[PATCH] ieee80211: Log if netif_rx() drops the packet

Log to wireless network stats if netif_rx() drops the packet.

(also trailing whitespace and Lindent cleanups as part of patch-apply
process)

Signed-off-by: James Ketrenos <jketreno@linux.intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/ieee80211/ieee80211_crypt.c

@@ -18,7 +18,6 @@
 #include <linux/string.h>
 #include <net/ieee80211.h>
 
-
 MODULE_AUTHOR("Jouni Malinen");
 MODULE_DESCRIPTION("HostAP crypto");
 MODULE_LICENSE("GPL");
@@ -33,11 +32,11 @@ static DEFINE_SPINLOCK(ieee80211_crypto_lock);
 
 void ieee80211_crypt_deinit_entries(struct ieee80211_device *ieee, int force)
 {
- 	struct ieee80211_crypt_data *entry, *next;
+	struct ieee80211_crypt_data *entry, *next;
 	unsigned long flags;
 
 	spin_lock_irqsave(&ieee->lock, flags);
- 	list_for_each_entry_safe(entry, next, &ieee->crypt_deinit_list, list) {
+	list_for_each_entry_safe(entry, next, &ieee->crypt_deinit_list, list) {
 		if (atomic_read(&entry->refcnt) != 0 && !force)
 			continue;
 
@@ -141,9 +140,9 @@ int ieee80211_unregister_crypto_ops(struct ieee80211_crypto_ops *ops)
 	spin_unlock_irqrestore(&ieee80211_crypto_lock, flags);
 	return -EINVAL;
 
- found:
+      found:
 	printk(KERN_DEBUG "ieee80211_crypt: unregistered algorithm "
-			  "'%s'\n", ops->name);
+	       "'%s'\n", ops->name);
 	list_del(&alg->list);
 	spin_unlock_irqrestore(&ieee80211_crypto_lock, flags);
 	kfree(alg);
@@ -163,7 +162,7 @@ struct ieee80211_crypto_ops *ieee80211_get_crypto_ops(const char *name)
 	spin_unlock_irqrestore(&ieee80211_crypto_lock, flags);
 	return NULL;
 
- found:
+      found:
 	spin_unlock_irqrestore(&ieee80211_crypto_lock, flags);
 	return alg->ops;
 }

net/ieee80211/ieee80211_rx.c

@@ -754,7 +754,14 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
 		memset(skb->cb, 0, sizeof(skb->cb));
 		skb->dev = dev;
 		skb->ip_summed = CHECKSUM_NONE;	/* 802.11 crc not sufficient */
-		netif_rx(skb);
+		if (netif_rx(skb) == NET_RX_DROP) {
+			/* netif_rx always succeeds, but it might drop
+			 * the packet.  If it drops the packet, we log that
+			 * in our stats. */
+			IEEE80211_DEBUG_DROP
+			    ("RX: netif_rx dropped the packet\n");
+			stats->rx_dropped++;
+		}
 	}
 
       rx_exit: