[mirror_ubuntu-kernels.git] / drivers / staging / batman-adv / aggregation.h

/*
 * Copyright (C) 2007-2009 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
 *
 */

#include "main.h"

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

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

void add_bat_packet_to_list(unsigned char *packet_buff, int packet_len,
			    struct batman_if *if_outgoing, char own_packet,
			    unsigned long send_time);
void receive_aggr_bat_packet(struct ethhdr *ethhdr, unsigned char *packet_buff,
			     int packet_len, struct batman_if *if_incoming);
Commit	Line	Data
5beef3c9 AL	1	/*
	2	* Copyright (C) 2007-2009 B.A.T.M.A.N. contributors:
	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	#include "main.h"
	23
	24	/* is there another aggregated packet here? */
	25	static inline int aggregated_packet(int buff_pos, int packet_len, int num_hna)
	26	{
	27	int next_buff_pos = buff_pos + BAT_PACKET_LEN + (num_hna * ETH_ALEN);
	28
	29	return (next_buff_pos <= packet_len) &&
	30	(next_buff_pos <= MAX_AGGREGATION_BYTES);
	31	}
	32
	33	void add_bat_packet_to_list(unsigned char *packet_buff, int packet_len,
	34	struct batman_if *if_outgoing, char own_packet,
	35	unsigned long send_time);
	36	void receive_aggr_bat_packet(struct ethhdr ethhdr, unsigned char packet_buff,
	37	int packet_len, struct batman_if *if_incoming);