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| author | Johannes Berg <johannes@sipsolutions.net> | 2009-12-23 13:15:32 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-12-28 16:54:51 -0500 |
| commit | a80f7c0b088187c8471b441d461e937991870661 (patch) | |
| tree | f673c08009a03f2e988a638510b112a5584bea11 /net/mac80211/scan.c | |
| parent | 9607e6b66a0d25ca63b70d54a4283fa13d8f7c9d (diff) | |
| download | kernel_samsung_aries-a80f7c0b088187c8471b441d461e937991870661.zip kernel_samsung_aries-a80f7c0b088187c8471b441d461e937991870661.tar.gz kernel_samsung_aries-a80f7c0b088187c8471b441d461e937991870661.tar.bz2 | |
mac80211: introduce flush operation
We've long lacked a good confirmation that frames
have really gone out, e.g. before going off-channel
for a scan. Add a flush() operation that drivers
can implement to provide that confirmation, and use
it in a few places:
* before scanning sends the nullfunc frames
* after scanning sends the nullfunc frames, if any
* when going idle, to send any pending frames
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/scan.c')
| -rw-r--r-- | net/mac80211/scan.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c index ae18300..d98c45e 100644 --- a/net/mac80211/scan.c +++ b/net/mac80211/scan.c @@ -418,9 +418,10 @@ static int ieee80211_start_sw_scan(struct ieee80211_local *local) local->next_scan_state = SCAN_DECISION; local->scan_channel_idx = 0; + drv_flush(local, false); + ieee80211_configure_filter(local); - /* TODO: start scan as soon as all nullfunc frames are ACKed */ ieee80211_queue_delayed_work(&local->hw, &local->scan_work, IEEE80211_CHANNEL_TIME); @@ -584,8 +585,16 @@ static void ieee80211_scan_state_leave_oper_channel(struct ieee80211_local *loca __set_bit(SCAN_OFF_CHANNEL, &local->scanning); + /* + * What if the nullfunc frames didn't arrive? + */ + drv_flush(local, false); + if (local->ops->flush) + *next_delay = 0; + else + *next_delay = HZ / 10; + /* advance to the next channel to be scanned */ - *next_delay = HZ / 10; local->next_scan_state = SCAN_SET_CHANNEL; } |