Commit message: [NETLINK]: Missing padding fields in dumped structures

Plug holes with padding fields and initialized them to zero.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
CVE: CVE-2005-4881
CWE: CWE-200
Vulnerability description: The netlink subsystem in the Linux kernel 2.4.x before 2.4.37.6 and 2.6.x before 2.6.13-rc1 does not initialize certain padding fields in structures, which might allow local users to obtain sensitive information from kernel memory via unspecified vectors, related to the (1) tc_fill_qdisc, (2) tcf_fill_node, (3) neightbl_fill_info, (4) neightbl_fill_param_info, (5) neigh_fill_info, (6) rtnetlink_fill_ifinfo, (7) rtnetlink_fill_iwinfo, (8) vif_delete, (9) ipmr_destroy_unres, (10) ipmr_cache_alloc_unres, (11) ipmr_cache_resolve, (12) inet6_fill_ifinfo, (13) tca_get_fill, (14) tca_action_flush, (15) tcf_add_notify, (16) tc_dump_action, (17) cbq_dump_police, (18) __nlmsg_put, (19) __rta_fill, (20) __rta_reserve, (21) inet6_fill_prefix, (22) rsvp_dump, and (23) cbq_dump_ovl functions.

Project: linux-2.6

static void inline ipv6_store_devconf(struct ipv6_devconf *cnf,
				__s32 *array, int bytes)
{
	memset(array, 0, bytes);
	array[DEVCONF_FORWARDING] = cnf->forwarding;
	array[DEVCONF_HOPLIMIT] = cnf->hop_limit;
	array[DEVCONF_MTU6] = cnf->mtu6;
	array[DEVCONF_ACCEPT_RA] = cnf->accept_ra;
	array[DEVCONF_ACCEPT_REDIRECTS] = cnf->accept_redirects;
	array[DEVCONF_AUTOCONF] = cnf->autoconf;
	array[DEVCONF_DAD_TRANSMITS] = cnf->dad_transmits;
	array[DEVCONF_RTR_SOLICITS] = cnf->rtr_solicits;
	array[DEVCONF_RTR_SOLICIT_INTERVAL] = cnf->rtr_solicit_interval;
	array[DEVCONF_RTR_SOLICIT_DELAY] = cnf->rtr_solicit_delay;
	array[DEVCONF_FORCE_MLD_VERSION] = cnf->force_mld_version;
#ifdef CONFIG_IPV6_PRIVACY
	array[DEVCONF_USE_TEMPADDR] = cnf->use_tempaddr;
	array[DEVCONF_TEMP_VALID_LFT] = cnf->temp_valid_lft;
	array[DEVCONF_TEMP_PREFERED_LFT] = cnf->temp_prefered_lft;
	array[DEVCONF_REGEN_MAX_RETRY] = cnf->regen_max_retry;
	array[DEVCONF_MAX_DESYNC_FACTOR] = cnf->max_desync_factor;
#endif
	array[DEVCONF_MAX_ADDRESSES] = cnf->max_addresses;
}

Project: linux-2.6

static int if6_seq_open(struct inode *inode, struct file *file)
{
	struct seq_file *seq;
	int rc = -ENOMEM;
	struct if6_iter_state *s = kmalloc(sizeof(*s), GFP_KERNEL);

	if (!s)
		goto out;
	memset(s, 0, sizeof(*s));

	rc = seq_open(file, &if6_seq_ops);
	if (rc)
		goto out_kfree;

	seq = file->private_data;
	seq->private = s;
out:
	return rc;
out_kfree:
	kfree(s);
	goto out;
}

Project: linux-2.6

static struct inet6_ifaddr *if6_get_first(struct seq_file *seq)
{
	struct inet6_ifaddr *ifa = NULL;
	struct if6_iter_state *state = seq->private;

	for (state->bucket = 0; state->bucket < IN6_ADDR_HSIZE; ++state->bucket) {
		ifa = inet6_addr_lst[state->bucket];
		if (ifa)
			break;
	}
	return ifa;
}

Project: linux-2.6

static int rsvp_delete(struct tcf_proto *tp, unsigned long arg)
{
	struct rsvp_filter **fp, *f = (struct rsvp_filter*)arg;
	unsigned h = f->handle;
	struct rsvp_session **sp;
	struct rsvp_session *s = f->sess;
	int i;

	for (fp = &s->ht[(h>>8)&0xFF]; *fp; fp = &(*fp)->next) {
		if (*fp == f) {
			tcf_tree_lock(tp);
			*fp = f->next;
			tcf_tree_unlock(tp);
			rsvp_delete_filter(tp, f);

			/* Strip tree */

			for (i=0; i<=16; i++)
				if (s->ht[i])
					return 0;

			/* OK, session has no flows */
			for (sp = &((struct rsvp_head*)tp->root)->ht[h&0xFF];
			     *sp; sp = &(*sp)->next) {
				if (*sp == s) {
					tcf_tree_lock(tp);
					*sp = s->next;
					tcf_tree_unlock(tp);

					kfree(s);
					return 0;
				}
			}

			return 0;
		}
	}
	return 0;
}

Project: linux-2.6

cbq_dump_stats(struct Qdisc *sch, struct gnet_dump *d)
{
	struct cbq_sched_data *q = qdisc_priv(sch);

	q->link.xstats.avgidle = q->link.avgidle;
	return gnet_stats_copy_app(d, &q->link.xstats, sizeof(q->link.xstats));
}

Project: linux-2.6

static int rsvp_change(struct tcf_proto *tp, unsigned long base,
		       u32 handle,
		       struct rtattr **tca,
		       unsigned long *arg)
{
	struct rsvp_head *data = tp->root;
	struct rsvp_filter *f, **fp;
	struct rsvp_session *s, **sp;
	struct tc_rsvp_pinfo *pinfo = NULL;
	struct rtattr *opt = tca[TCA_OPTIONS-1];
	struct rtattr *tb[TCA_RSVP_MAX];
	struct tcf_exts e;
	unsigned h1, h2;
	u32 *dst;
	int err;

	if (opt == NULL)
		return handle ? -EINVAL : 0;

	if (rtattr_parse_nested(tb, TCA_RSVP_MAX, opt) < 0)
		return -EINVAL;

	err = tcf_exts_validate(tp, tb, tca[TCA_RATE-1], &e, &rsvp_ext_map);
	if (err < 0)
		return err;

	if ((f = (struct rsvp_filter*)*arg) != NULL) {
		/* Node exists: adjust only classid */

		if (f->handle != handle && handle)
			goto errout2;
		if (tb[TCA_RSVP_CLASSID-1]) {
			f->res.classid = *(u32*)RTA_DATA(tb[TCA_RSVP_CLASSID-1]);
			tcf_bind_filter(tp, &f->res, base);
		}

		tcf_exts_change(tp, &f->exts, &e);
		return 0;
	}

	/* Now more serious part... */
	err = -EINVAL;
	if (handle)
		goto errout2;
	if (tb[TCA_RSVP_DST-1] == NULL)
		goto errout2;

	err = -ENOBUFS;
	f = kmalloc(sizeof(struct rsvp_filter), GFP_KERNEL);
	if (f == NULL)
		goto errout2;

	memset(f, 0, sizeof(*f));
	h2 = 16;
	if (tb[TCA_RSVP_SRC-1]) {
		err = -EINVAL;
		if (RTA_PAYLOAD(tb[TCA_RSVP_SRC-1]) != sizeof(f->src))
			goto errout;
		memcpy(f->src, RTA_DATA(tb[TCA_RSVP_SRC-1]), sizeof(f->src));
		h2 = hash_src(f->src);
	}
	if (tb[TCA_RSVP_PINFO-1]) {
		err = -EINVAL;
		if (RTA_PAYLOAD(tb[TCA_RSVP_PINFO-1]) < sizeof(struct tc_rsvp_pinfo))
			goto errout;
		pinfo = RTA_DATA(tb[TCA_RSVP_PINFO-1]);
		f->spi = pinfo->spi;
		f->tunnelhdr = pinfo->tunnelhdr;
	}
	if (tb[TCA_RSVP_CLASSID-1]) {
		err = -EINVAL;
		if (RTA_PAYLOAD(tb[TCA_RSVP_CLASSID-1]) != 4)
			goto errout;
		f->res.classid = *(u32*)RTA_DATA(tb[TCA_RSVP_CLASSID-1]);
	}

	err = -EINVAL;
	if (RTA_PAYLOAD(tb[TCA_RSVP_DST-1]) != sizeof(f->src))
		goto errout;
	dst = RTA_DATA(tb[TCA_RSVP_DST-1]);
	h1 = hash_dst(dst, pinfo ? pinfo->protocol : 0, pinfo ? pinfo->tunnelid : 0);

	err = -ENOMEM;
	if ((f->handle = gen_handle(tp, h1 | (h2<<8))) == 0)
		goto errout;

	if (f->tunnelhdr) {
		err = -EINVAL;
		if (f->res.classid > 255)
			goto errout;

		err = -ENOMEM;
		if (f->res.classid == 0 &&
		    (f->res.classid = gen_tunnel(data)) == 0)
			goto errout;
	}

	for (sp = &data->ht[h1]; (s=*sp) != NULL; sp = &s->next) {
		if (dst[RSVP_DST_LEN-1] == s->dst[RSVP_DST_LEN-1] &&
		    pinfo && pinfo->protocol == s->protocol &&
		    memcmp(&pinfo->dpi, &s->dpi, sizeof(s->dpi)) == 0
#if RSVP_DST_LEN == 4
		    && dst[0] == s->dst[0]
		    && dst[1] == s->dst[1]
		    && dst[2] == s->dst[2]
#endif
		    && pinfo->tunnelid == s->tunnelid) {

insert:
			/* OK, we found appropriate session */

			fp = &s->ht[h2];

			f->sess = s;
			if (f->tunnelhdr == 0)
				tcf_bind_filter(tp, &f->res, base);

			tcf_exts_change(tp, &f->exts, &e);

			for (fp = &s->ht[h2]; *fp; fp = &(*fp)->next)
				if (((*fp)->spi.mask&f->spi.mask) != f->spi.mask)
					break;
			f->next = *fp;
			wmb();
			*fp = f;

			*arg = (unsigned long)f;
			return 0;
		}
	}

	/* No session found. Create new one. */

	err = -ENOBUFS;
	s = kmalloc(sizeof(struct rsvp_session), GFP_KERNEL);
	if (s == NULL)
		goto errout;
	memset(s, 0, sizeof(*s));
	memcpy(s->dst, dst, sizeof(s->dst));

	if (pinfo) {
		s->dpi = pinfo->dpi;
		s->protocol = pinfo->protocol;
		s->tunnelid = pinfo->tunnelid;
	}
	for (sp = &data->ht[h1]; *sp; sp = &(*sp)->next) {
		if (((*sp)->dpi.mask&s->dpi.mask) != s->dpi.mask)
			break;
	}
	s->next = *sp;
	wmb();
	*sp = s;
	
	goto insert;

errout:
	if (f)
		kfree(f);
errout2:
	tcf_exts_destroy(tp, &e);
	return err;
}

Project: linux-2.6

int addrconf_del_ifaddr(void __user *arg)
{
	struct in6_ifreq ireq;
	int err;
	
	if (!capable(CAP_NET_ADMIN))
		return -EPERM;

	if (copy_from_user(&ireq, arg, sizeof(struct in6_ifreq)))
		return -EFAULT;

	rtnl_lock();
	err = inet6_addr_del(ireq.ifr6_ifindex, &ireq.ifr6_addr, ireq.ifr6_prefixlen);
	rtnl_unlock();
	return err;
}

Project: linux-2.6

static void if6_seq_stop(struct seq_file *seq, void *v)
{
	read_unlock_bh(&addrconf_hash_lock);
}

Project: linux-2.6

cbq_enqueue(struct sk_buff *skb, struct Qdisc *sch)
{
	struct cbq_sched_data *q = qdisc_priv(sch);
	int len = skb->len;
	int ret;
	struct cbq_class *cl = cbq_classify(skb, sch, &ret);

#ifdef CONFIG_NET_CLS_POLICE
	q->rx_class = cl;
#endif
	if (cl == NULL) {
		if (ret == NET_XMIT_DROP)
			sch->qstats.drops++;
		kfree_skb(skb);
		return ret;
	}

#ifdef CONFIG_NET_CLS_POLICE
	cl->q->__parent = sch;
#endif
	if ((ret = cl->q->enqueue(skb, cl->q)) == NET_XMIT_SUCCESS) {
		sch->q.qlen++;
		sch->bstats.packets++;
		sch->bstats.bytes+=len;
		cbq_mark_toplevel(q, cl);
		if (!cl->next_alive)
			cbq_activate_class(cl);
		return ret;
	}

	sch->qstats.drops++;
	cbq_mark_toplevel(q, cl);
	cl->qstats.drops++;
	return ret;
}

Project: linux-2.6

cbq_reclassify(struct sk_buff *skb, struct cbq_class *this)
{
	struct cbq_class *cl, *new;

	for (cl = this->tparent; cl; cl = cl->tparent)
		if ((new = cl->defaults[TC_PRIO_BESTEFFORT]) != NULL && new != this)
			return new;

	return NULL;
}

Project: linux-2.6

static void addrconf_dad_completed(struct inet6_ifaddr *ifp)
{
	struct net_device *	dev = ifp->idev->dev;

	/*
	 *	Configure the address for reception. Now it is valid.
	 */

	ipv6_ifa_notify(RTM_NEWADDR, ifp);

	/* If added prefix is link local and forwarding is off,
	   start sending router solicitations.
	 */

	if (ifp->idev->cnf.forwarding == 0 &&
	    ifp->idev->cnf.rtr_solicits > 0 &&
	    (dev->flags&IFF_LOOPBACK) == 0 &&
	    (ipv6_addr_type(&ifp->addr) & IPV6_ADDR_LINKLOCAL)) {
		struct in6_addr all_routers;

		ipv6_addr_all_routers(&all_routers);

		/*
		 *	If a host as already performed a random delay
		 *	[...] as part of DAD [...] there is no need
		 *	to delay again before sending the first RS
		 */
		ndisc_send_rs(ifp->idev->dev, &ifp->addr, &all_routers);

		spin_lock_bh(&ifp->lock);
		ifp->probes = 1;
		ifp->idev->if_flags |= IF_RS_SENT;
		addrconf_mod_timer(ifp, AC_RS, ifp->idev->cnf.rtr_solicit_interval);
		spin_unlock_bh(&ifp->lock);
	}
}

Project: linux-2.6

int register_inet6addr_notifier(struct notifier_block *nb)
{
        return notifier_chain_register(&inet6addr_chain, nb);
}

Project: linux-2.6

static int addrconf_ifdown(struct net_device *dev, int how)
{
	struct inet6_dev *idev;
	struct inet6_ifaddr *ifa, **bifa;
	int i;

	ASSERT_RTNL();

	if (dev == &loopback_dev && how == 1)
		how = 0;

	rt6_ifdown(dev);
	neigh_ifdown(&nd_tbl, dev);

	idev = __in6_dev_get(dev);
	if (idev == NULL)
		return -ENODEV;

	/* Step 1: remove reference to ipv6 device from parent device.
	           Do not dev_put!
	 */
	if (how == 1) {
		write_lock_bh(&addrconf_lock);
		dev->ip6_ptr = NULL;
		idev->dead = 1;
		write_unlock_bh(&addrconf_lock);

		/* Step 1.5: remove snmp6 entry */
		snmp6_unregister_dev(idev);

	}

	/* Step 2: clear hash table */
	for (i=0; i<IN6_ADDR_HSIZE; i++) {
		bifa = &inet6_addr_lst[i];

		write_lock_bh(&addrconf_hash_lock);
		while ((ifa = *bifa) != NULL) {
			if (ifa->idev == idev) {
				*bifa = ifa->lst_next;
				ifa->lst_next = NULL;
				addrconf_del_timer(ifa);
				in6_ifa_put(ifa);
				continue;
			}
			bifa = &ifa->lst_next;
		}
		write_unlock_bh(&addrconf_hash_lock);
	}

	write_lock_bh(&idev->lock);

	/* Step 3: clear flags for stateless addrconf */
	if (how != 1)
		idev->if_flags &= ~(IF_RS_SENT|IF_RA_RCVD);

	/* Step 4: clear address list */
#ifdef CONFIG_IPV6_PRIVACY
	if (how == 1 && del_timer(&idev->regen_timer))
		in6_dev_put(idev);

	/* clear tempaddr list */
	while ((ifa = idev->tempaddr_list) != NULL) {
		idev->tempaddr_list = ifa->tmp_next;
		ifa->tmp_next = NULL;
		ifa->dead = 1;
		write_unlock_bh(&idev->lock);
		spin_lock_bh(&ifa->lock);

		if (ifa->ifpub) {
			in6_ifa_put(ifa->ifpub);
			ifa->ifpub = NULL;
		}
		spin_unlock_bh(&ifa->lock);
		in6_ifa_put(ifa);
		write_lock_bh(&idev->lock);
	}
#endif
	while ((ifa = idev->addr_list) != NULL) {
		idev->addr_list = ifa->if_next;
		ifa->if_next = NULL;
		ifa->dead = 1;
		addrconf_del_timer(ifa);
		write_unlock_bh(&idev->lock);

		__ipv6_ifa_notify(RTM_DELADDR, ifa);
		in6_ifa_put(ifa);

		write_lock_bh(&idev->lock);
	}
	write_unlock_bh(&idev->lock);

	/* Step 5: Discard multicast list */

	if (how == 1)
		ipv6_mc_destroy_dev(idev);
	else
		ipv6_mc_down(idev);

	/* Step 5: netlink notification of this interface */
	idev->tstamp = jiffies;
	inet6_ifinfo_notify(RTM_NEWLINK, idev);
	
	/* Shot the device (if unregistered) */

	if (how == 1) {
#ifdef CONFIG_SYSCTL
		addrconf_sysctl_unregister(&idev->cnf);
		neigh_sysctl_unregister(idev->nd_parms);
#endif
		neigh_parms_release(&nd_tbl, idev->nd_parms);
		neigh_ifdown(&nd_tbl, dev);
		in6_dev_put(idev);
	}
	return 0;
}

Project: linux-2.6

static __inline__ int cbq_dump_police(struct sk_buff *skb, struct cbq_class *cl)
{
	unsigned char	 *b = skb->tail;
	struct tc_cbq_police opt;

	if (cl->police) {
		opt.police = cl->police;
		opt.__res1 = 0;
		opt.__res2 = 0;
		RTA_PUT(skb, TCA_CBQ_POLICE, sizeof(opt), &opt);
	}
	return skb->len;

rtattr_failure:
	skb_trim(skb, b - skb->data);
	return -1;
}

Project: linux-2.6

rsvp_delete_filter(struct tcf_proto *tp, struct rsvp_filter *f)
{
	tcf_unbind_filter(tp, &f->res);
	tcf_exts_destroy(tp, &f->exts);
	kfree(f);
}

Project: linux-2.6

static void cbq_ovl_drop(struct cbq_class *cl)
{
	if (cl->q->ops->drop)
		if (cl->q->ops->drop(cl->q))
			cl->qdisc->q.qlen--;
	cl->xstats.overactions++;
	cbq_ovl_classic(cl);
}

Project: linux-2.6

cbq_dequeue_prio(struct Qdisc *sch, int prio)
{
	struct cbq_sched_data *q = qdisc_priv(sch);
	struct cbq_class *cl_tail, *cl_prev, *cl;
	struct sk_buff *skb;
	int deficit;

	cl_tail = cl_prev = q->active[prio];
	cl = cl_prev->next_alive;

	do {
		deficit = 0;

		/* Start round */
		do {
			struct cbq_class *borrow = cl;

			if (cl->q->q.qlen &&
			    (borrow = cbq_under_limit(cl)) == NULL)
				goto skip_class;

			if (cl->deficit <= 0) {
				/* Class exhausted its allotment per
				   this round. Switch to the next one.
				 */
				deficit = 1;
				cl->deficit += cl->quantum;
				goto next_class;
			}

			skb = cl->q->dequeue(cl->q);

			/* Class did not give us any skb :-(
			   It could occur even if cl->q->q.qlen != 0 
			   f.e. if cl->q == "tbf"
			 */
			if (skb == NULL)
				goto skip_class;

			cl->deficit -= skb->len;
			q->tx_class = cl;
			q->tx_borrowed = borrow;
			if (borrow != cl) {
#ifndef CBQ_XSTATS_BORROWS_BYTES
				borrow->xstats.borrows++;
				cl->xstats.borrows++;
#else
				borrow->xstats.borrows += skb->len;
				cl->xstats.borrows += skb->len;
#endif
			}
			q->tx_len = skb->len;

			if (cl->deficit <= 0) {
				q->active[prio] = cl;
				cl = cl->next_alive;
				cl->deficit += cl->quantum;
			}
			return skb;

skip_class:
			if (cl->q->q.qlen == 0 || prio != cl->cpriority) {
				/* Class is empty or penalized.
				   Unlink it from active chain.
				 */
				cl_prev->next_alive = cl->next_alive;
				cl->next_alive = NULL;

				/* Did cl_tail point to it? */
				if (cl == cl_tail) {
					/* Repair it! */
					cl_tail = cl_prev;

					/* Was it the last class in this band? */
					if (cl == cl_tail) {
						/* Kill the band! */
						q->active[prio] = NULL;
						q->activemask &= ~(1<<prio);
						if (cl->q->q.qlen)
							cbq_activate_class(cl);
						return NULL;
					}

					q->active[prio] = cl_tail;
				}
				if (cl->q->q.qlen)
					cbq_activate_class(cl);

				cl = cl_prev;
			}

next_class:
			cl_prev = cl;
			cl = cl->next_alive;
		} while (cl_prev != cl_tail);
	} while (deficit);

	q->active[prio] = cl_prev;

	return NULL;
}

Project: linux-2.6

static int __init cbq_module_init(void)
{
	return register_qdisc(&cbq_qdisc_ops);
}

Project: linux-2.6

int __init if6_proc_init(void)
{
	if (!proc_net_fops_create("if_inet6", S_IRUGO, &if6_fops))
		return -ENOMEM;
	return 0;
}

Project: linux-2.6

static void sit_add_v4_addrs(struct inet6_dev *idev)
{
	struct inet6_ifaddr * ifp;
	struct in6_addr addr;
	struct net_device *dev;
	int scope;

