NAME¶
cxgb
—
Chelsio T3 10 Gigabit Ethernet adapter driver
SYNOPSIS¶
To compile this driver into the kernel, place the following lines in your kernel
configuration file:
device firmware
device cxgb
To load the driver as a module at boot time, place the following line in
loader.conf(5):
DESCRIPTION¶
The
cxgb
driver supports Transmit/Receive
checksum offload, Jumbo Frames, TCP segmentation offload (TSO), Large Receive
Offload (LRO), VLAN hardware insertion / extraction, and VLAN checksum
offload. For further hardware information, see
http://www.chelsio.com/.
For questions related to hardware requirements, refer to the documentation
supplied with your Chelsio T3 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).
HARDWARE¶
The
cxgb
driver supports 10 Gigabit and 1
Gigabit Ethernet adapters based on the T3 and T3B chipset:
- Chelsio 10GBase-CX4
- Chelsio 10GBase-LR
- Chelsio 10GBase-SR
LOADER TUNABLES¶
Tunables can be set at the
loader(8) prompt before
booting the kernel or stored in
loader.conf(5).
DIAGNOSTICS¶
- cxgb%d: Unable to allocate bus resource: memory
- A fatal initialization error has occurred.
- cxgb%d: Unable to allocate bus resource: interrupt
- A fatal initialization error has occurred.
- cxgb%d: Could not find firmware image %s
- The appropriate firmware kld module was not installed. This is a fatal
initialization error.
SUPPORT¶
For general information and support, go to the Chelsio support website at:
http://www.chelsio.com/.
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 ⟨support@chelsio.com⟩.
SEE ALSO¶
altq(4),
arp(4),
netintro(4),
ng_ether(4),
ifconfig(8)
HISTORY¶
The
cxgb
device driver first appeared in
FreeBSD 6.3 and
FreeBSD 7.0.
AUTHORS¶
The
cxgb
driver was written by
Kip Macy ⟨kmacy@FreeBSD.org⟩
with substantial support from
Scott Long
⟨scottl@FreeBSD.org⟩.