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

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/net-2.6: (27 commits)
  [INET]: Fix inet_diag dead-lock regression
  [NETNS]: Fix /proc/net breakage
  [TEXTSEARCH]: Do not allow zero length patterns in the textsearch infrastructure
  [NETFILTER]: fix forgotten module release in xt_CONNMARK and xt_CONNSECMARK
  [NETFILTER]: xt_TCPMSS: remove network triggerable WARN_ON
  [DECNET]: dn_nl_deladdr() almost always returns no error
  [IPV6]: Restore IPv6 when MTU is big enough
  [RXRPC]: Add missing select on CRYPTO
  mac80211: rate limit wep decrypt failed messages
  rfkill: fix double-mutex-locking
  mac80211: drop unencrypted frames if encryption is expected
  mac80211: Fix behavior of ieee80211_open and ieee80211_close
  ieee80211: fix unaligned access in ieee80211_copy_snap
  mac80211: free ifsta->extra_ie and clear IEEE80211_STA_PRIVACY_INVOKED
  SCTP: Fix build issues with SCTP AUTH.
  SCTP: Fix chunk acceptance when no authenticated chunks were listed.
  SCTP: Fix the supported extensions paramter
  SCTP: Fix SCTP-AUTH to correctly add HMACS paramter.
  SCTP: Fix the number of HB transmissions.
  [TCP] illinois: Incorrect beta usage
  ...

drivers/net/sungem.c

@@ -2281,14 +2281,12 @@ static void gem_reset_task(struct work_struct *work)
 
 	mutex_lock(&gp->pm_mutex);
 
-	napi_disable(&gp->napi);
+	if (gp->opened)
+		napi_disable(&gp->napi);
 
 	spin_lock_irq(&gp->lock);
 	spin_lock(&gp->tx_lock);
 
-	if (gp->running == 0)
-		goto not_running;
-
 	if (gp->running) {
 		netif_stop_queue(gp->dev);
 
@@ -2298,13 +2296,14 @@ static void gem_reset_task(struct work_struct *work)
 			gem_set_link_modes(gp);
 		netif_wake_queue(gp->dev);
 	}
- not_running:
+
 	gp->reset_task_pending = 0;
 
 	spin_unlock(&gp->tx_lock);
 	spin_unlock_irq(&gp->lock);
 
-	napi_enable(&gp->napi);
+	if (gp->opened)
+		napi_enable(&gp->napi);
 
 	mutex_unlock(&gp->pm_mutex);
 }

fs/proc/generic.c

@@ -374,9 +374,16 @@ static int proc_delete_dentry(struct dentry * dentry)
 	return 1;
 }
 
+static int proc_revalidate_dentry(struct dentry *dentry, struct nameidata *nd)
+{
+	d_drop(dentry);
+	return 0;
+}
+
 static struct dentry_operations proc_dentry_operations =
 {
 	.d_delete	= proc_delete_dentry,
+	.d_revalidate	= proc_revalidate_dentry,
 };
 
 /*
@@ -397,8 +404,11 @@ struct dentry *proc_lookup(struct inode * dir, struct dentry *dentry, struct nam
 			if (de->namelen != dentry->d_name.len)
 				continue;
 			if (!memcmp(dentry->d_name.name, de->name, de->namelen)) {
-				unsigned int ino = de->low_ino;
+				unsigned int ino;
 
+				if (de->shadow_proc)
+					de = de->shadow_proc(current, de);
+				ino = de->low_ino;
 				de_get(de);
 				spin_unlock(&proc_subdir_lock);
 				error = -EINVAL;

fs/proc/proc_net.c

@@ -50,89 +50,14 @@ struct net *get_proc_net(const struct inode *inode)
 }
 EXPORT_SYMBOL_GPL(get_proc_net);
 
-static struct proc_dir_entry *proc_net_shadow;
+static struct proc_dir_entry *shadow_pde;
 
-static struct dentry *proc_net_shadow_dentry(struct dentry *parent,
+static struct proc_dir_entry *proc_net_shadow(struct task_struct *task,
 						struct proc_dir_entry *de)
 {
-	struct dentry *shadow = NULL;
-	struct inode *inode;
-	if (!de)
-		goto out;
-	de_get(de);
-	inode = proc_get_inode(parent->d_inode->i_sb, de->low_ino, de);
-	if (!inode)
-		goto out_de_put;
-	shadow = d_alloc_name(parent, de->name);
-	if (!shadow)
-		goto out_iput;
-	shadow->d_op = parent->d_op; /* proc_dentry_operations */
-	d_instantiate(shadow, inode);
-out:
-	return shadow;
-out_iput:
-	iput(inode);
-out_de_put:
-	de_put(de);
-	goto out;
-}
-
-static void *proc_net_follow_link(struct dentry *parent, struct nameidata *nd)
-{
-	struct net *net = current->nsproxy->net_ns;
-	struct dentry *shadow;
-	shadow = proc_net_shadow_dentry(parent, net->proc_net);
-	if (!shadow)
-		return ERR_PTR(-ENOENT);
-
-	dput(nd->dentry);
-	/* My dentry count is 1 and that should be enough as the
-	 * shadow dentry is thrown away immediately.
-	 */
-	nd->dentry = shadow;
-	return NULL;
+	return task->nsproxy->net_ns->proc_net;
 }
 
