Move the default mesh beacon interval and DTIM period to cfg80211 and
make it accessible to nl80211. This enables setting both values when joining
an MBSS.
NOTE: In a mesh with links in PS mode it is not advised to use the default
parameters 1000:4, as these cause excessive buffering delays that exceed
various timeouts (e.g. HWMP path request).
Signed-off-by: Marco Porsch <marco.porsch@xxxxxxxxxxxxxxxxxxx>
---
include/net/cfg80211.h | 4 ++++
net/mac80211/cfg.c | 3 +++
net/mac80211/mesh.c | 1 -
net/mac80211/mesh.h | 2 --
net/wireless/mesh.c | 5 +++++
net/wireless/nl80211.c | 14 ++++++++++++++
6 files changed, 26 insertions(+), 3 deletions(-)
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index c696457..91ce6234 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -921,6 +921,8 @@ struct mesh_config {
* @is_authenticated: this mesh requires authentication
* @is_secure: this mesh uses security
* @mcast_rate: multicat rate for Mesh Node [6Mbps is the default for 802.11a]
+ * @beacon_interval: beacon interval to use
+ * @dtim_period: DTIM period to use
*
* These parameters are fixed when the mesh is created.
*/
@@ -937,6 +939,8 @@ struct mesh_setup {
bool is_authenticated;
bool is_secure;
int mcast_rate[IEEE80211_NUM_BANDS];
+ u16 beacon_interval;
+ u8 dtim_period;
};
/**
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 7669002..d0b7a7e 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1568,6 +1568,9 @@ static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
sizeof(setup->mcast_rate));
+ sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
+ sdata->vif.bss_conf.dtim_period = setup->dtim_period;
+
return 0;
}
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index a350cab..5f3ef91 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -630,7 +630,6 @@ void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
ieee80211_queue_work(&local->hw, &sdata->work);
sdata->vif.bss_conf.ht_operation_mode =
ifmsh->mshcfg.ht_opmode;
- sdata->vif.bss_conf.beacon_int = MESH_DEFAULT_BEACON_INTERVAL;
sdata->vif.bss_conf.basic_rates =
ieee80211_mandatory_rates(sdata->local,
ieee80211_get_sdata_band(sdata));
diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h
index 7c9215f..7f3a78f 100644
--- a/net/mac80211/mesh.h
+++ b/net/mac80211/mesh.h
@@ -191,8 +191,6 @@ struct mesh_rmc {
#define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ)
#define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
-#define MESH_DEFAULT_BEACON_INTERVAL 1000 /* in 1024 us units */
-
#define MESH_PATH_EXPIRE (600 * HZ)
/* Default maximum number of plinks per interface */
diff --git a/net/wireless/mesh.c b/net/wireless/mesh.c
index 966cfc4..c2060d4 100644
--- a/net/wireless/mesh.c
+++ b/net/wireless/mesh.c
@@ -44,6 +44,9 @@
#define MESH_SYNC_NEIGHBOR_OFFSET_MAX 50
+#define MESH_DEFAULT_BEACON_INTERVAL 1000 /* in 1024 us units (=TUs) */
+#define MESH_DEFAULT_DTIM_PERIOD 4
+
const struct mesh_config default_mesh_config = {
.dot11MeshRetryTimeout = MESH_RET_T,
.dot11MeshConfirmTimeout = MESH_CONF_T,
@@ -81,6 +84,8 @@ const struct mesh_setup default_mesh_setup = {
.ie = NULL,
.ie_len = 0,
.is_secure = false,
+ .beacon_interval = MESH_DEFAULT_BEACON_INTERVAL,
+ .dtim_period = MESH_DEFAULT_DTIM_PERIOD,
};
int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 8c08578..e99a8ce 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -6511,6 +6511,20 @@ static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
return -EINVAL;
+ if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
+ setup.beacon_interval =
+ nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
+ if (setup.beacon_interval < 1 || setup.beacon_interval > 10000)
+ return -EINVAL;
+ }
+
+ if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
+ setup.dtim_period =
+ nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
+ if (setup.dtim_period < 1 || setup.dtim_period > 100)
+ return -EINVAL;
+ }
+
if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
/* parse additional setup parameters if given */
err = nl80211_parse_mesh_setup(info, &setup);
--
1.7.9.5
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