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Commit | Line | Data |
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b9436cda DM |
1 | package PVE::Network; |
2 | ||
3 | use strict; | |
c36f332e | 4 | use warnings; |
74d1b045 | 5 | use PVE::Tools qw(run_command); |
b9436cda DM |
6 | use PVE::ProcFSTools; |
7 | use PVE::INotify; | |
8 | use File::Basename; | |
b6bff92e WB |
9 | use IO::Socket::IP; |
10 | use POSIX qw(ECONNREFUSED); | |
b9436cda | 11 | |
bf52d27b WB |
12 | use Net::IP; |
13 | ||
12a235d6 WB |
14 | use Socket qw(IPPROTO_IP); |
15 | ||
16 | use constant IFF_UP => 1; | |
17 | use constant IFNAMSIZ => 16; | |
f029c1d0 | 18 | use constant SIOCGIFFLAGS => 0x8913; |
12a235d6 | 19 | |
b9436cda DM |
20 | # host network related utility functions |
21 | ||
61aa94e4 WB |
22 | our $ipv4_reverse_mask = [ |
23 | '0.0.0.0', | |
24 | '128.0.0.0', | |
25 | '192.0.0.0', | |
26 | '224.0.0.0', | |
27 | '240.0.0.0', | |
28 | '248.0.0.0', | |
29 | '252.0.0.0', | |
30 | '254.0.0.0', | |
31 | '255.0.0.0', | |
32 | '255.128.0.0', | |
33 | '255.192.0.0', | |
34 | '255.224.0.0', | |
35 | '255.240.0.0', | |
36 | '255.248.0.0', | |
37 | '255.252.0.0', | |
38 | '255.254.0.0', | |
39 | '255.255.0.0', | |
40 | '255.255.128.0', | |
41 | '255.255.192.0', | |
42 | '255.255.224.0', | |
43 | '255.255.240.0', | |
44 | '255.255.248.0', | |
45 | '255.255.252.0', | |
46 | '255.255.254.0', | |
47 | '255.255.255.0', | |
48 | '255.255.255.128', | |
49 | '255.255.255.192', | |
50 | '255.255.255.224', | |
51 | '255.255.255.240', | |
52 | '255.255.255.248', | |
53 | '255.255.255.252', | |
54 | '255.255.255.254', | |
55 | '255.255.255.255', | |
56 | ]; | |
57 | ||
58 | our $ipv4_mask_hash_localnet = { | |
59 | '255.255.0.0' => 16, | |
60 | '255.255.128.0' => 17, | |
61 | '255.255.192.0' => 18, | |
62 | '255.255.224.0' => 19, | |
63 | '255.255.240.0' => 20, | |
64 | '255.255.248.0' => 21, | |
65 | '255.255.252.0' => 22, | |
66 | '255.255.254.0' => 23, | |
67 | '255.255.255.0' => 24, | |
68 | '255.255.255.128' => 25, | |
69 | '255.255.255.192' => 26, | |
70 | '255.255.255.224' => 27, | |
71 | '255.255.255.240' => 28, | |
72 | '255.255.255.248' => 29, | |
73 | '255.255.255.252' => 30, | |
74 | }; | |
75 | ||
74d1b045 DM |
76 | sub setup_tc_rate_limit { |
77 | my ($iface, $rate, $burst, $debug) = @_; | |
78 | ||
2d6b3a90 FG |
79 | # these are allowed / expected to fail, e.g. when there is no previous rate limit to remove |
80 | eval { run_command("/sbin/tc class del dev $iface parent 1: classid 1:1 >/dev/null 2>&1"); }; | |
81 | eval { run_command("/sbin/tc filter del dev $iface parent ffff: protocol all pref 50 u32 >/dev/null 2>&1"); }; | |
82 | eval { run_command("/sbin/tc qdisc del dev $iface ingress >/dev/null 2>&1"); }; | |
83 | eval { run_command("/sbin/tc qdisc del dev $iface root >/dev/null 2>&1"); }; | |
74d1b045 | 84 | |
d6f2623b | 85 | return if !$rate; |
957753df | 86 | |
74d1b045 DM |
87 | # tbf does not work for unknown reason |
88 | #$TC qdisc add dev $DEV root tbf rate $RATE latency 100ms burst $BURST | |
89 | # so we use htb instead | |
