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 $parse_tap_devive_name = sub {
73 if ($iface =~ m/^tap(\d+)i(\d+)$/) {
76 } elsif ($iface =~ m/^veth(\d+)\.(\d+)$/) {
80 die "wrong interface name $iface";
83 return ($vmid, $devid);
86 my $compute_fwbr_names_linux = sub {
87 my ($vmid, $devid) = @_;
89 my $fwbr = "fwbr${vmid}i${devid}";
90 my $vethfw = "link${vmid}i${devid}";
91 my $vethfwpeer = "link${vmid}p${devid}";
93 return ($fwbr, $vethfw, $vethfwpeer);
96 my $compute_ovs_firewall_port_name = sub {
97 my ($vmid, $devid) = @_;
99 return "fwint${vmid}i${devid}";
102 my $cond_create_bridge = sub {
105 if (! -d
"/sys/class/net/$bridge") {
106 system("/sbin/brctl addbr $bridge") == 0 ||
107 die "can't add bridge '$bridge'\n";
111 my $bridge_add_interface = sub {
112 my ($bridge, $iface) = @_;
114 system("/sbin/brctl addif $bridge $iface") == 0 ||
115 die "can't add interface 'iface' to bridge '$bridge'\n";
118 my $activate_interface = sub {
121 system("/sbin/ip link set $iface up") == 0 ||
122 die "can't activate interface '$iface'\n";
126 my ($iface, $bridge) = @_;
128 die "unable to get bridge setting\n" if !$bridge;
130 my $bridgemtu = &$read_bridge_mtu($bridge);
133 PVE
::Tools
::run_command
("/sbin/ifconfig $iface 0.0.0.0 promisc up mtu $bridgemtu");
135 die "interface activation failed\n" if $@;
139 my $create_firewall_bridge_linux = sub {
140 my ($iface, $bridge) = @_;
142 my ($vmid, $devid) = &$parse_tap_devive_name($iface);
143 my ($fwbr, $vethfw, $vethfwpeer) = &$compute_fwbr_names_linux($vmid, $devid);
145 my $bridgemtu = &$read_bridge_mtu($bridge);
147 &$cond_create_bridge($fwbr);
148 &$activate_interface($fwbr);
150 copy_bridge_config
($bridge, $fwbr);
152 if (! -d
"/sys/class/net/$vethfw") {
153 system("/sbin/ip link add name $vethfw type veth peer name $vethfwpeer mtu $bridgemtu") == 0 ||
154 die "can't create interface $vethfw\n";
158 &$activate_interface($vethfw);
159 &$activate_interface($vethfwpeer);
161 &$bridge_add_interface($bridge, $vethfw);
162 &$bridge_add_interface($fwbr, $vethfwpeer);
167 my $cleanup_firewall_bridge_linux = sub {
170 my ($vmid, $devid) = &$parse_tap_devive_name($iface);
171 my ($fwbr, $vethfw, $vethfwpeer) = &$compute_fwbr_names_linux($vmid, $devid);
173 # delete old vethfw interface
174 if (-d
"/sys/class/net/$vethfw") {
175 run_command
("/sbin/ip link delete dev $vethfw", outfunc
=> sub {}, errfunc
=> sub {});
178 # cleanup fwbr bridge
179 if (-d
"/sys/class/net/$fwbr") {
180 run_command
("/sbin/ip link set dev $fwbr down", outfunc
=> sub {}, errfunc
=> sub {});
181 run_command
("/sbin/brctl delbr $fwbr", outfunc
=> sub {}, errfunc
=> sub {});
186 my ($iface, $bridge, $tag, $firewall) = @_;
188 #cleanup old port config from any openvswitch bridge
189 eval {run_command
("/usr/bin/ovs-vsctl del-port $iface", outfunc
=> sub {}, errfunc
=> sub {}) };
191 if (-d
"/sys/class/net/$bridge/bridge") {
192 &$cleanup_firewall_bridge_linux($iface); # remove stale devices
194 my $newbridge = activate_bridge_vlan
($bridge, $tag);
195 copy_bridge_config
($bridge, $newbridge) if $bridge ne $newbridge;