-static struct dentry *proc_net_lookup(struct inode *dir, struct dentry *dentry,
-				      struct nameidata *nd)
-{
-	struct net *net = current->nsproxy->net_ns;
-	struct dentry *shadow;
-
-	shadow = proc_net_shadow_dentry(nd->dentry, net->proc_net);
-	if (!shadow)
-		return ERR_PTR(-ENOENT);
-
-	dput(nd->dentry);
-	nd->dentry = shadow;
-
-	return shadow->d_inode->i_op->lookup(shadow->d_inode, dentry, nd);
-}
-
-static int proc_net_setattr(struct dentry *dentry, struct iattr *iattr)
-{
-	struct net *net = current->nsproxy->net_ns;
-	struct dentry *shadow;
-	int ret;
-
-	shadow = proc_net_shadow_dentry(dentry->d_parent, net->proc_net);
-	if (!shadow)
-		return -ENOENT;
-	ret = shadow->d_inode->i_op->setattr(shadow, iattr);
-	dput(shadow);
-	return ret;
-}
-
-static const struct file_operations proc_net_dir_operations = {
-	.read			= generic_read_dir,
-};
-
-static struct inode_operations proc_net_dir_inode_operations = {
-	.follow_link	= proc_net_follow_link,
-	.lookup		= proc_net_lookup,
-	.setattr	= proc_net_setattr,
-};
-
 static __net_init int proc_net_ns_init(struct net *net)
 {
 	struct proc_dir_entry *root, *netd, *net_statd;
@@ -185,9 +110,8 @@ static struct pernet_operations __net_initdata proc_net_ns_ops = {
 
 int __init proc_net_init(void)
 {
-	proc_net_shadow = proc_mkdir("net", NULL);
-	proc_net_shadow->proc_iops = &proc_net_dir_inode_operations;
-	proc_net_shadow->proc_fops = &proc_net_dir_operations;
+	shadow_pde = proc_mkdir("net", NULL);
+	shadow_pde->shadow_proc = proc_net_shadow;
 
 	return register_pernet_subsys(&proc_net_ns_ops);
 }

include/linux/proc_fs.h

@@ -48,6 +48,8 @@ typedef	int (read_proc_t)(char *page, char **start, off_t off,
 typedef	int (write_proc_t)(struct file *file, const char __user *buffer,
 			   unsigned long count, void *data);
 typedef int (get_info_t)(char *, char **, off_t, int);
+typedef struct proc_dir_entry *(shadow_proc_t)(struct task_struct *task,
+						struct proc_dir_entry *pde);
 
 struct proc_dir_entry {
 	unsigned int low_ino;
@@ -79,6 +81,7 @@ struct proc_dir_entry {
 	int pde_users;	/* number of callers into module in progress */
 	spinlock_t pde_unload_lock; /* proc_fops checks and pde_users bumps */
 	struct completion *pde_unload_completion;
+	shadow_proc_t *shadow_proc;
 };
 
 struct kcore_list {

include/net/sctp/constants.h

@@ -441,11 +441,14 @@ enum {
 	SCTP_AUTH_HMAC_ID_RESERVED_0,
 	SCTP_AUTH_HMAC_ID_SHA1,
 	SCTP_AUTH_HMAC_ID_RESERVED_2,
-	SCTP_AUTH_HMAC_ID_SHA256
+#if defined (CONFIG_CRYPTO_SHA256) || defined (CONFIG_CRYPTO_SHA256_MODULE)
+	SCTP_AUTH_HMAC_ID_SHA256,
+#endif
+	__SCTP_AUTH_HMAC_MAX
 };
 
-#define SCTP_AUTH_HMAC_ID_MAX	SCTP_AUTH_HMAC_ID_SHA256
-#define SCTP_AUTH_NUM_HMACS (SCTP_AUTH_HMAC_ID_SHA256 + 1)
+#define SCTP_AUTH_HMAC_ID_MAX	__SCTP_AUTH_HMAC_MAX - 1
+#define SCTP_AUTH_NUM_HMACS 	__SCTP_AUTH_HMAC_MAX
 #define SCTP_SHA1_SIG_SIZE 20
 #define SCTP_SHA256_SIG_SIZE 32
 

lib/textsearch.c

@@ -7,7 +7,7 @@
  *		2 of the License, or (at your option) any later version.
  *
  * Authors:	Thomas Graf <tgraf@suug.ch>
- * 		Pablo Neira Ayuso <pablo@eurodev.net>
+ * 		Pablo Neira Ayuso <pablo@netfilter.org>
  *
  * ==========================================================================
  *
@@ -250,7 +250,8 @@ unsigned int textsearch_find_continuous(struct ts_config *conf,
  *       the various search algorithms.
  *
  * Returns a new textsearch configuration according to the specified
- *         parameters or a ERR_PTR().
+ * parameters or a ERR_PTR(). If a zero length pattern is passed, this
+ * function returns EINVAL.
  */
 struct ts_config *textsearch_prepare(const char *algo, const void *pattern,
 				     unsigned int len, gfp_t gfp_mask, int flags)
@@ -259,6 +260,9 @@ struct ts_config *textsearch_prepare(const char *algo, const void *pattern,
 	struct ts_config *conf;
 	struct ts_ops *ops;
 
