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Commit 12883725 authored by Ursula Braun's avatar Ursula Braun Committed by Jeff Garzik
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qeth: CCL-sequence numbers required for protocol ETH_P_802_2 only 



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: default avatarUrsula Braun <braunu@de.ibm.com>
Signed-off-by: default avatarFrank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent 922dc062

drivers/s390/net/qeth_l2_main.c

+2 −1
Original line number Diff line number Diff line
@@ -451,6 +451,7 @@ static void qeth_l2_process_inbound_buffer(struct qeth_card *card, 
				skb->ip_summed = CHECKSUM_UNNECESSARY;

			else

				skb->ip_summed = CHECKSUM_NONE;

			if (skb->protocol == htons(ETH_P_802_2))

				*((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;

			len = skb->len;

			netif_rx(skb);