static void ieee_init(struct ieee80211_device *ieee);
static void softmac_init(struct ieee80211softmac_device *sm);
+static void set_rts_cts_work(void *d);
+static void set_basic_rates_work(void *d);
static void housekeeping_init(struct zd_mac *mac);
static void housekeeping_enable(struct zd_mac *mac);
memset(mac, 0, sizeof(*mac));
spin_lock_init(&mac->lock);
mac->netdev = netdev;
+ INIT_WORK(&mac->set_rts_cts_work, set_rts_cts_work, mac);
+ INIT_WORK(&mac->set_basic_rates_work, set_basic_rates_work, mac);
ieee_init(ieee);
softmac_init(ieee80211_priv(netdev));
housekeeping_disable(mac);
ieee80211softmac_stop(netdev);
+ /* Ensure no work items are running or queued from this point */
+ cancel_delayed_work(&mac->set_rts_cts_work);
+ cancel_delayed_work(&mac->set_basic_rates_work);
+ flush_workqueue(zd_workqueue);
+ mac->updating_rts_rate = 0;
+ mac->updating_basic_rates = 0;
+
zd_chip_disable_hwint(chip);
zd_chip_switch_radio_off(chip);
zd_chip_disable_int(chip);
return regdomain;
}
+/* Fallback to lowest rate, if rate is unknown. */
+static u8 rate_to_zd_rate(u8 rate)
+{
+ switch (rate) {
+ case IEEE80211_CCK_RATE_2MB:
+ return ZD_CCK_RATE_2M;
+ case IEEE80211_CCK_RATE_5MB:
+ return ZD_CCK_RATE_5_5M;
+ case IEEE80211_CCK_RATE_11MB:
+ return ZD_CCK_RATE_11M;
+ case IEEE80211_OFDM_RATE_6MB:
+ return ZD_OFDM_RATE_6M;
+ case IEEE80211_OFDM_RATE_9MB:
+ return ZD_OFDM_RATE_9M;
+ case IEEE80211_OFDM_RATE_12MB:
+ return ZD_OFDM_RATE_12M;
+ case IEEE80211_OFDM_RATE_18MB:
+ return ZD_OFDM_RATE_18M;
+ case IEEE80211_OFDM_RATE_24MB:
+ return ZD_OFDM_RATE_24M;
+ case IEEE80211_OFDM_RATE_36MB:
+ return ZD_OFDM_RATE_36M;
+ case IEEE80211_OFDM_RATE_48MB:
+ return ZD_OFDM_RATE_48M;
+ case IEEE80211_OFDM_RATE_54MB:
+ return ZD_OFDM_RATE_54M;
+ }
+ return ZD_CCK_RATE_1M;
+}
+
+static u16 rate_to_cr_rate(u8 rate)
+{
+ switch (rate) {
+ case IEEE80211_CCK_RATE_2MB:
+ return CR_RATE_1M;
+ case IEEE80211_CCK_RATE_5MB:
+ return CR_RATE_5_5M;
+ case IEEE80211_CCK_RATE_11MB:
+ return CR_RATE_11M;
+ case IEEE80211_OFDM_RATE_6MB:
+ return CR_RATE_6M;
+ case IEEE80211_OFDM_RATE_9MB:
+ return CR_RATE_9M;
+ case IEEE80211_OFDM_RATE_12MB:
+ return CR_RATE_12M;
+ case IEEE80211_OFDM_RATE_18MB:
+ return CR_RATE_18M;
+ case IEEE80211_OFDM_RATE_24MB:
+ return CR_RATE_24M;
+ case IEEE80211_OFDM_RATE_36MB:
+ return CR_RATE_36M;
+ case IEEE80211_OFDM_RATE_48MB:
+ return CR_RATE_48M;
+ case IEEE80211_OFDM_RATE_54MB:
+ return CR_RATE_54M;
+ }
+ return CR_RATE_1M;
+}
+
+static void try_enable_tx(struct zd_mac *mac)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&mac->lock, flags);
+ if (mac->updating_rts_rate == 0 && mac->updating_basic_rates == 0)
+ netif_wake_queue(mac->netdev);
+ spin_unlock_irqrestore(&mac->lock, flags);
+}
+
+static void set_rts_cts_work(void *d)
+{
+ struct zd_mac *mac = d;
+ unsigned long flags;
+ u8 rts_rate;
+ unsigned int short_preamble;
+
+ mutex_lock(&mac->chip.mutex);
+
+ spin_lock_irqsave(&mac->lock, flags);
+ mac->updating_rts_rate = 0;
+ rts_rate = mac->rts_rate;
+ short_preamble = mac->short_preamble;
+ spin_unlock_irqrestore(&mac->lock, flags);
+
+ zd_chip_set_rts_cts_rate_locked(&mac->chip, rts_rate, short_preamble);
