--- /dev/null
+/******************************************************************************
+ *
+ * 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 _RTW_RECV_C_
+
+#include <osdep_service.h>
+#include <drv_types.h>
+#include <recv_osdep.h>
+#include <mlme_osdep.h>
+#include <wifi.h>
+#include <linux/vmalloc.h>
+
+#define ETHERNET_HEADER_SIZE 14 /* Ethernet Header Length */
+#define LLC_HEADER_SIZE 6 /* LLC Header Length */
+
+static u8 SNAP_ETH_TYPE_IPX[2] = {0x81, 0x37};
+static u8 SNAP_ETH_TYPE_APPLETALK_AARP[2] = {0x80, 0xf3};
+
+/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
+static u8 rtw_bridge_tunnel_header[] = {
+ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8
+};
+
+static u8 rtw_rfc1042_header[] = {
+ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00
+};
+
+void rtw_signal_stat_timer_hdl(unsigned long data);
+
+void _rtw_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv)
+{
+
+ memset((u8 *)psta_recvpriv, 0, sizeof(struct sta_recv_priv));
+
+ spin_lock_init(&psta_recvpriv->lock);
+
+ _rtw_init_queue(&psta_recvpriv->defrag_q);
+
+}
+
+int _rtw_init_recv_priv(struct recv_priv *precvpriv, struct adapter *padapter)
+{
+ int i;
+
+ struct recv_frame *precvframe;
+
+ int res = _SUCCESS;
+
+ _rtw_init_queue(&precvpriv->free_recv_queue);
+ _rtw_init_queue(&precvpriv->recv_pending_queue);
+ _rtw_init_queue(&precvpriv->uc_swdec_pending_queue);
+
+ precvpriv->adapter = padapter;
+
+ precvpriv->free_recvframe_cnt = NR_RECVFRAME;
+
+ precvpriv->pallocated_frame_buf = vzalloc(NR_RECVFRAME * sizeof(struct recv_frame) + RXFRAME_ALIGN_SZ);
+
+ if (precvpriv->pallocated_frame_buf == NULL) {
+ res = _FAIL;
+ goto exit;
+ }
+
+ precvpriv->precv_frame_buf = (u8 *)N_BYTE_ALIGMENT((size_t)(precvpriv->pallocated_frame_buf), RXFRAME_ALIGN_SZ);
+
+ precvframe = (struct recv_frame *)precvpriv->precv_frame_buf;
+
+ for (i = 0; i < NR_RECVFRAME; i++) {
+ INIT_LIST_HEAD(&(precvframe->list));
+
+ list_add_tail(&(precvframe->list),
+ &(precvpriv->free_recv_queue.queue));
+
+ res = rtw_os_recv_resource_alloc(padapter, precvframe);
+
+ precvframe->len = 0;
+
+ precvframe->adapter = padapter;
+ precvframe++;
+ }
+ precvpriv->rx_pending_cnt = 1;
+
+ res = rtw_hal_init_recv_priv(padapter);
+
+ setup_timer(&precvpriv->signal_stat_timer,
+ rtw_signal_stat_timer_hdl,
+ (unsigned long)padapter);
+
+ precvpriv->signal_stat_sampling_interval = 1000; /* ms */
+
+ rtw_set_signal_stat_timer(precvpriv);
+exit:
+
+
+ return res;
+}
+
+void _rtw_free_recv_priv(struct recv_priv *precvpriv)
+{
+ struct adapter *padapter = precvpriv->adapter;
+
+
+ rtw_free_uc_swdec_pending_queue(padapter);
+
+ if (precvpriv->pallocated_frame_buf) {
+ vfree(precvpriv->pallocated_frame_buf);
+ }
+
+ rtw_hal_free_recv_priv(padapter);
+
+}
+
+struct recv_frame *_rtw_alloc_recvframe(struct __queue *pfree_recv_queue)
+{
+ struct recv_frame *hdr;
+ struct list_head *plist, *phead;
+ struct adapter *padapter;
+ struct recv_priv *precvpriv;
+
+ if (list_empty(&pfree_recv_queue->queue)) {
+ hdr = NULL;
+ } else {
+ phead = get_list_head(pfree_recv_queue);
+
+ plist = phead->next;
+
+ hdr = container_of(plist, struct recv_frame, list);
+
+ list_del_init(&hdr->list);
+ padapter = hdr->adapter;
+ if (padapter != NULL) {
+ precvpriv = &padapter->recvpriv;
+ if (pfree_recv_queue == &precvpriv->free_recv_queue)
+ precvpriv->free_recvframe_cnt--;
+ }
+ }
+
+
+ return (struct recv_frame *)hdr;
+}
+
+struct recv_frame *rtw_alloc_recvframe(struct __queue *pfree_recv_queue)
+{
+ struct recv_frame *precvframe;
+
+ spin_lock_bh(&pfree_recv_queue->lock);
+
+ precvframe = _rtw_alloc_recvframe(pfree_recv_queue);
+
+ spin_unlock_bh(&pfree_recv_queue->lock);
+
+ return precvframe;
+}
+
+void rtw_init_recvframe(struct recv_frame *precvframe, struct recv_priv *precvpriv)
+{
+ /* Perry: This can be removed */
+ INIT_LIST_HEAD(&precvframe->list);
+
+ precvframe->len = 0;
+}
+
+int rtw_free_recvframe(struct recv_frame *precvframe,
+ struct __queue *pfree_recv_queue)
+{
+ struct adapter *padapter;
+ struct recv_priv *precvpriv;
+
+ if (!precvframe)
+ return _FAIL;
+ padapter = precvframe->adapter;
+ precvpriv = &padapter->recvpriv;
+ if (precvframe->pkt) {
+ dev_kfree_skb_any(precvframe->pkt);/* free skb by driver */
+ precvframe->pkt = NULL;
+ }
+
+ spin_lock_bh(&pfree_recv_queue->lock);
+
+ list_del_init(&(precvframe->list));
+
+ precvframe->len = 0;
+
+ list_add_tail(&(precvframe->list), get_list_head(pfree_recv_queue));
+
+ if (padapter != NULL) {
+ if (pfree_recv_queue == &precvpriv->free_recv_queue)
+ precvpriv->free_recvframe_cnt++;
+ }
+
+ spin_unlock_bh(&pfree_recv_queue->lock);
+
+
+ return _SUCCESS;
+}
+
+int _rtw_enqueue_recvframe(struct recv_frame *precvframe, struct __queue *queue)
+{
+ struct adapter *padapter = precvframe->adapter;
+ struct recv_priv *precvpriv = &padapter->recvpriv;
+
+
+ list_del_init(&(precvframe->list));
+ list_add_tail(&(precvframe->list), get_list_head(queue));
+
+ if (padapter != NULL) {
+ if (queue == &precvpriv->free_recv_queue)
+ precvpriv->free_recvframe_cnt++;
+ }
+
+
+ return _SUCCESS;
+}
+
+int rtw_enqueue_recvframe(struct recv_frame *precvframe, struct __queue *queue)
+{
+ int ret;
+
+ spin_lock_bh(&queue->lock);
+ ret = _rtw_enqueue_recvframe(precvframe, queue);
+ spin_unlock_bh(&queue->lock);
+
+ return ret;
+}
+
+/*
+caller : defrag ; recvframe_chk_defrag in recv_thread (passive)
+pframequeue: defrag_queue : will be accessed in recv_thread (passive)
+
+using spinlock to protect
+
+*/
+
+void rtw_free_recvframe_queue(struct __queue *pframequeue, struct __queue *pfree_recv_queue)
+{
+ struct recv_frame *hdr;
+ struct list_head *plist, *phead;
+
+ spin_lock(&pframequeue->lock);
+
+ phead = get_list_head(pframequeue);
+ plist = phead->next;
+
+ while (phead != plist) {
+ hdr = container_of(plist, struct recv_frame, list);
+
+ plist = plist->next;
+
+ rtw_free_recvframe((struct recv_frame *)hdr, pfree_recv_queue);
+ }
+
+ spin_unlock(&pframequeue->lock);
+
+}
+
+u32 rtw_free_uc_swdec_pending_queue(struct adapter *adapter)
+{
+ u32 cnt = 0;
+ struct recv_frame *pending_frame;
+ while ((pending_frame = rtw_alloc_recvframe(&adapter->recvpriv.uc_swdec_pending_queue))) {
+ rtw_free_recvframe(pending_frame, &adapter->recvpriv.free_recv_queue);
+ DBG_88E("%s: dequeue uc_swdec_pending_queue\n", __func__);
+ cnt++;
+ }
+
+ return cnt;
+}
+
+static int recvframe_chkmic(struct adapter *adapter,
+ struct recv_frame *precvframe)
+{
+ int i, res = _SUCCESS;
+ u32 datalen;
+ u8 miccode[8];
+ u8 bmic_err = false, brpt_micerror = true;
+ u8 *pframe, *payload, *pframemic;
+ u8 *mickey;
+ struct sta_info *stainfo;
+ struct rx_pkt_attrib *prxattrib = &precvframe->attrib;
+ struct security_priv *psecuritypriv = &adapter->securitypriv;
+
+ struct mlme_ext_priv *pmlmeext = &adapter->mlmeextpriv;
+ struct mlme_ext_info *pmlmeinfo = &(pmlmeext->mlmext_info);
+
+ stainfo = rtw_get_stainfo(&adapter->stapriv, &prxattrib->ta[0]);
+
+ if (prxattrib->encrypt == _TKIP_) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n recvframe_chkmic:prxattrib->encrypt==_TKIP_\n"));
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n recvframe_chkmic:da=0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x\n",
+ prxattrib->ra[0], prxattrib->ra[1], prxattrib->ra[2], prxattrib->ra[3], prxattrib->ra[4], prxattrib->ra[5]));
+
+ /* calculate mic code */
+ if (stainfo != NULL) {
+ if (IS_MCAST(prxattrib->ra)) {
+ if (!psecuritypriv) {
+ res = _FAIL;
