From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 7392145C82; Tue, 5 Nov 2024 04:18:25 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 7455F427DD; Tue, 5 Nov 2024 04:17:48 +0100 (CET) Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by mails.dpdk.org (Postfix) with ESMTP id 10A64427A9 for ; Tue, 5 Nov 2024 04:17:38 +0100 (CET) Received: by linux.microsoft.com (Postfix, from userid 1213) id 60BDE2126CA8; Mon, 4 Nov 2024 19:17:36 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 60BDE2126CA8 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1730776656; bh=gByhRExOHZiNFVYqLFO3NOI78MfZBp+8jKABKesXIUA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fbtuHTW6fI9SPvtVVpHdW3MZqIfcxaCWvs25yqc/QCn2e/rw2vcuINVncZf6XFIdi Y7hySRs5b2wJUlFHmYPFMvxLh6b7zEOQxYw6CEEx0Lh6ThJk5x+k5cDFjpxOeK5mWE /MYTHr6O/wqtcn+BSAp4psJwkmAFS6YcN3J3kM/M= From: Andre Muezerie To: stephen@networkplumber.org Cc: aman.deep.singh@intel.com, anatoly.burakov@intel.com, andrew.rybchenko@oktetlabs.ru, bruce.richardson@intel.com, dev@dpdk.org, dmitry.kozliuk@gmail.com, dsosnowski@nvidia.com, fanzhang.oss@gmail.com, fengchengwen@huawei.com, ferruh.yigit@amd.com, gakhil@marvell.com, harry.van.haaren@intel.com, hkalra@marvell.com, honnappa.nagarahalli@arm.com, hujiayu.hu@foxmail.com, jingjing.wu@intel.com, kevin.laatz@intel.com, konstantin.v.ananyev@yandex.ru, matan@nvidia.com, mb@smartsharesystems.com, orika@nvidia.com, pallavi.kadam@intel.com, reshma.pattan@intel.com, roretzla@linux.microsoft.com, sameh.gobriel@intel.com, suanmingm@nvidia.com, thomas@monjalon.net, vfialko@marvell.com, viacheslavo@nvidia.com, vladimir.medvedkin@intel.com, yipeng1.wang@intel.com, Konstantin Ananyev Subject: [PATCH v4 06/19] hash/thash: remove use of VLAs for Windows built Date: Mon, 4 Nov 2024 19:15:40 -0800 Message-Id: <1730776553-31277-7-git-send-email-andremue@linux.microsoft.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1730776553-31277-1-git-send-email-andremue@linux.microsoft.com> References: <1713397319-26135-1-git-send-email-roretzla@linux.microsoft.com> <1730776553-31277-1-git-send-email-andremue@linux.microsoft.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org From: Konstantin Ananyev 1) ./lib/hash/rte_thash.c:774:9 : warning: ISO C90 forbids variable length array ‘tmp_tuple’ >From my understanding, tuple size here should never exceed sizeof(union rte_thash_tuple), so it should be safe to replace VLA with fixed size array. Signed-off-by: Konstantin Ananyev --- lib/hash/rte_thash.c | 2 +- lib/hash/rte_thash.h | 8 ++++++++ 2 files changed, 9 insertions(+), 1 deletion(-) diff --git a/lib/hash/rte_thash.c b/lib/hash/rte_thash.c index 99a685f0c8..8ecadb9fef 100644 --- a/lib/hash/rte_thash.c +++ b/lib/hash/rte_thash.c @@ -795,7 +795,7 @@ rte_thash_adjust_tuple(struct rte_thash_ctx *ctx, uint32_t desired_value, unsigned int attempts, rte_thash_check_tuple_t fn, void *userdata) { - uint32_t tmp_tuple[tuple_len / sizeof(uint32_t)]; + uint32_t tmp_tuple[RTE_THASH_MAX_L4_LEN]; unsigned int i, j, ret = 0; uint32_t hash, adj_bits; const uint8_t *hash_key; diff --git a/lib/hash/rte_thash.h b/lib/hash/rte_thash.h index e8fdb89530..3ee22c9e32 100644 --- a/lib/hash/rte_thash.h +++ b/lib/hash/rte_thash.h @@ -108,6 +108,14 @@ union rte_thash_tuple { struct rte_ipv6_tuple v6; }; +/** + * maximum length in dwords of input tuple to + * calculate hash of ipv(4|6) header + + * transport header + */ +#define RTE_THASH_MAX_L4_LEN \ + ((sizeof(union rte_thash_tuple)) / sizeof(uint32_t)) + /** * Prepare special converted key to use with rte_softrss_be() * @param orig -- 2.34.1