diff options
| -rw-r--r-- | net/wireless/reg.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/net/wireless/reg.c b/net/wireless/reg.c index 5f6d20d98eeb..bc494cef2102 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -563,6 +563,7 @@ static struct ieee80211_regdomain *country_ie_2_rd( /* This time around we fill in the rd */ while (country_ie_len >= 3) { + int end_channel = 0; struct ieee80211_country_ie_triplet *triplet = (struct ieee80211_country_ie_triplet *) country_ie; struct ieee80211_reg_rule *reg_rule = NULL; @@ -584,6 +585,23 @@ static struct ieee80211_regdomain *country_ie_2_rd( reg_rule->flags = flags; + /* 2 GHz */ + if (triplet->chans.first_channel <= 14) + end_channel = triplet->chans.first_channel + + triplet->chans.num_channels; + else + /* + * 5 GHz -- For example in country IEs if the first + * channel given is 36 and the number of channels is 4 + * then the individual channel numbers defined for the + * 5 GHz PHY by these parameters are: 36, 40, 44, and 48 + * and not 36, 37, 38, 39. + * + * See: http://tinyurl.com/11d-clarification + */ + end_channel = triplet->chans.first_channel + + (4 * (triplet->chans.num_channels - 1)); + /* The +10 is since the regulatory domain expects * the actual band edge, not the center of freq for * its start and end freqs, assuming 20 MHz bandwidth on @@ -593,8 +611,7 @@ static struct ieee80211_regdomain *country_ie_2_rd( triplet->chans.first_channel) - 10); freq_range->end_freq_khz = MHZ_TO_KHZ(ieee80211_channel_to_frequency( - triplet->chans.first_channel + - triplet->chans.num_channels) + 10); + end_channel) + 10); /* Large arbitrary values, we intersect later */ /* Increment this if we ever support >= 40 MHz channels |