From f231dc9dbd789b0f98a15941e3cebedb4ad72ad5 Mon Sep 17 00:00:00 2001 From: Julian Wiedmann Date: Mon, 17 Sep 2018 17:35:59 +0200 Subject: s390/qeth: limit csum offload erratum to L3 devices Combined L3+L4 csum offload is only required for some L3 HW. So for L2 devices, don't offload the IP header csum calculation. Signed-off-by: Julian Wiedmann Reference-ID: JUP 394553 Signed-off-by: David S. Miller --- drivers/s390/net/qeth_core.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'drivers/s390/net/qeth_core.h') diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h index 0857b1286660..b47fb95a49e9 100644 --- a/drivers/s390/net/qeth_core.h +++ b/drivers/s390/net/qeth_core.h @@ -892,11 +892,6 @@ static inline void qeth_tx_csum(struct sk_buff *skb, u8 *flags, int ipv) if ((ipv == 4 && ip_hdr(skb)->protocol == IPPROTO_UDP) || (ipv == 6 && ipv6_hdr(skb)->nexthdr == IPPROTO_UDP)) *flags |= QETH_HDR_EXT_UDP; - if (ipv == 4) { - /* some HW requires combined L3+L4 csum offload: */ - *flags |= QETH_HDR_EXT_CSUM_HDR_REQ; - ip_hdr(skb)->check = 0; - } } static inline void qeth_put_buffer_pool_entry(struct qeth_card *card, -- cgit v1.2.3-59-g8ed1b