/* * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz> * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include <linux/kernel.h> #include <linux/device.h> #include <linux/if.h> #include <linux/interrupt.h> #include <linux/netdevice.h> #include <linux/rtnetlink.h> #include <linux/notifier.h> #include <net/mac80211.h> #include <net/cfg80211.h> #include "ieee80211_i.h" #include "rate.h" #include "debugfs.h" #include "debugfs_netdev.h" static ssize_t ieee80211_if_read( struct ieee80211_sub_if_data *sdata, char __user *userbuf, size_t count, loff_t *ppos, ssize_t (*format)(const struct ieee80211_sub_if_data *, char *, int)) { char buf[70]; ssize_t ret = -EINVAL; read_lock(&dev_base_lock); if (sdata->dev->reg_state == NETREG_REGISTERED) ret = (*format)(sdata, buf, sizeof(buf)); read_unlock(&dev_base_lock); if (ret != -EINVAL) ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret); 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, \ int buflen) \ { \ return scnprintf(buf, buflen, format_string, sdata->field); \ } #define IEEE80211_IF_FMT_DEC(name, field) \ IEEE80211_IF_FMT(name, field, "%d\n") #define IEEE80211_IF_FMT_HEX(name, field) \ IEEE80211_IF_FMT(name, field, "%#x\n") #define IEEE80211_IF_FMT_SIZE(name, field) \ IEEE80211_IF_FMT(name, field, "%zd\n") #define IEEE80211_IF_FMT_ATOMIC(name, field) \ static ssize_t ieee80211_if_fmt_##name( \ const struct ieee80211_sub_if_data *sdata, \ char *buf, int buflen) \ { \ return scnprintf(buf, buflen, "%d\n", atomic_read(&sdata->field));\ } #define IEEE80211_IF_FMT_MAC(name, field) \ static ssize_t ieee80211_if_fmt_##name( \ const struct ieee80211_sub_if_data *sdata, char *buf, \ int buflen) \ { \ return scnprintf(buf, buflen, "%pM\n", sdata->field); \ } #define __IEEE80211_IF_FILE(name) \ static ssize_t ieee80211_if_read_##name(struct file *file, \ char __user *userbuf, \ size_t count, loff_t *ppos) \ { \ return ieee80211_if_read(file->private_data, \ userbuf, count, ppos, \ ieee80211_if_fmt_##name); \ } \ static const struct file_operations name##_ops = { \ .read = ieee80211_if_read_##name, \ .open = mac80211_open_file_generic, \ } #define IEEE80211_IF_FILE(name, field, format) \ IEEE80211_IF_FMT_##format(name, field) \ __IEEE80211_IF_FILE(name) /* 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); /* STA/IBSS attributes */ IEEE80211_IF_FILE(state, u.sta.state, DEC); IEEE80211_IF_FILE(bssid, u.sta.bssid, MAC); IEEE80211_IF_FILE(prev_bssid, u.sta.prev_bssid, MAC); IEEE80211_IF_FILE(ssid_len, u.sta.ssid_len, SIZE); IEEE80211_IF_FILE(aid, u.sta.aid, DEC); IEEE80211_IF_FILE(ap_capab, u.sta.ap_capab, HEX); IEEE80211_IF_FILE(capab, u.sta.capab, HEX); IEEE80211_IF_FILE(extra_ie_len, u.sta.extra_ie_len, SIZE); IEEE80211_IF_FILE(auth_tries, u.sta.auth_tries, DEC); IEEE80211_IF_FILE(assoc_tries, u.sta.assoc_tries, DEC); IEEE80211_IF_FILE(auth_algs, u.sta.auth_algs, HEX); IEEE80211_IF_FILE(auth_alg, u.sta.auth_alg, DEC); IEEE80211_IF_FILE(auth_transaction, u.sta.auth_transaction, DEC); static ssize_t ieee80211_if_fmt_flags( const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) { return scnprintf(buf, buflen, "%s%s%s%s%s%s%s\n", sdata->u.sta.flags & IEEE80211_STA_SSID_SET ? "SSID\n" : "", sdata->u.sta.flags & IEEE80211_STA_BSSID_SET ? "BSSID\n" : "", sdata->u.sta.flags & IEEE80211_STA_PREV_BSSID_SET ? "prev BSSID\n" : "", sdata->u.sta.flags & IEEE80211_STA_AUTHENTICATED ? "AUTH\n" : "", sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED ? "ASSOC\n" : "", sdata->u.sta.flags & IEEE80211_STA_PROBEREQ_POLL ? "PROBEREQ POLL\n" : "", sdata->vif.bss_conf.use_cts_prot ? "CTS prot\n" : ""); } __IEEE80211_IF_FILE(flags); /* AP attributes */ IEEE80211_IF_FILE(num_sta_ps, u.ap.num_sta_ps, ATOMIC); IEEE80211_IF_FILE(dtim_count, u.ap.dtim_count, DEC); static ssize_t ieee80211_if_fmt_num_buffered_multicast( const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) { return