{nl,cfg,mac}80211: let userspace set RANN interval

Allow userspace to set Root Announcement Interval for our mesh
interface. Also, RANN interval is now in proper units of TUs.

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

diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 89dec16..20353bb 100644 (file)
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -1861,6 +1861,9 @@ enum nl80211_mntr_flags {
  * @NL80211_MESHCONF_ELEMENT_TTL: specifies the value of TTL field set at a
  * source mesh point for path selection elements.
  *
+ * @NL80211_MESHCONF_HWMP_RANN_INTERVAL:  The interval of time (in TUs) between
+ * root announcements are transmitted.
+ *
  * @NL80211_MESHCONF_ATTR_MAX: highest possible mesh configuration attribute
  *
  * @__NL80211_MESHCONF_ATTR_AFTER_LAST: internal use
@@ -1882,6 +1885,7 @@ enum nl80211_meshconf_params {
        NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
        NL80211_MESHCONF_HWMP_ROOTMODE,
        NL80211_MESHCONF_ELEMENT_TTL,
+       NL80211_MESHCONF_HWMP_RANN_INTERVAL,
 
        /* keep last */
        __NL80211_MESHCONF_ATTR_AFTER_LAST,

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index d29d11a..4f0d12e 100644 (file)
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -755,6 +755,7 @@ struct mesh_config {
        u16 dot11MeshHWMPpreqMinInterval;
        u16 dot11MeshHWMPnetDiameterTraversalTime;
        u8  dot11MeshHWMPRootMode;
+       u16 dot11MeshHWMPRannInterval;
 };
 
 /**

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index c1fa577..9995c83 100644 (file)
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1137,6 +1137,10 @@ static int ieee80211_update_mesh_config(struct wiphy *wiphy,
                conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
                ieee80211_mesh_root_setup(ifmsh);
        }
+       if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) {
+               conf->dot11MeshHWMPRannInterval =
+                       nconf->dot11MeshHWMPRannInterval;
+       }
        return 0;
 }
 

diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c
index 75ece3d..bac9443 100644 (file)
--- a/net/mac80211/debugfs_netdev.c
+++ b/net/mac80211/debugfs_netdev.c
@@ -372,6 +372,8 @@ IEEE80211_IF_FILE(min_discovery_timeout,
                u.mesh.mshcfg.min_discovery_timeout, DEC);
 IEEE80211_IF_FILE(dot11MeshHWMPRootMode,
                u.mesh.mshcfg.dot11MeshHWMPRootMode, DEC);
+IEEE80211_IF_FILE(dot11MeshHWMPRannInterval,
+               u.mesh.mshcfg.dot11MeshHWMPRannInterval, DEC);
 #endif
 
 
@@ -486,6 +488,7 @@ static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
        MESHPARAMS_ADD(path_refresh_time);
        MESHPARAMS_ADD(min_discovery_timeout);
        MESHPARAMS_ADD(dot11MeshHWMPRootMode);
+       MESHPARAMS_ADD(dot11MeshHWMPRannInterval);
 #undef MESHPARAMS_ADD
 }
 #endif

diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index e120fef..1c4f53c 100644 (file)
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -537,7 +537,8 @@ static void ieee80211_mesh_rootpath(struct ieee80211_sub_if_data *sdata)
 
        mesh_path_tx_root_frame(sdata);
        mod_timer(&ifmsh->mesh_path_root_timer,
-                 round_jiffies(jiffies + IEEE80211_MESH_RANN_INTERVAL));
+                 round_jiffies(jiffies +
+                         usecs_to_jiffies(ifmsh->mshcfg.dot11MeshHWMPRannInterval * 1024)));
 }
 
 #ifdef CONFIG_PM

diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h
index 9d9116e..2027207 100644 (file)
--- a/net/mac80211/mesh.h
+++ b/net/mac80211/mesh.h
@@ -175,7 +175,6 @@ struct mesh_rmc {
 
