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[openwrt.git] / target / linux / generic-2.6 / patches / 150-netfilter_imq.patch
1 --- linux-2.6.20-original/drivers/net/imq.c 1970-01-01 02:00:00.000000000 +0200
2 +++ linux-2.6.20/drivers/net/imq.c 2007-02-12 23:55:04.000000000 +0200
3 @@ -0,0 +1,402 @@
4 +/*
5 + * Pseudo-driver for the intermediate queue device.
6 + *
7 + * This program is free software; you can redistribute it and/or
8 + * modify it under the terms of the GNU General Public License
9 + * as published by the Free Software Foundation; either version
10 + * 2 of the License, or (at your option) any later version.
11 + *
12 + * Authors: Patrick McHardy, <kaber@trash.net>
13 + *
14 + * The first version was written by Martin Devera, <devik@cdi.cz>
15 + *
16 + * Credits: Jan Rafaj <imq2t@cedric.vabo.cz>
17 + * - Update patch to 2.4.21
18 + * Sebastian Strollo <sstrollo@nortelnetworks.com>
19 + * - Fix "Dead-loop on netdevice imq"-issue
20 + * Marcel Sebek <sebek64@post.cz>
21 + * - Update to 2.6.2-rc1
22 + *
23 + * After some time of inactivity there is a group taking care
24 + * of IMQ again: http://www.linuximq.net
25 + *
26 + *
27 + * 2004/06/30 - New version of IMQ patch to kernels <=2.6.7 including
28 + * the following changes:
29 + *
30 + * - Correction of ipv6 support "+"s issue (Hasso Tepper)
31 + * - Correction of imq_init_devs() issue that resulted in
32 + * kernel OOPS unloading IMQ as module (Norbert Buchmuller)
33 + * - Addition of functionality to choose number of IMQ devices
34 + * during kernel config (Andre Correa)
35 + * - Addition of functionality to choose how IMQ hooks on
36 + * PRE and POSTROUTING (after or before NAT) (Andre Correa)
37 + * - Cosmetic corrections (Norbert Buchmuller) (Andre Correa)
38 + *
39 + *
40 + * 2005/12/16 - IMQ versions between 2.6.7 and 2.6.13 were
41 + * released with almost no problems. 2.6.14-x was released
42 + * with some important changes: nfcache was removed; After
43 + * some weeks of trouble we figured out that some IMQ fields
44 + * in skb were missing in skbuff.c - skb_clone and copy_skb_header.
45 + * These functions are correctly patched by this new patch version.
46 + *
47 + * Thanks for all who helped to figure out all the problems with
48 + * 2.6.14.x: Patrick McHardy, Rune Kock, VeNoMouS, Max CtRiX,
49 + * Kevin Shanahan, Richard Lucassen, Valery Dachev (hopefully
50 + * I didn't forget anybody). I apologize again for my lack of time.
51 + *
52 + * More info at: http://www.linuximq.net/ (Andre Correa)
53 + */
54 +
55 +#include <linux/module.h>
56 +#include <linux/kernel.h>
57 +#include <linux/moduleparam.h>
58 +#include <linux/skbuff.h>
59 +#include <linux/netdevice.h>
60 +#include <linux/rtnetlink.h>
61 +#include <linux/if_arp.h>
62 +#include <linux/netfilter.h>
63 +#include <linux/netfilter_ipv4.h>
64 +#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
65 + #include <linux/netfilter_ipv6.h>
66 +#endif
67 +#include <linux/imq.h>
68 +#include <net/pkt_sched.h>
69 +
70 +extern int qdisc_restart1(struct net_device *dev);
71 +
72 +static nf_hookfn imq_nf_hook;
73 +
74 +static struct nf_hook_ops imq_ingress_ipv4 = {
75 + .hook = imq_nf_hook,
76 + .owner = THIS_MODULE,
77 + .pf = PF_INET,
78 + .hooknum = NF_IP_PRE_ROUTING,
79 +#if defined(CONFIG_IMQ_BEHAVIOR_BA) || defined(CONFIG_IMQ_BEHAVIOR_BB)
80 + .priority = NF_IP_PRI_MANGLE + 1
81 +#else
82 + .priority = NF_IP_PRI_NAT_DST + 1
83 +#endif
84 +};
85 +
86 +static struct nf_hook_ops imq_egress_ipv4 = {
87 + .hook = imq_nf_hook,
