cfg80211/nl80211: introduce p2p device types

This adds P2P-STA and P2P-GO as device types so
we can distinguish between those and normal STA
or AP (respectively) type interfaces.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

5 files changed, 61 insertions, 24 deletions

diff --git a/net/wireless/core.c b/net/wireless/core.c
index b8191cf8622..ff9615a7ee7 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -726,6 +726,7 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb,
                         dev->ethtool_ops = &cfg80211_ethtool_ops;
 
                 if ((wdev->iftype == NL80211_IFTYPE_STATION ||
+                     wdev->iftype == NL80211_IFTYPE_P2P_CLIENT ||
                      wdev->iftype == NL80211_IFTYPE_ADHOC) && !wdev->use_4addr)
                         dev->priv_flags |= IFF_DONT_BRIDGE;
                 break;
@@ -734,6 +735,7 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb,
                 case NL80211_IFTYPE_ADHOC:
                         cfg80211_leave_ibss(rdev, dev, true);
                         break;
+                case NL80211_IFTYPE_P2P_CLIENT:
                 case NL80211_IFTYPE_STATION:
                         wdev_lock(wdev);
 #ifdef CONFIG_CFG80211_WEXT
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 8515b1e5c57..46f37116089 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -882,7 +882,8 @@ int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
                 if (!wdev->current_bss ||
                     memcmp(wdev->current_bss->pub.bssid, mgmt->bssid,
                            ETH_ALEN) != 0 ||
-                    (wdev->iftype == NL80211_IFTYPE_STATION &&
+                    ((wdev->iftype == NL80211_IFTYPE_STATION ||
+                      wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
                      memcmp(wdev->current_bss->pub.bssid, mgmt->da,
                             ETH_ALEN) != 0)) {
                         wdev_unlock(wdev);
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 1d6ef24254f..f15b1af2c76 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -410,12 +410,14 @@ static int nl80211_key_allowed(struct wireless_dev *wdev)
         switch (wdev->iftype) {
         case NL80211_IFTYPE_AP:
         case NL80211_IFTYPE_AP_VLAN:
+        case NL80211_IFTYPE_P2P_GO:
                 break;
         case NL80211_IFTYPE_ADHOC:
                 if (!wdev->current_bss)
                         return -ENOLINK;
                 break;
         case NL80211_IFTYPE_STATION:
+        case NL80211_IFTYPE_P2P_CLIENT:
                 if (wdev->sme_state != CFG80211_SME_CONNECTED)
                         return -ENOLINK;
                 break;
@@ -766,7 +768,8 @@ static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
                 wdev->iftype == NL80211_IFTYPE_AP ||
                 wdev->iftype == NL80211_IFTYPE_WDS ||
                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
-                wdev->iftype == NL80211_IFTYPE_MONITOR;
+                wdev->iftype == NL80211_IFTYPE_MONITOR ||
+                wdev->iftype == NL80211_IFTYPE_P2P_GO;
 }
 
 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
@@ -1693,7 +1696,8 @@ static int nl80211_addset_beacon(struct sk_buff *skb, struct genl_info *info)
         if (err)
                 goto unlock_rtnl;
 
-        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
+        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
                 err = -EOPNOTSUPP;
                 goto out;
         }
@@ -1785,7 +1789,8 @@ static int nl80211_del_beacon(struct sk_buff *skb, struct genl_info *info)
                 goto out;
         }
 
-        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
+        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
                 err = -EOPNOTSUPP;
                 goto out;
         }
@@ -2128,10 +2133,12 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
         switch (dev->ieee80211_ptr->iftype) {
         case NL80211_IFTYPE_AP:
         case NL80211_IFTYPE_AP_VLAN:
+        case NL80211_IFTYPE_P2P_GO:
                 /* disallow mesh-specific things */
                 if (params.plink_action)
                         err = -EINVAL;
                 break;
+        case NL80211_IFTYPE_P2P_CLIENT:
         case NL80211_IFTYPE_STATION:
                 /* disallow everything but AUTHORIZED flag */
                 if (params.plink_action)
@@ -2233,7 +2240,8 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
                 goto out_rtnl;
 
