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