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freebsd-nq/share/man/man4/ng_tty.4

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Whistle's Netgraph link-layer (sometimes more) networking infrastructure. Been in production for 3 years now. Gives Instant Frame relay to if_sr and if_ar drivers, and PPPOE support soon. See: ftp://ftp.whistle.com/pub/archie/netgraph/index.html for on-line manual pages. Reviewed by: Doug Rabson (dfr@freebsd.org) Obtained from: Whistle CVS tree
1999-10-21 09:06:11 +00:00
.\" Copyright (c) 1996-1999 Whistle Communications, Inc.
.\" All rights reserved.
Removed whitespace at end-of-line; no content changes. I simply did cd src/share; find man[1-9] -type f|xargs perl -pi -e 's/[ \t]+$//' BTW, what editors are the culprits? I'm using vim and it shows me whitespace at EOL in troff files with a thick blue block... Reviewed by: Silence from cvs diff -b MFC after: 7 days
2001-07-14 19:41:16 +00:00
.\"
Whistle's Netgraph link-layer (sometimes more) networking infrastructure. Been in production for 3 years now. Gives Instant Frame relay to if_sr and if_ar drivers, and PPPOE support soon. See: ftp://ftp.whistle.com/pub/archie/netgraph/index.html for on-line manual pages. Reviewed by: Doug Rabson (dfr@freebsd.org) Obtained from: Whistle CVS tree
1999-10-21 09:06:11 +00:00
.\" Subject to the following obligations and disclaimer of warranty, use and
.\" redistribution of this software, in source or object code forms, with or
.\" without modifications are expressly permitted by Whistle Communications;
.\" provided, however, that:
.\" 1. Any and all reproductions of the source or object code must include the
.\" copyright notice above and the following disclaimer of warranties; and
.\" 2. No rights are granted, in any manner or form, to use Whistle
.\" Communications, Inc. trademarks, including the mark "WHISTLE
.\" COMMUNICATIONS" on advertising, endorsements, or otherwise except as
.\" such appears in the above copyright notice or in the software.
Removed whitespace at end-of-line; no content changes. I simply did cd src/share; find man[1-9] -type f|xargs perl -pi -e 's/[ \t]+$//' BTW, what editors are the culprits? I'm using vim and it shows me whitespace at EOL in troff files with a thick blue block... Reviewed by: Silence from cvs diff -b MFC after: 7 days
2001-07-14 19:41:16 +00:00
.\"
Whistle's Netgraph link-layer (sometimes more) networking infrastructure. Been in production for 3 years now. Gives Instant Frame relay to if_sr and if_ar drivers, and PPPOE support soon. See: ftp://ftp.whistle.com/pub/archie/netgraph/index.html for on-line manual pages. Reviewed by: Doug Rabson (dfr@freebsd.org) Obtained from: Whistle CVS tree
1999-10-21 09:06:11 +00:00
.\" THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
.\" TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
.\" REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
.\" INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
.\" WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
.\" REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
.\" SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
.\" IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
.\" RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
.\" WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
.\" PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
.\" SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
.\" THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
.\" OF SUCH DAMAGE.
Removed whitespace at end-of-line; no content changes. I simply did cd src/share; find man[1-9] -type f|xargs perl -pi -e 's/[ \t]+$//' BTW, what editors are the culprits? I'm using vim and it shows me whitespace at EOL in troff files with a thick blue block... Reviewed by: Silence from cvs diff -b MFC after: 7 days
2001-07-14 19:41:16 +00:00
.\"
Update @freebsd.org email addresses to @FreeBSD.org as is the precedent.
2000-10-26 15:30:44 +00:00
.\" Author: Archie Cobbs <archie@FreeBSD.org>
Whistle's Netgraph link-layer (sometimes more) networking infrastructure. Been in production for 3 years now. Gives Instant Frame relay to if_sr and if_ar drivers, and PPPOE support soon. See: ftp://ftp.whistle.com/pub/archie/netgraph/index.html for on-line manual pages. Reviewed by: Doug Rabson (dfr@freebsd.org) Obtained from: Whistle CVS tree
1999-10-21 09:06:11 +00:00
.\"
.\" $FreeBSD$
.\" $Whistle: ng_tty.8,v 1.5 1999/01/25 23:46:28 archie Exp $
.\"
Update for the last API changes.
2008-12-25 10:18:35 +00:00
.Dd December 25, 2008
Move netgraph node type man pages from section 8 to section 4.
2000-05-04 17:54:37 +00:00
.Dt NG_TTY 4
mdoc(7) police: removed HISTORY info from the .Os call.
