iwlagn: move scan code to scan file
Since the driver split there's no longer a need to have the scan code scattered across multiple files, so move it all back to iwl-scan.c Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
John W. Linville
Родитель
ba4a14e102
Коммит
6e809a16d9
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@ -190,433 +190,6 @@ int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band)
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return -1;
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return -1;
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}
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}
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static int iwl_get_single_channel_for_scan(struct iwl_priv *priv,
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struct ieee80211_vif *vif,
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enum ieee80211_band band,
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struct iwl_scan_channel *scan_ch)
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{
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const struct ieee80211_supported_band *sband;
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u16 passive_dwell = 0;
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u16 active_dwell = 0;
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int added = 0;
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u16 channel = 0;
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sband = iwl_get_hw_mode(priv, band);
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if (!sband) {
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IWL_ERR(priv, "invalid band\n");
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return added;
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}
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active_dwell = iwl_get_active_dwell_time(priv, band, 0);
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passive_dwell = iwl_get_passive_dwell_time(priv, band, vif);
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if (passive_dwell <= active_dwell)
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passive_dwell = active_dwell + 1;
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channel = iwl_get_single_channel_number(priv, band);
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if (channel) {
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scan_ch->channel = cpu_to_le16(channel);
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scan_ch->type = SCAN_CHANNEL_TYPE_PASSIVE;
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scan_ch->active_dwell = cpu_to_le16(active_dwell);
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scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
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/* Set txpower levels to defaults */
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scan_ch->dsp_atten = 110;
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if (band == IEEE80211_BAND_5GHZ)
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scan_ch->tx_gain = ((1 << 5) | (3 << 3)) | 3;
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else
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scan_ch->tx_gain = ((1 << 5) | (5 << 3));
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added++;
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} else
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IWL_ERR(priv, "no valid channel found\n");
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return added;
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}
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static int iwl_get_channels_for_scan(struct iwl_priv *priv,
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struct ieee80211_vif *vif,
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enum ieee80211_band band,
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u8 is_active, u8 n_probes,
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struct iwl_scan_channel *scan_ch)
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{
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struct ieee80211_channel *chan;
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const struct ieee80211_supported_band *sband;
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const struct iwl_channel_info *ch_info;
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u16 passive_dwell = 0;
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u16 active_dwell = 0;
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int added, i;
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u16 channel;
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sband = iwl_get_hw_mode(priv, band);
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if (!sband)
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return 0;
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active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
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passive_dwell = iwl_get_passive_dwell_time(priv, band, vif);
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if (passive_dwell <= active_dwell)
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passive_dwell = active_dwell + 1;
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for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) {
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chan = priv->scan_request->channels[i];
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if (chan->band != band)
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continue;
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channel = chan->hw_value;
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scan_ch->channel = cpu_to_le16(channel);
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ch_info = iwl_get_channel_info(priv, band, channel);
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if (!is_channel_valid(ch_info)) {
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IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
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channel);
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continue;
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}
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if (!is_active || is_channel_passive(ch_info) ||
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(chan->flags & IEEE80211_CHAN_PASSIVE_SCAN))
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scan_ch->type = SCAN_CHANNEL_TYPE_PASSIVE;
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else
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scan_ch->type = SCAN_CHANNEL_TYPE_ACTIVE;
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if (n_probes)
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scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
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scan_ch->active_dwell = cpu_to_le16(active_dwell);
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scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
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/* Set txpower levels to defaults */
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scan_ch->dsp_atten = 110;
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/* NOTE: if we were doing 6Mb OFDM for scans we'd use
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* power level:
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* scan_ch->tx_gain = ((1 << 5) | (2 << 3)) | 3;
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*/
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if (band == IEEE80211_BAND_5GHZ)
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scan_ch->tx_gain = ((1 << 5) | (3 << 3)) | 3;
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else
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scan_ch->tx_gain = ((1 << 5) | (5 << 3));
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IWL_DEBUG_SCAN(priv, "Scanning ch=%d prob=0x%X [%s %d]\n",
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channel, le32_to_cpu(scan_ch->type),
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(scan_ch->type & SCAN_CHANNEL_TYPE_ACTIVE) ?
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"ACTIVE" : "PASSIVE",
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(scan_ch->type & SCAN_CHANNEL_TYPE_ACTIVE) ?
