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 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
17 *
18 *
19 ******************************************************************************/
20 #define _RECV_OSDEP_C_
21
22 #include <osdep_service.h>
23 #include <drv_types.h>
24
25 #include <wifi.h>
26 #include <recv_osdep.h>
27
28 #include <osdep_intf.h>
29 #include <usb_ops_linux.h>
30
31 /* alloc os related resource in struct recv_frame */
rtw_os_recv_resource_alloc(struct adapter * padapter,struct recv_frame * precvframe)32 int rtw_os_recv_resource_alloc(struct adapter *padapter,
33 struct recv_frame *precvframe)
34 {
35 precvframe->pkt_newalloc = NULL;
36 precvframe->pkt = NULL;
37 return _SUCCESS;
38 }
39
40 /* alloc os related resource in struct recv_buf */
rtw_os_recvbuf_resource_alloc(struct adapter * padapter,struct recv_buf * precvbuf)41 int rtw_os_recvbuf_resource_alloc(struct adapter *padapter,
42 struct recv_buf *precvbuf)
43 {
44 int res = _SUCCESS;
45
46 precvbuf->purb = usb_alloc_urb(0, GFP_KERNEL);
47 if (precvbuf->purb == NULL)
48 res = _FAIL;
49 precvbuf->pskb = NULL;
50 precvbuf->reuse = false;
51 return res;
52 }
53
rtw_handle_tkip_mic_err(struct adapter * padapter,u8 bgroup)54 void rtw_handle_tkip_mic_err(struct adapter *padapter, u8 bgroup)
55 {
56 union iwreq_data wrqu;
57 struct iw_michaelmicfailure ev;
58 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
59 struct security_priv *psecuritypriv = &padapter->securitypriv;
60 u32 cur_time = 0;
61
62 if (psecuritypriv->last_mic_err_time == 0) {
63 psecuritypriv->last_mic_err_time = jiffies;
64 } else {
65 cur_time = jiffies;
66
67 if (cur_time - psecuritypriv->last_mic_err_time < 60*HZ) {
68 psecuritypriv->btkip_countermeasure = true;
69 psecuritypriv->last_mic_err_time = 0;
70 psecuritypriv->btkip_countermeasure_time = cur_time;
71 } else {
72 psecuritypriv->last_mic_err_time = jiffies;
73 }
74 }
75
76 memset(&ev, 0x00, sizeof(ev));
77 if (bgroup)
78 ev.flags |= IW_MICFAILURE_GROUP;
79 else
80 ev.flags |= IW_MICFAILURE_PAIRWISE;
81
82 ev.src_addr.sa_family = ARPHRD_ETHER;
83 memcpy(ev.src_addr.sa_data, &pmlmepriv->assoc_bssid[0], ETH_ALEN);
84 memset(&wrqu, 0x00, sizeof(wrqu));
85 wrqu.data.length = sizeof(ev);
86 wireless_send_event(padapter->pnetdev, IWEVMICHAELMICFAILURE,
87 &wrqu, (char *)&ev);
88 }
89
rtw_recv_indicatepkt(struct adapter * padapter,struct recv_frame * precv_frame)90 int rtw_recv_indicatepkt(struct adapter *padapter,
91 struct recv_frame *precv_frame)
92 {
93 struct recv_priv *precvpriv;
94 struct __queue *pfree_recv_queue;
95 struct sk_buff *skb;
96 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
97
98
99 precvpriv = &(padapter->recvpriv);
100 pfree_recv_queue = &(precvpriv->free_recv_queue);
101
102 skb = precv_frame->pkt;
103 if (skb == NULL) {
104 RT_TRACE(_module_recv_osdep_c_, _drv_err_,
105 ("rtw_recv_indicatepkt():skb == NULL something wrong!!!!\n"));
106 goto _recv_indicatepkt_drop;
107 }
108
109 RT_TRACE(_module_recv_osdep_c_, _drv_info_,
110 ("rtw_recv_indicatepkt():skb != NULL !!!\n"));
111 RT_TRACE(_module_recv_osdep_c_, _drv_info_,
112 ("rtw_recv_indicatepkt():precv_frame->rx_head =%p precv_frame->hdr.rx_data =%p\n",
113 precv_frame->rx_head, precv_frame->rx_data));
114 RT_TRACE(_module_recv_osdep_c_, _drv_info_,
115 ("precv_frame->hdr.rx_tail =%p precv_frame->rx_end =%p precv_frame->hdr.len =%d\n",
116 precv_frame->rx_tail, precv_frame->rx_end,
117 precv_frame->len));
118
119 skb->data = precv_frame->rx_data;
120
121 skb_set_tail_pointer(skb, precv_frame->len);
122
123 skb->len = precv_frame->len;
124
125 RT_TRACE(_module_recv_osdep_c_, _drv_info_,
126 ("skb->head =%p skb->data =%p skb->tail =%p skb->end =%p skb->len =%d\n",
127 skb->head, skb->data, skb_tail_pointer(skb),
128 skb_end_pointer(skb), skb->len));
129
130 if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
131 struct sk_buff *pskb2 = NULL;
132 struct sta_info *psta = NULL;
133 struct sta_priv *pstapriv = &padapter->stapriv;
134 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
135 int bmcast = IS_MCAST(pattrib->dst);
136
137 if (memcmp(pattrib->dst, myid(&padapter->eeprompriv),
138 ETH_ALEN)) {
139 if (bmcast) {
140 psta = rtw_get_bcmc_stainfo(padapter);
141 pskb2 = skb_clone(skb, GFP_ATOMIC);
142 } else {
143 psta = rtw_get_stainfo(pstapriv, pattrib->dst);
144 }
145
146 if (psta) {
147 struct net_device *pnetdev;
148
149 pnetdev = (struct net_device *)padapter->pnetdev;
150 skb->dev = pnetdev;
151 skb_set_queue_mapping(skb, rtw_recv_select_queue(skb));
152
153 rtw_xmit_entry(skb, pnetdev);
154
155 if (bmcast)
156 skb = pskb2;
157 else
158 goto _recv_indicatepkt_end;
159 }
160 }
161 }
162
163 rcu_read_lock();
164 rcu_dereference(padapter->pnetdev->rx_handler_data);
165 rcu_read_unlock();
166
167 skb->ip_summed = CHECKSUM_NONE;
168 skb->dev = padapter->pnetdev;
169 skb->protocol = eth_type_trans(skb, padapter->pnetdev);
170
171 netif_rx(skb);
172
173 _recv_indicatepkt_end:
174
175 /* pointers to NULL before rtw_free_recvframe() */
176 precv_frame->pkt = NULL;
177
178 rtw_free_recvframe(precv_frame, pfree_recv_queue);
179
180 RT_TRACE(_module_recv_osdep_c_, _drv_info_,
181 ("\n rtw_recv_indicatepkt :after netif_rx!!!!\n"));
182
183
184 return _SUCCESS;
185
186 _recv_indicatepkt_drop:
187
188 /* enqueue back to free_recv_queue */
189 rtw_free_recvframe(precv_frame, pfree_recv_queue);
190
191 return _FAIL;
192 }
193
rtw_init_recv_timer(struct recv_reorder_ctrl * preorder_ctrl)194 void rtw_init_recv_timer(struct recv_reorder_ctrl *preorder_ctrl)
195 {
196
197 setup_timer(&preorder_ctrl->reordering_ctrl_timer,
198 rtw_reordering_ctrl_timeout_handler,
199 (unsigned long)preorder_ctrl);
200 }
201