cfg802154: pass name_assign_type to rdev_add_virtual_intf()

This code is based on commit 6bab2e19c5ffd
("cfg80211: pass name_assign_type to rdev_add_virtual_intf()")

This will expose in sysfs whether the ifname of a IEEE-802.15.4
device is set by userspace or generated by the kernel.
We are using two types of name_assign_types
 o NET_NAME_ENUM: Default interface name provided by kernel
 o NET_NAME_USER: Interface name provided by user.

Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

8 files changed, 27 insertions, 12 deletions

diff --git a/include/net/cfg802154.h b/include/net/cfg802154.h
index eeda67652766..6ea16c84293b 100644
--- a/include/net/cfg802154.h
+++ b/include/net/cfg802154.h
@@ -30,11 +30,13 @@ struct wpan_phy_cca;
 struct cfg802154_ops {
         struct net_device * (*add_virtual_intf_deprecated)(struct wpan_phy *wpan_phy,
                                                            const char *name,
+                                                           unsigned char name_assign_type,
                                                            int type);
         void    (*del_virtual_intf_deprecated)(struct wpan_phy *wpan_phy,
                                                struct net_device *dev);
         int     (*add_virtual_intf)(struct wpan_phy *wpan_phy,
                                     const char *name,
+                                    unsigned char name_assign_type,
                                     enum nl802154_iftype type,
                                     __le64 extended_addr);
         int     (*del_virtual_intf)(struct wpan_phy *wpan_phy,
diff --git a/net/ieee802154/nl-phy.c b/net/ieee802154/nl-phy.c
index 1b9d25f6e898..346c6665d25e 100644
--- a/net/ieee802154/nl-phy.c
+++ b/net/ieee802154/nl-phy.c
@@ -175,6 +175,7 @@ int ieee802154_add_iface(struct sk_buff *skb, struct genl_info *info)
         int rc = -ENOBUFS;
         struct net_device *dev;
         int type = __IEEE802154_DEV_INVALID;
+        unsigned char name_assign_type;
 
         pr_debug("%s\n", __func__);
 
@@ -190,8 +191,10 @@ int ieee802154_add_iface(struct sk_buff *skb, struct genl_info *info)
                 if (devname[nla_len(info->attrs[IEEE802154_ATTR_DEV_NAME]) - 1]
                                 != '\0')
                         return -EINVAL; /* phy name should be null-terminated */
+                name_assign_type = NET_NAME_USER;
         } else  {
                 devname = "wpan%d";
+                name_assign_type = NET_NAME_ENUM;
         }
 
         if (strlen(devname) >= IFNAMSIZ)
@@ -221,7 +224,7 @@ int ieee802154_add_iface(struct sk_buff *skb, struct genl_info *info)
         }
 
         dev = rdev_add_virtual_intf_deprecated(wpan_phy_to_rdev(phy), devname,
-                                               type);
+                                               name_assign_type, type);
         if (IS_ERR(dev)) {
                 rc = PTR_ERR(dev);
                 goto nla_put_failure;
diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c
index a4daf91b8d0a..f3c12f6a4a39 100644
--- a/net/ieee802154/nl802154.c
+++ b/net/ieee802154/nl802154.c
@@ -589,7 +589,7 @@ static int nl802154_new_interface(struct sk_buff *skb, struct genl_info *info)
 
         return rdev_add_virtual_intf(rdev,
                                      nla_data(info->attrs[NL802154_ATTR_IFNAME]),
-                                     type, extended_addr);
+                                     NET_NAME_USER, type, extended_addr);
 }
 
 static int nl802154_del_interface(struct sk_buff *skb, struct genl_info *info)
diff --git a/net/ieee802154/rdev-ops.h b/net/ieee802154/rdev-ops.h
index 624413ee095f..7b5a9dd94fe5 100644
--- a/net/ieee802154/rdev-ops.h
+++ b/net/ieee802154/rdev-ops.h
@@ -8,10 +8,12 @@
 
 static inline struct net_device *
 rdev_add_virtual_intf_deprecated(struct cfg802154_registered_device *rdev,
-                                 const char *name, int type)
+                                 const char *name,
+                                 unsigned char name_assign_type,
+                                 int type)
 {
         return rdev->ops->add_virtual_intf_deprecated(&rdev->wpan_phy, name,
-                                                      type);
+                                                      name_assign_type, type);
 }
 
 static inline void
@@ -23,13 +25,15 @@ rdev_del_virtual_intf_deprecated(struct cfg802154_registered_device *rdev,
 
 static inline int
 rdev_add_virtual_intf(struct cfg802154_registered_device *rdev, char *name,
+                      unsigned char name_assign_type,
                       enum nl802154_iftype type, __le64 extended_addr)
 {
         int ret;
 
