REGULATORY_HINT(9)                Regulatory enforcement infrast               REGULATORY_HINT(9)



NAME
       regulatory_hint - driver hint to the wireless core a regulatory domain

SYNOPSIS
       int regulatory_hint(struct wiphy * wiphy, const char * alpha2);

ARGUMENTS
       wiphy
           the wireless device giving the hint (used only for reporting conflicts)

       alpha2
           the ISO/IEC 3166 alpha2 the driver claims its regulatory domain should be in. If rd is
           set this should be NULL. Note that if you set this to NULL you should still set
           rd->alpha2 to some accepted alpha2.

DESCRIPTION
       Wireless drivers can use this function to hint to the wireless core what it believes
       should be the current regulatory domain by giving it an ISO/IEC 3166 alpha2 country code
       it knows its regulatory domain should be in or by providing a completely build regulatory
       domain. If the driver provides an ISO/IEC 3166 alpha2 userspace will be queried for a
       regulatory domain structure for the respective country.

       The wiphy must have been registered to cfg80211 prior to this call. For cfg80211 drivers
       this means you must first use wiphy_register, for mac80211 drivers you must first use
       ieee80211_register_hw.

       Drivers should check the return value, its possible you can get an -ENOMEM.

RETURN
       0 on success. -ENOMEM.

AUTHOR
       Johannes Berg <johannes AT sipsolutions.net>
           Author.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                        REGULATORY_HINT(9)