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From: Huisong Li <lihuisong@huawei.com>
To: <dev@dpdk.org>, <ferruh.yigit@intel.com>, <thomas@monjalon.net>
Subject: [dpdk-dev] Questions about reporting auto-negotiation capability
Date: Mon, 29 Mar 2021 12:02:32 +0800
Message-ID: <2a9f3c44-44da-854b-8b25-772a3570baa4@huawei.com> (raw)

Hi, all

         'speed_capa' in struct rte_eth_dev_info is defined as follows:

uint32_t speed_capa;  /**< Supported speeds bitmap (ETH_LINK_SPEED_). */


       Most PMD drivers use this field to report the speeds capability 
supported by the device to the upper-layer app.

But it seems that few NICs report their auto-negotiation capability 
through this field. If NIC also uses it to report

their auto-negotiation capability through this field, and should set it 
to ETH_LINK_SPEED_AUTONEG(0) based on

the definition of ETH_LINK_SPEED_xxx. In this case, it conflicts the 
report of the speeds capability .


I don't know how to correctly report the auto-negotiation capability of 
the device. Thanks for your reply.




             reply	other threads:[~2021-03-29  4:02 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-29  4:02 Huisong Li [this message]
2021-03-29  7:03 ` Thomas Monjalon
2021-03-29  7:19   ` Thomas Monjalon
2021-03-29 11:44     ` Huisong Li
2021-03-29 12:05       ` Thomas Monjalon
2021-03-29 14:18     ` Ajit Khaparde
2021-03-29  7:28 ` [dpdk-dev] [PATCH] drivers/net: remove useless autoneg capability Thomas Monjalon
2021-03-29 14:12   ` Ajit Khaparde
2021-04-01 13:26     ` Ferruh Yigit

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