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mxge - Myricom Myri10GE 10 Gigabit Ethernet adapter driver
To compile this driver into the kernel, place the following lines in your
kernel configuration file:
Alternatively, to load the driver as a module at boot time, place the
following lines in loader.conf(5):
The mxge driver provides support for PCI Express 10 Gigabit Ethernet
adapters based on the Myricom LANai Z8E chip. The driver supports
Transmit/Receive checksum offload, Jumbo Frames as well as TCP
segmentation offload (TSO). For further hardware information, see
For questions related to hardware requirements, refer to the
documentation supplied with your Myri10GE adapter. All hardware
requirements listed apply to use with FreeBSD.
Support for Jumbo Frames is provided via the interface MTU setting.
Selecting an MTU larger than 1500 bytes with the ifconfig(8) utility
configures the adapter to receive and transmit Jumbo Frames. The maximum
MTU size for Jumbo Frames is 9000.
For more information on configuring this device, see ifconfig(8).
The mxge driver supports 10 Gigabit Ethernet adapters based on the
Myricom LANai Z8E chips:
· Myricom 10GBase-CX4 (10G-PCIE-8A-C, 10G-PCIE-8AL-C)
· Myricom 10GBase-R (10G-PCIE-8A-R, 10G-PCIE-8AL-R)
· Myricom 10G XAUI over ribbon fiber (10G-PCIE-8A-Q, 10G-PCIE-8AL-Q)
Tunables can be set at the loader(8) prompt before booting the kernel or
stored in loader.conf(5).
Whether or not hardware flow control is enabled on the adapter.
The default value is 1.
This value delays the generation of all interrupts in units of 1
microsecond. The default value is 30.
This value determines whether or not the driver may omit doing a
pio read in the interrupt handler which ensures that the
interrupt line has been deasserted when using xPIC interrupts. A
non-zero value may result in lower CPU overhead, however it may
also result in spurious interrupts. The default value is 0.
mxge%d: Unable to allocate bus resource: memory A fatal initialization
error has occurred.
mxge%d: Unable to allocate bus resource: interrupt A fatal
initialization error has occurred.
mxge%d: Could not find firmware image %s The appropriate firmware kld
module was not installed. This is a fatal initialization error.
For general information and support, go to the Myricom support website
If an issue is identified with the released source code on the supported
kernel with a supported adapter, email the specific information related
to the issue to 〈email@example.com〉.
altq(4), arp(4), netintro(4), ng_ether(4), ifconfig(8)
The mxge device driver first appeared in FreeBSD 6.3.
The mxge driver was written by Andrew Gallatin 〈gallatin@FreeBSD.org〉.