diff options
Diffstat (limited to 'include/net')
-rw-r--r-- | include/net/cfg80211.h | 73 |
1 files changed, 69 insertions, 4 deletions
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 86f777af79e8..977da58fb7ea 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -308,21 +308,86 @@ struct key_params { /** * struct cfg80211_chan_def - channel definition * @chan: the (control) channel - * @_type: the channel type, don't use this field, - * use cfg80211_get_chandef_type() if needed. + * @width: channel width + * @center_freq1: center frequency of first segment + * @center_freq2: center frequency of second segment + * (only with 80+80 MHz) */ struct cfg80211_chan_def { struct ieee80211_channel *chan; - enum nl80211_channel_type _type; + enum nl80211_chan_width width; + u32 center_freq1; + u32 center_freq2; }; +/** + * cfg80211_get_chandef_type - return old channel type from chandef + * @chandef: the channel definition + * + * Returns the old channel type (NOHT, HT20, HT40+/-) from a given + * chandef, which must have a bandwidth allowing this conversion. + */ static inline enum nl80211_channel_type cfg80211_get_chandef_type(const struct cfg80211_chan_def *chandef) { - return chandef->_type; + switch (chandef->width) { + case NL80211_CHAN_WIDTH_20_NOHT: + return NL80211_CHAN_NO_HT; + case NL80211_CHAN_WIDTH_20: + return NL80211_CHAN_HT20; + case NL80211_CHAN_WIDTH_40: + if (chandef->center_freq1 > chandef->chan->center_freq) + return NL80211_CHAN_HT40PLUS; + return NL80211_CHAN_HT40MINUS; + default: + WARN_ON(1); + return NL80211_CHAN_NO_HT; + } +} + +/** + * cfg80211_chandef_create - create channel definition using channel type + * @chandef: the channel definition struct to fill + * @channel: the control channel + * @chantype: the channel type + * + * Given a channel type, create a channel definition. + */ +void cfg80211_chandef_create(struct cfg80211_chan_def *chandef, + struct ieee80211_channel *channel, + enum nl80211_channel_type chantype); + +/** + * cfg80211_chandef_identical - check if two channel definitions are identical + * @chandef1: first channel definition + * @chandef2: second channel definition + * + * Returns %true if the channels defined by the channel definitions are + * identical, %false otherwise. + */ +static inline bool +cfg80211_chandef_identical(const struct cfg80211_chan_def *chandef1, + const struct cfg80211_chan_def *chandef2) +{ + return (chandef1->chan == chandef2->chan && + chandef1->width == chandef2->width && + chandef1->center_freq1 == chandef2->center_freq1 && + chandef1->center_freq2 == chandef2->center_freq2); } /** + * cfg80211_chandef_compatible - check if two channel definitions are compatible + * @chandef1: first channel definition + * @chandef2: second channel definition + * + * Returns %NULL if the given channel definitions are incompatible, + * chandef1 or chandef2 otherwise. + */ +const struct cfg80211_chan_def * +cfg80211_chandef_compatible(const struct cfg80211_chan_def *chandef1, + const struct cfg80211_chan_def *chandef2); + +/** * enum survey_info_flags - survey information flags * * @SURVEY_INFO_NOISE_DBM: noise (in dBm) was filled in |