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n recvframe_chkmic:didn't install group key!!!!!!!!!!\n"));
+ DBG_88E("\n recvframe_chkmic:didn't install group key!!!!!!!!!!\n");
+ goto exit;
+ }
+ mickey = &psecuritypriv->dot118021XGrprxmickey[prxattrib->key_index].skey[0];
+
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n recvframe_chkmic: bcmc key\n"));
+ } else {
+ mickey = &stainfo->dot11tkiprxmickey.skey[0];
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n recvframe_chkmic: unicast key\n"));
+ }
+
+ /* icv_len included the mic code */
+ datalen = precvframe->len-prxattrib->hdrlen -
+ prxattrib->iv_len-prxattrib->icv_len-8;
+ pframe = precvframe->rx_data;
+ payload = pframe+prxattrib->hdrlen+prxattrib->iv_len;
+
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n prxattrib->iv_len=%d prxattrib->icv_len=%d\n", prxattrib->iv_len, prxattrib->icv_len));
+ rtw_seccalctkipmic(mickey, pframe, payload, datalen, &miccode[0],
+ (unsigned char)prxattrib->priority); /* care the length of the data */
+
+ pframemic = payload+datalen;
+
+ bmic_err = false;
+
+ for (i = 0; i < 8; i++) {
+ if (miccode[i] != *(pframemic+i)) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
+ ("recvframe_chkmic:miccode[%d](%02x)!=*(pframemic+%d)(%02x) ",
+ i, miccode[i], i, *(pframemic+i)));
+ bmic_err = true;
+ }
+ }
+
+ if (bmic_err) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
+ ("\n *(pframemic-8)-*(pframemic-1)=0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x\n",
+ *(pframemic-8), *(pframemic-7), *(pframemic-6),
+ *(pframemic-5), *(pframemic-4), *(pframemic-3),
+ *(pframemic-2), *(pframemic-1)));
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
+ ("\n *(pframemic-16)-*(pframemic-9)=0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x\n",
+ *(pframemic-16), *(pframemic-15), *(pframemic-14),
+ *(pframemic-13), *(pframemic-12), *(pframemic-11),
+ *(pframemic-10), *(pframemic-9)));
+ {
+ uint i;
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
+ ("\n ======demp packet (len=%d)======\n",
+ precvframe->len));
+ for (i = 0; i < precvframe->len; i += 8) {
+ RT_TRACE(_module_rtl871x_recv_c_,
+ _drv_err_,
+ ("0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x",
+ *(precvframe->rx_data+i),
+ *(precvframe->rx_data+i+1),
+ *(precvframe->rx_data+i+2),
+ *(precvframe->rx_data+i+3),
+ *(precvframe->rx_data+i+4),
+ *(precvframe->rx_data+i+5),
+ *(precvframe->rx_data+i+6),
+ *(precvframe->rx_data+i+7)));
+ }
+ RT_TRACE(_module_rtl871x_recv_c_,
+ _drv_err_,
+ ("\n ====== demp packet end [len=%d]======\n",
+ precvframe->len));
+ RT_TRACE(_module_rtl871x_recv_c_,
+ _drv_err_,
+ ("\n hrdlen=%d,\n",
+ prxattrib->hdrlen));
+ }
+
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_,
+ ("ra=0x%.2x 0x%.2x 0x%.2x 0x%.2x 0x%.2x 0x%.2x psecuritypriv->binstallGrpkey=%d ",
+ prxattrib->ra[0], prxattrib->ra[1], prxattrib->ra[2],
+ prxattrib->ra[3], prxattrib->ra[4], prxattrib->ra[5], psecuritypriv->binstallGrpkey));
+
+ /* double check key_index for some timing issue , */
+ /* cannot compare with psecuritypriv->dot118021XGrpKeyid also cause timing issue */
+ if ((IS_MCAST(prxattrib->ra) == true) && (prxattrib->key_index != pmlmeinfo->key_index))
+ brpt_micerror = false;
+
+ if ((prxattrib->bdecrypted) && (brpt_micerror)) {
+ rtw_handle_tkip_mic_err(adapter, (u8)IS_MCAST(prxattrib->ra));
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" mic error :prxattrib->bdecrypted=%d ", prxattrib->bdecrypted));
+ DBG_88E(" mic error :prxattrib->bdecrypted=%d\n", prxattrib->bdecrypted);
+ } else {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" mic error :prxattrib->bdecrypted=%d ", prxattrib->bdecrypted));
+ DBG_88E(" mic error :prxattrib->bdecrypted=%d\n", prxattrib->bdecrypted);
+ }
+ res = _FAIL;
+ } else {
+ /* mic checked ok */
+ if ((!psecuritypriv->bcheck_grpkey) && (IS_MCAST(prxattrib->ra))) {
+ psecuritypriv->bcheck_grpkey = true;
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("psecuritypriv->bcheck_grpkey = true"));
+ }
+ }
+ } else {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chkmic: rtw_get_stainfo==NULL!!!\n"));
+ }
+
+ recvframe_pull_tail(precvframe, 8);
+ }
+
+exit:
+
+
+ return res;
+}
+
+/* decrypt and set the ivlen, icvlen of the recv_frame */
+static struct recv_frame *decryptor(struct adapter *padapter,
+ struct recv_frame *precv_frame)
+{
+ struct rx_pkt_attrib *prxattrib = &precv_frame->attrib;
+ struct security_priv *psecuritypriv = &padapter->securitypriv;
+ struct recv_frame *return_packet = precv_frame;
+ u32 res = _SUCCESS;
+
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("prxstat->decrypted=%x prxattrib->encrypt=0x%03x\n", prxattrib->bdecrypted, prxattrib->encrypt));
+
+ if (prxattrib->encrypt > 0) {
+ u8 *iv = precv_frame->rx_data+prxattrib->hdrlen;
+ prxattrib->key_index = (((iv[3])>>6)&0x3);
+
+ if (prxattrib->key_index > WEP_KEYS) {
+ DBG_88E("prxattrib->key_index(%d)>WEP_KEYS\n", prxattrib->key_index);
+
+ switch (prxattrib->encrypt) {
+ case _WEP40_:
+ case _WEP104_:
+ prxattrib->key_index = psecuritypriv->dot11PrivacyKeyIndex;
+ break;
+ case _TKIP_:
+ case _AES_:
+ default:
+ prxattrib->key_index = psecuritypriv->dot118021XGrpKeyid;
+ break;
+ }
+ }
+ }
+
+ if ((prxattrib->encrypt > 0) && ((prxattrib->bdecrypted == 0) || (psecuritypriv->sw_decrypt))) {
+ psecuritypriv->hw_decrypted = false;
+
+ switch (prxattrib->encrypt) {
+ case _WEP40_:
+ case _WEP104_:
+ rtw_wep_decrypt(padapter, (u8 *)precv_frame);
+ break;
+ case _TKIP_:
+ res = rtw_tkip_decrypt(padapter, (u8 *)precv_frame);
+ break;
+ case _AES_:
+ res = rtw_aes_decrypt(padapter, (u8 *)precv_frame);
+ break;
+ default:
+ break;
+ }
+ } else if (prxattrib->bdecrypted == 1 && prxattrib->encrypt > 0 &&
+ (psecuritypriv->busetkipkey == 1 || prxattrib->encrypt != _TKIP_))
+ psecuritypriv->hw_decrypted = true;
+
+ if (res == _FAIL) {
+ rtw_free_recvframe(return_packet, &padapter->recvpriv.free_recv_queue);
+ return_packet = NULL;
+ }
+
+
+ return return_packet;
+}
+
+/* set the security information in the recv_frame */
+static struct recv_frame *portctrl(struct adapter *adapter,
+ struct recv_frame *precv_frame)
+{
+ u8 *psta_addr, *ptr;
+ uint auth_alg;
+ struct recv_frame *pfhdr;
+ struct sta_info *psta;
+ struct sta_priv *pstapriv;
+ struct recv_frame *prtnframe;
+ u16 ether_type;
+ u16 eapol_type = 0x888e;/* for Funia BD's WPA issue */
+ struct rx_pkt_attrib *pattrib;
+ __be16 be_tmp;
+
+
+ pstapriv = &adapter->stapriv;
+
+ auth_alg = adapter->securitypriv.dot11AuthAlgrthm;
+
+ ptr = precv_frame->rx_data;
+ pfhdr = precv_frame;
+ pattrib = &pfhdr->attrib;
+ psta_addr = pattrib->ta;
+ psta = rtw_get_stainfo(pstapriv, psta_addr);
+
+ prtnframe = NULL;
+
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########portctrl:adapter->securitypriv.dot11AuthAlgrthm=%d\n", adapter->securitypriv.dot11AuthAlgrthm));
+
+ if (auth_alg == 2) {
+ /* get ether_type */
+ ptr = ptr + pfhdr->attrib.hdrlen + LLC_HEADER_SIZE;
+ memcpy(&be_tmp, ptr, 2);
+ ether_type = ntohs(be_tmp);
+
+ if ((psta != NULL) && (psta->ieee8021x_blocked)) {
+ /* blocked */
+ /* only accept EAPOL frame */
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########portctrl:psta->ieee8021x_blocked==1\n"));
+
+ if (ether_type == eapol_type) {
+ prtnframe = precv_frame;
+ } else {
+ /* free this frame */
+ rtw_free_recvframe(precv_frame, &adapter->recvpriv.free_recv_queue);
+ prtnframe = NULL;
+ }
+ } else {
+ /* allowed */
+ /* check decryption status, and decrypt the frame if needed */
