netfilter: nf_flow_table: remove unnecessary nat flag check code

nf_flow_offload_{ip/ipv6}_hook() check nat flag then, call
nf_flow_nat_{ip/ipv6} but that also check nat flag. so that
nat flag check code in nf_flow_offload_{ip/ipv6}_hook() are unnecessary.

Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/net/netfilter/nf_flow_table_ip.c b/net/netfilter/nf_flow_table_ip.c
index 15ed913..1d291a5 100644 (file)
--- a/net/netfilter/nf_flow_table_ip.c
+++ b/net/netfilter/nf_flow_table_ip.c
@@ -254,8 +254,7 @@ nf_flow_offload_ip_hook(void *priv, struct sk_buff *skb,
        if (nf_flow_state_check(flow, ip_hdr(skb)->protocol, skb, thoff))
                return NF_ACCEPT;
 
-       if (flow->flags & (FLOW_OFFLOAD_SNAT | FLOW_OFFLOAD_DNAT) &&
-           nf_flow_nat_ip(flow, skb, thoff, dir) < 0)
+       if (nf_flow_nat_ip(flow, skb, thoff, dir) < 0)
                return NF_DROP;
 
        flow->timeout = (u32)jiffies + NF_FLOW_TIMEOUT;
@@ -471,8 +470,7 @@ nf_flow_offload_ipv6_hook(void *priv, struct sk_buff *skb,
        if (skb_try_make_writable(skb, sizeof(*ip6h)))
                return NF_DROP;
 
-       if (flow->flags & (FLOW_OFFLOAD_SNAT | FLOW_OFFLOAD_DNAT) &&
-           nf_flow_nat_ipv6(flow, skb, dir) < 0)
+       if (nf_flow_nat_ipv6(flow, skb, dir) < 0)
                return NF_DROP;
 
        flow->timeout = (u32)jiffies + NF_FLOW_TIMEOUT;