wireless: restrict to 32 legacy rates

Since the standards only define 12 legacy rates, 32 is certainly
a sane upper limit and we don't need to use u64 everywhere. Add
sanity checking that no more than 32 rates are registered and
change the variables to u32 throughout.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
index c140a1b71a5e..a8bbdeca013a 100644
--- a/net/mac80211/mesh_plink.c
+++ b/net/mac80211/mesh_plink.c
@@ -93,7 +93,7 @@ static inline void mesh_plink_fsm_restart(struct sta_info *sta)
  *       on it in the lifecycle management section!
  */
 static struct sta_info *mesh_plink_alloc(struct ieee80211_sub_if_data *sdata,
-                                         u8 *hw_addr, u64 rates)
+                                         u8 *hw_addr, u32 rates)
 {
         struct ieee80211_local *local = sdata->local;
         struct sta_info *sta;
@@ -222,7 +222,7 @@ static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
         return 0;
 }
 
-void mesh_neighbour_update(u8 *hw_addr, u64 rates, struct ieee80211_sub_if_data *sdata,
+void mesh_neighbour_update(u8 *hw_addr, u32 rates, struct ieee80211_sub_if_data *sdata,
                            bool peer_accepting_plinks)
 {
         struct ieee80211_local *local = sdata->local;
@@ -447,7 +447,7 @@ void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_m
                 spin_lock_bh(&sta->lock);
         } else if (!sta) {
                 /* ftype == PLINK_OPEN */
-                u64 rates;
+                u32 rates;
                 if (!mesh_plink_free_count(sdata)) {
                         mpl_dbg("Mesh plink error: no more free plinks\n");
                         rcu_read_unlock();