target/linux/linux-2.4/patches/generic/616-netfilter_imq.patch

   1 diff -aurN linux-2.4.28-orig/Documentation/Configure.help linux-2.4.28/Documentation/Configure.help
   2 --- linux-2.4.28-orig/Documentation/Configure.help      2004-11-17 11:54:20.000000000 +0000
   3 +++ linux-2.4.28/Documentation/Configure.help   2004-12-14 11:43:42.000000000 +0000
   4 @@ -3147,6 +3147,22 @@
   5    If you want to compile it as a module, say M here and read
   6    <file:Documentation/modules.txt>.  If unsure, say `N'.
   7
   8 +IMQ target support
   9 +CONFIG_IP_NF_TARGET_IMQ
  10 +  This option adds a `IMQ' target which is used to specify if and
  11 +  to which imq device packets should get enqueued/dequeued.
  12 +
  13 +  If you want to compile it as a module, say M here and read
  14 +  <file:Documentation/modules.txt>.  If unsure, say `N'.
  15 +
  16 +IMQ target support
  17 +CONFIG_IP6_NF_TARGET_IMQ
  18 +  This option adds a `IMQ' target which is used to specify if and
  19 +  to which imq device packets should get enqueued/dequeued.
  20 +
  21 +  If you want to compile it as a module, say M here and read
  22 +  <file:Documentation/modules.txt>.  If unsure, say `N'.
  23 +
  24  MARK target support
  25  CONFIG_IP_NF_TARGET_MARK
  26    This option adds a `MARK' target, which allows you to create rules
  27 @@ -9799,6 +9815,20 @@
  28    say M here and read <file:Documentation/modules.txt>.  The module
  29    will be called bonding.o.
  30
  31 +Intermediate queueing device support
  32 +CONFIG_IMQ
  33 +  The imq device(s) is used as placeholder for QoS queueing disciplines.
  34 +  Every packet entering/leaving the ip stack can be directed through
  35 +  the imq device where it's enqueued/dequeued to the attached qdisc.
  36 +  This allows you to treat network devices as classes and distribute
  37 +  bandwidth among them. Iptables is used to specify through which imq
  38 +  device, if any, packets travel.
  39 +
  40 +  If you want to compile this as a module ( = code which ca be
  41 +  inserted in and removed from the running kernel whenever you want),
  42 +  say M here and read <file:Documentation/modules.txt>.  The module
  43 +  will be called imq.o
  44 +
  45  SLIP (serial line) support
  46  CONFIG_SLIP
  47    Say Y if you intend to use SLIP or CSLIP (compressed SLIP) to
  48 diff -aurN linux-2.4.28-orig/drivers/net/Config.in linux-2.4.28/drivers/net/Config.in
  49 --- linux-2.4.28-orig/drivers/net/Config.in     2004-08-07 23:26:04.000000000 +0000
  50 +++ linux-2.4.28/drivers/net/Config.in  2004-12-14 11:43:42.000000000 +0000
  51 @@ -7,6 +7,11 @@
  52  tristate 'Dummy net driver support' CONFIG_DUMMY
  53  tristate 'Bonding driver support' CONFIG_BONDING
  54  tristate 'EQL (serial line load balancing) support' CONFIG_EQUALIZER
  55 +if [ "$CONFIG_NETFILTER" = "y" ]; then
  56 +  tristate 'IMQ (intermediate queueing device) support' CONFIG_IMQ
  57 +else
  58 +  comment 'IMQ needs CONFIG_NETFILTER enabled'
  59 +fi
  60  tristate 'Universal TUN/TAP device driver support' CONFIG_TUN
  61  if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
  62     tristate 'Ethertap network tap (OBSOLETE)' CONFIG_ETHERTAP
  63 diff -aurN linux-2.4.28-orig/drivers/net/Makefile linux-2.4.28/drivers/net/Makefile
  64 --- linux-2.4.28-orig/drivers/net/Makefile      2004-08-07 23:26:04.000000000 +0000
  65 +++ linux-2.4.28/drivers/net/Makefile   2004-12-14 11:43:42.000000000 +0000
  66 @@ -170,6 +170,7 @@
  67
  68  obj-$(CONFIG_STRIP) += strip.o
  69  obj-$(CONFIG_DUMMY) += dummy.o
  70 +obj-$(CONFIG_IMQ) += imq.o
  71  obj-$(CONFIG_DE600) += de600.o
  72  obj-$(CONFIG_DE620) += de620.o
  73  obj-$(CONFIG_AT1500) += lance.o
  74 diff -aurN linux-2.4.28-orig/drivers/net/imq.c linux-2.4.28/drivers/net/imq.c
  75 --- linux-2.4.28-orig/drivers/net/imq.c 1970-01-01 00:00:00.000000000 +0000
  76 +++ linux-2.4.28/drivers/net/imq.c      2004-12-14 11:43:42.000000000 +0000
  77 @@ -0,0 +1,321 @@
  78 +/*
  79 + *             Pseudo-driver for the intermediate queue device.
