libexec/rc/rc.d/routing

   1 #!/bin/sh
   2 #
   3 # Configure routing and miscellaneous network tunables
   4 #
   5 # $FreeBSD$
   6 #
   7
   8 # PROVIDE: routing
   9 # REQUIRE: netif ppp stf
  10 # KEYWORD: nojailvnet
  11
  12 . /etc/rc.subr
  13 . /etc/network.subr
  14
  15 name="routing"
  16 desc="Routing setup"
  17 start_cmd="routing_start doall"
  18 stop_cmd="routing_stop"
  19 extra_commands="options static"
  20 static_cmd="routing_start static"
  21 options_cmd="routing_start options"
  22
  23 ROUTE_CMD="/sbin/route"
  24
  25 routing_start()
  26 {
  27         local _cmd _af _if _a _ret
  28         _cmd=$1
  29         _af=$2
  30         _if=$3
  31         _ret=0
  32
  33         case $_if in
  34         ""|[Aa][Ll][Ll]|[Aa][Nn][Yy])   _if="" ;;
  35         esac
  36
  37         case $_af in
  38         ""|[Aa][Ll][Ll]|[Aa][Nn][Yy])
  39                 for _a in inet inet6; do
  40                         afexists $_a || continue
  41                         setroutes $_cmd $_a $_if || _ret=1
  42                 done
  43         ;;
  44         *)
  45                 if afexists $_af; then
  46                         setroutes $_cmd $_af $_if || _ret=1
  47                 else
  48                         err 1 "Unsupported address family: $_af."
  49                 fi
  50         ;;
  51         esac
  52
  53         return $_ret
  54 }
  55
  56 routing_stop()
  57 {
  58         local _af _if _a
  59         _af=$1
  60         _if=$2
  61
  62         case $_if in
  63         ""|[Aa][Ll][Ll]|[Aa][Nn][Yy])   _if="" ;;
  64         esac
  65
  66         case $_af in
  67         ""|[Aa][Ll][Ll]|[Aa][Nn][Yy])
  68                 for _a in inet inet6; do
  69                         afexists $_a || continue
  70                         eval static_${_a} delete $_if
  71                         # When $_if is specified, do not flush routes.
  72                         if ! [ -n "$_if" ]; then
  73                                 eval routing_stop_${_a}
  74                         fi
  75                 done
  76         ;;
  77         *)
  78                 if afexists $_af; then
  79                         eval static_${_af} delete $_if
  80                         # When $_if is specified, do not flush routes.
  81                         if ! [ -n "$_if" ]; then
  82                                 eval routing_stop_${_af}
  83                         fi
  84                 else
  85                         err 1 "Unsupported address family: $_af."
  86                 fi
  87         ;;
  88         esac
  89 }
  90
  91 setroutes()
  92 {
  93         local _ret
  94         _ret=0
  95         case $1 in
  96         static)
  97                 static_$2 add $3
  98                 _ret=$?
  99                 ;;
 100         options)
 101                 options_$2
 102                 ;;
 103         doall)
 104                 static_$2 add $3
 105                 _ret=$?
 106                 options_$2
 107                 ;;
 108         esac
 109         return $_ret
 110 }
 111
 112 routing_stop_inet()
 113 {
 114         ${ROUTE_CMD} -n flush -inet
 115 }
 116
 117 routing_stop_inet6()
 118 {
 119         local i
 120
 121         ${ROUTE_CMD} -n flush -inet6
 122         for i in `list_net_interfaces`; do
 123                 if ipv6if $i; then
 124                         ifconfig $i inet6 -defaultif
 125                 fi
 126         done
 127 }
 128
 129 get_fibmod()
 130 {
 131         local _fibs
 132
 133         _fibs=$((`${SYSCTL_N} net.fibs` - 1))
 134         if [ ${_fibs} -gt 0 ]; then
 135                 echo "-fib 0-${_fibs}"
 136         else
 137                 echo
 138         fi
 139 }
 140
 141 static_inet()
 142 {
 143         local _action _if _skip _fibmod
 144         _action=$1
 145         _if=$2
 146
 147         _fibmod=`get_fibmod`
 148
 149         # Provide loopback route in all routing tables.  This has to come
 150         # first so that any following routes can be added.
