5 use PVE
::Tools
qw(run_command);
10 # host network related utility functions
12 sub setup_tc_rate_limit
{
13 my ($iface, $rate, $burst, $debug) = @_;
15 system("/sbin/tc class del dev $iface parent 1: classid 1:1 >/dev/null 2>&1");
16 system("/sbin/tc filter del dev $iface parent ffff: protocol ip prio 50 estimator 1sec 8sec >/dev/null 2>&1");
17 system("/sbin/tc qdisc del dev $iface ingress >/dev/null 2>&1");
18 system("/sbin/tc qdisc del dev $iface root >/dev/null 2>&1");
22 run_command
("/sbin/tc qdisc add dev $iface handle ffff: ingress");
24 # this does not work wit virtio - don't know why (setting "mtu 64kb" does not help)
25 #run_command("/sbin/tc filter add dev $iface parent ffff: protocol ip prio 50 u32 match ip src 0.0.0.0/0 police rate ${rate}bps burst ${burst}b drop flowid :1");
26 # so we use avrate instead
27 run_command
("/sbin/tc filter add dev $iface parent ffff: " .
28 "protocol ip prio 50 estimator 1sec 8sec " .
29 "u32 match ip src 0.0.0.0/0 police avrate ${rate}bps drop flowid :1");
31 # tbf does not work for unknown reason
32 #$TC qdisc add dev $DEV root tbf rate $RATE latency 100ms burst $BURST
33 # so we use htb instead
34 run_command
("/sbin/tc qdisc add dev $iface root handle 1: htb default 1");
35 run_command
("/sbin/tc class add dev $iface parent 1: classid 1:1 " .
36 "htb rate ${rate}bps burst ${burst}b");
39 print "DEBUG tc settings\n";
40 system("/sbin/tc qdisc ls dev $iface");
41 system("/sbin/tc class ls dev $iface");
42 system("/sbin/tc filter ls dev $iface parent ffff:");
47 my ($iface, $rate) = @_;
50 $rate = int($rate*1024*1024);
51 my $burst = 1024*1024;
53 setup_tc_rate_limit
($iface, $rate, $burst, $debug);
56 my $read_bridge_mtu = sub {
59 my $mtu = PVE
::Tools
::file_read_firstline
("/sys/class/net/$bridge/mtu");
60 die "bridge '$bridge' does not exist\n" if !$mtu;
61 # avoid insecure dependency;
62 die "unable to parse mtu value" if $mtu !~ /^(\d+)$/;
68 my $parse_tap_devive_name = sub {
69 my ($iface, $noerr) = @_;
73 if ($iface =~ m/^tap(\d+)i(\d+)$/) {
76 } elsif ($iface =~ m/^veth(\d+)\.(\d+)$/) {
80 return undef if $noerr;
81 die "can't create firewall bridge for random interface name '$iface'\n";
84 return ($vmid, $devid);
87 my $compute_fwbr_names = sub {
88 my ($vmid, $devid) = @_;
90 my $fwbr = "fwbr${vmid}i${devid}";
91 # Note: the firewall use 'fwln+' to filter traffic to VMs
92 my $vethfw = "fwln${vmid}i${devid}";
93 my $vethfwpeer = "fwpr${vmid}p${devid}";
94 my $ovsintport = "fwln${vmid}o${devid}";
96 return ($fwbr, $vethfw, $vethfwpeer, $ovsintport);
99 my $cond_create_bridge = sub {
102 if (! -d
"/sys/class/net/$bridge") {
103 system("/sbin/brctl addbr $bridge") == 0 ||
104 die "can't add bridge '$bridge'\n";
108 my $bridge_add_interface = sub {
109 my ($bridge, $iface) = @_;
111 system("/sbin/brctl addif $bridge $iface") == 0 ||
112 die "can't add interface 'iface' to bridge '$bridge'\n";
115 my $ovs_bridge_add_port = sub {
116 my ($bridge, $iface, $tag, $internal) = @_;
118 my $cmd = "/usr/bin/ovs-vsctl add-port $bridge $iface";
119 $cmd .= " tag=$tag" if $tag;