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active_dwell : passive_dwell);
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scan_ch++;
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added++;
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}
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IWL_DEBUG_SCAN(priv, "total channels to scan %d\n", added);
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return added;
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}
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int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
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{
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struct iwl_host_cmd cmd = {
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.id = REPLY_SCAN_CMD,
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.len = { sizeof(struct iwl_scan_cmd), },
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.flags = CMD_SYNC,
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};
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struct iwl_scan_cmd *scan;
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struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
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u32 rate_flags = 0;
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u16 cmd_len;
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u16 rx_chain = 0;
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enum ieee80211_band band;
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u8 n_probes = 0;
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u8 rx_ant = hw_params(priv).valid_rx_ant;
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u8 rate;
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bool is_active = false;
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int chan_mod;
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u8 active_chains;
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u8 scan_tx_antennas = hw_params(priv).valid_tx_ant;
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int ret;
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lockdep_assert_held(&priv->shrd->mutex);
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if (vif)
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ctx = iwl_rxon_ctx_from_vif(vif);
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if (!priv->scan_cmd) {
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priv->scan_cmd = kmalloc(sizeof(struct iwl_scan_cmd) +
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IWL_MAX_SCAN_SIZE, GFP_KERNEL);
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if (!priv->scan_cmd) {
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IWL_DEBUG_SCAN(priv,
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"fail to allocate memory for scan\n");
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return -ENOMEM;
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}
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}
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scan = priv->scan_cmd;
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memset(scan, 0, sizeof(struct iwl_scan_cmd) + IWL_MAX_SCAN_SIZE);
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scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
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scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
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if (priv->scan_type != IWL_SCAN_ROC &&
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iwl_is_any_associated(priv)) {
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u16 interval = 0;
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u32 extra;
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u32 suspend_time = 100;
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u32 scan_suspend_time = 100;
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IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
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switch (priv->scan_type) {
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case IWL_SCAN_ROC:
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WARN_ON(1);
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break;
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case IWL_SCAN_RADIO_RESET:
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interval = 0;
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break;
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case IWL_SCAN_NORMAL:
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interval = vif->bss_conf.beacon_int;
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break;
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}
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scan->suspend_time = 0;
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scan->max_out_time = cpu_to_le32(200 * 1024);
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if (!interval)
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interval = suspend_time;
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extra = (suspend_time / interval) << 22;
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scan_suspend_time = (extra |
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((suspend_time % interval) * 1024));
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scan->suspend_time = cpu_to_le32(scan_suspend_time);
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IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
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scan_suspend_time, interval);
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} else if (priv->scan_type == IWL_SCAN_ROC) {
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scan->suspend_time = 0;
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scan->max_out_time = 0;
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scan->quiet_time = 0;
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scan->quiet_plcp_th = 0;
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}
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switch (priv->scan_type) {
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case IWL_SCAN_RADIO_RESET:
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IWL_DEBUG_SCAN(priv, "Start internal passive scan.\n");
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break;
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case IWL_SCAN_NORMAL:
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if (priv->scan_request->n_ssids) {
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int i, p = 0;
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IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
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for (i = 0; i < priv->scan_request->n_ssids; i++) {
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/* always does wildcard anyway */
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if (!priv->scan_request->ssids[i].ssid_len)
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continue;
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scan->direct_scan[p].id = WLAN_EID_SSID;
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scan->direct_scan[p].len =
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priv->scan_request->ssids[i].ssid_len;
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memcpy(scan->direct_scan[p].ssid,
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priv->scan_request->ssids[i].ssid,
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priv->scan_request->ssids[i].ssid_len);
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n_probes++;
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p++;
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}
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is_active = true;
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} else
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IWL_DEBUG_SCAN(priv, "Start passive scan.\n");
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break;
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case IWL_SCAN_ROC:
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IWL_DEBUG_SCAN(priv, "Start ROC scan.\n");
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break;
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}
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scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
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scan->tx_cmd.sta_id = ctx->bcast_sta_id;
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scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
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switch (priv->scan_band) {
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case IEEE80211_BAND_2GHZ:
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scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
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chan_mod = le32_to_cpu(
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priv->contexts[IWL_RXON_CTX_BSS].active.flags &
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RXON_FLG_CHANNEL_MODE_MSK)
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>> RXON_FLG_CHANNEL_MODE_POS;
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if (chan_mod == CHANNEL_MODE_PURE_40) {
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rate = IWL_RATE_6M_PLCP;
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} else {
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rate = IWL_RATE_1M_PLCP;
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rate_flags = RATE_MCS_CCK_MSK;
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}
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/*
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* Internal scans are passive, so we can indiscriminately set
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* the BT ignore flag on 2.4 GHz since it applies to TX only.
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*/
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if (priv->cfg->bt_params &&
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priv->cfg->bt_params->advanced_bt_coexist)
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scan->tx_cmd.tx_flags |= TX_CMD_FLG_IGNORE_BT;
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break;
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case IEEE80211_BAND_5GHZ:
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rate = IWL_RATE_6M_PLCP;
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break;
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default:
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IWL_WARN(priv, "Invalid scan band\n");
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return -EIO;
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}
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/*
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* If active scanning is requested but a certain channel is
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* marked passive, we can do active scanning if we detect
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* transmissions.
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*
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* There is an issue with some firmware versions that triggers
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* a sysassert on a "good CRC threshold" of zero (== disabled),
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* on a radar channel even though this means that we should NOT
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* send probes.
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*
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* The "good CRC threshold" is the number of frames that we
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* need to receive during our dwell time on a channel before
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* sending out probes -- setting this to a huge value will
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* mean we never reach it, but at the same time work around
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* the aforementioned issue. Thus use IWL_GOOD_CRC_TH_NEVER
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* here instead of IWL_GOOD_CRC_TH_DISABLED.
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*
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* This was fixed in later versions along with some other
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* scan changes, and the threshold behaves as a flag in those
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* versions.
