[PATCH 0/1] net/mlx5: show rx/tx descriptor ring limitations in rte_eth_dev_info

[Igor Gutorov]

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(-)

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2.45.2