qeth: l3 hw tx csum circumvent hw bug

Some OSA level have a bug in the hw tx csum logic. We can circumvent
this bug by turning on IP hw csum also.

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index 988255b443e4..d09b0c44fc3d 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -2998,7 +2998,9 @@ static inline void qeth_l3_hdr_csum(struct qeth_card *card,
          */
         if (iph->protocol == IPPROTO_UDP)
                 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
-        hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ;
+        hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
+                QETH_HDR_EXT_CSUM_HDR_REQ;
+        iph->check = 0;
         if (card->options.performance_stats)
                 card->perf_stats.tx_csum++;
 }