net/batman-adv/fragmentation.h

   1 /* Copyright (C) 2013 B.A.T.M.A.N. contributors:
   2  *
   3  * Martin Hundebøll <martin@hundeboll.net>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of version 2 of the GNU General Public
   7  * License as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  17  * 02110-1301, USA
  18  */
  19
  20 #ifndef _NET_BATMAN_ADV_FRAGMENTATION_H_
  21 #define _NET_BATMAN_ADV_FRAGMENTATION_H_
  22
  23 void batadv_frag_purge_orig(struct batadv_orig_node *orig,
  24                             bool (*check_cb)(struct batadv_frag_table_entry *));
  25 bool batadv_frag_skb_fwd(struct sk_buff *skb,
  26                          struct batadv_hard_iface *recv_if,
  27                          struct batadv_orig_node *orig_node_src);
  28 bool batadv_frag_skb_buffer(struct sk_buff **skb,
  29                             struct batadv_orig_node *orig_node);
  30
  31 /**
  32  * batadv_frag_check_entry - check if a list of fragments has timed out
  33  * @frags_entry: table entry to check
  34  *
  35  * Returns true if the frags entry has timed out, false otherwise.
  36  */
  37 static inline bool
  38 batadv_frag_check_entry(struct batadv_frag_table_entry *frags_entry)
  39 {
  40         if (!hlist_empty(&frags_entry->head) &&
  41             batadv_has_timed_out(frags_entry->timestamp, BATADV_FRAG_TIMEOUT))
  42                 return true;
  43         else
  44                 return false;
  45 }
  46
  47 #endif /* _NET_BATMAN_ADV_FRAGMENTATION_H_ */