8 use PVE
::Tools
qw(run_command lock_file);
13 use POSIX
qw(ECONNREFUSED);
14 use Socket
qw(NI_NUMERICHOST NI_NUMERICSERV);
16 # host network related utility functions
18 our $PHYSICAL_NIC_RE = qr/(?:eth\d+|en[^:.]+|ib\d+)/;
20 our $ipv4_reverse_mask = [
56 our $ipv4_mask_hash_localnet = {
66 '255.255.128.0' => 17,
67 '255.255.192.0' => 18,
68 '255.255.224.0' => 19,
69 '255.255.240.0' => 20,
70 '255.255.248.0' => 21,
71 '255.255.252.0' => 22,
72 '255.255.254.0' => 23,
73 '255.255.255.0' => 24,
74 '255.255.255.128' => 25,
75 '255.255.255.192' => 26,
76 '255.255.255.224' => 27,
77 '255.255.255.240' => 28,
78 '255.255.255.248' => 29,
79 '255.255.255.252' => 30,
80 '255.255.255.254' => 31,
81 '255.255.255.255' => 32,
84 sub setup_tc_rate_limit
{
85 my ($iface, $rate, $burst, $debug) = @_;
87 # these are allowed / expected to fail, e.g. when there is no previous rate limit to remove
88 eval { run_command
("/sbin/tc class del dev $iface parent 1: classid 1:1 >/dev/null 2>&1"); };
89 eval { run_command
("/sbin/tc filter del dev $iface parent ffff: protocol all pref 50 u32 >/dev/null 2>&1"); };
90 eval { run_command
("/sbin/tc qdisc del dev $iface ingress >/dev/null 2>&1"); };
91 eval { run_command
("/sbin/tc qdisc del dev $iface root >/dev/null 2>&1"); };
95 # tbf does not work for unknown reason
96 #$TC qdisc add dev $DEV root tbf rate $RATE latency 100ms burst $BURST
97 # so we use htb instead
98 run_command
("/sbin/tc qdisc add dev $iface root handle 1: htb default 1");
99 run_command
("/sbin/tc class add dev $iface parent 1: classid 1:1 " .
100 "htb rate ${rate}bps burst ${burst}b");
102 run_command
("/sbin/tc qdisc add dev $iface handle ffff: ingress");
103 run_command
("/sbin/tc filter add dev $iface parent ffff: " .
105 "police rate ${rate}bps burst ${burst}b mtu 64kb " .
109 print "DEBUG tc settings\n";
110 system("/sbin/tc qdisc ls dev $iface");
111 system("/sbin/tc class ls dev $iface");
112 system("/sbin/tc filter ls dev $iface parent ffff:");
117 my ($iface, $rate) = @_;
120 $rate = int($rate*1024*1024) if $rate;
121 my $burst = 1024*1024;
123 setup_tc_rate_limit
($iface, $rate, $burst, $debug);
126 my $read_bridge_mtu = sub {
129 my $mtu = PVE
::Tools
::file_read_firstline
("/sys/class/net/$bridge/mtu");
130 die "bridge '$bridge' does not exist\n" if !$mtu;
131 # avoid insecure dependency;
132 die "unable to parse mtu value" if $mtu !~ /^(\d+)$/;
138 my $parse_tap_device_name = sub {
139 my ($iface, $noerr) = @_;
143 if ($iface =~ m/^tap(\d+)i(\d+)$/) {
146 } elsif ($iface =~ m/^veth(\d+)i(\d+)$/) {
150 return undef if $noerr;
151 die "can't create firewall bridge for random interface name '$iface'\n";
154 return ($vmid, $devid);
157 my $compute_fwbr_names = sub {
158 my ($vmid, $devid) = @_;
160 my $fwbr = "fwbr${vmid}i${devid}";
161 # Note: the firewall use 'fwln+' to filter traffic to VMs