88 + .owner = THIS_MODULE,
89 + .pf = PF_INET,
90 + .hooknum = NF_IP_POST_ROUTING,
91 +#if defined(CONFIG_IMQ_BEHAVIOR_AA) || defined(CONFIG_IMQ_BEHAVIOR_BA)
92 + .priority = NF_IP_PRI_LAST
93 +#else
94 + .priority = NF_IP_PRI_NAT_SRC - 1
95 +#endif
96 +};
97 +
98 +#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
99 +static struct nf_hook_ops imq_ingress_ipv6 = {
100 + .hook = imq_nf_hook,
101 + .owner = THIS_MODULE,
102 + .pf = PF_INET6,
103 + .hooknum = NF_IP6_PRE_ROUTING,
104 +#if defined(CONFIG_IMQ_BEHAVIOR_BA) || defined(CONFIG_IMQ_BEHAVIOR_BB)
105 + .priority = NF_IP6_PRI_MANGLE + 1
106 +#else
107 + .priority = NF_IP6_PRI_NAT_DST + 1
108 +#endif
109 +};
110 +
111 +static struct nf_hook_ops imq_egress_ipv6 = {
112 + .hook = imq_nf_hook,
113 + .owner = THIS_MODULE,
114 + .pf = PF_INET6,
115 + .hooknum = NF_IP6_POST_ROUTING,
116 +#if defined(CONFIG_IMQ_BEHAVIOR_AA) || defined(CONFIG_IMQ_BEHAVIOR_BA)
117 + .priority = NF_IP6_PRI_LAST
118 +#else
119 + .priority = NF_IP6_PRI_NAT_SRC - 1
120 +#endif
121 +};
122 +#endif
123 +
124 +#if defined(CONFIG_IMQ_NUM_DEVS)
125 +static unsigned int numdevs = CONFIG_IMQ_NUM_DEVS;
126 +#else
127 +static unsigned int numdevs = 2;
128 +#endif
129 +
130 +static struct net_device *imq_devs;
131 +
132 +static struct net_device_stats *imq_get_stats(struct net_device *dev)
133 +{
134 + return (struct net_device_stats *)dev->priv;
135 +}
136 +
137 +/* called for packets kfree'd in qdiscs at places other than enqueue */
138 +static void imq_skb_destructor(struct sk_buff *skb)
139 +{
140 + struct nf_info *info = skb->nf_info;
141 +
142 + if (info) {
143 + if (info->indev)
144 + dev_put(info->indev);
145 + if (info->outdev)
146 + dev_put(info->outdev);
147 + kfree(info);
148 + }
149 +}
150 +
151 +static int imq_dev_xmit(struct sk_buff *skb, struct net_device *dev)
152 +{
153 + struct net_device_stats *stats = (struct net_device_stats*) dev->priv;
154 +
155 + stats->tx_bytes += skb->len;
156 + stats->tx_packets++;
157 +
158 + skb->imq_flags = 0;
159 + skb->destructor = NULL;
160 +
161 + dev->trans_start = jiffies;
162 + nf_reinject(skb, skb->nf_info, NF_ACCEPT);
163 + return 0;
164 +}
165 +
166 +static int imq_nf_queue(struct sk_buff *skb, struct nf_info *info, unsigned queue_num, void *data)
167 +{
168 + struct net_device *dev;
169 + struct net_device_stats *stats;
170 + struct sk_buff *skb2 = NULL;
171 + struct Qdisc *q;
172 + unsigned int index = skb->imq_flags&IMQ_F_IFMASK;
173 + int ret = -1;
174 +
175 + if (index > numdevs)
176 + return -1;
177 +
178 + dev = imq_devs + index;
179 + if (!(dev->flags & IFF_UP)) {
180 + skb->imq_flags = 0;
181 + nf_reinject(skb, info, NF_ACCEPT);
182 + return 0;
183 + }
184 + dev->last_rx = jiffies;
185 +
186 + if (skb->destructor) {
187 + skb2 = skb;
188 + skb = skb_clone(skb, GFP_ATOMIC);
189 + if (!skb)
190 + return -1;
191 + }
192 + skb->nf_info = info;
193 +
194 + stats = (struct net_device_stats *)dev->priv;
195 + stats->rx_bytes+= skb->len;
196 + stats->rx_packets++;
197 +
198 + spin_lock_bh(&dev->queue_lock);
199 + q = dev->qdisc;
200 + if (q->enqueue) {
201 + q->enqueue(skb_get(skb), q);
202 + if (skb_shared(skb)) {
203 + skb->destructor = imq_skb_destructor;
204 + kfree_skb(skb);
205 + ret = 0;
206 + }
207 + }
208 + if (spin_is_locked(&dev->_xmit_lock))
209 + netif_schedule(dev);
210 + else
211 + while (!netif_queue_stopped(dev) && qdisc_restart1(dev) < 0)
212 + /* NOTHING */;
213 +
214 + spin_unlock_bh(&dev->queue_lock);
215 +
216 + if (skb2)
217 + kfree_skb(ret ? skb : skb2);
218 +
219 + return ret;