90 | run_command("/sbin/tc qdisc add dev $iface root handle 1: htb default 1"); | |
91 | run_command("/sbin/tc class add dev $iface parent 1: classid 1:1 " . | |
92 | "htb rate ${rate}bps burst ${burst}b"); | |
93 | ||
5d35df41 W |
94 | run_command("/sbin/tc qdisc add dev $iface handle ffff: ingress"); |
95 | run_command("/sbin/tc filter add dev $iface parent ffff: " . | |
1b915170 | 96 | "prio 50 basic " . |
5d35df41 W |
97 | "police rate ${rate}bps burst ${burst}b mtu 64kb " . |
98 | "drop flowid :1"); | |
99 | ||
74d1b045 DM |
100 | if ($debug) { |
101 | print "DEBUG tc settings\n"; | |
102 | system("/sbin/tc qdisc ls dev $iface"); | |
103 | system("/sbin/tc class ls dev $iface"); | |
104 | system("/sbin/tc filter ls dev $iface parent ffff:"); | |
105 | } | |
106 | } | |
107 | ||
ec9ada18 AD |
108 | sub tap_rate_limit { |
109 | my ($iface, $rate) = @_; | |
110 | ||
111 | my $debug = 0; | |
ad066ae2 | 112 | $rate = int($rate*1024*1024) if $rate; |
ec9ada18 AD |
113 | my $burst = 1024*1024; |
114 | ||
115 | setup_tc_rate_limit($iface, $rate, $burst, $debug); | |
116 | } | |
74d1b045 | 117 | |
605bb891 DM |
118 | my $read_bridge_mtu = sub { |
119 | my ($bridge) = @_; | |
120 | ||
121 | my $mtu = PVE::Tools::file_read_firstline("/sys/class/net/$bridge/mtu"); | |
122 | die "bridge '$bridge' does not exist\n" if !$mtu; | |
123 | # avoid insecure dependency; | |
124 | die "unable to parse mtu value" if $mtu !~ /^(\d+)$/; | |
125 | $mtu = int($1); | |
126 | ||
127 | return $mtu; | |
128 | }; | |
129 | ||
32cb7d27 | 130 | my $parse_tap_device_name = sub { |
6c80e6d6 | 131 | my ($iface, $noerr) = @_; |
605bb891 DM |
132 | |
133 | my ($vmid, $devid); | |
134 | ||
135 | if ($iface =~ m/^tap(\d+)i(\d+)$/) { | |
136 | $vmid = $1; | |
137 | $devid = $2; | |
32cb7d27 | 138 | } elsif ($iface =~ m/^veth(\d+)i(\d+)$/) { |
605bb891 DM |
139 | $vmid = $1; |
140 | $devid = $2; | |
141 | } else { | |
6c80e6d6 DM |
142 | return undef if $noerr; |
143 | die "can't create firewall bridge for random interface name '$iface'\n"; | |
605bb891 DM |
144 | } |
145 | ||
146 | return ($vmid, $devid); | |
147 | }; | |
148 | ||
70ab4434 | 149 | my $compute_fwbr_names = sub { |
605bb891 DM |
150 | my ($vmid, $devid) = @_; |
151 | ||
152 | my $fwbr = "fwbr${vmid}i${devid}"; | |
f193aa74 | 153 | # Note: the firewall use 'fwln+' to filter traffic to VMs |
7d78a966 AD |
154 | my $vethfw = "fwln${vmid}i${devid}"; |
155 | my $vethfwpeer = "fwpr${vmid}p${devid}"; | |
156 | my $ovsintport = "fwln${vmid}o${devid}"; | |
605bb891 | 157 | |
70ab4434 | 158 | return ($fwbr, $vethfw, $vethfwpeer, $ovsintport); |
605bb891 DM |
159 | }; |
160 | ||
161 | my $cond_create_bridge = sub { | |
162 | my ($bridge) = @_; | |
163 | ||
164 | if (! -d "/sys/class/net/$bridge") { | |
165 | system("/sbin/brctl addbr $bridge") == 0 || | |
166 | die "can't add bridge '$bridge'\n"; | |
167 | } | |
168 | }; | |
169 | ||
170 | my $bridge_add_interface = sub { | |
b0b34ffd | 171 | my ($bridge, $iface, $tag, $trunks) = @_; |
605bb891 DM |
172 | |
173 | system("/sbin/brctl addif $bridge $iface") == 0 || | |
