[pve-devel] [PATCH pve-common 1/1] fix #7118: fix bridge port detection when plugging netdev with vlan

[Stefan Hanreich]

When tagging a network device with a VLAN tag, tap_plug checks if the
bridge is vlan-aware and, if it isn't, creates a VLAN subinterface and
a respective bridge for that VLAN for the physical interfaces that are
enslaved on the bridge. The detection of physical interfaces relied on
a regex that only allowed certain prefixes. Since the introduction of
network-interface-pinning, the rules for network interface naming have
been changed, and physical network interfaces are not restricted to
certain prefixes anymore. Therefore, use the newly provided helper
from IPRoute2 that uses `ip link` to obtain the physical bridge ports,
instead of a regex.

Signed-off-by: Stefan Hanreich <s.hanreich at proxmox.com>
---
 src/PVE/Network.pm | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/src/PVE/Network.pm b/src/PVE/Network.pm
index 67c9601..9a8449a 100644
--- a/src/PVE/Network.pm
+++ b/src/PVE/Network.pm
@@ -683,16 +683,7 @@ sub activate_bridge_vlan {
 
     my $bridgevlan = "${bridge}v$tag";
 
-    my @ifaces = ();
-    my $dir = "/sys/class/net/$bridge/brif";
-    PVE::Tools::dir_glob_foreach(
-        $dir,
-        '(((eth|bond)\d+|en[^.]+)(\.\d+)?)',
-        sub {
-            push @ifaces, $_[0];
-        },
-    );
-
+    my @ifaces = get_physical_bridge_ports($bridge);
     die "no physical interface on bridge '$bridge'\n" if scalar(@ifaces) == 0;
 
     lock_network(sub {
@@ -973,6 +964,16 @@ sub is_ovs_bridge {
     die "failed to query OVS to determine type of '$bridge': $res\n";
 }
 
+sub get_physical_bridge_ports {
+    my ($bridge, $ip_links) = @_;
+
+    $ip_links = ip_link_details() if !defined($ip_links);
+
+    return grep {
+        ip_link_is_physical($ip_links->{$_}) && $ip_links->{$_}->{master} eq $bridge
+    } keys $ip_links->%*;
+}
+
 sub ip_link_details {
     my $link_json = '';
 
-- 
2.47.3