xref: /linux/net/batman-adv/fragmentation.h (revision 93d90ad708b8da6efc0e487b66111aa9db7f70c7)
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_ */
49