@@ -2268,12 +2268,6 @@ struct ieee80211_txq {
* @IEEE80211_HW_SUPPORTS_ONLY_HE_MULTI_BSSID: Hardware supports multi BSSID
* only for HE APs. Applies if @IEEE80211_HW_SUPPORTS_MULTI_BSSID is set.
*
- * @IEEE80211_HW_EXT_KEY_ID_NATIVE: Driver and hardware are supporting Extended
- * Key ID and can handle two unicast keys per station for Rx and Tx.
- *
- * @IEEE80211_HW_NO_AMPDU_KEYBORDER_SUPPORT: The card/driver can't handle
- * active Tx A-MPDU sessions with Extended Key IDs during rekey.
- *
* @NUM_IEEE80211_HW_FLAGS: number of hardware flags, used for sizing arrays
*/
enum ieee80211_hw_flags {
@@ -2325,8 +2319,6 @@ enum ieee80211_hw_flags {
IEEE80211_HW_TX_STATUS_NO_AMPDU_LEN,
IEEE80211_HW_SUPPORTS_MULTI_BSSID,
IEEE80211_HW_SUPPORTS_ONLY_HE_MULTI_BSSID,
- IEEE80211_HW_EXT_KEY_ID_NATIVE,
- IEEE80211_HW_NO_AMPDU_KEYBORDER_SUPPORT,
/* keep last, obviously */
NUM_IEEE80211_HW_FLAGS
@@ -271,8 +271,6 @@ static const char *hw_flag_names[] = {
FLAG(TX_STATUS_NO_AMPDU_LEN),
FLAG(SUPPORTS_MULTI_BSSID),
FLAG(SUPPORTS_ONLY_HE_MULTI_BSSID),
- FLAG(EXT_KEY_ID_NATIVE),
- FLAG(NO_AMPDU_KEYBORDER_SUPPORT),
#undef FLAG
};
@@ -270,8 +270,7 @@ int ieee80211_set_tx_key(struct ieee80211_key *key)
sta->ptk_idx = key->conf.keyidx;
- if (ieee80211_hw_check(&local->hw, NO_AMPDU_KEYBORDER_SUPPORT))
- clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
+ clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
ieee80211_check_fast_xmit(sta);
return 0;
@@ -289,16 +288,15 @@ static void ieee80211_pairwise_rekey(struct ieee80211_key *old,
if (new->conf.flags & IEEE80211_KEY_FLAG_NO_AUTO_TX) {
/* Extended Key ID key install, initial one or rekey */
- if (sta->ptk_idx != INVALID_PTK_KEYIDX &&
- ieee80211_hw_check(&local->hw,
- NO_AMPDU_KEYBORDER_SUPPORT)) {
+ if (sta->ptk_idx != INVALID_PTK_KEYIDX) {
/* Aggregation Sessions with Extended Key ID must not
* mix MPDUs with different keyIDs within one A-MPDU.
- * Tear down any running Tx aggregation and all new
- * Rx/Tx aggregation request during rekey if the driver
- * asks us to do so. (Blocking Tx only would be
- * sufficient but WLAN_STA_BLOCK_BA gets the job done
- * for the few ms we need it.)
+ * Tear down running Tx aggregation sessions and block
+ * new Rx/Tx aggregation requests during rekey to
+ * ensure there are no A-MPDUs for the driver to
+ * aggregate. (Blocking Tx only would be sufficient but
+ * WLAN_STA_BLOCK_BA gets the job done for the few ms
+ * we need it.)
*/
set_sta_flag(sta, WLAN_STA_BLOCK_BA);
mutex_lock(&sta->ampdu_mlme.mtx);
@@ -1048,21 +1048,15 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
}
}
- /* Enable Extended Key IDs when driver allowed it, or when it
- * supports neither HW crypto nor A-MPDUs
+ /* Mac80211 and therefore all drivers using SW crypto only
+ * are able to handle PTK rekeys and Extended Key ID.
*/
- if ((!local->ops->set_key &&
- !ieee80211_hw_check(hw, AMPDU_AGGREGATION)) ||
- ieee80211_hw_check(&local->hw, EXT_KEY_ID_NATIVE))
- wiphy_ext_feature_set(local->hw.wiphy,
- NL80211_EXT_FEATURE_EXT_KEY_ID);
-
- /* Mac80211 and therefore all cards only using SW crypto are able to
- * handle PTK rekeys correctly
- */
- if (!local->ops->set_key)
+ if (!local->ops->set_key) {
wiphy_ext_feature_set(local->hw.wiphy,
NL80211_EXT_FEATURE_CAN_REPLACE_PTK0);
+ wiphy_ext_feature_set(local->hw.wiphy,
+ NL80211_EXT_FEATURE_EXT_KEY_ID);
+ }
/*
* Calculate scan IE length -- we need this to alloc
1) Drop IEEE80211_HW_EXT_KEY_ID_NATIVE and let drivers directly set the NL80211_EXT_FEATURE_EXT_KEY_ID flag. 2) Drop IEEE80211_HW_NO_AMPDU_KEYBORDER_SUPPORT and simply assume all drivers are unable to handle A-MPDU key borders. The new Extended Key ID API now requires all mac80211 drivers to set NL80211_EXT_FEATURE_EXT_KEY_ID when they implement set_key() and can handle Extended Key ID. For drivers not providing set_key() mac80211 itself enables Extended Key ID support, using the internal SW crypto services. Signed-off-by: Alexander Wetzel <alexander@wetzel-home.de> --- Deciding to not merge the COMPAT Extended Key ID support also invalidated the reasoning to have IEEE80211_HW_EXT_KEY_ID_NATIVE in the first place. We can simple drop the flag and ask drivers to directly set NL80211_EXT_FEATURE_EXT_KEY_ID with the current code. IEEE80211_HW_NO_AMPDU_KEYBORDER_SUPPORT was intended to tell mac80211 that the driver is not checking the keyid when aggregating frames and is only compatible with the IEEE 802.11 - 2016 standard when there are no aggregation sessions running during rekey. But reverting the logic makes more sense, the only driver able to set it for the foreseeable future is hwsim. And for hwsim it's irrelevant if we stop A-MPDU or not, the driver is never really aggregating frames. Now it probably makes sense to not yet implement AMPDU_KEYBORDER_SUPPORT and wait to see if we really have a need for that. So this patch stops A-MPDU sessions every time when we rekey with Extended Key ID and is not providing a API to the driver to prevent that. But the next patch in the series is implementing the feature, allowing you to merge it and have the API available today or simply skip it. include/net/mac80211.h | 8 -------- net/mac80211/debugfs.c | 2 -- net/mac80211/key.c | 18 ++++++++---------- net/mac80211/main.c | 18 ++++++------------ 4 files changed, 14 insertions(+), 32 deletions(-)