 #define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ)
 #define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
-#define IEEE80211_MESH_RANN_INTERVAL        (1 * HZ)
 
 #define MESH_DEFAULT_BEACON_INTERVAL           1000    /* in 1024 us units */
 

diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index 7b517c4..ae3de75 100644 (file)
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -695,7 +695,7 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
        u8 ttl, flags, hopcount;
        u8 *orig_addr;
        u32 orig_sn, metric;
-       u32 interval = cpu_to_le32(IEEE80211_MESH_RANN_INTERVAL);
+       u32 interval = ifmsh->mshcfg.dot11MeshHWMPRannInterval;
        bool root_is_gate;
 
        ttl = rann->rann_ttl;
@@ -743,7 +743,7 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
                mesh_path_sel_frame_tx(MPATH_RANN, flags, orig_addr,
                                       cpu_to_le32(orig_sn),
                                       0, NULL, 0, broadcast_addr,
-                                      hopcount, ttl, interval,
+                                      hopcount, ttl, cpu_to_le32(interval),
                                       cpu_to_le32(metric + mpath->metric),
                                       0, sdata);
                mpath->sn = orig_sn;
@@ -1044,11 +1044,11 @@ void
 mesh_path_tx_root_frame(struct ieee80211_sub_if_data *sdata)
 {
        struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
-       u32 interval = cpu_to_le32(IEEE80211_MESH_RANN_INTERVAL);
+       u32 interval = ifmsh->mshcfg.dot11MeshHWMPRannInterval;
 
        mesh_path_sel_frame_tx(MPATH_RANN, 0, sdata->vif.addr,
                               cpu_to_le32(++ifmsh->sn),
                               0, NULL, 0, broadcast_addr,
                               0, sdata->u.mesh.mshcfg.element_ttl,
-                              interval, 0, 0, sdata);
+                              cpu_to_le32(interval), 0, 0, sdata);
 }

diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c
index 5c11608..b5a39d4 100644 (file)
--- a/net/wireless/mesh.c
+++ b/net/wireless/mesh.c
@@ -12,6 +12,7 @@
 #define MESH_HOLD_T            100
 
 #define MESH_PATH_TIMEOUT      5000
+#define MESH_RANN_INTERVAL      5000
 
 /*
  * Minimum interval between two consecutive PREQs originated by the same
@@ -49,6 +50,7 @@ const struct mesh_config default_mesh_config = {
        .dot11MeshHWMPmaxPREQretries = MESH_MAX_PREQ_RETRIES,
        .path_refresh_time = MESH_PATH_REFRESH_TIME,
        .min_discovery_timeout = MESH_MIN_DISCOVERY_TIMEOUT,
+       .dot11MeshHWMPRannInterval = MESH_RANN_INTERVAL,
 };
 
 const struct mesh_setup default_mesh_setup = {

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 93ee888..bbf3d73 100644 (file)
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -3035,6 +3035,8 @@ static int nl80211_get_mesh_config(struct sk_buff *skb,
                        cur_params.dot11MeshHWMPnetDiameterTraversalTime);
        NLA_PUT_U8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
                        cur_params.dot11MeshHWMPRootMode);
+       NLA_PUT_U16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
+                       cur_params.dot11MeshHWMPRannInterval);
        nla_nest_end(msg, pinfoattr);
        genlmsg_end(msg, hdr);
        return genlmsg_reply(msg, info);
@@ -3063,6 +3065,7 @@ static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_A
        [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
        [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
        [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
+       [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
 };
 
 static const struct nla_policy
@@ -3141,6 +3144,10 @@ do {\
                        dot11MeshHWMPRootMode, mask,
                        NL80211_MESHCONF_HWMP_ROOTMODE,
                        nla_get_u8);
+       FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
+                       dot11MeshHWMPRannInterval, mask,
+                       NL80211_MESHCONF_HWMP_RANN_INTERVAL,
+                       nla_get_u16);
        if (mask_out)
                *mask_out = mask;