@@ -127,3 +127,38 @@ def test_tap_offload(uvm_any):
127127 with attempt :
128128 ret = vm .ssh .check_output (f"sync; cat { out_filename } )
129129 assert ret .stdout == message , f"{ ret .stdout = } { ret .stderr = }
130+ 131+ def test_reset (uvm_plain_any ):
132+ """
133+ Verify that we can reset a net device in the guest
134+ """
135+ vm = uvm_plain_any
136+ vm .spawn ()
137+ vm .basic_config ()
138+ 139+ # eth0/virtio1
140+ vm .add_net_iface ()
141+ # eth1/virtio2
142+ vm .add_net_iface ()
143+ guest_ip_eth1 = vm .iface ["eth1" ]["iface" ].guest_ip
144+ 145+ vm .start ()
146+ 147+ # Check eth1
148+ vm .ssh .check_output ("ping -I eth1 192.168.0.1 -c 1 -W 1" )
149+ 150+ # Trigger reset of eth1 in the guest
151+ vm .ssh .check_output ("echo virtio2 > /sys/bus/virtio/devices/virtio2/driver/unbind" )
152+ 153+ exitcode , _ , _ = vm .ssh .run ("ping -I eth1 192.168.0.1 -c 1 -W 1" )
154+ assert exitcode != 0 , "Ping should fail after resetting the net device"
155+ 156+ # Bring eth1 back up
157+ vm .ssh .check_output (f"""
158+ echo virtio2 > /sys/bus/virtio/drivers/virtio_net/bind;
159+ ip addr add { guest_ip_eth1 }
160+ ip link set eth1 up;
161+ ip route add default via 192.168.0.1;
162+ """ )
163+ 164+ vm .ssh .check_output ("ping -I eth1 192.168.0.1 -c 1 -W 1" )
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