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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; | |
9 | ||
10 | # host network related utility functions | |
11 | ||
74d1b045 DM |
12 | sub setup_tc_rate_limit { |
13 | my ($iface, $rate, $burst, $debug) = @_; | |
14 | ||
957753df AD |
15 | system("/sbin/tc class del dev $iface parent 1: classid 1:1 >/dev/null 2>&1"); |
16 | system("/sbin/tc filter del dev $iface parent ffff: protocol ip prio 50 estimator 1sec 8sec >/dev/null 2>&1"); | |
edde1d46 | 17 | system("/sbin/tc qdisc del dev $iface ingress >/dev/null 2>&1"); |
74d1b045 DM |
18 | system("/sbin/tc qdisc del dev $iface root >/dev/null 2>&1"); |
19 | ||
d6f2623b | 20 | return if !$rate; |
957753df | 21 | |
74d1b045 DM |
22 | run_command("/sbin/tc qdisc add dev $iface handle ffff: ingress"); |
23 | ||
0aaf0ca4 DM |
24 | # this does not work wit virtio - don't know why (setting "mtu 64kb" does not help) |
25 | #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"); | |
26 | # so we use avrate instead | |
ca402c95 | 27 | run_command("/sbin/tc filter add dev $iface parent ffff: " . |
0aaf0ca4 DM |
28 | "protocol ip prio 50 estimator 1sec 8sec " . |
29 | "u32 match ip src 0.0.0.0/0 police avrate ${rate}bps drop flowid :1"); | |
74d1b045 DM |
30 | |
31 | # tbf does not work for unknown reason | |
32 | #$TC qdisc add dev $DEV root tbf rate $RATE latency 100ms burst $BURST | |
33 | # so we use htb instead | |
34 | run_command("/sbin/tc qdisc add dev $iface root handle 1: htb default 1"); | |
35 | run_command("/sbin/tc class add dev $iface parent 1: classid 1:1 " . | |
36 | "htb rate ${rate}bps burst ${burst}b"); | |
37 | ||
38 | if ($debug) { | |
39 | print "DEBUG tc settings\n"; | |
40 | system("/sbin/tc qdisc ls dev $iface"); | |
41 | system("/sbin/tc class ls dev $iface"); | |
42 | system("/sbin/tc filter ls dev $iface parent ffff:"); | |
43 | } | |
44 | } | |
45 | ||
ec9ada18 AD |
46 | sub tap_rate_limit { |
47 | my ($iface, $rate) = @_; | |
48 | ||
49 | my $debug = 0; | |
50 | $rate = int($rate*1024*1024); | |
51 | my $burst = 1024*1024; | |
52 | ||
53 | setup_tc_rate_limit($iface, $rate, $burst, $debug); | |
54 | } | |
74d1b045 | 55 | |
605bb891 DM |
56 | my $read_bridge_mtu = sub { |
57 | my ($bridge) = @_; | |
58 | ||
59 | my $mtu = PVE::Tools::file_read_firstline("/sys/class/net/$bridge/mtu"); | |
60 | die "bridge '$bridge' does not exist\n" if !$mtu; | |
61 | # avoid insecure dependency; | |
62 | die "unable to parse mtu value" if $mtu !~ /^(\d+)$/; | |
63 | $mtu = int($1); | |
64 | ||
65 | return $mtu; | |
66 | }; | |
67 | ||
68 | my $parse_tap_devive_name = sub { | |
6c80e6d6 | 69 | my ($iface, $noerr) = @_; |
605bb891 DM |
70 | |
71 | my ($vmid, $devid); | |
72 | ||
73 | if ($iface =~ m/^tap(\d+)i(\d+)$/) { | |
74 | $vmid = $1; | |
75 | $devid = $2; | |
76 | } elsif ($iface =~ m/^veth(\d+)\.(\d+)$/) { | |
77 | $vmid = $1; | |
78 | $devid = $2; | |
79 | } else { | |
6c80e6d6 DM |
80 | return undef if $noerr; |
81 | die "can't create firewall bridge for random interface name '$iface'\n"; | |
605bb891 DM |
82 | } |
83 | ||
84 | return ($vmid, $devid); | |
85 | }; | |
86 | ||
70ab4434 | 87 | my $compute_fwbr_names = sub { |
605bb891 DM |
88 | my ($vmid, $devid) = @_; |
89 | ||
90 | my $fwbr = "fwbr${vmid}i${devid}"; | |
f193aa74 | 91 | # Note: the firewall use 'fwln+' to filter traffic to VMs |
7d78a966 AD |