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*/
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if (priv->new_scan_threshold_behaviour)
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scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH_DEFAULT :
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IWL_GOOD_CRC_TH_DISABLED;
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else
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scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH_DEFAULT :
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IWL_GOOD_CRC_TH_NEVER;
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band = priv->scan_band;
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if (priv->cfg->scan_rx_antennas[band])
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rx_ant = priv->cfg->scan_rx_antennas[band];
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if (band == IEEE80211_BAND_2GHZ &&
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priv->cfg->bt_params &&
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priv->cfg->bt_params->advanced_bt_coexist) {
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/* transmit 2.4 GHz probes only on first antenna */
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scan_tx_antennas = first_antenna(scan_tx_antennas);
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}
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priv->scan_tx_ant[band] = iwl_toggle_tx_ant(priv, priv->scan_tx_ant[band],
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scan_tx_antennas);
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rate_flags |= iwl_ant_idx_to_flags(priv->scan_tx_ant[band]);
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scan->tx_cmd.rate_n_flags = iwl_hw_set_rate_n_flags(rate, rate_flags);
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/* In power save mode use one chain, otherwise use all chains */
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if (test_bit(STATUS_POWER_PMI, &priv->shrd->status)) {
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/* rx_ant has been set to all valid chains previously */
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active_chains = rx_ant &
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((u8)(priv->chain_noise_data.active_chains));
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if (!active_chains)
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active_chains = rx_ant;
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IWL_DEBUG_SCAN(priv, "chain_noise_data.active_chains: %u\n",
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priv->chain_noise_data.active_chains);
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rx_ant = first_antenna(active_chains);
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}
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if (priv->cfg->bt_params &&
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priv->cfg->bt_params->advanced_bt_coexist &&
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priv->bt_full_concurrent) {
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/* operated as 1x1 in full concurrency mode */
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rx_ant = first_antenna(rx_ant);
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}
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/* MIMO is not used here, but value is required */
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rx_chain |=
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hw_params(priv).valid_rx_ant << RXON_RX_CHAIN_VALID_POS;
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rx_chain |= rx_ant << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
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rx_chain |= rx_ant << RXON_RX_CHAIN_FORCE_SEL_POS;
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rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
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scan->rx_chain = cpu_to_le16(rx_chain);
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switch (priv->scan_type) {
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case IWL_SCAN_NORMAL:
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cmd_len = iwl_fill_probe_req(priv,
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(struct ieee80211_mgmt *)scan->data,
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vif->addr,
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priv->scan_request->ie,
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priv->scan_request->ie_len,
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IWL_MAX_SCAN_SIZE - sizeof(*scan));
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break;
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case IWL_SCAN_RADIO_RESET:
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case IWL_SCAN_ROC:
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/* use bcast addr, will not be transmitted but must be valid */
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|
||||||
cmd_len = iwl_fill_probe_req(priv,
|
|
||||||
(struct ieee80211_mgmt *)scan->data,
|
|
||||||
iwl_bcast_addr, NULL, 0,
|
|
||||||
IWL_MAX_SCAN_SIZE - sizeof(*scan));
|
|
||||||
break;
|
|
||||||
default:
|
|
||||||
BUG();
|
|
||||||
}
|
|
||||||
scan->tx_cmd.len = cpu_to_le16(cmd_len);
|
|
||||||
|
|
||||||
scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
|
|
||||||
RXON_FILTER_BCON_AWARE_MSK);
|
|
||||||
