9p: Make sure we are able to clunk the cached fid on umount
[safe/jmp/linux-2.6] / net / mac80211 / debugfs_netdev.c
index e342032..b4ddb2f 100644 (file)
@@ -41,6 +41,34 @@ static ssize_t ieee80211_if_read(
        return ret;
 }
 
+static ssize_t ieee80211_if_write(
+       struct ieee80211_sub_if_data *sdata,
+       const char __user *userbuf,
+       size_t count, loff_t *ppos,
+       ssize_t (*write)(struct ieee80211_sub_if_data *, const char *, int))
+{
+       u8 *buf;
+       ssize_t ret;
+
+       buf = kmalloc(count, GFP_KERNEL);
+       if (!buf)
+               return -ENOMEM;
+
+       ret = -EFAULT;
+       if (copy_from_user(buf, userbuf, count))
+               goto freebuf;
+
+       ret = -ENODEV;
+       rtnl_lock();
+       if (sdata->dev->reg_state == NETREG_REGISTERED)
+               ret = (*write)(sdata, buf, count);
+       rtnl_unlock();
+
+freebuf:
+       kfree(buf);
+       return ret;
+}
+
 #define IEEE80211_IF_FMT(name, field, format_string)                   \
 static ssize_t ieee80211_if_fmt_##name(                                        \
        const struct ieee80211_sub_if_data *sdata, char *buf,           \
@@ -71,7 +99,7 @@ static ssize_t ieee80211_if_fmt_##name(                                       \
        return scnprintf(buf, buflen, "%pM\n", sdata->field);           \
 }
 
-#define __IEEE80211_IF_FILE(name)                                      \
+#define __IEEE80211_IF_FILE(name, _write)                              \
 static ssize_t ieee80211_if_read_##name(struct file *file,             \
                                        char __user *userbuf,           \
                                        size_t count, loff_t *ppos)     \
@@ -82,46 +110,99 @@ static ssize_t ieee80211_if_read_##name(struct file *file,         \
 }                                                                      \
 static const struct file_operations name##_ops = {                     \
        .read = ieee80211_if_read_##name,                               \
+       .write = (_write),                                              \
        .open = mac80211_open_file_generic,                             \
 }
 
+#define __IEEE80211_IF_FILE_W(name)                                    \
+static ssize_t ieee80211_if_write_##name(struct file *file,            \
+                                        const char __user *userbuf,    \
+                                        size_t count, loff_t *ppos)    \
+{                                                                      \
+       return ieee80211_if_write(file->private_data, userbuf, count,   \
+                                 ppos, ieee80211_if_parse_##name);     \
+}                                                                      \
+__IEEE80211_IF_FILE(name, ieee80211_if_write_##name)
+
+
 #define IEEE80211_IF_FILE(name, field, format)                         \
                IEEE80211_IF_FMT_##format(name, field)                  \
-               __IEEE80211_IF_FILE(name)
+               __IEEE80211_IF_FILE(name, NULL)
 
 /* common attributes */
 IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC);
-IEEE80211_IF_FILE(force_unicast_rateidx, force_unicast_rateidx, DEC);
-IEEE80211_IF_FILE(max_ratectrl_rateidx, max_ratectrl_rateidx, DEC);
+IEEE80211_IF_FILE(rc_rateidx_mask_2ghz, rc_rateidx_mask[IEEE80211_BAND_2GHZ],
+                 HEX);
+IEEE80211_IF_FILE(rc_rateidx_mask_5ghz, rc_rateidx_mask[IEEE80211_BAND_5GHZ],
+                 HEX);
 