	ASSERT_RTNL();

	memset(&addr, 0, sizeof(struct in6_addr));
	memcpy(&addr.s6_addr32[3], idev->dev->dev_addr, 4);

	if (idev->dev->flags&IFF_POINTOPOINT) {
		addr.s6_addr32[0] = htonl(0xfe800000);
		scope = IFA_LINK;
	} else {
		scope = IPV6_ADDR_COMPATv4;
	}

	if (addr.s6_addr32[3]) {
		ifp = ipv6_add_addr(idev, &addr, 128, scope, IFA_F_PERMANENT);
		if (!IS_ERR(ifp)) {
			spin_lock_bh(&ifp->lock);
			ifp->flags &= ~IFA_F_TENTATIVE;
			spin_unlock_bh(&ifp->lock);
			ipv6_ifa_notify(RTM_NEWADDR, ifp);
			in6_ifa_put(ifp);
		}
		return;
	}

        for (dev = dev_base; dev != NULL; dev = dev->next) {
		struct in_device * in_dev = __in_dev_get(dev);
		if (in_dev && (dev->flags & IFF_UP)) {
			struct in_ifaddr * ifa;

			int flag = scope;

			for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
				int plen;

				addr.s6_addr32[3] = ifa->ifa_local;

				if (ifa->ifa_scope == RT_SCOPE_LINK)
					continue;
				if (ifa->ifa_scope >= RT_SCOPE_HOST) {
					if (idev->dev->flags&IFF_POINTOPOINT)
						continue;
					flag |= IFA_HOST;
				}
				if (idev->dev->flags&IFF_POINTOPOINT)
					plen = 64;
				else
					plen = 96;

				ifp = ipv6_add_addr(idev, &addr, plen, flag,
						    IFA_F_PERMANENT);
				if (!IS_ERR(ifp)) {
					spin_lock_bh(&ifp->lock);
					ifp->flags &= ~IFA_F_TENTATIVE;
					spin_unlock_bh(&ifp->lock);
					ipv6_ifa_notify(RTM_NEWADDR, ifp);
					in6_ifa_put(ifp);
				}
			}
		}
        }
}

Project: linux-2.6

static int inet6_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
{
	int idx, err;
	int s_idx = cb->args[0];
	struct net_device *dev;
	struct inet6_dev *idev;

	read_lock(&dev_base_lock);
	for (dev=dev_base, idx=0; dev; dev = dev->next, idx++) {
		if (idx < s_idx)
			continue;
		if ((idev = in6_dev_get(dev)) == NULL)
			continue;
		err = inet6_fill_ifinfo(skb, idev, NETLINK_CB(cb->skb).pid, 
				cb->nlh->nlmsg_seq, RTM_NEWLINK, NLM_F_MULTI);
		in6_dev_put(idev);
		if (err <= 0)
			break;
	}
	read_unlock(&dev_base_lock);
	cb->args[0] = idx;

	return skb->len;
}

Project: linux-2.6

static struct inet6_ifaddr *if6_get_idx(struct seq_file *seq, loff_t pos)
{
	struct inet6_ifaddr *ifa = if6_get_first(seq);

	if (ifa)
		while(pos && (ifa = if6_get_next(seq, ifa)) != NULL)
			--pos;
	return pos ? NULL : ifa;
}

Project: linux-2.6

void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp)
{
	BUG_TRAP(ifp->if_next==NULL);
	BUG_TRAP(ifp->lst_next==NULL);
#ifdef NET_REFCNT_DEBUG
	printk(KERN_DEBUG "inet6_ifa_finish_destroy\n");
#endif

	in6_dev_put(ifp->idev);

	if (del_timer(&ifp->timer))
		printk("Timer is still running, when freeing ifa=%p\n", ifp);

	if (!ifp->dead) {
		printk("Freeing alive inet6 address %p\n", ifp);
		return;
	}
	dst_release(&ifp->rt->u.dst);

	kfree(ifp);
}

Project: linux-2.6

static int inet6_addr_add(int ifindex, struct in6_addr *pfx, int plen)
{
	struct inet6_ifaddr *ifp;
	struct inet6_dev *idev;
	struct net_device *dev;
	int scope;

	ASSERT_RTNL();
	
	if ((dev = __dev_get_by_index(ifindex)) == NULL)
		return -ENODEV;
	
	if (!(dev->flags&IFF_UP))
		return -ENETDOWN;

	if ((idev = addrconf_add_dev(dev)) == NULL)
		return -ENOBUFS;

	scope = ipv6_addr_scope(pfx);

	ifp = ipv6_add_addr(idev, pfx, plen, scope, IFA_F_PERMANENT);
	if (!IS_ERR(ifp)) {
		addrconf_dad_start(ifp, 0);
		in6_ifa_put(ifp);
		return 0;
	}

	return PTR_ERR(ifp);
}

Project: linux-2.6

static struct inet6_dev *addrconf_add_dev(struct net_device *dev)
{
	struct inet6_dev *idev;

	ASSERT_RTNL();

	if ((idev = ipv6_find_idev(dev)) == NULL)
		return NULL;

	/* Add default multicast route */
	addrconf_add_mroute(dev);

	/* Add link local route */
	addrconf_add_lroute(dev);
	return idev;
}

Project: linux-2.6

cbq_class_lookup(struct cbq_sched_data *q, u32 classid)
{
	struct cbq_class *cl;

	for (cl = q->classes[cbq_hash(classid)]; cl; cl = cl->next)
		if (cl->classid == classid)
			return cl;
	return NULL;
}

Project: linux-2.6

static void ip6_tnl_add_linklocal(struct inet6_dev *idev)
{
	struct net_device *link_dev;

	/* first try to inherit the link-local address from the link device */
	if (idev->dev->iflink &&
	    (link_dev = __dev_get_by_index(idev->dev->iflink))) {
		if (!ipv6_inherit_linklocal(idev, link_dev))
			return;
	}
	/* then try to inherit it from any device */
	for (link_dev = dev_base; link_dev; link_dev = link_dev->next) {
		if (!ipv6_inherit_linklocal(idev, link_dev))
			return;
	}
	printk(KERN_DEBUG "init ip6-ip6: add_linklocal failed\n");
}

Project: linux-2.6

static void addrconf_sysctl_unregister(struct ipv6_devconf *p)
{
	if (p->sysctl) {
		struct addrconf_sysctl_table *t = p->sysctl;
		p->sysctl = NULL;
		unregister_sysctl_table(t->sysctl_header);
		kfree(t->addrconf_dev[0].procname);
		kfree(t);
	}
}

Project: linux-2.6

static void cbq_watchdog(unsigned long arg)
{
	struct Qdisc *sch = (struct Qdisc*)arg;

	sch->flags &= ~TCQ_F_THROTTLED;
	netif_schedule(sch->dev);
}

Project: linux-2.6

static u32 gen_tunnel(struct rsvp_head *data)
{
	int i, k;

	for (k=0; k<2; k++) {
		for (i=255; i>0; i--) {
			if (++data->tgenerator == 0)
				data->tgenerator = 1;
			if (tunnel_bts(data))
				return data->tgenerator;
		}
		tunnel_recycle(data);
	}
	return 0;
}

Project: linux-2.6

static int rsvp_classify(struct sk_buff *skb, struct tcf_proto *tp,
			 struct tcf_result *res)
{
	struct rsvp_session **sht = ((struct rsvp_head*)tp->root)->ht;
	struct rsvp_session *s;
	struct rsvp_filter *f;
	unsigned h1, h2;
	u32 *dst, *src;
	u8 protocol;
	u8 tunnelid = 0;
	u8 *xprt;
#if RSVP_DST_LEN == 4
	struct ipv6hdr *nhptr = skb->nh.ipv6h;
#else
	struct iphdr *nhptr = skb->nh.iph;
#endif

restart:

#if RSVP_DST_LEN == 4
	src = &nhptr->saddr.s6_addr32[0];
	dst = &nhptr->daddr.s6_addr32[0];
	protocol = nhptr->nexthdr;
	xprt = ((u8*)nhptr) + sizeof(struct ipv6hdr);
#else
	src = &nhptr->saddr;
	dst = &nhptr->daddr;
	protocol = nhptr->protocol;
	xprt = ((u8*)nhptr) + (nhptr->ihl<<2);
	if (nhptr->frag_off&__constant_htons(IP_MF|IP_OFFSET))
		return -1;
#endif

	h1 = hash_dst(dst, protocol, tunnelid);
	h2 = hash_src(src);

	for (s = sht[h1]; s; s = s->next) {
		if (dst[RSVP_DST_LEN-1] == s->dst[RSVP_DST_LEN-1] &&
		    protocol == s->protocol &&
		    !(s->dpi.mask & (*(u32*)(xprt+s->dpi.offset)^s->dpi.key))
#if RSVP_DST_LEN == 4
		    && dst[0] == s->dst[0]
		    && dst[1] == s->dst[1]
		    && dst[2] == s->dst[2]
#endif
		    && tunnelid == s->tunnelid) {

			for (f = s->ht[h2]; f; f = f->next) {
				if (src[RSVP_DST_LEN-1] == f->src[RSVP_DST_LEN-1] &&
				    !(f->spi.mask & (*(u32*)(xprt+f->spi.offset)^f->spi.key))
#if RSVP_DST_LEN == 4
				    && src[0] == f->src[0]
				    && src[1] == f->src[1]
				    && src[2] == f->src[2]
#endif
				    ) {
					*res = f->res;
					RSVP_APPLY_RESULT();

matched:
					if (f->tunnelhdr == 0)
						return 0;

					tunnelid = f->res.classid;
					nhptr = (void*)(xprt + f->tunnelhdr - sizeof(*nhptr));
					goto restart;
				}
			}

			/* And wildcard bucket... */
			for (f = s->ht[16]; f; f = f->next) {
				*res = f->res;
				RSVP_APPLY_RESULT();
				goto matched;
			}
			return -1;
		}
	}
	return -1;
}

Project: linux-2.6

static int inet6_fill_ifaddr(struct sk_buff *skb, struct inet6_ifaddr *ifa,
			     u32 pid, u32 seq, int event, unsigned int flags)
{
	struct ifaddrmsg *ifm;
	struct nlmsghdr  *nlh;
	struct ifa_cacheinfo ci;
	unsigned char	 *b = skb->tail;

	nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*ifm), flags);
	ifm = NLMSG_DATA(nlh);
	ifm->ifa_family = AF_INET6;
	ifm->ifa_prefixlen = ifa->prefix_len;
	ifm->ifa_flags = ifa->flags;
	ifm->ifa_scope = RT_SCOPE_UNIVERSE;
	if (ifa->scope&IFA_HOST)
		ifm->ifa_scope = RT_SCOPE_HOST;
	else if (ifa->scope&IFA_LINK)
		ifm->ifa_scope = RT_SCOPE_LINK;
	else if (ifa->scope&IFA_SITE)
		ifm->ifa_scope = RT_SCOPE_SITE;
	ifm->ifa_index = ifa->idev->dev->ifindex;
	RTA_PUT(skb, IFA_ADDRESS, 16, &ifa->addr);
	if (!(ifa->flags&IFA_F_PERMANENT)) {
		ci.ifa_prefered = ifa->prefered_lft;
		ci.ifa_valid = ifa->valid_lft;
		if (ci.ifa_prefered != INFINITY_LIFE_TIME) {
			long tval = (jiffies - ifa->tstamp)/HZ;
			ci.ifa_prefered -= tval;
			if (ci.ifa_valid != INFINITY_LIFE_TIME)
				ci.ifa_valid -= tval;
		}
	} else {
		ci.ifa_prefered = INFINITY_LIFE_TIME;
		ci.ifa_valid = INFINITY_LIFE_TIME;
	}
	ci.cstamp = (__u32)(TIME_DELTA(ifa->cstamp, INITIAL_JIFFIES) / HZ * 100
		    + TIME_DELTA(ifa->cstamp, INITIAL_JIFFIES) % HZ * 100 / HZ);
	ci.tstamp = (__u32)(TIME_DELTA(ifa->tstamp, INITIAL_JIFFIES) / HZ * 100
		    + TIME_DELTA(ifa->tstamp, INITIAL_JIFFIES) % HZ * 100 / HZ);
	RTA_PUT(skb, IFA_CACHEINFO, sizeof(ci), &ci);
	nlh->nlmsg_len = skb->tail - b;
	return skb->len;

nlmsg_failure:
rtattr_failure:
	skb_trim(skb, b - skb->data);
	return -1;
}

Project: linux-2.6

static void cbq_rmprio(struct cbq_sched_data *q, struct cbq_class *cl)
{
	q->nclasses[cl->priority]--;
	q->quanta[cl->priority] -= cl->weight;
	cbq_normalize_quanta(q, cl->priority);
}

Project: linux-2.6

static int ipv6_create_tempaddr(struct inet6_ifaddr *ifp, struct inet6_ifaddr *ift)
{
	struct inet6_dev *idev = ifp->idev;
	struct in6_addr addr, *tmpaddr;
	unsigned long tmp_prefered_lft, tmp_valid_lft, tmp_cstamp, tmp_tstamp;
	int tmp_plen;
	int ret = 0;
	int max_addresses;

	write_lock(&idev->lock);
	if (ift) {
		spin_lock_bh(&ift->lock);
		memcpy(&addr.s6_addr[8], &ift->addr.s6_addr[8], 8);
		spin_unlock_bh(&ift->lock);
		tmpaddr = &addr;
	} else {
		tmpaddr = NULL;
	}
retry:
	in6_dev_hold(idev);
	if (idev->cnf.use_tempaddr <= 0) {
		write_unlock(&idev->lock);
		printk(KERN_INFO
			"ipv6_create_tempaddr(): use_tempaddr is disabled.\n");
		in6_dev_put(idev);
		ret = -1;
		goto out;
	}
	spin_lock_bh(&ifp->lock);
	if (ifp->regen_count++ >= idev->cnf.regen_max_retry) {
		idev->cnf.use_tempaddr = -1;	/*XXX*/
		spin_unlock_bh(&ifp->lock);
		write_unlock(&idev->lock);
		printk(KERN_WARNING
			"ipv6_create_tempaddr(): regeneration time exceeded. disabled temporary address support.\n");
		in6_dev_put(idev);
		ret = -1;
		goto out;
	}
	in6_ifa_hold(ifp);
	memcpy(addr.s6_addr, ifp->addr.s6_addr, 8);
	if (__ipv6_try_regen_rndid(idev, tmpaddr) < 0) {
		spin_unlock_bh(&ifp->lock);
		write_unlock(&idev->lock);
		printk(KERN_WARNING
			"ipv6_create_tempaddr(): regeneration of randomized interface id failed.\n");
		in6_ifa_put(ifp);
		in6_dev_put(idev);
		ret = -1;
		goto out;
	}
	memcpy(&addr.s6_addr[8], idev->rndid, 8);
	tmp_valid_lft = min_t(__u32,
			      ifp->valid_lft,
			      idev->cnf.temp_valid_lft);
	tmp_prefered_lft = min_t(__u32, 
				 ifp->prefered_lft, 
				 idev->cnf.temp_prefered_lft - desync_factor / HZ);
	tmp_plen = ifp->prefix_len;
	max_addresses = idev->cnf.max_addresses;
	tmp_cstamp = ifp->cstamp;
	tmp_tstamp = ifp->tstamp;
	spin_unlock_bh(&ifp->lock);

	write_unlock(&idev->lock);
	ift = !max_addresses ||
	      ipv6_count_addresses(idev) < max_addresses ? 
		ipv6_add_addr(idev, &addr, tmp_plen,
			      ipv6_addr_type(&addr)&IPV6_ADDR_SCOPE_MASK, IFA_F_TEMPORARY) : NULL;
	if (!ift || IS_ERR(ift)) {
		in6_ifa_put(ifp);
		in6_dev_put(idev);
		printk(KERN_INFO
			"ipv6_create_tempaddr(): retry temporary address regeneration.\n");
		tmpaddr = &addr;
		write_lock(&idev->lock);
		goto retry;
	}

	spin_lock_bh(&ift->lock);
	ift->ifpub = ifp;
	ift->valid_lft = tmp_valid_lft;
	ift->prefered_lft = tmp_prefered_lft;
	ift->cstamp = tmp_cstamp;
	ift->tstamp = tmp_tstamp;
	spin_unlock_bh(&ift->lock);

	addrconf_dad_start(ift, 0);
	in6_ifa_put(ift);
	in6_dev_put(idev);
out:
	return ret;
}

Project: linux-2.6

cbq_requeue(struct sk_buff *skb, struct Qdisc *sch)
{
	struct cbq_sched_data *q = qdisc_priv(sch);
	struct cbq_class *cl;
	int ret;

	if ((cl = q->tx_class) == NULL) {
		kfree_skb(skb);
		sch->qstats.drops++;
		return NET_XMIT_CN;
	}
	q->tx_class = NULL;

	cbq_mark_toplevel(q, cl);

#ifdef CONFIG_NET_CLS_POLICE
	q->rx_class = cl;
	cl->q->__parent = sch;
#endif
	if ((ret = cl->q->ops->requeue(skb, cl->q)) == 0) {
		sch->q.qlen++;
		sch->qstats.requeues++;
		if (!cl->next_alive)
			cbq_activate_class(cl);
		return 0;
	}
	sch->qstats.drops++;
	cl->qstats.drops++;
	return ret;
}

Project: linux-2.6

int unregister_inet6addr_notifier(struct notifier_block *nb)
{
        return notifier_chain_unregister(&inet6addr_chain,nb);
}

Project: linux-2.6

static unsigned long rsvp_get(struct tcf_proto *tp, u32 handle)
{
	struct rsvp_session **sht = ((struct rsvp_head*)tp->root)->ht;
	struct rsvp_session *s;
	struct rsvp_filter *f;
	unsigned h1 = handle&0xFF;
	unsigned h2 = (handle>>8)&0xFF;

	if (h2 > 16)
		return 0;

	for (s = sht[h1]; s; s = s->next) {
		for (f = s->ht[h2]; f; f = f->next) {
			if (f->handle == handle)
				return (unsigned long)f;
		}
	}
	return 0;
}

Project: linux-2.6

static int cbq_set_wrr(struct cbq_class *cl, struct tc_cbq_wrropt *wrr)
{
	struct cbq_sched_data *q = qdisc_priv(cl->qdisc);

	if (wrr->allot)
		cl->allot = wrr->allot;
	if (wrr->weight)
		cl->weight = wrr->weight;
	if (wrr->priority) {
		cl->priority = wrr->priority-1;
		cl->cpriority = cl->priority;
		if (cl->priority >= cl->priority2)
			cl->priority2 = TC_CBQ_MAXPRIO-1;
	}

	cbq_addprio(q, cl);
	return 0;
}

Project: linux-2.6

static int inet6_fill_ifmcaddr(struct sk_buff *skb, struct ifmcaddr6 *ifmca,
				u32 pid, u32 seq, int event, u16 flags)
{
	struct ifaddrmsg *ifm;
	struct nlmsghdr  *nlh;
	struct ifa_cacheinfo ci;
	unsigned char	 *b = skb->tail;

	nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*ifm), flags);
	ifm = NLMSG_DATA(nlh);
	ifm->ifa_family = AF_INET6;	
	ifm->ifa_prefixlen = 128;
	ifm->ifa_flags = IFA_F_PERMANENT;
	ifm->ifa_scope = RT_SCOPE_UNIVERSE;
	if (ipv6_addr_scope(&ifmca->mca_addr)&IFA_SITE)
		ifm->ifa_scope = RT_SCOPE_SITE;
	ifm->ifa_index = ifmca->idev->dev->ifindex;
	RTA_PUT(skb, IFA_MULTICAST, 16, &ifmca->mca_addr);
	ci.cstamp = (__u32)(TIME_DELTA(ifmca->mca_cstamp, INITIAL_JIFFIES) / HZ
		    * 100 + TIME_DELTA(ifmca->mca_cstamp, INITIAL_JIFFIES) % HZ
		    * 100 / HZ);
	ci.tstamp = (__u32)(TIME_DELTA(ifmca->mca_tstamp, INITIAL_JIFFIES) / HZ
		    * 100 + TIME_DELTA(ifmca->mca_tstamp, INITIAL_JIFFIES) % HZ
		    * 100 / HZ);
	ci.ifa_prefered = INFINITY_LIFE_TIME;
	ci.ifa_valid = INFINITY_LIFE_TIME;
	RTA_PUT(skb, IFA_CACHEINFO, sizeof(ci), &ci);
	nlh->nlmsg_len = skb->tail - b;
	return skb->len;

nlmsg_failure:
rtattr_failure:
	skb_trim(skb, b - skb->data);
	return -1;
}

Project: linux-2.6

static __inline__ int cbq_dump_fopt(struct sk_buff *skb, struct cbq_class *cl)
{
	unsigned char	 *b = skb->tail;
	struct tc_cbq_fopt opt;

	if (cl->split || cl->defmap) {
		opt.split = cl->split ? cl->split->classid : 0;
		opt.defmap = cl->defmap;
		opt.defchange = ~0;
		RTA_PUT(skb, TCA_CBQ_FOPT, sizeof(opt), &opt);
	}
	return skb->len;

rtattr_failure:
	skb_trim(skb, b - skb->data);
	return -1;
}

Project: linux-2.6

static int __ipv6_try_regen_rndid(struct inet6_dev *idev, struct in6_addr *tmpaddr) {
	int ret = 0;

	if (tmpaddr && memcmp(idev->rndid, &tmpaddr->s6_addr[8], 8) == 0)
		ret = __ipv6_regen_rndid(idev);
	return ret;
}

Project: linux-2.6

void if6_proc_exit(void)
{
	proc_net_remove("if_inet6");
}

Project: linux-2.6

static void inet6_ifa_notify(int event, struct inet6_ifaddr *ifa)
{
	struct sk_buff *skb;
	int size = NLMSG_SPACE(sizeof(struct ifaddrmsg)+128);

	skb = alloc_skb(size, GFP_ATOMIC);
	if (!skb) {
		netlink_set_err(rtnl, 0, RTMGRP_IPV6_IFADDR, ENOBUFS);
		return;
	}
	if (inet6_fill_ifaddr(skb, ifa, current->pid, 0, event, 0) < 0) {
		kfree_skb(skb);
		netlink_set_err(rtnl, 0, RTMGRP_IPV6_IFADDR, EINVAL);
		return;
	}
	NETLINK_CB(skb).dst_groups = RTMGRP_IPV6_IFADDR;
	netlink_broadcast(rtnl, skb, 0, RTMGRP_IPV6_IFADDR, GFP_ATOMIC);
}

Project: linux-2.6

static __inline__ unsigned hash_dst(u32 *dst, u8 protocol, u8 tunnelid)
{
	unsigned h = dst[RSVP_DST_LEN-1];
	h ^= h>>16;
	h ^= h>>8;
	return (h ^ protocol ^ tunnelid) & 0xFF;
}

