*/
#include <linux/crc32.h>
+#include "iwl-utils.h"
+
#include "mld.h"
#include "scan.h"
#include "hcmd.h"
static u8
iwl_mld_scan_get_cmd_gen_flags2(struct iwl_mld *mld,
struct iwl_mld_scan_params *params,
- struct ieee80211_vif *vif, u16 gen_flags)
+ struct ieee80211_vif *vif,
+ enum iwl_mld_scan_status scan_status,
+ u16 gen_flags)
{
u8 flags = 0;
if (params->scan_6ghz)
flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_DONT_TOGGLE_ANT;
+ /* For AP interfaces, request survey data for regular scans and if
+ * it is supported. For non-AP interfaces, EBS will be enabled and
+ * the results may be missing information for some channels.
+ */
+ if (scan_status == IWL_MLD_SCAN_REGULAR &&
+ ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_AP &&
+ gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE &&
+ iwl_fw_lookup_notif_ver(mld->fw, SCAN_GROUP,
+ CHANNEL_SURVEY_NOTIF, 0) >= 1)
+ flags |= IWL_UMAC_SCAN_GEN_FLAGS2_COLLECT_CHANNEL_STATS;
+
return flags;
}
u16 gen_flags = iwl_mld_scan_get_cmd_gen_flags(mld, params, vif,
scan_status);
u8 gen_flags2 = iwl_mld_scan_get_cmd_gen_flags2(mld, params, vif,
+ scan_status,
gen_flags);
IWL_DEBUG_SCAN(mld, "General: flags=0x%x, flags2=0x%x\n",
struct cfg80211_scan_request *req,
struct ieee80211_scan_ies *ies)
{
+ /* Clear survey data when starting the first part of a regular scan */
+ if (req->first_part && mld->channel_survey)
+ memset(mld->channel_survey->channels, 0,
+ sizeof(mld->channel_survey->channels[0]) *
+ mld->channel_survey->n_channels);
if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
iwl_mld_emlsr_block_tmp_non_bss(mld);
return 0;
}
+
+static int iwl_mld_chanidx_from_phy(struct iwl_mld *mld,
+ enum nl80211_band band,
+ u16 phy_chan_num)
+{
+ struct ieee80211_supported_band *sband = mld->wiphy->bands[band];
+
+ if (WARN_ON_ONCE(!sband))
+ return -EINVAL;
+
+ for (int chan_idx = 0; chan_idx < sband->n_channels; chan_idx++) {
+ struct ieee80211_channel *channel = &sband->channels[chan_idx];
+
+ if (channel->hw_value == phy_chan_num)
+ return chan_idx;
+ }
+
+ return -EINVAL;
+}
+
+void iwl_mld_handle_channel_survey_notif(struct iwl_mld *mld,
+ struct iwl_rx_packet *pkt)
+{
+ const struct iwl_umac_scan_channel_survey_notif *notif =
+ (void *)pkt->data;
+ struct iwl_mld_survey_channel *info;
+ enum nl80211_band band;
+ int chan_idx;
+
+ if (!mld->channel_survey) {
+ size_t n_channels = 0;
+
+ for (band = 0; band < NUM_NL80211_BANDS; band++) {
+ if (!mld->wiphy->bands[band])
+ continue;
+
+ n_channels += mld->wiphy->bands[band]->n_channels;
+ }
+
+ mld->channel_survey = kzalloc(struct_size(mld->channel_survey,
+ channels, n_channels),
+ GFP_KERNEL);
+
+ if (!mld->channel_survey)
+ return;
+
+ mld->channel_survey->n_channels = n_channels;
+ n_channels = 0;
+ for (band = 0; band < NUM_NL80211_BANDS; band++) {
+ if (!mld->wiphy->bands[band])
+ continue;
+
+ mld->channel_survey->bands[band] =
+ &mld->channel_survey->channels[n_channels];
+ n_channels += mld->wiphy->bands[band]->n_channels;
+ }
+ }
+
+ band = iwl_mld_phy_band_to_nl80211(le32_to_cpu(notif->band));
+ chan_idx = iwl_mld_chanidx_from_phy(mld, band,
+ le32_to_cpu(notif->channel));
+ if (WARN_ON_ONCE(chan_idx < 0))
+ return;
+
+ IWL_DEBUG_SCAN(mld, "channel survey received for freq %d\n",
+ mld->wiphy->bands[band]->channels[chan_idx].center_freq);
+
+ info = &mld->channel_survey->bands[band][chan_idx];
+
+ /* Times are all in ms */
+ info->time = le32_to_cpu(notif->active_time);
+ info->time_busy = le32_to_cpu(notif->busy_time);
+ info->noise =
+ iwl_average_neg_dbm(notif->noise, ARRAY_SIZE(notif->noise));
+}
+
+int iwl_mld_mac80211_get_survey(struct ieee80211_hw *hw, int idx,
+ struct survey_info *survey)
+{
+ struct iwl_mld *mld = IWL_MAC80211_GET_MLD(hw);
+ int curr_idx = 0;
+
+ if (!mld->channel_survey)
+ return -ENOENT;
+
+ /* Iterate bands/channels to find the requested index.
