Cumulative patch from commit b2b688d18d40cd667d0faa149b4a7172166b3bd4
b2b688d P2P: Fix crash when failed to create GO interface
6197169 WPS NFC: Fix build without CONFIG_AP=y
e1ae5d7 SAE: Fix build without CONFIG_AP=y
813e7b3 P2P: Remove group from timeout on PSK failure
5bf9a6c P2P: Add event messages for possible PSK failures on P2P groups
eac8dab P2P: Document per-client keys and p2p_remove_client
43c693c P2P: Do not store duplicate PSK entries for the same device
f2c5660 P2P: Add a command for removing a client from all groups
01a57fe P2P: Maintain list of per-client PSKs for persistent groups
759fd76 P2P: Select PSK based on Device Address instead of Interface Address
94ddef3 P2P: Make peer's P2P Device Address available to authenticator
52177fb P2P: Store P2P Device Address in per-device PSK records
05766ed P2P: Allow per-device PSK to be assigned
698e921 wpa_cli: Add tab completion for p2p_set field values
0b5fb86 P2P: Stop listen state when listen-only duration is over
02a3e5c wpa_cli: Allow first DISCONNECTED event to be reported
cdf8bfa Disallow WEP configuration in WPA network
731ef43 D-Bus: Fix per-iface object unregistration on not existing objects
447969e D-Bus: Do not send network notification for all P2P groups
eb32460 Fix switching from EAP-SIM to EAP-AKA/AKA'
f2b3f4d P2P: Allow P2P functionality to be disabled per interface
50f4f2a hostapd: Add Automatic Channel Selection (ACS) support
43ee470 P2P: Immediate group removal in GC in case of deauthentication
fcf2052 Fix MNC length for Swisscom SIM cards
Bug: 10606228, 10513949
Change-Id: I63ba0e2ab4fa76e6afa7a34be42e8e847e1511b0
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
diff --git a/hostapd/Android.mk b/hostapd/Android.mk
index 1054dc0..695e99c 100644
--- a/hostapd/Android.mk
+++ b/hostapd/Android.mk
@@ -884,6 +884,12 @@
OBJS_c += src/utils/edit_simple.c
endif
+ifdef CONFIG_ACS
+L_CFLAGS += -DCONFIG_ACS
+OBJS += src/ap/acs.c
+LIBS += -lm
+endif
+
########################
include $(CLEAR_VARS)
diff --git a/hostapd/Makefile b/hostapd/Makefile
index a30a244..fda4e4e 100644
--- a/hostapd/Makefile
+++ b/hostapd/Makefile
@@ -817,6 +817,12 @@
OBJS_c += ../src/utils/edit_simple.o
endif
+ifdef CONFIG_ACS
+CFLAGS += -DCONFIG_ACS
+OBJS += ../src/ap/acs.o
+LIBS += -lm
+endif
+
ifdef CONFIG_NO_STDOUT_DEBUG
CFLAGS += -DCONFIG_NO_STDOUT_DEBUG
endif
diff --git a/hostapd/config_file.c b/hostapd/config_file.c
index e9d324f..0b4fd77 100644
--- a/hostapd/config_file.c
+++ b/hostapd/config_file.c
@@ -1104,6 +1104,24 @@
return -1;
}
+ if (bss->wpa) {
+ int wep, i;
+
+ wep = bss->default_wep_key_len > 0 ||
+ bss->individual_wep_key_len > 0;
+ for (i = 0; i < NUM_WEP_KEYS; i++) {
+ if (bss->ssid.wep.keys_set) {
+ wep = 1;
+ break;
+ }
+ }
+
+ if (wep) {
+ wpa_printf(MSG_ERROR, "WEP configuration in a WPA network is not supported");
+ return -1;
+ }
+ }
+
if (bss->wpa && bss->wpa_psk_radius != PSK_RADIUS_IGNORED &&
bss->macaddr_acl != USE_EXTERNAL_RADIUS_AUTH) {
wpa_printf(MSG_ERROR, "WPA-PSK using RADIUS enabled, but no "
@@ -2311,7 +2329,15 @@
errors++;
}
} else if (os_strcmp(buf, "channel") == 0) {
- conf->channel = atoi(pos);
+ if (os_strcmp(pos, "acs_survey") == 0) {
+#ifndef CONFIG_ACS
