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=-12.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 A153CC433E4 for ; Wed, 22 Jul 2020 22:12:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7BDE720825 for ; Wed, 22 Jul 2020 22:12:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=marvell.com header.i=@marvell.com header.b="Fi1UECe3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387459AbgGVWMj (ORCPT ); Wed, 22 Jul 2020 18:12:39 -0400 Received: from mx0a-0016f401.pphosted.com ([67.231.148.174]:59380 "EHLO mx0b-0016f401.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2387421AbgGVWMh (ORCPT ); Wed, 22 Jul 2020 18:12:37 -0400 Received: from pps.filterd (m0045849.ppops.net [127.0.0.1]) by mx0a-0016f401.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 06MM711F027569; Wed, 22 Jul 2020 15:12:21 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=pfpt0818; bh=abvwJyxQ5+FVGDhi3/w7dacNEWbcUQpv4mD6cdlqFSk=; b=Fi1UECe3nN7oqmktzUTw5sjwWSupwCXlNkqLEV2ukApFy3CS645Iq3TAm8XlT+Dq52Pv CYa7rPZwmcihmvF/xwJr1CdfRf+fK1eVmz03XqYARj8upd3Rle4JphprXtywCBYiyoV0 V5hQOGlPwUXRIXzhOR4TDIC07XloU/TLuD3rkmS14gLB02u1KLL6g6NOVlK0onSp0vUy +CP4iN8HgQe27HKCIjno2m+aMpjyKDMir6U3qgIU06B0KODXULSYfuBsnAjZ0GdMa4Mf SJWSEwFpXeSQG05Jpp/W5ujuemz3bJ7zaemr/CUqz7BLXiFRkKIlUfzxtNtnE6ZwFyic Fw== Received: from sc-exch01.marvell.com ([199.233.58.181]) by mx0a-0016f401.pphosted.com with ESMTP id 32bxentx9n-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Wed, 22 Jul 2020 15:12:21 -0700 Received: from DC5-EXCH02.marvell.com (10.69.176.39) by SC-EXCH01.marvell.com (10.93.176.81) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 22 Jul 2020 15:12:20 -0700 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH02.marvell.com (10.69.176.39) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 22 Jul 2020 15:12:20 -0700 Received: from NN-LT0049.marvell.com (NN-LT0049.marvell.com [10.193.54.6]) by maili.marvell.com (Postfix) with ESMTP id 47E6A3F703F; Wed, 22 Jul 2020 15:12:14 -0700 (PDT) From: Alexander Lobakin To: "David S. Miller" , Jakub Kicinski CC: Alexander Lobakin , Igor Russkikh , Michal Kalderon , "Ariel Elior" , Denis Bolotin , "Doug Ledford" , Jason Gunthorpe , "Alexei Starovoitov" , Daniel Borkmann , "Jesper Dangaard Brouer" , John Fastabend , Martin KaFai Lau , Song Liu , "Yonghong Song" , Andrii Nakryiko , KP Singh , , , , , Subject: [PATCH v2 net-next 11/15] qed: introduce qed_chain_get_elem_used{,u32}() Date: Thu, 23 Jul 2020 01:10:41 +0300 Message-ID: <20200722221045.5436-12-alobakin@marvell.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200722221045.5436-1-alobakin@marvell.com> References: <20200722221045.5436-1-alobakin@marvell.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235,18.0.687 definitions=2020-07-22_16:2020-07-22,2020-07-22 signatures=0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add reverse-variants of qed_chain_get_elem_left{,u32}() to be able to know current chain occupation. They will be used in the upcoming qede XDP_REDIRECT code. They share most of the logics with the mentioned ones, so were reused to collapse the latters. Signed-off-by: Alexander Lobakin Signed-off-by: Igor Russkikh Signed-off-by: Michal Kalderon --- include/linux/qed/qed_chain.h | 18 ++++++++++++++---- 1 file changed, 14 insertions(+), 4 deletions(-) diff --git a/include/linux/qed/qed_chain.h b/include/linux/qed/qed_chain.h index 434479e2ab65..4d58dc8943f0 100644 --- a/include/linux/qed/qed_chain.h +++ b/include/linux/qed/qed_chain.h @@ -203,7 +203,7 @@ static inline u32 qed_chain_get_cons_idx_u32(const struct qed_chain *chain) return chain->u.chain32.cons_idx; } -static inline u16 qed_chain_get_elem_left(const struct qed_chain *chain) +static inline u16 qed_chain_get_elem_used(const struct qed_chain *chain) { u32 prod = qed_chain_get_prod_idx(chain); u32 cons = qed_chain_get_cons_idx(chain); @@ -217,10 +217,15 @@ static inline u16 qed_chain_get_elem_left(const struct qed_chain *chain) if (chain->mode == QED_CHAIN_MODE_NEXT_PTR) used -= (u16)(prod / elem_per_page - cons / elem_per_page); - return (u16)(chain->capacity - used); + return used; } -static inline u32 qed_chain_get_elem_left_u32(const struct qed_chain *chain) +static inline u16 qed_chain_get_elem_left(const struct qed_chain *chain) +{ + return (u16)(chain->capacity - qed_chain_get_elem_used(chain)); +} + +static inline u32 qed_chain_get_elem_used_u32(const struct qed_chain *chain) { u64 prod = qed_chain_get_prod_idx_u32(chain); u64 cons = qed_chain_get_cons_idx_u32(chain); @@ -234,7 +239,12 @@ static inline u32 qed_chain_get_elem_left_u32(const struct qed_chain *chain) if (chain->mode == QED_CHAIN_MODE_NEXT_PTR) used -= (u32)(prod / elem_per_page - cons / elem_per_page); - return chain->capacity - used; + return used; +} + +static inline u32 qed_chain_get_elem_left_u32(const struct qed_chain *chain) +{ + return chain->capacity - qed_chain_get_elem_used_u32(chain); } static inline u16 qed_chain_get_usable_per_page(const struct qed_chain *chain) -- 2.25.1