netfilter: xtables: consolidate open-coded logic
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index 820252a..2455583 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -142,6 +142,12 @@
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 @@
/* 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 @@
sp++;
continue;
letscontinue:
- point = (struct ebt_entry *)
- (((char *)point) + point->next_offset);
+ point = ebt_next_entry(point);
i++;
}
@@ -787,7 +791,7 @@
/* 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 @@
continue;
}
letscontinue:
- e = (void *)e + e->next_offset;
+ e = ebt_next_entry(e);
pos++;
}
return 0;