iwlwifi: mvm: don't set K1/K2 for AES-CMAC

According to firmware engineers, the firmware has never required
these fields and the values have always been calculated, they were
just leftovers from a previous implementation.

Therefore remove the unnecessary calculation.

Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/drivers/net/wireless/iwlwifi/mvm/fw-api-sta.h b/drivers/net/wireless/iwlwifi/mvm/fw-api-sta.h
index 21dd5b7..493a8bd 100644 (file)
--- a/drivers/net/wireless/iwlwifi/mvm/fw-api-sta.h
+++ b/drivers/net/wireless/iwlwifi/mvm/fw-api-sta.h
@@ -366,8 +366,8 @@ struct iwl_mvm_rm_sta_cmd {
  * ( MGMT_MCAST_KEY = 0x1f )
  * @ctrl_flags: %iwl_sta_key_flag
  * @IGTK:
- * @K1: IGTK master key
- * @K2: IGTK sub key
+ * @K1: unused
+ * @K2: unused
  * @sta_id: station ID that support IGTK
  * @key_id:
  * @receive_seq_cnt: initial RSC/PN needed for replay check

diff --git a/drivers/net/wireless/iwlwifi/mvm/sta.c b/drivers/net/wireless/iwlwifi/mvm/sta.c
index d68dc69..3d2fbf1 100644 (file)
--- a/drivers/net/wireless/iwlwifi/mvm/sta.c
+++ b/drivers/net/wireless/iwlwifi/mvm/sta.c
@@ -1277,8 +1277,6 @@ static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm,
                const u8 *pn;
 
                memcpy(igtk_cmd.IGTK, keyconf->key, keyconf->keylen);
-               ieee80211_aes_cmac_calculate_k1_k2(keyconf,
-                                                  igtk_cmd.K1, igtk_cmd.K2);
                ieee80211_get_key_rx_seq(keyconf, 0, &seq);
                pn = seq.aes_cmac.pn;
                igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) |