1 // SPDX-License-Identifier: GPL-2.0
2 /******************************************************************************
3 *
4 * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
5 *
6 ******************************************************************************/
7 #include <osdep_service.h>
8 #include <drv_types.h>
9
10 #include <wifi.h>
11 #include <recv_osdep.h>
12
13 #include <osdep_intf.h>
14 #include <usb_ops_linux.h>
15
16 /* alloc os related resource in struct recv_buf */
rtw_os_recvbuf_resource_alloc(struct adapter * padapter,struct recv_buf * precvbuf)17 int rtw_os_recvbuf_resource_alloc(struct adapter *padapter,
18 struct recv_buf *precvbuf)
19 {
20 precvbuf->pskb = NULL;
21 precvbuf->reuse = false;
22 precvbuf->purb = usb_alloc_urb(0, GFP_KERNEL);
23 if (!precvbuf->purb)
24 return _FAIL;
25 return _SUCCESS;
26 }
27
rtw_handle_tkip_mic_err(struct adapter * padapter,u8 bgroup)28 void rtw_handle_tkip_mic_err(struct adapter *padapter, u8 bgroup)
29 {
30 union iwreq_data wrqu;
31 struct iw_michaelmicfailure ev;
32 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
33 struct security_priv *psecuritypriv = &padapter->securitypriv;
34 u32 cur_time = 0;
35
36 if (psecuritypriv->last_mic_err_time == 0) {
37 psecuritypriv->last_mic_err_time = jiffies;
38 } else {
39 cur_time = jiffies;
40
41 if (cur_time - psecuritypriv->last_mic_err_time < 60 * HZ) {
42 psecuritypriv->btkip_countermeasure = true;
43 psecuritypriv->last_mic_err_time = 0;
44 psecuritypriv->btkip_countermeasure_time = cur_time;
45 } else {
46 psecuritypriv->last_mic_err_time = jiffies;
47 }
48 }
49
50 memset(&ev, 0x00, sizeof(ev));
51 if (bgroup)
52 ev.flags |= IW_MICFAILURE_GROUP;
53 else
54 ev.flags |= IW_MICFAILURE_PAIRWISE;
55
56 ev.src_addr.sa_family = ARPHRD_ETHER;
57 memcpy(ev.src_addr.sa_data, &pmlmepriv->assoc_bssid[0], ETH_ALEN);
58 memset(&wrqu, 0x00, sizeof(wrqu));
59 wrqu.data.length = sizeof(ev);
60 wireless_send_event(padapter->pnetdev, IWEVMICHAELMICFAILURE,
61 &wrqu, (char *)&ev);
62 }
63
rtw_recv_indicatepkt(struct adapter * padapter,struct recv_frame * precv_frame)64 int rtw_recv_indicatepkt(struct adapter *padapter,
65 struct recv_frame *precv_frame)
66 {
67 struct recv_priv *precvpriv;
68 struct __queue *pfree_recv_queue;
69 struct sk_buff *skb;
70 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
71
72 precvpriv = &padapter->recvpriv;
73 pfree_recv_queue = &precvpriv->free_recv_queue;
74
75 skb = precv_frame->pkt;
76 if (!skb) {
77 RT_TRACE(_module_recv_osdep_c_, _drv_err_,
78 ("%s():skb == NULL something wrong!!!!\n", __func__));
79 goto _recv_indicatepkt_drop;
80 }
81
82 if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
83 struct sk_buff *pskb2 = NULL;
84 struct sta_info *psta = NULL;
85 struct sta_priv *pstapriv = &padapter->stapriv;
86 struct rx_pkt_attrib *pattrib = &precv_frame->attrib;
87 bool mcast = is_multicast_ether_addr(pattrib->dst);
88
89 if (memcmp(pattrib->dst, myid(&padapter->eeprompriv),
90 ETH_ALEN)) {
91 if (mcast) {
92 psta = rtw_get_bcmc_stainfo(padapter);
93 pskb2 = skb_clone(skb, GFP_ATOMIC);
94 } else {
95 psta = rtw_get_stainfo(pstapriv, pattrib->dst);
96 }
97
98 if (psta) {
99 struct net_device *pnetdev;
100
101 pnetdev = (struct net_device *)padapter->pnetdev;
102 skb->dev = pnetdev;
103 skb_set_queue_mapping(skb, rtw_recv_select_queue(skb));
104
105 rtw_xmit_entry(skb, pnetdev);
106
107 if (mcast)
108 skb = pskb2;
109 else
110 goto _recv_indicatepkt_end;
111 }
112 }
113 }
114
115 skb->ip_summed = CHECKSUM_NONE;
116 skb->dev = padapter->pnetdev;
117 skb->protocol = eth_type_trans(skb, padapter->pnetdev);
118
119 netif_rx(skb);
120
121 _recv_indicatepkt_end:
122
123 /* pointers to NULL before rtw_free_recvframe() */
124 precv_frame->pkt = NULL;
125
126 rtw_free_recvframe(precv_frame, pfree_recv_queue);
127
128 RT_TRACE(_module_recv_osdep_c_, _drv_info_,
129 ("\n %s :after netif_rx!!!!\n", __func__));
130
131 return _SUCCESS;
132
133 _recv_indicatepkt_drop:
134
135 /* enqueue back to free_recv_queue */
136 rtw_free_recvframe(precv_frame, pfree_recv_queue);
137
138 return _FAIL;
139 }
140
rtw_init_recv_timer(struct recv_reorder_ctrl * preorder_ctrl)141 void rtw_init_recv_timer(struct recv_reorder_ctrl *preorder_ctrl)
142 {
143 timer_setup(&preorder_ctrl->reordering_ctrl_timer,
144 rtw_reordering_ctrl_timeout_handler, 0);
145 }
146