| netgraph.4 (71263) | netgraph.4 (71849) |
|---|---|
| 1.\" Copyright (c) 1996-1999 Whistle Communications, Inc. 2.\" All rights reserved. 3.\" 4.\" Subject to the following obligations and disclaimer of warranty, use and 5.\" redistribution of this software, in source or object code forms, with or 6.\" without modifications are expressly permitted by Whistle Communications; 7.\" provided, however, that: 8.\" 1. Any and all reproductions of the source or object code must include the --- 19 unchanged lines hidden (view full) --- 28.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30.\" THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY 31.\" OF SUCH DAMAGE. 32.\" 33.\" Authors: Julian Elischer <julian@FreeBSD.org> 34.\" Archie Cobbs <archie@FreeBSD.org> 35.\" | 1.\" Copyright (c) 1996-1999 Whistle Communications, Inc. 2.\" All rights reserved. 3.\" 4.\" Subject to the following obligations and disclaimer of warranty, use and 5.\" redistribution of this software, in source or object code forms, with or 6.\" without modifications are expressly permitted by Whistle Communications; 7.\" provided, however, that: 8.\" 1. Any and all reproductions of the source or object code must include the --- 19 unchanged lines hidden (view full) --- 28.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30.\" THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY 31.\" OF SUCH DAMAGE. 32.\" 33.\" Authors: Julian Elischer <julian@FreeBSD.org> 34.\" Archie Cobbs <archie@FreeBSD.org> 35.\" |
| 36.\" $FreeBSD: head/share/man/man4/netgraph.4 71263 2001-01-19 14:15:40Z ru $ | 36.\" $FreeBSD: head/share/man/man4/netgraph.4 71849 2001-01-30 20:51:52Z julian $ |
| 37.\" $Whistle: netgraph.4,v 1.7 1999/01/28 23:54:52 julian Exp $ 38.\" 39.Dd January 19, 1999 40.Dt NETGRAPH 4 41.Os FreeBSD 42.Sh NAME 43.Nm netgraph 44.Nd graph based kernel networking subsystem --- 680 unchanged lines hidden (view full) --- 725.Pp 726.It 727references 728.Pp 729.Fn NG_HOOK_REF "hook" 730and 731.Fn NG_HOOK_UNREF "hook" 732increment and decrement the hook reference count accordingly. | 37.\" $Whistle: netgraph.4,v 1.7 1999/01/28 23:54:52 julian Exp $ 38.\" 39.Dd January 19, 1999 40.Dt NETGRAPH 4 41.Os FreeBSD 42.Sh NAME 43.Nm netgraph 44.Nd graph based kernel networking subsystem --- 680 unchanged lines hidden (view full) --- 725.Pp 726.It 727references 728.Pp 729.Fn NG_HOOK_REF "hook" 730and 731.Fn NG_HOOK_UNREF "hook" 732increment and decrement the hook reference count accordingly. |
| 733After decrement you should always sume the hook has been freed. 734In fact the macro may set it to NULL. | 733After decrement you should always assume the hook has been freed 734unless you have another reference still valid. |
| 735.El 736.Pp 737The maintenance of the names, reference counts, and linked list 738of hooks for each node is handled automatically by the 739.Nm 740subsystem. 741Typically a node's private info contains a back-pointer to the node or hook 742structure, which counts as a new reference that must be included --- 594 unchanged lines hidden --- | 735.El 736.Pp 737The maintenance of the names, reference counts, and linked list 738of hooks for each node is handled automatically by the 739.Nm 740subsystem. 741Typically a node's private info contains a back-pointer to the node or hook 742structure, which counts as a new reference that must be included --- 594 unchanged lines hidden --- |