---

yaml
---
r: 300690
b: refs/heads/master
c: dbf498f
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9bdd3a6bf8513a0a9eda031d15b36e4677854243
+refs/heads/master: dbf498fbafa2c23139d5a990e94ed78bafbbea19

trunk/include/linux/ieee80211.h

@@ -1438,6 +1438,18 @@ enum ieee80211_tdls_actioncode {
 /* TDLS specific payload type in the LLC/SNAP header */
 #define WLAN_TDLS_SNAP_RFTYPE	0x2
 
+/**
+ * enum - mesh synchronization method identifier
+ *
+ * @IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET: the default synchronization method
+ * @IEEE80211_SYNC_METHOD_VENDOR: a vendor specific synchronization method
+ * that will be specified in a vendor specific information element
+ */
+enum {
+	IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET = 1,
+	IEEE80211_SYNC_METHOD_VENDOR = 255,
+};
+
 /**
  * enum - mesh path selection protocol identifier
  *

trunk/net/mac80211/Kconfig

@@ -225,6 +225,17 @@ config MAC80211_VERBOSE_MHWMP_DEBUG
 
 	  Do not select this option.
 
+config MAC80211_VERBOSE_MESH_SYNC_DEBUG
+	bool "Verbose mesh mesh synchronization debugging"
+	depends on MAC80211_DEBUG_MENU
+	depends on MAC80211_MESH
+	---help---
+	  Selecting this option causes mac80211 to print out very verbose mesh
+	  synchronization debugging messages (when mac80211 is taking part in a
+	  mesh network).
+
+	  Do not select this option.
+
 config MAC80211_VERBOSE_TDLS_DEBUG
 	bool "Verbose TDLS debugging"
 	depends on MAC80211_DEBUG_MENU

trunk/net/mac80211/Makefile

@@ -38,7 +38,8 @@ mac80211-$(CONFIG_MAC80211_MESH) += \
 	mesh.o \
 	mesh_pathtbl.o \
 	mesh_plink.o \
-	mesh_hwmp.o
+	mesh_hwmp.o \
+	mesh_sync.o
 
 mac80211-$(CONFIG_PM) += pm.o
 

trunk/net/mac80211/debugfs_sta.c

@@ -63,15 +63,16 @@ static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
 	test_sta_flag(sta, WLAN_STA_##flg) ? #flg "\n" : ""
 
 	int res = scnprintf(buf, sizeof(buf),
-			    "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
+			    "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
 			    TEST(AUTH), TEST(ASSOC), TEST(PS_STA),
 			    TEST(PS_DRIVER), TEST(AUTHORIZED),
 			    TEST(SHORT_PREAMBLE),
 			    TEST(WME), TEST(WDS), TEST(CLEAR_PS_FILT),
 			    TEST(MFP), TEST(BLOCK_BA), TEST(PSPOLL),
 			    TEST(UAPSD), TEST(SP), TEST(TDLS_PEER),
 			    TEST(TDLS_PEER_AUTH), TEST(4ADDR_EVENT),
-			    TEST(INSERTED), TEST(RATE_CONTROL));
+			    TEST(INSERTED), TEST(RATE_CONTROL),
+			    TEST(TOFFSET_KNOWN));
 #undef TEST
 	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 }

trunk/net/mac80211/ieee80211_i.h

@@ -554,6 +554,24 @@ struct ieee80211_if_ibss {
 	} state;
 };
 
+/**
+ * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
+ *
+ * these declarations define the interface, which enables
+ * vendor-specific mesh synchronization
+ *
+ */
+struct ieee802_11_elems;
+struct ieee80211_mesh_sync_ops {
+	void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
+			     u16 stype,
+			     struct ieee80211_mgmt *mgmt,
+			     struct ieee802_11_elems *elems,
+			     struct ieee80211_rx_status *rx_status);
+	void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata);
+	/* add other framework functions here */
+};
+
 struct ieee80211_if_mesh {
 	struct timer_list housekeeping_timer;
 	struct timer_list mesh_path_timer;
@@ -602,6 +620,11 @@ struct ieee80211_if_mesh {
 		IEEE80211_MESH_SEC_AUTHED = 0x1,
 		IEEE80211_MESH_SEC_SECURED = 0x2,
 	} security;
+	/* Extensible Synchronization Framework */
+	struct ieee80211_mesh_sync_ops *sync_ops;
+	s64 sync_offset_clockdrift_max;
+	spinlock_t sync_offset_lock;
+	bool adjusting_tbtt;
 };
 
 #ifdef CONFIG_MAC80211_MESH

trunk/net/mac80211/mesh.c

@@ -13,9 +13,6 @@
 #include "ieee80211_i.h"
 #include "mesh.h"
 
