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58391efd | 1 | // SPDX-License-Identifier: GPL-2.0 |
554c0a3a HG |
2 | /****************************************************************************** |
3 | * | |
4 | * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved. | |
5 | * | |
554c0a3a HG |
6 | ******************************************************************************/ |
7 | ||
8 | ||
9 | #define _OSDEP_SERVICE_C_ | |
10 | ||
11 | #include <drv_types.h> | |
12 | #include <rtw_debug.h> | |
13 | ||
14 | /* | |
15 | * Translate the OS dependent @param error_code to OS independent RTW_STATUS_CODE | |
16 | * @return: one of RTW_STATUS_CODE | |
17 | */ | |
18 | inline int RTW_STATUS_CODE(int error_code) | |
19 | { | |
20 | if (error_code >= 0) | |
21 | return _SUCCESS; | |
22 | return _FAIL; | |
23 | } | |
24 | ||
35628c4a | 25 | void *_rtw_malloc(u32 sz) |
554c0a3a | 26 | { |
35628c4a | 27 | return kmalloc(sz, in_interrupt() ? GFP_ATOMIC : GFP_KERNEL); |
554c0a3a HG |
28 | } |
29 | ||
35628c4a | 30 | void *_rtw_zmalloc(u32 sz) |
554c0a3a | 31 | { |
35628c4a | 32 | void *pbuf = _rtw_malloc(sz); |
554c0a3a | 33 | |
35628c4a | 34 | if (pbuf) |
554c0a3a | 35 | memset(pbuf, 0, sz); |
554c0a3a HG |
36 | |
37 | return pbuf; | |
38 | } | |
39 | ||
40 | inline struct sk_buff *_rtw_skb_alloc(u32 sz) | |
41 | { | |
42 | return __dev_alloc_skb(sz, in_interrupt() ? GFP_ATOMIC : GFP_KERNEL); | |
43 | } | |
44 | ||
45 | inline struct sk_buff *_rtw_skb_copy(const struct sk_buff *skb) | |
46 | { | |
47 | return skb_copy(skb, in_interrupt() ? GFP_ATOMIC : GFP_KERNEL); | |
48 | } | |
49 | ||
50 | inline struct sk_buff *_rtw_skb_clone(struct sk_buff *skb) | |
51 | { | |
52 | return skb_clone(skb, in_interrupt() ? GFP_ATOMIC : GFP_KERNEL); | |
53 | } | |
54 | ||
55 | inline int _rtw_netif_rx(_nic_hdl ndev, struct sk_buff *skb) | |
56 | { | |
57 | skb->dev = ndev; | |
58 | return netif_rx(skb); | |
59 | } | |
60 | ||
554c0a3a HG |
61 | void _rtw_init_queue(struct __queue *pqueue) |
62 | { | |
63 | INIT_LIST_HEAD(&(pqueue->queue)); | |
64 | ||
65 | spin_lock_init(&(pqueue->lock)); | |
66 | } | |
67 | ||
554c0a3a HG |
68 | struct net_device *rtw_alloc_etherdev_with_old_priv(int sizeof_priv, void *old_priv) |
69 | { | |
70 | struct net_device *pnetdev; | |
71 | struct rtw_netdev_priv_indicator *pnpi; | |
72 | ||
73 | pnetdev = alloc_etherdev_mq(sizeof(struct rtw_netdev_priv_indicator), 4); | |
74 | if (!pnetdev) | |
75 | goto RETURN; | |
76 | ||
77 | pnpi = netdev_priv(pnetdev); | |
a89ba681 HK |
78 | pnpi->priv = old_priv; |
79 | pnpi->sizeof_priv = sizeof_priv; | |
554c0a3a HG |
80 | |
81 | RETURN: | |
82 | return pnetdev; | |
83 | } | |
84 | ||
85 | struct net_device *rtw_alloc_etherdev(int sizeof_priv) | |
86 | { | |
87 | struct net_device *pnetdev; | |
88 | struct rtw_netdev_priv_indicator *pnpi; | |
89 | ||
90 | pnetdev = alloc_etherdev_mq(sizeof(struct rtw_netdev_priv_indicator), 4); | |
91 | if (!pnetdev) | |
92 | goto RETURN; | |
93 | ||
