Commit 0d4171e2 authored by Christian Lamparter's avatar Christian Lamparter Committed by John W. Linville

p54: implement flush callback

Signed-off-by: default avatarChristian Lamparter <chunkeey@googlemail.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 8b2988c1
...@@ -524,6 +524,48 @@ static int p54_get_survey(struct ieee80211_hw *dev, int idx, ...@@ -524,6 +524,48 @@ static int p54_get_survey(struct ieee80211_hw *dev, int idx,
return 0; return 0;
} }
static unsigned int p54_flush_count(struct p54_common *priv)
{
unsigned int total = 0, i;
BUILD_BUG_ON(P54_QUEUE_NUM > ARRAY_SIZE(priv->tx_stats));
/*
* Because the firmware has the sole control over any frames
* in the P54_QUEUE_BEACON or P54_QUEUE_SCAN queues, they
* don't really count as pending or active.
*/
for (i = P54_QUEUE_MGMT; i < P54_QUEUE_NUM; i++)
total += priv->tx_stats[i].len;
return total;
}
static void p54_flush(struct ieee80211_hw *dev, bool drop)
{
struct p54_common *priv = dev->priv;
unsigned int total, i;
/*
* Currently, it wouldn't really matter if we wait for one second
* or 15 minutes. But once someone gets around and completes the
* TODOs [ancel stuck frames / reset device] in p54_work, it will
* suddenly make sense to wait that long.
*/
i = P54_STATISTICS_UPDATE * 2 / 20;
/*
* In this case no locking is required because as we speak the
* queues have already been stopped and no new frames can sneak
* up from behind.
*/
while ((total = p54_flush_count(priv) && i--)) {
/* waste time */
msleep(20);
}
WARN(total, "tx flush timeout, unresponsive firmware");
}
static const struct ieee80211_ops p54_ops = { static const struct ieee80211_ops p54_ops = {
.tx = p54_tx_80211, .tx = p54_tx_80211,
.start = p54_start, .start = p54_start,
...@@ -536,6 +578,7 @@ static const struct ieee80211_ops p54_ops = { ...@@ -536,6 +578,7 @@ static const struct ieee80211_ops p54_ops = {
.sta_remove = p54_sta_add_remove, .sta_remove = p54_sta_add_remove,
.set_key = p54_set_key, .set_key = p54_set_key,
.config = p54_config, .config = p54_config,
.flush = p54_flush,
.bss_info_changed = p54_bss_info_changed, .bss_info_changed = p54_bss_info_changed,
.configure_filter = p54_configure_filter, .configure_filter = p54_configure_filter,
.conf_tx = p54_conf_tx, .conf_tx = p54_conf_tx,
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment