From: Manikanta Pubbisetty <[email protected]>
The patch adds support to offload TCP/UDP checksum
calculations for QCA99x0.
Signed-off-by: Manikanta Pubbisetty <[email protected]>
---
This patch has dependency with peter oh's htt tx/rx patch set for
QCA99X0 chipset.
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 e31cd74..551f64b 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 c49ecff..1b34c13 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
--
1.7.9.5