         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
-            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN) {
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
                 err = -EINVAL;
                 goto out;
         }
@@ -2286,7 +2294,8 @@ static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
 
         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
-            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
                 err = -EINVAL;
                 goto out;
         }
@@ -2660,7 +2669,8 @@ static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
                 goto out;
         }
 
-        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP) {
+        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
                 err = -EOPNOTSUPP;
                 goto out;
         }
@@ -3363,6 +3373,7 @@ static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
         }
 
         switch (wdev->iftype) {
+        case NL80211_IFTYPE_P2P_CLIENT:
         case NL80211_IFTYPE_STATION:
                 if (intbss == wdev->current_bss)
                         NLA_PUT_U32(msg, NL80211_BSS_STATUS,
@@ -3649,7 +3660,8 @@ static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
                 goto out;
         }
 
-        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
+        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
                 err = -EOPNOTSUPP;
                 goto out;
         }
@@ -3804,7 +3816,8 @@ static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
                 goto out;
         }
 
-        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
+        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
                 err = -EOPNOTSUPP;
                 goto out;
         }
@@ -3888,7 +3901,8 @@ static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
                 goto out;
         }
 
-        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
+        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
                 err = -EOPNOTSUPP;
                 goto out;
         }
@@ -3954,7 +3968,8 @@ static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
                 goto out;
         }
 
-        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
+        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
                 err = -EOPNOTSUPP;
                 goto out;
         }
@@ -4332,7 +4347,8 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
         if (err)
                 goto unlock_rtnl;
 
-        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
+        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
                 err = -EOPNOTSUPP;
                 goto out;
         }
@@ -4408,7 +4424,8 @@ static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
         if (err)
                 goto unlock_rtnl;
 
-        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
+        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
                 err = -EOPNOTSUPP;
                 goto out;
         }
@@ -4496,7 +4513,8 @@ static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
 
-        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
+        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
                 err = -EOPNOTSUPP;
                 goto out;
         }
@@ -4541,7 +4559,8 @@ static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
         if (err)
                 goto out_rtnl;
 
-        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION) {
+        if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
                 err = -EOPNOTSUPP;
                 goto out;
         }
@@ -4823,7 +4842,8 @@ static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
                 goto unlock_rtnl;
 
         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
-            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) {
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
                 err = -EOPNOTSUPP;
                 goto out;
         }
@@ -4875,7 +4895,8 @@ static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
         }
 
         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
-            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) {
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
+            dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) {
                 err = -EOPNOTSUPP;
                 goto out;
         }
@@ -5093,7 +5114,8 @@ static int nl80211_set_cqm_rssi(struct genl_info *info,
                 goto unlock_rdev;
         }
 
-        if (wdev->iftype != NL80211_IFTYPE_STATION) {
+        if (wdev->iftype != NL80211_IFTYPE_STATION &&
+            wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) {
                 err = -EOPNOTSUPP;
                 goto unlock_rdev;
         }
diff --git a/net/wireless/sme.c b/net/wireless/sme.c
index a8c2d6b877a..f161b984454 100644
--- a/net/wireless/sme.c
+++ b/net/wireless/sme.c
@@ -411,7 +411,8 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
 
         ASSERT_WDEV_LOCK(wdev);
 
-        if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
+        if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
+                    wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
                 return;
 
         if (wdev->sme_state != CFG80211_SME_CONNECTING)
@@ -548,7 +549,8 @@ void __cfg80211_roamed(struct wireless_dev *wdev, const u8 *bssid,
 
         ASSERT_WDEV_LOCK(wdev);
 
