2015-03-10 13:29:16

by Bartosz Markowski

Subject: [PATCH] ath10k: fix PMG by using AES-CMAC/IGTK software crypto

While testing with older supplicant, .drv_set_key() was failing due to
higher than ath10k firmware could handle key_index (WMI_MAX_KEY_INDEX == 3).

--
wpa_driver_nl80211_set_key: ifindex=15 alg=4 addr=0x7f02b129fbe3 key_idx=4 set_tx=0 seq_len=6 key_len=16
broadcast key
nl80211: set_key failed; err=-22 Invalid argument)
wlan0: WPA: Failed to configure IGTK to the driver
wlan0: RSN: Failed to configure IGTK
--

In order to fix this case (PMF: AES-CMAC/IGTK) force the AES_CMAC cipher to
be handled by software.

Signed-off-by: Bartosz Markowski <[email protected]>
---
drivers/net/wireless/ath/ath10k/mac.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index 1138f4f8923f..2264c06361b1 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -66,8 +66,8 @@ static int ath10k_send_key(struct ath10k_vif *arvif,
arg.key_cipher = WMI_CIPHER_WEP;
break;
case WLAN_CIPHER_SUITE_AES_CMAC:
- /* this one needs to be done in software */
- return 1;
+ WARN_ON(1)
+ return -EINVAL;
default:
ath10k_warn(ar, "cipher %d is not supported\n", key->cipher);
return -EOPNOTSUPP;
@@ -3995,6 +3995,10 @@ static int ath10k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
int ret = 0;
u32 flags = 0;

+ /* this one needs to be done in software */
+ if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
+ return 1;
+
if (key->keyidx > WMI_MAX_KEY_INDEX)
return -ENOSPC;

--
2.1.2

2015-03-10 13:34:21

by Bartosz Markowski

Subject: Re: [PATCH] ath10k: fix PMG by using AES-CMAC/IGTK software crypto

On 10 March 2015 at 14:29, Bartosz Markowski
<[email protected]> wrote:
> While testing with older supplicant, .drv_set_key() was failing due to
> higher than ath10k firmware could handle key_index (WMI_MAX_KEY_INDEX == 3).

I've sent a v2 (I forgot the ammend the missing semicolon).

> --
> wpa_driver_nl80211_set_key: ifindex=15 alg=4 addr=0x7f02b129fbe3 key_idx=4 set_tx=0 seq_len=6 key_len=16
> broadcast key
> nl80211: set_key failed; err=-22 Invalid argument)
> wlan0: WPA: Failed to configure IGTK to the driver
> wlan0: RSN: Failed to configure IGTK
> --
>
> In order to fix this case (PMF: AES-CMAC/IGTK) force the AES_CMAC cipher to
> be handled by software.
>
> Signed-off-by: Bartosz Markowski <[email protected]>
> ---
> drivers/net/wireless/ath/ath10k/mac.c | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
> index 1138f4f8923f..2264c06361b1 100644
> --- a/drivers/net/wireless/ath/ath10k/mac.c
> +++ b/drivers/net/wireless/ath/ath10k/mac.c
> @@ -66,8 +66,8 @@ static int ath10k_send_key(struct ath10k_vif *arvif,
> arg.key_cipher = WMI_CIPHER_WEP;
> break;
> case WLAN_CIPHER_SUITE_AES_CMAC:
> - /* this one needs to be done in software */
> - return 1;
> + WARN_ON(1)
> + return -EINVAL;
> default:
> ath10k_warn(ar, "cipher %d is not supported\n", key->cipher);
> return -EOPNOTSUPP;
> @@ -3995,6 +3995,10 @@ static int ath10k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
> int ret = 0;
> u32 flags = 0;
>
> + /* this one needs to be done in software */
> + if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC)
> + return 1;
> +
> if (key->keyidx > WMI_MAX_KEY_INDEX)
> return -ENOSPC;
>
> --
> 2.1.2
>



--
Bartosz