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: (92 commits)
  gianfar: Revive VLAN support
  vlan: Export symbols as non GPL symbols.
  bnx2x: tx_has_work should not wait for FW
  netxen: reduce memory footprint
  netxen: fix vlan tso/checksum offload
  net: Fix linux/if_frad.h's suitability for userspace.
  net: Move config NET_NS to from net/Kconfig to init/Kconfig
  isdn: Fix missing ifdef in isdn_ppp
  networking: document "nc" in addition to "netcat" in netconsole.txt
  e1000e: workaround hw errata
  af_key: initialize xfrm encap_oa
  virtio_net: Fix MAX_PACKET_LEN to support 802.1Q VLANs
  lcs: fix compilation for !CONFIG_IP_MULTICAST
  rtl8187: Add termination packet to prevent stall
  iwlwifi: fix rs_get_rate WARN_ON()
  p54usb: fix packet loss with first generation devices
  sctp: Fix another socket race during accept/peeloff
  sctp: Properly timestamp outgoing data chunks for rtx purposes
  sctp: Correctly start rtx timer on new packet transmissions.
  sctp: Fix crc32c calculations on big-endian arhes.
  ...

17 files changed, 206 insertions, 79 deletions

diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
index 6c1323940263..e9db889d6222 100644
--- a/net/8021q/vlan_core.c
+++ b/net/8021q/vlan_core.c
@@ -62,13 +62,13 @@ struct net_device *vlan_dev_real_dev(const struct net_device *dev)
 {
         return vlan_dev_info(dev)->real_dev;
 }
-EXPORT_SYMBOL_GPL(vlan_dev_real_dev);
+EXPORT_SYMBOL(vlan_dev_real_dev);
 
 u16 vlan_dev_vlan_id(const struct net_device *dev)
 {
         return vlan_dev_info(dev)->vlan_id;
 }
-EXPORT_SYMBOL_GPL(vlan_dev_vlan_id);
+EXPORT_SYMBOL(vlan_dev_vlan_id);
 
 static int vlan_gro_common(struct napi_struct *napi, struct vlan_group *grp,
                            unsigned int vlan_tci, struct sk_buff *skb)
diff --git a/net/9p/client.c b/net/9p/client.c
index 821f1ec0b2c3..1eb580c38fbb 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -618,7 +618,7 @@ static struct p9_fid *p9_fid_create(struct p9_client *clnt)
                 return ERR_PTR(-ENOMEM);
 
         ret = p9_idpool_get(clnt->fidpool);
-        if (fid->fid < 0) {
+        if (ret < 0) {
                 ret = -ENOSPC;
                 goto error;
         }
diff --git a/net/Kconfig b/net/Kconfig
index bf2776018f71..cdb8fdef6c4a 100644
--- a/net/Kconfig
+++ b/net/Kconfig
@@ -24,14 +24,6 @@ if NET
 
 menu "Networking options"
 
-config NET_NS
-        bool "Network namespace support"
-        default n
-        depends on EXPERIMENTAL && NAMESPACES
-        help
-          Allow user space to create what appear to be multiple instances
-          of the network stack.
-
 config COMPAT_NET_DEV_OPS
        def_bool y
 
diff --git a/net/core/dev.c b/net/core/dev.c
index 8d675975d85b..5379b0c1190a 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1534,7 +1534,19 @@ struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features)
         skb->mac_len = skb->network_header - skb->mac_header;
         __skb_pull(skb, skb->mac_len);
 
-        if (WARN_ON(skb->ip_summed != CHECKSUM_PARTIAL)) {
+        if (unlikely(skb->ip_summed != CHECKSUM_PARTIAL)) {
+                struct net_device *dev = skb->dev;
+                struct ethtool_drvinfo info = {};
+
+                if (dev && dev->ethtool_ops && dev->ethtool_ops->get_drvinfo)
+                        dev->ethtool_ops->get_drvinfo(dev, &info);
+
+                WARN(1, "%s: caps=(0x%lx, 0x%lx) len=%d data_len=%d "
+                        "ip_summed=%d",
+                     info.driver, dev ? dev->features : 0L,
+                     skb->sk ? skb->sk->sk_route_caps : 0L,
+                     skb->len, skb->data_len, skb->ip_summed);
+
                 if (skb_header_cloned(skb) &&
                     (err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC)))
                         return ERR_PTR(err);
@@ -2524,6 +2536,7 @@ struct sk_buff *napi_fraginfo_skb(struct napi_struct *napi,
 
         if (!pskb_may_pull(skb, ETH_HLEN)) {
                 napi_reuse_skb(napi, skb);
+                skb = NULL;
                 goto out;
         }
 
