zebra: remove rt_ioctl kernel interface

None of the BSDs uses ioctls to set routes anymore.

Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
Acked-by: Greg Troxel <gdt@ir.bbn.com>
Acked-by: Feng Lu <lu.feng@6wind.com>
Acked-by: Paul Jakma <paul@jakma.org>

diff --git a/zebra/rt_ioctl.c b/zebra/rt_ioctl.c
deleted file mode 100644 (file)
index 597392c..0000000
--- a/zebra/rt_ioctl.c
+++ /dev/null
@@ -1,420 +0,0 @@
-/*
- * kernel routing table update by ioctl().
- * Copyright (C) 1997, 98 Kunihiro Ishiguro
- *
- * This file is part of GNU Zebra.
- *
- * GNU Zebra is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2, or (at your option) any
- * later version.
- *
- * GNU Zebra is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with GNU Zebra; see the file COPYING.  If not, write to the Free
- * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.  
- */
-
-#include <zebra.h>
-
-#include "prefix.h"
-#include "log.h"
-#include "if.h"
-
-#include "zebra/zserv.h"
-#include "zebra/rib.h"
-#include "zebra/debug.h"
-#include "zebra/rt.h"
-
-/* Initialize of kernel interface.  There is no kernel communication
-   support under ioctl().  So this is dummy stub function. */
-void
-kernel_init (void)
-{
-  return;
-}
-
-/* Dummy function of routing socket. */
-static void
-kernel_read (int sock)
-{
-  return;
-}
-
-/* Solaris has ortentry. */
-#ifdef HAVE_OLD_RTENTRY
-#define rtentry ortentry
-#endif /* HAVE_OLD_RTENTRY */
-
-/* Interface to ioctl route message. */
-static int
-kernel_ioctl_ipv4 (u_long cmd, struct prefix *p, struct rib *rib, int family)
-{
-  int ret;
-  int sock;
-  struct rtentry rtentry;
-  struct sockaddr_in sin_dest, sin_mask, sin_gate;
-  struct nexthop *nexthop, *tnexthop;
-  int recursing;
-  int nexthop_num = 0;
-  struct interface *ifp;
-
-  memset (&rtentry, 0, sizeof (struct rtentry));
-
-  /* Make destination. */
-  memset (&sin_dest, 0, sizeof (struct sockaddr_in));
-  sin_dest.sin_family = AF_INET;
-#ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN
-  sin_dest.sin_len = sizeof (struct sockaddr_in);
-#endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */
-  sin_dest.sin_addr = p->u.prefix4;
-
-  if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_BLACKHOLE))
-    {
-      SET_FLAG (rtentry.rt_flags, RTF_REJECT);
-
-      if (cmd == SIOCADDRT)
-       for (ALL_NEXTHOPS_RO(rib->nexthop, nexthop, tnexthop, recursing))
-         {
-            /* We shouldn't encounter recursive nexthops on discard routes,
-             * but it is probably better to handle that case correctly anyway.
-             */
-           if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE))
-             continue;
-           SET_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB);
-         }
-      goto skip;
-    }
-
-  memset (&sin_gate, 0, sizeof (struct sockaddr_in));
-
-  /* Make gateway. */
-  for (ALL_NEXTHOPS_RO(rib->nexthop, nexthop, tnexthop, recursing))
-    {
-      if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE))
-        continue;
-
-      if ((cmd == SIOCADDRT 
-          && CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE))
-         || (cmd == SIOCDELRT
-             && CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB)))
-       {
-         if (nexthop->type == NEXTHOP_TYPE_IPV4 ||
-             nexthop->type == NEXTHOP_TYPE_IPV4_IFINDEX)
-           {
-             sin_gate.sin_family = AF_INET;
-#ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN
-             sin_gate.sin_len = sizeof (struct sockaddr_in);
-#endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */
-             sin_gate.sin_addr = nexthop->gate.ipv4;
-             rtentry.rt_flags |= RTF_GATEWAY;
