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Staging: batman-adv: avoid having the same error message more than once 

The routing code has 2 sections which warn about ttl exceeded. The
corresponding warnings were identical which makes it hard to debug. In
addition, batman-adv does not need to warn about ttl exceeded in case
we encountered an echo request as this is commonly used to generate
traceroute graphs.

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Marek Lindner 2010-02-19 16:18:06 +01:00 committed by Greg Kroah-Hartman
parent eb50081d8f
commit 149de2e58b
1 changed files with 8 additions and 6 deletions
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14
drivers/staging/batman-adv/routing.c
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@ -655,14 +655,15 @@ static int recv_icmp_ttl_exceeded(struct sk_buff *skb)
unsigned long flags; unsigned long flags;
uint8_t dstaddr[ETH_ALEN]; uint8_t dstaddr[ETH_ALEN];
icmp_packet = (struct icmp_packet *) skb->data; icmp_packet = (struct icmp_packet *)skb->data;
ethhdr = (struct ethhdr *) skb_mac_header(skb); ethhdr = (struct ethhdr *)skb_mac_header(skb);
printk(KERN_WARNING "batman-adv:Warning - can't send packet from %pM to %pM: ttl exceeded\n", icmp_packet->orig, icmp_packet->dst);
/* send TTL exceeded if packet is an echo request (traceroute) */ /* send TTL exceeded if packet is an echo request (traceroute) */
if (icmp_packet->msg_type != ECHO_REQUEST) if (icmp_packet->msg_type != ECHO_REQUEST) {
printk(KERN_WARNING "batman-adv:Warning - can't forward icmp packet from %pM to %pM: ttl exceeded\n",
icmp_packet->orig, icmp_packet->dst);
return NET_RX_DROP; return NET_RX_DROP;
}
/* get routing information */ /* get routing information */
spin_lock_irqsave(&orig_hash_lock, flags); spin_lock_irqsave(&orig_hash_lock, flags);
@ -825,7 +826,8 @@ int recv_unicast_packet(struct sk_buff *skb)
/* TTL exceeded */ /* TTL exceeded */
if (unicast_packet->ttl < 2) { if (unicast_packet->ttl < 2) {
printk(KERN_WARNING "batman-adv:Warning - can't send packet from %pM to %pM: ttl exceeded\n", ethhdr->h_source, unicast_packet->dest); printk(KERN_WARNING "batman-adv:Warning - can't forward unicast packet from %pM to %pM: ttl exceeded\n",
ethhdr->h_source, unicast_packet->dest);
return NET_RX_DROP; return NET_RX_DROP;
} }