net/mac802154/ieee802154_i.h

   1 /*
   2  * Copyright (C) 2007-2012 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  * Pavel Smolenskiy <pavel.smolenskiy@gmail.com>
  15  * Maxim Gorbachyov <maxim.gorbachev@siemens.com>
  16  * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
  17  * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
  18  */
  19 #ifndef __IEEE802154_I_H
  20 #define __IEEE802154_I_H
  21
  22 #include <linux/mutex.h>
  23 #include <linux/hrtimer.h>
  24 #include <net/cfg802154.h>
  25 #include <net/mac802154.h>
  26 #include <net/nl802154.h>
  27 #include <net/ieee802154_netdev.h>
  28
  29 #include "llsec.h"
  30
  31 /* mac802154 device private data */
  32 struct ieee802154_local {
  33         struct ieee802154_hw hw;
  34         const struct ieee802154_ops *ops;
  35
  36         /* ieee802154 phy */
  37         struct wpan_phy *phy;
  38
  39         int open_count;
  40
  41         /* As in mac80211 slaves list is modified:
  42          * 1) under the RTNL
  43          * 2) protected by slaves_mtx;
  44          * 3) in an RCU manner
  45          *
  46          * So atomic readers can use any of this protection methods.
  47          */
  48         struct list_head        interfaces;
  49         struct mutex            iflist_mtx;
  50
  51         /* This one is used for scanning and other jobs not to be interfered
  52          * with serial driver.
  53          */
  54         struct workqueue_struct *workqueue;
  55
  56         struct hrtimer ifs_timer;
  57
  58         bool started;
  59
  60         struct tasklet_struct tasklet;
  61         struct sk_buff_head skb_queue;
  62 };
  63
  64 enum {
  65         IEEE802154_RX_MSG        = 1,
  66 };
  67
  68 enum ieee802154_sdata_state_bits {
  69         SDATA_STATE_RUNNING,
  70 };
  71
  72 /* Slave interface definition.
  73  *
  74  * Slaves represent typical network interfaces available from userspace.
  75  * Each ieee802154 device/transceiver may have several slaves and able
  76  * to be associated with several networks at the same time.
  77  */
  78 struct ieee802154_sub_if_data {
  79         struct list_head list; /* the ieee802154_priv->slaves list */
  80
  81         struct wpan_dev wpan_dev;
  82
  83         struct ieee802154_local *local;
  84         struct net_device *dev;
  85
  86         unsigned long state;
  87         char name[IFNAMSIZ];
  88
  89         /* protects sec from concurrent access by netlink. access by
  90          * encrypt/decrypt/header_create safe without additional protection.
  91          */
  92         struct mutex sec_mtx;
  93
  94         struct mac802154_llsec sec;
  95 };
  96
  97 #define MAC802154_CHAN_NONE             0xff /* No channel is assigned */
  98
  99 /* utility functions/constants */
 100 extern const void *const mac802154_wpan_phy_privid; /*  for wpan_phy privid */
 101
 102 static inline struct ieee802154_local *
 103 hw_to_local(struct ieee802154_hw *hw)
 104 {
 105         return container_of(hw, struct ieee802154_local, hw);
 106 }
 107
 108 static inline struct ieee802154_sub_if_data *
 109 IEEE802154_DEV_TO_SUB_IF(const struct net_device *dev)
 110 {
 111         return netdev_priv(dev);
 112 }
 113
 114 static inline struct ieee802154_sub_if_data *
 115 IEEE802154_WPAN_DEV_TO_SUB_IF(struct wpan_dev *wpan_dev)
 116 {
 117         return container_of(wpan_dev, struct ieee802154_sub_if_data, wpan_dev);
 118 }
 119
 120 static inline bool
 121 ieee802154_sdata_running(struct ieee802154_sub_if_data *sdata)
 122 {
 123         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
 124 }
 125
 126 extern struct ieee802154_mlme_ops mac802154_mlme_wpan;
 127
 128 netdev_tx_t
 129 ieee802154_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
 130 netdev_tx_t
 131 ieee802154_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
 132 enum hrtimer_restart ieee802154_xmit_ifs_timer(struct hrtimer *timer);
 133
 134 /* MIB callbacks */
 135 void mac802154_dev_set_page_channel(struct net_device *dev, u8 page, u8 chan);
 136
 137 int mac802154_get_params(struct net_device *dev,
 138                          struct ieee802154_llsec_params *params);
 139 int mac802154_set_params(struct net_device *dev,
 140                          const struct ieee802154_llsec_params *params,
 141                          int changed);
 142
 143 int mac802154_add_key(struct net_device *dev,
 144                       const struct ieee802154_llsec_key_id *id,
 145                       const struct ieee802154_llsec_key *key);
 146 int mac802154_del_key(struct net_device *dev,
 147                       const struct ieee802154_llsec_key_id *id);
 148
 149 int mac802154_add_dev(struct net_device *dev,
 150                       const struct ieee802154_llsec_device *llsec_dev);
 151 int mac802154_del_dev(struct net_device *dev, __le64 dev_addr);
 152
 153 int mac802154_add_devkey(struct net_device *dev,
 154                          __le64 device_addr,
 155                          const struct ieee802154_llsec_device_key *key);
 156 int mac802154_del_devkey(struct net_device *dev,
 157                          __le64 device_addr,
 158                          const struct ieee802154_llsec_device_key *key);
 159
 160 int mac802154_add_seclevel(struct net_device *dev,
 161                            const struct ieee802154_llsec_seclevel *sl);
 162 int mac802154_del_seclevel(struct net_device *dev,
 163                            const struct ieee802154_llsec_seclevel *sl);
 164
 165 void mac802154_lock_table(struct net_device *dev);
 166 void mac802154_get_table(struct net_device *dev,
 167                          struct ieee802154_llsec_table **t);
 168 void mac802154_unlock_table(struct net_device *dev);
 169
 170 /* interface handling */
 171 int ieee802154_iface_init(void);
 172 void ieee802154_iface_exit(void);
 173 void ieee802154_if_remove(struct ieee802154_sub_if_data *sdata);
 174 struct net_device *
 175 ieee802154_if_add(struct ieee802154_local *local, const char *name,
 176                   unsigned char name_assign_type, enum nl802154_iftype type,
 177                   __le64 extended_addr);
 178 void ieee802154_remove_interfaces(struct ieee802154_local *local);
 179
 180 #endif /* __IEEE802154_I_H */