174 | die "can't add interface 'iface' to bridge '$bridge'\n"; | |
4d25f4aa AD |
175 | |
176 | my $vlan_aware = PVE::Tools::file_read_firstline("/sys/class/net/$bridge/bridge/vlan_filtering"); | |
177 | ||
178 | if ($vlan_aware) { | |
179 | if ($tag) { | |
180 | system("/sbin/bridge vlan add dev $iface vid $tag pvid untagged") == 0 || | |
181 | die "unable to add vlan $tag to interface $iface\n"; | |
5d662b31 DC |
182 | |
183 | warn "Caution: Setting VLAN ID 1 on a VLAN aware bridge may be dangerous\n" if $tag == 1; | |
4d25f4aa AD |
184 | } else { |
185 | system("/sbin/bridge vlan add dev $iface vid 2-4094") == 0 || | |
b0b34ffd | 186 | die "unable to add default vlan tags to interface $iface\n" if !$trunks; |
4d25f4aa | 187 | } |
b0b34ffd | 188 | |
846337ad WB |
189 | if ($trunks) { |
190 | my @trunks_array = split /;/, $trunks; | |
191 | foreach my $trunk (@trunks_array) { | |
192 | system("/sbin/bridge vlan add dev $iface vid $trunk") == 0 || | |
193 | die "unable to add vlan $trunk to interface $iface\n"; | |
194 | } | |
b0b34ffd | 195 | } |
4d25f4aa | 196 | } |
605bb891 DM |
197 | }; |
198 | ||
70ab4434 | 199 | my $ovs_bridge_add_port = sub { |
b0b34ffd AD |
200 | my ($bridge, $iface, $tag, $internal, $trunks) = @_; |
201 | ||
202 | $trunks =~ s/;/,/g if $trunks; | |
70ab4434 DM |
203 | |
204 | my $cmd = "/usr/bin/ovs-vsctl add-port $bridge $iface"; | |
205 | $cmd .= " tag=$tag" if $tag; | |
b0b34ffd AD |
206 | $cmd .= " trunks=". join(',', $trunks) if $trunks; |
207 | $cmd .= " vlan_mode=native-untagged" if $tag && $trunks; | |
208 | ||
70ab4434 DM |
209 | $cmd .= " -- set Interface $iface type=internal" if $internal; |
210 | system($cmd) == 0 || | |
211 | die "can't add ovs port '$iface'\n"; | |
212 | }; | |
213 | ||
605bb891 DM |
214 | my $activate_interface = sub { |
215 | my ($iface) = @_; | |
216 | ||
217 | system("/sbin/ip link set $iface up") == 0 || | |
218 | die "can't activate interface '$iface'\n"; | |
219 | }; | |
220 | ||
3aa99c70 AD |
221 | sub tap_create { |
222 | my ($iface, $bridge) = @_; | |
223 | ||
224 | die "unable to get bridge setting\n" if !$bridge; | |
225 | ||
605bb891 | 226 | my $bridgemtu = &$read_bridge_mtu($bridge); |
3aa99c70 | 227 | |
098795e0 DM |
228 | eval { |
229 | PVE::Tools::run_command("/sbin/ifconfig $iface 0.0.0.0 promisc up mtu $bridgemtu"); | |
230 | }; | |
231 | die "interface activation failed\n" if $@; | |
3aa99c70 AD |
232 | } |
233 | ||
35efc4eb AD |
234 | sub veth_create { |
235 | my ($veth, $vethpeer, $bridge, $mac) = @_; | |
236 | ||
237 | die "unable to get bridge setting\n" if !$bridge; | |
238 | ||
239 | my $bridgemtu = &$read_bridge_mtu($bridge); | |
240 | ||
241 | # create veth pair | |
242 | if (! -d "/sys/class/net/$veth") { | |
243 | my $cmd = "/sbin/ip link add name $veth type veth peer name $vethpeer mtu $bridgemtu"; | |
244 | $cmd .= " addr $mac" if $mac; | |
245 | system($cmd) == 0 || die "can't create interface $veth\n"; | |
246 | } | |
247 | ||
248 | # up vethpair | |
249 | &$activate_interface($veth); | |
250 | &$activate_interface($vethpeer); | |
251 | } | |
