| /* |
| * mac80211 debugfs for wireless PHYs |
| * |
| * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> |
| * Copyright 2013-2014 Intel Mobile Communications GmbH |
| * |
| * GPLv2 |
| * |
| */ |
| |
| #include <linux/debugfs.h> |
| #include <linux/rtnetlink.h> |
| #include "ieee80211_i.h" |
| #include "driver-ops.h" |
| #include "rate.h" |
| #include "debugfs.h" |
| |
| #define DEBUGFS_FORMAT_BUFFER_SIZE 100 |
| |
| int mac80211_format_buffer(char __user *userbuf, size_t count, |
| loff_t *ppos, char *fmt, ...) |
| { |
| va_list args; |
| char buf[DEBUGFS_FORMAT_BUFFER_SIZE]; |
| int res; |
| |
| va_start(args, fmt); |
| res = vscnprintf(buf, sizeof(buf), fmt, args); |
| va_end(args); |
| |
| return simple_read_from_buffer(userbuf, count, ppos, buf, res); |
| } |
| |
| #define DEBUGFS_READONLY_FILE_FN(name, fmt, value...) \ |
| static ssize_t name## _read(struct file *file, char __user *userbuf, \ |
| size_t count, loff_t *ppos) \ |
| { \ |
| struct ieee80211_local *local = file->private_data; \ |
| \ |
| return mac80211_format_buffer(userbuf, count, ppos, \ |
| fmt "\n", ##value); \ |
| } |
| |
| #define DEBUGFS_READONLY_FILE_OPS(name) \ |
| static const struct file_operations name## _ops = { \ |
| .read = name## _read, \ |
| .open = simple_open, \ |
| .llseek = generic_file_llseek, \ |
| }; |
| |
| #define DEBUGFS_READONLY_FILE(name, fmt, value...) \ |
| DEBUGFS_READONLY_FILE_FN(name, fmt, value) \ |
| DEBUGFS_READONLY_FILE_OPS(name) |
| |
| #define DEBUGFS_ADD(name) \ |
| debugfs_create_file(#name, 0400, phyd, local, &name## _ops); |
| |
| #define DEBUGFS_ADD_MODE(name, mode) \ |
| debugfs_create_file(#name, mode, phyd, local, &name## _ops); |
| |
| |
| DEBUGFS_READONLY_FILE(user_power, "%d", |
| local->user_power_level); |
| DEBUGFS_READONLY_FILE(power, "%d", |
| local->hw.conf.power_level); |
| DEBUGFS_READONLY_FILE(total_ps_buffered, "%d", |
| local->total_ps_buffered); |
| DEBUGFS_READONLY_FILE(wep_iv, "%#08x", |
| local->wep_iv & 0xffffff); |
| DEBUGFS_READONLY_FILE(rate_ctrl_alg, "%s", |
| local->rate_ctrl ? local->rate_ctrl->ops->name : "hw/driver"); |
| |
| #ifdef CONFIG_PM |
| static ssize_t reset_write(struct file *file, const char __user *user_buf, |
| size_t count, loff_t *ppos) |
| { |
| struct ieee80211_local *local = file->private_data; |
| |
| rtnl_lock(); |
| __ieee80211_suspend(&local->hw, NULL); |
| __ieee80211_resume(&local->hw); |
| rtnl_unlock(); |
| |
| return count; |
| } |
| |
| static const struct file_operations reset_ops = { |
| .write = reset_write, |
| .open = simple_open, |
| .llseek = noop_llseek, |
| }; |
| #endif |
| |
| static const char *hw_flag_names[] = { |
| #define FLAG(F) [IEEE80211_HW_##F] = #F |
| FLAG(HAS_RATE_CONTROL), |
| FLAG(RX_INCLUDES_FCS), |
| FLAG(HOST_BROADCAST_PS_BUFFERING), |
| FLAG(SIGNAL_UNSPEC), |
| FLAG(SIGNAL_DBM), |
| FLAG(NEED_DTIM_BEFORE_ASSOC), |
| FLAG(SPECTRUM_MGMT), |
| FLAG(AMPDU_AGGREGATION), |
| FLAG(SUPPORTS_PS), |
| FLAG(PS_NULLFUNC_STACK), |
| FLAG(SUPPORTS_DYNAMIC_PS), |
| FLAG(MFP_CAPABLE), |