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index 55cffad2f328..55151faaf90c 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -341,8 +341,8 @@ again:
         rv = register_pernet_operations(first_device, ops);
         if (rv < 0)
                 ida_remove(&net_generic_ids, *id);
-        mutex_unlock(&net_mutex);
 out:
+        mutex_unlock(&net_mutex);
         return rv;
 }
 EXPORT_SYMBOL_GPL(register_pernet_gen_subsys);
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 65eac7739033..2e5f2ca3bdcd 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -73,17 +73,13 @@ static struct kmem_cache *skbuff_fclone_cache __read_mostly;
 static void sock_pipe_buf_release(struct pipe_inode_info *pipe,
                                   struct pipe_buffer *buf)
 {
-        struct sk_buff *skb = (struct sk_buff *) buf->private;
-
-        kfree_skb(skb);
+        put_page(buf->page);
 }
 
 static void sock_pipe_buf_get(struct pipe_inode_info *pipe,
                                 struct pipe_buffer *buf)
 {
-        struct sk_buff *skb = (struct sk_buff *) buf->private;
-
-        skb_get(skb);
+        get_page(buf->page);
 }
 
 static int sock_pipe_buf_steal(struct pipe_inode_info *pipe,
@@ -1334,9 +1330,19 @@ fault:
  */
 static void sock_spd_release(struct splice_pipe_desc *spd, unsigned int i)
 {
-        struct sk_buff *skb = (struct sk_buff *) spd->partial[i].private;
+        put_page(spd->pages[i]);
+}
 
-        kfree_skb(skb);
+static inline struct page *linear_to_page(struct page *page, unsigned int len,
+                                          unsigned int offset)
+{
+        struct page *p = alloc_pages(GFP_KERNEL, 0);
+
+        if (!p)
+                return NULL;
+        memcpy(page_address(p) + offset, page_address(page) + offset, len);
+
+        return p;
 }
 
 /*
@@ -1344,16 +1350,23 @@ static void sock_spd_release(struct splice_pipe_desc *spd, unsigned int i)
  */
 static inline int spd_fill_page(struct splice_pipe_desc *spd, struct page *page,
                                 unsigned int len, unsigned int offset,
-                                struct sk_buff *skb)
+                                struct sk_buff *skb, int linear)
 {
         if (unlikely(spd->nr_pages == PIPE_BUFFERS))
                 return 1;
 
+        if (linear) {
+                page = linear_to_page(page, len, offset);
+                if (!page)
+                        return 1;
+        } else
+                get_page(page);
+
         spd->pages[spd->nr_pages] = page;
         spd->partial[spd->nr_pages].len = len;
         spd->partial[spd->nr_pages].offset = offset;
-        spd->partial[spd->nr_pages].private = (unsigned long) skb_get(skb);
         spd->nr_pages++;
+
         return 0;
 }
 
@@ -1369,7 +1382,7 @@ static inline void __segment_seek(struct page **page, unsigned int *poff,
 static inline int __splice_segment(struct page *page, unsigned int poff,
                                    unsigned int plen, unsigned int *off,
                                    unsigned int *len, struct sk_buff *skb,
-                                   struct splice_pipe_desc *spd)
+                                   struct splice_pipe_desc *spd, int linear)
 {
         if (!*len)
                 return 1;
@@ -1392,7 +1405,7 @@ static inline int __splice_segment(struct page *page, unsigned int poff,
                 /* the linear region may spread across several pages  */
                 flen = min_t(unsigned int, flen, PAGE_SIZE - poff);
 
-                if (spd_fill_page(spd, page, flen, poff, skb))
+                if (spd_fill_page(spd, page, flen, poff, skb, linear))
                         return 1;
 
                 __segment_seek(&page, &poff, &plen, flen);
@@ -1419,7 +1432,7 @@ static int __skb_splice_bits(struct sk_buff *skb, unsigned int *offset,
         if (__splice_segment(virt_to_page(skb->data),
                              (unsigned long) skb->data & (PAGE_SIZE - 1),
                              skb_headlen(skb),
-                             offset, len, skb, spd))
+                             offset, len, skb, spd, 1))
                 return 1;
 
