gianfar: only check headroom when FCB is needed
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index 44cbf26..6a38800 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -1310,8 +1310,10 @@
base = priv->tx_bd_base;
- /* make space for additional header */
- if (skb_headroom(skb) < GMAC_FCB_LEN) {
+ /* make space for additional header when fcb is needed */
+ if (((skb->ip_summed == CHECKSUM_PARTIAL) ||
+ (priv->vlgrp && vlan_tx_tag_present(skb))) &&
+ (skb_headroom(skb) < GMAC_FCB_LEN)) {
struct sk_buff *skb_new;
skb_new = skb_realloc_headroom(skb, GMAC_FCB_LEN);