--- /dev/null
+++ b/drivers/net/imq.c
-@@ -0,0 +1,464 @@
+@@ -0,0 +1,474 @@
+/*
+ * Pseudo-driver for the intermediate queue device.
+ *
+ * I didn't forget anybody). I apologize again for my lack of time.
+ *
+ *
-+ * 2008/06/07 - Changed imq.c to use qdisc_run() instead of
-+ * qdisc_restart() and moved qdisc_run() to tasklet to avoid
-+ * recursive locking. (Jussi Kivilinna)
++ * 2008/06/17 - 2.6.25 - Changed imq.c to use qdisc_run() instead
++ * of qdisc_restart() and moved qdisc_run() to tasklet to avoid
++ * recursive locking. New initialization routines to fix 'rmmod' not
++ * working anymore. Used code from ifb.c. (Jussi Kivilinna)
+ *
++ * Also, many thanks to pablo Sebastian Greco for making the initial
++ * patch and to those who helped the testing.
+ *
+ * More info at: http://www.linuximq.net/ (Andre Correa)
+ */
+
+struct imq_private {
+ struct tasklet_struct tasklet;
-+ int tasklet_pending;
++ unsigned long tasklet_pending;
+};
+
+static nf_hookfn imq_nf_hook;
+#if defined(CONFIG_IMQ_NUM_DEVS)
+static unsigned int numdevs = CONFIG_IMQ_NUM_DEVS;
+#else
-+static unsigned int numdevs = 16;
++static unsigned int numdevs = IMQ_MAX_DEVS;
+#endif
+
-+static struct net_device *imq_devs;
++static struct net_device *imq_devs_cache[IMQ_MAX_DEVS];
+
+static struct net_device_stats *imq_get_stats(struct net_device *dev)
+{
+ if (index > numdevs)
+ return -1;
+
-+ dev = imq_devs + index;
++ /* check for imq device by index from cache */
++ dev = imq_devs_cache[index];
++ if (!dev) {
++ char buf[8];
++
++ /* get device by name and cache result */
++ snprintf(buf, sizeof(buf), "imq%d", index);
++ dev = dev_get_by_name(&init_net, buf);
++ if (!dev) {
++ /* not found ?!*/
++ BUG();
++ return -1;
++ }
++
++ imq_devs_cache[index] = dev;
++ }
++
+ priv = netdev_priv(dev);
+ if (!(dev->flags & IFF_UP)) {
+ entry->skb->imq_flags = 0;
+ ret = 0;
+ }
+ }
-+
-+ spin_unlock_bh(&dev->queue_lock);
-+
+ if (!test_and_set_bit(1, &priv->tasklet_pending))
+ tasklet_schedule(&priv->tasklet);
++ spin_unlock_bh(&dev->queue_lock);
+
+ if (skb2)
+ kfree_skb(ret ? entry->skb : skb2);
+
+ spin_lock(&dev->queue_lock);
+ qdisc_run(dev);
-+ spin_unlock(&dev->queue_lock);
-+
+ clear_bit(1, &priv->tasklet_pending);
++ spin_unlock(&dev->queue_lock);
+}
+
+static unsigned int imq_nf_hook(unsigned int hook, struct sk_buff *pskb,
+ return 0;
+}
+
++static void imq_setup(struct net_device *dev)
++{
++ dev->hard_start_xmit = imq_dev_xmit;
++ dev->open = imq_open;
++ dev->get_stats = imq_get_stats;
++ dev->stop = imq_close;
++ dev->type = ARPHRD_VOID;
++ dev->mtu = 16000;
++ dev->tx_queue_len = 11000;
++ dev->flags = IFF_NOARP;
++}
++
++static struct rtnl_link_ops imq_link_ops __read_mostly = {
++ .kind = "imq",
++ .priv_size = sizeof(struct imq_private),
++ .setup = imq_setup,
++};
++
+static int __init imq_init_hooks(void)
+{
+ int err;
+ return err;
+}
+
-+static void __exit imq_unhook(void)
-+{
-+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-+ nf_unregister_hook(&imq_ingress_ipv6);
-+ nf_unregister_hook(&imq_egress_ipv6);
-+ nf_unregister_queue_handler(PF_INET6, &nfqh);
-+#endif
-+ nf_unregister_hook(&imq_ingress_ipv4);
-+ nf_unregister_hook(&imq_egress_ipv4);
-+ nf_unregister_queue_handler(PF_INET, &nfqh);
-+}
-+
-+static int __init imq_dev_init(struct net_device *dev)
++static int __init imq_init_one(int index)
+{
-+ dev->hard_start_xmit = imq_dev_xmit;
-+ dev->open = imq_open;
-+ dev->get_stats = imq_get_stats;
-+ dev->stop = imq_close;
-+ dev->type = ARPHRD_VOID;
-+ dev->mtu = 16000;
-+ dev->tx_queue_len = 11000;
-+ dev->flags = IFF_NOARP;
++ struct net_device *dev;
++ int ret;
+
-+ dev->priv = kzalloc(sizeof(struct imq_private), GFP_KERNEL);
-+ if (dev->priv == NULL)
++ dev = alloc_netdev(sizeof(struct imq_private), "imq%d", imq_setup);
++ if (!dev)
+ return -ENOMEM;
+
-+ return 0;
-+}
