(union recv_frame *precvframe,
+ struct __queue *pfree_recv_queue)
+{
+ unsigned long irqL;
+ struct _adapter *padapter = precvframe->u.hdr.adapter;
+ struct recv_priv *precvpriv = &padapter->recvpriv;
+
+ if (precvframe->u.hdr.pkt) {
+ dev_kfree_skb_any(precvframe->u.hdr.pkt);/*free skb by driver*/
+ precvframe->u.hdr.pkt = NULL;
+ }
+ spin_lock_irqsave(&pfree_recv_queue->lock, irqL);
+ list_delete(&(precvframe->u.hdr.list));
+ list_insert_tail(&(precvframe->u.hdr.list),
+ get_list_head(pfree_recv_queue));
+ if (padapter != NULL) {
+ if (pfree_recv_queue == &precvpriv->free_recv_queue)
+ precvpriv->free_recvframe_cnt++;
+ }
+ spin_unlock_irqrestore(&pfree_recv_queue->lock, irqL);
+ return _SUCCESS;
+}
+
+static void update_recvframe_attrib_from_recvstat(struct rx_pkt_attrib *pattrib,
+ struct recv_stat *prxstat)
+{
+ u32 *pphy_info;
+ struct phy_stat *pphy_stat;
+ u16 drvinfo_sz = 0;
+
+ drvinfo_sz = (le32_to_cpu(prxstat->rxdw0)&0x000f0000)>>16;
+ drvinfo_sz = drvinfo_sz<<3;
+ /*TODO:
+ * Offset 0 */
+ pattrib->bdecrypted = ((le32_to_cpu(prxstat->rxdw0) & BIT(27)) >> 27)
+ ? 0 : 1;
+ pattrib->crc_err = ((le32_to_cpu(prxstat->rxdw0) & BIT(14)) >> 14);
+ /*Offset 4*/
+ /*Offset 8*/
+ /*Offset 12*/
+ if (le32_to_cpu(prxstat->rxdw3) & BIT(13)) {
+ pattrib->tcpchk_valid = 1; /* valid */
+ if (le32_to_cpu(prxstat->rxdw3) & BIT(11))
+ pattrib->tcp_chkrpt = 1; /* correct */
+ else
+ pattrib->tcp_chkrpt = 0; /* incorrect */
+ if (le32_to_cpu(prxstat->rxdw3) & BIT(12))
+ pattrib->ip_chkrpt = 1; /* correct */
+ else
+ pattrib->ip_chkrpt = 0; /* incorrect */
+ } 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);
+ /*Offset 16*/
+ /*Offset 20*/
+ /*phy_info*/
+ if (drvinfo_sz) {
+ pphy_stat = (struct phy_stat *)(prxstat+1);
+ pphy_info = (u32 *)prxstat+1;
+ }
+}
+
+/*perform defrag*/
+static union recv_frame *recvframe_defrag(struct _adapter *adapter,
+ struct __queue *defrag_q)
+{
+ struct list_head *plist, *phead;
+ u8 wlanhdr_offset;
+ u8 curfragnum;
+ struct recv_frame_hdr *pfhdr, *pnfhdr;
+ union recv_frame *prframe, *pnextrframe;
+ struct __queue *pfree_recv_queue;
+
+ pfree_recv_queue = &adapter->recvpriv.free_recv_queue;
+ phead = get_list_head(defrag_q);
+ plist = get_next(phead);
+ prframe = LIST_CONTAINOR(plist, union recv_frame, u);
+ list_delete(&prframe->u.list);
+ pfhdr = &prframe->u.hdr;
+ curfragnum = 0;
+ if (curfragnum != pfhdr->attrib.frag_num) {
+ /*the first fragment number must be 0
+ *free the whole queue*/
+ r8712_free_recvframe(prframe, pfree_recv_queue);
+ prframe = NULL;
+ goto exit;
+ }
+ plist = get_next(phead);
+ 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++;
+ 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;
+ }
+ /* 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;
+ recvframe_pull(pnextrframe, wlanhdr_offset);
+ /* append to first fragment frame's tail (if privacy frame,
+ * pull the ICV) */
+ recvframe_pull_tail(prframe, pfhdr->attrib.icv_len);
+ memcpy(pfhdr->rx_tail, pnfhdr->rx_data, pnfhdr->len);
+ recvframe_put(prframe, pnfhdr->len);
+ 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;
+}
+
+/* check if need to defrag, if needed queue the frame to defrag_q */
+union recv_frame *r8712_recvframe_chk_defrag(struct _adapter *padapter,
+ union recv_frame *precv_frame)
+{
+ u8 ismfrag;
+ u8 fragnum;
+ u8 *psta_addr;
+ struct recv_frame_hdr *pfhdr;
+ struct sta_info *psta;
+ struct sta_priv *pstapriv ;
+ struct list_head *phead;
+ union recv_frame *prtnframe = NULL;
+ struct __queue *pfree_recv_queue, *pdefrag_q;
+
+ pstapriv = &padapter->stapriv;
+ pfhdr = &precv_frame->u.hdr;
+ pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
+ /* need to define struct of wlan header frame ctrl */
+ ismfrag = pfhdr->attrib.mfrag;
+ fragnum = pfhdr->attrib.frag_num;
+ psta_addr = pfhdr->attrib.ta;
+ psta = r8712_get_stainfo(pstapriv, psta_addr);
+ if (psta == NULL)
+ pdefrag_q = NULL;
+ else
+ pdefrag_q = &psta->sta_recvpriv.defrag_q;
+
+ if ((ismfrag == 0) && (fragnum == 0))
+ prtnframe = precv_frame;/*isn't a fragment frame*/
+ if (ismfrag == 1) {
+ /* 0~(n-1) fragment frame