162 my $vethfw = "fwln${vmid}i${devid}";
163 my $vethfwpeer = "fwpr${vmid}p${devid}";
164 my $ovsintport = "fwln${vmid}o${devid}";
166 return ($fwbr, $vethfw, $vethfwpeer, $ovsintport);
169 sub iface_delete
($) {
171 run_command
(['/sbin/ip', 'link', 'delete', 'dev', $iface], noerr
=> 1)
172 == 0 or die "failed to delete interface '$iface'\n";
175 sub iface_create
($$@) {
176 my ($iface, $type, @args) = @_;
177 run_command
(['/sbin/ip', 'link', 'add', $iface, 'type', $type, @args], noerr
=> 1)
178 == 0 or die "failed to create interface '$iface'\n";
182 my ($iface, @opts) = @_;
183 run_command
(['/sbin/ip', 'link', 'set', $iface, @opts], noerr
=> 1)
184 == 0 or die "failed to set interface options for '$iface' (".join(' ', @opts).")\n";
187 # helper for nicer error messages:
188 sub iface_set_master
($$) {
189 my ($iface, $master) = @_;
190 if (defined($master)) {
191 eval { iface_set
($iface, 'master', $master) };
192 die "can't enslave '$iface' to '$master'\n" if $@;
194 eval { iface_set
($iface, 'nomaster') };
195 die "can't unenslave '$iface'\n" if $@;
199 my $cond_create_bridge = sub {
202 if (! -d
"/sys/class/net/$bridge") {
203 iface_create
($bridge, 'bridge');
204 disable_ipv6
($bridge);
210 return if !-d
'/proc/sys/net/ipv6'; # ipv6 might be completely disabled
211 my $file = "/proc/sys/net/ipv6/conf/$iface/disable_ipv6";
212 open(my $fh, '>', $file) or die "failed to open $file for writing: $!\n";
213 print {$fh} "1\n" or die "failed to disable link-local ipv6 for $iface\n";
217 my $bridge_add_interface = sub {
218 my ($bridge, $iface, $tag, $trunks) = @_;
220 # drop link local address (it can't be used when on a bridge anyway)
221 disable_ipv6
($iface);
222 iface_set_master
($iface, $bridge);
224 my $vlan_aware = PVE
::Tools
::file_read_firstline
("/sys/class/net/$bridge/bridge/vlan_filtering");
228 system({'/sbin/bridge'} 'bridge', 'vlan', 'del', 'dev', $iface, 'vid', '1-4094') == 0
229 or die "failed to remove default vlan tags of $iface\n";
230 system({'/sbin/bridge'} 'bridge', 'vlan', 'add', 'dev', $iface, 'vid', $tag, 'pvid', 'untagged') == 0
231 or die "unable to add vlan $tag to interface $iface\n";
233 warn "Caution: Setting VLAN ID 1 on a VLAN aware bridge may be dangerous\n" if $tag == 1;
235 system("/sbin/bridge vlan add dev $iface vid 2-4094") == 0 ||
236 die "unable to add default vlan tags to interface $iface\n" if !$trunks;
240 my @trunks_array = split /;/, $trunks;
241 foreach my $trunk (@trunks_array) {
242 system("/sbin/bridge vlan add dev $iface vid $trunk") == 0 ||
243 die "unable to add vlan $trunk to interface $iface\n";
249 my $ovs_bridge_add_port = sub {
250 my ($bridge, $iface, $tag, $internal, $trunks) = @_;
252 $trunks =~ s/;/,/g if $trunks;
254 my $cmd = "/usr/bin/ovs-vsctl add-port $bridge $iface";
255 $cmd .= " tag=$tag" if $tag;
256 $cmd .= " trunks=". join(',', $trunks) if $trunks;
