Make TDX accept the same virtio-net parameters as the normal setting

OSDK.toml

@@ -47,30 +47,7 @@ supported_archs = ["x86_64"]
 build.features = ["cvm_guest"]
 boot.method = "grub-qcow2"
 grub.boot_protocol = "linux"
-qemu.args = """\
+qemu.args = "$(./tools/qemu_args.sh tdx)"
-    -name process=tdxvm,debug-threads=on \
-    -m ${MEM:-8G} \
-    -smp ${SMP:-1} \
-    -vga none \
-    -nographic \
-    -monitor pty \
-    -no-hpet \
-    -nodefaults \
-    -bios /usr/share/qemu/OVMF.fd \
-    -object tdx-guest,sept-ve-disable=on,id=tdx,quote-generation-service=vsock:2:4050 \
-    -cpu host,-kvm-steal-time,pmu=off \
-    -machine q35,kernel_irqchip=split,confidential-guest-support=tdx,memory-backend=ram1 \
-    -object memory-backend-memfd-private,id=ram1,size=${MEM:-8G} \
-    -device virtio-net-pci,netdev=mynet0 \
-    -device virtio-keyboard-pci,disable-legacy=on,disable-modern=off \
-    -netdev user,id=mynet0,hostfwd=tcp::10027-:22 \
-    -chardev stdio,id=mux,mux=on,logfile=qemu.log \
-    -device virtio-serial,romfile= \
-    -device virtconsole,chardev=mux \
-    -device isa-debug-exit,iobase=0xf4,iosize=0x04 \
-    -monitor chardev:mux \
-    -serial chardev:mux \
-"""
 
 [scheme."riscv"]
 boot.method = "qemu-direct"

tools/qemu_args.sh

@@ -44,6 +44,36 @@ else
     NETDEV_ARGS="-nic none"
 fi
 
+if [ "$1" = "tdx" ]; then
+    QEMU_ARGS="\
+        -name process=tdxvm,debug-threads=on \
+        -m ${MEM:-8G} \
+        -smp ${SMP:-1} \
+        -vga none \
+        -nographic \
+        -monitor pty \
+        -no-hpet \
+        -nodefaults \
+        -bios /usr/share/qemu/OVMF.fd \
+        -object tdx-guest,sept-ve-disable=on,id=tdx,quote-generation-service=vsock:2:4050 \
+        -cpu host,-kvm-steal-time,pmu=off \
+        -machine q35,kernel_irqchip=split,confidential-guest-support=tdx,memory-backend=ram1 \
+        -object memory-backend-memfd-private,id=ram1,size=${MEM:-8G} \
+        -device virtio-net-pci,netdev=net01,disable-legacy=on,disable-modern=off$VIRTIO_NET_FEATURES \
+        -device virtio-keyboard-pci,disable-legacy=on,disable-modern=off \
+        $NETDEV_ARGS \
+        $QEMU_OPT_ARG_DUMP_PACKETS \
+        -chardev stdio,id=mux,mux=on,logfile=qemu.log \
+        -device virtio-serial,romfile= \
+        -device virtconsole,chardev=mux \
+        -device isa-debug-exit,iobase=0xf4,iosize=0x04 \
+        -monitor chardev:mux \
+        -serial chardev:mux \
+    "
+    echo $QEMU_ARGS
+    exit 0
+fi
+
 COMMON_QEMU_ARGS="\
     -cpu Icelake-Server,+x2apic \
     -smp ${SMP:-1} \