 /* STA attributes */
-IEEE80211_IF_FILE(state, u.mgd.state, DEC);
 IEEE80211_IF_FILE(bssid, u.mgd.bssid, MAC);
-IEEE80211_IF_FILE(prev_bssid, u.mgd.prev_bssid, MAC);
-IEEE80211_IF_FILE(ssid_len, u.mgd.ssid_len, SIZE);
 IEEE80211_IF_FILE(aid, u.mgd.aid, DEC);
-IEEE80211_IF_FILE(ap_capab, u.mgd.ap_capab, HEX);
-IEEE80211_IF_FILE(capab, u.mgd.capab, HEX);
-IEEE80211_IF_FILE(extra_ie_len, u.mgd.extra_ie_len, SIZE);
-IEEE80211_IF_FILE(auth_tries, u.mgd.auth_tries, DEC);
-IEEE80211_IF_FILE(assoc_tries, u.mgd.assoc_tries, DEC);
-IEEE80211_IF_FILE(auth_algs, u.mgd.auth_algs, HEX);
-IEEE80211_IF_FILE(auth_alg, u.mgd.auth_alg, DEC);
-IEEE80211_IF_FILE(auth_transaction, u.mgd.auth_transaction, DEC);
-
-static ssize_t ieee80211_if_fmt_flags(
-       const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
+
+static int ieee80211_set_smps(struct ieee80211_sub_if_data *sdata,
+                             enum ieee80211_smps_mode smps_mode)
 {
-       return scnprintf(buf, buflen, "%s%s%s%s%s%s%s\n",
-                sdata->u.mgd.flags & IEEE80211_STA_SSID_SET ? "SSID\n" : "",
-                sdata->u.mgd.flags & IEEE80211_STA_BSSID_SET ? "BSSID\n" : "",
-                sdata->u.mgd.flags & IEEE80211_STA_PREV_BSSID_SET ? "prev BSSID\n" : "",
-                sdata->u.mgd.flags & IEEE80211_STA_AUTHENTICATED ? "AUTH\n" : "",
-                sdata->u.mgd.flags & IEEE80211_STA_ASSOCIATED ? "ASSOC\n" : "",
-                sdata->u.mgd.flags & IEEE80211_STA_PROBEREQ_POLL ? "PROBEREQ POLL\n" : "",
-                sdata->vif.bss_conf.use_cts_prot ? "CTS prot\n" : "");
+       struct ieee80211_local *local = sdata->local;
+       int err;
+
+       if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_STATIC_SMPS) &&
+           smps_mode == IEEE80211_SMPS_STATIC)
+               return -EINVAL;
+
+       /* auto should be dynamic if in PS mode */
+       if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS) &&
+           (smps_mode == IEEE80211_SMPS_DYNAMIC ||
+            smps_mode == IEEE80211_SMPS_AUTOMATIC))
+               return -EINVAL;
+
+       /* supported only on managed interfaces for now */
+       if (sdata->vif.type != NL80211_IFTYPE_STATION)
+               return -EOPNOTSUPP;
+
+       mutex_lock(&local->iflist_mtx);
+       err = __ieee80211_request_smps(sdata, smps_mode);
+       mutex_unlock(&local->iflist_mtx);
+
+       return err;
 }
-__IEEE80211_IF_FILE(flags);
+
+static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
+       [IEEE80211_SMPS_AUTOMATIC] = "auto",
+       [IEEE80211_SMPS_OFF] = "off",
+       [IEEE80211_SMPS_STATIC] = "static",
+       [IEEE80211_SMPS_DYNAMIC] = "dynamic",
+};
+
+static ssize_t ieee80211_if_fmt_smps(const struct ieee80211_sub_if_data *sdata,
+                                    char *buf, int buflen)
+{
+       if (sdata->vif.type != NL80211_IFTYPE_STATION)
+               return -EOPNOTSUPP;
+
+       return snprintf(buf, buflen, "request: %s\nused: %s\n",
+                       smps_modes[sdata->u.mgd.req_smps],
+                       smps_modes[sdata->u.mgd.ap_smps]);
+}
+
+static ssize_t ieee80211_if_parse_smps(struct ieee80211_sub_if_data *sdata,
+                                      const char *buf, int buflen)
+{
+       enum ieee80211_smps_mode mode;
+
+       for (mode = 0; mode < IEEE80211_SMPS_NUM_MODES; mode++) {
+               if (strncmp(buf, smps_modes[mode], buflen) == 0) {
+                       int err = ieee80211_set_smps(sdata, mode);
+                       if (!err)
+                               return buflen;
+                       return err;
+               }
+       }
+
+       return -EINVAL;
+}
+
+__IEEE80211_IF_FILE_W(smps);
 
