blob: 25ba87d8d140ee614253c1ef75921313130c88b2 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
From f4830bed661f4adff51f50a0d37c64ceb748e780 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Date: Mon, 25 Apr 2016 17:10:47 +0200
Subject: [PATCH] nl80211: Try running without mgmt frame subscription (driver
AP SME)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
One of supported code paths already allows this scenario. It is used if
driver doesn't report NL80211_ATTR_DEVICE_AP_SME and doesn't support
monitor interface. In such situation:
1) We don't quit if subscribing for WLAN_FC_STYPE_PROBE_REQ fails
2) We don't try subscribing for WLAN_FC_STYPE_ACTION
3) We fallback to AP SME mode after failing to create monitor interface
4) We don't quit if subscribing for WLAN_FC_STYPE_PROBE_REQ fails
Above scenario is used, e.g., with brcmfmac. As you can see - thanks to
events provided by cfg80211 - it's not really required to receive Probe
Request or action frames.
However, the previous implementation did not allow using hostapd with
drivers that:
1) Report NL80211_ATTR_DEVICE_AP_SME
2) Don't support subscribing for PROBE_REQ and/or ACTION frames
In case of using such a driver hostapd will cancel setup after failing
to subscribe for WLAN_FC_STYPE_ACTION. I noticed it after setting flag
WIPHY_FLAG_HAVE_AP_SME in brcmfmac driver for my experiments.
This patch allows working with such drivers with just a small warning
printed as debug message.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
---
src/drivers/driver_nl80211.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -4108,7 +4108,8 @@ static int nl80211_setup_ap(struct i802_
if (drv->device_ap_sme && !drv->use_monitor)
if (nl80211_mgmt_subscribe_ap_dev_sme(bss))
- return -1;
+ wpa_printf(MSG_DEBUG,
+ "nl80211: Failed to subscribe for mgmt frames from SME driver - trying to run without it");
if (!drv->device_ap_sme && drv->use_monitor &&
nl80211_create_monitor_interface(drv) &&
|
