net/batman-adv/fragmentation.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright (C) 2013-2017  B.A.T.M.A.N. contributors:
   3  *
   4  * Martin Hundebøll <martin@hundeboll.net>
   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, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef _NET_BATMAN_ADV_FRAGMENTATION_H_
  20 #define _NET_BATMAN_ADV_FRAGMENTATION_H_
  21
  22 #include "main.h"
  23
  24 #include <linux/compiler.h>
  25 #include <linux/list.h>
  26 #include <linux/stddef.h>
  27 #include <linux/types.h>
  28
  29 struct sk_buff;
  30
  31 void batadv_frag_purge_orig(struct batadv_orig_node *orig,
  32                             bool (*check_cb)(struct batadv_frag_table_entry *));
  33 bool batadv_frag_skb_fwd(struct sk_buff *skb,
  34                          struct batadv_hard_iface *recv_if,
  35                          struct batadv_orig_node *orig_node_src);
  36 bool batadv_frag_skb_buffer(struct sk_buff **skb,
  37                             struct batadv_orig_node *orig_node);
  38 int batadv_frag_send_packet(struct sk_buff *skb,
  39                             struct batadv_orig_node *orig_node,
  40                             struct batadv_neigh_node *neigh_node);
  41
  42 /**
  43  * batadv_frag_check_entry() - check if a list of fragments has timed out
  44  * @frags_entry: table entry to check
  45  *
  46  * Return: true if the frags entry has timed out, false otherwise.
  47  */
  48 static inline bool
  49 batadv_frag_check_entry(struct batadv_frag_table_entry *frags_entry)
  50 {
  51         if (!hlist_empty(&frags_entry->fragment_list) &&
  52             batadv_has_timed_out(frags_entry->timestamp, BATADV_FRAG_TIMEOUT))
  53                 return true;
  54         return false;
  55 }
  56
  57 #endif /* _NET_BATMAN_ADV_FRAGMENTATION_H_ */