 151         static_routes="_loopback ${static_routes}"
 152         route__loopback="-inet 127.0.0.1 -iface lo0 ${_fibmod}"
 153
 154         # Add default route.
 155         case ${defaultrouter} in
 156         [Nn][Oo] | '')
 157                 ;;
 158         *)
 159                 static_routes="${static_routes} _default"
 160                 route__default="default ${defaultrouter}"
 161                 ;;
 162         esac
 163
 164         # Install configured routes.
 165         if [ -n "${static_routes}" ]; then
 166                 for i in ${static_routes}; do
 167                         _skip=0
 168                         if [ -n "$_if" ]; then
 169                                 case $i in
 170                                 *:$_if) ;;
 171                                 *)      _skip=1 ;;
 172                                 esac
 173                         fi
 174                         if [ $_skip = 0 ]; then
 175                                 route_args=`get_if_var ${i%:*} route_IF`
 176                                 if [ -n "$route_args" ]; then
 177                                         ${ROUTE_CMD} ${_action} ${route_args}
 178                                 else
 179                                         warn "route_${i%:*} not found."
 180                                 fi
 181                         fi
 182                 done
 183         fi
 184 }
 185
 186 static_inet6()
 187 {
 188         local _action _if _skip fibmod allfibs
 189         _action=$1
 190         _if=$2
 191
 192         fibmod=`get_fibmod`
 193
 194         # Add pre-defined static routes first.
 195         ipv6_static_routes="_v4mapped _v4compat ${ipv6_static_routes}"
 196         ipv6_static_routes="_lla _llma ${ipv6_static_routes}"
 197         ipv6_static_routes="_loopback ${ipv6_static_routes}"
 198
 199         # disallow "internal" addresses to appear on the wire
 200         ipv6_route__v4mapped="::ffff:0.0.0.0 -prefixlen 96 ::1 -reject ${fibmod}"
 201         ipv6_route__v4compat="::0.0.0.0 -prefixlen 96 ::1 -reject ${fibmod}"
 202
 203         # Create a loopback route in every fib
 204         ipv6_route__loopback="::1 -prefixlen 128 -iface lo0 ${fibmod}"
 205
 206         # Disallow link-local unicast packets without outgoing scope
 207         # identifiers.  However, if you set "ipv6_default_interface",
 208         # for the host case, you will allow to omit the identifiers.
 209         # Under this configuration, the packets will go to the default
 210         # interface.
 211         ipv6_route__lla="fe80:: -prefixlen 10 ::1 -reject ${fibmod}"
 212         ipv6_route__llma="ff02:: -prefixlen 16 ::1 -reject ${fibmod}"
 213
 214         # Add default route.
 215         case ${ipv6_defaultrouter} in
 216         [Nn][Oo] | '')
 217                 ;;
 218         *)
 219                 ipv6_static_routes="${ipv6_static_routes} _default"
 220                 ipv6_route__default="default ${ipv6_defaultrouter}"
 221                 ;;
 222         esac
 223
 224         # Install configured routes.
 225         if [ -n "${ipv6_static_routes}" ]; then
 226                 for i in ${ipv6_static_routes}; do
 227                         _skip=0
 228                         if [ -n "$_if" ]; then
 229                                 case $i in
 230                                 *:$_if) ;;
 231                                 *)      _skip=1 ;;
 232                                 esac
 233                         fi
 234                         if [ $_skip = 0 ]; then
 235                                 ipv6_route_args=`get_if_var ${i%:*} ipv6_route_IF`
 236                                 if [ -n "$ipv6_route_args" ]; then
 237                                         ${ROUTE_CMD} ${_action} \
 238                                                 -inet6 ${ipv6_route_args}
 239                                 else
 240                                         warn "route_${i%:*} not found"
 241                                 fi
 242                         fi
 243                 done
 244         fi
 245
 246         # Install the "default interface" to kernel, which will be used
 247         # as the default route when there's no router.
 248
 249         # Disable installing the default interface when we act
 250         # as router to avoid conflict between the default
 251         # router list and the manual configured default route.
