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authorJan Engelhardt <jengelh@medozas.de>2009-04-15 21:40:13 +0200
committerJan Engelhardt <jengelh@medozas.de>2009-05-08 10:30:49 +0200
commitbb70dfa5f8ab4a0f1c699ddb3ef0276d91219b7c (patch)
tree23c091d2be214b26d87d7800ca363288510311a3 /net/ipv4
parent7a6b1c46e28ab0511be26c238d552c00b51b88c5 (diff)
netfilter: xtables: consolidate comefrom debug cast access
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/netfilter/ip_tables.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index d91ecd4c264..7b35c0b3841 100644
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -311,6 +311,8 @@ ipt_do_table(struct sk_buff *skb,
const struct net_device *out,
struct xt_table *table)
{
+#define tb_comefrom ((struct ipt_entry *)table_base)->comefrom
+
static const char nulldevname[IFNAMSIZ] __attribute__((aligned(sizeof(long))));
const struct iphdr *ip;
u_int16_t datalen;
@@ -409,18 +411,19 @@ ipt_do_table(struct sk_buff *skb,
abs. verdicts */
tgpar.target = t->u.kernel.target;
tgpar.targinfo = t->data;
+
+
#ifdef CONFIG_NETFILTER_DEBUG
- ((struct ipt_entry *)table_base)->comefrom = 0xeeeeeeec;
+ tb_comefrom = 0xeeeeeeec;
#endif
verdict = t->u.kernel.target->target(skb, &tgpar);
#ifdef CONFIG_NETFILTER_DEBUG
- if (((struct ipt_entry *)table_base)->comefrom != 0xeeeeeeec &&
- verdict == IPT_CONTINUE) {
+ if (comefrom != 0xeeeeeeec && verdict == IPT_CONTINUE) {
printk("Target %s reentered!\n",
t->u.kernel.target->name);
verdict = NF_DROP;
}
- ((struct ipt_entry *)table_base)->comefrom = 0x57acc001;
+ tb_comefrom = 0x57acc001;
#endif
/* Target might have changed stuff. */
ip = ip_hdr(skb);
@@ -441,6 +444,8 @@ ipt_do_table(struct sk_buff *skb,
return NF_DROP;
else return verdict;
#endif
+
+#undef tb_comefrom
}
/* Figures out from what hook each rule can be called: returns 0 if