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Diffstat (limited to 'net/ieee80211/softmac/ieee80211softmac_module.c')
-rw-r--r--net/ieee80211/softmac/ieee80211softmac_module.c90
1 files changed, 61 insertions, 29 deletions
diff --git a/net/ieee80211/softmac/ieee80211softmac_module.c b/net/ieee80211/softmac/ieee80211softmac_module.c
index 4b2e57d12418..addea1cf73ae 100644
--- a/net/ieee80211/softmac/ieee80211softmac_module.c
+++ b/net/ieee80211/softmac/ieee80211softmac_module.c
@@ -44,6 +44,7 @@ struct net_device *alloc_ieee80211softmac(int sizeof_priv)
softmac->ieee->handle_assoc_response = ieee80211softmac_handle_assoc_response;
softmac->ieee->handle_reassoc_request = ieee80211softmac_handle_reassoc_req;
softmac->ieee->handle_disassoc = ieee80211softmac_handle_disassoc;
+ softmac->ieee->handle_beacon = ieee80211softmac_handle_beacon;
softmac->scaninfo = NULL;
softmac->associnfo.scan_retry = IEEE80211SOFTMAC_ASSOC_SCAN_RETRY_LIMIT;
@@ -178,21 +179,14 @@ int ieee80211softmac_ratesinfo_rate_supported(struct ieee80211softmac_ratesinfo
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,
+u8 ieee80211softmac_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");
+ if (ri->count == 0)
return IEEE80211_CCK_RATE_1MB;
- }
for (i = ri->count - 1; i >= 0; i--) {
u8 rate = ri->rates[i];
@@ -208,36 +202,61 @@ static u8 highest_supported_rate(struct ieee80211softmac_device *mac,
/* If we haven't found a suitable rate by now, just trust the user */
return user_rate;
}
+EXPORT_SYMBOL_GPL(ieee80211softmac_highest_supported_rate);
+
+void ieee80211softmac_process_erp(struct ieee80211softmac_device *mac,
+ u8 erp_value)
+{
+ int use_protection;
+ int short_preamble;
+ u32 changes = 0;
+
+ /* Barker preamble mode */
+ short_preamble = ((erp_value & WLAN_ERP_BARKER_PREAMBLE) == 0
+ && mac->associnfo.short_preamble_available) ? 1 : 0;
+
+ /* Protection needed? */
+ use_protection = (erp_value & WLAN_ERP_USE_PROTECTION) != 0;
+
+ if (mac->bssinfo.short_preamble != short_preamble) {
+ changes |= IEEE80211SOFTMAC_BSSINFOCHG_SHORT_PREAMBLE;
+ mac->bssinfo.short_preamble = short_preamble;
+ }
+
+ if (mac->bssinfo.use_protection != use_protection) {
+ changes |= IEEE80211SOFTMAC_BSSINFOCHG_PROTECTION;
+ mac->bssinfo.use_protection = use_protection;
+ }
+
+ if (mac->bssinfo_change && changes)
+ mac->bssinfo_change(mac->dev, changes);
+}
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);
+ txrates->default_rate = ieee80211softmac_highest_supported_rate(mac, &mac->bssinfo.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);
+ txrates->mcast_rate = ieee80211softmac_highest_supported_rate(mac, &mac->bssinfo.supported_rates, 1);
if (mac->txrates_change)
- mac->txrates_change(mac->dev, change, &oldrates);
+ mac->txrates_change(mac->dev, change);
}
-void ieee80211softmac_init_txrates(struct ieee80211softmac_device *mac)
+void ieee80211softmac_init_bss(struct ieee80211softmac_device *mac)
{
struct ieee80211_device *ieee = mac->ieee;
u32 change = 0;
struct ieee80211softmac_txrates *txrates = &mac->txrates;
- struct ieee80211softmac_txrates oldrates;
+ struct ieee80211softmac_bss_info *bssinfo = &mac->bssinfo;
/* TODO: We need some kind of state machine to lower the default rates
* if we loose too many packets.
@@ -245,8 +264,6 @@ void ieee80211softmac_init_txrates(struct ieee80211softmac_device *mac)
/* Change the default txrate to the highest possible value.
* The txrate machine will lower it, if it is too high.
