[PATCH pve-manager v2] fix #7187: report: add ethtool output for physical interfaces

[Erik Fastermann <e.fastermann@proxmox.com>]

Adding ethtool output to pvereport provides visibility into actual and
supported NIC link speeds, making it much easier to diagnose network
performance issues, negotiation failures, and configuration mismatches.
It also reduces support back-and-forth.

Signed-off-by: Erik Fastermann <e.fastermann@proxmox.com>
---
 PVE/Report.pm | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/PVE/Report.pm b/PVE/Report.pm
index 29433d4a..760ad905 100644
--- a/PVE/Report.pm
+++ b/PVE/Report.pm
@@ -3,6 +3,7 @@ package PVE::Report;
 use strict;
 use warnings;
 
+use PVE::IPRoute2;
 use PVE::Tools;
 
 # output the content of all the files of a directory
@@ -142,6 +143,21 @@ my $init_report_cmds = sub {
         },
     };
 
+    eval {
+        my $interfaces = PVE::IPRoute2::ip_link_details();
+
+        for my $iface (sort keys %{$interfaces}) {
+            if (PVE::IPRoute2::ip_link_is_physical($interfaces->{$iface})) {
+                push @{ $report_def->{network}->{cmds} },
+                    "ethtool " . PVE::Tools::shellquote($iface);
+            }
+        }
+    };
+
+    if ($@) {
+        print STDERR "building ethtool commands failed: $@";
+    }
+
     if (cmd_exists('zfs')) {
         push @{ $report_def->{volumes}->{cmds} },
             'zpool status',
-- 
2.47.3