Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem

7 files changed, 301 insertions, 81 deletions

diff --git a/net/wireless/core.h b/net/wireless/core.h
index 124e5e773fbc..fd35dae547c4 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -88,6 +88,9 @@ struct cfg80211_registered_device {
 
         struct delayed_work dfs_update_channels_wk;
 
+        /* netlink port which started critical protocol (0 means not started) */
+        u32 crit_proto_nlportid;
+
         /* must be last because of the way we do wiphy_priv(),
          * and it should at least be aligned to NETDEV_ALIGN */
         struct wiphy wiphy __aligned(NETDEV_ALIGN);
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 390198bf4b36..0c7b7dd855f6 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -648,6 +648,11 @@ void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlportid)
 
         spin_unlock_bh(&wdev->mgmt_registrations_lock);
 
+        if (nlportid && rdev->crit_proto_nlportid == nlportid) {
+                rdev->crit_proto_nlportid = 0;
+                rdev_crit_proto_stop(rdev, wdev);
+        }
+
         if (nlportid == wdev->ap_unexpected_nlportid)
                 wdev->ap_unexpected_nlportid = 0;
 }
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 671b69a3c136..afa283841e8c 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -447,62 +447,69 @@ nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 };
 
-/* ifidx get helper */
-static int nl80211_get_ifidx(struct netlink_callback *cb)
+static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
+                                     struct netlink_callback *cb,
+                                     struct cfg80211_registered_device **rdev,
+                                     struct wireless_dev **wdev)
 {
-        int res;
-
-        res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
-                          nl80211_fam.attrbuf, nl80211_fam.maxattr,
-                          nl80211_policy);
-        if (res)
-                return res;
-
-        if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
-                return -EINVAL;
+        int err;
 
-        res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
-        if (!res)
-                return -EINVAL;
-        return res;
-}
+        rtnl_lock();
+        mutex_lock(&cfg80211_mutex);
 
-static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
-                                       struct netlink_callback *cb,
-                                       struct cfg80211_registered_device **rdev,
-                                       struct net_device **dev)
-{
-        int ifidx = cb->args[0];
-        int err;
+        if (!cb->args[0]) {
+                err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
+                                  nl80211_fam.attrbuf, nl80211_fam.maxattr,
+                                  nl80211_policy);
+                if (err)
+                        goto out_unlock;
 
-        if (!ifidx)
-                ifidx = nl80211_get_ifidx(cb);
-        if (ifidx < 0)
-                return ifidx;
+                *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
+                                                   nl80211_fam.attrbuf);
+                if (IS_ERR(*wdev)) {
+                        err = PTR_ERR(*wdev);
+                        goto out_unlock;
+                }
+                *rdev = wiphy_to_dev((*wdev)->wiphy);
+                cb->args[0] = (*rdev)->wiphy_idx;
+                cb->args[1] = (*wdev)->identifier;
+        } else {
+                struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0]);
+                struct wireless_dev *tmp;
 
-        cb->args[0] = ifidx;
+                if (!wiphy) {
+                        err = -ENODEV;
+                        goto out_unlock;
+                }
+                *rdev = wiphy_to_dev(wiphy);
+                *wdev = NULL;
 
-        rtnl_lock();
+                mutex_lock(&(*rdev)->devlist_mtx);
+                list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
+                        if (tmp->identifier == cb->args[1]) {
+                                *wdev = tmp;
+                                break;
+                        }
+                }
+                mutex_unlock(&(*rdev)->devlist_mtx);
 
-        *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
-        if (!*dev) {
-                err = -ENODEV;
-                goto out_rtnl;
+                if (!*wdev) {
+                        err = -ENODEV;
+                        goto out_unlock;
+                }
         }
 
-        *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
-        if (IS_ERR(*rdev)) {
-                err = PTR_ERR(*rdev);
-                goto out_rtnl;
-        }
+        cfg80211_lock_rdev(*rdev);
 
+        mutex_unlock(&cfg80211_mutex);
         return 0;
- out_rtnl:
+ out_unlock:
+        mutex_unlock(&cfg80211_mutex);
         rtnl_unlock();
         return err;
 }
 
