[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>
diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index b44c9f9..72467c8 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -92,14 +92,6 @@
module_param_string(fwpostfix, modparam_fwpostfix, 16, 0444);
MODULE_PARM_DESC(fwpostfix, "Postfix for the .fw files to load.");
-static int modparam_mon_keep_bad;
-module_param_named(mon_keep_bad, modparam_mon_keep_bad, int, 0444);
-MODULE_PARM_DESC(mon_keep_bad, "Keep bad frames in monitor mode");
-
-static int modparam_mon_keep_badplcp;
-module_param_named(mon_keep_badplcp, modparam_mon_keep_bad, int, 0444);
-MODULE_PARM_DESC(mon_keep_badplcp, "Keep frames with bad PLCP in monitor mode");
-
static int modparam_hwpctl;
module_param_named(hwpctl, modparam_hwpctl, int, 0444);
MODULE_PARM_DESC(hwpctl, "Enable hardware-side power control (default off)");
@@ -561,15 +553,10 @@
}
}
-static void b43_upload_card_macaddress(struct b43_wldev *dev,
- const u8 * mac_addr)
+static void b43_upload_card_macaddress(struct b43_wldev *dev)
{
- if (mac_addr)
- memcpy(dev->wl->mac_addr, mac_addr, ETH_ALEN);
- else
- memset(dev->wl->mac_addr, 0, ETH_ALEN);
b43_write_mac_bssid_templates(dev);
- b43_macfilter_set(dev, B43_MACFILTER_SELF, mac_addr);
+ b43_macfilter_set(dev, B43_MACFILTER_SELF, dev->wl->mac_addr);
}
static void b43_set_slot_time(struct b43_wldev *dev, u16 slot_time)
@@ -2052,33 +2039,25 @@
ctl &= ~B43_MACCTL_KEEP_BADPLCP;
ctl &= ~B43_MACCTL_KEEP_BAD;
ctl &= ~B43_MACCTL_PROMISC;
+ ctl &= ~B43_MACCTL_BEACPROMISC;
ctl |= B43_MACCTL_INFRA;
- if (wl->operating) {
- switch (wl->if_type) {
- case IEEE80211_IF_TYPE_AP:
- ctl |= B43_MACCTL_AP;
- break;
- case IEEE80211_IF_TYPE_IBSS:
- ctl &= ~B43_MACCTL_INFRA;
- break;
- case IEEE80211_IF_TYPE_STA:
- case IEEE80211_IF_TYPE_MNTR:
- case IEEE80211_IF_TYPE_WDS:
- break;
- default:
- B43_WARN_ON(1);
- }
- }
- if (wl->monitor) {
+ if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP))
+ ctl |= B43_MACCTL_AP;
+ else if (b43_is_mode(wl, IEEE80211_IF_TYPE_IBSS))
+ ctl &= ~B43_MACCTL_INFRA;
+
+ if (wl->filter_flags & FIF_CONTROL)
ctl |= B43_MACCTL_KEEP_CTL;
- if (modparam_mon_keep_bad)
- ctl |= B43_MACCTL_KEEP_BAD;
- if (modparam_mon_keep_badplcp)
- ctl |= B43_MACCTL_KEEP_BADPLCP;
- }
- if (wl->promisc)
+ if (wl->filter_flags & FIF_FCSFAIL)
+ ctl |= B43_MACCTL_KEEP_BAD;
+ if (wl->filter_flags & FIF_PLCPFAIL)
+ ctl |= B43_MACCTL_KEEP_BADPLCP;
+ if (wl->filter_flags & FIF_PROMISC_IN_BSS)
ctl |= B43_MACCTL_PROMISC;
+ if (wl->filter_flags & FIF_BCN_PRBRESP_PROMISC)
+ ctl |= B43_MACCTL_BEACPROMISC;
+
/* Workaround: On old hardware the HW-MAC-address-filter
* doesn't work properly, so always run promisc in filter
* it in software. */
@@ -2254,9 +2233,6 @@
& ~B43_MACCTL_INFRA);
b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
| B43_MACCTL_INFRA);
- /* Let beacons come through */
- b43_write32(dev, B43_MMIO_MACCTL, b43_read32(dev, B43_MMIO_MACCTL)
- | B43_MACCTL_BEACPROMISC);
if (b43_using_pio(dev)) {
b43_write32(dev, 0x0210, 0x00000100);
@@ -2899,9 +2875,9 @@
return err;
}
-static int b43_dev_set_key(struct ieee80211_hw *hw,
- set_key_cmd cmd, const u8 *local_addr,
- const u8 *addr, struct ieee80211_key_conf *key)
+static int b43_dev_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
+ const u8 *local_addr, const u8 *addr,
+ struct ieee80211_key_conf *key)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
