# HG changeset patch
# User Brendan Cully <brendan@xxxxxxxxx>
# Date 1258048720 28800
# Node ID 54a559a767055a765602f9b525bb5b43c7aae67e
# Parent c317c41b1ac0d2241b7f40816f34b77bf3b1b168
IMQ allows the network buffer queuing discipline to block inbound
packets from the guest (normal queuing disciplines can only block
outbound packets).
>From http://www.linuximq.net/patchs/linux-2.6.18-imq.diff
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -93,6 +93,129 @@
To compile this driver as a module, choose M here: the module
will be called eql. If unsure, say N.
+config IMQ
+ tristate "IMQ (intermediate queueing device) support"
+ depends on NETDEVICES && NETFILTER
+ ---help---
+ The IMQ device(s) is used as placeholder for QoS queueing disciplines.
+ Every packet entering/leaving the IP stack can be directed through
+ the IMQ device where it's enqueued/dequeued to the attached qdisc.
+ This allows you to treat network devices as classes and distribute
+ bandwidth among them. Iptables is used to specify through which IMQ
+ device, if any, packets travel.
+
+ More information at: http://www.linuximq.net/
+
+ To compile this driver as a module, choose M here: the module
+ will be called imq. If unsure, say N.
+
+choice
+ prompt "IMQ behavior (PRE/POSTROUTING)"
+ depends on IMQ
+ default IMQ_BEHAVIOR_AB
+ help
+
+ This settings defines how IMQ behaves in respect to its
+ hooking in PREROUTING and POSTROUTING.
+
+ IMQ can work in any of the following ways:
+
+ PREROUTING | POSTROUTING
+ -----------------|-------------------
+ #1 After NAT | After NAT
+ #2 After NAT | Before NAT
+ #3 Before NAT | After NAT
+ #4 Before NAT | Before NAT
+
+ The default behavior is to hook before NAT on PREROUTING
+ and after NAT on POSTROUTING (#3).
+
+ This settings are specially usefull when trying to use IMQ
+ to shape NATed clients.
+
+ More information can be found at: www.linuximq.net
+
+ If not sure leave the default settings alone.
+
+config IMQ_BEHAVIOR_AA
+ bool "IMQ AA"
+ help
+ This settings defines how IMQ behaves in respect to its
+ hooking in PREROUTING and POSTROUTING.
+
+ Choosing this option will make IMQ hook like this:
+
+ PREROUTING: After NAT
+ POSTROUTING: After NAT
+
+ More information can be found at: www.linuximq.net
+
+ If not sure leave the default settings alone.
+
+config IMQ_BEHAVIOR_AB
+ bool "IMQ AB"
+ help
+ This settings defines how IMQ behaves in respect to its
+ hooking in PREROUTING and POSTROUTING.
+
+ Choosing this option will make IMQ hook like this:
+
+ PREROUTING: After NAT
+ POSTROUTING: Before NAT
+
+ More information can be found at: www.linuximq.net
+
+ If not sure leave the default settings alone.
+
+config IMQ_BEHAVIOR_BA
+ bool "IMQ BA"
+ help
+ This settings defines how IMQ behaves in respect to its
+ hooking in PREROUTING and POSTROUTING.
+
+ Choosing this option will make IMQ hook like this:
+
+ PREROUTING: Before NAT
+ POSTROUTING: After NAT
+
+ More information can be found at: www.linuximq.net
+
+ If not sure leave the default settings alone.
+
+config IMQ_BEHAVIOR_BB
+ bool "IMQ BB"
+ help
+ This settings defines how IMQ behaves in respect to its
+ hooking in PREROUTING and POSTROUTING.
+
+ Choosing this option will make IMQ hook like this:
+
+ PREROUTING: Before NAT
+ POSTROUTING: Before NAT
+
+ More information can be found at: www.linuximq.net
+
+ If not sure leave the default settings alone.
