--- /dev/null
+--- a/Makefile
++++ b/Makefile
+@@ -3,7 +3,7 @@
+ MAKEFLAGS += --no-print-directory
+
+ PREFIX ?= /usr
+-BINDIR ?= $(PREFIX)/bin
++SBINDIR ?= $(PREFIX)/sbin
+ MANDIR ?= $(PREFIX)/share/man
+ PKG_CONFIG ?= pkg-config
+
+@@ -85,8 +85,8 @@ check:
+
+ install: iw iw.8.gz
+ @$(NQ) ' INST iw'
+- $(Q)$(MKDIR) $(DESTDIR)$(BINDIR)
+- $(Q)$(INSTALL) -m 755 -t $(DESTDIR)$(BINDIR) iw
++ $(Q)$(MKDIR) $(DESTDIR)$(SBINDIR)
++ $(Q)$(INSTALL) -m 755 -t $(DESTDIR)$(SBINDIR) iw
+ @$(NQ) ' INST iw.8'
+ $(Q)$(MKDIR) $(DESTDIR)$(MANDIR)/man8/
+ $(Q)$(INSTALL) -m 644 -t $(DESTDIR)$(MANDIR)/man8/ iw.8.gz
+--- a/iw.c
++++ b/iw.c
+@@ -223,9 +223,12 @@ static int phy_lookup(char *name)
+ if (fd < 0)
+ return -1;
+ pos = read(fd, buf, sizeof(buf) - 1);
+- if (pos < 0)
++ if (pos < 0) {
++ close(fd);
+ return -1;
++ }
+ buf[pos] = '\0';
++ close(fd);
+ return atoi(buf);
+ }
+
+--- a/nl80211.h
++++ b/nl80211.h
+@@ -262,6 +262,9 @@
+ * reasons, for this the %NL80211_ATTR_DISCONNECTED_BY_AP and
+ * %NL80211_ATTR_REASON_CODE attributes are used.
+ *
++ * @NL80211_CMD_SET_WIPHY_NETNS: Set a wiphy's netns. Note that all devices
++ * associated with this wiphy must be down and will follow.
++ *
+ * @NL80211_CMD_MAX: highest used command number
+ * @__NL80211_CMD_AFTER_LAST: internal use
+ */
+@@ -336,6 +339,8 @@ enum nl80211_commands {
+ NL80211_CMD_ROAM,
+ NL80211_CMD_DISCONNECT,
+
++ NL80211_CMD_SET_WIPHY_NETNS,
++
+ /* add new commands above here */
+
+ /* used to define NL80211_CMD_MAX below */
+@@ -475,10 +480,6 @@ enum nl80211_commands {
+ * @NL80211_ATTR_SCAN_FREQUENCIES: nested attribute with frequencies (in MHz)
+ * @NL80211_ATTR_SCAN_SSIDS: nested attribute with SSIDs, leave out for passive
+ * scanning and include a zero-length SSID (wildcard) for wildcard scan
+- * @NL80211_ATTR_SCAN_GENERATION: the scan generation increases whenever the
+- * scan result list changes (BSS expired or added) so that applications
+- * can verify that they got a single, consistent snapshot (when all dump
+- * messages carried the same generation number)
+ * @NL80211_ATTR_BSS: scan result BSS
+ *
+ * @NL80211_ATTR_REG_INITIATOR: indicates who requested the regulatory domain
+@@ -573,6 +574,16 @@ enum nl80211_commands {
+ * and join_ibss(), key information is in a nested attribute each
+ * with %NL80211_KEY_* sub-attributes
+ *
++ * @NL80211_ATTR_PID: Process ID of a network namespace.
++ *
++ * @NL80211_ATTR_GENERATION: Used to indicate consistent snapshots for
++ * dumps. This number increases whenever the object list being
++ * dumped changes, and as such userspace can verify that it has
++ * obtained a complete and consistent snapshot by verifying that
++ * all dump messages contain the same generation number. If it
++ * changed then the list changed and the dump should be repeated
++ * completely from scratch.
