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authorJuuso Oikarinen <juuso.oikarinen@nokia.com>2010-02-22 08:38:38 +0200
committerJohn W. Linville <linville@tuxdriver.com>2010-03-09 15:03:04 -0500
commitac5e1e39c1eeaaff7e6f03bf7cf7a444b42fbc23 (patch)
tree596566fc2f06b58683270687a1a2601755dfe0c5 /drivers/net/wireless/wl12xx/wl1271_tx.c
parent1e73eb62cec7cf78b7295769b6e51a915518f5a1 (diff)
wl1271: Update TX packet life time handling with higher resolution time
This patch uses a higher precision timer to synchronize with the firmware clock. Improved precision is needed as on some platforms a jiffy may be up to tens of milliseconds, and the required precision is closer to TU's. Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com> Reviewed-by: Teemu Paasikivi <ext-teemu.3.paasikivi@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/wl12xx/wl1271_tx.c')
-rw-r--r--drivers/net/wireless/wl12xx/wl1271_tx.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/net/wireless/wl12xx/wl1271_tx.c b/drivers/net/wireless/wl12xx/wl1271_tx.c
index 7926471cd09..a32d3014781 100644
--- a/drivers/net/wireless/wl12xx/wl1271_tx.c
+++ b/drivers/net/wireless/wl12xx/wl1271_tx.c
@@ -86,8 +86,10 @@ static int wl1271_tx_allocate(struct wl1271 *wl, struct sk_buff *skb, u32 extra)
static int wl1271_tx_fill_hdr(struct wl1271 *wl, struct sk_buff *skb,
u32 extra, struct ieee80211_tx_info *control)
{
+ struct timespec ts;
struct wl1271_tx_hw_descr *desc;
int pad, ac;
+ s64 hosttime;
u16 tx_attr;
desc = (struct wl1271_tx_hw_descr *) skb->data;
@@ -101,8 +103,9 @@ static int wl1271_tx_fill_hdr(struct wl1271 *wl, struct sk_buff *skb,
}
/* configure packet life time */
- desc->start_time = cpu_to_le32(jiffies_to_usecs(jiffies) -
- wl->time_offset);
+ getnstimeofday(&ts);
+ hosttime = (timespec_to_ns(&ts) >> 10);
+ desc->start_time = cpu_to_le32(hosttime - wl->time_offset);
desc->life_time = cpu_to_le16(TX_HW_MGMT_PKT_LIFETIME_TU);
/* configure the tx attributes */