257 $cmd .= " vlan_mode=native-untagged" if $tag && $trunks;
259 $cmd .= " -- set Interface $iface type=internal" if $internal;
261 die "can't add ovs port '$iface'\n";
262 disable_ipv6
($iface);
265 my $activate_interface = sub {
268 system("/sbin/ip link set $iface up") == 0 ||
269 die "can't activate interface '$iface'\n";
273 my ($iface, $bridge) = @_;
275 die "unable to get bridge setting\n" if !$bridge;
277 my $bridgemtu = &$read_bridge_mtu($bridge);
280 disable_ipv6
($iface);
281 PVE
::Tools
::run_command
(['/sbin/ip', 'link', 'set', $iface, 'up', 'promisc', 'on', 'mtu', $bridgemtu]);
283 die "interface activation failed\n" if $@;
287 my ($veth, $vethpeer, $bridge, $mac) = @_;
289 die "unable to get bridge setting\n" if !$bridge;
291 my $bridgemtu = &$read_bridge_mtu($bridge);
294 if (! -d
"/sys/class/net/$veth") {
295 my $cmd = "/sbin/ip link add name $veth mtu $bridgemtu type veth peer name $vethpeer mtu $bridgemtu";
296 $cmd .= " addr $mac" if $mac;
297 system($cmd) == 0 || die "can't create interface $veth\n";
302 disable_ipv6
($vethpeer);
303 &$activate_interface($veth);
304 &$activate_interface($vethpeer);
310 if (-d
"/sys/class/net/$veth") {
313 eval { tap_unplug
($veth) };
316 my $create_firewall_bridge_linux = sub {
317 my ($iface, $bridge, $tag, $trunks) = @_;
319 my ($vmid, $devid) = &$parse_tap_device_name($iface);
320 my ($fwbr, $vethfw, $vethfwpeer) = &$compute_fwbr_names($vmid, $devid);
322 &$cond_create_bridge($fwbr);
323 &$activate_interface($fwbr);
325 copy_bridge_config
($bridge, $fwbr);
326 veth_create
($vethfw, $vethfwpeer, $bridge);
328 &$bridge_add_interface($fwbr, $vethfw);
329 &$bridge_add_interface($bridge, $vethfwpeer, $tag, $trunks);
331 &$bridge_add_interface($fwbr, $iface);
334 my $create_firewall_bridge_ovs = sub {
335 my ($iface, $bridge, $tag, $trunks) = @_;
337 my ($vmid, $devid) = &$parse_tap_device_name($iface);
338 my ($fwbr, undef, undef, $ovsintport) = &$compute_fwbr_names($vmid, $devid);
340 my $bridgemtu = &$read_bridge_mtu($bridge);
342 &$cond_create_bridge($fwbr);
343 &$activate_interface($fwbr);
345 &$bridge_add_interface($fwbr, $iface);
347 &$ovs_bridge_add_port($bridge, $ovsintport, $tag, 1, $trunks);
348 &$activate_interface($ovsintport);
350 # set the same mtu for ovs int port
351 PVE
::Tools
::run_command
(['/sbin/ip', 'link', 'set', $ovsintport, 'mtu', $bridgemtu]);
353 &$bridge_add_interface($fwbr, $ovsintport);
356 my $cleanup_firewall_bridge = sub {
359 my ($vmid, $devid) = &$parse_tap_device_name($iface, 1);
360 return if !defined($vmid);
361 my ($fwbr, $vethfw, $vethfwpeer, $ovsintport) = &$compute_fwbr_names($vmid, $devid);
363 # cleanup old port config from any openvswitch bridge
364 if (-d
"/sys/class/net/$ovsintport") {
365 run_command
("/usr/bin/ovs-vsctl del-port $ovsintport", outfunc
=> sub {}, errfunc
=> sub {});
368 # delete old vethfw interface
369 veth_delete