220 +}
221 +
222 +static struct nf_queue_handler nfqh = {
223 + .name = "imq",
224 + .outfn = imq_nf_queue,
225 +};
226 +
227 +static unsigned int imq_nf_hook(unsigned int hook, struct sk_buff **pskb,
228 + const struct net_device *indev,
229 + const struct net_device *outdev,
230 + int (*okfn)(struct sk_buff *))
231 +{
232 + if ((*pskb)->imq_flags & IMQ_F_ENQUEUE)
233 + return NF_QUEUE;
234 +
235 + return NF_ACCEPT;
236 +}
237 +
238 +
239 +static int __init imq_init_hooks(void)
240 +{
241 + int err;
242 +
243 + err = nf_register_queue_handler(PF_INET, &nfqh);
244 + if (err > 0)
245 + goto err1;
246 + if ((err = nf_register_hook(&imq_ingress_ipv4)))
247 + goto err2;
248 + if ((err = nf_register_hook(&imq_egress_ipv4)))
249 + goto err3;
250 +#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
251 + if ((err = nf_register_queue_handler(PF_INET6, &nfqh)))
252 + goto err4;
253 + if ((err = nf_register_hook(&imq_ingress_ipv6)))
254 + goto err5;
255 + if ((err = nf_register_hook(&imq_egress_ipv6)))
256 + goto err6;
257 +#endif
258 +
259 + return 0;
260 +
261 +#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
262 +err6:
263 + nf_unregister_hook(&imq_ingress_ipv6);
264 +err5:
265 + nf_unregister_queue_handler(PF_INET6);
266 +err4:
267 + nf_unregister_hook(&imq_egress_ipv6);
268 +#endif
269 +err3:
270 + nf_unregister_hook(&imq_ingress_ipv4);
271 +err2:
272 + nf_unregister_queue_handler(PF_INET);
273 +err1:
274 + return err;
275 +}
276 +
277 +static void __exit imq_unhook(void)
278 +{
279 + nf_unregister_hook(&imq_ingress_ipv4);
280 + nf_unregister_hook(&imq_egress_ipv4);
281 + nf_unregister_queue_handler(PF_INET);
282 +#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
283 + nf_unregister_hook(&imq_ingress_ipv6);
284 + nf_unregister_hook(&imq_egress_ipv6);
285 + nf_unregister_queue_handler(PF_INET6);
286 +#endif
287 +}
288 +
289 +static int __init imq_dev_init(struct net_device *dev)
290 +{
291 + dev->hard_start_xmit = imq_dev_xmit;
292 + dev->type = ARPHRD_VOID;
293 + dev->mtu = 1500;
294 + dev->tx_queue_len = 30;
295 + dev->flags = IFF_NOARP;
296 + dev->priv = kmalloc(sizeof(struct net_device_stats), GFP_KERNEL);
297 + if (dev->priv == NULL)
298 + return -ENOMEM;
299 + memset(dev->priv, 0, sizeof(struct net_device_stats));
300 + dev->get_stats = imq_get_stats;
301 +
302 + return 0;
303 +}
304 +
305 +static void imq_dev_uninit(struct net_device *dev)
306 +{
307 + kfree(dev->priv);
308 +}
309 +
310 +static int __init imq_init_devs(void)
311 +{
312 + struct net_device *dev;
313 + int i,j;
314 + j = numdevs;
315 +
316 + if (!numdevs || numdevs > IMQ_MAX_DEVS) {
317 + printk(KERN_ERR "IMQ: numdevs has to be betweed 1 and %u\n",
318 + IMQ_MAX_DEVS);
319 + return -EINVAL;
320 + }
321 +
322 + imq_devs = kmalloc(sizeof(struct net_device) * numdevs, GFP_KERNEL);
323 + if (!imq_devs)
324 + return -ENOMEM;
325 + memset(imq_devs, 0, sizeof(struct net_device) * numdevs);
326 +
327 + /* we start counting at zero */
328 + numdevs--;
329 +
330 + for (i = 0, dev = imq_devs; i <= numdevs; i++, dev++) {
331 + SET_MODULE_OWNER(dev);
332 + strcpy(dev->name, "imq%d");
333 + dev->init = imq_dev_init;
334 + dev->uninit = imq_dev_uninit;
335 +
336 + if (register_netdev(dev) < 0)
337 + goto err_register;
338 + }
339 + printk(KERN_INFO "IMQ starting with %u devices...\n", j);
340 + return 0;
341 +
342 +err_register:
343 + for (; i; i--)
344 + unregister_netdev(--dev);
345 + kfree(imq_devs);
346 + return -EIO;
347 +}
348 +
349 +static void imq_cleanup_devs(void)
350 +{
351 + int i;
