From e5ea92a7528d304e8e327d0d261653e98b163e8a Mon Sep 17 00:00:00 2001 From: Christian Lamparter Date: Sat, 18 Oct 2008 23:19:00 +0200 Subject: [PATCH] p54: AP & Ad-hoc testing This patch finally adds all necessary code to test Ad-hoc & AP mode with p54. Signed-off-by: Christian Lamparter Signed-off-by: John W. Linville --- drivers/net/wireless/p54/p54.h | 1 + drivers/net/wireless/p54/p54common.c | 245 ++++++++++++++++++++++++++++++++++- 2 files changed, 241 insertions(+), 5 deletions(-) diff --git a/drivers/net/wireless/p54/p54.h b/drivers/net/wireless/p54/p54.h index eb69b904f651..b585ff65e0e4 100644 --- a/drivers/net/wireless/p54/p54.h +++ b/drivers/net/wireless/p54/p54.h @@ -108,6 +108,7 @@ struct p54_common { struct timer_list stats_timer; struct completion stats_comp; struct sk_buff *cached_stats; + struct sk_buff *cached_beacon; int noise; void *eeprom; struct completion eeprom_comp; diff --git a/drivers/net/wireless/p54/p54common.c b/drivers/net/wireless/p54/p54common.c index e93bca8263cd..8423c430b71b 100644 --- a/drivers/net/wireless/p54/p54common.c +++ b/drivers/net/wireless/p54/p54common.c @@ -626,6 +626,12 @@ static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb) __skb_unlink(entry, &priv->tx_queue); spin_unlock_irqrestore(&priv->tx_queue.lock, flags); + if (unlikely(entry == priv->cached_beacon)) { + kfree_skb(entry); + priv->cached_beacon = NULL; + goto out; + } + /* * Clear manually, ieee80211_tx_info_clear_status would * clear the counts too and we need them. @@ -711,6 +717,35 @@ static void p54_rx_stats(struct ieee80211_hw *dev, struct sk_buff *skb) mod_timer(&priv->stats_timer, jiffies + 5 * HZ); } +static void p54_rx_trap(struct ieee80211_hw *dev, struct sk_buff *skb) +{ + struct p54_hdr *hdr = (struct p54_hdr *) skb->data; + struct p54_trap *trap = (struct p54_trap *) hdr->data; + u16 event = le16_to_cpu(trap->event); + u16 freq = le16_to_cpu(trap->frequency); + + switch (event) { + case P54_TRAP_BEACON_TX: + break; + case P54_TRAP_RADAR: + printk(KERN_INFO "%s: radar (freq:%d MHz)\n", + wiphy_name(dev->wiphy), freq); + break; + case P54_TRAP_NO_BEACON: + break; + case P54_TRAP_SCAN: + break; + case P54_TRAP_TBTT: + break; + case P54_TRAP_TIMER: + break; + default: + printk(KERN_INFO "%s: received event:%x freq:%d\n", + wiphy_name(dev->wiphy), event, freq); + break; + } +} + static int p54_rx_control(struct ieee80211_hw *dev, struct sk_buff *skb) { struct p54_hdr *hdr = (struct p54_hdr *) skb->data; @@ -719,6 +754,9 @@ static int p54_rx_control(struct ieee80211_hw *dev, struct sk_buff *skb) case P54_CONTROL_TYPE_TXDONE: p54_rx_frame_sent(dev, skb); break; + case P54_CONTROL_TYPE_TRAP: + p54_rx_trap(dev, skb); + break; case P54_CONTROL_TYPE_BBP: break; case P54_CONTROL_TYPE_STAT_READBACK: @@ -902,6 +940,64 @@ free: } EXPORT_SYMBOL_GPL(p54_read_eeprom); +static int p54_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta, + bool set) +{ + struct p54_common *priv = dev->priv; + struct sk_buff *skb; + struct p54_tim *tim; + + skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, + sizeof(struct p54_hdr) + sizeof(*tim), + P54_CONTROL_TYPE_TIM, GFP_KERNEL); + if (!skb) + return -ENOMEM; + + tim = (struct p54_tim *) skb_put(skb, sizeof(*tim)); + tim->count = 1; + tim->entry[0] = cpu_to_le16(set ? (sta->aid | 0x8000) : sta->aid); + priv->tx(dev, skb, 1); + return 0; +} + +static int p54_sta_unlock(struct ieee80211_hw *dev, u8 *addr) +{ + struct