1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
#! /bin/sh
# Copyright (c) 2011, 2013 Nicira, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
case $0 in
*/*) dir0=`echo "$0" | sed 's,/[^/]*$,,'` ;;
*) dir0=./ ;;
esac
. "$dir0/ovs-lib" || exit 1
usage() {
UTIL=$(basename $0)
cat <<EOF
${UTIL}: Provides helper functions to save Open vSwitch's configuration.
usage: $0 COMMAND
Commands:
save-interfaces Outputs a shell script on stdout that will restore
the current kernel configuration of the specified
network interfaces, as well as the system iptables
configuration.
save-flows Outputs a shell script on stdout that will restore
OpenFlow flows of each Open vSwitch bridge.
save-ofports Outputs a shell script on stdout that will restore
the ofport value across a force-reload-kmod.
This script is meant as a helper for the Open vSwitch init script commands.
EOF
}
save_interfaces () {
if (ip -V) > /dev/null 2>&1; then :; else
echo "$0: ip not found in $PATH" >&2
exit 1
fi
if test "$#" = 0; then
exit 0
fi
devs="$@"
for dev in $devs; do
state=`ip link show dev $dev` || continue
echo "# $dev"
# Link state (Ethernet addresses, up/down, ...)
linkcmd=
case $state in
*"state UP"* | *[,\<]"UP"[,\>]* )
linkcmd="$linkcmd up"
;;
*"state DOWN"*)
linkcmd="$linkcmd down"
;;
esac
if expr "$state" : '.*\bdynamic\b' > /dev/null; then
linkcmd="$linkcmd dynamic"
fi
if qlen=`expr "$state" : '.*qlen \([0-9]+\)'`; then
linkcmd="$linkcmd txqueuelen $qlen"
fi
if hwaddr=`expr "$state" : '.*link/ether \([^ ]*\)'`; then
linkcmd="$linkcmd address $hwaddr"
fi
if brd=`expr "$state" : '.*brd \([^ ]*\)'`; then
linkcmd="$linkcmd broadcast $brd"
fi
if mtu=`expr "$state" : '.*mtu \([0-9]+\)'`; then
linkcmd="$linkcmd mtu $mtu"
fi
if test -n "$linkcmd"; then
echo ip link set dev $dev down # Required to change hwaddr.
echo ip link set dev $dev $linkcmd
fi
move_ip_address $dev $dev
move_ip_routes $dev $dev
echo
done
if (iptables-save) > /dev/null 2>&1; then
echo "# global"
echo "iptables-restore <<'EOF'"
iptables-save
echo "EOF"
else
echo "# iptables-save not found in $PATH, not saving iptables state"
fi
}
save_flows () {
if (ovs-ofctl --version) > /dev/null 2>&1; then :; else
echo "$0: ovs-ofctl not found in $PATH" >&2
exit 1
fi
for bridge in "$@"; do
echo "ovs-ofctl add-flows ${bridge} - << EOF"
ovs-ofctl dump-flows "${bridge}" | sed -e '/NXST_FLOW/d' \
-e 's/\(idle\|hard\)_age=[^,]*,//g'
echo "EOF"
done
}
ovs_vsctl () {
ovs-vsctl --no-wait "$@"
}
save_ofports ()
{
if (ovs-vsctl --version) > /dev/null 2>&1; then :; else
echo "$0: ovs-vsctl not found in $PATH" >&2
exit 1
fi
for bridge in "$@"; do
count=0
for iface in `ovs_vsctl list-ifaces ${bridge}`; do
ofport=`ovs_vsctl get interface ${iface} ofport`
[ "${count}" -eq 0 ] && cmd="ovs-vsctl --no-wait"
cmd="${cmd} -- --if-exists set interface "${iface}" \
ofport_request="${ofport}""
# Run set interface command on 50 ports at a time.
count=`expr ${count} + 1`
[ "${count}" -eq 50 ] && count=0 && echo "${cmd}" && cmd=""
done
echo "${cmd}"
done
}
while [ $# -ne 0 ]
do
case $1 in
"save-flows")
shift
save_flows "$@"
exit 0
;;
"save-interfaces")
shift
save_interfaces "$@"
exit 0
;;
"save-ofports")
shift
save_ofports "$@"
exit 0
;;
-h | --help)
usage
exit 0
;;
*)
echo >&2 "$0: unknown command \"$1\" (use --help for help)"
exit 1
;;
esac
done
exit 0
|
