5 use PVE
::Tools
qw(run_command);
10 # host network related utility functions
12 sub setup_tc_rate_limit
{
13 my ($iface, $rate, $burst, $debug) = @_;
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");
17 system("/sbin/tc qdisc del dev $iface ingress >/dev/null 2>&1");
18 system("/sbin/tc qdisc del dev $iface root >/dev/null 2>&1");
22 run_command
("/sbin/tc qdisc add dev $iface handle ffff: ingress");
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
27 run_command
("/sbin/tc filter add dev $iface parent ffff: " .
28 "protocol ip prio 50 estimator 1sec 8sec " .
29 "u32 match ip src 0.0.0.0/0 police avrate ${rate}bps drop flowid :1");
31 # tbf does not work for unknown reason
32 #$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");
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 $iface parent ffff:");
47 my ($iface, $rate) = @_;
50 $rate = int($rate*1024*1024);
51 my $burst = 1024*1024;
53 setup_tc_rate_limit
($iface, $rate, $burst, $debug);
56 my $read_bridge_mtu = sub {
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 $mtu !~ /^(\d+)$/;
68 my $parse_tap_devive_name = sub {
69 my ($iface, $noerr) = @_;
73 if ($iface =~ m/^tap(\d+)i(\d+)$/) {
76 } elsif ($iface =~ m/^veth(\d+)\.(\d+)$/) {
80 return undef if $noerr;
81 die "can't create firewall bridge for random interface name '$iface'\n";
84 return ($vmid, $devid);
87 my $compute_fwbr_names = sub {
88 my ($vmid, $devid) = @_;
90 my $fwbr = "fwbr${vmid}i${devid}";
91 # Note: the firewall use 'fwln+' to filter traffic to VMs
92 my $vethfw = "fwln${vmid}i${devid}";
93 my $vethfwpeer = "fwpr${vmid}p${devid}";
94 my $ovsintport = "fwln${vmid}o${devid}";
96 return ($fwbr, $vethfw, $vethfwpeer, $ovsintport);
99 my $cond_create_bridge = sub {
102 if (! -d
"/sys/class/net/$bridge") {
103 system("/sbin/brctl addbr $bridge") == 0 ||
104 die "can't add bridge '$bridge'\n";
108 my $bridge_add_interface = sub {
109 my ($bridge, $iface) = @_;
111 system("/sbin/brctl addif $bridge $iface") == 0 ||
112 die "can't add interface 'iface' to bridge '$bridge'\n";
115 my $ovs_bridge_add_port = sub {
116 my ($bridge, $iface, $tag, $internal) = @_;
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 $internal;
122 die "can't add ovs port '$iface'\n";
125 my $activate_interface = sub {
128 system("/sbin/ip link set $iface up") == 0 ||
129 die "can't activate interface '$iface'\n";
133 my ($iface, $bridge) = @_;
135 die "unable to get bridge setting\n" if !$bridge;
137 my $bridgemtu = &$read_bridge_mtu($bridge);
140 PVE
::Tools
::run_command
("/sbin/ifconfig $iface 0.0.0.0 promisc up mtu $bridgemtu");
142 die "interface activation failed\n" if $@;
146 my ($veth, $vethpeer, $bridge, $mac) = @_;
148 die "unable to get bridge setting\n" if !$bridge;
150 my $bridgemtu = &$read_bridge_mtu($bridge);
153 if (! -d
"/sys/class/net/$veth") {
154 my $cmd = "/sbin/ip link add name $veth type veth peer name $vethpeer mtu $bridgemtu";
155 $cmd .= " addr $mac" if $mac;
156 system($cmd) == 0 || die "can't create interface $veth\n";
160 &$activate_interface($veth);
161 &$activate_interface($vethpeer);
165 my $create_firewall_bridge_linux = sub {
166 my ($iface, $bridge) = @_;
168 my ($vmid, $devid) = &$parse_tap_devive_name($iface);
169 my ($fwbr, $vethfw, $vethfwpeer) = &$compute_fwbr_names($vmid, $devid);
171 &$cond_create_bridge($fwbr);
172 &$activate_interface($fwbr);
174 copy_bridge_config
($bridge, $fwbr);
175 veth_create
($vethfw, $vethfwpeer, $bridge);
177 &$bridge_add_interface($fwbr, $vethfw);
178 &$bridge_add_interface($bridge, $vethfwpeer);
183 my $create_firewall_bridge_ovs = sub {
184 my ($iface, $bridge, $tag) = @_;
186 my ($vmid, $devid) = &$parse_tap_devive_name($iface);
187 my ($fwbr, undef, undef, $ovsintport) = &$compute_fwbr_names($vmid, $devid);
189 my $bridgemtu = &$read_bridge_mtu($bridge);
191 &$cond_create_bridge($fwbr);
192 &$activate_interface($fwbr);
194 &$bridge_add_interface($fwbr, $iface);
196 &$ovs_bridge_add_port($bridge, $ovsintport, $tag, 1);
197 &$activate_interface($ovsintport);
199 # set the same mtu for ovs int port
200 PVE
::Tools
::run_command
("/sbin/ifconfig $ovsintport mtu $bridgemtu");
202 &$bridge_add_interface($fwbr, $ovsintport);
205 my $cleanup_firewall_bridge = sub {
208 my ($vmid, $devid) = &$parse_tap_devive_name($iface, 1);
209 return if !defined($vmid);
210 my ($fwbr, $vethfw, $vethfwpeer, $ovsintport) = &$compute_fwbr_names($vmid, $devid);
212 # cleanup old port config from any openvswitch bridge
213 if (-d
"/sys/class/net/$ovsintport") {
214 run_command
("/usr/bin/ovs-vsctl del-port $ovsintport", outfunc
=> sub {}, errfunc
=> sub {});
217 # delete old vethfw interface
218 if (-d
"/sys/class/net/$vethfw") {
219 run_command
("/sbin/ip link delete dev $vethfw", outfunc
=> sub {}, errfunc
=> sub {});
222 # cleanup fwbr bridge
223 if (-d
"/sys/class/net/$fwbr") {
224 run_command
("/sbin/ip link set dev $fwbr down", outfunc
=> sub {}, errfunc
=> sub {});
225 run_command
("/sbin/brctl delbr $fwbr", outfunc
=> sub {}, errfunc
=> sub {});
230 my ($iface, $bridge, $tag, $firewall) = @_;
232 #cleanup old port config from any openvswitch bridge
233 eval {run_command
("/usr/bin/ovs-vsctl del-port $iface", outfunc
=> sub {}, errfunc
=> sub {}) };
235 if (-d
"/sys/class/net/$bridge/bridge") {
236 &$cleanup_firewall_bridge($iface); # remove stale devices
238 my $newbridge = activate_bridge_vlan
($bridge, $tag);
239 copy_bridge_config
($bridge, $newbridge) if $bridge ne $newbridge;
241 $newbridge = &$create_firewall_bridge_linux($iface, $newbridge) if $firewall;
243 &$bridge_add_interface($newbridge, $iface);
245 &$cleanup_firewall_bridge($iface); # remove stale devices
248 &$create_firewall_bridge_ovs($iface, $bridge, $tag);
250 &$ovs_bridge_add_port($bridge, $iface, $tag);
258 my $path= "/sys/class/net/$iface/brport/bridge";
260 my $bridge = basename
(readlink($path));
261 #avoid insecure dependency;
262 ($bridge) = $bridge =~ /(\S+)/;
264 system("/sbin/brctl delif $bridge $iface") == 0 ||
265 die "can't del interface '$iface' from bridge '$bridge'\n";
269 &$cleanup_firewall_bridge($iface);
272 sub copy_bridge_config
{
273 my ($br0, $br1) = @_;
275 return if $br0 eq $br1;
277 my $br_configs = [ 'ageing_time', 'stp_state', 'priority', 'forward_delay',
278 'hello_time', 'max_age', 'multicast_snooping', 'multicast_querier'];
280 foreach my $sysname (@$br_configs) {
282 my $v0 = PVE
::Tools
::file_read_firstline
("/sys/class/net/$br0/bridge/$sysname");
283 my $v1 = PVE
::Tools
::file_read_firstline
("/sys/class/net/$br1/bridge/$sysname");
285 PVE
::ProcFSTools
::write_proc_entry
("/sys/class/net/$br1/bridge/$sysname", $v0);
292 sub activate_bridge_vlan_slave
{
293 my ($bridgevlan, $iface, $tag) = @_;
294 my $ifacevlan = "${iface}.$tag";
296 # create vlan on $iface is not already exist
297 if (! -d
"/sys/class/net/$ifacevlan") {
298 system("/sbin/vconfig add $iface $tag") == 0 ||
299 die "can't add vlan tag $tag to interface $iface\n";
302 # be sure to have the $ifacevlan up
303 &$activate_interface($ifacevlan);
305 # test if $vlaniface is already enslaved in another bridge
306 my $path= "/sys/class/net/$ifacevlan/brport/bridge";
308 my $tbridge = basename
(readlink($path));
309 if ($tbridge ne $bridgevlan) {
310 die "interface $ifacevlan already exist in bridge $tbridge\n";
312 # Port already attached to bridge: do nothing.
317 # add $ifacevlan to the bridge
318 &$bridge_add_interface($bridgevlan, $ifacevlan);
321 sub activate_bridge_vlan
{
322 my ($bridge, $tag_param) = @_;
324 die "bridge '$bridge' is not active\n" if ! -d
"/sys/class/net/$bridge";
326 return $bridge if !defined($tag_param); # no vlan, simply return
328 my $tag = int($tag_param);
330 die "got strange vlan tag '$tag_param'\n" if $tag < 1 || $tag > 4094;
332 my $bridgevlan = "${bridge}v$tag";
335 my $dir = "/sys/class/net/$bridge/brif";
336 PVE
::Tools
::dir_glob_foreach
($dir, '((eth|bond)\d+)', sub {
340 die "no physical interface on bridge '$bridge'\n" if scalar(@ifaces) == 0;
342 # add bridgevlan if it doesn't already exist
343 if (! -d
"/sys/class/net/$bridgevlan") {
344 system("/sbin/brctl addbr $bridgevlan") == 0 ||
345 die "can't add bridge $bridgevlan\n";
348 # for each physical interface (eth or bridge) bind them to bridge vlan
349 foreach my $iface (@ifaces) {
350 activate_bridge_vlan_slave
($bridgevlan, $iface, $tag);
353 #fixme: set other bridge flags
355 # be sure to have the bridge up
356 system("/sbin/ip link set $bridgevlan up") == 0 ||
357 die "can't up bridge $bridgevlan\n";