net/batman-adv/fragmentation.h

   1 /* Copyright (C) 2013-2014 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, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #ifndef _NET_BATMAN_ADV_FRAGMENTATION_H_
  19 #define _NET_BATMAN_ADV_FRAGMENTATION_H_
  20
  21 void batadv_frag_purge_orig(struct batadv_orig_node *orig,
  22                             bool (*check_cb)(struct batadv_frag_table_entry *));
  23 bool batadv_frag_skb_fwd(struct sk_buff *skb,
  24                          struct batadv_hard_iface *recv_if,
  25                          struct batadv_orig_node *orig_node_src);
  26 bool batadv_frag_skb_buffer(struct sk_buff **skb,
  27                             struct batadv_orig_node *orig_node);
  28 bool batadv_frag_send_packet(struct sk_buff *skb,
  29                              struct batadv_orig_node *orig_node,
  30                              struct batadv_neigh_node *neigh_node);
  31
  32 /**
  33  * batadv_frag_check_entry - check if a list of fragments has timed out
  34  * @frags_entry: table entry to check
  35  *
  36  * Returns true if the frags entry has timed out, false otherwise.
  37  */
  38 static inline bool
  39 batadv_frag_check_entry(struct batadv_frag_table_entry *frags_entry)
  40 {
  41         if (!hlist_empty(&frags_entry->head) &&
  42             batadv_has_timed_out(frags_entry->timestamp, BATADV_FRAG_TIMEOUT))
  43                 return true;
  44         else
  45                 return false;
  46 }
  47
  48 #endif /* _NET_BATMAN_ADV_FRAGMENTATION_H_ */