-static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
+static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 {
         cfg80211_unlock_rdev(rdev);
         rtnl_unlock();
@@ -1417,6 +1424,10 @@ static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
                 }
                 CMD(start_p2p_device, START_P2P_DEVICE);
                 CMD(set_mcast_rate, SET_MCAST_RATE);
+                if (split) {
+                        CMD(crit_proto_start, CRIT_PROTOCOL_START);
+                        CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
+                }
 
 #ifdef CONFIG_NL80211_TESTMODE
                 CMD(testmode_cmd, TESTMODE);
@@ -3525,15 +3536,20 @@ static int nl80211_dump_station(struct sk_buff *skb,
 {
         struct station_info sinfo;
         struct cfg80211_registered_device *dev;
-        struct net_device *netdev;
+        struct wireless_dev *wdev;
         u8 mac_addr[ETH_ALEN];
-        int sta_idx = cb->args[1];
+        int sta_idx = cb->args[2];
         int err;
 
-        err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
+        err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
         if (err)
                 return err;
 
+        if (!wdev->netdev) {
+                err = -EINVAL;
+                goto out_err;
+        }
+
         if (!dev->ops->dump_station) {
                 err = -EOPNOTSUPP;
                 goto out_err;
@@ -3541,7 +3557,7 @@ static int nl80211_dump_station(struct sk_buff *skb,
 
         while (1) {
                 memset(&sinfo, 0, sizeof(sinfo));
-                err = rdev_dump_station(dev, netdev, sta_idx,
+                err = rdev_dump_station(dev, wdev->netdev, sta_idx,
                                         mac_addr, &sinfo);
                 if (err == -ENOENT)
                         break;
@@ -3551,7 +3567,7 @@ static int nl80211_dump_station(struct sk_buff *skb,
                 if (nl80211_send_station(skb,
                                 NETLINK_CB(cb->skb).portid,
                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
-                                dev, netdev, mac_addr,
+                                dev, wdev->netdev, mac_addr,
                                 &sinfo) < 0)
                         goto out;
 
@@ -3560,10 +3576,10 @@ static int nl80211_dump_station(struct sk_buff *skb,
 
 
  out:
-        cb->args[1] = sta_idx;
+        cb->args[2] = sta_idx;
         err = skb->len;
  out_err:
-        nl80211_finish_netdev_dump(dev);
+        nl80211_finish_wdev_dump(dev);
 
         return err;
 }
@@ -4167,13 +4183,13 @@ static int nl80211_dump_mpath(struct sk_buff *skb,
 {
         struct mpath_info pinfo;
         struct cfg80211_registered_device *dev;
-        struct net_device *netdev;
+        struct wireless_dev *wdev;
         u8 dst[ETH_ALEN];
         u8 next_hop[ETH_ALEN];
-        int path_idx = cb->args[1];
+        int path_idx = cb->args[2];
         int err;
 
-        err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
+        err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
         if (err)
                 return err;
 
@@ -4182,14 +4198,14 @@ static int nl80211_dump_mpath(struct sk_buff *skb,
                 goto out_err;
         }
 
-        if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
+        if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
                 err = -EOPNOTSUPP;
                 goto out_err;
         }
 
         while (1) {
-                err = rdev_dump_mpath(dev, netdev, path_idx, dst, next_hop,
-                                      &pinfo);
+                err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst,
+                                      next_hop, &pinfo);
                 if (err == -ENOENT)
                         break;
                 if (err)
@@ -4197,7 +4213,7 @@ static int nl80211_dump_mpath(struct sk_buff *skb,
 
                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
-                                       netdev, dst, next_hop,
+                                       wdev->netdev, dst, next_hop,
                                        &pinfo) < 0)
                         goto out;
 
@@ -4206,10 +4222,10 @@ static int nl80211_dump_mpath(struct sk_buff *skb,
 
 
  out:
-        cb->args[1] = path_idx;
+        cb->args[2] = path_idx;
         err = skb->len;
  out_err:
-        nl80211_finish_netdev_dump(dev);
+        nl80211_finish_wdev_dump(dev);
         return err;
 }
 
@@ -5565,9 +5581,13 @@ static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
 
         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
 
-        if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation) ||
+        if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
+                goto nla_put_failure;
+        if (wdev->netdev &&
             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
                 goto nla_put_failure;
+        if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
+                goto nla_put_failure;
 
         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
         if (!bss)
@@ -5647,22 +5667,18 @@ static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
         return -EMSGSIZE;
 }
 
-static int nl80211_dump_scan(struct sk_buff *skb,
-                             struct netlink_callback *cb)
+static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
 {
         struct cfg80211_registered_device *rdev;
-        struct net_device *dev;
         struct cfg80211_internal_bss *scan;
         struct wireless_dev *wdev;
-        int start = cb->args[1], idx = 0;
+        int start = cb->args[2], idx = 0;
         int err;
 
-        err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
+        err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
         if (err)
                 return err;
 
-        wdev = dev->ieee80211_ptr;
-
         wdev_lock(wdev);
         spin_lock_bh(&rdev->bss_lock);
         cfg80211_bss_expire(rdev);
@@ -5683,8 +5699,8 @@ static int nl80211_dump_scan(struct sk_buff *skb,
         spin_unlock_bh(&rdev->bss_lock);
         wdev_unlock(wdev);
 
-        cb->args[1] = idx;
-        nl80211_finish_netdev_dump(rdev);
+        cb->args[2] = idx;
+        nl80211_finish_wdev_dump(rdev);
 
         return skb->len;
 }
@@ -5753,14 +5769,19 @@ static int nl80211_dump_survey(struct sk_buff *skb,
 {
         struct survey_info survey;
         struct cfg80211_registered_device *dev;
-        struct net_device *netdev;
-        int survey_idx = cb->args[1];
+        struct wireless_dev *wdev;
+        int survey_idx = cb->args[2];
         int res;
 
-        res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
+        res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
         if (res)
                 return res;
 
+        if (!wdev->netdev) {
+                res = -EINVAL;
+                goto out_err;
+        }
+
         if (!dev->ops->dump_survey) {
                 res = -EOPNOTSUPP;
                 goto out_err;
@@ -5769,7 +5790,7 @@ static int nl80211_dump_survey(struct sk_buff *skb,
         while (1) {
                 struct ieee80211_channel *chan;
 
-                res = rdev_dump_survey(dev, netdev, survey_idx, &survey);
+                res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey);
                 if (res == -ENOENT)
                         break;
                 if (res)
@@ -5791,17 +5812,16 @@ static int nl80211_dump_survey(struct sk_buff *skb,
                 if (nl80211_send_survey(skb,
                                 NETLINK_CB(cb->skb).portid,
                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
-                                netdev,
-                                &survey) < 0)
+                                wdev->netdev, &survey) < 0)
                         goto out;
                 survey_idx++;
         }
 
  out:
-        cb->args[1] = survey_idx;
+        cb->args[2] = survey_idx;
         res = skb->len;
  out_err:
-        nl80211_finish_netdev_dump(dev);
+        nl80211_finish_wdev_dump(dev);
         return res;
 }
 
@@ -8143,9 +8163,11 @@ static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
         if (!rdev->ops->stop_p2p_device)
                 return -EOPNOTSUPP;
 
+        mutex_lock(&rdev->devlist_mtx);
         mutex_lock(&rdev->sched_scan_mtx);
         cfg80211_stop_p2p_device(rdev, wdev);
         mutex_unlock(&rdev->sched_scan_mtx);
+        mutex_unlock(&rdev->devlist_mtx);
 
         return 0;
 }
@@ -8198,6 +8220,64 @@ static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
         return rdev_update_ft_ies(rdev, dev, &ft_params);
 }
 
