iwlagn: send RXON timing before associating

The PAN functionality requires us to send the
timing including a valid DTIM period to the
microcode before associating, so request this
data from mac80211 and send it to the device.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>

2 files changed, 18 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index 143c12a29fd8..79aff1fb85a1 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -182,6 +182,21 @@ int iwl_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
 
         iwl_set_rxon_hwcrypto(priv, ctx, !priv->cfg->mod_params->sw_crypto);
 
+        if (new_assoc) {
+                if (WARN_ON(!ctx->vif))
+                        return -EINVAL;
+                /*
+                 * First of all, before setting associated, we need to
+                 * send RXON timing so the device knows about the DTIM
+                 * period and other timing values
+                 */
+                ret = iwl_send_rxon_timing(priv, ctx->vif);
+                if (ret) {
+                        IWL_ERR(priv, "Error setting RXON timing!\n");
+                        return ret;
+                }
+        }
+
         /* Apply the new configuration
          * RXON unassoc clears the station table in uCode so restoration of
          * stations is needed after it (the RXON command) completes
@@ -3355,6 +3370,7 @@ static int iwl_mac_setup_register(struct iwl_priv *priv,
         /* Tell mac80211 our characteristics */
         hw->flags = IEEE80211_HW_SIGNAL_DBM |
                     IEEE80211_HW_AMPDU_AGGREGATION |
+                    IEEE80211_HW_NEED_DTIM_PERIOD |
                     IEEE80211_HW_SPECTRUM_MGMT;
 
         if (!priv->cfg->broken_powersave)
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c
index fb9173b1e5aa..04d7894e0004 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.c
+++ b/drivers/net/wireless/iwlwifi/iwl-core.c
@@ -536,6 +536,8 @@ int iwl_send_rxon_timing(struct iwl_priv *priv, struct ieee80211_vif *vif)
         rem = do_div(tsf, interval_tm);
         ctx->timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
 
+        ctx->timing.dtim_period = vif->bss_conf.dtim_period;
+
         IWL_DEBUG_ASSOC(priv,
                         "beacon interval %d beacon timer %d beacon tim %d\n",
                         le16_to_cpu(ctx->timing.beacon_interval),