servers/inet/generic/ip_int.h

   1 /*
   2 ip_int.h
   3
   4 Copyright 1995 Philip Homburg
   5 */
   6
   7 #ifndef INET_IP_INT_H
   8 #define INET_IP_INT_H
   9
  10 #define IP_FD_NR        (8*IP_PORT_MAX)
  11 #define IP_ASS_NR       3
  12
  13 #define IP_42BSD_BCAST          1       /* hostnumber 0 is also network
  14                                            broadcast */
  15
  16 #define IP_LT_NORMAL            0       /* Normal */
  17 #define IP_LT_BROADCAST         1       /* Broadcast */
  18 #define IP_LT_MULTICAST         2       /* Multicast */
  19
  20 struct ip_port;
  21 struct ip_fd;
  22 typedef void (*ip_dev_t) ARGS(( struct ip_port *ip_port ));
  23 typedef int (*ip_dev_send_t) ARGS(( struct ip_port *ip_port, ipaddr_t dest,
  24                                                 acc_t *pack, int type ));
  25
  26 #define IP_PROTO_HASH_NR        32
  27
  28 typedef struct ip_port
  29 {
  30         int ip_flags, ip_dl_type;
  31         int ip_port;
  32         union
  33         {
  34                 struct
  35                 {
  36                         int de_state;
  37                         int de_flags;
  38                         int de_port;
  39                         int de_fd;
  40                         acc_t *de_frame;
  41                         acc_t *de_q_head;
  42                         acc_t *de_q_tail;
  43                         acc_t *de_arp_head;
  44                         acc_t *de_arp_tail;
  45                 } dl_eth;
  46                 struct
  47                 {
  48                         int ps_port;
  49                         acc_t *ps_send_head;
  50                         acc_t *ps_send_tail;
  51                 } dl_ps;
  52         } ip_dl;
  53         ipaddr_t ip_ipaddr;
  54         ipaddr_t ip_subnetmask;
  55         ipaddr_t ip_classfulmask;
  56         u16_t ip_frame_id;
  57         u16_t ip_mtu;
  58         u16_t ip_mtu_max;               /* Max MTU for this kind of network */
  59         ip_dev_t ip_dev_main;
  60         ip_dev_t ip_dev_set_ipaddr;
  61         ip_dev_send_t ip_dev_send;
  62         acc_t *ip_loopb_head;
  63         acc_t *ip_loopb_tail;
  64         event_t ip_loopb_event;
  65         acc_t *ip_routeq_head;
  66         acc_t *ip_routeq_tail;
  67         event_t ip_routeq_event;
  68         struct ip_fd *ip_proto_any;
  69         struct ip_fd *ip_proto[IP_PROTO_HASH_NR];
  70 } ip_port_t;
  71
  72 #define IES_EMPTY       0x0
  73 #define IES_SETPROTO    0x1
  74 #define IES_GETIPADDR   0x2
  75 #define IES_MAIN        0x3
  76 #define IES_ERROR       0x4
  77
  78 #define IEF_EMPTY       0x1
  79 #define IEF_SUSPEND     0x8
  80 #define IEF_READ_IP     0x10
  81 #define IEF_READ_SP     0x20
  82 #define IEF_WRITE_SP    0x80
  83
  84 #define IPF_EMPTY               0x0
  85 #define IPF_CONFIGURED          0x1
  86 #define IPF_IPADDRSET           0x2
  87 #define IPF_NETMASKSET          0x4
  88 #define IPF_SUBNET_BCAST        0x8     /* Subset support subnet broadcasts  */
  89
  90 #define IPDL_ETH        NETTYPE_ETH
  91 #define IPDL_PSIP       NETTYPE_PSIP
  92
  93 typedef struct ip_ass
  94 {
  95         acc_t *ia_frags;
  96         int ia_min_ttl;
  97         ip_port_t *ia_port;
  98         time_t ia_first_time;
  99         ipaddr_t ia_srcaddr, ia_dstaddr;
 100         int ia_proto, ia_id;
