net/mac802154/ieee802154_i.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (C) 2007-2012 Siemens AG
   4  *
   5  * Written by:
   6  * Pavel Smolenskiy <pavel.smolenskiy@gmail.com>
   7  * Maxim Gorbachyov <maxim.gorbachev@siemens.com>
   8  * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
   9  * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
  10  */
  11 #ifndef __IEEE802154_I_H
  12 #define __IEEE802154_I_H
  13
  14 #include <linux/interrupt.h>
  15 #include <linux/mutex.h>
  16 #include <linux/hrtimer.h>
  17 #include <net/cfg802154.h>
  18 #include <net/mac802154.h>
  19 #include <net/nl802154.h>
  20 #include <net/ieee802154_netdev.h>
  21
  22 #include "llsec.h"
  23
  24 /* mac802154 device private data */
  25 struct ieee802154_local {
  26         struct ieee802154_hw hw;
  27         const struct ieee802154_ops *ops;
  28
  29         /* ieee802154 phy */
  30         struct wpan_phy *phy;
  31
  32         int open_count;
  33
  34         /* As in mac80211 slaves list is modified:
  35          * 1) under the RTNL
  36          * 2) protected by slaves_mtx;
  37          * 3) in an RCU manner
  38          *
  39          * So atomic readers can use any of this protection methods.
  40          */
  41         struct list_head        interfaces;
  42         struct mutex            iflist_mtx;
  43
  44         /* This one is used for scanning and other jobs not to be interfered
  45          * with serial driver.
  46          */
  47         struct workqueue_struct *workqueue;
  48
  49         struct hrtimer ifs_timer;
  50
  51         bool started;
  52         bool suspended;
  53
  54         struct tasklet_struct tasklet;
  55         struct sk_buff_head skb_queue;
  56
  57         struct sk_buff *tx_skb;
  58         struct work_struct tx_work;
  59 };
  60
  61 enum {
  62         IEEE802154_RX_MSG        = 1,
  63 };
  64
  65 enum ieee802154_sdata_state_bits {
  66         SDATA_STATE_RUNNING,
  67 };
  68
  69 /* Slave interface definition.
  70  *
  71  * Slaves represent typical network interfaces available from userspace.
  72  * Each ieee802154 device/transceiver may have several slaves and able
  73  * to be associated with several networks at the same time.
  74  */
  75 struct ieee802154_sub_if_data {
  76         struct list_head list; /* the ieee802154_priv->slaves list */
  77
  78         struct wpan_dev wpan_dev;
  79
  80         struct ieee802154_local *local;
  81         struct net_device *dev;
  82
  83         unsigned long state;
  84         char name[IFNAMSIZ];
  85
  86         /* protects sec from concurrent access by netlink. access by
  87          * encrypt/decrypt/header_create safe without additional protection.
  88          */
  89         struct mutex sec_mtx;
  90
  91         struct mac802154_llsec sec;
  92 };
  93
  94 /* utility functions/constants */
  95 extern const void *const mac802154_wpan_phy_privid; /*  for wpan_phy privid */
  96
  97 static inline struct ieee802154_local *
  98 hw_to_local(struct ieee802154_hw *hw)
  99 {
 100         return container_of(hw, struct ieee802154_local, hw);
 101 }
 102
 103 static inline struct ieee802154_sub_if_data *
 104 IEEE802154_DEV_TO_SUB_IF(const struct net_device *dev)
 105 {
 106         return netdev_priv(dev);
 107 }
 108
 109 static inline struct ieee802154_sub_if_data *
 110 IEEE802154_WPAN_DEV_TO_SUB_IF(struct wpan_dev *wpan_dev)
 111 {
 112         return container_of(wpan_dev, struct ieee802154_sub_if_data, wpan_dev);
 113 }
 114
 115 static inline bool
 116 ieee802154_sdata_running(struct ieee802154_sub_if_data *sdata)
 117 {
 118         return test_bit(SDATA_STATE_RUNNING, &sdata->state);
 119 }
 120
 121 extern struct ieee802154_mlme_ops mac802154_mlme_wpan;
 122
 123 void ieee802154_rx(struct ieee802154_local *local, struct sk_buff *skb);
 124 void ieee802154_xmit_worker(struct work_struct *work);
 125 netdev_tx_t
 126 ieee802154_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
 127 netdev_tx_t
 128 ieee802154_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
 129 enum hrtimer_restart ieee802154_xmit_ifs_timer(struct hrtimer *timer);
 130
 131 /* MIB callbacks */
 132 void mac802154_dev_set_page_channel(struct net_device *dev, u8 page, u8 chan);
 133
 134 int mac802154_get_params(struct net_device *dev,
 135                          struct ieee802154_llsec_params *params);
 136 int mac802154_set_params(struct net_device *dev,
 137                          const struct ieee802154_llsec_params *params,
 138                          int changed);
 139
 140 int mac802154_add_key(struct net_device *dev,
 141                       const struct ieee802154_llsec_key_id *id,
 142                       const struct ieee802154_llsec_key *key);
 143 int mac802154_del_key(struct net_device *dev,
 144                       const struct ieee802154_llsec_key_id *id);
 145
 146 int mac802154_add_dev(struct net_device *dev,
 147                       const struct ieee802154_llsec_device *llsec_dev);
 148 int mac802154_del_dev(struct net_device *dev, __le64 dev_addr);
 149
 150 int mac802154_add_devkey(struct net_device *dev,
 151                          __le64 device_addr,
 152                          const struct ieee802154_llsec_device_key *key);
 153 int mac802154_del_devkey(struct net_device *dev,
 154                          __le64 device_addr,
 155                          const struct ieee802154_llsec_device_key *key);
 156
 157 int mac802154_add_seclevel(struct net_device *dev,
 158                            const struct ieee802154_llsec_seclevel *sl);
 159 int mac802154_del_seclevel(struct net_device *dev,
 160                            const struct ieee802154_llsec_seclevel *sl);
 161
 162 void mac802154_lock_table(struct net_device *dev);
 163 void mac802154_get_table(struct net_device *dev,
 164                          struct ieee802154_llsec_table **t);
 165 void mac802154_unlock_table(struct net_device *dev);
 166
 167 int mac802154_wpan_update_llsec(struct net_device *dev);
 168
 169 /* interface handling */
 170 int ieee802154_iface_init(void);
 171 void ieee802154_iface_exit(void);
 172 void ieee802154_if_remove(struct ieee802154_sub_if_data *sdata);
 173 struct net_device *
 174 ieee802154_if_add(struct ieee802154_local *local, const char *name,
 175                   unsigned char name_assign_type, enum nl802154_iftype type,
 176                   __le64 extended_addr);
 177 void ieee802154_remove_interfaces(struct ieee802154_local *local);
 178 void ieee802154_stop_device(struct ieee802154_local *local);
 179
 180 #endif /* __IEEE802154_I_H */