  80 + *
  81 + *             This program is free software; you can redistribute it and/or
  82 + *             modify it under the terms of the GNU General Public License
  83 + *             as published by the Free Software Foundation; either version
  84 + *             2 of the License, or (at your option) any later version.
  85 + *
  86 + * Authors:    Patrick McHardy, <kaber@trash.net>
  87 + *
  88 + *            The first version was written by Martin Devera, <devik@cdi.cz>
  89 + *
  90 + * Credits:    Jan Rafaj <imq2t@cedric.vabo.cz>
  91 + *              - Update patch to 2.4.21
  92 + *             Sebastian Strollo <sstrollo@nortelnetworks.com>
  93 + *              - Fix "Dead-loop on netdevice imq"-issue
  94 + */
  95 +
  96 +#include <linux/kernel.h>
  97 +#include <linux/module.h>
  98 +#include <linux/config.h>
  99 +#include <linux/skbuff.h>
 100 +#include <linux/netdevice.h>
 101 +#include <linux/rtnetlink.h>
 102 +#include <linux/if_arp.h>
 103 +#include <linux/netfilter.h>
 104 +#include <linux/netfilter_ipv4.h>
 105 +#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
 106 +#include <linux/netfilter_ipv6.h>
 107 +#endif
 108 +#include <linux/imq.h>
 109 +#include <net/pkt_sched.h>
 110 +
 111 +static nf_hookfn imq_nf_hook;
 112 +
 113 +static struct nf_hook_ops imq_ingress_ipv4 = {
 114 +       { NULL, NULL},
 115 +       imq_nf_hook,
 116 +       PF_INET,
 117 +       NF_IP_PRE_ROUTING,
 118 +       NF_IP_PRI_MANGLE + 1
 119 +};
 120 +
 121 +static struct nf_hook_ops imq_egress_ipv4 = {
 122 +       { NULL, NULL},
 123 +       imq_nf_hook,
 124 +       PF_INET,
 125 +       NF_IP_POST_ROUTING,
 126 +       NF_IP_PRI_LAST
 127 +};
 128 +
 129 +#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
 130 +static struct nf_hook_ops imq_ingress_ipv6 = {
 131 +       { NULL, NULL},
 132 +       imq_nf_hook,
 133 +       PF_INET6,
 134 +       NF_IP6_PRE_ROUTING,
 135 +       NF_IP6_PRI_MANGLE + 1
 136 +};
 137 +
 138 +static struct nf_hook_ops imq_egress_ipv6 = {
 139 +       { NULL, NULL},
 140 +       imq_nf_hook,
 141 +       PF_INET6,
 142 +       NF_IP6_POST_ROUTING,
 143 +       NF_IP6_PRI_LAST
 144 +};
 145 +#endif
 146 +
 147 +static unsigned int numdevs = 2;
 148 +
 149 +MODULE_PARM(numdevs, "i");
 150 +MODULE_PARM_DESC(numdevs, "number of imq devices");
 151 +
 152 +static struct net_device *imq_devs;
 153 +
 154 +
 155 +static struct net_device_stats *imq_get_stats(struct net_device *dev)
 156 +{
 157 +       return (struct net_device_stats *)dev->priv;
 158 +}
 159 +
 160 +/* called for packets kfree'd in qdiscs at places other than enqueue */
 161 +static void imq_skb_destructor(struct sk_buff *skb)
 162 +{
 163 +       struct nf_info *info = skb->nf_info;
 164 +
 165 +       if (info) {
 166 +               if (info->indev)
 167 +                       dev_put(info->indev);
 168 +               if (info->outdev)
 169 +                       dev_put(info->outdev);
 170 +               kfree(info);
 171 +       }
 172 +}
 173 +
 174 +static int imq_dev_xmit(struct sk_buff *skb, struct net_device *dev)
 175 +{
 176 +       struct net_device_stats *stats = (struct net_device_stats*) dev->priv;
 177 +
 178 +       stats->tx_bytes += skb->len;
 179 +       stats->tx_packets++;
 180 +
 181 +       skb->imq_flags = 0;
 182 +       skb->destructor = NULL;
 183 +
 184 +       dev->trans_start = jiffies;
 185 +       nf_reinject(skb, skb->nf_info, NF_ACCEPT);
 186 +       return 0;
 187 +}
 188 +
 189 +static int imq_nf_queue(struct sk_buff *skb, struct nf_info *info,
