tests: Redirect tcpdump output to a file

Signed-hostap: Jouni Malinen <j@w1.fi>

tests/hwsim/start-p2p-concurrent.sh

@@ -20,7 +20,7 @@ mkdir -p $DIR/logs
 DATE=`date +%s`
 sudo ifconfig hwsim0 up
 sudo $WLANTEST -i hwsim0 -c -d > $DIR/logs/$DATE-hwsim0 &
-sudo tcpdump -ni hwsim0 -s 2500 -w $DIR/logs/$DATE-hwsim0.dump &
+sudo tcpdump -ni hwsim0 -s 2500 -w $DIR/logs/$DATE-hwsim0.dump > $DIR/logs/$DATE-tcpdump 2>&1 &
 if [ "x$VALGRIND" = "xy" ]; then
     for i in 0 1 2; do
 	sudo valgrind --log-file=$DIR/logs/$DATE-valgrind-wlan$i $WPAS -g /tmp/wpas-wlan$i -Gadmin -Dnl80211 -iwlan$i -c $DIR/p2p$i.conf -N -Dnl80211 -ista$i -c $DIR/sta-dummy.conf -ddKt > $DIR/logs/$DATE-log$i &

tests/hwsim/start.sh

@@ -17,7 +17,7 @@ mkdir -p $DIR/logs
 DATE=`date +%s`
 sudo ifconfig hwsim0 up
 sudo $WLANTEST -i hwsim0 -c -d > $DIR/logs/$DATE-hwsim0 &
-sudo tcpdump -ni hwsim0 -s 2500 -w $DIR/logs/$DATE-hwsim0.dump &
+sudo tcpdump -ni hwsim0 -s 2500 -w $DIR/logs/$DATE-hwsim0.dump > $DIR/logs/$DATE-tcpdump 2>&1 &
 if [ "x$VALGRIND" = "xy" ]; then
     for i in 0 1 2; do
 	chmod a+rx $WPAS