From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mailout1.radware.com (mailout1.radwarecloud.com [192.115.180.130]) by dpdk.org (Postfix) with ESMTP id 366BC2BB4 for ; Wed, 22 Feb 2017 16:40:36 +0100 (CET) Received: from localhost.localdomain (176.200.121.204) by ILCAS1.corp.radware.com (176.200.120.121) with Microsoft SMTP Server id 14.3.319.2; Wed, 22 Feb 2017 17:40:34 +0200 From: Ami Sabo To: CC: , Ami Sabo Date: Wed, 22 Feb 2017 17:40:28 +0200 Message-ID: <1487778028-30090-1-git-send-email-amis@radware.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1487762487-21698-amis@radware.com> References: <1487762487-21698-amis@radware.com> MIME-Version: 1.0 Content-Type: text/plain X-TM-AS-Product-Ver: SMEX-11.0.0.4179-8.100.1062-22902.000 X-TM-AS-Result: No--7.286700-0.000000-31 X-TM-AS-User-Approved-Sender: Yes X-TM-AS-User-Blocked-Sender: No Subject: [dpdk-dev] [PATCH v2] net/virtio-user: fix multi-process issue 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: , X-List-Received-Date: Wed, 22 Feb 2017 15:40:36 -0000 Secondary process doesn't properly attach to the rte_eth_device initialized by the primary process. Accessing device from secondary process (e.g. via rte_eth_rx_burst), causes process to crash. because rte_eth_dev_data is not properly set. The issue was flood by 'commit 7f95f78a8aea ("ethdev: clear data when allocating device")' which now clears rte_eth_dev_data entry. So, most of the rte_eth_dev_data fields are not initialized. For pci devices these fields are initialized by rte_eth_dev_pci_probe ->eth_dev_attach_secondary(). However, for virtio-user virtio_user_pmd_probe() is called instead of rte_eth_dev_pci_probe(). To fix it: Allow non-pci drivers call to dev_attach_secondary() and call it (for secondary process) from virtio_user_pmd_probe. --- v2: * Fix coding style issues. Signed-off-by: Ami Sabo --- drivers/net/virtio/virtio_user_ethdev.c | 38 ++++++++++++++++----------------- lib/librte_ether/rte_ethdev.h | 4 ++-- lib/librte_ether/rte_ether_version.map | 2 +- 3 files changed, 22 insertions(+), 22 deletions(-) diff --git a/drivers/net/virtio/virtio_user_ethdev.c b/drivers/net/virtio/virtio_user_ethdev.c index 5291294..9b3c266 100644 --- a/drivers/net/virtio/virtio_user_ethdev.c +++ b/drivers/net/virtio/virtio_user_ethdev.c @@ -418,25 +418,25 @@ virtio_user_pmd_probe(const char *name, const char *params) goto end; } - if (rte_eal_process_type() == RTE_PROC_PRIMARY) { - eth_dev = virtio_user_eth_dev_alloc(name); - if (!eth_dev) { - PMD_INIT_LOG(ERR, "virtio_user fails to alloc device"); - goto end; - } - hw = eth_dev->data->dev_private; - if (virtio_user_dev_init(hw->virtio_user_dev, path, queues, cq, - queue_size, mac_addr) < 0) { - PMD_INIT_LOG(ERR, "virtio_user_dev_init fails"); - virtio_user_eth_dev_free(eth_dev); - goto end; - } - } else { - eth_dev = rte_eth_dev_attach_secondary(name); - if (!eth_dev) { - goto end; - } - } + if (rte_eal_process_type() == RTE_PROC_PRIMARY) { + eth_dev = virtio_user_eth_dev_alloc(name); + if (!eth_dev) { + PMD_INIT_LOG(ERR, "virtio_user fails to alloc device"); + goto end; + } + hw = eth_dev->data->dev_private; + if (virtio_user_dev_init(hw->virtio_user_dev, path, queues, cq, + queue_size, mac_addr) < 0) { + PMD_INIT_LOG(ERR, "virtio_user_dev_init fails"); + virtio_user_eth_dev_free(eth_dev); + goto end; + } + } else { + eth_dev = rte_eth_dev_attach_secondary(name); + if (!eth_dev) { + goto end; + } + } /* previously called by rte_eal_pci_probe() for physical dev */ if (eth_virtio_dev_init(eth_dev) < 0) { diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h index b30829f..3281205 100644 --- a/lib/librte_ether/rte_ethdev.h +++ b/lib/librte_ether/rte_ethdev.h @@ -1762,8 +1762,8 @@ struct rte_eth_dev *rte_eth_dev_allocate(const char *name); /** * @internal - * Attach to the ethdev already initialized by the primary - * process. + * Attach to the ethdev already initialized by the primary + * process. * * @param name Ethernet device's name. @return diff --git a/lib/librte_ether/rte_ether_version.map b/lib/librte_ether/rte_ether_version.map index ed4917c..f8bf2ee 100644 --- a/lib/librte_ether/rte_ether_version.map +++ b/lib/librte_ether/rte_ether_version.map @@ -152,6 +152,6 @@ DPDK_17.02 { rte_flow_flush; rte_flow_query; rte_flow_validate; - rte_eth_dev_attach_secondary; + rte_eth_dev_attach_secondary; } DPDK_16.11; -- 2.7.4