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

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/* Copyright (C) 2013-2019  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
  29struct sk_buff;
  30
  31void batadv_frag_purge_orig(struct batadv_orig_node *orig,
  32                            bool (*check_cb)(struct batadv_frag_table_entry *));
  33bool batadv_frag_skb_fwd(struct sk_buff *skb,
  34                         struct batadv_hard_iface *recv_if,
  35                         struct batadv_orig_node *orig_node_src);
  36bool batadv_frag_skb_buffer(struct sk_buff **skb,
  37                            struct batadv_orig_node *orig_node);
  38int 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 */
  48static inline bool
  49batadv_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_ */
  58