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 F32B343BA4; Fri, 23 Feb 2024 20:07:26 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 7F76242DFE; Fri, 23 Feb 2024 20:04:54 +0100 (CET) Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by mails.dpdk.org (Postfix) with ESMTP id 524DD427DD for ; Fri, 23 Feb 2024 20:04:19 +0100 (CET) Received: by linux.microsoft.com (Postfix, from userid 1086) id 7507220B74D8; Fri, 23 Feb 2024 11:04:16 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 7507220B74D8 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1708715057; bh=R3Rzl4KhZNcLFGvxl9cuKwsi4FlaZ6ILktphsvRZKCI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UE6BfkKTIMGfRWYhE9Uux3+u9Oe9hz66Ipusip3eu2DVoGNiedUrolR7039btIAbk Klu4So/JP3MYl5olsOuoG9bpJnAzjcbG5XC04uI/jG9pbFEwpvFSULe/wI4FUAAsxD VvGifdzIssfbYtqJCcgSOZhJI02flHA4v2s8HQqg= From: Tyler Retzlaff To: dev@dpdk.org Cc: Andrew Rybchenko , Bruce Richardson , Chengwen Feng , Cristian Dumitrescu , David Christensen , David Hunt , Ferruh Yigit , Honnappa Nagarahalli , Jasvinder Singh , Jerin Jacob , Kevin Laatz , Konstantin Ananyev , Min Zhou , Ruifeng Wang , Sameh Gobriel , Stanislaw Kardach , Thomas Monjalon , Vladimir Medvedkin , Yipeng Wang , Tyler Retzlaff Subject: [PATCH v5 24/39] pdcp: use C11 alignas Date: Fri, 23 Feb 2024 11:03:59 -0800 Message-Id: <1708715054-22386-25-git-send-email-roretzla@linux.microsoft.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1708715054-22386-1-git-send-email-roretzla@linux.microsoft.com> References: <1707873986-29352-1-git-send-email-roretzla@linux.microsoft.com> <1708715054-22386-1-git-send-email-roretzla@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 The current location used for __rte_aligned(a) for alignment of types and variables is not compatible with MSVC. There is only a single location accepted by both toolchains. For variables standard C11 offers alignas(a) supported by conformant compilers i.e. both MSVC and GCC. For types the standard offers no alignment facility that compatibly interoperates with C and C++ but may be achieved by relocating the placement of __rte_aligned(a) to the aforementioned location accepted by all currently supported toolchains. To allow alignment for both compilers do the following: * Move __rte_aligned from the end of {struct,union} definitions to be between {struct,union} and tag. The placement between {struct,union} and the tag allows the desired alignment to be imparted on the type regardless of the toolchain being used for all of GCC, LLVM, MSVC compilers building both C and C++. * Replace use of __rte_aligned(a) on variables/fields with alignas(a). Signed-off-by: Tyler Retzlaff Acked-by: Morten Brørup --- lib/pdcp/rte_pdcp.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/lib/pdcp/rte_pdcp.h b/lib/pdcp/rte_pdcp.h index dd8b6e4..f74524f 100644 --- a/lib/pdcp/rte_pdcp.h +++ b/lib/pdcp/rte_pdcp.h @@ -49,7 +49,7 @@ typedef uint16_t (*rte_pdcp_post_p_t)(const struct rte_pdcp_entity *entity, * A PDCP entity is associated either to the control plane or the user plane * depending on which radio bearer it is carrying data for. */ -struct rte_pdcp_entity { +struct __rte_cache_aligned rte_pdcp_entity { /** Entity specific pre-process handle. */ rte_pdcp_pre_p_t pre_process; /** Entity specific post-process handle. */ @@ -66,7 +66,7 @@ struct rte_pdcp_entity { * hold additionally 'max_pkt_cache' number of packets. */ uint32_t max_pkt_cache; -} __rte_cache_aligned; +}; /** * Callback function type for t-Reordering timer start, set during PDCP entity establish. -- 1.8.3.1