GRE over IPv6
Refactors the GRE node to work with both IPv4 and IPv6 transports.
Note that this changes the binary configuration API to support both
address families; each address uses the same memory for either
address type and a flag to indicate which is in use.
The CLI and VAT syntax remains unchanged; the code detects whether
an IPv4 or an IPv6 address was given.
Configuration examples:
IPv4 CLI: create gre tunnel src 192.168.1.1 dst 192.168.1.2
IPv6 CLI: create gre tunnel src 2620:124:9000::1 dst 2620:124:9000::2
IPv4 VAT: gre_add_del_tunnel src 192.168.1.1 dst 192.168.1.2
IPv6 VAT: gre_add_del_tunnel src 2620:124:9000::1 dst 2620:124:9000::2
Change-Id: Ica8ee775dc101047fb8cd41617ddc8fafc2741b0
Signed-off-by: Ciara Loftus <ciara.loftus@intel.com>
diff --git a/src/vnet/gre/gre.h b/src/vnet/gre/gre.h
index 788cba2..ad3e025 100644
--- a/src/vnet/gre/gre.h
+++ b/src/vnet/gre/gre.h
@@ -21,8 +21,6 @@
#include <vnet/vnet.h>
#include <vnet/gre/packet.h>
#include <vnet/ip/ip.h>
-#include <vnet/ip/ip4.h>
-#include <vnet/ip/ip4_packet.h>
#include <vnet/pg/pg.h>
#include <vnet/ip/format.h>
#include <vnet/adj/adj_types.h>
@@ -87,11 +85,11 @@
/**
* The tunnel's source/local address
*/
- ip4_address_t tunnel_src;
+ ip46_address_t tunnel_src;
/**
* The tunnel's destination/remote address
*/
- ip4_address_t tunnel_dst;
+ fib_prefix_t tunnel_dst;
/**
* The FIB in which the src.dst address are present
*/
@@ -142,10 +140,16 @@
* Hash tables mapping name/protocol to protocol info index.
*/
uword * protocol_info_by_name, * protocol_info_by_protocol;
+
/**
- * Hash mapping src/dst addr pair to tunnel
+ * Hash mapping ipv4 src/dst addr pair to tunnel
*/
- uword * tunnel_by_key;
+ uword * tunnel_by_key4;
+
+ /**
+ * Hash mapping ipv6 src/dst addr pair to tunnel
+ */
+ uword * tunnel_by_key6;
/**
* Free vlib hw_if_indices.
@@ -176,6 +180,14 @@
gre_header_t gre;
}) ip4_and_gre_header_t;
+/**
+ * @brief IPv6 and GRE header.
+ */
+typedef CLIB_PACKED (struct {
+ ip6_header_t ip6;
+ gre_header_t gre;
+}) ip6_and_gre_header_t;
+
always_inline gre_protocol_info_t *
gre_get_protocol_info (gre_main_t * em, gre_protocol_t protocol)
{
@@ -204,7 +216,8 @@
format_function_t format_gre_header;
format_function_t format_gre_header_with_length;
-extern vlib_node_registration_t gre_input_node;
+extern vlib_node_registration_t gre4_input_node;
+extern vlib_node_registration_t gre6_input_node;
extern vnet_device_class_t gre_device_class;
extern vnet_device_class_t gre_device_teb_class;
@@ -228,7 +241,8 @@
typedef struct {
u8 is_add;
- ip4_address_t src, dst;
+ ip46_address_t src, dst;
+ u8 is_ipv6;
u32 outer_fib_id;
u8 teb;
} vnet_gre_add_del_tunnel_args_t;