netfilter: bridge-netfilter: cleanup br_netfilter.c

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>

1 files changed, 2 insertions, 56 deletions

diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c
index bc6b57248494..dd6f538ba0b0 100644
--- a/net/bridge/br_netfilter.c
+++ b/net/bridge/br_netfilter.c
@@ -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 *****************************************************/