--- /dev/null
+#ifndef _IPXE_IPV6_H
+#define _IPXE_IPV6_H
+
+/** @file
+ *
+ * IPv6 protocol
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdint.h>
+#include <string.h>
+#include <byteswap.h>
+#include <ipxe/in.h>
+#include <ipxe/list.h>
+#include <ipxe/netdevice.h>
+
+/** IPv6 version */
+#define IPV6_VER 0x60000000UL
+
+/** IPv6 version mask */
+#define IPV6_MASK_VER 0xf0000000UL
+
+/** IPv6 maximum hop limit */
+#define IPV6_HOP_LIMIT 0xff
+
+/** IPv6 header */
+struct ipv6_header {
+ /** Version (4 bits), Traffic class (8 bits), Flow label (20 bits) */
+ uint32_t ver_tc_label;
+ /** Payload length, including any extension headers */
+ uint16_t len;
+ /** Next header type */
+ uint8_t next_header;
+ /** Hop limit */
+ uint8_t hop_limit;
+ /** Source address */
+ struct in6_addr src;
+ /** Destination address */
+ struct in6_addr dest;
+} __attribute__ (( packed ));
+
+/** IPv6 extension header common fields */
+struct ipv6_extension_header_common {
+ /** Next header type */
+ uint8_t next_header;
+ /** Header extension length (excluding first 8 bytes) */
+ uint8_t len;
+} __attribute__ (( packed ));
+
+/** IPv6 type-length-value options */
+struct ipv6_option {
+ /** Type */
+ uint8_t type;
+ /** Length */
+ uint8_t len;
+ /** Value */
+ uint8_t value[0];
+} __attribute__ (( packed ));
+
+/** IPv6 option types */
+enum ipv6_option_type {
+ /** Pad1 */
+ IPV6_OPT_PAD1 = 0x00,
+ /** PadN */
+ IPV6_OPT_PADN = 0x01,
+};
+
+/** Test if IPv6 option can be safely ignored */
+#define IPV6_CAN_IGNORE_OPT( type ) ( ( (type) & 0xc0 ) == 0x00 )
+
+/** IPv6 option-based extension header */
+struct ipv6_options_header {
+ /** Extension header common fields */
+ struct ipv6_extension_header_common common;
+ /** Options */
+ struct ipv6_option options[0];
+} __attribute__ (( packed ));
+
+/** IPv6 routing header */
+struct ipv6_routing_header {
+ /** Extension header common fields */
+ struct ipv6_extension_header_common common;
+ /** Routing type */
+ uint8_t type;
+ /** Segments left */
+ uint8_t remaining;
+ /** Type-specific data */
+ uint8_t data[0];
+} __attribute__ (( packed ));
+
+/** IPv6 fragment header */
+struct ipv6_fragment_header {
+ /** Extension header common fields */
+ struct ipv6_extension_header_common common;
+ /** Fragment offset (13 bits), reserved, more fragments (1 bit) */
+ uint16_t offset_more;
+ /** Identification */
+ uint32_t ident;
+} __attribute__ (( packed ));
+
+/** Fragment offset mask */
+#define IPV6_MASK_OFFSET 0xfff8
+
+/** More fragments */
+#define IPV6_MASK_MOREFRAGS 0x0001
+
+/** IPv6 extension header */
+union ipv6_extension_header {
+ /** Extension header common fields */
+ struct ipv6_extension_header_common common;
+ /** Minimum size padding */
+ uint8_t pad[8];
+ /** Generic options header */
+ struct ipv6_options_header options;
+ /** Hop-by-hop options header */
+ struct ipv6_options_header hopbyhop;
+ /** Routing header */
+ struct ipv6_routing_header routing;
+ /** Fragment header */
+ struct ipv6_fragment_header fragment;
+ /** Destination options header */
+ struct ipv6_options_header destination;
+};
+
+/** IPv6 header types */
+enum ipv6_header_type {
+ /** IPv6 hop-by-hop options header type */
+ IPV6_HOPBYHOP = 0,
+ /** IPv6 routing header type */
+ IPV6_ROUTING = 43,
+ /** IPv6 fragment header type */
+ IPV6_FRAGMENT = 44,
+ /** IPv6 no next header type */