Project: linux-2.6

static __inline__ int cbq_dump_lss(struct sk_buff *skb, struct cbq_class *cl)
{
	unsigned char	 *b = skb->tail;
	struct tc_cbq_lssopt opt;

	opt.flags = 0;
	if (cl->borrow == NULL)
		opt.flags |= TCF_CBQ_LSS_BOUNDED;
	if (cl->share == NULL)
		opt.flags |= TCF_CBQ_LSS_ISOLATED;
	opt.ewma_log = cl->ewma_log;
	opt.level = cl->level;
	opt.avpkt = cl->avpkt;
	opt.maxidle = cl->maxidle;
	opt.minidle = (u32)(-cl->minidle);
	opt.offtime = cl->offtime;
	opt.change = ~0;
	RTA_PUT(skb, TCA_CBQ_LSSOPT, sizeof(opt), &opt);
	return skb->len;

rtattr_failure:
	skb_trim(skb, b - skb->data);
	return -1;
}

Project: linux-2.6

static void __exit cbq_module_exit(void) 
{
	unregister_qdisc(&cbq_qdisc_ops);
}

Project: linux-2.6

cbq_change_class(struct Qdisc *sch, u32 classid, u32 parentid, struct rtattr **tca,
		 unsigned long *arg)
{
	int err;
	struct cbq_sched_data *q = qdisc_priv(sch);
	struct cbq_class *cl = (struct cbq_class*)*arg;
	struct rtattr *opt = tca[TCA_OPTIONS-1];
	struct rtattr *tb[TCA_CBQ_MAX];
	struct cbq_class *parent;
	struct qdisc_rate_table *rtab = NULL;

	if (opt==NULL || rtattr_parse_nested(tb, TCA_CBQ_MAX, opt))
		return -EINVAL;

	if (tb[TCA_CBQ_OVL_STRATEGY-1] &&
	    RTA_PAYLOAD(tb[TCA_CBQ_OVL_STRATEGY-1]) < sizeof(struct tc_cbq_ovl))
		return -EINVAL;

	if (tb[TCA_CBQ_FOPT-1] &&
	    RTA_PAYLOAD(tb[TCA_CBQ_FOPT-1]) < sizeof(struct tc_cbq_fopt))
		return -EINVAL;

	if (tb[TCA_CBQ_RATE-1] &&
	    RTA_PAYLOAD(tb[TCA_CBQ_RATE-1]) < sizeof(struct tc_ratespec))
			return -EINVAL;

	if (tb[TCA_CBQ_LSSOPT-1] &&
	    RTA_PAYLOAD(tb[TCA_CBQ_LSSOPT-1]) < sizeof(struct tc_cbq_lssopt))
			return -EINVAL;

	if (tb[TCA_CBQ_WRROPT-1] &&
	    RTA_PAYLOAD(tb[TCA_CBQ_WRROPT-1]) < sizeof(struct tc_cbq_wrropt))
			return -EINVAL;

#ifdef CONFIG_NET_CLS_POLICE
	if (tb[TCA_CBQ_POLICE-1] &&
	    RTA_PAYLOAD(tb[TCA_CBQ_POLICE-1]) < sizeof(struct tc_cbq_police))
			return -EINVAL;
#endif

	if (cl) {
		/* Check parent */
		if (parentid) {
			if (cl->tparent && cl->tparent->classid != parentid)
				return -EINVAL;
			if (!cl->tparent && parentid != TC_H_ROOT)
				return -EINVAL;
		}

		if (tb[TCA_CBQ_RATE-1]) {
			rtab = qdisc_get_rtab(RTA_DATA(tb[TCA_CBQ_RATE-1]), tb[TCA_CBQ_RTAB-1]);
			if (rtab == NULL)
				return -EINVAL;
		}

		/* Change class parameters */
		sch_tree_lock(sch);

		if (cl->next_alive != NULL)
			cbq_deactivate_class(cl);

		if (rtab) {
			rtab = xchg(&cl->R_tab, rtab);
			qdisc_put_rtab(rtab);
		}

		if (tb[TCA_CBQ_LSSOPT-1])
			cbq_set_lss(cl, RTA_DATA(tb[TCA_CBQ_LSSOPT-1]));

		if (tb[TCA_CBQ_WRROPT-1]) {
			cbq_rmprio(q, cl);
			cbq_set_wrr(cl, RTA_DATA(tb[TCA_CBQ_WRROPT-1]));
		}

		if (tb[TCA_CBQ_OVL_STRATEGY-1])
			cbq_set_overlimit(cl, RTA_DATA(tb[TCA_CBQ_OVL_STRATEGY-1]));

#ifdef CONFIG_NET_CLS_POLICE
		if (tb[TCA_CBQ_POLICE-1])
			cbq_set_police(cl, RTA_DATA(tb[TCA_CBQ_POLICE-1]));
#endif

		if (tb[TCA_CBQ_FOPT-1])
			cbq_set_fopt(cl, RTA_DATA(tb[TCA_CBQ_FOPT-1]));

		if (cl->q->q.qlen)
			cbq_activate_class(cl);

		sch_tree_unlock(sch);

#ifdef CONFIG_NET_ESTIMATOR
		if (tca[TCA_RATE-1])
			gen_replace_estimator(&cl->bstats, &cl->rate_est,
				cl->stats_lock, tca[TCA_RATE-1]);
#endif
		return 0;
	}

	if (parentid == TC_H_ROOT)
		return -EINVAL;

	if (tb[TCA_CBQ_WRROPT-1] == NULL || tb[TCA_CBQ_RATE-1] == NULL ||
	    tb[TCA_CBQ_LSSOPT-1] == NULL)
		return -EINVAL;

	rtab = qdisc_get_rtab(RTA_DATA(tb[TCA_CBQ_RATE-1]), tb[TCA_CBQ_RTAB-1]);
	if (rtab == NULL)
		return -EINVAL;

	if (classid) {
		err = -EINVAL;
		if (TC_H_MAJ(classid^sch->handle) || cbq_class_lookup(q, classid))
			goto failure;
	} else {
		int i;
		classid = TC_H_MAKE(sch->handle,0x8000);

		for (i=0; i<0x8000; i++) {
			if (++q->hgenerator >= 0x8000)
				q->hgenerator = 1;
			if (cbq_class_lookup(q, classid|q->hgenerator) == NULL)
				break;
		}
		err = -ENOSR;
		if (i >= 0x8000)
			goto failure;
		classid = classid|q->hgenerator;
	}

	parent = &q->link;
	if (parentid) {
		parent = cbq_class_lookup(q, parentid);
		err = -EINVAL;
		if (parent == NULL)
			goto failure;
	}

	err = -ENOBUFS;
	cl = kmalloc(sizeof(*cl), GFP_KERNEL);
	if (cl == NULL)
		goto failure;
	memset(cl, 0, sizeof(*cl));
	cl->R_tab = rtab;
	rtab = NULL;
	cl->refcnt = 1;
	if (!(cl->q = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops)))
		cl->q = &noop_qdisc;
	cl->classid = classid;
	cl->tparent = parent;
	cl->qdisc = sch;
	cl->allot = parent->allot;
	cl->quantum = cl->allot;
	cl->weight = cl->R_tab->rate.rate;
	cl->stats_lock = &sch->dev->queue_lock;

	sch_tree_lock(sch);
	cbq_link_class(cl);
	cl->borrow = cl->tparent;
	if (cl->tparent != &q->link)
		cl->share = cl->tparent;
	cbq_adjust_levels(parent);
	cl->minidle = -0x7FFFFFFF;
	cbq_set_lss(cl, RTA_DATA(tb[TCA_CBQ_LSSOPT-1]));
	cbq_set_wrr(cl, RTA_DATA(tb[TCA_CBQ_WRROPT-1]));
	if (cl->ewma_log==0)
		cl->ewma_log = q->link.ewma_log;
	if (cl->maxidle==0)
		cl->maxidle = q->link.maxidle;
	if (cl->avpkt==0)
		cl->avpkt = q->link.avpkt;
	cl->overlimit = cbq_ovl_classic;
	if (tb[TCA_CBQ_OVL_STRATEGY-1])
		cbq_set_overlimit(cl, RTA_DATA(tb[TCA_CBQ_OVL_STRATEGY-1]));
#ifdef CONFIG_NET_CLS_POLICE
	if (tb[TCA_CBQ_POLICE-1])
		cbq_set_police(cl, RTA_DATA(tb[TCA_CBQ_POLICE-1]));
#endif
	if (tb[TCA_CBQ_FOPT-1])
		cbq_set_fopt(cl, RTA_DATA(tb[TCA_CBQ_FOPT-1]));
	sch_tree_unlock(sch);

#ifdef CONFIG_NET_ESTIMATOR
	if (tca[TCA_RATE-1])
		gen_new_estimator(&cl->bstats, &cl->rate_est,
			cl->stats_lock, tca[TCA_RATE-1]);
#endif

	*arg = (unsigned long)cl;
	return 0;

failure:
	qdisc_put_rtab(rtab);
	return err;
}

Project: linux-2.6

static int cbq_set_overlimit(struct cbq_class *cl, struct tc_cbq_ovl *ovl)
{
	switch (ovl->strategy) {
	case TC_CBQ_OVL_CLASSIC:
		cl->overlimit = cbq_ovl_classic;
		break;
	case TC_CBQ_OVL_DELAY:
		cl->overlimit = cbq_ovl_delay;
		break;
	case TC_CBQ_OVL_LOWPRIO:
		if (ovl->priority2-1 >= TC_CBQ_MAXPRIO ||
		    ovl->priority2-1 <= cl->priority)
			return -EINVAL;
		cl->priority2 = ovl->priority2-1;
		cl->overlimit = cbq_ovl_lowprio;
		break;
	case TC_CBQ_OVL_DROP:
		cl->overlimit = cbq_ovl_drop;
		break;
	case TC_CBQ_OVL_RCLASSIC:
		cl->overlimit = cbq_ovl_rclassic;
		break;
	default:
		return -EINVAL;
	}
	cl->penalty = (ovl->penalty*HZ)/1000;
	return 0;
}

Project: linux-2.6

cbq_dump_class_stats(struct Qdisc *sch, unsigned long arg,
	struct gnet_dump *d)
{
	struct cbq_sched_data *q = qdisc_priv(sch);
	struct cbq_class *cl = (struct cbq_class*)arg;

	cl->qstats.qlen = cl->q->q.qlen;
	cl->xstats.avgidle = cl->avgidle;
	cl->xstats.undertime = 0;

	if (!PSCHED_IS_PASTPERFECT(cl->undertime))
		cl->xstats.undertime = PSCHED_TDIFF(cl->undertime, q->now);

	if (gnet_stats_copy_basic(d, &cl->bstats) < 0 ||
#ifdef CONFIG_NET_ESTIMATOR
	    gnet_stats_copy_rate_est(d, &cl->rate_est) < 0 ||
#endif
	    gnet_stats_copy_queue(d, &cl->qstats) < 0)
		return -1;

	return gnet_stats_copy_app(d, &cl->xstats, sizeof(cl->xstats));
}

Project: linux-2.6

static int inet6_fill_prefix(struct sk_buff *skb, struct inet6_dev *idev,
			struct prefix_info *pinfo, u32 pid, u32 seq, 
			int event, unsigned int flags)
{
	struct prefixmsg	*pmsg;
	struct nlmsghdr 	*nlh;
	unsigned char		*b = skb->tail;
	struct prefix_cacheinfo	ci;

	nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*pmsg), flags);
	pmsg = NLMSG_DATA(nlh);
	pmsg->prefix_family = AF_INET6;
	pmsg->prefix_pad1 = 0;
	pmsg->prefix_pad2 = 0;
	pmsg->prefix_ifindex = idev->dev->ifindex;
	pmsg->prefix_len = pinfo->prefix_len;
	pmsg->prefix_type = pinfo->type;
	pmsg->prefix_pad3 = 0;
	
	pmsg->prefix_flags = 0;
	if (pinfo->onlink)
		pmsg->prefix_flags |= IF_PREFIX_ONLINK;
	if (pinfo->autoconf)
		pmsg->prefix_flags |= IF_PREFIX_AUTOCONF;

	RTA_PUT(skb, PREFIX_ADDRESS, sizeof(pinfo->prefix), &pinfo->prefix);

	ci.preferred_time = ntohl(pinfo->prefered);
	ci.valid_time = ntohl(pinfo->valid);
	RTA_PUT(skb, PREFIX_CACHEINFO, sizeof(ci), &ci);

	nlh->nlmsg_len = skb->tail - b;
	return skb->len;

nlmsg_failure:
rtattr_failure:
	skb_trim(skb, b - skb->data);
	return -1;
}

Project: linux-2.6

static void cbq_change_defmap(struct cbq_class *cl, u32 splitid, u32 def, u32 mask)
{
	struct cbq_class *split = NULL;

	if (splitid == 0) {
		if ((split = cl->split) == NULL)
			return;
		splitid = split->classid;
	}

	if (split == NULL || split->classid != splitid) {
		for (split = cl->tparent; split; split = split->tparent)
			if (split->classid == splitid)
				break;
	}

	if (split == NULL)
		return;

	if (cl->split != split) {
		cl->defmap = 0;
		cbq_sync_defmap(cl);
		cl->split = split;
		cl->defmap = def&mask;
	} else
		cl->defmap = (cl->defmap&~mask)|(def&mask);

	cbq_sync_defmap(cl);
}

Project: linux-2.6

int ipv6_get_saddr(struct dst_entry *dst,
		   struct in6_addr *daddr, struct in6_addr *saddr)
{
	return ipv6_dev_get_saddr(dst ? ((struct rt6_info *)dst)->rt6i_idev->dev : NULL, daddr, saddr);
}

Project: linux-2.6

static unsigned long cbq_get(struct Qdisc *sch, u32 classid)
{
	struct cbq_sched_data *q = qdisc_priv(sch);
	struct cbq_class *cl = cbq_class_lookup(q, classid);

	if (cl) {
		cl->refcnt++;
		return (unsigned long)cl;
	}
	return 0;
}

Project: linux-2.6

void __exit addrconf_cleanup(void)
{
 	struct net_device *dev;
 	struct inet6_dev *idev;
 	struct inet6_ifaddr *ifa;
	int i;

	unregister_netdevice_notifier(&ipv6_dev_notf);

	rtnetlink_links[PF_INET6] = NULL;
#ifdef CONFIG_SYSCTL
	addrconf_sysctl_unregister(&ipv6_devconf_dflt);
	addrconf_sysctl_unregister(&ipv6_devconf);
#endif

	rtnl_lock();

	/*
	 *	clean dev list.
	 */

	for (dev=dev_base; dev; dev=dev->next) {
		if ((idev = __in6_dev_get(dev)) == NULL)
			continue;
		addrconf_ifdown(dev, 1);
	}
	addrconf_ifdown(&loopback_dev, 2);

	/*
	 *	Check hash table.
	 */

	write_lock_bh(&addrconf_hash_lock);
	for (i=0; i < IN6_ADDR_HSIZE; i++) {
		for (ifa=inet6_addr_lst[i]; ifa; ) {
			struct inet6_ifaddr *bifa;

			bifa = ifa;
			ifa = ifa->lst_next;
			printk(KERN_DEBUG "bug: IPv6 address leakage detected: ifa=%p\n", bifa);
			/* Do not free it; something is wrong.
			   Now we can investigate it with debugger.
			 */
		}
	}
	write_unlock_bh(&addrconf_hash_lock);

	del_timer(&addr_chk_timer);

	rtnl_unlock();

#ifdef CONFIG_IPV6_PRIVACY
	if (likely(md5_tfm != NULL)) {
		crypto_free_tfm(md5_tfm);
		md5_tfm = NULL;
	}
#endif

#ifdef CONFIG_PROC_FS
	proc_net_remove("if_inet6");
#endif
}

Project: linux-2.6

static int __ipv6_regen_rndid(struct inet6_dev *idev)
{
	struct net_device *dev;
	struct scatterlist sg[2];

	sg[0].page = virt_to_page(idev->entropy);
	sg[0].offset = offset_in_page(idev->entropy);
	sg[0].length = 8;
	sg[1].page = virt_to_page(idev->work_eui64);
	sg[1].offset = offset_in_page(idev->work_eui64);
	sg[1].length = 8;

	dev = idev->dev;

	if (ipv6_generate_eui64(idev->work_eui64, dev)) {
		printk(KERN_INFO
			"__ipv6_regen_rndid(idev=%p): cannot get EUI64 identifier; use random bytes.\n",
			idev);
		get_random_bytes(idev->work_eui64, sizeof(idev->work_eui64));
	}
regen:
	spin_lock(&md5_tfm_lock);
	if (unlikely(md5_tfm == NULL)) {
		spin_unlock(&md5_tfm_lock);
		return -1;
	}
	crypto_digest_init(md5_tfm);
	crypto_digest_update(md5_tfm, sg, 2);
	crypto_digest_final(md5_tfm, idev->work_digest);
	spin_unlock(&md5_tfm_lock);

	memcpy(idev->rndid, &idev->work_digest[0], 8);
	idev->rndid[0] &= ~0x02;
	memcpy(idev->entropy, &idev->work_digest[8], 8);

	/*
	 * <draft-ietf-ipngwg-temp-addresses-v2-00.txt>:
	 * check if generated address is not inappropriate
	 *
	 *  - Reserved subnet anycast (RFC 2526)
	 *	11111101 11....11 1xxxxxxx
	 *  - ISATAP (draft-ietf-ngtrans-isatap-13.txt) 5.1
	 *	00-00-5E-FE-xx-xx-xx-xx
	 *  - value 0
	 *  - XXX: already assigned to an address on the device
	 */
	if (idev->rndid[0] == 0xfd && 
	    (idev->rndid[1]&idev->rndid[2]&idev->rndid[3]&idev->rndid[4]&idev->rndid[5]&idev->rndid[6]) == 0xff &&
	    (idev->rndid[7]&0x80))
		goto regen;
	if ((idev->rndid[0]|idev->rndid[1]) == 0) {
		if (idev->rndid[2] == 0x5e && idev->rndid[3] == 0xfe)
			goto regen;
		if ((idev->rndid[2]|idev->rndid[3]|idev->rndid[4]|idev->rndid[5]|idev->rndid[6]|idev->rndid[7]) == 0x00)
			goto regen;
	}

	return 0;
}

Project: linux-2.6

static __inline__ unsigned cbq_hash(u32 h)
{
	h ^= h>>8;
	h ^= h>>4;
	return h&0xF;
}

Project: linux-2.6

static void cbq_ovl_rclassic(struct cbq_class *cl)
{
	struct cbq_sched_data *q = qdisc_priv(cl->qdisc);
	struct cbq_class *this = cl;

	do {
		if (cl->level > q->toplevel) {
			cl = NULL;
			break;
		}
	} while ((cl = cl->borrow) != NULL);

	if (cl == NULL)
		cl = this;
	cbq_ovl_classic(cl);
}

Project: linux-2.6

static void cbq_adjust_levels(struct cbq_class *this)
{
	if (this == NULL)
		return;

	do {
		int level = 0;
		struct cbq_class *cl;

		if ((cl = this->children) != NULL) {
			do {
				if (cl->level > level)
					level = cl->level;
			} while ((cl = cl->sibling) != this->children);
		}
		this->level = level+1;
	} while ((this = this->tparent) != NULL);
}

Project: linux-2.6

static struct inet6_dev * ipv6_find_idev(struct net_device *dev)
{
	struct inet6_dev *idev;

	ASSERT_RTNL();

	if ((idev = __in6_dev_get(dev)) == NULL) {
		if ((idev = ipv6_add_dev(dev)) == NULL)
			return NULL;
	}
	if (dev->flags&IFF_UP)
		ipv6_mc_up(idev);
	return idev;
}

Project: linux-2.6

void addrconf_join_solict(struct net_device *dev, struct in6_addr *addr)
{
	struct in6_addr maddr;

	if (dev->flags&(IFF_LOOPBACK|IFF_NOARP))
		return;

	addrconf_addr_solict_mult(addr, &maddr);
	ipv6_dev_mc_inc(dev, &maddr);
}

Project: linux-2.6

static void addrconf_del_timer(struct inet6_ifaddr *ifp)
{
	if (del_timer(&ifp->timer))
		__in6_ifa_put(ifp);
}

Project: linux-2.6

static void cbq_sync_defmap(struct cbq_class *cl)
{
	struct cbq_sched_data *q = qdisc_priv(cl->qdisc);
	struct cbq_class *split = cl->split;
	unsigned h;
	int i;

	if (split == NULL)
		return;

	for (i=0; i<=TC_PRIO_MAX; i++) {
		if (split->defaults[i] == cl && !(cl->defmap&(1<<i)))
			split->defaults[i] = NULL;
	}

	for (i=0; i<=TC_PRIO_MAX; i++) {
		int level = split->level;

		if (split->defaults[i])
			continue;

		for (h=0; h<16; h++) {
			struct cbq_class *c;

			for (c = q->classes[h]; c; c = c->next) {
				if (c->split == split && c->level < level &&
				    c->defmap&(1<<i)) {
					split->defaults[i] = c;
					level = c->level;
				}
			}
		}
	}
}

Project: linux-2.6

int ipv6_dev_get_saddr(struct net_device *dev,
		       struct in6_addr *daddr, struct in6_addr *saddr)
{
	struct inet6_ifaddr *ifp = NULL;
	struct inet6_ifaddr *match = NULL;
	struct inet6_dev *idev;
	int scope;
	int err;
	int hiscore = -1, score;

	scope = ipv6_addr_scope(daddr);

	/*
	 *	known dev
	 *	search dev and walk through dev addresses
	 */

	if (dev) {
		if (dev->flags & IFF_LOOPBACK)
			scope = IFA_HOST;

		read_lock(&addrconf_lock);
		idev = __in6_dev_get(dev);
		if (idev) {
			read_lock_bh(&idev->lock);
			for (ifp=idev->addr_list; ifp; ifp=ifp->if_next) {
				if (ifp->scope == scope) {
					if (ifp->flags&IFA_F_TENTATIVE)
						continue;
#ifdef CONFIG_IPV6_PRIVACY
					score = ipv6_saddr_pref(ifp, idev->cnf.use_tempaddr > 1 ? IFA_F_TEMPORARY : 0);
#else
					score = ipv6_saddr_pref(ifp, 0);
#endif
					if (score <= hiscore)
						continue;

					if (match)
						in6_ifa_put(match);
					match = ifp;
					hiscore = score;
					in6_ifa_hold(ifp);

					if (IPV6_GET_SADDR_MAXSCORE(score)) {
						read_unlock_bh(&idev->lock);
						read_unlock(&addrconf_lock);
						goto out;
					}
				}
			}
			read_unlock_bh(&idev->lock);
		}
		read_unlock(&addrconf_lock);
	}

	if (scope == IFA_LINK)
		goto out;

	/*
	 *	dev == NULL or search failed for specified dev
	 */

	read_lock(&dev_base_lock);
	read_lock(&addrconf_lock);
	for (dev = dev_base; dev; dev=dev->next) {
		idev = __in6_dev_get(dev);
		if (idev) {
			read_lock_bh(&idev->lock);
			for (ifp=idev->addr_list; ifp; ifp=ifp->if_next) {
				if (ifp->scope == scope) {
					if (ifp->flags&IFA_F_TENTATIVE)
						continue;
#ifdef CONFIG_IPV6_PRIVACY
					score = ipv6_saddr_pref(ifp, idev->cnf.use_tempaddr > 1 ? IFA_F_TEMPORARY : 0);
#else
					score = ipv6_saddr_pref(ifp, 0);
#endif
					if (score <= hiscore)
						continue;

					if (match)
						in6_ifa_put(match);
					match = ifp;
					hiscore = score;
					in6_ifa_hold(ifp);

					if (IPV6_GET_SADDR_MAXSCORE(score)) {
						read_unlock_bh(&idev->lock);
						goto out_unlock_base;
					}
				}
			}
			read_unlock_bh(&idev->lock);
		}
	}

out_unlock_base:
	read_unlock(&addrconf_lock);
	read_unlock(&dev_base_lock);

out:
	err = -EADDRNOTAVAIL;
	if (match) {
		ipv6_addr_copy(saddr, &match->addr);
		err = 0;
		in6_ifa_put(match);
	}

	return err;
}

Project: linux-2.6

static int cbq_set_police(struct cbq_class *cl, struct tc_cbq_police *p)
{
	cl->police = p->police;

	if (cl->q->handle) {
		if (p->police == TC_POLICE_RECLASSIFY)
			cl->q->reshape_fail = cbq_reshape_fail;
		else
			cl->q->reshape_fail = NULL;
	}
	return 0;
}

