---

yaml
---
r: 57603
b: refs/heads/master
c: ce6eea5
h: refs/heads/master
i:
  57601: b32c421
  57599: 366f590
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4aa9c93e1c7911866c546651a5efbbf62914092e
+refs/heads/master: ce6eea58eb8f50f563663c6e723b4bbbe55b012e

trunk/drivers/net/ibmveth.c

@@ -915,17 +915,36 @@ static int ibmveth_change_mtu(struct net_device *dev, int new_mtu)
 {
 	struct ibmveth_adapter *adapter = dev->priv;
 	int new_mtu_oh = new_mtu + IBMVETH_BUFF_OH;
-	int i;
+	int reinit = 0;
+	int i, rc;
 
 	if (new_mtu < IBMVETH_MAX_MTU)
 		return -EINVAL;
 
+	for (i = 0; i < IbmVethNumBufferPools; i++)
+		if (new_mtu_oh < adapter->rx_buff_pool[i].buff_size)
+			break;
+
+	if (i == IbmVethNumBufferPools)
+		return -EINVAL;
+
 	/* Look for an active buffer pool that can hold the new MTU */
 	for(i = 0; i<IbmVethNumBufferPools; i++) {
-		if (!adapter->rx_buff_pool[i].active)
-			continue;
+		if (!adapter->rx_buff_pool[i].active) {
+			adapter->rx_buff_pool[i].active = 1;
+			reinit = 1;
+		}
+
 		if (new_mtu_oh < adapter->rx_buff_pool[i].buff_size) {
-			dev->mtu = new_mtu;
+			if (reinit && netif_running(adapter->netdev)) {
+				adapter->pool_config = 1;
+				ibmveth_close(adapter->netdev);
+				adapter->pool_config = 0;
+				dev->mtu = new_mtu;
+				if ((rc = ibmveth_open(adapter->netdev)))
+					return rc;
+			} else
+				dev->mtu = new_mtu;
 			return 0;
 		}
 	}