From: "Ananyev, Konstantin" <konstantin.ananyev@intel.com>
To: Matan Azrad <matan@mellanox.com>,
Thomas Monjalon <thomas@monjalon.net>,
Gaetan Rivet <gaetan.rivet@6wind.com>,
"Wu, Jingjing" <jingjing.wu@intel.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
Neil Horman <nhorman@tuxdriver.com>,
"Richardson, Bruce" <bruce.richardson@intel.com>,
"stable@dpdk.org" <stable@dpdk.org>
Subject: Re: [dpdk-stable] [PATCH v3 2/7] ethdev: fix used portid allocation
Date: Fri, 19 Jan 2018 12:40:00 +0000 [thread overview]
Message-ID: <2601191342CEEE43887BDE71AB97725886280A89@irsmsx105.ger.corp.intel.com> (raw)
In-Reply-To: <1516293317-30748-3-git-send-email-matan@mellanox.com>
> -----Original Message-----
> From: Matan Azrad [mailto:matan@mellanox.com]
> Sent: Thursday, January 18, 2018 4:35 PM
> To: Thomas Monjalon <thomas@monjalon.net>; Gaetan Rivet <gaetan.rivet@6wind.com>; Wu, Jingjing <jingjing.wu@intel.com>
> Cc: dev@dpdk.org; Neil Horman <nhorman@tuxdriver.com>; Richardson, Bruce <bruce.richardson@intel.com>; Ananyev, Konstantin
> <konstantin.ananyev@intel.com>; stable@dpdk.org
> Subject: [PATCH v3 2/7] ethdev: fix used portid allocation
>
> rte_eth_dev_find_free_port() found a free port by state checking.
> The state field are in local process memory, so other DPDK processes
> may get the same port ID because their local states may be different.
>
> Replace the state checking by the ethdev port name checking,
> so, if the name is an empty string the port ID will be detected as
> unused.
>
> Fixes: d948f596fee2 ("ethdev: fix port data mismatched in multiple process model")
> Cc: stable@dpdk.org
>
> Suggested-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
> Signed-off-by: Matan Azrad <matan@mellanox.com>
> ---
> lib/librte_ether/rte_ethdev.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
> index 156231c..5d87f72 100644
> --- a/lib/librte_ether/rte_ethdev.c
> +++ b/lib/librte_ether/rte_ethdev.c
> @@ -164,7 +164,7 @@ struct rte_eth_dev *
> unsigned i;
>
> for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
> - if (rte_eth_devices[i].state == RTE_ETH_DEV_UNUSED)
> + if (rte_eth_dev_share_data->data[i].name[0] == '\0')
I know it is not really necessary, but I'd keep both (just in case):
if (rte_eth_devices[i].state == RTE_ETH_DEV_UNUSED) && rte_eth_dev_share_data->data[i].name[0] == '\0')
Aprart from that: Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
> return i;
> }
> return RTE_MAX_ETHPORTS;
> --
> 1.8.3.1
next prev parent reply other threads:[~2018-01-19 12:40 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1511870281-15282-1-git-send-email-matan@mellanox.com>
[not found] ` <1515318351-4756-1-git-send-email-matan@mellanox.com>
2018-01-07 9:45 ` [dpdk-stable] [PATCH v2 1/6] ethdev: fix port data reset timing Matan Azrad
[not found] ` <1516293317-30748-1-git-send-email-matan@mellanox.com>
2018-01-18 16:35 ` [dpdk-stable] [PATCH v3 1/7] " Matan Azrad
2018-01-18 17:00 ` Thomas Monjalon
2018-01-19 12:38 ` Ananyev, Konstantin
2018-03-05 11:24 ` Ferruh Yigit
2018-03-05 14:52 ` Matan Azrad
2018-03-05 15:06 ` Ferruh Yigit
2018-03-05 15:12 ` Matan Azrad
2018-03-27 22:37 ` Ferruh Yigit
2018-03-28 12:07 ` Matan Azrad
2018-03-30 10:39 ` Ferruh Yigit
2018-04-19 11:07 ` Ferruh Yigit
2018-04-25 12:16 ` Matan Azrad
2018-04-25 12:30 ` [dpdk-stable] [dpdk-dev] " Ori Kam
2018-04-25 12:54 ` [dpdk-stable] " Ferruh Yigit
2018-04-25 14:01 ` Matan Azrad
2018-01-18 16:35 ` [dpdk-stable] [PATCH v3 2/7] ethdev: fix used portid allocation Matan Azrad
2018-01-18 17:00 ` Thomas Monjalon
2018-01-19 12:40 ` Ananyev, Konstantin [this message]
2018-01-20 16:48 ` Matan Azrad
2018-01-20 17:26 ` Ananyev, Konstantin
[not found] ` <1516483468-9048-1-git-send-email-matan@mellanox.com>
2018-01-20 21:24 ` [dpdk-stable] [PATCH v4 1/7] ethdev: fix port data reset timing Matan Azrad
2018-01-20 21:24 ` [dpdk-stable] [PATCH v4 2/7] ethdev: fix used portid allocation Matan Azrad
[not found] ` <1516639103-27166-1-git-send-email-matan@mellanox.com>
2018-01-22 16:38 ` [dpdk-stable] [PATCH v5 1/7] ethdev: fix port data reset timing Matan Azrad
2018-01-22 16:38 ` [dpdk-stable] [PATCH v5 2/7] ethdev: fix used portid allocation Matan Azrad
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