[linux-2.6-block.git] / net / sched / sch_ingress.c

/* net/sched/sch_ingress.c - Ingress qdisc
 *              This program is free software; you can redistribute it and/or
 *              modify it under the terms of the GNU General Public License
 *              as published by the Free Software Foundation; either version
 *              2 of the License, or (at your option) any later version.
 *
 * Authors:     Jamal Hadi Salim 1999
 */

#include <linux/module.h>
#include <linux/types.h>
#include <linux/list.h>
#include <linux/skbuff.h>
#include <linux/rtnetlink.h>
#include <linux/netfilter_ipv4.h>
#include <linux/netfilter_ipv6.h>
#include <linux/netfilter.h>
#include <net/netlink.h>
#include <net/pkt_sched.h>


#undef DEBUG_INGRESS

#ifdef DEBUG_INGRESS  /* control */
#define DPRINTK(format,args...) printk(KERN_DEBUG format,##args)
#else
#define DPRINTK(format,args...)
#endif

#if 0  /* data */
#define D2PRINTK(format,args...) printk(KERN_DEBUG format,##args)
#else
#define D2PRINTK(format,args...)
#endif


#define PRIV(sch) qdisc_priv(sch)


/* Thanks to Doron Oz for this hack
*/
#ifndef CONFIG_NET_CLS_ACT
#ifdef CONFIG_NETFILTER
static int nf_registered;
#endif
#endif

struct ingress_qdisc_data {
	struct Qdisc		*q;
	struct tcf_proto	*filter_list;
};


/* ------------------------- Class/flow operations ------------------------- */


static int ingress_graft(struct Qdisc *sch,unsigned long arg,
    struct Qdisc *new,struct Qdisc **old)
{
#ifdef DEBUG_INGRESS
	struct ingress_qdisc_data *p = PRIV(sch);
#endif

	DPRINTK("ingress_graft(sch %p,[qdisc %p],new %p,old %p)\n",
		sch, p, new, old);
	DPRINTK("\n ingress_graft: You cannot add qdiscs to classes");
	return 1;
}


static struct Qdisc *ingress_leaf(struct Qdisc *sch, unsigned long arg)
{
	return NULL;
}


static unsigned long ingress_get(struct Qdisc *sch,u32 classid)
{
#ifdef DEBUG_INGRESS
	struct ingress_qdisc_data *p = PRIV(sch);
#endif
	DPRINTK("ingress_get(sch %p,[qdisc %p],classid %x)\n", sch, p, classid);
	return TC_H_MIN(classid) + 1;
}


static unsigned long ingress_bind_filter(struct Qdisc *sch,
    unsigned long parent, u32 classid)
{
	return ingress_get(sch, classid);
}


static void ingress_put(struct Qdisc *sch, unsigned long cl)
{
}


static int ingress_change(struct Qdisc *sch, u32 classid, u32 parent,
    struct rtattr **tca, unsigned long *arg)
{
#ifdef DEBUG_INGRESS
	struct ingress_qdisc_data *p = PRIV(sch);
#endif
	DPRINTK("ingress_change(sch %p,[qdisc %p],classid %x,parent %x),"
		"arg 0x%lx\n", sch, p, classid, parent, *arg);
	DPRINTK("No effect. sch_ingress doesn't maintain classes at the moment");
	return 0;
}


static void ingress_walk(struct Qdisc *sch,struct qdisc_walker *walker)
{
#ifdef DEBUG_INGRESS
	struct ingress_qdisc_data *p = PRIV(sch);
#endif
	DPRINTK("ingress_walk(sch %p,[qdisc %p],walker %p)\n", sch, p, walker);
	DPRINTK("No effect. sch_ingress doesn't maintain classes at the moment");
}


static struct tcf_proto **ingress_find_tcf(struct Qdisc *sch,unsigned long cl)
{
	struct ingress_qdisc_data *p = PRIV(sch);

	return &p->filter_list;
}


/* --------------------------- Qdisc operations ---------------------------- */


static int ingress_enqueue(struct sk_buff *skb,struct Qdisc *sch)
{
	struct ingress_qdisc_data *p = PRIV(sch);
	struct tcf_result res;
	int result;

