5 use PVE
::Tools
qw(run_command);
10 # host network related utility functions
12 our $ipv4_reverse_mask = [
48 our $ipv4_mask_hash_localnet = {
50 '255.255.128.0' => 17,
51 '255.255.192.0' => 18,
52 '255.255.224.0' => 19,
53 '255.255.240.0' => 20,
54 '255.255.248.0' => 21,
55 '255.255.252.0' => 22,
56 '255.255.254.0' => 23,
57 '255.255.255.0' => 24,
58 '255.255.255.128' => 25,
59 '255.255.255.192' => 26,
60 '255.255.255.224' => 27,
61 '255.255.255.240' => 28,
62 '255.255.255.248' => 29,
63 '255.255.255.252' => 30,
66 sub setup_tc_rate_limit
{
67 my ($iface, $rate, $burst, $debug) = @_;
69 system("/sbin/tc class del dev $iface parent 1: classid 1:1 >/dev/null 2>&1");
70 system("/sbin/tc filter del dev $iface parent ffff: protocol ip prio 50 estimator 1sec 8sec >/dev/null 2>&1");
71 system("/sbin/tc qdisc del dev $iface ingress >/dev/null 2>&1");
72 system("/sbin/tc qdisc del dev $iface root >/dev/null 2>&1");
76 run_command
("/sbin/tc qdisc add dev $iface handle ffff: ingress");
78 # this does not work wit virtio - don't know why (setting "mtu 64kb" does not help)
79 #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");
80 # so we use avrate instead
81 run_command
("/sbin/tc filter add dev $iface parent ffff: " .
82 "protocol ip prio 50 estimator 1sec 8sec " .
83 "u32 match ip src 0.0.0.0/0 police avrate ${rate}bps drop flowid :1");
85 # tbf does not work for unknown reason
86 #$TC qdisc add dev $DEV root tbf rate $RATE latency 100ms burst $BURST
87 # so we use htb instead
88 run_command
("/sbin/tc qdisc add dev $iface root handle 1: htb default 1");
89 run_command
("/sbin/tc class add dev $iface parent 1: classid 1:1 " .
90 "htb rate ${rate}bps burst ${burst}b");
93 print "DEBUG tc settings\n";
94 system("/sbin/tc qdisc ls dev $iface");
95 system("/sbin/tc class ls dev $iface");
96 system("/sbin/tc filter ls dev $iface parent ffff:");
101 my ($iface, $rate) = @_;
104 $rate = int($rate*1024*1024);
105 my $burst = 1024*1024;
107 setup_tc_rate_limit
($iface, $rate, $burst, $debug);
110 my $read_bridge_mtu = sub {
113 my $mtu = PVE
::Tools
::file_read_firstline
("/sys/class/net/$bridge/mtu");
114 die "bridge '$bridge' does not exist\n" if !$mtu;
115 # avoid insecure dependency;
116 die "unable to parse mtu value" if $mtu !~ /^(\d+)$/;
122 my $parse_tap_devive_name = sub {
123 my ($iface, $noerr) = @_;
127 if ($iface =~ m/^tap(\d+)i(\d+)$/) {
130 } elsif ($iface =~ m/^veth(\d+)\.(\d+)$/) {
134 return undef if $noerr;
135 die "can't create firewall bridge for random interface name '$iface'\n";
138 return ($vmid, $devid);
141 my $compute_fwbr_names = sub {
142 my ($vmid, $devid) = @_;
144 my $fwbr = "fwbr${vmid}i${devid}";
145 # Note: the firewall use 'fwln+' to filter traffic to VMs
146 my $vethfw = "fwln${vmid}i${devid}";
147 my $vethfwpeer = "fwpr${vmid}p${devid}";
148 my $ovsintport = "fwln${vmid}o${devid}";
150 return ($fwbr, $vethfw, $vethfwpeer, $ovsintport);
153 my $cond_create_bridge = sub {
156 if (! -d
"/sys/class/net/$bridge") {
157 system("/sbin/brctl addbr $bridge") == 0 ||
158 die "can't add bridge '$bridge'\n";
162 my $bridge_add_interface = sub {
163 my ($bridge, $iface, $tag) = @_;
165 system("/sbin/brctl addif $bridge $iface") == 0 ||
166 die "can't add interface 'iface' to bridge '$bridge'\n";
168 my $vlan_aware = PVE
::Tools
::file_read_firstline
("/sys/class/net/$bridge/bridge/vlan_filtering");
172 system("/sbin/bridge vlan add dev $iface vid $tag pvid untagged") == 0 ||
