diff options
| -rw-r--r-- | drivers/net/wireless/p54/p54common.c | 46 |
1 files changed, 19 insertions, 27 deletions
diff --git a/drivers/net/wireless/p54/p54common.c b/drivers/net/wireless/p54/p54common.c index 48d81d98e12d..b618bd14583f 100644 --- a/drivers/net/wireless/p54/p54common.c +++ b/drivers/net/wireless/p54/p54common.c @@ -823,30 +823,30 @@ void p54_free_skb(struct ieee80211_hw *dev, struct sk_buff *skb) struct p54_tx_info *range; unsigned long flags; - if (unlikely(!skb || !dev || !skb_queue_len(&priv->tx_queue))) + if (unlikely(!skb || !dev || skb_queue_empty(&priv->tx_queue))) return; - /* - * don't try to free an already unlinked skb + /* There used to be a check here to see if the SKB was on the + * TX queue or not. This can never happen because all SKBs we + * see here successfully went through p54_assign_address() + * which means the SKB is on the ->tx_queue. */ - if (unlikely((!skb->next) || (!skb->prev))) - return; spin_lock_irqsave(&priv->tx_queue.lock, flags); info = IEEE80211_SKB_CB(skb); range = (void *)info->rate_driver_data; - if (skb->prev != (struct sk_buff *)&priv->tx_queue) { + if (!skb_queue_is_first(&priv->tx_queue, skb)) { struct ieee80211_tx_info *ni; struct p54_tx_info *mr; - ni = IEEE80211_SKB_CB(skb->prev); + ni = IEEE80211_SKB_CB(skb_queue_prev(&priv->tx_queue, skb)); mr = (struct p54_tx_info *)ni->rate_driver_data; } - if (skb->next != (struct sk_buff *)&priv->tx_queue) { + if (!skb_queue_is_last(&priv->tx_queue, skb)) { struct ieee80211_tx_info *ni; struct p54_tx_info *mr; - ni = IEEE80211_SKB_CB(skb->next); + ni = IEEE80211_SKB_CB(skb_queue_next(&priv->tx_queue, skb)); mr = (struct p54_tx_info *)ni->rate_driver_data; } __skb_unlink(skb, &priv->tx_queue); @@ -864,15 +864,13 @@ static struct sk_buff *p54_find_tx_entry(struct ieee80211_hw *dev, unsigned long flags; spin_lock_irqsave(&priv->tx_queue.lock, flags); - entry = priv->tx_queue.next; - while (entry != (struct sk_buff *)&priv->tx_queue) { + skb_queue_walk(&priv->tx_queue, entry) { struct p54_hdr *hdr = (struct p54_hdr *) entry->data; if (hdr->req_id == req_id) { spin_unlock_irqrestore(&priv->tx_queue.lock, flags); return entry; } - entry = entry->next; } spin_unlock_irqrestore(&priv->tx_queue.lock, flags); return NULL; @@ -890,24 +888,22 @@ static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb) int count, idx; spin_lock_irqsave(&priv->tx_queue.lock, flags); - entry = (struct sk_buff *) priv->tx_queue.next; - while (entry != (struct sk_buff *)&priv->tx_queue) { + skb_queue_walk(&priv->tx_queue, entry) { struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry); struct p54_hdr *entry_hdr; struct p54_tx_data *entry_data; unsigned int pad = 0, frame_len; range = (void *)info->rate_driver_data; - if (range->start_addr != addr) { - entry = entry->next; + if (range->start_addr != addr) continue; - } - if (entry->next != (struct sk_buff *)&priv->tx_queue) { + if (!skb_queue_is_last(&priv->tx_queue, entry)) { struct ieee80211_tx_info *ni; struct p54_tx_info *mr; - ni = IEEE80211_SKB_CB(entry->next); + ni = IEEE80211_SKB_CB(skb_queue_next(&priv->tx_queue, + entry)); mr = (struct p54_tx_info *)ni->rate_driver_data; } @@ -1168,23 +1164,21 @@ static int p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb, } } - entry = priv->tx_queue.next; - while (left--) { + skb_queue_walk(&priv->tx_queue, entry) { u32 hole_size; info = IEEE80211_SKB_CB(entry); range = (void *)info->rate_driver_data; hole_size = range->start_addr - last_addr; if (!target_skb && hole_size >= len) { - target_skb = entry->prev; + target_skb = skb_queue_prev(&priv->tx_queue, entry); hole_size -= len; target_addr = last_addr; } largest_hole = max(largest_hole, hole_size); last_addr = range->end_addr; - entry = entry->next; } if (!target_skb && priv->rx_end - last_addr >= len) { - target_skb = priv->tx_queue.prev; + target_skb = skb_peek_tail(&priv->tx_queue); largest_hole = max(largest_hole, priv->rx_end - last_addr - len); if (!skb_queue_empty(&priv->tx_queue)) { info = IEEE80211_SKB_CB(target_skb); @@ -2090,7 +2084,6 @@ out: static void p54_stop(struct ieee80211_hw *dev) { struct p54_common *priv = dev->priv; - struct sk_buff *skb; mutex_lock(&priv->conf_mutex); priv->mode = NL80211_IFTYPE_UNSPECIFIED; @@ -2105,8 +2098,7 @@ static void p54_stop(struct ieee80211_hw *dev) p54_tx_cancel(dev, priv->cached_beacon); priv->stop(dev); - while ((skb = skb_dequeue(&priv->tx_queue))) - kfree_skb(skb); + skb_queue_purge(&priv->tx_queue); priv->cached_beacon = NULL; priv->tsf_high32 = priv->tsf_low32 = 0; mutex_unlock(&priv->conf_mutex); |