Do as in other tests and assume wpan0 if no device is given on the commandline.

Signed-off-by: Stefan Schmidt <ste...@datenfreihafen.org>
---
 tests/listen-packet.c |    3 ++-
 tests/listen.c        |    3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/tests/listen-packet.c b/tests/listen-packet.c
index 20f7da3..e40af81 100644
--- a/tests/listen-packet.c
+++ b/tests/listen-packet.c
@@ -42,6 +42,7 @@ int main(int argc, char **argv) {
        unsigned char buf[256];
        struct sockaddr_ll sa = {};
        struct ifreq req = {};
+       char *iface = argv[1] ?: "wpan0";
 
        int sd = socket(PF_PACKET, (argv[2] && argv[2][0] == 'd') ? SOCK_DGRAM 
: SOCK_RAW , htons(ETH_P_ALL));
        if (sd < 0) {
@@ -49,7 +50,7 @@ int main(int argc, char **argv) {
                return 1;
        }
 
-       strncpy(req.ifr_name, argv[1], IF_NAMESIZE);
+       strncpy(req.ifr_name, iface, IF_NAMESIZE);
        ret = ioctl(sd, SIOCGIFINDEX, &req);
        if (ret < 0)
                perror("ioctl: SIOCGIFINDEX");
diff --git a/tests/listen.c b/tests/listen.c
index f2ec8df..75c320b 100644
--- a/tests/listen.c
+++ b/tests/listen.c
@@ -39,6 +39,7 @@ int main(int argc, char **argv) {
        unsigned char buf[256];
        struct sockaddr_ieee802154 sa = {};
        struct ifreq req = {};
+       char *iface = argv[1] ?: "wpan0";
 
        int sd = socket(PF_IEEE802154, SOCK_RAW, 0);
        if (sd < 0) {
@@ -46,7 +47,7 @@ int main(int argc, char **argv) {
                return 1;
        }
 
-       strncpy(req.ifr_name, argv[1], IFNAMSIZ);
+       strncpy(req.ifr_name, iface, IFNAMSIZ);
        ret = ioctl(sd, SIOCGIFHWADDR, &req);
        if (ret < 0)
                perror("ioctl: SIOCGIFHWADDR");
-- 
1.7.0.4


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