4 files changed, 83 insertions, 4 deletions
diff --git a/kernel/include/linux/netfilter_ipv4/ip_set.h b/kernel/include/linux/netfilter_ipv4/ip_set.h
index 92a746e..b8c7202 100644
--- a/kernel/include/linux/netfilter_ipv4/ip_set.h
+++ b/kernel/include/linux/netfilter_ipv4/ip_set.h
@@ -297,6 +297,7 @@ static inline int bitmap_bytes(ip_set_ip_t a, ip_set_ip_t b)
 }
 
 #ifdef __KERNEL__
+#include <linux/netfilter_ipv4/ip_set_compat.h>
 
 #define ip_set_printk(format, args...) 			\
 	do {							\
diff --git a/kernel/include/linux/netfilter_ipv4/ip_set_compat.h b/kernel/include/linux/netfilter_ipv4/ip_set_compat.h
new file mode 100644
index 0000000..8803d4f
--- /dev/null
+++ b/kernel/include/linux/netfilter_ipv4/ip_set_compat.h
@@ -0,0 +1,70 @@
+#ifndef _IP_SET_COMPAT_H
+#define _IP_SET_COMPAT_H
+
+#ifdef __KERNEL__
+#include <linux/version.h>
+
+/* Arrgh */
+#ifdef MODULE
+#define __MOD_INC(foo)		__MOD_INC_USE_COUNT(foo)
+#define __MOD_DEC(foo)		__MOD_DEC_USE_COUNT(foo)
+#else
+#define __MOD_INC(foo)
+#define __MOD_DEC(foo)
+#endif
+
+/* Backward compatibility */
+#ifndef __nocast
+#define __nocast
+#endif
+#ifndef __bitwise__
+#define __bitwise__
+#endif
+
+/* Compatibility glue code */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
+#include <linux/interrupt.h>
+#define DEFINE_RWLOCK(x)                rwlock_t x = RW_LOCK_UNLOCKED
+#define try_module_get(x)               (__MOD_INC(x), 1)
+#define module_put(x)                   __MOD_DEC(x)
+#define __clear_bit(nr, addr)		clear_bit(nr, addr)
+#define __set_bit(nr, addr)		set_bit(nr, addr)
+#define __test_and_set_bit(nr, addr)	test_and_set_bit(nr, addr)
+#define __test_and_clear_bit(nr, addr)	test_and_clear_bit(nr, addr)
+
+typedef unsigned __bitwise__ gfp_t;
+
+static inline void *kzalloc(size_t size, gfp_t flags)
+{
+	void *data = kmalloc(size, flags);
+	
+	if (data)
+		memset(data, 0, size);
+	
+	return data;
+}
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+#define __KMEM_CACHE_T__	kmem_cache_t
+#else
+#define __KMEM_CACHE_T__	struct kmem_cache
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,22)
+#define ip_hdr(skb)		((skb)->nh.iph)
+#define skb_mac_header(skb)	((skb)->mac.raw)
+#define eth_hdr(skb)		((struct ethhdr *)skb_mac_header(skb))
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23)
+#define KMEM_CACHE_CREATE(name, size) \
+	kmem_cache_create(name, size, 0, 0, NULL, NULL)
+#else
+#define KMEM_CACHE_CREATE(name, size) \
+	kmem_cache_create(name, size, 0, 0, NULL)
+#endif
+  
+
+#endif /* __KERNEL__ */
+#endif /* _IP_SET_COMPAT_H */   
diff --git a/kernel/include/linux/netfilter_ipv4/ip_set_ipmap.h b/kernel/include/linux/netfilter_ipv4/ip_set_ipmap.h
index 2435102..e3390be 100644
--- a/kernel/include/linux/netfilter_ipv4/ip_set_ipmap.h
+++ b/kernel/include/linux/netfilter_ipv4/ip_set_ipmap.h
@@ -25,7 +25,7 @@ struct ip_set_req_ipmap {
 	ip_set_ip_t ip;
 };
 
-unsigned int
+static unsigned int
 mask_to_bits(ip_set_ip_t mask)
 {
 	unsigned int bits = 32;
@@ -41,7 +41,7 @@ mask_to_bits(ip_set_ip_t mask)
 	return bits;
 }
 
-ip_set_ip_t
+static ip_set_ip_t
 range_to_mask(ip_set_ip_t from, ip_set_ip_t to, unsigned int *bits)
 {
 	ip_set_ip_t mask = 0xFFFFFFFE;
diff --git a/kernel/include/linux/netfilter_ipv4/ip_set_malloc.h b/kernel/include/linux/netfilter_ipv4/ip_set_malloc.h
index 30701f4..d22bed7 100644
--- a/kernel/include/linux/netfilter_ipv4/ip_set_malloc.h
+++ b/kernel/include/linux/netfilter_ipv4/ip_set_malloc.h
@@ -5,10 +5,17 @@
 
 static size_t max_malloc_size = 0, max_page_size = 0;
 
-static inline bool init_max_page_size(void)
+static inline int init_max_page_size(void)
 {
+/* Compatibility glues to support 2.4.36 */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
+#define __GFP_NOWARN		0
+
+	/* Guaranteed: slab.c */
+	max_malloc_size = max_page_size = 131072;
+#else
 	size_t page_size = 0;
-	
+
 #define CACHE(x) if (max_page_size == 0 || x < max_page_size)	\
 			page_size = x;
 #include <linux/kmalloc_sizes.h>
@@ -21,6 +28,7 @@ static inline bool init_max_page_size(void)
 
 		return 1;
 	}
+#endif
 	return 0;
 }