kvmfornfv -

Age	Commit message (Expand)	Author	Files	Lines
2016-04-13	These changes are the raw update to linux-4.4.6-rt14. Kernel sources	José Pekkarinen	3	-0/+134

/* * 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[NUM_IEEE80211_HW_FLAGS + 1] = { #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), /* keep last for the build bug below */ (void *)0x1 #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(hw_flag_names[NUM_IEEE80211_HW_FLAGS] != (void *)0x1); 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); }