From 5b28beaf88436fa44fc25ee27a2fadffb75f222e Mon Sep 17 00:00:00 2001 From: Li Yang Date: Fri, 27 Mar 2009 15:54:30 -0700 Subject: [PATCH] gianfar: only check headroom when FCB is needed Signed-off-by: Li Yang Signed-off-by: David S. Miller --- drivers/net/gianfar.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c index 44cbf2622b46..6a38800be3f1 100644 --- a/drivers/net/gianfar.c +++ b/drivers/net/gianfar.c @@ -1310,8 +1310,10 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev) 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);