*/
SCD_QUEUE_CONFIG_CMD = 0x17,
+ /**
+ * @SEC_KEY_CMD: security key command, uses &struct iwl_sec_key_cmd
+ */
+ SEC_KEY_CMD = 0x18,
+
/**
* @MONITOR_NOTIF: Datapath monitoring notification, using
* &struct iwl_datapath_monitor_notif
} __packed u; /* TX_QUEUE_CFG_CMD_OPERATION_API_U_VER_1 */
} __packed; /* TX_QUEUE_CFG_CMD_API_S_VER_3 */
+/**
+ * enum iwl_sec_key_flags - security key command key flags
+ * @IWL_SEC_KEY_FLAG_CIPHER_MASK: cipher mask
+ * @IWL_SEC_KEY_FLAG_CIPHER_WEP: WEP cipher
+ * @IWL_SEC_KEY_FLAG_CIPHER_CCMP: CCMP/CMAC cipher
+ * @IWL_SEC_KEY_FLAG_CIPHER_TKIP: TKIP cipher
+ * @IWL_SEC_KEY_FLAG_CIPHER_GCMP: GCMP/GMAC cipher
+ * @IWL_SEC_KEY_FLAG_NO_TX: don't install for TX
+ * @IWL_SEC_KEY_FLAG_KEY_SIZE: large key size (WEP-104, GCMP-256, GMAC-256)
+ * @IWL_SEC_KEY_FLAG_MFP: MFP is in used for this key
+ * @IWL_SEC_KEY_FLAG_MCAST_KEY: this is a multicast key
+ * @IWL_SEC_KEY_FLAG_SPP_AMSDU: SPP A-MSDU should be used
+ */
+enum iwl_sec_key_flags {
+ IWL_SEC_KEY_FLAG_CIPHER_MASK = 0x07,
+ IWL_SEC_KEY_FLAG_CIPHER_WEP = 0x01,
+ IWL_SEC_KEY_FLAG_CIPHER_CCMP = 0x02,
+ IWL_SEC_KEY_FLAG_CIPHER_TKIP = 0x03,
+ IWL_SEC_KEY_FLAG_CIPHER_GCMP = 0x05,
+ IWL_SEC_KEY_FLAG_NO_TX = 0x08,
+ IWL_SEC_KEY_FLAG_KEY_SIZE = 0x10,
+ IWL_SEC_KEY_FLAG_MFP = 0x20,
+ IWL_SEC_KEY_FLAG_MCAST_KEY = 0x40,
+ IWL_SEC_KEY_FLAG_SPP_AMSDU = 0x80,
+};
+
+#define IWL_SEC_WEP_KEY_OFFSET 3
+
+/**
+ * struct iwl_sec_key_cmd - security key command
+ * @action: action from &enum iwl_ctxt_action
+ * @u.add.sta_mask: station mask for the new key
+ * @u.add.key_id: key ID (0-7) for the new key
+ * @u.add.key_flags: key flags per &enum iwl_sec_key_flags
+ * @u.add.key: key material. WEP keys should start from &IWL_SEC_WEP_KEY_OFFSET.
+ * @u.add.tkip_mic_rx_key: TKIP MIC RX key
+ * @u.add.tkip_mic_tx_key: TKIP MIC TX key
+ * @u.add.rx_seq: RX sequence counter value
+ * @u.add.tx_seq: TX sequence counter value
+ * @u.modify.old_sta_mask: old station mask
+ * @u.modify.new_sta_mask: new station mask
+ * @u.modify.key_id: key ID
+ * @u.modify.key_flags: new key flags
+ * @u.remove.sta_mask: station mask
+ * @u.remove.key_id: key ID
+ * @u.remove.key_flags: key flags
+ */
+struct iwl_sec_key_cmd {
+ __le32 action;
+ union {
+ struct {
+ __le32 sta_mask;
+ __le32 key_id;
+ __le32 key_flags;
+ u8 key[32];
+ u8 tkip_mic_rx_key[8];
+ u8 tkip_mic_tx_key[8];
+ __le64 rx_seq;
+ __le64 tx_seq;
+ } __packed add; /* SEC_KEY_ADD_CMD_API_S_VER_1 */
+ struct {
+ __le32 old_sta_mask;
+ __le32 new_sta_mask;
+ __le32 key_id;
+ __le32 key_flags;
+ } __packed modify; /* SEC_KEY_MODIFY_CMD_API_S_VER_1 */
+ struct {
+ __le32 sta_mask;
+ __le32 key_id;
+ __le32 key_flags;
+ } __packed remove; /* SEC_KEY_REMOVE_CMD_API_S_VER_1 */
+ } __packed u; /* SEC_KEY_OPERATION_API_U_VER_1 */
+} __packed; /* SEC_KEY_CMD_API_S_VER_1 */
+
#endif /* __iwl_fw_api_datapath_h__ */
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/*
+ * Copyright (C) 2022 Intel Corporation
+ */
+#include <linux/kernel.h>
+#include <net/mac80211.h>
+#include "mvm.h"
+#include "fw/api/context.h"
+#include "fw/api/datapath.h"
+
