diff options
| -rw-r--r-- | net/mac80211/debugfs.c | 56 |
1 files changed, 54 insertions, 2 deletions
diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c index ad41d74530c6..54080290d6e2 100644 --- a/net/mac80211/debugfs.c +++ b/net/mac80211/debugfs.c @@ -150,6 +150,59 @@ static const struct file_operations aqm_ops = { .llseek = default_llseek, }; +static ssize_t airtime_flags_read(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ieee80211_local *local = file->private_data; + char buf[128] = {}, *pos, *end; + + pos = buf; + end = pos + sizeof(buf) - 1; + + if (local->airtime_flags & AIRTIME_USE_TX) + pos += scnprintf(pos, end - pos, "AIRTIME_TX\t(%lx)\n", + AIRTIME_USE_TX); + if (local->airtime_flags & AIRTIME_USE_RX) + pos += scnprintf(pos, end - pos, "AIRTIME_RX\t(%lx)\n", + AIRTIME_USE_RX); + + return simple_read_from_buffer(user_buf, count, ppos, buf, + strlen(buf)); +} + +static ssize_t airtime_flags_write(struct file *file, + const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ieee80211_local *local = file->private_data; + char buf[16]; + size_t len; + + if (count > sizeof(buf)) + return -EINVAL; + + if (copy_from_user(buf, user_buf, count)) + return -EFAULT; + + buf[sizeof(buf) - 1] = 0; + len = strlen(buf); + if (len > 0 && buf[len - 1] == '\n') + buf[len - 1] = 0; + + if (kstrtou16(buf, 0, &local->airtime_flags)) + return -EINVAL; + + return count; +} + +static const struct file_operations airtime_flags_ops = { + .write = airtime_flags_write, + .read = airtime_flags_read, + .open = simple_open, + .llseek = default_llseek, +}; + static ssize_t aql_txq_limit_read(struct file *file, char __user *user_buf, size_t count, @@ -522,8 +575,7 @@ void debugfs_hw_add(struct ieee80211_local *local) if (local->ops->wake_tx_queue) DEBUGFS_ADD_MODE(aqm, 0600); - debugfs_create_u16("airtime_flags", 0600, - phyd, &local->airtime_flags); + DEBUGFS_ADD_MODE(airtime_flags, 0600); DEBUGFS_ADD(aql_txq_limit); debugfs_create_u32("aql_threshold", 0600, |