Detect mounts by mount root, wait for the touchscreen, and default to eth0/eth1

main.go

@@ -627,8 +627,10 @@ type config struct {
 
 func main() {
 	var (
-		aName    = flag.String("a", "", "first interface")
-		bName    = flag.String("b", "", "second interface")
+		// The names the kernel gives the only two ports built into it, since as
+		// PID 1 there is no udev to rename them and no command line to pass.
+		aName    = flag.String("a", "eth0", "first interface")
+		bName    = flag.String("b", "eth1", "second interface")
 		sizesArg = flag.String("sizes", "64,128,256,512,1024,1280,1514", "frame sizes in bytes, excluding FCS, cycled per packet")
 		streams  = flag.Int("streams", 7, "independent streams per direction, capped by rx rings; each gets its own ethertype, steered by a flow rule to its own rx queue")
 		batch    = flag.Int("batch", 64, "frames per sendmmsg/recvmmsg call")
@@ -659,15 +661,12 @@ const (
 func run(aName, bName, sizesArg string,
 	nStreams, batch int, nsPerM float64) error {
 
-	if aName == "" || bName == "" {
-		return fmt.Errorf("both -a and -b are required")
-	}
 	sizes, err := parseSizes(sizesArg)
 	if err != nil {
 		return err
 	}
 
-	if err := reportChecks("MOUNTS", mountFilesystems()); err != nil {
+	if err := reportChecks("BOOT", bootstrap()); err != nil {
 		return err
 	}