Merge tag 'wireless-drivers-2019-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers

Kalle Valo says:

====================
wireless-drivers fixes for 5.4

Third set of fixes for 5.4. Most of them are for iwlwifi but important
fixes also for rtlwifi and mt76, the overflow fix for rtlwifi being
most important.

iwlwifi

* fix merge damage on earlier patch

* various fixes to device id handling

* fix scan config command handling which caused firmware asserts

rtlwifi

* fix overflow on P2P IE handling

* don't deliver too small frames to mac80211

mt76

* disable PCIE_ASPM

* fix buffer DMA unmap on certain cases
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 32 insertions, 8 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
index f6b3045badbd..fcafa22ec6ce 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
@@ -1137,11 +1137,11 @@ static void iwl_mvm_fill_scan_config_v1(struct iwl_mvm *mvm, void *config,
 	iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels);
 }
 
-static void iwl_mvm_fill_scan_config(struct iwl_mvm *mvm, void *config,
-				     u32 flags, u8 channel_flags,
-				     u32 max_channels)
+static void iwl_mvm_fill_scan_config_v2(struct iwl_mvm *mvm, void *config,
+					u32 flags, u8 channel_flags,
+					u32 max_channels)
 {
-	struct iwl_scan_config *cfg = config;
+	struct iwl_scan_config_v2 *cfg = config;
 
 	cfg->flags = cpu_to_le32(flags);
 	cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
@@ -1185,7 +1185,7 @@ static void iwl_mvm_fill_scan_config(struct iwl_mvm *mvm, void *config,
 	iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels);
 }
 
-int iwl_mvm_config_scan(struct iwl_mvm *mvm)
+static int iwl_mvm_legacy_config_scan(struct iwl_mvm *mvm)
 {
 	void *cfg;
 	int ret, cmd_size;
@@ -1217,7 +1217,7 @@ int iwl_mvm_config_scan(struct iwl_mvm *mvm)
 	}
 
 	if (iwl_mvm_cdb_scan_api(mvm))
-		cmd_size = sizeof(struct iwl_scan_config);
+		cmd_size = sizeof(struct iwl_scan_config_v2);
 	else
 		cmd_size = sizeof(struct iwl_scan_config_v1);
 	cmd_size += num_channels;
@@ -1254,8 +1254,8 @@ int iwl_mvm_config_scan(struct iwl_mvm *mvm)
 			flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ?
 				 SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED :
 				 SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED;
-		iwl_mvm_fill_scan_config(mvm, cfg, flags, channel_flags,
-					 num_channels);
+		iwl_mvm_fill_scan_config_v2(mvm, cfg, flags, channel_flags,
+					    num_channels);
 	} else {
 		iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags,
 					    num_channels);
@@ -1277,6 +1277,30 @@ int iwl_mvm_config_scan(struct iwl_mvm *mvm)
 	return ret;
 }
 
+int iwl_mvm_config_scan(struct iwl_mvm *mvm)
+{
+	struct iwl_scan_config cfg;
+	struct iwl_host_cmd cmd = {
+		.id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0),
+		.len[0] = sizeof(cfg),
+		.data[0] = &cfg,
+		.dataflags[0] = IWL_HCMD_DFL_NOCOPY,
+	};
+
+	if (!iwl_mvm_is_reduced_config_scan_supported(mvm))
+		return iwl_mvm_legacy_config_scan(mvm);
+
+	memset(&cfg, 0, sizeof(cfg));
+
+	cfg.bcast_sta_id = mvm->aux_sta.sta_id;
+	cfg.tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
+	cfg.rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
+
+	IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");
+
+	return iwl_mvm_send_cmd(mvm, &cmd);
+}
+
 static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status)
 {
 	int i;