ath11k: fix vht guard interval mapping

Guard interval value which comes from VHT_SIG_A TLV has a mapping
where value 0 corresponds to LGI, 1 and 3 corresponds to SGI.

Value 3 which is SGI(0.4us) in VHT was incorrectly mapped to a GI
of 3.2us(only applicable in HE) resulting in incorrect rx GI stats.
Fixing the mapping.

Signed-off-by: Manikanta Pubbisetty <mpubbise@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --git a/drivers/net/wireless/ath/ath11k/hal_rx.c b/drivers/net/wireless/ath/ath11k/hal_rx.c
index 6168a4e..9e0f806 100644 (file)
--- a/drivers/net/wireless/ath/ath11k/hal_rx.c
+++ b/drivers/net/wireless/ath/ath11k/hal_rx.c
@@ -920,6 +920,7 @@ ath11k_hal_rx_parse_mon_status_tlv(struct ath11k_base *ab,
                        (struct hal_rx_vht_sig_a_info *)tlv_data;
                u32 nsts;
                u32 group_id;
+               u8 gi_setting;
 
                info0 = __le32_to_cpu(vht_sig->info0);
                info1 = __le32_to_cpu(vht_sig->info1);
@@ -928,9 +929,18 @@ ath11k_hal_rx_parse_mon_status_tlv(struct ath11k_base *ab,
                                            info0);
                ppdu_info->mcs = FIELD_GET(HAL_RX_VHT_SIG_A_INFO_INFO1_MCS,
                                           info1);
-               ppdu_info->gi =
-                       FIELD_GET(HAL_RX_VHT_SIG_A_INFO_INFO1_GI_SETTING,
-                                 info1);
+               gi_setting = FIELD_GET(HAL_RX_VHT_SIG_A_INFO_INFO1_GI_SETTING,
+                                      info1);
+               switch (gi_setting) {
+               case HAL_RX_VHT_SIG_A_NORMAL_GI:
+                       ppdu_info->gi = HAL_RX_GI_0_8_US;
+                       break;
+               case HAL_RX_VHT_SIG_A_SHORT_GI:
+               case HAL_RX_VHT_SIG_A_SHORT_GI_AMBIGUITY:
+                       ppdu_info->gi = HAL_RX_GI_0_4_US;
+                       break;
+               }
+
                ppdu_info->is_stbc = info0 & HAL_RX_VHT_SIG_A_INFO_INFO0_STBC;
                nsts = FIELD_GET(HAL_RX_VHT_SIG_A_INFO_INFO0_NSTS, info0);
                if (ppdu_info->is_stbc && nsts > 0)

diff --git a/drivers/net/wireless/ath/ath11k/hal_rx.h b/drivers/net/wireless/ath/ath11k/hal_rx.h
index 2271bf5..bb022c7 100644 (file)
--- a/drivers/net/wireless/ath/ath11k/hal_rx.h
+++ b/drivers/net/wireless/ath/ath11k/hal_rx.h
@@ -189,6 +189,12 @@ struct hal_rx_vht_sig_a_info {
        __le32 info1;
 } __packed;
 
+enum hal_rx_vht_sig_a_gi_setting {
+       HAL_RX_VHT_SIG_A_NORMAL_GI = 0,
+       HAL_RX_VHT_SIG_A_SHORT_GI = 1,
+       HAL_RX_VHT_SIG_A_SHORT_GI_AMBIGUITY = 3,
+};
+
 #define HAL_RX_HE_SIG_A_SU_INFO_INFO0_TRANSMIT_MCS     GENMASK(6, 3)
 #define HAL_RX_HE_SIG_A_SU_INFO_INFO0_DCM              BIT(7)
 #define HAL_RX_HE_SIG_A_SU_INFO_INFO0_TRANSMIT_BW      GENMASK(20, 19)