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- Document updates in iface netgraph node type functionality

Browse Source 
- Remove makefile hacks for opt_inet.h, etc: the KLD now supports
  whatever address families your kernel was compiled with automagically
This commit is contained in:
Archie Cobbs 2000-03-13 19:19:48 +00:00
parent 15ba31b9ad
commit a7dc837919
4 changed files with 154 additions and 121 deletions
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83
share/man/man4/ng_iface.4
View File

@ -47,39 +47,55 @@
An
.Nm iface
node is both a netgraph node and a system networking interface. When an
.Nm
node is created, a new point-to-point interface appears which is accessible via
.Nm iface
node is created, a new interface appears which is accessible via
.Xr ifconfig 8 .
The new interfaces are named
.Nm Iface
node interfaces are named
.Dv ng0 ,
.Dv ng1 ,
etc. The node is assigned the same name as its interface, unless the name
etc.
When a node is shutdown, the corresponding interface is removed
and the interface name becomes available for reuse by future
.Nm iface
nodes; new nodes always take the first unused interface.
The node itself is assigned the same name as its interface, unless the name
already exists, in which case the node remains unnamed.
.Pp
An
.Nm
.Nm iface
node has a single hook corresponding to each supported protocol.
Packets transmitted via the interface flow out the corresponding
protocol-specific hook.
Similarly, packets received on a hook appear on the interface as
packets received in the corresponding protocol.
.Pp
The currently supported protocols are IP, IPX, AppleTalk, and NS.
In the KLD module, only support for IP is compiled in by default.
packets received into the corresponding protocol stack.
The currently supported protocols are IP, IPv6, AppleTalk, IPX, ATM,
NATM, and NS.
.Pp
An
.Nm
node supports the Berkeley Packet Filter (BPF).
.Nm iface
node be configured as a point-to-point interface or a broadcast interface.
The configuration can only be changed when the interface is down.
The default mode is point-to-point.
.Pp
.Nm Iface
nodes support the Berkeley Packet Filter (BPF).
.Sh HOOKS
This node type supports the following hooks:
.Pp
.Bl -tag -width foobar
.It Dv inet
Transmission and reception of IP packets.
.It Dv ipx
Transmission and reception of IPX packets.
.It Dv inet6
Transmission and reception of IPv6 packets.
.It Dv atalk
Transmission and reception of AppleTalk packets.
.It Dv ipx
Transmission and reception of IPX packets.
.It Dv atm
Transmission and reception of ATM packets.
.It Dv natm
Transmission and reception of NATM packets.
.It Dv ns
Transmission and reception of NS packets.
.El
@ -94,11 +110,12 @@ struct ng_iface_ifname {
char ngif_name[NG_IFACE_IFACE_NAME_MAX + 1];
};
.Ed
.It Dv NGM_IFACE_GET_IFADDRS
Returns the list of addresses associated with this interface.
The list is returned in the same format as the
.Dv SIOCGIFCONF
.Fn ioctl .
.It Dv NGM_IFACE_POINT2POINT
Set the interface to point-to-point mode.
The interface must not currently be up.
.It Dv NGM_IFACE_BROADCAST
Set the interface to broadcast mode.
The interface must not currently be up.
.It Dv NGM_CISCO_GET_IPADDR
This message is defined by the
.Xr ng_cisco 8
@ -107,28 +124,30 @@ node type; see
for a description.
.El
.Sh SHUTDOWN
Because it is currently not possible to remove a system networking
interface in
.Fx ,
.Nm
nodes are
.Em persistent.
That is, once created they are never destroyed.
The receipt of a
This node shuts down upon receipt of a
.Dv NGM_SHUTDOWN
control message disconnects all hooks but does not remove the node.
control message. The associated interface is removed and becomes available
for use by future
.Nm iface
nodes.
.Pp
Unlike most other node types, an
.Nm iface
node does
.Em not
go away when all hooks have been disconnected; rather, and explicit
.Dv NGM_SHUTDOWN
control message is required.
.Sh SEE ALSO
.Xr bpf 4 ,
.Xr netgraph 4 ,
.Xr ifconfig 8 ,
.Xr ng_cisco 8 ,
.Xr ng_ppp 8 ,
.Xr ng_rfc1490 8 ,
.Xr ngctl 8 .
.Xr ngctl 8
.Sh HISTORY
The
.Nm
.Nm iface
node type was implemented in
.Fx 4.0 .
.Sh AUTHORS
.Sh AUTHOR
.An Archie Cobbs Aq archie@whistle.com

