iwlwifi: mvm: decode HE information for MU (without ext info)

When the info type is MU, we still have the data from the TSF
overload words, so should decode that. When it's MU_EXT_INFO
we additionally have the SIG-B common 0/1/2 fields.

Also document the validity depending on the info type and fix
the name of the regular TB PPDU info type accordingly.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/fw/api/rx.h

@@ -368,10 +368,10 @@ enum iwl_rx_he_phy {
 	/* trigger encoded */
 	IWL_RX_HE_PHY_RU_ALLOC_MASK		= 0xfe0000000000ULL,
 	IWL_RX_HE_PHY_INFO_TYPE_MASK		= 0xf000000000000000ULL,
-	IWL_RX_HE_PHY_INFO_TYPE_SU		= 0x0,
-	IWL_RX_HE_PHY_INFO_TYPE_MU		= 0x1,
-	IWL_RX_HE_PHY_INFO_TYPE_MU_EXT_INFO	= 0x2,
-	IWL_RX_HE_PHY_INFO_TYPE_TB_EXT_INFO	= 0x3,
+	IWL_RX_HE_PHY_INFO_TYPE_SU		= 0x0, /* TSF low valid (first DW) */
+	IWL_RX_HE_PHY_INFO_TYPE_MU		= 0x1, /* TSF low/high valid (both DWs) */
+	IWL_RX_HE_PHY_INFO_TYPE_MU_EXT_INFO	= 0x2, /* same + SIGB-common0/1/2 valid */
+	IWL_RX_HE_PHY_INFO_TYPE_TB		= 0x3, /* TSF low/high valid (both DWs) */
 
 	/* second dword - MU data */
 	IWL_RX_HE_PHY_MU_SIGB_COMPRESSION		= BIT_ULL(32 + 0),

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

@@ -1095,8 +1095,9 @@ static void iwl_mvm_decode_he_phy_data(struct iwl_mvm *mvm,
 	}
 
 	switch (FIELD_GET(IWL_RX_HE_PHY_INFO_TYPE_MASK, he_phy_data)) {
+	case IWL_RX_HE_PHY_INFO_TYPE_MU:
 	case IWL_RX_HE_PHY_INFO_TYPE_MU_EXT_INFO:
-	case IWL_RX_HE_PHY_INFO_TYPE_TB_EXT_INFO:
+	case IWL_RX_HE_PHY_INFO_TYPE_TB:
 		iwl_mvm_decode_he_phy_ru_alloc(he_phy_data, rate_n_flags,
 					       he, he_mu, rx_status);
 		break;