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Non-broadcast packets larger than MTU are fragmented and sent with an encapsulating header. Up to 16 fragments are supported, which are sent in reverse order on the wire to allow minimal memory copying when creating fragments. Signed-off-by: Martin Hundebøll <martin@hundeboll.net> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
51 lines
1.8 KiB
C
51 lines
1.8 KiB
C
/* Copyright (C) 2013 B.A.T.M.A.N. contributors:
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*
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* Martin Hundebøll <martin@hundeboll.net>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA
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*/
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#ifndef _NET_BATMAN_ADV_FRAGMENTATION_H_
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#define _NET_BATMAN_ADV_FRAGMENTATION_H_
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void batadv_frag_purge_orig(struct batadv_orig_node *orig,
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bool (*check_cb)(struct batadv_frag_table_entry *));
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bool batadv_frag_skb_fwd(struct sk_buff *skb,
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struct batadv_hard_iface *recv_if,
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struct batadv_orig_node *orig_node_src);
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bool batadv_frag_skb_buffer(struct sk_buff **skb,
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struct batadv_orig_node *orig_node);
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bool batadv_frag_send_packet(struct sk_buff *skb,
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struct batadv_orig_node *orig_node,
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struct batadv_neigh_node *neigh_node);
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/**
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* batadv_frag_check_entry - check if a list of fragments has timed out
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* @frags_entry: table entry to check
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*
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* Returns true if the frags entry has timed out, false otherwise.
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*/
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static inline bool
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batadv_frag_check_entry(struct batadv_frag_table_entry *frags_entry)
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{
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if (!hlist_empty(&frags_entry->head) &&
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batadv_has_timed_out(frags_entry->timestamp, BATADV_FRAG_TIMEOUT))
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return true;
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else
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return false;
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}
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#endif /* _NET_BATMAN_ADV_FRAGMENTATION_H_ */
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