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ath10k: enable hw checksum for wcn3990

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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@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Rakesh Pillai 2018-04-17 14:54:26 +05:30 committed by Kalle Valo
parent 0fc8bb50bb
commit 20529b33aa
2 changed files with 18 additions and 2 deletions
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13
drivers/net/wireless/ath/ath10k/htt.h
View file

@ -128,6 +128,19 @@ 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,

7
drivers/net/wireless/ath/ath10k/htt_tx.c
View file

@ -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