+ switch (skb->fclone) {
+ case SKB_FCLONE_UNAVAILABLE:
+ kmem_cache_free(skbuff_head_cache, skb);
+ break;
+
+ case SKB_FCLONE_ORIG:
+ fclone_ref = (atomic_t *) (skb + 2);
+ if (atomic_dec_and_test(fclone_ref))
+ kmem_cache_free(skbuff_fclone_cache, skb);
+ break;
+
+ case SKB_FCLONE_CLONE:
+ fclone_ref = (atomic_t *) (skb + 1);
+ other = skb - 1;
+
+ /* The clone portion is available for
+ * fast-cloning again.
+ */
+ skb->fclone = SKB_FCLONE_UNAVAILABLE;
+
+ if (atomic_dec_and_test(fclone_ref))
+ kmem_cache_free(skbuff_fclone_cache, other);
+ break;
+ };