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         bool suspended;
  60
  61         struct tasklet_struct tasklet;
  62         struct sk_buff_head skb_queue;
  63
  64         struct sk_buff *tx_skb;
  65         struct work_struct tx_work;
  66 };
  67
  68 enum {
  69         IEEE802154_RX_MSG        = 1,
  70 };
  71
  72 enum ieee802154_sdata_state_bits {
  73         SDATA_STATE_RUNNING,
  74 };
  75
  76 /* Slave interface definition.
  77  *
  78  * Slaves represent typical network interfaces available from userspace.
  79  * Each ieee802154 device/transceiver may have several slaves and able
  80  * to be associated with several networks at the same time.
  81  */
  82 struct ieee802154_sub_if_data {
  83         struct list_head list; /* the ieee802154_priv->slaves list */
  84
  85         struct wpan_dev wpan_dev;
  86
  87         struct ieee802154_local *local;
  88         struct net_device *dev;
  89
  90         unsigned long state;
  91         char name[IFNAMSIZ];
  92
  93         /* protects sec from concurrent access by netlink. access by
  94          * encrypt/decrypt/header_create safe without additional protection.
  95          */
  96         struct mutex sec_mtx;
  97
  98         struct mac802154_llsec sec;
  99 };
 100
 101 /* utility functions/constants */
 102 extern const void *const mac802154_wpan_phy_privid; /*  for wpan_phy privid */
 103
 104 static inline struct ieee802154_local *
 105 hw_to_local(struct ieee802154_hw *hw)
 106 {
 107         return container_of(hw, struct ieee802154_local, hw);
 108 }
 109
 110 static inline struct ieee802154_sub_if_data *
 111 IEEE802154_DEV_TO_SUB_IF(const struct net_device *dev)
 112 {
 113         return netdev_priv(dev);
 114 }
 115
 116 static inline struct ieee802154_sub_if_data *
 117 IEEE802154_WPAN_DEV_TO_SUB_IF(struct wpan_dev *wpan_dev)
 118 {
 119         return container_of(wpan_dev, struct ieee802154_sub_if_data, wpan_dev);
 120 }
 121
 122 static inline bool
 123 ieee802154_sdata_running(struct ieee802154_sub_if_data *sdata)
 124 {
 125         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
 126 }
 127
 128 extern struct ieee802154_mlme_ops mac802154_mlme_wpan;
 129
 130 void ieee802154_rx(struct ieee802154_local *local, struct sk_buff *skb);
 131 void ieee802154_xmit_worker(struct work_struct *work);
 132 netdev_tx_t
 133 ieee802154_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
 134 netdev_tx_t
 135 ieee802154_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
 136 enum hrtimer_restart ieee802154_xmit_ifs_timer(struct hrtimer *timer);
 137
 138 /* MIB callbacks */
 139 void mac802154_dev_set_page_channel(struct net_device *dev, u8 page, u8 chan);
 140
 141 int mac802154_get_params(struct net_device *dev,
 142                          struct ieee802154_llsec_params *params);
 143 int mac802154_set_params(struct net_device *dev,
 144                          const struct ieee802154_llsec_params *params,
 145                          int changed);
 146
 147 int mac802154_add_key(struct net_device *dev,
 148                       const struct ieee802154_llsec_key_id *id,
 149                       const struct ieee802154_llsec_key *key);
 150 int mac802154_del_key(struct net_device *dev,
 151                       const struct ieee802154_llsec_key_id *id);
 152
 153 int mac802154_add_dev(struct net_device *dev,
 154                       const struct ieee802154_llsec_device *llsec_dev);
 155 int mac802154_del_dev(struct net_device *dev, __le64 dev_addr);
 156
 157 int mac802154_add_devkey(struct net_device *dev,
 158                          __le64 device_addr,
 159                          const struct ieee802154_llsec_device_key *key);
 160 int mac802154_del_devkey(struct net_device *dev,
 161                          __le64 device_addr,
 162                          const struct ieee802154_llsec_device_key *key);
 163
 164 int mac802154_add_seclevel(struct net_device *dev,
 165                            const struct ieee802154_llsec_seclevel *sl);
 166 int mac802154_del_seclevel(struct net_device *dev,
 167                            const struct ieee802154_llsec_seclevel *sl);
 168
 169 void mac802154_lock_table(struct net_device *dev);
 170 void mac802154_get_table(struct net_device *dev,
 171                          struct ieee802154_llsec_table **t);
 172 void mac802154_unlock_table(struct net_device *dev);
 173
 174 int mac802154_wpan_update_llsec(struct net_device *dev);
 175
 176 /* interface handling */
 177 int ieee802154_iface_init(void);
 178 void ieee802154_iface_exit(void);
 179 void ieee802154_if_remove(struct ieee802154_sub_if_data *sdata);
 180 struct net_device *
 181 ieee802154_if_add(struct ieee802154_local *local, const char *name,
 182                   unsigned char name_assign_type, enum nl802154_iftype type,
 183                   __le64 extended_addr);
 184 void ieee802154_remove_interfaces(struct ieee802154_local *local);
 185 void ieee802154_stop_device(struct ieee802154_local *local);
 186
 187 #endif /* __IEEE802154_I_H */