History log of /openbsd-current/share/man/man4/ifmedia.4
Revision (<<< Hide revision tags) (Show revision tags >>>) Date Author Comments
# 1.30 15-Aug-2023 jsg

spacial -> spatial
ok stsp@


Revision tags: OPENBSD_7_1_BASE OPENBSD_7_2_BASE OPENBSD_7_3_BASE
# 1.29 31-Mar-2022 naddy

man pages: add missing commas between subordinate and main clauses

jmc@ dislikes a comma before "then" in a conditional, so leave those
untouched.

ok jmc@


Revision tags: OPENBSD_6_9_BASE OPENBSD_7_0_BASE
# 1.28 21-Jan-2021 kevlo

Document IFM_2500_T media type.

ok claudio@ jmc@ sthen@


Revision tags: OPENBSD_6_8_BASE
# 1.27 16-May-2020 jmc

various tweaks for the 80211 parts; includes some typo fixes
spotted by stsp while reviewing the diff;

ok stsp


Revision tags: OPENBSD_6_7_BASE
# 1.26 30-Apr-2020 stsp

Fix description of "coding rate" in new ifmedia(4) 802.11 section.


# 1.25 30-Apr-2020 stsp

Expand the 802.11 section in the ifmedia(4) man page.

It has become increasingly difficult to make sense of wireless man pages
without resorting to Wikipedia for help. My goal is to provide background
information about technical terms used across wireless man pages, such as
"MIMO" and "MCS". jmc@ suggested that ifmedia(4) would be a suitable place.

This new ifmedia(4) section provides context and equips curious readers
with additional technical terms to research if they wish.

Information about how 802.11 transmission rates work (roughly) and how they
evolved with each standard revision we support has been added.

Obsolete information about 2GHz restrictions in France has been removed.

Information about 5GHz channels has been added.

High-level information (11a/b/g/n/ac mode, hostap/ibss/monitor mode,
information about channels) is discussed before going into detailed
discussion about 802.11 data rates.

ok jmc@ schwarze@


Revision tags: OPENBSD_6_3_BASE OPENBSD_6_4_BASE OPENBSD_6_5_BASE OPENBSD_6_6_BASE
# 1.24 04-Feb-2018 stsp

Document 802.11ac media types and fix docs for the 11n ones while here.
suggested by and ok jmc@


# 1.23 05-Jan-2018 jmc

some 11n bits; help/ok stsp


Revision tags: OPENBSD_5_9_BASE OPENBSD_6_0_BASE OPENBSD_6_1_BASE OPENBSD_6_2_BASE
# 1.22 12-Jan-2016 stsp

Remove wireless turbo mode support. It is a non-standard extension
which only worked with ath(4) devices from a decade ago.
Diff tested on ath(4) hardware by me to verify that 11a/b modes still work.
ok reyk deraadt chris sthen kettenis


# 1.21 10-Sep-2015 schwarze

use .In rather than .Fd #include


Revision tags: OPENBSD_5_1_BASE OPENBSD_5_2_BASE OPENBSD_5_3_BASE OPENBSD_5_4_BASE OPENBSD_5_5_BASE OPENBSD_5_6_BASE OPENBSD_5_7_BASE OPENBSD_5_8_BASE
# 1.20 03-Sep-2011 jmc

make -column lists pretty again;

specifically, rewrite them to permit some markup in the column headers,
and use "Ta" instead of literal tabs; mandoc does not currently match groff
100%, but a mandoc fix may be some time off, and we've gone enough releases
with poorly formatting column lists.

in some cases i have rewritten the lists as -tag, where -column made
little sense.


Revision tags: OPENBSD_4_7_BASE OPENBSD_4_8_BASE OPENBSD_4_9_BASE OPENBSD_5_0_BASE
# 1.19 09-Feb-2010 claudio

Try to bring documentation up to the same state as the code. Document
many more medias, types and options. Input and OK sthen@ and jmc@


# 1.18 03-Jan-2010 schwarze

.Bl always requires .It, even in .Bl -column;
syntax errors found by mandoc(1), also required to fix the mandoc build;
feedback and ok jmc@ and sobrado@


Revision tags: OPENBSD_4_4_BASE OPENBSD_4_5_BASE OPENBSD_4_6_BASE
# 1.17 26-Jun-2008 ray

First pass at removing clauses 3 and 4 from NetBSD licenses.

Not sure what's more surprising: how long it took for NetBSD to
catch up to the rest of the BSDs (including UCB), or the amount of
code that NetBSD has claimed for itself without attributing to the
actual authors.

OK deraadt@


Revision tags: OPENBSD_4_2_BASE OPENBSD_4_3_BASE
# 1.16 31-May-2007 jmc

convert to new .Dd format;


# 1.15 29-May-2007 jmc

zap token ring bits; ok claudio


# 1.14 12-Apr-2007 jmc

add in channel frequency info from old wicontrol(8) page;
diff from Thoren McDole, cleaned up by myself;


Revision tags: OPENBSD_3_7_BASE OPENBSD_3_8_BASE OPENBSD_3_9_BASE OPENBSD_4_0_BASE OPENBSD_4_1_BASE
# 1.13 02-Mar-2005 jmc

update IEEE80211 media types and options;
ok jsg@


# 1.12 01-Mar-2005 jmc

a little spacing; some list adjustment;


Revision tags: OPENBSD_3_4_BASE OPENBSD_3_5_BASE OPENBSD_3_6_BASE
# 1.11 06-Jun-2003 jmc

