pve-bridge

   1 #!/usr/bin/perl -w
   2
   3 use strict;
   4 use PVE::QemuServer;
   5 use PVE::Tools qw(run_command);
   6 use PVE::Storage;
   7
   8 my $iface = shift;
   9
  10 die "no interface specified\n" if !$iface;
  11
  12 die "got strange interface name '$iface'\n"
  13     if $iface !~ m/^tap(\d+)i(\d+)$/;
  14
  15 my $vmid = $1;
  16 my $netid = "net$2";
  17
  18 my $conf = PVE::QemuServer::load_config ($vmid);
  19
  20 die "unable to get network config '$netid'\n"
  21     if !$conf->{$netid};
  22
  23 my $net = PVE::QemuServer::parse_net($conf->{$netid});
  24 die "unable to parse network config '$netid'\n" if !$net;
  25
  26 my $bridge = $net->{bridge};
  27 die "unable to get bridge setting\n" if !$bridge;
  28
  29 system ("/sbin/ifconfig $iface 0.0.0.0 promisc up") == 0 ||
  30     die "interface activation failed\n";
  31
  32 if ($net->{rate}) {
  33
  34     my $rate = int($net->{rate}*1024*1024);
  35     my $burst = 1024*1024;
  36
  37     system("/sbin/tc qdisc del dev $iface ingres >/dev/null 2>&1");
  38     system("/sbin/tc qdisc del dev $iface root >/dev/null 2>&1");
  39
  40     run_command("/sbin/tc qdisc add dev $iface handle ffff: ingress");
  41
  42     # this does not work wit virtio - don't know why
  43     #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");
  44     # so we use avrate instead
  45     run_command("/sbin/tc filter add dev $iface parent ffff: " .
  46                 "protocol ip prio 50 estimator 1sec 8sec " .
  47                 "u32 match ip src 0.0.0.0/0 police avrate ${rate}bps drop flowid :1");
  48
  49     # tbf does not work for unknown reason
  50     #$TC qdisc add dev $DEV root tbf rate $RATE latency 100ms burst $BURST
  51     # so we use htb instead
  52     run_command("/sbin/tc qdisc add dev $iface root handle 1: htb default 1");
  53     run_command("/sbin/tc class add dev $iface parent 1: classid 1:1 " .
  54                 "htb rate ${rate}bps burst ${burst}b");
  55
  56     # enable this to debug tc
  57     if (0) {
  58         print "DEBUG tc settings\n";
  59         system("/sbin/tc qdisc ls dev $iface");
  60         system("/sbin/tc class ls dev $iface");
  61         system("/sbin/tc filter ls dev $iface parent ffff:");
  62     }
  63
  64 }
  65
  66 if ($net->{tag}) {
  67
  68     my $vlan = $net->{tag};
  69     my $bridgevlan = $bridge."v".$vlan;
  70
  71     #check if we have an only one ethX or bondX interface in the bridge
  72     my (undef, $interface) = PVE::Storage::dir_glob_regex("/sys/class/net/$bridge/brif/", '((eth|bond)\d+)');
  73     die "No interface in bridge" if !$interface;
  74     die "You can't have 2 physical interfaces on the same bridge" if(ref($interface) eq 'ARRAY');
  75
  76     my $interfacevlan = $interface.".".$vlan;
  77
  78     #create vlan on interface is not already exist
  79     unless (-d "/sys/class/net/$interfacevlan") {
  80     system ("/sbin/vconfig add $interface $vlan") == 0 ||
  81         die "can't add vlan $vlan to interface $interface\n";
  82     }
  83
  84     #be sure to have the interfacevlan up
  85     system ("/sbin/ip link set $interfacevlan up") == 0 ||
  86         die "can't up interface $interfacevlan\n";
  87
  88     # test if vlaninterface is already enslave in another bridge
  89     my $path="/sys/class/net/$interfacevlan/brport/bridge";
  90     if(-e $path) {
  91         my $targetbridge = readlink($path);
  92         if($targetbridge =~ m/([0-9A-Za-z]+)$/) {
  93                 die "Interface $interfacevlan already exist in bridge $targetbridge" if $1 ne $bridgevlan;
  94         }
  95     }
  96
  97     #add bridgevlan if it doesn't already exist
  98     unless (-d "/sys/class/net/$bridgevlan") {
  99         system ("/usr/sbin/brctl addbr $bridgevlan") == 0 ||
 100             die "can't add bridge $bridgevlan\n";
 101     }
 102
 103     #be sure to have the bridge up
 104     system ("/sbin/ip link set $bridgevlan up") == 0 ||
 105         die "can't up bridge $bridgevlan\n";
 106
 107     #add interfacevlan to the bridge
 108     my (undef, $interfacevlanfound) = PVE::Storage::dir_glob_regex("/sys/class/net/$bridgevlan/brif/", "($interface\.$vlan)");
 109     if (!defined($interfacevlanfound)) {
 110      system ("/usr/sbin/brctl addif $bridgevlan $interfacevlan") == 0 ||
 111      die "can't add interface $interfacevlan to bridge $bridgevlan\n";
 112     }
 113
 114     $bridge=$bridgevlan;
 115 }
 116
 117
 118 system ("/usr/sbin/brctl addif $bridge $iface") == 0 ||
 119     die "can't add interface to bridge\n";
 120
 121 exit 0;