173 die "unable to add vlan $tag to interface $iface\n";
175 system("/sbin/bridge vlan add dev $iface vid 2-4094") == 0 ||
176 die "unable to add vlan $tag to interface $iface\n";
181 my $ovs_bridge_add_port = sub {
182 my ($bridge, $iface, $tag, $internal) = @_;
184 my $cmd = "/usr/bin/ovs-vsctl add-port $bridge $iface";
185 $cmd .= " tag=$tag" if $tag;
186 $cmd .= " -- set Interface $iface type=internal" if $internal;
188 die "can't add ovs port '$iface'\n";
191 my $activate_interface = sub {
194 system("/sbin/ip link set $iface up") == 0 ||
195 die "can't activate interface '$iface'\n";
199 my ($iface, $bridge) = @_;
201 die "unable to get bridge setting\n" if !$bridge;
203 my $bridgemtu = &$read_bridge_mtu($bridge);
206 PVE
::Tools
::run_command
("/sbin/ifconfig $iface 0.0.0.0 promisc up mtu $bridgemtu");
208 die "interface activation failed\n" if $@;
212 my ($veth, $vethpeer, $bridge, $mac) = @_;
214 die "unable to get bridge setting\n" if !$bridge;
216 my $bridgemtu = &$read_bridge_mtu($bridge);
219 if (! -d
"/sys/class/net/$veth") {
220 my $cmd = "/sbin/ip link add name $veth type veth peer name $vethpeer mtu $bridgemtu";
221 $cmd .= " addr $mac" if $mac;
222 system($cmd) == 0 || die "can't create interface $veth\n";
226 &$activate_interface($veth);
227 &$activate_interface($vethpeer);
233 if (-d
"/sys/class/net/$veth") {
234 run_command
("/sbin/ip link delete dev $veth", outfunc
=> sub {}, errfunc
=> sub {});
239 my $create_firewall_bridge_linux = sub {
240 my ($iface, $bridge, $tag) = @_;
242 my ($vmid, $devid) = &$parse_tap_devive_name($iface);
243 my ($fwbr, $vethfw, $vethfwpeer) = &$compute_fwbr_names($vmid, $devid);
245 &$cond_create_bridge($fwbr);
246 &$activate_interface($fwbr);
248 copy_bridge_config
($bridge, $fwbr);
249 veth_create
($vethfw, $vethfwpeer, $bridge);
251 &$bridge_add_interface($fwbr, $vethfw);
252 &$bridge_add_interface($bridge, $vethfwpeer, $tag);
254 &$bridge_add_interface($fwbr, $iface);
257 my $create_firewall_bridge_ovs = sub {
258 my ($iface, $bridge, $tag) = @_;
260 my ($vmid, $devid) = &$parse_tap_devive_name($iface);
261 my ($fwbr, undef, undef, $ovsintport) = &$compute_fwbr_names($vmid, $devid);
263 my $bridgemtu = &$read_bridge_mtu($bridge);
265 &$cond_create_bridge($fwbr);
266 &$activate_interface($fwbr);
268 &$bridge_add_interface($fwbr, $iface);
270 &$ovs_bridge_add_port($bridge, $ovsintport, $tag, 1);
271 &$activate_interface($ovsintport);
273 # set the same mtu for ovs int port
274 PVE
::Tools
::run_command
("/sbin/ifconfig $ovsintport mtu $bridgemtu");
276 &$bridge_add_interface($fwbr, $ovsintport);
279 my $cleanup_firewall_bridge = sub {
282 my ($vmid, $devid) = &$parse_tap_devive_name($iface, 1);
283 return if !defined($vmid);
284 my ($fwbr, $vethfw, $vethfwpeer, $ovsintport) = &$compute_fwbr_names($vmid, $devid);
286 # cleanup old port config from any openvswitch bridge
287 if (-d
"/sys/class/net/$ovsintport") {
288 run_command
("/usr/bin/ovs-vsctl del-port $ovsintport", outfunc
=> sub {}, errfunc
=> sub {});
291 # delete old vethfw interface
292 veth_delete
($vethfw);
294 # cleanup fwbr bridge
295 if (-d
"/sys/class/net/$fwbr") {
296 run_command
("/sbin/ip link set dev $fwbr down", outfunc
=> sub {}, errfunc
=> sub {});
297 run_command
("/sbin/brctl delbr $fwbr", outfunc
=> sub {}, errfunc
=> sub {});
302 my ($iface, $bridge, $tag, $firewall) = @_;
304 #cleanup old port config from any openvswitch bridge
305 eval {run_command
("/usr/bin/ovs-vsctl del-port $iface", outfunc
