From: Rakesh Pillai <pillair@xxxxxxxxxxxxxx>
By default ath10k driver enables the support for HW_CHECKSUM
(NETIF_F_HW_CSUM). Since the TCP/UDP checksum calculation is not enabled
in the wcn3990 firmware the checksum is incorrect in the TCP/UDP packets
and all patckets are dropped. But due note that wcn3990 support in
ath10k is still incomplete so this isn't a critical fix (yet).
Enable hw checksum calculations in wcn3990 hardware by
setting the proper flags in msdu descriptor tso flags.
Signed-off-by: Rakesh Pillai <pillair@xxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath10k/htt.h | 13 +++++++++++++
drivers/net/wireless/ath/ath10k/htt_tx.c | 7 +++++--
2 files changed, 18 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ath/ath10k/htt.h b/drivers/net/wireless/ath/ath10k/htt.h
index 8cc2a8b..11f52df 100644
--- a/drivers/net/wireless/ath/ath10k/htt.h
+++ b/drivers/net/wireless/ath/ath10k/htt.h
@@ -127,6 +127,19 @@ struct htt_msdu_ext_desc_64 {
| HTT_MSDU_EXT_DESC_FLAG_TCP_IPV4_CSUM_ENABLE \
| HTT_MSDU_EXT_DESC_FLAG_TCP_IPV6_CSUM_ENABLE)
+#define HTT_MSDU_EXT_DESC_FLAG_IPV4_CSUM_ENABLE_64 BIT(16)
+#define HTT_MSDU_EXT_DESC_FLAG_UDP_IPV4_CSUM_ENABLE_64 BIT(17)
+#define HTT_MSDU_EXT_DESC_FLAG_UDP_IPV6_CSUM_ENABLE_64 BIT(18)
+#define HTT_MSDU_EXT_DESC_FLAG_TCP_IPV4_CSUM_ENABLE_64 BIT(19)
+#define HTT_MSDU_EXT_DESC_FLAG_TCP_IPV6_CSUM_ENABLE_64 BIT(20)
+#define HTT_MSDU_EXT_DESC_FLAG_PARTIAL_CSUM_ENABLE_64 BIT(21)
+
+#define HTT_MSDU_CHECKSUM_ENABLE_64 (HTT_MSDU_EXT_DESC_FLAG_IPV4_CSUM_ENABLE_64 \
+ | HTT_MSDU_EXT_DESC_FLAG_UDP_IPV4_CSUM_ENABLE_64 \
+ | HTT_MSDU_EXT_DESC_FLAG_UDP_IPV6_CSUM_ENABLE_64 \
+ | HTT_MSDU_EXT_DESC_FLAG_TCP_IPV4_CSUM_ENABLE_64 \
+ | HTT_MSDU_EXT_DESC_FLAG_TCP_IPV6_CSUM_ENABLE_64)
+
enum htt_data_tx_desc_flags0 {
HTT_DATA_TX_DESC_FLAGS0_MAC_HDR_PRESENT = 1 << 0,
HTT_DATA_TX_DESC_FLAGS0_NO_AGGR = 1 << 1,
diff --git a/drivers/net/wireless/ath/ath10k/htt_tx.c b/drivers/net/wireless/ath/ath10k/htt_tx.c
index d334b7b..ad49d06 100644
--- a/drivers/net/wireless/ath/ath10k/htt_tx.c
+++ b/drivers/net/wireless/ath/ath10k/htt_tx.c
@@ -1475,8 +1475,11 @@ static int ath10k_htt_tx_64(struct ath10k_htt *htt,
!test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags)) {
flags1 |= HTT_DATA_TX_DESC_FLAGS1_CKSUM_L3_OFFLOAD;
flags1 |= HTT_DATA_TX_DESC_FLAGS1_CKSUM_L4_OFFLOAD;
- if (ar->hw_params.continuous_frag_desc)
- ext_desc->flags |= HTT_MSDU_CHECKSUM_ENABLE;
+ if (ar->hw_params.continuous_frag_desc) {
+ memset(ext_desc->tso_flag, 0, sizeof(ext_desc->tso_flag));
+ ext_desc->tso_flag[3] |=
+ __cpu_to_le32(HTT_MSDU_CHECKSUM_ENABLE_64);
+ }
}
/* Prevent firmware from sending up tx inspection requests. There's
--
1.9.1
