commit 623de6da873ccd9a556d06bfce069a91dc1a02f4
author Matthew Wang <matthewmwang@chromium.org> Wed Dec 19 17:29:26 2018 -0800
committer chrome-bot <chrome-bot@chromium.org> Thu Dec 27 18:35:56 2018 -0800
tree 8c38b2b4b8f5d37fbb57d70f6105279f18e3951b
parent a79b5f773b0ccf9fbf06d7f2bd9d4871312c805a

network_WiFi_RoamFT: Change second AP to use 11n with HT40

This results in the second AP having a much higher estimated
throughput than the first AP, reliably causing a roam.

BUG=chromium:900453
TEST=Ran on a few devices currently failing the autotest with reason
     "Failed to roam" and they pass. Ran on caroline at my desk and
     it still passes.

Change-Id: Ic00c5eef0e6a28ebc4c1e2d519e87e76951cf73a
Reviewed-on: https://chromium-review.googlesource.com/1385527
Commit-Ready: Matthew Wang <matthewmwang@chromium.org>
Tested-by: Matthew Wang <matthewmwang@chromium.org>
Reviewed-by: Kirtika Ruchandani <kirtika@chromium.org>

server/site_tests/network_WiFi_RoamFT/network_WiFi_RoamFT.py

diff --git a/server/site_tests/network_WiFi_RoamFT/network_WiFi_RoamFT.py b/server/site_tests/network_WiFi_RoamFT/network_WiFi_RoamFT.py
index ca52071..fbe4a6f 100644
--- a/server/site_tests/network_WiFi_RoamFT/network_WiFi_RoamFT.py
+++ b/server/site_tests/network_WiFi_RoamFT/network_WiFi_RoamFT.py
@@ -98,8 +98,15 @@
                        r0kh='%s %s %s' % (mac1, id1, key0),
                        r1kh='%s %s %s' % (mac1, mac1, key1),
                        use_bridge=True)
-        router1_conf = hostap_config.HostapConfig(channel=48,
-                       mode=hostap_config.HostapConfig.MODE_11A,
+        n_caps = [hostap_config.HostapConfig.N_CAPABILITY_HT40_PLUS]
+        ac_caps = [hostap_config.HostapConfig.AC_CAPABILITY_SHORT_GI_80]
+        channel_width_80_mhz = hostap_config.HostapConfig.VHT_CHANNEL_WIDTH_80
+        router1_conf = hostap_config.HostapConfig(channel=157,
+                       mode=hostap_config.HostapConfig.MODE_11AC_PURE,
+                       n_capabilities=n_caps,
+                       ac_capabilities=ac_caps,
+                       vht_channel_width=channel_width_80_mhz,
+                       vht_center_channel=155,
                        security_config=self._security_config,
                        bssid=mac1,
                        mdid=mdid,