- section reorder
- some macro fixes
- kill whitespace at EOL


Revision tags: OPENBSD_3_3_BASE
# 1.10 13-Jan-2003 kjell

Start sentence on new line. ok mpech@. "whatever" theo@


Revision tags: OPENBSD_3_1_BASE OPENBSD_3_2_BASE
# 1.9 05-Apr-2002 mickey

add 802.11 media configuration


# 1.8 13-Nov-2001 mpech

o) Fix bogus .Xr usage;
o) CAVEAT -> CAVEATS;
o) AUTHOR -> AUTHORS;
o) Start new sentence on a new line;
o) For URL and path names use .Pa;
o) We don't like .Pp before .Rs;
o) Don't use .Pp before/after .Sh;
o) OpenBSD -> .Ox;

millert@ ok and help;


Revision tags: OPENBSD_3_0_BASE
# 1.7 05-Oct-2001 mpech

Powered by @mantoya:
o) start new sentence on a new line;
o) minor mdoc fixes;
millert@ ok

Tip of the day: www.mpechismazohist.com


Revision tags: OPENBSD_2_9_BASE
# 1.6 01-Mar-2001 aaron

A slew of share/ man page fixes; nordin@cse.ogi.edu. These have been sitting
in my INBOX since Nov 6, 2000, probably forgot about them since the tree was
frozen at that time.


Revision tags: OPENBSD_2_6_BASE OPENBSD_2_7_BASE OPENBSD_2_8_BASE
# 1.5 23-Sep-1999 alex

Typo fixes.


# 1.4 07-Jul-1999 aaron

use Dv


# 1.3 05-Jun-1999 aaron

more .Os cleanup, remove some trailing whitespace, cleanse some .Nm


# 1.2 16-May-1999 alex

Cleanup xrefs under SEE ALSO. Specifically:

- Sort xrefs by section, and then alphabetically.
- Add missing commas between xref items.
- Remove commas from the last xref entry.
- Remove duplicate entries.


Revision tags: OPENBSD_2_4_BASE OPENBSD_2_5_BASE
# 1.1 03-Sep-1998 jason

Documentation for ifmedia & updated ifconfig usage


# 1.29 31-Mar-2022 naddy

man pages: add missing commas between subordinate and main clauses

jmc@ dislikes a comma before "then" in a conditional, so leave those
untouched.

ok jmc@


Revision tags: OPENBSD_6_9_BASE OPENBSD_7_0_BASE
# 1.28 21-Jan-2021 kevlo

Document IFM_2500_T media type.

ok claudio@ jmc@ sthen@


Revision tags: OPENBSD_6_8_BASE
# 1.27 16-May-2020 jmc

various tweaks for the 80211 parts; includes some typo fixes
spotted by stsp while reviewing the diff;

ok stsp


Revision tags: OPENBSD_6_7_BASE
# 1.26 30-Apr-2020 stsp

Fix description of "coding rate" in new ifmedia(4) 802.11 section.


# 1.25 30-Apr-2020 stsp

Expand the 802.11 section in the ifmedia(4) man page.

It has become increasingly difficult to make sense of wireless man pages
without resorting to Wikipedia for help. My goal is to provide background
information about technical terms used across wireless man pages, such as
"MIMO" and "MCS". jmc@ suggested that ifmedia(4) would be a suitable place.

This new ifmedia(4) section provides context and equips curious readers
with additional technical terms to research if they wish.

Information about how 802.11 transmission rates work (roughly) and how they
evolved with each standard revision we support has been added.

Obsolete information about 2GHz restrictions in France has been removed.

Information about 5GHz channels has been added.

High-level information (11a/b/g/n/ac mode, hostap/ibss/monitor mode,
information about channels) is discussed before going into detailed
discussion about 802.11 data rates.

ok jmc@ schwarze@


Revision tags: OPENBSD_6_3_BASE OPENBSD_6_4_BASE OPENBSD_6_5_BASE OPENBSD_6_6_BASE
# 1.24 04-Feb-2018 stsp

Document 802.11ac media types and fix docs for the 11n ones while here.
suggested by and ok jmc@


# 1.23 05-Jan-2018 jmc

some 11n bits; help/ok stsp


Revision tags: OPENBSD_5_9_BASE OPENBSD_6_0_BASE OPENBSD_6_1_BASE OPENBSD_6_2_BASE
# 1.22 12-Jan-2016 stsp

Remove wireless turbo mode support. It is a non-standard extension
which only worked with ath(4) devices from a decade ago.
Diff tested on ath(4) hardware by me to verify that 11a/b modes still work.
ok reyk deraadt chris sthen kettenis


# 1.21 10-Sep-2015 schwarze

use .In rather than .Fd #include


Revision tags: OPENBSD_5_1_BASE OPENBSD_5_2_BASE OPENBSD_5_3_BASE OPENBSD_5_4_BASE OPENBSD_5_5_BASE OPENBSD_5_6_BASE OPENBSD_5_7_BASE OPENBSD_5_8_BASE
# 1.20 03-Sep-2011 jmc

make -column lists pretty again;

specifically, rewrite them to permit some markup in the column headers,
and use "Ta" instead of literal tabs; mandoc does not currently match groff
100%, but a mandoc fix may be some time off, and we've gone enough releases
with poorly formatting column lists.

in some cases i have rewritten the lists as -tag, where -column made
little sense.


Revision tags: OPENBSD_4_7_BASE OPENBSD_4_8_BASE OPENBSD_4_9_BASE OPENBSD_5_0_BASE
# 1.19 09-Feb-2010 claudio

Try to bring documentation up to the same state as the code. Document
many more medias, types and options. Input and OK sthen@ and jmc@


# 1.18 03-Jan-2010 schwarze

.Bl always requires .It, even in .Bl -column;
syntax errors found by mandoc(1), also required to fix the mandoc build;
feedback and ok jmc@ and sobrado@


Revision tags: OPENBSD_4_4_BASE OPENBSD_4_5_BASE OPENBSD_4_6_BASE
# 1.17 26-Jun-2008 ray

First pass at removing clauses 3 and 4 from NetBSD licenses.

