brcmfmac: setup passive scan if requested by user-space

commit 35f62727df0ed8e5e4857e162d94fd46d861f1cf upstream.

The driver was not properly configuring firmware with regard to the
type of scan. It always performed an active scan even when user-space
was requesting for passive scan, ie. the scan request was done without
any SSIDs specified.

Reported-by: Huang, Jiangyang <Jiangyang.Huang@itron.com>
Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c
index da5826d..f18491c 100644 (file)
--- a/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c
@@ -876,7 +876,7 @@ static void brcmf_escan_prep(struct brcmf_cfg80211_info *cfg,
 
        eth_broadcast_addr(params_le->bssid);
        params_le->bss_type = DOT11_BSSTYPE_ANY;
-       params_le->scan_type = 0;
+       params_le->scan_type = BRCMF_SCANTYPE_ACTIVE;
        params_le->channel_num = 0;
        params_le->nprobes = cpu_to_le32(-1);
        params_le->active_time = cpu_to_le32(-1);
@@ -884,12 +884,9 @@ static void brcmf_escan_prep(struct brcmf_cfg80211_info *cfg,
        params_le->home_time = cpu_to_le32(-1);
        memset(&params_le->ssid_le, 0, sizeof(params_le->ssid_le));
 
-       /* if request is null exit so it will be all channel broadcast scan */
-       if (!request)
-               return;
-
        n_ssids = request->n_ssids;
        n_channels = request->n_channels;
+
        /* Copy channel array if applicable */
        brcmf_dbg(SCAN, "### List of channelspecs to scan ### %d\n",
                  n_channels);
@@ -926,16 +923,8 @@ static void brcmf_escan_prep(struct brcmf_cfg80211_info *cfg,
                        ptr += sizeof(ssid_le);
                }
        } else {
-               brcmf_dbg(SCAN, "Broadcast scan %p\n", request->ssids);
-               if ((request->ssids) && request->ssids->ssid_len) {
-                       brcmf_dbg(SCAN, "SSID %s len=%d\n",
-                                 params_le->ssid_le.SSID,
-                                 request->ssids->ssid_len);
-                       params_le->ssid_le.SSID_len =
-                               cpu_to_le32(request->ssids->ssid_len);
-                       memcpy(&params_le->ssid_le.SSID, request->ssids->ssid,
-                               request->ssids->ssid_len);
-               }
+               brcmf_dbg(SCAN, "Performing passive scan\n");
+               params_le->scan_type = BRCMF_SCANTYPE_PASSIVE;
        }
        /* Adding mask to channel numbers */
        params_le->channel_num =

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/fwil_types.h b/drivers/net/wireless/brcm80211/brcmfmac/fwil_types.h
index daa427b..4320c4c 100644 (file)
--- a/drivers/net/wireless/brcm80211/brcmfmac/fwil_types.h
+++ b/drivers/net/wireless/brcm80211/brcmfmac/fwil_types.h
@@ -45,6 +45,11 @@
 #define BRCMF_SCAN_PARAMS_COUNT_MASK   0x0000ffff
 #define BRCMF_SCAN_PARAMS_NSSID_SHIFT  16
 
+/* scan type definitions */
+#define BRCMF_SCANTYPE_DEFAULT         0xFF
+#define BRCMF_SCANTYPE_ACTIVE          0
+#define BRCMF_SCANTYPE_PASSIVE         1
+
 /* primary (ie tx) key */
 #define BRCMF_PRIMARY_KEY              (1 << 1)
 #define DOT11_BSSTYPE_ANY              2