Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
  net_cls_act: act_simple dont ignore realloc code
  iwlwifi: make IWLWIFI a tristate
  Revert "atm: Do not free already unregistered net device."
  dccp: return -EINVAL on invalid feature length
  irda: fix !PNP support for drivers/net/irda/smsc-ircc2.c
  irda: fix !PNP support in drivers/net/irda/nsc-ircc.c
  net_cls_act: Make act_simple use of netlink policy.
  ip: Use inline function dst_metric() instead of direct access to dst->metric[]
  ip: Make use of the inline function dst_metric_locked()
  atm: Bad locking on br2684_devs modifications.
  atm: Do not free already unregistered net device.
  mac80211: Do not free net device after it is unregistered.
  bridge: Consolidate error paths in br_add_bridge().
  bridge: Net device leak in br_add_bridge().
  niu: Fix probing regression for maramba on-board chips.
  lapbeth: Release ->ethdev when unregistering device.
  xfrm: convert empty xfrm_audit_* macros to functions
  net: Fix useless comment reference loop.
  sch_htb: remove from event queue in htb_parent_to_leaf()

11 files changed, 72 insertions, 61 deletions

diff --git a/net/atm/br2684.c b/net/atm/br2684.c
index 1b228065e745..9d52ebfc1962 100644
--- a/net/atm/br2684.c
+++ b/net/atm/br2684.c
@@ -346,9 +346,9 @@ static void br2684_push(struct atm_vcc *atmvcc, struct sk_buff *skb)
 		/* skb==NULL means VCC is being destroyed */
 		br2684_close_vcc(brvcc);
 		if (list_empty(&brdev->brvccs)) {
-			read_lock(&devs_lock);
+			write_lock_irq(&devs_lock);
 			list_del(&brdev->br2684_devs);
-			read_unlock(&devs_lock);
+			write_unlock_irq(&devs_lock);
 			unregister_netdev(net_dev);
 			free_netdev(net_dev);
 		}
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index 77a981a1ee52..c2397f503b0f 100644
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -273,15 +273,13 @@ int br_add_bridge(const char *name)
 	rtnl_lock();
 	if (strchr(dev->name, '%')) {
 		ret = dev_alloc_name(dev, dev->name);
-		if (ret < 0) {
-			free_netdev(dev);
-			goto out;
-		}
+		if (ret < 0)
+			goto out_free;
 	}
 
 	ret = register_netdevice(dev);
 	if (ret)
-		goto out;
+		goto out_free;
 
 	ret = br_sysfs_addbr(dev);
 	if (ret)
@@ -289,6 +287,10 @@ int br_add_bridge(const char *name)
  out:
 	rtnl_unlock();
 	return ret;
+
+out_free:
+	free_netdev(dev);
+	goto out;
 }
 
 int br_del_bridge(const char *name)
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 4fe605fa6f8a..5c459f2b7985 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -200,7 +200,9 @@ struct sk_buff *__alloc_skb(unsigned int size, gfp_t gfp_mask,
 		goto nodata;
 
 	/*
-	 * See comment in sk_buff definition, just before the 'tail' member
+	 * Only clear those fields we need to clear, not those that we will
+	 * actually initialise below. Hence, don't put any more fields after
+	 * the tail pointer in struct sk_buff!
 	 */
 	memset(skb, 0, offsetof(struct sk_buff, tail));
 	skb->truesize = size + sizeof(struct sk_buff);
diff --git a/net/dccp/feat.c b/net/dccp/feat.c
index 4a4f6ce4498d..933a0ecf8d46 100644
--- a/net/dccp/feat.c
+++ b/net/dccp/feat.c
@@ -32,7 +32,7 @@ int dccp_feat_change(struct dccp_minisock *dmsk, u8 type, u8 feature,
 
 	if (len > 3) {
 		DCCP_WARN("invalid length %d\n", len);
-		return 1;
+		return -EINVAL;
 	}
 	/* XXX add further sanity checks */
 
diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c
index 2f665a516476..f50e88bf2661 100644
--- a/net/decnet/dn_route.c
+++ b/net/decnet/dn_route.c
@@ -235,14 +235,14 @@ static void dn_dst_update_pmtu(struct dst_entry *dst, u32 mtu)
 	else
 		min_mtu -= 21;
 
