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batman-adv: Fix broadcast duplist for fragmentation

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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>
This commit is contained in:
Simon Wunderlich
2012-10-18 13:47:42 +02:00
committed by Antonio Quartulli
parent 95a066d82c
commit 004e86fc58
4 changed files with 11 additions and 23 deletions
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6
net/batman-adv/bridge_loop_avoidance.h
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@@ -31,8 +31,7 @@ int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq,
void *offset);
int batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv, uint8_t *orig);
int batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
struct batadv_bcast_packet *bcast_packet,
int hdr_size);
struct sk_buff *skb);
void batadv_bla_update_orig_address(struct batadv_priv *bat_priv,
struct batadv_hard_iface *primary_if,
struct batadv_hard_iface *oldif);
@@ -81,8 +80,7 @@ static inline int batadv_bla_is_backbone_gw_orig(struct batadv_priv *bat_priv,
static inline int
batadv_bla_check_bcast_duplist(struct batadv_priv *bat_priv,
struct batadv_bcast_packet *bcast_packet,
int hdr_size)
struct sk_buff *skb)
{
return 0;
}