From 2eb278e083549f4eb29838037004054b3b55df62 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 5 Jun 2012 14:28:42 +0200 Subject: mac80211: unify SW/offload remain-on-channel Redesign all the off-channel code, getting rid of the generic off-channel work concept, replacing it with a simple remain-on-channel list. This fixes a number of small issues with the ROC implementation: * offloaded remain-on-channel couldn't be queued, now we can queue it as well, if needed * in iwlwifi (the only user) offloaded ROC is mutually exclusive with scanning, use the new queue to handle that case -- I expect that it will later depend on a HW flag The bigger issue though is that there's a bad bug in the current implementation: if we get a mgmt TX request while HW roc is active, and this new request has a wait time, we actually schedule a software ROC instead since we can't guarantee the existing offloaded ROC will still be that long. To fix this, the queuing mechanism was needed. The queuing mechanism for offloaded ROC isn't yet optimal, ideally we should add API to have the HW extend the ROC if needed. We could add that later but for now use a software implementation. Overall, this unifies the behaviour between the offloaded and software-implemented case as much as possible. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/net/mac80211.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include/net/mac80211.h') diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 6e700bf8d4a5..d152f54064fd 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -2184,9 +2184,6 @@ enum ieee80211_rate_control_changed { * normally except for the %IEEE80211_TX_CTL_TX_OFFCHAN flag. When the * duration (which will always be non-zero) expires, the driver must call * ieee80211_remain_on_channel_expired(). - * The driver must not call ieee80211_remain_on_channel_expired() before - * the TX status for a frame that was sent off-channel, otherwise the TX - * status is reported to userspace in an invalid way. * Note that this callback may be called while the device is in IDLE and * must be accepted in this case. * This callback may sleep. -- cgit v1.2.3