When, for instance, a new IBSS peer is found, userspace
wants to be notified. Add events for all new stations
that mac80211 learns about.
Signed-off-by: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
---
include/net/cfg80211.h | 12 ++++++++++++
net/mac80211/sta_info.c | 5 +++++
net/wireless/mlme.c | 10 ++++++++++
net/wireless/nl80211.c | 21 ++++++++++++++++++++-
net/wireless/nl80211.h | 4 ++++
5 files changed, 51 insertions(+), 1 deletion(-)
--- wireless-testing.orig/net/wireless/mlme.c 2009-12-23 13:11:25.000000000 +0100
+++ wireless-testing/net/wireless/mlme.c 2009-12-23 13:11:27.000000000 +0100
@@ -718,3 +718,13 @@ void cfg80211_remain_on_channel_expired(
channel_type, gfp);
}
EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
+
+void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
+ struct station_info *sinfo, gfp_t gfp)
+{
+ struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
+ struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+
+ nl80211_send_sta_event(rdev, dev, mac_addr, sinfo, gfp);
+}
+EXPORT_SYMBOL(cfg80211_new_sta);
--- wireless-testing.orig/net/wireless/nl80211.c 2009-12-23 13:11:25.000000000 +0100
+++ wireless-testing/net/wireless/nl80211.c 2009-12-23 13:11:27.000000000 +0100
@@ -1642,7 +1642,7 @@ static int parse_station_flags(struct ge
static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
int flags, struct net_device *dev,
- u8 *mac_addr, struct station_info *sinfo)
+ const u8 *mac_addr, struct station_info *sinfo)
{
void *hdr;
struct nlattr *sinfoattr, *txrate;
@@ -5356,6 +5356,25 @@ void nl80211_send_remain_on_channel_canc
channel_type, 0, gfp);
}
+void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
+ struct net_device *dev, const u8 *mac_addr,
+ struct station_info *sinfo, gfp_t gfp)
+{
+ struct sk_buff *msg;
+
+ msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
+ if (!msg)
+ return;
+
+ if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
+ nl80211_mlme_mcgrp.id, gfp);
+}
+
/* initialisation/exit functions */
int nl80211_init(void)
--- wireless-testing.orig/net/wireless/nl80211.h 2009-12-23 13:11:25.000000000 +0100
+++ wireless-testing/net/wireless/nl80211.h 2009-12-23 13:11:27.000000000 +0100
@@ -70,4 +70,8 @@ void nl80211_send_remain_on_channel_canc
u64 cookie, struct ieee80211_channel *chan,
enum nl80211_channel_type channel_type, gfp_t gfp);
+void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
+ struct net_device *dev, const u8 *mac_addr,
+ struct station_info *sinfo, gfp_t gfp);
+
#endif /* __NET_WIRELESS_NL80211_H */
--- wireless-testing.orig/include/net/cfg80211.h 2009-12-23 13:11:25.000000000 +0100
+++ wireless-testing/include/net/cfg80211.h 2009-12-23 13:11:27.000000000 +0100
@@ -2195,4 +2195,16 @@ void cfg80211_remain_on_channel_expired(
enum nl80211_channel_type channel_type,
gfp_t gfp);
+
+/**
+ * cfg80211_new_sta - notify userspace about station
+ *
+ * @dev: the netdev
+ * @mac_addr: the station's address
+ * @sinfo: the station information
+ * @gfp: allocation flags
+ */
+void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
+ struct station_info *sinfo, gfp_t gfp);
+
#endif /* __NET_CFG80211_H */
--- wireless-testing.orig/net/mac80211/sta_info.c 2009-12-23 13:11:13.000000000 +0100
+++ wireless-testing/net/mac80211/sta_info.c 2009-12-23 13:11:27.000000000 +0100
@@ -359,6 +359,7 @@ int sta_info_insert(struct sta_info *sta
{
struct ieee80211_local *local = sta->local;
struct ieee80211_sub_if_data *sdata = sta->sdata;
+ struct station_info sinfo;
unsigned long flags;
int err = 0;
@@ -408,6 +409,10 @@ int sta_info_insert(struct sta_info *sta
spin_unlock_irqrestore(&local->sta_lock, flags);
+ sinfo.filled = 0;
+ sinfo.generation = local->sta_generation;
+ cfg80211_new_sta(sdata->dev, sta->sta.addr, &sinfo, GFP_ATOMIC);
+
#ifdef CONFIG_MAC80211_DEBUGFS
/*
* Debugfs entry adding might sleep, so schedule process
--
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