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 15 struct 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 27 struct nfc_llc_engine { 28 const char *name; 29 const struct nfc_llc_ops *ops; 30 struct list_head entry; 31 }; 32 33 struct nfc_llc { 34 void *data; 35 const struct nfc_llc_ops *ops; 36 int rx_headroom; 37 int rx_tailroom; 38 }; 39 40 void *nfc_llc_get_data(struct nfc_llc *llc); 41 42 int nfc_llc_register(const char *name, const struct nfc_llc_ops *ops); 43 void nfc_llc_unregister(const char *name); 44 45 int nfc_llc_nop_register(void); 46 47 #if defined(CONFIG_NFC_SHDLC) 48 int nfc_llc_shdlc_register(void); 49 #else 50 static inline int nfc_llc_shdlc_register(void) 51 { 52 return 0; 53 } 54 #endif 55 56 #endif /* __LOCAL_LLC_H_ */ 57