xref: /openbmc/linux/include/net/nfc/llc.h (revision e23feb16)
1 /*
2  * Link Layer Control manager public interface
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, write to the
17  * Free Software Foundation, Inc.,
18  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19  */
20 
21 #ifndef __NFC_LLC_H_
22 #define __NFC_LLC_H_
23 
24 #include <net/nfc/hci.h>
25 #include <linux/skbuff.h>
26 
27 #define LLC_NOP_NAME "nop"
28 #define LLC_SHDLC_NAME "shdlc"
29 
30 typedef void (*rcv_to_hci_t) (struct nfc_hci_dev *hdev, struct sk_buff *skb);
31 typedef int (*xmit_to_drv_t) (struct nfc_hci_dev *hdev, struct sk_buff *skb);
32 typedef void (*llc_failure_t) (struct nfc_hci_dev *hdev, int err);
33 
34 struct nfc_llc;
35 
36 struct nfc_llc *nfc_llc_allocate(const char *name, struct nfc_hci_dev *hdev,
37 				 xmit_to_drv_t xmit_to_drv,
38 				 rcv_to_hci_t rcv_to_hci, int tx_headroom,
39 				 int tx_tailroom, llc_failure_t llc_failure);
40 void nfc_llc_free(struct nfc_llc *llc);
41 
42 void nfc_llc_get_rx_head_tail_room(struct nfc_llc *llc, int *rx_headroom,
43 				   int *rx_tailroom);
44 
45 
46 int nfc_llc_start(struct nfc_llc *llc);
47 int nfc_llc_stop(struct nfc_llc *llc);
48 void nfc_llc_rcv_from_drv(struct nfc_llc *llc, struct sk_buff *skb);
49 int nfc_llc_xmit_from_hci(struct nfc_llc *llc, struct sk_buff *skb);
50 
51 int nfc_llc_init(void);
52 void nfc_llc_exit(void);
53 
54 #endif /* __NFC_LLC_H_ */
55