 /* AP attributes */
 IEEE80211_IF_FILE(num_sta_ps, u.ap.num_sta_ps, ATOMIC);
@@ -133,13 +214,15 @@ static ssize_t ieee80211_if_fmt_num_buffered_multicast(
        return scnprintf(buf, buflen, "%u\n",
                         skb_queue_len(&sdata->u.ap.ps_bc_buf));
 }
-__IEEE80211_IF_FILE(num_buffered_multicast);
+__IEEE80211_IF_FILE(num_buffered_multicast, NULL);
 
 /* WDS attributes */
 IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC);
 
 #ifdef CONFIG_MAC80211_MESH
 /* Mesh stats attributes */
+IEEE80211_IF_FILE(fwded_mcast, u.mesh.mshstats.fwded_mcast, DEC);
+IEEE80211_IF_FILE(fwded_unicast, u.mesh.mshstats.fwded_unicast, DEC);
 IEEE80211_IF_FILE(fwded_frames, u.mesh.mshstats.fwded_frames, DEC);
 IEEE80211_IF_FILE(dropped_frames_ttl, u.mesh.mshstats.dropped_frames_ttl, DEC);
 IEEE80211_IF_FILE(dropped_frames_no_route,
@@ -171,60 +254,55 @@ IEEE80211_IF_FILE(path_refresh_time,
                u.mesh.mshcfg.path_refresh_time, DEC);
 IEEE80211_IF_FILE(min_discovery_timeout,
                u.mesh.mshcfg.min_discovery_timeout, DEC);
+IEEE80211_IF_FILE(dot11MeshHWMPRootMode,
+               u.mesh.mshcfg.dot11MeshHWMPRootMode, DEC);
 #endif
 
 
-#define DEBUGFS_ADD(name, type)\
-       sdata->debugfs.type.name = debugfs_create_file(#name, 0400,\
-               sdata->debugfsdir, sdata, &name##_ops);
+#define DEBUGFS_ADD(name) \
+       debugfs_create_file(#name, 0400, sdata->debugfs.dir, \
+                           sdata, &name##_ops);
+
+#define DEBUGFS_ADD_MODE(name, mode) \
+       debugfs_create_file(#name, mode, sdata->debugfs.dir, \
+                           sdata, &name##_ops);
 
 static void add_sta_files(struct ieee80211_sub_if_data *sdata)
 {
-       DEBUGFS_ADD(drop_unencrypted, sta);
-       DEBUGFS_ADD(force_unicast_rateidx, sta);
-       DEBUGFS_ADD(max_ratectrl_rateidx, sta);
-
-       DEBUGFS_ADD(state, sta);
-       DEBUGFS_ADD(bssid, sta);
-       DEBUGFS_ADD(prev_bssid, sta);
-       DEBUGFS_ADD(ssid_len, sta);
-       DEBUGFS_ADD(aid, sta);
-       DEBUGFS_ADD(ap_capab, sta);
-       DEBUGFS_ADD(capab, sta);
-       DEBUGFS_ADD(extra_ie_len, sta);
-       DEBUGFS_ADD(auth_tries, sta);
-       DEBUGFS_ADD(assoc_tries, sta);
-       DEBUGFS_ADD(auth_algs, sta);
-       DEBUGFS_ADD(auth_alg, sta);
-       DEBUGFS_ADD(auth_transaction, sta);
-       DEBUGFS_ADD(flags, sta);
+       DEBUGFS_ADD(drop_unencrypted);
+       DEBUGFS_ADD(rc_rateidx_mask_2ghz);
+       DEBUGFS_ADD(rc_rateidx_mask_5ghz);
+
+       DEBUGFS_ADD(bssid);
+       DEBUGFS_ADD(aid);
+       DEBUGFS_ADD_MODE(smps, 0600);
 }
 
 static void add_ap_files(struct ieee80211_sub_if_data *sdata)
 {
-       DEBUGFS_ADD(drop_unencrypted, ap);
-       DEBUGFS_ADD(force_unicast_rateidx, ap);
-       DEBUGFS_ADD(max_ratectrl_rateidx, ap);
+       DEBUGFS_ADD(drop_unencrypted);
+       DEBUGFS_ADD(rc_rateidx_mask_2ghz);
+       DEBUGFS_ADD(rc_rateidx_mask_5ghz);
 