Not sure what's more surprising: how long it took for NetBSD to
catch up to the rest of the BSDs (including UCB), or the amount of
code that NetBSD has claimed for itself without attributing to the
actual authors.

OK deraadt@


Revision tags: OPENBSD_4_2_BASE OPENBSD_4_3_BASE
# 1.16 31-May-2007 jmc

convert to new .Dd format;


# 1.15 29-May-2007 jmc

zap token ring bits; ok claudio


# 1.14 12-Apr-2007 jmc

add in channel frequency info from old wicontrol(8) page;
diff from Thoren McDole, cleaned up by myself;


Revision tags: OPENBSD_3_7_BASE OPENBSD_3_8_BASE OPENBSD_3_9_BASE OPENBSD_4_0_BASE OPENBSD_4_1_BASE
# 1.13 02-Mar-2005 jmc

update IEEE80211 media types and options;
ok jsg@


# 1.12 01-Mar-2005 jmc

a little spacing; some list adjustment;


Revision tags: OPENBSD_3_4_BASE OPENBSD_3_5_BASE OPENBSD_3_6_BASE
# 1.11 06-Jun-2003 jmc

- section reorder
- some macro fixes
- kill whitespace at EOL


Revision tags: OPENBSD_3_3_BASE
# 1.10 13-Jan-2003 kjell

Start sentence on new line. ok mpech@. "whatever" theo@


Revision tags: OPENBSD_3_1_BASE OPENBSD_3_2_BASE
# 1.9 05-Apr-2002 mickey

add 802.11 media configuration


# 1.8 13-Nov-2001 mpech

o) Fix bogus .Xr usage;
o) CAVEAT -> CAVEATS;
o) AUTHOR -> AUTHORS;
o) Start new sentence on a new line;
o) For URL and path names use .Pa;
o) We don't like .Pp before .Rs;
o) Don't use .Pp before/after .Sh;
o) OpenBSD -> .Ox;

millert@ ok and help;


Revision tags: OPENBSD_3_0_BASE
# 1.7 05-Oct-2001 mpech

Powered by @mantoya:
o) start new sentence on a new line;
o) minor mdoc fixes;
millert@ ok

Tip of the day: www.mpechismazohist.com


Revision tags: OPENBSD_2_9_BASE
# 1.6 01-Mar-2001 aaron

A slew of share/ man page fixes; nordin@cse.ogi.edu. These have been sitting
in my INBOX since Nov 6, 2000, probably forgot about them since the tree was
frozen at that time.


Revision tags: OPENBSD_2_6_BASE OPENBSD_2_7_BASE OPENBSD_2_8_BASE
# 1.5 23-Sep-1999 alex

Typo fixes.


# 1.4 07-Jul-1999 aaron

use Dv


# 1.3 05-Jun-1999 aaron

more .Os cleanup, remove some trailing whitespace, cleanse some .Nm


# 1.2 16-May-1999 alex

Cleanup xrefs under SEE ALSO. Specifically:

- Sort xrefs by section, and then alphabetically.
- Add missing commas between xref items.
- Remove commas from the last xref entry.
- Remove duplicate entries.


Revision tags: OPENBSD_2_4_BASE OPENBSD_2_5_BASE
# 1.1 03-Sep-1998 jason

Documentation for ifmedia & updated ifconfig usage


# 1.28 21-Jan-2021 kevlo

Document IFM_2500_T media type.

ok claudio@ jmc@ sthen@


Revision tags: OPENBSD_6_8_BASE
# 1.27 16-May-2020 jmc

various tweaks for the 80211 parts; includes some typo fixes
spotted by stsp while reviewing the diff;

ok stsp


Revision tags: OPENBSD_6_7_BASE
# 1.26 30-Apr-2020 stsp

Fix description of "coding rate" in new ifmedia(4) 802.11 section.


# 1.25 30-Apr-2020 stsp

Expand the 802.11 section in the ifmedia(4) man page.

It has become increasingly difficult to make sense of wireless man pages
without resorting to Wikipedia for help. My goal is to provide background
information about technical terms used across wireless man pages, such as
"MIMO" and "MCS". jmc@ suggested that ifmedia(4) would be a suitable place.

This new ifmedia(4) section provides context and equips curious readers
with additional technical terms to research if they wish.

Information about how 802.11 transmission rates work (roughly) and how they
evolved with each standard revision we support has been added.

Obsolete information about 2GHz restrictions in France has been removed.

Information about 5GHz channels has been added.

High-level information (11a/b/g/n/ac mode, hostap/ibss/monitor mode,
information about channels) is discussed before going into detailed
discussion about 802.11 data rates.

ok jmc@ schwarze@


Revision tags: OPENBSD_6_3_BASE OPENBSD_6_4_BASE OPENBSD_6_5_BASE OPENBSD_6_6_BASE
# 1.24 04-Feb-2018 stsp

Document 802.11ac media types and fix docs for the 11n ones while here.
suggested by and ok jmc@


# 1.23 05-Jan-2018 jmc

some 11n bits; help/ok stsp


Revision tags: OPENBSD_5_9_BASE OPENBSD_6_0_BASE OPENBSD_6_1_BASE OPENBSD_6_2_BASE
# 1.22 12-Jan-2016 stsp

Remove wireless turbo mode support. It is a non-standard extension
which only worked with ath(4) devices from a decade ago.
Diff tested on ath(4) hardware by me to verify that 11a/b modes still work.
ok reyk deraadt chris sthen kettenis


# 1.21 10-Sep-2015 schwarze

use .In rather than .Fd #include


Revision tags: OPENBSD_5_1_BASE OPENBSD_5_2_BASE OPENBSD_5_3_BASE OPENBSD_5_4_BASE OPENBSD_5_5_BASE OPENBSD_5_6_BASE OPENBSD_5_7_BASE OPENBSD_5_8_BASE
# 1.20 03-Sep-2011 jmc

make -column lists pretty again;

specifically, rewrite them to permit some markup in the column headers,
and use "Ta" instead of literal tabs; mandoc does not currently match groff
100%, but a mandoc fix may be some time off, and we've gone enough releases
with poorly formatting column lists.

in some cases i have rewritten the lists as -tag, where -column made
little sense.


