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netfilter: xtables: consolidate open-coded logic

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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
This commit is contained in:
Jan Engelhardt
2009-04-15 21:06:05 +02:00
parent 4f2f6f236a
commit 98e8640316
4 changed files with 40 additions and 18 deletions
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16
net/bridge/netfilter/ebtables.c
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@ -142,6 +142,12 @@ static inline int ebt_basic_match(struct ebt_entry *e, struct ethhdr *h,
return 0;
}
static inline __pure
struct ebt_entry *ebt_next_entry(const struct ebt_entry *entry)
{
return (void *)entry + entry->next_offset;
}
/* Do some firewalling */
unsigned int ebt_do_table (unsigned int hook, struct sk_buff *skb,
const struct net_device *in, const struct net_device *out,
@ -249,8 +255,7 @@ letsreturn:
/* jump to a udc */
cs[sp].n = i + 1;
cs[sp].chaininfo = chaininfo;
cs[sp].e = (struct ebt_entry *)
(((char *)point) + point->next_offset);
cs[sp].e = ebt_next_entry(point);
i = 0;
chaininfo = (struct ebt_entries *) (base + verdict);
#ifdef CONFIG_NETFILTER_DEBUG
@ -266,8 +271,7 @@ letsreturn:
sp++;
continue;
letscontinue:
point = (struct ebt_entry *)
(((char *)point) + point->next_offset);
point = ebt_next_entry(point);
i++;
}
@ -787,7 +791,7 @@ static int check_chainloops(struct ebt_entries *chain, struct ebt_cl_stack *cl_s
/* this can't be 0, so the loop test is correct */
cl_s[i].cs.n = pos + 1;
pos = 0;
cl_s[i].cs.e = ((void *)e + e->next_offset);
cl_s[i].cs.e = ebt_next_entry(e);
e = (struct ebt_entry *)(hlp2->data);
nentries = hlp2->nentries;
cl_s[i].from = chain_nr;
@ -797,7 +801,7 @@ static int check_chainloops(struct ebt_entries *chain, struct ebt_cl_stack *cl_s
continue;
}
letscontinue:
e = (void *)e + e->next_offset;
e = ebt_next_entry(e);
pos++;
}
return 0;