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authorJohannes Berg <johannes@sipsolutions.net>2007-09-17 01:29:23 -0400
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:52:57 -0700
commit4150c57212ad134765dd78c654a4b9906252b66d (patch)
treec37ab7a3f75532a623ed00339782d769514422d2 /drivers/net/wireless/iwlwifi/iwl4965-base.c
parent070ac3a2651e3c1c4d277c5f1981517427c386a7 (diff)
[PATCH] mac80211: revamp interface and filter configuration
Drivers are currently supposed to keep track of monitor interfaces if they allow so-called "hard" monitor, and they are also supposed to keep track of multicast etc. This patch changes that, replaces the set_multicast_list() callback with a new configure_filter() callback that takes filter flags (FIF_*) instead of interface flags (IFF_*). For a driver, this means it should open the filter as much as necessary to get all frames requested by the filter flags. Accordingly, the filter flags are named "positively", e.g. FIF_ALLMULTI. Multicast filtering is a bit special in that drivers that have no multicast address filters need to allow multicast frames through when either the FIF_ALLMULTI flag is set or when the mc_count value is positive. At the same time, drivers are no longer notified about monitor interfaces at all, this means they now need to implement the start() and stop() callbacks and the new change_filter_flags() callback. Also, the start()/stop() ordering changed, start() is now called *before* any add_interface() as it really should be, and stop() after any remove_interface(). The patch also changes the behaviour of setting the bssid to multicast for scanning when IEEE80211_HW_NO_PROBE_FILTERING is set; the IEEE80211_HW_NO_PROBE_FILTERING flag is removed and the filter flag FIF_BCN_PRBRESP_PROMISC introduced. This is a lot more efficient for hardware like b43 that supports it and other hardware can still set the BSSID to all-ones. Driver modifications by Johannes Berg (b43 & iwlwifi), Michael Wu (rtl8187, adm8211, and p54), Larry Finger (b43legacy), and Ivo van Doorn (rt2x00). Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Michael Wu <flamingice@sourmilk.net> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl4965-base.c')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl4965-base.c26
1 files changed, 21 insertions, 5 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c
index 61500a20929..7b9227c562b 100644
--- a/drivers/net/wireless/iwlwifi/iwl4965-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c
@@ -7252,7 +7252,7 @@ static void iwl_bg_scan_completed(struct work_struct *work)
*
*****************************************************************************/
-static int iwl_mac_open(struct ieee80211_hw *hw)
+static int iwl_mac_start(struct ieee80211_hw *hw)
{
struct iwl_priv *priv = hw->priv;
@@ -7271,7 +7271,7 @@ static int iwl_mac_open(struct ieee80211_hw *hw)
return 0;
}
-static int iwl_mac_stop(struct ieee80211_hw *hw)
+static void iwl_mac_stop(struct ieee80211_hw *hw)
{
struct iwl_priv *priv = hw->priv;
@@ -7280,8 +7280,6 @@ static int iwl_mac_stop(struct ieee80211_hw *hw)
/*netif_stop_queue(dev); */
flush_workqueue(priv->workqueue);
IWL_DEBUG_MAC80211("leave\n");
-
- return 0;
}
static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
@@ -7528,8 +7526,13 @@ static int iwl_mac_config_interface(struct ieee80211_hw *hw, int if_id,
IWL_DEBUG_MAC80211("bssid: %s\n",
print_mac(mac, conf->bssid));
+/*
+ * very dubious code was here; the probe filtering flag is never set:
+ *
if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
!(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
+ */
+ if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) {
IWL_DEBUG_MAC80211("leave - scanning\n");
mutex_unlock(&priv->mutex);
return 0;
@@ -7604,6 +7607,18 @@ static int iwl_mac_config_interface(struct ieee80211_hw *hw, int if_id,
return 0;
}
+static void iwl_configure_filter(struct ieee80211_hw *hw,
+ unsigned int changed_flags,
+ unsigned int *total_flags,
+ int mc_count, struct dev_addr_list *mc_list)
+{
+ /*
+ * XXX: dummy
+ * see also iwl_connection_init_rx_config
+ */
+ *total_flags = 0;
+}
+
static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
struct ieee80211_if_init_conf *conf)
{
@@ -8852,12 +8867,13 @@ static struct attribute_group iwl_attribute_group = {
static struct ieee80211_ops iwl_hw_ops = {
.tx = iwl_mac_tx,
- .open = iwl_mac_open,
+ .start = iwl_mac_start,
.stop = iwl_mac_stop,
.add_interface = iwl_mac_add_interface,
.remove_interface = iwl_mac_remove_interface,
.config = iwl_mac_config,
.config_interface = iwl_mac_config_interface,
+ .configure_filter = iwl_configure_filter,
.set_key = iwl_mac_set_key,
.get_stats = iwl_mac_get_stats,
.get_tx_stats = iwl_mac_get_tx_stats,