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authorAyala Beker <ayala.beker@intel.com>2016-09-20 17:31:16 +0300
committerJohannes Berg <johannes.berg@intel.com>2016-09-30 13:21:28 +0200
commita5a9dcf291e1e541243878eed2d73a74006fa1f1 (patch)
tree74662fbcd9476c6fc296d16247c281a310614463 /net/wireless
parenta442b761b24b6886f9a4e2ff5f8cb4824c96526b (diff)
downloadlinux-a5a9dcf291e1e541243878eed2d73a74006fa1f1.tar.bz2
cfg80211: allow the user space to change current NAN configuration
Some NAN configuration paramaters may change during the operation of the NAN device. For example, a user may want to update master preference value when the device gets plugged/unplugged to the power. Add API that allows to do so. Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless')
-rw-r--r--net/wireless/nl80211.c42
-rw-r--r--net/wireless/rdev-ops.h17
-rw-r--r--net/wireless/trace.h24
3 files changed, 83 insertions, 0 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 0eca59ccd685..c0b5ae4af2d8 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -10919,6 +10919,40 @@ static int nl80211_nan_del_func(struct sk_buff *skb,
return 0;
}
+static int nl80211_nan_change_config(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct wireless_dev *wdev = info->user_ptr[1];
+ struct cfg80211_nan_conf conf = {};
+ u32 changed = 0;
+
+ if (wdev->iftype != NL80211_IFTYPE_NAN)
+ return -EOPNOTSUPP;
+
+ if (!wdev->nan_started)
+ return -ENOTCONN;
+
+ if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
+ conf.master_pref =
+ nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
+ if (conf.master_pref <= 1 || conf.master_pref == 255)
+ return -EINVAL;
+
+ changed |= CFG80211_NAN_CONF_CHANGED_PREF;
+ }
+
+ if (info->attrs[NL80211_ATTR_NAN_DUAL]) {
+ conf.dual = nla_get_u8(info->attrs[NL80211_ATTR_NAN_DUAL]);
+ changed |= CFG80211_NAN_CONF_CHANGED_DUAL;
+ }
+
+ if (!changed)
+ return -EINVAL;
+
+ return rdev_nan_change_conf(rdev, wdev, &conf, changed);
+}
+
static int nl80211_get_protocol_features(struct sk_buff *skb,
struct genl_info *info)
{
@@ -12293,6 +12327,14 @@ static const struct genl_ops nl80211_ops[] = {
NL80211_FLAG_NEED_RTNL,
},
{
+ .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
+ .doit = nl80211_nan_change_config,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
+ NL80211_FLAG_NEED_RTNL,
+ },
+ {
.cmd = NL80211_CMD_SET_MCAST_RATE,
.doit = nl80211_set_mcast_rate,
.policy = nl80211_policy,
diff --git a/net/wireless/rdev-ops.h b/net/wireless/rdev-ops.h
index 98c4c3bdcb11..11cf83c8ad4f 100644
--- a/net/wireless/rdev-ops.h
+++ b/net/wireless/rdev-ops.h
@@ -928,6 +928,23 @@ static inline void rdev_del_nan_func(struct cfg80211_registered_device *rdev,
trace_rdev_return_void(&rdev->wiphy);
}
+static inline int
+rdev_nan_change_conf(struct cfg80211_registered_device *rdev,
+ struct wireless_dev *wdev,
+ struct cfg80211_nan_conf *conf, u32 changes)
+{
+ int ret;
+
+ trace_rdev_nan_change_conf(&rdev->wiphy, wdev, conf, changes);
+ if (rdev->ops->nan_change_conf)
+ ret = rdev->ops->nan_change_conf(&rdev->wiphy, wdev, conf,
+ changes);
+ else
+ ret = -ENOTSUPP;
+ trace_rdev_return_int(&rdev->wiphy, ret);
+ return ret;
+}
+
static inline int rdev_set_mac_acl(struct cfg80211_registered_device *rdev,
struct net_device *dev,
struct cfg80211_acl_data *params)
diff --git a/net/wireless/trace.h b/net/wireless/trace.h
index 56089843d619..a3d0a91b1e09 100644
--- a/net/wireless/trace.h
+++ b/net/wireless/trace.h
@@ -1911,6 +1911,30 @@ TRACE_EVENT(rdev_start_nan,
__entry->dual)
);
+TRACE_EVENT(rdev_nan_change_conf,
+ TP_PROTO(struct wiphy *wiphy, struct wireless_dev *wdev,
+ struct cfg80211_nan_conf *conf, u32 changes),
+ TP_ARGS(wiphy, wdev, conf, changes),
+ TP_STRUCT__entry(
+ WIPHY_ENTRY
+ WDEV_ENTRY
+ __field(u8, master_pref)
+ __field(u8, dual);
+ __field(u32, changes);
+ ),
+ TP_fast_assign(
+ WIPHY_ASSIGN;
+ WDEV_ASSIGN;
+ __entry->master_pref = conf->master_pref;
+ __entry->dual = conf->dual;
+ __entry->changes = changes;
+ ),
+ TP_printk(WIPHY_PR_FMT ", " WDEV_PR_FMT
+ ", master preference: %u, dual: %d, changes: %x",
+ WIPHY_PR_ARG, WDEV_PR_ARG, __entry->master_pref,
+ __entry->dual, __entry->changes)
+);
+
DEFINE_EVENT(wiphy_wdev_evt, rdev_stop_nan,
TP_PROTO(struct wiphy *wiphy, struct wireless_dev *wdev),
TP_ARGS(wiphy, wdev)