5 use PVE
::Tools
qw(run_command lock_file);
10 use Socket
qw(NI_NUMERICHOST NI_NUMERICSERV);
11 use POSIX
qw(ECONNREFUSED);
15 # host network related utility functions
17 our $ipv4_reverse_mask = [
53 our $ipv4_mask_hash_localnet = {
63 '255.255.128.0' => 17,
64 '255.255.192.0' => 18,
65 '255.255.224.0' => 19,
66 '255.255.240.0' => 20,
67 '255.255.248.0' => 21,
68 '255.255.252.0' => 22,
69 '255.255.254.0' => 23,
70 '255.255.255.0' => 24,
71 '255.255.255.128' => 25,
72 '255.255.255.192' => 26,
73 '255.255.255.224' => 27,
74 '255.255.255.240' => 28,
75 '255.255.255.248' => 29,
76 '255.255.255.252' => 30,
77 '255.255.255.254' => 31,
78 '255.255.255.255' => 32,
81 sub setup_tc_rate_limit
{
82 my ($iface, $rate, $burst, $debug) = @_;
84 # these are allowed / expected to fail, e.g. when there is no previous rate limit to remove
85 eval { run_command
("/sbin/tc class del dev $iface parent 1: classid 1:1 >/dev/null 2>&1"); };
86 eval { run_command
("/sbin/tc filter del dev $iface parent ffff: protocol all pref 50 u32 >/dev/null 2>&1"); };
87 eval { run_command
("/sbin/tc qdisc del dev $iface ingress >/dev/null 2>&1"); };
88 eval { run_command
("/sbin/tc qdisc del dev $iface root >/dev/null 2>&1"); };
92 # tbf does not work for unknown reason
93 #$TC qdisc add dev $DEV root tbf rate $RATE latency 100ms burst $BURST
94 # so we use htb instead
95 run_command
("/sbin/tc qdisc add dev $iface root handle 1: htb default 1");
96 run_command
("/sbin/tc class add dev $iface parent 1: classid 1:1 " .
97 "htb rate ${rate}bps burst ${burst}b");
99 run_command
("/sbin/tc qdisc add dev $iface handle ffff: ingress");
100 run_command
("/sbin/tc filter add dev $iface parent ffff: " .
102 "police rate ${rate}bps burst ${burst}b mtu 64kb " .
106 print "DEBUG tc settings\n";
107 system("/sbin/tc qdisc ls dev $iface");
108 system("/sbin/tc class ls dev $iface");
109 system("/sbin/tc filter ls dev $iface parent ffff:");
114 my ($iface, $rate) = @_;
117 $rate = int($rate*1024*1024) if $rate;
118 my $burst = 1024*1024;
120 setup_tc_rate_limit
($iface, $rate, $burst, $debug);
123 my $read_bridge_mtu = sub {
126 my $mtu = PVE
::Tools
::file_read_firstline
("/sys/class/net/$bridge/mtu");
127 die "bridge '$bridge' does not exist\n" if !$mtu;
128 # avoid insecure dependency;
129 die "unable to parse mtu value" if $mtu !~ /^(\d+)$/;
135 my $parse_tap_device_name = sub {
136 my ($iface, $noerr) = @_;
140 if ($iface =~ m/^tap(\d+)i(\d+)$/) {
143 } elsif ($iface =~ m/^veth(\d+)i(\d+)$/) {
147 return undef if $noerr;
148 die "can't create firewall bridge for random interface name '$iface'\n";
151 return ($vmid, $devid);
154 my $compute_fwbr_names = sub {
155 my ($vmid, $devid) = @_;
157 my $fwbr = "fwbr${vmid}i${devid}";
158 # Note: the firewall use 'fwln+' to filter traffic to VMs
159 my $vethfw = "fwln${vmid}i${devid}";
160 my $vethfwpeer = "fwpr${vmid}p${devid}";
161 my $ovsintport = "fwln${vmid}o${devid}";
163 return ($fwbr, $vethfw, $vethfwpeer, $ovsintport);
166 my $cond_create_bridge = sub {
169 if (! -d
"/sys/class/net/$bridge") {
170 system("/sbin/brctl addbr $bridge") == 0 ||
171 die "can't add bridge '$bridge'\n";
172 disable_ipv6
($bridge);
178 return if !-d
'/proc/sys/net/ipv6'; # ipv6 might be completely disabled
179 my $file = "/proc/sys/net/ipv6/conf/$iface/disable_ipv6";
180 open(my $fh, '>', $file) or die "failed to open $file for writing: $!\n";
181 print {$fh} "1\n" or die "failed to disable link-local ipv6 for $iface\n";
185 my $bridge_add_interface = sub {
186 my ($bridge, $iface, $tag, $trunks) = @_;
188 # drop link local address (it can't be used when on a bridge anyway)
189 disable_ipv6
($iface);
