mac80211: 802.11w - Implement Association Comeback processing

When MFP is enabled, the AP does not allow a STA to associate if an
existing security association exists without first going through SA
Query process. When this happens, the association request is denied
with a new status code ("temporarily rejected") ans Association
Comeback IE is used to notify when the association may be tried again
(i.e., when the SA Query procedure has timed out).

Use the comeback time to update the mac80211 client MLME timer for
next association attempt to minimize waiting time if association is
temporarily rejected.

Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 9fe1948d28d3..7800e20f197f 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -914,6 +914,9 @@ enum ieee80211_statuscode {
         /* 802.11g */
         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
+        /* 802.11w */
+        WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
+        WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
         /* 802.11i */
         WLAN_STATUS_INVALID_IE = 40,
         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
@@ -1034,6 +1037,7 @@ enum ieee80211_eid {
         /* 802.11i */
         WLAN_EID_RSN = 48,
         WLAN_EID_MMIE = 76 /* 802.11w */,
+        WLAN_EID_ASSOC_COMEBACK_TIME = 77,
         WLAN_EID_WPA = 221,
         WLAN_EID_GENERIC = 221,
         WLAN_EID_VENDOR_SPECIFIC = 221,