netfilter: nf_ct_gre: add unsigned int array to define timeouts

This patch adds an array to define the default GRE timeouts.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/net/netfilter/nf_conntrack_proto_gre.c b/net/netfilter/nf_conntrack_proto_gre.c
index f033879..8144f22 100644 (file)
--- a/net/netfilter/nf_conntrack_proto_gre.c
+++ b/net/netfilter/nf_conntrack_proto_gre.c
@@ -41,8 +41,16 @@
 #include <linux/netfilter/nf_conntrack_proto_gre.h>
 #include <linux/netfilter/nf_conntrack_pptp.h>
 
-#define GRE_TIMEOUT            (30 * HZ)
-#define GRE_STREAM_TIMEOUT     (180 * HZ)
+enum grep_conntrack {
+       GRE_CT_UNREPLIED,
+       GRE_CT_REPLIED,
+       GRE_CT_MAX
+};
+
+static unsigned int gre_timeouts[GRE_CT_MAX] = {
+       [GRE_CT_UNREPLIED]      = 30*HZ,
+       [GRE_CT_REPLIED]        = 180*HZ,
+};
 
 static int proto_gre_net_id __read_mostly;
 struct netns_proto_gre {
@@ -259,8 +267,8 @@ static bool gre_new(struct nf_conn *ct, const struct sk_buff *skb,
 
        /* initialize to sane value.  Ideally a conntrack helper
         * (e.g. in case of pptp) is increasing them */
-       ct->proto.gre.stream_timeout = GRE_STREAM_TIMEOUT;
-       ct->proto.gre.timeout = GRE_TIMEOUT;
+       ct->proto.gre.stream_timeout = gre_timeouts[GRE_CT_REPLIED];
+       ct->proto.gre.timeout = gre_timeouts[GRE_CT_UNREPLIED];
 
        return true;
 }