wifi: cfg80211: add helper for checking if a chandef is valid on a radio
Check if the full channel width is in the radio's frequency range. Signed-off-by: Felix Fietkau <nbd@nbd.name> Link: https://patch.msgid.link/7c8ea146feb6f37cee62e5ba6be5370403695797.1720514221.git-series.nbd@nbd.name [add missing Return: documentation] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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@ -6508,6 +6508,17 @@ static inline bool cfg80211_channel_is_psc(struct ieee80211_channel *chan)
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return ieee80211_frequency_to_channel(chan->center_freq) % 16 == 5;
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return ieee80211_frequency_to_channel(chan->center_freq) % 16 == 5;
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}
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}
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/**
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* cfg80211_radio_chandef_valid - Check if the radio supports the chandef
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*
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* @radio: wiphy radio
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* @chandef: chandef for current channel
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*
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* Return: whether or not the given chandef is valid for the given radio
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*/
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bool cfg80211_radio_chandef_valid(const struct wiphy_radio *radio,
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const struct cfg80211_chan_def *chandef);
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/**
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/**
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* ieee80211_get_response_rate - get basic rate for a given rate
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* ieee80211_get_response_rate - get basic rate for a given rate
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*
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*
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@ -2886,3 +2886,38 @@ cfg80211_get_iftype_ext_capa(struct wiphy *wiphy, enum nl80211_iftype type)
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return NULL;
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return NULL;
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}
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}
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EXPORT_SYMBOL(cfg80211_get_iftype_ext_capa);
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EXPORT_SYMBOL(cfg80211_get_iftype_ext_capa);
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static bool
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ieee80211_radio_freq_range_valid(const struct wiphy_radio *radio,
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u32 freq, u32 width)
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{
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const struct wiphy_radio_freq_range *r;
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int i;
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for (i = 0; i < radio->n_freq_range; i++) {
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r = &radio->freq_range[i];
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if (freq - width / 2 >= r->start_freq &&
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freq + width / 2 <= r->end_freq)
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return true;
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}
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return false;
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}
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bool cfg80211_radio_chandef_valid(const struct wiphy_radio *radio,
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const struct cfg80211_chan_def *chandef)
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{
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u32 freq, width;
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freq = ieee80211_chandef_to_khz(chandef);
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width = nl80211_chan_width_to_mhz(chandef->width);
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if (!ieee80211_radio_freq_range_valid(radio, freq, width))
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return false;
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freq = MHZ_TO_KHZ(chandef->center_freq2);
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if (freq && !ieee80211_radio_freq_range_valid(radio, freq, width))
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return false;
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return true;
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}
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EXPORT_SYMBOL(cfg80211_radio_chandef_valid);
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