LXR linux/net/batman-adv/fragmentation.h

   1/* Copyright (C) 2013-2017  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#include "main.h"
  22
  23#include <linux/compiler.h>
  24#include <linux/list.h>
  25#include <linux/stddef.h>
  26#include <linux/types.h>
  27
  28struct sk_buff;
  29
  30void batadv_frag_purge_orig(struct batadv_orig_node *orig,
  31                            bool (*check_cb)(struct batadv_frag_table_entry *));
  32bool batadv_frag_skb_fwd(struct sk_buff *skb,
  33                         struct batadv_hard_iface *recv_if,
  34                         struct batadv_orig_node *orig_node_src);
  35bool batadv_frag_skb_buffer(struct sk_buff **skb,
  36                            struct batadv_orig_node *orig_node);
  37int batadv_frag_send_packet(struct sk_buff *skb,
  38                            struct batadv_orig_node *orig_node,
  39                            struct batadv_neigh_node *neigh_node);
  40
  41/**
  42 * batadv_frag_check_entry - check if a list of fragments has timed out
  43 * @frags_entry: table entry to check
  44 *
  45 * Return: true if the frags entry has timed out, false otherwise.
  46 */
  47static inline bool
  48batadv_frag_check_entry(struct batadv_frag_table_entry *frags_entry)
  49{
  50        if (!hlist_empty(&frags_entry->fragment_list) &&
  51            batadv_has_timed_out(frags_entry->timestamp, BATADV_FRAG_TIMEOUT))
  52                return true;
  53        return false;
  54}
  55
  56#endif /* _NET_BATMAN_ADV_FRAGMENTATION_H_ */
  57