scnprintf(buf, buflen, "%u\n", skb_queue_len(&sdata->u.ap.ps_bc_buf)); } __IEEE80211_IF_FILE(num_buffered_multicast); /* WDS attributes */ IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC); #ifdef CONFIG_MAC80211_MESH /* Mesh stats attributes */ 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, u.mesh.mshstats.dropped_frames_no_route, DEC); IEEE80211_IF_FILE(estab_plinks, u.mesh.mshstats.estab_plinks, ATOMIC); /* Mesh parameters */ IEEE80211_IF_FILE(dot11MeshMaxRetries, u.mesh.mshcfg.dot11MeshMaxRetries, DEC); IEEE80211_IF_FILE(dot11MeshRetryTimeout, u.mesh.mshcfg.dot11MeshRetryTimeout, DEC); IEEE80211_IF_FILE(dot11MeshConfirmTimeout, u.mesh.mshcfg.dot11MeshConfirmTimeout, DEC); IEEE80211_IF_FILE(dot11MeshHoldingTimeout, u.mesh.mshcfg.dot11MeshHoldingTimeout, DEC); IEEE80211_IF_FILE(dot11MeshTTL, u.mesh.mshcfg.dot11MeshTTL, DEC); IEEE80211_IF_FILE(auto_open_plinks, u.mesh.mshcfg.auto_open_plinks, DEC); IEEE80211_IF_FILE(dot11MeshMaxPeerLinks, u.mesh.mshcfg.dot11MeshMaxPeerLinks, DEC); IEEE80211_IF_FILE(dot11MeshHWMPactivePathTimeout, u.mesh.mshcfg.dot11MeshHWMPactivePathTimeout, DEC); IEEE80211_IF_FILE(dot11MeshHWMPpreqMinInterval, u.mesh.mshcfg.dot11MeshHWMPpreqMinInterval, DEC); IEEE80211_IF_FILE(dot11MeshHWMPnetDiameterTraversalTime, u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC); IEEE80211_IF_FILE(dot11MeshHWMPmaxPREQretries, u.mesh.mshcfg.dot11MeshHWMPmaxPREQretries, DEC); 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); #endif #define DEBUGFS_ADD(name, type)\ sdata->debugfs.type.name = debugfs_create_file(#name, 0400,\ sdata->debugfsdir, 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); } 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(num_sta_ps, ap); DEBUGFS_ADD(dtim_count, ap); DEBUGFS_ADD(num_buffered_multicast, ap); } 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(peer, wds); } 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); } 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); MESHSTATS_ADD(fwded_frames); MESHSTATS_ADD(dropped_frames_ttl); MESHSTATS_ADD(dropped_frames_no_route); MESHSTATS_ADD(estab_plinks); } #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); MESHPARAMS_ADD(dot11MeshMaxRetries); MESHPARAMS_ADD(dot11MeshRetryTimeout); MESHPARAMS_ADD(dot11MeshConfirmTimeout); MESHPARAMS_ADD(dot11MeshHoldingTimeout); MESHPARAMS_ADD(dot11MeshTTL); MESHPARAMS_ADD(auto_open_plinks); MESHPARAMS_ADD(dot11MeshMaxPeerLinks); MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout); MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval); MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime); MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries); MESHPARAMS_ADD(path_refresh_time); MESHPARAMS_ADD(min_discovery_timeout); } #endif static void add_files(struct ieee80211_sub_if_data *sdata) { if (!sdata->debugfsdir) return; switch (sdata->vif.type) { case NL80211_IFTYPE_MESH_POINT: #ifdef CONFIG_MAC80211_MESH add_mesh_stats(sdata); add_mesh_config(sdata); #endif break; case NL80211_IFTYPE_STATION: case NL80211_IFTYPE_ADHOC: add_sta_files(sdata); break; case NL80211_IFTYPE_AP: add_ap_files(sdata); break; case NL80211_IFTYPE_WDS: add_wds_files(sdata); break; case NL80211_IFTYPE_MONITOR: add_monitor_files(sdata); break; case NL80211_IFTYPE_AP_VLAN: add_vlan_files(sdata); break; default: break; } } #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: case NL80211_IFTYPE_ADHOC: del_sta_files(sdata); 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, 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; } static int netdev_notify(struct notifier_block *nb, unsigned long state, void *ndev) { struct net_device *dev = ndev; struct dentry *dir; struct ieee80211_sub_if_data *sdata; char buf[10+IFNAMSIZ]; if (state != NETDEV_CHANGENAME) return 0; 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; if (!dir) return 0; sprintf(buf, "netdev:%s", dev->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; }