+
+endchoice
+
+config IMQ_NUM_DEVS
+
+ int "Number of IMQ devices"
+ range 2 16
+ depends on IMQ
+ default "2"
+ help
+
+ This settings defines how many IMQ devices will be
+ created.
+
+ The default value is 2.
+
+ More information can be found at: www.linuximq.net
+
+ If not sure leave the default settings alone.
+
config TUN
tristate "Universal TUN/TAP device driver support"
select CRC32
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -131,6 +131,7 @@
endif
obj-$(CONFIG_DUMMY) += dummy.o
+obj-$(CONFIG_IMQ) += imq.o
obj-$(CONFIG_IFB) += ifb.o
obj-$(CONFIG_DE600) += de600.o
obj-$(CONFIG_DE620) += de620.o
diff --git a/drivers/net/imq.c b/drivers/net/imq.c
new file mode 100644
--- /dev/null
+++ b/drivers/net/imq.c
@@ -0,0 +1,405 @@
+/*
+ * Pseudo-driver for the intermediate queue device.
+ *
+ * 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: Patrick McHardy, <kaber@xxxxxxxxx>
+ *
+ * The first version was written by Martin Devera, <devik@xxxxxx>
+ *
+ * Credits: Jan Rafaj <imq2t@xxxxxxxxxxxxxx>
+ * - Update patch to 2.4.21
+ * Sebastian Strollo <sstrollo@xxxxxxxxxxxxxxxxxx>
+ * - Fix "Dead-loop on netdevice imq"-issue
+ * Marcel Sebek <sebek64@xxxxxxx>
+ * - Update to 2.6.2-rc1
+ *
+ * After some time of inactivity there is a group taking care
+ * of IMQ again: http://www.linuximq.net
+ *
+ *
+ * 2004/06/30 - New version of IMQ patch to kernels <=2.6.7
including
+ * the following changes:
+ *
+ * - Correction of ipv6 support "+"s issue (Hasso Tepper)
+ * - Correction of imq_init_devs() issue that resulted in
+ * kernel OOPS unloading IMQ as module (Norbert Buchmuller)
+ * - Addition of functionality to choose number of IMQ devices
+ * during kernel config (Andre Correa)
+ * - Addition of functionality to choose how IMQ hooks on
+ * PRE and POSTROUTING (after or before NAT) (Andre Correa)
+ * - Cosmetic corrections (Norbert Buchmuller) (Andre Correa)
+ *
+ *
+ * 2005/12/16 - IMQ versions between 2.6.7 and 2.6.13 were
+ * released with almost no problems. 2.6.14-x was released
+ * with some important changes: nfcache was removed; After
+ * some weeks of trouble we figured out that some IMQ fields
+ * in skb were missing in skbuff.c - skb_clone and copy_skb_header.
+ * These functions are correctly patched by this new patch version.
+ *
+ * Thanks for all who helped to figure out all the problems with
+ * 2.6.14.x: Patrick McHardy, Rune Kock, VeNoMouS, Max CtRiX,
+ * Kevin Shanahan, Richard Lucassen, Valery Dachev (hopefully
+ * I didn't forget anybody). I apologize again for my lack of time.
+ *
+ * More info at: http://www.linuximq.net/ (Andre Correa)
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/moduleparam.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/rtnetlink.h>
+#include <linux/if_arp.h>
+#include <linux/netfilter.h>
+#include <linux/netfilter_ipv4.h>
+#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
+ #include <linux/netfilter_ipv6.h>
+#endif
+#include <linux/imq.h>
+#include <net/pkt_sched.h>
+
+extern int qdisc_restart1(struct net_device *dev);
+
+static nf_hookfn imq_nf_hook;
+
+static struct nf_hook_ops imq_ingress_ipv4 = {
+ .hook = imq_nf_hook,
+ .owner = THIS_MODULE,
+ .pf = PF_INET,
+ .hooknum = NF_IP_PRE_ROUTING,
+#if defined(CONFIG_IMQ_BEHAVIOR_BA) || defined(CONFIG_IMQ_BEHAVIOR_BB)
+ .priority = NF_IP_PRI_MANGLE + 1
+#else
+ .priority = NF_IP_PRI_NAT_DST + 1
+#endif
+};
+
+static struct nf_hook_ops imq_egress_ipv4 = {
+ .hook = imq_nf_hook,
+ .owner = THIS_MODULE,
+ .pf = PF_INET,
+ .hooknum = NF_IP_POST_ROUTING,
+#if defined(CONFIG_IMQ_BEHAVIOR_AA) || defined(CONFIG_IMQ_BEHAVIOR_BA)
+ .priority = NF_IP_PRI_LAST
+#else
+ .priority = NF_IP_PRI_NAT_SRC - 1
+#endif
+};
+
+#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
+static struct nf_hook_ops imq_ingress_ipv6 = {
+ .hook = imq_nf_hook,
+ .owner = THIS_MODULE,
+ .pf = PF_INET6,
+ .hooknum = NF_IP6_PRE_ROUTING,
+#if defined(CONFIG_IMQ_BEHAVIOR_BA) || defined(CONFIG_IMQ_BEHAVIOR_BB)
+ .priority = NF_IP6_PRI_MANGLE + 1
+#else
+ .priority = NF_IP6_PRI_NAT_DST + 1
+#endif
+};
+
+static struct nf_hook_ops imq_egress_ipv6 = {
+ .hook = imq_nf_hook,
+ .owner = THIS_MODULE,
+ .pf = PF_INET6,
+ .hooknum = NF_IP6_POST_ROUTING,
+#if defined(CONFIG_IMQ_BEHAVIOR_AA) || defined(CONFIG_IMQ_BEHAVIOR_BA)
+ .priority = NF_IP6_PRI_LAST
+#else
+ .priority = NF_IP6_PRI_NAT_SRC - 1
+#endif
+};
+#endif
+
+#if defined(CONFIG_IMQ_NUM_DEVS)
+static unsigned int numdevs = CONFIG_IMQ_NUM_DEVS;
+#else
+static unsigned int numdevs = 2;
+#endif
+
+static struct net_device *imq_devs;
+
+static struct net_device_stats *imq_get_stats(struct net_device *dev)
+{
+ return (struct net_device_stats *)dev->priv;
+}
+
+/* called for packets kfree'd in qdiscs at places other than enqueue */
+static void imq_skb_destructor(struct sk_buff *skb)
+{
+ struct nf_info *info = skb->nf_info;
+
+ if (info) {
+ if (info->indev)
+ dev_put(info->indev);
+ if (info->outdev)
+ dev_put(info->outdev);
+ kfree(info);
+ }
+}
+
+static int imq_dev_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct net_device_stats *stats = (struct net_device_stats*) dev->priv;
+
+ stats->tx_bytes += skb->len;
+ stats->tx_packets++;
+
+ skb->imq_flags = 0;
+ skb->destructor = NULL;
+
+ dev->trans_start = jiffies;
+ nf_reinject(skb, skb->nf_info, NF_ACCEPT);
+ return 0;
+}
+
+static int imq_nf_queue(struct sk_buff *skb, struct nf_info *info, unsigned
queue_num, void *data)
+{
+ struct net_device *dev;
+ struct net_device_stats *stats;
+ struct sk_buff *skb2 = NULL;
+ struct Qdisc *q;
+ unsigned int index = skb->imq_flags&IMQ_F_IFMASK;
+ int ret = -1;
+
+ if (index > numdevs)
+ return -1;
+
+ dev = imq_devs + index;
+ if (!(dev->flags & IFF_UP)) {
+ skb->imq_flags = 0;
+ nf_reinject(skb, info, NF_ACCEPT);
+ return 0;
+ }
+ dev->last_rx = jiffies;
+
+ if (skb->destructor) {
+ skb2 = skb;
+ skb = skb_clone(skb, GFP_ATOMIC);
+ if (!skb)
+ return -1;
+ }
+ skb->nf_info = info;
+
+ stats = (struct net_device_stats *)dev->priv;
+ stats->rx_bytes+= skb->len;
+ stats->rx_packets++;
+
+ spin_lock_bh(&dev->queue_lock);
+ q = dev->qdisc;
+ if (q->enqueue) {
+ q->enqueue(skb_get(skb), q);
+ if (skb_shared(skb)) {
+ skb->destructor = imq_skb_destructor;
+ kfree_skb(skb);
+ ret = 0;
+ }
+ }
+ if (spin_is_locked(&dev->_xmit_lock))
+ netif_schedule(dev);
+ else
+
+ while (!netif_queue_stopped(dev) &&
+ qdisc_restart1(dev)<0)
+ /* NOTHING */;
+
+ spin_unlock_bh(&dev->queue_lock);
+
+ if (skb2)
+ kfree_skb(ret ? skb : skb2);
+
+ return ret;
+}
+
+static struct nf_queue_handler nfqh = {
+ .name = "imq",
+ .outfn = imq_nf_queue,
+};
+
+static unsigned int imq_nf_hook(unsigned int hook, struct sk_buff **pskb,
+ const struct net_device *indev,
+ const struct net_device *outdev,
+ int (*okfn)(struct sk_buff *))
+{
+ if ((*pskb)->imq_flags & IMQ_F_ENQUEUE)
+ return NF_QUEUE;
+
+ return NF_ACCEPT;
+}
+
+
+static int __init imq_init_hooks(void)
+{
+ int err;
+
+ err = nf_register_queue_handler(PF_INET, &nfqh);
+ if (err > 0)
+ goto err1;
+ if ((err = nf_register_hook(&imq_ingress_ipv4)))
+ goto err2;
+ if ((err = nf_register_hook(&imq_egress_ipv4)))
+ goto err3;
+#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
+ if ((err = nf_register_queue_handler(PF_INET6, &nfqh)))
+ goto err4;
+ if ((err = nf_register_hook(&imq_ingress_ipv6)))
+ goto err5;
+ if ((err = nf_register_hook(&imq_egress_ipv6)))
+ goto err6;
+#endif
+
+ return 0;
+
+#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
+err6:
+ nf_unregister_hook(&imq_ingress_ipv6);
+err5:
+ nf_unregister_queue_handler(PF_INET6);
+err4:
+ nf_unregister_hook(&imq_egress_ipv6);
+#endif
+err3:
+ nf_unregister_hook(&imq_ingress_ipv4);
+err2:
+ nf_unregister_queue_handler(PF_INET);
+err1:
+ 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);
+#endif
+ nf_unregister_hook(&imq_ingress_ipv4);
+ nf_unregister_hook(&imq_egress_ipv4);
+ nf_unregister_queue_handler(PF_INET);
+}
+
+static int __init imq_dev_init(struct net_device *dev)
+{
+ dev->hard_start_xmit = imq_dev_xmit;
+ dev->type = ARPHRD_VOID;
+ dev->mtu = 16000;
+ dev->tx_queue_len = 11000;
+ dev->flags = IFF_NOARP;
+ dev->priv = kmalloc(sizeof(struct net_device_stats), GFP_KERNEL);
+ if (dev->priv == NULL)
+ return -ENOMEM;
+ memset(dev->priv, 0, sizeof(struct net_device_stats));
