Zperf upload multicast always use default interface.
Zperf download multicast cannot receive packets from other than
224.0.0.1 which is default multicast group.
Add zperf upload/download option -I <interface name> for multicast.
So that user can select interface for multicast.
Add join multicast group for zperf download.
Use the "device list" command to get the interface name as
follows:
"- ua (READY)" #uAP interface name
"- ml (READY)" #STA interface name
Multicast traffic commands:
zperf udp upload -a -I ua 224.0.0.2 5001 10 1470 1M
zperf udp download -I ua 5001 224.0.0.3
Signed-off-by: Fengming Ye <frank.ye@nxp.com>
10670b7515