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[network.pm] Subject: [pve-devel] [PATCH V3 pve-common 1/1] network: tap_plug: fix mtu X-BeenThere: pve-devel@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox VE development discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 25 Aug 2022 09:28:32 -0000 - 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 --- src/PVE/Network.pm | 31 +++++++++++++++++++++---------- 1 file changed, 21 insertions(+), 10 deletions(-) diff --git a/src/PVE/Network.pm b/src/PVE/Network.pm index c83b1bb..d3eb5e0 100644 --- a/src/PVE/Network.pm +++ b/src/PVE/Network.pm @@ -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; -- 2.30.2