diff mbox

[RESEND,01/01,for,3.2] iwlagn: handle GO powersave

Message ID 1314339236-24828-1-git-send-email-wey-yi.w.guy@intel.com (mailing list archive)
State Not Applicable, archived
Headers show

Commit Message

Guy, Wey-Yi W Aug. 26, 2011, 6:13 a.m. UTC 
From: Berg, Johannes <johannes.berg@intel.com>

In order to implement support for GO powersave on
the P2P client side, the ucode needs to know what
GO we're trying to authenticate/associate with,
it needs to have a station entry and the BSSID in
the RXON set.

Implement the new mac80211 callbacks to give this
data to the device.

Since this is also useful for the device when a
normal connection is established, also program it
with the information in that case.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
---
these patches are also available from wireless-2.6 branch on
 git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi.git

 drivers/net/wireless/iwlwifi/iwl-agn-rxon.c |    5 ++
 drivers/net/wireless/iwlwifi/iwl-agn.c      |   68 +++++++++++++++++++++++++++
 drivers/net/wireless/iwlwifi/iwl-dev.h      |    3 +
 3 files changed, 76 insertions(+), 0 deletions(-)

Comments

Johannes Berg Aug. 26, 2011, 7:58 p.m. UTC | #1 
> From: Berg, Johannes <johannes.berg@intel.com>

Hmm, it's kinda my fault for not adding a From: line, but could you still fix it for me please?

johannes
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diff mbox

Patch

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c b/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c
index d562e93..7b13ea2 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c
@@ -434,6 +434,10 @@  int iwlagn_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
 	if (!ctx->is_active)
 		return 0;
 
+	/* override BSSID if necessary due to preauth */
+	if (ctx->preauth_bssid)
+		memcpy(ctx->staging.bssid_addr, ctx->bssid, ETH_ALEN);
+
 	/* always get timestamp with Rx frame */
 	ctx->staging.flags |= RXON_FLG_TSF2HOST_MSK;
 
@@ -895,6 +899,7 @@  void iwlagn_bss_info_changed(struct ieee80211_hw *hw,
 		if (!priv->disable_chain_noise_cal)
 			iwlagn_chain_noise_reset(priv);
 		priv->start_calib = 1;
+		WARN_ON(ctx->preauth_bssid);
 	}
 
 	if (changes & BSS_CHANGED_IBSS) {
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index c5a1612..6960b8c 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -3330,6 +3330,72 @@  static int iwl_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
 	return 0;
 }
 
+static int iwl_mac_tx_sync(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+			   const u8 *bssid, enum ieee80211_tx_sync_type type)
+{
+	struct iwl_priv *priv = hw->priv;
+	struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
+	struct iwl_rxon_context *ctx = vif_priv->ctx;
+	int ret;
+	u8 sta_id;
+
+	mutex_lock(&priv->shrd->mutex);
+
+	if (iwl_is_associated_ctx(ctx)) {
+		ret = 0;
+		goto out;
+	}
+
+	if (ctx->preauth_bssid || test_bit(STATUS_SCAN_HW, &priv->shrd->status)) {
+		ret = -EBUSY;
+		goto out;
+	}
+
+	ret = iwl_add_station_common(priv, ctx, bssid, true, NULL, &sta_id);
+	if (ret)
+		goto out;
+
+	if (WARN_ON(sta_id != ctx->ap_sta_id)) {
+		ret = -EIO;
+		goto out_remove_sta;
+	}
+
+	memcpy(ctx->bssid, bssid, ETH_ALEN);
+	ctx->preauth_bssid = true;
+
+	ret = iwlagn_commit_rxon(priv, ctx);
+
+	if (ret == 0)
+		goto out;
+
+ out_remove_sta:
+	iwl_remove_station(priv, sta_id, bssid);
+ out:
+	mutex_unlock(&priv->shrd->mutex);
+	return ret;
+}
+
+static void iwl_mac_finish_tx_sync(struct ieee80211_hw *hw,
+				   struct ieee80211_vif *vif,
+				   const u8 *bssid,
+				   enum ieee80211_tx_sync_type type)
+{
+	struct iwl_priv *priv = hw->priv;
+	struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
+	struct iwl_rxon_context *ctx = vif_priv->ctx;
+
+	mutex_lock(&priv->shrd->mutex);
+
+	if (iwl_is_associated_ctx(ctx))
+		goto out;
+
+	iwl_remove_station(priv, ctx->ap_sta_id, bssid);
+	ctx->preauth_bssid = false;
+	/* no need to commit */
+ out:
+	mutex_unlock(&priv->shrd->mutex);
+}
+
 /*****************************************************************************
  *
  * driver setup and teardown
@@ -3535,6 +3601,8 @@  struct ieee80211_ops iwlagn_hw_ops = {
 	.rssi_callback = iwl_mac_rssi_callback,
 	CFG80211_TESTMODE_CMD(iwl_testmode_cmd)
 	CFG80211_TESTMODE_DUMP(iwl_testmode_dump)
+	.tx_sync = iwl_mac_tx_sync,
+	.finish_tx_sync = iwl_mac_finish_tx_sync,
 };
 
 static u32 iwl_hw_detect(struct iwl_priv *priv)
diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index 42c360e..9d6d791 100644
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -1174,6 +1174,9 @@  struct iwl_rxon_context {
 		u8 extension_chan_offset;
 	} ht;
 
+	u8 bssid[ETH_ALEN];
+	bool preauth_bssid;
+
 	bool last_tx_rejected;
 };