[pve-devel] [PATCH qemu-server v3 03/13] PCI: refactor print_pci_device

[Dominik Csapak <d.csapak@proxmox.com>]

into a private sub. This makes the 'print_hostpci_devices' function more
easier to read

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
---
 PVE/QemuServer/PCI.pm | 57 +++++++++++++++++++++++++------------------
 1 file changed, 33 insertions(+), 24 deletions(-)

diff --git a/PVE/QemuServer/PCI.pm b/PVE/QemuServer/PCI.pm
index 1b82aca..7406246 100644
--- a/PVE/QemuServer/PCI.pm
+++ b/PVE/QemuServer/PCI.pm
@@ -393,6 +393,29 @@ sub parse_hostpci {
     return $res;
 }
 
+my $print_pci_device = sub {
+    my ($device, $id, $hostdevice, $pciaddr, $xvga, $bootindex, $function) = @_;
+
+    my $devicestr = "vfio-pci,$hostdevice";
+
+    my $mf_addr = defined($function) ? ".$function" : '';
+
+    $devicestr .= ",id=${id}${mf_addr}${pciaddr}${mf_addr}";
+
+    if (!defined($function) || $function == 0) {
+	$devicestr .= ',rombar=0' if defined($device->{rombar}) && !$device->{rombar};
+	$devicestr .= "$xvga";
+	$devicestr .= ",multifunction=on" if defined($function);
+	$devicestr .= ",romfile=/usr/share/kvm/$device->{romfile}" if $device->{romfile};
+	$devicestr .= ",bootindex=$bootindex" if defined($bootindex);
+	for my $option (qw(vendor-id device-id sub-vendor-id sub-device-id)) {
+	    $devicestr .= ",x-pci-$option=$device->{$option}" if $device->{$option};
+	}
+    }
+
+    return $devicestr;
+};
+
 sub print_hostpci_devices {
     my ($vmid, $conf, $devices, $vga, $winversion, $q35, $bridges, $arch, $machine_type, $bootorder) = @_;
 
@@ -457,37 +480,23 @@ sub print_hostpci_devices {
 	    $gpu_passthrough = 1;
 	}
 
-	my $sysfspath;
-	if ($d->{mdev} && scalar(@$pcidevices) == 1) {
+	my $bootindex = $bootorder->{$id};
+
+	if ($d->{mdev} && !$multifunction) {
 	    my $uuid = generate_mdev_uuid($vmid, $i);
-	    $sysfspath = "/sys/bus/mdev/devices/$uuid";
+	    my $sysfspath = "sysfsdev=/sys/bus/mdev/devices/$uuid";
+	    my $devicestr = $print_pci_device->($d, $id, $sysfspath, $pciaddr, $xvga, $bootindex);
+	    push @$devices, '-device', $devicestr;
+	    next;
 	} elsif ($d->{mdev}) {
 	    warn "ignoring mediated device '$id' with multifunction device\n";
 	}
 
 	my $j = 0;
 	foreach my $pcidevice (@$pcidevices) {
-	    my $devicestr = "vfio-pci";
-
-	    if ($sysfspath) {
-		$devicestr .= ",sysfsdev=$sysfspath";
-	    } else {
-		$devicestr .= ",host=$pcidevice->{id}";
-	    }
-
-	    my $mf_addr = $multifunction ? ".$j" : '';
-	    $devicestr .= ",id=${id}${mf_addr}${pciaddr}${mf_addr}";
-
-	    if ($j == 0) {
-		$devicestr .= ',rombar=0' if defined($d->{rombar}) && !$d->{rombar};
-		$devicestr .= "$xvga";
-		$devicestr .= ",multifunction=on" if $multifunction;
-		$devicestr .= ",romfile=/usr/share/kvm/$d->{romfile}" if $d->{romfile};
-		$devicestr .= ",bootindex=$bootorder->{$id}" if $bootorder->{$id};
-		for my $option (qw(vendor-id device-id sub-vendor-id sub-device-id)) {
-		    $devicestr .= ",x-pci-$option=$d->{$option}" if $d->{$option};
-		}
-	    }
+	    my $host =  "host=$pcidevice->{id}";
+	    my $func = $multifunction ? $j : undef;
+	    my $devicestr = $print_pci_device->($d, $id, $host, $pciaddr, $xvga, $bootindex, $func);
 
 	    push @$devices, '-device', $devicestr;
 	    $j++;
-- 
2.30.2