alistair23-linux/net/nfc/hci/llc.h
Eric Lapuyade 8af00d48dc NFC: Add a nop (passthrough) llc module to llc core
This is a passthrough llc. It can be used by HCI drivers that don't
need link layer control. HCI will then write directly to the driver, and
driver will deliver incoming frames directly to HCI without any
processing.

Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-09-25 00:17:25 +02:00

61 lines
1.8 KiB
C

/*
* Link Layer Control manager
*
* Copyright (C) 2012 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __LOCAL_LLC_H_
#define __LOCAL_LLC_H_
#include <net/nfc/hci.h>
#include <net/nfc/llc.h>
#include <linux/skbuff.h>
struct nfc_llc_ops {
void *(*init) (struct nfc_hci_dev *hdev, xmit_to_drv_t xmit_to_drv,
rcv_to_hci_t rcv_to_hci, int tx_headroom,
int tx_tailroom, int *rx_headroom, int *rx_tailroom,
llc_failure_t llc_failure);
void (*deinit) (struct nfc_llc *llc);
int (*start) (struct nfc_llc *llc);
int (*stop) (struct nfc_llc *llc);
void (*rcv_from_drv) (struct nfc_llc *llc, struct sk_buff *skb);
int (*xmit_from_hci) (struct nfc_llc *llc, struct sk_buff *skb);
};
struct nfc_llc_engine {
const char *name;
struct nfc_llc_ops *ops;
struct list_head entry;
};
struct nfc_llc {
void *data;
struct nfc_llc_ops *ops;
int rx_headroom;
int rx_tailroom;
};
void *nfc_llc_get_data(struct nfc_llc *llc);
int nfc_llc_register(const char *name, struct nfc_llc_ops *ops);
void nfc_llc_unregister(const char *name);
int nfc_llc_nop_register(void);
#endif /* __LOCAL_LLC_H_ */