net/nfc/hci/llc.h

   1 /*
   2  * Link Layer Control manager
   3  *
   4  * Copyright (C) 2012  Intel Corporation. All rights reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef __LOCAL_LLC_H_
  20 #define __LOCAL_LLC_H_
  21
  22 #include <net/nfc/hci.h>
  23 #include <net/nfc/llc.h>
  24 #include <linux/skbuff.h>
  25
  26 struct nfc_llc_ops {
  27         void *(*init) (struct nfc_hci_dev *hdev, xmit_to_drv_t xmit_to_drv,
  28                        rcv_to_hci_t rcv_to_hci, int tx_headroom,
  29                        int tx_tailroom, int *rx_headroom, int *rx_tailroom,
  30                        llc_failure_t llc_failure);
  31         void (*deinit) (struct nfc_llc *llc);
  32         int (*start) (struct nfc_llc *llc);
  33         int (*stop) (struct nfc_llc *llc);
  34         void (*rcv_from_drv) (struct nfc_llc *llc, struct sk_buff *skb);
  35         int (*xmit_from_hci) (struct nfc_llc *llc, struct sk_buff *skb);
  36 };
  37
  38 struct nfc_llc_engine {
  39         const char *name;
  40         struct nfc_llc_ops *ops;
  41         struct list_head entry;
  42 };
  43
  44 struct nfc_llc {
  45         void *data;
  46         struct nfc_llc_ops *ops;
  47         int rx_headroom;
  48         int rx_tailroom;
  49 };
  50
  51 void *nfc_llc_get_data(struct nfc_llc *llc);
  52
  53 int nfc_llc_register(const char *name, struct nfc_llc_ops *ops);
  54 void nfc_llc_unregister(const char *name);
  55
  56 int nfc_llc_nop_register(void);
  57
  58 #if defined(CONFIG_NFC_SHDLC)
  59 int nfc_llc_shdlc_register(void);
  60 #else
  61 static inline int nfc_llc_shdlc_register(void)
  62 {
  63         return 0;
  64 }
  65 #endif
  66
  67 #endif /* __LOCAL_LLC_H_ */