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iwlwifi: mvm: disconnect if time event scheduling fails 

If scheduling an important time event fails, or if we get
an unexpected notification from the firmware, there isn't
much we can do to recover, so just drop the connection and
let higher layers retry it.

Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2013-07-25 18:39:30 +02:00
parent 4f0c848a33
commit 057397943e
1 changed files with 23 additions and 10 deletions
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33
drivers/net/wireless/iwlwifi/mvm/time-event.c
View File

@ -138,6 +138,20 @@ static void iwl_mvm_roc_finished(struct iwl_mvm *mvm)
schedule_work(&mvm->roc_done_wk);
}
static bool iwl_mvm_te_check_disconnect(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
const char *errmsg)
{
if (vif->type != NL80211_IFTYPE_STATION)
return false;
if (vif->bss_conf.assoc && vif->bss_conf.dtim_period)
return false;
if (errmsg)
IWL_ERR(mvm, "%s\n", errmsg);
ieee80211_connection_loss(vif);
return true;
}
/*
* Handles a FW notification for an event that is known to the driver.
*
@ -163,8 +177,13 @@ static void iwl_mvm_te_handle_notif(struct iwl_mvm *mvm,
* P2P Device discoveribility, while there are other higher priority
* events in the system).
*/
WARN_ONCE(!le32_to_cpu(notif->status),
"Failed to schedule time event\n");
if (WARN_ONCE(!le32_to_cpu(notif->status),
"Failed to schedule time event\n")) {
if (iwl_mvm_te_check_disconnect(mvm, te_data->vif, NULL)) {
iwl_mvm_te_clear_data(mvm, te_data);
return;
}
}
if (le32_to_cpu(notif->action) & TE_NOTIF_HOST_EVENT_END) {
IWL_DEBUG_TE(mvm,
@ -180,14 +199,8 @@ static void iwl_mvm_te_handle_notif(struct iwl_mvm *mvm,
* By now, we should have finished association
* and know the dtim period.
*/
if (te_data->vif->type == NL80211_IFTYPE_STATION &&
(!te_data->vif->bss_conf.assoc ||
!te_data->vif->bss_conf.dtim_period)) {
IWL_ERR(mvm,
"No assocation and the time event is over already...\n");
ieee80211_connection_loss(te_data->vif);
}
iwl_mvm_te_check_disconnect(mvm, te_data->vif,
"No assocation and the time event is over already...");
iwl_mvm_te_clear_data(mvm, te_data);
} else if (le32_to_cpu(notif->action) & TE_NOTIF_HOST_EVENT_START) {
te_data->running = true;