 101 } ip_ass_t;
 102
 103 typedef struct ip_fd
 104 {
 105         int if_flags;
 106         struct nwio_ipopt if_ipopt;
 107         ip_port_t *if_port;
 108         struct ip_fd *if_proto_next;
 109         int if_srfd;
 110         acc_t *if_rdbuf_head;
 111         acc_t *if_rdbuf_tail;
 112         get_userdata_t if_get_userdata;
 113         put_userdata_t if_put_userdata;
 114         put_pkt_t if_put_pkt;
 115         time_t if_exp_time;
 116         size_t if_rd_count;
 117         ioreq_t if_ioctl;
 118 } ip_fd_t;
 119
 120 #define IFF_EMPTY       0x00
 121 #define IFF_INUSE       0x01
 122 #define IFF_OPTSET      0x02
 123 #define IFF_BUSY        0x1C
 124 #       define IFF_READ_IP      0x04
 125 #       define IFF_IOCTL_IP     0x08
 126
 127 typedef enum nettype
 128 {
 129         IPNT_ZERO,              /*   0.xx.xx.xx */
 130         IPNT_CLASS_A,           /*   1.xx.xx.xx .. 126.xx.xx.xx */
 131         IPNT_LOCAL,             /* 127.xx.xx.xx */
 132         IPNT_CLASS_B,           /* 128.xx.xx.xx .. 191.xx.xx.xx */
 133         IPNT_CLASS_C,           /* 192.xx.xx.xx .. 223.xx.xx.xx */
 134         IPNT_CLASS_D,           /* 224.xx.xx.xx .. 239.xx.xx.xx */
 135         IPNT_CLASS_E,           /* 240.xx.xx.xx .. 247.xx.xx.xx */
 136         IPNT_MARTIAN,           /* 248.xx.xx.xx .. 254.xx.xx.xx + others */
 137         IPNT_BROADCAST          /* 255.255.255.255 */
 138 } nettype_t;
 139
 140 struct nwio_ipconf;
 141
 142 /* ip_eth.c */
 143 int ipeth_init ARGS(( ip_port_t *ip_port ));
 144
 145 /* ip_ioctl.c */
 146 void ip_hash_proto ARGS(( ip_fd_t *ip_fd ));
 147 void ip_unhash_proto ARGS(( ip_fd_t *ip_fd ));
 148 int ip_setconf ARGS(( int ip_port, struct nwio_ipconf *ipconfp ));
 149
 150 /* ip_lib.c */
 151 ipaddr_t ip_get_netmask ARGS(( ipaddr_t hostaddr ));
 152 ipaddr_t ip_get_ifaddr ARGS(( int ip_port_nr ));
 153 int ip_chk_hdropt ARGS(( u8_t *opt, int optlen ));
 154 void ip_print_frags ARGS(( acc_t *acc ));
 155 nettype_t ip_nettype ARGS(( ipaddr_t ipaddr ));
 156 ipaddr_t ip_netmask ARGS(( nettype_t nettype ));
 157 char *ip_nettoa ARGS(( nettype_t nettype ));
 158
 159 /* ip_ps.c */
 160 int ipps_init ARGS(( ip_port_t *ip_port ));
 161 void ipps_get ARGS(( int ip_port_nr ));
 162 void ipps_put ARGS(( int ip_port_nr, ipaddr_t nexthop, acc_t *pack ));
 163
 164 /* ip_read.c */
 165 void ip_port_arrive ARGS(( ip_port_t *port, acc_t *pack, ip_hdr_t *ip_hdr ));
 166 void ip_arrived ARGS(( ip_port_t *port, acc_t *pack ));
 167 void ip_arrived_broadcast ARGS(( ip_port_t *port, acc_t *pack ));
 168 void ip_process_loopb ARGS(( event_t *ev, ev_arg_t arg ));
 169 void ip_packet2user ARGS(( ip_fd_t *ip_fd, acc_t *pack, time_t exp_time,
 170         size_t data_len ));
 171
 172 /* ip_write.c */
 173 void dll_eth_write_frame ARGS(( ip_port_t *port ));
 174 acc_t *ip_split_pack ARGS(( ip_port_t *ip_port, acc_t **ref_last, int mtu ));
 175 void ip_hdr_chksum ARGS(( ip_hdr_t *ip_hdr, int ip_hdr_len ));
 176
 177
 178 extern ip_fd_t ip_fd_table[IP_FD_NR];
 179 extern ip_port_t *ip_port_table;
 180 extern ip_ass_t ip_ass_table[IP_ASS_NR];
 181
 182 #define NWIO_DEFAULT    (NWIO_EN_LOC | NWIO_EN_BROAD | NWIO_REMANY | \
 183         NWIO_RWDATALL | NWIO_HDR_O_SPEC)
 184
 185 #endif /* INET_IP_INT_H */
 186
 187 /*
 188  * $PchId: ip_int.h,v 1.19 2004/08/03 16:24:23 philip Exp $
 189  */