diff options
Diffstat (limited to 'net/wireless/nl80211.c')
| -rw-r--r-- | net/wireless/nl80211.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index fce423a4e96a..ca75f60041d2 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -567,6 +567,13 @@ static int nl80211_msg_put_channel(struct sk_buff *msg, struct ieee80211_channel *chan, bool large) { + /* Some channels must be completely excluded from the + * list to protect old user-space tools from breaking + */ + if (!large && chan->flags & + (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ)) + return 0; + if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ, chan->center_freq)) goto nla_put_failure; @@ -620,6 +627,12 @@ static int nl80211_msg_put_channel(struct sk_buff *msg, if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) && nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT)) goto nla_put_failure; + if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) && + nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ)) + goto nla_put_failure; + if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) && + nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ)) + goto nla_put_failure; } if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, |