lib/net-support.h

   1 /*
   2  * lib/support.h      This file contains the definitions of what is in the
   3  *                      support library.  Most of all, it defines structures
   4  *                      for accessing support modules, and the function proto-
   5  *                      types.
   6  *
   7  * NET-LIB      A collection of functions used from the base set of the
   8  *              NET-3 Networking Distribution for the LINUX operating
   9  *              system. (net-tools, net-drivers)
  10  *
  11  * Version:     lib/net-support.h 1.35 (1996-01-01)
  12  *
  13  * Maintainer:  Bernd 'eckes' Eckenfels, <net-tools@lina.inka.de>
  14  *
  15  * Author:      Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
  16  *              Copyright 1993 MicroWalt Corporation
  17  *
  18  * Modifications:
  19  *960125 {1.20} Bernd Eckenfels:        reformated, layout
  20  *960202 {1.30} Bernd Eckenfels:        rprint in aftype
  21  *960206 {1.31} Bernd Eckenfels:        route_init
  22  *960219 {1.32} Bernd Eckenfels:        type for ap->input()
  23  *960322 {1.33} Bernd Eckenfels:        activate_ld and const in get_hwtype
  24  *960413 {1.34} Bernd Eckenfels:        new RTACTION suport
  25  *990101 {1.35} Bernd Eckenfels:        print_(hw|af)list support, added kerneldefines
  26  *
  27  *              This program is free software; you can redistribute it
  28  *              and/or  modify it under  the terms of  the GNU General
  29  *              Public  License as  published  by  the  Free  Software
  30  *              Foundation;  either  version 2 of the License, or  (at
  31  *              your option) any later version.
  32  */
  33 #include <sys/socket.h>
  34
  35 /* This structure defines protocol families and their handlers. */
  36 struct aftype {
  37     char *name;
  38     char *title;
  39     int af;
  40     int alen;
  41     char *(*print) (unsigned char *);
  42     char *(*sprint) (struct sockaddr *, int numeric);
  43     int (*input) (int type, char *bufp, struct sockaddr *);
  44     void (*herror) (char *text);
  45     int (*rprint) (int options);
  46     int (*rinput) (int typ, int ext, char **argv);
  47
  48     /* may modify src */
  49     int (*getmask) (char *src, struct sockaddr * mask, char *name);
  50
  51     int fd;
  52     char *flag_file;
  53 };
  54
  55 extern struct aftype *aftypes[];
  56
  57 /* This structure defines hardware protocols and their handlers. */
  58 struct hwtype {
  59     char *name;
  60     char *title;
  61     int type;
  62     int alen;
  63     char *(*print) (unsigned char *);
  64     int (*input) (char *, struct sockaddr *);
  65     int (*activate) (int fd);
  66     int suppress_null_addr;
  67 };
  68
  69
  70 extern struct hwtype *get_hwtype(const char *name);
  71 extern struct hwtype *get_hwntype(int type);
  72 extern void          print_hwlist(int type);
  73 extern struct aftype *get_aftype(const char *name);
  74 extern struct aftype *get_afntype(int type);
  75 extern void          print_aflist(int type);
  76 extern int           hw_null_address(struct hwtype *hw, void *addr);
  77
  78 extern int getargs(char *string, char *arguments[]);
  79
  80 extern int get_socket_for_af(int af);
  81
  82 extern void getroute_init(void);
  83 extern void setroute_init(void);
  84 extern void activate_init(void);
  85 extern int route_info(const char *afname, int flags);
  86 extern int route_edit(int action, const char *afname, int flags, char **argv);
