This source file includes following definitions.
- rtw_os_xmit_resource_alloc
- rtw_os_xmit_resource_free
- rtw_os_pkt_complete
- rtw_os_xmit_complete
- rtw_os_xmit_schedule
- rtw_check_xmit_resource
- rtw_mlcst2unicst
- rtw_xmit_entry
1
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5
6
7 #define _XMIT_OSDEP_C_
8
9 #include <osdep_service.h>
10 #include <drv_types.h>
11
12 #include <wifi.h>
13 #include <mlme_osdep.h>
14 #include <xmit_osdep.h>
15 #include <osdep_intf.h>
16
17 int rtw_os_xmit_resource_alloc(struct adapter *padapter,
18 struct xmit_buf *pxmitbuf, u32 alloc_sz)
19 {
20 int i;
21
22 pxmitbuf->pallocated_buf = kzalloc(alloc_sz, GFP_KERNEL);
23 if (!pxmitbuf->pallocated_buf)
24 return _FAIL;
25
26 pxmitbuf->pbuf = PTR_ALIGN(pxmitbuf->pallocated_buf, XMITBUF_ALIGN_SZ);
27 pxmitbuf->dma_transfer_addr = 0;
28
29 for (i = 0; i < 8; i++) {
30 pxmitbuf->pxmit_urb[i] = usb_alloc_urb(0, GFP_KERNEL);
31 if (!pxmitbuf->pxmit_urb[i]) {
32 DBG_88E("pxmitbuf->pxmit_urb[i]==NULL");
33 return _FAIL;
34 }
35 }
36 return _SUCCESS;
37 }
38
39 void rtw_os_xmit_resource_free(struct xmit_buf *pxmitbuf)
40 {
41 int i;
42
43 for (i = 0; i < 8; i++)
44 usb_free_urb(pxmitbuf->pxmit_urb[i]);
45
46 kfree(pxmitbuf->pallocated_buf);
47 }
48
49 #define WMM_XMIT_THRESHOLD (NR_XMITFRAME * 2 / 5)
50
51 void rtw_os_pkt_complete(struct adapter *padapter, struct sk_buff *pkt)
52 {
53 u16 queue;
54 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
55
56 queue = skb_get_queue_mapping(pkt);
57 if (padapter->registrypriv.wifi_spec) {
58 if (__netif_subqueue_stopped(padapter->pnetdev, queue) &&
59 (pxmitpriv->hwxmits[queue].accnt < WMM_XMIT_THRESHOLD))
60 netif_wake_subqueue(padapter->pnetdev, queue);
61 } else {
62 if (__netif_subqueue_stopped(padapter->pnetdev, queue))
63 netif_wake_subqueue(padapter->pnetdev, queue);
64 }
65
66 dev_kfree_skb_any(pkt);
67 }
68
69 void rtw_os_xmit_complete(struct adapter *padapter, struct xmit_frame *pxframe)
70 {
71 if (pxframe->pkt)
72 rtw_os_pkt_complete(padapter, pxframe->pkt);
73 pxframe->pkt = NULL;
74 }
75
76 void rtw_os_xmit_schedule(struct adapter *padapter)
77 {
78 struct xmit_priv *pxmitpriv;
79
80 if (!padapter)
81 return;
82
83 pxmitpriv = &padapter->xmitpriv;
84
85 spin_lock_bh(&pxmitpriv->lock);
86
87 if (rtw_txframes_pending(padapter))
88 tasklet_hi_schedule(&pxmitpriv->xmit_tasklet);
89
90 spin_unlock_bh(&pxmitpriv->lock);
91 }
92
93 static void rtw_check_xmit_resource(struct adapter *padapter,
94 struct sk_buff *pkt)
95 {
96 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
97 u16 queue;
98
99 queue = skb_get_queue_mapping(pkt);
100 if (padapter->registrypriv.wifi_spec) {
101
102 if (pxmitpriv->hwxmits[queue].accnt > WMM_XMIT_THRESHOLD)
103 netif_stop_subqueue(padapter->pnetdev, queue);
104 } else {
