package/mac80211/patches/500-ath9k_debugfs_chainmask.patch

   1 --- a/drivers/net/wireless/ath/ath9k/debug.c
   2 +++ b/drivers/net/wireless/ath/ath9k/debug.c
   3 @@ -77,6 +77,90 @@ static const struct file_operations fops
   4
   5  #define DMA_BUF_LEN 1024
   6
   7 +static ssize_t read_file_tx_chainmask(struct file *file, char __user *user_buf,
   8 +                            size_t count, loff_t *ppos)
   9 +{
  10 +       struct ath_softc *sc = file->private_data;
  11 +       struct ath_common *common = ath9k_hw_common(sc->sc_ah);
  12 +       char buf[32];
  13 +       unsigned int len;
  14 +
  15 +       len = snprintf(buf, sizeof(buf), "0x%08x\n", common->tx_chainmask);
  16 +       return simple_read_from_buffer(user_buf, count, ppos, buf, len);
  17 +}
  18 +
  19 +static ssize_t write_file_tx_chainmask(struct file *file, const char __user *user_buf,
  20 +                            size_t count, loff_t *ppos)
  21 +{
  22 +       struct ath_softc *sc = file->private_data;
  23 +       struct ath_common *common = ath9k_hw_common(sc->sc_ah);
  24 +       unsigned long mask;
  25 +       char buf[32];
  26 +       ssize_t len;
  27 +
  28 +       len = min(count, sizeof(buf) - 1);
  29 +       if (copy_from_user(buf, user_buf, len))
  30 +               return -EINVAL;
  31 +
  32 +       buf[len] = '\0';
  33 +       if (strict_strtoul(buf, 0, &mask))
  34 +               return -EINVAL;
  35 +
  36 +       common->tx_chainmask = mask;
  37 +       sc->sc_ah->caps.tx_chainmask = mask;
  38 +       return count;
  39 +}
  40 +
  41 +static const struct file_operations fops_tx_chainmask = {
  42 +       .read = read_file_tx_chainmask,
  43 +       .write = write_file_tx_chainmask,
  44 +       .open = ath9k_debugfs_open,
  45 +       .owner = THIS_MODULE
  46 +};
  47 +
  48 +
  49 +static ssize_t read_file_rx_chainmask(struct file *file, char __user *user_buf,
  50 +                            size_t count, loff_t *ppos)
  51 +{
  52 +       struct ath_softc *sc = file->private_data;
  53 +       struct ath_common *common = ath9k_hw_common(sc->sc_ah);
  54 +       char buf[32];
  55 +       unsigned int len;
  56 +
  57 +       len = snprintf(buf, sizeof(buf), "0x%08x\n", common->rx_chainmask);
  58 +       return simple_read_from_buffer(user_buf, count, ppos, buf, len);
  59 +}
  60 +
  61 +static ssize_t write_file_rx_chainmask(struct file *file, const char __user *user_buf,
  62 +                            size_t count, loff_t *ppos)
  63 +{
  64 +       struct ath_softc *sc = file->private_data;
  65 +       struct ath_common *common = ath9k_hw_common(sc->sc_ah);
  66 +       unsigned long mask;
  67 +       char buf[32];
  68 +       ssize_t len;
  69 +
  70 +       len = min(count, sizeof(buf) - 1);
  71 +       if (copy_from_user(buf, user_buf, len))
  72 +               return -EINVAL;
  73 +
  74 +       buf[len] = '\0';
  75 +       if (strict_strtoul(buf, 0, &mask))
  76 +               return -EINVAL;
  77 +
  78 +       common->rx_chainmask = mask;
  79 +       sc->sc_ah->caps.rx_chainmask = mask;
  80 +       return count;
  81 +}
  82 +
  83 +static const struct file_operations fops_rx_chainmask = {
  84 +       .read = read_file_rx_chainmask,
  85 +       .write = write_file_rx_chainmask,
  86 +       .open = ath9k_debugfs_open,
  87 +       .owner = THIS_MODULE
  88 +};
  89 +
  90 +
  91  static ssize_t read_file_dma(struct file *file, char __user *user_buf,
  92                              size_t count, loff_t *ppos)
  93  {
  94 @@ -724,6 +808,16 @@ int ath9k_init_debug(struct ath_hw *ah)
  95                 goto err;
  96  #endif
  97
  98 +       sc->debug.debugfs_rx_chainmask = debugfs_create_file("rx_chainmask",
  99 +               S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, sc, &fops_rx_chainmask);
 100 +       if (!sc->debug.debugfs_rx_chainmask)
 101 +               goto err;
 102 +
 103 +       sc->debug.debugfs_tx_chainmask = debugfs_create_file("tx_chainmask",
 104 +               S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, sc, &fops_tx_chainmask);
 105 +       if (!sc->debug.debugfs_tx_chainmask)
 106 +               goto err;
 107 +
 108         sc->debug.debugfs_dma = debugfs_create_file("dma", S_IRUSR,
 109                                        sc->debug.debugfs_phy, sc, &fops_dma);
 110         if (!sc->debug.debugfs_dma)
 111 @@ -774,6 +868,8 @@ void ath9k_exit_debug(struct ath_hw *ah)
 112         struct ath_common *common = ath9k_hw_common(ah);
 113         struct ath_softc *sc = (struct ath_softc *) common->priv;
 114
 115 +       debugfs_remove(sc->debug.debugfs_tx_chainmask);
 116 +       debugfs_remove(sc->debug.debugfs_rx_chainmask);
 117         debugfs_remove(sc->debug.debugfs_recv);
 118         debugfs_remove(sc->debug.debugfs_xmit);
 119         debugfs_remove(sc->debug.debugfs_wiphy);
 120 --- a/drivers/net/wireless/ath/ath9k/debug.h
 121 +++ b/drivers/net/wireless/ath/ath9k/debug.h
 122 @@ -152,6 +152,8 @@ struct ath_stats {
 123  };
 124
 125  struct ath9k_debug {
 126 +       struct dentry *debugfs_rx_chainmask;
 127 +       struct dentry *debugfs_tx_chainmask;
 128         struct dentry *debugfs_phy;
 129         struct dentry *debugfs_debug;
 130         struct dentry *debugfs_dma;