STA iface:
ath: phy0: Set HW Key 0 (pairwise) vif: 2c:d0:5a:d3:f1:e9 sta:
f4:b7:e2:38:83:f3 - idx: 4
ath: phy0: Set HW Key 0 (group) vif: 2c:d0:5a:d3:f1:e9 sta:
(null) - idx: 1
P2P_CLIENT iface:
ath: phy0: Set HW Key 0 (pairwise) vif: 2e:d0:5a:d3:f1:e9 sta:
0c:8b:fd:1e:58:9f - idx: 68
ath: phy0: Set HW Key 0 (group) vif: 2e:d0:5a:d3:f1:e9 sta:
(null) - idx: 1
Seems we overwrite multicast hw key - both idx = 1
1) First patch I made:
diff --git a/drivers/net/wireless/ath/key.c b/drivers/net/wireless/ath/key.c
index 1816b4e..b15873b 100644
--- a/drivers/net/wireless/ath/key.c
+++ b/drivers/net/wireless/ath/key.c
@@ -507,6 +507,15 @@ int ath_key_config(struct ath_common *common,
if (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
switch (vif->type) {
+ case NL80211_IFTYPE_STATION:
+ idx = key->keyidx;
+ if (vif->bss_conf.bssid) {
+ ether_addr_copy(gmac, bssid);
+ gmac[0] |= 0x01;
+ mac = gmac;
+ idx =
ath_reserve_key_cache_slot(common, key->cipher);
+ }
+ break;
case NL80211_IFTYPE_AP:
memcpy(gmac, vif->addr, ETH_ALEN);
gmac[0] |= 0x01;
Multicast works fine for STA/P2P_CLIENT but multicast rekeying don't
work correctly, while we have 2 multicast keys installed for the same
bssid (eg. idx 6, 68) after rekey. Seem hw choose always key with
lowest idx - hw decrypt mcast packects correctly every second rekey
:-)
BTW, this needs attention to be sure hw decrypt frames correctly - I
am checking RX_FLAG_DECRYPTED flag, while often HW send crypted
packets and mac80211 decrypt them correctly (every second rekey for
example). So, some mixture of hwcrypt and swcrypt is seen :)
2) works perfectly when ath9k loaded with nohwcrypt=1
Any ideas how to solve this correctly (is it possible with hwcrypt at all)?
BR
Janusz
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