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########portctrl:psta->ieee8021x_blocked==0\n"));
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
+ ("portctrl:precv_frame->hdr.attrib.privacy=%x\n",
+ precv_frame->attrib.privacy));
+
+ if (pattrib->bdecrypted == 0)
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("portctrl:prxstat->decrypted=%x\n", pattrib->bdecrypted));
+
+ prtnframe = precv_frame;
+ /* check is the EAPOL frame or not (Rekey) */
+ if (ether_type == eapol_type) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("########portctrl:ether_type==0x888e\n"));
+ /* check Rekey */
+
+ prtnframe = precv_frame;
+ } else {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("########portctrl:ether_type=0x%04x\n", ether_type));
+ }
+ }
+ } else {
+ prtnframe = precv_frame;
+ }
+
+
+ return prtnframe;
+}
+
+static int recv_decache(struct recv_frame *precv_frame, u8 bretry,
+ struct stainfo_rxcache *prxcache)
+{
+ int tid = precv_frame->attrib.priority;
+
+ u16 seq_ctrl = ((precv_frame->attrib.seq_num&0xffff) << 4) |
+ (precv_frame->attrib.frag_num & 0xf);
+
+
+ if (tid > 15) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("recv_decache, (tid>15)! seq_ctrl=0x%x, tid=0x%x\n", seq_ctrl, tid));
+
+ return _FAIL;
+ }
+
+ if (1) {/* if (bretry) */
+ if (seq_ctrl == prxcache->tid_rxseq[tid]) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("recv_decache, seq_ctrl=0x%x, tid=0x%x, tid_rxseq=0x%x\n", seq_ctrl, tid, prxcache->tid_rxseq[tid]));
+
+ return _FAIL;
+ }
+ }
+
+ prxcache->tid_rxseq[tid] = seq_ctrl;
+
+
+ return _SUCCESS;
+}
+
+static void process_pwrbit_data(struct adapter *padapter,
+ struct recv_frame *precv_frame)
+{
+#ifdef CONFIG_88EU_AP_MODE
+ unsigned char pwrbit;
+ u8 *ptr = precv_frame->rx_data;
+ struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
+ struct sta_priv *pstapriv = &padapter->stapriv;
+ struct sta_info *psta = NULL;
+
+ psta = rtw_get_stainfo(pstapriv, pattrib->src);
+
+ pwrbit = GetPwrMgt(ptr);
+
+ if (psta) {
+ if (pwrbit) {
+ if (!(psta->state & WIFI_SLEEP_STATE))
+ stop_sta_xmit(padapter, psta);
+ } else {
+ if (psta->state & WIFI_SLEEP_STATE)
+ wakeup_sta_to_xmit(padapter, psta);
+ }
+ }
+
+#endif
+}
+
+static void process_wmmps_data(struct adapter *padapter,
+ struct recv_frame *precv_frame)
+{
+#ifdef CONFIG_88EU_AP_MODE
+ struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
+ struct sta_priv *pstapriv = &padapter->stapriv;
+ struct sta_info *psta = NULL;
+
+ psta = rtw_get_stainfo(pstapriv, pattrib->src);
+
+ if (!psta)
+ return;
+
+ if (!psta->qos_option)
+ return;
+
+ if (!(psta->qos_info&0xf))
+ return;
+
+ if (psta->state&WIFI_SLEEP_STATE) {
+ u8 wmmps_ac = 0;
+
+ switch (pattrib->priority) {
+ case 1:
+ case 2:
+ wmmps_ac = psta->uapsd_bk&BIT(1);
+ break;
+ case 4:
+ case 5:
+ wmmps_ac = psta->uapsd_vi&BIT(1);
+ break;
+ case 6:
+ case 7:
+ wmmps_ac = psta->uapsd_vo&BIT(1);
+ break;
+ case 0:
+ case 3:
+ default:
+ wmmps_ac = psta->uapsd_be&BIT(1);
+ break;
+ }
+
+ if (wmmps_ac) {
+ if (psta->sleepq_ac_len > 0) {
+ /* process received triggered frame */
+ xmit_delivery_enabled_frames(padapter, psta);
+ } else {
+ /* issue one qos null frame with More data bit = 0 and the EOSP bit set (= 1) */
+ issue_qos_nulldata(padapter, psta->hwaddr, (u16)pattrib->priority, 0, 0);
+ }
+ }
+ }
+
+#endif
+}
+
+static void count_rx_stats(struct adapter *padapter,
+ struct recv_frame *prframe,
+ struct sta_info *sta)
+{
+ int sz;
+ struct sta_info *psta = NULL;
+ struct stainfo_stats *pstats = NULL;
+ struct rx_pkt_attrib *pattrib = &prframe->attrib;
+ struct recv_priv *precvpriv = &padapter->recvpriv;
+
+ sz = prframe->len;
+ precvpriv->rx_bytes += sz;
+
+ padapter->mlmepriv.LinkDetectInfo.NumRxOkInPeriod++;
+
+ if ((!MacAddr_isBcst(pattrib->dst)) && (!IS_MCAST(pattrib->dst)))
+ padapter->mlmepriv.LinkDetectInfo.NumRxUnicastOkInPeriod++;
+
+ if (sta)
+ psta = sta;
+ else
+ psta = prframe->psta;
+
+ if (psta) {
+ pstats = &psta->sta_stats;
+
+ pstats->rx_data_pkts++;
+ pstats->rx_bytes += sz;
+ }
+}
+
+int sta2sta_data_frame(
+ struct adapter *adapter,
+ struct recv_frame *precv_frame,
+ struct sta_info **psta
+);
+
+int sta2sta_data_frame(struct adapter *adapter, struct recv_frame *precv_frame,
+ struct sta_info **psta)
+{
+ u8 *ptr = precv_frame->rx_data;
+ int ret = _SUCCESS;
+ struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
+ struct sta_priv *pstapriv = &adapter->stapriv;
+ struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
+ u8 *mybssid = get_bssid(pmlmepriv);
+ u8 *myhwaddr = myid(&adapter->eeprompriv);
+ u8 *sta_addr = NULL;
+ int bmcast = IS_MCAST(pattrib->dst);
+
+
+ if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true) ||
+ (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) == true)) {
+ /* filter packets that SA is myself or multicast or broadcast */
+ if (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" SA==myself\n"));
+ ret = _FAIL;
+ goto exit;
+ }
+
+ if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast)) {
+ ret = _FAIL;
+ goto exit;
+ }
+
+ if (!memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
+ !memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
+ memcmp(pattrib->bssid, mybssid, ETH_ALEN)) {
+ ret = _FAIL;
+ goto exit;
+ }
+
+ sta_addr = pattrib->src;
+ } else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) {
+ /* For Station mode, sa and bssid should always be BSSID, and DA is my mac-address */
+ if (memcmp(pattrib->bssid, pattrib->src, ETH_ALEN)) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("bssid!=TA under STATION_MODE; drop pkt\n"));
+ ret = _FAIL;
+ goto exit;
+ }
+ sta_addr = pattrib->bssid;
+ } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
+ if (bmcast) {
+ /* For AP mode, if DA == MCAST, then BSSID should be also MCAST */
+ if (!IS_MCAST(pattrib->bssid)) {
+ ret = _FAIL;
+ goto exit;
+ }
+ } else { /* not mc-frame */
+ /* For AP mode, if DA is non-MCAST, then it must be BSSID, and bssid == BSSID */
+ if (memcmp(pattrib->bssid, pattrib->dst, ETH_ALEN)) {
+ ret = _FAIL;
+ goto exit;
+ }
+
+ sta_addr = pattrib->src;
+ }
+ } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) {
+ memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN);
+ memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN);
+ memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN);
+ memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
+ memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
+
+ sta_addr = mybssid;
+ } else {
+ ret = _FAIL;
+ }
+
+ if (bmcast)
+ *psta = rtw_get_bcmc_stainfo(adapter);
+ else
+ *psta = rtw_get_stainfo(pstapriv, sta_addr); /* get ap_info */
+
+ if (*psta == NULL) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("can't get psta under sta2sta_data_frame ; drop pkt\n"));
+ ret = _FAIL;
+ goto exit;
+ }
+
+exit:
+ return ret;
+}
+
+static int ap2sta_data_frame(
+ struct adapter *adapter,
+ struct recv_frame *precv_frame,
+ struct sta_info **psta)
+{
+ u8 *ptr = precv_frame->rx_data;
+ struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
+ int ret = _SUCCESS;
+ struct sta_priv *pstapriv = &adapter->stapriv;
+ struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
+ u8 *mybssid = get_bssid(pmlmepriv);
+ u8 *myhwaddr = myid(&adapter->eeprompriv);
+ int bmcast = IS_MCAST(pattrib->dst);
+
+
+ if ((check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true) &&
+ (check_fwstate(pmlmepriv, _FW_LINKED) == true ||
+ check_fwstate(pmlmepriv, _FW_UNDER_LINKING))) {