++ ret = dev_alloc_name(dev, dev->name);
++ if (ret < 0)
++ goto fail;
+
-+static void imq_dev_uninit(struct net_device *dev)
-+{
-+ kfree(dev->priv);
++ dev->rtnl_link_ops = &imq_link_ops;
++ ret = register_netdevice(dev);
++ if (ret < 0)
++ goto fail;
++
++ return 0;
++fail:
++ free_netdev(dev);
++ return ret;
+}
+
-+static int __init imq_init_devs(struct net *net)
++static int __init imq_init_devs(void)
+{
-+ struct net_device *dev;
-+ int i, j;
++ int err, i;
+
+ if (!numdevs || numdevs > IMQ_MAX_DEVS) {
+ printk(KERN_ERR "IMQ: numdevs has to be betweed 1 and %u\n",
+ return -EINVAL;
+ }
+
-+ imq_devs = kzalloc(sizeof(struct net_device) * numdevs, GFP_KERNEL);
-+ if (!imq_devs)
-+ return -ENOMEM;
++ rtnl_lock();
++ err = __rtnl_link_register(&imq_link_ops);
+
-+ /* we start counting at zero */
-+ j = numdevs - 1;
++ for (i = 0; i < numdevs && !err; i++)
++ err = imq_init_one(i);
+
-+ for (i = 0, dev = imq_devs; i <= j; i++, dev++) {
-+ strcpy(dev->name, "imq%d");
-+ dev->init = imq_dev_init;
-+ dev->uninit = imq_dev_uninit;
-+ dev->nd_net = net;
-+
-+ if (register_netdev(dev) < 0)
-+ goto err_register;
++ if (err) {
++ __rtnl_link_unregister(&imq_link_ops);
++ memset(imq_devs_cache, 0, sizeof(imq_devs_cache));
+ }
-+ printk(KERN_INFO "IMQ starting with %u devices...\n", numdevs);
-+ return 0;
-+
-+err_register:
-+ for (; i; i--)
-+ unregister_netdev(--dev);
-+ kfree(imq_devs);
-+ return -EIO;
-+}
-+
-+static void imq_cleanup_devs(void)
-+{
-+ int i;
-+ struct net_device *dev = imq_devs;
++ rtnl_unlock();
+
-+ for (i = 0; i <= numdevs; i++)
-+ unregister_netdev(dev++);
-+
-+ kfree(imq_devs);
++ return err;
+}
+
-+static __net_init int imq_init_module(struct net *net)
++static int __init imq_init_module(void)
+{
+ int err;
+
-+ err = imq_init_devs(net);
++ err = imq_init_devs();
+ if (err) {
+ printk(KERN_ERR "IMQ: Error trying imq_init_devs(net)\n");
+ return err;
+ err = imq_init_hooks();
+ if (err) {
+ printk(KERN_ERR "IMQ: Error trying imq_init_hooks()\n");
-+ imq_cleanup_devs();
++ rtnl_link_unregister(&imq_link_ops);
++ memset(imq_devs_cache, 0, sizeof(imq_devs_cache));
+ return err;
+ }
+
+ return 0;
+}
+
-+static __net_exit void imq_exit_module(struct net *net)
++static void __exit imq_unhook(void)
+{
-+ imq_unhook();
-+ imq_cleanup_devs();
-+ printk(KERN_INFO "IMQ driver unloaded successfully.\n");
++#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
++ nf_unregister_hook(&imq_ingress_ipv6);
++ nf_unregister_hook(&imq_egress_ipv6);
++ nf_unregister_queue_handler(PF_INET6, &nfqh);
++#endif
++ nf_unregister_hook(&imq_ingress_ipv4);
++ nf_unregister_hook(&imq_egress_ipv4);
++ nf_unregister_queue_handler(PF_INET, &nfqh);
+}
+
-+static struct pernet_operations __net_initdata imq_net_ops = {
-+ .init = imq_init_module,
-+ .exit = imq_exit_module,
-+};
++static void __exit imq_cleanup_devs(void)
++{
++ rtnl_link_unregister(&imq_link_ops);
++ memset(imq_devs_cache, 0, sizeof(imq_devs_cache));
++}
+
-+static int __init imq_init(void)
++static void __exit imq_exit_module(void)
+{
-+ return register_pernet_device(&imq_net_ops);
++ imq_unhook();
++ imq_cleanup_devs();
++ printk(KERN_INFO "IMQ driver unloaded successfully.\n");
+}
+
-+module_init(imq_init);
-+/*module_exit(imq_cleanup_module);*/
++module_init(imq_init_module);
++module_exit(imq_exit_module);
+
+module_param(numdevs, int, 0);
+MODULE_PARM_DESC(numdevs, "number of IMQ devices (how many imq* devices will "
+MODULE_DESCRIPTION("Pseudo-driver for the intermediate queue device. See "
+ "http://www.linuximq.net/ for more information.");
+MODULE_LICENSE("GPL");
++MODULE_ALIAS_RTNL_LINK("imq");
+
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
-@@ -117,6 +117,129 @@
+@@ -117,6 +117,129 @@ config EQUALIZER
To compile this driver as a module, choose M here: the module
will be called eql. If unsure, say N.
