+static inline const struct nf_conntrack_zone *
+nf_ct_zone(const struct nf_conn *ct)
+{
+ const struct nf_conntrack_zone *nf_ct_zone = NULL;
+
+#ifdef CONFIG_NF_CONNTRACK_ZONES
+ nf_ct_zone = nf_ct_ext_find(ct, NF_CT_EXT_ZONE);
+#endif
+ return nf_ct_zone ? nf_ct_zone : &nf_ct_zone_dflt;
+}
+
+static inline const struct nf_conntrack_zone *
+nf_ct_zone_init(struct nf_conntrack_zone *zone, u16 id, u8 dir, u8 flags)
+{
+ zone->id = id;
+ zone->flags = flags;
+ zone->dir = dir;
+
+ return zone;
+}
+
+static inline const struct nf_conntrack_zone *
+nf_ct_zone_tmpl(const struct nf_conn *tmpl, const struct sk_buff *skb,
+ struct nf_conntrack_zone *tmp)
+{
+ const struct nf_conntrack_zone *zone;
+
+ if (!tmpl)
+ return &nf_ct_zone_dflt;
+
+ zone = nf_ct_zone(tmpl);
+ if (zone->flags & NF_CT_FLAG_MARK)
+ zone = nf_ct_zone_init(tmp, skb->mark, zone->dir, 0);
+
+ return zone;
+}