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Document the new statistics control messages.

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Add a note about the IP header asymmetry on the "lower" hook.
This commit is contained in:
Archie Cobbs 2000-05-05 01:20:28 +00:00
parent 9bee7adfa8
commit 7a52493f42
2 changed files with 38 additions and 2 deletions
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20
share/man/man4/ng_pptpgre.4
View File

@ -52,6 +52,10 @@ encapsulation, sequencing, acknowlegement, and an adaptive timeout
sliding window mechanism. This node type does not handle any of
the TCP control protocol or call negotiation defined by PPTP.
.Pp
This node type expects to receive complete IP packets,
including the IP header, on the
.Dv lower
hook, but it transmits outgoing frames without any IP header.
The typical use for this node type would be to connect the
.Dv upper
hook to one of the link hooks of a
@ -104,6 +108,15 @@ The remaining fields are as supplied by the PPTP virtual call setup process.
.It Dv NGM_PPTPGRE_GET_CONFIG
Returns the current configuration as a
.Dv "struct ng_pptpgre_conf" .
.It Dv NGM_PPTPGRE_GET_STATS
This command returns a
.Dv "struct ng_pptpgre_stats"
containing various node statistics.
.It Dv NGM_PPTPGRE_CLR_STATS
This command resets the node statistics.
.It Dv NGM_PPTPGRE_GETCLR_STATS
This command atomically gets and resets the node statistics, returning a
.Dv "struct ng_pptpgre_stats" .
.El
.Sh SHUTDOWN
This node shuts down upon receipt of a
@ -132,10 +145,15 @@ control message, or when both hooks have been disconnected.
.%T "Generic Routing Encapsulation over IPv4 networks"
.%O RFC 1702
.Re
.Sh BUGS
The node should not expect incoming GRE packets to have an IP header.
This behavior is inherited from the (converse) behavior of raw IP sockets.
An intermediate node that strips IP headers in one direction
should be used instead.
.Sh HISTORY
The
.Nm
node type was implemented in
.Fx 4.0 .
.Sh AUTHORS
.Sh AUTHOR
.An Archie Cobbs Aq archie@whistle.com

20
sys/modules/netgraph/pptpgre/ng_pptpgre.4
View File

@ -52,6 +52,10 @@ encapsulation, sequencing, acknowlegement, and an adaptive timeout
sliding window mechanism. This node type does not handle any of
the TCP control protocol or call negotiation defined by PPTP.
.Pp
This node type expects to receive complete IP packets,
including the IP header, on the
.Dv lower
hook, but it transmits outgoing frames without any IP header.
The typical use for this node type would be to connect the
.Dv upper
hook to one of the link hooks of a
@ -104,6 +108,15 @@ The remaining fields are as supplied by the PPTP virtual call setup process.
.It Dv NGM_PPTPGRE_GET_CONFIG
Returns the current configuration as a
.Dv "struct ng_pptpgre_conf" .
.It Dv NGM_PPTPGRE_GET_STATS
This command returns a
.Dv "struct ng_pptpgre_stats"
containing various node statistics.
.It Dv NGM_PPTPGRE_CLR_STATS
This command resets the node statistics.
.It Dv NGM_PPTPGRE_GETCLR_STATS
This command atomically gets and resets the node statistics, returning a
.Dv "struct ng_pptpgre_stats" .
.El
.Sh SHUTDOWN
This node shuts down upon receipt of a
@ -132,10 +145,15 @@ control message, or when both hooks have been disconnected.
.%T "Generic Routing Encapsulation over IPv4 networks"
.%O RFC 1702
.Re
.Sh BUGS
The node should not expect incoming GRE packets to have an IP header.
This behavior is inherited from the (converse) behavior of raw IP sockets.
An intermediate node that strips IP headers in one direction
should be used instead.
.Sh HISTORY
The
.Nm
node type was implemented in
.Fx 4.0 .
.Sh AUTHORS
.Sh AUTHOR
.An Archie Cobbs Aq archie@whistle.com