2 * This is a module which is used for queueing packets and communicating with
3 * userspace via nfetlink.
5 * (C) 2005 by Harald Welte <laforge@netfilter.org>
7 * Based on the old ipv4-only ip_queue.c:
8 * (C) 2000-2002 James Morris <jmorris@intercode.com.au>
9 * (C) 2003-2005 Netfilter Core Team <coreteam@netfilter.org>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
16 #include <linux/module.h>
17 #include <linux/skbuff.h>
18 #include <linux/init.h>
19 #include <linux/spinlock.h>
20 #include <linux/notifier.h>
21 #include <linux/netdevice.h>
22 #include <linux/netfilter.h>
23 #include <linux/proc_fs.h>
24 #include <linux/netfilter_ipv4.h>
25 #include <linux/netfilter_ipv6.h>
26 #include <linux/netfilter/nfnetlink.h>
27 #include <linux/netfilter/nfnetlink_queue.h>
28 #include <linux/list.h>
30 #include <net/netfilter/nf_queue.h>
32 #include <asm/atomic.h>
34 #ifdef CONFIG_BRIDGE_NETFILTER
35 #include "../bridge/br_private.h"
38 #define NFQNL_QMAX_DEFAULT 1024
40 struct nfqnl_instance {
41 struct hlist_node hlist; /* global list of queues */
45 unsigned int queue_maxlen;
46 unsigned int copy_range;
47 unsigned int queue_total;
48 unsigned int queue_dropped;
49 unsigned int queue_user_dropped;
51 unsigned int id_sequence; /* 'sequence' of pkt ids */
53 u_int16_t queue_num; /* number of this queue */
58 struct list_head queue_list; /* packets in queue */
61 typedef int (*nfqnl_cmpfn)(struct nf_queue_entry *, unsigned long);
63 static DEFINE_SPINLOCK(instances_lock);
65 #define INSTANCE_BUCKETS 16
66 static struct hlist_head instance_table[INSTANCE_BUCKETS] __read_mostly;
68 static inline u_int8_t instance_hashfn(u_int16_t queue_num)
70 return ((queue_num >> 8) | queue_num) % INSTANCE_BUCKETS;
73 static struct nfqnl_instance *
74 instance_lookup(u_int16_t queue_num)
76 struct hlist_head *head;
77 struct hlist_node *pos;
78 struct nfqnl_instance *inst;
80 head = &instance_table[instance_hashfn(queue_num)];
81 hlist_for_each_entry_rcu(inst, pos, head, hlist) {
82 if (inst->queue_num == queue_num)
88 static struct nfqnl_instance *
89 instance_create(u_int16_t queue_num, int pid)
91 struct nfqnl_instance *inst = NULL;
94 spin_lock(&instances_lock);
95 if (instance_lookup(queue_num))
98 inst = kzalloc(sizeof(*inst), GFP_ATOMIC);
102 inst->queue_num = queue_num;
103 inst->peer_pid = pid;
104 inst->queue_maxlen = NFQNL_QMAX_DEFAULT;
105 inst->copy_range = 0xfffff;
106 inst->copy_mode = NFQNL_COPY_NONE;
107 spin_lock_init(&inst->lock);
108 INIT_LIST_HEAD(&inst->queue_list);
109 INIT_RCU_HEAD(&inst->rcu);
111 if (!try_module_get(THIS_MODULE))
114 h = instance_hashfn(queue_num);
115 hlist_add_head_rcu(&inst->hlist, &instance_table[h]);
117 spin_unlock(&instances_lock);
124 spin_unlock(&instances_lock);
128 static void nfqnl_flush(struct nfqnl_instance *queue, nfqnl_cmpfn cmpfn,
132 instance_destroy_rcu(struct rcu_head *head)
134 struct nfqnl_instance *inst = container_of(head, struct nfqnl_instance,
137 nfqnl_flush(inst, NULL, 0);
139 module_put(THIS_MODULE);
143 __instance_destroy(struct nfqnl_instance *inst)
145 hlist_del_rcu(&inst->hlist);
146 call_rcu(&inst->rcu, instance_destroy_rcu);
150 instance_destroy(struct nfqnl_instance *inst)