120 $cmd .= " -- set Interface $iface type=internal" if $internal;
122 die "can't add ovs port '$iface'\n";
125 my $activate_interface = sub {
128 system("/sbin/ip link set $iface up") == 0 ||
129 die "can't activate interface '$iface'\n";
133 my ($iface, $bridge) = @_;
135 die "unable to get bridge setting\n" if !$bridge;
137 my $bridgemtu = &$read_bridge_mtu($bridge);
140 PVE
::Tools
::run_command
("/sbin/ifconfig $iface 0.0.0.0 promisc up mtu $bridgemtu");
142 die "interface activation failed\n" if $@;
145 my $create_firewall_bridge_linux = sub {
146 my ($iface, $bridge) = @_;
148 my ($vmid, $devid) = &$parse_tap_devive_name($iface);
149 my ($fwbr, $vethfw, $vethfwpeer) = &$compute_fwbr_names($vmid, $devid);
151 my $bridgemtu = &$read_bridge_mtu($bridge);
153 &$cond_create_bridge($fwbr);
154 &$activate_interface($fwbr);
156 copy_bridge_config
($bridge, $fwbr);
158 if (! -d
"/sys/class/net/$vethfw") {
159 system("/sbin/ip link add name $vethfw type veth peer name $vethfwpeer mtu $bridgemtu") == 0 ||
160 die "can't create interface $vethfw\n";
164 &$activate_interface($vethfw);
165 &$activate_interface($vethfwpeer);
167 &$bridge_add_interface($fwbr, $vethfw);
168 &$bridge_add_interface($bridge, $vethfwpeer);
173 my $create_firewall_bridge_ovs = sub {
174 my ($iface, $bridge, $tag) = @_;
176 my ($vmid, $devid) = &$parse_tap_devive_name($iface);
177 my ($fwbr, undef, undef, $ovsintport) = &$compute_fwbr_names($vmid, $devid);
179 my $bridgemtu = &$read_bridge_mtu($bridge);
181 &$cond_create_bridge($fwbr);
182 &$activate_interface($fwbr);
184 &$bridge_add_interface($fwbr, $iface);
186 &$ovs_bridge_add_port($bridge, $ovsintport, $tag, 1);
187 &$activate_interface($ovsintport);
189 # set the same mtu for ovs int port
190 PVE
::Tools
::run_command
("/sbin/ifconfig $ovsintport mtu $bridgemtu");
192 &$bridge_add_interface($fwbr, $ovsintport);
195 my $cleanup_firewall_bridge = sub {
198 my ($vmid, $devid) = &$parse_tap_devive_name($iface, 1);
199 return if !defined($vmid);
200 my ($fwbr, $vethfw, $vethfwpeer, $ovsintport) = &$compute_fwbr_names($vmid, $devid);
202 # cleanup old port config from any openvswitch bridge
203 if (-d
"/sys/class/net/$ovsintport") {
204 run_command
("/usr/bin/ovs-vsctl del-port $ovsintport", outfunc
=> sub {}, errfunc
=> sub {});
207 # delete old vethfw interface
208 if (-d
"/sys/class/net/$vethfw") {
209 run_command
("/sbin/ip link delete dev $vethfw", outfunc
=> sub {}, errfunc
=> sub {});
212 # cleanup fwbr bridge
213 if (-d
"/sys/class/net/$fwbr") {
214 run_command
("/sbin/ip link set dev $fwbr down", outfunc
=> sub {}, errfunc
=> sub {});
215 run_command
("/sbin/brctl delbr $fwbr", outfunc
=> sub {}, errfunc
=> sub {});
220 my ($iface, $bridge, $tag, $firewall) = @_;
222 #cleanup old port config from any openvswitch bridge
223 eval {run_command
("/usr/bin/ovs-vsctl del-port $iface", outfunc
=> sub {}, errfunc
=> sub {}) };
225 if (-d
"/sys/class/net/$bridge/bridge") {
226 &$cleanup_firewall_bridge($iface); # remove stale devices
228 my $newbridge = activate_bridge_vlan
($bridge, $tag);
229 copy_bridge_config
