{cfg,nl}80211: mesh power mode primitives and userspace access

Add the nl80211_mesh_power_mode enumeration which holds possible
values for the mesh power mode. These modes are unknown, active,
light sleep and deep sleep.

Add power_mode entry to the mesh config structure to hold the
user-configured default mesh power mode. This value will be used
for new peer links.

Add the dot11MeshAwakeWindowDuration value to the mesh config.
The awake window is a duration in TU describing how long the STA
will stay awake after transmitting its beacon in PS mode.

Add access routines to:
 - get/set local link-specific power mode (STA)
 - get remote STA's link-specific power mode (STA)
 - get remote STA's non-peer power mode (STA)
 - get/set default mesh power mode (mesh config)
 - get/set mesh awake window duration (mesh config)

All config changes may be done at mesh runtime and take effect
immediately.

Signed-off-by: Marco Porsch <marco@cozybit.com>
Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com>
Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com>
[fix commit message line length, error handling in set station]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 42 insertions, 1 deletions

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index d5842eb35aec..1a7a710fe9bf 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -3001,6 +3001,18 @@ static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
             nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
                         sinfo->beacon_loss_count))
                 goto nla_put_failure;
+        if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
+            nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
+                        sinfo->local_pm))
+                goto nla_put_failure;
+        if ((sinfo->filled & STATION_INFO_PEER_PM) &&
+            nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
+                        sinfo->peer_pm))
+                goto nla_put_failure;
+        if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
+            nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
+                        sinfo->nonpeer_pm))
+                goto nla_put_failure;
         if (sinfo->filled & STATION_INFO_BSS_PARAM) {
                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
                 if (!bss_param)
@@ -3206,6 +3218,17 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
                 params.plink_state =
                     nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
 
+        if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
+                enum nl80211_mesh_power_mode pm = nla_get_u32(
+                        info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
+
+                if (pm <= NL80211_MESH_POWER_UNKNOWN ||
+                    pm > NL80211_MESH_POWER_MAX)
+                        return -EINVAL;
+
+                params.local_pm = pm;
+        }
+
         switch (dev->ieee80211_ptr->iftype) {
         case NL80211_IFTYPE_AP:
         case NL80211_IFTYPE_AP_VLAN:
@@ -3213,6 +3236,8 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
                 /* disallow mesh-specific things */
                 if (params.plink_action)
                         return -EINVAL;
+                if (params.local_pm)
+                        return -EINVAL;
 
                 /* TDLS can't be set, ... */
                 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
@@ -3265,6 +3290,8 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
                 /* disallow things sta doesn't support */
                 if (params.plink_action)
                         return -EINVAL;
+                if (params.local_pm)
+                        return -EINVAL;
                 /* reject any changes other than AUTHORIZED */
                 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
                         return -EINVAL;
@@ -3922,7 +3949,11 @@ static int nl80211_get_mesh_config(struct sk_buff *skb,
             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
                         cur_params.dot11MeshHWMProotInterval) ||
             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
-                        cur_params.dot11MeshHWMPconfirmationInterval))
+                        cur_params.dot11MeshHWMPconfirmationInterval) ||
+            nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
+                        cur_params.power_mode) ||
+            nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
+                        cur_params.dot11MeshAwakeWindowDuration))
                 goto nla_put_failure;
         nla_nest_end(msg, pinfoattr);
         genlmsg_end(msg, hdr);
@@ -3961,6 +3992,8 @@ static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_A
         [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 },
+        [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
+        [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
 };
 
 static const struct nla_policy
@@ -4088,6 +4121,14 @@ do {									    \
                                   1, 65535, mask,
                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
                                   nla_get_u16);
+        FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
+                                  NL80211_MESH_POWER_ACTIVE,
+                                  NL80211_MESH_POWER_MAX,
+                                  mask, NL80211_MESHCONF_POWER_MODE,
+                                  nla_get_u32);
+        FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
+                                  0, 65535, mask,
+                                  NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
         if (mask_out)
                 *mask_out = mask;