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-rw-r--r--net/ieee80211/softmac/ieee80211softmac_assoc.c19
-rw-r--r--net/ieee80211/softmac/ieee80211softmac_module.c117
-rw-r--r--net/ieee80211/softmac/ieee80211softmac_priv.h3
-rw-r--r--net/ieee80211/softmac/ieee80211softmac_wx.c4
4 files changed, 108 insertions, 35 deletions
diff --git a/net/ieee80211/softmac/ieee80211softmac_assoc.c b/net/ieee80211/softmac/ieee80211softmac_assoc.c
index 01f21334767..5d90b9a6ee5 100644
--- a/net/ieee80211/softmac/ieee80211softmac_assoc.c
+++ b/net/ieee80211/softmac/ieee80211softmac_assoc.c
@@ -96,6 +96,7 @@ ieee80211softmac_disassoc(struct ieee80211softmac_device *mac)
mac->associated = 0;
mac->associnfo.bssvalid = 0;
mac->associnfo.associating = 0;
+ ieee80211softmac_init_txrates(mac);
ieee80211softmac_call_events_locked(mac, IEEE80211SOFTMAC_EVENT_DISASSOCIATED, NULL);
spin_unlock_irqrestore(&mac->lock, flags);
}
@@ -118,24 +119,15 @@ ieee80211softmac_send_disassoc_req(struct ieee80211softmac_device *mac, u16 reas
static inline int
we_support_all_basic_rates(struct ieee80211softmac_device *mac, u8 *from, u8 from_len)
{
- int idx, search, found;
- u8 rate, search_rate;
+ int idx;
+ u8 rate;
for (idx = 0; idx < (from_len); idx++) {
rate = (from)[idx];
if (!(rate & IEEE80211_BASIC_RATE_MASK))
continue;
- found = 0;
rate &= ~IEEE80211_BASIC_RATE_MASK;
- for (search = 0; search < mac->ratesinfo.count; search++) {
- search_rate = mac->ratesinfo.rates[search];
- search_rate &= ~IEEE80211_BASIC_RATE_MASK;
- if (rate == search_rate) {
- found = 1;
- break;
- }
- }
- if (!found)
+ if (!ieee80211softmac_ratesinfo_rate_supported(&mac->ratesinfo, rate))
return 0;
}
return 1;
@@ -310,6 +302,9 @@ ieee80211softmac_associated(struct ieee80211softmac_device *mac,
struct ieee80211softmac_network *net)
{
mac->associnfo.associating = 0;
+ mac->associnfo.supported_rates = net->supported_rates;
+ ieee80211softmac_recalc_txrates(mac);
+
mac->associated = 1;
if (mac->set_bssid_filter)
mac->set_bssid_filter(mac->dev, net->bssid);
diff --git a/net/ieee80211/softmac/ieee80211softmac_module.c b/net/ieee80211/softmac/ieee80211softmac_module.c
index 6252be2c0db..4b2e57d1241 100644
--- a/net/ieee80211/softmac/ieee80211softmac_module.c
+++ b/net/ieee80211/softmac/ieee80211softmac_module.c
@@ -26,6 +26,7 @@
#include "ieee80211softmac_priv.h"
#include <linux/sort.h>
+#include <linux/etherdevice.h>
struct net_device *alloc_ieee80211softmac(int sizeof_priv)
{
@@ -61,14 +62,6 @@ struct net_device *alloc_ieee80211softmac(int sizeof_priv)
softmac->wait_for_scan = ieee80211softmac_wait_for_scan_implementation;
softmac->stop_scan = ieee80211softmac_stop_scan_implementation;
- //TODO: The mcast rate has to be assigned dynamically somewhere (in scanning, association. Not sure...)
- // It has to be set to the highest rate all stations in the current network can handle.