         /*
@@ -1429,7 +1442,7 @@ static int __skb_splice_bits(struct sk_buff *skb, unsigned int *offset,
                 const skb_frag_t *f = &skb_shinfo(skb)->frags[seg];
 
                 if (__splice_segment(f->page, f->page_offset, f->size,
-                                     offset, len, skb, spd))
+                                     offset, len, skb, spd, 0))
                         return 1;
         }
 
@@ -1442,7 +1455,7 @@ static int __skb_splice_bits(struct sk_buff *skb, unsigned int *offset,
  * the frag list, if such a thing exists. We'd probably need to recurse to
  * handle that cleanly.
  */
-int skb_splice_bits(struct sk_buff *__skb, unsigned int offset,
+int skb_splice_bits(struct sk_buff *skb, unsigned int offset,
                     struct pipe_inode_info *pipe, unsigned int tlen,
                     unsigned int flags)
 {
@@ -1455,16 +1468,6 @@ int skb_splice_bits(struct sk_buff *__skb, unsigned int offset,
                 .ops = &sock_pipe_buf_ops,
                 .spd_release = sock_spd_release,
         };
-        struct sk_buff *skb;
-
-        /*
-         * I'd love to avoid the clone here, but tcp_read_sock()
-         * ignores reference counts and unconditonally kills the sk_buff
-         * on return from the actor.
-         */
-        skb = skb_clone(__skb, GFP_KERNEL);
-        if (unlikely(!skb))
-                return -ENOMEM;
 
         /*
          * __skb_splice_bits() only fails if the output has no room left,
@@ -1488,15 +1491,9 @@ int skb_splice_bits(struct sk_buff *__skb, unsigned int offset,
         }
 
 done:
-        /*
-         * drop our reference to the clone, the pipe consumption will
-         * drop the rest.
-         */
-        kfree_skb(skb);
-
         if (spd.nr_pages) {
+                struct sock *sk = skb->sk;
                 int ret;
-                struct sock *sk = __skb->sk;
 
                 /*
                  * Drop the socket lock, otherwise we have reverse
@@ -2588,8 +2585,9 @@ int skb_gro_receive(struct sk_buff **head, struct sk_buff *skb)
         struct sk_buff *nskb;
         unsigned int headroom;
         unsigned int hlen = p->data - skb_mac_header(p);
+        unsigned int len = skb->len;
 
-        if (hlen + p->len + skb->len >= 65536)
+        if (hlen + p->len + len >= 65536)
                 return -E2BIG;
 
         if (skb_shinfo(p)->frag_list)
@@ -2651,9 +2649,9 @@ merge:
 
 done:
         NAPI_GRO_CB(p)->count++;
-        p->data_len += skb->len;
-        p->truesize += skb->len;
-        p->len += skb->len;
+        p->data_len += len;
+        p->truesize += len;
+        p->len += len;
 
         NAPI_GRO_CB(skb)->same_flow = 1;
         return 0;
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 94f74f5b0cbf..c802bc1658a8 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -797,6 +797,7 @@ static struct sk_buff **ipv6_gro_receive(struct sk_buff **head,
         unsigned int nlen;
         int flush = 1;
         int proto;
+        __wsum csum;
 
         if (unlikely(!pskb_may_pull(skb, sizeof(*iph))))
                 goto out;
@@ -808,6 +809,7 @@ static struct sk_buff **ipv6_gro_receive(struct sk_buff **head,
 
         rcu_read_lock();
         proto = ipv6_gso_pull_exthdrs(skb, iph->nexthdr);
+        iph = ipv6_hdr(skb);
         IPV6_GRO_CB(skb)->proto = proto;
         ops = rcu_dereference(inet6_protos[proto]);
         if (!ops || !ops->gro_receive)
@@ -839,8 +841,13 @@ static struct sk_buff **ipv6_gro_receive(struct sk_buff **head,
 
         NAPI_GRO_CB(skb)->flush |= flush;
 
+        csum = skb->csum;
+        skb_postpull_rcsum(skb, iph, skb_network_header_len(skb));
+
         pp = ops->gro_receive(head, skb);
 
+        skb->csum = csum;
+
 out_unlock:
         rcu_read_unlock();
 
diff --git a/net/key/af_key.c b/net/key/af_key.c
index f8bd8df5e257..7dcbde3ea7d9 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -1285,6 +1285,7 @@ static struct xfrm_state * pfkey_msg2xfrm_state(struct net *net,
                                 ext_hdrs[SADB_X_EXT_NAT_T_DPORT-1];
                         natt->encap_dport = n_port->sadb_x_nat_t_port_port;
                 }
+                memset(&natt->encap_oa, 0, sizeof(natt->encap_oa));
         }
 
         err = xfrm_init_state(x);
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 5ba721b6a399..2b890af01ba4 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -620,8 +620,8 @@ static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
         if (use_short_slot != bss_conf->use_short_slot) {
 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
                 if (net_ratelimit()) {
-                        printk(KERN_DEBUG "%s: switched to %s slot"
-                               " (BSSID=%s)\n",
+                        printk(KERN_DEBUG "%s: switched to %s slot time"
+                               " (BSSID=%pM)\n",
                                sdata->dev->name,
                                use_short_slot ? "short" : "long",
                                ifsta->bssid);
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index dc2606d0ae77..e49a5b99cf10 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -195,7 +195,6 @@ struct sta_ampdu_mlme {
  * @tx_packets: number of RX/TX MSDUs
  * @tx_bytes: number of bytes transmitted to this STA
  * @tx_fragments: number of transmitted MPDUs
- * @last_txrate: description of the last used transmit rate
  * @tid_seq: per-TID sequence numbers for sending to this STA
  * @ampdu_mlme: A-MPDU state machine state
  * @timer_to_tid: identity mapping to ID timers
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index a4af3a124cce..4278e545638f 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1307,8 +1307,10 @@ int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev)
                 if (is_multicast_ether_addr(hdr->addr3))
                         memcpy(hdr->addr1, hdr->addr3, ETH_ALEN);
                 else
-                        if (mesh_nexthop_lookup(skb, osdata))
-                                return  0;
+                        if (mesh_nexthop_lookup(skb, osdata)) {
+                                dev_put(odev);
+                                return 0;
+                        }
                 if (memcmp(odev->dev_addr, hdr->addr4, ETH_ALEN) != 0)
                         IEEE80211_IFSTA_MESH_CTR_INC(&osdata->u.mesh,
                                                             fwded_frames);
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index 3dddec6d2f7e..c32a7e8e3a1b 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -831,13 +831,16 @@ ctnetlink_parse_nat_setup(struct nf_conn *ct,
         if (!parse_nat_setup) {
 #ifdef CONFIG_MODULES
                 rcu_read_unlock();
+                spin_unlock_bh(&nf_conntrack_lock);
                 nfnl_unlock();
                 if (request_module("nf-nat-ipv4") < 0) {
                         nfnl_lock();
+                        spin_lock_bh(&nf_conntrack_lock);
                         rcu_read_lock();
                         return -EOPNOTSUPP;
                 }
                 nfnl_lock();
+                spin_lock_bh(&nf_conntrack_lock);
                 rcu_read_lock();
                 if (nfnetlink_parse_nat_setup_hook)
                         return -EAGAIN;
diff --git a/net/sctp/input.c b/net/sctp/input.c
index bf612d954d41..2e4a8646dbc3 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -249,6 +249,19 @@ int sctp_rcv(struct sk_buff *skb)
          */
         sctp_bh_lock_sock(sk);
 
+        if (sk != rcvr->sk) {
+                /* Our cached sk is different from the rcvr->sk.  This is
+                 * because migrate()/accept() may have moved the association
+                 * to a new socket and released all the sockets.  So now we
+                 * are holding a lock on the old socket while the user may
+                 * be doing something with the new socket.  Switch our veiw
+                 * of the current sk.
+                 */
+                sctp_bh_unlock_sock(sk);
+                sk = rcvr->sk;
+                sctp_bh_lock_sock(sk);
+        }
+
         if (sock_owned_by_user(sk)) {
                 SCTP_INC_STATS_BH(SCTP_MIB_IN_PKT_BACKLOG);
                 sctp_add_backlog(sk, skb);
diff --git a/net/sctp/output.c b/net/sctp/output.c
index c3f417f7ec6e..73639355157e 100644
--- a/net/sctp/output.c
+++ b/net/sctp/output.c
@@ -324,14 +324,16 @@ append:
         switch (chunk->chunk_hdr->type) {
             case SCTP_CID_DATA:
                 retval = sctp_packet_append_data(packet, chunk);
+                if (SCTP_XMIT_OK != retval)
+                        goto finish;
                 /* Disallow SACK bundling after DATA. */
                 packet->has_sack = 1;
                 /* Disallow AUTH bundling after DATA */
                 packet->has_auth = 1;
                 /* Let it be knows that packet has DATA in it */
                 packet->has_data = 1;
-                if (SCTP_XMIT_OK != retval)
-                        goto finish;
+                /* timestamp the chunk for rtx purposes */
+                chunk->sent_at = jiffies;
                 break;
             case SCTP_CID_COOKIE_ECHO:
                 packet->has_cookie_echo = 1;
@@ -470,7 +472,6 @@ int sctp_packet_transmit(struct sctp_packet *packet)
                         } else
                                 chunk->resent = 1;
 
