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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 <c_mpubbi@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Manikanta Pubbisetty 2015-07-20 17:56:12 +05:30 committed by Kalle Valo
parent 19be9e9a7a
commit b963519509
2 changed files with 20 additions and 1 deletions
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17
drivers/net/wireless/ath/ath10k/htt.h
View File

@ -97,10 +97,25 @@ struct htt_data_tx_desc_frag {
} __packed; } __packed;
struct htt_msdu_ext_desc { 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]; 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 { 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,

4
drivers/net/wireless/ath/ath10k/htt_tx.c
View File

@ -496,6 +496,7 @@ int ath10k_htt_tx(struct ath10k_htt *htt, struct sk_buff *msdu)
u16 msdu_id, flags1 = 0; u16 msdu_id, flags1 = 0;
dma_addr_t paddr = 0; dma_addr_t paddr = 0;
u32 frags_paddr = 0; u32 frags_paddr = 0;
struct htt_msdu_ext_desc *ext_desc = NULL;
res = ath10k_htt_tx_inc_pending(htt); res = ath10k_htt_tx_inc_pending(htt);
if (res) 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) { if (ar->hw_params.continuous_frag_desc) {
frags = (struct htt_data_tx_desc_frag *) frags = (struct htt_data_tx_desc_frag *)
&htt->frag_desc.vaddr[msdu_id].frags; &htt->frag_desc.vaddr[msdu_id].frags;
ext_desc = &htt->frag_desc.vaddr[msdu_id];
frags[0].tword_addr.paddr_lo = frags[0].tword_addr.paddr_lo =
__cpu_to_le32(skb_cb->paddr); __cpu_to_le32(skb_cb->paddr);
frags[0].tword_addr.paddr_hi = 0; 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) { if (msdu->ip_summed == CHECKSUM_PARTIAL) {
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)
ext_desc->flags |= HTT_MSDU_CHECKSUM_ENABLE;
} }
/* Prevent firmware from sending up tx inspection requests. There's /* Prevent firmware from sending up tx inspection requests. There's