1 /******************************************************************************
2 *
3 * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 ******************************************************************************/
15 #include <osdep_service.h>
16 #include <drv_types.h>
17
18 #include <wifi.h>
19 #include <recv_osdep.h>
20
21 #include <osdep_intf.h>
22 #include <usb_ops_linux.h>
23
24 /* alloc os related resource in struct recv_frame */
rtw_os_recv_resource_alloc(struct recv_frame * precvframe)25 void rtw_os_recv_resource_alloc(struct recv_frame *precvframe)
26 {
27 precvframe->pkt = NULL;
28 }
29
30 /* alloc os related resource in struct recv_buf */
rtw_os_recvbuf_resource_alloc(struct adapter * padapter,struct recv_buf * precvbuf)31 int rtw_os_recvbuf_resource_alloc(struct adapter *padapter,
32 struct recv_buf *precvbuf)
33 {
34 precvbuf->pskb = NULL;
35 precvbuf->reuse = false;
36 precvbuf->purb = usb_alloc_urb(0, GFP_KERNEL);
37 if (!precvbuf->purb)
38 return _FAIL;
39 return _SUCCESS;
40 }
41
rtw_handle_tkip_mic_err(struct adapter * padapter,u8 bgroup)42 void rtw_handle_tkip_mic_err(struct adapter *padapter, u8 bgroup)
43 {
44 union iwreq_data wrqu;
45 struct iw_michaelmicfailure ev;
46 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
47 struct security_priv *psecuritypriv = &padapter->securitypriv;
48 u32 cur_time = 0;
49
50 if (psecuritypriv->last_mic_err_time == 0) {
51 psecuritypriv->last_mic_err_time = jiffies;
52 } else {
53 cur_time = jiffies;
54
55 if (cur_time - psecuritypriv->last_mic_err_time < 60*HZ) {
56 psecuritypriv->btkip_countermeasure = true;
57 psecuritypriv->last_mic_err_time = 0;
58 psecuritypriv->btkip_countermeasure_time = cur_time;
59 } else {
60 psecuritypriv->last_mic_err_time = jiffies;
61 }
62 }
63
64 memset(&ev, 0x00, sizeof(ev));
65 if (bgroup)
66 ev.flags |= IW_MICFAILURE_GROUP;
67 else
68 ev.flags |= IW_MICFAILURE_PAIRWISE;
69
70 ev.src_addr.sa_family = ARPHRD_ETHER;
71 memcpy(ev.src_addr.sa_data, &pmlmepriv->assoc_bssid[0], ETH_ALEN);
72 memset(&wrqu, 0x00, sizeof(wrqu));
73 wrqu.data.length = sizeof(ev);
74 wireless_send_event(padapter->pnetdev, IWEVMICHAELMICFAILURE,
75 &wrqu, (char *)&ev);
76 }
77
rtw_recv_indicatepkt(struct adapter * padapter,struct recv_frame * precv_frame)78 int rtw_recv_indicatepkt(struct adapter *padapter,
79 struct recv_frame *precv_frame)
80 {
81 struct recv_priv *precvpriv;
82 struct __queue *pfree_recv_queue;
83 struct sk_buff *skb;
84 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
85
86
87 precvpriv = &(padapter->recvpriv);
88 pfree_recv_queue = &(precvpriv->free_recv_queue);
89
90 skb = precv_frame->pkt;
91 if (!skb) {
92 RT_TRACE(_module_recv_osdep_c_, _drv_err_,
93 ("rtw_recv_indicatepkt():skb == NULL something wrong!!!!\n"));
94 goto _recv_indicatepkt_drop;
95 }
96
97 RT_TRACE(_module_recv_osdep_c_, _drv_info_,
98 ("rtw_recv_indicatepkt():skb != NULL !!!\n"));
99 RT_TRACE(_module_recv_osdep_c_, _drv_info_,
100 ("rtw_recv_indicatepkt():precv_frame->rx_head =%p precv_frame->hdr.rx_data =%p\n",
101 precv_frame->rx_head, precv_frame->rx_data));
102 RT_TRACE(_module_recv_osdep_c_, _drv_info_,
103 ("precv_frame->hdr.rx_tail =%p precv_frame->rx_end =%p precv_frame->hdr.len =%d\n",
104 precv_frame->rx_tail, precv_frame->rx_end,
105 precv_frame->len));
106
107 skb->data = precv_frame->rx_data;
108
109 skb_set_tail_pointer(skb, precv_frame->len);
110
111 skb->len = precv_frame->len;
112
113 RT_TRACE(_module_recv_osdep_c_, _drv_info_,
114 ("skb->head =%p skb->data =%p skb->tail =%p skb->end =%p skb->len =%d\n",
115 skb->head, skb->data, skb_tail_pointer(skb),
116 skb_end_pointer(skb), skb->len));
117
118 if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
119 struct sk_buff *pskb2 = NULL;
120 struct sta_info *psta = NULL;
121 struct sta_priv *pstapriv = &padapter->stapriv;
122 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
123 int bmcast = IS_MCAST(pattrib->dst);
124
125 if (memcmp(pattrib->dst, myid(&padapter->eeprompriv),
126 ETH_ALEN)) {
127 if (bmcast) {
128 psta = rtw_get_bcmc_stainfo(padapter);
129 pskb2 = skb_clone(skb, GFP_ATOMIC);
130 } else {
131 psta = rtw_get_stainfo(pstapriv, pattrib->dst);
132 }
133
134 if (psta) {
135 struct net_device *pnetdev;
136
137 pnetdev = (struct net_device *)padapter->pnetdev;
138 skb->dev = pnetdev;
139 skb_set_queue_mapping(skb, rtw_recv_select_queue(skb));
140
141 rtw_xmit_entry(skb, pnetdev);
142
143 if (bmcast)
144 skb = pskb2;
145 else
146 goto _recv_indicatepkt_end;
147 }
148 }
149 }
150
151 rcu_read_lock();
152 rcu_dereference(padapter->pnetdev->rx_handler_data);
153 rcu_read_unlock();
154
155 skb->ip_summed = CHECKSUM_NONE;
156 skb->dev = padapter->pnetdev;
157 skb->protocol = eth_type_trans(skb, padapter->pnetdev);
158
159 netif_rx(skb);
160
161 _recv_indicatepkt_end:
162
163 /* pointers to NULL before rtw_free_recvframe() */
164 precv_frame->pkt = NULL;
165
166 rtw_free_recvframe(precv_frame, pfree_recv_queue);
167
168 RT_TRACE(_module_recv_osdep_c_, _drv_info_,
169 ("\n rtw_recv_indicatepkt :after netif_rx!!!!\n"));
170
171
172 return _SUCCESS;
173
174 _recv_indicatepkt_drop:
175
176 /* enqueue back to free_recv_queue */
177 rtw_free_recvframe(precv_frame, pfree_recv_queue);
178
179 return _FAIL;
180 }
181
rtw_init_recv_timer(struct recv_reorder_ctrl * preorder_ctrl)182 void rtw_init_recv_timer(struct recv_reorder_ctrl *preorder_ctrl)
183 {
184
185 setup_timer(&preorder_ctrl->reordering_ctrl_timer,
186 rtw_reordering_ctrl_timeout_handler,
187 (unsigned long)preorder_ctrl);
188 }
189