forked from Minki/linux
9cfc7bd608
batman-adv doesn't follow the style for multiline comments that David S. Miller prefers. All comments should be reformatted to follow this consistent style to make the code slightly more readable. Signed-off-by: Sven Eckelmann <sven@narfation.org>
58 lines
1.9 KiB
C
58 lines
1.9 KiB
C
/* Copyright (C) 2010-2012 B.A.T.M.A.N. contributors:
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*
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* Andreas Langer
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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_UNICAST_H_
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#define _NET_BATMAN_ADV_UNICAST_H_
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#include "packet.h"
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#define FRAG_TIMEOUT 10000 /* purge frag list entries after time in ms */
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#define FRAG_BUFFER_SIZE 6 /* number of list elements in buffer */
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int batadv_frag_reassemble_skb(struct sk_buff *skb, struct bat_priv *bat_priv,
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struct sk_buff **new_skb);
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void batadv_frag_list_free(struct list_head *head);
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int batadv_unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv);
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int batadv_frag_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv,
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struct hard_iface *hard_iface,
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const uint8_t dstaddr[]);
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static inline int frag_can_reassemble(const struct sk_buff *skb, int mtu)
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{
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const struct unicast_frag_packet *unicast_packet;
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int uneven_correction = 0;
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unsigned int merged_size;
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unicast_packet = (struct unicast_frag_packet *)skb->data;
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if (unicast_packet->flags & UNI_FRAG_LARGETAIL) {
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if (unicast_packet->flags & UNI_FRAG_HEAD)
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uneven_correction = 1;
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else
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uneven_correction = -1;
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}
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merged_size = (skb->len - sizeof(*unicast_packet)) * 2;
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merged_size += sizeof(struct unicast_packet) + uneven_correction;
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return merged_size <= mtu;
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}
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#endif /* _NET_BATMAN_ADV_UNICAST_H_ */
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