Revision tags: OPENBSD_4_7_BASE OPENBSD_4_8_BASE OPENBSD_4_9_BASE OPENBSD_5_0_BASE
# 1.19 09-Feb-2010 claudio

Try to bring documentation up to the same state as the code. Document
many more medias, types and options. Input and OK sthen@ and jmc@


# 1.18 03-Jan-2010 schwarze

.Bl always requires .It, even in .Bl -column;
syntax errors found by mandoc(1), also required to fix the mandoc build;
feedback and ok jmc@ and sobrado@


Revision tags: OPENBSD_4_4_BASE OPENBSD_4_5_BASE OPENBSD_4_6_BASE
# 1.17 26-Jun-2008 ray

First pass at removing clauses 3 and 4 from NetBSD licenses.

Not sure what's more surprising: how long it took for NetBSD to
catch up to the rest of the BSDs (including UCB), or the amount of
code that NetBSD has claimed for itself without attributing to the
actual authors.

OK deraadt@


Revision tags: OPENBSD_4_2_BASE OPENBSD_4_3_BASE
# 1.16 31-May-2007 jmc

convert to new .Dd format;


# 1.15 29-May-2007 jmc

zap token ring bits; ok claudio


# 1.14 12-Apr-2007 jmc

add in channel frequency info from old wicontrol(8) page;
diff from Thoren McDole, cleaned up by myself;


Revision tags: OPENBSD_3_7_BASE OPENBSD_3_8_BASE OPENBSD_3_9_BASE OPENBSD_4_0_BASE OPENBSD_4_1_BASE
# 1.13 02-Mar-2005 jmc

update IEEE80211 media types and options;
ok jsg@


# 1.12 01-Mar-2005 jmc

a little spacing; some list adjustment;


Revision tags: OPENBSD_3_4_BASE OPENBSD_3_5_BASE OPENBSD_3_6_BASE
# 1.11 06-Jun-2003 jmc

- section reorder
- some macro fixes
- kill whitespace at EOL


Revision tags: OPENBSD_3_3_BASE
# 1.10 13-Jan-2003 kjell

Start sentence on new line. ok mpech@. "whatever" theo@


Revision tags: OPENBSD_3_1_BASE OPENBSD_3_2_BASE
# 1.9 05-Apr-2002 mickey

add 802.11 media configuration


# 1.8 13-Nov-2001 mpech

o) Fix bogus .Xr usage;
o) CAVEAT -> CAVEATS;
o) AUTHOR -> AUTHORS;
o) Start new sentence on a new line;
o) For URL and path names use .Pa;
o) We don't like .Pp before .Rs;
o) Don't use .Pp before/after .Sh;
o) OpenBSD -> .Ox;

millert@ ok and help;


Revision tags: OPENBSD_3_0_BASE
# 1.7 05-Oct-2001 mpech

Powered by @mantoya:
o) start new sentence on a new line;
o) minor mdoc fixes;
millert@ ok

Tip of the day: www.mpechismazohist.com


Revision tags: OPENBSD_2_9_BASE
# 1.6 01-Mar-2001 aaron

A slew of share/ man page fixes; nordin@cse.ogi.edu. These have been sitting
in my INBOX since Nov 6, 2000, probably forgot about them since the tree was
frozen at that time.


Revision tags: OPENBSD_2_6_BASE OPENBSD_2_7_BASE OPENBSD_2_8_BASE
# 1.5 23-Sep-1999 alex

Typo fixes.


# 1.4 07-Jul-1999 aaron

use Dv


# 1.3 05-Jun-1999 aaron

more .Os cleanup, remove some trailing whitespace, cleanse some .Nm


# 1.2 16-May-1999 alex

Cleanup xrefs under SEE ALSO. Specifically:

- Sort xrefs by section, and then alphabetically.
- Add missing commas between xref items.
- Remove commas from the last xref entry.
- Remove duplicate entries.


Revision tags: OPENBSD_2_4_BASE OPENBSD_2_5_BASE
# 1.1 03-Sep-1998 jason

Documentation for ifmedia & updated ifconfig usage


# 1.27 16-May-2020 jmc

various tweaks for the 80211 parts; includes some typo fixes
spotted by stsp while reviewing the diff;

ok stsp


Revision tags: OPENBSD_6_7_BASE
# 1.26 30-Apr-2020 stsp

Fix description of "coding rate" in new ifmedia(4) 802.11 section.


# 1.25 30-Apr-2020 stsp

Expand the 802.11 section in the ifmedia(4) man page.

It has become increasingly difficult to make sense of wireless man pages
without resorting to Wikipedia for help. My goal is to provide background
information about technical terms used across wireless man pages, such as
"MIMO" and "MCS". jmc@ suggested that ifmedia(4) would be a suitable place.

This new ifmedia(4) section provides context and equips curious readers
with additional technical terms to research if they wish.

Information about how 802.11 transmission rates work (roughly) and how they
evolved with each standard revision we support has been added.

Obsolete information about 2GHz restrictions in France has been removed.

Information about 5GHz channels has been added.