 190 +                       void *data)
 191 +{
 192 +       struct net_device *dev;
 193 +       struct net_device_stats *stats;
 194 +       struct sk_buff *skb2 = NULL;
 195 +       struct Qdisc *q;
 196 +       unsigned int index = skb->imq_flags&IMQ_F_IFMASK;
 197 +       int ret = -1;
 198 +
 199 +       if (index > numdevs)
 200 +               return -1;
 201 +
 202 +       dev = imq_devs + index;
 203 +       if (!(dev->flags & IFF_UP)) {
 204 +               skb->imq_flags = 0;
 205 +               nf_reinject(skb, info, NF_ACCEPT);
 206 +               return 0;
 207 +       }
 208 +       dev->last_rx = jiffies;
 209 +
 210 +       if (skb->destructor) {
 211 +               skb2 = skb;
 212 +               skb = skb_clone(skb, GFP_ATOMIC);
 213 +               if (!skb)
 214 +                       return -1;
 215 +       }
 216 +       skb->nf_info = info;
 217 +
 218 +       stats = (struct net_device_stats *)dev->priv;
 219 +       stats->rx_bytes+= skb->len;
 220 +       stats->rx_packets++;
 221 +
 222 +       spin_lock_bh(&dev->queue_lock);
 223 +       q = dev->qdisc;
 224 +       if (q->enqueue) {
 225 +               q->enqueue(skb_get(skb), q);
 226 +               if (skb_shared(skb)) {
 227 +                       skb->destructor = imq_skb_destructor;
 228 +                       kfree_skb(skb);
 229 +                       ret = 0;
 230 +               }
 231 +       }
 232 +       if (spin_is_locked(&dev->xmit_lock))
 233 +               netif_schedule(dev);
 234 +       else
 235 +               qdisc_run(dev);
 236 +       spin_unlock_bh(&dev->queue_lock);
 237 +
 238 +       if (skb2)
 239 +               kfree_skb(ret ? skb : skb2);
 240 +
 241 +       return ret;
 242 +}
 243 +
 244 +static unsigned int imq_nf_hook(unsigned int hook, struct sk_buff **pskb,
 245 +                  const struct net_device *indev,
 246 +                  const struct net_device *outdev,
 247 +                  int (*okfn)(struct sk_buff *))
 248 +{
 249 +       if ((*pskb)->imq_flags & IMQ_F_ENQUEUE)
 250 +               return NF_QUEUE;
 251 +
 252 +       return NF_ACCEPT;
 253 +}
 254 +
 255 +
 256 +static int __init imq_init_hooks(void)
 257 +{
 258 +       int err;
 259 +
 260 +       if ((err = nf_register_queue_handler(PF_INET, imq_nf_queue, NULL)))
 261 +               goto err1;
 262 +       if ((err = nf_register_hook(&imq_ingress_ipv4)))
 263 +               goto err2;
 264 +       if ((err = nf_register_hook(&imq_egress_ipv4)))
 265 +               goto err3;
 266 +#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
 267 +       if ((err = nf_register_queue_handler(PF_INET6, imq_nf_queue, NULL)))
 268 +               goto err4;
 269 +       if ((err = nf_register_hook(&imq_ingress_ipv6)))
 270 +               goto err5;
 271 +       if ((err = nf_register_hook(&imq_egress_ipv6)))
 272 +               goto err6;
 273 +#endif
 274 +
 275 +       return 0;
 276 +
 277 +#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
 278 +err6:
 279 +       nf_unregister_hook(&imq_ingress_ipv6);
 280 +err5:
 281 +       nf_unregister_queue_handler(PF_INET6);
 282 +err4:
 283 +       nf_unregister_hook(&imq_egress_ipv4);
 284 +#endif
 285 +err3:
 286 +       nf_unregister_hook(&imq_ingress_ipv4);
 287 +err2:
 288 +       nf_unregister_queue_handler(PF_INET);
 289 +err1:
 290 +       return err;
 291 +}
 292 +
 293 +static void __exit imq_unhook(void)
 294 +{
 295 +       nf_unregister_hook(&imq_ingress_ipv4);
 296 +       nf_unregister_hook(&imq_egress_ipv4);
 297 +       nf_unregister_queue_handler(PF_INET);