|
|
||||||
switch (priv->scan_type) {
|
|
||||||
case IWL_SCAN_RADIO_RESET:
|
|
||||||
scan->channel_count =
|
|
||||||
iwl_get_single_channel_for_scan(priv, vif, band,
|
|
||||||
(void *)&scan->data[cmd_len]);
|
|
||||||
break;
|
|
||||||
case IWL_SCAN_NORMAL:
|
|
||||||
scan->channel_count =
|
|
||||||
iwl_get_channels_for_scan(priv, vif, band,
|
|
||||||
is_active, n_probes,
|
|
||||||
(void *)&scan->data[cmd_len]);
|
|
||||||
break;
|
|
||||||
case IWL_SCAN_ROC: {
|
|
||||||
struct iwl_scan_channel *scan_ch;
|
|
||||||
|
|
||||||
scan->channel_count = 1;
|
|
||||||
|
|
||||||
scan_ch = (void *)&scan->data[cmd_len];
|
|
||||||
scan_ch->type = SCAN_CHANNEL_TYPE_PASSIVE;
|
|
||||||
scan_ch->channel =
|
|
||||||
cpu_to_le16(priv->hw_roc_channel->hw_value);
|
|
||||||
scan_ch->active_dwell =
|
|
||||||
scan_ch->passive_dwell =
|
|
||||||
cpu_to_le16(priv->hw_roc_duration);
|
|
||||||
|
|
||||||
/* Set txpower levels to defaults */
|
|
||||||
scan_ch->dsp_atten = 110;
|
|
||||||
|
|
||||||
/* NOTE: if we were doing 6Mb OFDM for scans we'd use
|
|
||||||
* power level:
|
|
||||||
* scan_ch->tx_gain = ((1 << 5) | (2 << 3)) | 3;
|
|
||||||
*/
|
|
||||||
if (priv->hw_roc_channel->band == IEEE80211_BAND_5GHZ)
|
|
||||||
scan_ch->tx_gain = ((1 << 5) | (3 << 3)) | 3;
|
|
||||||
else
|
|
||||||
scan_ch->tx_gain = ((1 << 5) | (5 << 3));
|
|
||||||
}
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (scan->channel_count == 0) {
|
|
||||||
IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
|
|
||||||
return -EIO;
|
|
||||||
}
|
|
||||||
|
|
||||||
cmd.len[0] += le16_to_cpu(scan->tx_cmd.len) +
|
|
||||||
scan->channel_count * sizeof(struct iwl_scan_channel);
|
|
||||||
cmd.data[0] = scan;
|
|
||||||
cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
|
|
||||||
scan->len = cpu_to_le16(cmd.len[0]);
|
|
||||||
|
|
||||||
/* set scan bit here for PAN params */
|
|
||||||
set_bit(STATUS_SCAN_HW, &priv->shrd->status);
|
|
||||||
|
|
||||||
ret = iwlagn_set_pan_params(priv);
|
|
||||||
if (ret)
|
|
||||||
return ret;
|
|
||||||
|
|
||||||
ret = iwl_trans_send_cmd(trans(priv), &cmd);
|
|
||||||
if (ret) {
|
|
||||||
clear_bit(STATUS_SCAN_HW, &priv->shrd->status);
|
|
||||||
iwlagn_set_pan_params(priv);
|
|
||||||
}
|
|
||||||
|
|
||||||
return ret;
|
|
||||||
}
|
|
||||||
|
|
||||||
int iwlagn_manage_ibss_station(struct iwl_priv *priv,
|
int iwlagn_manage_ibss_station(struct iwl_priv *priv,
|
||||||
struct ieee80211_vif *vif, bool add)
|
struct ieee80211_vif *vif, bool add)
|
||||||
{
|
{
|
||||||
|
|
|
||||||
|
|
@ -146,7 +146,6 @@ static inline bool iwl_is_tx_success(u32 status)
|
||||||
u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant_idx, u8 valid);
|
u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant_idx, u8 valid);
|
||||||
|
|
||||||
/* scan */
|
/* scan */
|
||||||
int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif);
|
|
||||||
void iwlagn_post_scan(struct iwl_priv *priv);
|
void iwlagn_post_scan(struct iwl_priv *priv);
|
||||||
void iwlagn_disable_roc(struct iwl_priv *priv);
|
void iwlagn_disable_roc(struct iwl_priv *priv);
|
||||||
|
|
||||||
|
|
|
||||||
|
|
@ -330,12 +330,6 @@ int iwl_force_reset(struct iwl_priv *priv, int mode, bool external);
|
||||||
u16 iwl_fill_probe_req(struct iwl_priv *priv, struct ieee80211_mgmt *frame,
|
u16 iwl_fill_probe_req(struct iwl_priv *priv, struct ieee80211_mgmt *frame,
|
||||||
const u8 *ta, const u8 *ie, int ie_len, int left);
|
const u8 *ta, const u8 *ie, int ie_len, int left);
|
||||||
void iwl_setup_rx_scan_handlers(struct iwl_priv *priv);
|
void iwl_setup_rx_scan_handlers(struct iwl_priv *priv);
|
||||||
u16 iwl_get_active_dwell_time(struct iwl_priv *priv,
|
|
||||||
enum ieee80211_band band,
|
|
||||||
u8 n_probes);
|
|
||||||
u16 iwl_get_passive_dwell_time(struct iwl_priv *priv,
|
|
||||||
enum ieee80211_band band,
|
|
||||||
struct ieee80211_vif *vif);
|
|
||||||
void iwl_setup_scan_deferred_work(struct iwl_priv *priv);
|
void iwl_setup_scan_deferred_work(struct iwl_priv *priv);
|
||||||
void iwl_cancel_scan_deferred_work(struct iwl_priv *priv);
|
void iwl_cancel_scan_deferred_work(struct iwl_priv *priv);
|
||||||
int __must_check iwl_scan_initiate(struct iwl_priv *priv,
|
int __must_check iwl_scan_initiate(struct iwl_priv *priv,
|
||||||
|
|
|
||||||
|
|
@ -299,9 +299,8 @@ void iwl_setup_rx_scan_handlers(struct iwl_priv *priv)
|
||||||
iwl_rx_scan_complete_notif;
|
iwl_rx_scan_complete_notif;
|
||||||
}
|
}
|
||||||
|
|
||||||
inline u16 iwl_get_active_dwell_time(struct iwl_priv *priv,
|
static u16 iwl_get_active_dwell_time(struct iwl_priv *priv,
|
||||||
enum ieee80211_band band,
|
enum ieee80211_band band, u8 n_probes)
|
||||||
u8 n_probes)
|
|
||||||
{
|
{
|
||||||
if (band == IEEE80211_BAND_5GHZ)
|
if (band == IEEE80211_BAND_5GHZ)
|
||||||
return IWL_ACTIVE_DWELL_TIME_52 +
|
return IWL_ACTIVE_DWELL_TIME_52 +
|
||||||
|
|
@ -311,9 +310,8 @@ inline u16 iwl_get_active_dwell_time(struct iwl_priv *priv,
|
||||||
IWL_ACTIVE_DWELL_FACTOR_24GHZ * (n_probes + 1);
|
IWL_ACTIVE_DWELL_FACTOR_24GHZ * (n_probes + 1);
|
||||||
}
|
}
|
||||||
|
|
||||||
u16 iwl_get_passive_dwell_time(struct iwl_priv *priv,
|
static u16 iwl_get_passive_dwell_time(struct iwl_priv *priv,
|
||||||
enum ieee80211_band band,
|
enum ieee80211_band band)
|
||||||
struct ieee80211_vif *vif)
|
|
||||||
{
|
{
|
||||||
struct iwl_rxon_context *ctx;
|
struct iwl_rxon_context *ctx;
|
||||||
u16 passive = (band == IEEE80211_BAND_2GHZ) ?
|
u16 passive = (band == IEEE80211_BAND_2GHZ) ?