- softmac->txrates.mcast_rate = IEEE80211_CCK_RATE_1MB;
- softmac->txrates.mcast_fallback = IEEE80211_CCK_RATE_1MB;
- /* This is reassigned in ieee80211softmac_start to sane values. */
- softmac->txrates.default_rate = IEEE80211_CCK_RATE_1MB;
- softmac->txrates.default_fallback = IEEE80211_CCK_RATE_1MB;
-
/* to start with, we can't send anything ... */
netif_carrier_off(dev);
@@ -170,15 +163,82 @@ static void ieee80211softmac_start_check_rates(struct ieee80211softmac_device *m
}
}
-void ieee80211softmac_start(struct net_device *dev)
+int ieee80211softmac_ratesinfo_rate_supported(struct ieee80211softmac_ratesinfo *ri, u8 rate)
+{
+ int search;
+ u8 search_rate;
+
+ for (search = 0; search < ri->count; search++) {
+ search_rate = ri->rates[search];
+ search_rate &= ~IEEE80211_BASIC_RATE_MASK;
+ if (rate == search_rate)
+ return 1;
+ }
+
+ return 0;
+}
+
+/* Finds the highest rate which is:
+ * 1. Present in ri (optionally a basic rate)
+ * 2. Supported by the device
+ * 3. Less than or equal to the user-defined rate
+ */
+static u8 highest_supported_rate(struct ieee80211softmac_device *mac,
+ struct ieee80211softmac_ratesinfo *ri, int basic_only)
+{
+ u8 user_rate = mac->txrates.user_rate;
+ int i;
+
+ if (ri->count == 0) {
+ dprintk(KERN_ERR PFX "empty ratesinfo?\n");
+ return IEEE80211_CCK_RATE_1MB;
+ }
+
+ for (i = ri->count - 1; i >= 0; i--) {
+ u8 rate = ri->rates[i];
+ if (basic_only && !(rate & IEEE80211_BASIC_RATE_MASK))
+ continue;
+ rate &= ~IEEE80211_BASIC_RATE_MASK;
+ if (rate > user_rate)
+ continue;
+ if (ieee80211softmac_ratesinfo_rate_supported(&mac->ratesinfo, rate))
+ return rate;
+ }
+
+ /* If we haven't found a suitable rate by now, just trust the user */
+ return user_rate;
+}
+
+void ieee80211softmac_recalc_txrates(struct ieee80211softmac_device *mac)
+{
+ struct ieee80211softmac_txrates *txrates = &mac->txrates;
+ struct ieee80211softmac_txrates oldrates;
+ u32 change = 0;
+
+ if (mac->txrates_change)
+ oldrates = mac->txrates;
+
+ change |= IEEE80211SOFTMAC_TXRATECHG_DEFAULT;
+ txrates->default_rate = highest_supported_rate(mac, &mac->associnfo.supported_rates, 0);
+
+ change |= IEEE80211SOFTMAC_TXRATECHG_DEFAULT_FBACK;
+ txrates->default_fallback = lower_rate(mac, txrates->default_rate);
+
+ change |= IEEE80211SOFTMAC_TXRATECHG_MCAST;
+ txrates->mcast_rate = highest_supported_rate(mac, &mac->associnfo.supported_rates, 1);
+
+ if (mac->txrates_change)
+ mac->txrates_change(mac->dev, change, &oldrates);
+
+}
+
+void ieee80211softmac_init_txrates(struct ieee80211softmac_device *mac)
{
- struct ieee80211softmac_device *mac = ieee80211_priv(dev);
struct ieee80211_device *ieee = mac->ieee;
u32 change = 0;
+ struct ieee80211softmac_txrates *txrates = &mac->txrates;
struct ieee80211softmac_txrates oldrates;
- ieee80211softmac_start_check_rates(mac);
-
/* TODO: We need some kind of state machine to lower the default rates
* if we loose too many packets.