p54_common *priv = dev->priv; + struct sk_buff *skb; + struct p54_sta_unlock *sta; + + skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, + sizeof(struct p54_hdr) + sizeof(*sta), + P54_CONTROL_TYPE_PSM_STA_UNLOCK, GFP_ATOMIC); + if (!skb) + return -ENOMEM; + + sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta)); + memcpy(sta->addr, addr, ETH_ALEN); + priv->tx(dev, skb, 1); + return 0; +} + +static int p54_tx_cancel(struct ieee80211_hw *dev, struct sk_buff *entry) +{ + struct p54_common *priv = dev->priv; + struct sk_buff *skb; + struct p54_hdr *hdr; + struct p54_txcancel *cancel; + + skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, + sizeof(struct p54_hdr) + sizeof(*cancel), + P54_CONTROL_TYPE_TXCANCEL, GFP_ATOMIC); + if (!skb) + return -ENOMEM; + + hdr = (void *)entry->data; + cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel)); + cancel->req_id = hdr->req_id; + priv->tx(dev, skb, 1); + return 0; +} + static int p54_tx_fill(struct ieee80211_hw *dev, struct sk_buff *skb, struct ieee80211_tx_info *info, u8 *queue, size_t *extra_len, u16 *flags, u16 *aid) @@ -982,6 +1078,17 @@ static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb) padding = (unsigned long)(skb->data - (sizeof(*hdr) + sizeof(*txhdr))) & 3; len = skb->len; + if (info->flags & IEEE80211_TX_CTL_CLEAR_PS_FILT) { + if (info->control.sta) + if (p54_sta_unlock(dev, info->control.sta->addr)) { + if (current_queue) { + current_queue->len--; + current_queue->count--; + } + return NETDEV_TX_BUSY; + } + } + txhdr = (struct p54_tx_data *) skb_push(skb, sizeof(*txhdr) + padding); hdr = (struct p54_hdr *) skb_push(skb, sizeof(*hdr)); @@ -1295,6 +1402,88 @@ static int p54_init_stats(struct ieee80211_hw *dev) return 0; } +static int p54_beacon_tim(struct sk_buff *skb) +{ + /* + * the good excuse for this mess is ... the firmware. + * The dummy TIM MUST be at the end of the beacon frame, + * because it'll be overwritten! + */ + + struct ieee80211_mgmt *mgmt = (void *)skb->data; + u8 *pos, *end; + + if (skb->len <= sizeof(mgmt)) { + printk(KERN_ERR "p54: beacon is too short!\n"); + return -EINVAL; + } + + pos = (u8 *)mgmt->u.beacon.variable; + end = skb->data + skb->len; + while (pos < end) { + if (pos + 2 + pos[1] > end) { + printk(KERN_ERR "p54: parsing beacon failed\n"); + return -EINVAL; + } + + if (pos[0] == WLAN_EID_TIM) { + u8 dtim_len = pos[1]; + u8 dtim_period = pos[3]; + u8 *next = pos + 2 + dtim_len; + + if (dtim_len < 3) { + printk(KERN_ERR "p54: invalid dtim len!\n"); + return -EINVAL; + } + memmove(pos, next, end - next); + + if (dtim_len > 3) + skb_trim(skb, skb->len - (dtim_len - 3)); + + pos = end - (dtim_len + 2); + + /* add the dummy at the end */ + pos[0] = WLAN_EID_TIM; + pos[1] = 3; + pos[2] = 0; + pos[3] = dtim_period; + pos[4] = 0; + return 0; + } + pos += 2 + pos[1]; + } + return 0; +} + +static int p54_beacon_update(struct ieee80211_hw *dev, + struct ieee80211_vif *vif) +{ + struct p54_common *priv = dev->priv; + struct sk_buff *beacon; + int ret; + + if (priv->cached_beacon) { + p54_tx_cancel(dev, priv->cached_beacon); + /* wait for the last beacon the be freed */ + msleep(10); + } + + beacon = ieee80211_beacon_get(dev, vif); + if (!beacon) + return -ENOMEM; + ret = p54_beacon_tim(beacon); + if (ret) + return ret; + ret = p54_tx(dev, beacon); + if (ret) + return ret; + priv->cached_beacon = beacon; + priv->tsf_high32 = 0; + priv->tsf_low32 = 0; + + return 0; +} + static int