+ mutex_unlock(&mac->chip.mutex);
+
+ try_enable_tx(mac);
+}
+
+static void set_basic_rates_work(void *d)
+{
+ struct zd_mac *mac = d;
+ unsigned long flags;
+ u16 basic_rates;
+
+ mutex_lock(&mac->chip.mutex);
+
+ spin_lock_irqsave(&mac->lock, flags);
+ mac->updating_basic_rates = 0;
+ basic_rates = mac->basic_rates;
+ spin_unlock_irqrestore(&mac->lock, flags);
+
+ zd_chip_set_basic_rates_locked(&mac->chip, basic_rates);
+ mutex_unlock(&mac->chip.mutex);
+
+ try_enable_tx(mac);
+}
+
+static void bssinfo_change(struct net_device *netdev, u32 changes)
+{
+ struct zd_mac *mac = zd_netdev_mac(netdev);
+ struct ieee80211softmac_device *softmac = ieee80211_priv(netdev);
+ struct ieee80211softmac_bss_info *bssinfo = &softmac->bssinfo;
+ int need_set_rts_cts = 0;
+ int need_set_rates = 0;
+ u16 basic_rates;
+ unsigned long flags;
+
+ dev_dbg_f(zd_mac_dev(mac), "changes: %x\n", changes);
+
+ if (changes & IEEE80211SOFTMAC_BSSINFOCHG_SHORT_PREAMBLE) {
+ spin_lock_irqsave(&mac->lock, flags);
+ mac->short_preamble = bssinfo->short_preamble;
+ spin_unlock_irqrestore(&mac->lock, flags);
+ need_set_rts_cts = 1;
+ }
+
+ if (changes & IEEE80211SOFTMAC_BSSINFOCHG_RATES) {
+ /* Set RTS rate to highest available basic rate */
+ u8 rate = ieee80211softmac_highest_supported_rate(softmac,
+ &bssinfo->supported_rates, 1);
+ rate = rate_to_zd_rate(rate);
+
+ spin_lock_irqsave(&mac->lock, flags);
+ if (rate != mac->rts_rate) {
+ mac->rts_rate = rate;
+ need_set_rts_cts = 1;
+ }
+ spin_unlock_irqrestore(&mac->lock, flags);
+
+ /* Set basic rates */
+ need_set_rates = 1;
+ if (bssinfo->supported_rates.count == 0) {
+ /* Allow the device to be flexible */
+ basic_rates = CR_RATES_80211B | CR_RATES_80211G;
+ } else {
+ int i = 0;
+ basic_rates = 0;
+
+ for (i = 0; i < bssinfo->supported_rates.count; i++) {
+ u16 rate = bssinfo->supported_rates.rates[i];
+ if ((rate & IEEE80211_BASIC_RATE_MASK) == 0)
+ continue;
+
+ rate &= ~IEEE80211_BASIC_RATE_MASK;
+ basic_rates |= rate_to_cr_rate(rate);
+ }
+ }
+ spin_lock_irqsave(&mac->lock, flags);
+ mac->basic_rates = basic_rates;
+ spin_unlock_irqrestore(&mac->lock, flags);
+ }
+
+ /* Schedule any changes we made above */
+
+ spin_lock_irqsave(&mac->lock, flags);
+ if (need_set_rts_cts && !mac->updating_rts_rate) {
+ mac->updating_rts_rate = 1;
+ netif_stop_queue(mac->netdev);
+ queue_work(zd_workqueue, &mac->set_rts_cts_work);
+ }
+ if (need_set_rates && !mac->updating_basic_rates) {
+ mac->updating_basic_rates = 1;
+ netif_stop_queue(mac->netdev);
+ queue_work(zd_workqueue, &mac->set_basic_rates_work);
+ }
+ spin_unlock_irqrestore(&mac->lock, flags);
+}
+
static void set_channel(struct net_device *netdev, u8 channel)
{
struct zd_mac *mac = zd_netdev_mac(netdev);
return typed_rates[zd_rate & ZD_CS_RATE_MASK];
}
-/* Fallback to lowest rate, if rate is unknown. */
-static u8 rate_to_zd_rate(u8 rate)
-{
- switch (rate) {
- case IEEE80211_CCK_RATE_2MB:
- return ZD_CCK_RATE_2M;
- case IEEE80211_CCK_RATE_5MB:
- return ZD_CCK_RATE_5_5M;
- case IEEE80211_CCK_RATE_11MB:
- return ZD_CCK_RATE_11M;
- case IEEE80211_OFDM_RATE_6MB:
- return ZD_OFDM_RATE_6M;
- case IEEE80211_OFDM_RATE_9MB:
- return ZD_OFDM_RATE_9M;
- case IEEE80211_OFDM_RATE_12MB:
