From e9f207f0ff90bf60b825800d7450e6f2ff2eab88 Mon Sep 17 00:00:00 2001 From: Jiri Benc Date: Sat, 5 May 2007 11:46:38 -0700 Subject: [MAC80211]: Add debugfs attributes. Export various mac80211 internal variables through debugfs. Signed-off-by: Jiri Benc Signed-off-by: John W. Linville Signed-off-by: David S. Miller --- net/mac80211/debugfs_netdev.c | 440 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 440 insertions(+) create mode 100644 net/mac80211/debugfs_netdev.c (limited to 'net/mac80211/debugfs_netdev.c') diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c new file mode 100644 index 000000000000..9e3964638bad --- /dev/null +++ b/net/mac80211/debugfs_netdev.c @@ -0,0 +1,440 @@ +/* + * Copyright (c) 2006 Jiri Benc + * Copyright 2007 Johannes Berg + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include "ieee80211_i.h" +#include "ieee80211_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)); + ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret); + } + read_unlock(&dev_base_lock); + 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, MAC_FMT "\n", MAC_ARG(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(channel_use, channel_use, DEC); +IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC); +IEEE80211_IF_FILE(eapol, eapol, DEC); +IEEE80211_IF_FILE(ieee8021_x, ieee802_1x, 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.ssid_set ? "SSID\n" : "", + sdata->u.sta.bssid_set ? "BSSID\n" : "", + sdata->u.sta.prev_bssid_set ? "prev BSSID\n" : "", + sdata->u.sta.authenticated ? "AUTH\n" : "", + sdata->u.sta.associated ? "ASSOC\n" : "", + sdata->u.sta.probereq_poll ? "PROBEREQ POLL\n" : "", + sdata->u.sta.use_protection ? "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_period, u.ap.dtim_period, DEC); +IEEE80211_IF_FILE(dtim_count, u.ap.dtim_count, DEC); +IEEE80211_IF_FILE(num_beacons, u.ap.num_beacons, DEC); +IEEE80211_IF_FILE(force_unicast_rateidx, u.ap.force_unicast_rateidx, DEC); +IEEE80211_IF_FILE(max_ratectrl_rateidx, u.ap.max_ratectrl_rateidx, 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); + +static ssize_t ieee80211_if_fmt_beacon_head_len( + const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) +{ + if (sdata->u.ap.beacon_head) + return scnprintf(buf, buflen, "%d\n", + sdata->u.ap.beacon_head_len); + return scnprintf(buf, buflen, "\n"); +} +__IEEE80211_IF_FILE(beacon_head_len); + +static ssize_t ieee80211_if_fmt_beacon_tail_len( + const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) +{ + if (sdata->u.ap.beacon_tail) + return scnprintf(buf, buflen, "%d\n", + sdata->u.ap.beacon_tail_len); + return scnprintf(buf, buflen, "\n"); +} +__IEEE80211_IF_FILE(beacon_tail_len); + +/* WDS attributes */ +IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC); + +/* VLAN attributes */ +IEEE80211_IF_FILE(vlan_id, u.vlan.id, DEC); + +/* MONITOR attributes */ +static ssize_t ieee80211_if_fmt_mode( + const struct ieee80211_sub_if_data *sdata, char *buf, int buflen) +{ + struct ieee80211_local *local = sdata->local; + + return scnprintf(buf, buflen, "%s\n", + ((local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER) || + local->open_count == local->monitors) ? + "hard" : "soft"); +} +__IEEE80211_IF_FILE(mode); + + +#define DEBUGFS_ADD(name, type)\ + sdata->debugfs.type.name = debugfs_create_file(#name, 0444,\ + sdata->debugfsdir, sdata, &name##_ops); + +static void add_sta_files(struct ieee80211_sub_if_data *sdata) +{ + DEBUGFS_ADD(channel_use, sta); + DEBUGFS_ADD(drop_unencrypted, sta); + DEBUGFS_ADD(eapol, sta); + DEBUGFS_ADD(ieee8021_x, 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(channel_use, ap); + DEBUGFS_ADD(drop_unencrypted, ap); + DEBUGFS_ADD(eapol, ap); + DEBUGFS_ADD(ieee8021_x, ap); + DEBUGFS_ADD(num_sta_ps, ap); + DEBUGFS_ADD(dtim_period, ap); + DEBUGFS_ADD(dtim_count, ap); + DEBUGFS_ADD(num_beacons, ap); + DEBUGFS_ADD(force_unicast_rateidx, ap); + DEBUGFS_ADD(max_ratectrl_rateidx, ap); + DEBUGFS_ADD(num_buffered_multicast, ap); + DEBUGFS_ADD(beacon_head_len, ap); + DEBUGFS_ADD(beacon_tail_len, ap); +} + +static