fix up hostapd for mac80211

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@9554 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 208 insertions, 0 deletions

diff --git a/package/mac80211/patches/024-nl80211-get-sta.patch b/package/mac80211/patches/024-nl80211-get-sta.patch
new file mode 100644
index 0000000000..198ad1876b
--- /dev/null
+++ b/package/mac80211/patches/024-nl80211-get-sta.patch
@@ -0,0 +1,208 @@
+Subject: cfg80211/nl80211: implement station attribute retrieval
+
+After a station is added to the kernel's structures, userspace
+has to be able to retrieve statistics about that station, especially
+whether the station was idle and how much bytes were transferred
+to and from it. This adds the necessary code to nl80211.
+
+Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
+
+---
+ include/linux/nl80211.h |   28 ++++++++++++++++
+ include/net/cfg80211.h  |   35 ++++++++++++++++++++
+ net/wireless/nl80211.c  |   82 +++++++++++++++++++++++++++++++++++++++++++++++-
+ 3 files changed, 144 insertions(+), 1 deletion(-)
+
+--- everything.orig/include/linux/nl80211.h	2007-11-08 17:15:15.961529840 +0100
++++ everything/include/linux/nl80211.h	2007-11-08 17:17:00.891547364 +0100
+@@ -157,6 +157,9 @@ 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
++ *	given for %NL80211_CMD_GET_STATION, nested attribute containing
++ *	info as possible, see &enum nl80211_sta_stats.
+  *
+  * @NL80211_ATTR_MAX: highest attribute number currently defined
+  * @__NL80211_ATTR_AFTER_LAST: internal use
+@@ -190,6 +193,7 @@ enum nl80211_attrs {
+ 	NL80211_ATTR_STA_LISTEN_INTERVAL,
+ 	NL80211_ATTR_STA_SUPPORTED_RATES,
+ 	NL80211_ATTR_STA_VLAN,
++	NL80211_ATTR_STA_STATS,
+ 
+ 	/* add attributes here, update the policy in nl80211.c */
+ 
+@@ -252,4 +256,28 @@ enum nl80211_sta_flags {
+ 	NL80211_STA_FLAG_MAX = __NL80211_STA_FLAG_AFTER_LAST - 1
+ };
+ 
++/**
++ * enum nl80211_sta_stats - station statistics
++ *
++ * These attribute types are used with %NL80211_ATTR_STA_STATS
++ * 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
++ */
++enum nl80211_sta_stats {
++	__NL80211_STA_STAT_INVALID,
++	NL80211_STA_STAT_INACTIVE_TIME,
++	NL80211_STA_STAT_RX_BYTES,
++	NL80211_STA_STAT_TX_BYTES,
++
++	/* keep last */
++	__NL80211_STA_STAT_AFTER_LAST,
++	NL80211_STA_STAT_MAX = __NL80211_STA_STAT_AFTER_LAST - 1
++};
++
+ #endif /* __LINUX_NL80211_H */
+--- everything.orig/include/net/cfg80211.h	2007-11-08 17:15:15.971532444 +0100
++++ everything/include/net/cfg80211.h	2007-11-08 17:17:00.891547364 +0100
+@@ -130,6 +130,39 @@ struct station_parameters {
+ 	u8 supported_rates_len;
+ };
+ 
++/**
++ * enum station_stats_flags - station statistics flags
++ *
++ * Used by the driver to indicate which info in &struct station_stats
++ * it has filled in during get_station().
++ *
++ * @STATION_STAT_INACTIVE_TIME: @inactive_time filled
++ * @STATION_STAT_RX_BYTES: @rx_bytes filled
++ * @STATION_STAT_TX_BYTES: @tx_bytes filled
++ */
++enum station_stats_flags {
++	STATION_STAT_INACTIVE_TIME	= 1<<0,
++	STATION_STAT_RX_BYTES		= 1<<1,
++	STATION_STAT_TX_BYTES		= 1<<2,
++};
++
++/**
++ * struct station_stats - station statistics
++ *
++ * Station information filled by driver for get_station().
++ *
++ * @filled: bitflag of flags from &enum station_stats_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
++ */
++struct station_stats {
++	u32 filled;
++	u32 inactive_time;
++	u32 rx_bytes;
++	u32 tx_bytes;
++};
++
+ /* from net/wireless.h */
+ struct wiphy;
+ 
+@@ -209,6 +242,8 @@ struct cfg80211_ops {
+ 			       u8 *mac);
+ 	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);
+ };
+ 
+ #endif /* __NET_CFG80211_H */
+--- everything.orig/net/wireless/nl80211.c	2007-11-08 17:15:15.981533909 +0100
++++ everything/net/wireless/nl80211.c	2007-11-08 17:17:00.901534235 +0100
+@@ -751,9 +751,89 @@ static int parse_station_flags(struct nl
+ 	return 0;
+ }
+ 
++static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
++				int flags, struct net_device *dev,
++				u8 *mac_addr, struct station_stats *stats)
++{
++	void *hdr;
++	struct nlattr *statsattr;
++
++	hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
++	if (!hdr)
++		return -1;
++
++	NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
++	NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr);
++
++	statsattr = nla_nest_start(msg, NL80211_ATTR_STA_STATS);
++	if (!statsattr)
++		goto nla_put_failure;
++	if (stats->filled & STATION_STAT_INACTIVE_TIME)
++		NLA_PUT_U32(msg, NL80211_STA_STAT_INACTIVE_TIME,
++			    stats->inactive_time);
++	if (stats->filled & STATION_STAT_RX_BYTES)
++		NLA_PUT_U32(msg, NL80211_STA_STAT_RX_BYTES,
++			    stats->rx_bytes);
++	if (stats->filled & STATION_STAT_TX_BYTES)
++		NLA_PUT_U32(msg, NL80211_STA_STAT_TX_BYTES,
++			    stats->tx_bytes);
++
++	nla_nest_end(msg, statsattr);
++
++	return genlmsg_end(msg, hdr);
++
++ nla_put_failure:
++	return genlmsg_cancel(msg, hdr);
++}
++
++
+ static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
+ {
+-	return -EOPNOTSUPP;
++	struct cfg80211_registered_device *drv;
++	int err;
++	struct net_device *dev;
++	struct station_stats stats;
++	struct sk_buff *msg;
++	u8 *mac_addr = NULL;
++
++	memset(&stats, 0, sizeof(stats));
++
++	if (!info->attrs[NL80211_ATTR_MAC])
++		return -EINVAL;
++
++	mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
++
++	err = get_drv_dev_by_info_ifindex(info, &drv, &dev);
++	if (err)
++		return err;
++
++	if (!drv->ops->get_station) {
++		err = -EOPNOTSUPP;
++		goto out;
++	}
++
++	rtnl_lock();
++	err = drv->ops->get_station(&drv->wiphy, dev, mac_addr, &stats);
++	rtnl_unlock();
++
++	msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
++	if (!msg)
++		goto out;
++
++	if (nl80211_send_station(msg, info->snd_pid, info->snd_seq, 0,
++				 dev, mac_addr, &stats) < 0)
++		goto out_free;
++
++	err = genlmsg_unicast(msg, info->snd_pid);
++	goto out;
++
++ out_free:
++	nlmsg_free(msg);
++
++ out:
++	cfg80211_put_dev(drv);
++	dev_put(dev);
++	return err;
+ }
+ 
+ /*