 298 +#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
 299 +       nf_unregister_hook(&imq_ingress_ipv6);
 300 +       nf_unregister_hook(&imq_egress_ipv6);
 301 +       nf_unregister_queue_handler(PF_INET6);
 302 +#endif
 303 +}
 304 +
 305 +static int __init imq_dev_init(struct net_device *dev)
 306 +{
 307 +       dev->hard_start_xmit    = imq_dev_xmit;
 308 +       dev->type               = ARPHRD_VOID;
 309 +       dev->mtu                = 1500;
 310 +       dev->tx_queue_len       = 30;
 311 +       dev->flags              = IFF_NOARP;
 312 +       dev->priv = kmalloc(sizeof(struct net_device_stats), GFP_KERNEL);
 313 +       if (dev->priv == NULL)
 314 +               return -ENOMEM;
 315 +       memset(dev->priv, 0, sizeof(struct net_device_stats));
 316 +       dev->get_stats          = imq_get_stats;
 317 +
 318 +       return 0;
 319 +}
 320 +
 321 +static void imq_dev_uninit(struct net_device *dev)
 322 +{
 323 +       kfree(dev->priv);
 324 +}
 325 +
 326 +static int __init imq_init_devs(void)
 327 +{
 328 +       struct net_device *dev;
 329 +       int i;
 330 +
 331 +       if (!numdevs || numdevs > IMQ_MAX_DEVS) {
 332 +               printk(KERN_ERR "numdevs has to be betweed 1 and %u\n",
 333 +                      IMQ_MAX_DEVS);
 334 +               return -EINVAL;
 335 +       }
 336 +
 337 +       imq_devs = kmalloc(sizeof(struct net_device) * numdevs, GFP_KERNEL);
 338 +       if (!imq_devs)
 339 +               return -ENOMEM;
 340 +       memset(imq_devs, 0, sizeof(struct net_device) * numdevs);
 341 +
 342 +       /* we start counting at zero */
 343 +       numdevs--;
 344 +
 345 +       for (i = 0, dev = imq_devs; i <= numdevs; i++, dev++) {
 346 +               SET_MODULE_OWNER(dev);
 347 +               strcpy(dev->name, "imq%d");
 348 +               dev->init   = imq_dev_init;
 349 +               dev->uninit = imq_dev_uninit;
 350 +
 351 +               if (register_netdev(dev) < 0)
 352 +                       goto err_register;
 353 +       }
 354 +       return 0;
 355 +
 356 +err_register:
 357 +       for (; i; i--)
 358 +               unregister_netdev(--dev);
 359 +       kfree(imq_devs);
 360 +       return -EIO;
 361 +}
 362 +
 363 +static void imq_cleanup_devs(void)
 364 +{
 365 +       int i;
 366 +       struct net_device *dev = imq_devs;
 367 +
 368 +       for (i = 0; i <= numdevs; i++)
 369 +               unregister_netdev(dev++);
 370 +
 371 +       kfree(imq_devs);
 372 +}
 373 +
 374 +static int __init imq_init_module(void)
 375 +{
 376 +       int err;
 377 +
 378 +       if ((err = imq_init_devs()))
 379 +               return err;
 380 +       if ((err = imq_init_hooks())) {
 381 +               imq_cleanup_devs();
 382 +               return err;
 383 +       }
 384 +
 385 +       printk(KERN_INFO "imq driver loaded.\n");
 386 +
 387 +       return 0;
 388 +}
 389 +
 390 +static void __exit imq_cleanup_module(void)
 391 +{
 392 +       imq_unhook();
 393 +       imq_cleanup_devs();
 394 +}
 395 +
 396 +module_init(imq_init_module);
 397 +module_exit(imq_cleanup_module);
 398 +MODULE_LICENSE("GPL");
 399 diff -aurN linux-2.4.28-orig/include/linux/imq.h linux-2.4.28/include/linux/imq.h
 400 --- linux-2.4.28-orig/include/linux/imq.h       1970-01-01 00:00:00.000000000 +0000
 401 +++ linux-2.4.28/include/linux/imq.h    2004-12-14 11:43:42.000000000 +0000
 402 @@ -0,0 +1,9 @@
 403 +#ifndef _IMQ_H
 404 +#define _IMQ_H
 405 +
 406 +#define IMQ_MAX_DEVS   16
 407 +
 408 +#define IMQ_F_IFMASK   0x7f
 409 +#define IMQ_F_ENQUEUE  0x80
