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authorArend van Spriel <arend@broadcom.com>2013-04-18 15:49:00 +0200
committerJohannes Berg <johannes.berg@intel.com>2013-04-22 15:48:00 +0200
commit5de17984898c5758fc6ebe08eccea9f4b6548914 (patch)
tree17aab780c025cfac0bd5a8b010b8ea9c138ff780 /net/wireless/mlme.c
parenta36473621c871df14bbf2106ab0721b475aac8e0 (diff)
downloadop-kernel-dev-5de17984898c5758fc6ebe08eccea9f4b6548914.zip
op-kernel-dev-5de17984898c5758fc6ebe08eccea9f4b6548914.tar.gz
cfg80211: introduce critical protocol indication from user-space
Some protocols need a more reliable connection to complete successful in reasonable time. This patch adds a user-space API to indicate the wireless driver that a critical protocol is about to commence and when it is done, using nl80211 primitives NL80211_CMD_CRIT_PROTOCOL_START and NL80211_CRIT_PROTOCOL_STOP. There can be only on critical protocol session started per registered cfg80211 device. The driver can support this by implementing the cfg80211 callbacks .crit_proto_start() and .crit_proto_stop(). Examples of protocols that can benefit from this are DHCP, EAPOL, APIPA. Exactly how the link can/should be made more reliable is up to the driver. Things to consider are avoid scanning, no multi-channel operations, and alter coexistence schemes. Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com> Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com> Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless/mlme.c')
-rw-r--r--net/wireless/mlme.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 390198b..0c7b7dd 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -648,6 +648,11 @@ void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlportid)
spin_unlock_bh(&wdev->mgmt_registrations_lock);
+ if (nlportid && rdev->crit_proto_nlportid == nlportid) {
+ rdev->crit_proto_nlportid = 0;
+ rdev_crit_proto_stop(rdev, wdev);
+ }
+
if (nlportid == wdev->ap_unexpected_nlportid)
wdev->ap_unexpected_nlportid = 0;
}
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