($vethfw);
371 # cleanup fwbr bridge
372 if (-d
"/sys/class/net/$fwbr") {
378 my ($iface, $bridge, $tag, $firewall, $trunks, $rate) = @_;
380 #cleanup old port config from any openvswitch bridge
381 eval {run_command
("/usr/bin/ovs-vsctl del-port $iface", outfunc
=> sub {}, errfunc
=> sub {}) };
383 if (-d
"/sys/class/net/$bridge/bridge") {
384 &$cleanup_firewall_bridge($iface); # remove stale devices
386 my $vlan_aware = PVE
::Tools
::file_read_firstline
("/sys/class/net/$bridge/bridge/vlan_filtering");
389 die "vlan aware feature need to be enabled to use trunks" if $trunks;
390 my $newbridge = activate_bridge_vlan
($bridge, $tag);
391 copy_bridge_config
($bridge, $newbridge) if $bridge ne $newbridge;
392 $bridge = $newbridge;
397 &$create_firewall_bridge_linux($iface, $bridge, $tag, $trunks);
399 &$bridge_add_interface($bridge, $iface, $tag, $trunks);
403 &$cleanup_firewall_bridge($iface); # remove stale devices
406 &$create_firewall_bridge_ovs($iface, $bridge, $tag, $trunks);
408 &$ovs_bridge_add_port($bridge, $iface, $tag, undef, $trunks);
412 tap_rate_limit
($iface, $rate);
418 my $path= "/sys/class/net/$iface/brport/bridge";
420 my $bridge = basename
(readlink($path));
421 #avoid insecure dependency;
422 ($bridge) = $bridge =~ /(\S+)/;
424 iface_set_master
($iface, undef);
427 &$cleanup_firewall_bridge($iface);
428 #cleanup old port config from any openvswitch bridge
429 eval {run_command
("/usr/bin/ovs-vsctl del-port $iface", outfunc
=> sub {}, errfunc
=> sub {}) };
432 sub copy_bridge_config
{
433 my ($br0, $br1) = @_;
435 return if $br0 eq $br1;
437 my $br_configs = [ 'ageing_time', 'stp_state', 'priority', 'forward_delay',
438 'hello_time', 'max_age', 'multicast_snooping', 'multicast_querier'];
440 foreach my $sysname (@$br_configs) {
442 my $v0 = PVE
::Tools
::file_read_firstline
("/sys/class/net/$br0/bridge/$sysname");
443 my $v1 = PVE
::Tools
::file_read_firstline
("/sys/class/net/$br1/bridge/$sysname");
445 PVE
::ProcFSTools
::write_proc_entry
("/sys/class/net/$br1/bridge/$sysname", $v0);
452 sub activate_bridge_vlan_slave
{
453 my ($bridgevlan, $iface, $tag) = @_;
454 my $ifacevlan = "${iface}.$tag";
456 # create vlan on $iface is not already exist
457 if (! -d
"/sys/class/net/$ifacevlan") {
458 system("/sbin/ip link add link $iface name $ifacevlan type vlan id $tag") == 0 ||
459 die "can't add vlan tag $tag to interface $iface\n";
461 # remove ipv6 link-local address before activation
462 disable_ipv6
($ifacevlan);
465 # be sure to have the $ifacevlan up
466 &$activate_interface($ifacevlan);
468 # test if $vlaniface is already enslaved in another bridge
469 my $path= "/sys/class/net/$ifacevlan/brport/bridge";
471 my $tbridge = basename
(readlink($path));
472 if ($tbridge ne $bridgevlan) {
473 die "interface $ifacevlan already exist in bridge $tbridge\n";
475 # Port already attached to bridge: do nothing.