105 if (pxmitpriv->free_xmitframe_cnt <= 4) {
106 if (!netif_tx_queue_stopped(netdev_get_tx_queue(padapter->pnetdev, queue)))
107 netif_stop_subqueue(padapter->pnetdev, queue);
108 }
109 }
110 }
111
112 static int rtw_mlcst2unicst(struct adapter *padapter, struct sk_buff *skb)
113 {
114 struct sta_priv *pstapriv = &padapter->stapriv;
115 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
116 struct list_head *phead, *plist;
117 struct sk_buff *newskb;
118 struct sta_info *psta = NULL;
119 s32 res;
120
121 spin_lock_bh(&pstapriv->asoc_list_lock);
122 phead = &pstapriv->asoc_list;
123 plist = phead->next;
124
125
126 while (phead != plist) {
127 psta = container_of(plist, struct sta_info, asoc_list);
128
129 plist = plist->next;
130
131
132 if (!memcmp(psta->hwaddr, &skb->data[6], 6))
133 continue;
134
135 newskb = skb_copy(skb, GFP_ATOMIC);
136
137 if (newskb) {
138 memcpy(newskb->data, psta->hwaddr, 6);
139 res = rtw_xmit(padapter, &newskb);
140 if (res < 0) {
141 DBG_88E("%s()-%d: rtw_xmit() return error!\n",
142 __func__, __LINE__);
143 pxmitpriv->tx_drop++;
144 dev_kfree_skb_any(newskb);
145 } else {
146 pxmitpriv->tx_pkts++;
147 }
148 } else {
149 DBG_88E("%s-%d: skb_copy() failed!\n",
150 __func__, __LINE__);
151 pxmitpriv->tx_drop++;
152
153 spin_unlock_bh(&pstapriv->asoc_list_lock);
154
155
156
157
158 return false;
159 }
160 }
161
162 spin_unlock_bh(&pstapriv->asoc_list_lock);
163 dev_kfree_skb_any(skb);
164 return true;
165 }
166
167 int rtw_xmit_entry(struct sk_buff *pkt, struct net_device *pnetdev)
168 {
169 struct adapter *padapter = (struct adapter *)rtw_netdev_priv(pnetdev);
170 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
171 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
172 s32 res = 0;
173
174 RT_TRACE(_module_rtl871x_mlme_c_, _drv_info_, ("+xmit_enry\n"));
175
176 if (!rtw_if_up(padapter)) {
177 RT_TRACE(_module_xmit_osdep_c_, _drv_err_,
178 ("%s: rtw_if_up fail\n", __func__));
179 goto drop_packet;
180 }
181
182 rtw_check_xmit_resource(padapter, pkt);
183
184 if (!rtw_mc2u_disable && check_fwstate(pmlmepriv, WIFI_AP_STATE) &&
185 (IP_MCAST_MAC(pkt->data) || ICMPV6_MCAST_MAC(pkt->data)) &&
186 (padapter->registrypriv.wifi_spec == 0)) {
187 if (pxmitpriv->free_xmitframe_cnt > NR_XMITFRAME / 4) {
188 res = rtw_mlcst2unicst(padapter, pkt);
189 if (res)
190 goto exit;
191 }
192 }
193
194 res = rtw_xmit(padapter, &pkt);
195 if (res < 0)
196 goto drop_packet;
197
198 pxmitpriv->tx_pkts++;
199 RT_TRACE(_module_xmit_osdep_c_, _drv_info_,
200 ("%s: tx_pkts=%d\n", __func__, (u32)pxmitpriv->tx_pkts));
201 goto exit;
202
203 drop_packet:
204 pxmitpriv->tx_drop++;
205 dev_kfree_skb_any(pkt);
206 RT_TRACE(_module_xmit_osdep_c_, _drv_notice_,
207 ("%s: drop, tx_drop=%d\n", __func__, (u32)pxmitpriv->tx_drop));
208
209 exit:
210 return 0;
211 }