92 | my $vethfw = "fwln${vmid}i${devid}"; |
93 | my $vethfwpeer = "fwpr${vmid}p${devid}"; | |
94 | my $ovsintport = "fwln${vmid}o${devid}"; | |
605bb891 | 95 | |
70ab4434 | 96 | return ($fwbr, $vethfw, $vethfwpeer, $ovsintport); |
605bb891 DM |
97 | }; |
98 | ||
99 | my $cond_create_bridge = sub { | |
100 | my ($bridge) = @_; | |
101 | ||
102 | if (! -d "/sys/class/net/$bridge") { | |
103 | system("/sbin/brctl addbr $bridge") == 0 || | |
104 | die "can't add bridge '$bridge'\n"; | |
105 | } | |
106 | }; | |
107 | ||
108 | my $bridge_add_interface = sub { | |
109 | my ($bridge, $iface) = @_; | |
110 | ||
111 | system("/sbin/brctl addif $bridge $iface") == 0 || | |
112 | die "can't add interface 'iface' to bridge '$bridge'\n"; | |
113 | }; | |
114 | ||
70ab4434 DM |
115 | my $ovs_bridge_add_port = sub { |
116 | my ($bridge, $iface, $tag, $internal) = @_; | |
117 | ||
118 | my $cmd = "/usr/bin/ovs-vsctl add-port $bridge $iface"; | |
119 | $cmd .= " tag=$tag" if $tag; | |
120 | $cmd .= " -- set Interface $iface type=internal" if $internal; | |
121 | system($cmd) == 0 || | |
122 | die "can't add ovs port '$iface'\n"; | |
123 | }; | |
124 | ||
605bb891 DM |
125 | my $activate_interface = sub { |
126 | my ($iface) = @_; | |
127 | ||
128 | system("/sbin/ip link set $iface up") == 0 || | |
129 | die "can't activate interface '$iface'\n"; | |
130 | }; | |
131 | ||
3aa99c70 AD |
132 | sub tap_create { |
133 | my ($iface, $bridge) = @_; | |
134 | ||
135 | die "unable to get bridge setting\n" if !$bridge; | |
136 | ||
605bb891 | 137 | my $bridgemtu = &$read_bridge_mtu($bridge); |
3aa99c70 | 138 | |
098795e0 DM |
139 | eval { |
140 | PVE::Tools::run_command("/sbin/ifconfig $iface 0.0.0.0 promisc up mtu $bridgemtu"); | |
141 | }; | |
142 | die "interface activation failed\n" if $@; | |
3aa99c70 AD |
143 | } |
144 | ||
605bb891 DM |
145 | my $create_firewall_bridge_linux = sub { |
146 | my ($iface, $bridge) = @_; | |
147 | ||
148 | my ($vmid, $devid) = &$parse_tap_devive_name($iface); | |
70ab4434 | 149 | my ($fwbr, $vethfw, $vethfwpeer) = &$compute_fwbr_names($vmid, $devid); |
605bb891 DM |
150 | |
151 | my $bridgemtu = &$read_bridge_mtu($bridge); | |
152 | ||
153 | &$cond_create_bridge($fwbr); | |
154 | &$activate_interface($fwbr); | |
155 | ||
156 | copy_bridge_config($bridge, $fwbr); | |
157 | # create veth pair | |
158 | if (! -d "/sys/class/net/$vethfw") { | |
159 | system("/sbin/ip link add name $vethfw type veth peer name $vethfwpeer mtu $bridgemtu") == 0 || | |
160 | die "can't create interface $vethfw\n"; | |
161 | } | |
162 | ||
163 | # up vethpair | |
164 | &$activate_interface($vethfw); | |
165 | &$activate_interface($vethfwpeer); | |
166 | ||
7d78a966 AD |
167 | &$bridge_add_interface($fwbr, $vethfw); |
168 | &$bridge_add_interface($bridge, $vethfwpeer); | |
605bb891 DM |
169 | |
170 | return $fwbr; | |
171 | }; | |
172 | ||
70ab4434 DM |
173 | my $create_firewall_bridge_ovs = sub { |
174 | my ($iface, $bridge, $tag) = @_; | |
175 | ||
176 | my ($vmid, $devid) = &$parse_tap_devive_name($iface); | |
177 | my ($fwbr, undef, undef, $ovsintport) = &$compute_fwbr_names($vmid, $devid); | |
178 | ||
179 | my $bridgemtu = &$read_bridge_mtu($bridge); | |
180 | ||
181 | &$cond_create_bridge($fwbr); | |
182 | &$activate_interface($fwbr); | |
183 | ||
184 | &$bridge_add_interface($fwbr, $iface); | |
185 | ||
186 | &$ovs_bridge_add_port($bridge, $ovsintport, $tag, 1); | |
