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
  ...

29 files changed, 160 insertions, 177 deletions

diff --git a/drivers/net/sungem.c b/drivers/net/sungem.c
index f6fedcc32de1..68872142530b 100644
--- a/drivers/net/sungem.c
+++ b/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);
 }
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 39f3d6519035..5fccfe222a63 100644
--- a/fs/proc/generic.c
+++ b/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;
diff --git a/fs/proc/proc_net.c b/fs/proc/proc_net.c
index 131f9c68be5f..0afe21ee0607 100644
--- a/fs/proc/proc_net.c
+++ b/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);
 }
diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h
index 1273c6ec535c..523528d237b0 100644
--- a/include/linux/proc_fs.h
+++ b/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 {
diff --git a/include/net/sctp/constants.h b/include/net/sctp/constants.h
index f30b537d6952..05f22a6afbcd 100644
--- a/include/net/sctp/constants.h
+++ b/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
 
diff --git a/lib/textsearch.c b/lib/textsearch.c
index 88c98a2ec8d9..be8bda3862f5 100644
--- a/lib/textsearch.c
+++ b/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
         /*
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 7a36878241da..4f99bb86af5c 100644
--- a/net/8021q/vlan_dev.c
+++ b/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;
 
diff --git a/net/bridge/br.c b/net/bridge/br.c
index 93867bb6cc97..a90182873120 100644
--- a/net/bridge/br.c
+++ b/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 @@ err_out3:
 err_out2:
         br_netfilter_fini();
 err_out1:
+        br_fdb_fini();
+err_out:
         llc_sap_put(br_stp_sap);
         return err;
 }
diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c
index 3cedd4eeeed6..0ee79a726d91 100644
--- a/net/bridge/br_input.c
+++ b/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;
                 }
diff --git a/net/bridge/netfilter/ebtable_broute.c b/net/bridge/netfilter/ebtable_broute.c
index e44519ebf1d2..be6f18681053 100644
--- a/net/bridge/netfilter/ebtable_broute.c
+++ b/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);
 }
diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c
index 66e266fb5908..3bc82dc83b38 100644
--- a/net/decnet/dn_dev.c
+++ b/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))
diff --git a/net/ieee80211/ieee80211_tx.c b/net/ieee80211/ieee80211_tx.c
index a4c3c51140a3..6d06f1385e28 100644
--- a/net/ieee80211/ieee80211_tx.c
+++ b/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);
 }
diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c
index b0170732b5e9..e468e7a7aac4 100644
--- a/net/ipv4/inet_diag.c
+++ b/net/ipv4/inet_diag.c
@@ -51,6 +51,29 @@ static struct sock *idiagnl;
 #define INET_DIAG_PUT(skb, attrtype, attrlen) \
         RTA_DATA(__RTA_PUT(skb, attrtype, attrlen))
 
+static DEFINE_MUTEX(inet_diag_table_mutex);
+
+static const struct inet_diag_handler *inet_diag_lock_handler(int type)
+{
+#ifdef CONFIG_KMOD
+        if (!inet_diag_table[type])
+                request_module("net-pf-%d-proto-%d-type-%d", PF_NETLINK,
+                               NETLINK_INET_DIAG, type);
+#endif
+
+        mutex_lock(&inet_diag_table_mutex);
+        if (!inet_diag_table[type])
+                return ERR_PTR(-ENOENT);
+
+        return inet_diag_table[type];
+}
+
+static inline void inet_diag_unlock_handler(
+        const struct inet_diag_handler *handler)
+{
+        mutex_unlock(&inet_diag_table_mutex);
+}
+
 static int inet_csk_diag_fill(struct sock *sk,
                               struct sk_buff *skb,
                               int ext, u32 pid, u32 seq, u16 nlmsg_flags,
@@ -235,9 +258,12 @@ static int inet_diag_get_exact(struct sk_buff *in_skb,
         struct inet_hashinfo *hashinfo;
         const struct inet_diag_handler *handler;
 
-        handler = inet_diag_table[nlh->nlmsg_type];
-        BUG_ON(handler == NULL);
+        handler = inet_diag_lock_handler(nlh->nlmsg_type);
+        if (!handler)
+                return -ENOENT;
+
         hashinfo = handler->idiag_hashinfo;
+        err = -EINVAL;
 
         if (req->idiag_family == AF_INET) {
                 sk = inet_lookup(hashinfo, req->id.idiag_dst[0],
@@ -255,11 +281,12 @@ static int inet_diag_get_exact(struct sk_buff *in_skb,
         }
 #endif
         else {
-                return -EINVAL;
+                goto unlock;
         }
 