*/
@@ -193,22 +253,37 @@ void ieee80211softmac_start(struct net_device *dev)
more reliable. Note similar logic in
ieee80211softmac_wx_set_rate() */
if (ieee->modulation & IEEE80211_CCK_MODULATION) {
- mac->txrates.default_rate = IEEE80211_CCK_RATE_11MB;
- change |= IEEE80211SOFTMAC_TXRATECHG_DEFAULT;
- mac->txrates.default_fallback = IEEE80211_CCK_RATE_5MB;
- change |= IEEE80211SOFTMAC_TXRATECHG_DEFAULT_FBACK;
+ txrates->user_rate = IEEE80211_CCK_RATE_11MB;
} else if (ieee->modulation & IEEE80211_OFDM_MODULATION) {
- mac->txrates.default_rate = IEEE80211_OFDM_RATE_54MB;
- change |= IEEE80211SOFTMAC_TXRATECHG_DEFAULT;
- mac->txrates.default_fallback = IEEE80211_OFDM_RATE_24MB;
- change |= IEEE80211SOFTMAC_TXRATECHG_DEFAULT_FBACK;
+ txrates->user_rate = IEEE80211_OFDM_RATE_54MB;
} else
assert(0);
+
+ txrates->default_rate = IEEE80211_CCK_RATE_1MB;
+ change |= IEEE80211SOFTMAC_TXRATECHG_DEFAULT;
+
+ txrates->default_fallback = IEEE80211_CCK_RATE_1MB;
+ change |= IEEE80211SOFTMAC_TXRATECHG_DEFAULT_FBACK;
+
+ txrates->mcast_rate = IEEE80211_CCK_RATE_1MB;
+ change |= IEEE80211SOFTMAC_TXRATECHG_MCAST;
+
+ txrates->mgt_mcast_rate = IEEE80211_CCK_RATE_1MB;
+ change |= IEEE80211SOFTMAC_TXRATECHG_MGT_MCAST;
+
if (mac->txrates_change)
- mac->txrates_change(dev, change, &oldrates);
+ mac->txrates_change(mac->dev, change, &oldrates);
mac->running = 1;
}
+
+void ieee80211softmac_start(struct net_device *dev)
+{
+ struct ieee80211softmac_device *mac = ieee80211_priv(dev);
+
+ ieee80211softmac_start_check_rates(mac);
+ ieee80211softmac_init_txrates(mac);
+}
EXPORT_SYMBOL_GPL(ieee80211softmac_start);
void ieee80211softmac_stop(struct net_device *dev)
diff --git a/net/ieee80211/softmac/ieee80211softmac_priv.h b/net/ieee80211/softmac/ieee80211softmac_priv.h
index 5de0abf157e..fa1f8e3acfc 100644
--- a/net/ieee80211/softmac/ieee80211softmac_priv.h
+++ b/net/ieee80211/softmac/ieee80211softmac_priv.h
@@ -116,7 +116,10 @@ ieee80211softmac_get_network_by_essid(struct ieee80211softmac_device *mac,
struct ieee80211softmac_essid *essid);
/* Rates related */
+int ieee80211softmac_ratesinfo_rate_supported(struct ieee80211softmac_ratesinfo *ri, u8 rate);
u8 ieee80211softmac_lower_rate_delta(struct ieee80211softmac_device *mac, u8 rate, int delta);
+void ieee80211softmac_init_txrates(struct ieee80211softmac_device *mac);
+void ieee80211softmac_recalc_txrates(struct ieee80211softmac_device *mac);
static inline u8 lower_rate(struct ieee80211softmac_device *mac, u8 rate) {
return ieee80211softmac_lower_rate_delta(mac, rate, 1);
}
diff --git a/net/ieee80211/softmac/ieee80211softmac_wx.c b/net/ieee80211/softmac/ieee80211softmac_wx.c
index b7d83cd4d56..22aa6199185 100644
--- a/net/ieee80211/softmac/ieee80211softmac_wx.c
+++ b/net/ieee80211/softmac/ieee80211softmac_wx.c
@@ -211,8 +211,8 @@ ieee80211softmac_wx_set_rate(struct net_device *net_dev,
if (is_ofdm && !(ieee->modulation & IEEE80211_OFDM_MODULATION))
goto out_unlock;
- mac->txrates.default_rate = rate;
- mac->txrates.default_fallback = lower_rate(mac, rate);
+ mac->txrates.user_rate = rate;
+ ieee80211softmac_recalc_txrates(mac);
err = 0;
out_unlock:
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-17 22:48:10 +0000