diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/mac80211/rx.c | 6 | ||||
| -rw-r--r-- | net/mac80211/tx.c | 7 | ||||
| -rw-r--r-- | net/wireless/chan.c | 54 |
3 files changed, 66 insertions, 1 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 902b03ee8f6..54fb4a0e76f 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -2247,6 +2247,10 @@ ieee80211_rx_h_mgmt(struct ieee80211_rx_data *rx) break; case cpu_to_le16(IEEE80211_STYPE_DEAUTH): case cpu_to_le16(IEEE80211_STYPE_DISASSOC): + if (is_multicast_ether_addr(mgmt->da) && + !is_broadcast_ether_addr(mgmt->da)) + return RX_DROP_MONITOR; + /* process only for station */ if (sdata->vif.type != NL80211_IFTYPE_STATION) return RX_DROP_MONITOR; @@ -2741,6 +2745,7 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw, if (ieee80211_prepare_and_rx_handle(&rx, skb, true)) return; + goto out; } } @@ -2780,6 +2785,7 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw, return; } + out: dev_kfree_skb(skb); } diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 96c59430950..df6aac52353 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -1587,7 +1587,12 @@ static void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, list) { if (!ieee80211_sdata_running(tmp_sdata)) continue; - if (tmp_sdata->vif.type != NL80211_IFTYPE_AP) + if (tmp_sdata->vif.type == + NL80211_IFTYPE_MONITOR || + tmp_sdata->vif.type == + NL80211_IFTYPE_AP_VLAN || + tmp_sdata->vif.type == + NL80211_IFTYPE_WDS) continue; if (compare_ether_addr(tmp_sdata->vif.addr, hdr->addr2) == 0) { diff --git a/net/wireless/chan.c b/net/wireless/chan.c index d0c92dddb26..17cd0c04d13 100644 --- a/net/wireless/chan.c +++ b/net/wireless/chan.c @@ -44,6 +44,38 @@ rdev_freq_to_chan(struct cfg80211_registered_device *rdev, return chan; } +static bool can_beacon_sec_chan(struct wiphy *wiphy, + struct ieee80211_channel *chan, + enum nl80211_channel_type channel_type) +{ + struct ieee80211_channel *sec_chan; + int diff; + + switch (channel_type) { + case NL80211_CHAN_HT40PLUS: + diff = 20; + break; + case NL80211_CHAN_HT40MINUS: + diff = -20; + break; + default: + return false; + } + + sec_chan = ieee80211_get_channel(wiphy, chan->center_freq + diff); + if (!sec_chan) + return false; + + /* we'll need a DFS capability later */ + if (sec_chan->flags & (IEEE80211_CHAN_DISABLED | + IEEE80211_CHAN_PASSIVE_SCAN | + IEEE80211_CHAN_NO_IBSS | + IEEE80211_CHAN_RADAR)) + return false; + + return true; +} + int cfg80211_set_freq(struct cfg80211_registered_device *rdev, struct wireless_dev *wdev, int freq, enum nl80211_channel_type channel_type) @@ -68,6 +100,28 @@ int cfg80211_set_freq(struct cfg80211_registered_device *rdev, if (!chan) return -EINVAL; + /* Both channels should be able to initiate communication */ + if (wdev && (wdev->iftype == NL80211_IFTYPE_ADHOC || + wdev->iftype == NL80211_IFTYPE_AP || + wdev->iftype == NL80211_IFTYPE_AP_VLAN || + wdev->iftype == NL80211_IFTYPE_MESH_POINT || + wdev->iftype == NL80211_IFTYPE_P2P_GO)) { + switch (channel_type) { + case NL80211_CHAN_HT40PLUS: + case NL80211_CHAN_HT40MINUS: + if (!can_beacon_sec_chan(&rdev->wiphy, chan, + channel_type)) { + printk(KERN_DEBUG + "cfg80211: Secondary channel not " + "allowed to initiate communication\n"); + return -EINVAL; + } + break; + default: + break; + } + } + result = rdev->ops->set_channel(&rdev->wiphy, wdev ? wdev->netdev : NULL, chan, channel_type); |