commit 8887cce0eff50c2cfbd13f1634234f447499ef1b
author Maciej Żenczykowski <maze@google.com> Mon May 04 18:14:59 2020 -0700
committer Maciej Żenczykowski <maze@google.com> Wed May 13 10:01:50 2020 -0700
tree 81c1a2a5b3a791fd664d8ac735eea011707b6bfe
parent 15b21b7e8bc76f8c2abf29d80a7d5ee1738b462d

ebpf tethering - add a map to store data limit, part 1

This just defines the map, but doesn't populate it,
nor does it use the information yet.

Tested:
  $ adb shell ls -l /sys/fs/bpf | egrep limit
  -rw-rw---- 1 root network_stack 0 2020-05-05 02:06 map_offload_tether_limit_map

Bug: 150736748
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I665c14d8a3eeb949d5ae2f8ddb9f590040ddce10
Merged-In: I665c14d8a3eeb949d5ae2f8ddb9f590040ddce10

server/OffloadUtilsTest.cpp

diff --git a/server/OffloadUtilsTest.cpp b/server/OffloadUtilsTest.cpp
index 1a71c98..1760c1d 100644
--- a/server/OffloadUtilsTest.cpp
+++ b/server/OffloadUtilsTest.cpp
@@ -192,6 +192,15 @@
     close(fd);
 }
 
+TEST_F(OffloadUtilsTest, GetTetherLimitMapFd) {
+    SKIP_IF_BPF_NOT_SUPPORTED;
+
+    int fd = getTetherLimitMapFd();
+    ASSERT_GE(fd, 3);  // 0,1,2 - stdin/out/err, thus fd >= 3
+    EXPECT_EQ(FD_CLOEXEC, fcntl(fd, F_GETFD));
+    close(fd);
+}
+
 // The SKIP_IF_BPF_NOT_SUPPORTED macro is effectively a check for 4.9+ kernel
 // combined with a launched on P device.  Ie. it's a test for 4.9-P or better.