caif: Fix memory leakage in the chnl_net.c.

Added kfree_skb() calls in the chnk_net.c file on
the error paths.

Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/caif/chnl_net.c b/net/caif/chnl_net.c
index 20618dd3088b79e0f1528436c7b1c9359f9c9cd6..d09340e1523f64d0aa1f7ba71cf0d0626c22036a 100644 (file)
--- a/net/caif/chnl_net.c
+++ b/net/caif/chnl_net.c
@@ -103,6 +103,7 @@ static int chnl_recv_cb(struct cflayer *layr, struct cfpkt *pkt)
                skb->protocol = htons(ETH_P_IPV6);
                break;
        default:
+               kfree_skb(skb);
                priv->netdev->stats.rx_errors++;
                return -EINVAL;
        }
@@ -220,14 +221,16 @@ static int chnl_net_start_xmit(struct sk_buff *skb, struct net_device *dev)
 
        if (skb->len > priv->netdev->mtu) {
                pr_warn("Size of skb exceeded MTU\n");
+               kfree_skb(skb);
                dev->stats.tx_errors++;
-               return -ENOSPC;
+               return NETDEV_TX_OK;
        }
 
        if (!priv->flowenabled) {
                pr_debug("dropping packets flow off\n");
+               kfree_skb(skb);
                dev->stats.tx_dropped++;
-               return NETDEV_TX_BUSY;
+               return NETDEV_TX_OK;
        }
 
        if (priv->conn_req.protocol == CAIFPROTO_DATAGRAM_LOOP)
@@ -242,7 +245,7 @@ static int chnl_net_start_xmit(struct sk_buff *skb, struct net_device *dev)
        result = priv->chnl.dn->transmit(priv->chnl.dn, pkt);
        if (result) {
                dev->stats.tx_dropped++;
-               return result;
+               return NETDEV_TX_OK;
        }
 
        /* Update statistics. */