iwlwifi: implement remain-on-channel
For device supporting PAN/P2P, use the PAN
context to implement the remain-on-channel
operation using device offloads so that the
filters in the device will be programmed
correctly -- otherwise we cannot receive
any probe request frames during off-channel
periods.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
index 24a11b8..266490d 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
@@ -539,7 +539,14 @@
unsigned long flags;
bool is_agg = false;
- if (info->control.vif)
+ /*
+ * If the frame needs to go out off-channel, then
+ * we'll have put the PAN context to that channel,
+ * so make the frame go out there.
+ */
+ if (info->flags & IEEE80211_TX_CTL_TX_OFFCHAN)
+ ctx = &priv->contexts[IWL_RXON_CTX_PAN];
+ else if (info->control.vif)
ctx = iwl_rxon_ctx_from_vif(info->control.vif);
spin_lock_irqsave(&priv->lock, flags);