++ *
+ * @NL80211_ATTR_MAX: highest attribute number currently defined
+ * @__NL80211_ATTR_AFTER_LAST: internal use
+ */
+@@ -644,7 +655,7 @@ enum nl80211_attrs {
+
+ NL80211_ATTR_SCAN_FREQUENCIES,
+ NL80211_ATTR_SCAN_SSIDS,
+- NL80211_ATTR_SCAN_GENERATION,
++ NL80211_ATTR_GENERATION, /* replaces old SCAN_GENERATION */
+ NL80211_ATTR_BSS,
+
+ NL80211_ATTR_REG_INITIATOR,
+@@ -701,12 +712,17 @@ enum nl80211_attrs {
+ NL80211_ATTR_KEY,
+ NL80211_ATTR_KEYS,
+
++ NL80211_ATTR_PID,
++
+ /* add attributes here, update the policy in nl80211.c */
+
+ __NL80211_ATTR_AFTER_LAST,
+ NL80211_ATTR_MAX = __NL80211_ATTR_AFTER_LAST - 1
+ };
+
++/* source-level API compatibility */
++#define NL80211_ATTR_SCAN_GENERATION NL80211_ATTR_GENERATION
++
+ /*
+ * Allow user space programs to use #ifdef on new attributes by defining them
+ * here
+--- a/phy.c
++++ b/phy.c
+@@ -140,3 +140,27 @@ static int handle_rts(struct nl80211_sta
+ COMMAND(set, rts, "<rts threshold|off>",
+ NL80211_CMD_SET_WIPHY, 0, CIB_PHY, handle_rts,
+ "Set rts threshold.");
++
++static int handle_netns(struct nl80211_state *state,
++ struct nl_cb *cb,
++ struct nl_msg *msg,
++ int argc, char **argv)
++{
++ char *end;
++
++ if (argc != 1)
++ return 1;
++
++ NLA_PUT_U32(msg, NL80211_ATTR_PID,
++ strtoul(argv[0], &end, 10));
++
++ if (*end != '\0')
++ return 1;
++
++ return 0;
++ nla_put_failure:
++ return -ENOBUFS;
++}
++COMMAND(set, netns, "<pid>",
++ NL80211_CMD_SET_WIPHY_NETNS, 0, CIB_PHY, handle_netns,
++ "Put this wireless device into a different network namespace");
+--- a/station.c
++++ b/station.c
+@@ -127,7 +127,7 @@ static int print_sta_handler(struct nl_m
+ printf("\n\tmesh plid:\t%d",
+ nla_get_u16(sinfo[NL80211_STA_INFO_PLID]));
+ if (sinfo[NL80211_STA_INFO_PLINK_STATE]) {
+- switch (nla_get_u16(sinfo[NL80211_STA_INFO_PLINK_STATE])) {
++ switch (nla_get_u8(sinfo[NL80211_STA_INFO_PLINK_STATE])) {
+ case LISTEN:
+ strcpy(state_name, "LISTEN");
+ break;
--- /dev/null
+--- a/interface.c
++++ b/interface.c
+@@ -137,6 +137,20 @@ static int get_if_type(int *argc, char *
+ return 2;
+ }
+
++static int parse_wds_flag(const char *value, struct nl_msg *msg)
++{
++ if (strcmp(value, "on") == 0)
++ NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, 1);
++ else if (strcmp(value, "off") == 0)
++ NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, 0);
++ else
++ return 1;
++ return 0;
++
++nla_put_failure:
++ return 1;
++}
++
+ static int handle_interface_add(struct nl80211_state *state,
+ struct nl_cb *cb,
+ struct nl_msg *msg,
+@@ -168,6 +182,15 @@ static int handle_interface_add(struct n
+ mesh_id = argv[0];
+ argc--;
+ argv++;
++ } else if (strcmp(argv[0], "wds") == 0) {
++ argc--;
++ argv++;
++ if (parse_wds_flag(argv[0], msg)) {
++ fprintf(stderr, "wds error\n");
++ return 2;
++ }
++ argc--;
++ argv++;
+ } else if (strcmp(argv[0], "flags") == 0) {
+ argc--;
+ argv++;
+@@ -192,14 +215,14 @@ static int handle_interface_add(struct n
+ nla_put_failure:
+ return -ENOBUFS;
+ }
+-COMMAND(interface, add, "<name> type <type> [mesh_id <meshid>] [flags <flag>*]",
++COMMAND(interface, add, "<name> type <type> [mesh_id <meshid>] [wds on|off] [flags <flag>*]",
+ NL80211_CMD_NEW_INTERFACE, 0, CIB_PHY, handle_interface_add,
+ "Add a new virtual interface with the given configuration.\n"
+ IFACE_TYPES "\n\n"
+ "The flags are only used for monitor interfaces, valid flags are:\n"
+ VALID_FLAGS "\n\n"
+ "The mesh_id is used only for mesh mode.");
+-COMMAND(interface, add, "<name> type <type> [mesh_id <meshid>] [flags <flag>*]",
++COMMAND(interface, add, "<name> type <type> [mesh_id <meshid>] [wds on|off] [flags <flag>*]",
+ NL80211_CMD_NEW_INTERFACE, 0, CIB_NETDEV, handle_interface_add, NULL);
+
+ static int handle_interface_del(struct nl80211_state *state,
+--- a/nl80211.h
++++ b/nl80211.h
+@@ -584,6 +584,8 @@ enum nl80211_commands {
+ * changed then the list changed and the dump should be repeated
+ * completely from scratch.
