struct iwl_wowlan_all_rsc_tsc_v5 sc;
} __packed; /* WOWLAN_GTK_MATERIAL_VER_3 */
+/**
+ * enum iwl_wowlan_key_status - Status of security keys in WoWLAN notifications
+ * @IWL_WOWLAN_NOTIF_NO_KEY: No key is present; this entry should be ignored.
+ * @IWL_WOWLAN_STATUS_OLD_KEY: old key exists; no rekey occurred, and only
+ * metadata is available.
+ * @IWL_WOWLAN_STATUS_NEW_KEY: A new key was created after a rekey; new key
+ * material is available.
+ */
+enum iwl_wowlan_key_status {
+ IWL_WOWLAN_NOTIF_NO_KEY = 0,
+ IWL_WOWLAN_STATUS_OLD_KEY = 1,
+ IWL_WOWLAN_STATUS_NEW_KEY = 2
+};
+
+/**
+ * struct iwl_wowlan_gtk_status - GTK status
+ * @key: GTK material
+ * @key_len: GTK length, if set to 0, the key is not available
+ * @key_flags: information about the key:
+ * bits[0:1]: key index assigned by the AP
+ * bits[2:6]: GTK index of the key in the internal DB
+ * bit[7]: Set iff this is the currently used GTK
+ * @key_status: key status, see &enum iwl_wowlan_key_status
+ * @reserved: padding
+ * @tkip_mic_key: TKIP RX MIC key
+ * @sc: RSC/TSC counters
+ */
+struct iwl_wowlan_gtk_status {
+ u8 key[WOWLAN_KEY_MAX_SIZE];
+ u8 key_len;
+ u8 key_flags;
+ u8 key_status;
+ u8 reserved;
+ u8 tkip_mic_key[IWL_MIC_KEY_SIZE];
+ struct iwl_wowlan_all_rsc_tsc_v5 sc;
+} __packed; /* WOWLAN_GTK_MATERIAL_VER_4 */
+
#define IWL_WOWLAN_GTK_IDX_MASK (BIT(0) | BIT(1))
#define IWL_WOWLAN_IGTK_BIGTK_IDX_MASK (BIT(0))
+/**
+ * struct iwl_wowlan_igtk_status_v1 - IGTK status
+ * @key: IGTK material
+ * @ipn: the IGTK packet number (replay counter)
+ * @key_len: IGTK length, if set to 0, the key is not available
+ * @key_flags: information about the key:
+ * bits[0]: key index assigned by the AP (0: index 4, 1: index 5)
+ * (0: index 6, 1: index 7 with bigtk)
+ * bits[1:5]: IGTK index of the key in the internal DB
+ * bit[6]: Set iff this is the currently used IGTK
+ */
+struct iwl_wowlan_igtk_status_v1 {
+ u8 key[WOWLAN_KEY_MAX_SIZE];
+ u8 ipn[6];
+ u8 key_len;
+ u8 key_flags;
+} __packed; /* WOWLAN_IGTK_MATERIAL_VER_1 */
+
/**
* struct iwl_wowlan_igtk_status - IGTK status
* @key: IGTK material
* (0: index 6, 1: index 7 with bigtk)
* bits[1:5]: IGTK index of the key in the internal DB
* bit[6]: Set iff this is the currently used IGTK
+ * @key_status: key status, see &enum iwl_wowlan_key_status
+ * @reserved: padding
*/
struct iwl_wowlan_igtk_status {
u8 key[WOWLAN_KEY_MAX_SIZE];
u8 ipn[6];
u8 key_len;
u8 key_flags;
-} __packed; /* WOWLAN_IGTK_MATERIAL_VER_1 */
+ u8 key_status;
+ u8 reserved[3];
+} __packed; /* WOWLAN_IGTK_MATERIAL_VER_2 */
/**
* struct iwl_wowlan_status_v6 - WoWLAN status
*/
struct iwl_wowlan_status_v7 {
struct iwl_wowlan_gtk_status_v2 gtk[WOWLAN_GTK_KEYS_NUM];
