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authorKanchanapally, Vidyullatha <vkanchan@qti.qualcomm.com>2016-04-11 12:46:01 +0300
committerJohannes Berg <johannes.berg@intel.com>2016-04-26 10:40:12 +0300
commite705498945ad3a3b945771c5d683df064bb9819c (patch)
tree299d884abfafbe1b4b8f37b55dfff6861932ce92 /net/wireless/sme.c
parent739960f128e5a1f251659a4430a8898087701099 (diff)
downloadlinux-e705498945ad3a3b945771c5d683df064bb9819c.tar.xz
cfg80211: Add option to report the bss entry in connect result
Since cfg80211 maintains separate BSS table entries for APs if the same BSSID, SSID pair is seen on multiple channels, it is possible that it can map the current_bss to a BSS entry on the wrong channel. This current_bss will not get flushed unless disconnected and cfg80211 reports a wrong channel as the associated channel. Fix this by introducing a new cfg80211_connect_bss() function which is similar to cfg80211_connect_result(), but it includes an additional parameter: the bss the STA is connected to. This allows drivers to provide the exact bss entry that matches the BSS to which the connection was completed. Reviewed-by: Jouni Malinen <jouni@qca.qualcomm.com> Signed-off-by: Vidyullatha Kanchanapally <vkanchan@qti.qualcomm.com> Signed-off-by: Sunil Dutt <usdutt@qti.qualcomm.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless/sme.c')
-rw-r--r--net/wireless/sme.c28
1 files changed, 22 insertions, 6 deletions
diff --git a/net/wireless/sme.c b/net/wireless/sme.c
index e22e5b83cfa9..d814279fb556 100644
--- a/net/wireless/sme.c
+++ b/net/wireless/sme.c
@@ -753,19 +753,32 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
kfree(country_ie);
}
-void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
- const u8 *req_ie, size_t req_ie_len,
- const u8 *resp_ie, size_t resp_ie_len,
- u16 status, gfp_t gfp)
+/* Consumes bss object one way or another */
+void cfg80211_connect_bss(struct net_device *dev, const u8 *bssid,
+ struct cfg80211_bss *bss, const u8 *req_ie,
+ size_t req_ie_len, const u8 *resp_ie,
+ size_t resp_ie_len, u16 status, gfp_t gfp)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct cfg80211_event *ev;
unsigned long flags;
+ if (bss) {
+ /* Make sure the bss entry provided by the driver is valid. */
+ struct cfg80211_internal_bss *ibss = bss_from_pub(bss);
+
+ if (WARN_ON(list_empty(&ibss->list))) {
+ cfg80211_put_bss(wdev->wiphy, bss);
+ return;
+ }
+ }
+
ev = kzalloc(sizeof(*ev) + req_ie_len + resp_ie_len, gfp);
- if (!ev)
+ if (!ev) {
+ cfg80211_put_bss(wdev->wiphy, bss);
return;
+ }
ev->type = EVENT_CONNECT_RESULT;
if (bssid)
@@ -780,6 +793,9 @@ void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
ev->cr.resp_ie_len = resp_ie_len;
memcpy((void *)ev->cr.resp_ie, resp_ie, resp_ie_len);
}
+ if (bss)
+ cfg80211_hold_bss(bss_from_pub(bss));
+ ev->cr.bss = bss;
ev->cr.status = status;
spin_lock_irqsave(&wdev->event_lock, flags);
@@ -787,7 +803,7 @@ void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
spin_unlock_irqrestore(&wdev->event_lock, flags);
queue_work(cfg80211_wq, &rdev->event_work);
}
-EXPORT_SYMBOL(cfg80211_connect_result);
+EXPORT_SYMBOL(cfg80211_connect_bss);
/* Consumes bss object one way or another */
void __cfg80211_roamed(struct wireless_dev *wdev,