From: frank.blaschka@de.ibm.com
To: davem@davemloft.net
Cc: netdev@vger.kernel.org, linux-s390@vger.kernel.org
Subject: [patch 2/2] [PATCH] qeth: l3 hw tx csum circumvent hw bug
Date: Thu, 13 Jan 2011 07:42:25 +0100 [thread overview]
Message-ID: <20110113064310.729751199@de.ibm.com> (raw)
In-Reply-To: 20110113064223.429450048@de.ibm.com
[-- Attachment #1: 602-qeth-l3-tx-csum.diff --]
[-- Type: text/plain, Size: 781 bytes --]
From: Frank Blaschka <frank.blaschka@de.ibm.com>
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>
---
drivers/s390/net/qeth_l3_main.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- 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(stru
*/
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++;
}
next prev parent reply other threads:[~2011-01-13 6:43 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-13 6:42 [patch 0/2] s390: qeth bug fixes for 2.6.38 next rc frank.blaschka
2011-01-13 6:42 ` [patch 1/2] [PATCH] qeth: postpone open till recovery is finished frank.blaschka
2011-01-13 6:42 ` frank.blaschka [this message]
2011-01-13 7:47 ` [patch 2/2] [PATCH] qeth: l3 hw tx csum circumvent hw bug David Miller
2011-01-13 8:23 ` Frank Blaschka
2011-01-16 4:46 ` David Miller
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