-	if (dst->metrics[RTAX_MTU-1] > mtu && mtu >= min_mtu) {
+	if (dst_metric(dst, RTAX_MTU) > mtu && mtu >= min_mtu) {
 		if (!(dst_metric_locked(dst, RTAX_MTU))) {
 			dst->metrics[RTAX_MTU-1] = mtu;
 			dst_set_expires(dst, dn_rt_mtu_expires);
 		}
 		if (!(dst_metric_locked(dst, RTAX_ADVMSS))) {
 			u32 mss = mtu - DN_MAX_NSP_DATA_HEADER;
-			if (dst->metrics[RTAX_ADVMSS-1] > mss)
+			if (dst_metric(dst, RTAX_ADVMSS) > mss)
 				dst->metrics[RTAX_ADVMSS-1] = mss;
 		}
 	}
@@ -805,12 +805,12 @@ static int dn_rt_set_next_hop(struct dn_route *rt, struct dn_fib_res *res)
 		rt->u.dst.neighbour = n;
 	}
 
-	if (rt->u.dst.metrics[RTAX_MTU-1] == 0 ||
-	    rt->u.dst.metrics[RTAX_MTU-1] > rt->u.dst.dev->mtu)
+	if (dst_metric(&rt->u.dst, RTAX_MTU) == 0 ||
+	    dst_metric(&rt->u.dst, RTAX_MTU) > rt->u.dst.dev->mtu)
 		rt->u.dst.metrics[RTAX_MTU-1] = rt->u.dst.dev->mtu;
 	mss = dn_mss_from_pmtu(dev, dst_mtu(&rt->u.dst));
-	if (rt->u.dst.metrics[RTAX_ADVMSS-1] == 0 ||
-	    rt->u.dst.metrics[RTAX_ADVMSS-1] > mss)
+	if (dst_metric(&rt->u.dst, RTAX_ADVMSS) == 0 ||
+	    dst_metric(&rt->u.dst, RTAX_ADVMSS) > mss)
 		rt->u.dst.metrics[RTAX_ADVMSS-1] = mss;
 	return 0;
 }
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 5e3685c5c407..92f90ae46f4a 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1468,14 +1468,14 @@ unsigned short ip_rt_frag_needed(struct net *net, struct iphdr *iph,
 
 					/* BSD 4.2 compatibility hack :-( */
 					if (mtu == 0 &&
-					    old_mtu >= rth->u.dst.metrics[RTAX_MTU-1] &&
+					    old_mtu >= dst_metric(&rth->u.dst, RTAX_MTU) &&
 					    old_mtu >= 68 + (iph->ihl << 2))
 						old_mtu -= iph->ihl << 2;
 
 					mtu = guess_mtu(old_mtu);
 				}
-				if (mtu <= rth->u.dst.metrics[RTAX_MTU-1]) {
-					if (mtu < rth->u.dst.metrics[RTAX_MTU-1]) {
+				if (mtu <= dst_metric(&rth->u.dst, RTAX_MTU)) {
+					if (mtu < dst_metric(&rth->u.dst, RTAX_MTU)) {
 						dst_confirm(&rth->u.dst);
 						if (mtu < ip_rt_min_pmtu) {
 							mtu = ip_rt_min_pmtu;
@@ -1497,7 +1497,7 @@ unsigned short ip_rt_frag_needed(struct net *net, struct iphdr *iph,
 
 static void ip_rt_update_pmtu(struct dst_entry *dst, u32 mtu)
 {
-	if (dst->metrics[RTAX_MTU-1] > mtu && mtu >= 68 &&
+	if (dst_metric(dst, RTAX_MTU) > mtu && mtu >= 68 &&
 	    !(dst_metric_locked(dst, RTAX_MTU))) {
 		if (mtu < ip_rt_min_pmtu) {
 			mtu = ip_rt_min_pmtu;
@@ -1613,7 +1613,7 @@ static void rt_set_nexthop(struct rtable *rt, struct fib_result *res, u32 itag)
 		       sizeof(rt->u.dst.metrics));
 		if (fi->fib_mtu == 0) {
 			rt->u.dst.metrics[RTAX_MTU-1] = rt->u.dst.dev->mtu;
-			if (rt->u.dst.metrics[RTAX_LOCK-1] & (1 << RTAX_MTU) &&
+			if (dst_metric_locked(&rt->u.dst, RTAX_MTU) &&
 			    rt->rt_gateway != rt->rt_dst &&
 			    rt->u.dst.dev->mtu > 576)
 				rt->u.dst.metrics[RTAX_MTU-1] = 576;
@@ -1624,14 +1624,14 @@ static void rt_set_nexthop(struct rtable *rt, struct fib_result *res, u32 itag)
 	} else
 		rt->u.dst.metrics[RTAX_MTU-1]= rt->u.dst.dev->mtu;
 
