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netfilter: xtables: consolidate open-coded logic

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Signed-off-by: Jan Engelhardt <[email protected]>
This commit is contained in:
Jan Engelhardt 2009-04-15 21:06:05 +02:00
commit 98e8640316
4 changed files with 40 additions and 18 deletions
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14
net/ipv6/netfilter/ip6_tables.c
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@ -329,6 +329,12 @@ static void trace_packet(struct sk_buff *skb,
}
#endif
static inline __pure struct ip6t_entry *
ip6t_next_entry(const struct ip6t_entry *entry)
{
return (void *)entry + entry->next_offset;
}
/* Returns one of the generic firewall policies, like NF_ACCEPT. */
unsigned int
ip6t_do_table(struct sk_buff *skb,
@ -414,11 +420,11 @@ ip6t_do_table(struct sk_buff *skb,
back->comefrom);
continue;
}
if (table_base + v != (void *)e + e->next_offset
if (table_base + v != ip6t_next_entry(e)
&& !(e->ipv6.flags & IP6T_F_GOTO)) {
/* Save old back ptr in next entry */
struct ip6t_entry *next
= (void *)e + e->next_offset;
= ip6t_next_entry(e);
next->comefrom
= (void *)back - table_base;
/* set back pointer to next entry */
@ -451,7 +457,7 @@ ip6t_do_table(struct sk_buff *skb,
= 0x57acc001;
#endif
if (verdict == IP6T_CONTINUE)
e = (void *)e + e->next_offset;
e = ip6t_next_entry(e);
else
/* Verdict */
break;
@ -459,7 +465,7 @@ ip6t_do_table(struct sk_buff *skb,
} else {
no_match:
e = (void *)e + e->next_offset;
e = ip6t_next_entry(e);
}
} while (!hotdrop);