Project: linux-2.6

static void __exit exit_rsvp(void) 
{
	unregister_tcf_proto_ops(&RSVP_OPS);
}

Project: linux-2.6

static int addrconf_sysctl_forward_strategy(ctl_table *table, 
					    int __user *name, int nlen,
					    void __user *oldval,
					    size_t __user *oldlenp,
					    void __user *newval, size_t newlen,
					    void **context)
{
	int *valp = table->data;
	int new;

	if (!newval || !newlen)
		return 0;
	if (newlen != sizeof(int))
		return -EINVAL;
	if (get_user(new, (int __user *)newval))
		return -EFAULT;
	if (new == *valp)
		return 0;
	if (oldval && oldlenp) {
		size_t len;
		if (get_user(len, oldlenp))
			return -EFAULT;
		if (len) {
			if (len > table->maxlen)
				len = table->maxlen;
			if (copy_to_user(oldval, valp, len))
				return -EFAULT;
			if (put_user(len, oldlenp))
				return -EFAULT;
		}
	}

	if (valp != &ipv6_devconf_dflt.forwarding) {
		if (valp != &ipv6_devconf.forwarding) {
			struct inet6_dev *idev = (struct inet6_dev *)table->extra1;
			int changed;
			if (unlikely(idev == NULL))
				return -ENODEV;
			changed = (!*valp) ^ (!new);
			*valp = new;
			if (changed)
				dev_forward_change(idev);
		} else {
			*valp = new;
			addrconf_forward_change();
		}

		if (*valp)
			rt6_purge_dflt_routers();
	} else
		*valp = new;

	return 1;
}

Project: linux-2.6

static __inline__ int cbq_dump_wrr(struct sk_buff *skb, struct cbq_class *cl)
{
	unsigned char	 *b = skb->tail;
	struct tc_cbq_wrropt opt;

	opt.flags = 0;
	opt.allot = cl->allot;
	opt.priority = cl->priority+1;
	opt.cpriority = cl->cpriority+1;
	opt.weight = cl->weight;
	RTA_PUT(skb, TCA_CBQ_WRROPT, sizeof(opt), &opt);
	return skb->len;

rtattr_failure:
	skb_trim(skb, b - skb->data);
	return -1;
}

Project: linux-2.6

static int inline ipv6_saddr_pref(const struct inet6_ifaddr *ifp, u8 invpref)
{
	int pref;
	pref = ifp->flags&IFA_F_DEPRECATED ? 0 : 2;
#ifdef CONFIG_IPV6_PRIVACY
	pref |= (ifp->flags^invpref)&IFA_F_TEMPORARY ? 0 : 1;
#endif
	return pref;
}

Project: linux-2.6

static void addrconf_dev_config(struct net_device *dev)
{
	struct in6_addr addr;
	struct inet6_dev    * idev;

	ASSERT_RTNL();

	if ((dev->type != ARPHRD_ETHER) && 
	    (dev->type != ARPHRD_FDDI) &&
	    (dev->type != ARPHRD_IEEE802_TR) &&
	    (dev->type != ARPHRD_ARCNET) &&
	    (dev->type != ARPHRD_INFINIBAND)) {
		/* Alas, we support only Ethernet autoconfiguration. */
		return;
	}

	idev = addrconf_add_dev(dev);
	if (idev == NULL)
		return;

	memset(&addr, 0, sizeof(struct in6_addr));
	addr.s6_addr32[0] = htonl(0xFE800000);

	if (ipv6_generate_eui64(addr.s6_addr + 8, dev) == 0)
		addrconf_add_linklocal(idev, &addr);
}

Project: linux-2.6

static unsigned gen_handle(struct tcf_proto *tp, unsigned salt)
{
	struct rsvp_head *data = tp->root;
	int i = 0xFFFF;

	while (i-- > 0) {
		u32 h;
		if ((data->hgenerator += 0x10000) == 0)
			data->hgenerator = 0x10000;
		h = data->hgenerator|salt;
		if (rsvp_get(tp, h) == 0)
			return h;
	}
	return 0;
}

Project: linux-2.6

static __inline__ int cbq_dump_rate(struct sk_buff *skb, struct cbq_class *cl)
{
	unsigned char	 *b = skb->tail;

	RTA_PUT(skb, TCA_CBQ_RATE, sizeof(cl->R_tab->rate), &cl->R_tab->rate);
	return skb->len;

rtattr_failure:
	skb_trim(skb, b - skb->data);
	return -1;
}

Project: linux-2.6

static void cbq_link_class(struct cbq_class *this)
{
	struct cbq_sched_data *q = qdisc_priv(this->qdisc);
	unsigned h = cbq_hash(this->classid);
	struct cbq_class *parent = this->tparent;

	this->sibling = this;
	this->next = q->classes[h];
	q->classes[h] = this;

	if (parent == NULL)
		return;

	if (parent->children == NULL) {
		parent->children = this;
	} else {
		this->sibling = parent->children->sibling;
		parent->children->sibling = this;
	}
}

Project: linux-2.6

static void addrconf_forward_change(void)
{
	struct net_device *dev;
	struct inet6_dev *idev;

	read_lock(&dev_base_lock);
	for (dev=dev_base; dev; dev=dev->next) {
		read_lock(&addrconf_lock);
		idev = __in6_dev_get(dev);
		if (idev) {
			int changed = (!idev->cnf.forwarding) ^ (!ipv6_devconf.forwarding);
			idev->cnf.forwarding = ipv6_devconf.forwarding;
			if (changed)
				dev_forward_change(idev);
		}
		read_unlock(&addrconf_lock);
	}
	read_unlock(&dev_base_lock);
}

Project: linux-2.6

static void addrconf_add_mroute(struct net_device *dev)
{
	struct in6_rtmsg rtmsg;

	memset(&rtmsg, 0, sizeof(rtmsg));
	ipv6_addr_set(&rtmsg.rtmsg_dst,
		      htonl(0xFF000000), 0, 0, 0);
	rtmsg.rtmsg_dst_len = 8;
	rtmsg.rtmsg_metric = IP6_RT_PRIO_ADDRCONF;
	rtmsg.rtmsg_ifindex = dev->ifindex;
	rtmsg.rtmsg_flags = RTF_UP;
	rtmsg.rtmsg_type = RTMSG_NEWROUTE;
	ip6_route_add(&rtmsg, NULL, NULL, NULL);
}

Project: linux-2.6

static void cbq_addprio(struct cbq_sched_data *q, struct cbq_class *cl)
{
	q->nclasses[cl->priority]++;
	q->quanta[cl->priority] += cl->weight;
	cbq_normalize_quanta(q, cl->priority);
}

Project: linux-2.6

static __inline__ int cbq_dump_ovl(struct sk_buff *skb, struct cbq_class *cl)
{
	unsigned char	 *b = skb->tail;
	struct tc_cbq_ovl opt;

	opt.strategy = cl->ovl_strategy;
	opt.priority2 = cl->priority2+1;
	opt.pad = 0;
	opt.penalty = (cl->penalty*1000)/HZ;
	RTA_PUT(skb, TCA_CBQ_OVL_STRATEGY, sizeof(opt), &opt);
	return skb->len;

rtattr_failure:
	skb_trim(skb, b - skb->data);
	return -1;
}

Project: linux-2.6

void addrconf_leave_anycast(struct inet6_ifaddr *ifp)
{
	struct in6_addr addr;
	ipv6_addr_prefix(&addr, &ifp->addr, ifp->prefix_len);
	if (ipv6_addr_any(&addr))
		return;
	__ipv6_dev_ac_dec(ifp->idev, &addr);
}

Project: linux-2.6

static void cbq_deactivate_class(struct cbq_class *this)
{
	struct cbq_sched_data *q = qdisc_priv(this->qdisc);
	int prio = this->cpriority;
	struct cbq_class *cl;
	struct cbq_class *cl_prev = q->active[prio];

	do {
		cl = cl_prev->next_alive;
		if (cl == this) {
			cl_prev->next_alive = cl->next_alive;
			cl->next_alive = NULL;

			if (cl == q->active[prio]) {
				q->active[prio] = cl_prev;
				if (cl == q->active[prio]) {
					q->active[prio] = NULL;
					q->activemask &= ~(1<<prio);
					return;
				}
			}

			cl = cl_prev->next_alive;
			return;
		}
	} while ((cl_prev = cl) != q->active[prio]);
}

Project: linux-2.6

static void addrconf_rs_timer(unsigned long data)
{
	struct inet6_ifaddr *ifp = (struct inet6_ifaddr *) data;

	if (ifp->idev->cnf.forwarding)
		goto out;

	if (ifp->idev->if_flags & IF_RA_RCVD) {
		/*
		 *	Announcement received after solicitation
		 *	was sent
		 */
		goto out;
	}

	spin_lock(&ifp->lock);
	if (ifp->probes++ < ifp->idev->cnf.rtr_solicits) {
		struct in6_addr all_routers;

		/* The wait after the last probe can be shorter */
		addrconf_mod_timer(ifp, AC_RS,
				   (ifp->probes == ifp->idev->cnf.rtr_solicits) ?
				   ifp->idev->cnf.rtr_solicit_delay :
				   ifp->idev->cnf.rtr_solicit_interval);
		spin_unlock(&ifp->lock);

		ipv6_addr_all_routers(&all_routers);

		ndisc_send_rs(ifp->idev->dev, &ifp->addr, &all_routers);
	} else {
		spin_unlock(&ifp->lock);
		/*
		 * Note: we do not support deprecated "all on-link"
		 * assumption any longer.
		 */
		printk(KERN_DEBUG "%s: no IPv6 routers present\n",
		       ifp->idev->dev->name);
	}

out:
	in6_ifa_put(ifp);
}

Project: linux-2.6

static int ipv6_inherit_eui64(u8 *eui, struct inet6_dev *idev)
{
	int err = -1;
	struct inet6_ifaddr *ifp;

	read_lock_bh(&idev->lock);
	for (ifp=idev->addr_list; ifp; ifp=ifp->if_next) {
		if (ifp->scope == IFA_LINK && !(ifp->flags&IFA_F_TENTATIVE)) {
			memcpy(eui, ifp->addr.s6_addr+8, 8);
			err = 0;
			break;
		}
	}
	read_unlock_bh(&idev->lock);
	return err;
}

Project: linux-2.6

addrconf_prefix_route(struct in6_addr *pfx, int plen, struct net_device *dev,
		      unsigned long expires, u32 flags)
{
	struct in6_rtmsg rtmsg;

	memset(&rtmsg, 0, sizeof(rtmsg));
	ipv6_addr_copy(&rtmsg.rtmsg_dst, pfx);
	rtmsg.rtmsg_dst_len = plen;
	rtmsg.rtmsg_metric = IP6_RT_PRIO_ADDRCONF;
	rtmsg.rtmsg_ifindex = dev->ifindex;
	rtmsg.rtmsg_info = expires;
	rtmsg.rtmsg_flags = RTF_UP|flags;
	rtmsg.rtmsg_type = RTMSG_NEWROUTE;

	/* Prevent useless cloning on PtP SIT.
	   This thing is done here expecting that the whole
	   class of non-broadcast devices need not cloning.
	 */
	if (dev->type == ARPHRD_SIT && (dev->flags&IFF_POINTOPOINT))
		rtmsg.rtmsg_flags |= RTF_NONEXTHOP;

	ip6_route_add(&rtmsg, NULL, NULL, NULL);
}

Project: linux-2.6

static int ipv6_count_addresses(struct inet6_dev *idev)
{
	int cnt = 0;
	struct inet6_ifaddr *ifp;

	read_lock_bh(&idev->lock);
	for (ifp=idev->addr_list; ifp; ifp=ifp->if_next)
		cnt++;
	read_unlock_bh(&idev->lock);
	return cnt;
}

Project: linux-2.6

static int tunnel_bts(struct rsvp_head *data)
{
	int n = data->tgenerator>>5;
	u32 b = 1<<(data->tgenerator&0x1F);
	
	if (data->tmap[n]&b)
		return 0;
	data->tmap[n] |= b;
	return 1;
}

Project: linux-2.6

static void rsvp_put(struct tcf_proto *tp, unsigned long f)
{
}

Project: linux-2.6

static struct tcf_proto **cbq_find_tcf(struct Qdisc *sch, unsigned long arg)
{
	struct cbq_sched_data *q = qdisc_priv(sch);
	struct cbq_class *cl = (struct cbq_class *)arg;

	if (cl == NULL)
		cl = &q->link;

	return &cl->filter_list;
}

Project: linux-2.6

ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr, int pfxlen,
	      int scope, u32 flags)
{
	struct inet6_ifaddr *ifa = NULL;
	struct rt6_info *rt;
	int hash;
	int err = 0;

	read_lock_bh(&addrconf_lock);
	if (idev->dead) {
		err = -ENODEV;			/*XXX*/
		goto out2;
	}

	write_lock(&addrconf_hash_lock);

	/* Ignore adding duplicate addresses on an interface */
	if (ipv6_chk_same_addr(addr, idev->dev)) {
		ADBG(("ipv6_add_addr: already assigned\n"));
		err = -EEXIST;
		goto out;
	}

	ifa = kmalloc(sizeof(struct inet6_ifaddr), GFP_ATOMIC);

	if (ifa == NULL) {
		ADBG(("ipv6_add_addr: malloc failed\n"));
		err = -ENOBUFS;
		goto out;
	}

	rt = addrconf_dst_alloc(idev, addr, 0);
	if (IS_ERR(rt)) {
		err = PTR_ERR(rt);
		goto out;
	}

	memset(ifa, 0, sizeof(struct inet6_ifaddr));
	ipv6_addr_copy(&ifa->addr, addr);

	spin_lock_init(&ifa->lock);
	init_timer(&ifa->timer);
	ifa->timer.data = (unsigned long) ifa;
	ifa->scope = scope;
	ifa->prefix_len = pfxlen;
	ifa->flags = flags | IFA_F_TENTATIVE;
	ifa->cstamp = ifa->tstamp = jiffies;

	ifa->idev = idev;
	in6_dev_hold(idev);
	/* For caller */
	in6_ifa_hold(ifa);

	/* Add to big hash table */
	hash = ipv6_addr_hash(addr);

	ifa->lst_next = inet6_addr_lst[hash];
	inet6_addr_lst[hash] = ifa;
	in6_ifa_hold(ifa);
	write_unlock(&addrconf_hash_lock);

	write_lock(&idev->lock);
	/* Add to inet6_dev unicast addr list. */
	ifa->if_next = idev->addr_list;
	idev->addr_list = ifa;

#ifdef CONFIG_IPV6_PRIVACY
	if (ifa->flags&IFA_F_TEMPORARY) {
		ifa->tmp_next = idev->tempaddr_list;
		idev->tempaddr_list = ifa;
		in6_ifa_hold(ifa);
	}
#endif

	ifa->rt = rt;

	in6_ifa_hold(ifa);
	write_unlock(&idev->lock);
out2:
	read_unlock_bh(&addrconf_lock);

	if (likely(err == 0))
		notifier_call_chain(&inet6addr_chain, NETDEV_UP, ifa);
	else {
		kfree(ifa);
		ifa = ERR_PTR(err);
	}

	return ifa;
out:
	write_unlock(&addrconf_hash_lock);
	goto out2;
}

Project: linux-2.6

int ipv6_chk_same_addr(const struct in6_addr *addr, struct net_device *dev)
{
	struct inet6_ifaddr * ifp;
	u8 hash = ipv6_addr_hash(addr);

	for(ifp = inet6_addr_lst[hash]; ifp; ifp=ifp->lst_next) {
		if (ipv6_addr_equal(&ifp->addr, addr)) {
			if (dev == NULL || ifp->idev->dev == dev)
				break;
		}
	}
	return ifp != NULL;
}

Project: linux-2.6

int addrconf_add_ifaddr(void __user *arg)
{
	struct in6_ifreq ireq;
	int err;
	
	if (!capable(CAP_NET_ADMIN))
		return -EPERM;
	
	if (copy_from_user(&ireq, arg, sizeof(struct in6_ifreq)))
		return -EFAULT;

	rtnl_lock();
	err = inet6_addr_add(ireq.ifr6_ifindex, &ireq.ifr6_addr, ireq.ifr6_prefixlen);
	rtnl_unlock();
	return err;
}

Project: linux-2.6

static int cbq_reshape_fail(struct sk_buff *skb, struct Qdisc *child)
{
	int len = skb->len;
	struct Qdisc *sch = child->__parent;
	struct cbq_sched_data *q = qdisc_priv(sch);
	struct cbq_class *cl = q->rx_class;

	q->rx_class = NULL;

	if (cl && (cl = cbq_reclassify(skb, cl)) != NULL) {

		cbq_mark_toplevel(q, cl);

		q->rx_class = cl;
		cl->q->__parent = sch;

		if (cl->q->enqueue(skb, cl->q) == 0) {
			sch->q.qlen++;
			sch->bstats.packets++;
			sch->bstats.bytes+=len;
			if (!cl->next_alive)
				cbq_activate_class(cl);
			return 0;
		}
		sch->qstats.drops++;
		return 0;
	}

	sch->qstats.drops++;
	return -1;
}

Project: linux-2.6

static void cbq_undelay(unsigned long arg)
{
	struct Qdisc *sch = (struct Qdisc*)arg;
	struct cbq_sched_data *q = qdisc_priv(sch);
	long delay = 0;
	unsigned pmask;

	pmask = q->pmask;
	q->pmask = 0;

	while (pmask) {
		int prio = ffz(~pmask);
		long tmp;

		pmask &= ~(1<<prio);

		tmp = cbq_undelay_prio(q, prio);
		if (tmp > 0) {
			q->pmask |= 1<<prio;
			if (tmp < delay || delay == 0)
				delay = tmp;
		}
	}

	if (delay) {
		q->delay_timer.expires = jiffies + delay;
		add_timer(&q->delay_timer);
	}

	sch->flags &= ~TCQ_F_THROTTLED;
	netif_schedule(sch->dev);
}

Project: linux-2.6

static void cbq_normalize_quanta(struct cbq_sched_data *q, int prio)
{
	struct cbq_class *cl;
	unsigned h;

	if (q->quanta[prio] == 0)
		return;

	for (h=0; h<16; h++) {
		for (cl = q->classes[h]; cl; cl = cl->next) {
			/* BUGGGG... Beware! This expression suffer of
			   arithmetic overflows!
			 */
			if (cl->priority == prio) {
				cl->quantum = (cl->weight*cl->allot*q->nclasses[prio])/
					q->quanta[prio];
			}
			if (cl->quantum <= 0 || cl->quantum>32*cl->qdisc->dev->mtu) {
				printk(KERN_WARNING "CBQ: class %08x has bad quantum==%ld, repaired.\n", cl->classid, cl->quantum);
				cl->quantum = cl->qdisc->dev->mtu/2 + 1;
			}
		}
	}
}

Project: linux-2.6

static void sit_route_add(struct net_device *dev)
{
	struct in6_rtmsg rtmsg;

	memset(&rtmsg, 0, sizeof(rtmsg));

	rtmsg.rtmsg_type	= RTMSG_NEWROUTE;
	rtmsg.rtmsg_metric	= IP6_RT_PRIO_ADDRCONF;

	/* prefix length - 96 bits "::d.d.d.d" */
	rtmsg.rtmsg_dst_len	= 96;
	rtmsg.rtmsg_flags	= RTF_UP|RTF_NONEXTHOP;
	rtmsg.rtmsg_ifindex	= dev->ifindex;

	ip6_route_add(&rtmsg, NULL, NULL, NULL);
}

Project: linux-2.6

static void cbq_unlink_class(struct cbq_class *this)
{
	struct cbq_class *cl, **clp;
	struct cbq_sched_data *q = qdisc_priv(this->qdisc);

	for (clp = &q->classes[cbq_hash(this->classid)]; (cl = *clp) != NULL; clp = &cl->next) {
		if (cl == this) {
			*clp = cl->next;
			cl->next = NULL;
			break;
		}
	}

	if (this->tparent) {
		clp=&this->sibling;
		cl = *clp;
		do {
			if (cl == this) {
				*clp = cl->sibling;
				break;
			}
			clp = &cl->sibling;
		} while ((cl = *clp) != this->sibling);

		if (this->tparent->children == this) {
			this->tparent->children = this->sibling;
			if (this->sibling == this)
				this->tparent->children = NULL;
		}
	} else {
		BUG_TRAP(this->sibling == this);
	}
}

Project: linux-2.6

static void cbq_destroy_filters(struct cbq_class *cl)
{
	struct tcf_proto *tp;

	while ((tp = cl->filter_list) != NULL) {
		cl->filter_list = tp->next;
		tcf_destroy(tp);
	}
}

Project: linux-2.6

void in6_dev_finish_destroy(struct inet6_dev *idev)
{
	struct net_device *dev = idev->dev;
	BUG_TRAP(idev->addr_list==NULL);
	BUG_TRAP(idev->mc_list==NULL);
#ifdef NET_REFCNT_DEBUG
	printk(KERN_DEBUG "in6_dev_finish_destroy: %s\n", dev ? dev->name : "NIL");
#endif
	dev_put(dev);
	if (!idev->dead) {
		printk("Freeing alive inet6 device %p\n", idev);
		return;
	}
	snmp6_free_dev(idev);
	kfree(idev);
}

Project: linux-2.6

int addrconf_sysctl_forward(ctl_table *ctl, int write, struct file * filp,
			   void __user *buffer, size_t *lenp, loff_t *ppos)
{
	int *valp = ctl->data;
	int val = *valp;
	int ret;

	ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos);

	if (write && valp != &ipv6_devconf_dflt.forwarding) {
		if (valp != &ipv6_devconf.forwarding) {
			if ((!*valp) ^ (!val)) {
				struct inet6_dev *idev = (struct inet6_dev *)ctl->extra1;
				if (idev == NULL)
					return ret;
				dev_forward_change(idev);
			}
		} else {
			ipv6_devconf_dflt.forwarding = ipv6_devconf.forwarding;
			addrconf_forward_change();
		}
		if (*valp)
			rt6_purge_dflt_routers();
	}

        return ret;
}

Project: linux-2.6

void addrconf_leave_solict(struct inet6_dev *idev, struct in6_addr *addr)
{
	struct in6_addr maddr;

	if (idev->dev->flags&(IFF_LOOPBACK|IFF_NOARP))
		return;

	addrconf_addr_solict_mult(addr, &maddr);
	__ipv6_dev_mc_dec(idev, &maddr);
}

Project: linux-2.6

static int ipv6_generate_eui64(u8 *eui, struct net_device *dev)
{
	switch (dev->type) {
	case ARPHRD_ETHER:
	case ARPHRD_FDDI:
	case ARPHRD_IEEE802_TR:
		if (dev->addr_len != ETH_ALEN)
			return -1;
		memcpy(eui, dev->dev_addr, 3);
		memcpy(eui + 5, dev->dev_addr + 3, 3);

