AcoSail/kernel_optimize_test
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gianfar: only check headroom when FCB is needed

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Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Li Yang 2009-03-27 15:54:30 -07:00 committed by David S. Miller
parent 8ebaebca7e
commit 5b28beaf88
1 changed files with 4 additions and 2 deletions
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6
drivers/net/gianfar.c
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@ -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);