From: Ferruh Yigit <ferruh.yigit@intel.com>
To: Stephen Hemminger <stephen@networkplumber.org>,
Hemant Agrawal <hemant.agrawal@nxp.com>,
Sachin Saxena <sachin.saxena@nxp.com>
Cc: dev@dpdk.org, Gagandeep Singh <g.singh@nxp.com>,
Akhil Goyal <akhil.goyal@nxp.com>
Subject: Re: [dpdk-dev] Misuses of dev_info->if_index in embedded drivers.
Date: Mon, 24 Aug 2020 16:18:31 +0100 [thread overview]
Message-ID: <3f126048-c0a6-fcac-8819-7e2affdf811a@intel.com> (raw)
In-Reply-To: <20200824080733.064b4748@hermes.lan>
On 8/24/2020 4:07 PM, Stephen Hemminger wrote:
> The use of if_index in some drivers is wrong.
> It does not match the user expectation in the documentation.
>
> This code:
> dpaa2/dpaa2_ethdev.c: dev_info->if_index = priv->hw_id;
> pfe/pfe_ethdev.c: dev_info->if_index = internals->id;
>
> Does match:
> struct rte_eth_dev_info {
> struct rte_device *device; /** Generic device information */
> const char *driver_name; /**< Device Driver name. */
> unsigned int if_index; /**< Index to bound host interface, or 0 if none.
> Use if_indextoname() to translate into an interface name. */
>
> Also, this code is unnecessary.
>
'if_index' is needed only for some PMDs interact with kernel, like af_packet,
pcap, tap, af_xdp, ...
Agree that it should not be needed for 'dpaa2' or 'pfe'.
next prev parent reply other threads:[~2020-08-24 15:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-24 15:07 Stephen Hemminger
2020-08-24 15:18 ` Ferruh Yigit [this message]
2020-08-24 15:33 ` Hemant Agrawal
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