 252         if checkyesno ipv6_gateway_enable; then
 253                 return
 254         fi
 255
 256         case "${ipv6_default_interface}" in
 257         [Nn][Oo] | [Nn][Oo][Nn][Ee])
 258                 return
 259                 ;;
 260         [Aa][Uu][Tt][Oo] | "")
 261                 for i in ${ipv6_network_interfaces}; do
 262                         case $i in
 263                         [Nn][Oo][Nn][Ee])
 264                                 return
 265                                 ;;
 266                         lo0)
 267                                 continue
 268                                 ;;
 269                         esac
 270                         laddr=`network6_getladdr $i exclude_tentative`
 271                         case ${laddr} in
 272                         '')
 273                                 ;;
 274                         *)
 275                                 ipv6_default_interface=$i
 276                                 break
 277                                 ;;
 278                         esac
 279                 done
 280                 ;;
 281         esac
 282
 283         ifconfig ${ipv6_default_interface} inet6 defaultif
 284         ${SYSCTL} net.inet6.ip6.use_defaultzone=1 > /dev/null
 285 }
 286
 287 ropts_init()
 288 {
 289         if [ -z "${_ropts_initdone}" ]; then
 290                 echo -n "Additional $1 routing options:"
 291                 _ropts_initdone=yes
 292         fi
 293 }
 294
 295 options_inet()
 296 {
 297         _ropts_initdone=
 298         if checkyesno icmp_bmcastecho; then
 299                 ropts_init inet
 300                 echo -n ' broadcast ping responses=YES'
 301                 ${SYSCTL} net.inet.icmp.bmcastecho=1 > /dev/null
 302         else
 303                 ${SYSCTL} net.inet.icmp.bmcastecho=0 > /dev/null
 304         fi
 305
 306         if checkyesno icmp_drop_redirect; then
 307                 ropts_init inet
 308                 echo -n ' ignore ICMP redirect=YES'
 309                 ${SYSCTL} net.inet.icmp.drop_redirect=1 > /dev/null
 310         else
 311                 ${SYSCTL} net.inet.icmp.drop_redirect=0 > /dev/null
 312         fi
 313
 314         if checkyesno icmp_log_redirect; then
 315                 ropts_init inet
 316                 echo -n ' log ICMP redirect=YES'
 317                 ${SYSCTL} net.inet.icmp.log_redirect=1 > /dev/null
 318         else
 319                 ${SYSCTL} net.inet.icmp.log_redirect=0 > /dev/null
 320         fi
 321
 322         if checkyesno gateway_enable; then
 323                 ropts_init inet
 324                 echo -n ' gateway=YES'
 325                 ${SYSCTL} net.inet.ip.forwarding=1 > /dev/null
 326         else
 327                 ${SYSCTL} net.inet.ip.forwarding=0 > /dev/null
 328         fi
 329
 330         if checkyesno forward_sourceroute; then
 331                 ropts_init inet
 332                 echo -n ' do source routing=YES'
 333                 ${SYSCTL} net.inet.ip.sourceroute=1 > /dev/null
 334         else
 335                 ${SYSCTL} net.inet.ip.sourceroute=0 > /dev/null
 336         fi
 337
 338         if checkyesno accept_sourceroute; then
 339                 ropts_init inet
 340                 echo -n ' accept source routing=YES'
 341                 ${SYSCTL} net.inet.ip.accept_sourceroute=1 > /dev/null
 342         else
 343                 ${SYSCTL} net.inet.ip.accept_sourceroute=0 > /dev/null
 344         fi
 345
 346         if checkyesno arpproxy_all; then
 347                 ropts_init inet
 348                 echo -n ' ARP proxyall=YES'
 349                 ${SYSCTL} net.link.ether.inet.proxyall=1 > /dev/null
 350         else
 351                 ${SYSCTL} net.link.ether.inet.proxyall=0 > /dev/null
 352         fi
 353
 354         [ -n "${_ropts_initdone}" ] && echo '.'
 355 }
 356
 357 options_inet6()
 358 {
 359         _ropts_initdone=
 360
 361         if checkyesno ipv6_gateway_enable; then
 362                 ropts_init inet6
 363                 echo -n ' gateway=YES'
 364                 ${SYSCTL} net.inet6.ip6.forwarding=1 > /dev/null
 365         else
 366                 ${SYSCTL} net.inet6.ip6.forwarding=0 > /dev/null
 367         fi
 368
 369         [ -n "${_ropts_initdone}" ] && echo '.'
 370 }
 371
 372 load_rc_config $name
 373 run_rc_command "$@"