94 | pnpi = netdev_priv(pnetdev); | |
95 | ||
96 | pnpi->priv = vzalloc(sizeof_priv); | |
97 | if (!pnpi->priv) { | |
98 | free_netdev(pnetdev); | |
99 | pnetdev = NULL; | |
100 | goto RETURN; | |
101 | } | |
102 | ||
a89ba681 | 103 | pnpi->sizeof_priv = sizeof_priv; |
554c0a3a HG |
104 | RETURN: |
105 | return pnetdev; | |
106 | } | |
107 | ||
fdd1b243 | 108 | void rtw_free_netdev(struct net_device *netdev) |
554c0a3a HG |
109 | { |
110 | struct rtw_netdev_priv_indicator *pnpi; | |
111 | ||
112 | if (!netdev) | |
113 | goto RETURN; | |
114 | ||
115 | pnpi = netdev_priv(netdev); | |
116 | ||
117 | if (!pnpi->priv) | |
118 | goto RETURN; | |
119 | ||
120 | vfree(pnpi->priv); | |
121 | free_netdev(netdev); | |
122 | ||
123 | RETURN: | |
124 | return; | |
125 | } | |
126 | ||
127 | int rtw_change_ifname(struct adapter *padapter, const char *ifname) | |
128 | { | |
129 | struct net_device *pnetdev; | |
130 | struct net_device *cur_pnetdev; | |
131 | struct rereg_nd_name_data *rereg_priv; | |
132 | int ret; | |
133 | ||
134 | if (!padapter) | |
135 | goto error; | |
136 | ||
137 | cur_pnetdev = padapter->pnetdev; | |
138 | rereg_priv = &padapter->rereg_nd_name_priv; | |
139 | ||
140 | /* free the old_pnetdev */ | |
141 | if (rereg_priv->old_pnetdev) { | |
142 | free_netdev(rereg_priv->old_pnetdev); | |
143 | rereg_priv->old_pnetdev = NULL; | |
144 | } | |
145 | ||
146 | if (!rtnl_is_locked()) | |
147 | unregister_netdev(cur_pnetdev); | |
148 | else | |
149 | unregister_netdevice(cur_pnetdev); | |
150 | ||
a89ba681 | 151 | rereg_priv->old_pnetdev = cur_pnetdev; |
554c0a3a HG |
152 | |
153 | pnetdev = rtw_init_netdev(padapter); | |
154 | if (!pnetdev) { | |
155 | ret = -1; | |
156 | goto error; | |
157 | } | |
158 | ||
159 | SET_NETDEV_DEV(pnetdev, dvobj_to_dev(adapter_to_dvobj(padapter))); | |
160 | ||
161 | rtw_init_netdev_name(pnetdev, ifname); | |
162 | ||
163 | memcpy(pnetdev->dev_addr, padapter->eeprompriv.mac_addr, ETH_ALEN); | |
164 | ||
165 | if (!rtnl_is_locked()) | |
166 | ret = register_netdev(pnetdev); | |
167 | else | |
168 | ret = register_netdevice(pnetdev); | |
169 | ||
170 | if (ret != 0) { | |
171 | RT_TRACE(_module_hci_intfs_c_, _drv_err_, ("register_netdev() failed\n")); | |
172 | goto error; | |
173 | } | |
174 | ||
175 | return 0; | |
176 | ||
177 | error: | |
178 | ||
179 | return -1; | |
180 | ||
181 | } | |
182 | ||
554c0a3a HG |
183 | void rtw_buf_free(u8 **buf, u32 *buf_len) |
184 | { | |
554c0a3a HG |
185 | if (!buf || !buf_len) |
186 | return; | |
187 | ||
554c0a3a HG |
188 | if (*buf) { |
189 | *buf_len = 0; | |
190 | kfree(*buf); | |
191 | *buf = NULL; | |
192 | } | |
193 | } | |
194 | ||
195 | void rtw_buf_update(u8 **buf, u32 *buf_len, u8 *src, u32 src_len) | |
196 | { | |
197 | u32 ori_len = 0, dup_len = 0; | |
198 | u8 *ori = NULL; | |
199 | u8 *dup = NULL; | |
200 | ||
201 | if (!buf || !buf_len) | |
202 | return; | |
203 | ||
204 | if (!src || !src_len) | |
205 | goto keep_ori; | |
206 | ||
207 | /* duplicate src */ | |