void add_wds_files(struct ieee80211_sub_if_data *sdata) +{ + DEBUGFS_ADD(channel_use, wds); + DEBUGFS_ADD(drop_unencrypted, wds); + DEBUGFS_ADD(eapol, wds); + DEBUGFS_ADD(ieee8021_x, wds); + DEBUGFS_ADD(peer, wds); +} + +static void add_vlan_files(struct ieee80211_sub_if_data *sdata) +{ + DEBUGFS_ADD(channel_use, vlan); + DEBUGFS_ADD(drop_unencrypted, vlan); + DEBUGFS_ADD(eapol, vlan); + DEBUGFS_ADD(ieee8021_x, vlan); + DEBUGFS_ADD(vlan_id, vlan); +} + +static void add_monitor_files(struct ieee80211_sub_if_data *sdata) +{ + DEBUGFS_ADD(mode, monitor); +} + +static void add_files(struct ieee80211_sub_if_data *sdata) +{ + if (!sdata->debugfsdir) + return; + + switch (sdata->type) { + case IEEE80211_IF_TYPE_STA: + case IEEE80211_IF_TYPE_IBSS: + add_sta_files(sdata); + break; + case IEEE80211_IF_TYPE_AP: + add_ap_files(sdata); + break; + case IEEE80211_IF_TYPE_WDS: + add_wds_files(sdata); + break; + case IEEE80211_IF_TYPE_MNTR: + add_monitor_files(sdata); + break; + case IEEE80211_IF_TYPE_VLAN: + add_vlan_files(sdata); + break; + default: + break; + } +} + +#define DEBUGFS_DEL(name, type)\ + debugfs_remove(sdata->debugfs.type.name);\ + sdata->debugfs.type.name = NULL; + +static void del_sta_files(struct ieee80211_sub_if_data *sdata) +{ + DEBUGFS_DEL(channel_use, sta); + DEBUGFS_DEL(drop_unencrypted, sta); + DEBUGFS_DEL(eapol, sta); + DEBUGFS_DEL(ieee8021_x, 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(channel_use, ap); + DEBUGFS_DEL(drop_unencrypted, ap); + DEBUGFS_DEL(eapol, ap); + DEBUGFS_DEL(ieee8021_x, ap); + DEBUGFS_DEL(num_sta_ps, ap); + DEBUGFS_DEL(dtim_period, ap); + DEBUGFS_DEL(dtim_count, ap); + DEBUGFS_DEL(num_beacons, ap); + DEBUGFS_DEL(force_unicast_rateidx, ap); + DEBUGFS_DEL(max_ratectrl_rateidx, ap); + DEBUGFS_DEL(num_buffered_multicast, ap); + DEBUGFS_DEL(beacon_head_len, ap); + DEBUGFS_DEL(beacon_tail_len, ap); +} + +static void del_wds_files(struct ieee80211_sub_if_data *sdata) +{ + DEBUGFS_DEL(channel_use, wds); + DEBUGFS_DEL(drop_unencrypted, wds); + DEBUGFS_DEL(eapol, wds); + DEBUGFS_DEL(ieee8021_x, wds); + DEBUGFS_DEL(peer, wds); +} + +static void del_vlan_files(struct ieee80211_sub_if_data *sdata) +{ + DEBUGFS_DEL(channel_use, vlan); + DEBUGFS_DEL(drop_unencrypted, vlan); + DEBUGFS_DEL(eapol, vlan); + DEBUGFS_DEL(ieee8021_x, vlan); + DEBUGFS_DEL(vlan_id, vlan); +} + +static void del_monitor_files(struct ieee80211_sub_if_data *sdata) +{ + DEBUGFS_DEL(mode, monitor); +} + +static void del_files(struct ieee80211_sub_if_data *sdata, int type) +{ + if (!sdata->debugfsdir) + return; + + switch (type) { + case IEEE80211_IF_TYPE_STA: + case IEEE80211_IF_TYPE_IBSS: + del_sta_files(sdata); + break; + case IEEE80211_IF_TYPE_AP: + del_ap_files(sdata); + break; + case IEEE80211_IF_TYPE_WDS: + del_wds_files(sdata); + break; + case IEEE80211_IF_TYPE_MNTR: + del_monitor_files(sdata); + break; + case IEEE80211_IF_TYPE_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); +} + +void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata) +{ + del_files(sdata, sdata->type); + debugfs_remove(sdata->debugfsdir); + sdata->debugfsdir = NULL; +} + +void ieee80211_debugfs_change_if_type(struct ieee80211_sub_if_data *sdata, + int oldtype) +{ + del_files(sdata, oldtype); + add_files(sdata); +} + +static int netdev_notify(struct notifier_block * nb, + unsigned long state, + void *ndev) +{ + struct net_device *dev = ndev; + 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; + + /* TODO + sprintf(buf, "netdev:%s", dev->name); + debugfs_rename(IEEE80211_DEV_TO_SUB_IF(dev)->debugfsdir, 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; +} -- cgit v1.2.1