mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-22 11:17:19 +00:00
101 lines
2.8 KiB
C
101 lines
2.8 KiB
C
/*-
|
|
* Copyright (c) 2004 Ruslan Ermilov
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON 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 ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/mbuf.h>
|
|
#include <sys/systm.h>
|
|
|
|
#include <netgraph/ng_message.h>
|
|
#include <netgraph/ng_hub.h>
|
|
#include <netgraph/netgraph.h>
|
|
|
|
static ng_constructor_t ng_hub_constructor;
|
|
static ng_rcvdata_t ng_hub_rcvdata;
|
|
static ng_disconnect_t ng_hub_disconnect;
|
|
|
|
static struct ng_type ng_hub_typestruct = {
|
|
.version = NG_ABI_VERSION,
|
|
.name = NG_HUB_NODE_TYPE,
|
|
.constructor = ng_hub_constructor,
|
|
.rcvdata = ng_hub_rcvdata,
|
|
.disconnect = ng_hub_disconnect,
|
|
};
|
|
NETGRAPH_INIT(hub, &ng_hub_typestruct);
|
|
|
|
|
|
static int
|
|
ng_hub_constructor(node_p node)
|
|
{
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
ng_hub_rcvdata(hook_p hook, item_p item)
|
|
{
|
|
const node_p node = NG_HOOK_NODE(hook);
|
|
int error = 0;
|
|
hook_p hook2;
|
|
struct mbuf * const m = NGI_M(item), *m2;
|
|
int nhooks;
|
|
|
|
if ((nhooks = NG_NODE_NUMHOOKS(node)) == 1) {
|
|
NG_FREE_ITEM(item);
|
|
return (0);
|
|
}
|
|
LIST_FOREACH(hook2, &node->nd_hooks, hk_hooks) {
|
|
if (hook2 == hook)
|
|
continue;
|
|
if (--nhooks == 1)
|
|
NG_FWD_ITEM_HOOK(error, item, hook2);
|
|
else {
|
|
if ((m2 = m_dup(m, M_DONTWAIT)) == NULL) {
|
|
NG_FREE_ITEM(item);
|
|
return (ENOBUFS);
|
|
}
|
|
NG_SEND_DATA_ONLY(error, hook2, m2);
|
|
if (error)
|
|
continue; /* don't give up */
|
|
}
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
ng_hub_disconnect(hook_p hook)
|
|
{
|
|
|
|
if (NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook)) == 0 &&
|
|
NG_NODE_IS_VALID(NG_HOOK_NODE(hook)))
|
|
ng_rmnode_self(NG_HOOK_NODE(hook));
|
|
return (0);
|
|
}
|