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authorJohannes Berg <johannes@sipsolutions.net>2009-07-07 05:56:11 +0400
committerJohn W. Linville <linville@tuxdriver.com>2009-07-10 23:02:32 +0400
commit667503ddcb96f3b10211f997fe55907fa7509841 (patch)
tree5e2559e94a716bb81bfc7566e3e3a05267810c31 /net/wireless/nl80211.h
parent4f5dadcebb55fccef34722bbbf6401d39124c8a4 (diff)
downloadlinux-667503ddcb96f3b10211f997fe55907fa7509841.tar.xz
cfg80211: fix locking
Over time, a lot of locking issues have crept into the smarts of cfg80211, so e.g. scan completion can race against a new scan, IBSS join can race against leaving an IBSS, etc. Introduce a new per-interface lock that protects most of the per-interface data that we need to keep track of, and sprinkle assertions about that lock everywhere. Some things now need to be offloaded to work structs so that we don't require being able to sleep in functions the drivers call. The exception to that are the MLME callbacks (rx_auth etc.) that currently only mac80211 calls because it was easier to do that there instead of in cfg80211, and future drivers implementing those calls will, if they ever exist, probably need to use a similar scheme like mac80211 anyway... In order to be able to handle _deauth and _disassoc properly, introduce a cookie passed to it that will determine locking requirements. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/wireless/nl80211.h')
-rw-r--r--net/wireless/nl80211.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/wireless/nl80211.h b/net/wireless/nl80211.h
index cf3708b48c29..44cc2a76a1b0 100644
--- a/net/wireless/nl80211.h
+++ b/net/wireless/nl80211.h
@@ -42,7 +42,7 @@ void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp);
void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
struct net_device *netdev, u16 reason,
- u8 *ie, size_t ie_len, bool from_ap, gfp_t gfp);
+ const u8 *ie, size_t ie_len, bool from_ap);
void
nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,