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
nfc_llc_shdlc_register(void)50 static inline int nfc_llc_shdlc_register(void)
51 {
52 	return 0;
53 }
54 #endif
55 
56 #endif /* __LOCAL_LLC_H_ */
57