	D2PRINTK("ingress_enqueue(skb %p,sch %p,[qdisc %p])\n", skb, sch, p);
	result = tc_classify(skb, p->filter_list, &res);
	D2PRINTK("result %d class 0x%04x\n", result, res.classid);
	/*
	 * Unlike normal "enqueue" functions, ingress_enqueue returns a
	 * firewall FW_* code.
	 */
#ifdef CONFIG_NET_CLS_ACT
	sch->bstats.packets++;
	sch->bstats.bytes += skb->len;
	switch (result) {
		case TC_ACT_SHOT:
			result = TC_ACT_SHOT;
			sch->qstats.drops++;
			break;
		case TC_ACT_STOLEN:
		case TC_ACT_QUEUED:
			result = TC_ACT_STOLEN;
			break;
		case TC_ACT_RECLASSIFY:
		case TC_ACT_OK:
			skb->tc_index = TC_H_MIN(res.classid);
		default:
			result = TC_ACT_OK;
			break;
	}
#else
	D2PRINTK("Overriding result to ACCEPT\n");
	result = NF_ACCEPT;
	sch->bstats.packets++;
	sch->bstats.bytes += skb->len;
#endif

	return result;
}


static struct sk_buff *ingress_dequeue(struct Qdisc *sch)
{
/*
	struct ingress_qdisc_data *p = PRIV(sch);
	D2PRINTK("ingress_dequeue(sch %p,[qdisc %p])\n",sch,PRIV(p));
*/
	return NULL;
}


static int ingress_requeue(struct sk_buff *skb,struct Qdisc *sch)
{
/*
	struct ingress_qdisc_data *p = PRIV(sch);
	D2PRINTK("ingress_requeue(skb %p,sch %p,[qdisc %p])\n",skb,sch,PRIV(p));
*/
	return 0;
}

static unsigned int ingress_drop(struct Qdisc *sch)
{
#ifdef DEBUG_INGRESS
	struct ingress_qdisc_data *p = PRIV(sch);
#endif
	DPRINTK("ingress_drop(sch %p,[qdisc %p])\n", sch, p);
	return 0;
}

#ifndef CONFIG_NET_CLS_ACT
#ifdef CONFIG_NETFILTER
static unsigned int
ing_hook(unsigned int hook, struct sk_buff *skb,
			     const struct net_device *indev,
			     const struct net_device *outdev,
			     int (*okfn)(struct sk_buff *))
{

	struct Qdisc *q;
	struct net_device *dev = skb->dev;
	int fwres=NF_ACCEPT;

	DPRINTK("ing_hook: skb %s dev=%s len=%u\n",
		skb->sk ? "(owned)" : "(unowned)",
		skb->dev ? skb->dev->name : "(no dev)",
		skb->len);

	if (dev->qdisc_ingress) {
		spin_lock(&dev->ingress_lock);
		if ((q = dev->qdisc_ingress) != NULL)
			fwres = q->enqueue(skb, q);
		spin_unlock(&dev->ingress_lock);
	}

	return fwres;
}

/* after ipt_filter */
static struct nf_hook_ops ing_ops = {
	.hook           = ing_hook,
	.owner		= THIS_MODULE,
	.pf             = PF_INET,
	.hooknum        = NF_INET_PRE_ROUTING,
	.priority       = NF_IP_PRI_FILTER + 1,
};

static struct nf_hook_ops ing6_ops = {
	.hook           = ing_hook,
	.owner		= THIS_MODULE,
	.pf             = PF_INET6,
	.hooknum        = NF_INET_PRE_ROUTING,
	.priority       = NF_IP6_PRI_FILTER + 1,
};