+ dev->get_stats = imq_get_stats;
+
+ return 0;
+}
+
+static void imq_dev_uninit(struct net_device *dev)
+{
+ kfree(dev->priv);
+}
+
+static int __init imq_init_devs(void)
+{
+ struct net_device *dev;
+ int i,j;
+ j = numdevs;
+
+ if (!numdevs || numdevs > IMQ_MAX_DEVS) {
+ printk(KERN_ERR "IMQ: numdevs has to be betweed 1 and %u\n",
+ IMQ_MAX_DEVS);
+ return -EINVAL;
+ }
+
+ imq_devs = kmalloc(sizeof(struct net_device) * numdevs, GFP_KERNEL);
+ if (!imq_devs)
+ return -ENOMEM;
+ memset(imq_devs, 0, sizeof(struct net_device) * numdevs);
+
+ /* we start counting at zero */
+ numdevs--;
+
+ for (i = 0, dev = imq_devs; i <= numdevs; i++, dev++) {
+ SET_MODULE_OWNER(dev);
+ strcpy(dev->name, "imq%d");
+ dev->init = imq_dev_init;
+ dev->uninit = imq_dev_uninit;
+
+ if (register_netdev(dev) < 0)
+ goto err_register;
+ }
+ printk(KERN_INFO "IMQ starting with %u devices...\n", j);
+ 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;
+
+ for (i = 0; i <= numdevs; i++)
+ unregister_netdev(dev++);
+
+ kfree(imq_devs);
+}
+
+static int __init imq_init_module(void)
+{
+ int err;
+
+ if ((err = imq_init_devs())) {
+ printk(KERN_ERR "IMQ: Error trying imq_init_devs()\n");
+ return err;
+ }
+ if ((err = imq_init_hooks())) {
+ printk(KERN_ERR "IMQ: Error trying imq_init_hooks()\n");
+ imq_cleanup_devs();
+ return err;
+ }
+
+ printk(KERN_INFO "IMQ driver loaded successfully.\n");
+
+#if defined(CONFIG_IMQ_BEHAVIOR_BA) || defined(CONFIG_IMQ_BEHAVIOR_BB)
+ printk(KERN_INFO "\tHooking IMQ before NAT on PREROUTING.\n");
+#else
+ printk(KERN_INFO "\tHooking IMQ after NAT on PREROUTING.\n");
+#endif
+#if defined(CONFIG_IMQ_BEHAVIOR_AB) || defined(CONFIG_IMQ_BEHAVIOR_BB)
+ printk(KERN_INFO "\tHooking IMQ before NAT on POSTROUTING.\n");
+#else
+ printk(KERN_INFO "\tHooking IMQ after NAT on POSTROUTING.\n");
+#endif
+
+ return 0;
+}
+
+static void __exit imq_cleanup_module(void)
+{
+ imq_unhook();
+ imq_cleanup_devs();
+ printk(KERN_INFO "IMQ driver unloaded successfully.\n");
+}
+
+
+module_init(imq_init_module);
+module_exit(imq_cleanup_module);
+
+module_param(numdevs, int, 0);
+MODULE_PARM_DESC(numdevs, "number of IMQ devices (how many imq* devices will
be created)");
+MODULE_AUTHOR("http://www.linuximq.net";);
+MODULE_DESCRIPTION("Pseudo-driver for the intermediate queue device. See
http://www.linuximq.net/ for more information.");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/imq.h b/include/linux/imq.h
new file mode 100644
--- /dev/null
+++ b/include/linux/imq.h
@@ -0,0 +1,9 @@
+#ifndef _IMQ_H
+#define _IMQ_H
+
+#define IMQ_MAX_DEVS 16
+
+#define IMQ_F_IFMASK 0x7f
+#define IMQ_F_ENQUEUE 0x80
+
+#endif /* _IMQ_H */
diff --git a/include/linux/netfilter_ipv4/ipt_IMQ.h
b/include/linux/netfilter_ipv4/ipt_IMQ.h
new file mode 100644
--- /dev/null
+++ b/include/linux/netfilter_ipv4/ipt_IMQ.h
@@ -0,0 +1,8 @@