| FLAG(WANT_MONITOR_VIF), |
| FLAG(NO_AUTO_VIF), |
| FLAG(SW_CRYPTO_CONTROL), |
| FLAG(SUPPORT_FAST_XMIT), |
| FLAG(REPORTS_TX_ACK_STATUS), |
| FLAG(CONNECTION_MONITOR), |
| FLAG(QUEUE_CONTROL), |
| FLAG(SUPPORTS_PER_STA_GTK), |
| FLAG(AP_LINK_PS), |
| FLAG(TX_AMPDU_SETUP_IN_HW), |
| FLAG(SUPPORTS_RC_TABLE), |
| FLAG(P2P_DEV_ADDR_FOR_INTF), |
| FLAG(TIMING_BEACON_ONLY), |
| FLAG(SUPPORTS_HT_CCK_RATES), |
| FLAG(CHANCTX_STA_CSA), |
| FLAG(SUPPORTS_CLONED_SKBS), |
| FLAG(SINGLE_SCAN_ON_ALL_BANDS), |
| FLAG(TDLS_WIDER_BW), |
| FLAG(SUPPORTS_AMSDU_IN_AMPDU), |
| FLAG(BEACON_TX_STATUS), |
| FLAG(NEEDS_UNIQUE_STA_ADDR), |
| FLAG(SUPPORTS_REORDERING_BUFFER), |
| FLAG(USES_RSS), |
| #undef FLAG |
| }; |
| |
| static ssize_t hwflags_read(struct file *file, char __user *user_buf, |
| size_t count, loff_t *ppos) |
| { |
| struct ieee80211_local *local = file->private_data; |
| size_t bufsz = 30 * NUM_IEEE80211_HW_FLAGS; |
| char *buf = kzalloc(bufsz, GFP_KERNEL); |
| char *pos = buf, *end = buf + bufsz - 1; |
| ssize_t rv; |
| int i; |
| |
| if (!buf) |
| return -ENOMEM; |
| |
| /* fail compilation if somebody adds or removes |
| * a flag without updating the name array above |
| */ |
| BUILD_BUG_ON(ARRAY_SIZE(hw_flag_names) != NUM_IEEE80211_HW_FLAGS); |
| |
| for (i = 0; i < NUM_IEEE80211_HW_FLAGS; i++) { |
| if (test_bit(i, local->hw.flags)) |
| pos += scnprintf(pos, end - pos, "%s\n", |
| hw_flag_names[i]); |
| } |
| |
| rv = simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf)); |
| kfree(buf); |
| return rv; |
| } |
| |
| static ssize_t queues_read(struct file *file, char __user *user_buf, |
| size_t count, loff_t *ppos) |
| { |
| struct ieee80211_local *local = file->private_data; |
| unsigned long flags; |
| char buf[IEEE80211_MAX_QUEUES * 20]; |
| int q, res = 0; |
| |
| spin_lock_irqsave(&local->queue_stop_reason_lock, flags); |
| for (q = 0; q < local->hw.queues; q++) |
| res += sprintf(buf + res, "%02d: %#.8lx/%d\n", q, |
| local->queue_stop_reasons[q], |
| skb_queue_len(&local->pending[q])); |
| spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); |
| |
| return simple_read_from_buffer(user_buf, count, ppos, buf, res); |
| } |
| |
| DEBUGFS_READONLY_FILE_OPS(hwflags); |
| DEBUGFS_READONLY_FILE_OPS(queues); |
| |
| /* statistics stuff */ |
| |
| static ssize_t format_devstat_counter(struct ieee80211_local *local, |
| char __user *userbuf, |
| size_t count, loff_t *ppos, |
| int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf, |
| int buflen)) |
| { |
| struct ieee80211_low_level_stats stats; |
| char buf[20]; |
| int res; |
| |
| rtnl_lock(); |
| res = drv_get_stats(local, &stats); |
| rtnl_unlock(); |
| if (res) |
| return res; |
| res = printvalue(&stats, buf, sizeof(buf)); |
| return simple_read_from_buffer(userbuf, count, ppos, buf, res); |
| } |
| |
| #define DEBUGFS_DEVSTATS_FILE(name) \ |
| static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\ |
| char *buf, int buflen) \ |
| { \ |
| return scnprintf(buf, buflen, "%u\n", stats->name); \ |
| } \ |
