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📄 netgraph.h(41.17 KB)
📄 ng_UI.c(6.29 KB)
📄 ng_UI.h(2.36 KB)
📄 ng_async.c(16.51 KB)
📄 ng_async.h(4.05 KB)
📄 ng_atmllc.c(7.25 KB)
📄 ng_atmllc.h(1.85 KB)
📄 ng_base.c(100.62 KB)
📄 ng_bpf.c(14.66 KB)
📄 ng_bpf.h(3.97 KB)
📄 ng_bridge.c(29.37 KB)
📄 ng_bridge.h(7.58 KB)
📄 ng_car.c(19.62 KB)
📄 ng_car.h(4.6 KB)
📄 ng_checksum.c(15.85 KB)
📄 ng_checksum.h(2.63 KB)
📄 ng_cisco.c(15.47 KB)
📄 ng_cisco.h(3.39 KB)
📄 ng_deflate.c(17.09 KB)
📄 ng_deflate.h(2.85 KB)
📄 ng_device.c(10.65 KB)
📄 ng_device.h(1.74 KB)
📄 ng_echo.c(3.52 KB)
📄 ng_echo.h(2.28 KB)
📄 ng_eiface.c(16.31 KB)
📄 ng_eiface.h(2.09 KB)
📄 ng_etf.c(12.84 KB)
📄 ng_etf.h(3.05 KB)
📄 ng_ether.c(22.26 KB)
📄 ng_ether.h(3.22 KB)
📄 ng_ether_echo.c(4.17 KB)
📄 ng_ether_echo.h(2.32 KB)
📄 ng_frame_relay.c(13.21 KB)
📄 ng_frame_relay.h(2.51 KB)
📄 ng_gif.c(15.86 KB)
📄 ng_gif.h(4.04 KB)
📄 ng_gif_demux.c(10.83 KB)
📄 ng_gif_demux.h(2.05 KB)
📄 ng_hole.c(5.85 KB)
📄 ng_hole.h(2.69 KB)
📄 ng_hub.c(4.33 KB)
📄 ng_hub.h(1.68 KB)
📄 ng_iface.c(19.58 KB)
📄 ng_iface.h(2.68 KB)
📄 ng_ip_input.c(4.97 KB)
📄 ng_ip_input.h(3.78 KB)
📄 ng_ipfw.c(8.29 KB)
📄 ng_ipfw.h(1.54 KB)
📄 ng_ksocket.c(33.9 KB)
📄 ng_ksocket.h(3.86 KB)
📄 ng_l2tp.c(40.16 KB)
📄 ng_l2tp.h(8.12 KB)
📄 ng_lmi.c(28.15 KB)
📄 ng_lmi.h(3.2 KB)
📄 ng_macfilter.c(24.45 KB)
📄 ng_macfilter.h(5.7 KB)
📄 ng_message.h(14.69 KB)
📄 ng_mppc.c(23.88 KB)
📄 ng_mppc.h(3.29 KB)
📄 ng_nat.c(23.43 KB)
📄 ng_nat.h(6.87 KB)
📄 ng_one2many.c(15.88 KB)
📄 ng_one2many.h(4.56 KB)
📄 ng_parse.c(43.85 KB)
📄 ng_parse.h(18.49 KB)
📄 ng_patch.c(15.54 KB)
📄 ng_patch.h(3.64 KB)
📄 ng_pipe.c(26.97 KB)
📄 ng_pipe.h(5.56 KB)
📄 ng_ppp.c(72.27 KB)
📄 ng_ppp.h(9.77 KB)
📄 ng_pppoe.c(58.34 KB)
📄 ng_pppoe.h(9.64 KB)
📄 ng_pptpgre.c(36.05 KB)
📄 ng_pptpgre.h(6.04 KB)
📄 ng_pred1.c(18.02 KB)
📄 ng_pred1.h(2.73 KB)
📄 ng_rfc1490.c(13.33 KB)
📄 ng_rfc1490.h(2.62 KB)
📄 ng_sample.c(15.14 KB)
📄 ng_sample.h(3.53 KB)
📄 ng_socket.c(29.91 KB)
📄 ng_socket.h(2.73 KB)
📄 ng_socketvar.h(2.51 KB)
📄 ng_source.c(21.72 KB)
📄 ng_source.h(4.96 KB)
📄 ng_split.c(4.54 KB)
📄 ng_split.h(1.84 KB)
📄 ng_sppp.c(9.39 KB)
📄 ng_sppp.h(1.03 KB)
📄 ng_tag.c(19.05 KB)
📄 ng_tag.h(4.55 KB)
📄 ng_tcpmss.c(10.63 KB)
📄 ng_tcpmss.h(2.73 KB)
📄 ng_tee.c(10.61 KB)
📄 ng_tee.h(3.51 KB)
📄 ng_tty.c(11.96 KB)
📄 ng_tty.h(2.49 KB)
📄 ng_vjc.c(15.66 KB)
📄 ng_vjc.h(3.5 KB)
📄 ng_vlan.c(17.61 KB)
📄 ng_vlan.h(3.47 KB)

