[bench/nfvconfig] Added benchmark template for cperf.

src/scripts/cperf/benchmarks/nfvconfig-template

@@ -0,0 +1,23 @@
+#!/bin/bash
+
+# NOTE: Replace <PCIADDR> below with the pci address of an Intel 10G NIC
+# and replace <FIXTURE-[X|Y]> which the fixtures you want to benchmark.
+#
+# There is a reason for this Shell script being so weird
+# (by using `set -e' and `echo $out | ...'):
+#
+# If a benchmark script fails it MUST exit with a non-zero status. Thus
+# we make sure that the status returned reflects the benchmarks results
+# and NOT the commands that extract the desired portion of the benchmarks
+# output. (Last time I checked, even with `set -e ', a plain pipe will
+# exit with status 0 even if one of the commands does not).
+
+set -e
+
+out=$(sudo src/snabb src/designs/bench/nfvconfig <PCIADDR> \
+    src/test_fixtures/nfvconfig/<FIXTURE-X> \
+    src/test_fixtures/nfvconfig/<FIXTURE-Y> \
+    64)
+
+# Extract score from output.
+echo "$out" | grep "score" | cut -f 2