From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 1C778A04B1; Wed, 26 Aug 2020 03:59:45 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 4AA7E14581; Wed, 26 Aug 2020 03:59:39 +0200 (CEST) Received: from huawei.com (szxga06-in.huawei.com [45.249.212.32]) by dpdk.org (Postfix) with ESMTP id C36F64C99 for ; Wed, 26 Aug 2020 03:59:35 +0200 (CEST) Received: from DGGEMS407-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id 8B8E74559712621D3D9C; Wed, 26 Aug 2020 09:59:33 +0800 (CST) Received: from localhost.localdomain (10.69.192.56) by DGGEMS407-HUB.china.huawei.com (10.3.19.207) with Microsoft SMTP Server id 14.3.487.0; Wed, 26 Aug 2020 09:59:23 +0800 From: Chengchang Tang To: CC: , , , Date: Wed, 26 Aug 2020 09:57:11 +0800 Message-ID: <1598407034-19061-1-git-send-email-tangchengchang@huawei.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1592483709-7076-1-git-send-email-tangchengchang@huawei.com> References: <1592483709-7076-1-git-send-email-tangchengchang@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.69.192.56] X-CFilter-Loop: Reflected Subject: [dpdk-dev] [PATCH 0/3] add RX buffer size 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 buffer size which indicate the buffer length could be used for HW in receiving packets 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 receiving packets when scatter is enabled. By the way, some PMDs may force to enable scatter when the MTU is bigger than the HW RX buffer size. At present, we have no way to expose relevant information to upper layer users. So, add a field named rx_buf_size in rte_eth_rxq_info to indicate the buffer size used in receiving packets for HW. And this field is optional, so there is no need to forcibly update all PMDs. This patchset also add hns3 PMD implementation and update the testpmd. Chengchang Tang (3): ethdev: add a field for rte_eth_rxq_info app/testpmd: Add RX buffer size display in queue info querry net/hns3: add rx buffer size to rx qinfo querry app/test-pmd/config.c | 1 + drivers/net/hns3/hns3_rxtx.c | 2 ++ lib/librte_ethdev/rte_ethdev.h | 2 ++ 3 files changed, 5 insertions(+) -- 2.7.4