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path: root/drivers/net/wireless/mwifiex/scan.c
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Diffstat (limited to 'drivers/net/wireless/mwifiex/scan.c')
-rw-r--r--drivers/net/wireless/mwifiex/scan.c157
1 files changed, 146 insertions, 11 deletions
diff --git a/drivers/net/wireless/mwifiex/scan.c b/drivers/net/wireless/mwifiex/scan.c
index baf9715dd..278ec477f 100644
--- a/drivers/net/wireless/mwifiex/scan.c
+++ b/drivers/net/wireless/mwifiex/scan.c
@@ -527,7 +527,8 @@ mwifiex_scan_create_channel_list(struct mwifiex_private *priv,
if (ch->flags & IEEE80211_CHAN_NO_IR)
scan_chan_list[chan_idx].chan_scan_mode_bitmap
- |= MWIFIEX_PASSIVE_SCAN;
+ |= (MWIFIEX_PASSIVE_SCAN |
+ MWIFIEX_HIDDEN_SSID_REPORT);
else
scan_chan_list[chan_idx].chan_scan_mode_bitmap
&= ~MWIFIEX_PASSIVE_SCAN;
@@ -823,6 +824,7 @@ mwifiex_config_scan(struct mwifiex_private *priv,
int i;
u8 ssid_filter;
struct mwifiex_ie_types_htcap *ht_cap;
+ struct mwifiex_ie_types_bss_mode *bss_mode;
/* The tlv_buf_len is calculated for each scan command. The TLVs added
in this routine will be preserved since the routine that sends the
@@ -908,6 +910,10 @@ mwifiex_config_scan(struct mwifiex_private *priv,
wildcard_ssid_tlv->max_ssid_length =
IEEE80211_MAX_SSID_LEN;
+ if (!memcmp(user_scan_in->ssid_list[i].ssid,
+ "DIRECT-", 7))
+ wildcard_ssid_tlv->max_ssid_length = 0xfe;
+
memcpy(wildcard_ssid_tlv->ssid,
user_scan_in->ssid_list[i].ssid, ssid_len);
@@ -968,6 +974,15 @@ mwifiex_config_scan(struct mwifiex_private *priv,
else
*max_chan_per_scan = MWIFIEX_DEF_CHANNELS_PER_SCAN_CMD;
+ if (adapter->ext_scan) {
+ bss_mode = (struct mwifiex_ie_types_bss_mode *)tlv_pos;
+ bss_mode->header.type = cpu_to_le16(TLV_TYPE_BSS_MODE);
+ bss_mode->header.len = cpu_to_le16(sizeof(bss_mode->bss_mode));
+ bss_mode->bss_mode = scan_cfg_out->bss_mode;
+ tlv_pos += sizeof(bss_mode->header) +
+ le16_to_cpu(bss_mode->header.len);
+ }
+
/* If the input config or adapter has the number of Probes set,
add tlv */
if (num_probes) {
@@ -1035,7 +1050,8 @@ mwifiex_config_scan(struct mwifiex_private *priv,
if (scan_type == MWIFIEX_SCAN_TYPE_PASSIVE)
(scan_chan_list +
chan_idx)->chan_scan_mode_bitmap
- |= MWIFIEX_PASSIVE_SCAN;
+ |= (MWIFIEX_PASSIVE_SCAN |
+ MWIFIEX_HIDDEN_SSID_REPORT);
else
(scan_chan_list +
chan_idx)->chan_scan_mode_bitmap
@@ -1586,6 +1602,62 @@ int mwifiex_check_network_compatibility(struct mwifiex_private *priv,
return ret;
}
+/* This function checks if SSID string contains all zeroes or length is zero */
+static bool mwifiex_is_hidden_ssid(struct cfg80211_ssid *ssid)
+{
+ int idx;
+
+ for (idx = 0; idx < ssid->ssid_len; idx++) {
+ if (ssid->ssid[idx])
+ return false;
+ }
+
+ return true;
+}
+
+/* This function checks if any hidden SSID found in passive scan channels
+ * and save those channels for specific SSID active scan
+ */
+static int mwifiex_save_hidden_ssid_channels(struct mwifiex_private *priv,
+ struct cfg80211_bss *bss)
+{
+ struct mwifiex_bssdescriptor *bss_desc;
+ int ret;
+ int chid;
+
+ /* Allocate and fill new bss descriptor */
+ bss_desc = kzalloc(sizeof(*bss_desc), GFP_KERNEL);
+ if (!bss_desc)
+ return -ENOMEM;
+
+ ret = mwifiex_fill_new_bss_desc(priv, bss, bss_desc);
+ if (ret)
+ goto done;
+
+ if (mwifiex_is_hidden_ssid(&bss_desc->ssid)) {
+ mwifiex_dbg(priv->adapter, INFO, "found hidden SSID\n");
+ for (chid = 0 ; chid < MWIFIEX_USER_SCAN_CHAN_MAX; chid++) {
+ if (priv->hidden_chan[chid].chan_number ==
+ bss->channel->hw_value)
+ break;
+
+ if (!priv->hidden_chan[chid].chan_number) {
+ priv->hidden_chan[chid].chan_number =