+choice
+ prompt "IMQ behavior (PRE/POSTROUTING)"
+ depends on IMQ
-+ default IMQ_BEHAVIOR_BB
++ default IMQ_BEHAVIOR_AB
+ help
+
+ This settings defines how IMQ behaves in respect to its
select CRC32
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
-@@ -142,6 +142,7 @@
+@@ -142,6 +142,7 @@ obj-$(CONFIG_SLHC) += slhc.o
obj-$(CONFIG_XEN_NETDEV_FRONTEND) += xen-netfront.o
obj-$(CONFIG_DUMMY) += dummy.o
+#endif /* _IP6T_IMQ_H */
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
-@@ -300,6 +300,10 @@
+@@ -300,6 +300,10 @@ struct sk_buff {
struct nf_conntrack *nfct;
struct sk_buff *nfct_reasm;
#endif
#ifdef CONFIG_BRIDGE_NETFILTER
struct nf_bridge_info *nf_bridge;
#endif
-@@ -1633,6 +1637,10 @@
+@@ -1633,6 +1637,10 @@ static inline void __nf_copy(struct sk_b
dst->nfct_reasm = src->nfct_reasm;
nf_conntrack_get_reasm(src->nfct_reasm);
#endif
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/stat.h>
-@@ -1545,7 +1548,11 @@
+@@ -1569,7 +1572,11 @@ static int dev_gso_segment(struct sk_buf
int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
if (likely(!skb->next)) {
+ const struct xt_target *target,
+ const void *targinfo)
+{
-+ struct ipt_imq_info *mr = (struct ipt_imq_info*)targinfo;
++ struct ipt_imq_info *mr = (struct ipt_imq_info *)targinfo;
+
+ pskb->imq_flags = mr->todev | IMQ_F_ENQUEUE;
+
+{
+ struct ipt_imq_info *mr;
+
-+ mr = (struct ipt_imq_info*)targinfo;
++ mr = (struct ipt_imq_info *)targinfo;
+
+ if (mr->todev > IMQ_MAX_DEVS) {
+ printk(KERN_WARNING
+MODULE_LICENSE("GPL");
--- a/net/ipv4/netfilter/Kconfig
+++ b/net/ipv4/netfilter/Kconfig
-@@ -145,6 +145,17 @@
+@@ -123,6 +123,17 @@ config IP_NF_FILTER
To compile it as a module, choose M here. If unsure, say N.
+config IP_NF_TARGET_IMQ
+ tristate "IMQ target support"
-+ depends on IP_NF_MANGLE
++ depends on IP_NF_MANGLE && IMQ
+ help
+ This option adds a `IMQ' target which is used to specify if and
+ to which IMQ device packets should get enqueued/dequeued.
depends on IP_NF_FILTER
--- a/net/ipv4/netfilter/Makefile
+++ b/net/ipv4/netfilter/Makefile
-@@ -58,6 +58,7 @@
+@@ -55,6 +55,7 @@ obj-$(CONFIG_IP_NF_MATCH_SET) += ipt_set
obj-$(CONFIG_IP_NF_TARGET_CLUSTERIP) += ipt_CLUSTERIP.o
obj-$(CONFIG_IP_NF_TARGET_ECN) += ipt_ECN.o
obj-$(CONFIG_IP_NF_TARGET_LOG) += ipt_LOG.o
+ const struct xt_target *target,
+ const void *targinfo)
+{
-+ struct ip6t_imq_info *mr = (struct ip6t_imq_info*)targinfo;
++ struct ip6t_imq_info *mr = (struct ip6t_imq_info *)targinfo;
+
+ pskb->imq_flags = mr->todev | IMQ_F_ENQUEUE;
+
+{
+ struct ip6t_imq_info *mr;
+
-+ mr = (struct ip6t_imq_info*)targinfo;
++ mr = (struct ip6t_imq_info *)targinfo;
+
+ if (mr->todev > IMQ_MAX_DEVS) {
+ printk(KERN_WARNING
+MODULE_LICENSE("GPL");
--- a/net/ipv6/netfilter/Kconfig
+++ b/net/ipv6/netfilter/Kconfig
-@@ -179,6 +179,15 @@
+@@ -179,6 +179,15 @@ config IP6_NF_MANGLE
To compile it as a module, choose M here. If unsure, say N.
+config IP6_NF_TARGET_IMQ
+ tristate "IMQ target support"
-+ depends on IP6_NF_MANGLE
++ depends on IP6_NF_MANGLE && IMQ
+ help
+ This option adds a `IMQ' target which is used to specify if and
+ to which imq device packets should get enqueued/dequeued.
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
-@@ -203,6 +203,7 @@
+@@ -203,6 +203,7 @@ void __qdisc_run(struct net_device *dev)
clear_bit(__LINK_STATE_QDISC_RUNNING, &dev->state);
}
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