-#define MESHCONF_CAPAB_ACCEPT_PLINKS 0x01
-#define MESHCONF_CAPAB_FORWARDING    0x08
-
 #define TMR_RUNNING_HK	0
 #define TMR_RUNNING_MP	1
 #define TMR_RUNNING_MPR	2
@@ -251,8 +248,10 @@ mesh_add_meshconf_ie(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
 	/* Mesh capability */
 	ifmsh->accepting_plinks = mesh_plink_availables(sdata);
 	*pos = MESHCONF_CAPAB_FORWARDING;
-	*pos++ |= ifmsh->accepting_plinks ?
+	*pos |= ifmsh->accepting_plinks ?
 	    MESHCONF_CAPAB_ACCEPT_PLINKS : 0x00;
+	*pos++ |= ifmsh->adjusting_tbtt ?
+	    MESHCONF_CAPAB_TBTT_ADJUSTING : 0x00;
 	*pos++ = 0x00;
 
 	return 0;
@@ -573,8 +572,11 @@ void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
 	ieee80211_configure_filter(local);
 
 	ifmsh->mesh_cc_id = 0;	/* Disabled */
-	ifmsh->mesh_sp_id = 0;	/* Neighbor Offset */
 	ifmsh->mesh_auth_id = 0;	/* Disabled */
+	/* register sync ops from extensible synchronization framework */
+	ifmsh->sync_ops = ieee80211_mesh_sync_ops_get(ifmsh->mesh_sp_id);
+	ifmsh->adjusting_tbtt = false;
+	ifmsh->sync_offset_clockdrift_max = 0;
 	set_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags);
 	ieee80211_mesh_root_setup(ifmsh);
 	ieee80211_queue_work(&local->hw, &sdata->work);
@@ -616,6 +618,7 @@ static void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
 					struct ieee80211_rx_status *rx_status)
 {
 	struct ieee80211_local *local = sdata->local;
+	struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
 	struct ieee802_11_elems elems;
 	struct ieee80211_channel *channel;
 	u32 supp_rates = 0;
@@ -654,6 +657,10 @@ static void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
 		supp_rates = ieee80211_sta_get_rates(local, &elems, band);
 		mesh_neighbour_update(mgmt->sa, supp_rates, sdata, &elems);
 	}
+
+	if (ifmsh->sync_ops)
+		ifmsh->sync_ops->rx_bcn_presp(sdata,
+			stype, mgmt, &elems, rx_status);
 }
 
 static void ieee80211_mesh_rx_mgmt_action(struct ieee80211_sub_if_data *sdata,
@@ -721,6 +728,9 @@ void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata)
 
 	if (test_and_clear_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags))
 		ieee80211_mesh_rootpath(sdata);
+
+	if (test_and_clear_bit(MESH_WORK_DRIFT_ADJUST, &ifmsh->wrkq_flags))
+		mesh_sync_adjust_tbtt(sdata);
 }
 
 void ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local)
@@ -761,4 +771,5 @@ void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
 		    (unsigned long) sdata);
 	INIT_LIST_HEAD(&ifmsh->preq_queue.list);
 	spin_lock_init(&ifmsh->mesh_preq_queue_lock);
+	spin_lock_init(&ifmsh->sync_offset_lock);
 }

trunk/net/mac80211/mesh.h

@@ -18,6 +18,20 @@
 
 /* Data structures */
 
+/**
+ * enum mesh_config_capab_flags - mesh config IE capability flags
+ *
+ * @MESHCONF_CAPAB_ACCEPT_PLINKS: STA is willing to establish
+ * additional mesh peerings with other mesh STAs
+ * @MESHCONF_CAPAB_FORWARDING: the STA forwards MSDUs
+ * @MESHCONF_CAPAB_TBTT_ADJUSTING: TBTT adjustment procedure is ongoing
+ */
+enum mesh_config_capab_flags {
+	MESHCONF_CAPAB_ACCEPT_PLINKS = BIT(0),
+	MESHCONF_CAPAB_FORWARDING = BIT(3),
+	MESHCONF_CAPAB_TBTT_ADJUSTING = BIT(5),
+};
+
 /**
  * enum mesh_path_flags - mac80211 mesh path flags
  *
@@ -56,12 +70,15 @@ enum mesh_path_flags {
  * @MESH_WORK_GROW_MPP_TABLE: the mesh portals table is full and needs to
  * grow
  * @MESH_WORK_ROOT: the mesh root station needs to send a frame
+ * @MESH_WORK_DRIFT_ADJUST: time to compensate for clock drift relative to other
+ * mesh nodes
  */
 enum mesh_deferred_task_flags {
 	MESH_WORK_HOUSEKEEPING,
 	MESH_WORK_GROW_MPATH_TABLE,
 	MESH_WORK_GROW_MPP_TABLE,
 	MESH_WORK_ROOT,
+	MESH_WORK_DRIFT_ADJUST,
 };
 
 /**
@@ -234,6 +251,7 @@ void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata);
 void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata);
 void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata);
 void ieee80211_mesh_root_setup(struct ieee80211_if_mesh *ifmsh);
+struct ieee80211_mesh_sync_ops *ieee80211_mesh_sync_ops_get(u8 method);
 
 /* Mesh paths */
 int mesh_nexthop_lookup(struct sk_buff *skb,
@@ -327,6 +345,7 @@ void ieee80211_mesh_quiesce(struct ieee80211_sub_if_data *sdata);
 void ieee80211_mesh_restart(struct ieee80211_sub_if_data *sdata);
 void mesh_plink_quiesce(struct sta_info *sta);
 void mesh_plink_restart(struct sta_info *sta);
+void mesh_sync_adjust_tbtt(struct ieee80211_sub_if_data *sdata);
 #else
 #define mesh_allocated	0
 static inline void