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Commit 566875db authored by Pradeep Nemavat's avatar Pradeep Nemavat Committed by John W. Linville
Browse files

mwl8k: Add timestamp information for tx packets 



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: default avatarPradeep Nemavat <pnemavat@marvell.com>
Signed-off-by: default avatarNishant Sarmukadam <nishants@marvell.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 3a7dbc3b

drivers/net/wireless/mwl8k.c

+13 −0
Original line number Diff line number Diff line
@@ -74,6 +74,14 @@ MODULE_PARM_DESC(ap_mode_default, 
#define  MWL8K_A2H_INT_RX_READY			 (1 << 1)

#define  MWL8K_A2H_INT_TX_DONE			 (1 << 0)



/* HW micro second timer register

 * located at offset 0xA600. This

 * will be used to timestamp tx

 * packets.

 */



#define	MWL8K_HW_TIMER_REGISTER			0x0000a600



#define MWL8K_A2H_EVENTS	(MWL8K_A2H_INT_DUMMY | \

				 MWL8K_A2H_INT_CHNL_SWITCHED | \

				 MWL8K_A2H_INT_QUEUE_EMPTY | \
@@ -1972,6 +1980,11 @@ 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(priv->regs +

						MWL8K_HW_TIMER_REGISTER));



	wmb();

	tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);