  87 extern int activate_ld(const char *hwname, int fd);
  88
  89 #define RTACTION_ADD   1
  90 #define RTACTION_DEL   2
  91 #define RTACTION_HELP  3
  92 #define RTACTION_FLUSH 4
  93 #define RTACTION_SHOW  5
  94
  95 #define FLAG_EXT       3                /* AND-Mask */
  96 #define FLAG_NUM_HOST  4
  97 #define FLAG_NUM_PORT  8
  98 #define FLAG_NUM_USER 16
  99 #define FLAG_NUM     (FLAG_NUM_HOST|FLAG_NUM_PORT|FLAG_NUM_USER)
 100 #define FLAG_SYM      32
 101 #define FLAG_CACHE    64
 102 #define FLAG_FIB     128
 103 #define FLAG_VERBOSE 256
 104
 105 extern int ip_masq_info(int numeric_host, int numeric_port, int ext);
 106
 107 extern int INET_rprint(int options);
 108 extern int INET6_rprint(int options);
 109 extern int DDP_rprint(int options);
 110 extern int IPX_rprint(int options);
 111 extern int NETROM_rprint(int options);
 112 extern int AX25_rprint(int options);
 113 extern int X25_rprint(int options);
 114
 115 extern int INET_rinput(int action, int flags, char **argv);
 116 extern int INET6_rinput(int action, int flags, char **argv);
 117 extern int DDP_rinput(int action, int flags, char **argv);
 118 extern int IPX_rinput(int action, int flags, char **argv);
 119 extern int NETROM_rinput(int action, int flags, char **argv);
 120 extern int AX25_rinput(int action, int flags, char **argv);
 121 extern int X25_rinput(int action, int flags, char **argv);
 122
 123 extern int aftrans_opt(const char *arg);
 124 extern void aftrans_def(char *tool, char *argv0, char *dflt);
 125
 126 extern char *get_sname(int socknumber, char *proto, int numeric);
 127
 128 extern int flag_unx;
 129 extern int flag_ipx;
 130 extern int flag_ax25;
 131 extern int flag_ddp;
 132 extern int flag_netrom;
 133 extern int flag_x25;
 134 extern int flag_inet;
 135 extern int flag_inet6;
 136
 137 extern char afname[];
 138
 139 #define AFTRANS_OPTS \
 140         {"ax25",        0,      0,      1}, \
 141        {"x25",         0,      0,      1}, \
 142         {"ip",          0,      0,      1}, \
 143         {"ipx",         0,      0,      1}, \
 144         {"appletalk",   0,      0,      1}, \
 145         {"netrom",      0,      0,      1}, \
 146         {"inet",        0,      0,      1}, \
 147         {"inet6",       0,      0,      1}, \
 148         {"ddp",         0,      0,      1}, \
 149         {"unix",        0,      0,      1}, \
 150         {"tcpip",       0,      0,      1}
 151 #define AFTRANS_CNT 11
 152
 153 #define EINTERN(file, text) fprintf(stderr, \
 154         _("%s: Internal Error `%s'.\n"),file,text);
 155
 156 #define ENOSUPP(A,B)    fprintf(stderr,\
 157                                 _("%s: feature `%s' not supported.\n" \
 158                                   "Please recompile `net-tools' with "\
 159                                   "newer kernel source or full configuration.\n"),A,B)
 160
 161 #define ESYSNOT(A,B)    fprintf(stderr, _("%s: no support for `%s' on this system.\n"),A,B)
 162
 163 #define E_NOTFOUND      8
 164 #define E_SOCK          7
 165 #define E_LOOKUP        6
 166 #define E_VERSION       5
 167 #define E_USAGE         4
 168 #define E_OPTERR        3
 169 #define E_INTERN        2
 170 #define E_NOSUPP        1
 171
 172
 173 /* ========== Kernel Defines =============
 174  * Since it is not a good idea to depend on special kernel sources for the headers
 175  * and since the libc6 Headers are not always up to date, we keep a copy of the
 176  * most often used Flags in this file. We realy need a way to keep them up-to-date.
