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ath6kl: Fix listen interval handling

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This patch addresses a few problems with the commit:

"ath6kl: Implement support for listen interval from userspace"

* The debugfs file required for reading/writing the listen interval
  wasn't created. Fix this.

* The interface index was being hardcoded to zero. Fix this.

* Two separate parameters, "listen_interval_time and listen_interval_beacons"
  were being used. This fails to work as expected because the FW assigns
  higher precedence to "listen_interval_beacons" and "listen_interval_time"
  ends up being never used at all.

  To handle this, fix the host driver to exclusively use listen interval
  based on units of beacon intervals.

To set the listen interval, a user would now do something like this:

echo "10" > /sys/kernel/debug/ieee80211/*/ath6kl/listen_interval

kvalo: fix two checkpatch warnings

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Sujith Manoharan
2012-01-10 09:54:10 +05:30
committed by Kalle Valo
parent cbec267a51
commit 8232736dab
4 changed files with 24 additions and 33 deletions
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44
drivers/net/wireless/ath/ath6kl/debug.c
View File

@@ -1505,57 +1505,46 @@ static const struct file_operations fops_bgscan_int = {
};
static ssize_t ath6kl_listen_int_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath6kl *ar = file->private_data;
u16 listen_int_t, listen_int_b;
struct ath6kl_vif *vif;
u16 listen_interval;
char buf[32];
char *sptr, *token;
ssize_t len;
vif = ath6kl_vif_first(ar);
if (!vif)
return -EIO;
len = min(count, sizeof(buf) - 1);
if (copy_from_user(buf, user_buf, len))
return -EFAULT;
buf[len] = '\0';
sptr = buf;
token = strsep(&sptr, " ");
if (!token)
if (kstrtou16(buf, 0, &listen_interval))
return -EINVAL;
if (kstrtou16(token, 0, &listen_int_t))
if ((listen_interval < 1) || (listen_interval > 50))
return -EINVAL;
if (kstrtou16(sptr, 0, &listen_int_b))
return -EINVAL;
if ((listen_int_t < 15) || (listen_int_t > 5000))
return -EINVAL;
if ((listen_int_b < 1) || (listen_int_b > 50))
return -EINVAL;
ar->listen_intvl_t = listen_int_t;
ar->listen_intvl_b = listen_int_b;
ath6kl_wmi_listeninterval_cmd(ar->wmi, 0, ar->listen_intvl_t,
ar->listen_intvl_b = listen_interval;
ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx, 0,
ar->listen_intvl_b);
return count;
}
static ssize_t ath6kl_listen_int_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath6kl *ar = file->private_data;
char buf[32];
int len;
len = scnprintf(buf, sizeof(buf), "%u %u\n", ar->listen_intvl_t,
ar->listen_intvl_b);
len = scnprintf(buf, sizeof(buf), "%u\n", ar->listen_intvl_b);
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
@@ -1710,6 +1699,9 @@ int ath6kl_debug_init(struct ath6kl *ar)
debugfs_create_file("bgscan_interval", S_IWUSR,
ar->debugfs_phy, ar, &fops_bgscan_int);
debugfs_create_file("listen_interval", S_IRUSR | S_IWUSR,
ar->debugfs_phy, ar, &fops_listen_int);
debugfs_create_file("power_params", S_IWUSR, ar->debugfs_phy, ar,
&fops_power_params);