LXR linux/net/mac802154/ieee802154

   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 */
  32struct 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
  68enum {
  69        IEEE802154_RX_MSG        = 1,
  70};
  71
  72enum 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 */
  82struct 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 */
 102extern const void *const mac802154_wpan_phy_privid; /*  for wpan_phy privid */
 103
 104static inline struct ieee802154_local *
 105hw_to_local(struct ieee802154_hw *hw)
 106{
 107        return container_of(hw, struct ieee802154_local, hw);
 108}
 109
 110static inline struct ieee802154_sub_if_data *
 111IEEE802154_DEV_TO_SUB_IF(const struct net_device *dev)
 112{
 113        return netdev_priv(dev);
 114}
 115
 116static inline struct ieee802154_sub_if_data *
 117IEEE802154_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
 122static inline bool
 123ieee802154_sdata_running(struct ieee802154_sub_if_data *sdata)
 124{
 125        return test_bit(SDATA_STATE_RUNNING, &sdata->state);
 126}
 127
 128extern struct ieee802154_mlme_ops mac802154_mlme_wpan;
 129
 130void ieee802154_rx(struct ieee802154_local *local, struct sk_buff *skb);
 131void ieee802154_xmit_worker(struct work_struct *work);
 132netdev_tx_t
 133ieee802154_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
 134netdev_tx_t
 135ieee802154_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
 136enum hrtimer_restart ieee802154_xmit_ifs_timer(struct hrtimer *timer);
 137
 138/* MIB callbacks */
 139void mac802154_dev_set_page_channel(struct net_device *dev, u8 page, u8 chan);
 140
 141int mac802154_get_params(struct net_device *dev,
 142                         struct ieee802154_llsec_params *params);
 143int mac802154_set_params(struct net_device *dev,
 144                         const struct ieee802154_llsec_params *params,
 145                         int changed);
 146
 147int mac802154_add_key(struct net_device *dev,
 148                      const struct ieee802154_llsec_key_id *id,
 149                      const struct ieee802154_llsec_key *key);
 150int mac802154_del_key(struct net_device *dev,
 151                      const struct ieee802154_llsec_key_id *id);
 152
 153int mac802154_add_dev(struct net_device *dev,
 154                      const struct ieee802154_llsec_device *llsec_dev);
 155int mac802154_del_dev(struct net_device *dev, __le64 dev_addr);
 156
 157int mac802154_add_devkey(struct net_device *dev,
 158                         __le64 device_addr,
 159                         const struct ieee802154_llsec_device_key *key);
 160int mac802154_del_devkey(struct net_device *dev,
 161                         __le64 device_addr,
 162                         const struct ieee802154_llsec_device_key *key);
 163
 164int mac802154_add_seclevel(struct net_device *dev,
 165                           const struct ieee802154_llsec_seclevel *sl);
 166int mac802154_del_seclevel(struct net_device *dev,
 167                           const struct ieee802154_llsec_seclevel *sl);
 168
 169void mac802154_lock_table(struct net_device *dev);
 170void mac802154_get_table(struct net_device *dev,
 171                         struct ieee802154_llsec_table **t);
 172void mac802154_unlock_table(struct net_device *dev);
 173
 174int mac802154_wpan_update_llsec(struct net_device *dev);
 175
 176/* interface handling */
 177int ieee802154_iface_init(void);
 178void ieee802154_iface_exit(void);
 179void ieee802154_if_remove(struct ieee802154_sub_if_data *sdata);
 180struct net_device *
 181ieee802154_if_add(struct ieee802154_local *local, const char *name,
 182                  enum nl802154_iftype type, __le64 extended_addr);
 183void ieee802154_remove_interfaces(struct ieee802154_local *local);
 184void ieee802154_stop_device(struct ieee802154_local *local);
 185
 186#endif /* __IEEE802154_I_H */
 187