use strict;
use warnings;
-use PVE::Tools qw(run_command);
+use PVE::Tools qw(run_command lock_file);
use PVE::ProcFSTools;
use PVE::INotify;
use File::Basename;
use IO::Socket::IP;
+use Socket qw(NI_NUMERICHOST NI_NUMERICSERV);
use POSIX qw(ECONNREFUSED);
use Net::IP;
-use Socket qw(IPPROTO_IP);
-
-use constant IFF_UP => 1;
-use constant IFNAMSIZ => 16;
-use constant SIOCGIFFLAGS => 0x8913;
-
# host network related utility functions
+our $PHYSICAL_NIC_RE = qr/(?:eth\d+|en[^:.]+|ib\d+)/;
+
our $ipv4_reverse_mask = [
'0.0.0.0',
'128.0.0.0',
];
our $ipv4_mask_hash_localnet = {
+ '255.0.0.0' => 8,
+ '255.128.0.0' => 9,
+ '255.192.0.0' => 10,
+ '255.224.0.0' => 11,
+ '255.240.0.0' => 12,
+ '255.248.0.0' => 13,
+ '255.252.0.0' => 14,
+ '255.254.0.0' => 15,
'255.255.0.0' => 16,
'255.255.128.0' => 17,
'255.255.192.0' => 18,
'255.255.255.240' => 28,
'255.255.255.248' => 29,
'255.255.255.252' => 30,
+ '255.255.255.254' => 31,
+ '255.255.255.255' => 32,
};
sub setup_tc_rate_limit {
my ($iface, $rate, $burst, $debug) = @_;
- system("/sbin/tc class del dev $iface parent 1: classid 1:1 >/dev/null 2>&1");
- system("/sbin/tc filter del dev $iface parent ffff: protocol all pref 50 u32 >/dev/null 2>&1");
- system("/sbin/tc qdisc del dev $iface ingress >/dev/null 2>&1");
- system("/sbin/tc qdisc del dev $iface root >/dev/null 2>&1");
+ # these are allowed / expected to fail, e.g. when there is no previous rate limit to remove
+ eval { run_command("/sbin/tc class del dev $iface parent 1: classid 1:1 >/dev/null 2>&1"); };
+ eval { run_command("/sbin/tc filter del dev $iface parent ffff: protocol all pref 50 u32 >/dev/null 2>&1"); };
+ eval { run_command("/sbin/tc qdisc del dev $iface ingress >/dev/null 2>&1"); };
+ eval { run_command("/sbin/tc qdisc del dev $iface root >/dev/null 2>&1"); };
return if !$rate;
run_command("/sbin/tc filter add dev $iface parent ffff: " .
"prio 50 basic " .
"police rate ${rate}bps burst ${burst}b mtu 64kb " .
- "drop flowid :1");
+ "drop");
if ($debug) {
print "DEBUG tc settings\n";
return ($fwbr, $vethfw, $vethfwpeer, $ovsintport);
};
+sub iface_delete($) {
+ my ($iface) = @_;
+ run_command(['/sbin/ip', 'link', 'delete', 'dev', $iface], noerr => 1)
+ == 0 or die "failed to delete interface '$iface'\n";
+}
+
+sub iface_create($$@) {
+ my ($iface, $type, @args) = @_;
+ run_command(['/sbin/ip', 'link', 'add', $iface, 'type', $type, @args], noerr => 1)
+ == 0 or die "failed to create interface '$iface'\n";
+}
+
+sub iface_set($@) {
+ my ($iface, @opts) = @_;
+ run_command(['/sbin/ip', 'link', 'set', $iface, @opts], noerr => 1)
+ == 0 or die "failed to set interface options for '$iface' (".join(' ', @opts).")\n";
+}
+
+# helper for nicer error messages:
+sub iface_set_master($$) {
+ my ($iface, $master) = @_;
+ if (defined($master)) {
+ eval { iface_set($iface, 'master', $master) };
+ die "can't enslave '$iface' to '$master'\n" if $@;
+ } else {
+ eval { iface_set($iface, 'nomaster') };
+ die "can't unenslave '$iface'\n" if $@;
+ }
+}
+
my $cond_create_bridge = sub {
my ($bridge) = @_;
if (! -d "/sys/class/net/$bridge") {
- system("/sbin/brctl addbr $bridge") == 0 ||
- die "can't add bridge '$bridge'\n";
+ iface_create($bridge, 'bridge');
+ disable_ipv6($bridge);
}
};
+sub disable_ipv6 {
+ my ($iface) = @_;
+ return if !-d '/proc/sys/net/ipv6'; # ipv6 might be completely disabled
+ my $file = "/proc/sys/net/ipv6/conf/$iface/disable_ipv6";
+ open(my $fh, '>', $file) or die "failed to open $file for writing: $!\n";