|
||||||
|
|
@ -342,6 +340,435 @@ u16 iwl_get_passive_dwell_time(struct iwl_priv *priv,
|
||||||
return passive;
|
return passive;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
static int iwl_get_single_channel_for_scan(struct iwl_priv *priv,
|
||||||
|
struct ieee80211_vif *vif,
|
||||||
|
enum ieee80211_band band,
|
||||||
|
struct iwl_scan_channel *scan_ch)
|
||||||
|
{
|
||||||
|
const struct ieee80211_supported_band *sband;
|
||||||
|
u16 passive_dwell = 0;
|
||||||
|
u16 active_dwell = 0;
|
||||||
|
int added = 0;
|
||||||
|
u16 channel = 0;
|
||||||
|
|
||||||
|
sband = iwl_get_hw_mode(priv, band);
|
||||||
|
if (!sband) {
|
||||||
|
IWL_ERR(priv, "invalid band\n");
|
||||||
|
return added;
|
||||||
|
}
|
||||||
|
|
||||||
|
active_dwell = iwl_get_active_dwell_time(priv, band, 0);
|
||||||
|
passive_dwell = iwl_get_passive_dwell_time(priv, band);
|
||||||
|
|
||||||
|
if (passive_dwell <= active_dwell)
|
||||||
|
passive_dwell = active_dwell + 1;
|
||||||
|
|
||||||
|
channel = iwl_get_single_channel_number(priv, band);
|
||||||
|
if (channel) {
|
||||||
|
scan_ch->channel = cpu_to_le16(channel);
|
||||||
|
scan_ch->type = SCAN_CHANNEL_TYPE_PASSIVE;
|
||||||
|
scan_ch->active_dwell = cpu_to_le16(active_dwell);
|
||||||
|
scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
|
||||||
|
/* Set txpower levels to defaults */
|
||||||
|
scan_ch->dsp_atten = 110;
|
||||||
|
if (band == IEEE80211_BAND_5GHZ)
|
||||||
|
scan_ch->tx_gain = ((1 << 5) | (3 << 3)) | 3;
|
||||||
|
else
|
||||||
|
scan_ch->tx_gain = ((1 << 5) | (5 << 3));
|
||||||
|
added++;
|
||||||
|
} else
|
||||||
|
IWL_ERR(priv, "no valid channel found\n");
|
||||||
|
return added;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int iwl_get_channels_for_scan(struct iwl_priv *priv,
|
||||||
|
struct ieee80211_vif *vif,
|
||||||
|
enum ieee80211_band band,
|
||||||
|
u8 is_active, u8 n_probes,
|
||||||
|
struct iwl_scan_channel *scan_ch)
|
||||||
|
{
|
||||||
|
struct ieee80211_channel *chan;
|
||||||
|
const struct ieee80211_supported_band *sband;
|
||||||
|
const struct iwl_channel_info *ch_info;
|
||||||
|
u16 passive_dwell = 0;
|
||||||
|
u16 active_dwell = 0;
|
||||||
|
int added, i;
|
||||||
|
u16 channel;
|
||||||
|
|
||||||
|
sband = iwl_get_hw_mode(priv, band);
|
||||||
|
if (!sband)
|
||||||
|
return 0;
|
||||||
|
|
||||||
|
active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
|
||||||
|
passive_dwell = iwl_get_passive_dwell_time(priv, band);
|
||||||
|
|
||||||
|
if (passive_dwell <= active_dwell)
|
||||||
|
passive_dwell = active_dwell + 1;
|
||||||
|
|
||||||
|
for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) {
|
||||||
|
chan = priv->scan_request->channels[i];
|
||||||
|
|
||||||
|
if (chan->band != band)
|
||||||
|
continue;
|
||||||
|
|
||||||
|
channel = chan->hw_value;
|
||||||
|
scan_ch->channel = cpu_to_le16(channel);
|
||||||
|
|
||||||
|
ch_info = iwl_get_channel_info(priv, band, channel);
|
||||||
|
if (!is_channel_valid(ch_info)) {
|
||||||
|
IWL_DEBUG_SCAN(priv,
|
||||||
|
"Channel %d is INVALID for this band.\n",
|
||||||
|
channel);
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!is_active || is_channel_passive(ch_info) ||
|
||||||
|
(chan->flags & IEEE80211_CHAN_PASSIVE_SCAN))
|
||||||
|
scan_ch->type = SCAN_CHANNEL_TYPE_PASSIVE;
|
||||||
|
else
|
||||||
|
scan_ch->type = SCAN_CHANNEL_TYPE_ACTIVE;
|
||||||
|
|
||||||
|
if (n_probes)
|
||||||
|
scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
|
||||||
|
|
||||||
|
scan_ch->active_dwell = cpu_to_le16(active_dwell);
|
||||||
|
scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
|
||||||
|
|
||||||
|
/* Set txpower levels to defaults */
|
||||||
|
scan_ch->dsp_atten = 110;
|
||||||
|
|
||||||
|
/* NOTE: if we were doing 6Mb OFDM for scans we'd use
|
||||||
|
* power level:
|
||||||
|
* scan_ch->tx_gain = ((1 << 5) | (2 << 3)) | 3;
|
||||||
|
*/
|
||||||
|
if (band == IEEE80211_BAND_5GHZ)
|
||||||
|
scan_ch->tx_gain = ((1 << 5) | (3 << 3)) | 3;
|
||||||
|
else
|
||||||
|
scan_ch->tx_gain = ((1 << 5) | (5 << 3));
|
||||||
|
|
||||||
|
IWL_DEBUG_SCAN(priv, "Scanning ch=%d prob=0x%X [%s %d]\n",
|
||||||
|
channel, le32_to_cpu(scan_ch->type),
|
||||||
|
(scan_ch->type & SCAN_CHANNEL_TYPE_ACTIVE) ?
|
||||||
|
"ACTIVE" : "PASSIVE",
|
||||||
|
(scan_ch->type & SCAN_CHANNEL_TYPE_ACTIVE) ?
|
||||||
|
active_dwell : passive_dwell);
|
||||||
|
|
||||||
|
scan_ch++;
|
||||||
|
added++;
|
||||||
|
}
|
||||||
|
|
||||||
|
IWL_DEBUG_SCAN(priv, "total channels to scan %d\n", added);
|
||||||
|
return added;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
|
||||||
|
{
|
||||||
|
struct iwl_host_cmd cmd = {
|
||||||
|
.id = REPLY_SCAN_CMD,
|
||||||
|
.len = { sizeof(struct iwl_scan_cmd), },
|
||||||
|
.flags = CMD_SYNC,
|
||||||
|
};
|
||||||
|
struct iwl_scan_cmd *scan;
|
||||||
|
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
|
||||||
|
u32 rate_flags = 0;
|
||||||
|
u16 cmd_len;
|
||||||
|
u16 rx_chain = 0;
|
||||||
|
enum ieee80211_band band;
|
||||||
|
u8 n_probes = 0;
|
||||||
|
u8 rx_ant = hw_params(priv).valid_rx_ant;
|
||||||
|
u8 rate;
|
||||||
|
bool is_active = false;
|
||||||
|
int chan_mod;
|
||||||
|
u8 active_chains;
|
||||||
|
u8 scan_tx_antennas = hw_params(priv).valid_tx_ant;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
lockdep_assert_held(&priv->shrd->mutex);
|
||||||
|
|
||||||
|
if (vif)
|
||||||
|
ctx = iwl_rxon_ctx_from_vif(vif);
|
||||||
|
|
||||||
|
if (!priv->scan_cmd) {
|
||||||
|
priv->scan_cmd = kmalloc(sizeof(struct iwl_scan_cmd) +
|
||||||
|
IWL_MAX_SCAN_SIZE, GFP_KERNEL);
|
||||||
|
if (!priv->scan_cmd) {
|
||||||
|
IWL_DEBUG_SCAN(priv,
|
||||||
|
"fail to allocate memory for scan\n");
|
||||||
|
return -ENOMEM;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
scan = priv->scan_cmd;
|
||||||
|
memset(scan, 0, sizeof(struct iwl_scan_cmd) + IWL_MAX_SCAN_SIZE);
|
||||||
|
|
||||||
|
scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
|
||||||
|
scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
|
||||||
|
|
||||||
|
if (priv->scan_type != IWL_SCAN_ROC &&
|
||||||
|
iwl_is_any_associated(priv)) {
|
||||||
|
u16 interval = 0;
|
||||||
|
u32 extra;
|
||||||
|
u32 suspend_time = 100;
|
||||||
|
u32 scan_suspend_time = 100;
|
||||||
|
|
||||||
|
IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
|
||||||
|
switch (priv->scan_type) {
|
||||||
|
case IWL_SCAN_ROC:
|
||||||
|
WARN_ON(1);
|
||||||
|
break;
|
||||||
|
case IWL_SCAN_RADIO_RESET:
|
||||||
|
interval = 0;
|
||||||
|
break;
|
||||||
|
case IWL_SCAN_NORMAL:
|
||||||
|
interval = vif->bss_conf.beacon_int;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
scan->suspend_time = 0;
|
||||||
|
scan->max_out_time = cpu_to_le32(200 * 1024);
|
||||||
|
if (!interval)
|
||||||
|
interval = suspend_time;
|
||||||
|
|
||||||
|
extra = (suspend_time / interval) << 22;
|
||||||
|
scan_suspend_time = (extra |
|
||||||
|
((suspend_time % interval) * 1024));
|
||||||
|
scan->suspend_time = cpu_to_le32(scan_suspend_time);
|
||||||
|
IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
|
||||||
|
scan_suspend_time, interval);
|
||||||
|
} else if (priv->scan_type == IWL_SCAN_ROC) {
|
||||||
|
scan->suspend_time = 0;
|
||||||
|
scan->max_out_time = 0;
|
||||||
|
scan->quiet_time = 0;
|
||||||
|
scan->quiet_plcp_th = 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
switch (priv->scan_type) {
|
||||||
|
case IWL_SCAN_RADIO_RESET:
|
||||||
|
IWL_DEBUG_SCAN(priv, "Start internal passive scan.\n");
|
||||||
|
break;
|
||||||
|
case IWL_SCAN_NORMAL:
|
||||||
|
if (priv->scan_request->n_ssids) {
|
||||||
|
int i, p = 0;
|
||||||
|
IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
|
||||||
|
for (i = 0; i < priv->scan_request->n_ssids; i++) {
|
||||||
|
/* always does wildcard anyway */
|
||||||
|
if (!priv->scan_request->ssids[i].ssid_len)
|
||||||
|
continue;
|
||||||
|
scan->direct_scan[p].id = WLAN_EID_SSID;
|
||||||
|
scan->direct_scan[p].len =
|
||||||
|
priv->scan_request->ssids[i].ssid_len;
|
||||||
|
memcpy(scan->direct_scan[p].ssid,
|
||||||
|
priv->scan_request->ssids[i].ssid,
|
||||||
|
priv->scan_request->ssids[i].ssid_len);
|
||||||
|
n_probes++;
|
||||||
|
p++;
|
||||||
|
}
|
||||||
|
is_active = true;
|
||||||
|
} else
|
||||||
|
IWL_DEBUG_SCAN(priv, "Start passive scan.\n");
|
||||||
|
break;
|
||||||
|
case IWL_SCAN_ROC:
|
||||||
|
IWL_DEBUG_SCAN(priv, "Start ROC scan.\n");
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
|
||||||
|
scan->tx_cmd.sta_id = ctx->bcast_sta_id;
|
||||||
|
scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
|
||||||
|
|
||||||
|
switch (priv->scan_band) {
|
||||||
|
case IEEE80211_BAND_2GHZ:
|
||||||
|
scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
|
||||||
|
chan_mod = le32_to_cpu(
|
||||||
|
priv->contexts[IWL_RXON_CTX_BSS].active.flags &
|
||||||
|
RXON_FLG_CHANNEL_MODE_MSK)
|
||||||
|
>> RXON_FLG_CHANNEL_MODE_POS;
|
||||||
|
if (chan_mod == CHANNEL_MODE_PURE_40) {
|
||||||
|
rate = IWL_RATE_6M_PLCP;
|
||||||
|
} else {
|
||||||
|
rate = IWL_RATE_1M_PLCP;
|
||||||
|
rate_flags = RATE_MCS_CCK_MSK;
|
||||||
|
}
|
||||||
|
/*
|
||||||
|
* Internal scans are passive, so we can indiscriminately set
|
||||||
|
* the BT ignore flag on 2.4 GHz since it applies to TX only.
