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004e86fc58
If the skb is fragmented, the checksum must be computed on the individual fragments, just using skb->data may fail on fragmented data. Instead of doing linearizing the packet, use the new batadv_crc32 to do that more efficiently- it should not hurt replacing the old crc16 by the new crc32. Reported-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Marek Lindner <lindner_marek@yahoo.de> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
107 lines
3.0 KiB
C
107 lines
3.0 KiB
C
/* Copyright (C) 2011-2012 B.A.T.M.A.N. contributors:
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*
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* Simon Wunderlich
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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_BLA_H_
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#define _NET_BATMAN_ADV_BLA_H_
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#ifdef CONFIG_BATMAN_ADV_BLA
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int batadv_bla_rx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid,
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bool is_bcast);
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int batadv_bla_tx(struct batadv_priv *bat_priv, struct sk_buff *skb, short vid);
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int batadv_bla_is_backbone_gw(struct sk_buff *skb,
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struct batadv_orig_node *orig_node, int hdr_size);
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int batadv_bla_claim_table_seq_print_text(struct seq_file *seq, void *offset);
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int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq,
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void *offset);
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int batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv, uint8_t *orig);
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int batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
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struct sk_buff *skb);
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void batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
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struct batadv_hard_iface *primary_if,
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struct batadv_hard_iface *oldif);
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int batadv_bla_init(struct batadv_priv *bat_priv);
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void batadv_bla_free(struct batadv_priv *bat_priv);
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#define BATADV_BLA_CRC_INIT 0
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#else /* ifdef CONFIG_BATMAN_ADV_BLA */
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static inline int batadv_bla_rx(struct batadv_priv *bat_priv,
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struct sk_buff *skb, short vid, bool is_bcast)
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{
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return 0;
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}
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static inline int batadv_bla_tx(struct batadv_priv *bat_priv,
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struct sk_buff *skb, short vid)
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{
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return 0;
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}
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static inline int batadv_bla_is_backbone_gw(struct sk_buff *skb,
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struct batadv_orig_node *orig_node,
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int hdr_size)
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{
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return 0;
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}
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static inline int batadv_bla_claim_table_seq_print_text(struct seq_file *seq,
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void *offset)
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{
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return 0;
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}
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static inline int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq,
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void *offset)
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{
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return 0;
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}
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static inline int batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv,
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uint8_t *orig)
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{
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return 0;
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}
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static inline int
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batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
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struct sk_buff *skb)
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{
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return 0;
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}
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static inline void
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batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
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struct batadv_hard_iface *primary_if,
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struct batadv_hard_iface *oldif)
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{
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}
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static inline int batadv_bla_init(struct batadv_priv *bat_priv)
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{
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return 1;
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}
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static inline void batadv_bla_free(struct batadv_priv *bat_priv)
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{
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}
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#endif /* ifdef CONFIG_BATMAN_ADV_BLA */
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#endif /* ifndef _NET_BATMAN_ADV_BLA_H_ */
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