1 files changed, 76 insertions, 3 deletions
diff --git a/net/ipv6/ila/ila.h b/net/ipv6/ila/ila.h
index 28542cb2b..d08fd2d48 100644
--- a/net/ipv6/ila/ila.h
+++ b/net/ipv6/ila/ila.h
@@ -23,10 +23,76 @@
 #include <net/protocol.h>
 #include <uapi/linux/ila.h>
 
+struct ila_locator {
+	union {
+		__u8            v8[8];
+		__be16          v16[4];
+		__be32          v32[2];
+		__be64		v64;
+	};
+};
+
+struct ila_identifier {
+	union {
+		struct {
+#if defined(__LITTLE_ENDIAN_BITFIELD)
+			u8 __space:4;
+			u8 csum_neutral:1;
+			u8 type:3;
+#elif defined(__BIG_ENDIAN_BITFIELD)
+			u8 type:3;
+			u8 csum_neutral:1;
+			u8 __space:4;
+#else
+#error  "Adjust your <asm/byteorder.h> defines"
+#endif
+			u8 __space2[7];
+		};
+		__u8            v8[8];
+		__be16          v16[4];
+		__be32          v32[2];
+		__be64		v64;
+	};
+};
+
+enum {
+	ILA_ATYPE_IID = 0,
+	ILA_ATYPE_LUID,
+	ILA_ATYPE_VIRT_V4,
+	ILA_ATYPE_VIRT_UNI_V6,
+	ILA_ATYPE_VIRT_MULTI_V6,
+	ILA_ATYPE_RSVD_1,
+	ILA_ATYPE_RSVD_2,
+	ILA_ATYPE_RSVD_3,
+};
+
+#define CSUM_NEUTRAL_FLAG	htonl(0x10000000)
+
+struct ila_addr {
+	union {
+		struct in6_addr addr;
+		struct {
+			struct ila_locator loc;
+			struct ila_identifier ident;
+		};
+	};
+};
+
+static inline struct ila_addr *ila_a2i(struct in6_addr *addr)
+{
+	return (struct ila_addr *)addr;
+}
+
+static inline bool ila_addr_is_ila(struct ila_addr *iaddr)
+{
+	return (iaddr->ident.type != ILA_ATYPE_IID);
+}
+
 struct ila_params {
-	__be64 locator;
-	__be64 locator_match;
+	struct ila_locator locator;
+	struct ila_locator locator_match;
 	__wsum csum_diff;
+	u8 csum_mode;
 };
 
 static inline __wsum compute_csum_diff8(const __be32 *from, const __be32 *to)
@@ -38,7 +104,14 @@ static inline __wsum compute_csum_diff8(const __be32 *from, const __be32 *to)
 	return csum_partial(diff, sizeof(diff), 0);
 }
 
-void update_ipv6_locator(struct sk_buff *skb, struct ila_params *p);
+static inline bool ila_csum_neutral_set(struct ila_identifier ident)
+{
+	return !!(ident.csum_neutral);
+}
+
+void ila_update_ipv6_locator(struct sk_buff *skb, struct ila_params *p);
+
+void ila_init_saved_csum(struct ila_params *p);
 
 int ila_lwt_init(void);
 void ila_lwt_fini(void);