- struct iwl_wowlan_igtk_status igtk[WOWLAN_IGTK_KEYS_NUM];
+ struct iwl_wowlan_igtk_status_v1 igtk[WOWLAN_IGTK_KEYS_NUM];
__le64 replay_ctr;
__le16 pattern_number;
__le16 non_qos_seq_ctr;
*/
struct iwl_wowlan_info_notif_v1 {
struct iwl_wowlan_gtk_status_v3 gtk[WOWLAN_GTK_KEYS_NUM];
- struct iwl_wowlan_igtk_status igtk[WOWLAN_IGTK_KEYS_NUM];
+ struct iwl_wowlan_igtk_status_v1 igtk[WOWLAN_IGTK_KEYS_NUM];
__le64 replay_ctr;
__le16 pattern_number;
__le16 reserved1;
*/
struct iwl_wowlan_info_notif_v3 {
struct iwl_wowlan_gtk_status_v3 gtk[WOWLAN_GTK_KEYS_NUM];
- struct iwl_wowlan_igtk_status igtk[WOWLAN_IGTK_KEYS_NUM];
- struct iwl_wowlan_igtk_status bigtk[WOWLAN_BIGTK_KEYS_NUM];
+ struct iwl_wowlan_igtk_status_v1 igtk[WOWLAN_IGTK_KEYS_NUM];
+ struct iwl_wowlan_igtk_status_v1 bigtk[WOWLAN_BIGTK_KEYS_NUM];
__le64 replay_ctr;
__le16 pattern_number;
__le16 reserved1;
u8 reserved2[2];
} __packed; /* WOWLAN_INFO_NTFY_API_S_VER_3 */
+/**
+ * struct iwl_wowlan_info_notif_v5 - WoWLAN information notification
+ * @gtk: GTK data
+ * @igtk: IGTK data
+ * @bigtk: BIGTK data
+ * @replay_ctr: GTK rekey replay counter
+ * @pattern_number: number of the matched patterns
+ * @qos_seq_ctr: QoS sequence counters to use next
+ * @wakeup_reasons: wakeup reasons, see &enum iwl_wowlan_wakeup_reason
+ * @num_of_gtk_rekeys: number of GTK rekeys
+ * @transmitted_ndps: number of transmitted neighbor discovery packets
+ * @received_beacons: number of received beacons
+ * @tid_tear_down: bit mask of tids whose BA sessions were closed
+ * in suspend state
+ * @station_id: station id
+ * @num_mlo_link_keys: number of &struct iwl_wowlan_mlo_gtk structs
+ * following this notif
+ * @tid_offloaded_tx: tid used by the firmware to transmit data packets
+ * while in wowlan
+ * @mlo_gtks: array of GTKs of size num_mlo_link_keys
+ */
+struct iwl_wowlan_info_notif_v5 {
+ struct iwl_wowlan_gtk_status_v3 gtk[WOWLAN_GTK_KEYS_NUM];
+ struct iwl_wowlan_igtk_status_v1 igtk[WOWLAN_IGTK_KEYS_NUM];
+ struct iwl_wowlan_igtk_status_v1 bigtk[WOWLAN_BIGTK_KEYS_NUM];
+ __le64 replay_ctr;
+ __le16 pattern_number;
+ __le16 qos_seq_ctr;
+ __le32 wakeup_reasons;
+ __le32 num_of_gtk_rekeys;
+ __le32 transmitted_ndps;
+ __le32 received_beacons;
+ u8 tid_tear_down;
+ u8 station_id;
+ u8 num_mlo_link_keys;
+ u8 tid_offloaded_tx;
+ struct iwl_wowlan_mlo_gtk mlo_gtks[];
+} __packed; /* WOWLAN_INFO_NTFY_API_S_VER_5 */
+
/**
* struct iwl_wowlan_info_notif - WoWLAN information notification
* @gtk: GTK data
* @mlo_gtks: array of GTKs of size num_mlo_link_keys
*/
struct iwl_wowlan_info_notif {
- struct iwl_wowlan_gtk_status_v3 gtk[WOWLAN_GTK_KEYS_NUM];
+ struct iwl_wowlan_gtk_status gtk[WOWLAN_GTK_KEYS_NUM];
