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 5BE1E42BF2 for ; Fri, 2 Jun 2023 13:44:47 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 32EC342D50; Fri, 2 Jun 2023 13:44:44 +0200 (CEST) Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by mails.dpdk.org (Postfix) with ESMTP id 37E9542D43; Fri, 2 Jun 2023 13:44:41 +0200 (CEST) Received: from kwepemi500017.china.huawei.com (unknown [172.30.72.57]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4QXgz20WhbzqSMg; Fri, 2 Jun 2023 19:39:58 +0800 (CST) Received: from localhost.localdomain (10.28.79.22) by kwepemi500017.china.huawei.com (7.221.188.110) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.23; Fri, 2 Jun 2023 19:44:39 +0800 From: Dongdong Liu To: , , , , CC: , , , , Subject: [PATCH v2 06/11] net/hns3: fix mbuf leak when start rxq after resetting Date: Fri, 2 Jun 2023 19:42:00 +0800 Message-ID: <20230602114205.29589-7-liudongdong3@huawei.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20230602114205.29589-1-liudongdong3@huawei.com> References: <20230529130940.1501-1-liudongdong3@huawei.com> <20230602114205.29589-1-liudongdong3@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.28.79.22] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To kwepemi500017.china.huawei.com (7.221.188.110) X-CFilter-Loop: Reflected X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org From: Chengwen Feng In the reset restore-conf phase, the reset process will allocate for the Rx ring mbufs unconditionlly. And the rte_eth_dev_rx_queue_start() will also allocate for the Rx ring mbufs unconditionlly. So if the rte_eth_dev_rx_queue_start() is invoked after restore-conf phase, then the mbufs allocated in restore-conf phase will leak. So fix it by conditional release Rx ring mbufs in rte_eth_dev_rx_queue_start(): if the Rx ring mbufs were allocated then release them first. This patch also set all sw-ring[]'s mbuf is NULL when release Rx ring mbufs so that we can determine whether the Rx ring mbufs were allocated based only on the first sw-ring[0]'s mbuf. Fixes: fa29fe45a7b4 ("net/hns3: support queue start and stop") Cc: stable@dpdk.org Signed-off-by: Chengwen Feng Signed-off-by: Dongdong Liu --- drivers/net/hns3/hns3_rxtx.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/hns3/hns3_rxtx.c b/drivers/net/hns3/hns3_rxtx.c index 2bfc5507e3..2493748683 100644 --- a/drivers/net/hns3/hns3_rxtx.c +++ b/drivers/net/hns3/hns3_rxtx.c @@ -50,6 +50,8 @@ hns3_rx_queue_release_mbufs(struct hns3_rx_queue *rxq) rxq->sw_ring[i].mbuf = NULL; } } + for (i = 0; i < rxq->rx_rearm_nb; i++) + rxq->sw_ring[rxq->rx_rearm_start + i].mbuf = NULL; } for (i = 0; i < rxq->bulk_mbuf_num; i++) @@ -4538,6 +4540,9 @@ hns3_dev_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id) return ret; } + if (rxq->sw_ring[0].mbuf != NULL) + hns3_rx_queue_release_mbufs(rxq); + ret = hns3_init_rxq(hns, rx_queue_id); if (ret) { hns3_err(hw, "fail to init Rx queue %u, ret = %d.", -- 2.22.0