1 files changed, 40 insertions, 0 deletions

diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c
index ec10e05c6666..15fb2c4a36a7 100644
--- a/net/ipv4/inet_fragment.c
+++ b/net/ipv4/inet_fragment.c
@@ -17,6 +17,8 @@
 #include <linux/timer.h>
 #include <linux/mm.h>
 #include <linux/random.h>
+#include <linux/skbuff.h>
+#include <linux/rtnetlink.h>
 
 #include <net/inet_frag.h>
 
@@ -100,3 +102,41 @@ void inet_frag_kill(struct inet_frag_queue *fq, struct inet_frags *f)
 }
 
 EXPORT_SYMBOL(inet_frag_kill);
+
+static inline void frag_kfree_skb(struct inet_frags *f, struct sk_buff *skb,
+                                                int *work)
+{
+        if (work)
+                *work -= skb->truesize;
+
+        atomic_sub(skb->truesize, &f->mem);
+        if (f->skb_free)
+                f->skb_free(skb);
+        kfree_skb(skb);
+}
+
+void inet_frag_destroy(struct inet_frag_queue *q, struct inet_frags *f,
+                                        int *work)
+{
+        struct sk_buff *fp;
+
+        BUG_TRAP(q->last_in & COMPLETE);
+        BUG_TRAP(del_timer(&q->timer) == 0);
+
+        /* Release all fragment data. */
+        fp = q->fragments;
+        while (fp) {
+                struct sk_buff *xp = fp->next;
+
+                frag_kfree_skb(f, fp, work);
+                fp = xp;
+        }
+
+        if (work)
+                *work -= f->qsize;
+        atomic_sub(f->qsize, &f->mem);
+
+        f->destructor(q);
+
+}
+EXPORT_SYMBOL(inet_frag_destroy);