-                        chunk->sent_at = jiffies;
                         has_data = 1;
                 }
 
diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
index 247ebc95c1e5..bc411c896216 100644
--- a/net/sctp/outqueue.c
+++ b/net/sctp/outqueue.c
@@ -929,7 +929,6 @@ static int sctp_outq_flush(struct sctp_outq *q, int rtx_timeout)
                 }
 
                 /* Finally, transmit new packets.  */
-                start_timer = 0;
                 while ((chunk = sctp_outq_dequeue_data(q)) != NULL) {
                         /* RFC 2960 6.5 Every DATA chunk MUST carry a valid
                          * stream identifier.
@@ -1028,7 +1027,7 @@ static int sctp_outq_flush(struct sctp_outq *q, int rtx_timeout)
                         list_add_tail(&chunk->transmitted_list,
                                       &transport->transmitted);
 
-                        sctp_transport_reset_timers(transport, start_timer-1);
+                        sctp_transport_reset_timers(transport, 0);
 
                         q->empty = 0;
 
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 4f877535e666..bc494cef2102 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -421,6 +421,31 @@ static u32 freq_max_bandwidth(const struct ieee80211_freq_range *freq_range,
         return 0;
 }
 
+/**
+ * freq_in_rule_band - tells us if a frequency is in a frequency band
+ * @freq_range: frequency rule we want to query
+ * @freq_khz: frequency we are inquiring about
+ *
+ * This lets us know if a specific frequency rule is or is not relevant to
+ * a specific frequency's band. Bands are device specific and artificial
+ * definitions (the "2.4 GHz band" and the "5 GHz band"), however it is
+ * safe for now to assume that a frequency rule should not be part of a
+ * frequency's band if the start freq or end freq are off by more than 2 GHz.
+ * This resolution can be lowered and should be considered as we add
+ * regulatory rule support for other "bands".
+ **/
+static bool freq_in_rule_band(const struct ieee80211_freq_range *freq_range,
+        u32 freq_khz)
+{
+#define ONE_GHZ_IN_KHZ  1000000
+        if (abs(freq_khz - freq_range->start_freq_khz) <= (2 * ONE_GHZ_IN_KHZ))
+                return true;
+        if (abs(freq_khz - freq_range->end_freq_khz) <= (2 * ONE_GHZ_IN_KHZ))
+                return true;
+        return false;
+#undef ONE_GHZ_IN_KHZ
+}
+
 /* Converts a country IE to a regulatory domain. A regulatory domain
  * structure has a lot of information which the IE doesn't yet have,
  * so for the other values we use upper max values as we will intersect
@@ -538,6 +563,7 @@ static struct ieee80211_regdomain *country_ie_2_rd(
 
         /* This time around we fill in the rd */
         while (country_ie_len >= 3) {
+                int end_channel = 0;
                 struct ieee80211_country_ie_triplet *triplet =
                         (struct ieee80211_country_ie_triplet *) country_ie;
                 struct ieee80211_reg_rule *reg_rule = NULL;
@@ -559,6 +585,23 @@ static struct ieee80211_regdomain *country_ie_2_rd(
 
                 reg_rule->flags = flags;
 