-	if (rt->u.dst.metrics[RTAX_HOPLIMIT-1] == 0)
+	if (dst_metric(&rt->u.dst, RTAX_HOPLIMIT) == 0)
 		rt->u.dst.metrics[RTAX_HOPLIMIT-1] = sysctl_ip_default_ttl;
-	if (rt->u.dst.metrics[RTAX_MTU-1] > IP_MAX_MTU)
+	if (dst_metric(&rt->u.dst, RTAX_MTU) > IP_MAX_MTU)
 		rt->u.dst.metrics[RTAX_MTU-1] = IP_MAX_MTU;
-	if (rt->u.dst.metrics[RTAX_ADVMSS-1] == 0)
+	if (dst_metric(&rt->u.dst, RTAX_ADVMSS) == 0)
 		rt->u.dst.metrics[RTAX_ADVMSS-1] = max_t(unsigned int, rt->u.dst.dev->mtu - 40,
 				       ip_rt_min_advmss);
-	if (rt->u.dst.metrics[RTAX_ADVMSS-1] > 65535 - 40)
+	if (dst_metric(&rt->u.dst, RTAX_ADVMSS) > 65535 - 40)
 		rt->u.dst.metrics[RTAX_ADVMSS-1] = 65535 - 40;
 
 #ifdef CONFIG_NET_CLS_ROUTE
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index eda4f4a233f3..8ac15a604e08 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -66,6 +66,7 @@
 #include <linux/mm.h>
 #include <linux/module.h>
 #include <linux/sysctl.h>
+#include <net/dst.h>
 #include <net/tcp.h>
 #include <net/inet_common.h>
 #include <linux/ipsec.h>
@@ -605,7 +606,7 @@ static u32 tcp_rto_min(struct sock *sk)
 	u32 rto_min = TCP_RTO_MIN;
 
 	if (dst && dst_metric_locked(dst, RTAX_RTO_MIN))
-		rto_min = dst->metrics[RTAX_RTO_MIN - 1];
+		rto_min = dst_metric(dst, RTAX_RTO_MIN);
 	return rto_min;
 }
 
@@ -769,7 +770,7 @@ void tcp_update_metrics(struct sock *sk)
 				dst->metrics[RTAX_RTTVAR - 1] = m;
 			else
 				dst->metrics[RTAX_RTTVAR-1] -=
-					(dst->metrics[RTAX_RTTVAR-1] - m)>>2;
+					(dst_metric(dst, RTAX_RTTVAR) - m)>>2;
 		}
 
 		if (tp->snd_ssthresh >= 0xFFFF) {
@@ -788,21 +789,21 @@ void tcp_update_metrics(struct sock *sk)
 				dst->metrics[RTAX_SSTHRESH-1] =
 					max(tp->snd_cwnd >> 1, tp->snd_ssthresh);
 			if (!dst_metric_locked(dst, RTAX_CWND))
-				dst->metrics[RTAX_CWND-1] = (dst->metrics[RTAX_CWND-1] + tp->snd_cwnd) >> 1;
+				dst->metrics[RTAX_CWND-1] = (dst_metric(dst, RTAX_CWND) + tp->snd_cwnd) >> 1;
 		} else {
 			/* Else slow start did not finish, cwnd is non-sense,
 			   ssthresh may be also invalid.
 			 */
 			if (!dst_metric_locked(dst, RTAX_CWND))
-				dst->metrics[RTAX_CWND-1] = (dst->metrics[RTAX_CWND-1] + tp->snd_ssthresh) >> 1;
-			if (dst->metrics[RTAX_SSTHRESH-1] &&
+				dst->metrics[RTAX_CWND-1] = (dst_metric(dst, RTAX_CWND) + tp->snd_ssthresh) >> 1;
+			if (dst_metric(dst, RTAX_SSTHRESH) &&
 			    !dst_metric_locked(dst, RTAX_SSTHRESH) &&
-			    tp->snd_ssthresh > dst->metrics[RTAX_SSTHRESH-1])
+			    tp->snd_ssthresh > dst_metric(dst, RTAX_SSTHRESH))
 				dst->metrics[RTAX_SSTHRESH-1] = tp->snd_ssthresh;
 		}
 
 		if (!dst_metric_locked(dst, RTAX_REORDERING)) {
-			if (dst->metrics[RTAX_REORDERING-1] < tp->reordering &&
+			if (dst_metric(dst, RTAX_REORDERING) < tp->reordering &&
 			    tp->reordering != sysctl_tcp_reordering)
 				dst->metrics[RTAX_REORDERING-1] = tp->reordering;
 		}
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index a493ad9b8914..12bba0880345 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1243,11 +1243,11 @@ install_route:
 		}
 	}
 
