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ALE(4) | Device Drivers Manual | ALE(4) |
NAME¶
ale
—
Atheros AR8121/AR8113/AR8114 Gigabit/Fast Ethernet
driver
SYNOPSIS¶
To compile this driver into the kernel, place the following lines in your kernel configuration file:device miibus
device ale
if_ale_load="YES"
DESCRIPTION¶
Theale
device driver provides support for
Atheros AR8121 PCI Express Gigabit Ethernet controllers and Atheros
AR8113/AR8114 PCI Express Fast Ethernet controllers.
All LOMs supported by the ale
driver have
TCP/UDP/IP checksum offload for both receive and transmit, TCP segmentation
offload (TSO), hardware VLAN tag stripping/insertion features, Wake On Lan
(WOL) and an interrupt coalescing/moderation mechanism as well as a 64-bit
multicast hash filter.
The AR8121 also supports Jumbo Frames (up to 8132 bytes), which can be
configured 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 ale
driver supports the following media
types:
autoselect
- Enable autoselection of the media type and options. The user can manually override the autoselected mode by adding media options to rc.conf(5).
10baseT/UTP
- Set 10Mbps operation.
100baseTX
- Set 100Mbps (Fast Ethernet) operation.
1000baseTX
- Set 1000baseTX operation over twisted pair.
ale
driver supports the following media
options:
full-duplex
- Force full duplex operation.
half-duplex
- Force half duplex operation.
HARDWARE¶
Theale
device driver provides support for
the following Ethernet controllers:
- Atheros AR8113 PCI Express Fast Ethernet controller
- Atheros AR8114 PCI Express Fast Ethernet controller
- Atheros AR8121 PCI Express Gigabit Ethernet controller
LOADER TUNABLES¶
Tunables can be set at the loader(8) prompt before booting the kernel or stored in loader.conf(5).- hw.ale.msi_disable
- This tunable disables MSI support on the Ethernet hardware. The default value is 0.
- hw.ale.msix_disable
- This tunable disables MSI-X support on the Ethernet hardware. The default value is 0.
SYSCTL VARIABLES¶
The following variables are available as both sysctl(8) variables and loader(8) tunables:- dev.ale.%d.int_rx_mod
- Maximum amount of time to delay receive interrupt processing in units of 1us. The accepted range is 0 to 130000, the default is 30(30us). Value 0 completely disables the interrupt moderation.
- dev.ale.%d.int_tx_mod
- Maximum amount of time to delay transmit interrupt processing in units of 1us. The accepted range is 0 to 130000, the default is 1000(1ms). Value 0 completely disables the interrupt moderation.
- dev.ale.%d.process_limit
- Maximum amount of Rx frames to be processed in the event loop before rescheduling a taskqueue. The accepted range is 32 to 255, the default value is 128 events. The interface does not need to be brought down and up again before a change takes effect.
SEE ALSO¶
altq(4), arp(4), miibus(4), netintro(4), ng_ether(4), vlan(4), ifconfig(8)HISTORY¶
Theale
driver was written by
Pyun YongHyeon
⟨yongari@FreeBSD.org⟩. It first appeared in
FreeBSD 7.1.November 12, 2008 | Debian |