diff options
| author | Luis R. Rodriguez <lrodriguez@atheros.com> | 2009-01-07 17:43:37 -0800 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-01-16 17:08:24 -0500 |
| commit | 02e68a3da0fbdb178cdec54b7db48edeefd1691d (patch) | |
| tree | 556573da26818fbfb7edac0f1ccc989fe6674611 /net | |
| parent | 0c7dc45d21de6ae212b5ccb7cdff5beff795ccf0 (diff) | |
| download | linux-02e68a3da0fbdb178cdec54b7db48edeefd1691d.tar.gz linux-02e68a3da0fbdb178cdec54b7db48edeefd1691d.tar.bz2 linux-02e68a3da0fbdb178cdec54b7db48edeefd1691d.zip | |
cfg80211: Fix parsed country IE info for 5 GHz
The country IE number of channels on 5 GHz specifies the number
of 5 GHz channels, not the number of sequential channel numbers.
For example, if in a country IEs if the first channel given is 36
and the number of channels passed is 4 then the individual channel
numbers defined for the 5 GHz PHY by these parameters
are: 36, 40, 44, 48
not: 36, 37, 38, 39
See: http://tinyurl.com/11d-clarification
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net')
| -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 |