=> sub {}, errfunc
=> sub {}) };
307 if (-d
"/sys/class/net/$bridge/bridge") {
308 &$cleanup_firewall_bridge($iface); # remove stale devices
310 my $vlan_aware = PVE
::Tools
::file_read_firstline
("/sys/class/net/$bridge/bridge/vlan_filtering");
313 my $newbridge = activate_bridge_vlan
($bridge, $tag);
314 copy_bridge_config
($bridge, $newbridge) if $bridge ne $newbridge;
315 $bridge = $newbridge;
320 &$create_firewall_bridge_linux($iface, $bridge, $tag);
322 &$bridge_add_interface($bridge, $iface, $tag);
326 &$cleanup_firewall_bridge($iface); # remove stale devices
329 &$create_firewall_bridge_ovs($iface, $bridge, $tag);
331 &$ovs_bridge_add_port($bridge, $iface, $tag);
339 my $path= "/sys/class/net/$iface/brport/bridge";
341 my $bridge = basename
(readlink($path));
342 #avoid insecure dependency;
343 ($bridge) = $bridge =~ /(\S+)/;
345 system("/sbin/brctl delif $bridge $iface") == 0 ||
346 die "can't del interface '$iface' from bridge '$bridge'\n";
350 &$cleanup_firewall_bridge($iface);
353 sub copy_bridge_config
{
354 my ($br0, $br1) = @_;
356 return if $br0 eq $br1;
358 my $br_configs = [ 'ageing_time', 'stp_state', 'priority', 'forward_delay',
359 'hello_time', 'max_age', 'multicast_snooping', 'multicast_querier'];
361 foreach my $sysname (@$br_configs) {
363 my $v0 = PVE
::Tools
::file_read_firstline
("/sys/class/net/$br0/bridge/$sysname");
364 my $v1 = PVE
::Tools
::file_read_firstline
("/sys/class/net/$br1/bridge/$sysname");
366 PVE
::ProcFSTools
::write_proc_entry
("/sys/class/net/$br1/bridge/$sysname", $v0);
373 sub activate_bridge_vlan_slave
{
374 my ($bridgevlan, $iface, $tag) = @_;
375 my $ifacevlan = "${iface}.$tag";
377 # create vlan on $iface is not already exist
378 if (! -d
"/sys/class/net/$ifacevlan") {
379 system("/sbin/ip link add link $iface name ${iface}.${tag} type vlan id $tag") == 0 ||
380 die "can't add vlan tag $tag to interface $iface\n";
383 # be sure to have the $ifacevlan up
384 &$activate_interface($ifacevlan);
386 # test if $vlaniface is already enslaved in another bridge
387 my $path= "/sys/class/net/$ifacevlan/brport/bridge";
389 my $tbridge = basename
(readlink($path));
390 if ($tbridge ne $bridgevlan) {
391 die "interface $ifacevlan already exist in bridge $tbridge\n";
393 # Port already attached to bridge: do nothing.
398 # add $ifacevlan to the bridge
399 &$bridge_add_interface($bridgevlan, $ifacevlan);
402 sub activate_bridge_vlan
{
403 my ($bridge, $tag_param) = @_;
405 die "bridge '$bridge' is not active\n" if ! -d
"/sys/class/net/$bridge";
407 return $bridge if !defined($tag_param); # no vlan, simply return
409 my $tag = int($tag_param);
411 die "got strange vlan tag '$tag_param'\n" if $tag < 1 || $tag > 4094;
413 my $bridgevlan = "${bridge}v$tag";
416 my $dir = "/sys/class/net/$bridge/brif";
417 PVE
::Tools
::dir_glob_foreach
($dir, '((eth|bond)\d+)', sub {
421 die "no physical interface on bridge '$bridge'\n" if scalar(@ifaces) == 0;
423 # add bridgevlan if it doesn't already exist
424 if (! -d
"/sys/class/net/$bridgevlan") {
425 system("/sbin/brctl addbr $bridgevlan") == 0 ||
426 die "can't add bridge $bridgevlan\n";
429 # for each physical interface (eth or bridge) bind them to bridge vlan
430 foreach my $iface (@ifaces) {
431 activate_bridge_vlan_slave
($bridgevlan, $iface, $tag);
434 #fixme: set other bridge flags
436 # be sure to have the bridge up
437 system("/sbin/ip link set $bridgevlan up") == 0 ||
438 die "can't up bridge $bridgevlan\n";