Generalize extensions support

Get rid of the structure based extensions and introduce a blob for
the extensions. Thus we can support more extension types easily.

1 files changed, 13 insertions, 0 deletions

diff --git a/kernel/include/linux/netfilter/ipset/ip_set.h b/kernel/include/linux/netfilter/ipset/ip_set.h
index e358575..b5faae5 100644
--- a/kernel/include/linux/netfilter/ipset/ip_set.h
+++ b/kernel/include/linux/netfilter/ipset/ip_set.h
@@ -67,6 +67,17 @@ enum ip_set_ext_id {
 	IPSET_EXT_ID_MAX,
 };
 
+/* Extension type */
+struct ip_set_ext_type {
+	enum ip_set_extension type;
+	enum ipset_cadt_flags flag;
+	/* Size and minimal alignment */
+	u8 len;
+	u8 align;
+};
+
+extern const struct ip_set_ext_type ip_set_extensions[];
+
 struct ip_set_ext {
 	u64 packets;
 	u64 bytes;
@@ -284,6 +295,8 @@ extern void *ip_set_alloc(size_t size);
 extern void ip_set_free(void *members);
 extern int ip_set_get_ipaddr4(struct nlattr *nla,  __be32 *ipaddr);
 extern int ip_set_get_ipaddr6(struct nlattr *nla, union nf_inet_addr *ipaddr);
+extern size_t ip_set_elem_len(struct ip_set *set, struct nlattr *tb[],
+			      size_t len);
 extern int ip_set_get_extensions(struct ip_set *set, struct nlattr *tb[],
 				 struct ip_set_ext *ext);