-        if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
+        if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
+                    wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
                 return;
 
         if (wdev->sme_state != CFG80211_SME_CONNECTED)
@@ -644,7 +646,8 @@ void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
 
         ASSERT_WDEV_LOCK(wdev);
 
-        if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION))
+        if (WARN_ON(wdev->iftype != NL80211_IFTYPE_STATION &&
+                    wdev->iftype != NL80211_IFTYPE_P2P_CLIENT))
                 return;
 
         if (wdev->sme_state != CFG80211_SME_CONNECTED)
diff --git a/net/wireless/util.c b/net/wireless/util.c
index bca32eb8f44..fb5448f7d55 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -326,7 +326,8 @@ int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr,
                 cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) {
         case cpu_to_le16(IEEE80211_FCTL_TODS):
                 if (unlikely(iftype != NL80211_IFTYPE_AP &&
-                             iftype != NL80211_IFTYPE_AP_VLAN))
+                             iftype != NL80211_IFTYPE_AP_VLAN &&
+                             iftype != NL80211_IFTYPE_P2P_GO))
                         return -1;
                 break;
         case cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS):
@@ -354,7 +355,8 @@ int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr,
                 break;
         case cpu_to_le16(IEEE80211_FCTL_FROMDS):
                 if ((iftype != NL80211_IFTYPE_STATION &&
-                    iftype != NL80211_IFTYPE_MESH_POINT) ||
+                     iftype != NL80211_IFTYPE_P2P_CLIENT &&
+                     iftype != NL80211_IFTYPE_MESH_POINT) ||
                     (is_multicast_ether_addr(dst) &&
                      !compare_ether_addr(src, addr)))
                         return -1;
@@ -431,6 +433,7 @@ int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr,
         switch (iftype) {
         case NL80211_IFTYPE_AP:
         case NL80211_IFTYPE_AP_VLAN:
+        case NL80211_IFTYPE_P2P_GO:
                 fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS);
                 /* DA BSSID SA */
                 memcpy(hdr.addr1, skb->data, ETH_ALEN);
@@ -439,6 +442,7 @@ int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr,
                 hdrlen = 24;
                 break;
         case NL80211_IFTYPE_STATION:
+        case NL80211_IFTYPE_P2P_CLIENT:
                 fc |= cpu_to_le16(IEEE80211_FCTL_TODS);
                 /* BSSID SA DA */
                 memcpy(hdr.addr1, bssid, ETH_ALEN);
@@ -778,7 +782,9 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
 
         /* if it's part of a bridge, reject changing type to station/ibss */
         if ((dev->priv_flags & IFF_BRIDGE_PORT) &&
-            (ntype == NL80211_IFTYPE_ADHOC || ntype == NL80211_IFTYPE_STATION))
+            (ntype == NL80211_IFTYPE_ADHOC ||
+             ntype == NL80211_IFTYPE_STATION ||
+             ntype == NL80211_IFTYPE_P2P_CLIENT))
                 return -EBUSY;
 
         if (ntype != otype) {
@@ -789,6 +795,7 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
                         cfg80211_leave_ibss(rdev, dev, false);
                         break;
                 case NL80211_IFTYPE_STATION:
+                case NL80211_IFTYPE_P2P_CLIENT:
                         cfg80211_disconnect(rdev, dev,
                                             WLAN_REASON_DEAUTH_LEAVING, true);
                         break;
@@ -817,9 +824,11 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
                         if (dev->ieee80211_ptr->use_4addr)
                                 break;
                         /* fall through */
+                case NL80211_IFTYPE_P2P_CLIENT:
                 case NL80211_IFTYPE_ADHOC:
                         dev->priv_flags |= IFF_DONT_BRIDGE;
                         break;
+                case NL80211_IFTYPE_P2P_GO:
                 case NL80211_IFTYPE_AP:
                 case NL80211_IFTYPE_AP_VLAN:
                 case NL80211_IFTYPE_WDS: