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authorJohannes Berg <johannes@sipsolutions.net>2009-07-10 18:42:31 +0200
committerJohn W. Linville <linville@tuxdriver.com>2009-07-24 15:05:11 -0400
commit48ab905d1a81b7df33a33def04a890e4e0c51460 (patch)
tree928fb9eeb2edd8ff89138016f7ca4ffddb833821 /net
parent4697fe4f78df14d37cffa7e8d27cbb02a351c139 (diff)
nl80211: report BSS status
When connected to a BSS, or joined to an IBSS, we'll want to know in userspace without using wireless extensions, so report the BSS status in the BSS list. Userspace can query the BSS list, display all the information and retrieve the station information as well. For example (from hwsim): $ iw dev wlan1 scan dump BSS 02:00:00:00:00:00 (on wlan1) -- associated freq: 2462 beacon interval: 100 capability: ESS ShortSlotTime (0x0401) signal: -50.00 dBm SSID: j Supported rates: 1.0* 2.0* 5.5* 11.0* 6.0 9.0 12.0 18.0 DS Paramater set: channel 11 ERP: <no flags> Extended supported rates: 24.0 36.0 48.0 54.0 Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net')
-rw-r--r--net/wireless/nl80211.c65
1 files changed, 48 insertions, 17 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 45c5f9c8e51..da450ef1fc7 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -3094,11 +3094,15 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
struct cfg80211_registered_device *rdev,
- struct net_device *dev,
- struct cfg80211_bss *res)
+ struct wireless_dev *wdev,
+ struct cfg80211_internal_bss *intbss)
{
+ struct cfg80211_bss *res = &intbss->pub;
void *hdr;
struct nlattr *bss;
+ int i;
+
+ ASSERT_WDEV_LOCK(wdev);
hdr = nl80211hdr_put(msg, pid, seq, flags,
NL80211_CMD_NEW_SCAN_RESULTS);
@@ -3107,7 +3111,7 @@ static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
NLA_PUT_U32(msg, NL80211_ATTR_SCAN_GENERATION,
rdev->bss_generation);
- NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, dev->ifindex);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex);
bss = nla_nest_start(msg, NL80211_ATTR_BSS);
if (!bss)
@@ -3136,6 +3140,28 @@ static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
break;
}
+ switch (wdev->iftype) {
+ case NL80211_IFTYPE_STATION:
+ if (intbss == wdev->current_bss)
+ NLA_PUT_U32(msg, NL80211_BSS_STATUS,
+ NL80211_BSS_STATUS_ASSOCIATED);
+ else for (i = 0; i < MAX_AUTH_BSSES; i++) {
+ if (intbss != wdev->auth_bsses[i])
+ continue;
+ NLA_PUT_U32(msg, NL80211_BSS_STATUS,
+ NL80211_BSS_STATUS_AUTHENTICATED);
+ break;
+ }
+ break;
+ case NL80211_IFTYPE_ADHOC:
+ if (intbss == wdev->current_bss)
+ NLA_PUT_U32(msg, NL80211_BSS_STATUS,
+ NL80211_BSS_STATUS_IBSS_JOINED);
+ break;
+ default:
+ break;
+ }
+
nla_nest_end(msg, bss);
return genlmsg_end(msg, hdr);
@@ -3148,9 +3174,10 @@ static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
static int nl80211_dump_scan(struct sk_buff *skb,
struct netlink_callback *cb)
{
- struct cfg80211_registered_device *dev;
- struct net_device *netdev;
+ struct cfg80211_registered_device *rdev;
+ struct net_device *dev;
struct cfg80211_internal_bss *scan;
+ struct wireless_dev *wdev;
int ifidx = cb->args[0];
int start = cb->args[1], idx = 0;
int err;
@@ -3171,39 +3198,43 @@ static int nl80211_dump_scan(struct sk_buff *skb,
cb->args[0] = ifidx;
}
- netdev = dev_get_by_index(&init_net, ifidx);
- if (!netdev)
+ dev = dev_get_by_index(&init_net, ifidx);
+ if (!dev)
return -ENODEV;
- dev = cfg80211_get_dev_from_ifindex(ifidx);
- if (IS_ERR(dev)) {
- err = PTR_ERR(dev);
+ rdev = cfg80211_get_dev_from_ifindex(ifidx);
+ if (IS_ERR(rdev)) {
+ err = PTR_ERR(rdev);
goto out_put_netdev;
}
- spin_lock_bh(&dev->bss_lock);
- cfg80211_bss_expire(dev);
+ wdev = dev->ieee80211_ptr;
- list_for_each_entry(scan, &dev->bss_list, list) {
+ wdev_lock(wdev);
+ spin_lock_bh(&rdev->bss_lock);
+ cfg80211_bss_expire(rdev);
+
+ list_for_each_entry(scan, &rdev->bss_list, list) {
if (++idx <= start)
continue;
if (nl80211_send_bss(skb,
NETLINK_CB(cb->skb).pid,
cb->nlh->nlmsg_seq, NLM_F_MULTI,
- dev, netdev, &scan->pub) < 0) {
+ rdev, wdev, scan) < 0) {
idx--;
goto out;
}
}
out:
- spin_unlock_bh(&dev->bss_lock);
+ spin_unlock_bh(&rdev->bss_lock);
+ wdev_unlock(wdev);
cb->args[1] = idx;
err = skb->len;
- cfg80211_unlock_rdev(dev);
+ cfg80211_unlock_rdev(rdev);
out_put_netdev:
- dev_put(netdev);
+ dev_put(dev);
return err;
}