+ * Logically this returns the entry with index "idx" from a flattened
+ * survey result array that only contains channels with information.
+ * The current index into this flattened array is tracked in curr_idx.
+ */
+ for (enum nl80211_band band = 0; band < NUM_NL80211_BANDS; band++) {
+ struct ieee80211_supported_band *sband =
+ mld->wiphy->bands[band];
+
+ if (!sband)
+ continue;
+
+ for (int per_band_idx = 0;
+ per_band_idx < sband->n_channels;
+ per_band_idx++) {
+ struct iwl_mld_survey_channel *info =
+ &mld->channel_survey->bands[band][per_band_idx];
+
+ /* Skip entry entirely, it was not reported/scanned,
+ * do not increase curr_idx for this entry.
+ */
+ if (!info->time)
+ continue;
+
+ /* Search did not reach the requested entry yet,
+ * increment curr_idx and continue.
+ */
+ if (idx != curr_idx) {
+ curr_idx++;
+ continue;
+ }
+
+ /* Found (the next) channel to report */
+ survey->channel = &sband->channels[per_band_idx];
+ survey->filled = SURVEY_INFO_TIME |
+ SURVEY_INFO_TIME_BUSY;
+ survey->time = info->time;
+ survey->time_busy = info->time_busy;
+ survey->noise = info->noise;
+ if (survey->noise < 0)
+ survey->filled |= SURVEY_INFO_NOISE_DBM;
+
+ return 0;
+ }
+ }
+
+ return -ENOENT;
+}
void iwl_mld_handle_scan_complete_notif(struct iwl_mld *mld,
struct iwl_rx_packet *pkt);
+int iwl_mld_mac80211_get_survey(struct ieee80211_hw *hw, int idx,
+ struct survey_info *survey);
+
+void iwl_mld_handle_channel_survey_notif(struct iwl_mld *mld,
+ struct iwl_rx_packet *pkt);
+
#define WFA_TPC_IE_LEN 9
static inline int iwl_mld_scan_max_template_size(void)
u64 last_mlo_scan_time;
};
+/**
+ * struct iwl_mld_survey_channel - per-channel survey information
+ *
+ * Driver version of &struct survey_info with just the data we want to report.
+ *
+ * @time: time in ms the radio was on the channel
+ * @time_busy: time in ms the channel was sensed busy
+ * @noise: channel noise in dBm
+ */
+struct iwl_mld_survey_channel {
+ u32 time;
+ u32 time_busy;
+ s8 noise;
+};
+
+/**
+ * struct iwl_mld_survey - survey information
+ *
+ * Survey information for all available channels.
+ *
+ * @bands: per-band array for per-channel survey data, points into @channels
+ * @n_channels: Number of @channels entries that are allocated
+ * @channels: per-channel information
+ */
+struct iwl_mld_survey {
+ struct iwl_mld_survey_channel *bands[NUM_NL80211_BANDS];
+
+ int n_channels;
+ struct iwl_mld_survey_channel channels[] __counted_by(n_channels);
+};
+
#endif /* __iwl_mld_scan_h__ */
projects / users / willy / xarray.git / commitdiff