*/
- if (mac->txrates_change)
- oldrates = mac->txrates;
/* FIXME: We don't correctly handle backing down to lower
rates, so 801.11g devices start off at 11M for now. People
can manually change it if they really need to, but 11M is
@@ -272,7 +289,23 @@ void ieee80211softmac_init_txrates(struct ieee80211softmac_device *mac)
change |= IEEE80211SOFTMAC_TXRATECHG_MGT_MCAST;
if (mac->txrates_change)
- mac->txrates_change(mac->dev, change, &oldrates);
+ mac->txrates_change(mac->dev, change);
+
+ change = 0;
+
+ bssinfo->supported_rates.count = 0;
+ memset(bssinfo->supported_rates.rates, 0,
+ sizeof(bssinfo->supported_rates.rates));
+ change |= IEEE80211SOFTMAC_BSSINFOCHG_RATES;
+
+ bssinfo->short_preamble = 0;
+ change |= IEEE80211SOFTMAC_BSSINFOCHG_SHORT_PREAMBLE;
+
+ bssinfo->use_protection = 0;
+ change |= IEEE80211SOFTMAC_BSSINFOCHG_PROTECTION;
+
+ if (mac->bssinfo_change)
+ mac->bssinfo_change(mac->dev, change);
mac->running = 1;
}
@@ -282,7 +315,7 @@ void ieee80211softmac_start(struct net_device *dev)
struct ieee80211softmac_device *mac = ieee80211_priv(dev);
ieee80211softmac_start_check_rates(mac);
- ieee80211softmac_init_txrates(mac);
+ ieee80211softmac_init_bss(mac);
}
EXPORT_SYMBOL_GPL(ieee80211softmac_start);
@@ -335,7 +368,6 @@ u8 ieee80211softmac_lower_rate_delta(struct ieee80211softmac_device *mac, u8 rat
static void ieee80211softmac_add_txrates_badness(struct ieee80211softmac_device *mac,
int amount)
{
- struct ieee80211softmac_txrates oldrates;
u8 default_rate = mac->txrates.default_rate;
u8 default_fallback = mac->txrates.default_fallback;
u32 changes = 0;
@@ -348,8 +380,6 @@ printk("badness %d\n", mac->txrate_badness);
mac->txrate_badness += amount;
if (mac->txrate_badness <= -1000) {
/* Very small badness. Try a faster bitrate. */
- if (mac->txrates_change)
- memcpy(&oldrates, &mac->txrates, sizeof(oldrates));
default_rate = raise_rate(mac, default_rate);
changes |= IEEE80211SOFTMAC_TXRATECHG_DEFAULT;
default_fallback = get_fallback_rate(mac, default_rate);
@@ -358,8 +388,6 @@ printk("badness %d\n", mac->txrate_badness);
printk("Bitrate raised to %u\n", default_rate);
} else if (mac->txrate_badness >= 10000) {
/* Very high badness. Try a slower bitrate. */
- if (mac->txrates_change)
- memcpy(&oldrates, &mac->txrates, sizeof(oldrates));
default_rate = lower_rate(mac, default_rate);
changes |= IEEE80211SOFTMAC_TXRATECHG_DEFAULT;
default_fallback = get_fallback_rate(mac, default_rate);
@@ -372,7 +400,7 @@ printk("Bitrate lowered to %u\n", default_rate);
mac->txrates.default_fallback = default_fallback;
if (changes && mac->txrates_change)
- mac->txrates_change(mac->dev, changes, &oldrates);
+ mac->txrates_change(mac->dev, changes);
}
void ieee80211softmac_fragment_lost(struct net_device *dev,
@@ -416,7 +444,11 @@ ieee80211softmac_create_network(struct ieee80211softmac_device *mac,
memcpy(&softnet->supported_rates.rates[softnet->supported_rates.count], net->rates_ex, net->rates_ex_len);
softnet->supported_rates.count += net->rates_ex_len;
sort(softnet->supported_rates.rates, softnet->supported_rates.count, sizeof(softnet->supported_rates.rates[0]), rate_cmp, NULL);
-
+
+ /* we save the ERP value because it is needed at association time, and
+ * many AP's do not include an ERP IE in the association response. */
+ softnet->erp_value = net->erp_value;
+
softnet->capabilities = net->capability;
return softnet;
}
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-09 14:59:04 +0000