-       DEBUGFS_ADD(num_sta_ps, ap);
-       DEBUGFS_ADD(dtim_count, ap);
-       DEBUGFS_ADD(num_buffered_multicast, ap);
+       DEBUGFS_ADD(num_sta_ps);
+       DEBUGFS_ADD(dtim_count);
+       DEBUGFS_ADD(num_buffered_multicast);
 }
 
 static void add_wds_files(struct ieee80211_sub_if_data *sdata)
 {
-       DEBUGFS_ADD(drop_unencrypted, wds);
-       DEBUGFS_ADD(force_unicast_rateidx, wds);
-       DEBUGFS_ADD(max_ratectrl_rateidx, wds);
+       DEBUGFS_ADD(drop_unencrypted);
+       DEBUGFS_ADD(rc_rateidx_mask_2ghz);
+       DEBUGFS_ADD(rc_rateidx_mask_5ghz);
 
-       DEBUGFS_ADD(peer, wds);
+       DEBUGFS_ADD(peer);
 }
 
 static void add_vlan_files(struct ieee80211_sub_if_data *sdata)
 {
-       DEBUGFS_ADD(drop_unencrypted, vlan);
-       DEBUGFS_ADD(force_unicast_rateidx, vlan);
-       DEBUGFS_ADD(max_ratectrl_rateidx, vlan);
+       DEBUGFS_ADD(drop_unencrypted);
+       DEBUGFS_ADD(rc_rateidx_mask_2ghz);
+       DEBUGFS_ADD(rc_rateidx_mask_5ghz);
 }
 
 static void add_monitor_files(struct ieee80211_sub_if_data *sdata)
@@ -232,28 +310,32 @@ static void add_monitor_files(struct ieee80211_sub_if_data *sdata)
 }
 
 #ifdef CONFIG_MAC80211_MESH
-#define MESHSTATS_ADD(name)\
-       sdata->mesh_stats.name = debugfs_create_file(#name, 0400,\
-               sdata->mesh_stats_dir, sdata, &name##_ops);
 
 static void add_mesh_stats(struct ieee80211_sub_if_data *sdata)
 {
-       sdata->mesh_stats_dir = debugfs_create_dir("mesh_stats",
-                               sdata->debugfsdir);
+       struct dentry *dir = debugfs_create_dir("mesh_stats",
+                                               sdata->debugfs.dir);
+
+#define MESHSTATS_ADD(name)\
+       debugfs_create_file(#name, 0400, dir, sdata, &name##_ops);
+
+       MESHSTATS_ADD(fwded_mcast);
+       MESHSTATS_ADD(fwded_unicast);
        MESHSTATS_ADD(fwded_frames);
        MESHSTATS_ADD(dropped_frames_ttl);
        MESHSTATS_ADD(dropped_frames_no_route);
        MESHSTATS_ADD(estab_plinks);
+#undef MESHSTATS_ADD
 }
 
-#define MESHPARAMS_ADD(name)\
-       sdata->mesh_config.name = debugfs_create_file(#name, 0600,\
-               sdata->mesh_config_dir, sdata, &name##_ops);
-
 static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
 {
-       sdata->mesh_config_dir = debugfs_create_dir("mesh_config",
-                               sdata->debugfsdir);
+       struct dentry *dir = debugfs_create_dir("mesh_config",
+                                               sdata->debugfs.dir);
+
+#define MESHPARAMS_ADD(name) \
+       debugfs_create_file(#name, 0600, dir, sdata, &name##_ops);
+
        MESHPARAMS_ADD(dot11MeshMaxRetries);
        MESHPARAMS_ADD(dot11MeshRetryTimeout);
        MESHPARAMS_ADD(dot11MeshConfirmTimeout);
@@ -267,12 +349,14 @@ static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
        MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries);
        MESHPARAMS_ADD(path_refresh_time);
        MESHPARAMS_ADD(min_discovery_timeout);
+
+#undef MESHPARAMS_ADD
 }
 #endif
 
 static void add_files(struct ieee80211_sub_if_data *sdata)
 {
-       if (!sdata->debugfsdir)
+       if (!sdata->debugfs.dir)
                return;
 
        switch (sdata->vif.type) {
@@ -305,217 +389,37 @@ static void add_files(struct ieee80211_sub_if_data *sdata)
        }
 }
 
