Document return value of InterfaceController::{add,del}Address

Test: N/A
Bug: 142764715
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I5b7ec514bd29d90815fefc75b216573dbb11df0c

1 files changed, 2 insertions, 0 deletions

diff --git a/server/InterfaceController.cpp b/server/InterfaceController.cpp
index a67b4e1e..755068d8 100644
--- a/server/InterfaceController.cpp
+++ b/server/InterfaceController.cpp
@@ -367,11 +367,13 @@ int InterfaceController::setMtu(const char *interface, const char *mtu)
     return writeValueToPath(sys_net_path, interface, "mtu", mtu);
 }
 
+// Returns zero on success and negative errno on failure.
 int InterfaceController::addAddress(const char *interface,
         const char *addrString, int prefixLength) {
     return ifc_add_address(interface, addrString, prefixLength);
 }
 
+// Returns zero on success and negative errno on failure.
 int InterfaceController::delAddress(const char *interface,
         const char *addrString, int prefixLength) {
     return ifc_del_address(interface, addrString, prefixLength);