{nl,cfg,mac}80211: implement dot11MeshHWMPperrMinInterval

As per 802.11mb 13.9.11.3

Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index 208ba35661f9..fe93386d6aa9 100644
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -241,11 +241,15 @@ int mesh_path_error_tx(u8 ttl, u8 *target, __le32 target_sn,
 {
         struct ieee80211_local *local = sdata->local;
         struct sk_buff *skb;
+        struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
         struct ieee80211_mgmt *mgmt;
         u8 *pos, ie_len;
         int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.mesh_action) +
                       sizeof(mgmt->u.action.u.mesh_action);
 
+        if (time_before(jiffies, ifmsh->next_perr))
+                return -EAGAIN;
+
         skb = dev_alloc_skb(local->hw.extra_tx_headroom +
                             hdr_len +
                             2 + 15 /* PERR IE */);
@@ -290,6 +294,8 @@ int mesh_path_error_tx(u8 ttl, u8 *target, __le32 target_sn,
 
         /* see note in function header */
         prepare_frame_for_deferred_tx(sdata, skb);
+        ifmsh->next_perr = TU_TO_EXP_TIME(
+                                   ifmsh->mshcfg.dot11MeshHWMPperrMinInterval);
         ieee80211_add_pending_skb(local, skb);
         return 0;
 }