+ *
++ * @NL80211_ATTR_4ADDR: Use 4-address frames on a virtual interface
++ *
+ * @NL80211_ATTR_MAX: highest attribute number currently defined
+ * @__NL80211_ATTR_AFTER_LAST: internal use
+ */
+@@ -714,6 +716,8 @@ enum nl80211_attrs {
+
+ NL80211_ATTR_PID,
+
++ NL80211_ATTR_4ADDR,
++
+ /* add attributes here, update the policy in nl80211.c */
+
+ __NL80211_ATTR_AFTER_LAST,
--- /dev/null
+--- a/station.c
++++ b/station.c
+@@ -196,7 +196,7 @@ COMMAND(station, del, "<MAC address>",
+ NL80211_CMD_DEL_STATION, 0, CIB_NETDEV, handle_station_get,
+ "Remove the given station entry (use with caution!)");
+
+-static int handle_station_set(struct nl80211_state *state,
++static int handle_station_set_plink(struct nl80211_state *state,
+ struct nl_cb *cb,
+ struct nl_msg *msg,
+ int argc, char **argv)
+@@ -241,9 +241,56 @@ static int handle_station_set(struct nl8
+ return -ENOBUFS;
+ }
+ COMMAND(station, set, "<MAC address> plink_action <open|block>",
+- NL80211_CMD_SET_STATION, 0, CIB_NETDEV, handle_station_set,
++ NL80211_CMD_SET_STATION, 0, CIB_NETDEV, handle_station_set_plink,
+ "Set mesh peer link action for this station (peer).");
+
++static int handle_station_set_vlan(struct nl80211_state *state,
++ struct nl_cb *cb,
++ struct nl_msg *msg,
++ int argc, char **argv)
++{
++ unsigned char mac_addr[ETH_ALEN];
++ unsigned long sta_vlan = 0;
++ char *err = NULL;
++
++ if (argc < 3)
++ return 1;
++
++ if (mac_addr_a2n(mac_addr, argv[0])) {
++ fprintf(stderr, "invalid mac address\n");
++ return 2;
++ }
++ argc--;
++ argv++;
++
++ if (strcmp("vlan", argv[0]) != 0)
++ return 1;
++ argc--;
++ argv++;
++
++ sta_vlan = strtoul(argv[0], &err, 0);
++ if (err && *err) {
++ fprintf(stderr, "invalid vlan id\n");
++ return 2;
++ }
++ argc--;
++ argv++;
++
++ if (argc)
++ return 1;
++
++ NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
++ NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN, sta_vlan);
++
++ return 0;
++ nla_put_failure:
++ return -ENOBUFS;
++}
++COMMAND(station, set, "<MAC address> vlan <ifindex>",
++ NL80211_CMD_SET_STATION, 0, CIB_NETDEV, handle_station_set_vlan,
++ "Set an AP VLAN for this station.");
++
++
+ static int handle_station_dump(struct nl80211_state *state,
+ struct nl_cb *cb,
+ struct nl_msg *msg,
config_get enc "$vif" encryption
config_get mode "$vif" mode
config_get ssid "$vif" ssid
+ config_get_bool wds "$vif" wds 0
# It is far easier to delete and create the desired interface
case "$mode" in
iw phy "$phy" interface add "$ifname" type monitor
;;
sta)
- iw phy "$phy" interface add "$ifname" type managed
+ local wdsflag
+ [ "$wds" -gt 0 ] && wdsflag="wds on"
+ iw phy "$phy" interface add "$ifname" type managed $wdsflag
;;
esac
--- /dev/null
+--- a/include/linux/nl80211.h
++++ b/include/linux/nl80211.h
+@@ -584,6 +584,8 @@ enum nl80211_commands {
+ * changed then the list changed and the dump should be repeated
+ * completely from scratch.