 177  * Perhaps anybody knows how the glibc2 folk is doing it? -ecki
 178  */
 179
 180 /* Keep this ins sync with /usr/src/linux/include/linux/rtnetlink.h */
 181 #define RTNH_F_DEAD            1       /* Nexthop is dead (used by multipath)  */
 182 #define RTNH_F_PERVASIVE       2       /* Do recursive gateway lookup  */
 183 #define RTNH_F_ONLINK          4       /* Gateway is forced on link    */
 184
 185 /* Keep this in sync with /usr/src/linux/include/linux/in_route.h */
 186 #define RTCF_DEAD       RTNH_F_DEAD
 187 #define RTCF_ONLINK     RTNH_F_ONLINK
 188 /* #define RTCF_NOPMTUDISC RTM_F_NOPMTUDISC */
 189 #define RTCF_NOTIFY     0x00010000
 190 #define RTCF_DIRECTDST  0x00020000
 191 #define RTCF_REDIRECTED 0x00040000
 192 #define RTCF_TPROXY     0x00080000
 193 #define RTCF_FAST       0x00200000
 194 #define RTCF_MASQ       0x00400000
 195 #define RTCF_SNAT       0x00800000
 196 #define RTCF_DOREDIRECT 0x01000000
 197 #define RTCF_DIRECTSRC  0x04000000
 198 #define RTCF_DNAT       0x08000000
 199 #define RTCF_BROADCAST  0x10000000
 200 #define RTCF_MULTICAST  0x20000000
 201 #define RTCF_REJECT     0x40000000
 202 #define RTCF_LOCAL      0x80000000
 203
 204 /* Keep this in sync with /usr/src/linux/include/linux/ipv6_route.h */
 205 #ifndef RTF_DEFAULT
 206 #define RTF_DEFAULT     0x00010000      /* default - learned via ND     */
 207 #endif
 208 #define RTF_ALLONLINK   0x00020000      /* fallback, no routers on link */
 209 #ifndef RTF_ADDRCONF
 210 #define RTF_ADDRCONF    0x00040000      /* addrconf route - RA          */
 211 #endif
 212 #define RTF_NONEXTHOP   0x00200000      /* route with no nexthop        */
 213 #define RTF_EXPIRES     0x00400000
 214 #define RTF_CACHE       0x01000000      /* cache entry                  */
 215 #define RTF_FLOW        0x02000000      /* flow significant route       */
 216 #define RTF_POLICY      0x04000000      /* policy route                 */
 217 #define RTF_LOCAL       0x80000000
 218
 219 /* Keep this in sync with /usr/src/linux/include/linux/route.h */
 220 #define RTF_UP          0x0001          /* route usable                 */
 221 #define RTF_GATEWAY     0x0002          /* destination is a gateway     */
 222 #define RTF_HOST        0x0004          /* host entry (net otherwise)   */
 223 #define RTF_REINSTATE   0x0008          /* reinstate route after tmout  */
 224 #define RTF_DYNAMIC     0x0010          /* created dyn. (by redirect)   */
 225 #define RTF_MODIFIED    0x0020          /* modified dyn. (by redirect)  */
 226 #define RTF_MTU         0x0040          /* specific MTU for this route  */
 227 #ifndef RTF_MSS
 228 #define RTF_MSS         RTF_MTU         /* Compatibility :-(            */
 229 #endif
 230 #define RTF_WINDOW      0x0080          /* per route window clamping    */
 231 #define RTF_IRTT        0x0100          /* Initial round trip time      */
 232 #define RTF_REJECT      0x0200          /* Reject route                 */
 233
 234 /* this is a 2.0.36 flag from /usr/src/linux/include/linux/route.h */
 235 #define RTF_NOTCACHED   0x0400          /* this route isn't cached        */
 236
 237 #ifdef HAVE_AFECONET
 238 #ifndef AF_ECONET
 239 #define AF_ECONET       19      /* Acorn Econet */
 240 #endif
 241 #endif
 242
 243 /* End of lib/support.h */
 244