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-rxon.c b/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c
index f693293..2a4ff83 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c
@@ -156,6 +156,23 @@
/* always get timestamp with Rx frame */
ctx->staging.flags |= RXON_FLG_TSF2HOST_MSK;
+ if (ctx->ctxid == IWL_RXON_CTX_PAN && priv->_agn.hw_roc_channel) {
+ struct ieee80211_channel *chan = priv->_agn.hw_roc_channel;
+
+ iwl_set_rxon_channel(priv, chan, ctx);
+ iwl_set_flags_for_band(priv, ctx, chan->band, NULL);
+ ctx->staging.filter_flags |=
+ RXON_FILTER_ASSOC_MSK |
+ RXON_FILTER_PROMISC_MSK |
+ RXON_FILTER_CTL2HOST_MSK;
+ ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
+ new_assoc = true;
+
+ if (memcmp(&ctx->staging, &ctx->active,
+ sizeof(ctx->staging)) == 0)
+ return 0;
+ }
+
if ((ctx->vif && ctx->vif->bss_conf.use_short_slot) ||
!(ctx->staging.flags & RXON_FLG_BAND_24G_MSK))
ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;