selftests: rtnetlink: use dummydev as a test device

We really shouldn't mess with local system settings, so let's
use the already created dummy device instead for ipsec testing.
Oh, and let's put the temp file into a proper directory.

Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/tools/testing/selftests/net/rtnetlink.sh b/tools/testing/selftests/net/rtnetlink.sh
index a80a489..d92905f 100755 (executable)
--- a/tools/testing/selftests/net/rtnetlink.sh
+++ b/tools/testing/selftests/net/rtnetlink.sh
@@ -526,21 +526,19 @@ kci_test_macsec()
 kci_test_ipsec()
 {
        ret=0
-
-       # find an ip address on this machine and make up a destination
-       srcip=`ip -o addr | awk '/inet / { print $4; }' | grep -v "^127" | head -1 | cut -f1 -d/`
-       net=`echo $srcip | cut -f1-3 -d.`
-       base=`echo $srcip | cut -f4 -d.`
-       dstip="$net."`expr $base + 1`
-
        algo="aead rfc4106(gcm(aes)) 0x3132333435363738393031323334353664636261 128"
+       srcip=192.168.123.1
+       dstip=192.168.123.2
+       spi=7
+
+       ip addr add $srcip dev $devdummy
 
        # flush to be sure there's nothing configured
        ip x s flush ; ip x p flush
        check_err $?
 
        # start the monitor in the background
-       tmpfile=`mktemp ipsectestXXX`
+       tmpfile=`mktemp /var/run/ipsectestXXX`
        mpid=`(ip x m > $tmpfile & echo $!) 2>/dev/null`
        sleep 0.2
 
@@ -604,6 +602,7 @@ kci_test_ipsec()
        check_err $?
        ip x p flush
        check_err $?
+       ip addr del $srcip/32 dev $devdummy
 
        if [ $ret -ne 0 ]; then
                echo "FAIL: ipsec"