+ /* filter packets that SA is myself or multicast or broadcast */
+ if (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" SA==myself\n"));
+ ret = _FAIL;
+ goto exit;
+ }
+
+ /* da should be for me */
+ if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast)) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
+ (" ap2sta_data_frame: compare DA fail; DA=%pM\n", (pattrib->dst)));
+ ret = _FAIL;
+ goto exit;
+ }
+
+ /* check BSSID */
+ if (!memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
+ !memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) ||
+ (memcmp(pattrib->bssid, mybssid, ETH_ALEN))) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
+ (" ap2sta_data_frame: compare BSSID fail ; BSSID=%pM\n", (pattrib->bssid)));
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("mybssid=%pM\n", (mybssid)));
+
+ if (!bmcast) {
+ DBG_88E("issue_deauth to the nonassociated ap=%pM for the reason(7)\n", (pattrib->bssid));
+ issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
+ }
+
+ ret = _FAIL;
+ goto exit;
+ }
+
+ if (bmcast)
+ *psta = rtw_get_bcmc_stainfo(adapter);
+ else
+ *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get ap_info */
+
+ if (*psta == NULL) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("ap2sta: can't get psta under STATION_MODE ; drop pkt\n"));
+ ret = _FAIL;
+ goto exit;
+ }
+
+ /* if ((GetFrameSubType(ptr) & WIFI_QOS_DATA_TYPE) == WIFI_QOS_DATA_TYPE) { */
+ /* */
+
+ if (GetFrameSubType(ptr) & BIT(6)) {
+ /* No data, will not indicate to upper layer, temporily count it here */
+ count_rx_stats(adapter, precv_frame, *psta);
+ ret = RTW_RX_HANDLED;
+ goto exit;
+ }
+ } else if ((check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) &&
+ (check_fwstate(pmlmepriv, _FW_LINKED) == true)) {
+ memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN);
+ memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN);
+ memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN);
+ memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
+ memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
+
+ /* */
+ memcpy(pattrib->bssid, mybssid, ETH_ALEN);
+
+ *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get sta_info */
+ if (*psta == NULL) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("can't get psta under MP_MODE ; drop pkt\n"));
+ ret = _FAIL;
+ goto exit;
+ }
+ } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
+ /* Special case */
+ ret = RTW_RX_HANDLED;
+ goto exit;
+ } else {
+ if (!memcmp(myhwaddr, pattrib->dst, ETH_ALEN) && (!bmcast)) {
+ *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get sta_info */
+ if (*psta == NULL) {
+ DBG_88E("issue_deauth to the ap =%pM for the reason(7)\n", (pattrib->bssid));
+
+ issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
+ }
+ }
+
+ ret = _FAIL;
+ }
+
+exit:
+
+
+ return ret;
+}
+
+static int sta2ap_data_frame(struct adapter *adapter,
+ struct recv_frame *precv_frame,
+ struct sta_info **psta)
+{
+ struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
+ struct sta_priv *pstapriv = &adapter->stapriv;
+ struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
+ u8 *ptr = precv_frame->rx_data;
+ unsigned char *mybssid = get_bssid(pmlmepriv);
+ int ret = _SUCCESS;
+
+
+ if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
+ /* For AP mode, RA = BSSID, TX = STA(SRC_ADDR), A3 = DST_ADDR */
+ if (memcmp(pattrib->bssid, mybssid, ETH_ALEN)) {
+ ret = _FAIL;
+ goto exit;
+ }
+
+ *psta = rtw_get_stainfo(pstapriv, pattrib->src);
+ if (*psta == NULL) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("can't get psta under AP_MODE; drop pkt\n"));
+ DBG_88E("issue_deauth to sta=%pM for the reason(7)\n", (pattrib->src));
+
+ issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
+
+ ret = RTW_RX_HANDLED;
+ goto exit;
+ }
+
+ process_pwrbit_data(adapter, precv_frame);
+
+ if ((GetFrameSubType(ptr) & WIFI_QOS_DATA_TYPE) == WIFI_QOS_DATA_TYPE) {
+ process_wmmps_data(adapter, precv_frame);
+ }
+
+ if (GetFrameSubType(ptr) & BIT(6)) {
+ /* No data, will not indicate to upper layer, temporily count it here */
+ count_rx_stats(adapter, precv_frame, *psta);
+ ret = RTW_RX_HANDLED;
+ goto exit;
+ }
+ } else {
+ u8 *myhwaddr = myid(&adapter->eeprompriv);
+ if (memcmp(pattrib->ra, myhwaddr, ETH_ALEN)) {
+ ret = RTW_RX_HANDLED;
+ goto exit;
+ }
+ DBG_88E("issue_deauth to sta=%pM for the reason(7)\n", (pattrib->src));
+ issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
+ ret = RTW_RX_HANDLED;
+ goto exit;
+ }
+
+exit:
+
+
+ return ret;
+}
+
+static int validate_recv_ctrl_frame(struct adapter *padapter,
+ struct recv_frame *precv_frame)
+{
+#ifdef CONFIG_88EU_AP_MODE
+ struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
+ struct sta_priv *pstapriv = &padapter->stapriv;
+ u8 *pframe = precv_frame->rx_data;
+
+ if (GetFrameType(pframe) != WIFI_CTRL_TYPE)
+ return _FAIL;
+
+ /* receive the frames that ra(a1) is my address */
+ if (memcmp(GetAddr1Ptr(pframe), myid(&padapter->eeprompriv), ETH_ALEN))
+ return _FAIL;
+
+ /* only handle ps-poll */
+ if (GetFrameSubType(pframe) == WIFI_PSPOLL) {
+ u16 aid;
+ u8 wmmps_ac = 0;
+ struct sta_info *psta = NULL;
+
+ aid = GetAid(pframe);
+ psta = rtw_get_stainfo(pstapriv, GetAddr2Ptr(pframe));
+
+ if ((psta == NULL) || (psta->aid != aid))
+ return _FAIL;
+
+ /* for rx pkt statistics */
+ psta->sta_stats.rx_ctrl_pkts++;
+
+ switch (pattrib->priority) {
+ case 1:
+ case 2:
+ wmmps_ac = psta->uapsd_bk&BIT(0);
+ break;
+ case 4:
+ case 5:
+ wmmps_ac = psta->uapsd_vi&BIT(0);
+ break;
+ case 6:
+ case 7:
+ wmmps_ac = psta->uapsd_vo&BIT(0);
+ break;
+ case 0:
+ case 3:
+ default:
+ wmmps_ac = psta->uapsd_be&BIT(0);
+ break;
+ }
+
+ if (wmmps_ac)
+ return _FAIL;
+
+ if (psta->state & WIFI_STA_ALIVE_CHK_STATE) {
+ DBG_88E("%s alive check-rx ps-poll\n", __func__);
+ psta->expire_to = pstapriv->expire_to;
+ psta->state ^= WIFI_STA_ALIVE_CHK_STATE;
+ }
+
+ if ((psta->state&WIFI_SLEEP_STATE) && (pstapriv->sta_dz_bitmap&BIT(psta->aid))) {
+ struct list_head *xmitframe_plist, *xmitframe_phead;
+ struct xmit_frame *pxmitframe = NULL;
+
+ spin_lock_bh(&psta->sleep_q.lock);
+
+ xmitframe_phead = get_list_head(&psta->sleep_q);
+ xmitframe_plist = xmitframe_phead->next;
+
+ if (xmitframe_phead != xmitframe_plist) {
+ pxmitframe = container_of(xmitframe_plist, struct xmit_frame, list);
+
+ xmitframe_plist = xmitframe_plist->next;
+
+ list_del_init(&pxmitframe->list);
+
+ psta->sleepq_len--;
+
+ if (psta->sleepq_len > 0)
+ pxmitframe->attrib.mdata = 1;
+ else
+ pxmitframe->attrib.mdata = 0;
+
+ pxmitframe->attrib.triggered = 1;
+
+ spin_unlock_bh(&psta->sleep_q.lock);
+ if (rtw_hal_xmit(padapter, pxmitframe) == true)
+ rtw_os_xmit_complete(padapter, pxmitframe);
+ spin_lock_bh(&psta->sleep_q.lock);
+
+ if (psta->sleepq_len == 0) {
+ pstapriv->tim_bitmap &= ~BIT(psta->aid);
+
+ /* update BCN for TIM IE */
+ /* update_BCNTIM(padapter); */
+ update_beacon(padapter, _TIM_IE_, NULL, false);
+ }
+ } else {
+ if (pstapriv->tim_bitmap&BIT(psta->aid)) {
+ if (psta->sleepq_len == 0) {
+ DBG_88E("no buffered packets to xmit\n");
+
+ /* issue nulldata with More data bit = 0 to indicate we have no buffered packets */
+ issue_nulldata(padapter, psta->hwaddr, 0, 0, 0);
+ } else {
+ DBG_88E("error!psta->sleepq_len=%d\n", psta->sleepq_len);
+ psta->sleepq_len = 0;
+ }
+
+ pstapriv->tim_bitmap &= ~BIT(psta->aid);
+
+ /* update BCN for TIM IE */
+ /* update_BCNTIM(padapter); */
+ update_beacon(padapter, _TIM_IE_, NULL, false);
+ }
+ }
+
+ spin_unlock_bh(&psta->sleep_q.lock);
+ }
+ }
+
+#endif
+
+ return _FAIL;
+}
+
+struct recv_frame *recvframe_chk_defrag(struct adapter *padapter,
+ struct recv_frame *precv_frame);
+
+static int validate_recv_mgnt_frame(struct adapter *padapter,
+ struct recv_frame *precv_frame)
+{
+ struct sta_info *psta;
+
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("+validate_recv_mgnt_frame\n"));
+
+ precv_frame = recvframe_chk_defrag(padapter, precv_frame);
+ if (precv_frame == NULL) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("%s: fragment packet\n", __func__));
+ return _SUCCESS;
+ }
+
+ /* for rx pkt statistics */
+ psta = rtw_get_stainfo(&padapter->stapriv,
+ GetAddr2Ptr(precv_frame->rx_data));
+ if (psta) {
+ psta->sta_stats.rx_mgnt_pkts++;
+ if (GetFrameSubType(precv_frame->rx_data) == WIFI_BEACON) {
+ psta->sta_stats.rx_beacon_pkts++;
+ } else if (GetFrameSubType(precv_frame->rx_data) == WIFI_PROBEREQ) {
+ psta->sta_stats.rx_probereq_pkts++;
+ } else if (GetFrameSubType(precv_frame->rx_data) == WIFI_PROBERSP) {
+ if (!memcmp(padapter->eeprompriv.mac_addr,
+ GetAddr1Ptr(precv_frame->rx_data), ETH_ALEN))
+ psta->sta_stats.rx_probersp_pkts++;
+ else if (is_broadcast_mac_addr(GetAddr1Ptr(precv_frame->rx_data)) ||
+ is_multicast_mac_addr(GetAddr1Ptr(precv_frame->rx_data)))
+ psta->sta_stats.rx_probersp_bm_pkts++;
+ else
+ psta->sta_stats.rx_probersp_uo_pkts++;
+ }
+ }
+
+ mgt_dispatcher(padapter, precv_frame);
+
+ return _SUCCESS;
+}
+
+static int validate_recv_data_frame(struct adapter *adapter,
+ struct recv_frame *precv_frame)
+{
+ u8 bretry;
+ u8 *psa, *pda, *pbssid;
+ struct sta_info *psta = NULL;
+ u8 *ptr = precv_frame->rx_data;
+ struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
+ struct security_priv *psecuritypriv = &adapter->securitypriv;
+ int ret = _SUCCESS;
+
+
+ bretry = GetRetry(ptr);
+ pda = get_da(ptr);
+ psa = get_sa(ptr);
+ pbssid = get_hdr_bssid(ptr);
+
+ if (pbssid == NULL) {
+ ret = _FAIL;
+ goto exit;
+ }
+
+ memcpy(pattrib->dst, pda, ETH_ALEN);
+ memcpy(pattrib->src, psa, ETH_ALEN);
+
+ memcpy(pattrib->bssid, pbssid, ETH_ALEN);
+
+ switch (pattrib->to_fr_ds) {
+ case 0:
+ memcpy(pattrib->ra, pda, ETH_ALEN);
+ memcpy(pattrib->ta, psa, ETH_ALEN);
+ ret = sta2sta_data_frame(adapter, precv_frame, &psta);
+ break;
+ case 1:
+ memcpy(pattrib->ra, pda, ETH_ALEN);
+ memcpy(pattrib->ta, pbssid, ETH_ALEN);
+ ret = ap2sta_data_frame(adapter, precv_frame, &psta);
+ break;
+ case 2:
+ memcpy(pattrib->ra, pbssid, ETH_ALEN);
+ memcpy(pattrib->ta, psa, ETH_ALEN);
+ ret = sta2ap_data_frame(adapter, precv_frame, &psta);
+ break;
+ case 3:
+ memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN);
+ memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN);
+ ret = _FAIL;
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" case 3\n"));
+ break;
+ default:
+ ret = _FAIL;
+ break;
+ }
+
+ if (ret == _FAIL) {
+ goto exit;
+ } else if (ret == RTW_RX_HANDLED) {
+ goto exit;
+ }
+
+ if (psta == NULL) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, (" after to_fr_ds_chk; psta==NULL\n"));
+ ret = _FAIL;
+ goto exit;
+ }
+
+ /* psta->rssi = prxcmd->rssi; */
+ /* psta->signal_quality = prxcmd->sq; */
+ precv_frame->psta = psta;
+
+ pattrib->amsdu = 0;
+ pattrib->ack_policy = 0;
+ /* parsing QC field */
+ if (pattrib->qos == 1) {
+ pattrib->priority = GetPriority((ptr + 24));
+ pattrib->ack_policy = GetAckpolicy((ptr + 24));
+ pattrib->amsdu = GetAMsdu((ptr + 24));
+ pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 32 : 26;
+
+ if (pattrib->priority != 0 && pattrib->priority != 3)
+ adapter->recvpriv.bIsAnyNonBEPkts = true;
+ } else {
+ pattrib->priority = 0;
+ pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 30 : 24;
+ }
+
+ if (pattrib->order)/* HT-CTRL 11n */
+ pattrib->hdrlen += 4;
+
+ precv_frame->preorder_ctrl = &psta->recvreorder_ctrl[pattrib->priority];
+
+ /* decache, drop duplicate recv packets */
+ if (recv_decache(precv_frame, bretry, &psta->sta_recvpriv.rxcache) == _FAIL) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("decache : drop pkt\n"));
+ ret = _FAIL;
+ goto exit;
+ }
+
+ if (pattrib->privacy) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("validate_recv_data_frame:pattrib->privacy=%x\n", pattrib->privacy));
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n ^^^^^^^^^^^IS_MCAST(pattrib->ra(0x%02x))=%d^^^^^^^^^^^^^^^6\n", pattrib->ra[0], IS_MCAST(pattrib->ra)));
+
+ GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, IS_MCAST(pattrib->ra));
+
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n pattrib->encrypt=%d\n", pattrib->encrypt));
+
+ SET_ICE_IV_LEN(pattrib->iv_len, pattrib->icv_len, pattrib->encrypt);
+ } else {
+ pattrib->encrypt = 0;
+ pattrib->iv_len = 0;
+ pattrib->icv_len = 0;
+ }
+
+exit:
+
+
+ return ret;
+}
+
+static int validate_recv_frame(struct adapter *adapter,
+ struct recv_frame *precv_frame)
+{
+ /* shall check frame subtype, to / from ds, da, bssid */
+
+ /* then call check if rx seq/frag. duplicated. */
+
+ u8 type;
+ u8 subtype;
+ int retval = _SUCCESS;
+ u8 bDumpRxPkt;
+ struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
+ u8 *ptr = precv_frame->rx_data;
+ u8 ver = (unsigned char)(*ptr)&0x3;
+ struct mlme_ext_priv *pmlmeext = &adapter->mlmeextpriv;
+
+
+ if (pmlmeext->sitesurvey_res.state == SCAN_PROCESS) {
+ int ch_set_idx = rtw_ch_set_search_ch(pmlmeext->channel_set, rtw_get_oper_ch(adapter));
+ if (ch_set_idx >= 0)
+ pmlmeext->channel_set[ch_set_idx].rx_count++;
+ }
+
+ /* add version chk */
+ if (ver != 0) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_data_frame fail! (ver!=0)\n"));
+ retval = _FAIL;
+ goto exit;
+ }
+
+ type = GetFrameType(ptr);
+ subtype = GetFrameSubType(ptr); /* bit(7)~bit(2) */
+
+ pattrib->to_fr_ds = get_tofr_ds(ptr);
+
+ pattrib->frag_num = GetFragNum(ptr);
+ pattrib->seq_num = GetSequence(ptr);
+
+ pattrib->pw_save = GetPwrMgt(ptr);
+ pattrib->mfrag = GetMFrag(ptr);
+ pattrib->mdata = GetMData(ptr);
+ pattrib->privacy = GetPrivacy(ptr);
+ pattrib->order = GetOrder(ptr);
+
+ /* Dump rx packets */
+ rtw_hal_get_def_var(adapter, HAL_DEF_DBG_DUMP_RXPKT, &(bDumpRxPkt));
+ if (bDumpRxPkt == 1) {/* dump all rx packets */
+ int i;
+ DBG_88E("#############################\n");
+
+ for (i = 0; i < 64; i = i+8)
+ DBG_88E("%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:\n", *(ptr+i),
+ *(ptr+i+1), *(ptr+i+2), *(ptr+i+3), *(ptr+i+4), *(ptr+i+5), *(ptr+i+6), *(ptr+i+7));
+ DBG_88E("#############################\n");
+ } else if (bDumpRxPkt == 2) {
+ if (type == WIFI_MGT_TYPE) {
+ int i;
+ DBG_88E("#############################\n");
+
+ for (i = 0; i < 64; i = i+8)
+ DBG_88E("%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:\n", *(ptr+i),
+ *(ptr+i+1), *(ptr+i+2), *(ptr+i+3), *(ptr+i+4), *(ptr+i+5), *(ptr+i+6), *(ptr+i+7));
+ DBG_88E("#############################\n");
+ }
+ } else if (bDumpRxPkt == 3) {
+ if (type == WIFI_DATA_TYPE) {
+ int i;
+ DBG_88E("#############################\n");
+
+ for (i = 0; i < 64; i = i+8)
+ DBG_88E("%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X:\n", *(ptr+i),
+ *(ptr+i+1), *(ptr+i+2), *(ptr+i+3), *(ptr+i+4), *(ptr+i+5), *(ptr+i+6), *(ptr+i+7));
+ DBG_88E("#############################\n");
+ }
+ }
+ switch (type) {
+ case WIFI_MGT_TYPE: /* mgnt */
+ retval = validate_recv_mgnt_frame(adapter, precv_frame);
+ if (retval == _FAIL)
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_mgnt_frame fail\n"));
+ retval = _FAIL; /* only data frame return _SUCCESS */
+ break;
+ case WIFI_CTRL_TYPE: /* ctrl */
+ retval = validate_recv_ctrl_frame(adapter, precv_frame);
+ if (retval == _FAIL)
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_ctrl_frame fail\n"));
+ retval = _FAIL; /* only data frame return _SUCCESS */
+ break;
+ case WIFI_DATA_TYPE: /* data */
+ rtw_led_control(adapter, LED_CTL_RX);
+ pattrib->qos = (subtype & BIT(7)) ? 1 : 0;
+ retval = validate_recv_data_frame(adapter, precv_frame);
+ if (retval == _FAIL) {
+ struct recv_priv *precvpriv = &adapter->recvpriv;
+ precvpriv->rx_drop++;
+ }
+ break;
+ default:
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("validate_recv_data_frame fail! type= 0x%x\n", type));
+ retval = _FAIL;
+ break;
+ }
+
+exit:
+
+
+ return retval;
+}
+
+/* remove the wlanhdr and add the eth_hdr */
+
+static int wlanhdr_to_ethhdr(struct recv_frame *precvframe)
+{
+ int rmv_len;
+ u16 eth_type, len;
+ __be16 be_tmp;
+ u8 bsnaphdr;
+ u8 *psnap_type;
+ struct ieee80211_snap_hdr *psnap;
+
+ struct adapter *adapter = precvframe->adapter;
+ struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
+ u8 *ptr = precvframe->rx_data;
+ struct rx_pkt_attrib *pattrib = &precvframe->attrib;
+
+ if (pattrib->encrypt)
+ recvframe_pull_tail(precvframe, pattrib->icv_len);
+
+ psnap = (struct ieee80211_snap_hdr *)(ptr+pattrib->hdrlen + pattrib->iv_len);
+ psnap_type = ptr+pattrib->hdrlen + pattrib->iv_len+SNAP_SIZE;
+ /* convert hdr + possible LLC headers into Ethernet header */
+ if ((!memcmp(psnap, rtw_rfc1042_header, SNAP_SIZE) &&
+ (!memcmp(psnap_type, SNAP_ETH_TYPE_IPX, 2) == false) &&
+ (!memcmp(psnap_type, SNAP_ETH_TYPE_APPLETALK_AARP, 2) == false)) ||
+ !memcmp(psnap, rtw_bridge_tunnel_header, SNAP_SIZE)) {
+ /* remove RFC1042 or Bridge-Tunnel encapsulation and replace EtherType */
+ bsnaphdr = true;
+ } else {
+ /* Leave Ethernet header part of hdr and full payload */
+ bsnaphdr = false;
+ }
+
+ rmv_len = pattrib->hdrlen + pattrib->iv_len + (bsnaphdr ? SNAP_SIZE : 0);
+ len = precvframe->len - rmv_len;
+
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_,
+ ("\n===pattrib->hdrlen: %x, pattrib->iv_len:%x===\n\n", pattrib->hdrlen, pattrib->iv_len));
+
+ memcpy(&be_tmp, ptr+rmv_len, 2);
+ eth_type = ntohs(be_tmp); /* pattrib->ether_type */
+ pattrib->eth_type = eth_type;
+
+ if ((check_fwstate(pmlmepriv, WIFI_MP_STATE))) {
+ ptr += rmv_len;
+ *ptr = 0x87;
+ *(ptr+1) = 0x12;
+
+ eth_type = 0x8712;
+ /* append rx status for mp test packets */
+ ptr = recvframe_pull(precvframe, (rmv_len-sizeof(struct ethhdr)+2)-24);
+ memcpy(ptr, get_rxmem(precvframe), 24);
+ ptr += 24;
+ } else {
+ ptr = recvframe_pull(precvframe, (rmv_len-sizeof(struct ethhdr) + (bsnaphdr ? 2 : 0)));
+ }
+
+ memcpy(ptr, pattrib->dst, ETH_ALEN);
+ memcpy(ptr+ETH_ALEN, pattrib->src, ETH_ALEN);
+
+ if (!bsnaphdr) {
+ be_tmp = htons(len);
+ memcpy(ptr+12, &be_tmp, 2);
+ }
+
+ return _SUCCESS;
+}
+
+/* perform defrag */
+static struct recv_frame *recvframe_defrag(struct adapter *adapter,
+ struct __queue *defrag_q)
+{
+ struct list_head *plist, *phead;
+ u8 wlanhdr_offset;
+ u8 curfragnum;
+ struct recv_frame *pfhdr, *pnfhdr;
+ struct recv_frame *prframe, *pnextrframe;
+ struct __queue *pfree_recv_queue;
+
+
+ curfragnum = 0;
+ pfree_recv_queue = &adapter->recvpriv.free_recv_queue;
+
+ phead = get_list_head(defrag_q);
+ plist = phead->next;
+ pfhdr = container_of(plist, struct recv_frame, list);
+ prframe = (struct recv_frame *)pfhdr;
+ list_del_init(&(prframe->list));
+
+ if (curfragnum != pfhdr->attrib.frag_num) {
+ /* the first fragment number must be 0 */
+ /* free the whole queue */
+ rtw_free_recvframe(prframe, pfree_recv_queue);
+ rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
+
+ return NULL;
+ }
+
+ curfragnum++;
+
+ plist = get_list_head(defrag_q);
+
+ plist = plist->next;
+
+ while (phead != plist) {
+ pnfhdr = container_of(plist, struct recv_frame, list);
+ pnextrframe = (struct recv_frame *)pnfhdr;
+
+ /* check the fragment sequence (2nd ~n fragment frame) */
+
+ if (curfragnum != pnfhdr->attrib.frag_num) {
+ /* the fragment number must be increasing (after decache) */
+ /* release the defrag_q & prframe */
+ rtw_free_recvframe(prframe, pfree_recv_queue);
+ rtw_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;
+
+ 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 */
+ memcpy(pfhdr->rx_tail, pnfhdr->rx_data, pnfhdr->len);
+
+ recvframe_put(prframe, pnfhdr->len);
+
+ pfhdr->attrib.icv_len = pnfhdr->attrib.icv_len;
+ plist = plist->next;
+ }
+
+ /* free the defrag_q queue and return the prframe */
+ rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
+
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("Performance defrag!!!!!\n"));
+
+
+ return prframe;
+}
+
+/* check if need to defrag, if needed queue the frame to defrag_q */
+struct recv_frame *recvframe_chk_defrag(struct adapter *padapter,
+ struct recv_frame *precv_frame)
+{
+ u8 ismfrag;
+ u8 fragnum;
+ u8 *psta_addr;
+ struct recv_frame *pfhdr;
+ struct sta_info *psta;
+ struct sta_priv *pstapriv;
+ struct list_head *phead;
+ struct recv_frame *prtnframe = NULL;
+ struct __queue *pfree_recv_queue, *pdefrag_q;
+
+
+ pstapriv = &padapter->stapriv;
+
+ pfhdr = precv_frame;
+
+ 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 = rtw_get_stainfo(pstapriv, psta_addr);
+ if (psta == NULL) {
+ u8 type = GetFrameType(pfhdr->rx_data);
+ if (type != WIFI_DATA_TYPE) {
+ psta = rtw_get_bcmc_stainfo(padapter);
+ pdefrag_q = &psta->sta_recvpriv.defrag_q;
+ } else {
+ 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 (!list_empty(&pdefrag_q->queue)) {
+ /* free current defrag_q */
+ rtw_free_recvframe_queue(pdefrag_q, pfree_recv_queue);
+ }
+ }
+
+ /* Then enqueue the 0~(n-1) fragment into the defrag_q */
+
+ phead = get_list_head(pdefrag_q);
+ list_add_tail(&pfhdr->list, phead);
+
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("Enqueuq: ismfrag=%d, fragnum=%d\n", ismfrag, fragnum));
+
+ prtnframe = NULL;
+ } else {
+ /* can't find this ta's defrag_queue, so free this recv_frame */
+ rtw_free_recvframe(precv_frame, pfree_recv_queue);
+ prtnframe = NULL;
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("Free because pdefrag_q==NULL: ismfrag=%d, fragnum=%d\n", ismfrag, fragnum));
+ }
+ }
+
+ if ((ismfrag == 0) && (fragnum != 0)) {
+ /* the last fragment frame */
+ /* enqueue the last fragment */
+ if (pdefrag_q != NULL) {
+ phead = get_list_head(pdefrag_q);
+ list_add_tail(&pfhdr->list, phead);
+
+ /* call recvframe_defrag to defrag */
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("defrag: ismfrag=%d, fragnum=%d\n", ismfrag, fragnum));
+ precv_frame = recvframe_defrag(padapter, pdefrag_q);
+ prtnframe = precv_frame;
+ } else {
+ /* can't find this ta's defrag_queue, so free this recv_frame */
+ rtw_free_recvframe(precv_frame, pfree_recv_queue);
+ prtnframe = NULL;
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("Free because pdefrag_q==NULL: ismfrag=%d, fragnum=%d\n", ismfrag, fragnum));
+ }
+ }
+
+ if ((prtnframe != NULL) && (prtnframe->attrib.privacy)) {
+ /* after defrag we must check tkip mic code */
+ if (recvframe_chkmic(padapter, prtnframe) == _FAIL) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chkmic(padapter, prtnframe)==_FAIL\n"));
+ rtw_free_recvframe(prtnframe, pfree_recv_queue);
+ prtnframe = NULL;
+ }
+ }
+
+
+ return prtnframe;
+}
+
+static int amsdu_to_msdu(struct adapter *padapter, struct recv_frame *prframe)
