[NETFILTER]: Fix incorrect use of skb_make_writable

http://bugzilla.kernel.org/show_bug.cgi?id=9920
The function skb_make_writable returns true or false.

Signed-off-by: Joonwoo Park <joonwpark81@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/bridge/netfilter/ebt_dnat.c b/net/bridge/netfilter/ebt_dnat.c
index e700cbf..1ec671d 100644 (file)
--- a/net/bridge/netfilter/ebt_dnat.c
+++ b/net/bridge/netfilter/ebt_dnat.c
@@ -20,7 +20,7 @@ static int ebt_target_dnat(struct sk_buff *skb, unsigned int hooknr,
 {
        const struct ebt_nat_info *info = data;
 
-       if (skb_make_writable(skb, 0))
+       if (!skb_make_writable(skb, 0))
                return NF_DROP;
 
        memcpy(eth_hdr(skb)->h_dest, info->mac, ETH_ALEN);

diff --git a/net/bridge/netfilter/ebt_redirect.c b/net/bridge/netfilter/ebt_redirect.c
index bfdf2fb..bfb9f74 100644 (file)
--- a/net/bridge/netfilter/ebt_redirect.c
+++ b/net/bridge/netfilter/ebt_redirect.c
@@ -21,7 +21,7 @@ static int ebt_target_redirect(struct sk_buff *skb, unsigned int hooknr,
 {
        const struct ebt_redirect_info *info = data;
 
-       if (skb_make_writable(skb, 0))
+       if (!skb_make_writable(skb, 0))
                return NF_DROP;
 
        if (hooknr != NF_BR_BROUTING)

diff --git a/net/bridge/netfilter/ebt_snat.c b/net/bridge/netfilter/ebt_snat.c
index e252dab..204f996 100644 (file)
--- a/net/bridge/netfilter/ebt_snat.c
+++ b/net/bridge/netfilter/ebt_snat.c
@@ -22,7 +22,7 @@ static int ebt_target_snat(struct sk_buff *skb, unsigned int hooknr,
 {
        const struct ebt_nat_info *info = data;
 
-       if (skb_make_writable(skb, 0))
+       if (!skb_make_writable(skb, 0))
                return NF_DROP;
 
        memcpy(eth_hdr(skb)->h_source, info->mac, ETH_ALEN);

diff --git a/net/ipv4/netfilter/arpt_mangle.c b/net/ipv4/netfilter/arpt_mangle.c
index 45fa4e2..3f4222b 100644 (file)
--- a/net/ipv4/netfilter/arpt_mangle.c
+++ b/net/ipv4/netfilter/arpt_mangle.c
@@ -19,7 +19,7 @@ target(struct sk_buff *skb,
        unsigned char *arpptr;
        int pln, hln;
 
-       if (skb_make_writable(skb, skb->len))
+       if (!skb_make_writable(skb, skb->len))
                return NF_DROP;
 
        arp = arp_hdr(skb);