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authorTomas Winkler <tomas.winkler@intel.com>2008-09-24 13:57:46 +0800
committerJohn W. Linville <linville@tuxdriver.com>2008-09-24 16:18:04 -0400
commit8d09a5e1c36d0dec5728e6c8b0bb5412de09b27b (patch)
tree4e98dfc3181fb2feebc37de9b2d61451797b72e0
parent55d6a3cd0cc85ed90c39cf32e16f622bd003117b (diff)
iwlwifi: don't fail if scan is issued too earlymaster-2008-09-24
This patch returns success and empty scan on scans requests that were rejected because issued too early. The cached bss list from previous scanning will be returned by mac80211. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-agn.c15
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-scan.c8
2 files changed, 12 insertions, 11 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index d069549a01c..7330890fd05 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -3190,9 +3190,9 @@ static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
{
- int ret;
unsigned long flags;
struct iwl_priv *priv = hw->priv;
+ int ret;
IWL_DEBUG_MAC80211("enter\n");
@@ -3211,20 +3211,27 @@ static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
goto out_unlock;
}
- /* we don't schedule scan within next_scan_jiffies period */
+ /* We don't schedule scan within next_scan_jiffies period.
+ * Avoid scanning during possible EAPOL exchange, return
+ * success immediately.
+ */
if (priv->next_scan_jiffies &&
time_after(priv->next_scan_jiffies, jiffies)) {
IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
- ret = -EAGAIN;
+ queue_work(priv->workqueue, &priv->scan_completed);
+ ret = 0;
goto out_unlock;
}
+
/* if we just finished scan ask for delay */
if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
- ret = -EAGAIN;
+ queue_work(priv->workqueue, &priv->scan_completed);
+ ret = 0;
goto out_unlock;
}
+
if (ssid_len) {
priv->one_direct_scan = 1;
priv->direct_ssid_len = min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
diff --git a/drivers/net/wireless/iwlwifi/iwl-scan.c b/drivers/net/wireless/iwlwifi/iwl-scan.c
index 09c264be049..bf855c35b0c 100644
--- a/drivers/net/wireless/iwlwifi/iwl-scan.c
+++ b/drivers/net/wireless/iwlwifi/iwl-scan.c
@@ -463,11 +463,6 @@ void iwl_init_scan_params(struct iwl_priv *priv)
int iwl_scan_initiate(struct iwl_priv *priv)
{
- if (priv->iw_mode == NL80211_IFTYPE_AP) {
- IWL_ERROR("APs don't scan.\n");
- return 0;
- }
-
if (!iwl_is_ready_rf(priv)) {
IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
return -EIO;
@@ -479,8 +474,7 @@ int iwl_scan_initiate(struct iwl_priv *priv)
}
if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
- IWL_DEBUG_SCAN("Scan request while abort pending. "
- "Queuing.\n");
+ IWL_DEBUG_SCAN("Scan request while abort pending\n");
return -EAGAIN;
}