- return ZD_OFDM_RATE_12M;
- case IEEE80211_OFDM_RATE_18MB:
- return ZD_OFDM_RATE_18M;
- case IEEE80211_OFDM_RATE_24MB:
- return ZD_OFDM_RATE_24M;
- case IEEE80211_OFDM_RATE_36MB:
- return ZD_OFDM_RATE_36M;
- case IEEE80211_OFDM_RATE_48MB:
- return ZD_OFDM_RATE_48M;
- case IEEE80211_OFDM_RATE_54MB:
- return ZD_OFDM_RATE_54M;
- }
- return ZD_CCK_RATE_1M;
-}
-
int zd_mac_set_mode(struct zd_mac *mac, u32 mode)
{
struct ieee80211_device *ieee;
u16 ftype = WLAN_FC_GET_TYPE(le16_to_cpu(hdr->frame_ctl));
u8 rate, zd_rate;
int is_mgt = (ftype == IEEE80211_FTYPE_MGMT) != 0;
+ int is_multicast = is_multicast_ether_addr(hdr->addr1);
+ int short_preamble = ieee80211softmac_short_preamble_ok(softmac,
+ is_multicast, is_mgt);
+ int flags = 0;
- /* FIXME: 802.11a? short preamble? */
- rate = ieee80211softmac_suggest_txrate(softmac,
- is_multicast_ether_addr(hdr->addr1), is_mgt);
+ /* FIXME: 802.11a? */
+ rate = ieee80211softmac_suggest_txrate(softmac, is_multicast, is_mgt);
+
+ if (short_preamble)
+ flags |= R2M_SHORT_PREAMBLE;
zd_rate = rate_to_zd_rate(rate);
- cs->modulation = zd_rate_to_modulation(zd_rate, 0);
+ cs->modulation = zd_rate_to_modulation(zd_rate, flags);
}
static void cs_set_control(struct zd_mac *mac, struct zd_ctrlset *cs,
struct ieee80211_hdr_4addr *header)
{
+ struct ieee80211softmac_device *softmac = ieee80211_priv(mac->netdev);
unsigned int tx_length = le16_to_cpu(cs->tx_length);
u16 fctl = le16_to_cpu(header->frame_ctl);
u16 ftype = WLAN_FC_GET_TYPE(fctl);
u16 stype = WLAN_FC_GET_STYPE(fctl);
/*
- * CONTROL:
- * - start at 0x00
- * - if fragment 0, enable bit 0
+ * CONTROL TODO:
* - if backoff needed, enable bit 0
* - if burst (backoff not needed) disable bit 0
- * - if multicast, enable bit 1
- * - if PS-POLL frame, enable bit 2
- * - if in INDEPENDENT_BSS mode and zd1205_DestPowerSave, then enable
- * bit 4 (FIXME: wtf)
- * - if frag_len > RTS threshold, set bit 5 as long if it isnt
- * multicast or mgt
- * - if bit 5 is set, and we are in OFDM mode, unset bit 5 and set bit
- * 7
*/
cs->control = 0;
if (stype == IEEE80211_STYPE_PSPOLL)
cs->control |= ZD_CS_PS_POLL_FRAME;
+ /* Unicast data frames over the threshold should have RTS */
if (!is_multicast_ether_addr(header->addr1) &&
- ftype != IEEE80211_FTYPE_MGMT &&
- tx_length > zd_netdev_ieee80211(mac->netdev)->rts)
- {
- /* FIXME: check the logic */
- if (ZD_CS_TYPE(cs->modulation) == ZD_CS_OFDM) {
- /* 802.11g */
- cs->control |= ZD_CS_SELF_CTS;
- } else { /* 802.11b */
- cs->control |= ZD_CS_RTS;
- }
+ ftype != IEEE80211_FTYPE_MGMT &&
+ tx_length > zd_netdev_ieee80211(mac->netdev)->rts)
+ cs->control |= ZD_CS_RTS;
+
+ /* Use CTS-to-self protection if required */
+ if (ZD_CS_TYPE(cs->modulation) == ZD_CS_OFDM &&
+ ieee80211softmac_protection_needed(softmac)) {
+ /* FIXME: avoid sending RTS *and* self-CTS, is that correct? */
+ cs->control &= ~ZD_CS_RTS;
+ cs->control |= ZD_CS_SELF_CTS;
}
/* FIXME: Management frame? */
static void softmac_init(struct ieee80211softmac_device *sm)
{
sm->set_channel = set_channel;
+ sm->bssinfo_change = bssinfo_change;
}
struct iw_statistics *zd_mac_get_wireless_stats(struct net_device *ndev)
projects / linux-2.6 / commitdiff