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                                                            int type);
  34         void    (*del_virtual_intf_deprecated)(struct wpan_phy *wpan_phy,
  35                                                struct net_device *dev);
  36         int     (*add_virtual_intf)(struct wpan_phy *wpan_phy,
  37                                     const char *name,
  38                                     enum nl802154_iftype type,
  39                                     __le64 extended_addr);
  40         int     (*del_virtual_intf)(struct wpan_phy *wpan_phy,
  41                                     struct wpan_dev *wpan_dev);
  42         int     (*set_channel)(struct wpan_phy *wpan_phy, u8 page, u8 channel);
  43         int     (*set_cca_mode)(struct wpan_phy *wpan_phy,
  44                                 const struct wpan_phy_cca *cca);
  45         int     (*set_pan_id)(struct wpan_phy *wpan_phy,
  46                               struct wpan_dev *wpan_dev, __le16 pan_id);
  47         int     (*set_short_addr)(struct wpan_phy *wpan_phy,
  48                                   struct wpan_dev *wpan_dev, __le16 short_addr);
  49         int     (*set_backoff_exponent)(struct wpan_phy *wpan_phy,
  50                                         struct wpan_dev *wpan_dev, u8 min_be,
  51                                         u8 max_be);
  52         int     (*set_max_csma_backoffs)(struct wpan_phy *wpan_phy,
  53                                          struct wpan_dev *wpan_dev,
  54                                          u8 max_csma_backoffs);
  55         int     (*set_max_frame_retries)(struct wpan_phy *wpan_phy,
  56                                          struct wpan_dev *wpan_dev,
  57                                          s8 max_frame_retries);
  58         int     (*set_lbt_mode)(struct wpan_phy *wpan_phy,
  59                                 struct wpan_dev *wpan_dev, bool mode);
  60 };
  61
  62 struct wpan_phy_cca {
  63         enum nl802154_cca_modes mode;
  64         enum nl802154_cca_opts opt;
  65 };
  66
  67 struct wpan_phy {
  68         struct mutex pib_lock;
  69
  70         /* If multiple wpan_phys are registered and you're handed e.g.
  71          * a regular netdev with assigned ieee802154_ptr, you won't
  72          * know whether it points to a wpan_phy your driver has registered
  73          * or not. Assign this to something global to your driver to
  74          * help determine whether you own this wpan_phy or not.
  75          */
  76         const void *privid;
  77
  78         /*
  79          * This is a PIB according to 802.15.4-2011.
  80          * We do not provide timing-related variables, as they
  81          * aren't used outside of driver
  82          */
  83         u8 current_channel;
  84         u8 current_page;
  85         u32 channels_supported[IEEE802154_MAX_PAGE + 1];
  86         s8 transmit_power;
  87         struct wpan_phy_cca cca;
  88
  89         __le64 perm_extended_addr;
  90
  91         s32 cca_ed_level;
  92
  93         /* PHY depended MAC PIB values */
  94
  95         /* 802.15.4 acronym: Tdsym in usec */
  96         u8 symbol_duration;
  97         /* lifs and sifs periods timing */
  98         u16 lifs_period;
  99         u16 sifs_period;
 100
 101         struct device dev;
 102
 103         char priv[0] __aligned(NETDEV_ALIGN);
 104 };
 105
 106 struct wpan_dev {
 107         struct wpan_phy *wpan_phy;
 108         int iftype;
 109
 110         /* the remainder of this struct should be private to cfg802154 */
 111         struct list_head list;
 112         struct net_device *netdev;
 113
 114         u32 identifier;
 115
 116         /* MAC PIB */
 117         __le16 pan_id;
 118         __le16 short_addr;
 119         __le64 extended_addr;
 120
 121         /* MAC BSN field */
 122         u8 bsn;
 123         /* MAC DSN field */
 124         u8 dsn;
 125
 126         u8 min_be;
 127         u8 max_be;
 128         u8 csma_retries;
 129         s8 frame_retries;
 130
 131         bool lbt;
 132
 133         bool promiscuous_mode;
 134 };
 135
 136 #define to_phy(_dev)    container_of(_dev, struct wpan_phy, dev)
 137
 138 struct wpan_phy *
 139 wpan_phy_new(const struct cfg802154_ops *ops, size_t priv_size);
 140 static inline void wpan_phy_set_dev(struct wpan_phy *phy, struct device *dev)
 141 {
 142         phy->dev.parent = dev;
 143 }
 144
 145 int wpan_phy_register(struct wpan_phy *phy);
 146 void wpan_phy_unregister(struct wpan_phy *phy);
 147 void wpan_phy_free(struct wpan_phy *phy);
 148 /* Same semantics as for class_for_each_device */
 149 int wpan_phy_for_each(int (*fn)(struct wpan_phy *phy, void *data), void *data);
 150
 151 static inline void *wpan_phy_priv(struct wpan_phy *phy)
 152 {
 153         BUG_ON(!phy);
 154         return &phy->priv;
 155 }
 156
 157 struct wpan_phy *wpan_phy_find(const char *str);
 158
 159 static inline void wpan_phy_put(struct wpan_phy *phy)
 160 {
 161         put_device(&phy->dev);
 162 }
 163
 164 static inline const char *wpan_phy_name(struct wpan_phy *phy)
 165 {
 166         return dev_name(&phy->dev);
 167 }
 168
 169 #endif /* __NET_CFG802154_H */