[PATCH 14/15] wifi: iwlwifi: enable monitor on passive/inactive channels

[Miri Korenblit <miriam.rachel.korenblit@intel.com>]

From: Johannes Berg <johannes.berg@intel.com>

If firmware supports pure passive monitor on passive/inactive
channels, enable that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
---
 drivers/net/wireless/intel/iwlwifi/fw/file.h       |  3 +++
 drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c | 12 +++++++++---
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/file.h b/drivers/net/wireless/intel/iwlwifi/fw/file.h
index f69d29e531c8..ae05227b6153 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/file.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/file.h
@@ -395,6 +395,8 @@ typedef unsigned int __bitwise iwl_ucode_tlv_capa_t;
  * @IWL_UCODE_TLV_CAPA_SPP_AMSDU_SUPPORT: Support SPP (signaling and payload
  *	protected) A-MSDU.
  * @IWL_UCODE_TLV_CAPA_SECURE_LTF_SUPPORT: Support secure LTF measurement.
+ * @IWL_UCODE_TLV_CAPA_MONITOR_PASSIVE_CHANS: Support monitor mode on otherwise
+ *	passive channels
  *
  * @NUM_IWL_UCODE_TLV_CAPA: number of bits used
  */
@@ -494,6 +496,7 @@ enum iwl_ucode_tlv_capa {
 	IWL_UCODE_TLV_CAPA_SNIFF_VALIDATE_SUPPORT	= (__force iwl_ucode_tlv_capa_t)116,
 	IWL_UCODE_TLV_CAPA_CHINA_22_REG_SUPPORT		= (__force iwl_ucode_tlv_capa_t)117,
 	IWL_UCODE_TLV_CAPA_SECURE_LTF_SUPPORT		= (__force iwl_ucode_tlv_capa_t)121,
+	IWL_UCODE_TLV_CAPA_MONITOR_PASSIVE_CHANS	= (__force iwl_ucode_tlv_capa_t)122,
 	NUM_IWL_UCODE_TLV_CAPA
 /*
  * This construction make both sparse (which cannot increment the previous
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c b/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
index 047f77aad367..9a8d2b69f154 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
@@ -392,11 +392,14 @@ static enum nl80211_band iwl_nl80211_band_from_channel_idx(int ch_idx)
 	return NL80211_BAND_2GHZ;
 }
 
-static int iwl_init_channel_map(struct device *dev, const struct iwl_cfg *cfg,
+static int iwl_init_channel_map(struct iwl_trans *trans,
+				const struct iwl_fw *fw,
 				struct iwl_nvm_data *data,
 				const void * const nvm_ch_flags,
 				u32 sbands_flags, bool v4)
 {
+	const struct iwl_cfg *cfg = trans->cfg;
+	struct device *dev = trans->dev;
 	int ch_idx;
 	int n_channels = 0;
 	struct ieee80211_channel *channel;
@@ -478,6 +481,10 @@ static int iwl_init_channel_map(struct device *dev, const struct iwl_cfg *cfg,
 		else
 			channel->flags = 0;
 
+		if (fw_has_capa(&fw->ucode_capa,
+				IWL_UCODE_TLV_CAPA_MONITOR_PASSIVE_CHANS))
+			channel->flags |= IEEE80211_CHAN_CAN_MONITOR;
+
 		iwl_nvm_print_channel_flags(dev, IWL_DL_EEPROM,
 					    channel->hw_value, ch_flags);
 		IWL_DEBUG_EEPROM(dev, "Ch. %d: %ddBm\n",
@@ -1171,12 +1178,11 @@ static void iwl_init_sbands(struct iwl_trans *trans,
 			    const struct iwl_fw *fw)
 {
 	struct device *dev = trans->dev;
-	const struct iwl_cfg *cfg = trans->cfg;
 	int n_channels;
 	int n_used = 0;
 	struct ieee80211_supported_band *sband;
 
-	n_channels = iwl_init_channel_map(dev, cfg, data, nvm_ch_flags,
+	n_channels = iwl_init_channel_map(trans, fw, data, nvm_ch_flags,
 					  sbands_flags, v4);
 	sband = &data->bands[NL80211_BAND_2GHZ];
 	sband->band = NL80211_BAND_2GHZ;
-- 
2.34.1