From: Ursula Braun <braunu@xxxxxxxxxx>
Symptom: slow CCL response time
Problem: non-ETH_P_802_2 packets are not delivered to NDH for
CCL. But CCL detects missing sequence numbers, which
cause a serious performance problem with CCL.
Solution: assign sequence numbers only to 802.2 packets.
Signed-off-by: Ursula Braun <braunu@xxxxxxxxxx>
Signed-off-by: Frank Blaschka <frank.blaschka@xxxxxxxxxx>
---
drivers/s390/net/qeth_l2_main.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
Index: git_davem-2.6.26/drivers/s390/net/qeth_l2_main.c
===================================================================
--- git_davem-2.6.26.orig/drivers/s390/net/qeth_l2_main.c 2008-03-26 09:21:08.000000000 +0100
+++ git_davem-2.6.26/drivers/s390/net/qeth_l2_main.c 2008-03-31 11:19:36.000000000 +0200
@@ -451,7 +451,8 @@
skb->ip_summed = CHECKSUM_UNNECESSARY;
else
skb->ip_summed = CHECKSUM_NONE;
- *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
+ if (skb->protocol == htons(ETH_P_802_2))
+ *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
len = skb->len;
netif_rx(skb);
break;
--
--
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