LXR linux/net/nfc/hci/llc.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * Link Layer Control manager
   4 *
   5 * Copyright (C) 2012  Intel Corporation. All rights reserved.
   6 */
   7
   8#ifndef __LOCAL_LLC_H_
   9#define __LOCAL_LLC_H_
  10
  11#include <net/nfc/hci.h>
  12#include <net/nfc/llc.h>
  13#include <linux/skbuff.h>
  14
  15struct nfc_llc_ops {
  16        void *(*init) (struct nfc_hci_dev *hdev, xmit_to_drv_t xmit_to_drv,
  17                       rcv_to_hci_t rcv_to_hci, int tx_headroom,
  18                       int tx_tailroom, int *rx_headroom, int *rx_tailroom,
  19                       llc_failure_t llc_failure);
  20        void (*deinit) (struct nfc_llc *llc);
  21        int (*start) (struct nfc_llc *llc);
  22        int (*stop) (struct nfc_llc *llc);
  23        void (*rcv_from_drv) (struct nfc_llc *llc, struct sk_buff *skb);
  24        int (*xmit_from_hci) (struct nfc_llc *llc, struct sk_buff *skb);
  25};
  26
  27struct nfc_llc_engine {
  28        const char *name;
  29        const struct nfc_llc_ops *ops;
  30        struct list_head entry;
  31};
  32
  33struct nfc_llc {
  34        void *data;
  35        const struct nfc_llc_ops *ops;
  36        int rx_headroom;
  37        int rx_tailroom;
  38};
  39
  40void *nfc_llc_get_data(struct nfc_llc *llc);
  41
  42int nfc_llc_register(const char *name, const struct nfc_llc_ops *ops);
  43void nfc_llc_unregister(const char *name);
  44
  45int nfc_llc_nop_register(void);
  46
  47#if defined(CONFIG_NFC_SHDLC)
  48int nfc_llc_shdlc_register(void);
  49#else
  50static inline int nfc_llc_shdlc_register(void)
  51{
  52        return 0;
  53}
  54#endif
  55
  56#endif /* __LOCAL_LLC_H_ */
  57