5 use PVE
::Tools
qw(run_command);
10 use POSIX
qw(ECONNREFUSED);
14 # host network related utility functions
16 our $ipv4_reverse_mask = [
52 our $ipv4_mask_hash_localnet = {
54 '255.255.128.0' => 17,
55 '255.255.192.0' => 18,
56 '255.255.224.0' => 19,
57 '255.255.240.0' => 20,
58 '255.255.248.0' => 21,
59 '255.255.252.0' => 22,
60 '255.255.254.0' => 23,
61 '255.255.255.0' => 24,
62 '255.255.255.128' => 25,
63 '255.255.255.192' => 26,
64 '255.255.255.224' => 27,
65 '255.255.255.240' => 28,
66 '255.255.255.248' => 29,
67 '255.255.255.252' => 30,
70 sub setup_tc_rate_limit
{
71 my ($iface, $rate, $burst, $debug) = @_;
73 system("/sbin/tc class del dev $iface parent 1: classid 1:1 >/dev/null 2>&1");
74 system("/sbin/tc filter del dev $iface parent ffff: protocol all pref 50 u32 >/dev/null 2>&1");
75 system("/sbin/tc qdisc del dev $iface ingress >/dev/null 2>&1");
76 system("/sbin/tc qdisc del dev $iface root >/dev/null 2>&1");
80 # tbf does not work for unknown reason
81 #$TC qdisc add dev $DEV root tbf rate $RATE latency 100ms burst $BURST
82 # so we use htb instead
83 run_command
("/sbin/tc qdisc add dev $iface root handle 1: htb default 1");
84 run_command
("/sbin/tc class add dev $iface parent 1: classid 1:1 " .
85 "htb rate ${rate}bps burst ${burst}b");
87 run_command
("/sbin/tc qdisc add dev $iface handle ffff: ingress");
88 run_command
("/sbin/tc filter add dev $iface parent ffff: " .
89 "protocol all prio 50 u32 match u32 0 0 " .
90 "police rate ${rate}bps burst ${burst}b mtu 64kb " .
94 print "DEBUG tc settings\n";
95 system("/sbin/tc qdisc ls dev $iface");
96 system("/sbin/tc class ls dev $iface");
97 system("/sbin/tc filter ls dev $iface parent ffff:");
102 my ($iface, $rate) = @_;
105 $rate = int($rate*1024*1024);
106 my $burst = 1024*1024;
108 setup_tc_rate_limit
($iface, $rate, $burst, $debug);
111 my $read_bridge_mtu = sub {
114 my $mtu = PVE
::Tools
::file_read_firstline
("/sys/class/net/$bridge/mtu");
115 die "bridge '$bridge' does not exist\n" if !$mtu;
116 # avoid insecure dependency;
117 die "unable to parse mtu value" if $mtu !~ /^(\d+)$/;
123 my $parse_tap_device_name = sub {
124 my ($iface, $noerr) = @_;
128 if ($iface =~ m/^tap(\d+)i(\d+)$/) {
131 } elsif ($iface =~ m/^veth(\d+)i(\d+)$/) {
135 return undef if $noerr;
136 die "can't create firewall bridge for random interface name '$iface'\n";
139 return ($vmid, $devid);
142 my $compute_fwbr_names = sub {
143 my ($vmid, $devid) = @_;
145 my $fwbr = "fwbr${vmid}i${devid}";
146 # Note: the firewall use 'fwln+' to filter traffic to VMs
147 my $vethfw = "fwln${vmid}i${devid}";
148 my $vethfwpeer = "fwpr${vmid}p${devid}";
149 my $ovsintport = "fwln${vmid}o${devid}";
151 return ($fwbr, $vethfw, $vethfwpeer, $ovsintport);
154 my $cond_create_bridge = sub {
157 if (! -d
"/sys/class/net/$bridge") {
158 system("/sbin/brctl addbr $bridge") == 0 ||
159 die "can't add bridge '$bridge'\n";
163 my $bridge_add_interface = sub {
164 my ($bridge, $iface, $tag) = @_;
166 system("/sbin/brctl addif $bridge $iface") == 0 ||
167 die "can't add interface 'iface' to bridge '$bridge'\n";
169 my $vlan_aware = PVE
::Tools
::file_read_firstline
("/sys/class/net/$bridge/bridge/vlan_filtering");
173 system("/sbin/bridge vlan add dev $iface vid $tag pvid untagged") == 0 ||
174 die "unable to add vlan $tag to interface $iface\n";
176 system("/sbin/bridge vlan add dev $iface vid 2-4094") == 0 ||
177 die "unable to add default vlan tags to interface $iface\n";
182 my $ovs_bridge_add_port = sub {
183 my ($bridge, $iface, $tag, $internal) = @_;
185 my $cmd = "/usr/bin/ovs-vsctl add-port $bridge $iface";
186 $cmd .= " tag=$tag" if $tag;
187 $cmd .= " -- set Interface $iface type=internal" if $internal;
189 die "can't add ovs port '$iface'\n";
192 my $activate_interface = sub {