-	if (rt->u.dst.metrics[RTAX_HOPLIMIT-1] == 0)
+	if (dst_metric(&rt->u.dst, RTAX_HOPLIMIT) == 0)
 		rt->u.dst.metrics[RTAX_HOPLIMIT-1] = -1;
-	if (!rt->u.dst.metrics[RTAX_MTU-1])
+	if (!dst_metric(&rt->u.dst, RTAX_MTU))
 		rt->u.dst.metrics[RTAX_MTU-1] = ipv6_get_mtu(dev);
-	if (!rt->u.dst.metrics[RTAX_ADVMSS-1])
+	if (!dst_metric(&rt->u.dst, RTAX_ADVMSS))
 		rt->u.dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(net, dst_mtu(&rt->u.dst));
 	rt->u.dst.dev = dev;
 	rt->rt6i_idev = idev;
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 9ad4e3631b6b..915afadb0602 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -1766,6 +1766,7 @@ fail_wep:
 fail_rate:
 	ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev));
 	unregister_netdevice(local->mdev);
+	local->mdev = NULL;
 fail_dev:
 	rtnl_unlock();
 	sta_info_stop(local);
@@ -1773,8 +1774,10 @@ fail_sta_info:
 	debugfs_hw_del(local);
 	destroy_workqueue(local->hw.workqueue);
 fail_workqueue:
-	ieee80211_if_free(local->mdev);
-	local->mdev = NULL;
+	if (local->mdev != NULL) {
+		ieee80211_if_free(local->mdev);
+		local->mdev = NULL;
+	}
 fail_mdev_alloc:
 	wiphy_unregister(local->hw.wiphy);
 	return result;
diff --git a/net/sched/act_simple.c b/net/sched/act_simple.c
index 64b2d136c78e..1d421d059caf 100644
--- a/net/sched/act_simple.c
+++ b/net/sched/act_simple.c
@@ -6,7 +6,7 @@
  *		as published by the Free Software Foundation; either version
  *		2 of the License, or (at your option) any later version.
  *
- * Authors:	Jamal Hadi Salim (2005)
+ * Authors:	Jamal Hadi Salim (2005-8)
  *
  */
 
@@ -34,6 +34,7 @@ static struct tcf_hashinfo simp_hash_info = {
 	.lock	=	&simp_lock,
 };
 
+#define SIMP_MAX_DATA	32
 static int tcf_simp(struct sk_buff *skb, struct tc_action *a, struct tcf_result *res)
 {
 	struct tcf_defact *d = a->priv;
@@ -69,23 +70,28 @@ static int tcf_simp_release(struct tcf_defact *d, int bind)
 	return ret;
 }
 
-static int alloc_defdata(struct tcf_defact *d, u32 datalen, void *defdata)
+static int alloc_defdata(struct tcf_defact *d, char *defdata)
 {
-	d->tcfd_defdata = kmemdup(defdata, datalen, GFP_KERNEL);
+	d->tcfd_defdata = kstrndup(defdata, SIMP_MAX_DATA, GFP_KERNEL);
 	if (unlikely(!d->tcfd_defdata))
 		return -ENOMEM;
-	d->tcfd_datalen = datalen;
+
 	return 0;
 }
 
-static int realloc_defdata(struct tcf_defact *d, u32 datalen, void *defdata)
+static void reset_policy(struct tcf_defact *d, char *defdata,
+			 struct tc_defact *p)
 {
-	kfree(d->tcfd_defdata);
-	return alloc_defdata(d, datalen, defdata);
+	spin_lock_bh(&d->tcf_lock);
+	d->tcf_action = p->action;
+	memset(d->tcfd_defdata, 0, SIMP_MAX_DATA);
+	strlcpy(d->tcfd_defdata, defdata, SIMP_MAX_DATA);
+	spin_unlock_bh(&d->tcf_lock);
 }
 
 static const struct nla_policy simple_policy[TCA_DEF_MAX + 1] = {
 	[TCA_DEF_PARMS]	= { .len = sizeof(struct tc_defact) },
+	[TCA_DEF_DATA]	= { .type = NLA_STRING, .len = SIMP_MAX_DATA },
 };
 
 static int tcf_simp_init(struct nlattr *nla, struct nlattr *est,
@@ -95,28 +101,24 @@ static int tcf_simp_init(struct nlattr *nla, struct nlattr *est,
 	struct tc_defact *parm;
 	struct tcf_defact *d;
 	struct tcf_common *pc;
-	void *defdata;
-	u32 datalen = 0;
+	char *defdata;
 	int ret = 0, err;
 
 	if (nla == NULL)
 		return -EINVAL;
 