 410 +
 411 +#endif /* _IMQ_H */
 412 diff -aurN linux-2.4.28-orig/include/linux/netfilter_ipv4/ipt_IMQ.h linux-2.4.28/include/linux/netfilter_ipv4/ipt_IMQ.h
 413 --- linux-2.4.28-orig/include/linux/netfilter_ipv4/ipt_IMQ.h    1970-01-01 00:00:00.000000000 +0000
 414 +++ linux-2.4.28/include/linux/netfilter_ipv4/ipt_IMQ.h 2004-12-14 11:43:42.000000000 +0000
 415 @@ -0,0 +1,8 @@
 416 +#ifndef _IPT_IMQ_H
 417 +#define _IPT_IMQ_H
 418 +
 419 +struct ipt_imq_info {
 420 +       unsigned int todev;     /* target imq device */
 421 +};
 422 +
 423 +#endif /* _IPT_IMQ_H */
 424 diff -aurN linux-2.4.28-orig/include/linux/netfilter_ipv6/ip6t_IMQ.h linux-2.4.28/include/linux/netfilter_ipv6/ip6t_IMQ.h
 425 --- linux-2.4.28-orig/include/linux/netfilter_ipv6/ip6t_IMQ.h   1970-01-01 00:00:00.000000000 +0000
 426 +++ linux-2.4.28/include/linux/netfilter_ipv6/ip6t_IMQ.h        2004-12-14 11:43:42.000000000 +0000
 427 @@ -0,0 +1,8 @@
 428 +#ifndef _IP6T_IMQ_H
 429 +#define _IP6T_IMQ_H
 430 +
 431 +struct ip6t_imq_info {
 432 +       unsigned int todev;     /* target imq device */
 433 +};
 434 +
 435 +#endif /* _IP6T_IMQ_H */
 436 diff -aurN linux-2.4.28-orig/include/linux/skbuff.h linux-2.4.28/include/linux/skbuff.h
 437 --- linux-2.4.28-orig/include/linux/skbuff.h    2004-08-07 23:26:06.000000000 +0000
 438 +++ linux-2.4.28/include/linux/skbuff.h 2004-12-14 11:43:42.000000000 +0000
 439 @@ -93,6 +93,9 @@
 440         struct nf_conntrack *master;
 441  };
 442  #endif
 443 +#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
 444 +struct nf_info;
 445 +#endif
 446
 447  struct sk_buff_head {
 448         /* These two members must be first. */
 449 @@ -182,7 +185,7 @@
 450         unsigned int    len;                    /* Length of actual data                        */
 451         unsigned int    data_len;
 452         unsigned int    csum;                   /* Checksum                                     */
 453 -       unsigned char   __unused,               /* Dead field, may be reused                    */
 454 +       unsigned char   imq_flags,              /* intermediate queueing device */
 455                         cloned,                 /* head may be cloned (check refcnt to be sure). */
 456                         pkt_type,               /* Packet class                                 */
 457                         ip_summed;              /* Driver fed us an IP checksum                 */
 458 @@ -219,6 +222,9 @@
 459  #ifdef CONFIG_NET_SCHED
 460         __u32           tc_index;               /* traffic control index */
 461  #endif
 462 +#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
 463 +       struct nf_info  *nf_info;
 464 +#endif
 465  };
 466
 467  #ifdef __KERNEL__
 468 diff -aurN linux-2.4.28-orig/net/core/skbuff.c linux-2.4.28/net/core/skbuff.c
 469 --- linux-2.4.28-orig/net/core/skbuff.c 2003-08-25 11:44:44.000000000 +0000
 470 +++ linux-2.4.28/net/core/skbuff.c      2004-12-14 11:43:42.000000000 +0000
 471 @@ -202,6 +202,10 @@
 472         /* Set up other state */
 473         skb->len = 0;
 474         skb->cloned = 0;
 475 +#if defined(CONFIG_IMQ) || defined (CONFIG_IMQ_MODULE)
 476 +       skb->imq_flags = 0;
 477 +       skb->nf_info = NULL;
 478 +#endif
 479         skb->data_len = 0;
 480
 481         atomic_set(&skb->users, 1);
 482 @@ -250,6 +254,10 @@
 483  #ifdef CONFIG_NET_SCHED
 484         skb->tc_index = 0;
 485  #endif
 486 +#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
 487 +       skb->imq_flags = 0;
 488 +       skb->nf_info = NULL;