|
||||||
|
*/
|
||||||
|
if (priv->cfg->bt_params &&
|
||||||
|
priv->cfg->bt_params->advanced_bt_coexist)
|
||||||
|
scan->tx_cmd.tx_flags |= TX_CMD_FLG_IGNORE_BT;
|
||||||
|
break;
|
||||||
|
case IEEE80211_BAND_5GHZ:
|
||||||
|
rate = IWL_RATE_6M_PLCP;
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
IWL_WARN(priv, "Invalid scan band\n");
|
||||||
|
return -EIO;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* If active scanning is requested but a certain channel is
|
||||||
|
* marked passive, we can do active scanning if we detect
|
||||||
|
* transmissions.
|
||||||
|
*
|
||||||
|
* There is an issue with some firmware versions that triggers
|
||||||
|
* a sysassert on a "good CRC threshold" of zero (== disabled),
|
||||||
|
* on a radar channel even though this means that we should NOT
|
||||||
|
* send probes.
|
||||||
|
*
|
||||||
|
* The "good CRC threshold" is the number of frames that we
|
||||||
|
* need to receive during our dwell time on a channel before
|
||||||
|
* sending out probes -- setting this to a huge value will
|
||||||
|
* mean we never reach it, but at the same time work around
|
||||||
|
* the aforementioned issue. Thus use IWL_GOOD_CRC_TH_NEVER
|
||||||
|
* here instead of IWL_GOOD_CRC_TH_DISABLED.
|
||||||
|
*
|
||||||
|
* This was fixed in later versions along with some other
|
||||||
|
* scan changes, and the threshold behaves as a flag in those
|
||||||
|
* versions.
|
||||||
|
*/
|
||||||
|
if (priv->new_scan_threshold_behaviour)
|
||||||
|
scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH_DEFAULT :
|
||||||
|
IWL_GOOD_CRC_TH_DISABLED;
|
||||||
|
else
|
||||||
|
scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH_DEFAULT :
|
||||||
|
IWL_GOOD_CRC_TH_NEVER;
|
||||||
|
|
||||||
|
band = priv->scan_band;
|
||||||
|
|
||||||
|
if (priv->cfg->scan_rx_antennas[band])
|
||||||
|
rx_ant = priv->cfg->scan_rx_antennas[band];
|
||||||
|
|
||||||
|
if (band == IEEE80211_BAND_2GHZ &&
|
||||||
|
priv->cfg->bt_params &&
|
||||||
|
priv->cfg->bt_params->advanced_bt_coexist) {
|
||||||
|
/* transmit 2.4 GHz probes only on first antenna */
|
||||||
|
scan_tx_antennas = first_antenna(scan_tx_antennas);
|
||||||
|
}
|
||||||
|
|
||||||
|
priv->scan_tx_ant[band] = iwl_toggle_tx_ant(priv,
|
||||||
|
priv->scan_tx_ant[band],
|
||||||
|
scan_tx_antennas);
|
||||||
|
rate_flags |= iwl_ant_idx_to_flags(priv->scan_tx_ant[band]);
|
||||||
|
scan->tx_cmd.rate_n_flags = iwl_hw_set_rate_n_flags(rate, rate_flags);
|
||||||
|
|
||||||
|
/* In power save mode use one chain, otherwise use all chains */
|
||||||
|
if (test_bit(STATUS_POWER_PMI, &priv->shrd->status)) {
|
||||||
|
/* rx_ant has been set to all valid chains previously */
|
||||||
|
active_chains = rx_ant &
|
||||||
|
((u8)(priv->chain_noise_data.active_chains));
|
||||||
|
if (!active_chains)
|
||||||
|
active_chains = rx_ant;
|
||||||
|
|
||||||
|
IWL_DEBUG_SCAN(priv, "chain_noise_data.active_chains: %u\n",
|
||||||
|
priv->chain_noise_data.active_chains);
|
||||||
|
|
||||||
|
rx_ant = first_antenna(active_chains);
|
||||||
|
}
|
||||||
|
if (priv->cfg->bt_params &&
|
||||||
|
priv->cfg->bt_params->advanced_bt_coexist &&
|
||||||
|
priv->bt_full_concurrent) {
|
||||||
|
/* operated as 1x1 in full concurrency mode */
|
||||||
|
rx_ant = first_antenna(rx_ant);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* MIMO is not used here, but value is required */
|
||||||
|
rx_chain |=
|
||||||
|
hw_params(priv).valid_rx_ant << RXON_RX_CHAIN_VALID_POS;
|
||||||
|
rx_chain |= rx_ant << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
|
||||||
|
rx_chain |= rx_ant << RXON_RX_CHAIN_FORCE_SEL_POS;
