Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / linux / netfilter / ipset / pfxlen.h

diff --git a/kernel/include/linux/netfilter/ipset/pfxlen.h b/kernel/include/linux/netfilter/ipset/pfxlen.h
new file mode 100644 (file)
index 0000000..1afbb94
--- /dev/null
+++ b/kernel/include/linux/netfilter/ipset/pfxlen.h
@@ -0,0 +1,53 @@
+#ifndef _PFXLEN_H
+#define _PFXLEN_H
+
+#include <asm/byteorder.h>
+#include <linux/netfilter.h>
+#include <net/tcp.h>
+
+/* Prefixlen maps, by Jan Engelhardt  */
+extern const union nf_inet_addr ip_set_netmask_map[];
+extern const union nf_inet_addr ip_set_hostmask_map[];
+
+static inline __be32
+ip_set_netmask(u8 pfxlen)
+{
+       return ip_set_netmask_map[pfxlen].ip;
+}
+
+static inline const __be32 *
+ip_set_netmask6(u8 pfxlen)
+{
+       return &ip_set_netmask_map[pfxlen].ip6[0];
+}
+
+static inline u32
+ip_set_hostmask(u8 pfxlen)
+{
+       return (__force u32) ip_set_hostmask_map[pfxlen].ip;
+}
+
+static inline const __be32 *
+ip_set_hostmask6(u8 pfxlen)
+{
+       return &ip_set_hostmask_map[pfxlen].ip6[0];
+}
+
+extern u32 ip_set_range_to_cidr(u32 from, u32 to, u8 *cidr);
+
+#define ip_set_mask_from_to(from, to, cidr)    \
+do {                                           \
+       from &= ip_set_hostmask(cidr);          \
+       to = from | ~ip_set_hostmask(cidr);     \
+} while (0)
+
+static inline void
+ip6_netmask(union nf_inet_addr *ip, u8 prefix)
+{
+       ip->ip6[0] &= ip_set_netmask6(prefix)[0];
+       ip->ip6[1] &= ip_set_netmask6(prefix)[1];
+       ip->ip6[2] &= ip_set_netmask6(prefix)[2];
+       ip->ip6[3] &= ip_set_netmask6(prefix)[3];
+}
+
+#endif /*_PFXLEN_H */