wifi: iwlwifi: mvm: allow 6 GHz channels in MLO scan

[ Upstream commit 454f630 ]

MLO internal scan may include 6 GHz channels. Since the 6 GHz scan
indication is not set, the channel flags are set incorrectly, which
leads to a firmware assert.
Since the MLO scan may include 6 GHz and non 6 GHz channels in one
request, add support for non-PSC 6 GHz channels (PSC channels are
already supported) when the 6 GHz indication is not set.

Fixes: 38b3998 ("wifi: iwlwifi: mvm: Introduce internal MLO passive scan")
Signed-off-by: Avraham Stern <[email protected]>
Signed-off-by: Miri Korenblit <[email protected]>
Link: https://patch.msgid.link/20240825191257.04807f8213b2.Idd09d4366df92a74853649c1a520b7f0f752d1ac@changeid
Signed-off-by: Johannes Berg <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>

Author: AviStern

drivers/net/wireless/intel/iwlwifi/mvm/scan.c

@@ -1659,6 +1659,17 @@ iwl_mvm_umac_scan_cfg_channels_v7(struct iwl_mvm *mvm,
 		cfg->v2.channel_num = channels[i]->hw_value;
 		if (cfg80211_channel_is_psc(channels[i]))
 			cfg->flags = 0;
+
+		if (band == NL80211_BAND_6GHZ) {
+			/* 6 GHz channels should only appear in a scan request
+			 * that has scan_6ghz set. The only exception is MLO
+			 * scan, which has to be passive.
+			 */
+			WARN_ON_ONCE(cfg->flags != 0);
+			cfg->flags =
+				cpu_to_le32(IWL_UHB_CHAN_CFG_FLAG_FORCE_PASSIVE);
+		}
+
 		cfg->v2.iter_count = 1;
 		cfg->v2.iter_interval = 0;
 		if (version < 17)