152 spin_lock(&instances_lock);
153 __instance_destroy(inst);
154 spin_unlock(&instances_lock);
158 __enqueue_entry(struct nfqnl_instance *queue, struct nf_queue_entry *entry)
160 list_add_tail(&entry->list, &queue->queue_list);
161 queue->queue_total++;
164 static struct nf_queue_entry *
165 find_dequeue_entry(struct nfqnl_instance *queue, unsigned int id)
167 struct nf_queue_entry *entry = NULL, *i;
169 spin_lock_bh(&queue->lock);
171 list_for_each_entry(i, &queue->queue_list, list) {
179 list_del(&entry->list);
180 queue->queue_total--;
183 spin_unlock_bh(&queue->lock);
189 nfqnl_flush(struct nfqnl_instance *queue, nfqnl_cmpfn cmpfn, unsigned long data)
191 struct nf_queue_entry *entry, *next;
193 spin_lock_bh(&queue->lock);
194 list_for_each_entry_safe(entry, next, &queue->queue_list, list) {
195 if (!cmpfn || cmpfn(entry, data)) {
196 list_del(&entry->list);
197 queue->queue_total--;
198 nf_reinject(entry, NF_DROP);
201 spin_unlock_bh(&queue->lock);
204 static struct sk_buff *
205 nfqnl_build_packet_message(struct nfqnl_instance *queue,
206 struct nf_queue_entry *entry, int *errp)
208 sk_buff_data_t old_tail;
212 struct nfqnl_msg_packet_hdr pmsg;
213 struct nlmsghdr *nlh;
214 struct nfgenmsg *nfmsg;
215 struct sk_buff *entskb = entry->skb;
216 struct net_device *indev;
217 struct net_device *outdev;
219 size = NLMSG_ALIGN(sizeof(struct nfgenmsg))
220 + nla_total_size(sizeof(struct nfqnl_msg_packet_hdr))
221 + nla_total_size(sizeof(u_int32_t)) /* ifindex */
222 + nla_total_size(sizeof(u_int32_t)) /* ifindex */
223 #ifdef CONFIG_BRIDGE_NETFILTER
224 + nla_total_size(sizeof(u_int32_t)) /* ifindex */
225 + nla_total_size(sizeof(u_int32_t)) /* ifindex */
227 + nla_total_size(sizeof(u_int32_t)) /* mark */
228 + nla_total_size(sizeof(struct nfqnl_msg_packet_hw))
229 + nla_total_size(sizeof(struct nfqnl_msg_packet_timestamp));
231 outdev = entry->outdev;
233 spin_lock_bh(&queue->lock);
235 switch ((enum nfqnl_config_mode)queue->copy_mode) {
236 case NFQNL_COPY_META:
237 case NFQNL_COPY_NONE:
241 case NFQNL_COPY_PACKET:
242 if ((entskb->ip_summed == CHECKSUM_PARTIAL ||
243 entskb->ip_summed == CHECKSUM_COMPLETE) &&
244 (*errp = skb_checksum_help(entskb))) {
245 spin_unlock_bh(&queue->lock);
248 if (queue->copy_range == 0
249 || queue->copy_range > entskb->len)
250 data_len = entskb->len;
252 data_len = queue->copy_range;
254 size += nla_total_size(data_len);
258 entry->id = queue->id_sequence++;
260 spin_unlock_bh(&queue->lock);
262 skb = alloc_skb(size, GFP_ATOMIC);
266 old_tail = skb->tail;
267 nlh = NLMSG_PUT(skb, 0, 0,
268 NFNL_SUBSYS_QUEUE << 8 | NFQNL_MSG_PACKET,
269 sizeof(struct nfgenmsg));
270 nfmsg = NLMSG_DATA(nlh);
271 nfmsg->nfgen_family = entry->pf;
272 nfmsg->version = NFNETLINK_V0;
273 nfmsg->res_id = htons(queue->queue_num);
275 pmsg.packet_id = htonl(entry->id);
276 pmsg.hw_protocol = entskb->protocol;
277 pmsg.hook = entry->hook;
279 NLA_PUT(skb, NFQA_PACKET_HDR, sizeof(pmsg), &pmsg);
281 indev = entry->indev;
283 #ifndef CONFIG_BRIDGE_NETFILTER
284 NLA_PUT_BE32(skb, NFQA_IFINDEX_INDEV, htonl(indev->ifindex));
286 if (entry->pf == PF_BRIDGE) {
287 /* Case 1: indev is physical input device, we need to
288 * look for bridge group (when called from
