1 files changed, 17 insertions, 8 deletions

diff --git a/net/tipc/eth_media.c b/net/tipc/eth_media.c
index 6230d16020c4..81253d0b24b9 100644
--- a/net/tipc/eth_media.c
+++ b/net/tipc/eth_media.c
@@ -72,17 +72,26 @@ static int send_msg(struct sk_buff *buf, struct tipc_bearer *tb_ptr,
 {
         struct sk_buff *clone;
         struct net_device *dev;
+        int delta;
 
         clone = skb_clone(buf, GFP_ATOMIC);
-        if (clone) {
-                skb_reset_network_header(clone);
-                dev = ((struct eth_bearer *)(tb_ptr->usr_handle))->dev;
-                clone->dev = dev;
-                dev_hard_header(clone, dev, ETH_P_TIPC,
-                                 &dest->dev_addr.eth_addr,
-                                 dev->dev_addr, clone->len);
-                dev_queue_xmit(clone);
+        if (!clone)
+                return 0;
+
+        dev = ((struct eth_bearer *)(tb_ptr->usr_handle))->dev;
+        delta = dev->hard_header_len - skb_headroom(buf);
+
+        if ((delta > 0) &&
+            pskb_expand_head(clone, SKB_DATA_ALIGN(delta), 0, GFP_ATOMIC)) {
+                kfree_skb(clone);
+                return 0;
         }
+
+        skb_reset_network_header(clone);
+        clone->dev = dev;
+        dev_hard_header(clone, dev, ETH_P_TIPC, &dest->dev_addr.eth_addr,
+                        dev->dev_addr, clone->len);
+        dev_queue_xmit(clone);
         return 0;
 }