data/PVE/Network.pm

   1 package PVE::Network;
   2
   3 use strict;
   4 use PVE::Tools;
   5 use PVE::ProcFSTools;
   6 use PVE::INotify;
   7 use File::Basename;
   8
   9 # host network related utility functions
  10
  11 sub copy_bridge_config {
  12     my ($br0, $br1) = @_;
  13
  14     return if $br0 eq $br1;
  15
  16     my $br_configs = [ 'ageing_time', 'stp_state', 'priority', 'forward_delay',
  17                        'hello_time', 'max_age'];
  18
  19     foreach my $sysname (@$br_configs) {
  20         eval {
  21             my $v0 = PVE::Tools::file_read_firstline("/sys/class/net/$br0/bridge/$sysname");
  22             my $v1 = PVE::Tools::file_read_firstline("/sys/class/net/$br1/bridge/$sysname");
  23             if ($v0 ne $v1) {
  24                 system("echo \"$v0\" > /sys/class/net/$br1/bridge/$sysname") == 0 ||
  25                     warn "unable to set bridge config '$sysname'\n";
  26             }
  27         };
  28         warn $@ if $@;
  29     }
  30 }
  31
  32 sub activate_bridge_vlan {
  33     my ($bridge, $tag_param) = @_;
  34
  35     die "bridge '$bridge' is not active\n" if ! -d "/sys/class/net/$bridge";
  36
  37     return $bridge if !defined($tag_param); # no vlan, simply return
  38
  39     my $tag = int($tag_param);
  40
  41     die "got strange vlan tag '$tag_param'\n" if $tag < 1 || $tag > 4094;
  42
  43     my $bridgevlan = "${bridge}v$tag";
  44
  45     my $dir = "/sys/class/net/$bridge/brif";
  46
  47     #check if we have an only one ethX or bondX interface in the bridge
  48
  49     my $iface;
  50     PVE::Tools::dir_glob_foreach($dir, '((eth|bond)\d+)', sub {
  51         my ($slave) = @_;
  52
  53         die "more then one physical interfaces on bridge '$bridge'\n" if $iface;
  54         $iface = $slave;
  55
  56     });
  57
  58     die "no physical interface on bridge '$bridge'\n" if !$iface;
  59
  60     my $ifacevlan = "${iface}.$tag";
  61
  62     # create vlan on $iface is not already exist
  63     if (! -d "/sys/class/net/$ifacevlan") {
  64         system("/sbin/vconfig add $iface $tag") == 0 ||
  65             die "can't add vlan tag $tag to interface $iface\n";
  66     }
  67
  68     # be sure to have the $ifacevlan up
  69     system("/sbin/ip link set $ifacevlan up") == 0 ||
  70         die "can't up interface $ifacevlan\n";
  71
  72     # test if $vlaniface is already enslaved in another bridge
  73     my $path= "/sys/class/net/$ifacevlan/brport/bridge";
  74     if (-l $path) {
  75         my $tbridge = basename(readlink($path));
  76         if ($tbridge eq $bridgevlan) {
  77             # already member of bridge - assume setup is already done
  78             return $bridgevlan;
  79         } else {
  80             die "interface $ifacevlan already exist in bridge $tbridge\n";
  81         }
  82     }
  83
  84     # add bridgevlan if it doesn't already exist
  85     if (! -d "/sys/class/net/$bridgevlan") {
  86         system("/usr/sbin/brctl addbr $bridgevlan") == 0 ||
  87             die "can't add bridge $bridgevlan\n";
  88     }
  89
  90     #fixme: set other bridge flags
  91
  92     # be sure to have the bridge up
  93     system("/sbin/ip link set $bridgevlan up") == 0 ||
  94         die "can't up bridge $bridgevlan\n";
  95
  96     # add $ifacevlan to the bridge
  97     system("/usr/sbin/brctl addif $bridgevlan $ifacevlan") == 0 ||
  98         die "can't add interface $ifacevlan to bridge $bridgevlan\n";
  99
 100     return $bridgevlan;
 101 }
 102
 103 1;