		/*
		 * The zSeries OSA network cards can be shared among various
		 * OS instances, but the OSA cards have only one MAC address.
		 * This leads to duplicate address conflicts in conjunction
		 * with IPv6 if more than one instance uses the same card.
		 * 
		 * The driver for these cards can deliver a unique 16-bit
		 * identifier for each instance sharing the same card.  It is
		 * placed instead of 0xFFFE in the interface identifier.  The
		 * "u" bit of the interface identifier is not inverted in this
		 * case.  Hence the resulting interface identifier has local
		 * scope according to RFC2373.
		 */
		if (dev->dev_id) {
			eui[3] = (dev->dev_id >> 8) & 0xFF;
			eui[4] = dev->dev_id & 0xFF;
		} else {
			eui[3] = 0xFF;
			eui[4] = 0xFE;
			eui[0] ^= 2;
		}
		return 0;
	case ARPHRD_ARCNET:
		/* XXX: inherit EUI-64 from other interface -- yoshfuji */
		if (dev->addr_len != ARCNET_ALEN)
			return -1;
		memset(eui, 0, 7);
		eui[7] = *(u8*)dev->dev_addr;
		return 0;
	case ARPHRD_INFINIBAND:
		if (dev->addr_len != INFINIBAND_ALEN)
			return -1;
		memcpy(eui, dev->dev_addr + 12, 8);
		eui[0] |= 2;
		return 0;
	}
	return -1;
}

Project: linux-2.6

static void addrconf_add_linklocal(struct inet6_dev *idev, struct in6_addr *addr)
{
	struct inet6_ifaddr * ifp;

	ifp = ipv6_add_addr(idev, addr, 64, IFA_LINK, IFA_F_PERMANENT);
	if (!IS_ERR(ifp)) {
		addrconf_dad_start(ifp, 0);
		in6_ifa_put(ifp);
	}
}

Project: linux-2.6

static void cbq_put(struct Qdisc *sch, unsigned long arg)
{
	struct cbq_class *cl = (struct cbq_class*)arg;

	if (--cl->refcnt == 0) {
#ifdef CONFIG_NET_CLS_POLICE
		struct cbq_sched_data *q = qdisc_priv(sch);

		spin_lock_bh(&sch->dev->queue_lock);
		if (q->rx_class == cl)
			q->rx_class = NULL;
		spin_unlock_bh(&sch->dev->queue_lock);
#endif

		cbq_destroy_class(sch, cl);
	}
}

Project: linux-2.6

cbq_mark_toplevel(struct cbq_sched_data *q, struct cbq_class *cl)
{
	int toplevel = q->toplevel;

	if (toplevel > cl->level && !(cl->q->flags&TCQ_F_THROTTLED)) {
		psched_time_t now;
		psched_tdiff_t incr;

		PSCHED_GET_TIME(now);
		incr = PSCHED_TDIFF(now, q->now_rt);
		PSCHED_TADD2(q->now, incr, now);

		do {
			if (PSCHED_TLESS(cl->undertime, now)) {
				q->toplevel = cl->level;
				return;
			}
		} while ((cl=cl->borrow) != NULL && toplevel > cl->level);
	}
}

Project: linux-2.6

static int cbq_set_lss(struct cbq_class *cl, struct tc_cbq_lssopt *lss)
{
	if (lss->change&TCF_CBQ_LSS_FLAGS) {
		cl->share = (lss->flags&TCF_CBQ_LSS_ISOLATED) ? NULL : cl->tparent;
		cl->borrow = (lss->flags&TCF_CBQ_LSS_BOUNDED) ? NULL : cl->tparent;
	}
	if (lss->change&TCF_CBQ_LSS_EWMA)
		cl->ewma_log = lss->ewma_log;
	if (lss->change&TCF_CBQ_LSS_AVPKT)
		cl->avpkt = lss->avpkt;
	if (lss->change&TCF_CBQ_LSS_MINIDLE)
		cl->minidle = -(long)lss->minidle;
	if (lss->change&TCF_CBQ_LSS_MAXIDLE) {
		cl->maxidle = lss->maxidle;
		cl->avgidle = lss->maxidle;
	}
	if (lss->change&TCF_CBQ_LSS_OFFTIME)
		cl->offtime = lss->offtime;
	return 0;
}

Project: linux-2.6

static int inet6_fill_ifacaddr(struct sk_buff *skb, struct ifacaddr6 *ifaca,
				u32 pid, u32 seq, int event, unsigned int flags)
{
	struct ifaddrmsg *ifm;
	struct nlmsghdr  *nlh;
	struct ifa_cacheinfo ci;
	unsigned char	 *b = skb->tail;

	nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*ifm), flags);
	ifm = NLMSG_DATA(nlh);
	ifm->ifa_family = AF_INET6;	
	ifm->ifa_prefixlen = 128;
	ifm->ifa_flags = IFA_F_PERMANENT;
	ifm->ifa_scope = RT_SCOPE_UNIVERSE;
	if (ipv6_addr_scope(&ifaca->aca_addr)&IFA_SITE)
		ifm->ifa_scope = RT_SCOPE_SITE;
	ifm->ifa_index = ifaca->aca_idev->dev->ifindex;
	RTA_PUT(skb, IFA_ANYCAST, 16, &ifaca->aca_addr);
	ci.cstamp = (__u32)(TIME_DELTA(ifaca->aca_cstamp, INITIAL_JIFFIES) / HZ
		    * 100 + TIME_DELTA(ifaca->aca_cstamp, INITIAL_JIFFIES) % HZ
		    * 100 / HZ);
	ci.tstamp = (__u32)(TIME_DELTA(ifaca->aca_tstamp, INITIAL_JIFFIES) / HZ
		    * 100 + TIME_DELTA(ifaca->aca_tstamp, INITIAL_JIFFIES) % HZ
		    * 100 / HZ);
	ci.ifa_prefered = INFINITY_LIFE_TIME;
	ci.ifa_valid = INFINITY_LIFE_TIME;
	RTA_PUT(skb, IFA_CACHEINFO, sizeof(ci), &ci);
	nlh->nlmsg_len = skb->tail - b;
	return skb->len;

nlmsg_failure:
rtattr_failure:
	skb_trim(skb, b - skb->data);
	return -1;
}

Project: linux-2.6

void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len)
{
	struct prefix_info *pinfo;
	__u32 valid_lft;
	__u32 prefered_lft;
	int addr_type;
	unsigned long rt_expires;
	struct inet6_dev *in6_dev;

	pinfo = (struct prefix_info *) opt;
	
	if (len < sizeof(struct prefix_info)) {
		ADBG(("addrconf: prefix option too short\n"));
		return;
	}
	
	/*
	 *	Validation checks ([ADDRCONF], page 19)
	 */

	addr_type = ipv6_addr_type(&pinfo->prefix);

	if (addr_type & (IPV6_ADDR_MULTICAST|IPV6_ADDR_LINKLOCAL))
		return;

	valid_lft = ntohl(pinfo->valid);
	prefered_lft = ntohl(pinfo->prefered);

	if (prefered_lft > valid_lft) {
		if (net_ratelimit())
			printk(KERN_WARNING "addrconf: prefix option has invalid lifetime\n");
		return;
	}

	in6_dev = in6_dev_get(dev);

	if (in6_dev == NULL) {
		if (net_ratelimit())
			printk(KERN_DEBUG "addrconf: device %s not configured\n", dev->name);
		return;
	}

	/*
	 *	Two things going on here:
	 *	1) Add routes for on-link prefixes
	 *	2) Configure prefixes with the auto flag set
	 */

	/* Avoid arithmetic overflow. Really, we could
	   save rt_expires in seconds, likely valid_lft,
	   but it would require division in fib gc, that it
	   not good.
	 */
	if (valid_lft >= 0x7FFFFFFF/HZ)
		rt_expires = 0;
	else
		rt_expires = jiffies + valid_lft * HZ;

	if (pinfo->onlink) {
		struct rt6_info *rt;
		rt = rt6_lookup(&pinfo->prefix, NULL, dev->ifindex, 1);

		if (rt && ((rt->rt6i_flags & (RTF_GATEWAY | RTF_DEFAULT)) == 0)) {
			if (rt->rt6i_flags&RTF_EXPIRES) {
				if (valid_lft == 0) {
					ip6_del_rt(rt, NULL, NULL, NULL);
					rt = NULL;
				} else {
					rt->rt6i_expires = rt_expires;
				}
			}
		} else if (valid_lft) {
			addrconf_prefix_route(&pinfo->prefix, pinfo->prefix_len,
					      dev, rt_expires, RTF_ADDRCONF|RTF_EXPIRES|RTF_PREFIX_RT);
		}
		if (rt)
			dst_release(&rt->u.dst);
	}

	/* Try to figure out our local address for this prefix */

	if (pinfo->autoconf && in6_dev->cnf.autoconf) {
		struct inet6_ifaddr * ifp;
		struct in6_addr addr;
		int create = 0, update_lft = 0;

		if (pinfo->prefix_len == 64) {
			memcpy(&addr, &pinfo->prefix, 8);
			if (ipv6_generate_eui64(addr.s6_addr + 8, dev) &&
			    ipv6_inherit_eui64(addr.s6_addr + 8, in6_dev)) {
				in6_dev_put(in6_dev);
				return;
			}
			goto ok;
		}
		if (net_ratelimit())
			printk(KERN_DEBUG "IPv6 addrconf: prefix with wrong length %d\n",
			       pinfo->prefix_len);
		in6_dev_put(in6_dev);
		return;

ok:

		ifp = ipv6_get_ifaddr(&addr, dev, 1);

		if (ifp == NULL && valid_lft) {
			int max_addresses = in6_dev->cnf.max_addresses;

			/* Do not allow to create too much of autoconfigured
			 * addresses; this would be too easy way to crash kernel.
			 */
			if (!max_addresses ||
			    ipv6_count_addresses(in6_dev) < max_addresses)
				ifp = ipv6_add_addr(in6_dev, &addr, pinfo->prefix_len,
						    addr_type&IPV6_ADDR_SCOPE_MASK, 0);

			if (!ifp || IS_ERR(ifp)) {
				in6_dev_put(in6_dev);
				return;
			}

			update_lft = create = 1;
			ifp->cstamp = jiffies;
			addrconf_dad_start(ifp, RTF_ADDRCONF|RTF_PREFIX_RT);
		}

		if (ifp) {
			int flags;
			unsigned long now;
#ifdef CONFIG_IPV6_PRIVACY
			struct inet6_ifaddr *ift;
#endif
			u32 stored_lft;

			/* update lifetime (RFC2462 5.5.3 e) */
			spin_lock(&ifp->lock);
			now = jiffies;
			if (ifp->valid_lft > (now - ifp->tstamp) / HZ)
				stored_lft = ifp->valid_lft - (now - ifp->tstamp) / HZ;
			else
				stored_lft = 0;
			if (!update_lft && stored_lft) {
				if (valid_lft > MIN_VALID_LIFETIME ||
				    valid_lft > stored_lft)
					update_lft = 1;
				else if (stored_lft <= MIN_VALID_LIFETIME) {
					/* valid_lft <= stored_lft is always true */
					/* XXX: IPsec */
					update_lft = 0;
				} else {
					valid_lft = MIN_VALID_LIFETIME;
					if (valid_lft < prefered_lft)
						prefered_lft = valid_lft;
					update_lft = 1;
				}
			}

			if (update_lft) {
				ifp->valid_lft = valid_lft;
				ifp->prefered_lft = prefered_lft;
				ifp->tstamp = now;
				flags = ifp->flags;
				ifp->flags &= ~IFA_F_DEPRECATED;
				spin_unlock(&ifp->lock);

				if (!(flags&IFA_F_TENTATIVE))
					ipv6_ifa_notify(0, ifp);
			} else
				spin_unlock(&ifp->lock);

#ifdef CONFIG_IPV6_PRIVACY
			read_lock_bh(&in6_dev->lock);
			/* update all temporary addresses in the list */
			for (ift=in6_dev->tempaddr_list; ift; ift=ift->tmp_next) {
				/*
				 * When adjusting the lifetimes of an existing
				 * temporary address, only lower the lifetimes.
				 * Implementations must not increase the
				 * lifetimes of an existing temporary address
				 * when processing a Prefix Information Option.
				 */
				spin_lock(&ift->lock);
				flags = ift->flags;
				if (ift->valid_lft > valid_lft &&
				    ift->valid_lft - valid_lft > (jiffies - ift->tstamp) / HZ)
					ift->valid_lft = valid_lft + (jiffies - ift->tstamp) / HZ;
				if (ift->prefered_lft > prefered_lft &&
				    ift->prefered_lft - prefered_lft > (jiffies - ift->tstamp) / HZ)
					ift->prefered_lft = prefered_lft + (jiffies - ift->tstamp) / HZ;
				spin_unlock(&ift->lock);
				if (!(flags&IFA_F_TENTATIVE))
					ipv6_ifa_notify(0, ift);
			}

			if (create && in6_dev->cnf.use_tempaddr > 0) {
				/*
				 * When a new public address is created as described in [ADDRCONF],
				 * also create a new temporary address.
				 */
				read_unlock_bh(&in6_dev->lock); 
				ipv6_create_tempaddr(ifp, NULL);
			} else {
				read_unlock_bh(&in6_dev->lock);
			}
#endif
			in6_ifa_put(ifp);
			addrconf_verify(0);
		}
	}
	inet6_prefix_notify(RTM_NEWPREFIX, in6_dev, pinfo);
	in6_dev_put(in6_dev);
}

Project: linux-2.6

static void addrconf_dad_start(struct inet6_ifaddr *ifp, u32 flags)
{
	struct inet6_dev *idev = ifp->idev;
	struct net_device *dev = idev->dev;
	unsigned long rand_num;

	addrconf_join_solict(dev, &ifp->addr);

	if (ifp->prefix_len != 128 && (ifp->flags&IFA_F_PERMANENT))
		addrconf_prefix_route(&ifp->addr, ifp->prefix_len, dev, 0,
					flags);

	net_srandom(ifp->addr.s6_addr32[3]);
	rand_num = net_random() % (idev->cnf.rtr_solicit_delay ? : 1);

	read_lock_bh(&idev->lock);
	if (ifp->dead)
		goto out;
	spin_lock_bh(&ifp->lock);

	if (dev->flags&(IFF_NOARP|IFF_LOOPBACK) ||
	    !(ifp->flags&IFA_F_TENTATIVE)) {
		ifp->flags &= ~IFA_F_TENTATIVE;
		spin_unlock_bh(&ifp->lock);
		read_unlock_bh(&idev->lock);

		addrconf_dad_completed(ifp);
		return;
	}

	ifp->probes = idev->cnf.dad_transmits;
	addrconf_mod_timer(ifp, AC_DAD, rand_num);

	spin_unlock_bh(&ifp->lock);
out:
	read_unlock_bh(&idev->lock);
}

Project: linux-2.6

static void addrconf_dad_timer(unsigned long data)
{
	struct inet6_ifaddr *ifp = (struct inet6_ifaddr *) data;
	struct inet6_dev *idev = ifp->idev;
	struct in6_addr unspec;
	struct in6_addr mcaddr;

	read_lock_bh(&idev->lock);
	if (idev->dead) {
		read_unlock_bh(&idev->lock);
		goto out;
	}
	spin_lock_bh(&ifp->lock);
	if (ifp->probes == 0) {
		/*
		 * DAD was successful
		 */

		ifp->flags &= ~IFA_F_TENTATIVE;
		spin_unlock_bh(&ifp->lock);
		read_unlock_bh(&idev->lock);

		addrconf_dad_completed(ifp);

		goto out;
	}

	ifp->probes--;
	addrconf_mod_timer(ifp, AC_DAD, ifp->idev->nd_parms->retrans_time);
	spin_unlock_bh(&ifp->lock);
	read_unlock_bh(&idev->lock);

	/* send a neighbour solicitation for our addr */
	memset(&unspec, 0, sizeof(unspec));
	addrconf_addr_solict_mult(&ifp->addr, &mcaddr);
	ndisc_send_ns(ifp->idev->dev, NULL, &ifp->addr, &mcaddr, &unspec);
out:
	in6_ifa_put(ifp);
}

Project: linux-2.6

inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
{
	struct rtattr  **rta = arg;
	struct ifaddrmsg *ifm = NLMSG_DATA(nlh);
	struct in6_addr *pfx;

	pfx = NULL;
	if (rta[IFA_ADDRESS-1]) {
		if (RTA_PAYLOAD(rta[IFA_ADDRESS-1]) < sizeof(*pfx))
			return -EINVAL;
		pfx = RTA_DATA(rta[IFA_ADDRESS-1]);
	}
	if (rta[IFA_LOCAL-1]) {
		if (pfx && memcmp(pfx, RTA_DATA(rta[IFA_LOCAL-1]), sizeof(*pfx)))
			return -EINVAL;
		pfx = RTA_DATA(rta[IFA_LOCAL-1]);
	}
	if (pfx == NULL)
		return -EINVAL;

	return inet6_addr_add(ifm->ifa_index, pfx, ifm->ifa_prefixlen);
}

Project: linux-2.6

static __inline__ void cbq_activate_class(struct cbq_class *cl)
{
	struct cbq_sched_data *q = qdisc_priv(cl->qdisc);
	int prio = cl->cpriority;
	struct cbq_class *cl_tail;

	cl_tail = q->active[prio];
	q->active[prio] = cl;

	if (cl_tail != NULL) {
		cl->next_alive = cl_tail->next_alive;
		cl_tail->next_alive = cl;
	} else {
		cl->next_alive = cl;
		q->activemask |= (1<<prio);
	}
}

Project: linux-2.6

int ipv6_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2)
{
	const struct in6_addr *sk_rcv_saddr6 = &inet6_sk(sk)->rcv_saddr;
	const struct in6_addr *sk2_rcv_saddr6 = tcp_v6_rcv_saddr(sk2);
	u32 sk_rcv_saddr = inet_sk(sk)->rcv_saddr;
	u32 sk2_rcv_saddr = tcp_v4_rcv_saddr(sk2);
	int sk_ipv6only = ipv6_only_sock(sk);
	int sk2_ipv6only = tcp_v6_ipv6only(sk2);
	int addr_type = ipv6_addr_type(sk_rcv_saddr6);
	int addr_type2 = sk2_rcv_saddr6 ? ipv6_addr_type(sk2_rcv_saddr6) : IPV6_ADDR_MAPPED;

	if (!sk2_rcv_saddr && !sk_ipv6only)
		return 1;

	if (addr_type2 == IPV6_ADDR_ANY &&
	    !(sk2_ipv6only && addr_type == IPV6_ADDR_MAPPED))
		return 1;

	if (addr_type == IPV6_ADDR_ANY &&
	    !(sk_ipv6only && addr_type2 == IPV6_ADDR_MAPPED))
		return 1;

	if (sk2_rcv_saddr6 &&
	    ipv6_addr_equal(sk_rcv_saddr6, sk2_rcv_saddr6))
		return 1;

	if (addr_type == IPV6_ADDR_MAPPED &&
	    !sk2_ipv6only &&
	    (!sk2_rcv_saddr || !sk_rcv_saddr || sk_rcv_saddr == sk2_rcv_saddr))
		return 1;

	return 0;
}

Project: linux-2.6

static int cbq_delete(struct Qdisc *sch, unsigned long arg)
{
	struct cbq_sched_data *q = qdisc_priv(sch);
	struct cbq_class *cl = (struct cbq_class*)arg;

	if (cl->filters || cl->children || cl == &q->link)
		return -EBUSY;

	sch_tree_lock(sch);

	if (cl->next_alive)
		cbq_deactivate_class(cl);

	if (q->tx_borrowed == cl)
		q->tx_borrowed = q->tx_class;
	if (q->tx_class == cl) {
		q->tx_class = NULL;
		q->tx_borrowed = NULL;
	}
#ifdef CONFIG_NET_CLS_POLICE
	if (q->rx_class == cl)
		q->rx_class = NULL;
#endif

	cbq_unlink_class(cl);
	cbq_adjust_levels(cl->tparent);
	cl->defmap = 0;
	cbq_sync_defmap(cl);

	cbq_rmprio(q, cl);
	sch_tree_unlock(sch);

	if (--cl->refcnt == 0)
		cbq_destroy_class(sch, cl);

	return 0;
}

Project: linux-2.6

static int addrconf_notify(struct notifier_block *this, unsigned long event, 
			   void * data)
{
	struct net_device *dev = (struct net_device *) data;
	struct inet6_dev *idev = __in6_dev_get(dev);

	switch(event) {
	case NETDEV_UP:
		switch(dev->type) {
		case ARPHRD_SIT:
			addrconf_sit_config(dev);
			break;
		case ARPHRD_TUNNEL6:
			addrconf_ip6_tnl_config(dev);
			break;
		case ARPHRD_LOOPBACK:
			init_loopback(dev);
			break;

		default:
			addrconf_dev_config(dev);
			break;
		};
		if (idev) {
			/* If the MTU changed during the interface down, when the
			   interface up, the changed MTU must be reflected in the
			   idev as well as routers.
			 */
			if (idev->cnf.mtu6 != dev->mtu && dev->mtu >= IPV6_MIN_MTU) {
				rt6_mtu_change(dev, dev->mtu);
				idev->cnf.mtu6 = dev->mtu;
			}
			idev->tstamp = jiffies;
			inet6_ifinfo_notify(RTM_NEWLINK, idev);
			/* If the changed mtu during down is lower than IPV6_MIN_MTU
			   stop IPv6 on this interface.
			 */
			if (dev->mtu < IPV6_MIN_MTU)
				addrconf_ifdown(dev, event != NETDEV_DOWN);
		}
		break;

	case NETDEV_CHANGEMTU:
		if ( idev && dev->mtu >= IPV6_MIN_MTU) {
			rt6_mtu_change(dev, dev->mtu);
			idev->cnf.mtu6 = dev->mtu;
			break;
		}

