devtools: allow misc options in null test

In order to ease basic testing with customized options,
EAL and testpmd options can be added as third and fourth arguments
of the "null PMD" script.

Also, the first argument becomes more flexible by accepting
the testpmd path as an alternative to the build directory.

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>

diff --git a/devtools/test-null.sh b/devtools/test-null.sh
index 73bbded..9f9a459 100755 (executable)
--- a/devtools/test-null.sh
+++ b/devtools/test-null.sh
@@ -5,10 +5,13 @@
 
 # Run a quick testpmd forwarding with null PMD without hugepage
 
-build=${1:-build}
+build=${1:-build} # first argument can be the build directory
+testpmd=$1 # or first argument can be the testpmd path
 coremask=${2:-3} # default using cores 0 and 1
+eal_options=$3
+testpmd_options=$4
 
-testpmd=$build/app/dpdk-testpmd
+[ -f "$testpmd" ] || testpmd=$build/app/dpdk-testpmd
 [ -f "$testpmd" ] || testpmd=$build/app/testpmd
 if [ ! -f "$testpmd" ] ; then
        echo 'ERROR: testpmd cannot be found' >&2
@@ -23,5 +26,5 @@ fi
 
 (sleep 1 && echo stop) |
 $testpmd -c $coremask --no-huge -m 150 \
-       $libs --vdev net_null1 --vdev net_null2 -- \
-       --no-mlockall --total-num-mbufs=2048 -ia
+       $libs --vdev net_null1 --vdev net_null2 $eal_options -- \
+       --no-mlockall --total-num-mbufs=2048 $testpmd_options -ia