From: Ursula Braun Date: Fri, 11 Dec 2015 11:27:56 +0000 (+0100) Subject: qeth: repair SBAL elements calculation X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=577777359e1f47d0cb7dfc23aac0da867a14af00;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git qeth: repair SBAL elements calculation When sending skbs, qeth determines the number of qdio SBAL elements required. If qeth sends a fragmented skb, the SBAL element number calculation is wrong, because the fragmented data part is added twice in qeth_l3_tso_elements(). This patch makes sure fragmented data is handled in qeth_elements_for_frags() only, while qeth_l3_tso_elements() starts calculation of qdio SBAL elements just with the linear data part of the skb. Signed-off-by: Ursula Braun Reviewed-by: Thomas Richter Signed-off-by: David S. Miller --- diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c index 10d9d3eefd20..7c8c68c26540 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -2797,7 +2797,7 @@ static inline int qeth_l3_tso_elements(struct sk_buff *skb) { unsigned long tcpd = (unsigned long)tcp_hdr(skb) + tcp_hdr(skb)->doff * 4; - int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data); + int tcpd_len = skb_headlen(skb) - (tcpd - (unsigned long)skb->data); int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd); elements += qeth_get_elements_for_frags(skb);