Added initial support for NDP (IPv6)

Following messages are now handled by PROX
- router_solicitation
- neighbour_solicitation
- router_advertisement
- neighbour_advertisement

The following parameters are supported (through the PROX config file)
- sub mode=ndp
	This will enable handling of router and neighbour solicitation
	and advertisement.
- local ipv6=xxxx:xxxx:xxxxx:xxxx:xxxx:xxxx:xxxx:xxxx
	This will configure the local IPv6 address of the port.
	This parameter is optional. If not specified, the local IPv6
	will be calculated from the EUI.
- global ipv6=xxxx:xxxx:xxxxx:xxxx:xxxx:xxxx:xxxx:xxxx
	This will configure the global IPv6 address of the port.
	This parameter is optional. If not specified, the global IPv6
	will be calculated from the EUI and the router prefix received
	from the router.
- ipv6 router=yes
	This will cause the core to behave as an IPv6 router
	i.e. it will generate Router Advertisement messages
	This is only useful in back to back cases, when no real
	IPv6 router is present in the setup.
- router prefix=xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx
	The router prefix usedin the router advertisement
	The prefix will be used by the node to build an IPv6 global
	address in cases none were configured.

"Unsollicited NA" parameter has been added within the core/task section.
If set to yes (Unsollicited NA=yes), then an unsollicited neighbour
Advertisement is sent at startup

A same core/task cannot support both l3 and ndp mode.

Those messages will be generated or handled when submode
is set to "ndp":
- neighbour sollicitation
- neighbour advertisement
- router sollicitation
- router advertisement

An example configuration is provided: config/ipv6.cfg in which
port 0 / core 1 plays the role of the generator and port 1 /
core 2 plays the role of the swap.

Change-Id: Id0ab32d384448b4cf767fb4a1c486fc023f4f395
Signed-off-by: Xavier Simonart <xavier.simonart@intel.com>

1 files changed, 140 insertions, 0 deletions

diff --git a/VNFs/DPPD-PROX/prox_ipv6.h b/VNFs/DPPD-PROX/prox_ipv6.h
new file mode 100644
index 00000000..48030054
--- /dev/null
+++ b/VNFs/DPPD-PROX/prox_ipv6.h
@@ -0,0 +1,140 @@
+/*
+// Copyright (c) 2020 Intel Corporation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+*/
+
+#ifndef _PROX_IP_V6_H_
+#define _PROX_IP_V6_H_
+
+#include "ip6_addr.h"
+
+#define ALL_NODES_IPV6_MCAST_ADDR		"ff02:0000:0000:0000:0000:0000:0000:0001"	// FF02::1
+#define ALL_ROUTERS_IPV6_MCAST_ADDR		"ff02:0000:0000:0000:0000:0000:0000:0002"	// FF02::2
+
+#define RANDOM_IPV6				"1234:1234:1234:1234:1234:1234:1234:1234"	// Used by PROX as a flag forrandom IP
+
+#define ALL_DHCP_RELAY_AGENTS_AND_SERVERS	"ff02:0000:0000:0000:0000:0000:0001:0002"	// FF02::1:2
+#define ALL_DHCP_SERVERS			"ff05:0000:0000:0000:0000:0000:0001:0003"	// FF02::1:2
+
+#define DHCP_CLIENT_UDP_PORT	546
+#define DHCP_SERVER_UDP_PORT	547
+
+#define PROX_UNSOLLICITED	0
+#define PROX_SOLLICITED		1
+
+#define ICMPv6	0x3a
+
+#define ICMPv6_DU	0x01
+#define ICMPv6_PTB	0x02
+#define ICMPv6_TE	0x03
+#define ICMPv6_PaPr	0x04
+#define ICMPv6_RS	0x85
+#define ICMPv6_RA	0x86
+#define ICMPv6_NS	0x87
+#define ICMPv6_NA	0x88
+#define ICMPv6_RE	0x89
+
+#define ICMPv6_source_link_layer_address	1
+#define ICMPv6_target_link_layer_address	2
+#define ICMPv6_prefix_information		3
+#define ICMPv6_redirect_header			4
+#define ICMPv6_mtu				5
+
+extern struct ipv6_addr null_addr;
+
+struct icmpv6_prefix_option {
+	uint8_t type;
+	uint8_t length;
+	uint8_t prefix_length;
+	uint8_t flag;
+	uint32_t valid_lifetime;
+	uint32_t preferred_lifetime;
+	uint32_t reserved;
+	struct ipv6_addr prefix;
+};
+
+struct icmpv6_option {
+	uint8_t type;
+	uint8_t length;
+	uint8_t data[6];
+}  __attribute__((__packed__));
+
+struct icmpv6 {
+	uint8_t   type;
+	uint8_t   code;
+	uint16_t  checksum;
+};
+
+struct icmpv6_RA {
+	uint8_t   type;
+	uint8_t   code;
+	uint16_t  checksum;
+	uint8_t   hop_limit;
+	uint8_t   bits;
+	uint16_t  router_lifespan;
+	uint32_t  reachable_timeout;
+	uint32_t  retrans_timeout;
+	struct icmpv6_option  options;
+} __attribute__((__packed__));
+
+struct icmpv6_RS {
+	uint8_t   type;
+	uint8_t   code;
+	uint16_t  checksum;
+	uint32_t  reserved;
+	struct icmpv6_option  options;
+} __attribute__((__packed__));
+
+struct icmpv6_NS {
+	uint8_t   type;
+	uint8_t   code;
+	uint16_t  checksum;
+	uint32_t  reserved;
+	struct ipv6_addr target_address;
+	struct icmpv6_option  options;
+} __attribute__((__packed__));
+
+struct icmpv6_NA {
+	uint8_t   type;
+	uint8_t   code;
+	uint16_t  checksum;
+	uint16_t  bits;
+	uint16_t  reserved;
+	struct ipv6_addr destination_address;
+	struct icmpv6_option  options;
+} __attribute__((__packed__));
+
+struct icmpv6_RE {
+	uint8_t   type;
+	uint8_t   code;
+	uint16_t  checksum;
+	uint32_t  reserved;
+	struct ipv6_addr destination_address_hop;
+	struct ipv6_addr destination_address;
+	uint32_t  Options;
+} __attribute__((__packed__));
+
+void set_mcast_mac_from_ipv6(prox_rte_ether_addr *mac, struct ipv6_addr *ipv6_addr);
+char *IP6_Canonical(struct ipv6_addr *addr);
+void set_link_local(struct ipv6_addr *ipv6_addr);
+void set_EUI(struct ipv6_addr *ipv6_addr, prox_rte_ether_addr *mac);
+void create_mac_from_EUI(struct ipv6_addr *ipv6_addr, prox_rte_ether_addr *mac);
+
+struct task_base;
+void build_router_sollicitation(struct rte_mbuf *mbuf, prox_rte_ether_addr *s_addr, struct ipv6_addr *ipv6_s_addr);
+void build_router_advertisement(struct rte_mbuf *mbuf, prox_rte_ether_addr *s_addr, struct ipv6_addr *ipv6_s_addr, struct ipv6_addr *router_prefix);
+void build_neighbour_sollicitation(struct rte_mbuf *mbuf, prox_rte_ether_addr *s_addr, struct ipv6_addr *dst, struct ipv6_addr *src);
+void build_neighbour_advertisement(struct task_base *tbase, struct rte_mbuf *mbuf, prox_rte_ether_addr *target_mac, struct ipv6_addr *ipv6_addr, int sollicited);
+
+#endif /* _PROX_IP_V6_H_ */