2001-07-10 15:31:11 +00:00
.Os
Whistle's Netgraph link-layer (sometimes more) networking infrastructure. Been in production for 3 years now. Gives Instant Frame relay to if_sr and if_ar drivers, and PPPOE support soon. See: ftp://ftp.whistle.com/pub/archie/netgraph/index.html for on-line manual pages. Reviewed by: Doug Rabson (dfr@freebsd.org) Obtained from: Whistle CVS tree
1999-10-21 09:06:11 +00:00
.Sh NAME
.Nm ng_tty
Update ng_tty for MPSAFE TTY. This changes from a line discipline to the tty_hooks mechanism. Data will come in directly via rint_bypass and sent to the peer node in a single mbuf. As line disciplines are no longer used a new netgraph command called NGM_TTY_SET_TTY is used to attach the tty. This takes a pointer to to the open file descriptor of the tty and registers the tty hooks. When the tty disappears the node will shutdown. Thanks to: ed Sponsored by: Hobnob, Inc
2008-10-03 05:14:54 +00:00
.Nd netgraph node type that is also a TTY hook
Whistle's Netgraph link-layer (sometimes more) networking infrastructure. Been in production for 3 years now. Gives Instant Frame relay to if_sr and if_ar drivers, and PPPOE support soon. See: ftp://ftp.whistle.com/pub/archie/netgraph/index.html for on-line manual pages. Reviewed by: Doug Rabson (dfr@freebsd.org) Obtained from: Whistle CVS tree
1999-10-21 09:06:11 +00:00
.Sh SYNOPSIS
Verify that SYNOPSIS section compiles.
2005-02-05 11:31:31 +00:00
.In sys/types.h
mdoc(7) police: Use the new .In macro for #include statements.
2001-10-01 16:09:29 +00:00
.In sys/ttycom.h
.In netgraph/ng_tty.h
Whistle's Netgraph link-layer (sometimes more) networking infrastructure. Been in production for 3 years now. Gives Instant Frame relay to if_sr and if_ar drivers, and PPPOE support soon. See: ftp://ftp.whistle.com/pub/archie/netgraph/index.html for on-line manual pages. Reviewed by: Doug Rabson (dfr@freebsd.org) Obtained from: Whistle CVS tree
1999-10-21 09:06:11 +00:00
.Sh DESCRIPTION
The
.Nm tty
Update ng_tty for MPSAFE TTY. This changes from a line discipline to the tty_hooks mechanism. Data will come in directly via rint_bypass and sent to the peer node in a single mbuf. As line disciplines are no longer used a new netgraph command called NGM_TTY_SET_TTY is used to attach the tty. This takes a pointer to to the open file descriptor of the tty and registers the tty hooks. When the tty disappears the node will shutdown. Thanks to: ed Sponsored by: Hobnob, Inc
2008-10-03 05:14:54 +00:00
node type is both a netgraph node type and a TTY hook.
Whistle's Netgraph link-layer (sometimes more) networking infrastructure. Been in production for 3 years now. Gives Instant Frame relay to if_sr and if_ar drivers, and PPPOE support soon. See: ftp://ftp.whistle.com/pub/archie/netgraph/index.html for on-line manual pages. Reviewed by: Doug Rabson (dfr@freebsd.org) Obtained from: Whistle CVS tree
1999-10-21 09:06:11 +00:00
.Pp
The node has a single hook called
.Dv hook .
Incoming bytes received on the tty device are sent out on this hook,
and frames received on
.Dv hook
are transmitted out on the tty device.
No modification to the data is performed in either direction.
Remove trailing whitespace per mdoc lint warning Disussed with: gavin No objection from: doc Approved by: joel MFC after: 3 days
2012-03-29 05:02:12 +00:00
While the hook is installed on a tty, the normal read and write
Update ng_tty for MPSAFE TTY. This changes from a line discipline to the tty_hooks mechanism. Data will come in directly via rint_bypass and sent to the peer node in a single mbuf. As line disciplines are no longer used a new netgraph command called NGM_TTY_SET_TTY is used to attach the tty. This takes a pointer to to the open file descriptor of the tty and registers the tty hooks. When the tty disappears the node will shutdown. Thanks to: ed Sponsored by: Hobnob, Inc
2008-10-03 05:14:54 +00:00
operations are unavailable, returning
Whistle's Netgraph link-layer (sometimes more) networking infrastructure. Been in production for 3 years now. Gives Instant Frame relay to if_sr and if_ar drivers, and PPPOE support soon. See: ftp://ftp.whistle.com/pub/archie/netgraph/index.html for on-line manual pages. Reviewed by: Doug Rabson (dfr@freebsd.org) Obtained from: Whistle CVS tree
1999-10-21 09:06:11 +00:00
.Er EIO .