		/* MTU falled under IPV6_MIN_MTU. Stop IPv6 on this interface. */

	case NETDEV_DOWN:
	case NETDEV_UNREGISTER:
		/*
		 *	Remove all addresses from this interface.
		 */
		addrconf_ifdown(dev, event != NETDEV_DOWN);
		break;
	case NETDEV_CHANGE:
		break;
	case NETDEV_CHANGENAME:
#ifdef CONFIG_SYSCTL
		if (idev) {
			addrconf_sysctl_unregister(&idev->cnf);
			neigh_sysctl_unregister(idev->nd_parms);
			neigh_sysctl_register(dev, idev->nd_parms,
					      NET_IPV6, NET_IPV6_NEIGH, "ipv6",
					      &ndisc_ifinfo_sysctl_change,
					      NULL);
			addrconf_sysctl_register(idev, &idev->cnf);
		}
#endif
		break;
	};

	return NOTIFY_OK;
}

Project: linux-2.6

static void cbq_ovl_lowprio(struct cbq_class *cl)
{
	struct cbq_sched_data *q = qdisc_priv(cl->qdisc);

	cl->penalized = jiffies + cl->penalty;

	if (cl->cpriority != cl->priority2) {
		cl->cpriority = cl->priority2;
		q->pmask |= (1<<cl->cpriority);
		cl->xstats.overactions++;
	}
	cbq_ovl_classic(cl);
}

Project: linux-2.6

static void ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
{
	read_lock_bh(&addrconf_lock);
	if (likely(ifp->idev->dead == 0))
		__ipv6_ifa_notify(event, ifp);
	read_unlock_bh(&addrconf_lock);
}

Project: linux-2.6

static void ipv6_del_addr(struct inet6_ifaddr *ifp)
{
	struct inet6_ifaddr *ifa, **ifap;
	struct inet6_dev *idev = ifp->idev;
	int hash;
	int deleted = 0, onlink = 0;
	unsigned long expires = jiffies;

	hash = ipv6_addr_hash(&ifp->addr);

	ifp->dead = 1;

	write_lock_bh(&addrconf_hash_lock);
	for (ifap = &inet6_addr_lst[hash]; (ifa=*ifap) != NULL;
	     ifap = &ifa->lst_next) {
		if (ifa == ifp) {
			*ifap = ifa->lst_next;
			__in6_ifa_put(ifp);
			ifa->lst_next = NULL;
			break;
		}
	}
	write_unlock_bh(&addrconf_hash_lock);

	write_lock_bh(&idev->lock);
#ifdef CONFIG_IPV6_PRIVACY
	if (ifp->flags&IFA_F_TEMPORARY) {
		for (ifap = &idev->tempaddr_list; (ifa=*ifap) != NULL;
		     ifap = &ifa->tmp_next) {
			if (ifa == ifp) {
				*ifap = ifa->tmp_next;
				if (ifp->ifpub) {
					in6_ifa_put(ifp->ifpub);
					ifp->ifpub = NULL;
				}
				__in6_ifa_put(ifp);
				ifa->tmp_next = NULL;
				break;
			}
		}
	}
#endif

	for (ifap = &idev->addr_list; (ifa=*ifap) != NULL;
	     ifap = &ifa->if_next) {
		if (ifa == ifp) {
			*ifap = ifa->if_next;
			__in6_ifa_put(ifp);
			ifa->if_next = NULL;
			if (!(ifp->flags & IFA_F_PERMANENT) || onlink > 0)
				break;
			deleted = 1;
		} else if (ifp->flags & IFA_F_PERMANENT) {
			if (ipv6_prefix_equal(&ifa->addr, &ifp->addr,
					      ifp->prefix_len)) {
				if (ifa->flags & IFA_F_PERMANENT) {
					onlink = 1;
					if (deleted)
						break;
				} else {
					unsigned long lifetime;

					if (!onlink)
						onlink = -1;

					spin_lock(&ifa->lock);
					lifetime = min_t(unsigned long,
							 ifa->valid_lft, 0x7fffffffUL/HZ);
					if (time_before(expires,
							ifa->tstamp + lifetime * HZ))
						expires = ifa->tstamp + lifetime * HZ;
					spin_unlock(&ifa->lock);
				}
			}
		}
	}
	write_unlock_bh(&idev->lock);

	ipv6_ifa_notify(RTM_DELADDR, ifp);

	notifier_call_chain(&inet6addr_chain,NETDEV_DOWN,ifp);

	addrconf_del_timer(ifp);

	/*
	 * Purge or update corresponding prefix
	 *
	 * 1) we don't purge prefix here if address was not permanent.
	 *    prefix is managed by its own lifetime.
	 * 2) if there're no addresses, delete prefix.
	 * 3) if there're still other permanent address(es),
	 *    corresponding prefix is still permanent.
	 * 4) otherwise, update prefix lifetime to the
	 *    longest valid lifetime among the corresponding
	 *    addresses on the device.
	 *    Note: subsequent RA will update lifetime.
	 *
	 * --yoshfuji
	 */
	if ((ifp->flags & IFA_F_PERMANENT) && onlink < 1) {
		struct in6_addr prefix;
		struct rt6_info *rt;

		ipv6_addr_prefix(&prefix, &ifp->addr, ifp->prefix_len);
		rt = rt6_lookup(&prefix, NULL, ifp->idev->dev->ifindex, 1);

		if (rt && ((rt->rt6i_flags & (RTF_GATEWAY | RTF_DEFAULT)) == 0)) {
			if (onlink == 0) {
				ip6_del_rt(rt, NULL, NULL, NULL);
				rt = NULL;
			} else if (!(rt->rt6i_flags & RTF_EXPIRES)) {
				rt->rt6i_expires = expires;
				rt->rt6i_flags |= RTF_EXPIRES;
			}
		}
		dst_release(&rt->u.dst);
	}

	in6_ifa_put(ifp);
}

Project: linux-2.6

static void dev_forward_change(struct inet6_dev *idev)
{
	struct net_device *dev;
	struct inet6_ifaddr *ifa;
	struct in6_addr addr;

	if (!idev)
		return;
	dev = idev->dev;
	if (dev && (dev->flags & IFF_MULTICAST)) {
		ipv6_addr_all_routers(&addr);
	
		if (idev->cnf.forwarding)
			ipv6_dev_mc_inc(dev, &addr);
		else
			ipv6_dev_mc_dec(dev, &addr);
	}
	for (ifa=idev->addr_list; ifa; ifa=ifa->if_next) {
		if (idev->cnf.forwarding)
			addrconf_join_anycast(ifa);
		else
			addrconf_leave_anycast(ifa);
	}
}

Project: linux-2.6

static unsigned long cbq_bind_filter(struct Qdisc *sch, unsigned long parent,
				     u32 classid)
{
	struct cbq_sched_data *q = qdisc_priv(sch);
	struct cbq_class *p = (struct cbq_class*)parent;
	struct cbq_class *cl = cbq_class_lookup(q, classid);

	if (cl) {
		if (p && p->level <= cl->level)
			return 0;
		cl->filters++;
		return (unsigned long)cl;
	}
	return 0;
}

Project: linux-2.6

static int cbq_graft(struct Qdisc *sch, unsigned long arg, struct Qdisc *new,
		     struct Qdisc **old)
{
	struct cbq_class *cl = (struct cbq_class*)arg;

	if (cl) {
		if (new == NULL) {
			if ((new = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops)) == NULL)
				return -ENOBUFS;
		} else {
#ifdef CONFIG_NET_CLS_POLICE
			if (cl->police == TC_POLICE_RECLASSIFY)
				new->reshape_fail = cbq_reshape_fail;
#endif
		}
		sch_tree_lock(sch);
		*old = cl->q;
		cl->q = new;
		sch->q.qlen -= (*old)->q.qlen;
		qdisc_reset(*old);
		sch_tree_unlock(sch);

		return 0;
	}
	return -ENOENT;
}

Project: linux-2.6

cbq_update_toplevel(struct cbq_sched_data *q, struct cbq_class *cl,
		    struct cbq_class *borrowed)
{
	if (cl && q->toplevel >= borrowed->level) {
		if (cl->q->q.qlen > 1) {
			do {
				if (PSCHED_IS_PASTPERFECT(borrowed->undertime)) {
					q->toplevel = borrowed->level;
					return;
				}
			} while ((borrowed=borrowed->borrow) != NULL);
		}
#if 0	
	/* It is not necessary now. Uncommenting it
	   will save CPU cycles, but decrease fairness.
	 */
		q->toplevel = TC_CBQ_MAXLEVEL;
#endif
	}
}

Project: linux-2.6

static void cbq_unbind_filter(struct Qdisc *sch, unsigned long arg)
{
	struct cbq_class *cl = (struct cbq_class*)arg;

	cl->filters--;
}

Project: linux-2.6

static void addrconf_ip6_tnl_config(struct net_device *dev)
{
	struct inet6_dev *idev;

	ASSERT_RTNL();

	if ((idev = addrconf_add_dev(dev)) == NULL) {
		printk(KERN_DEBUG "init ip6-ip6: add_dev failed\n");
		return;
	}
	ip6_tnl_add_linklocal(idev);
	addrconf_add_mroute(dev);
}

Project: linux-2.6

ipv6_inherit_linklocal(struct inet6_dev *idev, struct net_device *link_dev)
{
	struct in6_addr lladdr;

	if (!ipv6_get_lladdr(link_dev, &lladdr)) {
		addrconf_add_linklocal(idev, &lladdr);
		return 0;
	}
	return -1;
}

Project: linux-2.6

static void addrconf_verify(unsigned long foo)
{
	struct inet6_ifaddr *ifp;
	unsigned long now, next;
	int i;

	spin_lock_bh(&addrconf_verify_lock);
	now = jiffies;
	next = now + ADDR_CHECK_FREQUENCY;

	del_timer(&addr_chk_timer);

	for (i=0; i < IN6_ADDR_HSIZE; i++) {

restart:
		write_lock(&addrconf_hash_lock);
		for (ifp=inet6_addr_lst[i]; ifp; ifp=ifp->lst_next) {
			unsigned long age;
#ifdef CONFIG_IPV6_PRIVACY
			unsigned long regen_advance;
#endif

			if (ifp->flags & IFA_F_PERMANENT)
				continue;

			spin_lock(&ifp->lock);
			age = (now - ifp->tstamp) / HZ;

#ifdef CONFIG_IPV6_PRIVACY
			regen_advance = ifp->idev->cnf.regen_max_retry * 
					ifp->idev->cnf.dad_transmits * 
					ifp->idev->nd_parms->retrans_time / HZ;
#endif

			if (age >= ifp->valid_lft) {
				spin_unlock(&ifp->lock);
				in6_ifa_hold(ifp);
				write_unlock(&addrconf_hash_lock);
				ipv6_del_addr(ifp);
				goto restart;
			} else if (age >= ifp->prefered_lft) {
				/* jiffies - ifp->tsamp > age >= ifp->prefered_lft */
				int deprecate = 0;

				if (!(ifp->flags&IFA_F_DEPRECATED)) {
					deprecate = 1;
					ifp->flags |= IFA_F_DEPRECATED;
				}

				if (time_before(ifp->tstamp + ifp->valid_lft * HZ, next))
					next = ifp->tstamp + ifp->valid_lft * HZ;

				spin_unlock(&ifp->lock);

				if (deprecate) {
					in6_ifa_hold(ifp);
					write_unlock(&addrconf_hash_lock);

					ipv6_ifa_notify(0, ifp);
					in6_ifa_put(ifp);
					goto restart;
				}
#ifdef CONFIG_IPV6_PRIVACY
			} else if ((ifp->flags&IFA_F_TEMPORARY) &&
				   !(ifp->flags&IFA_F_TENTATIVE)) {
				if (age >= ifp->prefered_lft - regen_advance) {
					struct inet6_ifaddr *ifpub = ifp->ifpub;
					if (time_before(ifp->tstamp + ifp->prefered_lft * HZ, next))
						next = ifp->tstamp + ifp->prefered_lft * HZ;
					if (!ifp->regen_count && ifpub) {
						ifp->regen_count++;
						in6_ifa_hold(ifp);
						in6_ifa_hold(ifpub);
						spin_unlock(&ifp->lock);
						write_unlock(&addrconf_hash_lock);
						ipv6_create_tempaddr(ifpub, ifp);
						in6_ifa_put(ifpub);
						in6_ifa_put(ifp);
						goto restart;
					}
				} else if (time_before(ifp->tstamp + ifp->prefered_lft * HZ - regen_advance * HZ, next))
					next = ifp->tstamp + ifp->prefered_lft * HZ - regen_advance * HZ;
				spin_unlock(&ifp->lock);
#endif
			} else {
				/* ifp->prefered_lft <= ifp->valid_lft */
				if (time_before(ifp->tstamp + ifp->prefered_lft * HZ, next))
					next = ifp->tstamp + ifp->prefered_lft * HZ;
				spin_unlock(&ifp->lock);
			}
		}
		write_unlock(&addrconf_hash_lock);
	}

	addr_chk_timer.expires = time_before(next, jiffies + HZ) ? jiffies + HZ : next;
	add_timer(&addr_chk_timer);
	spin_unlock_bh(&addrconf_verify_lock);
}

Project: linux-2.6

static __inline__ unsigned hash_src(u32 *src)
{
	unsigned h = src[RSVP_DST_LEN-1];
	h ^= h>>16;
	h ^= h>>8;
	h ^= h>>4;
	return h & 0xF;
}

Project: linux-2.6

static int rsvp_dump(struct tcf_proto *tp, unsigned long fh,
		     struct sk_buff *skb, struct tcmsg *t)
{
	struct rsvp_filter *f = (struct rsvp_filter*)fh;
	struct rsvp_session *s;
	unsigned char	 *b = skb->tail;
	struct rtattr *rta;
	struct tc_rsvp_pinfo pinfo;

	if (f == NULL)
		return skb->len;
	s = f->sess;

	t->tcm_handle = f->handle;


	rta = (struct rtattr*)b;
	RTA_PUT(skb, TCA_OPTIONS, 0, NULL);

	RTA_PUT(skb, TCA_RSVP_DST, sizeof(s->dst), &s->dst);
	pinfo.dpi = s->dpi;
	pinfo.spi = f->spi;
	pinfo.protocol = s->protocol;
	pinfo.tunnelid = s->tunnelid;
	pinfo.tunnelhdr = f->tunnelhdr;
	pinfo.pad = 0;
	RTA_PUT(skb, TCA_RSVP_PINFO, sizeof(pinfo), &pinfo);
	if (f->res.classid)
		RTA_PUT(skb, TCA_RSVP_CLASSID, 4, &f->res.classid);
	if (((f->handle>>8)&0xFF) != 16)
		RTA_PUT(skb, TCA_RSVP_SRC, sizeof(f->src), f->src);

	if (tcf_exts_dump(skb, &f->exts, &rsvp_ext_map) < 0)
		goto rtattr_failure;

	rta->rta_len = skb->tail - b;

	if (tcf_exts_dump_stats(skb, &f->exts, &rsvp_ext_map) < 0)
		goto rtattr_failure;
	return skb->len;

rtattr_failure:
	skb_trim(skb, b - skb->data);
	return -1;
}

Project: linux-2.6

cbq_destroy(struct Qdisc* sch)
{
	struct cbq_sched_data *q = qdisc_priv(sch);
	struct cbq_class *cl;
	unsigned h;

#ifdef CONFIG_NET_CLS_POLICE
	q->rx_class = NULL;
#endif
	/*
	 * Filters must be destroyed first because we don't destroy the
	 * classes from root to leafs which means that filters can still
	 * be bound to classes which have been destroyed already. --TGR '04
	 */
	for (h = 0; h < 16; h++)
		for (cl = q->classes[h]; cl; cl = cl->next)
			cbq_destroy_filters(cl);

	for (h = 0; h < 16; h++) {
		struct cbq_class *next;

		for (cl = q->classes[h]; cl; cl = next) {
			next = cl->next;
			cbq_destroy_class(sch, cl);
		}
	}
}

Project: linux-2.6

static void addrconf_add_lroute(struct net_device *dev)
{
	struct in6_addr addr;

	ipv6_addr_set(&addr,  htonl(0xFE800000), 0, 0, 0);
	addrconf_prefix_route(&addr, 64, dev, 0, 0);
}

Project: linux-2.6

static void addrconf_mod_timer(struct inet6_ifaddr *ifp,
			       enum addrconf_timer_t what,
			       unsigned long when)
{
	if (!del_timer(&ifp->timer))
		in6_ifa_hold(ifp);

	switch (what) {
	case AC_DAD:
		ifp->timer.function = addrconf_dad_timer;
		break;
	case AC_RS:
		ifp->timer.function = addrconf_rs_timer;
		break;
	default:;
	}
	ifp->timer.expires = jiffies + when;
	add_timer(&ifp->timer);
}

Project: linux-2.6

static unsigned int cbq_drop(struct Qdisc* sch)
{
	struct cbq_sched_data *q = qdisc_priv(sch);
	struct cbq_class *cl, *cl_head;
	int prio;
	unsigned int len;

	for (prio = TC_CBQ_MAXPRIO; prio >= 0; prio--) {
		if ((cl_head = q->active[prio]) == NULL)
			continue;

		cl = cl_head;
		do {
			if (cl->q->ops->drop && (len = cl->q->ops->drop(cl->q))) {
				sch->q.qlen--;
				return len;
			}
		} while ((cl = cl->next_alive) != cl_head);
	}
	return 0;
}

Project: linux-2.6

static int inet6_addr_del(int ifindex, struct in6_addr *pfx, int plen)
{
	struct inet6_ifaddr *ifp;
	struct inet6_dev *idev;
	struct net_device *dev;
	
	if ((dev = __dev_get_by_index(ifindex)) == NULL)
		return -ENODEV;

	if ((idev = __in6_dev_get(dev)) == NULL)
		return -ENXIO;

	read_lock_bh(&idev->lock);
	for (ifp = idev->addr_list; ifp; ifp=ifp->if_next) {
		if (ifp->prefix_len == plen &&
		    ipv6_addr_equal(pfx, &ifp->addr)) {
			in6_ifa_hold(ifp);
			read_unlock_bh(&idev->lock);
			
			ipv6_del_addr(ifp);

			/* If the last address is deleted administratively,
			   disable IPv6 on this interface.
			 */
			if (idev->addr_list == NULL)
				addrconf_ifdown(idev->dev, 1);
			return 0;
		}
	}
	read_unlock_bh(&idev->lock);
	return -EADDRNOTAVAIL;
}

Project: linux-2.6

cbq_under_limit(struct cbq_class *cl)
{
	struct cbq_sched_data *q = qdisc_priv(cl->qdisc);
	struct cbq_class *this_cl = cl;

	if (cl->tparent == NULL)
		return cl;

	if (PSCHED_IS_PASTPERFECT(cl->undertime) ||
	    !PSCHED_TLESS(q->now, cl->undertime)) {
		cl->delayed = 0;
		return cl;
	}

	do {
		/* It is very suspicious place. Now overlimit
		   action is generated for not bounded classes
		   only if link is completely congested.
		   Though it is in agree with ancestor-only paradigm,
		   it looks very stupid. Particularly,
		   it means that this chunk of code will either
		   never be called or result in strong amplification
		   of burstiness. Dangerous, silly, and, however,
		   no another solution exists.
		 */
		if ((cl = cl->borrow) == NULL) {
			this_cl->qstats.overlimits++;
			this_cl->overlimit(this_cl);
			return NULL;
		}
		if (cl->level > q->toplevel)
			return NULL;
	} while (!PSCHED_IS_PASTPERFECT(cl->undertime) &&
		 PSCHED_TLESS(q->now, cl->undertime));

	cl->delayed = 0;
	return cl;
}

Project: linux-2.6

cbq_update(struct cbq_sched_data *q)
{
	struct cbq_class *this = q->tx_class;
	struct cbq_class *cl = this;
	int len = q->tx_len;

	q->tx_class = NULL;

	for ( ; cl; cl = cl->share) {
		long avgidle = cl->avgidle;
		long idle;

		cl->bstats.packets++;
		cl->bstats.bytes += len;

		/*
		   (now - last) is total time between packet right edges.
		   (last_pktlen/rate) is "virtual" busy time, so that

		         idle = (now - last) - last_pktlen/rate
		 */

		idle = PSCHED_TDIFF(q->now, cl->last);
		if ((unsigned long)idle > 128*1024*1024) {
			avgidle = cl->maxidle;
		} else {
			idle -= L2T(cl, len);

		/* true_avgidle := (1-W)*true_avgidle + W*idle,
		   where W=2^{-ewma_log}. But cl->avgidle is scaled:
		   cl->avgidle == true_avgidle/W,
		   hence:
		 */
			avgidle += idle - (avgidle>>cl->ewma_log);
		}

		if (avgidle <= 0) {
			/* Overlimit or at-limit */

			if (avgidle < cl->minidle)
				avgidle = cl->minidle;

			cl->avgidle = avgidle;

			/* Calculate expected time, when this class
			   will be allowed to send.
			   It will occur, when:
			   (1-W)*true_avgidle + W*delay = 0, i.e.
			   idle = (1/W - 1)*(-true_avgidle)
			   or
			   idle = (1 - W)*(-cl->avgidle);
			 */
			idle = (-avgidle) - ((-avgidle) >> cl->ewma_log);

			/*
			   That is not all.
			   To maintain the rate allocated to the class,
			   we add to undertime virtual clock,
			   necessary to complete transmitted packet.
			   (len/phys_bandwidth has been already passed
			   to the moment of cbq_update)
			 */

			idle -= L2T(&q->link, len);
			idle += L2T(cl, len);

			PSCHED_AUDIT_TDIFF(idle);

			PSCHED_TADD2(q->now, idle, cl->undertime);
		} else {
			/* Underlimit */

			PSCHED_SET_PASTPERFECT(cl->undertime);
			if (avgidle > cl->maxidle)
				cl->avgidle = cl->maxidle;
			else
				cl->avgidle = avgidle;
		}
		cl->last = q->now;
	}

	cbq_update_toplevel(q, this, q->tx_borrowed);
}

Project: linux-2.6

static void cbq_ovl_classic(struct cbq_class *cl)
{
	struct cbq_sched_data *q = qdisc_priv(cl->qdisc);
	psched_tdiff_t delay = PSCHED_TDIFF(cl->undertime, q->now);

	if (!cl->delayed) {
		delay += cl->offtime;

		/* 
		   Class goes to sleep, so that it will have no
		   chance to work avgidle. Let's forgive it 8)

		   BTW cbq-2.0 has a crap in this
		   place, apparently they forgot to shift it by cl->ewma_log.
		 */
		if (cl->avgidle < 0)
			delay -= (-cl->avgidle) - ((-cl->avgidle) >> cl->ewma_log);
		if (cl->avgidle < cl->minidle)
			cl->avgidle = cl->minidle;
		if (delay <= 0)
			delay = 1;
		PSCHED_TADD2(q->now, delay, cl->undertime);

		cl->xstats.overactions++;
		cl->delayed = 1;
	}
	if (q->wd_expires == 0 || q->wd_expires > delay)
		q->wd_expires = delay;