+static u32 iwl_mvm_get_sec_sta_mask(struct iwl_mvm *mvm,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta,
+ struct ieee80211_key_conf *keyconf)
+{
+ struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+
+ if (vif->type == NL80211_IFTYPE_AP &&
+ !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE))
+ return BIT(mvmvif->mcast_sta.sta_id);
+
+ if (sta) {
+ struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
+
+ return BIT(mvmsta->sta_id);
+ }
+
+ if (vif->type == NL80211_IFTYPE_STATION &&
+ mvmvif->ap_sta_id != IWL_MVM_INVALID_STA)
+ return BIT(mvmvif->ap_sta_id);
+
+ /* invalid */
+ return 0;
+}
+
+static u32 iwl_mvm_get_sec_flags(struct iwl_mvm *mvm,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta,
+ struct ieee80211_key_conf *keyconf)
+{
+ struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+ u32 flags = 0;
+
+ if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE))
+ flags |= IWL_SEC_KEY_FLAG_MCAST_KEY;
+
+ switch (keyconf->cipher) {
+ case WLAN_CIPHER_SUITE_WEP104:
+ flags |= IWL_SEC_KEY_FLAG_KEY_SIZE;
+ fallthrough;
+ case WLAN_CIPHER_SUITE_WEP40:
+ flags |= IWL_SEC_KEY_FLAG_CIPHER_WEP;
+ break;
+ case WLAN_CIPHER_SUITE_TKIP:
+ flags |= IWL_SEC_KEY_FLAG_CIPHER_TKIP;
+ break;
+ case WLAN_CIPHER_SUITE_AES_CMAC:
+ case WLAN_CIPHER_SUITE_CCMP:
+ flags |= IWL_SEC_KEY_FLAG_CIPHER_CCMP;
+ break;
+ case WLAN_CIPHER_SUITE_GCMP_256:
+ case WLAN_CIPHER_SUITE_BIP_GMAC_256:
+ flags |= IWL_SEC_KEY_FLAG_KEY_SIZE;
+ fallthrough;
+ case WLAN_CIPHER_SUITE_GCMP:
+ case WLAN_CIPHER_SUITE_BIP_GMAC_128:
+ flags |= IWL_SEC_KEY_FLAG_CIPHER_GCMP;
+ break;
+ }
+
+ rcu_read_lock();
+ if (!sta && vif->type == NL80211_IFTYPE_STATION &&
+ mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
+ u8 sta_id = mvmvif->ap_sta_id;
+
+ sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id],
+ lockdep_is_held(&mvm->mutex));
+ }
+
+ if (!IS_ERR_OR_NULL(sta) && sta->mfp)
+ flags |= IWL_SEC_KEY_FLAG_MFP;
+ rcu_read_unlock();
+
+ return flags;
+}
+
+static int __iwl_mvm_sec_key_del(struct iwl_mvm *mvm, u32 sta_mask,
+ u32 key_flags, u32 keyidx, u32 flags)
+{
+ u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, SEC_KEY_CMD);
+ struct iwl_sec_key_cmd cmd = {
+ .action = cpu_to_le32(FW_CTXT_ACTION_REMOVE),
+ .u.remove.sta_mask = cpu_to_le32(sta_mask),
+ .u.remove.key_id = cpu_to_le32(keyidx),
+ .u.remove.key_flags = cpu_to_le32(key_flags),
+ };
+
+ return iwl_mvm_send_cmd_pdu(mvm, cmd_id, flags, sizeof(cmd), &cmd);
+}
+
+int iwl_mvm_sec_key_add(struct iwl_mvm *mvm,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta,
+ struct ieee80211_key_conf *keyconf)
+{
+ u32 sta_mask = iwl_mvm_get_sec_sta_mask(mvm, vif, sta, keyconf);
+ u32 key_flags = iwl_mvm_get_sec_flags(mvm, vif, sta, keyconf);
+ u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, SEC_KEY_CMD);
+ struct iwl_sec_key_cmd cmd = {
+ .action = cpu_to_le32(FW_CTXT_ACTION_ADD),
+ .u.add.sta_mask = cpu_to_le32(sta_mask),
+ .u.add.key_id = cpu_to_le32(keyconf->keyidx),
+ .u.add.key_flags = cpu_to_le32(key_flags),
+ .u.add.tx_seq = cpu_to_le64(atomic64_read(&keyconf->tx_pn)),
+ };
+ int ret;
+