+ print {$fh} "1\n" or die "failed to disable link-local ipv6 for $iface\n";
+ close($fh);
+}
+
my $bridge_add_interface = sub {
my ($bridge, $iface, $tag, $trunks) = @_;
- system("/sbin/brctl addif $bridge $iface") == 0 ||
- die "can't add interface 'iface' to bridge '$bridge'\n";
+ # drop link local address (it can't be used when on a bridge anyway)
+ disable_ipv6($iface);
+ iface_set_master($iface, $bridge);
my $vlan_aware = PVE::Tools::file_read_firstline("/sys/class/net/$bridge/bridge/vlan_filtering");
if ($vlan_aware) {
if ($tag) {
- system("/sbin/bridge vlan add dev $iface vid $tag pvid untagged") == 0 ||
- die "unable to add vlan $tag to interface $iface\n";
+ system({'/sbin/bridge'} 'bridge', 'vlan', 'del', 'dev', $iface, 'vid', '1-4094') == 0
+ or die "failed to remove default vlan tags of $iface\n";
+ system({'/sbin/bridge'} 'bridge', 'vlan', 'add', 'dev', $iface, 'vid', $tag, 'pvid', 'untagged') == 0
+ or die "unable to add vlan $tag to interface $iface\n";
+
+ warn "Caution: Setting VLAN ID 1 on a VLAN aware bridge may be dangerous\n" if $tag == 1;
} else {
system("/sbin/bridge vlan add dev $iface vid 2-4094") == 0 ||
die "unable to add default vlan tags to interface $iface\n" if !$trunks;
$cmd .= " -- set Interface $iface type=internal" if $internal;
system($cmd) == 0 ||
die "can't add ovs port '$iface'\n";
+ disable_ipv6($iface);
};
my $activate_interface = sub {
my $bridgemtu = &$read_bridge_mtu($bridge);
eval {
- PVE::Tools::run_command("/sbin/ifconfig $iface 0.0.0.0 promisc up mtu $bridgemtu");
+ disable_ipv6($iface);
+ PVE::Tools::run_command(['/sbin/ip', 'link', 'set', $iface, 'up', 'promisc', 'on', 'mtu', $bridgemtu]);
};
die "interface activation failed\n" if $@;
}
}
# up vethpair
+ disable_ipv6($veth);
+ disable_ipv6($vethpeer);
&$activate_interface($veth);
&$activate_interface($vethpeer);
}
my ($veth) = @_;
if (-d "/sys/class/net/$veth") {
- run_command("/sbin/ip link delete dev $veth", outfunc => sub {}, errfunc => sub {});
+ iface_delete($veth);
}
-
+ eval { tap_unplug($veth) };
}
my $create_firewall_bridge_linux = sub {
&$activate_interface($ovsintport);
# set the same mtu for ovs int port
- PVE::Tools::run_command("/sbin/ifconfig $ovsintport mtu $bridgemtu");
+ PVE::Tools::run_command(['/sbin/ip', 'link', 'set', $ovsintport, 'mtu', $bridgemtu]);
&$bridge_add_interface($fwbr, $ovsintport);
};
# cleanup fwbr bridge
if (-d "/sys/class/net/$fwbr") {
- run_command("/sbin/ip link set dev $fwbr down", outfunc => sub {}, errfunc => sub {});
- run_command("/sbin/brctl delbr $fwbr", outfunc => sub {}, errfunc => sub {});
+ iface_delete($fwbr);
}
};
#avoid insecure dependency;
($bridge) = $bridge =~ /(\S+)/;
- system("/sbin/brctl delif $bridge $iface") == 0 ||
- die "can't del interface '$iface' from bridge '$bridge'\n";
-
+ iface_set_master($iface, undef);
}
&$cleanup_firewall_bridge($iface);
+ #cleanup old port config from any openvswitch bridge
+ eval {run_command("/usr/bin/ovs-vsctl del-port $iface", outfunc => sub {}, errfunc => sub {}) };
}
sub copy_bridge_config {
# create vlan on $iface is not already exist
if (! -d "/sys/class/net/$ifacevlan") {
- system("/sbin/ip link add link $iface name ${iface}.${tag} type vlan id $tag") == 0 ||
+ system("/sbin/ip link add link $iface name $ifacevlan type vlan id $tag") == 0 ||
die "can't add vlan tag $tag to interface $iface\n";
+
+ # remove ipv6 link-local address before activation
+ disable_ipv6($ifacevlan);
}
# be sure to have the $ifacevlan up
my @ifaces = ();
my $dir = "/sys/class/net/$bridge/brif";
