From: Pradeep Nemavat <pnemavat@xxxxxxxxxxx>
Timestamp tx packets using a HW micro-second timer.
This timestamp will be compared to the current timestamp
in the hardware and if the difference is greater than 500ms,
the packet will be dropped.
Signed-off-by: Pradeep Nemavat <pnemavat@xxxxxxxxxxx>
Signed-off-by: Nishant Sarmukadam <nishants@xxxxxxxxxxx>
---
drivers/net/wireless/mwl8k.c | 12 ++++++++++++
1 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/drivers/net/wireless/mwl8k.c b/drivers/net/wireless/mwl8k.c
index 7968301..aca0139 100644
--- a/drivers/net/wireless/mwl8k.c
+++ b/drivers/net/wireless/mwl8k.c
@@ -1792,6 +1792,14 @@ static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
tx_stats->pkts++;
}
+/* HW micro second timer register
+ * located at offset 0xA600. This
+ * will be used to timestamp tx
+ * packets.
+ */
+
+#define MWL8K_HW_TIMER_REGISTER (priv->regs + 0xA600)
+
static void
mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
{
@@ -1972,6 +1980,10 @@ mwl8k_txq_xmit(struct ieee80211_hw *hw, int index, struct sk_buff *skb)
tx->peer_id = MWL8K_STA(tx_info->control.sta)->peer_id;
else
tx->peer_id = 0;
+
+ if (priv->ap_fw)
+ tx->timestamp = cpu_to_le32(ioread32(MWL8K_HW_TIMER_REGISTER));
+
wmb();
tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
--
1.6.0.3
--
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