+ * enqueue to defraf_g */
+ if (pdefrag_q != NULL) {
+ if (fragnum == 0) {
+ /*the first fragment*/
+ if (_queue_empty(pdefrag_q) == false) {
+ /*free current defrag_q */
+ r8712_free_recvframe_queue(pdefrag_q,
+ pfree_recv_queue);
+ }
+ }
+ /* Then enqueue the 0~(n-1) fragment to the defrag_q */
+ phead = get_list_head(pdefrag_q);
+ list_insert_tail(&pfhdr->list, phead);
+ prtnframe = NULL;
+ } else {
+ /* can't find this ta's defrag_queue, so free this
+ * recv_frame */
+ r8712_free_recvframe(precv_frame, pfree_recv_queue);
+ prtnframe = NULL;
+ }
+
+ }
+ if ((ismfrag == 0) && (fragnum != 0)) {
+ /* the last fragment frame
+ * enqueue the last fragment */
+ if (pdefrag_q != NULL) {
+ phead = get_list_head(pdefrag_q);
+ list_insert_tail(&pfhdr->list, phead);
+ /*call recvframe_defrag to defrag*/
+ precv_frame = recvframe_defrag(padapter, pdefrag_q);
+ prtnframe = precv_frame;
+ } else {
+ /* can't find this ta's defrag_queue, so free this
+ * recv_frame */
+ r8712_free_recvframe(precv_frame, pfree_recv_queue);
+ prtnframe = NULL;
+ }
+ }
+ if ((prtnframe != NULL) && (prtnframe->u.hdr.attrib.privacy)) {
+ /* after defrag we must check tkip mic code */
+ if (r8712_recvframe_chkmic(padapter, prtnframe) == _FAIL) {
+ r8712_free_recvframe(prtnframe, pfree_recv_queue);
+ prtnframe = NULL;
+ }
+ }
+ return prtnframe;
+}
+
+static int amsdu_to_msdu(struct _adapter *padapter, union recv_frame *prframe)
+{
+ int a_len, padding_len;
+ u16 eth_type, nSubframe_Length;
+ u8 nr_subframes, i;
+ unsigned char *data_ptr, *pdata;
+ struct rx_pkt_attrib *pattrib;
+ _pkt *sub_skb, *subframes[MAX_SUBFRAME_COUNT];
+ struct recv_priv *precvpriv = &padapter->recvpriv;
+ struct __queue *pfree_recv_queue = &(precvpriv->free_recv_queue);
+ int ret = _SUCCESS;
+
+ nr_subframes = 0;
+ pattrib = &prframe->u.hdr.attrib;
+ recvframe_pull(prframe, prframe->u.hdr.attrib.hdrlen);
+ if (prframe->u.hdr.attrib.iv_len > 0)
+ recvframe_pull(prframe, prframe->u.hdr.attrib.iv_len);
+ a_len = prframe->u.hdr.len;
+ pdata = prframe->u.hdr.rx_data;
+ while (a_len > ETH_HLEN) {
+ /* Offset 12 denote 2 mac address */
+ nSubframe_Length = *((u16 *)(pdata + 12));
+ /*==m==>change the length order*/
+ nSubframe_Length = (nSubframe_Length >> 8) +
+ (nSubframe_Length << 8);
+ if (a_len < (ETHERNET_HEADER_SIZE + nSubframe_Length)) {
+ printk(KERN_WARNING "r8712u: nRemain_Length is %d and"
+ " nSubframe_Length is: %d\n",
+ a_len, nSubframe_Length);
+ goto exit;
+ }
+ /* move the data point to data content */
+ pdata += ETH_HLEN;
+ a_len -= ETH_HLEN;
+ /* Allocate new skb for releasing to upper layer */
+ sub_skb = dev_alloc_skb(nSubframe_Length + 12);
+ skb_reserve(sub_skb, 12);
+ data_ptr = (u8 *)skb_put(sub_skb, nSubframe_Length);
+ memcpy(data_ptr, pdata, nSubframe_Length);
+ subframes[nr_subframes++] = sub_skb;
+ if (nr_subframes >= MAX_SUBFRAME_COUNT) {
+ printk(KERN_WARNING "r8712u: ParseSubframe(): Too"
+ " many Subframes! Packets dropped!\n");
+ break;
+ }
+ pdata += nSubframe_Length;
+ a_len -= nSubframe_Length;
+ if (a_len != 0) {
+ padding_len = 4 - ((nSubframe_Length + ETH_HLEN) & 3);
+ if (padding_len == 4)
+ padding_len = 0;
+ if (a_len < padding_len)
+ goto exit;
+ pdata += padding_len;
+ a_len -= padding_len;
+ }
+ }
+ for (i = 0; i < nr_subframes; i++) {
+ sub_skb = subframes[i];
+ /* convert hdr + possible LLC headers into Ethernet header */
+ eth_type = (sub_skb->data[6] << 8) | sub_skb->data[7];
+ if (sub_skb->len >= 8 &&
+ ((!memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) &&
+ eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) ||
+ !memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE))) {
+ /* remove RFC1042 or Bridge-Tunnel encapsulation and
+ * replace EtherType */
+ skb_pull(sub_skb, SNAP_SIZE);
+ memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src,
+ ETH_ALEN);
+ memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst,
+ ETH_ALEN);
+ } else {
+ u16 len;
+ /* Leave Ethernet header part of hdr and full payload */
+ len = htons(sub_skb->len);
+ memcpy(skb_push(sub_skb, 2), &len, 2);
+ memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->src,
+ ETH_ALEN);
+ memcpy(skb_push(sub_skb, ETH_ALEN), pattrib->dst,
+ ETH_ALEN);
+ }
+ /* Indicate the packets to upper layer */
+ if (sub_skb) {
+ sub_skb->protocol =
+ eth_type_trans(sub_skb, padapter->pnetdev);
+ sub_skb->dev = padapter->pnetdev;
+ if ((pattrib->tcpchk_valid == 1) &&
+ (pattrib->tcp_chkrpt == 1)) {
+ sub_skb->ip_summed = CHECKSUM_UNNECESSARY;
+ } else
+ sub_skb->ip_summed = CHECKSUM_NONE;
+ netif_rx(sub_skb);
+ }
+ }
+exit:
+ prframe->u.hdr.len = 0;
+ r8712_free_recvframe(prframe, pfree_recv_queue);
+ return ret;
+}
+
+void r8712_rxcmd_event_hdl(struct _adapter *padapter, void *prxcmdbuf)
+{
+ uint voffset;
+ u8 *poffset;
+ u16 pkt_len, cmd_len, drvinfo_sz;
+ u8 eid, cmd_seq;
+ struct recv_stat *prxstat;
+
+ poffset = (u8 *)prxcmdbuf;
+ voffset = *(uint *)poffset;
+ pkt_len = le32_to_cpu(voffset) & 0x00003fff;
+ prxstat = (struct recv_stat *)prxcmdbuf;
+ drvinfo_sz = ((le32_to_cpu(prxstat->rxdw0) & 0x000f0000) >> 16);
+ drvinfo_sz = drvinfo_sz << 3;
+ poffset += RXDESC_SIZE + drvinfo_sz;
+ do {
+ voffset = *(uint *)poffset;
+ cmd_len = (u16)(le32_to_cpu(voffset) & 0xffff);
+ cmd_seq = (u8)((le32_to_cpu(voffset) >> 24) & 0x7f);
+ eid = (u8)((le32_to_cpu(voffset) >> 16) & 0xff);
+ r8712_event_handle(padapter, (uint *)poffset);
+ poffset += (cmd_len + 8);/*8 bytes aligment*/
+ } while (le32_to_cpu(voffset) & BIT(31));
+
+}
+
+static int check_indicate_seq(struct recv_reorder_ctrl *preorder_ctrl,
+ u16 seq_num)
+{
+ u8 wsize = preorder_ctrl->wsize_b;
+ u16 wend = (preorder_ctrl->indicate_seq + wsize - 1) % 4096;
+
+ /* Rx Reorder initialize condition.*/
+ if (preorder_ctrl->indicate_seq == 0xffff)
+ preorder_ctrl->indicate_seq = seq_num;
+ /* Drop out the packet which SeqNum is smaller than WinStart */
+ if (SN_LESS(seq_num, preorder_ctrl->indicate_seq))
+ return false;
+ /*
+ * Sliding window manipulation. Conditions includes:
+ * 1. Incoming SeqNum is equal to WinStart =>Window shift 1
+ * 2. Incoming SeqNum is larger than the WinEnd => Window shift N
+ */
+ if (SN_EQUAL(seq_num, preorder_ctrl->indicate_seq))
+ preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq +
+ 1) % 4096;
+ else if (SN_LESS(wend, seq_num)) {
+ if (seq_num >= (wsize - 1))
+ preorder_ctrl->indicate_seq = seq_num + 1 - wsize;
+ else
+ preorder_ctrl->indicate_seq = 4095 - (wsize -
+ (seq_num + 1)) + 1;
+ }
+ return true;
+}
+
+static int enqueue_reorder_recvframe(struct recv_reorder_ctrl *preorder_ctrl,
+ union recv_frame *prframe)
+{
+ struct list_head *phead, *plist;
+ union recv_frame *pnextrframe;
+ struct rx_pkt_attrib *pnextattrib;
+ struct __queue *ppending_recvframe_queue =
+ &preorder_ctrl->pending_recvframe_queue;
+ struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib;
+
+ phead = get_list_head(ppending_recvframe_queue);
+ plist = get_next(phead);
+ while (end_of_queue_search(phead, plist) == false) {
+ pnextrframe = LIST_CONTAINOR(plist, union recv_frame, u);
+ pnextattrib = &pnextrframe->u.hdr.attrib;
+ if (SN_LESS(pnextattrib->seq_num, pattrib->seq_num))
+ plist = get_next(plist);
+ else if (SN_EQUAL(pnextattrib->seq_num, pattrib->seq_num))
+ return false;
+ else
+ break;
+ }
+ list_delete(&(prframe->u.hdr.list));
+ list_insert_tail(&(prframe->u.hdr.list), plist);
+ return true;
+}
+
+int r8712_recv_indicatepkts_in_order(struct _adapter *padapter,
+ struct recv_reorder_ctrl *preorder_ctrl,
+ int bforced)
+{
+ struct list_head *phead, *plist;
+ union recv_frame *prframe;
+ struct rx_pkt_attrib *pattrib;
+ int bPktInBuf = false;
+ struct recv_priv *precvpriv = &padapter->recvpriv;
+ struct __queue *ppending_recvframe_queue =
+ &preorder_ctrl->pending_recvframe_queue;
+
+ phead = get_list_head(ppending_recvframe_queue);
+ plist = get_next(phead);
+ /* Handling some condition for forced indicate case.*/
+ if (bforced == true) {
+ if (is_list_empty(phead))
+ return true;
+ else {
+ prframe = LIST_CONTAINOR(plist, union recv_frame, u);
+ pattrib = &prframe->u.hdr.attrib;
+ preorder_ctrl->indicate_seq = pattrib->seq_num;
+ }
+ }
+ /* Prepare indication list and indication.
