ath9k: extend DFS detector stats in dfs_debugfs
Extend debugfs entry for dfs_stats with DFS detection events
and shared pool statistics.
Signed-off-by: Zefir Kurtisi <zefir.kurtisi@neratec.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/dfs_debug.c b/drivers/net/wireless/ath/ath9k/dfs_debug.c
index 4364c10..55d2807 100644
--- a/drivers/net/wireless/ath/ath9k/dfs_debug.c
+++ b/drivers/net/wireless/ath/ath9k/dfs_debug.c
@@ -21,9 +21,15 @@
#include "ath9k.h"
#include "dfs_debug.h"
+
+struct ath_dfs_pool_stats global_dfs_pool_stats = { 0 };
+
#define ATH9K_DFS_STAT(s, p) \
len += snprintf(buf + len, size - len, "%28s : %10u\n", s, \
sc->debug.stats.dfs_stats.p);
+#define ATH9K_DFS_POOL_STAT(s, p) \
+ len += snprintf(buf + len, size - len, "%28s : %10u\n", s, \
+ global_dfs_pool_stats.p);
static ssize_t read_file_dfs(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
@@ -43,6 +49,9 @@
hw_ver->macVersion, hw_ver->macRev,
(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_DFS) ?
"enabled" : "disabled");
+ len += snprintf(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);
@@ -50,6 +59,18 @@
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 += snprintf(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 += snprintf(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);
if (len > size)
len = size;
@@ -60,8 +81,33 @@
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 (strict_strtoul(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 const struct file_operations fops_dfs_stats = {
.read = read_file_dfs,
+ .write = write_file_dfs,
.open = simple_open,
.owner = THIS_MODULE,
.llseek = default_llseek,