-#define DEBUGFS_DEL(name, type)                                        \
-       do {                                                    \
-               debugfs_remove(sdata->debugfs.type.name);       \
-               sdata->debugfs.type.name = NULL;                \
-       } while (0)
-
-static void del_sta_files(struct ieee80211_sub_if_data *sdata)
-{
-       DEBUGFS_DEL(drop_unencrypted, sta);
-       DEBUGFS_DEL(force_unicast_rateidx, sta);
-       DEBUGFS_DEL(max_ratectrl_rateidx, sta);
-
-       DEBUGFS_DEL(state, sta);
-       DEBUGFS_DEL(bssid, sta);
-       DEBUGFS_DEL(prev_bssid, sta);
-       DEBUGFS_DEL(ssid_len, sta);
-       DEBUGFS_DEL(aid, sta);
-       DEBUGFS_DEL(ap_capab, sta);
-       DEBUGFS_DEL(capab, sta);
-       DEBUGFS_DEL(extra_ie_len, sta);
-       DEBUGFS_DEL(auth_tries, sta);
-       DEBUGFS_DEL(assoc_tries, sta);
-       DEBUGFS_DEL(auth_algs, sta);
-       DEBUGFS_DEL(auth_alg, sta);
-       DEBUGFS_DEL(auth_transaction, sta);
-       DEBUGFS_DEL(flags, sta);
-}
-
-static void del_ap_files(struct ieee80211_sub_if_data *sdata)
-{
-       DEBUGFS_DEL(drop_unencrypted, ap);
-       DEBUGFS_DEL(force_unicast_rateidx, ap);
-       DEBUGFS_DEL(max_ratectrl_rateidx, ap);
-
-       DEBUGFS_DEL(num_sta_ps, ap);
-       DEBUGFS_DEL(dtim_count, ap);
-       DEBUGFS_DEL(num_buffered_multicast, ap);
-}
-
-static void del_wds_files(struct ieee80211_sub_if_data *sdata)
-{
-       DEBUGFS_DEL(drop_unencrypted, wds);
-       DEBUGFS_DEL(force_unicast_rateidx, wds);
-       DEBUGFS_DEL(max_ratectrl_rateidx, wds);
-
-       DEBUGFS_DEL(peer, wds);
-}
-
-static void del_vlan_files(struct ieee80211_sub_if_data *sdata)
-{
-       DEBUGFS_DEL(drop_unencrypted, vlan);
-       DEBUGFS_DEL(force_unicast_rateidx, vlan);
-       DEBUGFS_DEL(max_ratectrl_rateidx, vlan);
-}
-
-static void del_monitor_files(struct ieee80211_sub_if_data *sdata)
-{
-}
-
-#ifdef CONFIG_MAC80211_MESH
-#define MESHSTATS_DEL(name)                    \
-       do {                                            \
-               debugfs_remove(sdata->mesh_stats.name); \
-               sdata->mesh_stats.name = NULL;          \
-       } while (0)
-
-static void del_mesh_stats(struct ieee80211_sub_if_data *sdata)
-{
-       MESHSTATS_DEL(fwded_frames);
-       MESHSTATS_DEL(dropped_frames_ttl);
-       MESHSTATS_DEL(dropped_frames_no_route);
-       MESHSTATS_DEL(estab_plinks);
-       debugfs_remove(sdata->mesh_stats_dir);
-       sdata->mesh_stats_dir = NULL;
-}
-
-#define MESHPARAMS_DEL(name)                   \
-       do {                                            \
-               debugfs_remove(sdata->mesh_config.name);        \
-               sdata->mesh_config.name = NULL;         \
-       } while (0)
-
-static void del_mesh_config(struct ieee80211_sub_if_data *sdata)
-{
-       MESHPARAMS_DEL(dot11MeshMaxRetries);
-       MESHPARAMS_DEL(dot11MeshRetryTimeout);
-       MESHPARAMS_DEL(dot11MeshConfirmTimeout);
-       MESHPARAMS_DEL(dot11MeshHoldingTimeout);
-       MESHPARAMS_DEL(dot11MeshTTL);
-       MESHPARAMS_DEL(auto_open_plinks);
-       MESHPARAMS_DEL(dot11MeshMaxPeerLinks);
-       MESHPARAMS_DEL(dot11MeshHWMPactivePathTimeout);
-       MESHPARAMS_DEL(dot11MeshHWMPpreqMinInterval);
-       MESHPARAMS_DEL(dot11MeshHWMPnetDiameterTraversalTime);
-       MESHPARAMS_DEL(dot11MeshHWMPmaxPREQretries);
-       MESHPARAMS_DEL(path_refresh_time);
-       MESHPARAMS_DEL(min_discovery_timeout);
-       debugfs_remove(sdata->mesh_config_dir);
-       sdata->mesh_config_dir = NULL;
-}
-#endif
-
-static void del_files(struct ieee80211_sub_if_data *sdata)
-{
-       if (!sdata->debugfsdir)
-               return;
-
-       switch (sdata->vif.type) {
-       case NL80211_IFTYPE_MESH_POINT:
-#ifdef CONFIG_MAC80211_MESH
-               del_mesh_stats(sdata);
-               del_mesh_config(sdata);
-#endif
-               break;
-       case NL80211_IFTYPE_STATION:
-               del_sta_files(sdata);
-               break;
-       case NL80211_IFTYPE_ADHOC:
-               /* XXX */
-               break;
-       case NL80211_IFTYPE_AP:
-               del_ap_files(sdata);
-               break;
-       case NL80211_IFTYPE_WDS:
-               del_wds_files(sdata);
-               break;
-       case NL80211_IFTYPE_MONITOR:
-               del_monitor_files(sdata);
-               break;
-       case NL80211_IFTYPE_AP_VLAN:
-               del_vlan_files(sdata);
-               break;
-       default:
-               break;
-       }
-}
-
-static int notif_registered;
-
 void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata)
 {
        char buf[10+IFNAMSIZ];
 
