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/interrupt.h>
  23 #include <linux/mutex.h>
  24 #include <linux/hrtimer.h>
  25 #include <net/cfg802154.h>
  26 #include <net/mac802154.h>
  27 #include <net/nl802154.h>
  28 #include <net/ieee802154_netdev.h>
  29
  30 #include "llsec.h"
  31
  32 /* mac802154 device private data */
  33 struct ieee802154_local {
  34         struct ieee802154_hw hw;
  35         const struct ieee802154_ops *ops;
  36
  37         /* ieee802154 phy */
  38         struct wpan_phy *phy;
  39
  40         int open_count;
  41
  42         /* As in mac80211 slaves list is modified:
  43          * 1) under the RTNL
  44          * 2) protected by slaves_mtx;
  45          * 3) in an RCU manner
  46          *
  47          * So atomic readers can use any of this protection methods.
  48          */
  49         struct list_head        interfaces;
  50         struct mutex            iflist_mtx;
  51
  52         /* This one is used for scanning and other jobs not to be interfered
  53          * with serial driver.
  54          */
  55         struct workqueue_struct *workqueue;
  56
  57         struct hrtimer ifs_timer;
  58
  59         bool started;
  60         bool suspended;
  61
  62         struct tasklet_struct tasklet;
  63         struct sk_buff_head skb_queue;
  64
  65         struct sk_buff *tx_skb;
  66         struct work_struct tx_work;
  67 };
  68
  69 enum {
  70         IEEE802154_RX_MSG        = 1,
  71 };
  72
  73 enum ieee802154_sdata_state_bits {
  74         SDATA_STATE_RUNNING,
  75 };
  76
  77 /* Slave interface definition.
  78  *
  79  * Slaves represent typical network interfaces available from userspace.
  80  * Each ieee802154 device/transceiver may have several slaves and able
  81  * to be associated with several networks at the same time.
  82  */
  83 struct ieee802154_sub_if_data {
  84         struct list_head list; /* the ieee802154_priv->slaves list */
  85
  86         struct wpan_dev wpan_dev;
  87
  88         struct ieee802154_local *local;
  89         struct net_device *dev;
  90
  91         unsigned long state;
  92         char name[IFNAMSIZ];
  93
  94         /* protects sec from concurrent access by netlink. access by
  95          * encrypt/decrypt/header_create safe without additional protection.
  96          */
  97         struct mutex sec_mtx;
  98
  99         struct mac802154_llsec sec;
 100 };
 101
 102 /* utility functions/constants */
 103 extern const void *const mac802154_wpan_phy_privid; /*  for wpan_phy privid */
 104
 105 static inline struct ieee802154_local *
 106 hw_to_local(struct ieee802154_hw *hw)
 107 {
 108         return container_of(hw, struct ieee802154_local, hw);
 109 }
 110
 111 static inline struct ieee802154_sub_if_data *
 112 IEEE802154_DEV_TO_SUB_IF(const struct net_device *dev)
 113 {
 114         return netdev_priv(dev);
 115 }
 116
 117 static inline struct ieee802154_sub_if_data *
 118 IEEE802154_WPAN_DEV_TO_SUB_IF(struct wpan_dev *wpan_dev)
 119 {
 120         return container_of(wpan_dev, struct ieee802154_sub_if_data, wpan_dev);
 121 }
 122
 123 static inline bool
 124 ieee802154_sdata_running(struct ieee802154_sub_if_data *sdata)
 125 {
 126         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
 127 }
 128
 129 extern struct ieee802154_mlme_ops mac802154_mlme_wpan;
 130
 131 void ieee802154_rx(struct ieee802154_local *local, struct sk_buff *skb);
 132 void ieee802154_xmit_worker(struct work_struct *work);
 133 netdev_tx_t
 134 ieee802154_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
 135 netdev_tx_t
 136 ieee802154_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
 137 enum hrtimer_restart ieee802154_xmit_ifs_timer(struct hrtimer *timer);
 138
 139 /* MIB callbacks */
 140 void mac802154_dev_set_page_channel(struct net_device *dev, u8 page, u8 chan);
 141
 142 int mac802154_get_params(struct net_device *dev,
 143                          struct ieee802154_llsec_params *params);
 144 int mac802154_set_params(struct net_device *dev,
 145                          const struct ieee802154_llsec_params *params,
 146                          int changed);
 147
 148 int mac802154_add_key(struct net_device *dev,
 149                       const struct ieee802154_llsec_key_id *id,
 150                       const struct ieee802154_llsec_key *key);
 151 int mac802154_del_key(struct net_device *dev,
 152                       const struct ieee802154_llsec_key_id *id);
 153
 154 int mac802154_add_dev(struct net_device *dev,
 155                       const struct ieee802154_llsec_device *llsec_dev);
 156 int mac802154_del_dev(struct net_device *dev, __le64 dev_addr);
 157
 158 int mac802154_add_devkey(struct net_device *dev,
 159                          __le64 device_addr,
 160                          const struct ieee802154_llsec_device_key *key);
 161 int mac802154_del_devkey(struct net_device *dev,
 162                          __le64 device_addr,
 163                          const struct ieee802154_llsec_device_key *key);
 164
 165 int mac802154_add_seclevel(struct net_device *dev,
 166                            const struct ieee802154_llsec_seclevel *sl);
 167 int mac802154_del_seclevel(struct net_device *dev,
 168                            const struct ieee802154_llsec_seclevel *sl);
 169
 170 void mac802154_lock_table(struct net_device *dev);
 171 void mac802154_get_table(struct net_device *dev,
 172                          struct ieee802154_llsec_table **t);
 173 void mac802154_unlock_table(struct net_device *dev);
 174
 175 int mac802154_wpan_update_llsec(struct net_device *dev);
 176
 177 /* interface handling */
 178 int ieee802154_iface_init(void);
 179 void ieee802154_iface_exit(void);
 180 void ieee802154_if_remove(struct ieee802154_sub_if_data *sdata);
 181 struct net_device *
 182 ieee802154_if_add(struct ieee802154_local *local, const char *name,
 183                   unsigned char name_assign_type, enum nl802154_iftype type,
 184                   __le64 extended_addr);
 185 void ieee802154_remove_interfaces(struct ieee802154_local *local);
 186 void ieee802154_stop_device(struct ieee802154_local *local);
 187
 188 #endif /* __IEEE802154_I_H */