480 # add $ifacevlan to the bridge
481 &$bridge_add_interface($bridgevlan, $ifacevlan);
484 sub activate_bridge_vlan
{
485 my ($bridge, $tag_param) = @_;
487 die "bridge '$bridge' is not active\n" if ! -d
"/sys/class/net/$bridge";
489 return $bridge if !defined($tag_param); # no vlan, simply return
491 my $tag = int($tag_param);
493 die "got strange vlan tag '$tag_param'\n" if $tag < 1 || $tag > 4094;
495 my $bridgevlan = "${bridge}v$tag";
498 my $dir = "/sys/class/net/$bridge/brif";
499 PVE
::Tools
::dir_glob_foreach
($dir, '(((eth|bond)\d+|en[^.]+)(\.\d+)?)', sub {
503 die "no physical interface on bridge '$bridge'\n" if scalar(@ifaces) == 0;
506 # add bridgevlan if it doesn't already exist
507 if (! -d
"/sys/class/net/$bridgevlan") {
508 iface_create
($bridgevlan, 'bridge');
511 # for each physical interface (eth or bridge) bind them to bridge vlan
512 foreach my $iface (@ifaces) {
513 activate_bridge_vlan_slave
($bridgevlan, $iface, $tag);
516 #fixme: set other bridge flags
518 # remove ipv6 link-local address before activation
519 disable_ipv6
($bridgevlan);
520 # be sure to have the bridge up
521 &$activate_interface($bridgevlan);
527 my ($host, $port, $timeout) = @_;
531 $timeout = 3 if !$timeout; # sane default
533 # Net::Ping defaults to the echo port
536 # Net::Ping's port_number() implies service_check(1)
542 $result = PVE
::Tools
::run_with_timeout
($timeout, sub {
543 $sock = IO
::Socket
::IP-
>new(PeerHost
=> $host, PeerPort
=> $port, Type
=> SOCK_STREAM
);
544 $result = $refused if $! == ECONNREFUSED
;
555 my ($cidr, $version) = @_;
557 return if $cidr !~ m!^(\S+?)/(\S+)$!;
558 my ($ip, $prefix) = ($1, $2);
560 my $ipobj = Net
::IP-
>new($ip, $version);
563 $version = $ipobj->version();
565 my $binmask = Net
::IP
::ip_get_mask
($prefix, $version);
568 my $masked_binip = $ipobj->binip() & $binmask;
569 my $masked_ip = Net
::IP
::ip_bintoip
($masked_binip, $version);
570 return Net
::IP-
>new("$masked_ip/$prefix");
574 my ($ip, $cidr, $version) = @_;
576 my $cidr_obj = IP_from_cidr
($cidr, $version);
577 return undef if !$cidr_obj;
579 my $ip_obj = Net
::IP-
>new($ip, $version);
580 return undef if !$ip_obj;
582 return $cidr_obj->overlaps($ip_obj) == $Net::IP
::IP_B_IN_A_OVERLAP
;
586 sub get_local_ip_from_cidr
{
590 run_command
(['/sbin/ip', 'address', 'show', 'to', $cidr, 'up'], outfunc
=> sub {
591 if ($_[0] =~ m!^\s*inet(?:6)?\s+($PVE::Tools::IPRE)(?:/\d+|\s+peer\s+)!) {
601 my ($err, $host, $port) = Socket
::getnameinfo
($addr, NI_NUMERICHOST
| NI_NUMERICSERV
);
602 die "failed to get numerical host address: $err\n" if $err;
603 return ($host, $port) if wantarray;
607 sub get_ip_from_hostname
{
608 my ($hostname, $noerr) = @_;
610 my @res = eval { PVE
::Tools
::getaddrinfo_all
($hostname) };
612 die "hostname lookup '$hostname' failed - $@" if !$noerr;
618 $family = $ai->{family
};
619 my $tmpip = addr_to_ip
($ai->{addr
});
620 if ($tmpip !~ m/^127\.|^::1$/) {
625 if (!defined($ip) ) {
626 die "hostname lookup '$hostname' failed - got local IP address '$ip'\n" if !$noerr;
630 return wantarray ?
($ip, $family) : $ip;
634 my ($code, @param) = @_;
635 my $res = lock_file
('/var/lock/pve-network.lck', 10, $code, @param);