Hello,
I have a short question:
I wonder how can a command like :
"iwconfig wlan0 mode Master"
should succeed ;
I did tried it on some wireless NIC, which probably does not support
master mode, and got:
"Error for wireless request "Set Mode" (8B06) :
SET failed on device wlan0 ; Invalid argument."
The reason is this:
I look at the kernel code which implements receiving the set mode IOCTL.
The method is ieee80211_ioctl_siwmode(), in net/mac80211/wext.c.
(I am looking at the last git wireless tree; it appears here below).
As far as I can see, we don't handle the "Master" mode in the case
sentence , so when we try to set the mode to Master,
by :
"iwconfig wlan0 mode Master"
we will always get to the default and exit with
"return -EINVAL"
Am I wrong here ? can somebody please explain?
static int ieee80211_ioctl_siwmode(struct net_device *dev,
struct iw_request_info *info,
__u32 *mode, char *extra)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
int type;
if (sdata->vif.type == IEEE80211_IF_TYPE_VLAN)
return -EOPNOTSUPP;
switch (*mode) {
case IW_MODE_INFRA:
type = IEEE80211_IF_TYPE_STA;
break;
case IW_MODE_ADHOC:
type = IEEE80211_IF_TYPE_IBSS;
break;
case IW_MODE_REPEAT:
type = IEEE80211_IF_TYPE_WDS;
break;
case IW_MODE_MONITOR:
type = IEEE80211_IF_TYPE_MNTR;
break;
default:
return -EINVAL;
}
return ieee80211_if_change_type(sdata, type);
}
Any ideas?
Regards,
DS
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