tree 12bc14f038ed644faa6299912453f2784f755315
parent 2f761478a2b436efa23659b4d5c826e53b11f91a
author Chuck Ebbert <[EMAIL PROTECTED]> Sun, 03 Jul 2005 05:28:21 -0400
committer Jeff Garzik <[EMAIL PROTECTED]> Sun, 31 Jul 2005 09:06:10 -0400
[PATCH] loopback: #ifdef the TSO code
This patch #ifdefs the TSO code in the loopback driver.
Saves ~800 bytes of text on i386 and avoids a conditional in the fast path.
Signed-off-by: Chuck Ebbert <[EMAIL PROTECTED]>
Signed-off-by: Jeff Garzik <[EMAIL PROTECTED]>
drivers/net/loopback.c | 8 +++++++-
1 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/net/loopback.c b/drivers/net/loopback.c
--- a/drivers/net/loopback.c
+++ b/drivers/net/loopback.c
@@ -68,6 +68,7 @@ static DEFINE_PER_CPU(struct net_device_
* of largesending device modulo TCP checksum, which is ignored for loopback.
*/
+#ifdef LOOPBACK_TSO
static void emulate_large_send_offload(struct sk_buff *skb)
{
struct iphdr *iph = skb->nh.iph;
@@ -119,6 +120,7 @@ static void emulate_large_send_offload(s
dev_kfree_skb(skb);
}
+#endif /* LOOPBACK_TSO */
/*
* The higher levels take care of making this non-reentrant (it's
@@ -136,6 +138,7 @@ static int loopback_xmit(struct sk_buff
skb->ip_summed = CHECKSUM_UNNECESSARY;
#endif
+#ifdef LOOPBACK_TSO
if (skb_shinfo(skb)->tso_size) {
BUG_ON(skb->protocol != htons(ETH_P_IP));
BUG_ON(skb->nh.iph->protocol != IPPROTO_TCP);
@@ -143,7 +146,7 @@ static int loopback_xmit(struct sk_buff
emulate_large_send_offload(skb);
return 0;
}
-
+#endif
dev->last_rx = jiffies;
lb_stats = &per_cpu(loopback_stats, get_cpu());
@@ -209,6 +212,9 @@ struct net_device loopback_dev = {
.rebuild_header = eth_rebuild_header,
.flags = IFF_LOOPBACK,
.features = NETIF_F_SG|NETIF_F_FRAGLIST
+#ifdef LOOPBACK_TSO
+ |NETIF_F_TSO
+#endif
|NETIF_F_NO_CSUM|NETIF_F_HIGHDMA
|NETIF_F_LLTX,
.ethtool_ops = &loopback_ethtool_ops,
-
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