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authorFred L. Templin <fred.l.templin@boeing.com>2007-11-29 22:11:40 +1100
committerDavid S. Miller <davem@davemloft.net>2008-01-28 14:55:09 -0800
commitc7dc89c0ac8e7c3796bff91becf58ccdbcaf9f18 (patch)
treee876ccadf29a90b7a211522aeccfd42255dab586 /include
parentdf97c708d5e6eebdd9ded1fa588eae09acf53793 (diff)
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[IPV6]: Add RFC4214 support
This patch includes support for the Intra-Site Automatic Tunnel Addressing Protocol (ISATAP) per RFC4214. It uses the SIT module, and is configured using extensions to the "iproute2" utility. The diffs are specific to the Linux 2.6.24-rc2 kernel distribution. This version includes the diff for ./include/linux/if.h which was missing in the v2.4 submission and is needed to make the patch compile. The patch has been installed, compiled and tested in a clean 2.6.24-rc2 kernel build area. Signed-off-by: Fred L. Templin <fred.l.templin@boeing.com> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/if.h1
-rw-r--r--include/linux/if_tunnel.h3
-rw-r--r--include/linux/in.h8
-rw-r--r--include/net/addrconf.h19
4 files changed, 31 insertions, 0 deletions
diff --git a/include/linux/if.h b/include/linux/if.h
index 186070d5c54..5c9d1fa93fe 100644
--- a/include/linux/if.h
+++ b/include/linux/if.h
@@ -63,6 +63,7 @@
#define IFF_MASTER_ALB 0x10 /* bonding master, balance-alb. */
#define IFF_BONDING 0x20 /* bonding master or slave */
#define IFF_SLAVE_NEEDARP 0x40 /* need ARPs for validation */
+#define IFF_ISATAP 0x80 /* ISATAP interface (RFC4214) */
#define IF_GET_IFACE 0x0001 /* for querying only */
#define IF_GET_PROTO 0x0002
diff --git a/include/linux/if_tunnel.h b/include/linux/if_tunnel.h
index 660b5010c2d..228eb4eb312 100644
--- a/include/linux/if_tunnel.h
+++ b/include/linux/if_tunnel.h
@@ -17,6 +17,9 @@
#define GRE_FLAGS __constant_htons(0x00F8)
#define GRE_VERSION __constant_htons(0x0007)
+/* i_flags values for SIT mode */
+#define SIT_ISATAP 0x0001
+
struct ip_tunnel_parm
{
char name[IFNAMSIZ];
diff --git a/include/linux/in.h b/include/linux/in.h
index 3975cbf52f2..a8f00cac8f7 100644
--- a/include/linux/in.h
+++ b/include/linux/in.h
@@ -253,6 +253,14 @@ struct sockaddr_in {
#define ZERONET(x) (((x) & htonl(0xff000000)) == htonl(0x00000000))
#define LOCAL_MCAST(x) (((x) & htonl(0xFFFFFF00)) == htonl(0xE0000000))
+/* Special-Use IPv4 Addresses (RFC3330) */
+#define PRIVATE_10(x) (((x) & htonl(0xff000000)) == htonl(0x0A000000))
+#define LINKLOCAL_169(x) (((x) & htonl(0xffff0000)) == htonl(0xA9FE0000))
+#define PRIVATE_172(x) (((x) & htonl(0xfff00000)) == htonl(0xAC100000))
+#define TEST_192(x) (((x) & htonl(0xffffff00)) == htonl(0xC0000200))
+#define ANYCAST_6TO4(x) (((x) & htonl(0xffffff00)) == htonl(0xC0586300))
+#define PRIVATE_192(x) (((x) & htonl(0xffff0000)) == htonl(0xC0A80000))
+#define TEST_198(x) (((x) & htonl(0xfffe0000)) == htonl(0xC6120000))
#endif
#endif /* _LINUX_IN_H */
diff --git a/include/net/addrconf.h b/include/net/addrconf.h
index bccc2feb99d..c56827da0de 100644
--- a/include/net/addrconf.h
+++ b/include/net/addrconf.h
@@ -17,6 +17,7 @@
#define IPV6_MAX_ADDRESSES 16
+#include <linux/in.h>
#include <linux/in6.h>
struct prefix_info {
@@ -249,6 +250,24 @@ static inline int ipv6_addr_is_ll_all_routers(const struct in6_addr *addr)
addr->s6_addr32[3] == htonl(0x00000002));
}
+static inline int ipv6_isatap_eui64(u8 *eui, __be32 addr)
+{
+ eui[0] = (ZERONET(addr) || PRIVATE_10(addr) || LOOPBACK(addr) ||
+ LINKLOCAL_169(addr) || PRIVATE_172(addr) || TEST_192(addr) ||
+ ANYCAST_6TO4(addr) || PRIVATE_192(addr) || TEST_198(addr) ||
+ MULTICAST(addr) || BADCLASS(addr)) ? 0x00 : 0x02;
+ eui[1] = 0;
+ eui[2] = 0x5E;
+ eui[3] = 0xFE;
+ memcpy (eui+4, &addr, 4);
+ return 0;
+}
+
+static inline int ipv6_addr_is_isatap(const struct in6_addr *addr)
+{
+ return ((addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE));
+}
+
#ifdef CONFIG_PROC_FS
extern int if6_proc_init(void);
extern void if6_proc_exit(void);