From b403e685b7c57f7912bae36987433e72c616f418 Mon Sep 17 00:00:00 2001 From: Frank Blaschka Date: Tue, 1 Apr 2008 10:26:59 +0200 Subject: [PATCH] qeth: core code should alloc headroom for LLC protocol Allocate headroom for TR_HLEN but using only ETH_HLEN causes rx performance degradation. Allocate ETH_HLEN for ethernet and TR_HLEN for token ring (layer 3 mode). Signed-off-by: Frank Blaschka Signed-off-by: Jeff Garzik --- drivers/s390/net/qeth_core_main.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 5cfe0ef7719a..055f5c3e7b56 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -4002,7 +4002,11 @@ struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card, } } else { skb_len = (*hdr)->hdr.l3.length; - headroom = max((int)ETH_HLEN, (int)TR_HLEN); + if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) || + (card->info.link_type == QETH_LINK_TYPE_HSTR)) + headroom = TR_HLEN; + else + headroom = ETH_HLEN; } if (!skb_len) -- 2.30.2