> -----Message d'origine----- > De : Emmanuel Grumbach [mailto:egrumbach@xxxxxxxxx] > Envoyé : mardi 29 décembre 2015 15:20 > À : Cedric VONCKEN > Cc : linux-wireless > Objet : Re: Mac80211 : Wpa rekeying issue > > On Tue, Dec 29, 2015 at 3:01 PM, Cedric VONCKEN <cedric.voncken@xxxxxxxxx> > wrote: > > Hi, > > > > My test plateform is: > > 2 equipements > > Both equipment used compat version 2015-07-21 from openwrt. > > Both equipment used security WPA2 > > > > The equipment #1 is an AP. > > The Group rekey interval is set to 3601s > > The Pair rekey interval set to 50s (I reduced this value to > > show the issue often) > > The Master rekey interval is set to 86400 s. > > > > The equipment #2 is a sta+wds > > > > I used a 5GHz channel to have a free channel (without other AP) I > > connected a computer on each equipment. > > > > To reproduce the issue: > > I ran iperf udp@50Mbps from computer connected to the AP to > > the computer connected to the sta. After several WPA2 rekeying, iperf > > server side didn't received any frame. > > > > I investigated in the driver. All packets are dropped in sta side, > > because the function ieee80211_crypto_ccmp_decrypt return > > Rx_DROP_UNUSABLE. This function return this code because the test > > if(memcmp(pn,key->u.ccmp.rx_pn[queue],IEEE8021_CCMP_PN_LEN) <=0) > > return true. > > > > Have you any idea to fix this issue? > > > > I don't remember exactly what we had, but you may look at > http://permalink.gmane.org/gmane.linux.kernel.wireless.general/137742 Thanks for the link, I think I'm in the same situation. How can I fix this issue? Because the patch sent by Alexander Wetzel was rejected by Johannes (for security reason), and if I disable the hw crypto I will have performance issue. -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