+        err = -ENOENT;
         if (sk == NULL)
-                return -ENOENT;
+                goto unlock;
 
         err = -ESTALE;
         if ((req->id.idiag_cookie[0] != INET_DIAG_NOCOOKIE ||
@@ -296,6 +323,8 @@ out:
                 else
                         sock_put(sk);
         }
+unlock:
+        inet_diag_unlock_handler(handler);
         return err;
 }
 
@@ -678,8 +707,10 @@ static int inet_diag_dump(struct sk_buff *skb, struct netlink_callback *cb)
         const struct inet_diag_handler *handler;
         struct inet_hashinfo *hashinfo;
 
-        handler = inet_diag_table[cb->nlh->nlmsg_type];
-        BUG_ON(handler == NULL);
+        handler = inet_diag_lock_handler(cb->nlh->nlmsg_type);
+        if (!handler)
+                goto no_handler;
+
         hashinfo = handler->idiag_hashinfo;
 
         s_i = cb->args[1];
@@ -743,7 +774,7 @@ skip_listen_ht:
         }
 
         if (!(r->idiag_states & ~(TCPF_LISTEN | TCPF_SYN_RECV)))
-                return skb->len;
+                goto unlock;
 
         for (i = s_i; i < hashinfo->ehash_size; i++) {
                 struct inet_ehash_bucket *head = &hashinfo->ehash[i];
@@ -805,6 +836,9 @@ next_dying:
 done:
         cb->args[1] = i;
         cb->args[2] = num;
+unlock:
+        inet_diag_unlock_handler(handler);
+no_handler:
         return skb->len;
 }
 
@@ -816,15 +850,6 @@ static int inet_diag_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
             nlmsg_len(nlh) < hdrlen)
                 return -EINVAL;
 
-#ifdef CONFIG_KMOD
-        if (inet_diag_table[nlh->nlmsg_type] == NULL)
-                request_module("net-pf-%d-proto-%d-type-%d", PF_NETLINK,
-                               NETLINK_INET_DIAG, nlh->nlmsg_type);
-#endif
-
-        if (inet_diag_table[nlh->nlmsg_type] == NULL)
-                return -ENOENT;
-
         if (nlh->nlmsg_flags & NLM_F_DUMP) {
                 if (nlmsg_attrlen(nlh, hdrlen)) {
                         struct nlattr *attr;
@@ -853,8 +878,6 @@ static void inet_diag_rcv(struct sk_buff *skb)
         mutex_unlock(&inet_diag_mutex);
 }
 
-static DEFINE_SPINLOCK(inet_diag_register_lock);
-
 int inet_diag_register(const struct inet_diag_handler *h)
 {
         const __u16 type = h->idiag_type;
@@ -863,13 +886,13 @@ int inet_diag_register(const struct inet_diag_handler *h)
         if (type >= INET_DIAG_GETSOCK_MAX)
                 goto out;
 
-        spin_lock(&inet_diag_register_lock);
+        mutex_lock(&inet_diag_table_mutex);
         err = -EEXIST;
         if (inet_diag_table[type] == NULL) {
                 inet_diag_table[type] = h;
                 err = 0;
         }
-        spin_unlock(&inet_diag_register_lock);
+        mutex_unlock(&inet_diag_table_mutex);
 out:
         return err;
 }
@@ -882,11 +905,9 @@ void inet_diag_unregister(const struct inet_diag_handler *h)
         if (type >= INET_DIAG_GETSOCK_MAX)
                 return;
 
-        spin_lock(&inet_diag_register_lock);
+        mutex_lock(&inet_diag_table_mutex);
         inet_diag_table[type] = NULL;
-        spin_unlock(&inet_diag_register_lock);
-
-        synchronize_rcu();
+        mutex_unlock(&inet_diag_table_mutex);
 }
 EXPORT_SYMBOL_GPL(inet_diag_unregister);
 
diff --git a/net/ipv4/tcp_illinois.c b/net/ipv4/tcp_illinois.c
index 64f1cbaf96e8..5aa5f5496d6d 100644
--- a/net/ipv4/tcp_illinois.c
+++ b/net/ipv4/tcp_illinois.c
@@ -298,7 +298,7 @@ static u32 tcp_illinois_ssthresh(struct sock *sk)
         struct illinois *ca = inet_csk_ca(sk);
 
