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iwlwifi: mvm: refactor the way fw_key_table is handled

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Instead of keeping the fw_key_table bits set when the keys are removed
(i.e. in D3 entry or HW_RESTART flows), clear them and set them again
only when the keys have been successfully re-added.  This makes the
bitmask more closely tied to the actual firmware programming.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Luca Coelho 2015-11-11 01:06:17 +02:00 committed by Emmanuel Grumbach
parent 6ae57b293b
commit 9c3deeb51b
3 changed files with 8 additions and 6 deletions
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3
drivers/net/wireless/intel/iwlwifi/mvm/d3.c
View file

@ -779,6 +779,9 @@ static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
*/
set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
/* the fw is reset, so all the keys are cleared */
memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
mvm->ptk_ivlen = 0;
mvm->ptk_icvlen = 0;
mvm->ptk_ivlen = 0;

1
drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
View file

@ -984,6 +984,7 @@ static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
iwl_mvm_reset_phy_ctxts(mvm);
memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
memset(mvm->tfd_drained, 0, sizeof(mvm->tfd_drained));
memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));

10
drivers/net/wireless/intel/iwlwifi/mvm/sta.c
View file

@ -1198,8 +1198,6 @@ static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm)
if (max_offs < 0)
return STA_KEY_IDX_INVALID;
__set_bit(max_offs, mvm->fw_key_table);
return max_offs;
}
@ -1507,10 +1505,8 @@ int iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
}
ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast);
if (ret) {
__clear_bit(keyconf->hw_key_idx, mvm->fw_key_table);
if (ret)
goto end;
}
/*
* For WEP, the same key is used for multicast and unicast. Upload it
@ -1523,11 +1519,13 @@ int iwl_mvm_set_sta_key(struct iwl_mvm *mvm,
ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf,
key_offset, !mcast);
if (ret) {
__clear_bit(keyconf->hw_key_idx, mvm->fw_key_table);
__iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);
goto end;
}
}
__set_bit(key_offset, mvm->fw_key_table);
end:
IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
keyconf->cipher, keyconf->keylen, keyconf->keyidx,