- PVE::Tools::dir_glob_foreach($dir, '((eth|bond)\d+(\.\d+)?)', sub {
+ PVE::Tools::dir_glob_foreach($dir, '(((eth|bond)\d+|en[^.]+)(\.\d+)?)', sub {
push @ifaces, $_[0];
});
die "no physical interface on bridge '$bridge'\n" if scalar(@ifaces) == 0;
- # add bridgevlan if it doesn't already exist
- if (! -d "/sys/class/net/$bridgevlan") {
- system("/sbin/brctl addbr $bridgevlan") == 0 ||
- die "can't add bridge $bridgevlan\n";
- }
+ lock_network(sub {
+ # add bridgevlan if it doesn't already exist
+ if (! -d "/sys/class/net/$bridgevlan") {
+ iface_create($bridgevlan, 'bridge');
+ }
- # for each physical interface (eth or bridge) bind them to bridge vlan
- foreach my $iface (@ifaces) {
- activate_bridge_vlan_slave($bridgevlan, $iface, $tag);
- }
+ # for each physical interface (eth or bridge) bind them to bridge vlan
+ foreach my $iface (@ifaces) {
+ activate_bridge_vlan_slave($bridgevlan, $iface, $tag);
+ }
- #fixme: set other bridge flags
+ #fixme: set other bridge flags
- # be sure to have the bridge up
- system("/sbin/ip link set $bridgevlan up") == 0 ||
- die "can't up bridge $bridgevlan\n";
-
+ # remove ipv6 link-local address before activation
+ disable_ipv6($bridgevlan);
+ # be sure to have the bridge up
+ &$activate_interface($bridgevlan);
+ });
return $bridgevlan;
}
return $cidr_obj->overlaps($ip_obj) == $Net::IP::IP_B_IN_A_OVERLAP;
}
-# struct ifreq { // FOR SIOCGIFFLAGS:
-# char ifrn_name[IFNAMSIZ]
-# short ifru_flags
-# };
-my $STRUCT_IFREQ_SIOCGIFFLAGS = 'Z' . IFNAMSIZ . 's1';
-sub get_active_interfaces {
- # Use the interface name list from /proc/net/dev
- open my $fh, '<', '/proc/net/dev'
- or die "failed to open /proc/net/dev: $!\n";
- # And filter by IFF_UP flag fetched via a PF_INET6 socket ioctl:
- socket my $sock, PF_INET6, SOCK_DGRAM, &IPPROTO_IP
- or die "failed to open socket\n";
-
- my $ifaces = [];
- while(defined(my $line = <$fh>)) {
- next if $line !~ /^\s*([^:\s]+):/;
- my $ifname = $1;
- my $ifreq = pack($STRUCT_IFREQ_SIOCGIFFLAGS, $1, 0);
- if (!defined(ioctl($sock, SIOCGIFFLAGS, $ifreq))) {
- warn "failed to get interface flags for: $ifname\n";
- next;
+
+sub get_local_ip_from_cidr {
+ my ($cidr) = @_;
+
+ my $cmd = ['/sbin/ip', 'address', 'show', 'to', $cidr, 'up'];
+
+ my $IPs = [];
+
+ my $code = sub {
+ my $line = shift;
+
+ if ($line =~ m!^\s*inet(?:6)?\s+($PVE::Tools::IPRE)/\d+!) {
+ push @$IPs, $1;
}
- my ($name, $flags) = unpack($STRUCT_IFREQ_SIOCGIFFLAGS, $ifreq);
- push @$ifaces, $1 if ($flags & IFF_UP);
+ };
+
+ PVE::Tools::run_command($cmd, outfunc => $code);
+
+ return $IPs;
+}
+
+sub addr_to_ip {
+ my ($addr) = @_;
+ my ($err, $host, $port) = Socket::getnameinfo($addr, NI_NUMERICHOST | NI_NUMERICSERV);
+ die "failed to get numerical host address: $err\n" if $err;
+ return ($host, $port) if wantarray;
+ return $host;
+}
+
+sub get_ip_from_hostname {
+ my ($hostname, $noerr) = @_;
+
+ my ($family, $ip);
+
+ eval {
+ my @res = PVE::Tools::getaddrinfo_all($hostname);
+ $family = $res[0]->{family};
+ $ip = addr_to_ip($res[0]->{addr})
+ };
+ if ($@) {
+ die "hostname lookup '$hostname' failed - $@" if !$noerr;
+ return undef;
+ }
+
+ if ($ip =~ m/^127\.|^::1$/) {
+ die "hostname lookup '$hostname' failed - got local IP address '$ip'\n" if !$noerr;
+ return undef;
}
- close $fh;
- close $sock;
- return $ifaces;
+
+ return wantarray ? ($ip, $family) : $ip;
+}
+
+sub lock_network {
+ my ($code, @param) = @_;
+ my $res = lock_file('/var/lock/pve-network.lck', 10, $code, @param);
+ die $@ if $@;
+ return $res;
}
1;
projects / pve-common.git / blobdiff