+ * Check if there is any packet need indicate. */
+ while (!is_list_empty(phead)) {
+ prframe = LIST_CONTAINOR(plist, union recv_frame, u);
+ pattrib = &prframe->u.hdr.attrib;
+ if (!SN_LESS(preorder_ctrl->indicate_seq, pattrib->seq_num)) {
+ plist = get_next(plist);
+ list_delete(&(prframe->u.hdr.list));
+ if (SN_EQUAL(preorder_ctrl->indicate_seq,
+ pattrib->seq_num))
+ preorder_ctrl->indicate_seq =
+ (preorder_ctrl->indicate_seq + 1) % 4096;
+ /*indicate this recv_frame*/
+ if (!pattrib->amsdu) {
+ if ((padapter->bDriverStopped == false) &&
+ (padapter->bSurpriseRemoved == false)) {
+ /* indicate this recv_frame */
+ r8712_recv_indicatepkt(padapter,
+ prframe);
+ }
+ } else if (pattrib->amsdu == 1) {
+ if (amsdu_to_msdu(padapter, prframe) !=
+ _SUCCESS)
+ r8712_free_recvframe(prframe,
+ &precvpriv->free_recv_queue);
+ }
+ /* Update local variables. */
+ bPktInBuf = false;
+ } else {
+ bPktInBuf = true;
+ break;
+ }
+ }
+ return bPktInBuf;
+}
+
+static int recv_indicatepkt_reorder(struct _adapter *padapter,
+ union recv_frame *prframe)
+{
+ unsigned long irql;
+ struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib;
+ struct recv_reorder_ctrl *preorder_ctrl = prframe->u.hdr.preorder_ctrl;
+ struct __queue *ppending_recvframe_queue =
+ &preorder_ctrl->pending_recvframe_queue;
+
+ if (!pattrib->amsdu) {
+ /* s1. */
+ r8712_wlanhdr_to_ethhdr(prframe);
+ if (pattrib->qos != 1) {
+ if ((padapter->bDriverStopped == false) &&
+ (padapter->bSurpriseRemoved == false)) {
+ r8712_recv_indicatepkt(padapter, prframe);
+ return _SUCCESS;
+ } else
+ return _FAIL;
+ }
+ }
+ spin_lock_irqsave(&ppending_recvframe_queue->lock, irql);
+ /*s2. check if winstart_b(indicate_seq) needs to been updated*/
+ if (!check_indicate_seq(preorder_ctrl, pattrib->seq_num))
+ goto _err_exit;
+ /*s3. Insert all packet into Reorder Queue to maintain its ordering.*/
+ if (!enqueue_reorder_recvframe(preorder_ctrl, prframe))
+ goto _err_exit;
+ /*s4.
+ * Indication process.
+ * After Packet dropping and Sliding Window shifting as above, we can
+ * now just indicate the packets with the SeqNum smaller than latest
+ * WinStart and buffer other packets.
+ *
+ * For Rx Reorder condition:
+ * 1. All packets with SeqNum smaller than WinStart => Indicate
+ * 2. All packets with SeqNum larger than or equal to
+ * WinStart => Buffer it.