252 | ||
f3f0bc3a AD |
253 | sub veth_delete { |
254 | my ($veth) = @_; | |
255 | ||
256 | if (-d "/sys/class/net/$veth") { | |
257 | run_command("/sbin/ip link delete dev $veth", outfunc => sub {}, errfunc => sub {}); | |
258 | } | |
259 | ||
260 | } | |
35efc4eb | 261 | |
605bb891 | 262 | my $create_firewall_bridge_linux = sub { |
b0b34ffd | 263 | my ($iface, $bridge, $tag, $trunks) = @_; |
605bb891 | 264 | |
32cb7d27 | 265 | my ($vmid, $devid) = &$parse_tap_device_name($iface); |
70ab4434 | 266 | my ($fwbr, $vethfw, $vethfwpeer) = &$compute_fwbr_names($vmid, $devid); |
605bb891 | 267 | |
605bb891 DM |
268 | &$cond_create_bridge($fwbr); |
269 | &$activate_interface($fwbr); | |
270 | ||
271 | copy_bridge_config($bridge, $fwbr); | |
35efc4eb | 272 | veth_create($vethfw, $vethfwpeer, $bridge); |
605bb891 | 273 | |
7d78a966 | 274 | &$bridge_add_interface($fwbr, $vethfw); |
b0b34ffd | 275 | &$bridge_add_interface($bridge, $vethfwpeer, $tag, $trunks); |
605bb891 | 276 | |
4d25f4aa | 277 | &$bridge_add_interface($fwbr, $iface); |
605bb891 DM |
278 | }; |
279 | ||
70ab4434 | 280 | my $create_firewall_bridge_ovs = sub { |
b0b34ffd | 281 | my ($iface, $bridge, $tag, $trunks) = @_; |
70ab4434 | 282 | |
32cb7d27 | 283 | my ($vmid, $devid) = &$parse_tap_device_name($iface); |
70ab4434 DM |
284 | my ($fwbr, undef, undef, $ovsintport) = &$compute_fwbr_names($vmid, $devid); |
285 | ||
286 | my $bridgemtu = &$read_bridge_mtu($bridge); | |
287 | ||
288 | &$cond_create_bridge($fwbr); | |
289 | &$activate_interface($fwbr); | |
290 | ||
291 | &$bridge_add_interface($fwbr, $iface); | |
292 | ||
b0b34ffd | 293 | &$ovs_bridge_add_port($bridge, $ovsintport, $tag, 1, $trunks); |
ac3a04b8 | 294 | &$activate_interface($ovsintport); |
70ab4434 DM |
295 | |
296 | # set the same mtu for ovs int port | |
297 | PVE::Tools::run_command("/sbin/ifconfig $ovsintport mtu $bridgemtu"); | |
298 | ||
299 | &$bridge_add_interface($fwbr, $ovsintport); | |
300 | }; | |
301 | ||
302 | my $cleanup_firewall_bridge = sub { | |
605bb891 DM |
303 | my ($iface) = @_; |
304 | ||
32cb7d27 | 305 | my ($vmid, $devid) = &$parse_tap_device_name($iface, 1); |
6c80e6d6 | 306 | return if !defined($vmid); |
70ab4434 DM |
307 | my ($fwbr, $vethfw, $vethfwpeer, $ovsintport) = &$compute_fwbr_names($vmid, $devid); |
308 | ||
309 | # cleanup old port config from any openvswitch bridge | |
310 | if (-d "/sys/class/net/$ovsintport") { | |
311 | run_command("/usr/bin/ovs-vsctl del-port $ovsintport", outfunc => sub {}, errfunc => sub {}); | |
312 | } | |
605bb891 DM |
313 | |
314 | # delete old vethfw interface | |
f3f0bc3a | 315 | veth_delete($vethfw); |
605bb891 DM |
316 | |
317 | # cleanup fwbr bridge | |
318 | if (-d "/sys/class/net/$fwbr") { | |
319 | run_command("/sbin/ip link set dev $fwbr down", outfunc => sub {}, errfunc => sub {}); | |
320 | run_command("/sbin/brctl delbr $fwbr", outfunc => sub {}, errfunc => sub {}); | |
321 | } | |
322 | }; | |
323 | ||
f0c190ee | 324 | sub tap_plug { |
bce2a5b3 | 325 | my ($iface, $bridge, $tag, $firewall, $trunks, $rate) = @_; |
f0c190ee | 326 | |