         /* Multiplicative decrease */
-        return max((tp->snd_cwnd * ca->beta) >> BETA_SHIFT, 2U);
+        return max(tp->snd_cwnd - ((tp->snd_cwnd * ca->beta) >> BETA_SHIFT), 2U);
 }
 
 
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 567664eac463..e8c347579da9 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2293,6 +2293,9 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
                                 break;
                         }
 
+                        if (!idev && dev->mtu >= IPV6_MIN_MTU)
+                                idev = ipv6_add_dev(dev);
+
                         if (idev)
                                 idev->if_flags |= IF_READY;
                 } else {
@@ -2357,12 +2360,18 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
                 break;
 
         case NETDEV_CHANGEMTU:
-                if ( idev && dev->mtu >= IPV6_MIN_MTU) {
+                if (idev && dev->mtu >= IPV6_MIN_MTU) {
                         rt6_mtu_change(dev, dev->mtu);
                         idev->cnf.mtu6 = dev->mtu;
                         break;
                 }
 
+                if (!idev && dev->mtu >= IPV6_MIN_MTU) {
+                        idev = ipv6_add_dev(dev);
+                        if (idev)
+                                break;
+                }
+
                 /* MTU falled under IPV6_MIN_MTU. Stop IPv6 on this interface. */
 
         case NETDEV_DOWN:
diff --git a/net/mac80211/ieee80211.c b/net/mac80211/ieee80211.c
index 59350b8727ec..505af1f067ab 100644
--- a/net/mac80211/ieee80211.c
+++ b/net/mac80211/ieee80211.c
@@ -216,6 +216,7 @@ static int ieee80211_open(struct net_device *dev)
                         res = local->ops->start(local_to_hw(local));
                 if (res)
                         return res;
+                ieee80211_hw_config(local);
         }
 
         switch (sdata->type) {
@@ -232,7 +233,6 @@ static int ieee80211_open(struct net_device *dev)
                         netif_tx_unlock_bh(local->mdev);
 
                         local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP;
-                        ieee80211_hw_config(local);
                 }
                 break;
         case IEEE80211_IF_TYPE_STA:
@@ -334,8 +334,7 @@ static int ieee80211_stop(struct net_device *dev)
                         ieee80211_configure_filter(local);
                         netif_tx_unlock_bh(local->mdev);
 
-                        local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP;
-                        ieee80211_hw_config(local);
+                        local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP;
                 }
                 break;
         case IEEE80211_IF_TYPE_STA:
@@ -357,6 +356,11 @@ static int ieee80211_stop(struct net_device *dev)
                         cancel_delayed_work(&local->scan_work);
                 }
                 flush_workqueue(local->hw.workqueue);
+
+                sdata->u.sta.flags &= ~IEEE80211_STA_PRIVACY_INVOKED;
+                kfree(sdata->u.sta.extra_ie);
+                sdata->u.sta.extra_ie = NULL;
+                sdata->u.sta.extra_ie_len = 0;
                 /* fall through */
         default:
                 conf.if_id = dev->ifindex;
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 428a9fcf57d6..00f908d9275e 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -997,7 +997,7 @@ ieee80211_rx_h_drop_unencrypted(struct ieee80211_txrx_data *rx)
         if (unlikely(!(rx->fc & IEEE80211_FCTL_PROTECTED) &&
                      (rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA &&
                      (rx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_NULLFUNC &&
-                     rx->sdata->drop_unencrypted &&
+                     (rx->key || rx->sdata->drop_unencrypted) &&
                      (rx->sdata->eapol == 0 || !ieee80211_is_eapol(rx->skb)))) {
                 if (net_ratelimit())
                         printk(KERN_DEBUG "%s: RX non-WEP frame, but expected "
diff --git a/net/mac80211/wep.c b/net/mac80211/wep.c
index 9bf0e1cc530a..b5f3413403bd 100644
--- a/net/mac80211/wep.c
+++ b/net/mac80211/wep.c
@@ -265,7 +265,8 @@ int ieee80211_wep_decrypt(struct ieee80211_local *local, struct sk_buff *skb,
         if (ieee80211_wep_decrypt_data(local->wep_rx_tfm, rc4key, klen,
                                        skb->data + hdrlen + WEP_IV_LEN,
                                        len)) {
-                printk(KERN_DEBUG "WEP decrypt failed (ICV)\n");
+                if (net_ratelimit())
+                        printk(KERN_DEBUG "WEP decrypt failed (ICV)\n");
                 ret = -1;
         }
 
diff --git a/net/netfilter/xt_CONNMARK.c b/net/netfilter/xt_CONNMARK.c
index 856793e8db7a..0621ca7de3b0 100644
--- a/net/netfilter/xt_CONNMARK.c
+++ b/net/netfilter/xt_CONNMARK.c
@@ -86,11 +86,6 @@ checkentry(const char *tablename,
 {
         const struct xt_connmark_target_info *matchinfo = targinfo;
 