+ */
+ if (r8712_recv_indicatepkts_in_order(padapter, preorder_ctrl, false) ==
+ true) {
+ _set_timer(&preorder_ctrl->reordering_ctrl_timer,
+ REORDER_WAIT_TIME);
+ spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql);
+ } else {
+ spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql);
+ _cancel_timer_ex(&preorder_ctrl->reordering_ctrl_timer);
+ }
+ return _SUCCESS;
+_err_exit:
+ spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql);
+ return _FAIL;
+}
+
+void r8712_reordering_ctrl_timeout_handler(void *pcontext)
+{
+ unsigned long irql;
+ struct recv_reorder_ctrl *preorder_ctrl =
+ (struct recv_reorder_ctrl *)pcontext;
+ struct _adapter *padapter = preorder_ctrl->padapter;
+ struct __queue *ppending_recvframe_queue =
+ &preorder_ctrl->pending_recvframe_queue;
+
+ if (padapter->bDriverStopped || padapter->bSurpriseRemoved)
+ return;
+ spin_lock_irqsave(&ppending_recvframe_queue->lock, irql);
+ r8712_recv_indicatepkts_in_order(padapter, preorder_ctrl, true);
+ spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql);
+}
+
+static int r8712_process_recv_indicatepkts(struct _adapter *padapter,
+ union recv_frame *prframe)
+{
+ int retval = _SUCCESS;
+ struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
+ struct ht_priv *phtpriv = &pmlmepriv->htpriv;
+
+ if (phtpriv->ht_option == 1) { /*B/G/N Mode*/
+ if (recv_indicatepkt_reorder(padapter, prframe) != _SUCCESS) {
+ /* including perform A-MPDU Rx Ordering Buffer Control*/
+ if ((padapter->bDriverStopped == false) &&
+ (padapter->bSurpriseRemoved == false))
+ return _FAIL;
+ }
+ } else { /*B/G mode*/
+ retval = r8712_wlanhdr_to_ethhdr(prframe);
+ if (retval != _SUCCESS)
+ return retval;
+ if ((padapter->bDriverStopped == false) &&
+ (padapter->bSurpriseRemoved == false)) {
+ /* indicate this recv_frame */
+ r8712_recv_indicatepkt(padapter, prframe);
+ } else
+ return _FAIL;
+ }
+ return retval;
+}
+
+static u8 query_rx_pwr_percentage(s8 antpower)
+{
+ if ((antpower <= -100) || (antpower >= 20))
+ return 0;
+ else if (antpower >= 0)
+ return 100;
+ else
+ return 100 + antpower;
+}
+
+static u8 evm_db2percentage(s8 value)
+{
+ /*
+ * -33dB~0dB to 0%~99%
+ */
+ s8 ret_val;
+
+ ret_val = value;
+ if (ret_val >= 0)
+ ret_val = 0;
+ if (ret_val <= -33)
+ ret_val = -33;
+ ret_val = -ret_val;
+ ret_val *= 3;
+ if (ret_val == 99)
+ ret_val = 100;
+ return ret_val;
+}
+
+s32 r8712_signal_scale_mapping(s32 cur_sig)
+{
+ s32 ret_sig;
+
+ if (cur_sig >= 51 && cur_sig <= 100)
+ ret_sig = 100;
+ else if (cur_sig >= 41 && cur_sig <= 50)
+ ret_sig = 80 + ((cur_sig - 40) * 2);
+ else if (cur_sig >= 31 && cur_sig <= 40)
+ ret_sig = 66 + (cur_sig - 30);
+ else if (cur_sig >= 21 && cur_sig <= 30)
+ ret_sig = 54 + (cur_sig - 20);
+ else if (cur_sig >= 10 && cur_sig <= 20)
+ ret_sig = 42 + (((cur_sig - 10) * 2) / 3);
+ else if (cur_sig >= 5 && cur_sig <= 9)
+ ret_sig = 22 + (((cur_sig - 5) * 3) / 2);
+ else if (cur_sig >= 1 && cur_sig <= 4)
+ ret_sig = 6 + (((cur_sig - 1) * 3) / 2);
+ else
+ ret_sig = cur_sig;
+ return ret_sig;
+}
+
+static s32 translate2dbm(struct _adapter *padapter, u8 signal_strength_idx)
+{
+ s32 signal_power; /* in dBm.*/
+ /* Translate to dBm (x=0.5y-95).*/
+ signal_power = (s32)((signal_strength_idx + 1) >> 1);
+ signal_power -= 95;
+ return signal_power;
+}
+
+static void query_rx_phy_status(struct _adapter *padapter,
+ union recv_frame *prframe)
+{
+ u8 i, max_spatial_stream, evm;
+ struct recv_stat *prxstat = (struct recv_stat *)prframe->u.hdr.rx_head;
+ struct phy_stat *pphy_stat = (struct phy_stat *)(prxstat + 1);
+ u8 *pphy_head = (u8 *)(prxstat + 1);
+ s8 rx_pwr[4], rx_pwr_all;
+ u8 pwdb_all;
+ u32 rssi, total_rssi = 0;
+ u8 bcck_rate = 0, rf_rx_num = 0, cck_highpwr = 0;
+ struct phy_cck_rx_status *pcck_buf;
+ u8 sq;
+
+ /* Record it for next packet processing*/
+ bcck_rate = (prframe->u.hdr.attrib.mcs_rate <= 3 ? 1 : 0);
+ if (bcck_rate) {
+ u8 report;
+