4cbabd40 AD |
327 | #cleanup old port config from any openvswitch bridge |
328 | eval {run_command("/usr/bin/ovs-vsctl del-port $iface", outfunc => sub {}, errfunc => sub {}) }; | |
329 | ||
098795e0 | 330 | if (-d "/sys/class/net/$bridge/bridge") { |
70ab4434 | 331 | &$cleanup_firewall_bridge($iface); # remove stale devices |
605bb891 | 332 | |
4d25f4aa | 333 | my $vlan_aware = PVE::Tools::file_read_firstline("/sys/class/net/$bridge/bridge/vlan_filtering"); |
098795e0 | 334 | |
4d25f4aa | 335 | if (!$vlan_aware) { |
b0b34ffd | 336 | die "vlan aware feature need to be enabled to use trunks" if $trunks; |
4d25f4aa AD |
337 | my $newbridge = activate_bridge_vlan($bridge, $tag); |
338 | copy_bridge_config($bridge, $newbridge) if $bridge ne $newbridge; | |
ff042056 | 339 | $bridge = $newbridge; |
4d25f4aa AD |
340 | $tag = undef; |
341 | } | |
342 | ||
343 | if ($firewall) { | |
b0b34ffd | 344 | &$create_firewall_bridge_linux($iface, $bridge, $tag, $trunks); |
4d25f4aa | 345 | } else { |
b0b34ffd | 346 | &$bridge_add_interface($bridge, $iface, $tag, $trunks); |
4d25f4aa | 347 | } |
605bb891 | 348 | |
098795e0 | 349 | } else { |
70ab4434 DM |
350 | &$cleanup_firewall_bridge($iface); # remove stale devices |
351 | ||
352 | if ($firewall) { | |
b0b34ffd | 353 | &$create_firewall_bridge_ovs($iface, $bridge, $tag, $trunks); |
70ab4434 | 354 | } else { |
b0b34ffd | 355 | &$ovs_bridge_add_port($bridge, $iface, $tag, undef, $trunks); |
70ab4434 | 356 | } |
4cbabd40 | 357 | } |
bce2a5b3 WB |
358 | |
359 | tap_rate_limit($iface, $rate); | |
f0c190ee AD |
360 | } |
361 | ||
a84b65c0 | 362 | sub tap_unplug { |
2db1cc0d | 363 | my ($iface) = @_; |
a84b65c0 | 364 | |
2db1cc0d DM |
365 | my $path= "/sys/class/net/$iface/brport/bridge"; |
366 | if (-l $path) { | |
367 | my $bridge = basename(readlink($path)); | |
368 | #avoid insecure dependency; | |
369 | ($bridge) = $bridge =~ /(\S+)/; | |
4cbabd40 | 370 | |
098795e0 | 371 | system("/sbin/brctl delif $bridge $iface") == 0 || |
2db1cc0d | 372 | die "can't del interface '$iface' from bridge '$bridge'\n"; |
605bb891 | 373 | |
4cbabd40 | 374 | } |
70ab4434 DM |
375 | |
376 | &$cleanup_firewall_bridge($iface); | |
dd44486e WB |
377 | #cleanup old port config from any openvswitch bridge |
378 | eval {run_command("/usr/bin/ovs-vsctl del-port $iface", outfunc => sub {}, errfunc => sub {}) }; | |
a84b65c0 AD |
379 | } |
380 | ||
b9436cda DM |
381 | sub copy_bridge_config { |
382 | my ($br0, $br1) = @_; | |
383 | ||
384 | return if $br0 eq $br1; | |
385 | ||
386 | my $br_configs = [ 'ageing_time', 'stp_state', 'priority', 'forward_delay', | |
ba4af65b | 387 | 'hello_time', 'max_age', 'multicast_snooping', 'multicast_querier']; |
b9436cda DM |
388 | |
389 | foreach my $sysname (@$br_configs) { | |
390 | eval { | |
391 | my $v0 = PVE::Tools::file_read_firstline("/sys/class/net/$br0/bridge/$sysname"); | |
392 | my $v1 = PVE::Tools::file_read_firstline("/sys/class/net/$br1/bridge/$sysname"); | |
393 | if ($v0 ne $v1) { | |
aec04803 | 394 | PVE::ProcFSTools::write_proc_entry("/sys/class/net/$br1/bridge/$sysname", $v0); |
