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151 lines
4.9 KiB
151 lines
4.9 KiB
/* |
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* Copyright (c) 2008-2011 Atheros Communications Inc. |
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* Copyright (c) 2011 Neratec Solutions AG |
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* |
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* Permission to use, copy, modify, and/or distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#include <linux/debugfs.h> |
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#include <linux/export.h> |
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#include "ath9k.h" |
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#include "dfs_debug.h" |
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#include "../dfs_pattern_detector.h" |
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static struct ath_dfs_pool_stats dfs_pool_stats = { 0 }; |
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#define ATH9K_DFS_STAT(s, p) \ |
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len += scnprintf(buf + len, size - len, "%28s : %10u\n", s, \ |
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sc->debug.stats.dfs_stats.p) |
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#define ATH9K_DFS_POOL_STAT(s, p) \ |
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len += scnprintf(buf + len, size - len, "%28s : %10u\n", s, \ |
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dfs_pool_stats.p); |
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static ssize_t read_file_dfs(struct file *file, char __user *user_buf, |
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size_t count, loff_t *ppos) |
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{ |
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struct ath_softc *sc = file->private_data; |
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struct ath9k_hw_version *hw_ver = &sc->sc_ah->hw_version; |
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char *buf; |
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unsigned int len = 0, size = 8000; |
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ssize_t retval = 0; |
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buf = kzalloc(size, GFP_KERNEL); |
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if (buf == NULL) |
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return -ENOMEM; |
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len += scnprintf(buf + len, size - len, "DFS support for " |
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"macVersion = 0x%x, macRev = 0x%x: %s\n", |
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hw_ver->macVersion, hw_ver->macRev, |
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(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_DFS) ? |
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"enabled" : "disabled"); |
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if (!sc->dfs_detector) { |
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len += scnprintf(buf + len, size - len, |
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"DFS detector not enabled\n"); |
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goto exit; |
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} |
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dfs_pool_stats = sc->dfs_detector->get_stats(sc->dfs_detector); |
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len += scnprintf(buf + len, size - len, "Pulse detector statistics:\n"); |
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ATH9K_DFS_STAT("pulse events reported ", pulses_total); |
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ATH9K_DFS_STAT("invalid pulse events ", pulses_no_dfs); |
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ATH9K_DFS_STAT("DFS pulses detected ", pulses_detected); |
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ATH9K_DFS_STAT("Datalen discards ", datalen_discards); |
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ATH9K_DFS_STAT("RSSI discards ", rssi_discards); |
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ATH9K_DFS_STAT("BW info discards ", bwinfo_discards); |
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ATH9K_DFS_STAT("Primary channel pulses ", pri_phy_errors); |
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ATH9K_DFS_STAT("Secondary channel pulses", ext_phy_errors); |
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ATH9K_DFS_STAT("Dual channel pulses ", dc_phy_errors); |
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len += scnprintf(buf + len, size - len, "Radar detector statistics " |
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"(current DFS region: %d)\n", |
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sc->dfs_detector->region); |
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ATH9K_DFS_STAT("Pulse events processed ", pulses_processed); |
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ATH9K_DFS_STAT("Radars detected ", radar_detected); |
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len += scnprintf(buf + len, size - len, "Global Pool statistics:\n"); |
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ATH9K_DFS_POOL_STAT("Pool references ", pool_reference); |
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ATH9K_DFS_POOL_STAT("Pulses allocated ", pulse_allocated); |
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ATH9K_DFS_POOL_STAT("Pulses alloc error ", pulse_alloc_error); |
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ATH9K_DFS_POOL_STAT("Pulses in use ", pulse_used); |
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ATH9K_DFS_POOL_STAT("Seqs. allocated ", pseq_allocated); |
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ATH9K_DFS_POOL_STAT("Seqs. alloc error ", pseq_alloc_error); |
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ATH9K_DFS_POOL_STAT("Seqs. in use ", pseq_used); |
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exit: |
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if (len > size) |
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len = size; |
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retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); |
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kfree(buf); |
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return retval; |
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} |
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/* magic number to prevent accidental reset of DFS statistics */ |
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#define DFS_STATS_RESET_MAGIC 0x80000000 |
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static ssize_t write_file_dfs(struct file *file, const char __user *user_buf, |
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size_t count, loff_t *ppos) |
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{ |
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struct ath_softc *sc = file->private_data; |
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unsigned long val; |
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char buf[32]; |
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ssize_t len; |
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len = min(count, sizeof(buf) - 1); |
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if (copy_from_user(buf, user_buf, len)) |
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return -EFAULT; |
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buf[len] = '\0'; |
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if (kstrtoul(buf, 0, &val)) |
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return -EINVAL; |
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if (val == DFS_STATS_RESET_MAGIC) |
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memset(&sc->debug.stats.dfs_stats, 0, |
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sizeof(sc->debug.stats.dfs_stats)); |
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return count; |
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} |
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static ssize_t write_file_simulate_radar(struct file *file, |
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const char __user *user_buf, |
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size_t count, loff_t *ppos) |
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{ |
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struct ath_softc *sc = file->private_data; |
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ieee80211_radar_detected(sc->hw); |
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return count; |
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} |
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static const struct file_operations fops_simulate_radar = { |
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.write = write_file_simulate_radar, |
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.open = simple_open, |
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.owner = THIS_MODULE, |
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.llseek = default_llseek, |
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}; |
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static const struct file_operations fops_dfs_stats = { |
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.read = read_file_dfs, |
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.write = write_file_dfs, |
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.open = simple_open, |
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.owner = THIS_MODULE, |
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.llseek = default_llseek, |
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}; |
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void ath9k_dfs_init_debug(struct ath_softc *sc) |
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{ |
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debugfs_create_file("dfs_stats", 0400, |
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sc->debug.debugfs_phy, sc, &fops_dfs_stats); |
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debugfs_create_file("dfs_simulate_radar", 0200, |
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sc->debug.debugfs_phy, sc, &fops_simulate_radar); |
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}
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