LXR linux/net/mac802154/ieee802154

   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 */
  25struct 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
  61enum {
  62        IEEE802154_RX_MSG        = 1,
  63};
  64
  65enum 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 */
  75struct 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 */
  95extern const void *const mac802154_wpan_phy_privid; /*  for wpan_phy privid */
  96
  97static inline struct ieee802154_local *
  98hw_to_local(struct ieee802154_hw *hw)
  99{
 100        return container_of(hw, struct ieee802154_local, hw);
 101}
 102
 103static inline struct ieee802154_sub_if_data *
 104IEEE802154_DEV_TO_SUB_IF(const struct net_device *dev)
 105{
 106        return netdev_priv(dev);
 107}
 108
 109static inline struct ieee802154_sub_if_data *
 110IEEE802154_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
 115static inline bool
 116ieee802154_sdata_running(struct ieee802154_sub_if_data *sdata)
 117{
 118        return test_bit(SDATA_STATE_RUNNING, &sdata->state);
 119}
 120
 121extern struct ieee802154_mlme_ops mac802154_mlme_wpan;
 122
 123void ieee802154_rx(struct ieee802154_local *local, struct sk_buff *skb);
 124void ieee802154_xmit_worker(struct work_struct *work);
 125netdev_tx_t
 126ieee802154_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
 127netdev_tx_t
 128ieee802154_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
 129enum hrtimer_restart ieee802154_xmit_ifs_timer(struct hrtimer *timer);
 130
 131/* MIB callbacks */
 132void mac802154_dev_set_page_channel(struct net_device *dev, u8 page, u8 chan);
 133
 134int mac802154_get_params(struct net_device *dev,
 135                         struct ieee802154_llsec_params *params);
 136int mac802154_set_params(struct net_device *dev,
 137                         const struct ieee802154_llsec_params *params,
 138                         int changed);
 139
 140int mac802154_add_key(struct net_device *dev,
 141                      const struct ieee802154_llsec_key_id *id,
 142                      const struct ieee802154_llsec_key *key);
 143int mac802154_del_key(struct net_device *dev,
 144                      const struct ieee802154_llsec_key_id *id);
 145
 146int mac802154_add_dev(struct net_device *dev,
 147                      const struct ieee802154_llsec_device *llsec_dev);
 148int mac802154_del_dev(struct net_device *dev, __le64 dev_addr);
 149
 150int mac802154_add_devkey(struct net_device *dev,
 151                         __le64 device_addr,
 152                         const struct ieee802154_llsec_device_key *key);
 153int mac802154_del_devkey(struct net_device *dev,
 154                         __le64 device_addr,
 155                         const struct ieee802154_llsec_device_key *key);
 156
 157int mac802154_add_seclevel(struct net_device *dev,
 158                           const struct ieee802154_llsec_seclevel *sl);
 159int mac802154_del_seclevel(struct net_device *dev,
 160                           const struct ieee802154_llsec_seclevel *sl);
 161
 162void mac802154_lock_table(struct net_device *dev);
 163void mac802154_get_table(struct net_device *dev,
 164                         struct ieee802154_llsec_table **t);
 165void mac802154_unlock_table(struct net_device *dev);
 166
 167int mac802154_wpan_update_llsec(struct net_device *dev);
 168
 169/* interface handling */
 170int ieee802154_iface_init(void);
 171void ieee802154_iface_exit(void);
 172void ieee802154_if_remove(struct ieee802154_sub_if_data *sdata);
 173struct net_device *
 174ieee802154_if_add(struct ieee802154_local *local, const char *name,
 175                  unsigned char name_assign_type, enum nl802154_iftype type,
 176                  __le64 extended_addr);
 177void ieee802154_remove_interfaces(struct ieee802154_local *local);
 178void ieee802154_stop_device(struct ieee802154_local *local);
 179
 180#endif /* __IEEE802154_I_H */
 181