.Pp
Update ng_tty for MPSAFE TTY. This changes from a line discipline to the tty_hooks mechanism. Data will come in directly via rint_bypass and sent to the peer node in a single mbuf. As line disciplines are no longer used a new netgraph command called NGM_TTY_SET_TTY is used to attach the tty. This takes a pointer to to the open file descriptor of the tty and registers the tty hooks. When the tty disappears the node will shutdown. Thanks to: ed Sponsored by: Hobnob, Inc
2008-10-03 05:14:54 +00:00
Incoming data is delivered directly to ng_tty via the tty bypass hook as a
buffer pointer and length, this is converted to a mbuf and passed to the peer.
.Pp
Manual page style work. Submitted by: Alexey Zelkin <phantom@FreeBSD.org> thanks!
1999-12-21 01:25:21 +00:00
The node supports an optional
.Dq hot character .
Update ng_tty for MPSAFE TTY. This changes from a line discipline to the tty_hooks mechanism. Data will come in directly via rint_bypass and sent to the peer node in a single mbuf. As line disciplines are no longer used a new netgraph command called NGM_TTY_SET_TTY is used to attach the tty. This takes a pointer to to the open file descriptor of the tty and registers the tty hooks. When the tty disappears the node will shutdown. Thanks to: ed Sponsored by: Hobnob, Inc
2008-10-03 05:14:54 +00:00
If the driver can not deliver data directly to the tty bypass hook then each
character is input one at a time.
If set to non-zero and bypass mode is unavailable, incoming
Whistle's Netgraph link-layer (sometimes more) networking infrastructure. Been in production for 3 years now. Gives Instant Frame relay to if_sr and if_ar drivers, and PPPOE support soon. See: ftp://ftp.whistle.com/pub/archie/netgraph/index.html for on-line manual pages. Reviewed by: Doug Rabson (dfr@freebsd.org) Obtained from: Whistle CVS tree
1999-10-21 09:06:11 +00:00
data from the tty device is queued until this character is seen.
This avoids sending lots of mbufs containing a small number of bytes,
but introduces potentially infinite latency.
The default hot character is 0x7e, consistent with
.Dv hook
being connected to a
Move netgraph node type man pages from section 8 to section 4.
2000-05-04 17:54:37 +00:00
.Xr ng_async 4
Mechanically kill hard sentence breaks and double whitespaces.
2004-07-03 18:29:24 +00:00
type node.
The hot character has no effect on the transmission of data.
Whistle's Netgraph link-layer (sometimes more) networking infrastructure. Been in production for 3 years now. Gives Instant Frame relay to if_sr and if_ar drivers, and PPPOE support soon. See: ftp://ftp.whistle.com/pub/archie/netgraph/index.html for on-line manual pages. Reviewed by: Doug Rabson (dfr@freebsd.org) Obtained from: Whistle CVS tree
1999-10-21 09:06:11 +00:00
.Sh HOOKS
This node type supports the following hooks:
Updates for netgraph node manual pages. Discussed with: glebius Submitted by: Mamontov Roman <mr.xanto@gmail.com>
2012-11-13 20:41:36 +00:00
.Bl -tag -width ".Va hook"
.It Va hook
Whistle's Netgraph link-layer (sometimes more) networking infrastructure. Been in production for 3 years now. Gives Instant Frame relay to if_sr and if_ar drivers, and PPPOE support soon. See: ftp://ftp.whistle.com/pub/archie/netgraph/index.html for on-line manual pages. Reviewed by: Doug Rabson (dfr@freebsd.org) Obtained from: Whistle CVS tree
1999-10-21 09:06:11 +00:00
.Xr tty 4
serial data contained in
.Dv mbuf
structures, with arbitrary inter-frame boundaries.
.El
.Sh CONTROL MESSAGES
This node type supports the generic control messages, plus the following:
.Bl -tag -width foo
.It Dv NGM_TTY_SET_HOTCHAR
This command takes an integer argument and sets the hot character
Mechanically kill hard sentence breaks and double whitespaces.
2004-07-03 18:29:24 +00:00
from the lower 8 bits.
A hot character of zero disables queueing,
Whistle's Netgraph link-layer (sometimes more) networking infrastructure. Been in production for 3 years now. Gives Instant Frame relay to if_sr and if_ar drivers, and PPPOE support soon. See: ftp://ftp.whistle.com/pub/archie/netgraph/index.html for on-line manual pages. Reviewed by: Doug Rabson (dfr@freebsd.org) Obtained from: Whistle CVS tree
1999-10-21 09:06:11 +00:00
so that all received data is forwarded immediately.
.It Dv NGM_TTY_GET_HOTCHAR
Returns an integer containing the current hot character in the lower
eight bits.
