tree 809df27c4f19294876b13a9b2583fdddc8e4b79d
parent bd26f23c84c6c3a1179a9bf9cca4b5e2941bf042
author Pierre Imai <imaipi@google.com> 1460947334 +0900
committer Pierre Imai <imaipi@google.com> 1461200844 +0900

Store DNS server count in resolv_cache.

Instead of keeping a sentinel after nameservers[], nsaddrinfo[] and
nstats[], store the server count in the structure, freeing up memory and
eliminating the need to enumerate the server count every time
_resolv_is_nameservers_equal_locked() is invoked.

Also increase MAXNS from 3 to 4.

BUG: 28153323
Change-Id: I11a7257af695157c9e32019cd00c67b535b63c75