+ bss->channel->hw_value;
+ priv->hidden_chan[chid].radio_type =
+ bss->channel->band;
+ priv->hidden_chan[chid].scan_type =
+ MWIFIEX_SCAN_TYPE_ACTIVE;
+ break;
+ }
+ }
+ }
+
+done:
+ kfree(bss_desc);
+ return 0;
+}
+
static int mwifiex_update_curr_bss_params(struct mwifiex_private *priv,
struct cfg80211_bss *bss)
{
@@ -1775,6 +1847,14 @@ mwifiex_parse_single_response_buf(struct mwifiex_private *priv, u8 **bss_info,
.mac_address, ETH_ALEN))
mwifiex_update_curr_bss_params(priv, bss);
cfg80211_put_bss(priv->wdev.wiphy, bss);
+
+ if ((chan->flags & IEEE80211_CHAN_RADAR) ||
+ (chan->flags & IEEE80211_CHAN_NO_IR)) {
+ mwifiex_dbg(adapter, INFO,
+ "radar or passive channel %d\n",
+ channel);
+ mwifiex_save_hidden_ssid_channels(priv, bss);
+ }
}
} else {
mwifiex_dbg(adapter, WARN, "missing BSS channel IE\n");
@@ -1798,6 +1878,57 @@ static void mwifiex_complete_scan(struct mwifiex_private *priv)
}
}
+/* This function checks if any hidden SSID found in passive scan channels
+ * and do specific SSID active scan for those channels
+ */
+static int
+mwifiex_active_scan_req_for_passive_chan(struct mwifiex_private *priv)
+{
+ int ret;
+ struct mwifiex_adapter *adapter = priv->adapter;
+ u8 id = 0;
+ struct mwifiex_user_scan_cfg *user_scan_cfg;
+
+ if (adapter->active_scan_triggered || !priv->scan_request) {
+ adapter->active_scan_triggered = false;
+ return 0;
+ }
+
+ if (!priv->hidden_chan[0].chan_number) {
+ mwifiex_dbg(adapter, INFO, "No BSS with hidden SSID found on DFS channels\n");
+ return 0;
+ }
+ user_scan_cfg = kzalloc(sizeof(*user_scan_cfg), GFP_KERNEL);
+
+ if (!user_scan_cfg)
+ return -ENOMEM;
+
+ memset(user_scan_cfg, 0, sizeof(*user_scan_cfg));
+
+ for (id = 0; id < MWIFIEX_USER_SCAN_CHAN_MAX; id++) {
+ if (!priv->hidden_chan[id].chan_number)
+ break;
+ memcpy(&user_scan_cfg->chan_list[id],
+ &priv->hidden_chan[id],
+ sizeof(struct mwifiex_user_scan_chan));
+ }
+
+ adapter->active_scan_triggered = true;
+ user_scan_cfg->num_ssids = priv->scan_request->n_ssids;
+ user_scan_cfg->ssid_list = priv->scan_request->ssids;
+
+ ret = mwifiex_scan_networks(priv, user_scan_cfg);
+ kfree(user_scan_cfg);
+
+ memset(&priv->hidden_chan, 0, sizeof(priv->hidden_chan));
+
+ if (ret) {
+ dev_err(priv->adapter->dev, "scan failed: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
static void mwifiex_check_next_scan_command(struct mwifiex_private *priv)
{
struct mwifiex_adapter *adapter = priv->adapter;
@@ -1811,6 +1942,8 @@ static void mwifiex_check_next_scan_command(struct mwifiex_private *priv)
adapter->scan_processing = false;
spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
+ mwifiex_active_scan_req_for_passive_chan(priv);
+
if (!adapter->ext_scan)
mwifiex_complete_scan(priv);
@@ -1837,15 +1970,17 @@ static void mwifiex_check_next_scan_command(struct mwifiex_private *priv)
adapter->scan_processing = false;
spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
- if (priv->scan_request) {
- mwifiex_dbg(adapter, INFO,
- "info: aborting scan\n");
- cfg80211_scan_done(priv->scan_request, 1);
- priv->scan_request = NULL;
- } else {
- priv->scan_aborting = false;
- mwifiex_dbg(adapter, INFO,
- "info: scan already aborted\n");
+ if (!adapter->active_scan_triggered) {
+ if (priv->scan_request) {
+ mwifiex_dbg(adapter, INFO,
+ "info: aborting scan\n");
+ cfg80211_scan_done(priv->scan_request, 1);
+ priv->scan_request = NULL;
+ } else {
+ priv->scan_aborting = false;
+ mwifiex_dbg(adapter, INFO,
+ "info: scan already aborted\n");
+ }
}
} else {
/* Get scan command from scan_pending_q and put to
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-16 18:23:37 +0000