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FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //usr/src/share/examples/netgraph/ether.bridge |
#!/bin/sh # $FreeBSD: release/9.1.0/share/examples/netgraph/ether.bridge 222179 2011-05-22 14:23:48Z uqs $ # This script sets up an Ethernet bridging network across multiple # Ethernet interfaces using the ng_bridge(4) and ng_ether(4) netgraph # node types. # # To use this script: # # 0. Make your own copy of this example script. # # 1. Give your bridging network a name by editing the definition of # ${BRIDGE_NAME} below. It must be a valid netgraph node name. # # 2. Edit the definitions of ${BRIDGE_IFACES} and ${LOCAL_IFACES} # as described below to define your bridging interfaces. # # 3. Run this script with "start" as the command line argument. # # 4. Examine bridging statistics by running this script with "stats" # as the command line argument. # # 5. Stop bridging by running this script with "stop" as the # command line argument. # # To run multiple independent bridging networks, create multiple # copies of this script with different variable definitions. # # To make a "brouted" network, with IP being routed and other protocols being # bridged, add all the interface in the BRIDGE_IFACES to the LOCAL_IFACES. # If you just want a normal bridge, just one will be enough. # In some cases you may want some combination. # # Give each bridging network a unique name here. BRIDGE_NAME="bnet0" # List the names of the interfaces that you want to bridge across # here in ${BRIDGE_IFACES}. If you want to include the local host # machine as well then set ${LOCAL_IFACES} as well (they may also be # listed in ${BRIDGE_IFACES}). Of course, any ${LOCAL_IFACE} must # be ifconfig(8)ured separately. If you don't want a ${LOCAL_IFACE} # then assign it the empty string. BRIDGE_IFACES="de0 fxp0 fxp1" LOCAL_IFACES="fxp0 fxp1" ##################################################################### #### Everything below this point should not need to be modified. #### ##################################################################### # Routine to verify node's existence. bridge_verify() { ngctl info ${BRIDGE_NAME}: >/dev/null 2>&1 if [ $? -ne 0 ]; then echo "${BRIDGE_NAME}: bridge network not found" exit 1 fi } # Routine to get and display link stats. bridge_linkstats() { STATS=`ngctl msg ${BRIDGE_NAME}: getstats $1` if [ $? -ne 0 ]; then exit 1 fi echo "${STATS}" | fmt 2 | awk '/=/ { fl=index($0, "="); \ printf "%20s = %s\n", substr($0, 0, fl - 1), substr($0, fl + 1); }' } # Start/restart routine. bridge_start() { # Load netgraph KLD's as necessary. for KLD in ng_ether ng_bridge; do if ! kldstat -v | grep -qw ${KLD}; then echo -n "Loading ${KLD}.ko... " kldload ${KLD} || exit 1 echo "done" fi done # Reset all interfaces. bridge_stop # Verify all interfaces exist. for ETHER in ${BRIDGE_IFACES} ${LOCAL_IFACES}; do if ! ngctl info ${ETHER}: >/dev/null 2>&1; then echo "Error: interface ${ETHER} does not exist" exit 1 fi ifconfig ${ETHER} up || exit 1 done # Create new ng_bridge(4) node, attached to the first interface. FIRSTIF=`echo ${BRIDGE_IFACES} | awk '{ print $1 }'` ngctl mkpeer ${FIRSTIF}: bridge lower link0 || exit 1 ngctl name ${FIRSTIF}:lower ${BRIDGE_NAME} || exit 1 # Attach other interfaces as well. LINKNUM=0 for ETHER in ${BRIDGE_IFACES}; do if [ ${LINKNUM} != 0 ]; then ngctl connect ${ETHER}: ${BRIDGE_NAME}: \ lower link${LINKNUM} || exit 1 fi LINKNUM=`expr ${LINKNUM} + 1` done # Hook up local interface, if any. for LOCAL_IFACE in ${LOCAL_IFACES}; do ngctl connect ${LOCAL_IFACE}: ${BRIDGE_NAME}: \ upper link${LINKNUM} || exit 1 LINKNUM=`expr ${LINKNUM} + 1` done # Set all interfaces in promiscuous mode and don't overwrite src addr. for ETHER in ${BRIDGE_IFACES}; do ngctl msg ${ETHER}: setpromisc 1 || exit 1 ngctl msg ${ETHER}: setautosrc 0 || exit 1 done } # Stop routine. bridge_stop() { ngctl kill ${BRIDGE_NAME}: >/dev/null 2>&1 for ETHER in ${BRIDGE_IFACES} ${LOCAL_IFACES}; do ngctl kill ${ETHER}: >/dev/null 2>&1 done } # Stats routine. bridge_stats() { # Make sure node exists. bridge_verify echo "" echo "Statistics for bridging network ${BRIDGE_NAME}:" echo "" LINKNUM=0 for ETHER in ${BRIDGE_IFACES}; do echo "Network interface ${ETHER}:" bridge_linkstats ${LINKNUM} LINKNUM=`expr ${LINKNUM} + 1` done for LOCAL_IFACE in ${LOCAL_IFACES}; do echo "Local host interface ${LOCAL_IFACE}:" bridge_linkstats ${LINKNUM} LINKNUM=`expr ${LINKNUM} + 1` done } # Main entry point. case $1 in start) bridge_start ;; stats) bridge_verify bridge_stats ;; stop) bridge_verify bridge_stop ;; *) echo "usage: $0 [ start | stop | stats ]" exit 1 esac