197 $newbridge = &$create_firewall_bridge_linux($iface, $newbridge) if $firewall;
199 &$bridge_add_interface($newbridge, $iface);
201 my $cmd = "/usr/bin/ovs-vsctl add-port $bridge $iface";
202 $cmd .= " tag=$tag" if $tag;
204 die "can't add interface to bridge\n";
211 my $path= "/sys/class/net/$iface/brport/bridge";
213 my $bridge = basename
(readlink($path));
214 #avoid insecure dependency;
215 ($bridge) = $bridge =~ /(\S+)/;
217 system("/sbin/brctl delif $bridge $iface") == 0 ||
218 die "can't del interface '$iface' from bridge '$bridge'\n";
220 &$cleanup_firewall_bridge_linux($iface);
222 system ("/usr/bin/ovs-vsctl del-port $iface") == 0 ||
223 die "can't del ovs port '$iface'\n";
227 sub copy_bridge_config
{
228 my ($br0, $br1) = @_;
230 return if $br0 eq $br1;
232 my $br_configs = [ 'ageing_time', 'stp_state', 'priority', 'forward_delay',
233 'hello_time', 'max_age', 'multicast_snooping', 'multicast_querier'];
235 foreach my $sysname (@$br_configs) {
237 my $v0 = PVE
::Tools
::file_read_firstline
("/sys/class/net/$br0/bridge/$sysname");
238 my $v1 = PVE
::Tools
::file_read_firstline
("/sys/class/net/$br1/bridge/$sysname");
240 PVE
::ProcFSTools
::write_proc_entry
("/sys/class/net/$br1/bridge/$sysname", $v0);
247 sub activate_bridge_vlan_slave
{
248 my ($bridgevlan, $iface, $tag) = @_;
249 my $ifacevlan = "${iface}.$tag";
251 # create vlan on $iface is not already exist
252 if (! -d
"/sys/class/net/$ifacevlan") {
253 system("/sbin/vconfig add $iface $tag") == 0 ||
254 die "can't add vlan tag $tag to interface $iface\n";
257 # be sure to have the $ifacevlan up
258 &$activate_interface($ifacevlan);
260 # test if $vlaniface is already enslaved in another bridge
261 my $path= "/sys/class/net/$ifacevlan/brport/bridge";
263 my $tbridge = basename
(readlink($path));
264 if ($tbridge ne $bridgevlan) {
265 die "interface $ifacevlan already exist in bridge $tbridge\n";
267 # Port already attached to bridge: do nothing.
272 # add $ifacevlan to the bridge
273 &$bridge_add_interface($bridgevlan, $ifacevlan);
276 sub activate_bridge_vlan
{
277 my ($bridge, $tag_param) = @_;
279 die "bridge '$bridge' is not active\n" if ! -d
"/sys/class/net/$bridge";
281 return $bridge if !defined($tag_param); # no vlan, simply return
283 my $tag = int($tag_param);
285 die "got strange vlan tag '$tag_param'\n" if $tag < 1 || $tag > 4094;
287 my $bridgevlan = "${bridge}v$tag";
290 my $dir = "/sys/class/net/$bridge/brif";
291 PVE
::Tools
::dir_glob_foreach
($dir, '((eth|bond)\d+)', sub {
295 die "no physical interface on bridge '$bridge'\n" if scalar(@ifaces) == 0;
297 # add bridgevlan if it doesn't already exist
298 if (! -d
"/sys/class/net/$bridgevlan") {
299 system("/sbin/brctl addbr $bridgevlan") == 0 ||
300 die "can't add bridge $bridgevlan\n";
303 # for each physical interface (eth or bridge) bind them to bridge vlan
304 foreach my $iface (@ifaces) {
305 activate_bridge_vlan_slave
($bridgevlan, $iface, $tag);
308 #fixme: set other bridge flags
310 # be sure to have the bridge up
311 system("/sbin/ip link set $bridgevlan up") == 0 ||
312 die "can't up bridge $bridgevlan\n";