High-level information (11a/b/g/n/ac mode, hostap/ibss/monitor mode,
information about channels) is discussed before going into detailed
discussion about 802.11 data rates.

ok jmc@ schwarze@


Revision tags: OPENBSD_6_3_BASE OPENBSD_6_4_BASE OPENBSD_6_5_BASE OPENBSD_6_6_BASE
# 1.24 04-Feb-2018 stsp

Document 802.11ac media types and fix docs for the 11n ones while here.
suggested by and ok jmc@


# 1.23 05-Jan-2018 jmc

some 11n bits; help/ok stsp


Revision tags: OPENBSD_5_9_BASE OPENBSD_6_0_BASE OPENBSD_6_1_BASE OPENBSD_6_2_BASE
# 1.22 12-Jan-2016 stsp

Remove wireless turbo mode support. It is a non-standard extension
which only worked with ath(4) devices from a decade ago.
Diff tested on ath(4) hardware by me to verify that 11a/b modes still work.
ok reyk deraadt chris sthen kettenis


# 1.21 10-Sep-2015 schwarze

use .In rather than .Fd #include


Revision tags: OPENBSD_5_1_BASE OPENBSD_5_2_BASE OPENBSD_5_3_BASE OPENBSD_5_4_BASE OPENBSD_5_5_BASE OPENBSD_5_6_BASE OPENBSD_5_7_BASE OPENBSD_5_8_BASE
# 1.20 03-Sep-2011 jmc

make -column lists pretty again;

specifically, rewrite them to permit some markup in the column headers,
and use "Ta" instead of literal tabs; mandoc does not currently match groff
100%, but a mandoc fix may be some time off, and we've gone enough releases
with poorly formatting column lists.

in some cases i have rewritten the lists as -tag, where -column made
little sense.


Revision tags: OPENBSD_4_7_BASE OPENBSD_4_8_BASE OPENBSD_4_9_BASE OPENBSD_5_0_BASE
# 1.19 09-Feb-2010 claudio

Try to bring documentation up to the same state as the code. Document
many more medias, types and options. Input and OK sthen@ and jmc@


# 1.18 03-Jan-2010 schwarze

.Bl always requires .It, even in .Bl -column;
syntax errors found by mandoc(1), also required to fix the mandoc build;
feedback and ok jmc@ and sobrado@


Revision tags: OPENBSD_4_4_BASE OPENBSD_4_5_BASE OPENBSD_4_6_BASE
# 1.17 26-Jun-2008 ray

First pass at removing clauses 3 and 4 from NetBSD licenses.

Not sure what's more surprising: how long it took for NetBSD to
catch up to the rest of the BSDs (including UCB), or the amount of
code that NetBSD has claimed for itself without attributing to the
actual authors.

OK deraadt@


Revision tags: OPENBSD_4_2_BASE OPENBSD_4_3_BASE
# 1.16 31-May-2007 jmc

convert to new .Dd format;


# 1.15 29-May-2007 jmc

zap token ring bits; ok claudio


# 1.14 12-Apr-2007 jmc

add in channel frequency info from old wicontrol(8) page;
diff from Thoren McDole, cleaned up by myself;


Revision tags: OPENBSD_3_7_BASE OPENBSD_3_8_BASE OPENBSD_3_9_BASE OPENBSD_4_0_BASE OPENBSD_4_1_BASE
# 1.13 02-Mar-2005 jmc

update IEEE80211 media types and options;
ok jsg@


# 1.12 01-Mar-2005 jmc

a little spacing; some list adjustment;


Revision tags: OPENBSD_3_4_BASE OPENBSD_3_5_BASE OPENBSD_3_6_BASE
# 1.11 06-Jun-2003 jmc

- section reorder
- some macro fixes
- kill whitespace at EOL


Revision tags: OPENBSD_3_3_BASE
# 1.10 13-Jan-2003 kjell

Start sentence on new line. ok mpech@. "whatever" theo@


Revision tags: OPENBSD_3_1_BASE OPENBSD_3_2_BASE
# 1.9 05-Apr-2002 mickey

add 802.11 media configuration


# 1.8 13-Nov-2001 mpech

o) Fix bogus .Xr usage;
o) CAVEAT -> CAVEATS;
o) AUTHOR -> AUTHORS;
o) Start new sentence on a new line;
o) For URL and path names use .Pa;
o) We don't like .Pp before .Rs;
o) Don't use .Pp before/after .Sh;
o) OpenBSD -> .Ox;

millert@ ok and help;


Revision tags: OPENBSD_3_0_BASE
# 1.7 05-Oct-2001 mpech

Powered by @mantoya:
o) start new sentence on a new line;
o) minor mdoc fixes;
millert@ ok

Tip of the day: www.mpechismazohist.com


Revision tags: OPENBSD_2_9_BASE
# 1.6 01-Mar-2001 aaron

A slew of share/ man page fixes; nordin@cse.ogi.edu. These have been sitting
in my INBOX since Nov 6, 2000, probably forgot about them since the tree was
frozen at that time.


Revision tags: OPENBSD_2_6_BASE OPENBSD_2_7_BASE OPENBSD_2_8_BASE
# 1.5 23-Sep-1999 alex

Typo fixes.


# 1.4 07-Jul-1999 aaron

use Dv


# 1.3 05-Jun-1999 aaron

more .Os cleanup, remove some trailing whitespace, cleanse some .Nm


# 1.2 16-May-1999 alex

Cleanup xrefs under SEE ALSO. Specifically:

- Sort xrefs by section, and then alphabetically.
- Add missing commas between xref items.
- Remove commas from the last xref entry.
- Remove duplicate entries.


Revision tags: OPENBSD_2_4_BASE OPENBSD_2_5_BASE
# 1.1 03-Sep-1998 jason

Documentation for ifmedia & updated ifconfig usage


# 1.26 30-Apr-2020 stsp

Fix description of "coding rate" in new ifmedia(4) 802.11 section.