352 + struct net_device *dev = imq_devs;
353 +
354 + for (i = 0; i <= numdevs; i++)
355 + unregister_netdev(dev++);
356 +
357 + kfree(imq_devs);
358 +}
359 +
360 +static int __init imq_init_module(void)
361 +{
362 + int err;
363 +
364 + if ((err = imq_init_devs())) {
365 + printk(KERN_ERR "IMQ: Error trying imq_init_devs()\n");
366 + return err;
367 + }
368 + if ((err = imq_init_hooks())) {
369 + printk(KERN_ERR "IMQ: Error trying imq_init_hooks()\n");
370 + imq_cleanup_devs();
371 + return err;
372 + }
373 +
374 + printk(KERN_INFO "IMQ driver loaded successfully.\n");
375 +
376 +#if defined(CONFIG_IMQ_BEHAVIOR_BA) || defined(CONFIG_IMQ_BEHAVIOR_BB)
377 + printk(KERN_INFO "\tHooking IMQ before NAT on PREROUTING.\n");
378 +#else
379 + printk(KERN_INFO "\tHooking IMQ after NAT on PREROUTING.\n");
380 +#endif
381 +#if defined(CONFIG_IMQ_BEHAVIOR_AB) || defined(CONFIG_IMQ_BEHAVIOR_BB)
382 + printk(KERN_INFO "\tHooking IMQ before NAT on POSTROUTING.\n");
383 +#else
384 + printk(KERN_INFO "\tHooking IMQ after NAT on POSTROUTING.\n");
385 +#endif
386 +
387 + return 0;
388 +}
389 +
390 +static void __exit imq_cleanup_module(void)
391 +{
392 + imq_unhook();
393 + imq_cleanup_devs();
394 + printk(KERN_INFO "IMQ driver unloaded successfully.\n");
395 +}
396 +
397 +
398 +module_init(imq_init_module);
399 +module_exit(imq_cleanup_module);
400 +
401 +module_param(numdevs, int, 0);
402 +MODULE_PARM_DESC(numdevs, "number of IMQ devices (how many imq* devices will be created)");
403 +MODULE_AUTHOR("http://www.linuximq.net");
404 +MODULE_DESCRIPTION("Pseudo-driver for the intermediate queue device. See http://www.linuximq.net/ for more information.");
405 +MODULE_LICENSE("GPL");
406 --- linux-2.6.20-original/drivers/net/Kconfig 2007-02-04 20:44:54.000000000 +0200
407 +++ linux-2.6.20/drivers/net/Kconfig 2007-02-12 23:55:04.000000000 +0200
408 @@ -96,6 +96,129 @@
409 To compile this driver as a module, choose M here: the module
410 will be called eql. If unsure, say N.
411
412 +config IMQ
413 + tristate "IMQ (intermediate queueing device) support"
414 + depends on NETDEVICES && NETFILTER
415 + ---help---
416 + The IMQ device(s) is used as placeholder for QoS queueing
417 + disciplines. Every packet entering/leaving the IP stack can be
418 + directed through the IMQ device where it's enqueued/dequeued to the
419 + attached qdisc. This allows you to treat network devices as classes
420 + and distribute bandwidth among them. Iptables is used to specify
421 + through which IMQ device, if any, packets travel.
422 +
423 + More information at: http://www.linuximq.net/
424 +
425 + To compile this driver as a module, choose M here: the module
426 + will be called imq. If unsure, say N.
427 +
428 +choice
429 + prompt "IMQ behavior (PRE/POSTROUTING)"
430 + depends on IMQ
431 + default IMQ_BEHAVIOR_BA
432 + help
433 +
434 + This settings defines how IMQ behaves in respect to its
435 + hooking in PREROUTING and POSTROUTING.
436 +
437 + IMQ can work in any of the following ways:
438 +
439 + PREROUTING | POSTROUTING
440 + -----------------|-------------------
441 + #1 After NAT | After NAT
442 + #2 After NAT | Before NAT
443 + #3 Before NAT | After NAT
444 + #4 Before NAT | Before NAT
445 +
446 + The default behavior is to hook before NAT on PREROUTING
447 + and after NAT on POSTROUTING (#3).
448 +
449 + This settings are specially usefull when trying to use IMQ
450 + to shape NATed clients.
451 +
452 + More information can be found at: www.linuximq.net
453 +
454 + If not sure leave the default settings alone.
