tree 6389a01068306eb16a281fc3ae8234f76f89bfcf
parent ad7f69d25e60ff22c0041925b869b80eb17e9adc
author meijian <meijian@xiaomi.com> 1708518726 +0800
committer Petro Karashchenko <petro.karashchenko@gmail.com> 1713819819 +0200

[ping] fix ping early return when ping is interrupted by ifdown and poll return

During a long ping, the tester will repeatedly switch the dev interface on and off.
When the interface is down and ping is in poll sem_wait state,ifdown will trigger event of poll and post sem.
The poll will return and revent is 0x18 POLLHUP | POLLERR.Then recvfrom will process and return error to stop ping.
if ((flags & NETDEV_DOWN) != 0)
{
  eventset |= (POLLHUP | POLLERR);
}

Signed-off-by: meijian <meijian@xiaomi.com>