# 1.25 30-Apr-2020 stsp

Expand the 802.11 section in the ifmedia(4) man page.

It has become increasingly difficult to make sense of wireless man pages
without resorting to Wikipedia for help. My goal is to provide background
information about technical terms used across wireless man pages, such as
"MIMO" and "MCS". jmc@ suggested that ifmedia(4) would be a suitable place.

This new ifmedia(4) section provides context and equips curious readers
with additional technical terms to research if they wish.

Information about how 802.11 transmission rates work (roughly) and how they
evolved with each standard revision we support has been added.

Obsolete information about 2GHz restrictions in France has been removed.

Information about 5GHz channels has been added.

High-level information (11a/b/g/n/ac mode, hostap/ibss/monitor mode,
information about channels) is discussed before going into detailed
discussion about 802.11 data rates.

ok jmc@ schwarze@


Revision tags: OPENBSD_6_3_BASE OPENBSD_6_4_BASE OPENBSD_6_5_BASE OPENBSD_6_6_BASE
# 1.24 04-Feb-2018 stsp

Document 802.11ac media types and fix docs for the 11n ones while here.
suggested by and ok jmc@


# 1.23 05-Jan-2018 jmc

some 11n bits; help/ok stsp


Revision tags: OPENBSD_5_9_BASE OPENBSD_6_0_BASE OPENBSD_6_1_BASE OPENBSD_6_2_BASE
# 1.22 12-Jan-2016 stsp

Remove wireless turbo mode support. It is a non-standard extension
which only worked with ath(4) devices from a decade ago.
Diff tested on ath(4) hardware by me to verify that 11a/b modes still work.
ok reyk deraadt chris sthen kettenis


# 1.21 10-Sep-2015 schwarze

use .In rather than .Fd #include


Revision tags: OPENBSD_5_1_BASE OPENBSD_5_2_BASE OPENBSD_5_3_BASE OPENBSD_5_4_BASE OPENBSD_5_5_BASE OPENBSD_5_6_BASE OPENBSD_5_7_BASE OPENBSD_5_8_BASE
# 1.20 03-Sep-2011 jmc

make -column lists pretty again;

specifically, rewrite them to permit some markup in the column headers,
and use "Ta" instead of literal tabs; mandoc does not currently match groff
100%, but a mandoc fix may be some time off, and we've gone enough releases
with poorly formatting column lists.

in some cases i have rewritten the lists as -tag, where -column made
little sense.


Revision tags: OPENBSD_4_7_BASE OPENBSD_4_8_BASE OPENBSD_4_9_BASE OPENBSD_5_0_BASE
# 1.19 09-Feb-2010 claudio

Try to bring documentation up to the same state as the code. Document
many more medias, types and options. Input and OK sthen@ and jmc@


# 1.18 03-Jan-2010 schwarze

.Bl always requires .It, even in .Bl -column;
syntax errors found by mandoc(1), also required to fix the mandoc build;
feedback and ok jmc@ and sobrado@


Revision tags: OPENBSD_4_4_BASE OPENBSD_4_5_BASE OPENBSD_4_6_BASE
# 1.17 26-Jun-2008 ray

First pass at removing clauses 3 and 4 from NetBSD licenses.

Not sure what's more surprising: how long it took for NetBSD to
catch up to the rest of the BSDs (including UCB), or the amount of
code that NetBSD has claimed for itself without attributing to the
actual authors.

OK deraadt@


Revision tags: OPENBSD_4_2_BASE OPENBSD_4_3_BASE
# 1.16 31-May-2007 jmc

convert to new .Dd format;


# 1.15 29-May-2007 jmc

zap token ring bits; ok claudio


# 1.14 12-Apr-2007 jmc

add in channel frequency info from old wicontrol(8) page;
diff from Thoren McDole, cleaned up by myself;


Revision tags: OPENBSD_3_7_BASE OPENBSD_3_8_BASE OPENBSD_3_9_BASE OPENBSD_4_0_BASE OPENBSD_4_1_BASE
# 1.13 02-Mar-2005 jmc

update IEEE80211 media types and options;
ok jsg@


# 1.12 01-Mar-2005 jmc

a little spacing; some list adjustment;


Revision tags: OPENBSD_3_4_BASE OPENBSD_3_5_BASE OPENBSD_3_6_BASE
# 1.11 06-Jun-2003 jmc

- section reorder
- some macro fixes
- kill whitespace at EOL


Revision tags: OPENBSD_3_3_BASE
# 1.10 13-Jan-2003 kjell

Start sentence on new line. ok mpech@. "whatever" theo@


Revision tags: OPENBSD_3_1_BASE OPENBSD_3_2_BASE
# 1.9 05-Apr-2002 mickey

add 802.11 media configuration


# 1.8 13-Nov-2001 mpech

o) Fix bogus .Xr usage;
o) CAVEAT -> CAVEATS;
o) AUTHOR -> AUTHORS;
o) Start new sentence on a new line;
o) For URL and path names use .Pa;
o) We don't like .Pp before .Rs;
o) Don't use .Pp before/after .Sh;
o) OpenBSD -> .Ox;

millert@ ok and help;


Revision tags: OPENBSD_3_0_BASE
# 1.7 05-Oct-2001 mpech

Powered by @mantoya:
o) start new sentence on a new line;
o) minor mdoc fixes;
millert@ ok

Tip of the day: www.mpechismazohist.com


Revision tags: OPENBSD_2_9_BASE
# 1.6 01-Mar-2001 aaron

A slew of share/ man page fixes; nordin@cse.ogi.edu. These have been sitting
in my INBOX since Nov 6, 2000, probably forgot about them since the tree was
frozen at that time.


