[PATCH 03/16] iwlwifi: mvm: properly decode HE GI duration

[Luca Coelho]

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

The GI duration depends on the frame type in some cases,
take that into account when decoding for radiotap.

Signed-off-by: Johannes Berg <johannes.b...@intel.com>
Signed-off-by: Luca Coelho <luciano.coe...@intel.com>
---
 drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c | 22 ++++++++++++++-----
 1 file changed, 16 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c 
b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
index f644bcf7e048..314012ed7a29 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
@@ -1150,25 +1150,35 @@ static void iwl_mvm_rx_he(struct iwl_mvm *mvm, struct 
sk_buff *skb,
        switch ((rate_n_flags & RATE_MCS_HE_GI_LTF_MSK) >>
                RATE_MCS_HE_GI_LTF_POS) {
        case 0:
-               rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
+               if (he_type == RATE_MCS_HE_TYPE_TRIG)
+                       rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
+               else
+                       rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
                if (he_type == RATE_MCS_HE_TYPE_MU)
                        ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
                else
                        ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_1X;
                break;
        case 1:
-               rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
+               if (he_type == RATE_MCS_HE_TYPE_TRIG)
+                       rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
+               else
+                       rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
                ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
                break;
        case 2:
-               rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
-               if (he_type == RATE_MCS_HE_TYPE_TRIG)
+               if (he_type == RATE_MCS_HE_TYPE_TRIG) {
+                       rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
                        ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_4X;
-               else
+               } else {
+                       rx_status->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
                        ltf = IEEE80211_RADIOTAP_HE_DATA5_LTF_SIZE_2X;
+               }
                break;
        case 3:
-               if (rate_n_flags & RATE_MCS_SGI_MSK)
+               if ((he_type == RATE_MCS_HE_TYPE_SU ||
+                    he_type == RATE_MCS_HE_TYPE_EXT_SU) &&
+                   rate_n_flags & RATE_MCS_SGI_MSK)
                        rx_status->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
                else
                        rx_status->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
-- 
2.18.0