mac80211: support extended channel switch

Support extended channel switch when the operating
class is one of the global operating classes as
defined in Annex E of 802.11-2012. If it isn't,
disconnect from the AP instead.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 1d6217ac3ba3..e4a6d559372d 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -863,6 +863,13 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
                         }
                         elems->ch_switch_ie = (void *)pos;
                         break;
+                case WLAN_EID_EXT_CHANSWITCH_ANN:
+                        if (elen != sizeof(struct ieee80211_ext_chansw_ie)) {
+                                elem_parse_failed = true;
+                                break;
+                        }
+                        elems->ext_chansw_ie = (void *)pos;
+                        break;
                 case WLAN_EID_COUNTRY:
                         elems->country_elem = pos;
                         elems->country_elem_len = elen;