 489 +#endif
 490  }
 491
 492  static void skb_drop_fraglist(struct sk_buff *skb)
 493 @@ -400,6 +408,10 @@
 494  #ifdef CONFIG_NET_SCHED
 495         C(tc_index);
 496  #endif
 497 +#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
 498 +       C(imq_flags);
 499 +       C(nf_info);
 500 +#endif
 501
 502         atomic_inc(&(skb_shinfo(skb)->dataref));
 503         skb->cloned = 1;
 504 @@ -444,6 +456,10 @@
 505  #ifdef CONFIG_NET_SCHED
 506         new->tc_index = old->tc_index;
 507  #endif
 508 +#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
 509 +       new->imq_flags=old->imq_flags;
 510 +       new->nf_info=old->nf_info;
 511 +#endif
 512  }
 513
 514  /**
 515 diff -aurN linux-2.4.28-orig/net/ipv4/netfilter/Config.in linux-2.4.28/net/ipv4/netfilter/Config.in
 516 --- linux-2.4.28-orig/net/ipv4/netfilter/Config.in      2003-08-25 11:44:44.000000000 +0000
 517 +++ linux-2.4.28/net/ipv4/netfilter/Config.in   2004-12-14 11:43:43.000000000 +0000
 518 @@ -104,6 +104,7 @@
 519      dep_tristate '    DSCP target support' CONFIG_IP_NF_TARGET_DSCP $CONFIG_IP_NF_MANGLE
 520
 521      dep_tristate '    MARK target support' CONFIG_IP_NF_TARGET_MARK $CONFIG_IP_NF_MANGLE
 522 +    dep_tristate '    IMQ target support' CONFIG_IP_NF_TARGET_IMQ $CONFIG_IP_NF_MANGLE
 523    fi
 524    dep_tristate '  LOG target support' CONFIG_IP_NF_TARGET_LOG $CONFIG_IP_NF_IPTABLES
 525    dep_tristate '  ULOG target support' CONFIG_IP_NF_TARGET_ULOG $CONFIG_IP_NF_IPTABLES
 526 diff -aurN linux-2.4.28-orig/net/ipv4/netfilter/Makefile linux-2.4.28/net/ipv4/netfilter/Makefile
 527 --- linux-2.4.28-orig/net/ipv4/netfilter/Makefile       2003-08-25 11:44:44.000000000 +0000
 528 +++ linux-2.4.28/net/ipv4/netfilter/Makefile    2004-12-14 11:43:43.000000000 +0000
 529 @@ -94,6 +94,7 @@
 530  obj-$(CONFIG_IP_NF_TARGET_ECN) += ipt_ECN.o
 531  obj-$(CONFIG_IP_NF_TARGET_DSCP) += ipt_DSCP.o
 532  obj-$(CONFIG_IP_NF_TARGET_MARK) += ipt_MARK.o
 533 +obj-$(CONFIG_IP_NF_TARGET_IMQ) += ipt_IMQ.o
 534  obj-$(CONFIG_IP_NF_TARGET_MASQUERADE) += ipt_MASQUERADE.o
 535  obj-$(CONFIG_IP_NF_TARGET_REDIRECT) += ipt_REDIRECT.o
 536  obj-$(CONFIG_IP_NF_NAT_SNMP_BASIC) += ip_nat_snmp_basic.o
 537 diff -aurN linux-2.4.28-orig/net/ipv4/netfilter/ipt_IMQ.c linux-2.4.28/net/ipv4/netfilter/ipt_IMQ.c
 538 --- linux-2.4.28-orig/net/ipv4/netfilter/ipt_IMQ.c      1970-01-01 00:00:00.000000000 +0000
 539 +++ linux-2.4.28/net/ipv4/netfilter/ipt_IMQ.c   2004-12-14 11:43:43.000000000 +0000
 540 @@ -0,0 +1,78 @@
 541 +/* This target marks packets to be enqueued to an imq device */
 542 +#include <linux/module.h>
 543 +#include <linux/skbuff.h>
 544 +#include <linux/netfilter_ipv4/ip_tables.h>
 545 +#include <linux/netfilter_ipv4/ipt_IMQ.h>
 546 +#include <linux/imq.h>
 547 +
 548 +static unsigned int imq_target(struct sk_buff **pskb,
 549 +                              unsigned int hooknum,
 550 +                              const struct net_device *in,
 551 +                              const struct net_device *out,
 552 +                              const void *targinfo,
 553 +                              void *userinfo)
 554 +{
 555 +       struct ipt_imq_info *mr = (struct ipt_imq_info*)targinfo;
 556 +
 557 +       (*pskb)->imq_flags = mr->todev | IMQ_F_ENQUEUE;
 558 +       (*pskb)->nfcache |= NFC_ALTERED;
 559 +
 560 +       return IPT_CONTINUE;
 561 +}
 562 +
 563 +static int imq_checkentry(const char *tablename,
 564 +                         const struct ipt_entry *e,
 565 +                         void *targinfo,