($bridge, $newbridge) if $bridge ne $newbridge;
231 $newbridge = &$create_firewall_bridge_linux($iface, $newbridge) if $firewall;
233 &$bridge_add_interface($newbridge, $iface);
235 &$cleanup_firewall_bridge($iface); # remove stale devices
238 &$create_firewall_bridge_ovs($iface, $bridge, $tag);
240 &$ovs_bridge_add_port($bridge, $iface, $tag);
248 my $path= "/sys/class/net/$iface/brport/bridge";
250 my $bridge = basename
(readlink($path));
251 #avoid insecure dependency;
252 ($bridge) = $bridge =~ /(\S+)/;
254 system("/sbin/brctl delif $bridge $iface") == 0 ||
255 die "can't del interface '$iface' from bridge '$bridge'\n";
259 &$cleanup_firewall_bridge($iface);
262 sub copy_bridge_config
{
263 my ($br0, $br1) = @_;
265 return if $br0 eq $br1;
267 my $br_configs = [ 'ageing_time', 'stp_state', 'priority', 'forward_delay',
268 'hello_time', 'max_age', 'multicast_snooping', 'multicast_querier'];
270 foreach my $sysname (@$br_configs) {
272 my $v0 = PVE
::Tools
::file_read_firstline
("/sys/class/net/$br0/bridge/$sysname");
273 my $v1 = PVE
::Tools
::file_read_firstline
("/sys/class/net/$br1/bridge/$sysname");
275 PVE
::ProcFSTools
::write_proc_entry
("/sys/class/net/$br1/bridge/$sysname", $v0);
282 sub activate_bridge_vlan_slave
{
283 my ($bridgevlan, $iface, $tag) = @_;
284 my $ifacevlan = "${iface}.$tag";
286 # create vlan on $iface is not already exist
287 if (! -d
"/sys/class/net/$ifacevlan") {
288 system("/sbin/vconfig add $iface $tag") == 0 ||
289 die "can't add vlan tag $tag to interface $iface\n";
292 # be sure to have the $ifacevlan up
293 &$activate_interface($ifacevlan);
295 # test if $vlaniface is already enslaved in another bridge
296 my $path= "/sys/class/net/$ifacevlan/brport/bridge";
298 my $tbridge = basename
(readlink($path));
299 if ($tbridge ne $bridgevlan) {
300 die "interface $ifacevlan already exist in bridge $tbridge\n";
302 # Port already attached to bridge: do nothing.
307 # add $ifacevlan to the bridge
308 &$bridge_add_interface($bridgevlan, $ifacevlan);
311 sub activate_bridge_vlan
{
312 my ($bridge, $tag_param) = @_;
314 die "bridge '$bridge' is not active\n" if ! -d
"/sys/class/net/$bridge";
316 return $bridge if !defined($tag_param); # no vlan, simply return
318 my $tag = int($tag_param);
320 die "got strange vlan tag '$tag_param'\n" if $tag < 1 || $tag > 4094;
322 my $bridgevlan = "${bridge}v$tag";
325 my $dir = "/sys/class/net/$bridge/brif";
326 PVE
::Tools
::dir_glob_foreach
($dir, '((eth|bond)\d+)', sub {
330 die "no physical interface on bridge '$bridge'\n" if scalar(@ifaces) == 0;
332 # add bridgevlan if it doesn't already exist
333 if (! -d
"/sys/class/net/$bridgevlan") {
334 system("/sbin/brctl addbr $bridgevlan") == 0 ||
335 die "can't add bridge $bridgevlan\n";
338 # for each physical interface (eth or bridge) bind them to bridge vlan
339 foreach my $iface (@ifaces) {
340 activate_bridge_vlan_slave
($bridgevlan, $iface, $tag);
343 #fixme: set other bridge flags
345 # be sure to have the bridge up
346 system("/sbin/ip link set $bridgevlan up") == 0 ||
347 die "can't up bridge $bridgevlan\n";