195 system("/sbin/ip link set $iface up") == 0 ||
196 die "can't activate interface '$iface'\n";
200 my ($iface, $bridge) = @_;
202 die "unable to get bridge setting\n" if !$bridge;
204 my $bridgemtu = &$read_bridge_mtu($bridge);
207 PVE
::Tools
::run_command
("/sbin/ifconfig $iface 0.0.0.0 promisc up mtu $bridgemtu");
209 die "interface activation failed\n" if $@;
213 my ($veth, $vethpeer, $bridge, $mac) = @_;
215 die "unable to get bridge setting\n" if !$bridge;
217 my $bridgemtu = &$read_bridge_mtu($bridge);
220 if (! -d
"/sys/class/net/$veth") {
221 my $cmd = "/sbin/ip link add name $veth type veth peer name $vethpeer mtu $bridgemtu";
222 $cmd .= " addr $mac" if $mac;
223 system($cmd) == 0 || die "can't create interface $veth\n";
227 &$activate_interface($veth);
228 &$activate_interface($vethpeer);
234 if (-d
"/sys/class/net/$veth") {
235 run_command
("/sbin/ip link delete dev $veth", outfunc
=> sub {}, errfunc
=> sub {});
240 my $create_firewall_bridge_linux = sub {
241 my ($iface, $bridge, $tag) = @_;
243 my ($vmid, $devid) = &$parse_tap_device_name($iface);
244 my ($fwbr, $vethfw, $vethfwpeer) = &$compute_fwbr_names($vmid, $devid);
246 &$cond_create_bridge($fwbr);
247 &$activate_interface($fwbr);
249 copy_bridge_config
($bridge, $fwbr);
250 veth_create
($vethfw, $vethfwpeer, $bridge);
252 &$bridge_add_interface($fwbr, $vethfw);
253 &$bridge_add_interface($bridge, $vethfwpeer, $tag);
255 &$bridge_add_interface($fwbr, $iface);
258 my $create_firewall_bridge_ovs = sub {
259 my ($iface, $bridge, $tag) = @_;
261 my ($vmid, $devid) = &$parse_tap_device_name($iface);
262 my ($fwbr, undef, undef, $ovsintport) = &$compute_fwbr_names($vmid, $devid);
264 my $bridgemtu = &$read_bridge_mtu($bridge);
266 &$cond_create_bridge($fwbr);
267 &$activate_interface($fwbr);
269 &$bridge_add_interface($fwbr, $iface);
271 &$ovs_bridge_add_port($bridge, $ovsintport, $tag, 1);
272 &$activate_interface($ovsintport);
274 # set the same mtu for ovs int port
275 PVE
::Tools
::run_command
("/sbin/ifconfig $ovsintport mtu $bridgemtu");
277 &$bridge_add_interface($fwbr, $ovsintport);
280 my $cleanup_firewall_bridge = sub {
283 my ($vmid, $devid) = &$parse_tap_device_name($iface, 1);
284 return if !defined($vmid);
285 my ($fwbr, $vethfw, $vethfwpeer, $ovsintport) = &$compute_fwbr_names($vmid, $devid);
287 # cleanup old port config from any openvswitch bridge
288 if (-d
"/sys/class/net/$ovsintport") {
289 run_command
("/usr/bin/ovs-vsctl del-port $ovsintport", outfunc
=> sub {}, errfunc
=> sub {});
292 # delete old vethfw interface
293 veth_delete
($vethfw);
295 # cleanup fwbr bridge
296 if (-d
"/sys/class/net/$fwbr") {
297 run_command
("/sbin/ip link set dev $fwbr down", outfunc
=> sub {}, errfunc
=> sub {});
298 run_command
("/sbin/brctl delbr $fwbr", outfunc
=> sub {}, errfunc
=> sub {});
303 my ($iface, $bridge, $tag, $firewall) = @_;
305 #cleanup old port config from any openvswitch bridge
306 eval {run_command
("/usr/bin/ovs-vsctl del-port $iface", outfunc
=> sub {}, errfunc
=> sub {}) };
308 if (-d
"/sys/class/net/$bridge/bridge") {
309 &$cleanup_firewall_bridge($iface); # remove stale devices
311 my $vlan_aware = PVE
::Tools
::file_read_firstline
("/sys/class/net/$bridge/bridge/vlan_filtering");
314 my $newbridge = activate_bridge_vlan
($bridge, $tag);
315 copy_bridge_config
($bridge, $newbridge) if $bridge ne $newbridge;
316 $bridge = $newbridge;
321 &$create_firewall_bridge_linux($iface, $bridge, $tag);
323 &$bridge_add_interface($bridge, $iface, $tag);
327 &$cleanup_firewall_bridge($iface); # remove stale devices
330 &$create_firewall_bridge_ovs($iface, $bridge, $tag);
332 &$ovs_bridge_add_port($bridge, $iface, $tag);
340 my $path= "/sys/class/net/$iface/brport/bridge";
342 my $bridge = basename
(readlink($path));
