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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 /drivers
parent55d6a3cd0cc85ed90c39cf32e16f622bd003117b (diff)
iwlwifi: don't fail if scan is issued too early
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>
Diffstat (limited to 'drivers')
-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;
}