         trace_802154_rdev_add_virtual_intf(&rdev->wpan_phy, name, type,
                                            extended_addr);
-        ret = rdev->ops->add_virtual_intf(&rdev->wpan_phy, name, type,
+        ret = rdev->ops->add_virtual_intf(&rdev->wpan_phy, name,
+                                          name_assign_type, type,
                                           extended_addr);
         trace_802154_rdev_return_int(&rdev->wpan_phy, ret);
         return ret;
diff --git a/net/mac802154/cfg.c b/net/mac802154/cfg.c
index 5d9f68c75e5f..70be9c799f8a 100644
--- a/net/mac802154/cfg.c
+++ b/net/mac802154/cfg.c
@@ -22,13 +22,14 @@
 
 static struct net_device *
 ieee802154_add_iface_deprecated(struct wpan_phy *wpan_phy,
-                                const char *name, int type)
+                                const char *name,
+                                unsigned char name_assign_type, int type)
 {
         struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
         struct net_device *dev;
 
         rtnl_lock();
-        dev = ieee802154_if_add(local, name, type,
+        dev = ieee802154_if_add(local, name, name_assign_type, type,
                                 cpu_to_le64(0x0000000000000000ULL));
         rtnl_unlock();
 
@@ -45,12 +46,14 @@ static void ieee802154_del_iface_deprecated(struct wpan_phy *wpan_phy,
 
 static int
 ieee802154_add_iface(struct wpan_phy *phy, const char *name,
+                     unsigned char name_assign_type,
                      enum nl802154_iftype type, __le64 extended_addr)
 {
         struct ieee802154_local *local = wpan_phy_priv(phy);
         struct net_device *err;
 
-        err = ieee802154_if_add(local, name, type, extended_addr);
+        err = ieee802154_if_add(local, name, name_assign_type, type,
+                                extended_addr);
         return PTR_ERR_OR_ZERO(err);
 }
 
diff --git a/net/mac802154/ieee802154_i.h b/net/mac802154/ieee802154_i.h
index bebd70ffc7a3..127ba18386fc 100644
--- a/net/mac802154/ieee802154_i.h
+++ b/net/mac802154/ieee802154_i.h
@@ -182,7 +182,8 @@ void ieee802154_iface_exit(void);
 void ieee802154_if_remove(struct ieee802154_sub_if_data *sdata);
 struct net_device *
 ieee802154_if_add(struct ieee802154_local *local, const char *name,
-                  enum nl802154_iftype type, __le64 extended_addr);
+                  unsigned char name_assign_type, enum nl802154_iftype type,
+                  __le64 extended_addr);
 void ieee802154_remove_interfaces(struct ieee802154_local *local);
 
 #endif /* __IEEE802154_I_H */
diff --git a/net/mac802154/iface.c b/net/mac802154/iface.c
index 38b56f9d9386..91b75abbd1a1 100644
--- a/net/mac802154/iface.c
+++ b/net/mac802154/iface.c
@@ -522,7 +522,8 @@ ieee802154_setup_sdata(struct ieee802154_sub_if_data *sdata,
 
 struct net_device *
 ieee802154_if_add(struct ieee802154_local *local, const char *name,
-                  enum nl802154_iftype type, __le64 extended_addr)
+                  unsigned char name_assign_type, enum nl802154_iftype type,
+                  __le64 extended_addr)
 {
         struct net_device *ndev = NULL;
         struct ieee802154_sub_if_data *sdata = NULL;
@@ -531,7 +532,7 @@ ieee802154_if_add(struct ieee802154_local *local, const char *name,
         ASSERT_RTNL();
 
         ndev = alloc_netdev(sizeof(*sdata) + local->hw.vif_data_size, name,
-                            NET_NAME_UNKNOWN, ieee802154_if_setup);
+                            name_assign_type, ieee802154_if_setup);
         if (!ndev)
                 return ERR_PTR(-ENOMEM);
 
diff --git a/net/mac802154/main.c b/net/mac802154/main.c
index 8500378c8318..68b9667323ec 100644
--- a/net/mac802154/main.c
+++ b/net/mac802154/main.c
@@ -161,7 +161,8 @@ int ieee802154_register_hw(struct ieee802154_hw *hw)
 
         rtnl_lock();
 
-        dev = ieee802154_if_add(local, "wpan%d", NL802154_IFTYPE_NODE,
+        dev = ieee802154_if_add(local, "wpan%d", NET_NAME_ENUM,
+                                NL802154_IFTYPE_NODE,
                                 cpu_to_le64(0x0000000000000000ULL));
         if (IS_ERR(dev)) {
                 rtnl_unlock();