b9436cda DM |
395 | } |
396 | }; | |
397 | warn $@ if $@; | |
398 | } | |
399 | } | |
400 | ||
70d89745 PRG |
401 | sub activate_bridge_vlan_slave { |
402 | my ($bridgevlan, $iface, $tag) = @_; | |
b9436cda | 403 | my $ifacevlan = "${iface}.$tag"; |
70d89745 | 404 | |
b9436cda DM |
405 | # create vlan on $iface is not already exist |
406 | if (! -d "/sys/class/net/$ifacevlan") { | |
6fc54cb2 | 407 | system("/sbin/ip link add link $iface name ${iface}.${tag} type vlan id $tag") == 0 || |
02c9a6b4 | 408 | die "can't add vlan tag $tag to interface $iface\n"; |
b9436cda DM |
409 | } |
410 | ||
411 | # be sure to have the $ifacevlan up | |
605bb891 | 412 | &$activate_interface($ifacevlan); |
b9436cda DM |
413 | |
414 | # test if $vlaniface is already enslaved in another bridge | |
415 | my $path= "/sys/class/net/$ifacevlan/brport/bridge"; | |
416 | if (-l $path) { | |
417 | my $tbridge = basename(readlink($path)); | |
70d89745 | 418 | if ($tbridge ne $bridgevlan) { |
b9436cda | 419 | die "interface $ifacevlan already exist in bridge $tbridge\n"; |
eee4b32a PRG |
420 | } else { |
421 | # Port already attached to bridge: do nothing. | |
422 | return; | |
b9436cda DM |
423 | } |
424 | } | |
425 | ||
70d89745 | 426 | # add $ifacevlan to the bridge |
605bb891 | 427 | &$bridge_add_interface($bridgevlan, $ifacevlan); |
70d89745 PRG |
428 | } |
429 | ||
430 | sub activate_bridge_vlan { | |
431 | my ($bridge, $tag_param) = @_; | |
432 | ||
433 | die "bridge '$bridge' is not active\n" if ! -d "/sys/class/net/$bridge"; | |
434 | ||
435 | return $bridge if !defined($tag_param); # no vlan, simply return | |
436 | ||
437 | my $tag = int($tag_param); | |
438 | ||
439 | die "got strange vlan tag '$tag_param'\n" if $tag < 1 || $tag > 4094; | |
440 | ||
441 | my $bridgevlan = "${bridge}v$tag"; | |
442 | ||
c9030d97 PRG |
443 | my @ifaces = (); |
444 | my $dir = "/sys/class/net/$bridge/brif"; | |
899f8c4a | 445 | PVE::Tools::dir_glob_foreach($dir, '(((eth|bond)\d+|en[^.]+)(\.\d+)?)', sub { |
5ffa7628 | 446 | push @ifaces, $_[0]; |
c9030d97 PRG |
447 | }); |
448 | ||
5ffa7628 | 449 | die "no physical interface on bridge '$bridge'\n" if scalar(@ifaces) == 0; |
c9030d97 | 450 | |
b9436cda DM |
451 | # add bridgevlan if it doesn't already exist |
452 | if (! -d "/sys/class/net/$bridgevlan") { | |
9e14b1b7 | 453 | system("/sbin/brctl addbr $bridgevlan") == 0 || |
b9436cda DM |
454 | die "can't add bridge $bridgevlan\n"; |
455 | } | |
456 | ||
70d89745 | 457 | # for each physical interface (eth or bridge) bind them to bridge vlan |
c9030d97 PRG |
458 | foreach my $iface (@ifaces) { |
459 | activate_bridge_vlan_slave($bridgevlan, $iface, $tag); | |
460 | } | |
70d89745 | 461 | |
b9436cda DM |
462 | #fixme: set other bridge flags |
463 | ||
464 | # be sure to have the bridge up | |
465 | system("/sbin/ip link set $bridgevlan up") == 0 || | |
466 | die "can't up bridge $bridgevlan\n"; | |
70d89745 | 467 | |
b9436cda DM |
468 | return $bridgevlan; |
469 | } | |
470 | ||
b6bff92e WB |
471 | sub tcp_ping { |
472 | my ($host, $port, $timeout) = @_; | |
473 | ||