ac3a04b8 | 187 | &$activate_interface($ovsintport); |
70ab4434 DM |
188 | |
189 | # set the same mtu for ovs int port | |
190 | PVE::Tools::run_command("/sbin/ifconfig $ovsintport mtu $bridgemtu"); | |
191 | ||
192 | &$bridge_add_interface($fwbr, $ovsintport); | |
193 | }; | |
194 | ||
195 | my $cleanup_firewall_bridge = sub { | |
605bb891 DM |
196 | my ($iface) = @_; |
197 | ||
6c80e6d6 DM |
198 | my ($vmid, $devid) = &$parse_tap_devive_name($iface, 1); |
199 | return if !defined($vmid); | |
70ab4434 DM |
200 | my ($fwbr, $vethfw, $vethfwpeer, $ovsintport) = &$compute_fwbr_names($vmid, $devid); |
201 | ||
202 | # cleanup old port config from any openvswitch bridge | |
203 | if (-d "/sys/class/net/$ovsintport") { | |
204 | run_command("/usr/bin/ovs-vsctl del-port $ovsintport", outfunc => sub {}, errfunc => sub {}); | |
205 | } | |
605bb891 DM |
206 | |
207 | # delete old vethfw interface | |
208 | if (-d "/sys/class/net/$vethfw") { | |
209 | run_command("/sbin/ip link delete dev $vethfw", outfunc => sub {}, errfunc => sub {}); | |
210 | } | |
211 | ||
212 | # cleanup fwbr bridge | |
213 | if (-d "/sys/class/net/$fwbr") { | |
214 | run_command("/sbin/ip link set dev $fwbr down", outfunc => sub {}, errfunc => sub {}); | |
215 | run_command("/sbin/brctl delbr $fwbr", outfunc => sub {}, errfunc => sub {}); | |
216 | } | |
217 | }; | |
218 | ||
f0c190ee | 219 | sub tap_plug { |
605bb891 | 220 | my ($iface, $bridge, $tag, $firewall) = @_; |
f0c190ee | 221 | |
4cbabd40 AD |
222 | #cleanup old port config from any openvswitch bridge |
223 | eval {run_command("/usr/bin/ovs-vsctl del-port $iface", outfunc => sub {}, errfunc => sub {}) }; | |
224 | ||
098795e0 | 225 | if (-d "/sys/class/net/$bridge/bridge") { |
70ab4434 | 226 | &$cleanup_firewall_bridge($iface); # remove stale devices |
605bb891 | 227 | |
098795e0 DM |
228 | my $newbridge = activate_bridge_vlan($bridge, $tag); |
229 | copy_bridge_config($bridge, $newbridge) if $bridge ne $newbridge; | |
230 | ||
605bb891 DM |
231 | $newbridge = &$create_firewall_bridge_linux($iface, $newbridge) if $firewall; |
232 | ||
233 | &$bridge_add_interface($newbridge, $iface); | |
098795e0 | 234 | } else { |
70ab4434 DM |
235 | &$cleanup_firewall_bridge($iface); # remove stale devices |
236 | ||
237 | if ($firewall) { | |
238 | &$create_firewall_bridge_ovs($iface, $bridge, $tag); | |
239 | } else { | |
240 | &$ovs_bridge_add_port($bridge, $iface, $tag); | |
241 | } | |
4cbabd40 | 242 | } |
f0c190ee AD |
243 | } |
244 | ||
a84b65c0 | 245 | sub tap_unplug { |
2db1cc0d | 246 | my ($iface) = @_; |
a84b65c0 | 247 | |
2db1cc0d DM |
248 | my $path= "/sys/class/net/$iface/brport/bridge"; |
249 | if (-l $path) { | |
250 | my $bridge = basename(readlink($path)); | |
251 | #avoid insecure dependency; | |
252 | ($bridge) = $bridge =~ /(\S+)/; | |
4cbabd40 | 253 | |
098795e0 | 254 | system("/sbin/brctl delif $bridge $iface") == 0 || |
2db1cc0d | 255 | die "can't del interface '$iface' from bridge '$bridge'\n"; |
605bb891 | 256 | |
4cbabd40 | 257 | } |
70ab4434 DM |
258 | |
259 | &$cleanup_firewall_bridge($iface); | |
a84b65c0 AD |
260 | } |
261 | ||
b9436cda DM |
262 | sub copy_bridge_config { |
263 | my ($br0, $br1) = @_; | |
264 | ||
265 | return if $br0 eq $br1; | |
266 | ||
267 | my $br_configs = [ 'ageing_time', 'stp_state', 'priority', 'forward_delay', | |
