diff options
Diffstat (limited to 'net/wireless')
-rw-r--r-- | net/wireless/util.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/net/wireless/util.c b/net/wireless/util.c index b11052be09be..0962f107f57f 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c | |||
@@ -33,6 +33,29 @@ ieee80211_get_response_rate(struct ieee80211_supported_band *sband, | |||
33 | } | 33 | } |
34 | EXPORT_SYMBOL(ieee80211_get_response_rate); | 34 | EXPORT_SYMBOL(ieee80211_get_response_rate); |
35 | 35 | ||
36 | u32 ieee80211_mandatory_rates(struct ieee80211_supported_band *sband) | ||
37 | { | ||
38 | struct ieee80211_rate *bitrates; | ||
39 | u32 mandatory_rates = 0; | ||
40 | enum ieee80211_rate_flags mandatory_flag; | ||
41 | int i; | ||
42 | |||
43 | if (WARN_ON(!sband)) | ||
44 | return 1; | ||
45 | |||
46 | if (sband->band == IEEE80211_BAND_2GHZ) | ||
47 | mandatory_flag = IEEE80211_RATE_MANDATORY_B; | ||
48 | else | ||
49 | mandatory_flag = IEEE80211_RATE_MANDATORY_A; | ||
50 | |||
51 | bitrates = sband->bitrates; | ||
52 | for (i = 0; i < sband->n_bitrates; i++) | ||
53 | if (bitrates[i].flags & mandatory_flag) | ||
54 | mandatory_rates |= BIT(i); | ||
55 | return mandatory_rates; | ||
56 | } | ||
57 | EXPORT_SYMBOL(ieee80211_mandatory_rates); | ||
58 | |||
36 | int ieee80211_channel_to_frequency(int chan, enum ieee80211_band band) | 59 | int ieee80211_channel_to_frequency(int chan, enum ieee80211_band band) |
37 | { | 60 | { |
38 | /* see 802.11 17.3.8.3.2 and Annex J | 61 | /* see 802.11 17.3.8.3.2 and Annex J |