+	if (len == 0)
+		return ERR_PTR(-EINVAL);
+
 	ops = lookup_ts_algo(algo);
 #ifdef CONFIG_KMOD
 	/*

net/8021q/vlan_dev.c

@@ -462,7 +462,8 @@ int vlan_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	 * OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs...
 	 */
 
-	if (veth->h_vlan_proto != htons(ETH_P_8021Q)) {
+	if (veth->h_vlan_proto != htons(ETH_P_8021Q) ||
+		VLAN_DEV_INFO(dev)->flags & VLAN_FLAG_REORDER_HDR) {
 		int orig_headroom = skb_headroom(skb);
 		unsigned short veth_TCI;
 

net/bridge/br.c

@@ -39,7 +39,7 @@ static int __init br_init(void)
 
 	err = br_fdb_init();
 	if (err)
-		goto err_out1;
+		goto err_out;
 
 	err = br_netfilter_init();
 	if (err)
@@ -65,6 +65,8 @@ static int __init br_init(void)
 err_out2:
 	br_netfilter_fini();
 err_out1:
+	br_fdb_fini();
+err_out:
 	llc_sap_put(br_stp_sap);
 	return err;
 }

net/bridge/br_input.c

@@ -122,6 +122,7 @@ static inline int is_link_local(const unsigned char *dest)
 struct sk_buff *br_handle_frame(struct net_bridge_port *p, struct sk_buff *skb)
 {
 	const unsigned char *dest = eth_hdr(skb)->h_dest;
+	int (*rhook)(struct sk_buff *skb);
 
 	if (!is_valid_ether_addr(eth_hdr(skb)->h_source))
 		goto drop;
@@ -147,9 +148,9 @@ struct sk_buff *br_handle_frame(struct net_bridge_port *p, struct sk_buff *skb)
 
 	switch (p->state) {
 	case BR_STATE_FORWARDING:
-
-		if (br_should_route_hook) {
-			if (br_should_route_hook(skb))
+		rhook = rcu_dereference(br_should_route_hook);
+		if (rhook != NULL) {
+			if (rhook(skb))
 				return skb;
 			dest = eth_hdr(skb)->h_dest;
 		}

net/bridge/netfilter/ebtable_broute.c

@@ -70,13 +70,13 @@ static int __init ebtable_broute_init(void)
 	if (ret < 0)
 		return ret;
 	/* see br_input.c */
-	br_should_route_hook = ebt_broute;
+	rcu_assign_pointer(br_should_route_hook, ebt_broute);
 	return ret;
 }
 
 static void __exit ebtable_broute_fini(void)
 {
-	br_should_route_hook = NULL;
+	rcu_assign_pointer(br_should_route_hook, NULL);
 	synchronize_net();
 	ebt_unregister_table(&broute_table);
 }

net/decnet/dn_dev.c

@@ -651,16 +651,18 @@ static int dn_nl_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
 	struct dn_dev *dn_db;
 	struct ifaddrmsg *ifm;
 	struct dn_ifaddr *ifa, **ifap;
-	int err = -EADDRNOTAVAIL;
+	int err;
 
 	err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, dn_ifa_policy);
 	if (err < 0)
 		goto errout;
 
+	err = -ENODEV;
 	ifm = nlmsg_data(nlh);
 	if ((dn_db = dn_dev_by_index(ifm->ifa_index)) == NULL)
 		goto errout;
 
+	err = -EADDRNOTAVAIL;
 	for (ifap = &dn_db->ifa_list; (ifa = *ifap); ifap = &ifa->ifa_next) {
 		if (tb[IFA_LOCAL] &&
 		    nla_memcmp(tb[IFA_LOCAL], &ifa->ifa_local, 2))

net/ieee80211/ieee80211_tx.c

@@ -144,7 +144,8 @@ static int ieee80211_copy_snap(u8 * data, u16 h_proto)
 	snap->oui[1] = oui[1];
 	snap->oui[2] = oui[2];
 
-	*(u16 *) (data + SNAP_SIZE) = htons(h_proto);
+	h_proto = htons(h_proto);
+	memcpy(data + SNAP_SIZE, &h_proto, sizeof(u16));
 
 	return SNAP_SIZE + sizeof(u16);
 }