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cfg80211: allow usermode to query wiphy specific regdom

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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@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Arik Nemtsov
2014-12-15 19:25:59 +02:00
committed by Johannes Berg
parent 2ae70efcea
commit ad30ca2c03
4 changed files with 151 additions and 35 deletions
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10
include/uapi/linux/nl80211.h
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@@ -252,7 +252,15 @@
* %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.
* A device will have a private regulatory domain if it uses the
* regulatory_hint() API. Even when a private regdomain is used the channel
* information will still be mended according to further hints from
* the regulatory core to help with compliance. A dump version of this API
* is now available which will returns the global regdomain as well as
* all private regdomains of present wiphys (for those that have it).
* @NL80211_CMD_SET_REG: Set current regulatory domain. CRDA sends this command
* after being queried by the kernel. CRDA replies by sending a regulatory
* domain structure which consists of %NL80211_ATTR_REG_ALPHA set to our