| freq_reg_info(9) - phpMan
FREQ_REG_INFO(9) Regulatory enforcement infrast FREQ_REG_INFO(9)
NAME
freq_reg_info - get regulatory information for the given frequency
SYNOPSIS
const struct ieee80211_reg_rule * freq_reg_info(struct wiphy * wiphy, u32 center_freq);
ARGUMENTS
wiphy
the wiphy for which we want to process this rule for
center_freq
Frequency in KHz for which we want regulatory information for
DESCRIPTION
Use this function to get the regulatory rule for a specific frequency on a given wireless
device. If the device has a specific regulatory domain it wants to follow we respect that
unless a country IE has been received and processed already.
RETURN
A valid pointer, or, when an error occurs, for example if no rule can be found, the return
value is encoded using ERR_PTR. Use IS_ERR to check and PTR_ERR to obtain the numeric
return value. The numeric return value will be -ERANGE if we determine the given
center_freq does not even have a regulatory rule for a frequency range in the
center_freq's band. See freq_in_rule_band for our current definition of a band -- this is
purely subjective and right now it's 802.11 specific.
AUTHOR
Johannes Berg <johannes AT sipsolutions.net>
Author.
COPYRIGHT
Kernel Hackers Manual 4.8. January 2017 FREQ_REG_INFO(9)
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