208 | dup = rtw_malloc(src_len); | |
209 | if (dup) { | |
210 | dup_len = src_len; | |
211 | memcpy(dup, src, dup_len); | |
212 | } | |
213 | ||
214 | keep_ori: | |
215 | ori = *buf; | |
216 | ori_len = *buf_len; | |
217 | ||
218 | /* replace buf with dup */ | |
219 | *buf_len = 0; | |
220 | *buf = dup; | |
221 | *buf_len = dup_len; | |
222 | ||
223 | /* free ori */ | |
224 | if (ori && ori_len > 0) | |
225 | kfree(ori); | |
226 | } | |
227 | ||
228 | ||
229 | /** | |
230 | * rtw_cbuf_full - test if cbuf is full | |
231 | * @cbuf: pointer of struct rtw_cbuf | |
232 | * | |
233 | * Returns: true if cbuf is full | |
234 | */ | |
235 | inline bool rtw_cbuf_full(struct rtw_cbuf *cbuf) | |
236 | { | |
a89ba681 | 237 | return (cbuf->write == cbuf->read - 1) ? true : false; |
554c0a3a HG |
238 | } |
239 | ||
240 | /** | |
241 | * rtw_cbuf_empty - test if cbuf is empty | |
242 | * @cbuf: pointer of struct rtw_cbuf | |
243 | * | |
244 | * Returns: true if cbuf is empty | |
245 | */ | |
246 | inline bool rtw_cbuf_empty(struct rtw_cbuf *cbuf) | |
247 | { | |
a89ba681 | 248 | return (cbuf->write == cbuf->read) ? true : false; |
554c0a3a HG |
249 | } |
250 | ||
251 | /** | |
252 | * rtw_cbuf_push - push a pointer into cbuf | |
253 | * @cbuf: pointer of struct rtw_cbuf | |
254 | * @buf: pointer to push in | |
255 | * | |
256 | * Lock free operation, be careful of the use scheme | |
257 | * Returns: true push success | |
258 | */ | |
259 | bool rtw_cbuf_push(struct rtw_cbuf *cbuf, void *buf) | |
260 | { | |
261 | if (rtw_cbuf_full(cbuf)) | |
262 | return _FAIL; | |
263 | ||
264 | DBG_871X("%s on %u\n", __func__, cbuf->write); | |
265 | cbuf->bufs[cbuf->write] = buf; | |
a89ba681 | 266 | cbuf->write = (cbuf->write + 1) % cbuf->size; |
554c0a3a HG |
267 | |
268 | return _SUCCESS; | |
269 | } | |
270 | ||
271 | /** | |
272 | * rtw_cbuf_pop - pop a pointer from cbuf | |
273 | * @cbuf: pointer of struct rtw_cbuf | |
274 | * | |
275 | * Lock free operation, be careful of the use scheme | |
276 | * Returns: pointer popped out | |
277 | */ | |
278 | void *rtw_cbuf_pop(struct rtw_cbuf *cbuf) | |
279 | { | |
280 | void *buf; | |
281 | if (rtw_cbuf_empty(cbuf)) | |
282 | return NULL; | |
283 | ||
284 | DBG_871X("%s on %u\n", __func__, cbuf->read); | |
285 | buf = cbuf->bufs[cbuf->read]; | |
a89ba681 | 286 | cbuf->read = (cbuf->read + 1) % cbuf->size; |
554c0a3a HG |
287 | |
288 | return buf; | |
289 | } | |
290 | ||
291 | /** | |
292 | * rtw_cbuf_alloc - allocte a rtw_cbuf with given size and do initialization | |
293 | * @size: size of pointer | |
294 | * | |
295 | * Returns: pointer of srtuct rtw_cbuf, NULL for allocation failure | |
296 | */ | |
297 | struct rtw_cbuf *rtw_cbuf_alloc(u32 size) | |
298 | { | |
299 | struct rtw_cbuf *cbuf; | |
300 | ||
2ef2b7c2 | 301 | cbuf = rtw_malloc(sizeof(*cbuf) + sizeof(void *) * size); |
554c0a3a HG |
302 | |
303 | if (cbuf) { | |
304 | cbuf->write = cbuf->read = 0; | |
305 | cbuf->size = size; | |
306 | } | |
307 | ||
308 | return cbuf; | |
309 | } |