|
||||||
|
rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
|
||||||
|
scan->rx_chain = cpu_to_le16(rx_chain);
|
||||||
|
switch (priv->scan_type) {
|
||||||
|
case IWL_SCAN_NORMAL:
|
||||||
|
cmd_len = iwl_fill_probe_req(priv,
|
||||||
|
(struct ieee80211_mgmt *)scan->data,
|
||||||
|
vif->addr,
|
||||||
|
priv->scan_request->ie,
|
||||||
|
priv->scan_request->ie_len,
|
||||||
|
IWL_MAX_SCAN_SIZE - sizeof(*scan));
|
||||||
|
break;
|
||||||
|
case IWL_SCAN_RADIO_RESET:
|
||||||
|
case IWL_SCAN_ROC:
|
||||||
|
/* use bcast addr, will not be transmitted but must be valid */
|
||||||
|
cmd_len = iwl_fill_probe_req(priv,
|
||||||
|
(struct ieee80211_mgmt *)scan->data,
|
||||||
|
iwl_bcast_addr, NULL, 0,
|
||||||
|
IWL_MAX_SCAN_SIZE - sizeof(*scan));
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
BUG();
|
||||||
|
}
|
||||||
|
scan->tx_cmd.len = cpu_to_le16(cmd_len);
|
||||||
|
|
||||||
|
scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
|
||||||
|
RXON_FILTER_BCON_AWARE_MSK);
|
||||||
|
|
||||||
|
switch (priv->scan_type) {
|
||||||
|
case IWL_SCAN_RADIO_RESET:
|
||||||
|
scan->channel_count =
|
||||||
|
iwl_get_single_channel_for_scan(priv, vif, band,
|
||||||
|
(void *)&scan->data[cmd_len]);
|
||||||
|
break;
|
||||||
|
case IWL_SCAN_NORMAL:
|
||||||
|
scan->channel_count =
|
||||||
|
iwl_get_channels_for_scan(priv, vif, band,
|
||||||
|
is_active, n_probes,
|
||||||
|
(void *)&scan->data[cmd_len]);
|
||||||
|
break;
|
||||||
|
case IWL_SCAN_ROC: {
|
||||||
|
struct iwl_scan_channel *scan_ch;
|
||||||
|
|
||||||
|
scan->channel_count = 1;
|
||||||
|
|
||||||
|
scan_ch = (void *)&scan->data[cmd_len];
|
||||||
|
scan_ch->type = SCAN_CHANNEL_TYPE_PASSIVE;
|
||||||
|
scan_ch->channel =
|
||||||
|
cpu_to_le16(priv->hw_roc_channel->hw_value);
|
||||||
|
scan_ch->active_dwell =
|
||||||
|
scan_ch->passive_dwell =
|
||||||
|
cpu_to_le16(priv->hw_roc_duration);
|
||||||
|
|
||||||
|
/* Set txpower levels to defaults */
|
||||||
|
scan_ch->dsp_atten = 110;
|
||||||
|
|
||||||
|
/* NOTE: if we were doing 6Mb OFDM for scans we'd use
|
||||||
|
* power level:
|
||||||
|
* scan_ch->tx_gain = ((1 << 5) | (2 << 3)) | 3;
|
||||||
|
*/
|
||||||
|
if (priv->hw_roc_channel->band == IEEE80211_BAND_5GHZ)
|
||||||
|
scan_ch->tx_gain = ((1 << 5) | (3 << 3)) | 3;
|
||||||
|
else
|
||||||
|
scan_ch->tx_gain = ((1 << 5) | (5 << 3));
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (scan->channel_count == 0) {
|
||||||
|
IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
|
||||||
|
return -EIO;
|
||||||
|
}
|
||||||
|
|
||||||
|
cmd.len[0] += le16_to_cpu(scan->tx_cmd.len) +
|
||||||
|
scan->channel_count * sizeof(struct iwl_scan_channel);
|
||||||
|
cmd.data[0] = scan;
|
||||||
|
cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
|
||||||
|
scan->len = cpu_to_le16(cmd.len[0]);
|
||||||
|
|
||||||
|
/* set scan bit here for PAN params */
|
||||||
|
set_bit(STATUS_SCAN_HW, &priv->shrd->status);
|
||||||
|
|
||||||
|
ret = iwlagn_set_pan_params(priv);
|
||||||
|
if (ret)
|
||||||
|
return ret;
|
||||||
|
|
||||||
|
ret = iwl_trans_send_cmd(trans(priv), &cmd);
|
||||||
|
if (ret) {
|
||||||
|
clear_bit(STATUS_SCAN_HW, &priv->shrd->status);
|
||||||
|
iwlagn_set_pan_params(priv);
|
||||||
|
}
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
void iwl_init_scan_params(struct iwl_priv *priv)
|
void iwl_init_scan_params(struct iwl_priv *priv)
|
||||||
{
|
{
|
||||||
u8 ant_idx = fls(hw_params(priv).valid_tx_ant) - 1;
|
u8 ant_idx = fls(hw_params(priv).valid_tx_ant) - 1;
|
||||||
|
|
|
||||||
Загрузка…
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