@@ -3003,21 +2979,40 @@
return err;
}
-static void b43_set_multicast_list(struct ieee80211_hw *hw,
- unsigned short netflags, int mc_count)
+static void b43_configure_filter(struct ieee80211_hw *hw,
+ unsigned int changed, unsigned int *fflags,
+ int mc_count, struct dev_addr_list *mc_list)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
unsigned long flags;
- if (!dev)
+ if (!dev) {
+ *fflags = 0;
return;
- spin_lock_irqsave(&wl->irq_lock, flags);
- if (wl->promisc != !!(netflags & IFF_PROMISC)) {
- wl->promisc = !!(netflags & IFF_PROMISC);
- if (b43_status(dev) >= B43_STAT_INITIALIZED)
- b43_adjust_opmode(dev);
}
+
+ spin_lock_irqsave(&wl->irq_lock, flags);
+ *fflags &= FIF_PROMISC_IN_BSS |
+ FIF_ALLMULTI |
+ FIF_FCSFAIL |
+ FIF_PLCPFAIL |
+ FIF_CONTROL |
+ FIF_OTHER_BSS |
+ FIF_BCN_PRBRESP_PROMISC;
+
+ changed &= FIF_PROMISC_IN_BSS |
+ FIF_ALLMULTI |
+ FIF_FCSFAIL |
+ FIF_PLCPFAIL |
+ FIF_CONTROL |
+ FIF_OTHER_BSS |
+ FIF_BCN_PRBRESP_PROMISC;
+
+ wl->filter_flags = *fflags;
+
+ if (changed && b43_status(dev) >= B43_STAT_INITIALIZED)
+ b43_adjust_opmode(dev);
spin_unlock_irqrestore(&wl->irq_lock, flags);
}
@@ -3032,21 +3027,19 @@
return -ENODEV;
mutex_lock(&wl->mutex);
spin_lock_irqsave(&wl->irq_lock, flags);
- if (conf->type != IEEE80211_IF_TYPE_MNTR) {
- B43_WARN_ON(wl->if_id != if_id);
- if (conf->bssid)
- memcpy(wl->bssid, conf->bssid, ETH_ALEN);
- else
- memset(wl->bssid, 0, ETH_ALEN);
- if (b43_status(dev) >= B43_STAT_INITIALIZED) {
- if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP)) {
- B43_WARN_ON(conf->type != IEEE80211_IF_TYPE_AP);
- b43_set_ssid(dev, conf->ssid, conf->ssid_len);
- if (conf->beacon)
- b43_refresh_templates(dev, conf->beacon);
- }
- b43_write_mac_bssid_templates(dev);
+ B43_WARN_ON(wl->if_id != if_id);
+ if (conf->bssid)
+ memcpy(wl->bssid, conf->bssid, ETH_ALEN);
+ else
+ memset(wl->bssid, 0, ETH_ALEN);
+ if (b43_status(dev) >= B43_STAT_INITIALIZED) {
+ if (b43_is_mode(wl, IEEE80211_IF_TYPE_AP)) {
+ B43_WARN_ON(conf->type != IEEE80211_IF_TYPE_AP);
+ b43_set_ssid(dev, conf->ssid, conf->ssid_len);
+ if (conf->beacon)
+ b43_refresh_templates(dev, conf->beacon);
}
+ b43_write_mac_bssid_templates(dev);
}
spin_unlock_irqrestore(&wl->irq_lock, flags);
mutex_unlock(&wl->mutex);
@@ -3472,7 +3465,8 @@
ssb_bus_powerup(bus, 1); /* Enable dynamic PCTL */
memset(wl->bssid, 0, ETH_ALEN);
- b43_upload_card_macaddress(dev, NULL);
+ memset(wl->mac_addr, 0, ETH_ALEN);
+ b43_upload_card_macaddress(dev);
b43_security_init(dev);
b43_rng_init(wl);
@@ -3502,46 +3496,34 @@
struct b43_wldev *dev;
unsigned long flags;
int err = -EOPNOTSUPP;
- int did_init = 0;
+
+ /* TODO: allow WDS/AP devices to coexist */
+
+ if (conf->type != IEEE80211_IF_TYPE_AP &&
+ conf->type != IEEE80211_IF_TYPE_STA &&
+ conf->type != IEEE80211_IF_TYPE_WDS &&
+ conf->type != IEEE80211_IF_TYPE_IBSS)
+ return -EOPNOTSUPP;
mutex_lock(&wl->mutex);
- if ((conf->type != IEEE80211_IF_TYPE_MNTR) && wl->operating)
+ if (wl->operating)
goto out_mutex_unlock;
b43dbg(wl, "Adding Interface type %d\n", conf->type);
dev = wl->current_dev;
- if (b43_status(dev) < B43_STAT_INITIALIZED) {
- err = b43_wireless_core_init(dev);
- if (err)
- goto out_mutex_unlock;
- did_init = 1;
- }
- if (b43_status(dev) < B43_STAT_STARTED) {
- err = b43_wireless_core_start(dev);
- if (err) {
- if (did_init)
- b43_wireless_core_exit(dev);