+ /* CCK Driver info Structure is not the same as OFDM packet.*/
+ pcck_buf = (struct phy_cck_rx_status *)pphy_stat;
+ /* (1)Hardware does not provide RSSI for CCK
+ * (2)PWDB, Average PWDB cacluated by hardware
+ * (for rate adaptive)
+ */
+ if (!cck_highpwr) {
+ report = pcck_buf->cck_agc_rpt & 0xc0;
+ report = report >> 6;
+ switch (report) {
+ /* Modify the RF RNA gain value to -40, -20,
+ * -2, 14 by Jenyu's suggestion
+ * Note: different RF with the different
+ * RNA gain. */
+ case 0x3:
+ rx_pwr_all = -40 - (pcck_buf->cck_agc_rpt &
+ 0x3e);
+ break;
+ case 0x2:
+ rx_pwr_all = -20 - (pcck_buf->cck_agc_rpt &
+ 0x3e);
+ break;
+ case 0x1:
+ rx_pwr_all = -2 - (pcck_buf->cck_agc_rpt &
+ 0x3e);
+ break;
+ case 0x0:
+ rx_pwr_all = 14 - (pcck_buf->cck_agc_rpt &
+ 0x3e);
+ break;
+ }
+ } else {
+ report = ((u8)(le32_to_cpu(pphy_stat->phydw1) >> 8)) &
+ 0x60;
+ report = report >> 5;
+ switch (report) {
+ case 0x3:
+ rx_pwr_all = -40 - ((pcck_buf->cck_agc_rpt &
+ 0x1f) << 1);
+ break;
+ case 0x2:
+ rx_pwr_all = -20 - ((pcck_buf->cck_agc_rpt &
+ 0x1f) << 1);
+ break;
+ case 0x1:
+ rx_pwr_all = -2 - ((pcck_buf->cck_agc_rpt &
+ 0x1f) << 1);
+ break;
+ case 0x0:
+ rx_pwr_all = 14 - ((pcck_buf->cck_agc_rpt &
+ 0x1f) << 1);
+ break;
+ }
+ }
+ pwdb_all = query_rx_pwr_percentage(rx_pwr_all);
+ /* CCK gain is smaller than OFDM/MCS gain,*/
+ /* so we add gain diff by experiences, the val is 6 */
+ pwdb_all += 6;
+ if (pwdb_all > 100)
+ pwdb_all = 100;
+ /* modify the offset to make the same gain index with OFDM.*/
+ if (pwdb_all > 34 && pwdb_all <= 42)
+ pwdb_all -= 2;
+ else if (pwdb_all > 26 && pwdb_all <= 34)
+ pwdb_all -= 6;
+ else if (pwdb_all > 14 && pwdb_all <= 26)
+ pwdb_all -= 8;
+ else if (pwdb_all > 4 && pwdb_all <= 14)
+ pwdb_all -= 4;
+ /*
+ * (3) Get Signal Quality (EVM)
+ */
+ if (pwdb_all > 40)
+ sq = 100;
+ else {
+ sq = pcck_buf->sq_rpt;
+ if (pcck_buf->sq_rpt > 64)
+ sq = 0;
+ else if (pcck_buf->sq_rpt < 20)
+ sq = 100;
+ else
+ sq = ((64-sq) * 100) / 44;
+ }
+ prframe->u.hdr.attrib.signal_qual = sq;
+ prframe->u.hdr.attrib.rx_mimo_signal_qual[0] = sq;
+ prframe->u.hdr.attrib.rx_mimo_signal_qual[1] = -1;
+ } else {
+ /* (1)Get RSSI for HT rate */
+ for (i = 0; i < ((padapter->registrypriv.rf_config) &
+ 0x0f) ; i++) {
+ rf_rx_num++;
+ rx_pwr[i] = ((pphy_head[PHY_STAT_GAIN_TRSW_SHT + i]
+ & 0x3F) * 2) - 110;
+ /* Translate DBM to percentage. */
+ rssi = query_rx_pwr_percentage(rx_pwr[i]);
+ total_rssi += rssi;
+ }
+ /* (2)PWDB, Average PWDB cacluated by hardware (for
+ * rate adaptive) */
+ rx_pwr_all = (((pphy_head[PHY_STAT_PWDB_ALL_SHT]) >> 1) & 0x7f)
+ - 106;
+ pwdb_all = query_rx_pwr_percentage(rx_pwr_all);
+
+ {
+ /* (3)EVM of HT rate */
+ if (prframe->u.hdr.attrib.htc &&
+ prframe->u.hdr.attrib.mcs_rate >= 20 &&
+ prframe->u.hdr.attrib.mcs_rate <= 27) {
+ /* both spatial stream make sense */
+ max_spatial_stream = 2;
+ } else {
+ /* only spatial stream 1 makes sense */
+ max_spatial_stream = 1;
+ }
+ for (i = 0; i < max_spatial_stream; i++) {
+ evm = evm_db2percentage((pphy_head
+ [PHY_STAT_RXEVM_SHT + i]));/*dbm*/
+ prframe->u.hdr.attrib.signal_qual =
+ (u8)(evm & 0xff);
+ prframe->u.hdr.attrib.rx_mimo_signal_qual[i] =
+ (u8)(evm & 0xff);
+ }
+ }
+ }
+ /* UI BSS List signal strength(in percentage), make it good looking,
+ * from 0~100. It is assigned to the BSS List in
+ * GetValueFromBeaconOrProbeRsp(). */
+ if (bcck_rate)
+ prframe->u.hdr.attrib.signal_strength =
+ (u8)r8712_signal_scale_mapping(pwdb_all);
+ else {
+ if (rf_rx_num != 0)
+ prframe->u.hdr.attrib.signal_strength =
+ (u8)(r8712_signal_scale_mapping(total_rssi /=
+ rf_rx_num));
+ }
+}
+
+static void process_link_qual(struct _adapter *padapter,
+ union recv_frame *prframe)
+{
+ u32 last_evm = 0, tmpVal;
+ struct rx_pkt_attrib *pattrib;
+
+ if (prframe == NULL || padapter == NULL)
+ return;
+ pattrib = &prframe->u.hdr.attrib;
+ if (pattrib->signal_qual != 0) {
+ /*
+ * 1. Record the general EVM to the sliding window.