+                /* 2 GHz */
+                if (triplet->chans.first_channel <= 14)
+                        end_channel = triplet->chans.first_channel +
+                                triplet->chans.num_channels;
+                else
+                        /*
+                         * 5 GHz -- For example in country IEs if the first
+                         * channel given is 36 and the number of channels is 4
+                         * then the individual channel numbers defined for the
+                         * 5 GHz PHY by these parameters are: 36, 40, 44, and 48
+                         * and not 36, 37, 38, 39.
+                         *
+                         * See: http://tinyurl.com/11d-clarification
+                         */
+                        end_channel =  triplet->chans.first_channel +
+                                (4 * (triplet->chans.num_channels - 1));
+
                 /* The +10 is since the regulatory domain expects
                  * the actual band edge, not the center of freq for
                  * its start and end freqs, assuming 20 MHz bandwidth on
@@ -568,8 +611,7 @@ static struct ieee80211_regdomain *country_ie_2_rd(
                                 triplet->chans.first_channel) - 10);
                 freq_range->end_freq_khz =
                         MHZ_TO_KHZ(ieee80211_channel_to_frequency(
-                                triplet->chans.first_channel +
-                                        triplet->chans.num_channels) + 10);
+                                end_channel) + 10);
 
                 /* Large arbitrary values, we intersect later */
                 /* Increment this if we ever support >= 40 MHz channels
@@ -748,12 +790,23 @@ static u32 map_regdom_flags(u32 rd_flags)
  *      this value to the maximum allowed bandwidth.
  * @reg_rule: the regulatory rule which we have for this frequency
  *
- * Use this function to get the regulatory rule for a specific frequency.
+ * Use this function to get the regulatory rule for a specific frequency on
+ * a given wireless device. If the device has a specific regulatory domain
+ * it wants to follow we respect that unless a country IE has been received
+ * and processed already.
+ *
+ * Returns 0 if it was able to find a valid regulatory rule which does
+ * apply to the given center_freq otherwise it returns non-zero. It will
+ * also return -ERANGE if we determine the given center_freq does not even have
+ * a regulatory rule for a frequency range in the center_freq's band. See
+ * freq_in_rule_band() for our current definition of a band -- this is purely
+ * subjective and right now its 802.11 specific.
  */
 static int freq_reg_info(u32 center_freq, u32 *bandwidth,
                          const struct ieee80211_reg_rule **reg_rule)
 {
         int i;
+        bool band_rule_found = false;
         u32 max_bandwidth = 0;
 
         if (!cfg80211_regdomain)
@@ -767,7 +820,15 @@ static int freq_reg_info(u32 center_freq, u32 *bandwidth,
                 rr = &cfg80211_regdomain->reg_rules[i];
                 fr = &rr->freq_range;
                 pr = &rr->power_rule;
+
+                /* We only need to know if one frequency rule was
+                 * was in center_freq's band, that's enough, so lets
+                 * not overwrite it once found */
+                if (!band_rule_found)
+                        band_rule_found = freq_in_rule_band(fr, center_freq);
+
                 max_bandwidth = freq_max_bandwidth(fr, center_freq);
+
                 if (max_bandwidth && *bandwidth <= max_bandwidth) {
                         *reg_rule = rr;
                         *bandwidth = max_bandwidth;
@@ -775,23 +836,64 @@ static int freq_reg_info(u32 center_freq, u32 *bandwidth,
                 }
         }
 
+        if (!band_rule_found)
+                return -ERANGE;
+
         return !max_bandwidth;
 }
 
-static void handle_channel(struct ieee80211_channel *chan)
+static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band,
+                           unsigned int chan_idx)
 {
         int r;
-        u32 flags = chan->orig_flags;
+        u32 flags;
         u32 max_bandwidth = 0;
         const struct ieee80211_reg_rule *reg_rule = NULL;
         const struct ieee80211_power_rule *power_rule = NULL;
+        struct ieee80211_supported_band *sband;
+        struct ieee80211_channel *chan;
+
+        sband = wiphy->bands[band];
+        BUG_ON(chan_idx >= sband->n_channels);
+        chan = &sband->channels[chan_idx];
+
+        flags = chan->orig_flags;
 
         r = freq_reg_info(MHZ_TO_KHZ(chan->center_freq),
                 &max_bandwidth, &reg_rule);
 