Revision tags: OPENBSD_2_6_BASE OPENBSD_2_7_BASE OPENBSD_2_8_BASE
# 1.5 23-Sep-1999 alex

Typo fixes.


# 1.4 07-Jul-1999 aaron

use Dv


# 1.3 05-Jun-1999 aaron

more .Os cleanup, remove some trailing whitespace, cleanse some .Nm


# 1.2 16-May-1999 alex

Cleanup xrefs under SEE ALSO. Specifically:

- Sort xrefs by section, and then alphabetically.
- Add missing commas between xref items.
- Remove commas from the last xref entry.
- Remove duplicate entries.


Revision tags: OPENBSD_2_4_BASE OPENBSD_2_5_BASE
# 1.1 03-Sep-1998 jason

Documentation for ifmedia & updated ifconfig usage


# 1.24 04-Feb-2018 stsp

Document 802.11ac media types and fix docs for the 11n ones while here.
suggested by and ok jmc@


# 1.23 05-Jan-2018 jmc

some 11n bits; help/ok stsp


Revision tags: OPENBSD_5_9_BASE OPENBSD_6_0_BASE OPENBSD_6_1_BASE OPENBSD_6_2_BASE
# 1.22 12-Jan-2016 stsp

Remove wireless turbo mode support. It is a non-standard extension
which only worked with ath(4) devices from a decade ago.
Diff tested on ath(4) hardware by me to verify that 11a/b modes still work.
ok reyk deraadt chris sthen kettenis


# 1.21 10-Sep-2015 schwarze

use .In rather than .Fd #include


Revision tags: OPENBSD_5_1_BASE OPENBSD_5_2_BASE OPENBSD_5_3_BASE OPENBSD_5_4_BASE OPENBSD_5_5_BASE OPENBSD_5_6_BASE OPENBSD_5_7_BASE OPENBSD_5_8_BASE
# 1.20 03-Sep-2011 jmc

make -column lists pretty again;

specifically, rewrite them to permit some markup in the column headers,
and use "Ta" instead of literal tabs; mandoc does not currently match groff
100%, but a mandoc fix may be some time off, and we've gone enough releases
with poorly formatting column lists.

in some cases i have rewritten the lists as -tag, where -column made
little sense.


Revision tags: OPENBSD_4_7_BASE OPENBSD_4_8_BASE OPENBSD_4_9_BASE OPENBSD_5_0_BASE
# 1.19 09-Feb-2010 claudio

Try to bring documentation up to the same state as the code. Document
many more medias, types and options. Input and OK sthen@ and jmc@


# 1.18 03-Jan-2010 schwarze

.Bl always requires .It, even in .Bl -column;
syntax errors found by mandoc(1), also required to fix the mandoc build;
feedback and ok jmc@ and sobrado@


Revision tags: OPENBSD_4_4_BASE OPENBSD_4_5_BASE OPENBSD_4_6_BASE
# 1.17 26-Jun-2008 ray

First pass at removing clauses 3 and 4 from NetBSD licenses.

Not sure what's more surprising: how long it took for NetBSD to
catch up to the rest of the BSDs (including UCB), or the amount of
code that NetBSD has claimed for itself without attributing to the
actual authors.

OK deraadt@


Revision tags: OPENBSD_4_2_BASE OPENBSD_4_3_BASE
# 1.16 31-May-2007 jmc

convert to new .Dd format;


# 1.15 29-May-2007 jmc

zap token ring bits; ok claudio


# 1.14 12-Apr-2007 jmc

add in channel frequency info from old wicontrol(8) page;
diff from Thoren McDole, cleaned up by myself;


Revision tags: OPENBSD_3_7_BASE OPENBSD_3_8_BASE OPENBSD_3_9_BASE OPENBSD_4_0_BASE OPENBSD_4_1_BASE
# 1.13 02-Mar-2005 jmc

update IEEE80211 media types and options;
ok jsg@


# 1.12 01-Mar-2005 jmc

a little spacing; some list adjustment;


Revision tags: OPENBSD_3_4_BASE OPENBSD_3_5_BASE OPENBSD_3_6_BASE
# 1.11 06-Jun-2003 jmc

- section reorder
- some macro fixes
- kill whitespace at EOL


Revision tags: OPENBSD_3_3_BASE
# 1.10 13-Jan-2003 kjell

Start sentence on new line. ok mpech@. "whatever" theo@


Revision tags: OPENBSD_3_1_BASE OPENBSD_3_2_BASE
# 1.9 05-Apr-2002 mickey

add 802.11 media configuration


# 1.8 13-Nov-2001 mpech

o) Fix bogus .Xr usage;
o) CAVEAT -> CAVEATS;
o) AUTHOR -> AUTHORS;
o) Start new sentence on a new line;
o) For URL and path names use .Pa;
o) We don't like .Pp before .Rs;
o) Don't use .Pp before/after .Sh;
o) OpenBSD -> .Ox;

millert@ ok and help;


Revision tags: OPENBSD_3_0_BASE
# 1.7 05-Oct-2001 mpech

Powered by @mantoya:
o) start new sentence on a new line;
o) minor mdoc fixes;
millert@ ok

Tip of the day: www.mpechismazohist.com


Revision tags: OPENBSD_2_9_BASE
# 1.6 01-Mar-2001 aaron

A slew of share/ man page fixes; nordin@cse.ogi.edu. These have been sitting
in my INBOX since Nov 6, 2000, probably forgot about them since the tree was
frozen at that time.


Revision tags: OPENBSD_2_6_BASE OPENBSD_2_7_BASE OPENBSD_2_8_BASE
# 1.5 23-Sep-1999 alex

Typo fixes.