289 * netfilter_bridge) */
290 NLA_PUT_BE32(skb, NFQA_IFINDEX_PHYSINDEV,
291 htonl(indev->ifindex));
292 /* this is the bridge group "brX" */
293 NLA_PUT_BE32(skb, NFQA_IFINDEX_INDEV,
294 htonl(indev->br_port->br->dev->ifindex));
296 /* Case 2: indev is bridge group, we need to look for
297 * physical device (when called from ipv4) */
298 NLA_PUT_BE32(skb, NFQA_IFINDEX_INDEV,
299 htonl(indev->ifindex));
300 if (entskb->nf_bridge && entskb->nf_bridge->physindev)
301 NLA_PUT_BE32(skb, NFQA_IFINDEX_PHYSINDEV,
302 htonl(entskb->nf_bridge->physindev->ifindex));
308 #ifndef CONFIG_BRIDGE_NETFILTER
309 NLA_PUT_BE32(skb, NFQA_IFINDEX_OUTDEV, htonl(outdev->ifindex));
311 if (entry->pf == PF_BRIDGE) {
312 /* Case 1: outdev is physical output device, we need to
313 * look for bridge group (when called from
314 * netfilter_bridge) */
315 NLA_PUT_BE32(skb, NFQA_IFINDEX_PHYSOUTDEV,
316 htonl(outdev->ifindex));
317 /* this is the bridge group "brX" */
318 NLA_PUT_BE32(skb, NFQA_IFINDEX_OUTDEV,
319 htonl(outdev->br_port->br->dev->ifindex));
321 /* Case 2: outdev is bridge group, we need to look for
322 * physical output device (when called from ipv4) */
323 NLA_PUT_BE32(skb, NFQA_IFINDEX_OUTDEV,
324 htonl(outdev->ifindex));
325 if (entskb->nf_bridge && entskb->nf_bridge->physoutdev)
326 NLA_PUT_BE32(skb, NFQA_IFINDEX_PHYSOUTDEV,
327 htonl(entskb->nf_bridge->physoutdev->ifindex));
333 NLA_PUT_BE32(skb, NFQA_MARK, htonl(entskb->mark));
335 if (indev && entskb->dev) {
336 struct nfqnl_msg_packet_hw phw;
337 int len = dev_parse_header(entskb, phw.hw_addr);
339 phw.hw_addrlen = htons(len);
340 NLA_PUT(skb, NFQA_HWADDR, sizeof(phw), &phw);
344 if (entskb->tstamp.tv64) {
345 struct nfqnl_msg_packet_timestamp ts;
346 struct timeval tv = ktime_to_timeval(entskb->tstamp);
347 ts.sec = cpu_to_be64(tv.tv_sec);
348 ts.usec = cpu_to_be64(tv.tv_usec);
350 NLA_PUT(skb, NFQA_TIMESTAMP, sizeof(ts), &ts);
355 int size = nla_attr_size(data_len);
357 if (skb_tailroom(skb) < nla_total_size(data_len)) {
358 printk(KERN_WARNING "nf_queue: no tailroom!\n");
362 nla = (struct nlattr *)skb_put(skb, nla_total_size(data_len));
363 nla->nla_type = NFQA_PAYLOAD;
366 if (skb_copy_bits(entskb, 0, nla_data(nla), data_len))
370 nlh->nlmsg_len = skb->tail - old_tail;
379 printk(KERN_ERR "nf_queue: error creating packet message\n");
384 nfqnl_enqueue_packet(struct nf_queue_entry *entry, unsigned int queuenum)
386 int status = -EINVAL;
387 struct sk_buff *nskb;
388 struct nfqnl_instance *queue;
390 /* rcu_read_lock()ed by nf_hook_slow() */
391 queue = instance_lookup(queuenum);
395 if (queue->copy_mode == NFQNL_COPY_NONE)
398 nskb = nfqnl_build_packet_message(queue, entry, &status);
402 spin_lock_bh(&queue->lock);
404 if (!queue->peer_pid)
405 goto err_out_free_nskb;
407 if (queue->queue_total >= queue->queue_maxlen) {
408 queue->queue_dropped++;
411 printk(KERN_WARNING "nf_queue: full at %d entries, "
412 "dropping packets(s). Dropped: %d\n",
413 queue->queue_total, queue->queue_dropped);
414 goto err_out_free_nskb;
417 /* nfnetlink_unicast will either free the nskb or add it to a socket */
418 status = nfnetlink_unicast(nskb, queue->peer_pid, MSG_DONTWAIT);
420 queue->queue_user_dropped++;
