mac80211: implement RANN processing and forwarding

Process the RANN (Root Annoucement) Frame and try to find the HWMP
root station by sending a PREQ.

Signed-off-by: Rui Paulo <rpaulo@gmail.com>
Signed-off-by: Javier Cardona <javier@cozybit.com>
Reviewed-by: Andrey Yurovsky <andrey@cozybit.com>
Tested-by: Brian Cavagnolo <brian@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 50c684db33c7..49b1abd2fe97 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -554,6 +554,20 @@ struct ieee80211_tim_ie {
         u8 virtual_map[1];
 } __attribute__ ((packed));
 
+/**
+ * struct ieee80211_rann_ie
+ *
+ * This structure refers to "Root Announcement information element"
+ */
+struct ieee80211_rann_ie {
+        u8 rann_flags;
+        u8 rann_hopcount;
+        u8 rann_ttl;
+        u8 rann_addr[6];
+        u32 rann_seq;
+        u32 rann_metric;
+} __attribute__ ((packed));
+
 #define WLAN_SA_QUERY_TR_ID_LEN 2
 
 struct ieee80211_mgmt {
@@ -1070,6 +1084,7 @@ enum ieee80211_eid {
         WLAN_EID_PREQ = 68,
         WLAN_EID_PREP = 69,
         WLAN_EID_PERR = 70,
+        WLAN_EID_RANN = 49,     /* compatible with FreeBSD */
         /* 802.11h */
         WLAN_EID_PWR_CONSTRAINT = 32,
         WLAN_EID_PWR_CAPABILITY = 33,