 566 +                         unsigned int targinfosize,
 567 +                         unsigned int hook_mask)
 568 +{
 569 +       struct ipt_imq_info *mr;
 570 +
 571 +       if (targinfosize != IPT_ALIGN(sizeof(struct ipt_imq_info))) {
 572 +               printk(KERN_WARNING "IMQ: invalid targinfosize\n");
 573 +               return 0;
 574 +       }
 575 +       mr = (struct ipt_imq_info*)targinfo;
 576 +
 577 +       if (strcmp(tablename, "mangle") != 0) {
 578 +               printk(KERN_WARNING
 579 +                      "IMQ: IMQ can only be called from \"mangle\" table, not \"%s\"\n",
 580 +                      tablename);
 581 +               return 0;
 582 +       }
 583 +
 584 +       if (mr->todev > IMQ_MAX_DEVS) {
 585 +               printk(KERN_WARNING
 586 +                      "IMQ: invalid device specified, highest is %u\n",
 587 +                      IMQ_MAX_DEVS);
 588 +               return 0;
 589 +       }
 590 +
 591 +       return 1;
 592 +}
 593 +
 594 +static struct ipt_target ipt_imq_reg = {
 595 +       { NULL, NULL},
 596 +       "IMQ",
 597 +       imq_target,
 598 +       imq_checkentry,
 599 +       NULL,
 600 +       THIS_MODULE
 601 +};
 602 +
 603 +static int __init init(void)
 604 +{
 605 +       if (ipt_register_target(&ipt_imq_reg))
 606 +               return -EINVAL;
 607 +
 608 +       return 0;
 609 +}
 610 +
 611 +static void __exit fini(void)
 612 +{
 613 +       ipt_unregister_target(&ipt_imq_reg);
 614 +}
 615 +
 616 +module_init(init);
 617 +module_exit(fini);
 618 +MODULE_LICENSE("GPL");
 619 diff -aurN linux-2.4.28-orig/net/ipv6/netfilter/Config.in linux-2.4.28/net/ipv6/netfilter/Config.in
 620 --- linux-2.4.28-orig/net/ipv6/netfilter/Config.in      2003-06-13 14:51:39.000000000 +0000
 621 +++ linux-2.4.28/net/ipv6/netfilter/Config.in   2004-12-14 11:43:43.000000000 +0000
 622 @@ -71,6 +71,7 @@
 623    if [ "$CONFIG_IP6_NF_MANGLE" != "n" ]; then
 624  #    dep_tristate '    TOS target support' CONFIG_IP6_NF_TARGET_TOS $CONFIG_IP_NF_MANGLE
 625      dep_tristate '    MARK target support' CONFIG_IP6_NF_TARGET_MARK $CONFIG_IP6_NF_MANGLE
 626 +    dep_tristate '    IMQ target support' CONFIG_IP6_NF_TARGET_IMQ $CONFIG_IP6_NF_MANGLE
 627    fi
 628    #dep_tristate '  LOG target support' CONFIG_IP6_NF_TARGET_LOG $CONFIG_IP6_NF_IPTABLES
 629  fi
 630 diff -aurN linux-2.4.28-orig/net/ipv6/netfilter/Makefile linux-2.4.28/net/ipv6/netfilter/Makefile
 631 --- linux-2.4.28-orig/net/ipv6/netfilter/Makefile       2003-06-13 14:51:39.000000000 +0000
 632 +++ linux-2.4.28/net/ipv6/netfilter/Makefile    2004-12-14 11:43:43.000000000 +0000
 633 @@ -28,6 +28,7 @@
 634  obj-$(CONFIG_IP6_NF_FILTER) += ip6table_filter.o
 635  obj-$(CONFIG_IP6_NF_MANGLE) += ip6table_mangle.o
 636  obj-$(CONFIG_IP6_NF_TARGET_MARK) += ip6t_MARK.o
 637 +obj-$(CONFIG_IP6_NF_TARGET_IMQ) += ip6t_IMQ.o
 638  obj-$(CONFIG_IP6_NF_QUEUE) += ip6_queue.o
 639  obj-$(CONFIG_IP6_NF_TARGET_LOG) += ip6t_LOG.o
 640  obj-$(CONFIG_IP6_NF_MATCH_HL) += ip6t_hl.o
 641 diff -aurN linux-2.4.28-orig/net/ipv6/netfilter/ip6t_IMQ.c linux-2.4.28/net/ipv6/netfilter/ip6t_IMQ.c
 642 --- linux-2.4.28-orig/net/ipv6/netfilter/ip6t_IMQ.c     1970-01-01 00:00:00.000000000 +0000
 643 +++ linux-2.4.28/net/ipv6/netfilter/ip6t_IMQ.c  2004-12-14 11:43:43.000000000 +0000
 644 @@ -0,0 +1,78 @@
 645 +/* This target marks packets to be enqueued to an imq device */
 646 +#include <linux/module.h>
 647 +#include <linux/skbuff.h>
 648 +#include <linux/netfilter_ipv6/ip6_tables.h>
 649 +#include <linux/netfilter_ipv6/ip6t_IMQ.h>
 650 +#include <linux/imq.h>
