LXR linux/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
  26struct 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
  38struct nfc_llc_engine {
  39        const char *name;
  40        struct nfc_llc_ops *ops;
  41        struct list_head entry;
  42};
  43
  44struct nfc_llc {
  45        void *data;
  46        struct nfc_llc_ops *ops;
  47        int rx_headroom;
  48        int rx_tailroom;
  49};
  50
  51void *nfc_llc_get_data(struct nfc_llc *llc);
  52
  53int nfc_llc_register(const char *name, struct nfc_llc_ops *ops);
  54void nfc_llc_unregister(const char *name);
  55
  56int nfc_llc_nop_register(void);
  57
  58#if defined(CONFIG_NFC_SHDLC)
  59int nfc_llc_shdlc_register(void);
  60#else
  61static inline int nfc_llc_shdlc_register(void)
  62{
  63        return 0;
  64}
  65#endif
  66
  67#endif /* __LOCAL_LLC_H_ */
  68