190 system("/sbin/brctl addif $bridge $iface") == 0 ||
191 die "can't add interface 'iface' to bridge '$bridge'\n";
193 my $vlan_aware = PVE
::Tools
::file_read_firstline
("/sys/class/net/$bridge/bridge/vlan_filtering");
197 system({'/sbin/bridge'} 'bridge', 'vlan', 'del', 'dev', $iface, 'vid', '1-4094') == 0
198 or die "failed to remove default vlan tags of $iface\n";
199 system({'/sbin/bridge'} 'bridge', 'vlan', 'add', 'dev', $iface, 'vid', $tag, 'pvid', 'untagged') == 0
200 or die "unable to add vlan $tag to interface $iface\n";
202 warn "Caution: Setting VLAN ID 1 on a VLAN aware bridge may be dangerous\n" if $tag == 1;
204 system("/sbin/bridge vlan add dev $iface vid 2-4094") == 0 ||
205 die "unable to add default vlan tags to interface $iface\n" if !$trunks;
209 my @trunks_array = split /;/, $trunks;
210 foreach my $trunk (@trunks_array) {
211 system("/sbin/bridge vlan add dev $iface vid $trunk") == 0 ||
212 die "unable to add vlan $trunk to interface $iface\n";
218 my $ovs_bridge_add_port = sub {
219 my ($bridge, $iface, $tag, $internal, $trunks) = @_;
221 $trunks =~ s/;/,/g if $trunks;
223 my $cmd = "/usr/bin/ovs-vsctl add-port $bridge $iface";
224 $cmd .= " tag=$tag" if $tag;
225 $cmd .= " trunks=". join(',', $trunks) if $trunks;
226 $cmd .= " vlan_mode=native-untagged" if $tag && $trunks;
228 $cmd .= " -- set Interface $iface type=internal" if $internal;
230 die "can't add ovs port '$iface'\n";
231 disable_ipv6
($iface);
234 my $activate_interface = sub {
237 system("/sbin/ip link set $iface up") == 0 ||
238 die "can't activate interface '$iface'\n";
242 my ($iface, $bridge) = @_;
244 die "unable to get bridge setting\n" if !$bridge;
246 my $bridgemtu = &$read_bridge_mtu($bridge);
249 disable_ipv6
($iface);
250 PVE
::Tools
::run_command
(['/sbin/ip', 'link', 'set', $iface, 'up', 'promisc', 'on', 'mtu', $bridgemtu]);
252 die "interface activation failed\n" if $@;
256 my ($veth, $vethpeer, $bridge, $mac) = @_;
258 die "unable to get bridge setting\n" if !$bridge;
260 my $bridgemtu = &$read_bridge_mtu($bridge);
263 if (! -d
"/sys/class/net/$veth") {
264 my $cmd = "/sbin/ip link add name $veth type veth peer name $vethpeer mtu $bridgemtu";
265 $cmd .= " addr $mac" if $mac;
266 system($cmd) == 0 || die "can't create interface $veth\n";
271 disable_ipv6
($vethpeer);
272 &$activate_interface($veth);
273 &$activate_interface($vethpeer);
279 if (-d
"/sys/class/net/$veth") {
280 run_command
("/sbin/ip link delete dev $veth", outfunc
=> sub {}, errfunc
=> sub {});
282 eval { tap_unplug
($veth) };
285 my $create_firewall_bridge_linux = sub {
286 my ($iface, $bridge, $tag, $trunks) = @_;
288 my ($vmid, $devid) = &$parse_tap_device_name($iface);
289 my ($fwbr, $vethfw, $vethfwpeer) = &$compute_fwbr_names($vmid, $devid);
291 &$cond_create_bridge($fwbr);
292 &$activate_interface($fwbr);
294 copy_bridge_config
($bridge, $fwbr);
295 veth_create
($vethfw, $vethfwpeer, $bridge);
297 &$bridge_add_interface($fwbr, $vethfw);
298 &$bridge_add_interface($bridge, $vethfwpeer, $tag, $trunks);
300 &$bridge_add_interface($fwbr, $iface);
303 my $create_firewall_bridge_ovs = sub {
304 my ($iface, $bridge, $tag, $trunks) = @_;
306 my ($vmid, $devid) = &$parse_tap_device_name($iface);
307 my ($fwbr, undef, undef, $ovsintport) = &$compute_fwbr_names($vmid, $devid);
309 my $bridgemtu = &$read_bridge_mtu($bridge);
311 &$cond_create_bridge($fwbr);
312 &$activate_interface($fwbr);
314 &$bridge_add_interface($fwbr, $iface);
316 &$ovs_bridge_add_port($bridge, $ovsintport, $tag, 1, $trunks);
317 &$activate_interface($ovsintport);
319 # set the same mtu for ovs int port
320 PVE
::Tools
::run_command
(['/sbin/ip', 'link', 'set', $ovsintport, 'mtu', $bridgemtu]);
