3
4# This script sets up an Ethernet bridging network across multiple
5# Ethernet interfaces using the ng_bridge(4) and ng_ether(4) netgraph
6# node types.
7#
8# To use this script:
9#
10# 0. Make your own copy of this example script
11#
12# 1. Give your bridging network a name by editing the definition of
13# ${BRIDGE_NAME} below. It must be a valid netgraph node name.
14#
15# 2. Edit the definitions of ${BRIDGE_IFACES} and ${LOCAL_IFACE}
16# as described below to define your bridging interfaces.
17#
18# 3. Run this script with "start" as the command line argument.
19#
20# 4. Examine bridging statistics by running this script with "stats"
21# as the command line argument.
22#
23# 5. Stop bridging by running this script with "stop" as the
24# command line argument.
25#
26# To run multiple independent bridging networks, create multiple
27# copies of this script with different variable definitions.
28#
29
30# Give each bridging network a unique name here
31
32BRIDGE_NAME="bnet0"
33
34# List the names of the interfaces that you want to bridge across
35# here in ${BRIDGE_IFACES}. If you want to include the local host
36# machine as well then set ${LOCAL_IFACE} as well (it may also be
37# listed in ${BRIDGE_IFACES}). Of course, any ${LOCAL_IFACE} must
38# be ifconfig(8)ured separately. If you don't want a ${LOCAL_IFACE}
39# then leave it defined as the emtpy string.
40
41BRIDGE_IFACES="ed0 fxp0 fxp1"
42LOCAL_IFACE="fxp0"
43
44####################################################################
45#### Everything below this point should not need to be modified ####
46####################################################################
47
48# Routine to verify node's existence
49bridge_verify() {
50 ngctl info ${BRIDGE_NAME}: >/dev/null 2>&1
51 if [ $? -ne 0 ]; then
52 echo "${BRIDGE_NAME}: bridge network not found"
53 exit 1
54 fi
55}
56
57# Routine to get and display link stats
58bridge_linkstats() {
59 STATS=`ngctl msg ${BRIDGE_NAME}: getstats $1`
60 if [ $? -ne 0 ]; then
61 exit 1
62 fi
63 echo "${STATS}" | fmt 2 | awk '/=/ { fl=index($0, "="); \
64 printf "%20s = %s\n", substr($0, 0, fl - 1), substr($0, fl + 1); }'
65}
66
67# Start/restart routine
68bridge_start() {
69
70 # Load netgraph KLD's as necessary
71 for KLD in ng_ether ng_bridge; do
72 if kldstat -v | grep -qw ${KLD}; then
73 else
74 echo -n "Loading ${KLD}.ko... "
75 kldload ${KLD} || exit 1
76 echo "done"
77 fi
78 done
79
80 # Reset all interfaces
81 bridge_stop
82
83 # Verify all interfaces exist
84 for ETHER in ${BRIDGE_IFACES} ${LOCAL_IFACE}; do
85 if ngctl info ${ETHER}: >/dev/null 2>&1; then
86 else
87 echo "Error: interface ${ETHER} does not exist"
88 exit 1
89 fi
90 ifconfig ${ETHER} up || exit 1
91 done
92
93 # Create new ng_bridge(4) node, attached to the first interface
94 FIRSTIF=`echo ${BRIDGE_IFACES} | awk '{ print $1 }'`
95 ngctl mkpeer ${FIRSTIF}: bridge lower link0 || exit 1
96 ngctl name ${FIRSTIF}:lower ${BRIDGE_NAME} || exit 1
97
98 # Attach other interfaces as well
99 LINKNUM=0
100 for ETHER in ${BRIDGE_IFACES}; do
101 if [ ${LINKNUM} != 0 ]; then
102 ngctl connect ${ETHER}: ${BRIDGE_NAME}: \
103 lower link${LINKNUM} || exit 1
104 fi
105 LINKNUM=`expr ${LINKNUM} + 1`
106 done
107
108 # Hook up local interface, if any
109 if [ "${LOCAL_IFACE}" != "" ]; then
110 ngctl connect ${LOCAL_IFACE}: ${BRIDGE_NAME}: \
111 upper link${LINKNUM} || exit 1
112 fi
113
114 # Set all interfaces in promiscuous mode and don't overwrite src addr
115 for ETHER in ${BRIDGE_IFACES}; do
116 ngctl msg ${ETHER}: setpromisc 1 || exit 1
117 ngctl msg ${ETHER}: setautosrc 0 || exit 1
118 done
119}
120
121# Stop routine
122bridge_stop() {
123 ngctl kill ${BRIDGE_NAME}: >/dev/null 2>&1
124 for ETHER in ${BRIDGE_IFACES} ${LOCAL_IFACE}; do
125 ngctl kill ${ETHER}: >/dev/null 2>&1
126 done
127}
128
129# Stats routine
130bridge_stats() {
131
132 # Make sure node exists
133 bridge_verify
134
135 echo ""
136 echo "Statistics for bridging network ${BRIDGE_NAME}:"
137 echo ""
138 LINKNUM=0
139 for ETHER in ${BRIDGE_IFACES}; do
140 echo "Network interface ${ETHER}:"
141 bridge_linkstats ${LINKNUM}
142 LINKNUM=`expr ${LINKNUM} + 1`
143 done
144 if [ "${LOCAL_IFACE}" != "" ]; then
| 3
4# This script sets up an Ethernet bridging network across multiple
5# Ethernet interfaces using the ng_bridge(4) and ng_ether(4) netgraph
6# node types.