# 1.4 07-Jul-1999 aaron

use Dv


# 1.3 05-Jun-1999 aaron

more .Os cleanup, remove some trailing whitespace, cleanse some .Nm


# 1.2 16-May-1999 alex

Cleanup xrefs under SEE ALSO. Specifically:

- Sort xrefs by section, and then alphabetically.
- Add missing commas between xref items.
- Remove commas from the last xref entry.
- Remove duplicate entries.


Revision tags: OPENBSD_2_4_BASE OPENBSD_2_5_BASE
# 1.1 03-Sep-1998 jason

Documentation for ifmedia & updated ifconfig usage


# 1.23 05-Jan-2018 jmc

some 11n bits; help/ok stsp


Revision tags: OPENBSD_5_9_BASE OPENBSD_6_0_BASE OPENBSD_6_1_BASE OPENBSD_6_2_BASE
# 1.22 12-Jan-2016 stsp

Remove wireless turbo mode support. It is a non-standard extension
which only worked with ath(4) devices from a decade ago.
Diff tested on ath(4) hardware by me to verify that 11a/b modes still work.
ok reyk deraadt chris sthen kettenis


# 1.21 10-Sep-2015 schwarze

use .In rather than .Fd #include


Revision tags: OPENBSD_5_1_BASE OPENBSD_5_2_BASE OPENBSD_5_3_BASE OPENBSD_5_4_BASE OPENBSD_5_5_BASE OPENBSD_5_6_BASE OPENBSD_5_7_BASE OPENBSD_5_8_BASE
# 1.20 03-Sep-2011 jmc

make -column lists pretty again;

specifically, rewrite them to permit some markup in the column headers,
and use "Ta" instead of literal tabs; mandoc does not currently match groff
100%, but a mandoc fix may be some time off, and we've gone enough releases
with poorly formatting column lists.

in some cases i have rewritten the lists as -tag, where -column made
little sense.


Revision tags: OPENBSD_4_7_BASE OPENBSD_4_8_BASE OPENBSD_4_9_BASE OPENBSD_5_0_BASE
# 1.19 09-Feb-2010 claudio

Try to bring documentation up to the same state as the code. Document
many more medias, types and options. Input and OK sthen@ and jmc@


# 1.18 03-Jan-2010 schwarze

.Bl always requires .It, even in .Bl -column;
syntax errors found by mandoc(1), also required to fix the mandoc build;
feedback and ok jmc@ and sobrado@


Revision tags: OPENBSD_4_4_BASE OPENBSD_4_5_BASE OPENBSD_4_6_BASE
# 1.17 26-Jun-2008 ray

First pass at removing clauses 3 and 4 from NetBSD licenses.

Not sure what's more surprising: how long it took for NetBSD to
catch up to the rest of the BSDs (including UCB), or the amount of
code that NetBSD has claimed for itself without attributing to the
actual authors.

OK deraadt@


Revision tags: OPENBSD_4_2_BASE OPENBSD_4_3_BASE
# 1.16 31-May-2007 jmc

convert to new .Dd format;


# 1.15 29-May-2007 jmc

zap token ring bits; ok claudio


# 1.14 12-Apr-2007 jmc

add in channel frequency info from old wicontrol(8) page;
diff from Thoren McDole, cleaned up by myself;


Revision tags: OPENBSD_3_7_BASE OPENBSD_3_8_BASE OPENBSD_3_9_BASE OPENBSD_4_0_BASE OPENBSD_4_1_BASE
# 1.13 02-Mar-2005 jmc

update IEEE80211 media types and options;
ok jsg@


# 1.12 01-Mar-2005 jmc

a little spacing; some list adjustment;


Revision tags: OPENBSD_3_4_BASE OPENBSD_3_5_BASE OPENBSD_3_6_BASE
# 1.11 06-Jun-2003 jmc

- section reorder
- some macro fixes
- kill whitespace at EOL


Revision tags: OPENBSD_3_3_BASE
# 1.10 13-Jan-2003 kjell

Start sentence on new line. ok mpech@. "whatever" theo@


Revision tags: OPENBSD_3_1_BASE OPENBSD_3_2_BASE
# 1.9 05-Apr-2002 mickey

add 802.11 media configuration


# 1.8 13-Nov-2001 mpech

o) Fix bogus .Xr usage;
o) CAVEAT -> CAVEATS;
o) AUTHOR -> AUTHORS;
o) Start new sentence on a new line;
o) For URL and path names use .Pa;
o) We don't like .Pp before .Rs;
o) Don't use .Pp before/after .Sh;
o) OpenBSD -> .Ox;

millert@ ok and help;


Revision tags: OPENBSD_3_0_BASE
# 1.7 05-Oct-2001 mpech

Powered by @mantoya:
o) start new sentence on a new line;
o) minor mdoc fixes;
millert@ ok

Tip of the day: www.mpechismazohist.com


Revision tags: OPENBSD_2_9_BASE
# 1.6 01-Mar-2001 aaron

A slew of share/ man page fixes; nordin@cse.ogi.edu. These have been sitting
in my INBOX since Nov 6, 2000, probably forgot about them since the tree was
frozen at that time.


Revision tags: OPENBSD_2_6_BASE OPENBSD_2_7_BASE OPENBSD_2_8_BASE
# 1.5 23-Sep-1999 alex

Typo fixes.


# 1.4 07-Jul-1999 aaron

use Dv


# 1.3 05-Jun-1999 aaron

more .Os cleanup, remove some trailing whitespace, cleanse some .Nm


# 1.2 16-May-1999 alex

Cleanup xrefs under SEE ALSO. Specifically:

- Sort xrefs by section, and then alphabetically.
- Add missing commas between xref items.
- Remove commas from the last xref entry.
- Remove duplicate entries.


Revision tags: OPENBSD_2_4_BASE OPENBSD_2_5_BASE
# 1.1 03-Sep-1998 jason

Documentation for ifmedia & updated ifconfig usage