26
sys/modules/netgraph/iface/Makefile
View File

@ -2,32 +2,8 @@
# $Whistle: Makefile,v 1.2 1999/01/19 19:39:21 archie Exp $
KMOD= ng_iface
SRCS= ng_iface.c opt_inet.h opt_atalk.h opt_ipx.h
SRCS= ng_iface.c
MAN8= ng_iface.8
KMODDEPS= netgraph
IFACE_INET?= 1 # 0/1 - requires INET configured in kernel
IFACE_NETATALK?= 0 # 0/1 - requires NETATALK configured in kernel
IFACE_IPX?= 0 # 0/1 - requires IPX configured in kernel
CFLAGS+= ${PROTOS}
opt_inet.h:
touch opt_inet.h
.if ${IFACE_INET} > 0
echo "#define INET 1" > opt_inet.h
.endif
opt_atalk.h:
touch opt_atalk.h
.if ${IFACE_NETATALK} > 0
echo "#define NETATALK ${IFACE_NETATALK}" > opt_atalk.h
.endif
opt_ipx.h:
touch opt_ipx.h
.if ${IFACE_IPX} > 0
echo "#define IPX ${IFACE_IPX}" > opt_ipx.h
.endif
.include <bsd.kmod.mk>

83
sys/modules/netgraph/iface/ng_iface.4
View File

@ -47,39 +47,55 @@
An
.Nm iface
node is both a netgraph node and a system networking interface. When an
.Nm
node is created, a new point-to-point interface appears which is accessible via
.Nm iface
node is created, a new interface appears which is accessible via
.Xr ifconfig 8 .
The new interfaces are named
.Nm Iface
node interfaces are named
.Dv ng0 ,
.Dv ng1 ,
etc. The node is assigned the same name as its interface, unless the name
etc.
When a node is shutdown, the corresponding interface is removed
and the interface name becomes available for reuse by future
.Nm iface
nodes; new nodes always take the first unused interface.
The node itself is assigned the same name as its interface, unless the name
already exists, in which case the node remains unnamed.
.Pp
An
.Nm
.Nm iface
node has a single hook corresponding to each supported protocol.
Packets transmitted via the interface flow out the corresponding
protocol-specific hook.
Similarly, packets received on a hook appear on the interface as
packets received in the corresponding protocol.
.Pp
The currently supported protocols are IP, IPX, AppleTalk, and NS.
In the KLD module, only support for IP is compiled in by default.
packets received into the corresponding protocol stack.
The currently supported protocols are IP, IPv6, AppleTalk, IPX, ATM,
NATM, and NS.
.Pp
An
.Nm
node supports the Berkeley Packet Filter (BPF).
.Nm iface
node be configured as a point-to-point interface or a broadcast interface.
The configuration can only be changed when the interface is down.
The default mode is point-to-point.
.Pp
.Nm Iface
nodes support the Berkeley Packet Filter (BPF).
.Sh HOOKS
This node type supports the following hooks:
.Pp
.Bl -tag -width foobar
.It Dv inet
Transmission and reception of IP packets.
.It Dv ipx
Transmission and reception of IPX packets.
.It Dv inet6
Transmission and reception of IPv6 packets.
.It Dv atalk
Transmission and reception of AppleTalk packets.
.It Dv ipx
Transmission and reception of IPX packets.
.It Dv atm
Transmission and reception of ATM packets.
.It Dv natm
Transmission and reception of NATM packets.
.It Dv ns
Transmission and reception of NS packets.
.El
@ -94,11 +110,12 @@ struct ng_iface_ifname {
char ngif_name[NG_IFACE_IFACE_NAME_MAX + 1];
};
.Ed
.It Dv NGM_IFACE_GET_IFADDRS
Returns the list of addresses associated with this interface.
The list is returned in the same format as the
.Dv SIOCGIFCONF
.Fn ioctl .
.It Dv NGM_IFACE_POINT2POINT
Set the interface to point-to-point mode.
The interface must not currently be up.
.It Dv NGM_IFACE_BROADCAST
Set the interface to broadcast mode.
The interface must not currently be up.
.It Dv NGM_CISCO_GET_IPADDR
This message is defined by the
.Xr ng_cisco 8
@ -107,28 +124,30 @@ node type; see
for a description.
.El
.Sh SHUTDOWN
Because it is currently not possible to remove a system networking
interface in
.Fx ,
.Nm
nodes are
.Em persistent.
That is, once created they are never destroyed.
The receipt of a
This node shuts down upon receipt of a
.Dv NGM_SHUTDOWN
control message disconnects all hooks but does not remove the node.
control message. The associated interface is removed and becomes available
for use by future
.Nm iface
nodes.
.Pp
Unlike most other node types, an
.Nm iface
node does
.Em not
go away when all hooks have been disconnected; rather, and explicit
.Dv NGM_SHUTDOWN
control message is required.
.Sh SEE ALSO
.Xr bpf 4 ,
.Xr netgraph 4 ,
.Xr ifconfig 8 ,
.Xr ng_cisco 8 ,
.Xr ng_ppp 8 ,
.Xr ng_rfc1490 8 ,
.Xr ngctl 8 .
.Xr ngctl 8
.Sh HISTORY
The
.Nm
.Nm iface
node type was implemented in
.Fx 4.0 .
.Sh AUTHORS
.Sh AUTHOR
.An Archie Cobbs Aq archie@whistle.com

