ng_split(4) [opensolaris man page]

NG_SPLIT(4)                                                BSD Kernel Interfaces Manual                                                NG_SPLIT(4)

NAME

     ng_split -- netgraph node to separate incoming and outgoing flows

SYNOPSIS

     #include <netgraph/ng_split.h>

DESCRIPTION

     The split node type is used to split a bidirectional stream of packets into two separate unidirectional streams of packets.

HOOKS

     This node type supports the following three hooks:

     in      Packets received on in are forwarded to mixed.

     out     Packets received on out will be discarded as illegal.

     mixed   Packets received on mixed are forwarded to out.

CONTROL MESSAGES

     This node type supports only the generic control messages.

SHUTDOWN

     This node shuts down upon receipt of a NGM_SHUTDOWN control message, or when all hooks have been disconnected.

SEE ALSO

     netgraph(4), ngctl(8)

HISTORY

     The ng_split node type was implemented in FreeBSD 3.5 but incorporated into FreeBSD in FreeBSD 5.0.

AUTHORS

     Julian Elischer <julian@FreeBSD.org>
     Vitaly V. Belekhov <vitaly@riss-telecom.ru>

BSD                                                              February 19, 2001                                                             BSD

NG_UI(4)						   BSD Kernel Interfaces Manual 						  NG_UI(4)

NAME

     ng_UI -- UI netgraph node type

SYNOPSIS

     #include <netgraph/ng_UI.h>

DESCRIPTION

     The UI node type has two hooks, upstream and downstream.  Packets received on downstream must have 0x03 (indicating unnumbered information)
     as their first byte; if not the packet is dropped.  This byte is then stripped and the remainder of the packet sent out on upstream.

     Conversely, packets received on upstream will have a 0x03 byte prepended to them before being forwarded out on the downstream hook.

HOOKS

     This node type supports the following hooks:

     downstream
	     Downstream connection.  Packets on this side of the node have a 0x03 as their first byte.

     upstream
	     Upstream connection.  Packets on this side of the node have the initial 0x03 byte stripped off.

CONTROL MESSAGES

     This node type supports only the generic control messages.

SHUTDOWN

     This node shuts down upon receipt of a NGM_SHUTDOWN control message, or when both hooks have been disconnected.

SEE ALSO

     netgraph(4), ngctl(8)

HISTORY

     The ng_UI node type was implemented in FreeBSD 4.0.

AUTHORS

     Julian Elischer <julian@FreeBSD.org>

BSD
								 January 19, 1999							       BSD