Am 14.11.2014 um 06:07 schrieb Chun-Yeow Yeoh:
> Secured mesh encrypts the unicast mgmt frame using the same
> key that used for encrypting the unicast data frame. The patch
> "ath9k_htc_firmware: fix the offset of CCMP header for mesh
> data frame" applied to open-ath9k-htc-firmware allows the
> ath9k_htc to be loaded without "nohwcrypt=1". Unfortunately,
> this is not working and we still need CCMP encryption of
> management frames to be done in software. Fix this.
>
> This patch is tested with the following hardwares:
> - TP-Link TL-WN821N v3 802.11n [Atheros AR7010+AR9287]
> - AR9271 802.11n
>
> and managed to work with peer mesh STA equipped with ath9k.
>
> Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@xxxxxxxxx>
> ---
> drivers/net/wireless/ath/ath9k/htc_drv_main.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_main.c b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
> index 689ac99..d3f65a2 100644
> --- a/drivers/net/wireless/ath/ath9k/htc_drv_main.c
> +++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
> @@ -1447,7 +1447,8 @@ static int ath9k_htc_set_key(struct ieee80211_hw *hw,
> key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
> if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
> key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
> - if (priv->ah->sw_mgmt_crypto &&
> + if ((vif->type == NL80211_IFTYPE_MESH_POINT ||
> + priv->ah->sw_mgmt_crypto) &&
> key->cipher == WLAN_CIPHER_SUITE_CCMP)
> key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX;
> ret = 0;
>
Hmm.. may be we should generally do it here:
if ((vif->type == NL80211_IFTYPE_ADHOC ||
vif->type == NL80211_IFTYPE_MESH_POINT) &&
(key->cipher == WLAN_CIPHER_SUITE_TKIP ||
key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
or probably set "sw_mgmt_crypto = true" in ath9k_hw_init_mfp() for all
usb devices?
--
Regards,
Oleksij
Attachment:
signature.asc
Description: OpenPGP digital signature