-        if (nf_ct_l3proto_try_module_get(target->family) < 0) {
-                printk(KERN_WARNING "can't load conntrack support for "
-                                    "proto=%d\n", target->family);
-                return false;
-        }
         if (matchinfo->mode == XT_CONNMARK_RESTORE) {
                 if (strcmp(tablename, "mangle") != 0) {
                         printk(KERN_WARNING "CONNMARK: restore can only be "
@@ -103,6 +98,11 @@ checkentry(const char *tablename,
                 printk(KERN_WARNING "CONNMARK: Only supports 32bit mark\n");
                 return false;
         }
+        if (nf_ct_l3proto_try_module_get(target->family) < 0) {
+                printk(KERN_WARNING "can't load conntrack support for "
+                                    "proto=%d\n", target->family);
+                return false;
+        }
         return true;
 }
 
diff --git a/net/netfilter/xt_CONNSECMARK.c b/net/netfilter/xt_CONNSECMARK.c
index 021b5c8d20e2..d8feba9bdb48 100644
--- a/net/netfilter/xt_CONNSECMARK.c
+++ b/net/netfilter/xt_CONNSECMARK.c
@@ -90,11 +90,6 @@ static bool checkentry(const char *tablename, const void *entry,
 {
         const struct xt_connsecmark_target_info *info = targinfo;
 
-        if (nf_ct_l3proto_try_module_get(target->family) < 0) {
-                printk(KERN_WARNING "can't load conntrack support for "
-                                    "proto=%d\n", target->family);
-                return false;
-        }
         switch (info->mode) {
         case CONNSECMARK_SAVE:
         case CONNSECMARK_RESTORE:
@@ -105,6 +100,11 @@ static bool checkentry(const char *tablename, const void *entry,
                 return false;
         }
 
+        if (nf_ct_l3proto_try_module_get(target->family) < 0) {
+                printk(KERN_WARNING "can't load conntrack support for "
+                                    "proto=%d\n", target->family);
+                return false;
+        }
         return true;
 }
 
diff --git a/net/netfilter/xt_TCPMSS.c b/net/netfilter/xt_TCPMSS.c
index 07435a602b11..8e76d1f52fbe 100644
--- a/net/netfilter/xt_TCPMSS.c
+++ b/net/netfilter/xt_TCPMSS.c
@@ -174,10 +174,8 @@ xt_tcpmss_target6(struct sk_buff *skb,
 
         nexthdr = ipv6h->nexthdr;
         tcphoff = ipv6_skip_exthdr(skb, sizeof(*ipv6h), &nexthdr);
-        if (tcphoff < 0) {
-                WARN_ON(1);
+        if (tcphoff < 0)
                 return NF_DROP;
-        }
         ret = tcpmss_mangle_packet(skb, targinfo, tcphoff,
                                    sizeof(*ipv6h) + sizeof(struct tcphdr));
         if (ret < 0)
diff --git a/net/rfkill/rfkill.c b/net/rfkill/rfkill.c
index 73d60a307129..4469a7be006c 100644
--- a/net/rfkill/rfkill.c
+++ b/net/rfkill/rfkill.c
@@ -60,11 +60,7 @@ static void rfkill_led_trigger(struct rfkill *rfkill,
 static int rfkill_toggle_radio(struct rfkill *rfkill,
                                 enum rfkill_state state)
 {
-        int retval;
-
-        retval = mutex_lock_interruptible(&rfkill->mutex);
-        if (retval)
-                return retval;
+        int retval = 0;
 
         if (state != rfkill->state) {
                 retval = rfkill->toggle_radio(rfkill->data, state);
@@ -74,7 +70,6 @@ static int rfkill_toggle_radio(struct rfkill *rfkill,
                 }
         }
 
-        mutex_unlock(&rfkill->mutex);
         return retval;
 }
 
@@ -158,12 +153,13 @@ static ssize_t rfkill_state_store(struct device *dev,
         if (!capable(CAP_NET_ADMIN))
                 return -EPERM;
 
