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authorRusty Russell <rusty@rustcorp.com.au>2012-03-22 12:27:06 +0000
committerDavid S. Miller <davem@davemloft.net>2012-03-22 22:36:17 -0400
commit523f610e1be2a4afca605962e137064378883c5f (patch)
tree82923297355fccb70a03c5d2108bc5a6030212a2 /net
parent5d5440a835710d09f0ef18da5000541ec98b537a (diff)
downloadlinux-523f610e1be2a4afca605962e137064378883c5f.tar.bz2
netfilter: remove forward module param confusion.
It used to be an int, and it got changed to a bool parameter at least 7 years ago. It happens that NF_ACCEPT and NF_DROP are 0 and 1, so this works, but it's unclear, and the check that it's in range is not required. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/netfilter/iptable_filter.c9
-rw-r--r--net/ipv6/netfilter/ip6table_filter.c9
2 files changed, 4 insertions, 14 deletions
diff --git a/net/ipv4/netfilter/iptable_filter.c b/net/ipv4/netfilter/iptable_filter.c
index 0e58f09e59fb..851acec852d2 100644
--- a/net/ipv4/netfilter/iptable_filter.c
+++ b/net/ipv4/netfilter/iptable_filter.c
@@ -52,7 +52,7 @@ iptable_filter_hook(unsigned int hook, struct sk_buff *skb,
static struct nf_hook_ops *filter_ops __read_mostly;
/* Default to forward because I got too much mail already. */
-static bool forward = NF_ACCEPT;
+static bool forward = true;
module_param(forward, bool, 0000);
static int __net_init iptable_filter_net_init(struct net *net)
@@ -64,7 +64,7 @@ static int __net_init iptable_filter_net_init(struct net *net)
return -ENOMEM;
/* Entry 1 is the FORWARD hook */
((struct ipt_standard *)repl->entries)[1].target.verdict =
- -forward - 1;
+ forward ? -NF_ACCEPT - 1 : -NF_DROP - 1;
net->ipv4.iptable_filter =
ipt_register_table(net, &packet_filter, repl);
@@ -88,11 +88,6 @@ static int __init iptable_filter_init(void)
{
int ret;
- if (forward < 0 || forward > NF_MAX_VERDICT) {
- pr_err("iptables forward must be 0 or 1\n");
- return -EINVAL;
- }
-
ret = register_pernet_subsys(&iptable_filter_net_ops);
if (ret < 0)
return ret;
diff --git a/net/ipv6/netfilter/ip6table_filter.c b/net/ipv6/netfilter/ip6table_filter.c
index a8f6da97e3b2..325e59a0224f 100644
--- a/net/ipv6/netfilter/ip6table_filter.c
+++ b/net/ipv6/netfilter/ip6table_filter.c
@@ -44,7 +44,7 @@ ip6table_filter_hook(unsigned int hook, struct sk_buff *skb,
static struct nf_hook_ops *filter_ops __read_mostly;
/* Default to forward because I got too much mail already. */
-static bool forward = NF_ACCEPT;
+static bool forward = true;
module_param(forward, bool, 0000);
static int __net_init ip6table_filter_net_init(struct net *net)
@@ -56,7 +56,7 @@ static int __net_init ip6table_filter_net_init(struct net *net)
return -ENOMEM;
/* Entry 1 is the FORWARD hook */
((struct ip6t_standard *)repl->entries)[1].target.verdict =
- -forward - 1;
+ forward ? -NF_ACCEPT - 1 : -NF_DROP - 1;
net->ipv6.ip6table_filter =
ip6t_register_table(net, &packet_filter, repl);
@@ -80,11 +80,6 @@ static int __init ip6table_filter_init(void)
{
int ret;
- if (forward < 0 || forward > NF_MAX_VERDICT) {
- pr_err("iptables forward must be 0 or 1\n");
- return -EINVAL;
- }
-
ret = register_pernet_subsys(&ip6table_filter_net_ops);
if (ret < 0)
return ret;