ip6.h

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00001 #ifndef _GPXE_IP6_H
00002 #define _GPXE_IP6_H
00003 
00004 /** @file
00005  *
00006  * IP6 protocol
00007  *
00008  */
00009 
00010 FILE_LICENCE ( GPL2_OR_LATER );
00011 
00012 #include <stdint.h>
00013 #include <gpxe/in.h>
00014 
00015 /* IP6 constants */
00016 
00017 #define IP6_VERSION     0x6
00018 #define IP6_HOP_LIMIT   255
00019 
00020 /**
00021  * I/O buffer contents
00022  * This is duplicated in tcp.h and here. Ideally it should go into iobuf.h
00023  */
00024 #define MAX_HDR_LEN     100
00025 #define MAX_IOB_LEN     1500
00026 #define MIN_IOB_LEN     MAX_HDR_LEN + 100 /* To account for padding by LL */
00027 
00028 #define IP6_EQUAL( in6_addr1, in6_addr2 ) \
00029         ( memcmp ( ( char* ) &( in6_addr1 ), ( char* ) &( in6_addr2 ),\
00030         sizeof ( struct in6_addr ) ) == 0 )
00031 
00032 #define IS_UNSPECIFIED( addr ) \
00033         ( ( (addr).in6_u.u6_addr32[0] == 0x00000000 ) && \
00034         ( (addr).in6_u.u6_addr32[1] == 0x00000000 ) && \
00035         ( (addr).in6_u.u6_addr32[2] == 0x00000000 ) && \
00036         ( (addr).in6_u.u6_addr32[3] == 0x00000000 ) )
00037 /* IP6 header */
00038 struct ip6_header {
00039         uint32_t        ver_traffic_class_flow_label;
00040         uint16_t        payload_len;
00041         uint8_t         nxt_hdr;
00042         uint8_t         hop_limit;
00043         struct in6_addr src;
00044         struct in6_addr dest;
00045 };
00046 
00047 /* IP6 pseudo header */
00048 struct ipv6_pseudo_header {
00049         struct in6_addr src;
00050         struct in6_addr dest;
00051         uint8_t zero_padding;
00052         uint8_t nxt_hdr;
00053         uint16_t len;
00054 };
00055 
00056 /* Next header numbers */
00057 #define IP6_HOPBYHOP            0x00
00058 #define IP6_ROUTING             0x43
00059 #define IP6_FRAGMENT            0x44
00060 #define IP6_AUTHENTICATION      0x51
00061 #define IP6_DEST_OPTS           0x60
00062 #define IP6_ESP                 0x50
00063 #define IP6_ICMP6               0x58
00064 #define IP6_NO_HEADER           0x59
00065 
00066 struct io_buffer;
00067 struct net_device;
00068 struct net_protocol;
00069 
00070 extern struct net_protocol ipv6_protocol;
00071 extern struct tcpip_net_protocol ipv6_tcpip_protocol;
00072 extern char * inet6_ntoa ( struct in6_addr in6 );
00073 
00074 extern int add_ipv6_address ( struct net_device *netdev,
00075                               struct in6_addr prefix, int prefix_len,
00076                               struct in6_addr address,
00077                               struct in6_addr gateway );
00078 extern void del_ipv6_address ( struct net_device *netdev );
00079 
00080 #endif /* _GPXE_IP6_H */