-       if (!notif_registered)
-               return;
-
-       sprintf(buf, "netdev:%s", sdata->dev->name);
-       sdata->debugfsdir = debugfs_create_dir(buf,
+       sprintf(buf, "netdev:%s", sdata->name);
+       sdata->debugfs.dir = debugfs_create_dir(buf,
                sdata->local->hw.wiphy->debugfsdir);
        add_files(sdata);
 }
 
 void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
 {
-       del_files(sdata);
-       debugfs_remove(sdata->debugfsdir);
-       sdata->debugfsdir = NULL;
+       if (!sdata->debugfs.dir)
+               return;
+
+       debugfs_remove_recursive(sdata->debugfs.dir);
+       sdata->debugfs.dir = NULL;
 }
 
-static int netdev_notify(struct notifier_block *nb,
-                        unsigned long state,
-                        void *ndev)
+void ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data *sdata)
 {
-       struct net_device *dev = ndev;
        struct dentry *dir;
-       struct ieee80211_sub_if_data *sdata;
-       char buf[10+IFNAMSIZ];
-
-       if (state != NETDEV_CHANGENAME)
-               return 0;
+       char buf[10 + IFNAMSIZ];
 
-       if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy)
-               return 0;
-
-       if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid)
-               return 0;
-
-       sdata = IEEE80211_DEV_TO_SUB_IF(dev);
-
-       dir = sdata->debugfsdir;
+       dir = sdata->debugfs.dir;
 
        if (!dir)
-               return 0;
+               return;
 
-       sprintf(buf, "netdev:%s", dev->name);
+       sprintf(buf, "netdev:%s", sdata->name);
        if (!debugfs_rename(dir->d_parent, dir, dir->d_parent, buf))
                printk(KERN_ERR "mac80211: debugfs: failed to rename debugfs "
                       "dir to %s\n", buf);
-
-       return 0;
-}
-
-static struct notifier_block mac80211_debugfs_netdev_notifier = {
-       .notifier_call = netdev_notify,
-};
-
-void ieee80211_debugfs_netdev_init(void)
-{
-       int err;
-
-       err = register_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
-       if (err) {
-               printk(KERN_ERR
-                      "mac80211: failed to install netdev notifier,"
-                      " disabling per-netdev debugfs!\n");
-       } else
-               notif_registered = 1;
-}
-
-void ieee80211_debugfs_netdev_exit(void)
-{
-       unregister_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
-       notif_registered = 0;
 }