Thank you for the comments. Incorporated feedback into current version.
-Thanks,
Ranjit
--- linux-2.6/net/sched/sch_generic.c 2006-05-10 12:34:52.000000000 -0700
+++ linux/net/sched/sch_generic.c 2006-05-14 08:53:33.000000000 -0700
@@ -136,8 +136,12 @@
if (!netif_queue_stopped(dev)) {
int ret;
+ struct sk_buff *skbc = NULL;
+ /* Clone the skb so that we hold a reference
+ * to its data and we can trace it after a
+ * successful transmit. */
if (netdev_nit)
- dev_queue_xmit_nit(skb, dev);
+ skbc = skb_clone(skb, GFP_ATOMIC);
ret = dev->hard_start_xmit(skb, dev);
if (ret == NETDEV_TX_OK) {
@@ -145,9 +149,17 @@
dev->xmit_lock_owner = -1;
spin_unlock(&dev->xmit_lock);
}
+ if (skbc) {
+ /* transmit succeeded,
+ * trace the clone. */
+ dev_queue_xmit_nit(skbc,dev);
+ kfree_skb(skbc);
+ }
spin_lock(&dev->queue_lock);
return -1;
}
+ /* Free clone if it exists */
+ kfree_skb(skbc);
if (ret == NETDEV_TX_LOCKED && nolock) {
spin_lock(&dev->queue_lock);
goto collision;
-
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