This file can be used to fetch endpoint statistics counters and
to clear them by writing 0 to it.
Signed-off-by: Jouni Malinen <jouni@xxxxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath6kl/debug.c | 102 +++++++++++++++++++++++++++++++
1 files changed, 102 insertions(+), 0 deletions(-)
diff --git a/drivers/net/wireless/ath/ath6kl/debug.c b/drivers/net/wireless/ath/ath6kl/debug.c
index ba3f23d..b9bf28d 100644
--- a/drivers/net/wireless/ath/ath6kl/debug.c
+++ b/drivers/net/wireless/ath/ath6kl/debug.c
@@ -595,6 +595,105 @@ static const struct file_operations fops_credit_dist_stats = {
.llseek = default_llseek,
};
+static unsigned int print_endpoint_stat(struct htc_target *target, char *buf,
+ unsigned int buf_len, unsigned int len,
+ int offset, const char *name)
+{
+ int i;
+ struct htc_endpoint_stats *ep_st;
+ u32 *counter;
+
+ len += scnprintf(buf + len, buf_len - len, "%s:", name);
+ for (i = 0; i < ENDPOINT_MAX; i++) {
+ ep_st = &target->endpoint[i].ep_st;
+ counter = ((u32 *) ep_st) + (offset / 4);
+ len += scnprintf(buf + len, buf_len - len, " %u", *counter);
+ }
+ len += scnprintf(buf + len, buf_len - len, "\n");
+
+ return len;
+}
+
+static ssize_t ath6kl_endpoint_stats_read(struct file *file,
+ char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath6kl *ar = file->private_data;
+ struct htc_target *target = ar->htc_target;
+ char *buf;
+ unsigned int buf_len, len = 0;
+ ssize_t ret_cnt;
+
+ buf_len = 1000 + ENDPOINT_MAX * 100;
+ buf = kzalloc(buf_len, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+#define EPSTAT(name) \
+ len = print_endpoint_stat(target, buf, buf_len, len, \
+ offsetof(struct htc_endpoint_stats, name), \
+ #name)
+ EPSTAT(cred_low_indicate);
+ EPSTAT(tx_issued);
+ EPSTAT(tx_pkt_bundled);
+ EPSTAT(tx_bundles);
+ EPSTAT(tx_dropped);
+ EPSTAT(tx_cred_rpt);
+ EPSTAT(cred_rpt_from_rx);
+ EPSTAT(cred_rpt_ep0);
+ EPSTAT(cred_from_rx);
+ EPSTAT(cred_from_other);
+ EPSTAT(cred_from_ep0);
+ EPSTAT(cred_cosumd);
+ EPSTAT(cred_retnd);
+ EPSTAT(rx_pkts);
+ EPSTAT(rx_lkahds);
+ EPSTAT(rx_bundl);
+ EPSTAT(rx_bundle_lkahd);
+ EPSTAT(rx_bundle_from_hdr);
+ EPSTAT(rx_alloc_thresh_hit);
+ EPSTAT(rxalloc_thresh_byte);
+#undef EPSTAT
+
+ if (len > buf_len)
+ len = buf_len;
+
+ ret_cnt = simple_read_from_buffer(user_buf, count, ppos, buf, len);
+ kfree(buf);
+ return ret_cnt;
+}
+
+static ssize_t ath6kl_endpoint_stats_write(struct file *file,
+ const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath6kl *ar = file->private_data;
+ struct htc_target *target = ar->htc_target;
+ int ret, i;
+ u32 val;
+ struct htc_endpoint_stats *ep_st;
+
+ ret = kstrtou32_from_user(user_buf, count, 0, &val);
+ if (ret)
+ return ret;
+ if (val == 0) {
+ for (i = 0; i < ENDPOINT_MAX; i++) {
+ ep_st = &target->endpoint[i].ep_st;
+ memset(ep_st, 0, sizeof(*ep_st));
+ }
+ }
+
+ return count;
+}
+
+static const struct file_operations fops_endpoint_stats = {
+ .open = ath6kl_debugfs_open,
+ .read = ath6kl_endpoint_stats_read,
+ .write = ath6kl_endpoint_stats_write,
+ .owner = THIS_MODULE,
+ .llseek = default_llseek,
+};
+
static unsigned long ath6kl_get_num_reg(void)
{
int i;
@@ -901,6 +1000,9 @@ int ath6kl_debug_init(struct ath6kl *ar)
debugfs_create_file("credit_dist_stats", S_IRUSR, ar->debugfs_phy, ar,
&fops_credit_dist_stats);
+ debugfs_create_file("endpoint_stats", S_IRUSR | S_IWUSR,
+ ar->debugfs_phy, ar, &fops_endpoint_stats);
+
debugfs_create_file("fwlog", S_IRUSR, ar->debugfs_phy, ar,
&fops_fwlog);
--
1.7.4.1
--
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