424 __enqueue_entry(queue, entry);
426 spin_unlock_bh(&queue->lock);
433 spin_unlock_bh(&queue->lock);
438 nfqnl_mangle(void *data, int data_len, struct nf_queue_entry *e)
443 diff = data_len - e->skb->len;
445 if (pskb_trim(e->skb, data_len))
447 } else if (diff > 0) {
448 if (data_len > 0xFFFF)
450 if (diff > skb_tailroom(e->skb)) {
451 err = pskb_expand_head(e->skb, 0,
452 diff - skb_tailroom(e->skb),
455 printk(KERN_WARNING "nf_queue: OOM "
456 "in mangle, dropping packet\n");
460 skb_put(e->skb, diff);
462 if (!skb_make_writable(e->skb, data_len))
464 skb_copy_to_linear_data(e->skb, data, data_len);
465 e->skb->ip_summed = CHECKSUM_NONE;
470 nfqnl_set_mode(struct nfqnl_instance *queue,
471 unsigned char mode, unsigned int range)
475 spin_lock_bh(&queue->lock);
477 case NFQNL_COPY_NONE:
478 case NFQNL_COPY_META:
479 queue->copy_mode = mode;
480 queue->copy_range = 0;
483 case NFQNL_COPY_PACKET:
484 queue->copy_mode = mode;
485 /* we're using struct nlattr which has 16bit nla_len */
487 queue->copy_range = 0xffff;
489 queue->copy_range = range;
496 spin_unlock_bh(&queue->lock);
502 dev_cmp(struct nf_queue_entry *entry, unsigned long ifindex)
505 if (entry->indev->ifindex == ifindex)
508 if (entry->outdev->ifindex == ifindex)
510 #ifdef CONFIG_BRIDGE_NETFILTER
511 if (entry->skb->nf_bridge) {
512 if (entry->skb->nf_bridge->physindev &&
513 entry->skb->nf_bridge->physindev->ifindex == ifindex)
515 if (entry->skb->nf_bridge->physoutdev &&
516 entry->skb->nf_bridge->physoutdev->ifindex == ifindex)
523 /* drop all packets with either indev or outdev == ifindex from all queue
526 nfqnl_dev_drop(int ifindex)
532 for (i = 0; i < INSTANCE_BUCKETS; i++) {
533 struct hlist_node *tmp;
534 struct nfqnl_instance *inst;
535 struct hlist_head *head = &instance_table[i];
537 hlist_for_each_entry_rcu(inst, tmp, head, hlist)
538 nfqnl_flush(inst, dev_cmp, ifindex);
544 #define RCV_SKB_FAIL(err) do { netlink_ack(skb, nlh, (err)); return; } while (0)
547 nfqnl_rcv_dev_event(struct notifier_block *this,
548 unsigned long event, void *ptr)
550 struct net_device *dev = ptr;
552 if (dev->nd_net != &init_net)
555 /* Drop any packets associated with the downed device */
556 if (event == NETDEV_DOWN)
557 nfqnl_dev_drop(dev->ifindex);
561 static struct notifier_block nfqnl_dev_notifier = {
562 .notifier_call = nfqnl_rcv_dev_event,
566 nfqnl_rcv_nl_event(struct notifier_block *this,
567 unsigned long event, void *ptr)
569 struct netlink_notify *n = ptr;
571 if (event == NETLINK_URELEASE &&
572 n->protocol == NETLINK_NETFILTER && n->pid) {
575 /* destroy all instances for this pid */
576 spin_lock(&instances_lock);
577 for (i = 0; i < INSTANCE_BUCKETS; i++) {
578 struct hlist_node *tmp, *t2;
579 struct nfqnl_instance *inst;
580 struct hlist_head *head = &instance_table[i];
582 hlist_for_each_entry_safe(inst, tmp, t2, head, hlist) {
583 if ((n->net == &init_net) &&
584 (n->pid == inst->peer_pid))
585 __instance_destroy(inst);
588 spin_unlock(&instances_lock);
593 static struct notifier_block nfqnl_rtnl_notifier = {
594 .notifier_call = nfqnl_rcv_nl_event,
597 static const struct nla_policy nfqa_verdict_policy[NFQA_MAX+1] = {
