net/nfc/nfc.h

   1 /*
   2  * Copyright (C) 2011 Instituto Nokia de Tecnologia
   3  *
   4  * Authors:
   5  *    Lauro Ramos Venancio <lauro.venancio@openbossa.org>
   6  *    Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the
  20  * Free Software Foundation, Inc.,
  21  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  22  */
  23
  24 #ifndef __LOCAL_NFC_H
  25 #define __LOCAL_NFC_H
  26
  27 #include <net/nfc/nfc.h>
  28 #include <net/sock.h>
  29
  30 struct nfc_protocol {
  31         int id;
  32         struct proto *proto;
  33         struct module *owner;
  34         int (*create)(struct net *net, struct socket *sock,
  35                       const struct nfc_protocol *nfc_proto);
  36 };
  37
  38 struct nfc_rawsock {
  39         struct sock sk;
  40         struct nfc_dev *dev;
  41         u32 target_idx;
  42         struct work_struct tx_work;
  43         bool tx_work_scheduled;
  44 };
  45 #define nfc_rawsock(sk) ((struct nfc_rawsock *) sk)
  46 #define to_rawsock_sk(_tx_work) \
  47         ((struct sock *) container_of(_tx_work, struct nfc_rawsock, tx_work))
  48
  49 #ifdef CONFIG_NFC_LLCP
  50
  51 void nfc_llcp_mac_is_down(struct nfc_dev *dev);
  52 void nfc_llcp_mac_is_up(struct nfc_dev *dev, u32 target_idx,
  53                         u8 comm_mode, u8 rf_mode);
  54 int nfc_llcp_register_device(struct nfc_dev *dev);
  55 void nfc_llcp_unregister_device(struct nfc_dev *dev);
  56 int nfc_llcp_set_remote_gb(struct nfc_dev *dev, u8 *gb, u8 gb_len);
  57 u8 *nfc_llcp_general_bytes(struct nfc_dev *dev, size_t *general_bytes_len);
  58 int nfc_llcp_data_received(struct nfc_dev *dev, struct sk_buff *skb);
  59 struct nfc_llcp_local *nfc_llcp_find_local(struct nfc_dev *dev);
  60 int __init nfc_llcp_init(void);
  61 void nfc_llcp_exit(void);
  62
  63 #else
  64
  65 static inline void nfc_llcp_mac_is_down(struct nfc_dev *dev)
  66 {
  67 }
  68
  69 static inline void nfc_llcp_mac_is_up(struct nfc_dev *dev, u32 target_idx,
  70                                       u8 comm_mode, u8 rf_mode)
  71 {
  72 }
  73
  74 static inline int nfc_llcp_register_device(struct nfc_dev *dev)
  75 {
  76         return 0;
  77 }
  78
  79 static inline void nfc_llcp_unregister_device(struct nfc_dev *dev)
  80 {
  81 }
  82
  83 static inline int nfc_llcp_set_remote_gb(struct nfc_dev *dev,
  84                                          u8 *gb, u8 gb_len)
  85 {
  86         return 0;
  87 }
  88
  89 static inline u8 *nfc_llcp_general_bytes(struct nfc_dev *dev, size_t *gb_len)
  90 {
  91         *gb_len = 0;
  92         return NULL;
  93 }
  94
  95 static inline int nfc_llcp_data_received(struct nfc_dev *dev,
  96                                          struct sk_buff *skb)
  97 {
  98         return 0;
  99 }
 100
 101 static inline struct nfc_llcp_local *nfc_llcp_find_local(struct nfc_dev *dev)
 102 {
 103         return NULL;
 104 }
 105
 106 static inline int nfc_llcp_init(void)
 107 {
 108         return 0;
 109 }
 110
 111 static inline void nfc_llcp_exit(void)
 112 {
 113 }
 114
 115 #endif
 116
 117 int __init rawsock_init(void);
 118 void rawsock_exit(void);
 119
 120 int __init af_nfc_init(void);
 121 void af_nfc_exit(void);
 122 int nfc_proto_register(const struct nfc_protocol *nfc_proto);
 123 void nfc_proto_unregister(const struct nfc_protocol *nfc_proto);
 124
 125 extern int nfc_devlist_generation;
 126 extern struct mutex nfc_devlist_mutex;
 127
 128 int __init nfc_genl_init(void);
 129 void nfc_genl_exit(void);
 130
 131 void nfc_genl_data_init(struct nfc_genl_data *genl_data);
 132 void nfc_genl_data_exit(struct nfc_genl_data *genl_data);
 133
 134 int nfc_genl_targets_found(struct nfc_dev *dev);
 135 int nfc_genl_target_lost(struct nfc_dev *dev, u32 target_idx);
 136
 137 int nfc_genl_device_added(struct nfc_dev *dev);
 138 int nfc_genl_device_removed(struct nfc_dev *dev);
 139
 140 int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx,
 141                                u8 comm_mode, u8 rf_mode);
 142 int nfc_genl_dep_link_down_event(struct nfc_dev *dev);
 143
 144 int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol);
 145 int nfc_genl_tm_deactivated(struct nfc_dev *dev);
 146
 147 struct nfc_dev *nfc_get_device(unsigned int idx);
 148
 149 static inline void nfc_put_device(struct nfc_dev *dev)
 150 {
 151         put_device(&dev->dev);
 152 }
 153
 154 static inline void nfc_device_iter_init(struct class_dev_iter *iter)
 155 {
 156         class_dev_iter_init(iter, &nfc_class, NULL, NULL);
 157 }
 158
 159 static inline struct nfc_dev *nfc_device_iter_next(struct class_dev_iter *iter)
 160 {
 161         struct device *d = class_dev_iter_next(iter);
 162         if (!d)
 163                 return NULL;
 164
 165         return to_nfc_dev(d);
 166 }
 167
 168 static inline void nfc_device_iter_exit(struct class_dev_iter *iter)
 169 {
 170         class_dev_iter_exit(iter);
 171 }
 172
 173 int nfc_dev_up(struct nfc_dev *dev);
 174
 175 int nfc_dev_down(struct nfc_dev *dev);
 176
 177 int nfc_start_poll(struct nfc_dev *dev, u32 im_protocols, u32 tm_protocols);
 178
 179 int nfc_stop_poll(struct nfc_dev *dev);
 180
 181 int nfc_dep_link_up(struct nfc_dev *dev, int target_idx, u8 comm_mode);
 182
 183 int nfc_dep_link_down(struct nfc_dev *dev);
 184
 185 int nfc_activate_target(struct nfc_dev *dev, u32 target_idx, u32 protocol);
 186
 187 int nfc_deactivate_target(struct nfc_dev *dev, u32 target_idx);
 188
 189 int nfc_data_exchange(struct nfc_dev *dev, u32 target_idx, struct sk_buff *skb,
 190                       data_exchange_cb_t cb, void *cb_context);
 191
 192 #endif /* __LOCAL_NFC_H */