83
sys/modules/netgraph/iface/ng_iface.8
View File

@ -47,39 +47,55 @@
An
.Nm iface
node is both a netgraph node and a system networking interface. When an
.Nm
node is created, a new point-to-point interface appears which is accessible via
.Nm iface
node is created, a new interface appears which is accessible via
.Xr ifconfig 8 .
The new interfaces are named
.Nm Iface
node interfaces are named
.Dv ng0 ,
.Dv ng1 ,
etc. The node is assigned the same name as its interface, unless the name
etc.
When a node is shutdown, the corresponding interface is removed
and the interface name becomes available for reuse by future
.Nm iface
nodes; new nodes always take the first unused interface.
The node itself is assigned the same name as its interface, unless the name
already exists, in which case the node remains unnamed.
.Pp
An
.Nm
.Nm iface
node has a single hook corresponding to each supported protocol.
Packets transmitted via the interface flow out the corresponding
protocol-specific hook.
Similarly, packets received on a hook appear on the interface as
packets received in the corresponding protocol.
.Pp
The currently supported protocols are IP, IPX, AppleTalk, and NS.
In the KLD module, only support for IP is compiled in by default.
packets received into the corresponding protocol stack.
The currently supported protocols are IP, IPv6, AppleTalk, IPX, ATM,
NATM, and NS.
.Pp
An
.Nm
node supports the Berkeley Packet Filter (BPF).
.Nm iface
node be configured as a point-to-point interface or a broadcast interface.
The configuration can only be changed when the interface is down.
The default mode is point-to-point.
.Pp
.Nm Iface
nodes support the Berkeley Packet Filter (BPF).
.Sh HOOKS
This node type supports the following hooks:
.Pp
.Bl -tag -width foobar
.It Dv inet
Transmission and reception of IP packets.
.It Dv ipx
Transmission and reception of IPX packets.
.It Dv inet6
Transmission and reception of IPv6 packets.
.It Dv atalk
Transmission and reception of AppleTalk packets.
.It Dv ipx
Transmission and reception of IPX packets.
.It Dv atm
Transmission and reception of ATM packets.
.It Dv natm
Transmission and reception of NATM packets.
.It Dv ns
Transmission and reception of NS packets.
.El
@ -94,11 +110,12 @@ struct ng_iface_ifname {
char ngif_name[NG_IFACE_IFACE_NAME_MAX + 1];
};
.Ed
.It Dv NGM_IFACE_GET_IFADDRS
Returns the list of addresses associated with this interface.
The list is returned in the same format as the
.Dv SIOCGIFCONF
.Fn ioctl .
.It Dv NGM_IFACE_POINT2POINT
Set the interface to point-to-point mode.
The interface must not currently be up.
.It Dv NGM_IFACE_BROADCAST
Set the interface to broadcast mode.
The interface must not currently be up.
.It Dv NGM_CISCO_GET_IPADDR
This message is defined by the
.Xr ng_cisco 8
@ -107,28 +124,30 @@ node type; see
for a description.
.El
.Sh SHUTDOWN
Because it is currently not possible to remove a system networking
interface in
.Fx ,
.Nm
nodes are
.Em persistent.
That is, once created they are never destroyed.
The receipt of a
This node shuts down upon receipt of a
.Dv NGM_SHUTDOWN
control message disconnects all hooks but does not remove the node.
control message. The associated interface is removed and becomes available
for use by future
.Nm iface
nodes.
.Pp
Unlike most other node types, an
.Nm iface
node does
.Em not
go away when all hooks have been disconnected; rather, and explicit
.Dv NGM_SHUTDOWN
control message is required.
.Sh SEE ALSO
.Xr bpf 4 ,
.Xr netgraph 4 ,
.Xr ifconfig 8 ,
.Xr ng_cisco 8 ,
.Xr ng_ppp 8 ,
.Xr ng_rfc1490 8 ,
.Xr ngctl 8 .
.Xr ngctl 8
.Sh HISTORY
The
.Nm
.Nm iface
node type was implemented in
.Fx 4.0 .
.Sh AUTHORS
.Sh AUTHOR
.An Archie Cobbs Aq archie@whistle.com