brcmsmac: deactivate ucode sending probe responses

It is possible to configure the ucode to automatically send the probe
responses to the clients after they send a probe request. At least for
WPS the userspace needs to answer the probe requests and we do not know
a way to say to the ucode to just handle the normal probe requests, so
for now no probe requests should be handled by the ucode.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c b/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
index 3c9921c..13c284e 100644 (file)
--- a/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
+++ b/drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c
@@ -552,6 +552,12 @@ brcms_ops_bss_info_changed(struct ieee80211_hw *hw,
                /* Beaconing should be enabled/disabled (beaconing modes) */
                brcms_err(core, "%s: Beacon enabled: %s\n", __func__,
                          info->enable_beacon ? "true" : "false");
+               if (info->enable_beacon &&
+                   hw->wiphy->flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) {
+                       brcms_c_enable_probe_resp(wl->wlc, true);
+               } else {
+                       brcms_c_enable_probe_resp(wl->wlc, false);
+               }
        }
 
        if (changed & BSS_CHANGED_CQM) {
@@ -1047,7 +1053,12 @@ static int ieee_hw_init(struct ieee80211_hw *hw)
        hw->channel_change_time = 7 * 1000;
        hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
 
-       hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
+       /*
+        * deactivate sending probe responses by ucude, because this will
+        * cause problems when WPS is used.
+        *
+        * hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
+        */
 
        hw->rate_control_algorithm = "minstrel_ht";
 

diff --git a/drivers/net/wireless/brcm80211/brcmsmac/main.c b/drivers/net/wireless/brcm80211/brcmsmac/main.c
index 04192ed..63fb9fd 100644 (file)
--- a/drivers/net/wireless/brcm80211/brcmsmac/main.c
+++ b/drivers/net/wireless/brcm80211/brcmsmac/main.c
@@ -7480,6 +7480,17 @@ void brcms_c_set_new_probe_resp(struct brcms_c_info *wlc,
        brcms_c_update_probe_resp(wlc, false);
 }
 
+void brcms_c_enable_probe_resp(struct brcms_c_info *wlc, bool enable)
+{
+       /*
+        * prevent ucode from sending probe responses by setting the timeout
+        * to 1, it can not send it in that time frame.
+        */
+       wlc->prb_resp_timeout = enable ? BRCMS_PRB_RESP_TIMEOUT : 1;
+       brcms_b_write_shm(wlc->hw, M_PRS_MAXTIME, wlc->prb_resp_timeout);
+       /* TODO: if (enable) => also deactivate receiving of probe request */
+}
+
 /* Write ssid into shared memory */
 static void
 brcms_c_shm_ssid_upd(struct brcms_c_info *wlc, struct brcms_bss_cfg *cfg)

diff --git a/drivers/net/wireless/brcm80211/brcmsmac/pub.h b/drivers/net/wireless/brcm80211/brcmsmac/pub.h
index 5e6db62..6fa746e 100644 (file)
--- a/drivers/net/wireless/brcm80211/brcmsmac/pub.h
+++ b/drivers/net/wireless/brcm80211/brcmsmac/pub.h
@@ -338,6 +338,7 @@ extern void brcms_c_set_new_beacon(struct brcms_c_info *wlc,
                                   u16 dtim_period);
 extern void brcms_c_set_new_probe_resp(struct brcms_c_info *wlc,
                                       struct sk_buff *probe_resp);
+extern void brcms_c_enable_probe_resp(struct brcms_c_info *wlc, bool enable);
 extern void brcms_c_set_ssid(struct brcms_c_info *wlc, u8 *ssid,
                             size_t ssid_len);