#endif
#endif

static int ingress_init(struct Qdisc *sch,struct rtattr *opt)
{
	struct ingress_qdisc_data *p = PRIV(sch);

/* Make sure either netfilter or preferably CLS_ACT is
* compiled in */
#ifndef CONFIG_NET_CLS_ACT
#ifndef CONFIG_NETFILTER
	printk("You MUST compile classifier actions into the kernel\n");
	return -EINVAL;
#else
	printk("Ingress scheduler: Classifier actions prefered over netfilter\n");
#endif
#endif

#ifndef CONFIG_NET_CLS_ACT
#ifdef CONFIG_NETFILTER
	if (!nf_registered) {
		if (nf_register_hook(&ing_ops) < 0) {
			printk("ingress qdisc registration error \n");
			return -EINVAL;
		}
		nf_registered++;

		if (nf_register_hook(&ing6_ops) < 0) {
			printk("IPv6 ingress qdisc registration error, " \
			    "disabling IPv6 support.\n");
		} else
			nf_registered++;
	}
#endif
#endif

	DPRINTK("ingress_init(sch %p,[qdisc %p],opt %p)\n",sch,p,opt);
	p->q = &noop_qdisc;
	return 0;
}


static void ingress_reset(struct Qdisc *sch)
{
	struct ingress_qdisc_data *p = PRIV(sch);

	DPRINTK("ingress_reset(sch %p,[qdisc %p])\n", sch, p);

/*
#if 0
*/
/* for future use */
	qdisc_reset(p->q);
/*
#endif
*/
}

/* ------------------------------------------------------------- */


/* ------------------------------------------------------------- */

static void ingress_destroy(struct Qdisc *sch)
{
	struct ingress_qdisc_data *p = PRIV(sch);

	DPRINTK("ingress_destroy(sch %p,[qdisc %p])\n", sch, p);
	tcf_destroy_chain(p->filter_list);
#if 0
/* for future use */
	qdisc_destroy(p->q);
#endif
}


static int ingress_dump(struct Qdisc *sch, struct sk_buff *skb)
{
	unsigned char *b = skb_tail_pointer(skb);
	struct rtattr *rta;

	rta = (struct rtattr *) b;
	RTA_PUT(skb, TCA_OPTIONS, 0, NULL);
	rta->rta_len = skb_tail_pointer(skb) - b;
	return skb->len;

rtattr_failure:
	nlmsg_trim(skb, b);
	return -1;
}

static struct Qdisc_class_ops ingress_class_ops = {
	.graft		=	ingress_graft,
	.leaf		=	ingress_leaf,
	.get		=	ingress_get,
	.put		=	ingress_put,
	.change		=	ingress_change,
	.delete		=	NULL,
	.walk		=	ingress_walk,
	.tcf_chain	=	ingress_find_tcf,
	.bind_tcf	=	ingress_bind_filter,
	.unbind_tcf	=	ingress_put,
	.dump		=	NULL,
};

static struct Qdisc_ops ingress_qdisc_ops = {
	.next		=	NULL,
	.cl_ops		=	&ingress_class_ops,
	.id		=	"ingress",
	.priv_size	=	sizeof(struct ingress_qdisc_data),
	.enqueue	=	ingress_enqueue,
	.dequeue	=	ingress_dequeue,
	.requeue	=	ingress_requeue,
	.drop		=	ingress_drop,
	.init		=	ingress_init,
	.reset		=	ingress_reset,
	.destroy	=	ingress_destroy,
	.change		=	NULL,
	.dump		=	ingress_dump,
	.owner		=	THIS_MODULE,
};

static int __init ingress_module_init(void)
{
	int ret = 0;

	if ((ret = register_qdisc(&ingress_qdisc_ops)) < 0) {
		printk("Unable to register Ingress qdisc\n");
		return ret;
	}

