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Commit 20529b33 authored by Rakesh Pillai's avatar Rakesh Pillai Committed by Kalle Valo
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ath10k: enable hw checksum for wcn3990 



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: default avatarRakesh Pillai <pillair@codeaurora.org>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
parent 0fc8bb50

drivers/net/wireless/ath/ath10k/htt.h

+13 −0
Original line number Original line Diff line number Diff line
@@ -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_IPV4_CSUM_ENABLE \

				 | HTT_MSDU_EXT_DESC_FLAG_TCP_IPV6_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 {

enum htt_data_tx_desc_flags0 {

	HTT_DATA_TX_DESC_FLAGS0_MAC_HDR_PRESENT = 1 << 0,

	HTT_DATA_TX_DESC_FLAGS0_MAC_HDR_PRESENT = 1 << 0,

	HTT_DATA_TX_DESC_FLAGS0_NO_AGGR         = 1 << 1,

	HTT_DATA_TX_DESC_FLAGS0_NO_AGGR         = 1 << 1,

drivers/net/wireless/ath/ath10k/htt_tx.c

+5 −2
Original line number Original line Diff line number Diff line
@@ -1475,8 +1475,11 @@ static int ath10k_htt_tx_64(struct ath10k_htt *htt, 
	    !test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags)) {

	    !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_L3_OFFLOAD;

		flags1 |= HTT_DATA_TX_DESC_FLAGS1_CKSUM_L4_OFFLOAD;

		flags1 |= HTT_DATA_TX_DESC_FLAGS1_CKSUM_L4_OFFLOAD;

		if (ar->hw_params.continuous_frag_desc)

		if (ar->hw_params.continuous_frag_desc) {

			ext_desc->flags |= HTT_MSDU_CHECKSUM_ENABLE;

			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

	/* Prevent firmware from sending up tx inspection requests. There's