src/include/gpxe/ndp.h

   1 #ifndef _GPXE_NDP_H
   2 #define _GPXE_NDP_H
   3
   4 #include <stdint.h>
   5 #include <byteswap.h>
   6 #include <string.h>
   7 #include <gpxe/ip6.h>
   8 #include <gpxe/in.h>
   9 #include <gpxe/netdevice.h>
  10 #include <gpxe/iobuf.h>
  11 #include <gpxe/tcpip.h>
  12
  13 struct icmp6_net_protocol;
  14 struct job_interface;
  15
  16 #define NDP_STATE_INVALID 0
  17 #define NDP_STATE_INCOMPLETE 1
  18 #define NDP_STATE_REACHABLE 2
  19 #define NDP_STATE_DELAY 3
  20 #define NDP_STATE_PROBE 4
  21 #define NDP_STATE_STALE 5
  22
  23 #define RSOLICIT_STATE_INVALID  0
  24 #define RSOLICIT_STATE_PENDING  1
  25 #define RSOLICIT_STATE_COMPLETE 2
  26 #define RSOLICIT_STATE_ALMOST   3
  27
  28 #define RSOLICIT_CODE_NONE      0
  29 #define RSOLICIT_CODE_MANAGED   1
  30 #define RSOLICIT_CODE_OTHERCONF 2
  31
  32 #define NDP_OPTION_SOURCE_LL        1
  33 #define NDP_OPTION_TARGET_LL        2
  34 #define NDP_OPTION_PREFIX_INFO      3
  35 #define NDP_OPTION_REDIRECT         4
  36 #define NDP_OPTION_MTU              5
  37
  38 struct rsolicit_info {
  39         struct in6_addr router;
  40         struct in6_addr prefix;
  41         int prefix_length;
  42         int no_address; /* No address assignment takes place via this adv. */
  43 };
  44
  45 struct neighbour_solicit {
  46         uint8_t type;
  47         uint8_t code;
  48         uint16_t csum;
  49         uint32_t reserved;
  50         struct in6_addr target;
  51 };
  52
  53 struct neighbour_advert {
  54         uint8_t type;
  55         uint8_t code;
  56         uint16_t csum;
  57         uint8_t flags;
  58         uint8_t reserved;
  59         struct in6_addr target;
  60 };
  61
  62 struct router_solicit {
  63         uint8_t type;
  64         uint8_t code;
  65         uint16_t csum;
  66         uint32_t reserved;
  67 };
  68
  69 struct router_advert {
  70         uint8_t type;
  71         uint8_t code;
  72         uint16_t csum;
  73         uint8_t hop_limit;
  74         uint8_t rsvd_flags;
  75         uint16_t lifetime;
  76         uint32_t reachable_time;
  77         uint32_t retrans_time;
  78 };
  79
  80 struct ndp_option
  81 {
  82         uint8_t type;
  83         uint8_t length;
  84 };
  85
  86 struct ll_option
  87 {
  88         uint8_t type;
  89         uint8_t length;
  90         uint8_t address[6];
  91 };
  92
  93 struct prefix_option
  94 {
  95         uint8_t type;
  96         uint8_t length;
  97         uint8_t prefix_len;
  98         uint8_t flags_rsvd;
  99         uint32_t lifetime;
 100         uint32_t pref_lifetime;
 101         uint32_t rsvd2;
 102         uint8_t prefix[16];
 103 };
 104
 105 #define RADVERT_MANAGED         ( 1 << 7 )
 106 #define RADVERT_OTHERCONF       ( 1 << 6 )
 107
 108 int ndp_resolve ( struct net_device *netdev, struct in6_addr *src,
 109                   struct in6_addr *dest, void *dest_ll_addr );
 110
 111 int ndp_send_rsolicit ( struct net_device *netdev,
 112                         struct job_interface *job,
 113                         struct rsolicit_info *meta );
 114
 115 int ndp_process_radvert ( struct io_buffer *iobuf, struct sockaddr_tcpip *st_src,
 116                           struct sockaddr_tcpip *st_dest, struct net_device *netdev,
 117                           struct icmp6_net_protocol *net_protocol );
 118
 119 int ndp_process_nadvert ( struct io_buffer *iobuf, struct sockaddr_tcpip *st_src,
 120                           struct sockaddr_tcpip *st_dest,
 121                           struct icmp6_net_protocol *net_protocol );
 122
 123 int ndp_process_nsolicit ( struct io_buffer *iobuf, struct sockaddr_tcpip *st_src,
 124                            struct sockaddr_tcpip *st_dest, struct net_device *netdev,
 125                            struct icmp6_net_protocol *net_protocol );
 126
 127 #endif
 128