	/* Dirty work! We must schedule wakeups based on
	   real available rate, rather than leaf rate,
	   which may be tiny (even zero).
	 */
	if (q->toplevel == TC_CBQ_MAXLEVEL) {
		struct cbq_class *b;
		psched_tdiff_t base_delay = q->wd_expires;

		for (b = cl->borrow; b; b = b->borrow) {
			delay = PSCHED_TDIFF(b->undertime, q->now);
			if (delay < base_delay) {
				if (delay <= 0)
					delay = 1;
				base_delay = delay;
			}
		}

		q->wd_expires = base_delay;
	}
}

Project: linux-2.6

cbq_dequeue_1(struct Qdisc *sch)
{
	struct cbq_sched_data *q = qdisc_priv(sch);
	struct sk_buff *skb;
	unsigned activemask;

	activemask = q->activemask&0xFF;
	while (activemask) {
		int prio = ffz(~activemask);
		activemask &= ~(1<<prio);
		skb = cbq_dequeue_prio(sch, prio);
		if (skb)
			return skb;
	}
	return NULL;
}

Project: linux-2.6

void addrconf_join_anycast(struct inet6_ifaddr *ifp)
{
	struct in6_addr addr;
	ipv6_addr_prefix(&addr, &ifp->addr, ifp->prefix_len);
	if (ipv6_addr_any(&addr))
		return;
	ipv6_dev_ac_inc(ifp->idev->dev, &addr);
}

Project: linux-2.6

static void *if6_seq_start(struct seq_file *seq, loff_t *pos)
{
	read_lock_bh(&addrconf_hash_lock);
	return if6_get_idx(seq, *pos);
}

Project: linux-2.6

static void addrconf_sit_config(struct net_device *dev)
{
	struct inet6_dev *idev;

	ASSERT_RTNL();

	/* 
	 * Configure the tunnel with one of our IPv4 
	 * addresses... we should configure all of 
	 * our v4 addrs in the tunnel
	 */

	if ((idev = ipv6_find_idev(dev)) == NULL) {
		printk(KERN_DEBUG "init sit: add_dev failed\n");
		return;
	}

	sit_add_v4_addrs(idev);

	if (dev->flags&IFF_POINTOPOINT) {
		addrconf_add_mroute(dev);
		addrconf_add_lroute(dev);
	} else
		sit_route_add(dev);
}

Project: linux-2.6

static int if6_seq_show(struct seq_file *seq, void *v)
{
	struct inet6_ifaddr *ifp = (struct inet6_ifaddr *)v;
	seq_printf(seq,
		   "%04x%04x%04x%04x%04x%04x%04x%04x %02x %02x %02x %02x %8s\n",
		   NIP6(ifp->addr),
		   ifp->idev->dev->ifindex,
		   ifp->prefix_len,
		   ifp->scope,
		   ifp->flags,
		   ifp->idev->dev->name);
	return 0;
}

Project: linux-2.6

static struct inet6_dev * ipv6_add_dev(struct net_device *dev)
{
	struct inet6_dev *ndev;

	ASSERT_RTNL();

	if (dev->mtu < IPV6_MIN_MTU)
		return NULL;

	ndev = kmalloc(sizeof(struct inet6_dev), GFP_KERNEL);

	if (ndev) {
		memset(ndev, 0, sizeof(struct inet6_dev));

		rwlock_init(&ndev->lock);
		ndev->dev = dev;
		memcpy(&ndev->cnf, &ipv6_devconf_dflt, sizeof(ndev->cnf));
		ndev->cnf.mtu6 = dev->mtu;
		ndev->cnf.sysctl = NULL;
		ndev->nd_parms = neigh_parms_alloc(dev, &nd_tbl);
		if (ndev->nd_parms == NULL) {
			kfree(ndev);
			return NULL;
		}
		/* We refer to the device */
		dev_hold(dev);

		if (snmp6_alloc_dev(ndev) < 0) {
			ADBG((KERN_WARNING
				"%s(): cannot allocate memory for statistics; dev=%s.\n",
				__FUNCTION__, dev->name));
			neigh_parms_release(&nd_tbl, ndev->nd_parms);
			ndev->dead = 1;
			in6_dev_finish_destroy(ndev);
			return NULL;
		}

		if (snmp6_register_dev(ndev) < 0) {
			ADBG((KERN_WARNING
				"%s(): cannot create /proc/net/dev_snmp6/%s\n",
				__FUNCTION__, dev->name));
			neigh_parms_release(&nd_tbl, ndev->nd_parms);
			ndev->dead = 1;
			in6_dev_finish_destroy(ndev);
			return NULL;
		}

		/* One reference from device.  We must do this before
		 * we invoke __ipv6_regen_rndid().
		 */
		in6_dev_hold(ndev);

#ifdef CONFIG_IPV6_PRIVACY
		get_random_bytes(ndev->rndid, sizeof(ndev->rndid));
		get_random_bytes(ndev->entropy, sizeof(ndev->entropy));
		init_timer(&ndev->regen_timer);
		ndev->regen_timer.function = ipv6_regen_rndid;
		ndev->regen_timer.data = (unsigned long) ndev;
		if ((dev->flags&IFF_LOOPBACK) ||
		    dev->type == ARPHRD_TUNNEL ||
		    dev->type == ARPHRD_NONE ||
		    dev->type == ARPHRD_SIT) {
			printk(KERN_INFO
				"Disabled Privacy Extensions on device %p(%s)\n",
				dev, dev->name);
			ndev->cnf.use_tempaddr = -1;
		} else {
			in6_dev_hold(ndev);
			ipv6_regen_rndid((unsigned long) ndev);
		}
#endif

		write_lock_bh(&addrconf_lock);
		dev->ip6_ptr = ndev;
		write_unlock_bh(&addrconf_lock);

		ipv6_mc_init_dev(ndev);
		ndev->tstamp = jiffies;
#ifdef CONFIG_SYSCTL
		neigh_sysctl_register(dev, ndev->nd_parms, NET_IPV6, 
				      NET_IPV6_NEIGH, "ipv6",
				      &ndisc_ifinfo_sysctl_change,
				      NULL);
		addrconf_sysctl_register(ndev, &ndev->cnf);
#endif
	}
	return ndev;
}

Project: linux-2.6

struct inet6_ifaddr * ipv6_get_ifaddr(struct in6_addr *addr, struct net_device *dev, int strict)
{
	struct inet6_ifaddr * ifp;
	u8 hash = ipv6_addr_hash(addr);

	read_lock_bh(&addrconf_hash_lock);
	for(ifp = inet6_addr_lst[hash]; ifp; ifp=ifp->lst_next) {
		if (ipv6_addr_equal(&ifp->addr, addr)) {
			if (dev == NULL || ifp->idev->dev == dev ||
			    !(ifp->scope&(IFA_LINK|IFA_HOST) || strict)) {
				in6_ifa_hold(ifp);
				break;
			}
		}
	}
	read_unlock_bh(&addrconf_hash_lock);

	return ifp;
}

Project: linux-2.6

static int inet6_fill_ifinfo(struct sk_buff *skb, struct inet6_dev *idev, 
			     u32 pid, u32 seq, int event, unsigned int flags)
{
	struct net_device	*dev = idev->dev;
	__s32			*array = NULL;
	struct ifinfomsg	*r;
	struct nlmsghdr 	*nlh;
	unsigned char		*b = skb->tail;
	struct rtattr		*subattr;
	__u32			mtu = dev->mtu;
	struct ifla_cacheinfo	ci;

	nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*r), flags);
	r = NLMSG_DATA(nlh);
	r->ifi_family = AF_INET6;
	r->__ifi_pad = 0;
	r->ifi_type = dev->type;
	r->ifi_index = dev->ifindex;
	r->ifi_flags = dev_get_flags(dev);
	r->ifi_change = 0;

	RTA_PUT(skb, IFLA_IFNAME, strlen(dev->name)+1, dev->name);

	if (dev->addr_len)
		RTA_PUT(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr);

	RTA_PUT(skb, IFLA_MTU, sizeof(mtu), &mtu);
	if (dev->ifindex != dev->iflink)
		RTA_PUT(skb, IFLA_LINK, sizeof(int), &dev->iflink);
			
	subattr = (struct rtattr*)skb->tail;

	RTA_PUT(skb, IFLA_PROTINFO, 0, NULL);

	/* return the device flags */
	RTA_PUT(skb, IFLA_INET6_FLAGS, sizeof(__u32), &idev->if_flags);

	/* return interface cacheinfo */
	ci.max_reasm_len = IPV6_MAXPLEN;
	ci.tstamp = (__u32)(TIME_DELTA(idev->tstamp, INITIAL_JIFFIES) / HZ * 100
		    + TIME_DELTA(idev->tstamp, INITIAL_JIFFIES) % HZ * 100 / HZ);
	ci.reachable_time = idev->nd_parms->reachable_time;
	ci.retrans_time = idev->nd_parms->retrans_time;
	RTA_PUT(skb, IFLA_INET6_CACHEINFO, sizeof(ci), &ci);
	
	/* return the device sysctl params */
	if ((array = kmalloc(DEVCONF_MAX * sizeof(*array), GFP_ATOMIC)) == NULL)
		goto rtattr_failure;
	ipv6_store_devconf(&idev->cnf, array, DEVCONF_MAX * sizeof(*array));
	RTA_PUT(skb, IFLA_INET6_CONF, DEVCONF_MAX * sizeof(*array), array);

	/* XXX - Statistics/MC not implemented */
	subattr->rta_len = skb->tail - (u8*)subattr;

	nlh->nlmsg_len = skb->tail - b;
	kfree(array);
	return skb->len;

nlmsg_failure:
rtattr_failure:
	if (array)
		kfree(array);
	skb_trim(skb, b - skb->data);
	return -1;
}

Project: linux-2.6

int __init addrconf_init(void)
{
	int err = 0;

	/* The addrconf netdev notifier requires that loopback_dev
	 * has it's ipv6 private information allocated and setup
	 * before it can bring up and give link-local addresses
	 * to other devices which are up.
	 *
	 * Unfortunately, loopback_dev is not necessarily the first
	 * entry in the global dev_base list of net devices.  In fact,
	 * it is likely to be the very last entry on that list.
	 * So this causes the notifier registry below to try and
	 * give link-local addresses to all devices besides loopback_dev
	 * first, then loopback_dev, which cases all the non-loopback_dev
	 * devices to fail to get a link-local address.
	 *
	 * So, as a temporary fix, allocate the ipv6 structure for
	 * loopback_dev first by hand.
	 * Longer term, all of the dependencies ipv6 has upon the loopback
	 * device and it being up should be removed.
	 */
	rtnl_lock();
	if (!ipv6_add_dev(&loopback_dev))
		err = -ENOMEM;
	rtnl_unlock();
	if (err)
		return err;

	register_netdevice_notifier(&ipv6_dev_notf);

#ifdef CONFIG_IPV6_PRIVACY
	md5_tfm = crypto_alloc_tfm("md5", 0);
	if (unlikely(md5_tfm == NULL))
		printk(KERN_WARNING
			"failed to load transform for md5\n");
#endif

	addrconf_verify(0);
	rtnetlink_links[PF_INET6] = inet6_rtnetlink_table;
#ifdef CONFIG_SYSCTL
	addrconf_sysctl.sysctl_header =
		register_sysctl_table(addrconf_sysctl.addrconf_root_dir, 0);
	addrconf_sysctl_register(NULL, &ipv6_devconf_dflt);
#endif

	return 0;
}

Project: linux-2.6

cbq_leaf(struct Qdisc *sch, unsigned long arg)
{
	struct cbq_class *cl = (struct cbq_class*)arg;

	return cl ? cl->q : NULL;
}

Project: linux-2.6

cbq_classify(struct sk_buff *skb, struct Qdisc *sch, int *qerr)
{
	struct cbq_sched_data *q = qdisc_priv(sch);
	struct cbq_class *head = &q->link;
	struct cbq_class **defmap;
	struct cbq_class *cl = NULL;
	u32 prio = skb->priority;
	struct tcf_result res;

	/*
	 *  Step 1. If skb->priority points to one of our classes, use it.
	 */
	if (TC_H_MAJ(prio^sch->handle) == 0 &&
	    (cl = cbq_class_lookup(q, prio)) != NULL)
		return cl;

	*qerr = NET_XMIT_DROP;
	for (;;) {
		int result = 0;
		defmap = head->defaults;

		/*
		 * Step 2+n. Apply classifier.
		 */
		if (!head->filter_list || (result = tc_classify(skb, head->filter_list, &res)) < 0)
			goto fallback;

		if ((cl = (void*)res.class) == NULL) {
			if (TC_H_MAJ(res.classid))
				cl = cbq_class_lookup(q, res.classid);
			else if ((cl = defmap[res.classid&TC_PRIO_MAX]) == NULL)
				cl = defmap[TC_PRIO_BESTEFFORT];

			if (cl == NULL || cl->level >= head->level)
				goto fallback;
		}

#ifdef CONFIG_NET_CLS_ACT
		switch (result) {
		case TC_ACT_QUEUED:
		case TC_ACT_STOLEN: 
			*qerr = NET_XMIT_SUCCESS;
		case TC_ACT_SHOT:
			return NULL;
		}
#elif defined(CONFIG_NET_CLS_POLICE)
		switch (result) {
		case TC_POLICE_RECLASSIFY:
			return cbq_reclassify(skb, cl);
		case TC_POLICE_SHOT:
			return NULL;
		default:
			break;
		}
#endif
		if (cl->level == 0)
			return cl;

		/*
		 * Step 3+n. If classifier selected a link sharing class,
		 *	   apply agency specific classifier.
		 *	   Repeat this procdure until we hit a leaf node.
		 */
		head = cl;
	}

fallback:
	cl = head;

	/*
	 * Step 4. No success...
	 */
	if (TC_H_MAJ(prio) == 0 &&
	    !(cl = head->defaults[prio&TC_PRIO_MAX]) &&
	    !(cl = head->defaults[TC_PRIO_BESTEFFORT]))
		return head;

	return cl;
}

Project: linux-2.6

static int cbq_set_fopt(struct cbq_class *cl, struct tc_cbq_fopt *fopt)
{
	cbq_change_defmap(cl, fopt->split, fopt->defmap, fopt->defchange);
	return 0;
}

Project: linux-2.6

int ipv6_chk_addr(struct in6_addr *addr, struct net_device *dev, int strict)
{
	struct inet6_ifaddr * ifp;
	u8 hash = ipv6_addr_hash(addr);

	read_lock_bh(&addrconf_hash_lock);
	for(ifp = inet6_addr_lst[hash]; ifp; ifp=ifp->lst_next) {
		if (ipv6_addr_equal(&ifp->addr, addr) &&
		    !(ifp->flags&IFA_F_TENTATIVE)) {
			if (dev == NULL || ifp->idev->dev == dev ||
			    !(ifp->scope&(IFA_LINK|IFA_HOST) || strict))
				break;
		}
	}
	read_unlock_bh(&addrconf_hash_lock);
	return ifp != NULL;
}

Project: linux-2.6

void inet6_ifinfo_notify(int event, struct inet6_dev *idev)
{
	struct sk_buff *skb;
	/* 128 bytes ?? */
	int size = NLMSG_SPACE(sizeof(struct ifinfomsg)+128);
	
	skb = alloc_skb(size, GFP_ATOMIC);
	if (!skb) {
		netlink_set_err(rtnl, 0, RTMGRP_IPV6_IFINFO, ENOBUFS);
		return;
	}
	if (inet6_fill_ifinfo(skb, idev, current->pid, 0, event, 0) < 0) {
		kfree_skb(skb);
		netlink_set_err(rtnl, 0, RTMGRP_IPV6_IFINFO, EINVAL);
		return;
	}
	NETLINK_CB(skb).dst_groups = RTMGRP_IPV6_IFINFO;
	netlink_broadcast(rtnl, skb, 0, RTMGRP_IPV6_IFINFO, GFP_ATOMIC);
}

Project: linux-2.6

void addrconf_dad_failure(struct inet6_ifaddr *ifp)
{
	if (net_ratelimit())
		printk(KERN_INFO "%s: duplicate address detected!\n", ifp->idev->dev->name);
	if (ifp->flags&IFA_F_PERMANENT) {
		spin_lock_bh(&ifp->lock);
		addrconf_del_timer(ifp);
		ifp->flags |= IFA_F_TENTATIVE;
		spin_unlock_bh(&ifp->lock);
		in6_ifa_put(ifp);
#ifdef CONFIG_IPV6_PRIVACY
	} else if (ifp->flags&IFA_F_TEMPORARY) {
		struct inet6_ifaddr *ifpub;
		spin_lock_bh(&ifp->lock);
		ifpub = ifp->ifpub;
		if (ifpub) {
			in6_ifa_hold(ifpub);
			spin_unlock_bh(&ifp->lock);
			ipv6_create_tempaddr(ifpub, ifp);
			in6_ifa_put(ifpub);
		} else {
			spin_unlock_bh(&ifp->lock);
		}
		ipv6_del_addr(ifp);
#endif
	} else
		ipv6_del_addr(ifp);
}

Project: linux-2.6

static void tunnel_recycle(struct rsvp_head *data)
{
	struct rsvp_session **sht = data->ht;
	u32 tmap[256/32];
	int h1, h2;

	memset(tmap, 0, sizeof(tmap));

	for (h1=0; h1<256; h1++) {
		struct rsvp_session *s;
		for (s = sht[h1]; s; s = s->next) {
			for (h2=0; h2<=16; h2++) {
				struct rsvp_filter *f;

				for (f = s->ht[h2]; f; f = f->next) {
					if (f->tunnelhdr == 0)
						continue;
					data->tgenerator = f->res.classid;
					tunnel_bts(data);
				}
			}
		}
	}

	memcpy(data->tmap, tmap, sizeof(tmap));
}

Project: linux-2.6

cbq_dump_class(struct Qdisc *sch, unsigned long arg,
	       struct sk_buff *skb, struct tcmsg *tcm)
{
	struct cbq_class *cl = (struct cbq_class*)arg;
	unsigned char	 *b = skb->tail;
	struct rtattr *rta;

	if (cl->tparent)
		tcm->tcm_parent = cl->tparent->classid;
	else
		tcm->tcm_parent = TC_H_ROOT;
	tcm->tcm_handle = cl->classid;
	tcm->tcm_info = cl->q->handle;

	rta = (struct rtattr*)b;
	RTA_PUT(skb, TCA_OPTIONS, 0, NULL);
	if (cbq_dump_attr(skb, cl) < 0)
		goto rtattr_failure;
	rta->rta_len = skb->tail - b;
	return skb->len;

rtattr_failure:
	skb_trim(skb, b - skb->data);
	return -1;
}

Project: linux-2.6

static void cbq_destroy_class(struct Qdisc *sch, struct cbq_class *cl)
{
	struct cbq_sched_data *q = qdisc_priv(sch);

	BUG_TRAP(!cl->filters);

	cbq_destroy_filters(cl);
	qdisc_destroy(cl->q);
	qdisc_put_rtab(cl->R_tab);
#ifdef CONFIG_NET_ESTIMATOR
	gen_kill_estimator(&cl->bstats, &cl->rate_est);
#endif
	if (cl != &q->link)
		kfree(cl);
}

Project: linux-2.6

inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
{
	struct rtattr **rta = arg;
	struct ifaddrmsg *ifm = NLMSG_DATA(nlh);
	struct in6_addr *pfx;

	pfx = NULL;
	if (rta[IFA_ADDRESS-1]) {
		if (RTA_PAYLOAD(rta[IFA_ADDRESS-1]) < sizeof(*pfx))
			return -EINVAL;
		pfx = RTA_DATA(rta[IFA_ADDRESS-1]);
	}
	if (rta[IFA_LOCAL-1]) {
		if (pfx && memcmp(pfx, RTA_DATA(rta[IFA_LOCAL-1]), sizeof(*pfx)))
			return -EINVAL;
		pfx = RTA_DATA(rta[IFA_LOCAL-1]);
	}
	if (pfx == NULL)
		return -EINVAL;

	return inet6_addr_del(ifm->ifa_index, pfx, ifm->ifa_prefixlen);
}

Project: linux-2.6

static int cbq_dump_attr(struct sk_buff *skb, struct cbq_class *cl)
{
	if (cbq_dump_lss(skb, cl) < 0 ||
	    cbq_dump_rate(skb, cl) < 0 ||
	    cbq_dump_wrr(skb, cl) < 0 ||
	    cbq_dump_ovl(skb, cl) < 0 ||
#ifdef CONFIG_NET_CLS_POLICE
	    cbq_dump_police(skb, cl) < 0 ||
#endif
	    cbq_dump_fopt(skb, cl) < 0)
		return -1;
	return 0;
}

Project: linux-2.6

static void rsvp_destroy(struct tcf_proto *tp)
{
	struct rsvp_head *data = xchg(&tp->root, NULL);
	struct rsvp_session **sht;
	int h1, h2;

	if (data == NULL)
		return;

	sht = data->ht;

	for (h1=0; h1<256; h1++) {
		struct rsvp_session *s;

		while ((s = sht[h1]) != NULL) {
			sht[h1] = s->next;

			for (h2=0; h2<=16; h2++) {
				struct rsvp_filter *f;

				while ((f = s->ht[h2]) != NULL) {
					s->ht[h2] = f->next;
					rsvp_delete_filter(tp, f);
				}
			}
			kfree(s);
		}
	}
	kfree(data);
}

Project: linux-2.6

static void ipv6_regen_rndid(unsigned long data)
{
	struct inet6_dev *idev = (struct inet6_dev *) data;
	unsigned long expires;

	read_lock_bh(&addrconf_lock);
	write_lock_bh(&idev->lock);

	if (idev->dead)
		goto out;

	if (__ipv6_regen_rndid(idev) < 0)
		goto out;
	
	expires = jiffies +
		idev->cnf.temp_prefered_lft * HZ - 
		idev->cnf.regen_max_retry * idev->cnf.dad_transmits * idev->nd_parms->retrans_time - desync_factor;
	if (time_before(expires, jiffies)) {
		printk(KERN_WARNING
			"ipv6_regen_rndid(): too short regeneration interval; timer disabled for %s.\n",
			idev->dev->name);
		goto out;
	}

	if (!mod_timer(&idev->regen_timer, expires))
		in6_dev_hold(idev);

out:
	write_unlock_bh(&idev->lock);
	read_unlock_bh(&addrconf_lock);
	in6_dev_put(idev);
}

Project: linux-2.6

static void inet6_prefix_notify(int event, struct inet6_dev *idev, 
			 struct prefix_info *pinfo)
{
	struct sk_buff *skb;
	int size = NLMSG_SPACE(sizeof(struct prefixmsg)+128);

	skb = alloc_skb(size, GFP_ATOMIC);
	if (!skb) {
		netlink_set_err(rtnl, 0, RTMGRP_IPV6_PREFIX, ENOBUFS);
		return;
	}
	if (inet6_fill_prefix(skb, idev, pinfo, current->pid, 0, event, 0) < 0) {
		kfree_skb(skb);
		netlink_set_err(rtnl, 0, RTMGRP_IPV6_PREFIX, EINVAL);
		return;
	}
	NETLINK_CB(skb).dst_groups = RTMGRP_IPV6_PREFIX;
	netlink_broadcast(rtnl, skb, 0, RTMGRP_IPV6_PREFIX, GFP_ATOMIC);
}