+ IPV6_NO_HEADER = 59,
+ /** IPv6 destination options header type */
+ IPV6_DESTINATION = 60,
+};
+
+/** IPv6 pseudo-header */
+struct ipv6_pseudo_header {
+ /** Source address */
+ struct in6_addr src;
+ /** Destination address */
+ struct in6_addr dest;
+ /** Upper-layer packet length */
+ uint32_t len;
+ /** Zero padding */
+ uint8_t zero[3];
+ /** Next header */
+ uint8_t next_header;
+} __attribute__ (( packed ));
+
+/** An IPv6 address/routing table entry */
+struct ipv6_miniroute {
+ /** List of miniroutes */
+ struct list_head list;
+
+ /** Network device */
+ struct net_device *netdev;
+
+ /** IPv6 address (or prefix if no address is defined) */
+ struct in6_addr address;
+ /** Prefix length */
+ unsigned int prefix_len;
+ /** IPv6 prefix mask (derived from prefix length) */
+ struct in6_addr prefix_mask;
+ /** Router address */
+ struct in6_addr router;
+ /** Flags */
+ unsigned int flags;
+};
+
+/** IPv6 address/routing table entry flags */
+enum ipv6_miniroute_flags {
+ /** Routing table entry address is valid */
+ IPV6_HAS_ADDRESS = 0x0001,
+ /** Routing table entry router address is valid */
+ IPV6_HAS_ROUTER = 0x0002,
+};
+
+/**
+ * Construct local IPv6 address via EUI-64
+ *
+ * @v addr Prefix to be completed
+ * @v netdev Network device
+ * @ret prefix_len Prefix length, or negative error
+ */
+static inline int ipv6_eui64 ( struct in6_addr *addr,
+ struct net_device *netdev ) {
+ struct ll_protocol *ll_protocol = netdev->ll_protocol;
+ const void *ll_addr = netdev->ll_addr;
+ int rc;
+
+ if ( ( rc = ll_protocol->eui64 ( ll_addr, &addr->s6_addr[8] ) ) != 0 )
+ return rc;
+ addr->s6_addr[8] ^= 0x02;
+ return 64;
+}
+
+/**
+ * Construct link-local address via EUI-64
+ *
+ * @v addr Zeroed address to construct
+ * @v netdev Network device
+ * @ret prefix_len Prefix length, or negative error
+ */
+static inline int ipv6_link_local ( struct in6_addr *addr,
+ struct net_device *netdev ) {
+
+ addr->s6_addr16[0] = htons ( 0xfe80 );
+ return ipv6_eui64 ( addr, netdev );
+}
+
+/**
+ * Construct solicited-node multicast address
+ *
+ * @v addr Zeroed address to construct
+ * @v unicast Unicast address
+ */
+static inline void ipv6_solicited_node ( struct in6_addr *addr,
+ const struct in6_addr *unicast ) {
+
+ addr->s6_addr16[0] = htons ( 0xff02 );
+ addr->s6_addr[11] = 1;
+ addr->s6_addr[12] = 0xff;
+ memcpy ( &addr->s6_addr[13], &unicast->s6_addr[13], 3 );
+}
+
+/**
+ * Construct all-routers multicast address
+ *
+ * @v addr Zeroed address to construct
+ */
+static inline void ipv6_all_routers ( struct in6_addr *addr ) {
+ addr->s6_addr16[0] = htons ( 0xff02 );
+ addr->s6_addr[15] = 2;
+}
+
+extern struct list_head ipv6_miniroutes;
+
+extern struct net_protocol ipv6_protocol __net_protocol;
+
+extern int ipv6_has_addr ( struct net_device *netdev, struct in6_addr *addr );
+extern int ipv6_set_prefix ( struct net_device *netdev, struct in6_addr *prefix,
+ unsigned int prefix_len, struct in6_addr *router );
+extern int ipv6_set_address ( struct net_device *netdev,
+ struct in6_addr *address );
+extern int parse_ipv6_setting ( const struct setting_type *type,
+ const char *value, void *buf, size_t len );
+extern int format_ipv6_setting ( const struct setting_type *type,
+ const void *raw, size_t raw_len, char *buf,
+ size_t len );
+
+#endif /* _IPXE_IPV6_H */
Code Review / kvmfornfv.git / blobdiff