         if (r) {
-                flags |= IEEE80211_CHAN_DISABLED;
-                chan->flags = flags;
+                /* This means no regulatory rule was found in the country IE
+                 * with a frequency range on the center_freq's band, since
+                 * IEEE-802.11 allows for a country IE to have a subset of the
+                 * regulatory information provided in a country we ignore
+                 * disabling the channel unless at least one reg rule was
+                 * found on the center_freq's band. For details see this
+                 * clarification:
+                 *
+                 * http://tinyurl.com/11d-clarification
+                 */
+                if (r == -ERANGE &&
+                    last_request->initiator == REGDOM_SET_BY_COUNTRY_IE) {
+#ifdef CONFIG_CFG80211_REG_DEBUG
+                        printk(KERN_DEBUG "cfg80211: Leaving channel %d MHz "
+                                "intact on %s - no rule found in band on "
+                                "Country IE\n",
+                                chan->center_freq, wiphy_name(wiphy));
+#endif
+                } else {
+                /* In this case we know the country IE has at least one reg rule
+                 * for the band so we respect its band definitions */
+#ifdef CONFIG_CFG80211_REG_DEBUG
+                        if (last_request->initiator == REGDOM_SET_BY_COUNTRY_IE)
+                                printk(KERN_DEBUG "cfg80211: Disabling "
+                                        "channel %d MHz on %s due to "
+                                        "Country IE\n",
+                                        chan->center_freq, wiphy_name(wiphy));
+#endif
+                        flags |= IEEE80211_CHAN_DISABLED;
+                        chan->flags = flags;
+                }
                 return;
         }
 
@@ -808,12 +910,16 @@ static void handle_channel(struct ieee80211_channel *chan)
                 chan->max_power = (int) MBM_TO_DBM(power_rule->max_eirp);
 }
 
-static void handle_band(struct ieee80211_supported_band *sband)
+static void handle_band(struct wiphy *wiphy, enum ieee80211_band band)
 {
-        int i;
+        unsigned int i;
+        struct ieee80211_supported_band *sband;
+
+        BUG_ON(!wiphy->bands[band]);
+        sband = wiphy->bands[band];
 
         for (i = 0; i < sband->n_channels; i++)
-                handle_channel(&sband->channels[i]);
+                handle_channel(wiphy, band, i);
 }
 
 static bool ignore_reg_update(struct wiphy *wiphy, enum reg_set_by setby)
@@ -840,7 +946,7 @@ void wiphy_update_regulatory(struct wiphy *wiphy, enum reg_set_by setby)
         enum ieee80211_band band;
         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
                 if (wiphy->bands[band])
-                        handle_band(wiphy->bands[band]);
+                        handle_band(wiphy, band);
                 if (wiphy->reg_notifier)
                         wiphy->reg_notifier(wiphy, setby);
         }
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 7877e7975dae..b95a2d64eb59 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -1914,17 +1914,10 @@ static int xfrm_send_migrate(struct xfrm_selector *sel, u8 dir, u8 type,
 }
 #endif
 
-/* For the xfrm_usersa_info cases we have to work around some 32-bit vs.
- * 64-bit compatability issues.  On 32-bit the structure is 220 bytes, but
- * for 64-bit it gets padded out to 224 bytes.  Those bytes are just
- * padding and don't have any content we care about.  Therefore as long
- * as we have enough bytes for the content we can make both cases work.
- */
-
 #define XMSGSIZE(type) sizeof(struct type)
 
 static const int xfrm_msg_min[XFRM_NR_MSGTYPES] = {
-        [XFRM_MSG_NEWSA       - XFRM_MSG_BASE] = 220, /* see above */
+        [XFRM_MSG_NEWSA       - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_info),
         [XFRM_MSG_DELSA       - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_id),
         [XFRM_MSG_GETSA       - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_id),
         [XFRM_MSG_NEWPOLICY   - XFRM_MSG_BASE] = XMSGSIZE(xfrm_userpolicy_info),
@@ -1934,7 +1927,7 @@ static const int xfrm_msg_min[XFRM_NR_MSGTYPES] = {
         [XFRM_MSG_ACQUIRE     - XFRM_MSG_BASE] = XMSGSIZE(xfrm_user_acquire),
         [XFRM_MSG_EXPIRE      - XFRM_MSG_BASE] = XMSGSIZE(xfrm_user_expire),
         [XFRM_MSG_UPDPOLICY   - XFRM_MSG_BASE] = XMSGSIZE(xfrm_userpolicy_info),
-        [XFRM_MSG_UPDSA       - XFRM_MSG_BASE] = 220, /* see above */
+        [XFRM_MSG_UPDSA       - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_info),
         [XFRM_MSG_POLEXPIRE   - XFRM_MSG_BASE] = XMSGSIZE(xfrm_user_polexpire),
         [XFRM_MSG_FLUSHSA     - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_flush),
         [XFRM_MSG_FLUSHPOLICY - XFRM_MSG_BASE] = 0,