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/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 */
  33struct 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
  69enum {
  70        IEEE802154_RX_MSG        = 1,
  71};
  72
  73enum 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 */
  83struct 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 */
 103extern const void *const mac802154_wpan_phy_privid; /*  for wpan_phy privid */
 104
 105static inline struct ieee802154_local *
 106hw_to_local(struct ieee802154_hw *hw)
 107{
 108        return container_of(hw, struct ieee802154_local, hw);
 109}
 110
 111static inline struct ieee802154_sub_if_data *
 112IEEE802154_DEV_TO_SUB_IF(const struct net_device *dev)
 113{
 114        return netdev_priv(dev);
 115}
 116
 117static inline struct ieee802154_sub_if_data *
 118IEEE802154_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
 123static inline bool
 124ieee802154_sdata_running(struct ieee802154_sub_if_data *sdata)
 125{
 126        return test_bit(SDATA_STATE_RUNNING, &sdata->state);
 127}
 128
 129extern struct ieee802154_mlme_ops mac802154_mlme_wpan;
 130
 131void ieee802154_rx(struct ieee802154_local *local, struct sk_buff *skb);
 132void ieee802154_xmit_worker(struct work_struct *work);
 133netdev_tx_t
 134ieee802154_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
 135netdev_tx_t
 136ieee802154_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);
 137enum hrtimer_restart ieee802154_xmit_ifs_timer(struct hrtimer *timer);
 138
 139/* MIB callbacks */
 140void mac802154_dev_set_page_channel(struct net_device *dev, u8 page, u8 chan);
 141
 142int mac802154_get_params(struct net_device *dev,
 143                         struct ieee802154_llsec_params *params);
 144int mac802154_set_params(struct net_device *dev,
 145                         const struct ieee802154_llsec_params *params,
 146                         int changed);
 147
 148int mac802154_add_key(struct net_device *dev,
 149                      const struct ieee802154_llsec_key_id *id,
 150                      const struct ieee802154_llsec_key *key);
 151int mac802154_del_key(struct net_device *dev,
 152                      const struct ieee802154_llsec_key_id *id);
 153
 154int mac802154_add_dev(struct net_device *dev,
 155                      const struct ieee802154_llsec_device *llsec_dev);
 156int mac802154_del_dev(struct net_device *dev, __le64 dev_addr);
 157
 158int mac802154_add_devkey(struct net_device *dev,
 159                         __le64 device_addr,
 160                         const struct ieee802154_llsec_device_key *key);
 161int mac802154_del_devkey(struct net_device *dev,
 162                         __le64 device_addr,
 163                         const struct ieee802154_llsec_device_key *key);
 164
 165int mac802154_add_seclevel(struct net_device *dev,
 166                           const struct ieee802154_llsec_seclevel *sl);
 167int mac802154_del_seclevel(struct net_device *dev,
 168                           const struct ieee802154_llsec_seclevel *sl);
 169
 170void mac802154_lock_table(struct net_device *dev);
 171void mac802154_get_table(struct net_device *dev,
 172                         struct ieee802154_llsec_table **t);
 173void mac802154_unlock_table(struct net_device *dev);
 174
 175int mac802154_wpan_update_llsec(struct net_device *dev);
 176
 177/* interface handling */
 178int ieee802154_iface_init(void);
 179void ieee802154_iface_exit(void);
 180void ieee802154_if_remove(struct ieee802154_sub_if_data *sdata);
 181struct net_device *
 182ieee802154_if_add(struct ieee802154_local *local, const char *name,
 183                  unsigned char name_assign_type, enum nl802154_iftype type,
 184                  __le64 extended_addr);
 185void ieee802154_remove_interfaces(struct ieee802154_local *local);
 186void ieee802154_stop_device(struct ieee802154_local *local);
 187
 188#endif /* __IEEE802154_I_H */
 189