summaryrefslogtreecommitdiff
path: root/tools/hv/bondvf.sh
blob: d85968cb1bf235feb1352809ac9d7229c152d74a (plain)
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
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
#!/bin/bash

# This example script creates bonding network devices based on synthetic NIC
# (the virtual network adapter usually provided by Hyper-V) and the matching
# VF NIC (SRIOV virtual function). So the synthetic NIC and VF NIC can
# function as one network device, and fail over to the synthetic NIC if VF is
# down.
#
# Usage:
# - After configured vSwitch and vNIC with SRIOV, start Linux virtual
#   machine (VM)
# - Run this scripts on the VM. It will create configuration files in
#   distro specific directory.
# - Reboot the VM, so that the bonding config are enabled.
#
# The config files are DHCP by default. You may edit them if you need to change
# to Static IP or change other settings.
#

sysdir=/sys/class/net
netvsc_cls={f8615163-df3e-46c5-913f-f2d2f965ed0e}
bondcnt=0

# Detect Distro
if [ -f /etc/redhat-release ];
then
	cfgdir=/etc/sysconfig/network-scripts
	distro=redhat
elif grep -q 'Ubuntu' /etc/issue
then
	cfgdir=/etc/network
	distro=ubuntu
elif grep -q 'SUSE' /etc/issue
then
	cfgdir=/etc/sysconfig/network
	distro=suse
else
	echo "Unsupported Distro"
	exit 1
fi

echo Detected Distro: $distro, or compatible

# Get a list of ethernet names
list_eth=(`cd $sysdir && ls -d */ | cut -d/ -f1 | grep -v bond`)
eth_cnt=${#list_eth[@]}

echo List of net devices:

# Get the MAC addresses
for (( i=0; i < $eth_cnt; i++ ))
do
	list_mac[$i]=`cat $sysdir/${list_eth[$i]}/address`
	echo ${list_eth[$i]}, ${list_mac[$i]}
done

# Find NIC with matching MAC
for (( i=0; i < $eth_cnt-1; i++ ))
do
	for (( j=i+1; j < $eth_cnt; j++ ))
	do
		if [ "${list_mac[$i]}" = "${list_mac[$j]}" ]
		then
			list_match[$i]=${list_eth[$j]}
			break
		fi
	done
done

function create_eth_cfg_redhat {
	local fn=$cfgdir/ifcfg-$1

	rm -f $fn
	echo DEVICE=$1 >>$fn
	echo TYPE=Ethernet >>$fn
	echo BOOTPROTO=none >>$fn
	echo UUID=`uuidgen` >>$fn
	echo ONBOOT=yes >>$fn
	echo PEERDNS=yes >>$fn
	echo IPV6INIT=yes >>$fn
	echo MASTER=$2 >>$fn
	echo SLAVE=yes >>$fn
}

function create_eth_cfg_pri_redhat {
	create_eth_cfg_redhat $1 $2
}

function create_bond_cfg_redhat {
	local fn=$cfgdir/ifcfg-$1

	rm -f $fn
	echo DEVICE=$1 >>$fn
	echo TYPE=Bond >>$fn
	echo BOOTPROTO=dhcp >>$fn
	echo UUID=`uuidgen` >>$fn
	echo ONBOOT=yes >>$fn
	echo PEERDNS=yes >>$fn
	echo IPV6INIT=yes >>$fn
	echo BONDING_MASTER=yes >>$fn
	echo BONDING_OPTS=\"mode=active-backup miimon=100 primary=$2\" >>$fn
}

function del_eth_cfg_ubuntu {
	local fn=$cfgdir/interfaces
	local tmpfl=$(mktemp)

	local nic_start='^[ \t]*(auto|iface|mapping|allow-.*)[ \t]+'$1
	local nic_end='^[ \t]*(auto|iface|mapping|allow-.*|source)'

	awk "/$nic_end/{x=0} x{next} /$nic_start/{x=1;next} 1"  $fn >$tmpfl

	cp $tmpfl $fn

	rm $tmpfl
}

function create_eth_cfg_ubuntu {
	local fn=$cfgdir/interfaces

	del_eth_cfg_ubuntu $1

	echo $'\n'auto $1 >>$fn
	echo iface $1 inet manual >>$fn
	echo bond-master $2 >>$fn
}

function create_eth_cfg_pri_ubuntu {
	local fn=$cfgdir/interfaces

	create_eth_cfg_ubuntu $1 $2
	echo bond-primary $1 >>$fn
}

function create_bond_cfg_ubuntu {
	local fn=$cfgdir/interfaces

	del_eth_cfg_ubuntu $1

	echo $'\n'auto $1 >>$fn
	echo iface $1 inet dhcp >>$fn
	echo bond-mode active-backup >>$fn
	echo bond-miimon 100 >>$fn
	echo bond-slaves none >>$fn
}

function create_eth_cfg_suse {
        local fn=$cfgdir/ifcfg-$1

        rm -f $fn
	echo BOOTPROTO=none >>$fn
	echo STARTMODE=auto >>$fn
}

function create_eth_cfg_pri_suse {
	create_eth_cfg_suse $1
}

function create_bond_cfg_suse {
	local fn=$cfgdir/ifcfg-$1

	rm -f $fn
	echo BOOTPROTO=dhcp >>$fn
	echo STARTMODE=auto >>$fn
	echo BONDING_MASTER=yes >>$fn
	echo BONDING_SLAVE_0=$2 >>$fn
	echo BONDING_SLAVE_1=$3 >>$fn
	echo BONDING_MODULE_OPTS=\'mode=active-backup miimon=100 primary=$2\' >>$fn
}

function create_bond {
	local bondname=bond$bondcnt
	local primary
	local secondary

	local class_id1=`cat $sysdir/$1/device/class_id 2>/dev/null`
	local class_id2=`cat $sysdir/$2/device/class_id 2>/dev/null`

	if [ "$class_id1" = "$netvsc_cls" ]
	then
		primary=$2
		secondary=$1
	elif [ "$class_id2" = "$netvsc_cls" ]
	then
		primary=$1
		secondary=$2
	else
		return 0
	fi

	echo $'\nBond name:' $bondname

	echo configuring $primary
	create_eth_cfg_pri_$distro $primary $bondname

	echo configuring $secondary
	create_eth_cfg_$distro $secondary $bondname

	echo creating: $bondname with primary slave: $primary
	create_bond_cfg_$distro $bondname $primary $secondary

	let bondcnt=bondcnt+1
}

for (( i=0; i < $eth_cnt-1; i++ ))
do
        if [ -n "${list_match[$i]}" ]
        then
		create_bond ${list_eth[$i]} ${list_match[$i]}
        fi
done