 651 +
 652 +static unsigned int imq_target(struct sk_buff **pskb,
 653 +                              unsigned int hooknum,
 654 +                              const struct net_device *in,
 655 +                              const struct net_device *out,
 656 +                              const void *targinfo,
 657 +                              void *userinfo)
 658 +{
 659 +       struct ip6t_imq_info *mr = (struct ip6t_imq_info*)targinfo;
 660 +
 661 +       (*pskb)->imq_flags = mr->todev | IMQ_F_ENQUEUE;
 662 +       (*pskb)->nfcache |= NFC_ALTERED;
 663 +
 664 +       return IP6T_CONTINUE;
 665 +}
 666 +
 667 +static int imq_checkentry(const char *tablename,
 668 +                         const struct ip6t_entry *e,
 669 +                         void *targinfo,
 670 +                         unsigned int targinfosize,
 671 +                         unsigned int hook_mask)
 672 +{
 673 +       struct ip6t_imq_info *mr;
 674 +
 675 +       if (targinfosize != IP6T_ALIGN(sizeof(struct ip6t_imq_info))) {
 676 +               printk(KERN_WARNING "IMQ: invalid targinfosize\n");
 677 +               return 0;
 678 +       }
 679 +       mr = (struct ip6t_imq_info*)targinfo;
 680 +
 681 +       if (strcmp(tablename, "mangle") != 0) {
 682 +               printk(KERN_WARNING
 683 +                      "IMQ: IMQ can only be called from \"mangle\" table, not \"%s\"\n",
 684 +                      tablename);
 685 +               return 0;
 686 +       }
 687 +
 688 +       if (mr->todev > IMQ_MAX_DEVS) {
 689 +               printk(KERN_WARNING
 690 +                      "IMQ: invalid device specified, highest is %u\n",
 691 +                      IMQ_MAX_DEVS);
 692 +               return 0;
 693 +       }
 694 +
 695 +       return 1;
 696 +}
 697 +
 698 +static struct ip6t_target ip6t_imq_reg = {
 699 +       { NULL, NULL},
 700 +       "IMQ",
 701 +       imq_target,
 702 +       imq_checkentry,
 703 +       NULL,
 704 +       THIS_MODULE
 705 +};
 706 +
 707 +static int __init init(void)
 708 +{
 709 +       if (ip6t_register_target(&ip6t_imq_reg))
 710 +               return -EINVAL;
 711 +
 712 +       return 0;
 713 +}
 714 +
 715 +static void __exit fini(void)
 716 +{
 717 +       ip6t_unregister_target(&ip6t_imq_reg);
 718 +}
 719 +
 720 +module_init(init);
 721 +module_exit(fini);
 722 +MODULE_LICENSE("GPL");
 723 diff -aurN linux-2.4.28-orig/net/sched/sch_generic.c linux-2.4.28/net/sched/sch_generic.c
 724 --- linux-2.4.28-orig/net/sched/sch_generic.c   2004-11-17 11:54:22.000000000 +0000
 725 +++ linux-2.4.28/net/sched/sch_generic.c        2004-12-14 11:44:27.000000000 +0000
 726 @@ -29,6 +29,9 @@
 727  #include <linux/skbuff.h>
 728  #include <linux/rtnetlink.h>
 729  #include <linux/init.h>
 730 +#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
 731 +#include <linux/imq.h>
 732 +#endif
 733  #include <linux/list.h>
 734  #include <net/sock.h>
 735  #include <net/pkt_sched.h>
 736 @@ -90,7 +93,11 @@
 737                         spin_unlock(&dev->queue_lock);
 738
 739                         if (!netif_queue_stopped(dev)) {
 740 -                               if (netdev_nit)
 741 +                               if (netdev_nit
 742 +#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
 743 +                                   && !(skb->imq_flags & IMQ_F_ENQUEUE)
 744 +#endif
 745 +                                   )
 746                                         dev_queue_xmit_nit(skb, dev);
 747
 748                                 if (dev->hard_start_xmit(skb, dev) == 0) {