+ *
++ * @NL80211_ATTR_4ADDR: Use 4-address frames on a virtual interface
++ *
+ * @NL80211_ATTR_MAX: highest attribute number currently defined
+ * @__NL80211_ATTR_AFTER_LAST: internal use
+ */
+@@ -714,6 +716,8 @@ enum nl80211_attrs {
+
+ NL80211_ATTR_PID,
+
++ NL80211_ATTR_4ADDR,
++
+ /* add attributes here, update the policy in nl80211.c */
+
+ __NL80211_ATTR_AFTER_LAST,
+--- a/include/net/cfg80211.h
++++ b/include/net/cfg80211.h
+@@ -207,10 +207,12 @@ struct ieee80211_supported_band {
+ * struct vif_params - describes virtual interface parameters
+ * @mesh_id: mesh ID to use
+ * @mesh_id_len: length of the mesh ID
++ * @use_4addr: use 4-address frames
+ */
+ struct vif_params {
+ u8 *mesh_id;
+ int mesh_id_len;
++ int use_4addr;
+ };
+
+ /**
+--- a/net/wireless/nl80211.c
++++ b/net/wireless/nl80211.c
+@@ -140,6 +140,7 @@ static struct nla_policy nl80211_policy[
+ [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
+ [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
+ [NL80211_ATTR_PID] = { .type = NLA_U32 },
++ [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
+ };
+
+ /* policy for the attributes */
+@@ -989,6 +990,13 @@ static int nl80211_set_interface(struct
+ change = true;
+ }
+
++ if (info->attrs[NL80211_ATTR_4ADDR]) {
++ params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
++ change = true;
++ } else {
++ params.use_4addr = -1;
++ }
++
+ if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
+ if (ntype != NL80211_IFTYPE_MONITOR) {
+ err = -EINVAL;
+@@ -1055,6 +1063,9 @@ static int nl80211_new_interface(struct
+ params.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
+ }
+
++ if (info->attrs[NL80211_ATTR_4ADDR])
++ params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
++
+ err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
+ info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
+ &flags);
--- /dev/null
+--- a/net/mac80211/ieee80211_i.h
++++ b/net/mac80211/ieee80211_i.h
+@@ -208,6 +208,9 @@ struct ieee80211_if_wds {
+
+ struct ieee80211_if_vlan {
+ struct list_head list;
++
++ /* used for all tx if the VLAN is configured to 4-addr mode */
++ struct sta_info *sta;
+ };
+
+ struct mesh_stats {
+@@ -457,6 +460,8 @@ struct ieee80211_sub_if_data {
+ int force_unicast_rateidx; /* forced TX rateidx for unicast frames */
+ int max_ratectrl_rateidx; /* max TX rateidx for rate control */
+
++ bool use_4addr; /* use 4-address frames */
++
+ union {
+ struct ieee80211_if_ap ap;
+ struct ieee80211_if_wds wds;
+--- a/net/mac80211/cfg.c
++++ b/net/mac80211/cfg.c
+@@ -36,6 +36,24 @@ static bool nl80211_type_check(enum nl80
+ }
+ }
+
++static bool nl80211_params_check(enum nl80211_iftype type,
++ struct vif_params *params)
++{
++ if (!nl80211_type_check(type))
++ return false;
++
++ if (params->use_4addr > 0) {
++ switch(type) {
++ case NL80211_IFTYPE_AP_VLAN:
++ case NL80211_IFTYPE_STATION:
++ break;
++ default:
++ return false;
++ }
++ }
++ return true;
++}
++
+ static int ieee80211_add_iface(struct wiphy *wiphy, char *name,
+ enum nl80211_iftype type, u32 *flags,
+ struct vif_params *params)
+@@ -45,7 +63,7 @@ static int ieee80211_add_iface(struct wi
+ struct ieee80211_sub_if_data *sdata;
+ int err;
+
+- if (!nl80211_type_check(type))
++ if (!nl80211_params_check(type, params))
+ return -EINVAL;
