[IPV6] MIP6: Add Mobility header definition.

Add Mobility header definition for Mobile IPv6.
Based on MIPL2 kernel patch.

This patch was also written by: Antti Tuominen <anttit@tcs.hut.fi>

Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org>
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/linux/in6.h b/include/linux/in6.h
index 086ec2a..d776829 100644 (file)
--- a/include/linux/in6.h
+++ b/include/linux/in6.h
@@ -134,6 +134,7 @@ struct in6_flowlabel_req
 #define IPPROTO_ICMPV6         58      /* ICMPv6                       */
 #define IPPROTO_NONE           59      /* IPv6 no next header          */
 #define IPPROTO_DSTOPTS                60      /* IPv6 destination options     */
+#define IPPROTO_MH             135     /* IPv6 mobility header         */
 
 /*
  *     IPv6 TLV options.

diff --git a/include/net/flow.h b/include/net/flow.h
index 21d988b..e052291 100644 (file)
--- a/include/net/flow.h
+++ b/include/net/flow.h
@@ -72,12 +72,21 @@ struct flowi {
                } dnports;
 
                __u32           spi;
+
+#ifdef CONFIG_IPV6_MIP6
+               struct {
+                       __u8    type;
+               } mht;
+#endif
        } uli_u;
 #define fl_ip_sport    uli_u.ports.sport
 #define fl_ip_dport    uli_u.ports.dport
 #define fl_icmp_type   uli_u.icmpt.type
 #define fl_icmp_code   uli_u.icmpt.code
 #define fl_ipsec_spi   uli_u.spi
+#ifdef CONFIG_IPV6_MIP6
+#define fl_mh_type     uli_u.mht.type
+#endif
        __u32           secid;  /* used by xfrm; see secid.txt */
 } __attribute__((__aligned__(BITS_PER_LONG/8)));
 

diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 8e6ec60..72bf47b 100644 (file)
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -40,6 +40,7 @@
 #define NEXTHDR_ICMP           58      /* ICMP for IPv6. */
 #define NEXTHDR_NONE           59      /* No next header */
 #define NEXTHDR_DEST           60      /* Destination options header. */
+#define NEXTHDR_MOBILITY       135     /* Mobility header. */
 
 #define NEXTHDR_MAX            255
 

diff --git a/include/net/mip6.h b/include/net/mip6.h
index 42b65ba..fd43178 100644 (file)
--- a/include/net/mip6.h
+++ b/include/net/mip6.h
@@ -28,6 +28,29 @@
 #define MIP6_OPT_PAD_1 0
 #define MIP6_OPT_PAD_N 1
 
+/*
+ * Mobility Header
+ */
+struct ip6_mh {
+       __u8    ip6mh_proto;
+       __u8    ip6mh_hdrlen;
+       __u8    ip6mh_type;
+       __u8    ip6mh_reserved;
+       __u16   ip6mh_cksum;
+       /* Followed by type specific messages */
+       __u8    data[0];
+} __attribute__ ((__packed__));
+
+#define IP6_MH_TYPE_BRR                0   /* Binding Refresh Request */
+#define IP6_MH_TYPE_HOTI       1   /* HOTI Message   */
+#define IP6_MH_TYPE_COTI       2   /* COTI Message  */
+#define IP6_MH_TYPE_HOT                3   /* HOT Message   */
+#define IP6_MH_TYPE_COT                4   /* COT Message  */
+#define IP6_MH_TYPE_BU         5   /* Binding Update */
+#define IP6_MH_TYPE_BACK       6   /* Binding ACK */
+#define IP6_MH_TYPE_BERROR     7   /* Binding Error */
+#define IP6_MH_TYPE_MAX                IP6_MH_TYPE_BERROR
+
 extern int mip6_init(void);
 extern void mip6_fini(void);