Project: linux-2.6

static int cbq_init(struct Qdisc *sch, struct rtattr *opt)
{
	struct cbq_sched_data *q = qdisc_priv(sch);
	struct rtattr *tb[TCA_CBQ_MAX];
	struct tc_ratespec *r;

	if (rtattr_parse_nested(tb, TCA_CBQ_MAX, opt) < 0 ||
	    tb[TCA_CBQ_RTAB-1] == NULL || tb[TCA_CBQ_RATE-1] == NULL ||
	    RTA_PAYLOAD(tb[TCA_CBQ_RATE-1]) < sizeof(struct tc_ratespec))
		return -EINVAL;

	if (tb[TCA_CBQ_LSSOPT-1] &&
	    RTA_PAYLOAD(tb[TCA_CBQ_LSSOPT-1]) < sizeof(struct tc_cbq_lssopt))
		return -EINVAL;

	r = RTA_DATA(tb[TCA_CBQ_RATE-1]);

	if ((q->link.R_tab = qdisc_get_rtab(r, tb[TCA_CBQ_RTAB-1])) == NULL)
		return -EINVAL;

	q->link.refcnt = 1;
	q->link.sibling = &q->link;
	q->link.classid = sch->handle;
	q->link.qdisc = sch;
	if (!(q->link.q = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops)))
		q->link.q = &noop_qdisc;

	q->link.priority = TC_CBQ_MAXPRIO-1;
	q->link.priority2 = TC_CBQ_MAXPRIO-1;
	q->link.cpriority = TC_CBQ_MAXPRIO-1;
	q->link.ovl_strategy = TC_CBQ_OVL_CLASSIC;
	q->link.overlimit = cbq_ovl_classic;
	q->link.allot = psched_mtu(sch->dev);
	q->link.quantum = q->link.allot;
	q->link.weight = q->link.R_tab->rate.rate;

	q->link.ewma_log = TC_CBQ_DEF_EWMA;
	q->link.avpkt = q->link.allot/2;
	q->link.minidle = -0x7FFFFFFF;
	q->link.stats_lock = &sch->dev->queue_lock;

	init_timer(&q->wd_timer);
	q->wd_timer.data = (unsigned long)sch;
	q->wd_timer.function = cbq_watchdog;
	init_timer(&q->delay_timer);
	q->delay_timer.data = (unsigned long)sch;
	q->delay_timer.function = cbq_undelay;
	q->toplevel = TC_CBQ_MAXLEVEL;
	PSCHED_GET_TIME(q->now);
	q->now_rt = q->now;

	cbq_link_class(&q->link);

	if (tb[TCA_CBQ_LSSOPT-1])
		cbq_set_lss(&q->link, RTA_DATA(tb[TCA_CBQ_LSSOPT-1]));

	cbq_addprio(q, &q->link);
	return 0;
}

Project: linux-2.6

int ipv6_addr_type(const struct in6_addr *addr)
{
	int type;
	u32 st;

	st = addr->s6_addr32[0];

	if ((st & htonl(0xFF000000)) == htonl(0xFF000000)) {
		type = IPV6_ADDR_MULTICAST;

		switch((st & htonl(0x00FF0000))) {
			case __constant_htonl(0x00010000):
				type |= IPV6_ADDR_LOOPBACK;
				break;

			case __constant_htonl(0x00020000):
				type |= IPV6_ADDR_LINKLOCAL;
				break;

			case __constant_htonl(0x00050000):
				type |= IPV6_ADDR_SITELOCAL;
				break;
		};
		return type;
	}

	type = IPV6_ADDR_UNICAST;

	/* Consider all addresses with the first three bits different of
	   000 and 111 as finished.
	 */
	if ((st & htonl(0xE0000000)) != htonl(0x00000000) &&
	    (st & htonl(0xE0000000)) != htonl(0xE0000000))
		return type;
	
	if ((st & htonl(0xFFC00000)) == htonl(0xFE800000))
		return (IPV6_ADDR_LINKLOCAL | type);

	if ((st & htonl(0xFFC00000)) == htonl(0xFEC00000))
		return (IPV6_ADDR_SITELOCAL | type);

	if ((addr->s6_addr32[0] | addr->s6_addr32[1]) == 0) {
		if (addr->s6_addr32[2] == 0) {
			if (addr->s6_addr32[3] == 0)
				return IPV6_ADDR_ANY;

			if (addr->s6_addr32[3] == htonl(0x00000001))
				return (IPV6_ADDR_LOOPBACK | type);

			return (IPV6_ADDR_COMPATv4 | type);
		}

		if (addr->s6_addr32[2] == htonl(0x0000ffff))
			return IPV6_ADDR_MAPPED;
	}

	st &= htonl(0xFF000000);
	if (st == 0)
		return IPV6_ADDR_RESERVED;
	st &= htonl(0xFE000000);
	if (st == htonl(0x02000000))
		return IPV6_ADDR_RESERVED;	/* for NSAP */
	if (st == htonl(0x04000000))
		return IPV6_ADDR_RESERVED;	/* for IPX */
	return type;
}

Project: linux-2.6

int addrconf_set_dstaddr(void __user *arg)
{
	struct in6_ifreq ireq;
	struct net_device *dev;
	int err = -EINVAL;

	rtnl_lock();

	err = -EFAULT;
	if (copy_from_user(&ireq, arg, sizeof(struct in6_ifreq)))
		goto err_exit;

	dev = __dev_get_by_index(ireq.ifr6_ifindex);

	err = -ENODEV;
	if (dev == NULL)
		goto err_exit;

	if (dev->type == ARPHRD_SIT) {
		struct ifreq ifr;
		mm_segment_t	oldfs;
		struct ip_tunnel_parm p;

		err = -EADDRNOTAVAIL;
		if (!(ipv6_addr_type(&ireq.ifr6_addr) & IPV6_ADDR_COMPATv4))
			goto err_exit;

		memset(&p, 0, sizeof(p));
		p.iph.daddr = ireq.ifr6_addr.s6_addr32[3];
		p.iph.saddr = 0;
		p.iph.version = 4;
		p.iph.ihl = 5;
		p.iph.protocol = IPPROTO_IPV6;
		p.iph.ttl = 64;
		ifr.ifr_ifru.ifru_data = (void __user *)&p;

		oldfs = get_fs(); set_fs(KERNEL_DS);
		err = dev->do_ioctl(dev, &ifr, SIOCADDTUNNEL);
		set_fs(oldfs);

		if (err == 0) {
			err = -ENOBUFS;
			if ((dev = __dev_get_by_name(p.name)) == NULL)
				goto err_exit;
			err = dev_open(dev);
		}
	}

err_exit:
	rtnl_unlock();
	return err;
}

Project: linux-2.6

static void init_loopback(struct net_device *dev)
{
	struct inet6_dev  *idev;
	struct inet6_ifaddr * ifp;

	/* ::1 */

	ASSERT_RTNL();

	if ((idev = ipv6_find_idev(dev)) == NULL) {
		printk(KERN_DEBUG "init loopback: add_dev failed\n");
		return;
	}

	ifp = ipv6_add_addr(idev, &in6addr_loopback, 128, IFA_HOST, IFA_F_PERMANENT);
	if (!IS_ERR(ifp)) {
		spin_lock_bh(&ifp->lock);
		ifp->flags &= ~IFA_F_TENTATIVE;
		spin_unlock_bh(&ifp->lock);
		ipv6_ifa_notify(RTM_NEWADDR, ifp);
		in6_ifa_put(ifp);
	}
}

Project: linux-2.6

static int __init init_rsvp(void)
{
	return register_tcf_proto_ops(&RSVP_OPS);
}

Project: linux-2.6

static unsigned long cbq_undelay_prio(struct cbq_sched_data *q, int prio)
{
	struct cbq_class *cl;
	struct cbq_class *cl_prev = q->active[prio];
	unsigned long now = jiffies;
	unsigned long sched = now;

	if (cl_prev == NULL)
		return now;

	do {
		cl = cl_prev->next_alive;
		if ((long)(now - cl->penalized) > 0) {
			cl_prev->next_alive = cl->next_alive;
			cl->next_alive = NULL;
			cl->cpriority = cl->priority;
			cl->delayed = 0;
			cbq_activate_class(cl);

			if (cl == q->active[prio]) {
				q->active[prio] = cl_prev;
				if (cl == q->active[prio]) {
					q->active[prio] = NULL;
					return 0;
				}
			}

			cl = cl_prev->next_alive;
		} else if ((long)(sched - cl->penalized) > 0)
			sched = cl->penalized;
	} while ((cl_prev = cl) != q->active[prio]);

	return (long)(sched - now);
}

Project: linux-2.6

static int cbq_dump(struct Qdisc *sch, struct sk_buff *skb)
{
	struct cbq_sched_data *q = qdisc_priv(sch);
	unsigned char	 *b = skb->tail;
	struct rtattr *rta;

	rta = (struct rtattr*)b;
	RTA_PUT(skb, TCA_OPTIONS, 0, NULL);
	if (cbq_dump_attr(skb, &q->link) < 0)
		goto rtattr_failure;
	rta->rta_len = skb->tail - b;
	return skb->len;

rtattr_failure:
	skb_trim(skb, b - skb->data);
	return -1;
}

Project: linux-2.6

static void cbq_ovl_delay(struct cbq_class *cl)
{
	struct cbq_sched_data *q = qdisc_priv(cl->qdisc);
	psched_tdiff_t delay = PSCHED_TDIFF(cl->undertime, q->now);

	if (!cl->delayed) {
		unsigned long sched = jiffies;

		delay += cl->offtime;
		if (cl->avgidle < 0)
			delay -= (-cl->avgidle) - ((-cl->avgidle) >> cl->ewma_log);
		if (cl->avgidle < cl->minidle)
			cl->avgidle = cl->minidle;
		PSCHED_TADD2(q->now, delay, cl->undertime);

		if (delay > 0) {
			sched += PSCHED_US2JIFFIE(delay) + cl->penalty;
			cl->penalized = sched;
			cl->cpriority = TC_CBQ_MAXPRIO;
			q->pmask |= (1<<TC_CBQ_MAXPRIO);
			if (del_timer(&q->delay_timer) &&
			    (long)(q->delay_timer.expires - sched) > 0)
				q->delay_timer.expires = sched;
			add_timer(&q->delay_timer);
			cl->delayed = 1;
			cl->xstats.overactions++;
			return;
		}
		delay = 1;
	}
	if (q->wd_expires == 0 || q->wd_expires > delay)
		q->wd_expires = delay;
}

Project: linux-2.6

static int rsvp_init(struct tcf_proto *tp)
{
	struct rsvp_head *data;

	data = kmalloc(sizeof(struct rsvp_head), GFP_KERNEL);
	if (data) {
		memset(data, 0, sizeof(struct rsvp_head));
		tp->root = data;
		return 0;
	}
	return -ENOBUFS;
}

Project: linux-2.6

cbq_dequeue(struct Qdisc *sch)
{
	struct sk_buff *skb;
	struct cbq_sched_data *q = qdisc_priv(sch);
	psched_time_t now;
	psched_tdiff_t incr;

	PSCHED_GET_TIME(now);
	incr = PSCHED_TDIFF(now, q->now_rt);

	if (q->tx_class) {
		psched_tdiff_t incr2;
		/* Time integrator. We calculate EOS time
		   by adding expected packet transmission time.
		   If real time is greater, we warp artificial clock,
		   so that:

		   cbq_time = max(real_time, work);
		 */
		incr2 = L2T(&q->link, q->tx_len);
		PSCHED_TADD(q->now, incr2);
		cbq_update(q);
		if ((incr -= incr2) < 0)
			incr = 0;
	}
	PSCHED_TADD(q->now, incr);
	q->now_rt = now;

	for (;;) {
		q->wd_expires = 0;

		skb = cbq_dequeue_1(sch);
		if (skb) {
			sch->q.qlen--;
			sch->flags &= ~TCQ_F_THROTTLED;
			return skb;
		}

		/* All the classes are overlimit.

		   It is possible, if:

		   1. Scheduler is empty.
		   2. Toplevel cutoff inhibited borrowing.
		   3. Root class is overlimit.

		   Reset 2d and 3d conditions and retry.

		   Note, that NS and cbq-2.0 are buggy, peeking
		   an arbitrary class is appropriate for ancestor-only
		   sharing, but not for toplevel algorithm.

		   Our version is better, but slower, because it requires
		   two passes, but it is unavoidable with top-level sharing.
		*/

		if (q->toplevel == TC_CBQ_MAXLEVEL &&
		    PSCHED_IS_PASTPERFECT(q->link.undertime))
			break;

		q->toplevel = TC_CBQ_MAXLEVEL;
		PSCHED_SET_PASTPERFECT(q->link.undertime);
	}

	/* No packets in scheduler or nobody wants to give them to us :-(
	   Sigh... start watchdog timer in the last case. */

	if (sch->q.qlen) {
		sch->qstats.overlimits++;
		if (q->wd_expires) {
			long delay = PSCHED_US2JIFFIE(q->wd_expires);
			if (delay <= 0)
				delay = 1;
			mod_timer(&q->wd_timer, jiffies + delay);
			sch->flags |= TCQ_F_THROTTLED;
		}
	}
	return NULL;
}

Project: linux-2.6

static void cbq_walk(struct Qdisc *sch, struct qdisc_walker *arg)
{
	struct cbq_sched_data *q = qdisc_priv(sch);
	unsigned h;

	if (arg->stop)
		return;

	for (h = 0; h < 16; h++) {
		struct cbq_class *cl;

		for (cl = q->classes[h]; cl; cl = cl->next) {
			if (arg->count < arg->skip) {
				arg->count++;
				continue;
			}
			if (arg->fn(sch, (unsigned long)cl, arg) < 0) {
				arg->stop = 1;
				return;
			}
			arg->count++;
		}
	}
}

Project: linux-2.6

static void rsvp_walk(struct tcf_proto *tp, struct tcf_walker *arg)
{
	struct rsvp_head *head = tp->root;
	unsigned h, h1;

	if (arg->stop)
		return;

	for (h = 0; h < 256; h++) {
		struct rsvp_session *s;

		for (s = head->ht[h]; s; s = s->next) {
			for (h1 = 0; h1 <= 16; h1++) {
				struct rsvp_filter *f;

				for (f = s->ht[h1]; f; f = f->next) {
					if (arg->count < arg->skip) {
						arg->count++;
						continue;
					}
					if (arg->fn(tp, (unsigned long)f, arg) < 0) {
						arg->stop = 1;
						return;
					}
					arg->count++;
				}
			}
		}
	}
}

Project: linux-2.6

static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
{
	inet6_ifa_notify(event ? : RTM_NEWADDR, ifp);

	switch (event) {
	case RTM_NEWADDR:
		dst_hold(&ifp->rt->u.dst);
		if (ip6_ins_rt(ifp->rt, NULL, NULL, NULL))
			dst_release(&ifp->rt->u.dst);
		if (ifp->idev->cnf.forwarding)
			addrconf_join_anycast(ifp);
		break;
	case RTM_DELADDR:
		if (ifp->idev->cnf.forwarding)
			addrconf_leave_anycast(ifp);
		addrconf_leave_solict(ifp->idev, &ifp->addr);
		dst_hold(&ifp->rt->u.dst);
		if (ip6_del_rt(ifp->rt, NULL, NULL, NULL))
			dst_free(&ifp->rt->u.dst);
		else
			dst_release(&ifp->rt->u.dst);
		break;
	}
}

Project: linux-2.6

cbq_reset(struct Qdisc* sch)
{
	struct cbq_sched_data *q = qdisc_priv(sch);
	struct cbq_class *cl;
	int prio;
	unsigned h;

	q->activemask = 0;
	q->pmask = 0;
	q->tx_class = NULL;
	q->tx_borrowed = NULL;
	del_timer(&q->wd_timer);
	del_timer(&q->delay_timer);
	q->toplevel = TC_CBQ_MAXLEVEL;
	PSCHED_GET_TIME(q->now);
	q->now_rt = q->now;

	for (prio = 0; prio <= TC_CBQ_MAXPRIO; prio++)
		q->active[prio] = NULL;

	for (h = 0; h < 16; h++) {
		for (cl = q->classes[h]; cl; cl = cl->next) {
			qdisc_reset(cl->q);

			cl->next_alive = NULL;
			PSCHED_SET_PASTPERFECT(cl->undertime);
			cl->avgidle = cl->maxidle;
			cl->deficit = cl->quantum;
			cl->cpriority = cl->priority;
		}
	}
	sch->q.qlen = 0;
}

Project: linux-2.6

int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *addr)
{
	struct inet6_dev *idev;
	int err = -EADDRNOTAVAIL;

	read_lock(&addrconf_lock);
	if ((idev = __in6_dev_get(dev)) != NULL) {
		struct inet6_ifaddr *ifp;

		read_lock_bh(&idev->lock);
		for (ifp=idev->addr_list; ifp; ifp=ifp->if_next) {
			if (ifp->scope == IFA_LINK && !(ifp->flags&IFA_F_TENTATIVE)) {
				ipv6_addr_copy(addr, &ifp->addr);
				err = 0;
				break;
			}
		}
		read_unlock_bh(&idev->lock);
	}
	read_unlock(&addrconf_lock);
	return err;
}

Project: linux-2.6

static void addrconf_sysctl_register(struct inet6_dev *idev, struct ipv6_devconf *p)
{
	int i;
	struct net_device *dev = idev ? idev->dev : NULL;
	struct addrconf_sysctl_table *t;
	char *dev_name = NULL;

	t = kmalloc(sizeof(*t), GFP_KERNEL);
	if (t == NULL)
		return;
	memcpy(t, &addrconf_sysctl, sizeof(*t));
	for (i=0; t->addrconf_vars[i].data; i++) {
		t->addrconf_vars[i].data += (char*)p - (char*)&ipv6_devconf;
		t->addrconf_vars[i].de = NULL;
		t->addrconf_vars[i].extra1 = idev; /* embedded; no ref */
	}
	if (dev) {
		dev_name = dev->name; 
		t->addrconf_dev[0].ctl_name = dev->ifindex;
	} else {
		dev_name = "default";
		t->addrconf_dev[0].ctl_name = NET_PROTO_CONF_DEFAULT;
	}

	/* 
	 * Make a copy of dev_name, because '.procname' is regarded as const 
	 * by sysctl and we wouldn't want anyone to change it under our feet
	 * (see SIOCSIFNAME).
	 */	
	dev_name = kstrdup(dev_name, GFP_KERNEL);
	if (!dev_name)
	    goto free;

	t->addrconf_dev[0].procname = dev_name;

	t->addrconf_dev[0].child = t->addrconf_vars;
	t->addrconf_dev[0].de = NULL;
	t->addrconf_conf_dir[0].child = t->addrconf_dev;
	t->addrconf_conf_dir[0].de = NULL;
	t->addrconf_proto_dir[0].child = t->addrconf_conf_dir;
	t->addrconf_proto_dir[0].de = NULL;
	t->addrconf_root_dir[0].child = t->addrconf_proto_dir;
	t->addrconf_root_dir[0].de = NULL;

	t->sysctl_header = register_sysctl_table(t->addrconf_root_dir, 0);
	if (t->sysctl_header == NULL)
		goto free_procname;
	else
		p->sysctl = t;
	return;

	/* error path */
 free_procname:
	kfree(dev_name);
 free:
	kfree(t);

	return;
}

Project: linux-2.6

static struct inet6_ifaddr *if6_get_next(struct seq_file *seq, struct inet6_ifaddr *ifa)
{
	struct if6_iter_state *state = seq->private;

	ifa = ifa->lst_next;
try_again:
	if (!ifa && ++state->bucket < IN6_ADDR_HSIZE) {
		ifa = inet6_addr_lst[state->bucket];
		goto try_again;
	}
	return ifa;
}

Project: linux-2.6

static int inet6_dump_addr(struct sk_buff *skb, struct netlink_callback *cb,
			   enum addr_type_t type)
{
	int idx, ip_idx;
	int s_idx, s_ip_idx;
	int err = 1;
	struct net_device *dev;
	struct inet6_dev *idev = NULL;
	struct inet6_ifaddr *ifa;
	struct ifmcaddr6 *ifmca;
	struct ifacaddr6 *ifaca;

	s_idx = cb->args[0];
	s_ip_idx = ip_idx = cb->args[1];
	read_lock(&dev_base_lock);
	
	for (dev = dev_base, idx = 0; dev; dev = dev->next, idx++) {
		if (idx < s_idx)
			continue;
		if (idx > s_idx)
			s_ip_idx = 0;
		ip_idx = 0;
		if ((idev = in6_dev_get(dev)) == NULL)
			continue;
		read_lock_bh(&idev->lock);
		switch (type) {
		case UNICAST_ADDR:
			/* unicast address */
			for (ifa = idev->addr_list; ifa;
			     ifa = ifa->if_next, ip_idx++) {
				if (ip_idx < s_ip_idx)
					continue;
				if ((err = inet6_fill_ifaddr(skb, ifa, 
				    NETLINK_CB(cb->skb).pid, 
				    cb->nlh->nlmsg_seq, RTM_NEWADDR,
				    NLM_F_MULTI)) <= 0)
					goto done;
			}
			/* temp addr */
#ifdef CONFIG_IPV6_PRIVACY
			for (ifa = idev->tempaddr_list; ifa; 
			     ifa = ifa->tmp_next, ip_idx++) {
				if (ip_idx < s_ip_idx)
					continue;
				if ((err = inet6_fill_ifaddr(skb, ifa, 
				    NETLINK_CB(cb->skb).pid, 
				    cb->nlh->nlmsg_seq, RTM_NEWADDR,
				    NLM_F_MULTI)) <= 0) 
					goto done;
			}
#endif
			break;
		case MULTICAST_ADDR:
			/* multicast address */
			for (ifmca = idev->mc_list; ifmca; 
			     ifmca = ifmca->next, ip_idx++) {
				if (ip_idx < s_ip_idx)
					continue;
				if ((err = inet6_fill_ifmcaddr(skb, ifmca, 
				    NETLINK_CB(cb->skb).pid, 
				    cb->nlh->nlmsg_seq, RTM_GETMULTICAST,
				    NLM_F_MULTI)) <= 0)
					goto done;
			}
			break;
		case ANYCAST_ADDR:
			/* anycast address */
			for (ifaca = idev->ac_list; ifaca;
			     ifaca = ifaca->aca_next, ip_idx++) {
				if (ip_idx < s_ip_idx)
					continue;
				if ((err = inet6_fill_ifacaddr(skb, ifaca, 
				    NETLINK_CB(cb->skb).pid, 
				    cb->nlh->nlmsg_seq, RTM_GETANYCAST,
				    NLM_F_MULTI)) <= 0) 
					goto done;
			}
			break;
		default:
			break;
		}
		read_unlock_bh(&idev->lock);
		in6_dev_put(idev);
	}
done:
	if (err <= 0) {
		read_unlock_bh(&idev->lock);
		in6_dev_put(idev);
	}
	read_unlock(&dev_base_lock);
	cb->args[0] = idx;
	cb->args[1] = ip_idx;
	return skb->len;
}