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authorStanislaw Gruszka <sgruszka@redhat.com>2013-02-28 10:55:25 +0100
committerJohannes Berg <johannes.berg@intel.com>2013-03-06 16:35:55 +0100
commit8125696991194aacb1173b6e8196d19098b44e17 (patch)
tree870dacf2225b328a8393be930128b056dfee0539 /net/wireless/core.h
parent30c97120c6c7893e5c6857a16229699b2b79dfbe (diff)
cfg80211/mac80211: disconnect on suspend
If possible that after suspend, cfg80211 will receive request to disconnect what require action on interface that was removed during suspend. Problem can manifest itself by various warnings similar to below one: WARNING: at net/mac80211/driver-ops.h:12 ieee80211_bss_info_change_notify+0x2f9/0x300 [mac80211]() wlan0: Failed check-sdata-in-driver check, flags: 0x4 Call Trace: [<c043e0b3>] warn_slowpath_fmt+0x33/0x40 [<f83707c9>] ieee80211_bss_info_change_notify+0x2f9/0x300 [mac80211] [<f83a660a>] ieee80211_recalc_ps_vif+0x2a/0x30 [mac80211] [<f83a6706>] ieee80211_set_disassoc+0xf6/0x500 [mac80211] [<f83a9441>] ieee80211_mgd_deauth+0x1f1/0x280 [mac80211] [<f8381b36>] ieee80211_deauth+0x16/0x20 [mac80211] [<f8261e70>] cfg80211_mlme_down+0x70/0xc0 [cfg80211] [<f8264de1>] __cfg80211_disconnect+0x1b1/0x1d0 [cfg80211] To fix the problem disconnect from any associated network before suspend. User space is responsible to establish connection again after resume. This basically need to be done by user space anyway, because associated stations can go away during suspend (for example NetworkManager disconnects on suspend and connect on resume by default). Patch also handle situation when driver refuse to suspend with wowlan configured and try to suspend again without it. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless/core.h')
-rw-r--r--net/wireless/core.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/wireless/core.h b/net/wireless/core.h
index 9a2be8ddac5..d5d06fdea96 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -500,6 +500,9 @@ int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
enum nl80211_iftype iftype, int num);
+void cfg80211_leave(struct cfg80211_registered_device *rdev,
+ struct wireless_dev *wdev);
+
#define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
#ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS