uefi-test-runner: SNP: PXE feature gate

Author: phip1611

uefi-test-runner/src/proto/network/mod.rs

@@ -5,6 +5,9 @@ pub fn test() {
 
     http::test();
     pxe::test();
+    // Currently, we are in the unfortunate situation that the SNP test
+    // depends on the PXE test, as it assigns an IPv4 address to the
+    // interface via DHCP.
     snp::test();
 }
 

uefi-test-runner/src/proto/network/snp.rs

@@ -7,6 +7,11 @@ use uefi::proto::network::snp::{InterruptStatus, ReceiveFlags, SimpleNetwork};
 use uefi::{Status, boot};
 
 pub fn test() {
+    // This test currently depends on the PXE test running first.
+    if cfg!(not(feature = "pxe")) {
+        return;
+    }
+
     info!("Testing the simple network protocol");
 
     let handles = boot::find_handles::<SimpleNetwork>().unwrap_or_default();