+ if (WARN_ON(keyconf->keylen > sizeof(cmd.u.add.key)))
+ return -EINVAL;
+
+ if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
+ keyconf->cipher == WLAN_CIPHER_SUITE_WEP104)
+ memcpy(cmd.u.add.key + IWL_SEC_WEP_KEY_OFFSET, keyconf->key,
+ keyconf->keylen);
+ else
+ memcpy(cmd.u.add.key, keyconf->key, keyconf->keylen);
+
+ if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) {
+ memcpy(cmd.u.add.tkip_mic_rx_key,
+ keyconf->key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
+ 8);
+ memcpy(cmd.u.add.tkip_mic_tx_key,
+ keyconf->key + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY,
+ 8);
+ }
+
+ ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0, sizeof(cmd), &cmd);
+ if (ret)
+ return ret;
+
+ /*
+ * For WEP, the same key is used for multicast and unicast so need to
+ * upload it again. If this fails, remove the original as well.
+ */
+ if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
+ keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) {
+ cmd.u.add.key_flags ^= cpu_to_le32(IWL_SEC_KEY_FLAG_MCAST_KEY);
+ ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0, sizeof(cmd), &cmd);
+ if (ret)
+ __iwl_mvm_sec_key_del(mvm, sta_mask, key_flags,
+ keyconf->keyidx, 0);
+ }
+
+ return ret;
+}
+
+static int _iwl_mvm_sec_key_del(struct iwl_mvm *mvm,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta,
+ struct ieee80211_key_conf *keyconf,
+ u32 flags)
+{
+ u32 sta_mask = iwl_mvm_get_sec_sta_mask(mvm, vif, sta, keyconf);
+ u32 key_flags = iwl_mvm_get_sec_flags(mvm, vif, sta, keyconf);
+ int ret;
+
+ ret = __iwl_mvm_sec_key_del(mvm, sta_mask, key_flags, keyconf->keyidx,
+ flags);
+ if (ret)
+ return ret;
+
+ /* For WEP, delete the key again as unicast */
+ if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||
+ keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) {
+ key_flags ^= IWL_SEC_KEY_FLAG_MCAST_KEY;
+ ret = __iwl_mvm_sec_key_del(mvm, sta_mask, key_flags,
+ keyconf->keyidx, flags);
+ }
+
+ return ret;
+}
+
+int iwl_mvm_sec_key_del(struct iwl_mvm *mvm,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta,
+ struct ieee80211_key_conf *keyconf)
+{
+ return _iwl_mvm_sec_key_del(mvm, vif, sta, keyconf, 0);
+}
+
+static void iwl_mvm_sec_key_remove_ap_iter(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta,
+ struct ieee80211_key_conf *key,
+ void *data)
+{
+ struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
+
+ if (key->hw_key_idx == STA_KEY_IDX_INVALID)
+ return;
+
+ if (sta)
+ return;
+
+ _iwl_mvm_sec_key_del(mvm, vif, NULL, key, CMD_ASYNC);
+ key->hw_key_idx = STA_KEY_IDX_INVALID;
+}
+
+void iwl_mvm_sec_key_remove_ap(struct iwl_mvm *mvm,
+ struct ieee80211_vif *vif)
+{
+ struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+ u32 sec_key_id = WIDE_ID(DATA_PATH_GROUP, SEC_KEY_CMD);
+ u8 sec_key_ver = iwl_fw_lookup_cmd_ver(mvm->fw, sec_key_id, 0);
+
+ if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
+ mvmvif->ap_sta_id == IWL_MVM_INVALID_STA))
+ return;
+
+ if (!sec_key_ver)
+ return;
+
+ ieee80211_iter_keys_rcu(mvm->hw, vif,
+ iwl_mvm_sec_key_remove_ap_iter,
+ NULL);
+}
projects / users / hch / xfs.git / commitdiff