+static int nl80211_crit_protocol_start(struct sk_buff *skb,
+                                       struct genl_info *info)
+{
+        struct cfg80211_registered_device *rdev = info->user_ptr[0];
+        struct wireless_dev *wdev = info->user_ptr[1];
+        enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
+        u16 duration;
+        int ret;
+
+        if (!rdev->ops->crit_proto_start)
+                return -EOPNOTSUPP;
+
+        if (WARN_ON(!rdev->ops->crit_proto_stop))
+                return -EINVAL;
+
+        if (rdev->crit_proto_nlportid)
+                return -EBUSY;
+
+        /* determine protocol if provided */
+        if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
+                proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
+
+        if (proto >= NUM_NL80211_CRIT_PROTO)
+                return -EINVAL;
+
+        /* timeout must be provided */
+        if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
+                return -EINVAL;
+
+        duration =
+                nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
+
+        if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
+                return -ERANGE;
+
+        ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
+        if (!ret)
+                rdev->crit_proto_nlportid = info->snd_portid;
+
+        return ret;
+}
+
+static int nl80211_crit_protocol_stop(struct sk_buff *skb,
+                                      struct genl_info *info)
+{
+        struct cfg80211_registered_device *rdev = info->user_ptr[0];
+        struct wireless_dev *wdev = info->user_ptr[1];
+
+        if (!rdev->ops->crit_proto_stop)
+                return -EOPNOTSUPP;
+
+        if (rdev->crit_proto_nlportid) {
+                rdev->crit_proto_nlportid = 0;
+                rdev_crit_proto_stop(rdev, wdev);
+        }
+        return 0;
+}
+
 #define NL80211_FLAG_NEED_WIPHY         0x01
 #define NL80211_FLAG_NEED_NETDEV        0x02
 #define NL80211_FLAG_NEED_RTNL          0x04
@@ -8887,6 +8967,22 @@ static struct genl_ops nl80211_ops[] = {
                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
                                   NL80211_FLAG_NEED_RTNL,
         },
+        {
+                .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
+                .doit = nl80211_crit_protocol_start,
+                .policy = nl80211_policy,
+                .flags = GENL_ADMIN_PERM,
+                .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
+                                  NL80211_FLAG_NEED_RTNL,
+        },
+        {
+                .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
+                .doit = nl80211_crit_protocol_stop,
+                .policy = nl80211_policy,
+                .flags = GENL_ADMIN_PERM,
+                .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
+                                  NL80211_FLAG_NEED_RTNL,
+        }
 };
 
 static struct genl_multicast_group nl80211_mlme_mcgrp = {
@@ -10632,6 +10728,45 @@ void cfg80211_ft_event(struct net_device *netdev,
 }
 EXPORT_SYMBOL(cfg80211_ft_event);
 
+void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
+{
+        struct cfg80211_registered_device *rdev;
+        struct sk_buff *msg;
+        void *hdr;
+        u32 nlportid;
+
+        rdev = wiphy_to_dev(wdev->wiphy);
+        if (!rdev->crit_proto_nlportid)
+                return;
+
+        nlportid = rdev->crit_proto_nlportid;
+        rdev->crit_proto_nlportid = 0;
+
+        msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
+        if (!msg)
+                return;
+
+        hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
+        if (!hdr)
+                goto nla_put_failure;
+
+        if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
+            nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
+                goto nla_put_failure;
+
+        genlmsg_end(msg, hdr);
+
+        genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
+        return;
+
+ nla_put_failure:
+        if (hdr)
+                genlmsg_cancel(msg, hdr);
+        nlmsg_free(msg);
+
+}
+EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
+
 /* initialisation/exit functions */
 
 int nl80211_init(void)
diff --git a/net/wireless/rdev-ops.h b/net/wireless/rdev-ops.h
index d77e1c1d3a0e..9f15f0ac824d 100644
--- a/net/wireless/rdev-ops.h
+++ b/net/wireless/rdev-ops.h
@@ -875,7 +875,7 @@ static inline void rdev_stop_p2p_device(struct cfg80211_registered_device *rdev,
         trace_rdev_stop_p2p_device(&rdev->wiphy, wdev);
         rdev->ops->stop_p2p_device(&rdev->wiphy, wdev);
         trace_rdev_return_void(&rdev->wiphy);
-}                                       
+}
 
 static inline int rdev_set_mac_acl(struct cfg80211_registered_device *rdev,
                                    struct net_device *dev,
@@ -901,4 +901,26 @@ static inline int rdev_update_ft_ies(struct cfg80211_registered_device *rdev,
         return ret;
 }
 
+static inline int rdev_crit_proto_start(struct cfg80211_registered_device *rdev,
+                                        struct wireless_dev *wdev,
+                                        enum nl80211_crit_proto_id protocol,
+                                        u16 duration)
+{
+        int ret;
+
+        trace_rdev_crit_proto_start(&rdev->wiphy, wdev, protocol, duration);
+        ret = rdev->ops->crit_proto_start(&rdev->wiphy, wdev,
+                                          protocol, duration);
+        trace_rdev_return_int(&rdev->wiphy, ret);
+        return ret;
+}
+
+static inline void rdev_crit_proto_stop(struct cfg80211_registered_device *rdev,
+                                       struct wireless_dev *wdev)
+{
+        trace_rdev_crit_proto_stop(&rdev->wiphy, wdev);
+        rdev->ops->crit_proto_stop(&rdev->wiphy, wdev);
+        trace_rdev_return_void(&rdev->wiphy);
+}
+
 #endif /* __CFG80211_RDEV_OPS */
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index e6df52dc8c69..cc35fbaa4578 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -855,7 +855,7 @@ static void handle_channel(struct wiphy *wiphy,
                         return;
 
