[deliverable/linux.git] / net / batman-adv / aggregation.h

/*
 * Copyright (C) 2007-2011 B.A.T.M.A.N. contributors:
 *
 * Marek Lindner, Simon Wunderlich
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License 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., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA
 *
 */

#ifndef _NET_BATMAN_ADV_AGGREGATION_H_
#define _NET_BATMAN_ADV_AGGREGATION_H_

#include "main.h"

/* is there another aggregated packet here? */
static inline int aggregated_packet(int buff_pos, int packet_len,
				    int tt_num_changes)
{
	int next_buff_pos = buff_pos + BAT_PACKET_LEN + (tt_num_changes *
						sizeof(struct tt_change));

	return (next_buff_pos <= packet_len) &&
		(next_buff_pos <= MAX_AGGREGATION_BYTES);
}

void add_bat_packet_to_list(struct bat_priv *bat_priv,
			    unsigned char *packet_buff, int packet_len,
			    struct hard_iface *if_incoming, int own_packet,
			    unsigned long send_time);
void receive_aggr_bat_packet(const struct ethhdr *ethhdr,
			     unsigned char *packet_buff, int packet_len,
			     struct hard_iface *if_incoming);

#endif /* _NET_BATMAN_ADV_AGGREGATION_H_ */
Commit	Line	Data
c6c8fea2	1	/*
64afe353	2	* Copyright (C) 2007-2011 B.A.T.M.A.N. contributors:
c6c8fea2 SE	3	*
	4	* Marek Lindner, Simon Wunderlich
	5	*
	6	* This program is free software; you can redistribute it and/or
	7	* modify it under the terms of version 2 of the GNU General Public
	8	* License as published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope that it will be useful, but
	11	* WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	* 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 Free Software
	17	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
	18	* 02110-1301, USA
	19	*
	20	*/
	21
	22	#ifndef _NET_BATMAN_ADV_AGGREGATION_H_
	23	#define _NET_BATMAN_ADV_AGGREGATION_H_
	24
	25	#include "main.h"
	26
	27	/* is there another aggregated packet here? */
a73105b8 AQ	28	static inline int aggregated_packet(int buff_pos, int packet_len,
a73105b8 AQ	29	int tt_num_changes)
c6c8fea2	30	{
a73105b8 AQ	31	int next_buff_pos = buff_pos + BAT_PACKET_LEN + (tt_num_changes *
a73105b8 AQ	32	sizeof(struct tt_change));
c6c8fea2 SE	33
	34	return (next_buff_pos <= packet_len) &&
	35	(next_buff_pos <= MAX_AGGREGATION_BYTES);
	36	}
	37
	38	void add_bat_packet_to_list(struct bat_priv *bat_priv,
	39	unsigned char *packet_buff, int packet_len,
b4e17054	40	struct hard_iface *if_incoming, int own_packet,
c6c8fea2	41	unsigned long send_time);
747e4221 SE	42	void receive_aggr_bat_packet(const struct ethhdr *ethhdr,
	43	unsigned char *packet_buff, int packet_len,
	44	struct hard_iface *if_incoming);
c6c8fea2 SE	45
c6c8fea2 SE	46	#endif /* _NET_BATMAN_ADV_AGGREGATION_H_ */