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mac80211: refactor station state transitions

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Station entries can have various states, the most
important ones being auth, assoc and authorized.
This patch prepares us for telling the driver about
these states, we don't want to confuse drivers with
strange transitions, so with this we enforce that
they move in the right order between them (back and
forth); some transitions might happen before the
driver even knows about the station, but at least
runtime transitions will be ordered correctly.

As a consequence, IBSS and MESH stations will now
have the ASSOC flag set (so they can transition to
AUTHORIZED), and we can get rid of a special case
in TX processing.

When freeing a station, unwind the state so that
other parts of the code (or drivers later) can rely
on the transitions.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
2011-12-14 12:35:30 +01:00
committed by John W. Linville
parent 87be1e1e00
commit d9a7ddb05e
8 changed files with 172 additions and 30 deletions
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6
net/mac80211/mlme.c
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@@ -1577,10 +1577,10 @@ static bool ieee80211_assoc_success(struct ieee80211_work *wk,
return false;
}
set_sta_flag(sta, WLAN_STA_AUTH);
set_sta_flag(sta, WLAN_STA_ASSOC);
sta_info_move_state(sta, IEEE80211_STA_AUTH);
sta_info_move_state(sta, IEEE80211_STA_ASSOC);
if (!(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
set_sta_flag(sta, WLAN_STA_AUTHORIZED);
sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
rates = 0;
basic_rates = 0;