nl80211/cfg80211: support for mesh, sta dumping

Added support for mesh id and mesh path operation as well as
station structure dumping.

Signed-off-by: Luis Carlos Cobo <luisca@cozybit.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 223 insertions, 35 deletions

diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index a9f0b93324a2..ea6517e58b04 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -78,6 +78,18 @@
  *      or, if no MAC address given, all stations, on the interface identified
  *      by %NL80211_ATTR_IFINDEX.
  *
+ * @NL80211_CMD_GET_MPATH: Get mesh path attributes for mesh path to
+ *      destination %NL80211_ATTR_MAC on the interface identified by
+ *      %NL80211_ATTR_IFINDEX.
+ * @NL80211_CMD_SET_MPATH:  Set mesh path attributes for mesh path to
+ *      destination %NL80211_ATTR_MAC on the interface identified by
+ *      %NL80211_ATTR_IFINDEX.
+ * @NL80211_CMD_NEW_PATH: Add a mesh path with given attributes to the
+ *      the interface identified by %NL80211_ATTR_IFINDEX.
+ * @NL80211_CMD_DEL_PATH: Remove a mesh path identified by %NL80211_ATTR_MAC
+ *      or, if no MAC address given, all mesh paths, on the interface identified
+ *      by %NL80211_ATTR_IFINDEX.
+ *
  * @NL80211_CMD_MAX: highest used command number
  * @__NL80211_CMD_AFTER_LAST: internal use
  */
@@ -112,6 +124,11 @@ enum nl80211_commands {
 
         /* add commands here */
 
+        NL80211_CMD_GET_MPATH,
+        NL80211_CMD_SET_MPATH,
+        NL80211_CMD_NEW_MPATH,
+        NL80211_CMD_DEL_MPATH,
+
         /* used to define NL80211_CMD_MAX below */
         __NL80211_CMD_AFTER_LAST,
         NL80211_CMD_MAX = __NL80211_CMD_AFTER_LAST - 1
@@ -157,13 +174,21 @@ enum nl80211_commands {
  *      restriction (at most %NL80211_MAX_SUPP_RATES).
  * @NL80211_ATTR_STA_VLAN: interface index of VLAN interface to move station
  *      to, or the AP interface the station was originally added to to.
- * @NL80211_ATTR_STA_STATS: statistics for a station, part of station info
+ * @NL80211_ATTR_STA_INFO: information about a station, part of station info
  *      given for %NL80211_CMD_GET_STATION, nested attribute containing
- *      info as possible, see &enum nl80211_sta_stats.
+ *      info as possible, see &enum nl80211_sta_info.
  *
  * @NL80211_ATTR_WIPHY_BANDS: Information about an operating bands,
  *      consisting of a nested array.
  *
+ * @NL80211_ATTR_MESH_ID: mesh id (1-32 bytes).
+ * @NL80211_ATTR_PLINK_ACTION: action to perform on the mesh peer link.
+ * @NL80211_ATTR_MPATH_NEXT_HOP: MAC address of the next hop for a mesh path.
+ * @NL80211_ATTR_MPATH_INFO: information about a mesh_path, part of mesh path
+ *      info given for %NL80211_CMD_GET_MPATH, nested attribute described at
+ *      &enum nl80211_mpath_info.
+ *
+ *
  * @NL80211_ATTR_MNTR_FLAGS: flags, nested element with NLA_FLAG attributes of
  *      &enum nl80211_mntr_flags.
  *
@@ -199,7 +224,7 @@ enum nl80211_attrs {
         NL80211_ATTR_STA_LISTEN_INTERVAL,
         NL80211_ATTR_STA_SUPPORTED_RATES,
         NL80211_ATTR_STA_VLAN,
-        NL80211_ATTR_STA_STATS,
+        NL80211_ATTR_STA_INFO,
 
         NL80211_ATTR_WIPHY_BANDS,
 
@@ -207,6 +232,11 @@ enum nl80211_attrs {
 
         /* add attributes here, update the policy in nl80211.c */
 
+        NL80211_ATTR_MESH_ID,
+        NL80211_ATTR_STA_PLINK_ACTION,
+        NL80211_ATTR_MPATH_NEXT_HOP,
+        NL80211_ATTR_MPATH_INFO,
+
         __NL80211_ATTR_AFTER_LAST,
         NL80211_ATTR_MAX = __NL80211_ATTR_AFTER_LAST - 1
 };
@@ -223,6 +253,7 @@ enum nl80211_attrs {
  * @NL80211_IFTYPE_AP_VLAN: VLAN interface for access points
  * @NL80211_IFTYPE_WDS: wireless distribution interface
  * @NL80211_IFTYPE_MONITOR: monitor interface receiving all frames
+ * @NL80211_IFTYPE_MESH_POINT: mesh point
  * @NL80211_IFTYPE_MAX: highest interface type number currently defined
  * @__NL80211_IFTYPE_AFTER_LAST: internal use
  *
@@ -238,6 +269,7 @@ enum nl80211_iftype {
         NL80211_IFTYPE_AP_VLAN,
         NL80211_IFTYPE_WDS,
         NL80211_IFTYPE_MONITOR,
+        NL80211_IFTYPE_MESH_POINT,
 