+ wpa_printf(MSG_ERROR, "Line %d: tries to enable ACS but CONFIG_ACS disabled",
+ line);
+ errors++;
+#endif /* CONFIG_ACS */
+ conf->channel = 0;
+ } else
+ conf->channel = atoi(pos);
} else if (os_strcmp(buf, "beacon_int") == 0) {
int val = atoi(pos);
/* MIB defines range as 1..65535, but very small values
@@ -2326,6 +2352,16 @@
errors++;
} else
conf->beacon_int = val;
+#ifdef CONFIG_ACS
+ } else if (os_strcmp(buf, "acs_num_scans") == 0) {
+ int val = atoi(pos);
+ if (val <= 0 || val > 100) {
+ wpa_printf(MSG_ERROR, "Line %d: invalid acs_num_scans %d (expected 1..100)",
+ line, val);
+ errors++;
+ } else
+ conf->acs_num_scans = val;
+#endif /* CONFIG_ACS */
} else if (os_strcmp(buf, "dtim_period") == 0) {
bss->dtim_period = atoi(pos);
if (bss->dtim_period < 1 || bss->dtim_period > 255) {
diff --git a/hostapd/defconfig b/hostapd/defconfig
index c288f46..2dd6fc8 100644
--- a/hostapd/defconfig
+++ b/hostapd/defconfig
@@ -278,3 +278,27 @@
# certain percentage of probe requests or auth/(re)assoc frames.
#
#CONFIG_TESTING_OPTIONS=y
+
+# Automatic Channel Selection
+# This will allow hostapd to pick the channel automatically when channel is set
+# to "acs_survey" or "0". Eventually, other ACS algorithms can be added in
+# similar way.
+#
+# Automatic selection is currently only done through initialization, later on
+# we hope to do background checks to keep us moving to more ideal channels as
+# time goes by. ACS is currently only supported through the nl80211 driver and
+# your driver must have survey dump capability that is filled by the driver
+# during scanning.
+#
+# You can customize the ACS survey algorithm with the hostapd.conf variable
+# acs_num_scans.
+#
+# Supported ACS drivers:
+# * ath9k
+# * ath5k
+# * ath10k
+#
+# For more details refer to:
+# http://wireless.kernel.org/en/users/Documentation/acs
+#
+#CONFIG_ACS=y
diff --git a/hostapd/hostapd.conf b/hostapd/hostapd.conf
index c46dff5..45897ed 100644
--- a/hostapd/hostapd.conf
+++ b/hostapd/hostapd.conf
@@ -121,8 +121,28 @@
# (default: 0, i.e., not set)
# Please note that some drivers do not use this value from hostapd and the
# channel will need to be configured separately with iwconfig.
+#
+# If CONFIG_ACS build option is enabled, the channel can be selected
+# automatically at run time by setting channel=acs_survey or channel=0, both of
+# which will enable the ACS survey based algorithm.
channel=1
+# ACS tuning - Automatic Channel Selection
+# See: http://wireless.kernel.org/en/users/Documentation/acs
+#
+# You can customize the ACS survey algorithm with following variables:
+#
+# acs_num_scans requirement is 1..100 - number of scans to be performed that
+# are used to trigger survey data gathering of an underlying device driver.
+# Scans are passive and typically take a little over 100ms (depending on the
+# driver) on each available channel for given hw_mode. Increasing this value
+# means sacrificing startup time and gathering more data wrt channel
+# interference that may help choosing a better channel. This can also help fine
+# tune the ACS scan time in case a driver has different scan dwell times.
+#
+# Defaults:
+#acs_num_scans=5
+
# Beacon interval in kus (1.024 ms) (default: 100; range 15..65535)
beacon_int=100