From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 694B1C47254 for ; Tue, 5 May 2020 16:26:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5075D206B9 for ; Tue, 5 May 2020 16:26:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730620AbgEEQ0J (ORCPT ); Tue, 5 May 2020 12:26:09 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:14482 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728687AbgEEQ0I (ORCPT ); Tue, 5 May 2020 12:26:08 -0400 Received: from pps.filterd (m0098409.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 045G3M2G056915; Tue, 5 May 2020 12:26:07 -0400 Received: from ppma05fra.de.ibm.com (6c.4a.5195.ip4.static.sl-reverse.com [149.81.74.108]) by mx0a-001b2d01.pphosted.com with ESMTP id 30u8snf055-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 05 May 2020 12:26:07 -0400 Received: from pps.filterd (ppma05fra.de.ibm.com [127.0.0.1]) by ppma05fra.de.ibm.com (8.16.0.27/8.16.0.27) with SMTP id 045GJshD002645; Tue, 5 May 2020 16:26:04 GMT Received: from b06cxnps3075.portsmouth.uk.ibm.com (d06relay10.portsmouth.uk.ibm.com [9.149.109.195]) by ppma05fra.de.ibm.com with ESMTP id 30s0g5jy94-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 05 May 2020 16:26:04 +0000 Received: from d06av24.portsmouth.uk.ibm.com (d06av24.portsmouth.uk.ibm.com [9.149.105.60]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 045GQ2EE57278542 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 5 May 2020 16:26:02 GMT Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 02FC742041; Tue, 5 May 2020 16:26:02 +0000 (GMT) Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B7D934203F; Tue, 5 May 2020 16:26:01 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by d06av24.portsmouth.uk.ibm.com (Postfix) with ESMTP; Tue, 5 May 2020 16:26:01 +0000 (GMT) From: Julian Wiedmann To: David Miller Cc: netdev , linux-s390 , Heiko Carstens , Ursula Braun , Julian Wiedmann Subject: [PATCH net-next 01/11] s390/qeth: keep track of LP2LP capability for csum offload Date: Tue, 5 May 2020 18:25:49 +0200 Message-Id: <20200505162559.14138-2-jwi@linux.ibm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200505162559.14138-1-jwi@linux.ibm.com> References: <20200505162559.14138-1-jwi@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.676 definitions=2020-05-05_09:2020-05-04,2020-05-05 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1011 bulkscore=0 impostorscore=0 priorityscore=1501 phishscore=0 mlxscore=0 malwarescore=0 suspectscore=0 lowpriorityscore=0 adultscore=0 spamscore=0 mlxlogscore=767 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2005050126 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org When enabling TX CSO, make a note of whether the device has support for LP2LP offloading. This will become relevant in subsequent patches. Signed-off-by: Julian Wiedmann --- drivers/s390/net/qeth_core.h | 3 +++ drivers/s390/net/qeth_core_main.c | 23 ++++++++++++++--------- 2 files changed, 17 insertions(+), 9 deletions(-) diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h index e0b26310ecab..2ac7771394d8 100644 --- a/drivers/s390/net/qeth_core.h +++ b/drivers/s390/net/qeth_core.h @@ -688,6 +688,9 @@ struct qeth_card_info { u8 promisc_mode:1; u8 use_v1_blkt:1; u8 is_vm_nic:1; + /* no bitfield, we take a pointer on these two: */ + u8 has_lp2lp_cso_v6; + u8 has_lp2lp_cso_v4; enum qeth_card_types type; enum qeth_link_types link_type; int broadcast_capable; diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index f7689461c242..ef96890eea5c 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -6300,7 +6300,7 @@ static int qeth_set_csum_off(struct qeth_card *card, enum qeth_ipa_funcs cstype, } static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype, - enum qeth_prot_versions prot) + enum qeth_prot_versions prot, u8 *lp2lp) { u32 required_features = QETH_IPA_CHECKSUM_UDP | QETH_IPA_CHECKSUM_TCP; struct qeth_cmd_buffer *iob; @@ -6352,8 +6352,11 @@ static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype, dev_info(&card->gdev->dev, "HW Checksumming (%sbound IPv%d) enabled\n", cstype == IPA_INBOUND_CHECKSUM ? "in" : "out", prot); - if (!qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP) && - cstype == IPA_OUTBOUND_CHECKSUM) + + if (lp2lp) + *lp2lp = qeth_ipa_caps_enabled(&caps, QETH_IPA_CHECKSUM_LP2LP); + + if (lp2lp && !*lp2lp) dev_warn(&card->gdev->dev, "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n", QETH_CARD_IFNAME(card)); @@ -6361,9 +6364,9 @@ static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype, } static int qeth_set_ipa_csum(struct qeth_card *card, bool on, int cstype, - enum qeth_prot_versions prot) + enum qeth_prot_versions prot, u8 *lp2lp) { - return on ? qeth_set_csum_on(card, cstype, prot) : + return on ? qeth_set_csum_on(card, cstype, prot, lp2lp) : qeth_set_csum_off(card, cstype, prot); } @@ -6451,13 +6454,13 @@ static int qeth_set_ipa_rx_csum(struct qeth_card *card, bool on) if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) rc_ipv4 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM, - QETH_PROT_IPV4); + QETH_PROT_IPV4, NULL); if (!qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) /* no/one Offload Assist available, so the rc is trivial */ return rc_ipv4; rc_ipv6 = qeth_set_ipa_csum(card, on, IPA_INBOUND_CHECKSUM, - QETH_PROT_IPV6); + QETH_PROT_IPV6, NULL); if (on) /* enable: success if any Assist is active */ @@ -6504,13 +6507,15 @@ int qeth_set_features(struct net_device *dev, netdev_features_t features) if ((changed & NETIF_F_IP_CSUM)) { rc = qeth_set_ipa_csum(card, features & NETIF_F_IP_CSUM, - IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4); + IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV4, + &card->info.has_lp2lp_cso_v4); if (rc) changed ^= NETIF_F_IP_CSUM; } if (changed & NETIF_F_IPV6_CSUM) { rc = qeth_set_ipa_csum(card, features & NETIF_F_IPV6_CSUM, - IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6); + IPA_OUTBOUND_CHECKSUM, QETH_PROT_IPV6, + &card->info.has_lp2lp_cso_v6); if (rc) changed ^= NETIF_F_IPV6_CSUM; } -- 2.17.1