package/kernel/mac80211/patches/120-cfg80211_allow_perm_addr_change.patch

   1 --- a/net/wireless/sysfs.c
   2 +++ b/net/wireless/sysfs.c
   3 @@ -24,18 +24,35 @@ static inline struct cfg80211_registered
   4         return container_of(dev, struct cfg80211_registered_device, wiphy.dev);
   5  }
   6
   7 -#define SHOW_FMT(name, fmt, member)                                    \
   8 +#define SHOW_FMT(name, fmt, member, mode)                              \
   9  static ssize_t name ## _show(struct device *dev,                       \
  10                               struct device_attribute *attr,            \
  11                               char *buf)                                \
  12  {                                                                      \
  13         return sprintf(buf, fmt "\n", dev_to_rdev(dev)->member);        \
  14  }                                                                      \
  15 -static DEVICE_ATTR_RO(name)
  16 +static DEVICE_ATTR_##mode(name)
  17
  18 -SHOW_FMT(index, "%d", wiphy_idx);
  19 -SHOW_FMT(macaddress, "%pM", wiphy.perm_addr);
  20 -SHOW_FMT(address_mask, "%pM", wiphy.addr_mask);
  21 +static ssize_t macaddress_store(struct device *dev,
  22 +                               struct device_attribute *attr,
  23 +                               const char *buf, size_t len)
  24 +{
  25 +       u8 mac[ETH_ALEN];
  26 +
  27 +       if (!mac_pton(buf, mac))
  28 +               return -EINVAL;
  29 +
  30 +       if (buf[3 * ETH_ALEN - 1] && buf[3 * ETH_ALEN - 1] != '\n')
  31 +               return -EINVAL;
  32 +
  33 +       memcpy(dev_to_rdev(dev)->wiphy.perm_addr, mac, ETH_ALEN);
  34 +
  35 +       return strnlen(buf, len);
  36 +}
  37 +
  38 +SHOW_FMT(index, "%d", wiphy_idx, RO);
  39 +SHOW_FMT(macaddress, "%pM", wiphy.perm_addr, RW);
  40 +SHOW_FMT(address_mask, "%pM", wiphy.addr_mask, RO);
  41
  42  static ssize_t name_show(struct device *dev,
  43                          struct device_attribute *attr,