1、Round trip times in the ping command range from millisecond to subtle
2、Add statistics on RTT related min/avg/Max/mdev in ping program
3、The ping command supports ctrl+c interruption operations
Signed-off-by: xuewenliang <xuewenliang@xiaomi.com>
1.Remove void cast for function because many place ignore the returned value witout cast
2.Replace void cast for variable with UNUSED macro
Change-Id: Ie644129a563244a6397036789c4c3ea83c4e9b09
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>