speedup checking for loops
diff --git a/libebtc.c b/libebtc.c
index 02003a7..f76a04c 100644
--- a/libebtc.c
+++ b/libebtc.c
@@ -1019,8 +1019,6 @@
verdict = ((struct ebt_standard_target *)(e->t))->verdict;
if (verdict < 0)
goto letscontinue;
- entries2 = replace->chains[verdict + NF_BR_NUMHOOKS];
- entries2->hook_mask |= entries->hook_mask;
/* Now see if we've been here before */
for (k = 0; k < sp; k++)
if (stack[k].chain_nr == verdict + NF_BR_NUMHOOKS) {
@@ -1029,6 +1027,11 @@
replace->chains[stack[k].chain_nr]->name);
goto free_stack;
}
+ entries2 = replace->chains[verdict + NF_BR_NUMHOOKS];
+ /* check if we've dealt with this chain already */
+ if (entries2->hook_mask & (1<<i))
+ goto letscontinue;
+ entries2->hook_mask |= entries->hook_mask;
/* Jump to the chain, make sure we know how to get back */
stack[sp].chain_nr = chain_nr;
stack[sp].n = j;