	return ret;
}
static void __exit ingress_module_exit(void)
{
	unregister_qdisc(&ingress_qdisc_ops);
#ifndef CONFIG_NET_CLS_ACT
#ifdef CONFIG_NETFILTER
	if (nf_registered) {
		nf_unregister_hook(&ing_ops);
		if (nf_registered > 1)
			nf_unregister_hook(&ing6_ops);
	}
#endif
#endif
}
module_init(ingress_module_init)
module_exit(ingress_module_exit)
MODULE_LICENSE("GPL");
Commit	Line	Data
10297b99	1	/* net/sched/sch_ingress.c - Ingress qdisc
1da177e4 LT	2	* This program is free software; you can redistribute it and/or
	3	* modify it under the terms of the GNU General Public License
	4	* as published by the Free Software Foundation; either version
	5	* 2 of the License, or (at your option) any later version.
	6	*
	7	* Authors: Jamal Hadi Salim 1999
	8	*/
	9
1da177e4 LT	10	#include <linux/module.h>
1da177e4 LT	11	#include <linux/types.h>
0ba48053	12	#include <linux/list.h>
1da177e4	13	#include <linux/skbuff.h>
1da177e4 LT	14	#include <linux/rtnetlink.h>
	15	#include <linux/netfilter_ipv4.h>
	16	#include <linux/netfilter_ipv6.h>
	17	#include <linux/netfilter.h>
dc5fc579	18	#include <net/netlink.h>
1da177e4	19	#include <net/pkt_sched.h>
1da177e4 LT	20
	21
	22	#undef DEBUG_INGRESS
	23
	24	#ifdef DEBUG_INGRESS /* control */
	25	#define DPRINTK(format,args...) printk(KERN_DEBUG format,##args)
	26	#else
	27	#define DPRINTK(format,args...)
	28	#endif
	29
	30	#if 0 /* data */
	31	#define D2PRINTK(format,args...) printk(KERN_DEBUG format,##args)
	32	#else
	33	#define D2PRINTK(format,args...)
	34	#endif
	35
	36
	37	#define PRIV(sch) qdisc_priv(sch)
	38
	39
	40	/* Thanks to Doron Oz for this hack
	41	*/
	42	#ifndef CONFIG_NET_CLS_ACT
	43	#ifdef CONFIG_NETFILTER
10297b99	44	static int nf_registered;
1da177e4 LT	45	#endif
	46	#endif
	47
	48	struct ingress_qdisc_data {
	49	struct Qdisc *q;
	50	struct tcf_proto *filter_list;
	51	};
	52
	53
	54	/* ------------------------- Class/flow operations ------------------------- */
	55
	56
	57	static int ingress_graft(struct Qdisc *sch,unsigned long arg,
	58	struct Qdisc new,struct Qdisc *old)
	59	{
	60	#ifdef DEBUG_INGRESS
	61	struct ingress_qdisc_data *p = PRIV(sch);
	62	#endif
	63
	64	DPRINTK("ingress_graft(sch %p,[qdisc %p],new %p,old %p)\n",
	65	sch, p, new, old);
	66	DPRINTK("\n ingress_graft: You cannot add qdiscs to classes");
10297b99	67	return 1;
1da177e4 LT	68	}
	69
	70
	71	static struct Qdisc ingress_leaf(struct Qdisc sch, unsigned long arg)
	72	{
	73	return NULL;
	74	}
	75
	76
	77	static unsigned long ingress_get(struct Qdisc *sch,u32 classid)
	78	{
	79	#ifdef DEBUG_INGRESS
	80	struct ingress_qdisc_data *p = PRIV(sch);
	81	#endif
	82	DPRINTK("ingress_get(sch %p,[qdisc %p],classid %x)\n", sch, p, classid);
	83	return TC_H_MIN(classid) + 1;
	84	}
	85
	86
	87	static unsigned long ingress_bind_filter(struct Qdisc *sch,
