diff options
| author | Jukka Rissanen <jukka.rissanen@linux.intel.com> | 2014-12-15 14:25:39 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2014-12-18 16:38:44 +0300 |
| commit | 93a1e86ce10e4898f9ca9cd09d659a8a7780ee5e (patch) | |
| tree | 42155b15af02c90d9c824ffbc2d3ad8b6d4a9b34 /net/wireless/nl80211.c | |
| parent | 31a60ed1e95ab8afbadb65599bef12b195080a0c (diff) | |
| download | linux-93a1e86ce10e4898f9ca9cd09d659a8a7780ee5e.tar.xz | |
nl80211: Stop scheduled scan if netlink client disappears
An attribute NL80211_ATTR_SOCKET_OWNER can be set by the scan initiator.
If present, the attribute will cause the scan to be stopped if the client
dies.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless/nl80211.c')
| -rw-r--r-- | net/wireless/nl80211.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index bacdf22fa472..702920134b34 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -6214,6 +6214,9 @@ static int nl80211_start_sched_scan(struct sk_buff *skb, sched_scan_req->dev = dev; sched_scan_req->wiphy = &rdev->wiphy; + if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) + sched_scan_req->owner_nlportid = info->snd_portid; + rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req); nl80211_send_sched_scan(rdev, dev, @@ -12618,6 +12621,13 @@ static int nl80211_netlink_notify(struct notifier_block * nb, list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) { bool schedule_destroy_work = false; + bool schedule_scan_stop = false; + struct cfg80211_sched_scan_request *sched_scan_req = + rcu_dereference(rdev->sched_scan_req); + + if (sched_scan_req && notify->portid && + sched_scan_req->owner_nlportid == notify->portid) + schedule_scan_stop = true; list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) { cfg80211_mlme_unregister_socket(wdev, notify->portid); @@ -12648,6 +12658,12 @@ static int nl80211_netlink_notify(struct notifier_block * nb, spin_unlock(&rdev->destroy_list_lock); schedule_work(&rdev->destroy_work); } + } else if (schedule_scan_stop) { + sched_scan_req->owner_nlportid = 0; + + if (rdev->ops->sched_scan_stop && + rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) + schedule_work(&rdev->sched_scan_stop_wk); } } |