+
+ err = ieee80211_if_add(local, name, &dev, type, params);
+@@ -75,7 +93,7 @@ static int ieee80211_change_iface(struct
+ if (netif_running(dev))
+ return -EBUSY;
+
+- if (!nl80211_type_check(type))
++ if (!nl80211_params_check(type, params))
+ return -EINVAL;
+
+ sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+@@ -89,6 +107,9 @@ static int ieee80211_change_iface(struct
+ params->mesh_id_len,
+ params->mesh_id);
+
++ if (params->use_4addr >= 0)
++ sdata->use_4addr = !!params->use_4addr;
++
+ if (sdata->vif.type != NL80211_IFTYPE_MONITOR || !flags)
+ return 0;
+
+@@ -806,6 +827,13 @@ static int ieee80211_change_station(stru
+ return -EINVAL;
+ }
+
++ if (vlansdata->use_4addr) {
++ if (vlansdata->u.vlan.sta)
++ return -EBUSY;
++
++ rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
++ }
++
+ sta->sdata = vlansdata;
+ ieee80211_send_layer2_update(sta);
+ }
+--- a/net/mac80211/sta_info.c
++++ b/net/mac80211/sta_info.c
+@@ -489,6 +489,9 @@ static void __sta_info_unlink(struct sta
+ local->num_sta--;
+ local->sta_generation++;
+
++ if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
++ rcu_assign_pointer(sdata->u.vlan.sta, NULL);
++
+ if (local->ops->sta_notify) {
+ if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
+ sdata = container_of(sdata->bss,
+--- a/net/mac80211/tx.c
++++ b/net/mac80211/tx.c
+@@ -1046,7 +1046,10 @@ ieee80211_tx_prepare(struct ieee80211_su
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+
+- tx->sta = sta_info_get(local, hdr->addr1);
++ if ((sdata->vif.type == NL80211_IFTYPE_AP_VLAN) && sdata->use_4addr)
++ tx->sta = rcu_dereference(sdata->u.vlan.sta);
++ if (!tx->sta)
++ tx->sta = sta_info_get(local, hdr->addr1);
+
+ if (tx->sta && ieee80211_is_data_qos(hdr->frame_control) &&
+ (local->hw.flags & IEEE80211_HW_AMPDU_AGGREGATION)) {
+@@ -1608,7 +1611,7 @@ netdev_tx_t ieee80211_subif_start_xmit(s
+ const u8 *encaps_data;
+ int encaps_len, skip_header_bytes;
+ int nh_pos, h_pos;
+- struct sta_info *sta;
++ struct sta_info *sta = NULL;
+ u32 sta_flags = 0;
+
+ if (unlikely(skb->len < ETH_HLEN)) {
+@@ -1625,8 +1628,25 @@ netdev_tx_t ieee80211_subif_start_xmit(s
+ fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA);
+
+ switch (sdata->vif.type) {
+- case NL80211_IFTYPE_AP:
+ case NL80211_IFTYPE_AP_VLAN:
++ rcu_read_lock();
++ if (sdata->use_4addr)
++ sta = rcu_dereference(sdata->u.vlan.sta);
++ if (sta) {
++ fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
++ /* RA TA DA SA */
++ memcpy(hdr.addr1, sta->sta.addr, ETH_ALEN);
++ memcpy(hdr.addr2, dev->dev_addr, ETH_ALEN);
++ memcpy(hdr.addr3, skb->data, ETH_ALEN);
++ memcpy(hdr.addr4, skb->data + ETH_ALEN, ETH_ALEN);
++ hdrlen = 30;
++ sta_flags = get_sta_flags(sta);
++ }
++ rcu_read_unlock();
++ if (sta)
++ break;
++ /* fall through */
++ case NL80211_IFTYPE_AP:
+ fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS);
+ /* DA BSSID SA */
+ memcpy(hdr.addr1, skb->data, ETH_ALEN);
+@@ -1700,12 +1720,21 @@ netdev_tx_t ieee80211_subif_start_xmit(s
+ break;
+ #endif
+ case NL80211_IFTYPE_STATION:
+- fc |= cpu_to_le16(IEEE80211_FCTL_TODS);
+- /* BSSID SA DA */
+ memcpy(hdr.addr1, sdata->u.mgd.bssid, ETH_ALEN);
+- memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN);
+- memcpy(hdr.addr3, skb->data, ETH_ALEN);
+- hdrlen = 24;