-	err = nla_parse_nested(tb, TCA_DEF_MAX, nla, NULL);
+	err = nla_parse_nested(tb, TCA_DEF_MAX, nla, simple_policy);
 	if (err < 0)
 		return err;
 
 	if (tb[TCA_DEF_PARMS] == NULL)
 		return -EINVAL;
 
-	parm = nla_data(tb[TCA_DEF_PARMS]);
-	defdata = nla_data(tb[TCA_DEF_DATA]);
-	if (defdata == NULL)
+	if (tb[TCA_DEF_DATA] == NULL)
 		return -EINVAL;
 
-	datalen = nla_len(tb[TCA_DEF_DATA]);
-	if (datalen == 0)
-		return -EINVAL;
+	parm = nla_data(tb[TCA_DEF_PARMS]);
+	defdata = nla_data(tb[TCA_DEF_DATA]);
 
 	pc = tcf_hash_check(parm->index, a, bind, &simp_hash_info);
 	if (!pc) {
@@ -126,11 +128,12 @@ static int tcf_simp_init(struct nlattr *nla, struct nlattr *est,
 			return -ENOMEM;
 
 		d = to_defact(pc);
-		ret = alloc_defdata(d, datalen, defdata);
+		ret = alloc_defdata(d, defdata);
 		if (ret < 0) {
 			kfree(pc);
 			return ret;
 		}
+		d->tcf_action = parm->action;
 		ret = ACT_P_CREATED;
 	} else {
 		d = to_defact(pc);
@@ -138,13 +141,9 @@ static int tcf_simp_init(struct nlattr *nla, struct nlattr *est,
 			tcf_simp_release(d, bind);
 			return -EEXIST;
 		}
-		realloc_defdata(d, datalen, defdata);
+		reset_policy(d, defdata, parm);
 	}
 
-	spin_lock_bh(&d->tcf_lock);
-	d->tcf_action = parm->action;
-	spin_unlock_bh(&d->tcf_lock);
-
 	if (ret == ACT_P_CREATED)
 		tcf_hash_insert(pc, &simp_hash_info);
 	return ret;
@@ -172,7 +171,7 @@ static inline int tcf_simp_dump(struct sk_buff *skb, struct tc_action *a,
 	opt.bindcnt = d->tcf_bindcnt - bind;
 	opt.action = d->tcf_action;
 	NLA_PUT(skb, TCA_DEF_PARMS, sizeof(opt), &opt);
-	NLA_PUT(skb, TCA_DEF_DATA, d->tcfd_datalen, d->tcfd_defdata);
+	NLA_PUT_STRING(skb, TCA_DEF_DATA, d->tcfd_defdata);
 	t.install = jiffies_to_clock_t(jiffies - d->tcf_tm.install);
 	t.lastuse = jiffies_to_clock_t(jiffies - d->tcf_tm.lastuse);
 	t.expires = jiffies_to_clock_t(d->tcf_tm.expires);
diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
index 66148cc4759e..5bc1ed490180 100644
--- a/net/sched/sch_htb.c
+++ b/net/sched/sch_htb.c
@@ -1197,12 +1197,16 @@ static inline int htb_parent_last_child(struct htb_class *cl)
 	return 1;
 }
 
-static void htb_parent_to_leaf(struct htb_class *cl, struct Qdisc *new_q)
+static void htb_parent_to_leaf(struct htb_sched *q, struct htb_class *cl,
+			       struct Qdisc *new_q)
 {
 	struct htb_class *parent = cl->parent;
 
 	BUG_TRAP(!cl->level && cl->un.leaf.q && !cl->prio_activity);
 
+	if (parent->cmode != HTB_CAN_SEND)
+		htb_safe_rb_erase(&parent->pq_node, q->wait_pq + parent->level);
+
 	parent->level = 0;
 	memset(&parent->un.inner, 0, sizeof(parent->un.inner));
 	INIT_LIST_HEAD(&parent->un.leaf.drop_list);
@@ -1300,7 +1304,7 @@ static int htb_delete(struct Qdisc *sch, unsigned long arg)
 		htb_deactivate(q, cl);
 
 	if (last_child)
-		htb_parent_to_leaf(cl, new_q);
+		htb_parent_to_leaf(q, cl, new_q);
 
 	if (--cl->refcnt == 0)
 		htb_destroy_class(sch, cl);