+#ifndef _IPT_IMQ_H
+#define _IPT_IMQ_H
+
+struct ipt_imq_info {
+ unsigned int todev; /* target imq device */
+};
+
+#endif /* _IPT_IMQ_H */
diff --git a/include/linux/netfilter_ipv6/ip6t_IMQ.h
b/include/linux/netfilter_ipv6/ip6t_IMQ.h
new file mode 100644
--- /dev/null
+++ b/include/linux/netfilter_ipv6/ip6t_IMQ.h
@@ -0,0 +1,8 @@
+#ifndef _IP6T_IMQ_H
+#define _IP6T_IMQ_H
+
+struct ip6t_imq_info {
+ unsigned int todev; /* target imq device */
+};
+
+#endif /* _IP6T_IMQ_H */
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -299,6 +299,10 @@
#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
struct sk_buff *nfct_reasm;
#endif
+#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
+ unsigned char imq_flags;
+ struct nf_info *nf_info;
+#endif
#ifdef CONFIG_BRIDGE_NETFILTER
struct nf_bridge_info *nf_bridge;
#endif
diff --git a/net/core/dev.c b/net/core/dev.c
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -94,6 +94,9 @@
#include <linux/skbuff.h>
#include <net/sock.h>
#include <linux/rtnetlink.h>
+#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
+#include <linux/imq.h>
+#endif
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/stat.h>
@@ -1349,7 +1352,11 @@
int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
if (likely(!skb->next)) {
- if (netdev_nit)
+ if (netdev_nit
+#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
+ && !(skb->imq_flags & IMQ_F_ENQUEUE)
+#endif
+ )
dev_queue_xmit_nit(skb, dev);
if (netif_needs_gso(dev, skb)) {
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -486,6 +486,10 @@
C(nfct_reasm);
nf_conntrack_get_reasm(skb->nfct_reasm);
#endif
+#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
+ C(imq_flags);
+ C(nf_info);
+#endif /*CONFIG_IMQ*/
#ifdef CONFIG_BRIDGE_NETFILTER
C(nf_bridge);
nf_bridge_get(skb->nf_bridge);
@@ -550,6 +554,10 @@
#if defined(CONFIG_IP_VS) || defined(CONFIG_IP_VS_MODULE)
new->ipvs_property = old->ipvs_property;
#endif
+#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
+ new->imq_flags = old->imq_flags;
+ new->nf_info = old->nf_info;
+#endif /*CONFIG_IMQ*/
#ifdef CONFIG_BRIDGE_NETFILTER
new->nf_bridge = old->nf_bridge;
nf_bridge_get(old->nf_bridge);
diff --git a/net/ipv4/netfilter/Kconfig b/net/ipv4/netfilter/Kconfig
--- a/net/ipv4/netfilter/Kconfig
+++ b/net/ipv4/netfilter/Kconfig
@@ -544,6 +544,17 @@
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
+ help
+ This option adds a `IMQ' target which is used to specify if and
+ to which IMQ device packets should get enqueued/dequeued.
+
+ For more information visit: http://www.linuximq.net/
+
+ To compile it as a module, choose M here. If unsure, say N.
+
config IP_NF_TARGET_TOS
tristate "TOS target support"
depends on IP_NF_MANGLE
diff --git a/net/ipv4/netfilter/Makefile b/net/ipv4/netfilter/Makefile
--- a/net/ipv4/netfilter/Makefile
+++ b/net/ipv4/netfilter/Makefile