7#
8# To use this script:
9#
10# 0. Make your own copy of this example script
11#
12# 1. Give your bridging network a name by editing the definition of
13# ${BRIDGE_NAME} below. It must be a valid netgraph node name.
14#
15# 2. Edit the definitions of ${BRIDGE_IFACES} and ${LOCAL_IFACE}
16# as described below to define your bridging interfaces.
17#
18# 3. Run this script with "start" as the command line argument.
19#
20# 4. Examine bridging statistics by running this script with "stats"
21# as the command line argument.
22#
23# 5. Stop bridging by running this script with "stop" as the
24# command line argument.
25#
26# To run multiple independent bridging networks, create multiple
27# copies of this script with different variable definitions.
28#
29
30# Give each bridging network a unique name here
31
32BRIDGE_NAME="bnet0"
33
34# List the names of the interfaces that you want to bridge across
35# here in ${BRIDGE_IFACES}. If you want to include the local host
36# machine as well then set ${LOCAL_IFACE} as well (it may also be
37# listed in ${BRIDGE_IFACES}). Of course, any ${LOCAL_IFACE} must
38# be ifconfig(8)ured separately. If you don't want a ${LOCAL_IFACE}
39# then leave it defined as the emtpy string.
40
41BRIDGE_IFACES="ed0 fxp0 fxp1"
42LOCAL_IFACE="fxp0"
43
44####################################################################
45#### Everything below this point should not need to be modified ####
46####################################################################
47
48# Routine to verify node's existence
49bridge_verify() {
50 ngctl info ${BRIDGE_NAME}: >/dev/null 2>&1
51 if [ $? -ne 0 ]; then
52 echo "${BRIDGE_NAME}: bridge network not found"
53 exit 1
54 fi
55}
56
57# Routine to get and display link stats
58bridge_linkstats() {
59 STATS=`ngctl msg ${BRIDGE_NAME}: getstats $1`
60 if [ $? -ne 0 ]; then
61 exit 1
62 fi
63 echo "${STATS}" | fmt 2 | awk '/=/ { fl=index($0, "="); \
64 printf "%20s = %s\n", substr($0, 0, fl - 1), substr($0, fl + 1); }'
65}
66
67# Start/restart routine
68bridge_start() {
69
70 # Load netgraph KLD's as necessary
71 for KLD in ng_ether ng_bridge; do
72 if kldstat -v | grep -qw ${KLD}; then
73 else
74 echo -n "Loading ${KLD}.ko... "
75 kldload ${KLD} || exit 1
76 echo "done"
77 fi
78 done
79
80 # Reset all interfaces
81 bridge_stop
82
83 # Verify all interfaces exist
84 for ETHER in ${BRIDGE_IFACES} ${LOCAL_IFACE}; do
85 if ngctl info ${ETHER}: >/dev/null 2>&1; then
86 else
87 echo "Error: interface ${ETHER} does not exist"
88 exit 1
89 fi
90 ifconfig ${ETHER} up || exit 1
91 done
92
93 # Create new ng_bridge(4) node, attached to the first interface
94 FIRSTIF=`echo ${BRIDGE_IFACES} | awk '{ print $1 }'`
95 ngctl mkpeer ${FIRSTIF}: bridge lower link0 || exit 1
96 ngctl name ${FIRSTIF}:lower ${BRIDGE_NAME} || exit 1
97
98 # Attach other interfaces as well
99 LINKNUM=0
100 for ETHER in ${BRIDGE_IFACES}; do
101 if [ ${LINKNUM} != 0 ]; then
102 ngctl connect ${ETHER}: ${BRIDGE_NAME}: \
103 lower link${LINKNUM} || exit 1
104 fi
105 LINKNUM=`expr ${LINKNUM} + 1`
106 done
107
108 # Hook up local interface, if any
109 if [ "${LOCAL_IFACE}" != "" ]; then
110 ngctl connect ${LOCAL_IFACE}: ${BRIDGE_NAME}: \
111 upper link${LINKNUM} || exit 1
112 fi
113
114 # Set all interfaces in promiscuous mode and don't overwrite src addr
115 for ETHER in ${BRIDGE_IFACES}; do
116 ngctl msg ${ETHER}: setpromisc 1 || exit 1
117 ngctl msg ${ETHER}: setautosrc 0 || exit 1
118 done
119}
120
121# Stop routine
122bridge_stop() {
123 ngctl kill ${BRIDGE_NAME}: >/dev/null 2>&1
124 for ETHER in ${BRIDGE_IFACES} ${LOCAL_IFACE}; do
125 ngctl kill ${ETHER}: >/dev/null 2>&1
126 done
127}
128
129# Stats routine
130bridge_stats() {
131
132 # Make sure node exists
133 bridge_verify
134
135 echo ""
136 echo "Statistics for bridging network ${BRIDGE_NAME}:"
137 echo ""
138 LINKNUM=0
139 for ETHER in ${BRIDGE_IFACES}; do
140 echo "Network interface ${ETHER}:"
141 bridge_linkstats ${LINKNUM}
142 LINKNUM=`expr ${LINKNUM} + 1`
143 done
144 if [ "${LOCAL_IFACE}" != "" ]; then
|