455 +
456 +config IMQ_BEHAVIOR_AA
457 + bool "IMQ AA"
458 + help
459 + This settings defines how IMQ behaves in respect to its
460 + hooking in PREROUTING and POSTROUTING.
461 +
462 + Choosing this option will make IMQ hook like this:
463 +
464 + PREROUTING: After NAT
465 + POSTROUTING: After NAT
466 +
467 + More information can be found at: www.linuximq.net
468 +
469 + If not sure leave the default settings alone.
470 +
471 +config IMQ_BEHAVIOR_AB
472 + bool "IMQ AB"
473 + help
474 + This settings defines how IMQ behaves in respect to its
475 + hooking in PREROUTING and POSTROUTING.
476 +
477 + Choosing this option will make IMQ hook like this:
478 +
479 + PREROUTING: After NAT
480 + POSTROUTING: Before NAT
481 +
482 + More information can be found at: www.linuximq.net
483 +
484 + If not sure leave the default settings alone.
485 +
486 +config IMQ_BEHAVIOR_BA
487 + bool "IMQ BA"
488 + help
489 + This settings defines how IMQ behaves in respect to its
490 + hooking in PREROUTING and POSTROUTING.
491 +
492 + Choosing this option will make IMQ hook like this:
493 +
494 + PREROUTING: Before NAT
495 + POSTROUTING: After NAT
496 +
497 + More information can be found at: www.linuximq.net
498 +
499 + If not sure leave the default settings alone.
500 +
501 +config IMQ_BEHAVIOR_BB
502 + bool "IMQ BB"
503 + help
504 + This settings defines how IMQ behaves in respect to its
505 + hooking in PREROUTING and POSTROUTING.
506 +
507 + Choosing this option will make IMQ hook like this:
508 +
509 + PREROUTING: Before NAT
510 + POSTROUTING: Before NAT
511 +
512 + More information can be found at: www.linuximq.net
513 +
514 + If not sure leave the default settings alone.
515 +
516 +endchoice
517 +
518 +config IMQ_NUM_DEVS
519 +
520 + int "Number of IMQ devices"
521 + range 2 8
522 + depends on IMQ
523 + default "2"
524 + help
525 +
526 + This settings defines how many IMQ devices will be
527 + created.
528 +
529 + The default value is 2.
530 +
531 + More information can be found at: www.linuximq.net
532 +
533 + If not sure leave the default settings alone.
534 +
535 config TUN
536 tristate "Universal TUN/TAP device driver support"
537 select CRC32
538 --- linux-2.6.20-original/drivers/net/Makefile 2007-02-04 20:44:54.000000000 +0200
539 +++ linux-2.6.20/drivers/net/Makefile 2007-02-12 23:55:04.000000000 +0200
540 @@ -124,6 +124,7 @@
541 obj-$(CONFIG_SLHC) += slhc.o
542
543 obj-$(CONFIG_DUMMY) += dummy.o
544 +obj-$(CONFIG_IMQ) += imq.o
545 obj-$(CONFIG_IFB) += ifb.o
546 obj-$(CONFIG_DE600) += de600.o
547 obj-$(CONFIG_DE620) += de620.o
548 --- linux-2.6.20-original/include/linux/imq.h 1970-01-01 02:00:00.000000000 +0200
549 +++ linux-2.6.20/include/linux/imq.h 2007-02-12 23:55:04.000000000 +0200
550 @@ -0,0 +1,9 @@
551 +#ifndef _IMQ_H
552 +#define _IMQ_H
553 +
554 +#define IMQ_MAX_DEVS 16
555 +
556 +#define IMQ_F_IFMASK 0x7f
557 +#define IMQ_F_ENQUEUE 0x80
558 +
559 +#endif /* _IMQ_H */
560 --- linux-2.6.20-original/include/linux/netfilter_ipv4/ipt_IMQ.h 1970-01-01 02:00:00.000000000 +0200
561 +++ linux-2.6.20/include/linux/netfilter_ipv4/ipt_IMQ.h 2007-02-12 23:55:04.000000000 +0200
562 @@ -0,0 +1,8 @@
563 +#ifndef _IPT_IMQ_H
564 +#define _IPT_IMQ_H
565 +
566 +struct ipt_imq_info {
567 + unsigned int todev; /* target imq device */
568 +};
569 +
570 +#endif /* _IPT_IMQ_H */
571 --- linux-2.6.20-original/include/linux/netfilter_ipv6/ip6t_IMQ.h 1970-01-01 02:00:00.000000000 +0200