+ */
+ if (padapter->recvpriv.signal_qual_data.total_num++ >=
+ PHY_LINKQUALITY_SLID_WIN_MAX) {
+ padapter->recvpriv.signal_qual_data.total_num =
+ PHY_LINKQUALITY_SLID_WIN_MAX;
+ last_evm = padapter->recvpriv.signal_qual_data.elements
+ [padapter->recvpriv.signal_qual_data.index];
+ padapter->recvpriv.signal_qual_data.total_val -=
+ last_evm;
+ }
+ padapter->recvpriv.signal_qual_data.total_val +=
+ pattrib->signal_qual;
+ padapter->recvpriv.signal_qual_data.elements[padapter->
+ recvpriv.signal_qual_data.index++] =
+ pattrib->signal_qual;
+ if (padapter->recvpriv.signal_qual_data.index >=
+ PHY_LINKQUALITY_SLID_WIN_MAX)
+ padapter->recvpriv.signal_qual_data.index = 0;
+
+ /* <1> Showed on UI for user, in percentage. */
+ tmpVal = padapter->recvpriv.signal_qual_data.total_val /
+ padapter->recvpriv.signal_qual_data.total_num;
+ padapter->recvpriv.signal = (u8)tmpVal;
+ }
+}
+
+static void process_rssi(struct _adapter *padapter, union recv_frame *prframe)
+{
+ u32 last_rssi, tmp_val;
+ struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib;
+
+ if (padapter->recvpriv.signal_strength_data.total_num++ >=
+ PHY_RSSI_SLID_WIN_MAX) {
+ padapter->recvpriv.signal_strength_data.total_num =
+ PHY_RSSI_SLID_WIN_MAX;
+ last_rssi = padapter->recvpriv.signal_strength_data.elements
+ [padapter->recvpriv.signal_strength_data.index];
+ padapter->recvpriv.signal_strength_data.total_val -= last_rssi;
+ }
+ padapter->recvpriv.signal_strength_data.total_val +=
+ pattrib->signal_strength;
+ padapter->recvpriv.signal_strength_data.elements[padapter->recvpriv.
+ signal_strength_data.index++] =
+ pattrib->signal_strength;
+ if (padapter->recvpriv.signal_strength_data.index >=
+ PHY_RSSI_SLID_WIN_MAX)
+ padapter->recvpriv.signal_strength_data.index = 0;
+ tmp_val = padapter->recvpriv.signal_strength_data.total_val /
+ padapter->recvpriv.signal_strength_data.total_num;
+ padapter->recvpriv.rssi = (s8)translate2dbm(padapter, (u8)tmp_val);
+}
+
+static void process_phy_info(struct _adapter *padapter,
+ union recv_frame *prframe)
+{
+ query_rx_phy_status(padapter, prframe);
+ process_rssi(padapter, prframe);
+ process_link_qual(padapter, prframe);
+}
+
+int recv_func(struct _adapter *padapter, void *pcontext)
+{
+ struct rx_pkt_attrib *pattrib;
+ union recv_frame *prframe, *orig_prframe;
+ int retval = _SUCCESS;
+ struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
+ struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
+
+ prframe = (union recv_frame *)pcontext;
+ orig_prframe = prframe;
+ pattrib = &prframe->u.hdr.attrib;
+ if ((check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)) {
+ if (pattrib->crc_err == 1)
+ padapter->mppriv.rx_crcerrpktcount++;
+ else
+ padapter->mppriv.rx_pktcount++;
+ if (check_fwstate(pmlmepriv, WIFI_MP_LPBK_STATE) == false) {
+ /* free this recv_frame */
+ r8712_free_recvframe(orig_prframe, pfree_recv_queue);
+ goto _exit_recv_func;
+ }
+ }
+ /* check the frame crtl field and decache */
+ retval = r8712_validate_recv_frame(padapter, prframe);
+ if (retval != _SUCCESS) {
+ /* free this recv_frame */
+ r8712_free_recvframe(orig_prframe, pfree_recv_queue);
+ goto _exit_recv_func;
+ }
+ process_phy_info(padapter, prframe);
+ prframe = r8712_decryptor(padapter, prframe);
+ if (prframe == NULL) {
+ retval = _FAIL;
+ goto _exit_recv_func;
+ }
+ prframe = r8712_recvframe_chk_defrag(padapter, prframe);
+ if (prframe == NULL)
+ goto _exit_recv_func;
+ prframe = r8712_portctrl(padapter, prframe);
+ if (prframe == NULL) {
+ retval = _FAIL;
+ goto _exit_recv_func;
+ }
+ retval = r8712_process_recv_indicatepkts(padapter, prframe);
+ if (retval != _SUCCESS) {
+ r8712_free_recvframe(orig_prframe, pfree_recv_queue);
+ goto _exit_recv_func;
+ }
+_exit_recv_func:
+ return retval;
+}
+