322 &$bridge_add_interface($fwbr, $ovsintport);
325 my $cleanup_firewall_bridge = sub {
328 my ($vmid, $devid) = &$parse_tap_device_name($iface, 1);
329 return if !defined($vmid);
330 my ($fwbr, $vethfw, $vethfwpeer, $ovsintport) = &$compute_fwbr_names($vmid, $devid);
332 # cleanup old port config from any openvswitch bridge
333 if (-d
"/sys/class/net/$ovsintport") {
334 run_command
("/usr/bin/ovs-vsctl del-port $ovsintport", outfunc
=> sub {}, errfunc
=> sub {});
337 # delete old vethfw interface
338 veth_delete
($vethfw);
340 # cleanup fwbr bridge
341 if (-d
"/sys/class/net/$fwbr") {
342 run_command
("/sbin/ip link set dev $fwbr down", outfunc
=> sub {}, errfunc
=> sub {});
343 run_command
("/sbin/brctl delbr $fwbr", outfunc
=> sub {}, errfunc
=> sub {});
348 my ($iface, $bridge, $tag, $firewall, $trunks, $rate) = @_;
350 #cleanup old port config from any openvswitch bridge
351 eval {run_command
("/usr/bin/ovs-vsctl del-port $iface", outfunc
=> sub {}, errfunc
=> sub {}) };
353 if (-d
"/sys/class/net/$bridge/bridge") {
354 &$cleanup_firewall_bridge($iface); # remove stale devices
356 my $vlan_aware = PVE
::Tools
::file_read_firstline
("/sys/class/net/$bridge/bridge/vlan_filtering");
359 die "vlan aware feature need to be enabled to use trunks" if $trunks;
360 my $newbridge = activate_bridge_vlan
($bridge, $tag);
361 copy_bridge_config
($bridge, $newbridge) if $bridge ne $newbridge;
362 $bridge = $newbridge;
367 &$create_firewall_bridge_linux($iface, $bridge, $tag, $trunks);
369 &$bridge_add_interface($bridge, $iface, $tag, $trunks);
373 &$cleanup_firewall_bridge($iface); # remove stale devices
376 &$create_firewall_bridge_ovs($iface, $bridge, $tag, $trunks);
378 &$ovs_bridge_add_port($bridge, $iface, $tag, undef, $trunks);
382 tap_rate_limit
($iface, $rate);
388 my $path= "/sys/class/net/$iface/brport/bridge";
390 my $bridge = basename
(readlink($path));
391 #avoid insecure dependency;
392 ($bridge) = $bridge =~ /(\S+)/;
394 system("/sbin/brctl delif $bridge $iface") == 0 ||
395 die "can't del interface '$iface' from bridge '$bridge'\n";
399 &$cleanup_firewall_bridge($iface);
400 #cleanup old port config from any openvswitch bridge
401 eval {run_command
("/usr/bin/ovs-vsctl del-port $iface", outfunc
=> sub {}, errfunc
=> sub {}) };
404 sub copy_bridge_config
{
405 my ($br0, $br1) = @_;
407 return if $br0 eq $br1;
409 my $br_configs = [ 'ageing_time', 'stp_state', 'priority', 'forward_delay',
410 'hello_time', 'max_age', 'multicast_snooping', 'multicast_querier'];
412 foreach my $sysname (@$br_configs) {
414 my $v0 = PVE
::Tools
::file_read_firstline
("/sys/class/net/$br0/bridge/$sysname");
415 my $v1 = PVE
::Tools
::file_read_firstline
("/sys/class/net/$br1/bridge/$sysname");
417 PVE
::ProcFSTools
::write_proc_entry
("/sys/class/net/$br1/bridge/$sysname", $v0);
424 sub activate_bridge_vlan_slave
{
425 my ($bridgevlan, $iface, $tag) = @_;
426 my $ifacevlan = "${iface}.$tag";
428 # create vlan on $iface is not already exist
429 if (! -d
"/sys/class/net/$ifacevlan") {
430 system("/sbin/ip link add link $iface name $ifacevlan type vlan id $tag") == 0 ||
431 die "can't add vlan tag $tag to interface $iface\n";
433 # remove ipv6 link-local address before activation
434 disable_ipv6
($ifacevlan);
437 # be sure to have the $ifacevlan up
438 &$activate_interface($ifacevlan);
440 # test if $vlaniface is already enslaved in another bridge
441 my $path= "/sys/class/net/$ifacevlan/brport/bridge";
443 my $tbridge = basename
(readlink($path));
444 if ($tbridge ne $bridgevlan) {
445 die "interface $ifacevlan already exist in bridge $tbridge\n";
447 # Port already attached to bridge: do nothing.
