From patchwork Fri Feb 12 16:17:27 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dany Madden X-Patchwork-Id: 12085623 X-Patchwork-Delegate: kuba@kernel.org 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 66713C433E0 for ; Fri, 12 Feb 2021 16:18:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2C12464E7A for ; Fri, 12 Feb 2021 16:18:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230182AbhBLQSu (ORCPT ); Fri, 12 Feb 2021 11:18:50 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:30396 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229648AbhBLQSl (ORCPT ); Fri, 12 Feb 2021 11:18:41 -0500 Received: from pps.filterd (m0187473.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 11CG3vkP175149 for ; Fri, 12 Feb 2021 11:17:57 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id; s=pp1; bh=1mquI83Dg8Pf/oCVQrmWvB5E7GNhmi8md9XB1DLGceQ=; b=ngESSyvclYAQYulYxZpwF4Z7calrtRTSrF9WMIlNIa5t4LiEU3gauiaKD4oA3LtL2fFx EEhT2UT0QGtvIG+sIa77DKTJrQsc7KGr4vEMlvU5lsT9s/b93HeZrYA2T9LwL90prF+m Ukbu5o1fIycI8iky6qdjxE3se3YjIEFi5pCtDKlmn3UrhN9Taycx/q5GVyElZ9ibt/LH Ob6Xkty9vipdtm5jc2/7hLOizEiBHWMqqYCdP2GDw/QmoudVAFW5B1YmHdXDSHvxJfUU 5NuEp8JZMcItyruYBP8aoattETAnLRc1wpJVINsoDi6U0VK0IWGHFfZBRdbX9Ww0OLez 5g== Received: from ppma04wdc.us.ibm.com (1a.90.2fa9.ip4.static.sl-reverse.com [169.47.144.26]) by mx0a-001b2d01.pphosted.com with ESMTP id 36nv8a9jwm-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT) for ; Fri, 12 Feb 2021 11:17:57 -0500 Received: from pps.filterd (ppma04wdc.us.ibm.com [127.0.0.1]) by ppma04wdc.us.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 11CG7ajU008317 for ; Fri, 12 Feb 2021 16:17:56 GMT Received: from b03cxnp08026.gho.boulder.ibm.com (b03cxnp08026.gho.boulder.ibm.com [9.17.130.18]) by ppma04wdc.us.ibm.com with ESMTP id 36hjr9x6j6-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT) for ; Fri, 12 Feb 2021 16:17:56 +0000 Received: from b03ledav005.gho.boulder.ibm.com (b03ledav005.gho.boulder.ibm.com [9.17.130.236]) by b03cxnp08026.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 11CGHtpW21627150 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 12 Feb 2021 16:17:55 GMT Received: from b03ledav005.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7B953BE051; Fri, 12 Feb 2021 16:17:55 +0000 (GMT) Received: from b03ledav005.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2102CBE04F; Fri, 12 Feb 2021 16:17:55 +0000 (GMT) Received: from ltcalpine2-lp16.aus.stglabs.ibm.com (unknown [9.40.195.199]) by b03ledav005.gho.boulder.ibm.com (Postfix) with ESMTP; Fri, 12 Feb 2021 16:17:54 +0000 (GMT) From: Dany Madden To: netdev@vger.kernel.org Cc: sukadev@linux.ibm.com, ljp@linux.ibm.com, ricklind@linux.ibm.com, Dany Madden Subject: [PATCH net] ibmvnic: change IBMVNIC_MAX_IND_DESCS to 16 Date: Fri, 12 Feb 2021 11:17:27 -0500 Message-Id: <20210212161727.8557-1-drt@linux.ibm.com> X-Mailer: git-send-email 2.18.2 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369,18.0.737 definitions=2021-02-12_05:2021-02-12,2021-02-12 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 adultscore=0 mlxlogscore=999 mlxscore=0 clxscore=1011 bulkscore=0 priorityscore=1501 phishscore=0 spamscore=0 impostorscore=0 suspectscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2102120122 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org The supported indirect subcrq entries on Power8 is 16. Power9 supports 128. Redefined this value to 16 to minimize the driver from having to reset when migrating between Power9 and Power8. In our rx/tx performance testing, we found no performance difference between 16 and 128 at this time. Fixes: f019fb6392e5 ("ibmvnic: Introduce indirect subordinate Command Response Queue buffers") Signed-off-by: Dany Madden --- drivers/net/ethernet/ibm/ibmvnic.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/ibm/ibmvnic.h b/drivers/net/ethernet/ibm/ibmvnic.h index c09c3f6bba9f..07ced1016aa4 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.h +++ b/drivers/net/ethernet/ibm/ibmvnic.h @@ -31,7 +31,7 @@ #define IBMVNIC_BUFFS_PER_POOL 100 #define IBMVNIC_MAX_QUEUES 16 #define IBMVNIC_MAX_QUEUE_SZ 4096 -#define IBMVNIC_MAX_IND_DESCS 128 +#define IBMVNIC_MAX_IND_DESCS 16 #define IBMVNIC_IND_ARR_SZ (IBMVNIC_MAX_IND_DESCS * 32) #define IBMVNIC_TSO_BUF_SZ 65536