+static int recvbuf2recvframe(struct _adapter *padapter, struct sk_buff *pskb)
+{
+ u8 *pbuf, shift_sz = 0;
+ u8 frag, mf;
+ uint pkt_len;
+ u32 transfer_len;
+ struct recv_stat *prxstat;
+ u16 pkt_cnt, drvinfo_sz, pkt_offset, tmp_len, alloc_sz;
+ struct __queue *pfree_recv_queue;
+ _pkt *pkt_copy = NULL;
+ union recv_frame *precvframe = NULL;
+ struct recv_priv *precvpriv = &padapter->recvpriv;
+
+ pfree_recv_queue = &(precvpriv->free_recv_queue);
+ pbuf = pskb->data;
+ prxstat = (struct recv_stat *)pbuf;
+ pkt_cnt = (le32_to_cpu(prxstat->rxdw2)>>16)&0xff;
+ pkt_len = le32_to_cpu(prxstat->rxdw0)&0x00003fff;
+ transfer_len = pskb->len;
+ /* Test throughput with Netgear 3700 (No security) with Chariot 3T3R
+ * pairs. The packet count will be a big number so that the containing
+ * packet will effect the Rx reordering. */
+ if (transfer_len < pkt_len) {
+ /* In this case, it means the MAX_RECVBUF_SZ is too small to
+ * get the data from 8712u. */
+ return _FAIL;
+ }
+ do {
+ prxstat = (struct recv_stat *)pbuf;
+ pkt_len = le32_to_cpu(prxstat->rxdw0)&0x00003fff;
+ /* more fragment bit */
+ mf = (le32_to_cpu(prxstat->rxdw1) >> 27) & 0x1;
+ /* ragmentation number */
+ frag = (le32_to_cpu(prxstat->rxdw2) >> 12) & 0xf;
+ /* uint 2^3 = 8 bytes */
+ drvinfo_sz = (le32_to_cpu(prxstat->rxdw0) & 0x000f0000) >> 16;
+ drvinfo_sz = drvinfo_sz<<3;
+ if (pkt_len <= 0)
+ goto _exit_recvbuf2recvframe;
+ /* Qos data, wireless lan header length is 26 */
+ if ((le32_to_cpu(prxstat->rxdw0) >> 23) & 0x01)
+ shift_sz = 2;
+ precvframe = r8712_alloc_recvframe(pfree_recv_queue);
+ if (precvframe == NULL)
+ goto _exit_recvbuf2recvframe;
+ _init_listhead(&precvframe->u.hdr.list);
+ precvframe->u.hdr.precvbuf = NULL; /*can't access the precvbuf*/
+ precvframe->u.hdr.len = 0;
+ tmp_len = pkt_len + drvinfo_sz + RXDESC_SIZE;
+ pkt_offset = (u16)_RND128(tmp_len);
+ /* for first fragment packet, driver need allocate 1536 +
+ * drvinfo_sz + RXDESC_SIZE to defrag packet. */
+ if ((mf == 1) && (frag == 0))
+ alloc_sz = 1658;
+ else
+ alloc_sz = tmp_len;
+ /* 2 is for IP header 4 bytes alignment in QoS packet case.
+ * 4 is for skb->data 4 bytes alignment. */
+ alloc_sz += 6;
+ pkt_copy = netdev_alloc_skb(padapter->pnetdev, alloc_sz);
+ if (pkt_copy) {
+ pkt_copy->dev = padapter->pnetdev;
+ precvframe->u.hdr.pkt = pkt_copy;
+ skb_reserve(pkt_copy, 4 - ((addr_t)(pkt_copy->data)
+ % 4));
+ skb_reserve(pkt_copy, shift_sz);
+ memcpy(pkt_copy->data, pbuf, tmp_len);
+ precvframe->u.hdr.rx_head = precvframe->u.hdr.rx_data =
+ precvframe->u.hdr.rx_tail = pkt_copy->data;
+ precvframe->u.hdr.rx_end = pkt_copy->data + alloc_sz;
+ } else {
+ precvframe->u.hdr.pkt = skb_clone(pskb, GFP_ATOMIC);
+ precvframe->u.hdr.rx_head = pbuf;
+ precvframe->u.hdr.rx_data = pbuf;
+ precvframe->u.hdr.rx_tail = pbuf;
+ precvframe->u.hdr.rx_end = pbuf + alloc_sz;
+ }
+ recvframe_put(precvframe, tmp_len);
+ recvframe_pull(precvframe, drvinfo_sz + RXDESC_SIZE);
+ /* because the endian issue, driver avoid reference to the
+ * rxstat after calling update_recvframe_attrib_from_recvstat();
+ */
+ update_recvframe_attrib_from_recvstat(&precvframe->u.hdr.attrib,
+ prxstat);
+ r8712_recv_entry(precvframe);
+ transfer_len -= pkt_offset;
+ pbuf += pkt_offset;
+ pkt_cnt--;
+ precvframe = NULL;
+ pkt_copy = NULL;
+ } while ((transfer_len > 0) && pkt_cnt > 0);
+_exit_recvbuf2recvframe:
+ return _SUCCESS;
+}
+
+static void recv_tasklet(void *priv)
+{
+ struct sk_buff *pskb;
+ struct _adapter *padapter = (struct _adapter *)priv;
+ struct recv_priv *precvpriv = &padapter->recvpriv;
+
+ while (NULL != (pskb = skb_dequeue(&precvpriv->rx_skb_queue))) {
+ recvbuf2recvframe(padapter, pskb);
+ skb_reset_tail_pointer(pskb);
+ pskb->len = 0;
+ skb_queue_tail(&precvpriv->free_recv_skb_queue, pskb);
+ }
+}
projects / mv-sheeva.git / blobdiff