diff options
| author | Pradeep Nemavat <pnemavat@marvell.com> | 2011-04-21 15:04:57 +0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-04-25 22:50:16 +0400 |
| commit | 566875db5058f582ea56da891f9c3cabc01efff5 (patch) | |
| tree | 2475029977001bed0d4e21abb9483dc76336ed1a /drivers/net/wireless/mwl8k.c | |
| parent | 3a7dbc3b2ac545efac75d4145839eaa7b59d9741 (diff) | |
| download | linux-566875db5058f582ea56da891f9c3cabc01efff5.tar.xz | |
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: Pradeep Nemavat <pnemavat@marvell.com>
Signed-off-by: Nishant Sarmukadam <nishants@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/mwl8k.c')
| -rw-r--r-- | drivers/net/wireless/mwl8k.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/net/wireless/mwl8k.c b/drivers/net/wireless/mwl8k.c index 33da25a349b7..93fe1bd91c36 100644 --- a/drivers/net/wireless/mwl8k.c +++ b/drivers/net/wireless/mwl8k.c @@ -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); |