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 8A8DCA04A2 for ; Sat, 25 Dec 2021 11:58:44 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 0B0294111B; Sat, 25 Dec 2021 11:58:44 +0100 (CET) Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by mails.dpdk.org (Postfix) with ESMTP id C39304067B for ; Sat, 25 Dec 2021 11:58:41 +0100 (CET) Received: from kwepemi100008.china.huawei.com (unknown [172.30.72.57]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4JLgrk1CfSzbjJ5; Sat, 25 Dec 2021 18:58:14 +0800 (CST) Received: from kwepemm600004.china.huawei.com (7.193.23.242) by kwepemi100008.china.huawei.com (7.221.188.57) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.20; Sat, 25 Dec 2021 18:58:39 +0800 Received: from localhost.localdomain (10.67.165.24) by kwepemm600004.china.huawei.com (7.193.23.242) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.20; Sat, 25 Dec 2021 18:58:39 +0800 From: Huisong Li To: , CC: , Subject: [PATCH 19.11 3/4] net/hns3: fix multi-process action register and unregister Date: Sat, 25 Dec 2021 18:53:43 +0800 Message-ID: <20211225105344.28355-4-lihuisong@huawei.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211225105344.28355-1-lihuisong@huawei.com> References: <20211225105344.28355-1-lihuisong@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.67.165.24] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To kwepemm600004.china.huawei.com (7.193.23.242) 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 [ upstream commit 841f8693536f9410fd51d385e1090d35cfe59914 ] The multi-process has the following problems: 1) After a port in primary process is closed, the mp action of the process is unregistered. Which will cause that other device in the primary process cannot respond to requests from secondary processes. 2) Because variable "hns3_inited" is set to true without returning an initial value, the mp action cannot be registered again after it is unregistered. 3) The mp action of primary and secondary process need to be registered only once regardless of port numbers in the process. That's what variable "hns3_inited" does. But the variable is difficult to understand. This patch adds a hns3_process_local_data structure to resolve above problems. Fixes: 9570b1fdbdad ("net/hns3: check multi-process action register result") Fixes: 23d4b61fee5d ("net/hns3: support multiple process") Signed-off-by: Huisong Li Signed-off-by: Min Hu (Connor) --- drivers/net/hns3/hns3_ethdev.c | 2 ++ drivers/net/hns3/hns3_ethdev_vf.c | 2 ++ drivers/net/hns3/hns3_mp.c | 37 ++++++++++++++++++------------- drivers/net/hns3/hns3_mp.h | 7 ++++++ 4 files changed, 33 insertions(+), 15 deletions(-) diff --git a/drivers/net/hns3/hns3_ethdev.c b/drivers/net/hns3/hns3_ethdev.c index d245c5db8b..122a2bc66c 100644 --- a/drivers/net/hns3/hns3_ethdev.c +++ b/drivers/net/hns3/hns3_ethdev.c @@ -5439,6 +5439,7 @@ hns3_dev_init(struct rte_eth_dev *eth_dev) goto err_mp_init_secondary; } __atomic_fetch_add(&hw->secondary_cnt, 1, __ATOMIC_RELAXED); + process_data.eth_dev_cnt++; return 0; } @@ -5449,6 +5450,7 @@ hns3_dev_init(struct rte_eth_dev *eth_dev) ret); goto err_mp_init_primary; } + process_data.eth_dev_cnt++; hw->adapter_state = HNS3_NIC_UNINITIALIZED; diff --git a/drivers/net/hns3/hns3_ethdev_vf.c b/drivers/net/hns3/hns3_ethdev_vf.c index 972a6f00e4..562f6f7662 100644 --- a/drivers/net/hns3/hns3_ethdev_vf.c +++ b/drivers/net/hns3/hns3_ethdev_vf.c @@ -2294,6 +2294,7 @@ hns3vf_dev_init(struct rte_eth_dev *eth_dev) goto err_mp_init_secondary; } __atomic_fetch_add(&hw->secondary_cnt, 1, __ATOMIC_RELAXED); + process_data.eth_dev_cnt++; return 0; } @@ -2304,6 +2305,7 @@ hns3vf_dev_init(struct rte_eth_dev *eth_dev) ret); goto err_mp_init_primary; } + process_data.eth_dev_cnt++; hw->adapter_state = HNS3_NIC_UNINITIALIZED; hns->is_vf = true; diff --git a/drivers/net/hns3/hns3_mp.c b/drivers/net/hns3/hns3_mp.c index 9b5ff475a9..c7e49a798a 100644 --- a/drivers/net/hns3/hns3_mp.c +++ b/drivers/net/hns3/hns3_mp.c @@ -14,7 +14,8 @@ #include "hns3_rxtx.h" #include "hns3_mp.h" -static bool hns3_inited; +/* local data for primary or secondary process. */ +struct hns3_process_local_data process_data; /* * Initialize IPC message. @@ -199,14 +200,15 @@ int hns3_mp_init_primary(void) { int ret; - if (!hns3_inited) { - /* primary is allowed to not support IPC */ - ret = rte_mp_action_register(HNS3_MP_NAME, mp_primary_handle); - if (ret && rte_errno != ENOTSUP) - return ret; + if (process_data.init_done) + return 0; - hns3_inited = true; - } + /* primary is allowed to not support IPC */ + ret = rte_mp_action_register(HNS3_MP_NAME, mp_primary_handle); + if (ret && rte_errno != ENOTSUP) + return ret; + + process_data.init_done = true; return 0; } @@ -216,8 +218,12 @@ int hns3_mp_init_primary(void) */ void hns3_mp_uninit_primary(void) { - if (hns3_inited) + process_data.eth_dev_cnt--; + + if (process_data.eth_dev_cnt == 0) { rte_mp_action_unregister(HNS3_MP_NAME); + process_data.init_done = false; + } } /* @@ -227,13 +233,14 @@ int hns3_mp_init_secondary(void) { int ret; - if (!hns3_inited) { - ret = rte_mp_action_register(HNS3_MP_NAME, mp_secondary_handle); - if (ret) - return ret; + if (process_data.init_done) + return 0; - hns3_inited = true; - } + ret = rte_mp_action_register(HNS3_MP_NAME, mp_secondary_handle); + if (ret) + return ret; + + process_data.init_done = true; return 0; } diff --git a/drivers/net/hns3/hns3_mp.h b/drivers/net/hns3/hns3_mp.h index 60ef2315db..8ef432e763 100644 --- a/drivers/net/hns3/hns3_mp.h +++ b/drivers/net/hns3/hns3_mp.h @@ -5,6 +5,13 @@ #ifndef _HNS3_MP_H_ #define _HNS3_MP_H_ +/* Local data for primary or secondary process. */ +struct hns3_process_local_data { + bool init_done; /* Process action register completed flag. */ + int eth_dev_cnt; /* Ethdev count under the current process. */ +}; +extern struct hns3_process_local_data process_data; + void hns3_mp_req_start_rxtx(struct rte_eth_dev *dev); void hns3_mp_req_stop_rxtx(struct rte_eth_dev *dev); int hns3_mp_init_primary(void); -- 2.33.0