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{cfg,mac}80211: move mandatory rates calculation to cfg80211

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Move mandatory rates calculation to cfg80211, shared with non mac80211 drivers.

Signed-off-by: Ashok Nagarajan <ashok@cozybit.com>
[extend documentation]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Ashok Nagarajan 2013-05-10 17:50:51 -07:00 • committed by Johannes Berg
parent d4a5a48976
commit b422c6cd7e
6 changed files with 42 additions and 34 deletions
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23
net/wireless/util.c
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@ -33,6 +33,29 @@ ieee80211_get_response_rate(struct ieee80211_supported_band *sband,
}
EXPORT_SYMBOL(ieee80211_get_response_rate);
u32 ieee80211_mandatory_rates(struct ieee80211_supported_band *sband)
{
struct ieee80211_rate *bitrates;
u32 mandatory_rates = 0;
enum ieee80211_rate_flags mandatory_flag;
int i;
if (WARN_ON(!sband))
return 1;
if (sband->band == IEEE80211_BAND_2GHZ)
mandatory_flag = IEEE80211_RATE_MANDATORY_B;
else
mandatory_flag = IEEE80211_RATE_MANDATORY_A;
bitrates = sband->bitrates;
for (i = 0; i < sband->n_bitrates; i++)
if (bitrates[i].flags & mandatory_flag)
mandatory_rates |= BIT(i);
return mandatory_rates;
}
EXPORT_SYMBOL(ieee80211_mandatory_rates);
int ieee80211_channel_to_frequency(int chan, enum ieee80211_band band)
{
/* see 802.11 17.3.8.3.2 and Annex J