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60fa9ca6 IPG |
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__ */ |