{nl,cfg,mac}80211: implement dot11MeshHWMPconfirmationInterval

As defined in section 13.10.9.3 Case D (802.11-2012), this
control variable is used to limit the mesh STA to send only
one PREQ to a root mesh STA within this interval of time
(in TUs). The default value for this variable is set to
2000 TUs. However, for current implementation, the maximum
configurable of dot11MeshHWMPconfirmationInterval is
restricted by dot11MeshHWMPactivePathTimeout.

Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
[line-break commit log]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

2 files changed, 10 insertions, 1 deletions

diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c
index 2f141cfd581e..3b73b07486cf 100644
--- a/net/wireless/mesh.c
+++ b/net/wireless/mesh.c
@@ -16,6 +16,7 @@
 #define MESH_RANN_INTERVAL      5000
 #define MESH_PATH_TO_ROOT_TIMEOUT      6000
 #define MESH_ROOT_INTERVAL     5000
+#define MESH_ROOT_CONFIRMATION_INTERVAL 2000
 
 /*
  * Minimum interval between two consecutive PREQs originated by the same
@@ -66,6 +67,7 @@ const struct mesh_config default_mesh_config = {
         .ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED,
         .dot11MeshHWMPactivePathToRootTimeout = MESH_PATH_TO_ROOT_TIMEOUT,
         .dot11MeshHWMProotInterval = MESH_ROOT_INTERVAL,
+        .dot11MeshHWMPconfirmationInterval = MESH_ROOT_CONFIRMATION_INTERVAL,
 };
 
 const struct mesh_setup default_mesh_setup = {
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index f8930db613df..a363ca17bfc5 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -3473,7 +3473,9 @@ static int nl80211_get_mesh_config(struct sk_buff *skb,
             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
-                        cur_params.dot11MeshHWMProotInterval))
+                        cur_params.dot11MeshHWMProotInterval) ||
+            nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
+                        cur_params.dot11MeshHWMPconfirmationInterval))
                 goto nla_put_failure;
         nla_nest_end(msg, pinfoattr);
         genlmsg_end(msg, hdr);
@@ -3511,6 +3513,7 @@ static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_A
         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
+        [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
 };
 
 static const struct nla_policy
@@ -3625,6 +3628,10 @@ do {\
         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval,
                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
                                   nla_get_u16);
+        FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
+                                  dot11MeshHWMPconfirmationInterval, mask,
+                                  NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
+                                  nla_get_u16);
         if (mask_out)
                 *mask_out = mask;