Editing: ng_hub.c

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * 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>

#ifdef NG_SEPARATE_MALLOC
static MALLOC_DEFINE(M_NETGRAPH_HUB, "netgraph_hub", "netgraph hub node");
#else
#define M_NETGRAPH_HUB M_NETGRAPH
#endif

/* Per-node private data */
struct ng_hub_private {
	int		persistent;	/* can exist w/o hooks */
};
typedef struct ng_hub_private *priv_p;

/* Netgraph node methods */
static ng_constructor_t	ng_hub_constructor;
static ng_rcvmsg_t	ng_hub_rcvmsg;
static ng_shutdown_t	ng_hub_shutdown;
static ng_rcvdata_t	ng_hub_rcvdata;
static ng_disconnect_t	ng_hub_disconnect;

/* List of commands and how to convert arguments to/from ASCII */
static const struct ng_cmdlist ng_hub_cmdlist[] = {
	{
		NGM_HUB_COOKIE,
		NGM_HUB_SET_PERSISTENT,
		"setpersistent",
		NULL,
		NULL
	},
	{ 0 }
};

static struct ng_type ng_hub_typestruct = {
	.version =	NG_ABI_VERSION,
	.name =		NG_HUB_NODE_TYPE,
	.constructor =	ng_hub_constructor,
	.rcvmsg =	ng_hub_rcvmsg,
	.shutdown =	ng_hub_shutdown,
	.rcvdata =	ng_hub_rcvdata,
	.disconnect =	ng_hub_disconnect,
	.cmdlist =	ng_hub_cmdlist,
};
NETGRAPH_INIT(hub, &ng_hub_typestruct);

static int
ng_hub_constructor(node_p node)
{
	priv_p priv;

/* Allocate and initialize private info */
	priv = malloc(sizeof(*priv), M_NETGRAPH_HUB, M_WAITOK | M_ZERO);

NG_NODE_SET_PRIVATE(node, priv);
	return (0);
}

/*
 * Receive a control message
 */
static int
ng_hub_rcvmsg(node_p node, item_p item, hook_p lasthook)
{
	const priv_p priv = NG_NODE_PRIVATE(node);
	int error = 0;
	struct ng_mesg *msg;

NGI_GET_MSG(item, msg);
	if (msg->header.typecookie == NGM_HUB_COOKIE &&
	    msg->header.cmd == NGM_HUB_SET_PERSISTENT) {
		priv->persistent = 1;
	} else {
		error = EINVAL;
	}

NG_FREE_MSG(msg);
	return (error);
}

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_NOWAIT)) == NULL) {
				NG_FREE_ITEM(item);
				return (ENOBUFS);
			}
			NG_SEND_DATA_ONLY(error, hook2, m2);
			if (error)
				continue;	/* don't give up */
		}
	}

return (error);
}

/*
 * Shutdown node
 */
static int
ng_hub_shutdown(node_p node)
{
	const priv_p priv = NG_NODE_PRIVATE(node);

free(priv, M_NETGRAPH_HUB);
	NG_NODE_SET_PRIVATE(node, NULL);
	NG_NODE_UNREF(node);
	return (0);
}

static int
ng_hub_disconnect(hook_p hook)
{
	const priv_p priv = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));

if (NG_NODE_NUMHOOKS(NG_HOOK_NODE(hook)) == 0 &&
	    NG_NODE_IS_VALID(NG_HOOK_NODE(hook)) && !priv->persistent)
		ng_rmnode_self(NG_HOOK_NODE(hook));
	return (0);
}

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Editing: ng_hub.c

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