* [PATCH V2] staging: rtl8188eu: Fix incorrect response to SIOCGIWESSID
@ 2017-11-25 19:32 Larry Finger
2017-11-28 13:17 ` Greg KH
0 siblings, 1 reply; 2+ messages in thread
From: Larry Finger @ 2017-11-25 19:32 UTC (permalink / raw)
To: gregkh; +Cc: netdev, devel, Larry Finger
When not associated with an AP, wifi device drivers should respond to the
SIOCGIWESSID ioctl with a zero-length string for the SSID, which is the
behavior expected by dhcpcd.
Currently, this driver returns an error code (-1) from the ioctl call,
which causes dhcpcd to assume that the device is not a wireless interface
and therefore it fails to work correctly with it thereafter.
This problem was reported and tested at
https://github.com/lwfinger/rtl8188eu/issues/234.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
---
v2 - completed missing subject
drivers/staging/rtl8188eu/os_dep/ioctl_linux.c | 14 ++++----------
1 file changed, 4 insertions(+), 10 deletions(-)
diff --git a/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c b/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
index c0664dc80bf2..446310775e90 100644
--- a/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
+++ b/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
@@ -1395,19 +1395,13 @@ static int rtw_wx_get_essid(struct net_device *dev,
if ((check_fwstate(pmlmepriv, _FW_LINKED)) ||
(check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE))) {
len = pcur_bss->Ssid.SsidLength;
-
- wrqu->essid.length = len;
-
memcpy(extra, pcur_bss->Ssid.Ssid, len);
-
- wrqu->essid.flags = 1;
} else {
- ret = -1;
- goto exit;
+ len = 0;
+ *extra = 0;
}
-
-exit:
-
+ wrqu->essid.length = len;
+ wrqu->essid.flags = 1;
return ret;
}
--
2.13.6
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH V2] staging: rtl8188eu: Fix incorrect response to SIOCGIWESSID
2017-11-25 19:32 [PATCH V2] staging: rtl8188eu: Fix incorrect response to SIOCGIWESSID Larry Finger
@ 2017-11-28 13:17 ` Greg KH
0 siblings, 0 replies; 2+ messages in thread
From: Greg KH @ 2017-11-28 13:17 UTC (permalink / raw)
To: Larry Finger; +Cc: devel, netdev
On Sat, Nov 25, 2017 at 01:32:38PM -0600, Larry Finger wrote:
> When not associated with an AP, wifi device drivers should respond to the
> SIOCGIWESSID ioctl with a zero-length string for the SSID, which is the
> behavior expected by dhcpcd.
>
> Currently, this driver returns an error code (-1) from the ioctl call,
> which causes dhcpcd to assume that the device is not a wireless interface
> and therefore it fails to work correctly with it thereafter.
>
> This problem was reported and tested at
> https://github.com/lwfinger/rtl8188eu/issues/234.
>
> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
> ---
>
> v2 - completed missing subject
Ah, nevermind, you already did...
^ permalink raw reply [flat|nested] 2+ messages in thread
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