From: Igor Gutorov <igootorov@gmail.com>
To: dsosnowski@nvidia.com, viacheslavo@nvidia.com, orika@nvidia.com,
suanmingm@nvidia.com, matan@nvidia.com
Cc: dev@dpdk.org, Igor Gutorov <igootorov@gmail.com>
Subject: [PATCH 0/1] net/mlx5: show rx/tx descriptor ring limitations in rte_eth_dev_info
Date: Sun, 16 Jun 2024 20:38:02 +0300 [thread overview]
Message-ID: <20240616173803.424025-1-igootorov@gmail.com> (raw)
Hello,
This patch fixes an issue with my ConnectX5 NIC (15b3:1019) showing
65535 as the maximum number of RX descriptors.
So, a disclaimer: I don't know whether other NICs (ConnectX6?) allow
larger values. The value of 8192 was obtained experimentally with
ethtool: ethtool -G *nic* rx 8192, as I do not have the NIC
programmer's manual.
Using anything larger than 8192 resulted in an error. Similarly,
anything in the [8193, 32768) range with the DPDK PMD results in an rx
queue allocation failure.
Igor Gutorov (1):
net/mlx5: show rx/tx descriptor ring limitations in rte_eth_dev_info
drivers/net/mlx5/mlx5_defs.h | 3 +++
drivers/net/mlx5/mlx5_ethdev.c | 5 ++++-
2 files changed, 7 insertions(+), 1 deletion(-)
--
2.45.2
next reply other threads:[~2024-06-16 17:39 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-16 17:38 Igor Gutorov [this message]
2024-06-16 17:38 ` [PATCH 1/1] " Igor Gutorov
2024-06-17 7:18 ` Slava Ovsiienko
2024-06-18 22:56 ` [PATCH v2 0/1] net/mlx5: fix incorrect rx/tx descriptor " Igor Gutorov
2024-06-18 22:56 ` [PATCH v2] " Igor Gutorov
2024-06-23 11:34 ` [PATCH v2 0/1] " Slava Ovsiienko
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