452 # add $ifacevlan to the bridge
453 &$bridge_add_interface($bridgevlan, $ifacevlan);
456 sub activate_bridge_vlan
{
457 my ($bridge, $tag_param) = @_;
459 die "bridge '$bridge' is not active\n" if ! -d
"/sys/class/net/$bridge";
461 return $bridge if !defined($tag_param); # no vlan, simply return
463 my $tag = int($tag_param);
465 die "got strange vlan tag '$tag_param'\n" if $tag < 1 || $tag > 4094;
467 my $bridgevlan = "${bridge}v$tag";
470 my $dir = "/sys/class/net/$bridge/brif";
471 PVE
::Tools
::dir_glob_foreach
($dir, '(((eth|bond)\d+|en[^.]+)(\.\d+)?)', sub {
475 die "no physical interface on bridge '$bridge'\n" if scalar(@ifaces) == 0;
478 # add bridgevlan if it doesn't already exist
479 if (! -d
"/sys/class/net/$bridgevlan") {
480 system("/sbin/brctl addbr $bridgevlan") == 0 ||
481 die "can't add bridge $bridgevlan\n";
484 # for each physical interface (eth or bridge) bind them to bridge vlan
485 foreach my $iface (@ifaces) {
486 activate_bridge_vlan_slave
($bridgevlan, $iface, $tag);
489 #fixme: set other bridge flags
491 # remove ipv6 link-local address before activation
492 disable_ipv6
($bridgevlan);
493 # be sure to have the bridge up
494 &$activate_interface($bridgevlan);
500 my ($host, $port, $timeout) = @_;
504 $timeout = 3 if !$timeout; # sane default
506 # Net::Ping defaults to the echo port
509 # Net::Ping's port_number() implies service_check(1)
515 $result = PVE
::Tools
::run_with_timeout
($timeout, sub {
516 $sock = IO
::Socket
::IP-
>new(PeerHost
=> $host, PeerPort
=> $port, Type
=> SOCK_STREAM
);
517 $result = $refused if $! == ECONNREFUSED
;
528 my ($cidr, $version) = @_;
530 return if $cidr !~ m!^(\S+?)/(\S+)$!;
531 my ($ip, $prefix) = ($1, $2);
533 my $ipobj = Net
::IP-
>new($ip, $version);
536 $version = $ipobj->version();
538 my $binmask = Net
::IP
::ip_get_mask
($prefix, $version);
541 my $masked_binip = $ipobj->binip() & $binmask;
542 my $masked_ip = Net
::IP
::ip_bintoip
($masked_binip, $version);
543 return Net
::IP-
>new("$masked_ip/$prefix");
547 my ($ip, $cidr, $version) = @_;
549 my $cidr_obj = IP_from_cidr
($cidr, $version);
550 return undef if !$cidr_obj;
552 my $ip_obj = Net
::IP-
>new($ip, $version);
553 return undef if !$ip_obj;
555 return $cidr_obj->overlaps($ip_obj) == $Net::IP
::IP_B_IN_A_OVERLAP
;
559 sub get_local_ip_from_cidr
{
562 my $cmd = ['/sbin/ip', 'address', 'show', 'to', $cidr, 'up'];
569 if ($line =~ m!^\s*inet(?:6)?\s+($PVE::Tools::IPRE)/\d+!) {
574 PVE
::Tools
::run_command
($cmd, outfunc
=> $code);
581 my ($err, $host, $port) = Socket
::getnameinfo
($addr, NI_NUMERICHOST
| NI_NUMERICSERV
);
582 die "failed to get numerical host address: $err\n" if $err;
583 return ($host, $port) if wantarray;
587 sub get_ip_from_hostname
{
588 my ($hostname, $noerr) = @_;
593 my @res = PVE
::Tools
::getaddrinfo_all
($hostname);
594 $family = $res[0]->{family
};
595 $ip = addr_to_ip
($res[0]->{addr
})
598 die "hostname lookup failed:\n$@" if !$noerr;
602 if ($ip =~ m/^127\.|^::1$/) {
603 die "hostname lookup failed - got local IP address ($hostname = $ip)\n" if !$noerr;
607 return wantarray ?
($ip, $family) : $ip;
611 my ($code, @param) = @_;
612 my $res = lock_file
('/var/lock/pve-network.lck', 10, $code, @param);