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mac80211: add debugfs interface for U-APSD queue configuration

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Because it's not yet decided how to configure which queues are U-APSD
enabled, add a debugfs interface for testing purposes.

Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Kalle Valo
2010-01-12 10:42:39 +02:00
committed by John W. Linville
parent ab13315af9
commit 50ae0cf15c
5 changed files with 113 additions and 3 deletions
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94
net/mac80211/debugfs.c
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@@ -158,6 +158,98 @@ static const struct file_operations noack_ops = {
.open = mac80211_open_file_generic
};
static ssize_t uapsd_queues_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ieee80211_local *local = file->private_data;
int res;
char buf[10];
res = scnprintf(buf, sizeof(buf), "0x%x\n", local->uapsd_queues);
return simple_read_from_buffer(user_buf, count, ppos, buf, res);
}
static ssize_t uapsd_queues_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ieee80211_local *local = file->private_data;
unsigned long val;
char buf[10];
size_t len;
int ret;
len = min(count, sizeof(buf) - 1);
if (copy_from_user(buf, user_buf, len))
return -EFAULT;
buf[len] = '\0';
ret = strict_strtoul(buf, 0, &val);
if (ret)
return -EINVAL;
if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
return -ERANGE;
local->uapsd_queues = val;
return count;
}
static const struct file_operations uapsd_queues_ops = {
.read = uapsd_queues_read,
.write = uapsd_queues_write,
.open = mac80211_open_file_generic
};
static ssize_t uapsd_max_sp_len_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ieee80211_local *local = file->private_data;
int res;
char buf[10];
res = scnprintf(buf, sizeof(buf), "0x%x\n", local->uapsd_max_sp_len);
return simple_read_from_buffer(user_buf, count, ppos, buf, res);
}
static ssize_t uapsd_max_sp_len_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ieee80211_local *local = file->private_data;
unsigned long val;
char buf[10];
size_t len;
int ret;
len = min(count, sizeof(buf) - 1);
if (copy_from_user(buf, user_buf, len))
return -EFAULT;
buf[len] = '\0';
ret = strict_strtoul(buf, 0, &val);
if (ret)
return -EINVAL;
if (val & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
return -ERANGE;
local->uapsd_max_sp_len = val;
return count;
}
static const struct file_operations uapsd_max_sp_len_ops = {
.read = uapsd_max_sp_len_read,
.write = uapsd_max_sp_len_write,
.open = mac80211_open_file_generic
};
static ssize_t queues_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
@@ -314,6 +406,8 @@ void debugfs_hw_add(struct ieee80211_local *local)
DEBUGFS_ADD(queues);
DEBUGFS_ADD_MODE(reset, 0200);
DEBUGFS_ADD(noack);
DEBUGFS_ADD(uapsd_queues);
DEBUGFS_ADD(uapsd_max_sp_len);
statsd = debugfs_create_dir("statistics", phyd);