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IFMEDIA(4) Device Drivers Manual IFMEDIA(4)
NAME
ifmedia - network interface media settings
SYNOPSIS
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_media.h>
DESCRIPTION
The ifmedia interface provides a consistent method for querying and
setting network interface media and media options. The media is
typically set using the ifconfig(8) command.
The lists below provide the possible names of each link type, media type,
or option. The first name in the list is the canonical name. Additional
names are accepted aliases.
There are currently four link types supported by ifmedia:
IFM_ETHER Ethernet. [Ethernet, ether]
IFM_TOKEN Token Ring. [TokenRing, token]
IFM_FDDI FDDI. [FDDI]
IFM_IEEE80211 IEEE802.11 Wireless LAN. [IEEE802.11]
The following sections describe the possible media settings for each link
type. Not all of these are supported by every device; refer to your
device's manual page for more information.
Common Media Types and Options
The following media types (media) are shared by all link types:
IFM_AUTO Autoselect the best media. [autoselect, auto]
IFM_MANUAL Jumper or switch on device selects media. [manual]
IFM_NONE Deselect all media. [none]
The following media options (mediaopt) are shared by all link types:
IFM_FDX Place the device into full-duplex mode. This option
only has meaning if the device is normally not full-
duplex. [full-duplex, fdx]
IFM_HDX Place the device into half-duplex mode. This option
only has meaning if the device is normally not half-
duplex. [half-duplex, hdx]
IFM_FLOW Hardware flow control support. [flowcontrol, flow]
IFM_FLAG0 Driver-defined flag. [flag0]
IFM_FLAG1 Driver-defined flag. [flag1]
IFM_FLAG2 Driver-defined flag. [flag2]
IFM_LOOP Place the device into hardware loopback mode.
[loopback, hw-loopback, loop]
Media Types and Options for Ethernet
The following media types are defined for Ethernet:
IFM_HPNA_1 HomePNA 1.0, 1 Mb/s. [HomePNA1, HPNA1]
IFM_10_T 10BASE-T, 10 Mb/s over unshielded twisted pair, RJ45
connector. [10baseT, UTP, 10UTP]
IFM_10_2 10BASE2, 10 Mb/s over coaxial cable, BNC connector,
also called Thinnet. [10base2, BNC, 10BNC]
IFM_10_5 10BASE5, 10 Mb/s over 15-wire cables, DB15 connector,
also called AUI. [10base5, AUI, 10AUI]
IFM_10_STP 10BASE-STP, 10 Mb/s over shielded twisted pair, DB9
connector. [10baseSTP, STP, 10STP]
IFM_10_FL 10BASE-FL, 10 Mb/s over fiber optic cables.
[10baseFL, FL, 10FL]
IFM_100_TX 100BASE-TX, 100 Mb/s over unshielded twisted pair,
RJ45 connector. [100baseTX, 100TX]
IFM_100_FX 100BASE-FX, 100 Mb/s over fiber optic cables.
[100baseFX, 100FX]
IFM_100_T4 100BASE-T4, 100 Mb/s over 4-wire (category 3)
unshielded twisted pair, RJ45 connector. [100baseT4,
100T4]
IFM_100_T2 100BASE-T2. [100baseT2, 100T2]
IFM_100_VG 100VG-AnyLAN. [100baseVG, 100VG]
IFM_1000_SX 1000BASE-SX, 1 Gb/s over multi-mode fiber optic
cables. (short waves) [1000baseSX, 1000SX]
IFM_1000_LX 1000BASE-LX, 1 Gb/s over single-mode fiber or multi-
mode fiber optic cables. (long waves) [1000baseLX,
1000LX]
IFM_1000_BX10
1000BASE-BX10, 1 Gb/s over bidirectional fiber optic
cables. (long waves) [1000BASE-BX10]
IFM_1000_CX 1000BASE-CX, 1 Gb/s over shielded twisted pair.
(twinax) [1000baseCX, 1000CX]
IFM_1000_T 1000BASE-T, 1 Gb/s over category 5 unshielded twisted
pair, 802.3ab, RJ45 connector. [1000baseT, 1000T]
IFM_1000_KX 1000BASE-KX, 1 Gb/s backplane. [1000BASE-KX,
1000baseKX]
IFM_2500_SX 2500BASE-SX, 2.5 Gb/s over multi-mode fiber optic
cables. [2500baseSX, 2500SX]
IFM_2500_T 2.5GBASE-T, 2.5 Gb/s over category 5e. [2.5GBASE-T,
2500baseT]
IFM_2500_KX 2500BASE-KX, 2.5 Gb/s backplane. [2500BASE-KX,
2500baseKX]
IFM_5000_T 5GBASE-T, 5 Gb/s over category 6. [5GBASE-T,
5GbaseT]
IFM_10G_CX4 10GBASE-CX4, 10 Gb/s over XAUI 4-lane PCS and copper
cables. [10GbaseCX4, 10GCX4, 10GBASE-CX4]
IFM_10G_LR 10GBASE-LR, 10 Gb/s over single-mode fiber optic
cables. [10GbaseLR, 10GLR]
IFM_10G_LRM 10GBASE-LR, 10 Gb/s over single-mode fiber optic
cables. [10GbaseLRM]
IFM_10G_SR 10GBASE-SR, 10 Gb/s over multi-mode fiber optic
cables. [10GbaseSR, 10GSR, 10GBASE-SR]
IFM_10G_T 10GBASE-T, 10 Gb/s over unshielded twisted pair, RJ45
connector. [10Gbase-T]
IFM_10G_TWINAX
SFP+ direct attach, 10 Gb/s over twinaxial cable.