@@ -69,6 +69,7 @@
obj-$(CONFIG_IP_NF_TARGET_TOS) += ipt_TOS.o
obj-$(CONFIG_IP_NF_TARGET_ECN) += ipt_ECN.o
obj-$(CONFIG_IP_NF_TARGET_DSCP) += ipt_DSCP.o
+obj-$(CONFIG_IP_NF_TARGET_IMQ) += ipt_IMQ.o
obj-$(CONFIG_IP_NF_TARGET_MASQUERADE) += ipt_MASQUERADE.o
obj-$(CONFIG_IP_NF_TARGET_REDIRECT) += ipt_REDIRECT.o
obj-$(CONFIG_IP_NF_TARGET_NETMAP) += ipt_NETMAP.o
diff --git a/net/ipv4/netfilter/ipt_IMQ.c b/net/ipv4/netfilter/ipt_IMQ.c
new file mode 100644
--- /dev/null
+++ b/net/ipv4/netfilter/ipt_IMQ.c
@@ -0,0 +1,83 @@
+/*
+ * This target marks packets to be enqueued to an imq device
+ */
+#include <linux/module.h>
+#include <linux/skbuff.h>
+#include <linux/netfilter_ipv4/ip_tables.h>
+#include <linux/netfilter_ipv4/ipt_IMQ.h>
+#include <linux/imq.h>
+
+static unsigned int imq_target(struct sk_buff **pskb,
+ const struct net_device *in,
+ const struct net_device *out,
+ unsigned int hooknum,
+ const struct xt_target *target,
+ const void *targinfo,
+ void *userdata)
+{
+ struct ipt_imq_info *mr = (struct ipt_imq_info*)targinfo;
+
+ (*pskb)->imq_flags = mr->todev | IMQ_F_ENQUEUE;
+
+ return IPT_CONTINUE;
+}
+
+static int imq_checkentry(const char *tablename,
+ const void *e,
+ const struct xt_target *target,
+ void *targinfo,
+ unsigned int targinfosize,
+ unsigned int hook_mask)
+{
+ struct ipt_imq_info *mr;
+
+ if (targinfosize != IPT_ALIGN(sizeof(struct ipt_imq_info))) {
+ printk(KERN_WARNING "IMQ: invalid targinfosize\n");
+ return 0;
+ }
+ mr = (struct ipt_imq_info*)targinfo;
+
+ if (strcmp(tablename, "mangle") != 0) {
+ printk(KERN_WARNING
+ "IMQ: IMQ can only be called from \"mangle\" table, not
\"%s\"\n",
+ tablename);
+ return 0;
+ }
+
+ if (mr->todev > IMQ_MAX_DEVS) {
+ printk(KERN_WARNING
+ "IMQ: invalid device specified, highest is %u\n",
+ IMQ_MAX_DEVS);
+ return 0;
+ }
+
+ return 1;
+}
+
+static struct ipt_target ipt_imq_reg = {
+ .name = "IMQ",
+ .target = imq_target,
+ .checkentry = imq_checkentry,
+ .me = THIS_MODULE,
+ .targetsize = sizeof(struct ipt_imq_info),
+};
+
+static int __init init(void)
+{
+ if (ipt_register_target(&ipt_imq_reg))
+ return -EINVAL;
+
+ return 0;
+}
+
+static void __exit fini(void)
+{
+ ipt_unregister_target(&ipt_imq_reg);
+}
+
+module_init(init);
+module_exit(fini);
+
+MODULE_AUTHOR("http://www.linuximq.net";);
+MODULE_DESCRIPTION("Pseudo-driver for the intermediate queue device. See
http://www.linuximq.net/ for more information.");
+MODULE_LICENSE("GPL");
diff --git a/net/ipv6/netfilter/Kconfig b/net/ipv6/netfilter/Kconfig
--- a/net/ipv6/netfilter/Kconfig
+++ b/net/ipv6/netfilter/Kconfig
@@ -163,6 +163,15 @@
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
+ help
+ This option adds a `IMQ' target which is used to specify if and
+ to which imq device packets should get enqueued/dequeued.
+
+ To compile it as a module, choose M here. If unsure, say N.