	88	unsigned long parent, u32 classid)
	89	{
	90	return ingress_get(sch, classid);
	91	}
	92
	93
	94	static void ingress_put(struct Qdisc *sch, unsigned long cl)
	95	{
	96	}
	97
	98
	99	static int ingress_change(struct Qdisc *sch, u32 classid, u32 parent,
	100	struct rtattr *tca, unsigned long arg)
	101	{
	102	#ifdef DEBUG_INGRESS
	103	struct ingress_qdisc_data *p = PRIV(sch);
	104	#endif
	105	DPRINTK("ingress_change(sch %p,[qdisc %p],classid %x,parent %x),"
	106	"arg 0x%lx\n", sch, p, classid, parent, *arg);
	107	DPRINTK("No effect. sch_ingress doesn't maintain classes at the moment");
	108	return 0;
	109	}
	110
	111
	112
	113	static void ingress_walk(struct Qdisc sch,struct qdisc_walker walker)
	114	{
	115	#ifdef DEBUG_INGRESS
	116	struct ingress_qdisc_data *p = PRIV(sch);
	117	#endif
	118	DPRINTK("ingress_walk(sch %p,[qdisc %p],walker %p)\n", sch, p, walker);
	119	DPRINTK("No effect. sch_ingress doesn't maintain classes at the moment");
	120	}
	121
	122
	123	static struct tcf_proto *ingress_find_tcf(struct Qdisc sch,unsigned long cl)
	124	{
	125	struct ingress_qdisc_data *p = PRIV(sch);
	126
	127	return &p->filter_list;
	128	}
	129
	130
	131	/* --------------------------- Qdisc operations ---------------------------- */
132
133
134	static int ingress_enqueue(struct sk_buff skb,struct Qdisc sch)
135	{
136	struct ingress_qdisc_data *p = PRIV(sch);
137	struct tcf_result res;
138	int result;
139
140	D2PRINTK("ingress_enqueue(skb %p,sch %p,[qdisc %p])\n", skb, sch, p);
141	result = tc_classify(skb, p->filter_list, &res);
142	D2PRINTK("result %d class 0x%04x\n", result, res.classid);
143	/*
144	* Unlike normal "enqueue" functions, ingress_enqueue returns a
145	* firewall FW_* code.
146	*/
147	#ifdef CONFIG_NET_CLS_ACT
148	sch->bstats.packets++;
149	sch->bstats.bytes += skb->len;
150	switch (result) {
151	case TC_ACT_SHOT:
152	result = TC_ACT_SHOT;
153	sch->qstats.drops++;
154	break;
155	case TC_ACT_STOLEN:
156	case TC_ACT_QUEUED:
157	result = TC_ACT_STOLEN;
158	break;
10297b99	159	case TC_ACT_RECLASSIFY:
1da177e4	160	case TC_ACT_OK:
1da177e4	161	skb->tc_index = TC_H_MIN(res.classid);
bdba91ec	162	default:
1da177e4 LT	163	result = TC_ACT_OK;
1da177e4 LT	164	break;
3ff50b79	165	}
1da177e4 LT	166	#else
	167	D2PRINTK("Overriding result to ACCEPT\n");
	168	result = NF_ACCEPT;
	169	sch->bstats.packets++;
	170	sch->bstats.bytes += skb->len;
1da177e4 LT	171	#endif
	172
	173	return result;
	174	}
	175
	176
	177	static struct sk_buff ingress_dequeue(struct Qdisc sch)
	178	{
	179	/*
	180	struct ingress_qdisc_data *p = PRIV(sch);
	181	D2PRINTK("ingress_dequeue(sch %p,[qdisc %p])\n",sch,PRIV(p));
	182	*/
	183	return NULL;
	184	}
	185
	186
	187	static int ingress_requeue(struct sk_buff skb,struct Qdisc sch)
	188	{
	189	/*
	190	struct ingress_qdisc_data *p = PRIV(sch);
