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Annotation of embedaddon/quagga/zebra/if_sysctl.c, revision 1.1.1.2

1.1       misho       1: /*
                      2:  * Get interface's address and mask information by sysctl() function.
                      3:  * Copyright (C) 1997, 98 Kunihiro Ishiguro
                      4:  *
                      5:  * This file is part of GNU Zebra.
                      6:  *
                      7:  * GNU Zebra is free software; you can redistribute it and/or modify it
                      8:  * under the terms of the GNU General Public License as published by the
                      9:  * Free Software Foundation; either version 2, or (at your option) any
                     10:  * later version.
                     11:  *
                     12:  * GNU Zebra is distributed in the hope that it will be useful, but
                     13:  * WITHOUT ANY WARRANTY; without even the implied warranty of
                     14:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
                     15:  * General Public License for more details.
                     16:  *
                     17:  * You should have received a copy of the GNU General Public License
                     18:  * along with GNU Zebra; see the file COPYING.  If not, write to the Free
                     19:  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
                     20:  * 02111-1307, USA.  
                     21:  */
                     22: 
                     23: #include <zebra.h>
                     24: 
                     25: #include "if.h"
                     26: #include "sockunion.h"
                     27: #include "prefix.h"
                     28: #include "connected.h"
                     29: #include "memory.h"
                     30: #include "ioctl.h"
                     31: #include "log.h"
1.1.1.2 ! misho      32: #include "interface.h"
        !            33: #include "vrf.h"
1.1       misho      34: 
                     35: #include "zebra/rt.h"
                     36: #include "zebra/kernel_socket.h"
1.1.1.2 ! misho      37: #include "zebra/rib.h"
1.1       misho      38: 
                     39: void
                     40: ifstat_update_sysctl (void)
                     41: {
                     42:   caddr_t ref, buf, end;
                     43:   size_t bufsiz;
                     44:   struct if_msghdr *ifm;
                     45:   struct interface *ifp;
                     46: 
                     47: #define MIBSIZ 6
                     48:   int mib[MIBSIZ] =
                     49:   { 
                     50:     CTL_NET,
                     51:     PF_ROUTE,
                     52:     0,
                     53:     0, /*  AF_INET & AF_INET6 */
                     54:     NET_RT_IFLIST,
                     55:     0 
                     56:   };
                     57: 
                     58:   /* Query buffer size. */
                     59:   if (sysctl (mib, MIBSIZ, NULL, &bufsiz, NULL, 0) < 0) 
                     60:     {
                     61:       zlog_warn ("sysctl() error by %s", safe_strerror (errno));
                     62:       return;
                     63:     }
                     64: 
                     65:   /* We free this memory at the end of this function. */
                     66:   ref = buf = XMALLOC (MTYPE_TMP, bufsiz);
                     67: 
                     68:   /* Fetch interface informations into allocated buffer. */
                     69:   if (sysctl (mib, MIBSIZ, buf, &bufsiz, NULL, 0) < 0) 
                     70:     {
                     71:       zlog (NULL, LOG_WARNING, "sysctl error by %s", safe_strerror (errno));
                     72:       return;
                     73:     }
                     74: 
                     75:   /* Parse both interfaces and addresses. */
                     76:   for (end = buf + bufsiz; buf < end; buf += ifm->ifm_msglen) 
                     77:     {
                     78:       ifm = (struct if_msghdr *) buf;
                     79:       if (ifm->ifm_type == RTM_IFINFO)
                     80:        {
                     81:          ifp = if_lookup_by_index (ifm->ifm_index);
                     82:          if (ifp)
                     83:            ifp->stats = ifm->ifm_data;
                     84:        }
                     85:     }
                     86: 
                     87:   /* Free sysctl buffer. */
                     88:   XFREE (MTYPE_TMP, ref);
                     89: 
                     90:   return;
                     91: }
                     92: 
                     93: /* Interface listing up function using sysctl(). */
                     94: void
1.1.1.2 ! misho      95: interface_list (struct zebra_vrf *zvrf)
1.1       misho      96: {
                     97:   caddr_t ref, buf, end;
                     98:   size_t bufsiz;
                     99:   struct if_msghdr *ifm;
                    100: 
                    101: #define MIBSIZ 6
                    102:   int mib[MIBSIZ] =
                    103:   { 
                    104:     CTL_NET,
                    105:     PF_ROUTE,
                    106:     0,
                    107:     0, /*  AF_INET & AF_INET6 */
                    108:     NET_RT_IFLIST,
                    109:     0 
                    110:   };
1.1.1.2 ! misho     111: 
        !           112:   if (zvrf->vrf_id != VRF_DEFAULT)
        !           113:     {
        !           114:       zlog_warn ("interface_list: ignore VRF %u", zvrf->vrf_id);
        !           115:       return;
        !           116:     }
1.1       misho     117: 
                    118:   /* Query buffer size. */
                    119:   if (sysctl (mib, MIBSIZ, NULL, &bufsiz, NULL, 0) < 0) 
                    120:     {
                    121:       zlog (NULL, LOG_WARNING, "sysctl() error by %s", safe_strerror (errno));
                    122:       return;
                    123:     }
                    124: 
                    125:   /* We free this memory at the end of this function. */
                    126:   ref = buf = XMALLOC (MTYPE_TMP, bufsiz);
                    127: 
                    128:   /* Fetch interface informations into allocated buffer. */
                    129:   if (sysctl (mib, MIBSIZ, buf, &bufsiz, NULL, 0) < 0) 
                    130:     {
                    131:       zlog (NULL, LOG_WARNING, "sysctl error by %s", safe_strerror (errno));
                    132:       return;
                    133:     }
                    134: 
                    135:   /* Parse both interfaces and addresses. */
                    136:   for (end = buf + bufsiz; buf < end; buf += ifm->ifm_msglen) 
                    137:     {
                    138:       ifm = (struct if_msghdr *) buf;
                    139: 
                    140:       switch (ifm->ifm_type) 
                    141:        {
                    142:        case RTM_IFINFO:
                    143:          ifm_read (ifm);
                    144:          break;
                    145:        case RTM_NEWADDR:
                    146:          ifam_read ((struct ifa_msghdr *) ifm);
                    147:          break;
                    148:        default:
                    149:          zlog_info ("interfaces_list(): unexpected message type");
                    150:          XFREE (MTYPE_TMP, ref);
                    151:          return;
                    152:          break;
                    153:        }
                    154:     }
                    155: 
                    156:   /* Free sysctl buffer. */
                    157:   XFREE (MTYPE_TMP, ref);
                    158: }