On Wed, Sep 29, 2010 at 05:28:35AM +0530, Luis R. Rodriguez wrote: > On Tue, Sep 28, 2010 at 4:02 PM, Jouni Malinen <j@xxxxx> wrote: > > On Tue, Sep 28, 2010 at 03:29:45PM -0700, Luis R. Rodriguez wrote: > > > >> Added support for cfg80211/mac80211 to cleanly roam between two BSSes > >> on an ESS by allowing the station to reassociate to an old AP and > >> only when that is done drop the old association. What we forgot to > >> take into consideration is that when we disassociate with the older > >> AP we may need to transmit frames to that AP and those frames may > >> actually be intended to go under a different channel and even sometimes > >> a completely separate band than the new APs. > > > > which frames are you talking about here? > > ieee80211_send_delba() > > > When reassociating to a new BSS > > in an ESS, there should be no need to transmit frames to the old AP > > anymore, i.e., we are never associated with more than one BSS (when > > talking about a single vif). We could just drop any potential TX frame > > to the old AP after the moment the new AP is marked associated. > > That's the goal of this patch. >From my debugging, this happens when cleaning up BA session for old AP but on a different channel (where we just authenticated with another AP) just before starting association with the new AP. Though local->work_work takes care of moving to right channel, it is possible that cfg80211 receives NL80211_CMD_ASSOCIATE before local->work_work configures the hw back to old AP's channel (that is what happening in our case). Vasanth -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