++ if (sdata->use_4addr && ethertype != ETH_P_PAE) {
++ fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
++ /* RA TA DA SA */
++ memcpy(hdr.addr2, dev->dev_addr, ETH_ALEN);
++ memcpy(hdr.addr3, skb->data, ETH_ALEN);
++ memcpy(hdr.addr4, skb->data + ETH_ALEN, ETH_ALEN);
++ hdrlen = 30;
++ } else {
++ fc |= cpu_to_le16(IEEE80211_FCTL_TODS);
++ /* BSSID SA DA */
++ memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN);
++ memcpy(hdr.addr3, skb->data, ETH_ALEN);
++ hdrlen = 24;
++ }
+ break;
+ case NL80211_IFTYPE_ADHOC:
+ /* DA SA BSSID */
+--- a/net/mac80211/iface.c
++++ b/net/mac80211/iface.c
+@@ -772,6 +772,7 @@ int ieee80211_if_change_type(struct ieee
+ ieee80211_mandatory_rates(sdata->local,
+ sdata->local->hw.conf.channel->band);
+ sdata->drop_unencrypted = 0;
++ sdata->use_4addr = 0;
+
+ return 0;
+ }
+@@ -853,6 +854,9 @@ int ieee80211_if_add(struct ieee80211_lo
+ params->mesh_id_len,
+ params->mesh_id);
+
++ if (params && params->use_4addr >= 0)
++ sdata->use_4addr = !!params->use_4addr;
++
+ mutex_lock(&local->iflist_mtx);
+ list_add_tail_rcu(&sdata->list, &local->interfaces);
+ mutex_unlock(&local->iflist_mtx);
+--- a/net/mac80211/rx.c
++++ b/net/mac80211/rx.c
+@@ -1237,6 +1237,13 @@ __ieee80211_data_to_8023(struct ieee8021
+ {
+ struct net_device *dev = rx->dev;
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
++ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;
++
++ if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN && !sdata->use_4addr &&
++ ieee80211_has_a4(hdr->frame_control))
++ return -1;
++ if (sdata->use_4addr && is_multicast_ether_addr(hdr->addr1))
++ return -1;
+
+ return ieee80211_data_to_8023(rx->skb, dev->dev_addr, sdata->vif.type);
+ }
+@@ -1590,6 +1597,7 @@ ieee80211_rx_h_data(struct ieee80211_rx_
+ {
+ struct net_device *dev = rx->dev;
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;
++ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ __le16 fc = hdr->frame_control;
+ int err;
+
+@@ -1599,6 +1607,14 @@ ieee80211_rx_h_data(struct ieee80211_rx_
+ if (unlikely(!ieee80211_is_data_present(hdr->frame_control)))
+ return RX_DROP_MONITOR;
+
++ /*
++ * Allow the cooked monitor interface of an AP to see 4-addr frames so
++ * that a 4-addr station can be detected and moved into a separate VLAN
++ */
++ if (ieee80211_has_a4(hdr->frame_control) &&
++ sdata->vif.type == NL80211_IFTYPE_AP)
++ return RX_DROP_MONITOR;
++
+ err = __ieee80211_data_to_8023(rx);
+ if (unlikely(err))
+ return RX_DROP_UNUSABLE;
+@@ -2039,7 +2055,7 @@ static int prepare_for_handlers(struct i
+
+ switch (sdata->vif.type) {
+ case NL80211_IFTYPE_STATION:
+- if (!bssid)
++ if (!bssid && !sdata->use_4addr)
+ return 0;
+ if (!multicast &&
+ compare_ether_addr(sdata->dev->dev_addr, hdr->addr1) != 0) {
+--- a/net/wireless/util.c
++++ b/net/wireless/util.c
+@@ -320,7 +320,9 @@ int ieee80211_data_to_8023(struct sk_buf
+ break;
+ case cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS):
+ if (unlikely(iftype != NL80211_IFTYPE_WDS &&
+- iftype != NL80211_IFTYPE_MESH_POINT))
++ iftype != NL80211_IFTYPE_MESH_POINT &&
++ iftype != NL80211_IFTYPE_AP_VLAN &&
++ iftype != NL80211_IFTYPE_STATION))
+ return -1;
+ if (iftype == NL80211_IFTYPE_MESH_POINT) {
+ struct ieee80211s_hdr *meshdr =
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