netfilter: xtables: collapse conditions in xt_ecn

One simplification of an if clause.

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/net/netfilter/xt_ecn.c b/net/netfilter/xt_ecn.c
index 6ccc35d..3c831a8 100644 (file)
--- a/net/netfilter/xt_ecn.c
+++ b/net/netfilter/xt_ecn.c
@@ -37,9 +37,8 @@ static bool match_tcp(const struct sk_buff *skb, struct xt_action_param *par)
         * be good citizens.
         */
        th = skb_header_pointer(skb, par->thoff, sizeof(_tcph), &_tcph);
-       if (th == NULL) {
+       if (th == NULL)
                return false;
-       }
 
        if (einfo->operation & XT_ECN_OP_MATCH_ECE) {
                if (einfo->invert & XT_ECN_OP_MATCH_ECE) {
@@ -75,14 +74,12 @@ static bool ecn_mt4(const struct sk_buff *skb, struct xt_action_param *par)
 {
        const struct xt_ecn_info *info = par->matchinfo;
 
-       if (info->operation & XT_ECN_OP_MATCH_IP)
-               if (!match_ip(skb, info))
-                       return false;
+       if (info->operation & XT_ECN_OP_MATCH_IP && !match_ip(skb, info))
+               return false;
 
-       if (info->operation & (XT_ECN_OP_MATCH_ECE | XT_ECN_OP_MATCH_CWR)) {
-               if (!match_tcp(skb, par))
-                       return false;
-       }
+       if (info->operation & (XT_ECN_OP_MATCH_ECE | XT_ECN_OP_MATCH_CWR) &&
+           !match_tcp(skb, par))
+               return false;
 
        return true;
 }