+{
+ int a_len, padding_len;
+ u16 eth_type, nSubframe_Length;
+ u8 nr_subframes, i;
+ unsigned char *pdata;
+ struct rx_pkt_attrib *pattrib;
+ unsigned char *data_ptr;
+ struct sk_buff *sub_skb, *subframes[MAX_SUBFRAME_COUNT];
+ struct recv_priv *precvpriv = &padapter->recvpriv;
+ struct __queue *pfree_recv_queue = &(precvpriv->free_recv_queue);
+ nr_subframes = 0;
+
+ pattrib = &prframe->attrib;
+
+ recvframe_pull(prframe, prframe->attrib.hdrlen);
+
+ if (prframe->attrib.iv_len > 0)
+ recvframe_pull(prframe, prframe->attrib.iv_len);
+
+ a_len = prframe->len;
+
+ pdata = prframe->rx_data;
+
+ while (a_len > ETH_HLEN) {
+ /* Offset 12 denote 2 mac address */
+ nSubframe_Length = get_unaligned_be16(pdata + 12);
+
+ if (a_len < (ETHERNET_HEADER_SIZE + nSubframe_Length)) {
+ DBG_88E("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);
+ if (sub_skb) {
+ skb_reserve(sub_skb, 12);
+ data_ptr = (u8 *)skb_put(sub_skb, nSubframe_Length);
+ memcpy(data_ptr, pdata, nSubframe_Length);
+ } else {
+ sub_skb = skb_clone(prframe->pkt, GFP_ATOMIC);
+ if (sub_skb) {
+ sub_skb->data = pdata;
+ sub_skb->len = nSubframe_Length;
+ skb_set_tail_pointer(sub_skb, nSubframe_Length);
+ } else {
+ DBG_88E("skb_clone() Fail!!! , nr_subframes=%d\n", nr_subframes);
+ break;
+ }
+ }
+
+ subframes[nr_subframes++] = sub_skb;
+
+ if (nr_subframes >= MAX_SUBFRAME_COUNT) {
+ DBG_88E("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) & (4-1));
+ 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 = get_unaligned_be16(&sub_skb->data[6]);
+ if (sub_skb->len >= 8 &&
+ ((!memcmp(sub_skb->data, rtw_rfc1042_header, SNAP_SIZE) &&
+ eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) ||
+ !memcmp(sub_skb->data, rtw_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 {
+ __be16 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 */
+ /* Insert NAT2.5 RX here! */
+ sub_skb->protocol = eth_type_trans(sub_skb, padapter->pnetdev);
+ sub_skb->dev = padapter->pnetdev;
+
+ sub_skb->ip_summed = CHECKSUM_NONE;
+
+ netif_rx(sub_skb);
+ }
+
+exit:
+
+ prframe->len = 0;
+ rtw_free_recvframe(prframe, pfree_recv_queue);/* free this recv_frame */
+
+ return _SUCCESS;
+}
+
+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) & 0xFFF;/* 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) & 0xFFF;
+ } 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 = 0xFFF - (wsize - (seq_num + 1)) + 1;
+ }
+
+ return true;
+}
+
+static int enqueue_reorder_recvframe(struct recv_reorder_ctrl *preorder_ctrl,
+ struct recv_frame *prframe)
+{
+ struct rx_pkt_attrib *pattrib = &prframe->attrib;
+ struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
+ struct list_head *phead, *plist;
+ struct recv_frame *hdr;
+ struct rx_pkt_attrib *pnextattrib;
+
+ phead = get_list_head(ppending_recvframe_queue);
+ plist = phead->next;
+
+ while (phead != plist) {
+ hdr = container_of(plist, struct recv_frame, list);
+ pnextattrib = &hdr->attrib;
+
+ if (SN_LESS(pnextattrib->seq_num, pattrib->seq_num))
+ plist = plist->next;
+ else if (SN_EQUAL(pnextattrib->seq_num, pattrib->seq_num))
+ return false;
+ else
+ break;
+ }
+
+ list_del_init(&(prframe->list));
+
+ list_add_tail(&(prframe->list), plist);
+ return true;
+}
+
+static int recv_indicatepkts_in_order(struct adapter *padapter, struct recv_reorder_ctrl *preorder_ctrl, int bforced)
+{
+ struct list_head *phead, *plist;
+ struct recv_frame *prframe;
+ struct recv_frame *prhdr;
+ 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 = phead->next;
+
+ /* Handling some condition for forced indicate case. */
+ if (bforced) {
+ if (list_empty(phead))
+ return true;
+
+ prhdr = container_of(plist, struct recv_frame, list);
+ pattrib = &prhdr->attrib;
+ preorder_ctrl->indicate_seq = pattrib->seq_num;
+ }
+
+ /* Prepare indication list and indication. */
+ /* Check if there is any packet need indicate. */
+ while (!list_empty(phead)) {
+ prhdr = container_of(plist, struct recv_frame, list);
+ prframe = (struct recv_frame *)prhdr;
+ pattrib = &prframe->attrib;
+
+ if (!SN_LESS(preorder_ctrl->indicate_seq, pattrib->seq_num)) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
+ ("recv_indicatepkts_in_order: indicate=%d seq=%d amsdu=%d\n",
+ preorder_ctrl->indicate_seq, pattrib->seq_num, pattrib->amsdu));
+ plist = plist->next;
+ list_del_init(&(prframe->list));
+
+ if (SN_EQUAL(preorder_ctrl->indicate_seq, pattrib->seq_num))
+ preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF;
+
+ /* Set this as a lock to make sure that only one thread is indicating packet. */
+
+ /* indicate this recv_frame */
+ if (!pattrib->amsdu) {
+ if ((!padapter->bDriverStopped) &&
+ (!padapter->bSurpriseRemoved))
+ rtw_recv_indicatepkt(padapter, prframe);/* indicate this recv_frame */
+ } else if (pattrib->amsdu == 1) {
+ if (amsdu_to_msdu(padapter, prframe) != _SUCCESS)
+ rtw_free_recvframe(prframe, &precvpriv->free_recv_queue);
+ } else {
+ /* error condition; */
+ }
+
+ /* Update local variables. */
+ bPktInBuf = false;
+ } else {
+ bPktInBuf = true;
+ break;
+ }
+ }
+ return bPktInBuf;
+}
+
+static int recv_indicatepkt_reorder(struct adapter *padapter,
+ struct recv_frame *prframe)
+{
+ int retval = _SUCCESS;
+ struct rx_pkt_attrib *pattrib = &prframe->attrib;
+ struct recv_reorder_ctrl *preorder_ctrl = prframe->preorder_ctrl;
+ struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
+
+ if (!pattrib->amsdu) {
+ /* s1. */
+ wlanhdr_to_ethhdr(prframe);
+
+ if ((pattrib->qos != 1) || (pattrib->eth_type == 0x0806) ||
+ (pattrib->ack_policy != 0)) {
+ if ((!padapter->bDriverStopped) &&
+ (!padapter->bSurpriseRemoved)) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@ recv_indicatepkt_reorder -recv_func recv_indicatepkt\n"));
+
+ rtw_recv_indicatepkt(padapter, prframe);
+ return _SUCCESS;
+ }
+
+ return _FAIL;
+ }
+
+ if (!preorder_ctrl->enable) {
+ /* indicate this recv_frame */
+ preorder_ctrl->indicate_seq = pattrib->seq_num;
+ rtw_recv_indicatepkt(padapter, prframe);
+
+ preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
+ return _SUCCESS;
+ }
+ } else if (pattrib->amsdu == 1) { /* temp filter -> means didn't support A-MSDUs in a A-MPDU */
+ if (!preorder_ctrl->enable) {
+ preorder_ctrl->indicate_seq = pattrib->seq_num;
+ retval = amsdu_to_msdu(padapter, prframe);
+
+ preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
+ return retval;
+ }
+ }
+
+ spin_lock_bh(&ppending_recvframe_queue->lock);
+
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_,
+ ("recv_indicatepkt_reorder: indicate=%d seq=%d\n",
+ preorder_ctrl->indicate_seq, pattrib->seq_num));
+
+ /* s2. check if winstart_b(indicate_seq) needs to been updated */
+ if (!check_indicate_seq(preorder_ctrl, pattrib->seq_num)) {
+ rtw_recv_indicatepkt(padapter, prframe);
+
+ spin_unlock_bh(&ppending_recvframe_queue->lock);
+
+ goto _success_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. */
+ /* */
+
+ /* recv_indicatepkts_in_order(padapter, preorder_ctrl, true); */
+ if (recv_indicatepkts_in_order(padapter, preorder_ctrl, false)) {
+ mod_timer(&preorder_ctrl->reordering_ctrl_timer,
+ jiffies + msecs_to_jiffies(REORDER_WAIT_TIME));
+ spin_unlock_bh(&ppending_recvframe_queue->lock);
+ } else {
+ spin_unlock_bh(&ppending_recvframe_queue->lock);
+ del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
+ }
+
+_success_exit:
+
+ return _SUCCESS;
+
+_err_exit:
+
+ spin_unlock_bh(&ppending_recvframe_queue->lock);
+
+ return _FAIL;
+}
+
+void rtw_reordering_ctrl_timeout_handler(unsigned long data)
