[PULL 18/23] tests/functional/s390x: Add tests for virtio net PCI in test_pxelinux.py

[Eric Farman <farman@linux.ibm.com>]

From: Zhuoying Cai <zycai@linux.ibm.com>

Add test coverage for virtio-net-pci network booting on s390x by
extending the pxelinux functional tests.

This patch adds PCI variants of all existing pxelinux tests to verify
that virtio-net-pci devices work correctly for network booting.

Signed-off-by: Zhuoying Cai <zycai@linux.ibm.com>
Tested-by: Joshua Daley <jdaley@linux.ibm.com>
Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
Reviewed-by: Jared Rossi <jrossi@linux.ibm.com>
Link: https://lore.kernel.org/qemu-devel/20260924222949.147720-9-zycai@linux.ibm.com
Signed-off-by: Eric Farman <farman@linux.ibm.com>
---
 tests/functional/s390x/test_pxelinux.py | 71 ++++++++++++++++++++-----
 1 file changed, 59 insertions(+), 12 deletions(-)

diff --git a/tests/functional/s390x/test_pxelinux.py b/tests/functional/s390x/test_pxelinux.py
index c00cce6a5a..5ce42aa074 100755
--- a/tests/functional/s390x/test_pxelinux.py
+++ b/tests/functional/s390x/test_pxelinux.py
@@ -50,7 +50,8 @@ class S390PxeLinux(QemuSystemTest):
          '/images/kernel.img'),
         '480859574f3f44caa6cd35c62d70e1ac0609134e22ce2a954bbed9b110c06e0b')
 
-    def pxelinux_launch(self, pl_name='default', extra_opts=None):
+    def pxelinux_launch(self, pl_name='default', extra_opts=None,
+                        dev='virtio-net-ccw'):
         '''Create a pxelinux.cfg file in the right location and launch QEMU'''
         self.require_netdev('user')
         self.set_machine('s390-ccw-virtio')
@@ -74,7 +75,7 @@ def pxelinux_launch(self, pl_name='default', extra_opts=None):
         with open(cfg_fname, 'w', encoding='utf-8') as f:
             f.write(PXELINUX_CFG_CONTENTS)
 
-        virtio_net_dev = 'virtio-net-ccw,netdev=n1,bootindex=1'
+        virtio_net_dev = f'{dev},netdev=n1,bootindex=1'
         if extra_opts:
             virtio_net_dev += ',' + extra_opts
 
@@ -85,9 +86,9 @@ def pxelinux_launch(self, pl_name='default', extra_opts=None):
         self.vm.launch()
 
 
-    def test_default(self):
+    def do_test_default(self, dev):
         '''Check whether the guest uses the "default" file name'''
-        self.pxelinux_launch()
+        self.pxelinux_launch(dev=dev)
         # The kernel prints its arguments to the console, so we can use
         # this to check whether the kernel parameters are correctly handled:
         wait_for_console_pattern(self, 'testoption=teststring')
@@ -95,36 +96,82 @@ def test_default(self):
         wait_for_console_pattern(self, 'Unpacking initramfs...')
         wait_for_console_pattern(self, 'Run /init as init process')
 
-    def test_mac(self):
+    def do_test_mac(self, dev):
         '''Check whether the guest uses file name based on its MAC address'''
         self.pxelinux_launch(pl_name='01-02-ca-fe-ba-be-42',
-                             extra_opts='mac=02:ca:fe:ba:be:42,loadparm=3')
+                             extra_opts='mac=02:ca:fe:ba:be:42,loadparm=3',
+                             dev=dev)
         wait_for_console_pattern(self, 'Linux version 5.3.7-301.fc31.s390x')
 
-    def test_uuid(self):
+    def do_test_uuid(self, dev):
         '''Check whether the guest uses file name based on its UUID'''
         # Also add a non-bootable disk to check the fallback to network boot:
         self.vm.add_args('-blockdev', 'null-co,size=65536,node-name=d1',
                          '-device', 'virtio-blk,drive=d1,bootindex=0,loadparm=1',
                          '-uuid', '550e8400-e29b-11d4-a716-446655441234')
-        self.pxelinux_launch(pl_name='550e8400-e29b-11d4-a716-446655441234')
+        self.pxelinux_launch(pl_name='550e8400-e29b-11d4-a716-446655441234',
+                             dev=dev)
         wait_for_console_pattern(self, 'Debian 4.19.146-1 (2020-09-17)')
 
-    def test_ip(self):
+    def do_test_ip(self, dev):
         '''Check whether the guest uses file name based on its IP address'''
         self.vm.add_args('-M', 'loadparm=3')
-        self.pxelinux_launch(pl_name='0A00020F')
+        self.pxelinux_launch(pl_name='0A00020F', dev=dev)
         wait_for_console_pattern(self, 'Linux version 5.3.7-301.fc31.s390x')
 
-    def test_menu(self):
+    def do_test_menu(self, dev):
         '''Check whether the boot menu works for pxelinux.cfg booting'''
         self.vm.add_args('-boot', 'menu=on,splash-time=10')
-        self.pxelinux_launch(pl_name='0A00')
+        self.pxelinux_launch(pl_name='0A00', dev=dev)
         wait_for_console_pattern(self, '[1] Nonexisting')
         wait_for_console_pattern(self, '[2] Debian')
         wait_for_console_pattern(self, '[3] Fedora')
         wait_for_console_pattern(self, 'Debian 4.19.146-1 (2020-09-17)')
 
+    def test_default_ccw(self):
+        '''pxelinux.cfg "default" lookup via virtio-net-ccw'''
+        self.do_test_default('virtio-net-ccw')
+
+    def test_default_pci(self):
+        '''pxelinux.cfg "default" lookup via virtio-net-pci'''
+        self.require_device('virtio-net-pci')
+        self.do_test_default('virtio-net-pci')
+
+    def test_mac_ccw(self):
+        '''pxelinux.cfg MAC-address-based file lookup via virtio-net-ccw'''
+        self.do_test_mac('virtio-net-ccw')
+
+    def test_mac_pci(self):
+        '''pxelinux.cfg MAC-address-based file lookup via virtio-net-pci'''
+        self.require_device('virtio-net-pci')
+        self.do_test_mac('virtio-net-pci')
+
+    def test_uuid_ccw(self):
+        '''pxelinux.cfg UUID-based file lookup via virtio-net-ccw'''
+        self.do_test_uuid('virtio-net-ccw')
+
+    def test_uuid_pci(self):
+        '''pxelinux.cfg UUID-based file lookup via virtio-net-pci'''
+        self.require_device('virtio-net-pci')
+        self.do_test_uuid('virtio-net-pci')
+
+    def test_ip_ccw(self):
+        '''pxelinux.cfg IP-address-based file lookup via virtio-net-ccw'''
+        self.do_test_ip('virtio-net-ccw')
+
+    def test_ip_pci(self):
+        '''pxelinux.cfg IP-address-based file lookup via virtio-net-pci'''
+        self.require_device('virtio-net-pci')
+        self.do_test_ip('virtio-net-pci')
+
+    def test_menu_ccw(self):
+        '''pxelinux.cfg interactive boot menu via virtio-net-ccw'''
+        self.do_test_menu('virtio-net-ccw')
+
+    def test_menu_pci(self):
+        '''pxelinux.cfg interactive boot menu via virtio-net-pci'''
+        self.require_device('virtio-net-pci')
+        self.do_test_menu('virtio-net-pci')
 
 if __name__ == '__main__':
     QemuSystemTest.main()
-- 
2.55.0