[10Gbase-Twinax]
The following media options are defined for Ethernet:
IFM_ETH_MASTER
Configure a 1000BASE-T PHY as the clock master for a
1000BASE-T link. This option has no effect (shows
current status only) if the media is IFM_AUTO.
[master]
IFM_ETH_TXPAUSE
Configure the device to send PAUSE (flow control)
frames. This option has no effect (shows current
status only) if the media is IFM_AUTO. [txpause]
IFM_ETH_RXPAUSE
Configure the device to receive PAUSE (flow control)
frames. This option has no effect (shows current
status only) if the media is IFM_AUTO. [rxpause]
Media Types and Options for Token Ring
The following media types are defined for Token Ring:
IFM_TOK_STP4 4 Mb/s, shielded twisted pair, DB9 connector.
[DB9/4Mbit, 4STP]
IFM_TOK_STP16
16 Mb/s, shielded twisted pair, DB9 connector.
[DB9/16Mbit, 16STP]
IFM_TOK_UTP4 4 Mb/s, unshielded twisted pair, RJ45 connector.
[UTP/4Mbit, 4UTP]
IFM_TOK_UTP16
16 Mb/s, unshielded twisted pair, RJ45 connector.
[UTP/16Mbit, 16UTP]
The following media options are defined for Token Ring:
IFM_TOK_ETR Early token release. [EarlyTokenRelease, ETR]
IFM_TOK_SRCRT
Enable source routing features. [SourceRouting,
SRCRT]
IFM_TOK_ALLR All routes vs. single route broadcast. [AllRoutes,
ALLR]
Media Types and Options for FDDI
The following media types are defined for FDDI:
IFM_FDDI_SMF Single-mode fiber. [Single-mode, SMF]
IFM_FDDI_MMF Multi-mode fiber. [Multi-mode, MMF]
IFM_FDDI_UTP Unshielded twisted pair, RJ45 connector. [UTP, CDDI]
The following media options are defined for FDDI:
IFM_FDDI_DA Dual-attached station vs. Single-attached station.
[dual-attach, das]
Media Types and Options for IEEE802.11 Wireless LAN
The following media types are defined for IEEE802.11 Wireless LAN:
IFM_IEEE80211_FH1
Frequency Hopping 1 Mbps. [FH1]
IFM_IEEE80211_FH2
Frequency Hopping 2 Mbps. [FH2]
IFM_IEEE80211_DS1
Direct Sequence 1 Mbps. [DS1]
IFM_IEEE80211_DS2
Direct Sequence 2 Mbps. [DS2]
IFM_IEEE80211_DS5
Direct Sequence 5 Mbps. [DS5]
IFM_IEEE80211_DS11
Direct Sequence 11 Mbps. [DS11]
IFM_IEEE80211_DS22
Direct Sequence 22 Mbps. [DS22]
IFM_IEEE80211_OFDM6
Orthogonal Frequency Division Multiplexing 6 Mbps.
[OFDM6]
IFM_IEEE80211_OFDM9
Orthogonal Frequency Division Multiplexing 9 Mbps.
[OFDM9]
IFM_IEEE80211_OFDM12
Orthogonal Frequency Division Multiplexing 12 Mbps.
[OFDM12]
IFM_IEEE80211_OFDM18
Orthogonal Frequency Division Multiplexing 18 Mbps.
[OFDM18]
IFM_IEEE80211_OFDM24
Orthogonal Frequency Division Multiplexing 24 Mbps.
[OFDM24]
IFM_IEEE80211_OFDM36
Orthogonal Frequency Division Multiplexing 36 Mbps.
[OFDM36]
IFM_IEEE80211_OFDM48
Orthogonal Frequency Division Multiplexing 48 Mbps.
[OFDM48]
IFM_IEEE80211_OFDM54
Orthogonal Frequency Division Multiplexing 54 Mbps.
[OFDM54]
IFM_IEEE80211_OFDM72
Orthogonal Frequency Division Multiplexing 72 Mbps.
[OFDM72]
The following media options are defined for IEEE802.11 Wireless LAN:
IFM_IEEE80211_ADHOC
Ad-hoc (IBSS) mode. [adhoc, ibss]
In some drivers, it may be used with the IFM_FLAG0
[flag0] media option to specify non-standard ad-hoc
demo mode.
IFM_IEEE80211_HOSTAP
Access Point mode. [hostap]
IFM_IEEE80211_MONITOR
Monitor mode. [monitor]
IFM_IEEE80211_TURBO
Turbo mode. [turbo]
SEE ALSO
netintro(4), ifconfig(8)
HISTORY
The ifmedia interface first appeared in BSD/OS 3.0. The implementation
that appeared in NetBSD 1.3 was written by Jonathan Stone and Jason R.
Thorpe to be compatible with the BSDI API. It has since gone through
several revisions which have extended the API while maintaining backwards
compatibility with the original API.
Support for the IEEE802.11 Wireless LAN link type was added in
NetBSD 1.5.
NetBSD 11.99 August 3, 2018 NetBSD 11.99