p54_start(struct ieee80211_hw *dev) { struct p54_common *priv = dev->priv; @@ -1325,9 +1514,14 @@ static void p54_stop(struct ieee80211_hw *dev) del_timer(&priv->stats_timer); p54_free_skb(dev, priv->cached_stats); priv->cached_stats = NULL; + if (priv->cached_beacon) + p54_tx_cancel(dev, priv->cached_beacon); + while ((skb = skb_dequeue(&priv->tx_queue))) kfree_skb(skb); + kfree(priv->cached_beacon); + priv->cached_beacon = NULL; priv->stop(dev); priv->tsf_high32 = priv->tsf_low32 = 0; priv->mode = NL80211_IFTYPE_UNSPECIFIED; @@ -1347,6 +1541,8 @@ static int p54_add_interface(struct ieee80211_hw *dev, switch (conf->type) { case NL80211_IFTYPE_STATION: + case NL80211_IFTYPE_ADHOC: + case NL80211_IFTYPE_AP: priv->mode = conf->type; break; default: @@ -1362,6 +1558,12 @@ static int p54_add_interface(struct ieee80211_hw *dev, case NL80211_IFTYPE_STATION: p54_setup_mac(dev, P54_FILTER_TYPE_STATION, NULL); break; + case NL80211_IFTYPE_AP: + p54_setup_mac(dev, P54_FILTER_TYPE_AP, priv->mac_addr); + break; + case NL80211_IFTYPE_ADHOC: + p54_setup_mac(dev, P54_FILTER_TYPE_IBSS, NULL); + break; default: BUG(); /* impossible */ break; @@ -1379,6 +1581,8 @@ static void p54_remove_interface(struct ieee80211_hw *dev, struct p54_common *priv = dev->priv; mutex_lock(&priv->conf_mutex); + if (priv->cached_beacon) + p54_tx_cancel(dev, priv->cached_beacon); p54_setup_mac(dev, P54_FILTER_TYPE_NONE, NULL); priv->mode = NL80211_IFTYPE_MONITOR; memset(priv->mac_addr, 0, ETH_ALEN); @@ -1406,13 +1610,41 @@ static int p54_config_interface(struct ieee80211_hw *dev, struct ieee80211_if_conf *conf) { struct p54_common *priv = dev->priv; + int ret = 0; mutex_lock(&priv->conf_mutex); - p54_setup_mac(dev, P54_FILTER_TYPE_STATION, conf->bssid); - p54_set_leds(dev, 1, !is_multicast_ether_addr(conf->bssid), 0); - memcpy(priv->bssid, conf->bssid, ETH_ALEN); + switch (priv->mode) { + case NL80211_IFTYPE_STATION: + ret = p54_setup_mac(dev, P54_FILTER_TYPE_STATION, conf->bssid); + if (ret) + goto out; + ret = p54_set_leds(dev, 1, + !is_multicast_ether_addr(conf->bssid), 0); + if (ret) + goto out; + memcpy(priv->bssid, conf->bssid, ETH_ALEN); + break; + case NL80211_IFTYPE_AP: + case NL80211_IFTYPE_ADHOC: + memcpy(priv->bssid, conf->bssid, ETH_ALEN); + ret = p54_set_freq(dev, dev->conf.channel->center_freq); + if (ret) + goto out; + ret = p54_setup_mac(dev, priv->mac_mode, priv->bssid); + if (ret) + goto out; + if (conf->changed & IEEE80211_IFCC_BEACON) { + ret = p54_beacon_update(dev, vif); + if (ret) + goto out; + ret = p54_set_edcf(dev); + if (ret) + goto out; + } + } +out: mutex_unlock(&priv->conf_mutex); - return 0; + return ret; } static void p54_configure_filter(struct ieee80211_hw *dev, @@ -1541,6 +1773,7 @@ static const struct ieee80211_ops p54_ops = { .stop = p54_stop, .add_interface = p54_add_interface, .remove_interface = p54_remove_interface, + .set_tim = p54_set_tim, .config = p54_config, .config_interface = p54_config_interface, .bss_info_changed = p54_bss_info_changed, @@ -1566,7 +1799,9 @@ struct ieee80211_hw *p54_init_common(size_t priv_data_len) IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_NOISE_DBM; - dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); + dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION | + NL80211_IFTYPE_ADHOC | + NL80211_IFTYPE_AP); dev->channel_change_time = 1000; /* TODO: find actual value */ priv->tx_stats[0].limit = 1; /* Beacon queue */ -- 2.11.0