1 /*
2 * Linux WiMAX
3 * Internal API for kernel space WiMAX stack
4 *
5 *
6 * Copyright (C) 2007 Intel Corporation <linux-wimax@intel.com>
7 * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License version
11 * 2 as published by the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 * 02110-1301, USA.
22 *
23 *
24 * This header file is for declarations and definitions internal to
25 * the WiMAX stack. For public APIs and documentation, see
26 * include/net/wimax.h and include/linux/wimax.h.
27 */
28
29 #ifndef __WIMAX_INTERNAL_H__
30 #define __WIMAX_INTERNAL_H__
31 #ifdef __KERNEL__
32
33 #include <linux/device.h>
34 #include <net/wimax.h>
35
36
37 /*
38 * Decide if a (locked) device is ready for use
39 *
40 * Before using the device structure, it must be locked
41 * (wimax_dev->mutex). As well, most operations need to call this
42 * function to check if the state is the right one.
43 *
44 * An error value will be returned if the state is not the right
45 * one. In that case, the caller should not attempt to use the device
46 * and just unlock it.
47 */
48 static inline __must_check
49 int wimax_dev_is_ready(struct wimax_dev *wimax_dev)
50 {
51 if (wimax_dev->state == __WIMAX_ST_NULL)
52 return -EINVAL; /* Device is not even registered! */
53 if (wimax_dev->state == WIMAX_ST_DOWN)
54 return -ENOMEDIUM;
55 if (wimax_dev->state == __WIMAX_ST_QUIESCING)
56 return -ESHUTDOWN;
57 return 0;
58 }
59
60
61 static inline
62 void __wimax_state_set(struct wimax_dev *wimax_dev, enum wimax_st state)
63 {
64 wimax_dev->state = state;
65 }
66 extern void __wimax_state_change(struct wimax_dev *, enum wimax_st);
67
68 #ifdef CONFIG_DEBUG_FS
69 extern int wimax_debugfs_add(struct wimax_dev *);
70 extern void wimax_debugfs_rm(struct wimax_dev *);
71 #else
72 static inline int wimax_debugfs_add(struct wimax_dev *wimax_dev)
73 {
74 return 0;
75 }
76 static inline void wimax_debugfs_rm(struct wimax_dev *wimax_dev) {}
77 #endif
78
79 extern void wimax_id_table_add(struct wimax_dev *);
80 extern struct wimax_dev *wimax_dev_get_by_genl_info(struct genl_info *, int);
81 extern void wimax_id_table_rm(struct wimax_dev *);
82 extern void wimax_id_table_release(void);
83
84 extern int wimax_rfkill_add(struct wimax_dev *);
85 extern void wimax_rfkill_rm(struct wimax_dev *);
86
87 extern struct genl_family wimax_gnl_family;
88 extern struct genl_multicast_group wimax_gnl_mcg;
89
90 #endif /* #ifdef __KERNEL__ */
91 #endif /* #ifndef __WIMAX_INTERNAL_H__ */
92
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