	191	D2PRINTK("ingress_requeue(skb %p,sch %p,[qdisc %p])\n",skb,sch,PRIV(p));
	192	*/
	193	return 0;
	194	}
	195
	196	static unsigned int ingress_drop(struct Qdisc *sch)
	197	{
	198	#ifdef DEBUG_INGRESS
	199	struct ingress_qdisc_data *p = PRIV(sch);
	200	#endif
	201	DPRINTK("ingress_drop(sch %p,[qdisc %p])\n", sch, p);
	202	return 0;
	203	}
	204
	205	#ifndef CONFIG_NET_CLS_ACT
	206	#ifdef CONFIG_NETFILTER
	207	static unsigned int
3db05fea	208	ing_hook(unsigned int hook, struct sk_buff *skb,
10297b99 YH	209	const struct net_device *indev,
	210	const struct net_device *outdev,
	211	int (okfn)(struct sk_buff ))
1da177e4	212	{
10297b99	213
1da177e4	214	struct Qdisc *q;
10297b99	215	struct net_device *dev = skb->dev;
1da177e4 LT	216	int fwres=NF_ACCEPT;
	217
	218	DPRINTK("ing_hook: skb %s dev=%s len=%u\n",
	219	skb->sk ? "(owned)" : "(unowned)",
3db05fea	220	skb->dev ? skb->dev->name : "(no dev)",
1da177e4 LT	221	skb->len);
1da177e4 LT	222
1da177e4	223	if (dev->qdisc_ingress) {
fd44de7c	224	spin_lock(&dev->ingress_lock);
1da177e4 LT	225	if ((q = dev->qdisc_ingress) != NULL)
1da177e4 LT	226	fwres = q->enqueue(skb, q);
fd44de7c	227	spin_unlock(&dev->ingress_lock);
10297b99 YH	228	}
10297b99 YH	229
1da177e4 LT	230	return fwres;
	231	}
	232
	233	/* after ipt_filter */
	234	static struct nf_hook_ops ing_ops = {
	235	.hook = ing_hook,
	236	.owner = THIS_MODULE,
	237	.pf = PF_INET,
6e23ae2a	238	.hooknum = NF_INET_PRE_ROUTING,
1da177e4 LT	239	.priority = NF_IP_PRI_FILTER + 1,
	240	};
	241
	242	static struct nf_hook_ops ing6_ops = {
	243	.hook = ing_hook,
	244	.owner = THIS_MODULE,
	245	.pf = PF_INET6,
6e23ae2a	246	.hooknum = NF_INET_PRE_ROUTING,
1da177e4 LT	247	.priority = NF_IP6_PRI_FILTER + 1,
	248	};
	249
	250	#endif
	251	#endif
	252
	253	static int ingress_init(struct Qdisc sch,struct rtattr opt)
	254	{
	255	struct ingress_qdisc_data *p = PRIV(sch);
	256
	257	/* Make sure either netfilter or preferably CLS_ACT is
	258	* compiled in */
	259	#ifndef CONFIG_NET_CLS_ACT
	260	#ifndef CONFIG_NETFILTER
	261	printk("You MUST compile classifier actions into the kernel\n");
	262	return -EINVAL;
	263	#else
	264	printk("Ingress scheduler: Classifier actions prefered over netfilter\n");
	265	#endif
	266	#endif
10297b99	267
1da177e4 LT	268	#ifndef CONFIG_NET_CLS_ACT
	269	#ifdef CONFIG_NETFILTER
	270	if (!nf_registered) {
	271	if (nf_register_hook(&ing_ops) < 0) {
	272	printk("ingress qdisc registration error \n");
	273	return -EINVAL;
	274	}
	275	nf_registered++;
	276
	277	if (nf_register_hook(&ing6_ops) < 0) {
	278	printk("IPv6 ingress qdisc registration error, " \
	279	"disabling IPv6 support.\n");
	280	} else
	281	nf_registered++;
	282	}
	283	#endif
	284	#endif
	285
	286	DPRINTK("ingress_init(sch %p,[qdisc %p],opt %p)\n",sch,p,opt);
	287	p->q = &noop_qdisc;
	288	return 0;
