From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julian Wiedmann Subject: [PATCH net-next 07/10] s390/qeth: increase GSO max size for eligible L3 devices Date: Wed, 11 Jul 2018 17:42:44 +0200 Message-ID: <20180711154247.5523-8-jwi@linux.ibm.com> References: <20180711154247.5523-1-jwi@linux.ibm.com> Cc: , , Martin Schwidefsky , Heiko Carstens , Stefan Raspl , Ursula Braun , Julian Wiedmann To: David Miller Return-path: Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:59636 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2389305AbeGKPsQ (ORCPT ); Wed, 11 Jul 2018 11:48:16 -0400 Received: from pps.filterd (m0098414.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w6BFdQRC112170 for ; Wed, 11 Jul 2018 11:43:20 -0400 Received: from e06smtp04.uk.ibm.com (e06smtp04.uk.ibm.com [195.75.94.100]) by mx0b-001b2d01.pphosted.com with ESMTP id 2k5jkb6bbg-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Wed, 11 Jul 2018 11:43:19 -0400 Received: from localhost by e06smtp04.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 11 Jul 2018 16:43:18 +0100 In-Reply-To: <20180711154247.5523-1-jwi@linux.ibm.com> Sender: netdev-owner@vger.kernel.org List-ID: When a L3 device doesn't offer TSO, allow the stack to build full-size GSO skbs. Signed-off-by: Julian Wiedmann --- drivers/s390/net/qeth_l3_main.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c index 7b4de46bf6e3..d07803df460b 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -2536,8 +2536,9 @@ static int qeth_l3_setup_netdev(struct qeth_card *card) NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER; netif_keep_dst(card->dev); - netif_set_gso_max_size(card->dev, (QETH_MAX_BUFFER_ELEMENTS(card) - 1) * - PAGE_SIZE); + if (card->dev->hw_features & NETIF_F_TSO) + netif_set_gso_max_size(card->dev, + PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1)); SET_NETDEV_DEV(card->dev, &card->gdev->dev); netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); -- 2.16.4