343 #avoid insecure dependency;
344 ($bridge) = $bridge =~ /(\S+)/;
346 system("/sbin/brctl delif $bridge $iface") == 0 ||
347 die "can't del interface '$iface' from bridge '$bridge'\n";
351 &$cleanup_firewall_bridge($iface);
354 sub copy_bridge_config
{
355 my ($br0, $br1) = @_;
357 return if $br0 eq $br1;
359 my $br_configs = [ 'ageing_time', 'stp_state', 'priority', 'forward_delay',
360 'hello_time', 'max_age', 'multicast_snooping', 'multicast_querier'];
362 foreach my $sysname (@$br_configs) {
364 my $v0 = PVE
::Tools
::file_read_firstline
("/sys/class/net/$br0/bridge/$sysname");
365 my $v1 = PVE
::Tools
::file_read_firstline
("/sys/class/net/$br1/bridge/$sysname");
367 PVE
::ProcFSTools
::write_proc_entry
("/sys/class/net/$br1/bridge/$sysname", $v0);
374 sub activate_bridge_vlan_slave
{
375 my ($bridgevlan, $iface, $tag) = @_;
376 my $ifacevlan = "${iface}.$tag";
378 # create vlan on $iface is not already exist
379 if (! -d
"/sys/class/net/$ifacevlan") {
380 system("/sbin/ip link add link $iface name ${iface}.${tag} type vlan id $tag") == 0 ||
381 die "can't add vlan tag $tag to interface $iface\n";
384 # be sure to have the $ifacevlan up
385 &$activate_interface($ifacevlan);
387 # test if $vlaniface is already enslaved in another bridge
388 my $path= "/sys/class/net/$ifacevlan/brport/bridge";
390 my $tbridge = basename
(readlink($path));
391 if ($tbridge ne $bridgevlan) {
392 die "interface $ifacevlan already exist in bridge $tbridge\n";
394 # Port already attached to bridge: do nothing.
399 # add $ifacevlan to the bridge
400 &$bridge_add_interface($bridgevlan, $ifacevlan);
403 sub activate_bridge_vlan
{
404 my ($bridge, $tag_param) = @_;
406 die "bridge '$bridge' is not active\n" if ! -d
"/sys/class/net/$bridge";
408 return $bridge if !defined($tag_param); # no vlan, simply return
410 my $tag = int($tag_param);
412 die "got strange vlan tag '$tag_param'\n" if $tag < 1 || $tag > 4094;
414 my $bridgevlan = "${bridge}v$tag";
417 my $dir = "/sys/class/net/$bridge/brif";
418 PVE
::Tools
::dir_glob_foreach
($dir, '((eth|bond)\d+(\.\d+)?)', sub {
422 die "no physical interface on bridge '$bridge'\n" if scalar(@ifaces) == 0;
424 # add bridgevlan if it doesn't already exist
425 if (! -d
"/sys/class/net/$bridgevlan") {
426 system("/sbin/brctl addbr $bridgevlan") == 0 ||
427 die "can't add bridge $bridgevlan\n";
430 # for each physical interface (eth or bridge) bind them to bridge vlan
431 foreach my $iface (@ifaces) {
432 activate_bridge_vlan_slave
($bridgevlan, $iface, $tag);
435 #fixme: set other bridge flags
437 # be sure to have the bridge up
438 system("/sbin/ip link set $bridgevlan up") == 0 ||
439 die "can't up bridge $bridgevlan\n";
445 my ($host, $port, $timeout) = @_;
449 $timeout = 3 if !$timeout; # sane default
451 # Net::Ping defaults to the echo port
454 # Net::Ping's port_number() implies service_check(1)
460 $result = PVE
::Tools
::run_with_timeout
($timeout, sub {
461 $sock = IO
::Socket
::IP-
>new(PeerHost
=> $host, PeerPort
=> $port, Type
=> SOCK_STREAM
);
462 $result = $refused if $! == ECONNREFUSED
;
473 my ($cidr, $version) = @_;
475 return if $cidr !~ m!^(\S+?)/(\S+)$!;
476 my ($ip, $prefix) = ($1, $2);
478 my $ipobj = Net
::IP-
>new($ip, $version);
481 $version = $ipobj->version();
483 my $binmask = Net
::IP
::ip_get_mask
($prefix, $version);
486 my $masked_binip = $ipobj->binip() & $binmask;
487 my $masked_ip = Net
::IP
::ip_bintoip
($masked_binip, $version);
488 return Net
::IP-
>new("$masked_ip/$prefix");
492 my ($ip, $cidr, $version) = @_;
494 my $cidr_obj = IP_from_cidr
($cidr, $version);
495 return undef if !$cidr_obj;
497 my $ip_obj = Net
::IP-
>new($ip, $version);
498 return undef if !$ip_obj;
500 return $cidr_obj->overlaps($ip_obj) == $Net::IP
::IP_B_IN_A_OVERLAP
;