[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / nfc / hci / llc_nop.c

/*
 * nop (passthrough) Link Layer Control
 *
 * 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.
 */

#include <linux/types.h>

#include "llc.h"

struct llc_nop {
	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;
	llc_failure_t llc_failure;
};

static void *llc_nop_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)
{
	struct llc_nop *llc_nop;

	*rx_headroom = 0;
	*rx_tailroom = 0;

	llc_nop = kzalloc(sizeof(struct llc_nop), GFP_KERNEL);
	if (llc_nop == NULL)
		return NULL;

	llc_nop->hdev = hdev;
	llc_nop->xmit_to_drv = xmit_to_drv;
	llc_nop->rcv_to_hci = rcv_to_hci;
	llc_nop->tx_headroom = tx_headroom;
	llc_nop->tx_tailroom = tx_tailroom;
	llc_nop->llc_failure = llc_failure;

	return llc_nop;
}

static void llc_nop_deinit(struct nfc_llc *llc)
{
	kfree(nfc_llc_get_data(llc));
}

static int llc_nop_start(struct nfc_llc *llc)
{
	return 0;
}

static int llc_nop_stop(struct nfc_llc *llc)
{
	return 0;
}

static void llc_nop_rcv_from_drv(struct nfc_llc *llc, struct sk_buff *skb)
{
	struct llc_nop *llc_nop = nfc_llc_get_data(llc);

	llc_nop->rcv_to_hci(llc_nop->hdev, skb);
}

static int llc_nop_xmit_from_hci(struct nfc_llc *llc, struct sk_buff *skb)
{
	struct llc_nop *llc_nop = nfc_llc_get_data(llc);

	return llc_nop->xmit_to_drv(llc_nop->hdev, skb);
}

static struct nfc_llc_ops llc_nop_ops = {
	.init = llc_nop_init,
	.deinit = llc_nop_deinit,
	.start = llc_nop_start,
	.stop = llc_nop_stop,
	.rcv_from_drv = llc_nop_rcv_from_drv,
	.xmit_from_hci = llc_nop_xmit_from_hci,
};

int nfc_llc_nop_register(void)
{
	return nfc_llc_register(LLC_NOP_NAME, &llc_nop_ops);
}
Commit	Line	Data
8af00d48 EL	1	/*
	2	* nop (passthrough) Link Layer Control
	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	#include <linux/types.h>
8af00d48 EL	22
	23	#include "llc.h"
	24
	25	struct llc_nop {
	26	struct nfc_hci_dev *hdev;
	27	xmit_to_drv_t xmit_to_drv;
	28	rcv_to_hci_t rcv_to_hci;
	29	int tx_headroom;
	30	int tx_tailroom;
	31	llc_failure_t llc_failure;
	32	};
	33
	34	static void llc_nop_init(struct nfc_hci_dev hdev, xmit_to_drv_t xmit_to_drv,
	35	rcv_to_hci_t rcv_to_hci, int tx_headroom,
	36	int tx_tailroom, int rx_headroom, int rx_tailroom,
	37	llc_failure_t llc_failure)
	38	{
	39	struct llc_nop *llc_nop;
	40
	41	*rx_headroom = 0;
	42	*rx_tailroom = 0;
	43
	44	llc_nop = kzalloc(sizeof(struct llc_nop), GFP_KERNEL);
	45	if (llc_nop == NULL)
	46	return NULL;
	47
	48	llc_nop->hdev = hdev;
	49	llc_nop->xmit_to_drv = xmit_to_drv;
	50	llc_nop->rcv_to_hci = rcv_to_hci;
	51	llc_nop->tx_headroom = tx_headroom;
	52	llc_nop->tx_tailroom = tx_tailroom;
	53	llc_nop->llc_failure = llc_failure;
	54
	55	return llc_nop;
	56	}
	57
	58	static void llc_nop_deinit(struct nfc_llc *llc)
	59	{
	60	kfree(nfc_llc_get_data(llc));
	61	}
	62
	63	static int llc_nop_start(struct nfc_llc *llc)
	64	{
	65	return 0;
	66	}
	67
	68	static int llc_nop_stop(struct nfc_llc *llc)
	69	{
	70	return 0;
	71	}
	72
	73	static void llc_nop_rcv_from_drv(struct nfc_llc llc, struct sk_buff skb)
	74	{
	75	struct llc_nop *llc_nop = nfc_llc_get_data(llc);
	76
	77	llc_nop->rcv_to_hci(llc_nop->hdev, skb);
	78	}
	79
	80	static int llc_nop_xmit_from_hci(struct nfc_llc llc, struct sk_buff skb)
	81	{
	82	struct llc_nop *llc_nop = nfc_llc_get_data(llc);
	83
	84	return llc_nop->xmit_to_drv(llc_nop->hdev, skb);
	85	}
86
87	static struct nfc_llc_ops llc_nop_ops = {
88	.init = llc_nop_init,
89	.deinit = llc_nop_deinit,
90	.start = llc_nop_start,
91	.stop = llc_nop_stop,
92	.rcv_from_drv = llc_nop_rcv_from_drv,
93	.xmit_from_hci = llc_nop_xmit_from_hci,
94	};
95
a7d0281b	96	int nfc_llc_nop_register(void)
8af00d48 EL	97	{
	98	return nfc_llc_register(LLC_NOP_NAME, &llc_nop_ops);
	99	}