On Fri, Jan 20, 2012 at 7:44 PM, Sam Leffler <sleffler@xxxxxxxxxxxx> wrote:
> On Fri, Jan 20, 2012 at 6:17 AM, Johannes Berg
> <johannes@xxxxxxxxxxxxxxxx> wrote:
>>
>> On Thu, 2012-01-12 at 09:53 -0800, Sam Leffler wrote:
>>
>> > + if (fixed_rate != -1) {
>> > + struct ieee80211_channel *chan = local->hw.conf.channel;
>> > + struct ieee80211_supported_band *sband =
>> > + local->hw.wiphy->bands[chan->band];
>> > + struct ieee80211_tx_rate *rates = info->control.rates;
>> > + int i;
>> > +
>> > + if (fixed_rate_flags & IEEE80211_TX_RC_MCS) {
>> > + WARN_ON(!sband->ht_cap.ht_supported);
>> > + rates[0].idx = fixed_rate;
>>
>> Unless I missed something, this would be *trivial* to trigger by
>> injection -- doesn't seem like a good idea to me.
>>
>
> Can unprivileged users inject packets? Is your preference to generate
> an error or just suppress the warning?
>
> -Sam
Yes, only the creation of monitor interfaces is restricted to root.
Once an interface is set up, anyone can inject.
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