	289	}
	290
	291
	292	static void ingress_reset(struct Qdisc *sch)
	293	{
	294	struct ingress_qdisc_data *p = PRIV(sch);
	295
	296	DPRINTK("ingress_reset(sch %p,[qdisc %p])\n", sch, p);
	297
	298	/*
	299	#if 0
	300	*/
	301	/* for future use */
	302	qdisc_reset(p->q);
	303	/*
	304	#endif
	305	*/
	306	}
	307
	308	/* ------------------------------------------------------------- */
	309
	310
	311	/* ------------------------------------------------------------- */
	312
	313	static void ingress_destroy(struct Qdisc *sch)
	314	{
	315	struct ingress_qdisc_data *p = PRIV(sch);
1da177e4 LT	316
1da177e4 LT	317	DPRINTK("ingress_destroy(sch %p,[qdisc %p])\n", sch, p);
a48b5a61	318	tcf_destroy_chain(p->filter_list);
1da177e4 LT	319	#if 0
	320	/* for future use */
	321	qdisc_destroy(p->q);
	322	#endif
	323	}
	324
	325
	326	static int ingress_dump(struct Qdisc sch, struct sk_buff skb)
	327	{
27a884dc	328	unsigned char *b = skb_tail_pointer(skb);
1da177e4 LT	329	struct rtattr *rta;
	330
	331	rta = (struct rtattr *) b;
	332	RTA_PUT(skb, TCA_OPTIONS, 0, NULL);
27a884dc	333	rta->rta_len = skb_tail_pointer(skb) - b;
1da177e4 LT	334	return skb->len;
	335
	336	rtattr_failure:
dc5fc579	337	nlmsg_trim(skb, b);
1da177e4 LT	338	return -1;
	339	}
	340
	341	static struct Qdisc_class_ops ingress_class_ops = {
	342	.graft = ingress_graft,
	343	.leaf = ingress_leaf,
	344	.get = ingress_get,
	345	.put = ingress_put,
	346	.change = ingress_change,
	347	.delete = NULL,
	348	.walk = ingress_walk,
	349	.tcf_chain = ingress_find_tcf,
	350	.bind_tcf = ingress_bind_filter,
	351	.unbind_tcf = ingress_put,
	352	.dump = NULL,
	353	};
	354
	355	static struct Qdisc_ops ingress_qdisc_ops = {
	356	.next = NULL,
	357	.cl_ops = &ingress_class_ops,
	358	.id = "ingress",
	359	.priv_size = sizeof(struct ingress_qdisc_data),
	360	.enqueue = ingress_enqueue,
	361	.dequeue = ingress_dequeue,
	362	.requeue = ingress_requeue,
	363	.drop = ingress_drop,
	364	.init = ingress_init,
	365	.reset = ingress_reset,
	366	.destroy = ingress_destroy,
	367	.change = NULL,
	368	.dump = ingress_dump,
	369	.owner = THIS_MODULE,
	370	};
	371
	372	static int __init ingress_module_init(void)
	373	{
	374	int ret = 0;
	375
	376	if ((ret = register_qdisc(&ingress_qdisc_ops)) < 0) {
	377	printk("Unable to register Ingress qdisc\n");
	378	return ret;
	379	}
	380
	381	return ret;
	382	}
10297b99	383	static void __exit ingress_module_exit(void)
1da177e4 LT	384	{
	385	unregister_qdisc(&ingress_qdisc_ops);
	386	#ifndef CONFIG_NET_CLS_ACT
	387	#ifdef CONFIG_NETFILTER
	388	if (nf_registered) {
	389	nf_unregister_hook(&ing_ops);
	390	if (nf_registered > 1)
	391	nf_unregister_hook(&ing6_ops);
	392	}
	393	#endif
	394	#endif
	395	}
	396	module_init(ingress_module_init)
	397	module_exit(ingress_module_exit)
	398	MODULE_LICENSE("GPL");