drivers/staging/batman-adv/aggregation.h

   1 /*
   2  * Copyright (C) 2007-2010 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(struct bat_priv *bat_priv,
  34                             unsigned char *packet_buff, int packet_len,
  35                             struct batman_if *if_incoming, char own_packet,
  36                             unsigned long send_time);
  37 void receive_aggr_bat_packet(struct ethhdr *ethhdr, unsigned char *packet_buff,
  38                              int packet_len, struct batman_if *if_incoming);