572 +++ linux-2.6.20/include/linux/netfilter_ipv6/ip6t_IMQ.h 2007-02-12 23:55:04.000000000 +0200
573 @@ -0,0 +1,8 @@
574 +#ifndef _IP6T_IMQ_H
575 +#define _IP6T_IMQ_H
576 +
577 +struct ip6t_imq_info {
578 + unsigned int todev; /* target imq device */
579 +};
580 +
581 +#endif /* _IP6T_IMQ_H */
582 --- linux-2.6.20-original/include/linux/skbuff.h 2007-02-04 20:44:54.000000000 +0200
583 +++ linux-2.6.20/include/linux/skbuff.h 2007-02-12 23:55:04.000000000 +0200
584 @@ -293,6 +293,10 @@
585 #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
586 struct sk_buff *nfct_reasm;
587 #endif
588 +#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
589 + unsigned char imq_flags;
590 + struct nf_info *nf_info;
591 +#endif
592 #ifdef CONFIG_BRIDGE_NETFILTER
593 struct nf_bridge_info *nf_bridge;
594 #endif
595 --- linux-2.6.20-original/net/core/dev.c 2007-02-04 20:44:54.000000000 +0200
596 +++ linux-2.6.20/net/core/dev.c 2007-02-12 23:55:04.000000000 +0200
597 @@ -94,6 +94,9 @@
598 #include <linux/skbuff.h>
599 #include <net/sock.h>
600 #include <linux/rtnetlink.h>
601 +#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
602 +#include <linux/imq.h>
603 +#endif
604 #include <linux/proc_fs.h>
605 #include <linux/seq_file.h>
606 #include <linux/stat.h>
607 @@ -1343,7 +1346,11 @@
608 int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
609 {
610 if (likely(!skb->next)) {
611 - if (netdev_nit)
612 + if (netdev_nit
613 +#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
614 + && !(skb->imq_flags & IMQ_F_ENQUEUE)
615 +#endif
616 + )
617 dev_queue_xmit_nit(skb, dev);
618
619 if (netif_needs_gso(dev, skb)) {
620 --- linux-2.6.20-original/net/core/skbuff.c 2007-02-04 20:44:54.000000000 +0200
621 +++ linux-2.6.20/net/core/skbuff.c 2007-02-12 23:55:04.000000000 +0200
622 @@ -485,6 +485,10 @@
623 C(nfct_reasm);
624 nf_conntrack_get_reasm(skb->nfct_reasm);
625 #endif
626 +#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
627 + C(imq_flags);
628 + C(nf_info);
629 +#endif /*CONFIG_IMQ*/
630 #ifdef CONFIG_BRIDGE_NETFILTER
631 C(nf_bridge);
632 nf_bridge_get(skb->nf_bridge);
633 @@ -549,6 +553,10 @@
634 #if defined(CONFIG_IP_VS) || defined(CONFIG_IP_VS_MODULE)
635 new->ipvs_property = old->ipvs_property;
636 #endif
637 +#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
638 + new->imq_flags = old->imq_flags;
639 + new->nf_info = old->nf_info;
640 +#endif /*CONFIG_IMQ*/
641 #ifdef CONFIG_BRIDGE_NETFILTER
642 new->nf_bridge = old->nf_bridge;
643 nf_bridge_get(old->nf_bridge);
644 --- linux-2.6.20-original/net/ipv4/netfilter/ipt_IMQ.c 1970-01-01 02:00:00.000000000 +0200
645 +++ linux-2.6.20/net/ipv4/netfilter/ipt_IMQ.c 2007-02-12 23:55:04.000000000 +0200
646 @@ -0,0 +1,71 @@
647 +/*
648 + * This target marks packets to be enqueued to an imq device
649 + */
650 +#include <linux/module.h>
651 +#include <linux/skbuff.h>
652 +#include <linux/netfilter_ipv4/ip_tables.h>
653 +#include <linux/netfilter_ipv4/ipt_IMQ.h>
654 +#include <linux/imq.h>
655 +
656 +static unsigned int imq_target(struct sk_buff **pskb,
657 + const struct net_device *in,
658 + const struct net_device *out,
659 + unsigned int hooknum,
660 + const struct xt_target *target,
661 + const void *targinfo)
662 +{
663 + struct ipt_imq_info *mr = (struct ipt_imq_info*)targinfo;
664 +
665 + (*pskb)->imq_flags = mr->todev | IMQ_F_ENQUEUE;