+        if (mutex_lock_interruptible(&rfkill->mutex))
+                return -ERESTARTSYS;
         error = rfkill_toggle_radio(rfkill,
                         state ? RFKILL_STATE_ON : RFKILL_STATE_OFF);
-        if (error)
-                return error;
+        mutex_unlock(&rfkill->mutex);
 
-        return count;
+        return error ? error : count;
 }
 
 static ssize_t rfkill_claim_show(struct device *dev,
diff --git a/net/rxrpc/Kconfig b/net/rxrpc/Kconfig
index e662f1d07664..0d3103c4f11c 100644
--- a/net/rxrpc/Kconfig
+++ b/net/rxrpc/Kconfig
@@ -5,6 +5,7 @@
 config AF_RXRPC
         tristate "RxRPC session sockets"
         depends on INET && EXPERIMENTAL
+        select CRYPTO
         select KEYS
         help
           Say Y or M here to include support for RxRPC session sockets (just
diff --git a/net/sctp/Kconfig b/net/sctp/Kconfig
index 8210f549c492..5390bc792159 100644
--- a/net/sctp/Kconfig
+++ b/net/sctp/Kconfig
@@ -6,9 +6,9 @@ menuconfig IP_SCTP
         tristate "The SCTP Protocol (EXPERIMENTAL)"
         depends on INET && EXPERIMENTAL
         depends on IPV6 || IPV6=n
-        select CRYPTO if SCTP_HMAC_SHA1 || SCTP_HMAC_MD5
-        select CRYPTO_HMAC if SCTP_HMAC_SHA1 || SCTP_HMAC_MD5
-        select CRYPTO_SHA1 if SCTP_HMAC_SHA1
+        select CRYPTO
+        select CRYPTO_HMAC
+        select CRYPTO_SHA1
         select CRYPTO_MD5 if SCTP_HMAC_MD5
         ---help---
           Stream Control Transmission Protocol
diff --git a/net/sctp/auth.c b/net/sctp/auth.c
index 6d5fa6bb371b..97e6ebd14500 100644
--- a/net/sctp/auth.c
+++ b/net/sctp/auth.c
@@ -54,11 +54,13 @@ static struct sctp_hmac sctp_hmac_list[SCTP_AUTH_NUM_HMACS] = {
                 /* id 2 is reserved as well */
                 .hmac_id = SCTP_AUTH_HMAC_ID_RESERVED_2,
         },
+#if defined (CONFIG_CRYPTO_SHA256) || defined (CONFIG_CRYPTO_SHA256_MODULE)
         {
                 .hmac_id = SCTP_AUTH_HMAC_ID_SHA256,
                 .hmac_name="hmac(sha256)",
                 .hmac_len = SCTP_SHA256_SIG_SIZE,
         }
+#endif
 };
 
 
@@ -631,7 +633,7 @@ static int __sctp_auth_cid(sctp_cid_t chunk, struct sctp_chunks_param *param)
         int found = 0;
         int i;
 
-        if (!param)
+        if (!param || param->param_hdr.length == 0)
                 return 0;
 
         len = ntohs(param->param_hdr.length) - sizeof(sctp_paramhdr_t);
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 5a9783c38de1..f4876291bb5e 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -77,6 +77,8 @@ static int sctp_process_param(struct sctp_association *asoc,
                               union sctp_params param,
                               const union sctp_addr *peer_addr,
                               gfp_t gfp);
+static void *sctp_addto_param(struct sctp_chunk *chunk, int len,
+                              const void *data);
 
 /* What was the inbound interface for this chunk? */
 int sctp_chunk_iif(const struct sctp_chunk *chunk)
@@ -207,11 +209,7 @@ struct sctp_chunk *sctp_make_init(const struct sctp_association *asoc,
 
         chunksize = sizeof(init) + addrs_len + SCTP_SAT_LEN(num_types);
         chunksize += sizeof(ecap_param);
-        if (sctp_prsctp_enable) {
-                chunksize += sizeof(prsctp_param);
-                extensions[num_ext] = SCTP_CID_FWD_TSN;
-                num_ext += 1;
-        }
+
         /* ADDIP: Section 4.2.7:
          *  An implementation supporting this extension [ADDIP] MUST list
          *  the ASCONF,the ASCONF-ACK, and the AUTH  chunks in its INIT and
@@ -243,7 +241,7 @@ struct sctp_chunk *sctp_make_init(const struct sctp_association *asoc,
                 if (auth_chunks->length)
                         chunksize += ntohs(auth_chunks->length);
                 else
-                        auth_hmacs = NULL;
+                        auth_chunks = NULL;
 
