xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

wil6210: store bss object and use cfg80211_connect_bss()

Browse Source 
In a fast disconnect/connect sequence, cfg80211_connect_result() can
fail to find the bss object which the driver is connecting to. Detailed
sequence of events:
* Driver is connected in STA mode
* Disconnect request arrives from user space. Driver disconnects and
  calls cfg80211_disconnected() which adds new event to the
  cfg80211_wq worker thread
* Connect request arrives from user space. cfg80211_connect() stores
  ssid/ssid_len and calls rdev_connect()
* __cfg80211_disconnected() runs in worker thread and zero
  wdev->ssid_len
* Connect succeeds. Driver calls cfg80211_connect_result() which fails
  to find the bss because wdev->ssid_len is zero

To overcome this, upon connect request, store the bss object in the
driver and upon connect completion pass it to kernel using
cfg80211_connect_bss().

Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Dedy Lansky
2017-03-08 13:52:15 +02:00
committed by Kalle Valo
parent 18618a9fba
commit bcdd49b074
4 changed files with 12 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/wireless/ath/wil6210/cfg80211.c
View File

@@ -681,6 +681,7 @@ static int wil_cfg80211_connect(struct wiphy *wiphy,
if (rc == 0) {
netif_carrier_on(ndev);
wil6210_bus_request(wil, WIL_MAX_BUS_REQUEST_KBPS);
wil->bss = bss;
/* Connect can take lots of time */
mod_timer(&wil->connect_timer,
jiffies + msecs_to_jiffies(2000));