Module Parameters

DRSS

Number of hardware queues for Default Queue (DEFQ) RSS.

Note: This parameter replaces the previously used “drss” parameter which is now obsolete.

• 2-16

• 0 - disabled

When this value is != 0, DEFQ RSS is enabled with 1 RSS Uplink queue that manages the 'drss' hardware queues.

Notes:

• The value must be a power of 2.

• The value must not exceed num. of CPU cores.

• Setting the DRSS value to 16, sets the Steering Mode to device RSS

ecn

Enables the ECN feature

• 1 - enabled

• 0 - disabled (Default)

enable_nmlx_debug

Enables debug prints for the core module.

• 1 - enabled

• 0 - disabled (Default)

max_vfs

max_vfs is an array of comma separated integer values, that represent the amount of VFs to open from each port.

For example: max_vfs = 1,1,2,2, will open a single VF per port on the first NIC and 2 VFs per port on second NIC. The order of the NICs is determined by pci SBDF number.

Note: VFs creation based on the system resources limitations.

• 0 - disabled (Default)

N number of VF to allocate over each port

Note: The amount of values provided in the max_vfs array should not exceed the supported_num_ports module parameter value.

mst_recovery

Enables recovery mode (only NMST module is loaded).

• 1 - enabled

• 0 - disabled (Default)

pfcrx

Priority based Flow Control policy on RX.

• 0-255

• 0 - default

It is an 8 bits bit mask, where each bit indicates a priority [0-7].

Bit values:

• 1 - respect incoming PFC pause frames for the specified priority.

• 0 - ignore incoming pause frames on the specified priority.

Note: The pfcrx and pfctx values must be identical.

pfctx

Priority based Flow Control policy on TX.

• 0-255

• 0 - default

It is an 8 bits bit mask, where each bit indicates a priority [0-7].

Bit values:

• 1 - generate pause frames according to the RX buffer threshold on the specified priority.

• 0 - never generate pause frames on the specified priority.

Note: The pfcrx and pfctx values must be identical.

rss

Number of hardware queues for NetQ RSS.

Note: This parameter replaces the previously used “rss” parameter which is now obsolete.

• 2-8

• 0 - disabled

When this value is != 0, NetQ RSS is enabled with 1 RSS uplink queue that manages the 'rss' hardware queues.

Notes:

• The value must be a power of 2

• The maximum value must be lower than the number of CPU cores.

supported_num_ports

Sets the maximum supported ports.

1-8

Default 1

Note: Before installing new cards, you must modify the maximum number of the supported ports to include the additional new ports.

dropless_rq

Enable dropless RQ

When this feature is enabled, packets that are received while the software ring is full will not be immediately dropped.

The firmware will wait a certain period of time assuming the software will post new WQEs, otherwise the packets will be dropped.

• 1 - enabled

• 0 – disabled

• Default: 0