commit c40a27f48ceee648e9cfdda040b69e7010d9f82c
author David S. Miller <davem@sunset.davemloft.net> Thu Nov 30 21:05:23 2006 -0800
committer David S. Miller <davem@sunset.davemloft.net> Sat Dec 02 21:32:08 2006 -0800
tree dde14f99417f4ce5d2ac367aa09f5f4fca18a5b2
parent 1e9b3d5339d2afd6348e8211f0db695b00261e17

[ATM]: Kill ipcommon.[ch]

All that remained was skb_migrate() and that was overkill
for what the two call sites were trying to do.

Signed-off-by: David S. Miller <davem@davemloft.net>

net/atm/br2684.c

diff --git a/net/atm/br2684.c b/net/atm/br2684.c
index b04162f..83a1c1b 100644
--- a/net/atm/br2684.c
+++ b/net/atm/br2684.c
@@ -23,7 +23,6 @@
 #include <linux/atmbr2684.h>
 
 #include "common.h"
-#include "ipcommon.h"
 
 /*
  * Define this to use a version of the code which interacts with the higher
@@ -500,11 +499,12 @@
 */
 	int err;
 	struct br2684_vcc *brvcc;
-	struct sk_buff_head copy;
 	struct sk_buff *skb;
+	struct sk_buff_head *rq;
 	struct br2684_dev *brdev;
 	struct net_device *net_dev;
 	struct atm_backend_br2684 be;
+	unsigned long flags;
 
 	if (copy_from_user(&be, arg, sizeof be))
 		return -EFAULT;
@@ -554,12 +554,30 @@
 	brvcc->old_push = atmvcc->push;
 	barrier();
 	atmvcc->push = br2684_push;
-	skb_queue_head_init(&copy);
-	skb_migrate(&sk_atm(atmvcc)->sk_receive_queue, &copy);
-	while ((skb = skb_dequeue(&copy)) != NULL) {
+
+	rq = &sk_atm(atmvcc)->sk_receive_queue;
+
+	spin_lock_irqsave(&rq->lock, flags);
+	if (skb_queue_empty(rq)) {
+		skb = NULL;
+	} else {
+		/* NULL terminate the list.  */
+		rq->prev->next = NULL;
+		skb = rq->next;
+	}
+	rq->prev = rq->next = (struct sk_buff *)rq;
+	rq->qlen = 0;
+	spin_unlock_irqrestore(&rq->lock, flags);
+
+	while (skb) {
+		struct sk_buff *next = skb->next;
+
+		skb->next = skb->prev = NULL;
 		BRPRIV(skb->dev)->stats.rx_bytes -= skb->len;
 		BRPRIV(skb->dev)->stats.rx_packets--;
 		br2684_push(atmvcc, skb);
+
+		skb = next;
 	}
 	__module_get(THIS_MODULE);
 	return 0;