         /* keep last */
         __NL80211_IFTYPE_AFTER_LAST,
@@ -267,27 +299,78 @@ enum nl80211_sta_flags {
 };
 
 /**
- * enum nl80211_sta_stats - station statistics
+ * enum nl80211_sta_info - station information
  *
- * These attribute types are used with %NL80211_ATTR_STA_STATS
+ * These attribute types are used with %NL80211_ATTR_STA_INFO
  * when getting information about a station.
  *
- * @__NL80211_STA_STAT_INVALID: attribute number 0 is reserved
- * @NL80211_STA_STAT_INACTIVE_TIME: time since last activity (u32, msecs)
- * @NL80211_STA_STAT_RX_BYTES: total received bytes (u32, from this station)
- * @NL80211_STA_STAT_TX_BYTES: total transmitted bytes (u32, to this station)
- * @__NL80211_STA_STAT_AFTER_LAST: internal
- * @NL80211_STA_STAT_MAX: highest possible station stats attribute
+ * @__NL80211_STA_INFO_INVALID: attribute number 0 is reserved
+ * @NL80211_STA_INFO_INACTIVE_TIME: time since last activity (u32, msecs)
+ * @NL80211_STA_INFO_RX_BYTES: total received bytes (u32, from this station)
+ * @NL80211_STA_INFO_TX_BYTES: total transmitted bytes (u32, to this station)
+ * @__NL80211_STA_INFO_AFTER_LAST: internal
+ * @NL80211_STA_INFO_MAX: highest possible station info attribute
+ */
+enum nl80211_sta_info {
+        __NL80211_STA_INFO_INVALID,
+        NL80211_STA_INFO_INACTIVE_TIME,
+        NL80211_STA_INFO_RX_BYTES,
+        NL80211_STA_INFO_TX_BYTES,
+        NL80211_STA_INFO_LLID,
+        NL80211_STA_INFO_PLID,
+        NL80211_STA_INFO_PLINK_STATE,
+
+        /* keep last */
+        __NL80211_STA_INFO_AFTER_LAST,
+        NL80211_STA_INFO_MAX = __NL80211_STA_INFO_AFTER_LAST - 1
+};
+
+/**
+ * enum nl80211_mpath_flags - nl80211 mesh path flags
+ *
+ * @NL80211_MPATH_FLAG_ACTIVE: the mesh path is active
+ * @NL80211_MPATH_FLAG_RESOLVING: the mesh path discovery process is running
+ * @NL80211_MPATH_FLAG_DSN_VALID: the mesh path contains a valid DSN
+ * @NL80211_MPATH_FLAG_FIXED: the mesh path has been manually set
+ * @NL80211_MPATH_FLAG_RESOLVED: the mesh path discovery process succeeded
+ */
+enum nl80211_mpath_flags {
+        NL80211_MPATH_FLAG_ACTIVE =     1<<0,
+        NL80211_MPATH_FLAG_RESOLVING =  1<<1,
+        NL80211_MPATH_FLAG_DSN_VALID =  1<<2,
+        NL80211_MPATH_FLAG_FIXED =      1<<3,
+        NL80211_MPATH_FLAG_RESOLVED =   1<<4,
+};
+
+/**
+ * enum nl80211_mpath_info - mesh path information
+ *
+ * These attribute types are used with %NL80211_ATTR_MPATH_INFO when getting
+ * information about a mesh path.
+ *
+ * @__NL80211_MPATH_INFO_INVALID: attribute number 0 is reserved
+ * @NL80211_ATTR_MPATH_FRAME_QLEN: number of queued frames for this destination
+ * @NL80211_ATTR_MPATH_DSN: destination sequence number
+ * @NL80211_ATTR_MPATH_METRIC: metric (cost) of this mesh path
+ * @NL80211_ATTR_MPATH_EXPTIME: expiration time for the path, in msec from now
+ * @NL80211_ATTR_MPATH_FLAGS: mesh path flags, enumerated in
+ *      &enum nl80211_mpath_flags;
+ * @NL80211_ATTR_MPATH_DISCOVERY_TIMEOUT: total path discovery timeout, in msec
+ * @NL80211_ATTR_MPATH_DISCOVERY_RETRIES: mesh path discovery retries
  */
-enum nl80211_sta_stats {
-        __NL80211_STA_STAT_INVALID,
-        NL80211_STA_STAT_INACTIVE_TIME,
-        NL80211_STA_STAT_RX_BYTES,
-        NL80211_STA_STAT_TX_BYTES,
+enum nl80211_mpath_info {
+        __NL80211_MPATH_INFO_INVALID,
+        NL80211_MPATH_INFO_FRAME_QLEN,
+        NL80211_MPATH_INFO_DSN,
+        NL80211_MPATH_INFO_METRIC,
+        NL80211_MPATH_INFO_EXPTIME,
+        NL80211_MPATH_INFO_FLAGS,
+        NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
+        NL80211_MPATH_INFO_DISCOVERY_RETRIES,
 
         /* keep last */
-        __NL80211_STA_STAT_AFTER_LAST,
-        NL80211_STA_STAT_MAX = __NL80211_STA_STAT_AFTER_LAST - 1
+        __NL80211_MPATH_INFO_AFTER_LAST,
+        NL80211_MPATH_INFO_MAX = __NL80211_MPATH_INFO_AFTER_LAST - 1
 };
 
 /**
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index ab4caf63954f..e00750836ba5 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -12,6 +12,16 @@
  * Copyright 2006, 2007 Johannes Berg <johannes@sipsolutions.net>
  */
 
+/**
+ * struct vif_params - describes virtual interface parameters
+ * @mesh_id: mesh ID to use
+ * @mesh_id_len: length of the mesh ID
+ */
+struct vif_params {
+       u8 *mesh_id;
+       int mesh_id_len;
+};
+
 /* Radiotap header iteration
  *   implemented in net/wireless/radiotap.c
  *   docs in Documentation/networking/radiotap-headers.txt
@@ -109,6 +119,19 @@ enum station_flags {
 };
 
 /**
+ * enum plink_action - actions to perform in mesh peers
+ *
+ * @PLINK_ACTION_INVALID: action 0 is reserved
+ * @PLINK_ACTION_OPEN: start mesh peer link establishment
+ * @PLINK_ACTION_BLOCL: block traffic from this mesh peer
+ */
+enum plink_actions {
+        PLINK_ACTION_INVALID,
+        PLINK_ACTION_OPEN,
+        PLINK_ACTION_BLOCK,
+};
+
+/**
  * struct station_parameters - station parameters
  *
  * Used to change and create a new station.
@@ -128,39 +151,52 @@ struct station_parameters {
         int listen_interval;
         u16 aid;
         u8 supported_rates_len;
+        u8 plink_action;
 };
 
 /**
- * enum station_stats_flags - station statistics flags
+ * enum station_info_flags - station information flags
  *
- * Used by the driver to indicate which info in &struct station_stats
- * it has filled in during get_station().
+ * Used by the driver to indicate which info in &struct station_info
+ * it has filled in during get_station() or dump_station().
  *
- * @STATION_STAT_INACTIVE_TIME: @inactive_time filled
- * @STATION_STAT_RX_BYTES: @rx_bytes filled
- * @STATION_STAT_TX_BYTES: @tx_bytes filled
+ * @STATION_INFO_INACTIVE_TIME: @inactive_time filled
+ * @STATION_INFO_RX_BYTES: @rx_bytes filled
+ * @STATION_INFO_TX_BYTES: @tx_bytes filled
+ * @STATION_INFO_LLID: @llid filled
+ * @STATION_INFO_PLID: @plid filled
+ * @STATION_INFO_PLINK_STATE: @plink_state filled
  */
-enum station_stats_flags {
-        STATION_STAT_INACTIVE_TIME      = 1<<0,
-        STATION_STAT_RX_BYTES           = 1<<1,
-        STATION_STAT_TX_BYTES           = 1<<2,
+enum station_info_flags {
+        STATION_INFO_INACTIVE_TIME      = 1<<0,
+        STATION_INFO_RX_BYTES           = 1<<1,
+        STATION_INFO_TX_BYTES           = 1<<2,
+        STATION_INFO_LLID               = 1<<3,
+        STATION_INFO_PLID               = 1<<4,
+        STATION_INFO_PLINK_STATE        = 1<<5,
 };
 
 /**
- * struct station_stats - station statistics
+ * struct station_info - station information
  *
- * Station information filled by driver for get_station().
+ * Station information filled by driver for get_station() and dump_station.
  *
- * @filled: bitflag of flags from &enum station_stats_flags
+ * @filled: bitflag of flags from &enum station_info_flags
  * @inactive_time: time since last station activity (tx/rx) in milliseconds
  * @rx_bytes: bytes received from this station
  * @tx_bytes: bytes transmitted to this station
+ * @llid: mesh local link id
+ * @plid: mesh peer link id
+ * @plink_state: mesh peer link state
  */
-struct station_stats {
+struct station_info {
         u32 filled;
         u32 inactive_time;
         u32 rx_bytes;
         u32 tx_bytes;
+        u16 llid;
+        u16 plid;
+        u8 plink_state;
 };
 
 /**
@@ -183,6 +219,56 @@ enum monitor_flags {
         MONITOR_FLAG_COOK_FRAMES        = 1<<NL80211_MNTR_FLAG_COOK_FRAMES,
 };
 
+/**
+ * enum mpath_info_flags -  mesh path information flags
+ *
+ * Used by the driver to indicate which info in &struct mpath_info it has filled
+ * in during get_station() or dump_station().
+ *
+ * MPATH_INFO_FRAME_QLEN: @frame_qlen filled
+ * MPATH_INFO_DSN: @dsn filled
+ * MPATH_INFO_METRIC: @metric filled
+ * MPATH_INFO_EXPTIME: @exptime filled
+ * MPATH_INFO_DISCOVERY_TIMEOUT: @discovery_timeout filled
+ * MPATH_INFO_DISCOVERY_RETRIES: @discovery_retries filled
+ * MPATH_INFO_FLAGS: @flags filled
+ */
+enum mpath_info_flags {
+        MPATH_INFO_FRAME_QLEN           = BIT(0),
+        MPATH_INFO_DSN                  = BIT(1),
+        MPATH_INFO_METRIC               = BIT(2),
+        MPATH_INFO_EXPTIME              = BIT(3),
+        MPATH_INFO_DISCOVERY_TIMEOUT    = BIT(4),
+        MPATH_INFO_DISCOVERY_RETRIES    = BIT(5),
+        MPATH_INFO_FLAGS                = BIT(6),
+};
+
+/**
+ * struct mpath_info - mesh path information
+ *
+ * Mesh path information filled by driver for get_mpath() and dump_mpath().
+ *
+ * @filled: bitfield of flags from &enum mpath_info_flags
+ * @frame_qlen: number of queued frames for this destination
+ * @dsn: destination sequence number
+ * @metric: metric (cost) of this mesh path
+ * @exptime: expiration time for the mesh path from now, in msecs
+ * @flags: mesh path flags
+ * @discovery_timeout: total mesh path discovery timeout, in msecs
+ * @discovery_retries: mesh path discovery retries
+ */
+struct mpath_info {
+        u32 filled;
+        u32 frame_qlen;
+        u32 dsn;
+        u32 metric;
+        u32 exptime;
+        u32 discovery_timeout;
+        u8 discovery_retries;
+        u8 flags;
+};
+
+
 /* from net/wireless.h */
 struct wiphy;
 
@@ -230,13 +316,17 @@ struct wiphy;
  * @del_station: Remove a station; @mac may be NULL to remove all stations.
  *
  * @change_station: Modify a given station.
+ *
+ * @set_mesh_cfg: set mesh parameters (by now, just mesh id)
  */
 struct cfg80211_ops {
         int     (*add_virtual_intf)(struct wiphy *wiphy, char *name,
-                                    enum nl80211_iftype type, u32 *flags);
+                                    enum nl80211_iftype type, u32 *flags,
+                                    struct vif_params *params);
         int     (*del_virtual_intf)(struct wiphy *wiphy, int ifindex);
         int     (*change_virtual_intf)(struct wiphy *wiphy, int ifindex,
-                                       enum nl80211_iftype type, u32 *flags);
+                                       enum nl80211_iftype type, u32 *flags,
+                                       struct vif_params *params);
 
         int     (*add_key)(struct wiphy *wiphy, struct net_device *netdev,
                            u8 key_index, u8 *mac_addr,
@@ -264,7 +354,22 @@ struct cfg80211_ops {
         int     (*change_station)(struct wiphy *wiphy, struct net_device *dev,
                                   u8 *mac, struct station_parameters *params);
         int     (*get_station)(struct wiphy *wiphy, struct net_device *dev,
-                               u8 *mac, struct station_stats *stats);
+                               u8 *mac, struct station_info *sinfo);
+        int     (*dump_station)(struct wiphy *wiphy, struct net_device *dev,
+                               int idx, u8 *mac, struct station_info *sinfo);
+
+        int     (*add_mpath)(struct wiphy *wiphy, struct net_device *dev,
+                               u8 *dst, u8 *next_hop);
+        int     (*del_mpath)(struct wiphy *wiphy, struct net_device *dev,
+                               u8 *dst);
+        int     (*change_mpath)(struct wiphy *wiphy, struct net_device *dev,
+                                  u8 *dst, u8 *next_hop);
+        int     (*get_mpath)(struct wiphy *wiphy, struct net_device *dev,
+                               u8 *dst, u8 *next_hop,
+                               struct mpath_info *pinfo);
+        int     (*dump_mpath)(struct wiphy *wiphy, struct net_device *dev,
+                               int idx, u8 *dst, u8 *next_hop,
+                               struct mpath_info *pinfo);
 };
 
 #endif /* __NET_CFG80211_H */