- goto out_mutex_unlock;
- }
- }
+ wl->operating = 1;
+ wl->if_id = conf->if_id;
+ wl->if_type = conf->type;
+ memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
spin_lock_irqsave(&wl->irq_lock, flags);
- switch (conf->type) {
- case IEEE80211_IF_TYPE_MNTR:
- wl->monitor++;
- break;
- default:
- wl->operating = 1;
- wl->if_id = conf->if_id;
- wl->if_type = conf->type;
- b43_upload_card_macaddress(dev, conf->mac_addr);
- }
b43_adjust_opmode(dev);
+ b43_upload_card_macaddress(dev);
spin_unlock_irqrestore(&wl->irq_lock, flags);
err = 0;
- out_mutex_unlock:
+ out_mutex_unlock:
mutex_unlock(&wl->mutex);
return err;
@@ -3551,34 +3533,67 @@
struct ieee80211_if_init_conf *conf)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
- struct b43_wldev *dev;
+ struct b43_wldev *dev = wl->current_dev;
unsigned long flags;
b43dbg(wl, "Removing Interface type %d\n", conf->type);
mutex_lock(&wl->mutex);
- if (conf->type == IEEE80211_IF_TYPE_MNTR) {
- wl->monitor--;
- B43_WARN_ON(wl->monitor < 0);
- } else {
- B43_WARN_ON(!wl->operating);
- wl->operating = 0;
+
+ B43_WARN_ON(!wl->operating);
+ B43_WARN_ON(wl->if_id != conf->if_id);
+
+ wl->operating = 0;
+
+ spin_lock_irqsave(&wl->irq_lock, flags);
+ b43_adjust_opmode(dev);
+ memset(wl->mac_addr, 0, ETH_ALEN);
+ b43_upload_card_macaddress(dev);
+ spin_unlock_irqrestore(&wl->irq_lock, flags);
+
+ mutex_unlock(&wl->mutex);
+}
+
+static int b43_start(struct ieee80211_hw *hw)
+{
+ struct b43_wl *wl = hw_to_b43_wl(hw);
+ struct b43_wldev *dev = wl->current_dev;
+ int did_init = 0;
+ int err;
+
+ mutex_lock(&wl->mutex);
+
+ if (b43_status(dev) < B43_STAT_INITIALIZED) {
+ err = b43_wireless_core_init(dev);
+ if (err)
+ goto out_mutex_unlock;
+ did_init = 1;
}
- dev = wl->current_dev;
- if (!wl->operating && wl->monitor == 0) {
- /* No interface left. */
- if (b43_status(dev) >= B43_STAT_STARTED)
- b43_wireless_core_stop(dev);
- b43_wireless_core_exit(dev);
- } else {
- /* Just monitor interfaces left. */
- spin_lock_irqsave(&wl->irq_lock, flags);
- b43_adjust_opmode(dev);
- if (!wl->operating)
- b43_upload_card_macaddress(dev, NULL);
- spin_unlock_irqrestore(&wl->irq_lock, flags);
+ if (b43_status(dev) < B43_STAT_STARTED) {
+ err = b43_wireless_core_start(dev);
+ if (err) {
+ if (did_init)
+ b43_wireless_core_exit(dev);
+ goto out_mutex_unlock;
+ }
}
+
+ out_mutex_unlock:
+ mutex_unlock(&wl->mutex);
+
+ return err;
+}
+
+void b43_stop(struct ieee80211_hw *hw)
+{
+ struct b43_wl *wl = hw_to_b43_wl(hw);
+ struct b43_wldev *dev = wl->current_dev;
+
+ mutex_lock(&wl->mutex);
+ if (b43_status(dev) >= B43_STAT_STARTED)
+ b43_wireless_core_stop(dev);
+ b43_wireless_core_exit(dev);
mutex_unlock(&wl->mutex);
}
@@ -3589,10 +3604,12 @@
.remove_interface = b43_remove_interface,
.config = b43_dev_config,
.config_interface = b43_config_interface,
- .set_multicast_list = b43_set_multicast_list,
+ .configure_filter = b43_configure_filter,
.set_key = b43_dev_set_key,
.get_stats = b43_get_stats,
.get_tx_stats = b43_get_tx_stats,
+ .start = b43_start,
+ .stop = b43_stop,
};
/* Hard-reset the chip. Do not call this directly.
@@ -3930,8 +3947,7 @@
}
/* fill hw info */
- hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE |
- IEEE80211_HW_MONITOR_DURING_OPER;
+ hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
hw->max_signal = 100;
hw->max_rssi = -110;
hw->max_noise = -110;