[mirror_ubuntu-zesty-kernel.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[] __read_mostly = {
	{
		.hook           = ing_hook,
		.owner		= THIS_MODULE,
		.pf             = PF_INET,
		.hooknum        = NF_INET_PRE_ROUTING,
		.priority       = NF_IP_PRI_FILTER + 1,
	},
	{
		.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_hooks(ing_ops, ARRAY_SIZE(ing_ops)) < 0) {
			printk("ingress qdisc registration error \n");
			return -EINVAL;
		}
		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 const 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 __read_mostly = {
	.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_hooks(ing_ops, ARRAY_SIZE(ing_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 */
1999414a	234	static struct nf_hook_ops ing_ops[] __read_mostly = {
41c5b317 PM	235	{
	236	.hook = ing_hook,
	237	.owner = THIS_MODULE,
	238	.pf = PF_INET,
	239	.hooknum = NF_INET_PRE_ROUTING,
	240	.priority = NF_IP_PRI_FILTER + 1,
	241	},
	242	{
	243	.hook = ing_hook,
	244	.owner = THIS_MODULE,
	245	.pf = PF_INET6,
	246	.hooknum = NF_INET_PRE_ROUTING,
	247	.priority = NF_IP6_PRI_FILTER + 1,
	248	},
1da177e4 LT	249	};
	250
	251	#endif
	252	#endif
	253
	254	static int ingress_init(struct Qdisc sch,struct rtattr opt)
	255	{
	256	struct ingress_qdisc_data *p = PRIV(sch);
	257
	258	/* Make sure either netfilter or preferably CLS_ACT is
	259	* compiled in */
	260	#ifndef CONFIG_NET_CLS_ACT
	261	#ifndef CONFIG_NETFILTER
	262	printk("You MUST compile classifier actions into the kernel\n");
	263	return -EINVAL;
	264	#else
	265	printk("Ingress scheduler: Classifier actions prefered over netfilter\n");
	266	#endif
	267	#endif
10297b99	268
1da177e4 LT	269	#ifndef CONFIG_NET_CLS_ACT
	270	#ifdef CONFIG_NETFILTER
	271	if (!nf_registered) {
41c5b317	272	if (nf_register_hooks(ing_ops, ARRAY_SIZE(ing_ops)) < 0) {
1da177e4 LT	273	printk("ingress qdisc registration error \n");
	274	return -EINVAL;
	275	}
	276	nf_registered++;
1da177e4 LT	277	}
	278	#endif
	279	#endif
	280
	281	DPRINTK("ingress_init(sch %p,[qdisc %p],opt %p)\n",sch,p,opt);
	282	p->q = &noop_qdisc;
	283	return 0;
	284	}
	285
	286
	287	static void ingress_reset(struct Qdisc *sch)
	288	{
	289	struct ingress_qdisc_data *p = PRIV(sch);
	290
	291	DPRINTK("ingress_reset(sch %p,[qdisc %p])\n", sch, p);
	292
	293	/*
	294	#if 0
	295	*/
	296	/* for future use */
	297	qdisc_reset(p->q);
	298	/*
	299	#endif
	300	*/
	301	}
	302
	303	/* ------------------------------------------------------------- */
	304
	305
	306	/* ------------------------------------------------------------- */
	307
	308	static void ingress_destroy(struct Qdisc *sch)
	309	{
	310	struct ingress_qdisc_data *p = PRIV(sch);
1da177e4 LT	311
1da177e4 LT	312	DPRINTK("ingress_destroy(sch %p,[qdisc %p])\n", sch, p);
a48b5a61	313	tcf_destroy_chain(p->filter_list);
1da177e4 LT	314	#if 0
	315	/* for future use */
	316	qdisc_destroy(p->q);
	317	#endif
	318	}
	319
	320
	321	static int ingress_dump(struct Qdisc sch, struct sk_buff skb)
	322	{
27a884dc	323	unsigned char *b = skb_tail_pointer(skb);
1da177e4 LT	324	struct rtattr *rta;
	325
	326	rta = (struct rtattr *) b;
	327	RTA_PUT(skb, TCA_OPTIONS, 0, NULL);
27a884dc	328	rta->rta_len = skb_tail_pointer(skb) - b;
1da177e4 LT	329	return skb->len;
	330
	331	rtattr_failure:
dc5fc579	332	nlmsg_trim(skb, b);
1da177e4 LT	333	return -1;
	334	}
	335
20fea08b	336	static const struct Qdisc_class_ops ingress_class_ops = {
1da177e4 LT	337	.graft = ingress_graft,
	338	.leaf = ingress_leaf,
	339	.get = ingress_get,
	340	.put = ingress_put,
	341	.change = ingress_change,
	342	.delete = NULL,
	343	.walk = ingress_walk,
	344	.tcf_chain = ingress_find_tcf,
	345	.bind_tcf = ingress_bind_filter,
	346	.unbind_tcf = ingress_put,
	347	.dump = NULL,
	348	};
	349
20fea08b	350	static struct Qdisc_ops ingress_qdisc_ops __read_mostly = {
1da177e4 LT	351	.next = NULL,
	352	.cl_ops = &ingress_class_ops,
	353	.id = "ingress",
	354	.priv_size = sizeof(struct ingress_qdisc_data),
	355	.enqueue = ingress_enqueue,
	356	.dequeue = ingress_dequeue,
	357	.requeue = ingress_requeue,
	358	.drop = ingress_drop,
	359	.init = ingress_init,
	360	.reset = ingress_reset,
	361	.destroy = ingress_destroy,
	362	.change = NULL,
	363	.dump = ingress_dump,
	364	.owner = THIS_MODULE,
	365	};
	366
	367	static int __init ingress_module_init(void)
	368	{
	369	int ret = 0;
	370
	371	if ((ret = register_qdisc(&ingress_qdisc_ops)) < 0) {
	372	printk("Unable to register Ingress qdisc\n");
	373	return ret;
	374	}
	375
	376	return ret;
	377	}
10297b99	378	static void __exit ingress_module_exit(void)
1da177e4 LT	379	{
	380	unregister_qdisc(&ingress_qdisc_ops);
	381	#ifndef CONFIG_NET_CLS_ACT
	382	#ifdef CONFIG_NETFILTER
41c5b317 PM	383	if (nf_registered)
41c5b317 PM	384	nf_unregister_hooks(ing_ops, ARRAY_SIZE(ing_ops));
1da177e4 LT	385	#endif
	386	#endif
	387	}
	388	module_init(ingress_module_init)
	389	module_exit(ingress_module_exit)
	390	MODULE_LICENSE("GPL");