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network: tap_plug: fix mtu

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- ovsint port mtu need to be set with ""ovs-vsctl set mtu-request"
- update mtu on already existing interfaces (fwbr,fwln,tap,veth)
  if existing tap|veth interface is replugged on a different mtu bridge

Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
This commit is contained in:
Alexandre Derumier 2022-08-25 11:27:53 +02:00 committed by Thomas Lamprecht
parent 0fbcf73656
commit c3db7708a4
1 changed files with 21 additions and 10 deletions
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31
src/PVE/Network.pm
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@ -219,6 +219,11 @@ my $bridge_disable_interface_learning = sub {
my $bridge_add_interface = sub {
my ($bridge, $iface, $tag, $trunks) = @_;
my $bridgemtu = read_bridge_mtu($bridge);
eval {
PVE::Tools::run_command(['/sbin/ip', 'link', 'set', $iface, 'mtu', $bridgemtu]);
};
# drop link local address (it can't be used when on a bridge anyway)
disable_ipv6($iface);
iface_set_master($iface, $bridge);
@ -259,6 +264,9 @@ my $ovs_bridge_add_port = sub {
push @$cmd, "trunks=". join(',', $trunks) if $trunks;
push @$cmd, "vlan_mode=native-untagged" if $tag && $trunks;
my $bridgemtu = read_bridge_mtu($bridge);
push @$cmd, '--', 'set', 'Interface', $iface, "mtu_request=$bridgemtu";
if ($internal) {
# second command
push @$cmd, '--', 'set', 'Interface', $iface, 'type=internal';
@ -271,9 +279,12 @@ my $ovs_bridge_add_port = sub {
};
my $activate_interface = sub {
my ($iface) = @_;
my ($iface, $mtu) = @_;
eval { run_command(['/sbin/ip', 'link', 'set', $iface, 'up']) };
my $cmd = ['/sbin/ip', 'link', 'set', $iface, 'up'];
push (@$cmd, ('mtu', $mtu)) if $mtu;
eval { run_command($cmd) };
die "can't activate interface '$iface' - $@\n" if $@;
};
@ -354,8 +365,9 @@ sub veth_create {
# up vethpair
disable_ipv6($veth);
disable_ipv6($vethpeer);
&$activate_interface($veth);
&$activate_interface($vethpeer);
&$activate_interface($veth, $bridgemtu);
&$activate_interface($vethpeer, $bridgemtu);
}
sub veth_delete {
@ -373,8 +385,10 @@ my $create_firewall_bridge_linux = sub {
my ($vmid, $devid) = &$parse_tap_device_name($iface);
my ($fwbr, $vethfw, $vethfwpeer) = &$compute_fwbr_names($vmid, $devid);
my $bridgemtu = read_bridge_mtu($bridge);
&$cond_create_bridge($fwbr);
&$activate_interface($fwbr);
&$activate_interface($fwbr, $bridgemtu);
copy_bridge_config($bridge, $fwbr);
veth_create($vethfw, $vethfwpeer, $bridge);
@ -395,15 +409,12 @@ my $create_firewall_bridge_ovs = sub {
my $bridgemtu = read_bridge_mtu($bridge);
&$cond_create_bridge($fwbr);
&$activate_interface($fwbr);
&$activate_interface($fwbr, $bridgemtu);
&$bridge_add_interface($fwbr, $iface);
&$ovs_bridge_add_port($bridge, $ovsintport, $tag, 1, $trunks);
&$activate_interface($ovsintport);
# set the same mtu for ovs int port
run_command(['/sbin/ip', 'link', 'set', $ovsintport, 'mtu', $bridgemtu]);
&$activate_interface($ovsintport, $bridgemtu);
&$bridge_add_interface($fwbr, $ovsintport);
&$bridge_disable_interface_learning($ovsintport) if $no_learning;