diff options
Diffstat (limited to 'net/wireless')
| -rw-r--r-- | net/wireless/reg.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/net/wireless/reg.c b/net/wireless/reg.c index 5fae296a6a58..6e94f6934a0e 100644 --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -4,6 +4,7 @@ * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> * Copyright 2008-2011 Luis R. Rodriguez <mcgrof@qca.qualcomm.com> * Copyright 2013-2014 Intel Mobile Communications GmbH + * Copyright 2017 Intel Deutschland GmbH * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above @@ -1483,7 +1484,9 @@ static void reg_process_ht_flags_channel(struct wiphy *wiphy, { struct ieee80211_supported_band *sband = wiphy->bands[channel->band]; struct ieee80211_channel *channel_before = NULL, *channel_after = NULL; + const struct ieee80211_regdomain *regd; unsigned int i; + u32 flags; if (!is_ht40_allowed(channel)) { channel->flags |= IEEE80211_CHAN_NO_HT40; @@ -1503,17 +1506,30 @@ static void reg_process_ht_flags_channel(struct wiphy *wiphy, channel_after = c; } + flags = 0; + regd = get_wiphy_regdom(wiphy); + if (regd) { + const struct ieee80211_reg_rule *reg_rule = + freq_reg_info_regd(MHZ_TO_KHZ(channel->center_freq), + regd, MHZ_TO_KHZ(20)); + + if (!IS_ERR(reg_rule)) + flags = reg_rule->flags; + } + /* * Please note that this assumes target bandwidth is 20 MHz, * if that ever changes we also need to change the below logic * to include that as well. */ - if (!is_ht40_allowed(channel_before)) + if (!is_ht40_allowed(channel_before) || + flags & NL80211_RRF_NO_HT40MINUS) channel->flags |= IEEE80211_CHAN_NO_HT40MINUS; else channel->flags &= ~IEEE80211_CHAN_NO_HT40MINUS; - if (!is_ht40_allowed(channel_after)) + if (!is_ht40_allowed(channel_after) || + flags & NL80211_RRF_NO_HT40PLUS) channel->flags |= IEEE80211_CHAN_NO_HT40PLUS; else channel->flags &= ~IEEE80211_CHAN_NO_HT40PLUS; |