| static ssize_t stats_ ##name## _read(struct file *file, \ |
| char __user *userbuf, \ |
| size_t count, loff_t *ppos) \ |
| { \ |
| return format_devstat_counter(file->private_data, \ |
| userbuf, \ |
| count, \ |
| ppos, \ |
| print_devstats_##name); \ |
| } \ |
| \ |
| static const struct file_operations stats_ ##name## _ops = { \ |
| .read = stats_ ##name## _read, \ |
| .open = simple_open, \ |
| .llseek = generic_file_llseek, \ |
| }; |
| |
| #define DEBUGFS_STATS_ADD(name) \ |
| debugfs_create_u32(#name, 0400, statsd, &local->name); |
| #define DEBUGFS_DEVSTATS_ADD(name) \ |
| debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops); |
| |
| DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount); |
| DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount); |
| DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount); |
| DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount); |
| |
| void debugfs_hw_add(struct ieee80211_local *local) |
| { |
| struct dentry *phyd = local->hw.wiphy->debugfsdir; |
| struct dentry *statsd; |
| |
| if (!phyd) |
| return; |
| |
| local->debugfs.keys = debugfs_create_dir("keys", phyd); |
| |
| DEBUGFS_ADD(total_ps_buffered); |
| DEBUGFS_ADD(wep_iv); |
| DEBUGFS_ADD(queues); |
| #ifdef CONFIG_PM |
| DEBUGFS_ADD_MODE(reset, 0200); |
| #endif |
| DEBUGFS_ADD(hwflags); |
| DEBUGFS_ADD(user_power); |
| DEBUGFS_ADD(power); |
| |
| statsd = debugfs_create_dir("statistics", phyd); |
| |
| /* if the dir failed, don't put all the other things into the root! */ |
| if (!statsd) |
| return; |
| |
| #ifdef CONFIG_MAC80211_DEBUG_COUNTERS |
| DEBUGFS_STATS_ADD(dot11TransmittedFragmentCount); |
| DEBUGFS_STATS_ADD(dot11MulticastTransmittedFrameCount); |
| DEBUGFS_STATS_ADD(dot11FailedCount); |
| DEBUGFS_STATS_ADD(dot11RetryCount); |
| DEBUGFS_STATS_ADD(dot11MultipleRetryCount); |
| DEBUGFS_STATS_ADD(dot11FrameDuplicateCount); |
| DEBUGFS_STATS_ADD(dot11ReceivedFragmentCount); |
| DEBUGFS_STATS_ADD(dot11MulticastReceivedFrameCount); |
| DEBUGFS_STATS_ADD(dot11TransmittedFrameCount); |
| DEBUGFS_STATS_ADD(tx_handlers_drop); |
| DEBUGFS_STATS_ADD(tx_handlers_queued); |
| DEBUGFS_STATS_ADD(tx_handlers_drop_wep); |
| DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc); |
| DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port); |
| DEBUGFS_STATS_ADD(rx_handlers_drop); |
| DEBUGFS_STATS_ADD(rx_handlers_queued); |
| DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc); |
| DEBUGFS_STATS_ADD(rx_handlers_drop_defrag); |
| DEBUGFS_STATS_ADD(tx_expand_skb_head); |
| DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned); |
| DEBUGFS_STATS_ADD(rx_expand_skb_head_defrag); |
| DEBUGFS_STATS_ADD(rx_handlers_fragments); |
| DEBUGFS_STATS_ADD(tx_status_drop); |
| #endif |
| DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount); |
| DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount); |
| DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount); |
| DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount); |
| } |