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[
    {
        "id": 82735,
        "web_url": "http://patches.dpdk.org/comment/82735/",
        "msgid": "<ac7a997e-2534-c668-deb8-59d25b58480f@redhat.com>",
        "list_archive_url": "https://inbox.dpdk.org/dev/ac7a997e-2534-c668-deb8-59d25b58480f@redhat.com",
        "date": "2018-06-27T08:24:25",
        "subject": "Re: [dpdk-dev] [PATCH v5 23/24] net/vhost: enable port detach on\n\tsecondary process",
        "submitter": {
            "id": 512,
            "url": "http://patches.dpdk.org/api/people/512/",
            "name": "Maxime Coquelin",
            "email": "maxime.coquelin@redhat.com"
        },
        "content": "On 06/27/2018 09:17 AM, Qi Zhang wrote:\n> Previously, detach port on secondary process will mess primary\n> process and cause same device can't be attached again, by take\n> advantage of rte_eth_release_port_private, we can support this\n> with minor change.\n> \n> Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>\n> ---\n>   drivers/net/vhost/rte_eth_vhost.c | 11 +++++++++++\n>   1 file changed, 11 insertions(+)\n> \n> diff --git a/drivers/net/vhost/rte_eth_vhost.c b/drivers/net/vhost/rte_eth_vhost.c\n> index ba9d768a0..f773711b4 100644\n> --- a/drivers/net/vhost/rte_eth_vhost.c\n> +++ b/drivers/net/vhost/rte_eth_vhost.c\n> @@ -1353,6 +1353,7 @@ rte_pmd_vhost_probe(struct rte_vdev_device *dev)\n>   \t\t}\n>   \t\t/* TODO: request info from primary to set up Rx and Tx */\n>   \t\teth_dev->dev_ops = &ops;\n> +\t\teth_dev->device = &dev->device;\n>   \t\trte_eth_dev_probing_finish(eth_dev);\n>   \t\treturn 0;\n>   \t}\n> @@ -1435,6 +1436,16 @@ rte_pmd_vhost_remove(struct rte_vdev_device *dev)\n>   \tif (eth_dev == NULL)\n>   \t\treturn -ENODEV;\n>   \n> +\tif (rte_eal_process_type() != RTE_PROC_PRIMARY) {\n> +\t\t/* detach device on local pprocess only */\n> +\t\tif (strlen(rte_vdev_device_args(dev)) == 0)\n> +\t\t\treturn rte_eth_dev_release_port_private(eth_dev);\n> +\t\t/**\n> +\t\t * else this is a private device for current process\n> +\t\t * so continue with normal detach scenario\n> +\t\t */\n> +\t}\n> +\n\nIMHO, the driver shouldn't have to manage primary/secondary process\nstuff. It does not look like the right place to me.\n\n>   \teth_dev_close(eth_dev);\n>   \n>   \trte_free(vring_states[eth_dev->data->port_id]);\n>",
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            "From": "Maxime Coquelin <maxime.coquelin@redhat.com>",
            "To": "Qi Zhang <qi.z.zhang@intel.com>, thomas@monjalon.net,\n\tanatoly.burakov@intel.com",
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            "References": "<20180607123849.14439-1-qi.z.zhang@intel.com>\n\t<20180627071740.19870-1-qi.z.zhang@intel.com>\n\t<20180627071740.19870-24-qi.z.zhang@intel.com>",
            "Subject": "Re: [dpdk-dev] [PATCH v5 23/24] net/vhost: enable port detach on\n\tsecondary process",
            "Date": "Wed, 27 Jun 2018 10:24:25 +0200",
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            "Cc": "konstantin.ananyev@intel.com, dev@dpdk.org, bruce.richardson@intel.com, \n\tferruh.yigit@intel.com, benjamin.h.shelton@intel.com,\n\tnarender.vangati@intel.com"
        }
    }
]