ALC(4) BSD Kernel Interfaces Manual ALC(4)NAME
alc -- Atheros AR813x/AR815x Ethernet device
SYNOPSIS
alc* at pci?
atphy* at mii?
DESCRIPTION
The alc driver provides support for Ethernet interfaces based on the Atheros AR8131/AR8132/AR8151/AR8152 Ethernet chipsets.
The following media types are supported:
autoselect Enable autoselection of the media type and options.
10baseT Set 10Mbps operation.
100baseTX Set 100Mbps (Fast Ethernet) operation.
1000baseT Set 1000Mbps (Gigabit Ethernet) operation (AR8131/AR8151 only).
For more information on configuring this device, see ifconfig(8).
SEE ALSO arp(4), atphy(4), ifmedia(4), intro(4), netintro(4), pci(4), ifconfig(8)HISTORY
The alc device driver first appeared in NetBSD 6.0.
BSD February 22, 2011 BSD
Check Out this Related Man Page
ALC(4) BSD Kernel Interfaces Manual ALC(4)NAME
alc -- Atheros AR813x/AR815x/AR816x/AR817x Gigabit/Fast Ethernet driver
SYNOPSIS
To compile this driver into the kernel, place the following lines in your kernel configuration file:
device miibus
device alc
Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):
if_alc_load="YES"
DESCRIPTION
The alc device driver provides support for Atheros AR813x, AR815x, AR816x and AR817x PCI Express Gigabit/Fast Ethernet controllers.
All LOMs supported by the alc driver have TCP/UDP/IP checksum offload for transmit, TCP segmentation offload (TSO), hardware VLAN tag strip-
ping/insertion features, Wake On Lan (WOL) and an interrupt moderation mechanism as well as a 64-bit multicast hash filter.
The AR813x, AR815x, AR816x and AR817x supports Jumbo Frames (up to 9216, 6144, 9216 and 9216 bytes, respectively), 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 alc 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.
The alc driver supports the following media options:
full-duplex Force full duplex operation.
half-duplex Force half duplex operation.
For more information on configuring this device, see ifconfig(8).
HARDWARE
The alc device driver provides support for the following Ethernet controllers:
o Atheros AR8131 PCI Express Gigabit Ethernet controller
o Atheros AR8132 PCI Express Fast Ethernet controller
o Atheros AR8151 v1.0 PCI Express Gigabit Ethernet controller
o Atheros AR8151 v2.0 PCI Express Gigabit Ethernet controller
o Atheros AR8152 v1.1 PCI Express Fast Ethernet controller
o Atheros AR8152 v2.0 PCI Express Fast Ethernet controller
o Atheros AR8161 PCI Express Gigabit Ethernet controller
o Atheros AR8162 PCI Express Fast Ethernet controller
o Atheros AR8171 PCI Express Gigabit Ethernet controller
o Atheros AR8172 PCI Express Fast Ethernet controller
o Killer E2200 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.alc.msi_disable
This tunable disables MSI support on the Ethernet hardware. The default value is 0.
hw.alc.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.alc.%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
100(100us). Value 0 completely disables the interrupt moderation.
dev.alc.%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.alc.%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 64 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
The alc driver was written by Pyun YongHyeon <yongari@FreeBSD.org>. It first appeared in FreeBSD 8.0.
BSD October 8, 2014 BSD