Stanislaw Gruszka <sgruszka@xxxxxxxxxx> writes: > On Tue, Jan 15, 2019 at 02:01:29PM +0000, Bernd Edlinger wrote: >> Apparently the rt2x61 firmware fails temporarily to decode >> broadcast packets if the shared keys are not assigned >> in the "correct" sequence. At the same time unicast >> packets work fine, since they are encrypted with the >> pairwise key. >> >> At least with WPA2 CCMP mode the shared keys are >> set in the following sequence: keyidx=1, 2, 1, 2. >> After a while only keyidx 2 gets decrypted, and >> keyidx 1 is ignored, probably because there is never >> a keyidx 3. >> >> Symptoms are arping -b works for 10 minutes, since >> keyidx=2 is used for broadcast, and then it stops >> working for 10 minutes, because keyidx=1 is used. >> That failure mode repeats forever. >> >> Note, the firmware does not even know which keyidx >> corresponds to which hw_key_idx so the firmware is >> trying to be smarter than the driver, which is bound >> to fail. >> >> As workaround the function rt61pci_config_shared_key >> requests software decryption of the shared keys, >> by returning EOPNOTSUPP. However, pairwise keys are >> still handled by hardware which works just fine. >> >> Signed-off-by: Bernd Edlinger <bernd.edlinger@xxxxxxxxxx> > > Acked-by: Stanislaw Gruszka <sgruszka@xxxxxxxxxx> The prefix should be "rt2x00:", I can change that. -- Kalle Valo
