On Mon, Dec 01, 2014 at 05:48:44PM +0200, Arik Nemtsov wrote:
> If a wiphy-idx is specified, the kernel will return the wiphy specific
> regdomain, if such exists. Otherwise return the global regdom.
>
> When no wiphy-idx is specified, return the global regdomain as well as
> all wiphy-specific regulatory domains in the system, via a new nested
> list of attributes.
>
> Add a new attribute for each wiphy-specific regdomain, for usermode to
> identify it as such.
>
> Signed-off-by: Arik Nemtsov <arikx.nemtsov@xxxxxxxxx>
> ---
> include/uapi/linux/nl80211.h | 11 ++-
> net/wireless/nl80211.c | 178 +++++++++++++++++++++++++++++++++++--------
> net/wireless/reg.c | 2 +-
> net/wireless/reg.h | 1 +
> 4 files changed, 157 insertions(+), 35 deletions(-)
>
> diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
> index b37bd5a..2b03274 100644
> --- a/include/uapi/linux/nl80211.h
> +++ b/include/uapi/linux/nl80211.h
> @@ -252,7 +252,9 @@
> * %NL80211_ATTR_IFINDEX.
> *
> * @NL80211_CMD_GET_REG: ask the wireless core to send us its currently set
> - * regulatory domain.
> + * regulatory domain. If %NL80211_ATTR_WIPHY is specified and the device
> + * has a private regulatory domain, it will be returned. Otherwise, the
> + * global regdomain will be returned.
Its important we clarify here the meaning of what a private regdomain is and
the differenct types there are. Since this is patch 1 and no self managed is
yet added you can just describe that a driver that uses regulatory_hint() may
have a regulatory domain hint first instantiated and used for it, this is the
regdomain that is sent. Even if a regdomain was originally used the wiphy
channel information will still be mended depending on further hints from the
regulatory core to help with compliance.
> @@ -1688,6 +1690,11 @@ enum nl80211_commands {
> *
> * @NL80211_ATTR_MAC_MASK: MAC address mask
> *
> + * @NL80211_ATTR_WIPHY_SELF_MANAGED_REG: flag attribute indicating this device
> + * is self-managing its regulatory information and any regulatory domain
> + * obtained from it is coming from the device's wiphy and not the global
> + * cfg80211 regdomain.
> + *
> * @NUM_NL80211_ATTR: total number of nl80211_attrs available
> * @NL80211_ATTR_MAX: highest attribute number currently defined
> * @__NL80211_ATTR_AFTER_LAST: internal use
> @@ -2045,6 +2052,8 @@ enum nl80211_attrs {
>
> NL80211_ATTR_MAC_MASK,
>
> + NL80211_ATTR_WIPHY_SELF_MANAGED_REG,
> +
This is unused in this patch... it is actually used on patch #3 so it
seems this belongs there.
Luis
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