666 +
667 + return IPT_CONTINUE;
668 +}
669 +
670 +static int imq_checkentry(const char *tablename,
671 + const void *e,
672 + const struct xt_target *target,
673 + void *targinfo,
674 + unsigned int hook_mask)
675 +{
676 + struct ipt_imq_info *mr;
677 +
678 + mr = (struct ipt_imq_info*)targinfo;
679 +
680 + if (mr->todev > IMQ_MAX_DEVS) {
681 + printk(KERN_WARNING
682 + "IMQ: invalid device specified, highest is %u\n",
683 + IMQ_MAX_DEVS);
684 + return 0;
685 + }
686 +
687 + return 1;
688 +}
689 +
690 +static struct ipt_target ipt_imq_reg = {
691 + .name = "IMQ",
692 + .target = imq_target,
693 + .targetsize = sizeof(struct ipt_imq_info),
694 + .checkentry = imq_checkentry,
695 + .me = THIS_MODULE,
696 + .table = "mangle"
697 +};
698 +
699 +static int __init init(void)
700 +{
701 + if (xt_register_target(&ipt_imq_reg))
702 + return -EINVAL;
703 +
704 + return 0;
705 +}
706 +
707 +static void __exit fini(void)
708 +{
709 + xt_unregister_target(&ipt_imq_reg);
710 +}
711 +
712 +module_init(init);
713 +module_exit(fini);
714 +
715 +MODULE_AUTHOR("http://www.linuximq.net");
716 +MODULE_DESCRIPTION("Pseudo-driver for the intermediate queue device. See http://www.linuximq.net/ for more information.");
717 +MODULE_LICENSE("GPL");
718 --- linux-2.6.20-original/net/ipv4/netfilter/Kconfig 2007-02-04 20:44:54.000000000 +0200
719 +++ linux-2.6.20/net/ipv4/netfilter/Kconfig 2007-02-12 23:55:04.000000000 +0200
720 @@ -591,6 +591,17 @@
721
722 To compile it as a module, choose M here. If unsure, say N.
723
724 +config IP_NF_TARGET_IMQ
725 + tristate "IMQ target support"
726 + depends on IP_NF_MANGLE
727 + help
728 + This option adds a `IMQ' target which is used to specify if and
729 + to which IMQ device packets should get enqueued/dequeued.
730 +
731 + For more information visit: http://www.linuximq.net/
732 +
733 + To compile it as a module, choose M here. If unsure, say N.
734 +
735 config IP_NF_TARGET_TOS
736 tristate "TOS target support"
737 depends on IP_NF_MANGLE
738 --- linux-2.6.20-original/net/ipv4/netfilter/Makefile 2007-02-04 20:44:54.000000000 +0200
739 +++ linux-2.6.20/net/ipv4/netfilter/Makefile 2007-02-12 23:55:04.000000000 +0200
740 @@ -96,6 +96,7 @@
741 obj-$(CONFIG_IP_NF_TARGET_REJECT) += ipt_REJECT.o
742 obj-$(CONFIG_IP_NF_TARGET_TOS) += ipt_TOS.o
743 obj-$(CONFIG_IP_NF_TARGET_ECN) += ipt_ECN.o
744 +obj-$(CONFIG_IP_NF_TARGET_IMQ) += ipt_IMQ.o
745 obj-$(CONFIG_IP_NF_TARGET_MASQUERADE) += ipt_MASQUERADE.o
746 obj-$(CONFIG_IP_NF_TARGET_REDIRECT) += ipt_REDIRECT.o
747 obj-$(CONFIG_IP_NF_TARGET_NETMAP) += ipt_NETMAP.o
748 --- linux-2.6.20-original/net/ipv6/netfilter/ip6t_IMQ.c 1970-01-01 02:00:00.000000000 +0200
749 +++ linux-2.6.20/net/ipv6/netfilter/ip6t_IMQ.c 2007-02-12 23:55:04.000000000 +0200
750 @@ -0,0 +1,71 @@
751 +/*
752 + * This target marks packets to be enqueued to an imq device
753 + */
754 +#include <linux/module.h>
755 +#include <linux/skbuff.h>
756 +#include <linux/netfilter_ipv6/ip6_tables.h>
757 +#include <linux/netfilter_ipv6/ip6t_IMQ.h>
758 +#include <linux/imq.h>
759 +
760 +static unsigned int imq_target(struct sk_buff **pskb,
761 + const struct net_device *in,
762 + const struct net_device *out,
763 + unsigned int hooknum,
764 + const struct xt_target *target,
765 + const void *targinfo)
766 +{
767 + struct ip6t_imq_info *mr = (struct ip6t_imq_info*)targinfo;
768 +
769 + (*pskb)->imq_flags = mr->todev | IMQ_F_ENQUEUE;