                 REG_DBG_PRINT("Disabling freq %d MHz\n", chan->center_freq);
-                chan->flags = IEEE80211_CHAN_DISABLED;
+                chan->flags |= IEEE80211_CHAN_DISABLED;
                 return;
         }
 
diff --git a/net/wireless/trace.h b/net/wireless/trace.h
index 3c2033b8f596..ecd4fcec3c94 100644
--- a/net/wireless/trace.h
+++ b/net/wireless/trace.h
@@ -1806,6 +1806,41 @@ TRACE_EVENT(rdev_update_ft_ies,
                   WIPHY_PR_ARG, NETDEV_PR_ARG, __entry->md)
 );
 
+TRACE_EVENT(rdev_crit_proto_start,
+        TP_PROTO(struct wiphy *wiphy, struct wireless_dev *wdev,
+                 enum nl80211_crit_proto_id protocol, u16 duration),
+        TP_ARGS(wiphy, wdev, protocol, duration),
+        TP_STRUCT__entry(
+                WIPHY_ENTRY
+                WDEV_ENTRY
+                __field(u16, proto)
+                __field(u16, duration)
+        ),
+        TP_fast_assign(
+                WIPHY_ASSIGN;
+                WDEV_ASSIGN;
+                __entry->proto = protocol;
+                __entry->duration = duration;
+        ),
+        TP_printk(WIPHY_PR_FMT ", " WDEV_PR_FMT ", proto=%x, duration=%u",
+                  WIPHY_PR_ARG, WDEV_PR_ARG, __entry->proto, __entry->duration)
+);
+
+TRACE_EVENT(rdev_crit_proto_stop,
+        TP_PROTO(struct wiphy *wiphy, struct wireless_dev *wdev),
+        TP_ARGS(wiphy, wdev),
+        TP_STRUCT__entry(
+                WIPHY_ENTRY
+                WDEV_ENTRY
+        ),
+        TP_fast_assign(
+                WIPHY_ASSIGN;
+                WDEV_ASSIGN;
+        ),
+        TP_printk(WIPHY_PR_FMT ", " WDEV_PR_FMT,
+                  WIPHY_PR_ARG, WDEV_PR_ARG)
+);
+
 /*************************************************************
  *           cfg80211 exported functions traces              *
  *************************************************************/
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 6cbac99ae03d..f5ad4d94ba88 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -1155,6 +1155,26 @@ int cfg80211_get_p2p_attr(const u8 *ies, unsigned int len,
 }
 EXPORT_SYMBOL(cfg80211_get_p2p_attr);
 
+bool ieee80211_operating_class_to_band(u8 operating_class,
+                                       enum ieee80211_band *band)
+{
+        switch (operating_class) {
+        case 112:
+        case 115 ... 127:
+                *band = IEEE80211_BAND_5GHZ;
+                return true;
+        case 81:
+        case 82:
+        case 83:
+        case 84:
+                *band = IEEE80211_BAND_2GHZ;
+                return true;
+        }
+
+        return false;
+}
+EXPORT_SYMBOL(ieee80211_operating_class_to_band);
+
 int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
                                  u32 beacon_int)
 {
@@ -1258,12 +1278,12 @@ int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
         list_for_each_entry(wdev_iter, &rdev->wdev_list, list) {
                 if (wdev_iter == wdev)
                         continue;
-                if (wdev_iter->netdev) {
-                        if (!netif_running(wdev_iter->netdev))
-                                continue;
-                } else if (wdev_iter->iftype == NL80211_IFTYPE_P2P_DEVICE) {
+                if (wdev_iter->iftype == NL80211_IFTYPE_P2P_DEVICE) {
                         if (!wdev_iter->p2p_started)
                                 continue;
+                } else if (wdev_iter->netdev) {
+                        if (!netif_running(wdev_iter->netdev))
+                                continue;
                 } else {
                         WARN_ON(1);
                 }