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authorUrsula Braun <ubraun@linux.vnet.ibm.com>2015-12-11 12:27:56 +0100
committerDavid S. Miller <davem@davemloft.net>2015-12-14 16:16:45 -0500
commit577777359e1f47d0cb7dfc23aac0da867a14af00 (patch)
tree10a408827ce0e5509fd20d7f4062d2a6b092a483 /drivers/s390/net
parente5ebe63214d44d4dcf43df02edf3613e04d671b9 (diff)
downloadop-kernel-dev-577777359e1f47d0cb7dfc23aac0da867a14af00.zip
op-kernel-dev-577777359e1f47d0cb7dfc23aac0da867a14af00.tar.gz
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 <ubraun@linux.vnet.ibm.com> Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/s390/net')
-rw-r--r--drivers/s390/net/qeth_l3_main.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index 10d9d3e..7c8c68c 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);
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