ba4af65b | 268 | 'hello_time', 'max_age', 'multicast_snooping', 'multicast_querier']; |
b9436cda DM |
269 | |
270 | foreach my $sysname (@$br_configs) { | |
271 | eval { | |
272 | my $v0 = PVE::Tools::file_read_firstline("/sys/class/net/$br0/bridge/$sysname"); | |
273 | my $v1 = PVE::Tools::file_read_firstline("/sys/class/net/$br1/bridge/$sysname"); | |
274 | if ($v0 ne $v1) { | |
aec04803 | 275 | PVE::ProcFSTools::write_proc_entry("/sys/class/net/$br1/bridge/$sysname", $v0); |
b9436cda DM |
276 | } |
277 | }; | |
278 | warn $@ if $@; | |
279 | } | |
280 | } | |
281 | ||
70d89745 PRG |
282 | sub activate_bridge_vlan_slave { |
283 | my ($bridgevlan, $iface, $tag) = @_; | |
b9436cda | 284 | my $ifacevlan = "${iface}.$tag"; |
70d89745 | 285 | |
b9436cda DM |
286 | # create vlan on $iface is not already exist |
287 | if (! -d "/sys/class/net/$ifacevlan") { | |
02c9a6b4 DM |
288 | system("/sbin/vconfig add $iface $tag") == 0 || |
289 | die "can't add vlan tag $tag to interface $iface\n"; | |
b9436cda DM |
290 | } |
291 | ||
292 | # be sure to have the $ifacevlan up | |
605bb891 | 293 | &$activate_interface($ifacevlan); |
b9436cda DM |
294 | |
295 | # test if $vlaniface is already enslaved in another bridge | |
296 | my $path= "/sys/class/net/$ifacevlan/brport/bridge"; | |
297 | if (-l $path) { | |
298 | my $tbridge = basename(readlink($path)); | |
70d89745 | 299 | if ($tbridge ne $bridgevlan) { |
b9436cda | 300 | die "interface $ifacevlan already exist in bridge $tbridge\n"; |
eee4b32a PRG |
301 | } else { |
302 | # Port already attached to bridge: do nothing. | |
303 | return; | |
b9436cda DM |
304 | } |
305 | } | |
306 | ||
70d89745 | 307 | # add $ifacevlan to the bridge |
605bb891 | 308 | &$bridge_add_interface($bridgevlan, $ifacevlan); |
70d89745 PRG |
309 | } |
310 | ||
311 | sub activate_bridge_vlan { | |
312 | my ($bridge, $tag_param) = @_; | |
313 | ||
314 | die "bridge '$bridge' is not active\n" if ! -d "/sys/class/net/$bridge"; | |
315 | ||
316 | return $bridge if !defined($tag_param); # no vlan, simply return | |
317 | ||
318 | my $tag = int($tag_param); | |
319 | ||
320 | die "got strange vlan tag '$tag_param'\n" if $tag < 1 || $tag > 4094; | |
321 | ||
322 | my $bridgevlan = "${bridge}v$tag"; | |
323 | ||
c9030d97 PRG |
324 | my @ifaces = (); |
325 | my $dir = "/sys/class/net/$bridge/brif"; | |
326 | PVE::Tools::dir_glob_foreach($dir, '((eth|bond)\d+)', sub { | |
5ffa7628 | 327 | push @ifaces, $_[0]; |
c9030d97 PRG |
328 | }); |
329 | ||
5ffa7628 | 330 | die "no physical interface on bridge '$bridge'\n" if scalar(@ifaces) == 0; |
c9030d97 | 331 | |
b9436cda DM |
332 | # add bridgevlan if it doesn't already exist |
333 | if (! -d "/sys/class/net/$bridgevlan") { | |
9e14b1b7 | 334 | system("/sbin/brctl addbr $bridgevlan") == 0 || |
b9436cda DM |
335 | die "can't add bridge $bridgevlan\n"; |
336 | } | |
337 | ||
70d89745 | 338 | # for each physical interface (eth or bridge) bind them to bridge vlan |
c9030d97 PRG |
339 | foreach my $iface (@ifaces) { |
340 | activate_bridge_vlan_slave($bridgevlan, $iface, $tag); | |
341 | } | |
70d89745 | 342 | |
b9436cda DM |
343 | #fixme: set other bridge flags |
344 | ||
345 | # be sure to have the bridge up | |
346 | system("/sbin/ip link set $bridgevlan up") == 0 || | |
347 | die "can't up bridge $bridgevlan\n"; | |
70d89745 | 348 | |
b9436cda DM |
349 | return $bridgevlan; |
350 | } | |
351 | ||
352 | 1; |