Update ng_tty for MPSAFE TTY. This changes from a line discipline to the tty_hooks mechanism. Data will come in directly via rint_bypass and sent to the peer node in a single mbuf. As line disciplines are no longer used a new netgraph command called NGM_TTY_SET_TTY is used to attach the tty. This takes a pointer to to the open file descriptor of the tty and registers the tty hooks. When the tty disappears the node will shutdown. Thanks to: ed Sponsored by: Hobnob, Inc
2008-10-03 05:14:54 +00:00
.It Dv NGM_TTY_SET_TTY
Update for the last API changes.
2008-12-25 10:18:35 +00:00
This command takes integer process ID and file descriptor of open tty
Update ng_tty for MPSAFE TTY. This changes from a line discipline to the tty_hooks mechanism. Data will come in directly via rint_bypass and sent to the peer node in a single mbuf. As line disciplines are no longer used a new netgraph command called NGM_TTY_SET_TTY is used to attach the tty. This takes a pointer to to the open file descriptor of the tty and registers the tty hooks. When the tty disappears the node will shutdown. Thanks to: ed Sponsored by: Hobnob, Inc
2008-10-03 05:14:54 +00:00
and registers the tty hooks.
Prepare for mdoc(7)NG.
2000-12-29 09:18:45 +00:00
.El
Whistle's Netgraph link-layer (sometimes more) networking infrastructure. Been in production for 3 years now. Gives Instant Frame relay to if_sr and if_ar drivers, and PPPOE support soon. See: ftp://ftp.whistle.com/pub/archie/netgraph/index.html for on-line manual pages. Reviewed by: Doug Rabson (dfr@freebsd.org) Obtained from: Whistle CVS tree
1999-10-21 09:06:11 +00:00
.Sh SHUTDOWN
Update ng_tty for MPSAFE TTY. This changes from a line discipline to the tty_hooks mechanism. Data will come in directly via rint_bypass and sent to the peer node in a single mbuf. As line disciplines are no longer used a new netgraph command called NGM_TTY_SET_TTY is used to attach the tty. This takes a pointer to to the open file descriptor of the tty and registers the tty hooks. When the tty disappears the node will shutdown. Thanks to: ed Sponsored by: Hobnob, Inc
2008-10-03 05:14:54 +00:00
This node shuts down when the corresponding device is closed.
Whistle's Netgraph link-layer (sometimes more) networking infrastructure. Been in production for 3 years now. Gives Instant Frame relay to if_sr and if_ar drivers, and PPPOE support soon. See: ftp://ftp.whistle.com/pub/archie/netgraph/index.html for on-line manual pages. Reviewed by: Doug Rabson (dfr@freebsd.org) Obtained from: Whistle CVS tree
1999-10-21 09:06:11 +00:00
.Sh SEE ALSO
.Xr ioctl 2 ,
.Xr netgraph 4 ,
Move netgraph node type man pages from section 8 to section 4.
2000-05-04 17:54:37 +00:00
.Xr ng_async 4 ,
mdoc(7) police: sort SEE ALSO xrefs (sort -b -f +2 -3 +1 -2).
2001-07-06 16:46:48 +00:00
.Xr tty 4 ,
Move netgraph node type man pages from section 8 to section 4.
2000-05-04 17:54:37 +00:00
.Xr ngctl 8
Manual page style work. Submitted by: Alexey Zelkin <phantom@FreeBSD.org> thanks!
1999-12-21 01:25:21 +00:00
.Sh HISTORY
The
.Nm
node type was implemented in
.Fx 4.0 .
.Sh AUTHORS
Update @freebsd.org email addresses to @FreeBSD.org as is the precedent.
2000-10-26 15:30:44 +00:00
.An Archie Cobbs Aq archie@FreeBSD.org
Update ng_tty for MPSAFE TTY. This changes from a line discipline to the tty_hooks mechanism. Data will come in directly via rint_bypass and sent to the peer node in a single mbuf. As line disciplines are no longer used a new netgraph command called NGM_TTY_SET_TTY is used to attach the tty. This takes a pointer to to the open file descriptor of the tty and registers the tty hooks. When the tty disappears the node will shutdown. Thanks to: ed Sponsored by: Hobnob, Inc
2008-10-03 05:14:54 +00:00
.An Andrew Thompson Aq thompsa@FreeBSD.org
Sort sections.
2005-01-21 08:36:40 +00:00
.Sh BUGS
The serial driver code also has a notion of a
.Dq hot character .
Unfortunately, this value is statically defined in terms of the
line discipline and cannot be changed.
Therefore, if a hot character other than 0x7e (the default) is set for the
.Nm
node, the node has no way to convey this information to the
serial driver, and sub-optimal performance may result.
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