1 // SPDX-License-Identifier: GPL-2.0
2 /******************************************************************************
4 * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
6 ******************************************************************************/
11 * Translate the OS dependent @param error_code to OS independent RTW_STATUS_CODE
12 * @return: one of RTW_STATUS_CODE
14 inline int RTW_STATUS_CODE(int error_code)
21 void *_rtw_malloc(u32 sz)
23 return kmalloc(sz, in_interrupt() ? GFP_ATOMIC : GFP_KERNEL);
26 void *_rtw_zmalloc(u32 sz)
28 void *pbuf = _rtw_malloc(sz);
36 inline struct sk_buff *_rtw_skb_alloc(u32 sz)
38 return __dev_alloc_skb(sz, in_interrupt() ? GFP_ATOMIC : GFP_KERNEL);
41 inline struct sk_buff *_rtw_skb_copy(const struct sk_buff *skb)
43 return skb_copy(skb, in_interrupt() ? GFP_ATOMIC : GFP_KERNEL);
46 inline int _rtw_netif_rx(struct net_device *ndev, struct sk_buff *skb)
52 struct net_device *rtw_alloc_etherdev_with_old_priv(int sizeof_priv, void *old_priv)
54 struct net_device *pnetdev;
55 struct rtw_netdev_priv_indicator *pnpi;
57 pnetdev = alloc_etherdev_mq(sizeof(struct rtw_netdev_priv_indicator), 4);
61 pnpi = netdev_priv(pnetdev);
62 pnpi->priv = old_priv;
63 pnpi->sizeof_priv = sizeof_priv;
69 struct net_device *rtw_alloc_etherdev(int sizeof_priv)
71 struct net_device *pnetdev;
72 struct rtw_netdev_priv_indicator *pnpi;
74 pnetdev = alloc_etherdev_mq(sizeof(struct rtw_netdev_priv_indicator), 4);
78 pnpi = netdev_priv(pnetdev);
80 pnpi->priv = vzalloc(sizeof_priv);
87 pnpi->sizeof_priv = sizeof_priv;
92 void rtw_free_netdev(struct net_device *netdev)
94 struct rtw_netdev_priv_indicator *pnpi;
99 pnpi = netdev_priv(netdev);
111 int rtw_change_ifname(struct adapter *padapter, const char *ifname)
113 struct net_device *pnetdev;
114 struct net_device *cur_pnetdev;
115 struct rereg_nd_name_data *rereg_priv;
121 cur_pnetdev = padapter->pnetdev;
122 rereg_priv = &padapter->rereg_nd_name_priv;
124 /* free the old_pnetdev */
125 if (rereg_priv->old_pnetdev) {
126 free_netdev(rereg_priv->old_pnetdev);
127 rereg_priv->old_pnetdev = NULL;
130 if (!rtnl_is_locked())
131 unregister_netdev(cur_pnetdev);
133 unregister_netdevice(cur_pnetdev);
135 rereg_priv->old_pnetdev = cur_pnetdev;
137 pnetdev = rtw_init_netdev(padapter);
141 SET_NETDEV_DEV(pnetdev, dvobj_to_dev(adapter_to_dvobj(padapter)));
143 rtw_init_netdev_name(pnetdev, ifname);
145 eth_hw_addr_set(pnetdev, padapter->eeprompriv.mac_addr);
147 if (!rtnl_is_locked())
148 ret = register_netdev(pnetdev);
150 ret = register_netdevice(pnetdev);
161 void rtw_buf_free(u8 **buf, u32 *buf_len)
163 if (!buf || !buf_len)
173 void rtw_buf_update(u8 **buf, u32 *buf_len, u8 *src, u32 src_len)
175 u32 ori_len = 0, dup_len = 0;
179 if (!buf || !buf_len)
182 if (!src || !src_len)
186 dup = rtw_malloc(src_len);
189 memcpy(dup, src, dup_len);
196 /* replace buf with dup */
202 if (ori && ori_len > 0)
208 * rtw_cbuf_full - test if cbuf is full
209 * @cbuf: pointer of struct rtw_cbuf
211 * Returns: true if cbuf is full
213 inline bool rtw_cbuf_full(struct rtw_cbuf *cbuf)
215 return (cbuf->write == cbuf->read - 1) ? true : false;
219 * rtw_cbuf_empty - test if cbuf is empty
220 * @cbuf: pointer of struct rtw_cbuf
222 * Returns: true if cbuf is empty
224 inline bool rtw_cbuf_empty(struct rtw_cbuf *cbuf)
226 return (cbuf->write == cbuf->read) ? true : false;
230 * rtw_cbuf_push - push a pointer into cbuf
231 * @cbuf: pointer of struct rtw_cbuf
232 * @buf: pointer to push in
234 * Lock free operation, be careful of the use scheme
235 * Returns: true push success
237 bool rtw_cbuf_push(struct rtw_cbuf *cbuf, void *buf)
239 if (rtw_cbuf_full(cbuf))
242 cbuf->bufs[cbuf->write] = buf;
243 cbuf->write = (cbuf->write + 1) % cbuf->size;
249 * rtw_cbuf_pop - pop a pointer from cbuf
250 * @cbuf: pointer of struct rtw_cbuf
252 * Lock free operation, be careful of the use scheme
253 * Returns: pointer popped out
255 void *rtw_cbuf_pop(struct rtw_cbuf *cbuf)
258 if (rtw_cbuf_empty(cbuf))
261 buf = cbuf->bufs[cbuf->read];
262 cbuf->read = (cbuf->read + 1) % cbuf->size;
268 * rtw_cbuf_alloc - allocate a rtw_cbuf with given size and do initialization
269 * @size: size of pointer
271 * Returns: pointer of srtuct rtw_cbuf, NULL for allocation failure
273 struct rtw_cbuf *rtw_cbuf_alloc(u32 size)
275 struct rtw_cbuf *cbuf;
277 cbuf = rtw_malloc(struct_size(cbuf, bufs, size));
280 cbuf->write = cbuf->read = 0;