                 extensions[num_ext] = SCTP_CID_AUTH;
                 num_ext += 1;
@@ -297,7 +295,7 @@ struct sctp_chunk *sctp_make_init(const struct sctp_association *asoc,
                             htons(sizeof(sctp_supported_ext_param_t) + num_ext);
                 sctp_addto_chunk(retval, sizeof(sctp_supported_ext_param_t),
                                 &ext_param);
-                sctp_addto_chunk(retval, num_ext, extensions);
+                sctp_addto_param(retval, num_ext, extensions);
         }
 
         if (sctp_prsctp_enable)
@@ -371,20 +369,12 @@ struct sctp_chunk *sctp_make_init_ack(const struct sctp_association *asoc,
         if (asoc->peer.ecn_capable)
                 chunksize += sizeof(ecap_param);
 
-        /* Tell peer that we'll do PR-SCTP only if peer advertised.  */
-        if (asoc->peer.prsctp_capable) {
-                chunksize += sizeof(prsctp_param);
-                extensions[num_ext] = SCTP_CID_FWD_TSN;
-                num_ext += 1;
-        }
-
         if (sctp_addip_enable) {
                 extensions[num_ext] = SCTP_CID_ASCONF;
                 extensions[num_ext+1] = SCTP_CID_ASCONF_ACK;
                 num_ext += 2;
         }
 
-        chunksize += sizeof(ext_param) + num_ext;
         chunksize += sizeof(aiparam);
 
         if (asoc->peer.auth_capable) {
@@ -407,6 +397,9 @@ struct sctp_chunk *sctp_make_init_ack(const struct sctp_association *asoc,
                 num_ext += 1;
         }
 
+        if (num_ext)
+                chunksize += sizeof(sctp_supported_ext_param_t) + num_ext;
+
         /* Now allocate and fill out the chunk.  */
         retval = sctp_make_chunk(asoc, SCTP_CID_INIT_ACK, 0, chunksize);
         if (!retval)
@@ -428,7 +421,7 @@ struct sctp_chunk *sctp_make_init_ack(const struct sctp_association *asoc,
                             htons(sizeof(sctp_supported_ext_param_t) + num_ext);
                 sctp_addto_chunk(retval, sizeof(sctp_supported_ext_param_t),
                                  &ext_param);
-                sctp_addto_chunk(retval, num_ext, extensions);
+                sctp_addto_param(retval, num_ext, extensions);
         }
         if (asoc->peer.prsctp_capable)
                 sctp_addto_chunk(retval, sizeof(prsctp_param), &prsctp_param);
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index b8bbb960723c..5fb84778846d 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -959,7 +959,7 @@ sctp_disposition_t sctp_sf_sendbeat_8_3(const struct sctp_endpoint *ep,
 {
         struct sctp_transport *transport = (struct sctp_transport *) arg;
 
-        if (asoc->overall_error_count >= asoc->max_retrans) {
+        if (asoc->overall_error_count > asoc->max_retrans) {
                 sctp_add_cmd_sf(commands, SCTP_CMD_SET_SK_ERR,
                                 SCTP_ERROR(ETIMEDOUT));
                 /* CMD_ASSOC_FAILED calls CMD_DELETE_TCB. */
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index e835da8fc091..060bba4567d2 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -1637,8 +1637,15 @@ static int unix_dgram_recvmsg(struct kiocb *iocb, struct socket *sock,
         mutex_lock(&u->readlock);
 
         skb = skb_recv_datagram(sk, flags, noblock, &err);
-        if (!skb)
+        if (!skb) {
+                unix_state_lock(sk);
+                /* Signal EOF on disconnected non-blocking SEQPACKET socket. */
+                if (sk->sk_type == SOCK_SEQPACKET && err == -EAGAIN &&
+                    (sk->sk_shutdown & RCV_SHUTDOWN))
+                        err = 0;
+                unix_state_unlock(sk);
                 goto out_unlock;
+        }
 
         wake_up_interruptible_sync(&u->peer_wait);
 
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index b702bd8a3893..9a4cf2e45a15 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -1344,6 +1344,7 @@ restart:
         xfrm_nr += pols[0]->xfrm_nr;
 
         switch (policy->action) {
+        default:
         case XFRM_POLICY_BLOCK:
                 /* Prohibit the flow */
                 err = -EPERM;