770 +
771 + return IP6T_CONTINUE;
772 +}
773 +
774 +static int imq_checkentry(const char *tablename,
775 + const void *entry,
776 + const struct xt_target *target,
777 + void *targinfo,
778 + unsigned int hook_mask)
779 +{
780 + struct ip6t_imq_info *mr;
781 +
782 + mr = (struct ip6t_imq_info*)targinfo;
783 +
784 + if (mr->todev > IMQ_MAX_DEVS) {
785 + printk(KERN_WARNING
786 + "IMQ: invalid device specified, highest is %u\n",
787 + IMQ_MAX_DEVS);
788 + return 0;
789 + }
790 +
791 + return 1;
792 +}
793 +
794 +static struct ip6t_target ip6t_imq_reg = {
795 + .name = "IMQ",
796 + .target = imq_target,
797 + .targetsize = sizeof(struct ip6t_imq_info),
798 + .table = "mangle",
799 + .checkentry = imq_checkentry,
800 + .me = THIS_MODULE
801 +};
802 +
803 +static int __init init(void)
804 +{
805 + if (xt_register_target(&ip6t_imq_reg))
806 + return -EINVAL;
807 +
808 + return 0;
809 +}
810 +
811 +static void __exit fini(void)
812 +{
813 + xt_unregister_target(&ip6t_imq_reg);
814 +}
815 +
816 +module_init(init);
817 +module_exit(fini);
818 +
819 +MODULE_AUTHOR("http://www.linuximq.net");
820 +MODULE_DESCRIPTION("Pseudo-driver for the intermediate queue device. See http://www.linuximq.net/ for more information.");
821 +MODULE_LICENSE("GPL");
822 --- linux-2.6.20-original/net/ipv6/netfilter/Kconfig 2007-02-04 20:44:54.000000000 +0200
823 +++ linux-2.6.20/net/ipv6/netfilter/Kconfig 2007-02-12 23:55:04.000000000 +0200
824 @@ -164,6 +164,15 @@
825
826 To compile it as a module, choose M here. If unsure, say N.
827
828 +config IP6_NF_TARGET_IMQ
829 + tristate "IMQ target support"
830 + depends on IP6_NF_MANGLE
831 + help
832 + This option adds a `IMQ' target which is used to specify if and
833 + to which imq device packets should get enqueued/dequeued.
834 +
835 + To compile it as a module, choose M here. If unsure, say N.
836 +
837 config IP6_NF_TARGET_HL
838 tristate 'HL (hoplimit) target support'
839 depends on IP6_NF_MANGLE
840 --- linux-2.6.20-original/net/ipv6/netfilter/Makefile 2007-02-04 20:44:54.000000000 +0200
841 +++ linux-2.6.20/net/ipv6/netfilter/Makefile 2007-02-12 23:55:04.000000000 +0200
842 @@ -13,6 +13,7 @@
843 obj-$(CONFIG_IP6_NF_MATCH_OWNER) += ip6t_owner.o
844 obj-$(CONFIG_IP6_NF_FILTER) += ip6table_filter.o
845 obj-$(CONFIG_IP6_NF_MANGLE) += ip6table_mangle.o
846 +obj-$(CONFIG_IP6_NF_TARGET_IMQ) += ip6t_IMQ.o
847 obj-$(CONFIG_IP6_NF_TARGET_HL) += ip6t_HL.o
848 obj-$(CONFIG_IP6_NF_QUEUE) += ip6_queue.o
849 obj-$(CONFIG_IP6_NF_TARGET_LOG) += ip6t_LOG.o
850 --- linux-2.6.20-original/net/sched/sch_generic.c 2007-02-04 20:44:54.000000000 +0200
851 +++ linux-2.6.20/net/sched/sch_generic.c 2007-02-12 23:55:04.000000000 +0200
852 @@ -87,7 +87,6 @@
853
854 NOTE: Called under dev->queue_lock with locally disabled BH.
855 */
856 -
857 static inline int qdisc_restart(struct net_device *dev)
858 {
859 struct Qdisc *q = dev->qdisc;
860 @@ -181,6 +180,11 @@
861 return q->q.qlen;
862 }
863
864 +int qdisc_restart1(struct net_device *dev)
865 +{
866 + return qdisc_restart(dev);
867 +}
868 +
869 void __qdisc_run(struct net_device *dev)
870 {
871 if (unlikely(dev->qdisc == &noop_qdisc))
872 @@ -617,3 +621,4 @@
873 EXPORT_SYMBOL(qdisc_reset);
874 EXPORT_SYMBOL(qdisc_lock_tree);
875 EXPORT_SYMBOL(qdisc_unlock_tree);
876 +EXPORT_SYMBOL(qdisc_restart1);
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