598 [NFQA_VERDICT_HDR] = { .len = sizeof(struct nfqnl_msg_verdict_hdr) },
599 [NFQA_MARK] = { .type = NLA_U32 },
600 [NFQA_PAYLOAD] = { .type = NLA_UNSPEC },
604 nfqnl_recv_verdict(struct sock *ctnl, struct sk_buff *skb,
605 struct nlmsghdr *nlh, struct nlattr *nfqa[])
607 struct nfgenmsg *nfmsg = NLMSG_DATA(nlh);
608 u_int16_t queue_num = ntohs(nfmsg->res_id);
610 struct nfqnl_msg_verdict_hdr *vhdr;
611 struct nfqnl_instance *queue;
612 unsigned int verdict;
613 struct nf_queue_entry *entry;
617 queue = instance_lookup(queue_num);
623 if (queue->peer_pid != NETLINK_CB(skb).pid) {
628 if (!nfqa[NFQA_VERDICT_HDR]) {
633 vhdr = nla_data(nfqa[NFQA_VERDICT_HDR]);
634 verdict = ntohl(vhdr->verdict);
636 if ((verdict & NF_VERDICT_MASK) > NF_MAX_VERDICT) {
641 entry = find_dequeue_entry(queue, ntohl(vhdr->id));
648 if (nfqa[NFQA_PAYLOAD]) {
649 if (nfqnl_mangle(nla_data(nfqa[NFQA_PAYLOAD]),
650 nla_len(nfqa[NFQA_PAYLOAD]), entry) < 0)
655 entry->skb->mark = ntohl(nla_get_be32(nfqa[NFQA_MARK]));
657 nf_reinject(entry, verdict);
666 nfqnl_recv_unsupp(struct sock *ctnl, struct sk_buff *skb,
667 struct nlmsghdr *nlh, struct nlattr *nfqa[])
672 static const struct nla_policy nfqa_cfg_policy[NFQA_CFG_MAX+1] = {
673 [NFQA_CFG_CMD] = { .len = sizeof(struct nfqnl_msg_config_cmd) },
674 [NFQA_CFG_PARAMS] = { .len = sizeof(struct nfqnl_msg_config_params) },
677 static const struct nf_queue_handler nfqh = {
679 .outfn = &nfqnl_enqueue_packet,
683 nfqnl_recv_config(struct sock *ctnl, struct sk_buff *skb,
684 struct nlmsghdr *nlh, struct nlattr *nfqa[])
686 struct nfgenmsg *nfmsg = NLMSG_DATA(nlh);
687 u_int16_t queue_num = ntohs(nfmsg->res_id);
688 struct nfqnl_instance *queue;
689 struct nfqnl_msg_config_cmd *cmd = NULL;
692 if (nfqa[NFQA_CFG_CMD]) {
693 cmd = nla_data(nfqa[NFQA_CFG_CMD]);
695 /* Commands without queue context - might sleep */
696 switch (cmd->command) {
697 case NFQNL_CFG_CMD_PF_BIND:
698 ret = nf_register_queue_handler(ntohs(cmd->pf),
701 case NFQNL_CFG_CMD_PF_UNBIND:
702 ret = nf_unregister_queue_handler(ntohs(cmd->pf),
714 queue = instance_lookup(queue_num);
715 if (queue && queue->peer_pid != NETLINK_CB(skb).pid) {
721 switch (cmd->command) {
722 case NFQNL_CFG_CMD_BIND:
727 queue = instance_create(queue_num, NETLINK_CB(skb).pid);
733 case NFQNL_CFG_CMD_UNBIND:
738 instance_destroy(queue);
740 case NFQNL_CFG_CMD_PF_BIND:
741 case NFQNL_CFG_CMD_PF_UNBIND:
749 if (nfqa[NFQA_CFG_PARAMS]) {
750 struct nfqnl_msg_config_params *params;
756 params = nla_data(nfqa[NFQA_CFG_PARAMS]);
757 nfqnl_set_mode(queue, params->copy_mode,
758 ntohl(params->copy_range));
761 if (nfqa[NFQA_CFG_QUEUE_MAXLEN]) {
762 __be32 *queue_maxlen;
768 queue_maxlen = nla_data(nfqa[NFQA_CFG_QUEUE_MAXLEN]);
769 spin_lock_bh(&queue->lock);
770 queue->queue_maxlen = ntohl(*queue_maxlen);
771 spin_unlock_bh(&queue->lock);
779 static const struct nfnl_callback nfqnl_cb[NFQNL_MSG_MAX] = {
780 [NFQNL_MSG_PACKET] = { .call = nfqnl_recv_unsupp,
781 .attr_count = NFQA_MAX, },
782 [NFQNL_MSG_VERDICT] = { .call = nfqnl_recv_verdict,
783 .attr_count = NFQA_MAX,
784 .policy = nfqa_verdict_policy },
785 [NFQNL_MSG_CONFIG] = { .call = nfqnl_recv_config,
786 .attr_count = NFQA_CFG_MAX,
787 .policy = nfqa_cfg_policy },
