Add the rt linux 4.1.3-rt3 as base
[kvmfornfv.git] / kernel / include / net / cfg802154.h
1 /*
2  * Copyright (C) 2007, 2008, 2009 Siemens AG
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License version 2
6  * as published by the Free Software Foundation.
7  *
8  * This program is distributed in the hope that it will be useful,
9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11  * GNU General Public License for more details.
12  *
13  * Written by:
14  * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
15  */
16
17 #ifndef __NET_CFG802154_H
18 #define __NET_CFG802154_H
19
20 #include <linux/ieee802154.h>
21 #include <linux/netdevice.h>
22 #include <linux/mutex.h>
23 #include <linux/bug.h>
24
25 #include <net/nl802154.h>
26
27 struct wpan_phy;
28 struct wpan_phy_cca;
29
30 struct cfg802154_ops {
31         struct net_device * (*add_virtual_intf_deprecated)(struct wpan_phy *wpan_phy,
32                                                            const char *name,
33                                                            unsigned char name_assign_type,
34                                                            int type);
35         void    (*del_virtual_intf_deprecated)(struct wpan_phy *wpan_phy,
36                                                struct net_device *dev);
37         int     (*add_virtual_intf)(struct wpan_phy *wpan_phy,
38                                     const char *name,
39                                     unsigned char name_assign_type,
40                                     enum nl802154_iftype type,
41                                     __le64 extended_addr);
42         int     (*del_virtual_intf)(struct wpan_phy *wpan_phy,
43                                     struct wpan_dev *wpan_dev);
44         int     (*set_channel)(struct wpan_phy *wpan_phy, u8 page, u8 channel);
45         int     (*set_cca_mode)(struct wpan_phy *wpan_phy,
46                                 const struct wpan_phy_cca *cca);
47         int     (*set_pan_id)(struct wpan_phy *wpan_phy,
48                               struct wpan_dev *wpan_dev, __le16 pan_id);
49         int     (*set_short_addr)(struct wpan_phy *wpan_phy,
50                                   struct wpan_dev *wpan_dev, __le16 short_addr);
51         int     (*set_backoff_exponent)(struct wpan_phy *wpan_phy,
52                                         struct wpan_dev *wpan_dev, u8 min_be,
53                                         u8 max_be);
54         int     (*set_max_csma_backoffs)(struct wpan_phy *wpan_phy,
55                                          struct wpan_dev *wpan_dev,
56                                          u8 max_csma_backoffs);
57         int     (*set_max_frame_retries)(struct wpan_phy *wpan_phy,
58                                          struct wpan_dev *wpan_dev,
59                                          s8 max_frame_retries);
60         int     (*set_lbt_mode)(struct wpan_phy *wpan_phy,
61                                 struct wpan_dev *wpan_dev, bool mode);
62 };
63
64 struct wpan_phy_cca {
65         enum nl802154_cca_modes mode;
66         enum nl802154_cca_opts opt;
67 };
68
69 struct wpan_phy {
70         struct mutex pib_lock;
71
72         /* If multiple wpan_phys are registered and you're handed e.g.
73          * a regular netdev with assigned ieee802154_ptr, you won't
74          * know whether it points to a wpan_phy your driver has registered
75          * or not. Assign this to something global to your driver to
76          * help determine whether you own this wpan_phy or not.
77          */
78         const void *privid;
79
80         /*
81          * This is a PIB according to 802.15.4-2011.
82          * We do not provide timing-related variables, as they
83          * aren't used outside of driver
84          */
85         u8 current_channel;
86         u8 current_page;
87         u32 channels_supported[IEEE802154_MAX_PAGE + 1];
88         s8 transmit_power;
89         struct wpan_phy_cca cca;
90
91         __le64 perm_extended_addr;
92
93         s32 cca_ed_level;
94
95         /* PHY depended MAC PIB values */
96
97         /* 802.15.4 acronym: Tdsym in usec */
98         u8 symbol_duration;
99         /* lifs and sifs periods timing */
100         u16 lifs_period;
101         u16 sifs_period;
102
103         struct device dev;
104
105         char priv[0] __aligned(NETDEV_ALIGN);
106 };
107
108 struct wpan_dev {
109         struct wpan_phy *wpan_phy;
110         int iftype;
111
112         /* the remainder of this struct should be private to cfg802154 */
113         struct list_head list;
114         struct net_device *netdev;
115
116         u32 identifier;
117
118         /* MAC PIB */
119         __le16 pan_id;
120         __le16 short_addr;
121         __le64 extended_addr;
122
123         /* MAC BSN field */
124         u8 bsn;
125         /* MAC DSN field */
126         u8 dsn;
127
128         u8 min_be;
129         u8 max_be;
130         u8 csma_retries;
131         s8 frame_retries;
132
133         bool lbt;
134
135         bool promiscuous_mode;
136 };
137
138 #define to_phy(_dev)    container_of(_dev, struct wpan_phy, dev)
139
140 struct wpan_phy *
141 wpan_phy_new(const struct cfg802154_ops *ops, size_t priv_size);
142 static inline void wpan_phy_set_dev(struct wpan_phy *phy, struct device *dev)
143 {
144         phy->dev.parent = dev;
145 }
146
147 int wpan_phy_register(struct wpan_phy *phy);
148 void wpan_phy_unregister(struct wpan_phy *phy);
149 void wpan_phy_free(struct wpan_phy *phy);
150 /* Same semantics as for class_for_each_device */
151 int wpan_phy_for_each(int (*fn)(struct wpan_phy *phy, void *data), void *data);
152
153 static inline void *wpan_phy_priv(struct wpan_phy *phy)
154 {
155         BUG_ON(!phy);
156         return &phy->priv;
157 }
158
159 struct wpan_phy *wpan_phy_find(const char *str);
160
161 static inline void wpan_phy_put(struct wpan_phy *phy)
162 {
163         put_device(&phy->dev);
164 }
165
166 static inline const char *wpan_phy_name(struct wpan_phy *phy)
167 {
168         return dev_name(&phy->dev);
169 }
170
171 #endif /* __NET_CFG802154_H */