[pve-devel] [PATCH v2 pve-manager 2/4] fix #5255: node: wol: add optional bind interface
Christian Ebner
c.ebner at proxmox.com
Tue Mar 26 10:16:57 CET 2024
Allows to optionally configure a local interface name to which to
bind to when sending a wake on lan packet to wake a remote node.
Default behaviour remains to send the packet via the interface for
the default gateway.
Signed-off-by: Christian Ebner <c.ebner at proxmox.com>
---
changes since version 1:
- Adapted to use property string
PVE/API2/Nodes.pm | 14 +++++++++++++-
PVE/NodeConfig.pm | 7 +++++++
2 files changed, 20 insertions(+), 1 deletion(-)
diff --git a/PVE/API2/Nodes.pm b/PVE/API2/Nodes.pm
index 6e75cd5f..9ffe7494 100644
--- a/PVE/API2/Nodes.pm
+++ b/PVE/API2/Nodes.pm
@@ -683,9 +683,10 @@ __PACKAGE__->register_method({
my ($param) = @_;
my $node = $param->{node};
+ my $local_node = PVE::INotify::nodename();
die "'$node' is local node, cannot wake my self!\n"
- if $node eq 'localhost' || $node eq PVE::INotify::nodename();
+ if $node eq 'localhost' || $node eq $local_node;
PVE::Cluster::check_node_exists($node);
@@ -696,6 +697,10 @@ __PACKAGE__->register_method({
die "No wake on LAN MAC address defined for '$node'!\n";
}
+ my $local_config = PVE::NodeConfig::load_config($local_node);
+ my $local_wol_config = PVE::NodeConfig::get_wakeonlan_config($local_config);
+ my $bind_iface = $local_wol_config->{'bind-interface'};
+
$mac_addr =~ s/://g;
my $packet = chr(0xff) x 6 . pack('H*', $mac_addr) x 16;
@@ -708,6 +713,13 @@ __PACKAGE__->register_method({
setsockopt($sock, Socket::SOL_SOCKET, Socket::SO_BROADCAST, 1)
|| die "Unable to set socket option: $!\n";
+ if (defined($bind_iface)) {
+ # Null terminated interface name
+ my $bind_iface_raw = pack('Z*', $bind_iface);
+ setsockopt($sock, Socket::SOL_SOCKET, Socket::SO_BINDTODEVICE, $bind_iface_raw)
+ || die "Unable to bind socket to interface '$bind_iface': $!\n";
+ }
+
send($sock, $packet, 0, $to)
|| die "Unable to send packet: $!\n";
diff --git a/PVE/NodeConfig.pm b/PVE/NodeConfig.pm
index a09c9be1..ee316296 100644
--- a/PVE/NodeConfig.pm
+++ b/PVE/NodeConfig.pm
@@ -103,6 +103,13 @@ my $wakeonlan_desc = {
format_description => 'MAC address',
default_key => 1,
},
+ 'bind-interface' => {
+ type => 'string',
+ description => 'Bind to this interface when sending wake on LAN packet',
+ format => 'pve-iface',
+ format_description => 'bind interface',
+ optional => 1,
+ },
};
$confdesc->{wakeonlan} = {
--
2.39.2
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