790 static const struct nfnetlink_subsystem nfqnl_subsys = {
792 .subsys_id = NFNL_SUBSYS_QUEUE,
793 .cb_count = NFQNL_MSG_MAX,
797 #ifdef CONFIG_PROC_FS
802 static struct hlist_node *get_first(struct seq_file *seq)
804 struct iter_state *st = seq->private;
809 for (st->bucket = 0; st->bucket < INSTANCE_BUCKETS; st->bucket++) {
810 if (!hlist_empty(&instance_table[st->bucket]))
811 return instance_table[st->bucket].first;
816 static struct hlist_node *get_next(struct seq_file *seq, struct hlist_node *h)
818 struct iter_state *st = seq->private;
822 if (++st->bucket >= INSTANCE_BUCKETS)
825 h = instance_table[st->bucket].first;
830 static struct hlist_node *get_idx(struct seq_file *seq, loff_t pos)
832 struct hlist_node *head;
833 head = get_first(seq);
836 while (pos && (head = get_next(seq, head)))
838 return pos ? NULL : head;
841 static void *seq_start(struct seq_file *seq, loff_t *pos)
843 spin_lock(&instances_lock);
844 return get_idx(seq, *pos);
847 static void *seq_next(struct seq_file *s, void *v, loff_t *pos)
850 return get_next(s, v);
853 static void seq_stop(struct seq_file *s, void *v)
855 spin_unlock(&instances_lock);
858 static int seq_show(struct seq_file *s, void *v)
860 const struct nfqnl_instance *inst = v;
862 return seq_printf(s, "%5d %6d %5d %1d %5d %5d %5d %8d %2d\n",
864 inst->peer_pid, inst->queue_total,
865 inst->copy_mode, inst->copy_range,
866 inst->queue_dropped, inst->queue_user_dropped,
867 inst->id_sequence, 1);
870 static const struct seq_operations nfqnl_seq_ops = {
877 static int nfqnl_open(struct inode *inode, struct file *file)
879 return seq_open_private(file, &nfqnl_seq_ops,
880 sizeof(struct iter_state));
883 static const struct file_operations nfqnl_file_ops = {
884 .owner = THIS_MODULE,
888 .release = seq_release_private,
893 static int __init nfnetlink_queue_init(void)
895 int i, status = -ENOMEM;
896 #ifdef CONFIG_PROC_FS
897 struct proc_dir_entry *proc_nfqueue;
900 for (i = 0; i < INSTANCE_BUCKETS; i++)
901 INIT_HLIST_HEAD(&instance_table[i]);
903 netlink_register_notifier(&nfqnl_rtnl_notifier);
904 status = nfnetlink_subsys_register(&nfqnl_subsys);
906 printk(KERN_ERR "nf_queue: failed to create netlink socket\n");
907 goto cleanup_netlink_notifier;
910 #ifdef CONFIG_PROC_FS
911 proc_nfqueue = create_proc_entry("nfnetlink_queue", 0440,
915 proc_nfqueue->proc_fops = &nfqnl_file_ops;
918 register_netdevice_notifier(&nfqnl_dev_notifier);
921 #ifdef CONFIG_PROC_FS
923 nfnetlink_subsys_unregister(&nfqnl_subsys);
925 cleanup_netlink_notifier:
926 netlink_unregister_notifier(&nfqnl_rtnl_notifier);
930 static void __exit nfnetlink_queue_fini(void)
932 nf_unregister_queue_handlers(&nfqh);
933 unregister_netdevice_notifier(&nfqnl_dev_notifier);
934 #ifdef CONFIG_PROC_FS
935 remove_proc_entry("nfnetlink_queue", proc_net_netfilter);
937 nfnetlink_subsys_unregister(&nfqnl_subsys);
938 netlink_unregister_notifier(&nfqnl_rtnl_notifier);
941 MODULE_DESCRIPTION("netfilter packet queue handler");
942 MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>");
943 MODULE_LICENSE("GPL");
944 MODULE_ALIAS_NFNL_SUBSYS(NFNL_SUBSYS_QUEUE);
946 module_init(nfnetlink_queue_init);
947 module_exit(nfnetlink_queue_fini);