summaryrefslogtreecommitdiff
path: root/drivers/net/wireless/ath/ath10k/htt_rx.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/wireless/ath/ath10k/htt_rx.c')
-rw-r--r--drivers/net/wireless/ath/ath10k/htt_rx.c48
1 files changed, 46 insertions, 2 deletions
diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c
index 1b7a04366256..6060dda4e910 100644
--- a/drivers/net/wireless/ath/ath10k/htt_rx.c
+++ b/drivers/net/wireless/ath/ath10k/htt_rx.c
@@ -643,6 +643,8 @@ struct amsdu_subframe_hdr {
__be16 len;
} __packed;
+#define GROUP_ID_IS_SU_MIMO(x) ((x) == 0 || (x) == 63)
+
static void ath10k_htt_rx_h_rates(struct ath10k *ar,
struct ieee80211_rx_status *status,
struct htt_rx_desc *rxd)
@@ -650,6 +652,7 @@ static void ath10k_htt_rx_h_rates(struct ath10k *ar,
struct ieee80211_supported_band *sband;
u8 cck, rate, bw, sgi, mcs, nss;
u8 preamble = 0;
+ u8 group_id;
u32 info1, info2, info3;
info1 = __le32_to_cpu(rxd->ppdu_start.info1);
@@ -692,10 +695,50 @@ static void ath10k_htt_rx_h_rates(struct ath10k *ar,
case HTT_RX_VHT_WITH_TXBF:
/* VHT-SIG-A1 in info2, VHT-SIG-A2 in info3
TODO check this */
- mcs = (info3 >> 4) & 0x0F;
- nss = ((info2 >> 10) & 0x07) + 1;
bw = info2 & 3;
sgi = info3 & 1;
+ group_id = (info2 >> 4) & 0x3F;
+
+ if (GROUP_ID_IS_SU_MIMO(group_id)) {
+ mcs = (info3 >> 4) & 0x0F;
+ nss = ((info2 >> 10) & 0x07) + 1;
+ } else {
+ /* Hardware doesn't decode VHT-SIG-B into Rx descriptor
+ * so it's impossible to decode MCS. Also since
+ * firmware consumes Group Id Management frames host
+ * has no knowledge regarding group/user position
+ * mapping so it's impossible to pick the correct Nsts
+ * from VHT-SIG-A1.
+ *
+ * Bandwidth and SGI are valid so report the rateinfo
+ * on best-effort basis.
+ */
+ mcs = 0;
+ nss = 1;
+ }
+
+ if (mcs > 0x09) {
+ ath10k_warn(ar, "invalid MCS received %u\n", mcs);
+ ath10k_warn(ar, "rxd %08x mpdu start %08x %08x msdu start %08x %08x ppdu start %08x %08x %08x %08x %08x\n",
+ __le32_to_cpu(rxd->attention.flags),
+ __le32_to_cpu(rxd->mpdu_start.info0),
+ __le32_to_cpu(rxd->mpdu_start.info1),
+ __le32_to_cpu(rxd->msdu_start.common.info0),
+ __le32_to_cpu(rxd->msdu_start.common.info1),
+ rxd->ppdu_start.info0,
+ __le32_to_cpu(rxd->ppdu_start.info1),
+ __le32_to_cpu(rxd->ppdu_start.info2),
+ __le32_to_cpu(rxd->ppdu_start.info3),
+ __le32_to_cpu(rxd->ppdu_start.info4));
+
+ ath10k_warn(ar, "msdu end %08x mpdu end %08x\n",
+ __le32_to_cpu(rxd->msdu_end.common.info0),
+ __le32_to_cpu(rxd->mpdu_end.info0));
+
+ ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL,
+ "rx desc msdu payload: ",
+ rxd->msdu_payload, 50);
+ }
status->rate_idx = mcs;
status->vht_nss = nss;
@@ -2082,6 +2125,7 @@ void ath10k_htt_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb)
/* Free the indication buffer */
dev_kfree_skb_any(skb);
}
+EXPORT_SYMBOL(ath10k_htt_t2h_msg_handler);
static void ath10k_htt_txrx_compl_task(unsigned long ptr)
{