+{
+ struct recv_reorder_ctrl *preorder_ctrl = (struct recv_reorder_ctrl *)data;
+ struct adapter *padapter = preorder_ctrl->padapter;
+ struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
+
+ if (padapter->bDriverStopped || padapter->bSurpriseRemoved)
+ return;
+
+ spin_lock_bh(&ppending_recvframe_queue->lock);
+
+ if (recv_indicatepkts_in_order(padapter, preorder_ctrl, true) == true)
+ mod_timer(&preorder_ctrl->reordering_ctrl_timer,
+ jiffies + msecs_to_jiffies(REORDER_WAIT_TIME));
+
+ spin_unlock_bh(&ppending_recvframe_queue->lock);
+}
+
+static int process_recv_indicatepkts(struct adapter *padapter,
+ struct recv_frame *prframe)
+{
+ int retval = _SUCCESS;
+ struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
+ struct ht_priv *phtpriv = &pmlmepriv->htpriv;
+
+ if (phtpriv->ht_option) { /* B/G/N Mode */
+ if (recv_indicatepkt_reorder(padapter, prframe) != _SUCCESS) {
+ /* including perform A-MPDU Rx Ordering Buffer Control */
+ if ((!padapter->bDriverStopped) &&
+ (!padapter->bSurpriseRemoved)) {
+ retval = _FAIL;
+ return retval;
+ }
+ }
+ } else { /* B/G mode */
+ retval = wlanhdr_to_ethhdr(prframe);
+ if (retval != _SUCCESS) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("wlanhdr_to_ethhdr: drop pkt\n"));
+ return retval;
+ }
+
+ if ((!padapter->bDriverStopped) &&
+ (!padapter->bSurpriseRemoved)) {
+ /* indicate this recv_frame */
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@ process_recv_indicatepkts- recv_func recv_indicatepkt\n"));
+ rtw_recv_indicatepkt(padapter, prframe);
+ } else {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("@@@@ process_recv_indicatepkts- recv_func free_indicatepkt\n"));
+
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_notice_, ("recv_func:bDriverStopped(%d) OR bSurpriseRemoved(%d)", padapter->bDriverStopped, padapter->bSurpriseRemoved));
+ retval = _FAIL;
+ return retval;
+ }
+ }
+
+ return retval;
+}
+
+static int recv_func_prehandle(struct adapter *padapter,
+ struct recv_frame *rframe)
+{
+ int ret = _SUCCESS;
+ struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
+
+ /* check the frame crtl field and decache */
+ ret = validate_recv_frame(padapter, rframe);
+ if (ret != _SUCCESS) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("recv_func: validate_recv_frame fail! drop pkt\n"));
+ rtw_free_recvframe(rframe, pfree_recv_queue);/* free this recv_frame */
+ goto exit;
+ }
+
+exit:
+ return ret;
+}
+
+static int recv_func_posthandle(struct adapter *padapter,
+ struct recv_frame *prframe)
+{
+ int ret = _SUCCESS;
+ struct recv_frame *orig_prframe = prframe;
+ struct recv_priv *precvpriv = &padapter->recvpriv;
+ struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
+
+ /* DATA FRAME */
+ rtw_led_control(padapter, LED_CTL_RX);
+
+ prframe = decryptor(padapter, prframe);
+ if (prframe == NULL) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("decryptor: drop pkt\n"));
+ ret = _FAIL;
+ goto _recv_data_drop;
+ }
+
+ prframe = recvframe_chk_defrag(padapter, prframe);
+ if (prframe == NULL) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recvframe_chk_defrag: drop pkt\n"));
+ goto _recv_data_drop;
+ }
+
+ prframe = portctrl(padapter, prframe);
+ if (prframe == NULL) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("portctrl: drop pkt\n"));
+ ret = _FAIL;
+ goto _recv_data_drop;
+ }
+
+ count_rx_stats(padapter, prframe, NULL);
+
+ ret = process_recv_indicatepkts(padapter, prframe);
+ if (ret != _SUCCESS) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("recv_func: process_recv_indicatepkts fail!\n"));
+ rtw_free_recvframe(orig_prframe, pfree_recv_queue);/* free this recv_frame */
+ goto _recv_data_drop;
+ }
+ return ret;
+
+_recv_data_drop:
+ precvpriv->rx_drop++;
+ return ret;
+}
+
+static int recv_func(struct adapter *padapter, struct recv_frame *rframe)
+{
+ int ret;
+ struct rx_pkt_attrib *prxattrib = &rframe->attrib;
+ struct security_priv *psecuritypriv = &padapter->securitypriv;
+ struct mlme_priv *mlmepriv = &padapter->mlmepriv;
+
+ /* check if need to handle uc_swdec_pending_queue*/
+ if (check_fwstate(mlmepriv, WIFI_STATION_STATE) && psecuritypriv->busetkipkey) {
+ struct recv_frame *pending_frame;
+
+ while ((pending_frame = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue))) {
+ if (recv_func_posthandle(padapter, pending_frame) == _SUCCESS)
+ DBG_88E("%s: dequeue uc_swdec_pending_queue\n", __func__);
+ }
+ }
+
+ ret = recv_func_prehandle(padapter, rframe);
+
+ if (ret == _SUCCESS) {
+ /* check if need to enqueue into uc_swdec_pending_queue*/
+ if (check_fwstate(mlmepriv, WIFI_STATION_STATE) &&
+ !IS_MCAST(prxattrib->ra) && prxattrib->encrypt > 0 &&
+ (prxattrib->bdecrypted == 0 || psecuritypriv->sw_decrypt) &&
+ !is_wep_enc(psecuritypriv->dot11PrivacyAlgrthm) &&
+ !psecuritypriv->busetkipkey) {
+ rtw_enqueue_recvframe(rframe, &padapter->recvpriv.uc_swdec_pending_queue);
+ DBG_88E("%s: no key, enqueue uc_swdec_pending_queue\n", __func__);
+ goto exit;
+ }
+
+ ret = recv_func_posthandle(padapter, rframe);
+ }
+
+exit:
+ return ret;
+}
+
+s32 rtw_recv_entry(struct recv_frame *precvframe)
+{
+ struct adapter *padapter;
+ struct recv_priv *precvpriv;
+ s32 ret = _SUCCESS;
+
+
+ padapter = precvframe->adapter;
+
+ precvpriv = &padapter->recvpriv;
+
+ ret = recv_func(padapter, precvframe);
+ if (ret == _FAIL) {
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("rtw_recv_entry: recv_func return fail!!!\n"));
+ goto _recv_entry_drop;
+ }
+
+ precvpriv->rx_pkts++;
+
+
+ return ret;
+
+_recv_entry_drop:
+ return ret;
+}
+
+void rtw_signal_stat_timer_hdl(unsigned long data)
+{
+ struct adapter *adapter = (struct adapter *)data;
+ struct recv_priv *recvpriv = &adapter->recvpriv;
+
+ u32 tmp_s, tmp_q;
+ u8 avg_signal_strength = 0;
+ u8 avg_signal_qual = 0;
+ u8 _alpha = 3; /* this value is based on converging_constant = 5000 and sampling_interval = 1000 */
+
+ if (adapter->recvpriv.is_signal_dbg) {
+ /* update the user specific value, signal_strength_dbg, to signal_strength, rssi */
+ adapter->recvpriv.signal_strength = adapter->recvpriv.signal_strength_dbg;
+ adapter->recvpriv.rssi = (s8)translate_percentage_to_dbm((u8)adapter->recvpriv.signal_strength_dbg);
+ } else {
+ if (recvpriv->signal_strength_data.update_req == 0) {/* update_req is clear, means we got rx */
+ avg_signal_strength = recvpriv->signal_strength_data.avg_val;
+ /* after avg_vals are acquired, we can re-stat the signal values */
+ recvpriv->signal_strength_data.update_req = 1;
+ }
+
+ if (recvpriv->signal_qual_data.update_req == 0) {/* update_req is clear, means we got rx */
+ avg_signal_qual = recvpriv->signal_qual_data.avg_val;
+ /* after avg_vals are acquired, we can re-stat the signal values */
+ recvpriv->signal_qual_data.update_req = 1;
+ }
+
+ /* update value of signal_strength, rssi, signal_qual */
+ if (check_fwstate(&adapter->mlmepriv, _FW_UNDER_SURVEY) == false) {
+ tmp_s = avg_signal_strength+(_alpha-1)*recvpriv->signal_strength;
+ if (tmp_s % _alpha)
+ tmp_s = tmp_s/_alpha + 1;
+ else
+ tmp_s = tmp_s/_alpha;
+ if (tmp_s > 100)
+ tmp_s = 100;
+
+ tmp_q = avg_signal_qual+(_alpha-1)*recvpriv->signal_qual;
+ if (tmp_q % _alpha)
+ tmp_q = tmp_q/_alpha + 1;
+ else
+ tmp_q = tmp_q/_alpha;
+ if (tmp_q > 100)
+ tmp_q = 100;
+
+ recvpriv->signal_strength = tmp_s;
+ recvpriv->rssi = (s8)translate_percentage_to_dbm(tmp_s);
+ recvpriv->signal_qual = tmp_q;
+ }
+ }
+ rtw_set_signal_stat_timer(recvpriv);
+}
Code Review / kvmfornfv.git / blobdiff