From b963519509644f52eaaddcc1fa484e28ac74c750 Mon Sep 17 00:00:00 2001 From: Manikanta Pubbisetty Date: Mon, 20 Jul 2015 17:56:12 +0530 Subject: [PATCH] ath10k: add TCP/UDP Checksum offload support for QCA99x0 The patch adds support to offload TCP/UDP checksum calculations for QCA99x0. Signed-off-by: Manikanta Pubbisetty Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/htt.h | 17 ++++++++++++++++- drivers/net/wireless/ath/ath10k/htt_tx.c | 4 ++++ 2 files changed, 20 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath10k/htt.h b/drivers/net/wireless/ath/ath10k/htt.h index e31cd74dded6..551f64bf6457 100644 --- a/drivers/net/wireless/ath/ath10k/htt.h +++ b/drivers/net/wireless/ath/ath10k/htt.h @@ -97,10 +97,25 @@ struct htt_data_tx_desc_frag { } __packed; struct htt_msdu_ext_desc { - __le32 tso_flag[4]; + __le32 tso_flag[3]; + __le16 ip_identification; + u8 flags; + u8 reserved; struct htt_data_tx_desc_frag frags[6]; }; +#define HTT_MSDU_EXT_DESC_FLAG_IPV4_CSUM_ENABLE BIT(0) +#define HTT_MSDU_EXT_DESC_FLAG_UDP_IPV4_CSUM_ENABLE BIT(1) +#define HTT_MSDU_EXT_DESC_FLAG_UDP_IPV6_CSUM_ENABLE BIT(2) +#define HTT_MSDU_EXT_DESC_FLAG_TCP_IPV4_CSUM_ENABLE BIT(3) +#define HTT_MSDU_EXT_DESC_FLAG_TCP_IPV6_CSUM_ENABLE BIT(4) + +#define HTT_MSDU_CHECKSUM_ENABLE (HTT_MSDU_EXT_DESC_FLAG_IPV4_CSUM_ENABLE \ + | HTT_MSDU_EXT_DESC_FLAG_UDP_IPV4_CSUM_ENABLE \ + | HTT_MSDU_EXT_DESC_FLAG_UDP_IPV6_CSUM_ENABLE \ + | HTT_MSDU_EXT_DESC_FLAG_TCP_IPV4_CSUM_ENABLE \ + | HTT_MSDU_EXT_DESC_FLAG_TCP_IPV6_CSUM_ENABLE) + 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 c49ecffc2905..1b34c1350f63 100644 --- a/drivers/net/wireless/ath/ath10k/htt_tx.c +++ b/drivers/net/wireless/ath/ath10k/htt_tx.c @@ -496,6 +496,7 @@ int ath10k_htt_tx(struct ath10k_htt *htt, struct sk_buff *msdu) u16 msdu_id, flags1 = 0; dma_addr_t paddr = 0; u32 frags_paddr = 0; + struct htt_msdu_ext_desc *ext_desc = NULL; res = ath10k_htt_tx_inc_pending(htt); if (res) @@ -542,6 +543,7 @@ int ath10k_htt_tx(struct ath10k_htt *htt, struct sk_buff *msdu) if (ar->hw_params.continuous_frag_desc) { frags = (struct htt_data_tx_desc_frag *) &htt->frag_desc.vaddr[msdu_id].frags; + ext_desc = &htt->frag_desc.vaddr[msdu_id]; frags[0].tword_addr.paddr_lo = __cpu_to_le32(skb_cb->paddr); frags[0].tword_addr.paddr_hi = 0; @@ -603,6 +605,8 @@ int ath10k_htt_tx(struct ath10k_htt *htt, struct sk_buff *msdu) if (msdu->ip_summed == CHECKSUM_PARTIAL) { 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; } /* Prevent firmware from sending up tx inspection requests. There's -- 2.20.1