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netfilter: bridge-netfilter: cleanup br_netfilter.c

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bridge-netfilter: cleanup br_netfilter.c

- remove some of the graffiti at the head of br_netfilter.c
- remove __br_dnat_complain()
- remove KERN_INFO messages when CONFIG_NETFILTER_DEBUG is defined

Signed-off-by: Bart De Schuymer <bdschuym@pandora.be>
Signed-off-by: Patrick McHardy <kaber@trash.net>
This commit is contained in:
Bart De Schuymer 2010-04-13 11:40:41 +02:00 committed by Patrick McHardy
parent 22068311b6
commit 8237908e14
1 changed files with 2 additions and 56 deletions
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58
net/bridge/br_netfilter.c
View file

@ -3,15 +3,8 @@
* Linux ethernet bridge
*
* Authors:
* Lennert Buytenhek <buytenh@gnu.org>
* Bart De Schuymer (maintainer) <bdschuym@pandora.be>
*
* Changes:
* Apr 29 2003: physdev module support (bdschuym)
* Jun 19 2003: let arptables see bridged ARP traffic (bdschuym)
* Oct 06 2003: filter encapsulated IP/ARP VLAN traffic on untagged bridge
* (bdschuym)
* Sep 01 2004: add IPv6 filtering (bdschuym)
* Lennert Buytenhek <buytenh@gnu.org>
* Bart De Schuymer <bdschuym@pandora.be>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
@ -252,17 +245,6 @@ static int br_nf_pre_routing_finish_ipv6(struct sk_buff *skb)
return 0;
}
static void __br_dnat_complain(void)
{
static unsigned long last_complaint;
if (jiffies - last_complaint >= 5 * HZ) {
printk(KERN_WARNING "Performing cross-bridge DNAT requires IP "
"forwarding to be enabled\n");
last_complaint = jiffies;
}
}
/* This requires some explaining. If DNAT has taken place,
* we will need to fix up the destination Ethernet address,
* and this is a tricky process.
@ -378,11 +360,6 @@ static int br_nf_pre_routing_finish(struct sk_buff *skb)
skb_dst_set(skb, (struct dst_entry *)rt);
goto bridged_dnat;
}
/* we are sure that forwarding is disabled, so printing
* this message is no problem. Note that the packet could
* still have a martian destination address, in which case
* the packet could be dropped even if forwarding were enabled */
__br_dnat_complain();
dst_release((struct dst_entry *)rt);
}
free_skb:
@ -820,17 +797,6 @@ static unsigned int br_nf_post_routing(unsigned int hook, struct sk_buff *skb,
struct net_device *realoutdev = bridge_parent(skb->dev);
u_int8_t pf;
#ifdef CONFIG_NETFILTER_DEBUG
/* Be very paranoid. This probably won't happen anymore, but let's
* keep the check just to be sure... */
if (skb_mac_header(skb) < skb->head ||
skb_mac_header(skb) + ETH_HLEN > skb->data) {
printk(KERN_CRIT "br_netfilter: Argh!! br_nf_post_routing: "
"bad mac.raw pointer.\n");
goto print_error;
}
#endif
if (!nf_bridge)
return NF_ACCEPT;
@ -849,13 +815,6 @@ static unsigned int br_nf_post_routing(unsigned int hook, struct sk_buff *skb,
else
return NF_ACCEPT;
#ifdef CONFIG_NETFILTER_DEBUG
if (skb_dst(skb) == NULL) {
printk(KERN_INFO "br_netfilter post_routing: skb->dst == NULL\n");
goto print_error;
}
#endif
/* We assume any code from br_dev_queue_push_xmit onwards doesn't care
* about the value of skb->pkt_type. */
if (skb->pkt_type == PACKET_OTHERHOST) {
@ -870,19 +829,6 @@ static unsigned int br_nf_post_routing(unsigned int hook, struct sk_buff *skb,
br_nf_dev_queue_xmit);
return NF_STOLEN;
#ifdef CONFIG_NETFILTER_DEBUG
print_error:
if (skb->dev != NULL) {
printk("[%s]", skb->dev->name);
if (realoutdev)
printk("[%s]", realoutdev->name);
}
printk(" head:%p, raw:%p, data:%p\n", skb->head, skb_mac_header(skb),
skb->data);
dump_stack();
return NF_ACCEPT;
#endif
}
/* IP/SABOTAGE *****************************************************/