From patchwork Tue Jun 23 06:48:54 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chengchang Tang X-Patchwork-Id: 72000 X-Patchwork-Delegate: ferruh.yigit@amd.com Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 8B7B4A0350; Tue, 23 Jun 2020 08:50:47 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 290B61D542; Tue, 23 Jun 2020 08:50:47 +0200 (CEST) Received: from huawei.com (szxga07-in.huawei.com [45.249.212.35]) by dpdk.org (Postfix) with ESMTP id F328C1D53A for ; Tue, 23 Jun 2020 08:50:45 +0200 (CEST) Received: from DGGEMS411-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id 7866DCAA709C62043F50; Tue, 23 Jun 2020 14:50:43 +0800 (CST) Received: from localhost.localdomain (10.69.192.56) by DGGEMS411-HUB.china.huawei.com (10.3.19.211) with Microsoft SMTP Server id 14.3.487.0; Tue, 23 Jun 2020 14:50:35 +0800 From: Chengchang Tang To: CC: , , , Date: Tue, 23 Jun 2020 14:48:54 +0800 Message-ID: <1592894934-57856-1-git-send-email-tangchengchang@huawei.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.69.192.56] X-CFilter-Loop: Reflected Subject: [dpdk-dev] [RFC] ethdev: add a field for rte_eth_rxq_info X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" In common practice, PMD configure the rx_buf_size according to the data room size of the object in mempool. But in fact the final value is related to the specifications of hw, and its values will affect the number of fragments in recieving pkts. At present, we seem to have no way to espose relevant information to upper layer users. Add a field named rx_bufsize in rte_eth_rxq_info to indicate the buffer size used in recieving pkts for hw. Signed-off-by: Chengchang Tang Acked-by: Andrew Rybchenko --- lib/librte_ethdev/rte_ethdev.h | 1 + 1 file changed, 1 insertion(+) -- 2.7.4 diff --git a/lib/librte_ethdev/rte_ethdev.h b/lib/librte_ethdev/rte_ethdev.h index 0f6d053..82b7e98 100644 --- a/lib/librte_ethdev/rte_ethdev.h +++ b/lib/librte_ethdev/rte_ethdev.h @@ -1306,6 +1306,7 @@ struct rte_eth_rxq_info { struct rte_eth_rxconf conf; /**< queue config parameters. */ uint8_t scattered_rx; /**< scattered packets RX supported. */ uint16_t nb_desc; /**< configured number of RXDs. */ + uint16_t rx_bufsize; /**< size of RX buffer. */ } __rte_cache_min_aligned; /**