--- /dev/null
+/******************************************************************************
+ * Copyright (c) 2013 IBM Corporation
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ * IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#ifndef _IPV6_H_
+#define _IPV6_H_
+
+#include <stdint.h>
+#include <netlib/ethernet.h>
+
+#define __IPV6_DEBUG__
+
+#ifdef __IPV6_DEBUG__
+#define IPV6_DEBUG_PRINT(format, ...) do { printf(format, ## __VA_ARGS__); } while (0)
+#else
+#define IPV6_DEBUG_PRINT(format, ...)
+#endif
+
+#define IPV6_ADDR_LENGTH 16 /* Size of IPv6 adress in bytes */
+#define IPV6_LL_PREFIX 0xFE80000000000000ULL
+#define IPV6_SOLIC_NODE_PREFIX 0xFF02000000000000ULL
+#define IPV6_SOLIC_NODE_IFACE_ID 0x00000001FF000000ULL
+
+/**
+ * An IPv6 Address
+ */
+typedef union {
+ uint8_t addr[IPV6_ADDR_LENGTH];
+ struct {
+ uint64_t prefix;
+ uint64_t interface_id;
+ } part;
+} ip6_addr_t;
+
+typedef struct {
+ uint8_t type;
+ uint8_t pad[7];
+ union {
+ ip6_addr_t v6;
+ char v4[4];
+ } addr;
+} netaddr_t;
+
+/** \struct prefix_info
+ *
+ * List of Prefixes we have adresses from
+ * Used for internal purposes, information derived from prefix option
+ * in Router Advertisements
+ * See RFC 4861 section 4.6.2
+ */
+struct prefix_info {
+ uint64_t prefix;
+ uint8_t on_link:1, /* When set prefix can be used for on-link
+ * determination */
+ autoconf:1, /* Prefix can be used for stateless address
+ * configuration */
+ reserved1:6;
+ uint32_t valid_lifetime; /* Time until prefix expires */
+ uint32_t preferred_lifetime; /* Time until prefix becomes deprecated */
+ uint32_t start_time; /* Time when received */
+ uint32_t reserved2;
+ struct prefix_info *next;
+};
+
+
+/* List of IPv6 addresses */
+struct ip6addr_list_entry {
+ ip6_addr_t addr;
+ struct prefix_info prfx_info;
+ struct ip6addr_list_entry *next;
+};
+
+/** \struct ip6hdr
+ * A header for IPv6 packets.
+ * For more information see RFC 2460
+ */
+struct ip6hdr {
+ uint32_t ver_tc_fl; /**< Version, Traffic class, Flow label */
+ uint16_t pl; /**< Payload length */
+ uint8_t nh; /**< Next header */
+ uint8_t hl; /**< Hop limit */
+ ip6_addr_t src; /**< IPv6 source address */
+ ip6_addr_t dst; /**< IPv6 destination address */
+} __attribute((packed));
+
+/** \struct packeth
+ * Struct with pointers to headers within a packet
+ */
+struct packeth {
+ struct ethhdr *ethh;
+ struct ip6hdr *ip6h;
+ struct icmp6hdr *icmp6h;
+ struct udphdr *udph;
+ /* ... */
+};
+
+/** \struct parseip6_state
+ * Stores information about state of IPv6 address parser
+ */
+struct parseip6_state {
+ char *lookahead;
+ char *ptr;
+ const char *addr;
+ int state;
+ int s1ctr;
+ int s2ctr;
+ int blocknr;
+ int zeroblocks;
+ int i;
+ int done;
+ int errorcode;
+};
+
+/** \struct ip6_config
+ * Stores flags wheter we use Stateless- or Stateful Autoconfiguration or DHCPv6
+ */
+struct ip6_config {
+ uint8_t managed_mode:1,
+ other_config:1,
+ reserved:6;
+} ip6_state;
+
+/******************** VARIABLES **********************************************/
+/* Function pointer send_ip. Points either to send_ipv4() or send_ipv6() */
+extern int (*send_ip) (int fd, void *, int);
+
+/* IPv6 link-local multicast addresses */
+struct ip6addr_list_entry all_routers_ll; // Routers
+struct ip6addr_list_entry all_dhcpv6_ll; // DHCPv6 servers
+struct ip6addr_list_entry all_nodes_ll; // All IPv6 nodes
+
+/* List of Ipv6 Addresses */
+struct ip6addr_list_entry *first_ip6;
+struct ip6addr_list_entry *last_ip6;
+
+/* Neighbor cache */
+struct neighbor *first_neighbor;
+struct neighbor *last_neighbor;
+
+/* Router list */
+struct router *first_router;
+struct router *last_router;
+
+/******************** FUNCTIONS *********************************************/
+/* Handles IPv6-packets that are detected by receive_ether. */
+int8_t handle_ipv6(int fd, uint8_t * ip6_packet, int32_t packetsize);
+
+/* Fill IPv6 header */
+void fill_ip6hdr(uint8_t * packet, uint16_t packetsize,
+ uint8_t ip_proto, ip6_addr_t *ip6_src, ip6_addr_t *ip6_dst);
+
+/* Set own IPv6 address */
+void set_ipv6_address(int fd, ip6_addr_t *own_ip6);
+
+/* Get own IPv6 address */
+ip6_addr_t *get_ipv6_address(void);
+
+/* Create link-local address from a given Mac Address */
+ip6_addr_t * ip6_create_ll_address (const uint8_t *own_mac);
+
+/* For a given MAC calculates EUI64-Identifier.*/
+uint64_t mac2eui64 (const uint8_t *mac);
+
+/* Create empty element for prefix list and return a pointer to it */
+struct prefix_info * ip6_create_prefix_info(void);
+
+/* Create a new IPv6 address with a given network prefix
+ * and add it to our IPv6 address list */
+void * ip6_prefix2addr (ip6_addr_t prefix);
+
+/* Compare IPv6 adresses */
+int8_t ip6_cmp( ip6_addr_t *ip_1, ip6_addr_t *ip_2 );
+
+/* Check if prefix is already in our list */
+int8_t unknown_prefix (ip6_addr_t *ip);
+
+/* Send IPv6 packet */
+int send_ipv6 (int fd, void* buffer, int len);
+
+/* Add IPv6 address to list */
+int8_t ip6addr_add (struct ip6addr_list_entry *new_address);
+
+/* Parse an IPv6 address */
+int parseip6(const char *addr, uint8_t *parsedaddr);
+int str_to_ipv6(const char *str, uint8_t *ip);
+void ipv6_to_str(const uint8_t *ip, char *str);
+
+#endif
Code Review / kvmfornfv.git / blobdiff