-           }
-         if (nexthop->type == NEXTHOP_TYPE_IFINDEX)
-           {
-             ifp = if_lookup_by_index (nexthop->ifindex);
-             if (ifp)
-               rtentry.rt_dev = ifp->name;
-             else
-               return -1;
-           }
-
-         if (cmd == SIOCADDRT)
-           SET_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB);
-
-         nexthop_num++;
-         break;
-       }
-    }
-
-  /* If there is no useful nexthop then return. */
-  if (nexthop_num == 0)
-    {
-      if (IS_ZEBRA_DEBUG_KERNEL)
-       zlog_debug ("netlink_route_multipath(): No useful nexthop.");
-      return 0;
-    }
-
- skip:
-
-  memset (&sin_mask, 0, sizeof (struct sockaddr_in));
-  sin_mask.sin_family = AF_INET;
-#ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN
-  sin_mask.sin_len = sizeof (struct sockaddr_in);
-#endif /* HAVE_STRUCT_SOCKADDR_IN_SIN_LEN */
-  masklen2ip (p->prefixlen, &sin_mask.sin_addr);
-
-  /* Set destination address, mask and gateway.*/
-  memcpy (&rtentry.rt_dst, &sin_dest, sizeof (struct sockaddr_in));
-
-  if (rtentry.rt_flags & RTF_GATEWAY)
-    memcpy (&rtentry.rt_gateway, &sin_gate, sizeof (struct sockaddr_in));
-
-#ifndef SUNOS_5
-  memcpy (&rtentry.rt_genmask, &sin_mask, sizeof (struct sockaddr_in));
-#endif /* SUNOS_5 */
-
-  /* Metric.  It seems metric minus one value is installed... */
-  rtentry.rt_metric = rib->metric;
-
-  /* Routing entry flag set. */
-  if (p->prefixlen == 32)
-    rtentry.rt_flags |= RTF_HOST;
-
-  rtentry.rt_flags |= RTF_UP;
-
-  /* Additional flags */
-  /* rtentry.rt_flags |= flags; */
-
-  /* For tagging route. */
-  /* rtentry.rt_flags |= RTF_DYNAMIC; */
-
-  /* Open socket for ioctl. */
-  sock = socket (AF_INET, SOCK_DGRAM, 0);
-  if (sock < 0)
-    {
-      zlog_warn ("can't make socket\n");
-      return -1;
-    }
-
-  /* Send message by ioctl(). */
-  ret = ioctl (sock, cmd, &rtentry);
-  if (ret < 0)
-    {
-      switch (errno) 
-       {
-       case EEXIST:
-         close (sock);
-         return ZEBRA_ERR_RTEXIST;
-         break;
-       case ENETUNREACH:
-         close (sock);
-         return ZEBRA_ERR_RTUNREACH;
-         break;
-       case EPERM:
-         close (sock);
-         return ZEBRA_ERR_EPERM;
-         break;
-       }
-
-      close (sock);
-      zlog_warn ("write : %s (%d)", safe_strerror (errno), errno);
-      return ret;
-    }
-  close (sock);
-
-  return ret;
-}
-
-int
-kernel_add_ipv4 (struct prefix *p, struct rib *rib)
-{
-  return kernel_ioctl_ipv4 (SIOCADDRT, p, rib, AF_INET);
-}
-
-int
-kernel_update_ipv4 (struct prefix *p, struct rib *rib)
-{
-  kernel_ioctl_ipv4 (SIOCDELRT, p, rib, AF_INET);
-  return kernel_ioctl_ipv4 (SIOCADDRT, p, rib, AF_INET);
-}
-
-int
-kernel_delete_ipv4 (struct prefix *p, struct rib *rib)
-{
-  return kernel_ioctl_ipv4 (SIOCDELRT, p, rib, AF_INET);
-}
-
-#ifdef HAVE_IPV6
-
-/* Below is hack for GNU libc definition and Linux 2.1.X header. */
-#undef RTF_DEFAULT
-#undef RTF_ADDRCONF
-
-#include <asm/types.h>
-
-#if defined(__GLIBC__) && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1
-/* struct in6_rtmsg will be declared in net/route.h. */
-#else
-#include <linux/ipv6_route.h>
-#endif
-
-static int
-kernel_ioctl_ipv6 (u_long type, struct prefix_ipv6 *dest, struct in6_addr *gate,
-                  int index, int flags)
-{
-  int ret;
-  int sock;
-  struct in6_rtmsg rtm;
-    
-  memset (&rtm, 0, sizeof (struct in6_rtmsg));
-
-  rtm.rtmsg_flags |= RTF_UP;
-  rtm.rtmsg_metric = 1;
-  memcpy (&rtm.rtmsg_dst, &dest->prefix, sizeof (struct in6_addr));
-  rtm.rtmsg_dst_len = dest->prefixlen;
-
-  /* We need link local index. But this should be done caller...