474 | my $refused = 1; | |
475 | ||
476 | $timeout = 3 if !$timeout; # sane default | |
477 | if (!$port) { | |
478 | # Net::Ping defaults to the echo port | |
479 | $port = 7; | |
480 | } else { | |
481 | # Net::Ping's port_number() implies service_check(1) | |
482 | $refused = 0; | |
483 | } | |
484 | ||
485 | my ($sock, $result); | |
486 | eval { | |
487 | $result = PVE::Tools::run_with_timeout($timeout, sub { | |
488 | $sock = IO::Socket::IP->new(PeerHost => $host, PeerPort => $port, Type => SOCK_STREAM); | |
489 | $result = $refused if $! == ECONNREFUSED; | |
490 | }); | |
491 | }; | |
492 | if ($sock) { | |
493 | $sock->close(); | |
494 | $result = 1; | |
495 | } | |
496 | return $result; | |
497 | } | |
498 | ||
bf52d27b WB |
499 | sub IP_from_cidr { |
500 | my ($cidr, $version) = @_; | |
501 | ||
502 | return if $cidr !~ m!^(\S+?)/(\S+)$!; | |
503 | my ($ip, $prefix) = ($1, $2); | |
504 | ||
505 | my $ipobj = Net::IP->new($ip, $version); | |
506 | return if !$ipobj; | |
507 | ||
508 | $version = $ipobj->version(); | |
509 | ||
510 | my $binmask = Net::IP::ip_get_mask($prefix, $version); | |
511 | return if !$binmask; | |
512 | ||
513 | my $masked_binip = $ipobj->binip() & $binmask; | |
514 | my $masked_ip = Net::IP::ip_bintoip($masked_binip, $version); | |
515 | return Net::IP->new("$masked_ip/$prefix"); | |
516 | } | |
517 | ||
518 | sub is_ip_in_cidr { | |
519 | my ($ip, $cidr, $version) = @_; | |
520 | ||
521 | my $cidr_obj = IP_from_cidr($cidr, $version); | |
522 | return undef if !$cidr_obj; | |
523 | ||
524 | my $ip_obj = Net::IP->new($ip, $version); | |
525 | return undef if !$ip_obj; | |
526 | ||
527 | return $cidr_obj->overlaps($ip_obj) == $Net::IP::IP_B_IN_A_OVERLAP; | |
528 | } | |
529 | ||
12a235d6 WB |
530 | # struct ifreq { // FOR SIOCGIFFLAGS: |
531 | # char ifrn_name[IFNAMSIZ] | |
532 | # short ifru_flags | |
533 | # }; | |
534 | my $STRUCT_IFREQ_SIOCGIFFLAGS = 'Z' . IFNAMSIZ . 's1'; | |
535 | sub get_active_interfaces { | |
536 | # Use the interface name list from /proc/net/dev | |
537 | open my $fh, '<', '/proc/net/dev' | |
538 | or die "failed to open /proc/net/dev: $!\n"; | |
539 | # And filter by IFF_UP flag fetched via a PF_INET6 socket ioctl: | |
ab08ec79 WB |
540 | my $sock; |
541 | socket($sock, PF_INET6, SOCK_DGRAM, &IPPROTO_IP) | |
542 | or socket($sock, PF_INET, SOCK_DGRAM, &IPPROTO_IP) | |
543 | or return []; | |
12a235d6 WB |
544 | |
545 | my $ifaces = []; | |
546 | while(defined(my $line = <$fh>)) { | |
547 | next if $line !~ /^\s*([^:\s]+):/; | |
548 | my $ifname = $1; | |
c4534006 | 549 | my $ifreq = pack($STRUCT_IFREQ_SIOCGIFFLAGS, $ifname, 0); |
f029c1d0 | 550 | if (!defined(ioctl($sock, SIOCGIFFLAGS, $ifreq))) { |
12a235d6 WB |
551 | warn "failed to get interface flags for: $ifname\n"; |
552 | next; | |
553 | } | |
554 | my ($name, $flags) = unpack($STRUCT_IFREQ_SIOCGIFFLAGS, $ifreq); | |
c4534006 | 555 | push @$ifaces, $ifname if ($flags & IFF_UP); |
12a235d6 WB |
556 | } |
557 | close $fh; | |
558 | close $sock; | |
559 | return $ifaces; | |
560 | } | |
561 | ||
b9436cda | 562 | 1; |