tree 9d276efb94dc63f0456c64cd4bfb1f47576cd3ec
parent 98029468a12514b1766863280e719b4fc1747d8f
author Roshan Pius <rpius@google.com> 1549663600 -0800
committer Roshan Pius <rpius@google.com> 1551246747 -0800

WifiServiceImpl: Reject startSoftAp when already tethering

Originally we did not want WifiServiceImpl to make any interface mode
related decisions. ActiveModeWarden handles all such device
capability checks. But, tethering seems to be an exception to that rule,
we don't need to ever support 2 tethering sessions even if the device
can support 2 AP interfaces. Hence, block tethering start if there is
already a session active to make the API more robust to misuse from
clients (Eg: invoking startSoftAp twice without stopSoftAp).

Bug: 110697252
Test: ./frameworks/opt/net/wifi/tests/wifitests/runtests.sh
Test: Manual verification by modifying ACTS test to trigger back to back
startSoftAp (Repro'ed the issue originally & then verified the fix).
Test: Will send for regression tests

Change-Id: If27f9062c14846e0541e9b849e18001f61d34084