-  if (IN6_IS_ADDR_LINKLOCAL(&rtm.rtmsg_gateway))
-    {
-      index = if_index_address (&rtm.rtmsg_gateway);
-      rtm.rtmsg_ifindex = index;
-    }
-  else
-    rtm.rtmsg_ifindex = 0;
-  */
-
-  rtm.rtmsg_flags |= RTF_GATEWAY;
-
-  /* For tagging route. */
-  /* rtm.rtmsg_flags |= RTF_DYNAMIC; */
-
-  memcpy (&rtm.rtmsg_gateway, gate, sizeof (struct in6_addr));
-
-  if (index)
-    rtm.rtmsg_ifindex = index;
-  else
-    rtm.rtmsg_ifindex = 0;
-
-  rtm.rtmsg_metric = 1;
-  
-  sock = socket (AF_INET6, SOCK_DGRAM, 0);
-  if (sock < 0)
-    {
-      zlog_warn ("can't make socket\n");
-      return -1;
-    }
-
-  /* Send message via ioctl. */
-  ret = ioctl (sock, type, &rtm);
-  if (ret < 0)
-    {
-      zlog_warn ("can't %s ipv6 route: %s\n", type == SIOCADDRT ? "add" : "delete", 
-          safe_strerror(errno));
-      ret = errno;
-      close (sock);
-      return ret;
-    }
-  close (sock);
-
-  return ret;
-}
-
-static int
-kernel_ioctl_ipv6_multipath (u_long cmd, struct prefix *p, struct rib *rib,
-                            int family)
-{
-  int ret;
-  int sock;
-  struct in6_rtmsg rtm;
-  struct nexthop *nexthop, *tnexthop;
-  int recursing;
-  int nexthop_num = 0;
-    
-  memset (&rtm, 0, sizeof (struct in6_rtmsg));
-
-  rtm.rtmsg_flags |= RTF_UP;
-  rtm.rtmsg_metric = rib->metric;
-  memcpy (&rtm.rtmsg_dst, &p->u.prefix, sizeof (struct in6_addr));
-  rtm.rtmsg_dst_len = p->prefixlen;
-
-  /* We need link local index. But this should be done caller...
-  if (IN6_IS_ADDR_LINKLOCAL(&rtm.rtmsg_gateway))
-    {
-      index = if_index_address (&rtm.rtmsg_gateway);
-      rtm.rtmsg_ifindex = index;
-    }
-  else
-    rtm.rtmsg_ifindex = 0;
-  */
-
-  rtm.rtmsg_flags |= RTF_GATEWAY;
-
-  /* For tagging route. */
-  /* rtm.rtmsg_flags |= RTF_DYNAMIC; */
-
-  /* Make gateway. */
-  for (ALL_NEXTHOPS_RO(rib->nexthop, nexthop, tnexthop, recursing))
-    {
-      if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE))
-        continue;
-
-      if ((cmd == SIOCADDRT 
-          && CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE))
-         || (cmd == SIOCDELRT
-             && CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB)))
-       {
-         if (nexthop->type == NEXTHOP_TYPE_IPV6
-             || nexthop->type == NEXTHOP_TYPE_IPV6_IFINDEX)
-           {
-             memcpy (&rtm.rtmsg_gateway, &nexthop->gate.ipv6,
-                     sizeof (struct in6_addr));
-           }
-         if (nexthop->type == NEXTHOP_TYPE_IFINDEX
-             || nexthop->type == NEXTHOP_TYPE_IPV6_IFINDEX)
-           rtm.rtmsg_ifindex = nexthop->ifindex;
-         else
-           rtm.rtmsg_ifindex = 0;
-
-         if (cmd == SIOCADDRT)
-           SET_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB);
-
-         nexthop_num++;
-         break;
-       }
-    }
-
-  /* If there is no useful nexthop then return. */
-  if (nexthop_num == 0)
-    {
-      if (IS_ZEBRA_DEBUG_KERNEL)
-       zlog_debug ("netlink_route_multipath(): No useful nexthop.");
-      return 0;
-    }
-
-  sock = socket (AF_INET6, SOCK_DGRAM, 0);
-  if (sock < 0)
-    {
-      zlog_warn ("can't make socket\n");
-      return -1;
-    }
-
-  /* Send message via ioctl. */
-  ret = ioctl (sock, cmd, &rtm);
-  if (ret < 0)
-    {
-      zlog_warn ("can't %s ipv6 route: %s\n",
-                cmd == SIOCADDRT ? "add" : "delete", 
-          safe_strerror(errno));
-      ret = errno;
-      close (sock);
-      return ret;
-    }
-  close (sock);
-
-  return ret;
-}
-
-int
-kernel_add_ipv6 (struct prefix *p, struct rib *rib)
-{
-  return kernel_ioctl_ipv6_multipath (SIOCADDRT, p, rib, AF_INET6);
-}
-
-int
-kernel_update_ipv6 (struct prefix *p, struct rib *rib)
-{
-  kernel_ioctl_ipv6_multipath (SIOCDELRT, p, rib, AF_INET6);
-  return kernel_ioctl_ipv6_multipath(SIOCADDRT, p, rib, AF_INET6);
-}
-
-int
-kernel_delete_ipv6 (struct prefix *p, struct rib *rib)
-{
-  return kernel_ioctl_ipv6_multipath (SIOCDELRT, p, rib, AF_INET6);
-}
-#endif /* HAVE_IPV6 */