From: bugzilla@dpdk.org
To: dev@dpdk.org
Subject: [Bug 1026] ethdev API: rte_eth_dev_adjust_nb_rx_tx_desc
Date: Mon, 06 Jun 2022 10:09:21 +0000 [thread overview]
Message-ID: <bug-1026-3@http.bugs.dpdk.org/> (raw)
https://bugs.dpdk.org/show_bug.cgi?id=1026
Bug ID: 1026
Summary: ethdev API: rte_eth_dev_adjust_nb_rx_tx_desc
Product: DPDK
Version: 20.11
Hardware: All
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: Normal
Component: ethdev
Assignee: dev@dpdk.org
Reporter: giovanni.tosatti@infovista.com
Target Milestone: ---
We are using the "rte_eth_dev_adjust_nb_rx_tx_desc" API in order to get the
descriptors limits of a NIC. Basically, by initializing the desc parameters
with an "uint16_t" value it should returns the top limit and it is working fine
with some NICs (e.g. Mellanox Cx5).
The problem is that some NIC's (e.g. Intel XXV710) seems to not really support
"unsigned" value by returning the lower limit instead. Differently, it works
correctly returning the top limit by using 32767 instead of 65535.
Please, could you confirm if this is a know issue ?
Thanks,
Giovanni
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