netfilter: xtables: remove old comments about reentrancy

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>

net/ipv4/netfilter/ip_tables.c

@@ -434,8 +434,6 @@ ipt_do_table(struct sk_buff *skb,
 			continue;
 		}
 
-		/* Targets which reenter must return
-		   abs. verdicts */
 		tgpar.target   = t->u.kernel.target;
 		tgpar.targinfo = t->data;
 

net/ipv4/netfilter/ipt_REJECT.c

@@ -139,9 +139,6 @@ reject_tg(struct sk_buff *skb, const struct xt_target_param *par)
 {
 	const struct ipt_reject_info *reject = par->targinfo;
 
-	/* WARNING: This code causes reentry within iptables.
-	   This means that the iptables jump stack is now crap.  We
-	   must return an absolute verdict. --RR */
 	switch (reject->with) {
 	case IPT_ICMP_NET_UNREACHABLE:
 		send_unreach(skb, ICMP_NET_UNREACH);

net/ipv6/netfilter/ip6_tables.c

@@ -451,8 +451,6 @@ ip6t_do_table(struct sk_buff *skb,
 			continue;
 		}
 
-		/* Targets which reenter must return
-		   abs. verdicts */
 		tgpar.target   = t->u.kernel.target;
 		tgpar.targinfo = t->data;
 

net/ipv6/netfilter/ip6t_REJECT.c

@@ -179,9 +179,6 @@ reject_tg6(struct sk_buff *skb, const struct xt_target_param *par)
 	struct net *net = dev_net((par->in != NULL) ? par->in : par->out);
 
 	pr_debug("%s: medium point\n", __func__);
-	/* WARNING: This code causes reentry within ip6tables.
-	   This means that the ip6tables jump stack is now crap.  We
-	   must return an absolute verdict. --RR */
 	switch (reject->with) {
 	case IP6T_ICMP6_NO_ROUTE:
 		send_unreach(net, skb, ICMPV6_NOROUTE, par->hooknum);