+
config IP6_NF_TARGET_HL
tristate 'HL (hoplimit) target support'
depends on IP6_NF_MANGLE
diff --git a/net/ipv6/netfilter/Makefile b/net/ipv6/netfilter/Makefile
--- a/net/ipv6/netfilter/Makefile
+++ b/net/ipv6/netfilter/Makefile
@@ -13,6 +13,7 @@
obj-$(CONFIG_IP6_NF_MATCH_OWNER) += ip6t_owner.o
obj-$(CONFIG_IP6_NF_FILTER) += ip6table_filter.o
obj-$(CONFIG_IP6_NF_MANGLE) += ip6table_mangle.o
+obj-$(CONFIG_IP6_NF_TARGET_IMQ) += ip6t_IMQ.o
obj-$(CONFIG_IP6_NF_TARGET_HL) += ip6t_HL.o
obj-$(CONFIG_IP6_NF_QUEUE) += ip6_queue.o
obj-$(CONFIG_IP6_NF_TARGET_LOG) += ip6t_LOG.o
diff --git a/net/ipv6/netfilter/ip6t_IMQ.c b/net/ipv6/netfilter/ip6t_IMQ.c
new file mode 100644
--- /dev/null
+++ b/net/ipv6/netfilter/ip6t_IMQ.c
@@ -0,0 +1,80 @@
+/*
+ * This target marks packets to be enqueued to an imq device
+ */
+#include <linux/module.h>
+#include <linux/skbuff.h>
+#include <linux/netfilter_ipv6/ip6_tables.h>
+#include <linux/netfilter_ipv6/ip6t_IMQ.h>
+#include <linux/imq.h>
+
+static unsigned int imq_target(struct sk_buff **pskb,
+ unsigned int hooknum,
+ const struct net_device *in,
+ const struct net_device *out,
+ const void *targinfo,
+ void *userdata)
+{
+ struct ip6t_imq_info *mr = (struct ip6t_imq_info*)targinfo;
+
+ (*pskb)->imq_flags = mr->todev | IMQ_F_ENQUEUE;
+
+ return IP6T_CONTINUE;
+}
+
+static int imq_checkentry(const char *tablename,
+ const struct ip6t_entry *e,
+ void *targinfo,
+ unsigned int targinfosize,
+ unsigned int hook_mask)
+{
+ struct ip6t_imq_info *mr;
+
+ if (targinfosize != IP6T_ALIGN(sizeof(struct ip6t_imq_info))) {
+ printk(KERN_WARNING "IMQ: invalid targinfosize\n");
+ return 0;
+ }
+ mr = (struct ip6t_imq_info*)targinfo;
+
+ if (strcmp(tablename, "mangle") != 0) {
+ printk(KERN_WARNING
+ "IMQ: IMQ can only be called from \"mangle\" table, not
\"%s\"\n",
+ tablename);
+ return 0;
+ }
+
+ if (mr->todev > IMQ_MAX_DEVS) {
+ printk(KERN_WARNING
+ "IMQ: invalid device specified, highest is %u\n",
+ IMQ_MAX_DEVS);
+ return 0;
+ }
+
+ return 1;
+}
+
+static struct ip6t_target ip6t_imq_reg = {
+ .name = "IMQ",
+ .target = imq_target,
+ .checkentry = imq_checkentry,
+ .me = THIS_MODULE
+};
+
+static int __init init(void)
+{
+ if (ip6t_register_target(&ip6t_imq_reg))
+ return -EINVAL;
+
+ return 0;
+}
+
+static void __exit fini(void)
+{
+ ip6t_unregister_target(&ip6t_imq_reg);
+}
+
+module_init(init);
+module_exit(fini);
+
+MODULE_AUTHOR("http://www.linuximq.net";);
+MODULE_DESCRIPTION("Pseudo-driver for the intermediate queue device. See
http://www.linuximq.net/ for more information.");
+MODULE_LICENSE("GPL");
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -87,7 +87,6 @@
NOTE: Called under dev->queue_lock with locally disabled BH.
*/
-
static inline int qdisc_restart(struct net_device *dev)
{
struct Qdisc *q = dev->qdisc;
@@ -181,6 +180,11 @@
return q->q.qlen;
}
+int qdisc_restart1(struct net_device *dev)
+{
+ return qdisc_restart(dev);
+}
+
void __qdisc_run(struct net_device *dev)
{
if (unlikely(dev->qdisc == &noop_qdisc))
@@ -617,3 +621,4 @@
EXPORT_SYMBOL(qdisc_reset);
EXPORT_SYMBOL(qdisc_lock_tree);
EXPORT_SYMBOL(qdisc_unlock_tree);
+EXPORT_SYMBOL(qdisc_restart1);
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