struct iwl_wowlan_igtk_status igtk[WOWLAN_IGTK_KEYS_NUM];
struct iwl_wowlan_igtk_status bigtk[WOWLAN_BIGTK_KEYS_NUM];
__le64 replay_ctr;
u8 num_mlo_link_keys;
u8 tid_offloaded_tx;
struct iwl_wowlan_mlo_gtk mlo_gtks[];
-} __packed; /* WOWLAN_INFO_NTFY_API_S_VER_5 */
+} __packed; /* WOWLAN_INFO_NTFY_API_S_VER_6 */
/**
* struct iwl_wowlan_wake_pkt_notif - WoWLAN wake packet notification
static void
iwl_mld_convert_gtk_resume_data(struct iwl_mld *mld,
struct iwl_mld_wowlan_status *wowlan_status,
- const struct iwl_wowlan_gtk_status_v3 *gtk_data,
+ const struct iwl_wowlan_gtk_status *gtk_data,
const struct iwl_wowlan_all_rsc_tsc_v5 *sc)
{
int status_idx = 0;
for (int notif_idx = 0; notif_idx < ARRAY_SIZE(wowlan_status->gtk);
notif_idx++) {
int rsc_idx;
+ u8 key_status = gtk_data[notif_idx].key_status;
- if (!(gtk_data[notif_idx].key_len))
+ if (!key_status)
continue;
wowlan_status->gtk[status_idx].len =
wowlan_status->gtk[status_idx].id =
wowlan_status->gtk[status_idx].flags &
IWL_WOWLAN_GTK_IDX_MASK;
- memcpy(wowlan_status->gtk[status_idx].key,
- gtk_data[notif_idx].key,
- sizeof(gtk_data[notif_idx].key));
-
/* The rsc for both gtk keys are stored in gtk[0]->sc->mcast_rsc
* The gtk ids can be any two numbers between 0 and 3,
* the id_map maps between the key id and the index in sc->mcast
iwl_mld_convert_gtk_resume_seq(&wowlan_status->gtk[status_idx],
sc, rsc_idx);
- /* if it's as long as the TKIP encryption key, copy MIC key */
- if (wowlan_status->gtk[status_idx].len ==
- NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
- memcpy(wowlan_status->gtk[status_idx].key +
- NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
- gtk_data[notif_idx].tkip_mic_key,
- sizeof(gtk_data[notif_idx].tkip_mic_key));
+ if (key_status == IWL_WOWLAN_STATUS_NEW_KEY) {
+ memcpy(wowlan_status->gtk[status_idx].key,
+ gtk_data[notif_idx].key,
+ sizeof(gtk_data[notif_idx].key));
+
+ /* if it's as long as the TKIP encryption key,
+ * copy MIC key
+ */
+ if (wowlan_status->gtk[status_idx].len ==
+ NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY)
+ memcpy(wowlan_status->gtk[status_idx].key +
+ NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
+ gtk_data[notif_idx].tkip_mic_key,
+ sizeof(gtk_data[notif_idx].tkip_mic_key));
+ } else {
+ /* If the key status is WOWLAN_STATUS_OLD_KEY, it
+ * indicates that no key material is present, Set the
+ * key length to 0 as an indication
+ */
+ wowlan_status->gtk[status_idx].len = 0;
+ }
status_idx++;
}
}
iwl_mld_convert_igtk_resume_data(struct iwl_mld_wowlan_status *wowlan_status,
const struct iwl_wowlan_igtk_status *igtk)
{
- BUILD_BUG_ON(sizeof(wowlan_status->igtk.key) < sizeof(igtk->key));
-
- if (!igtk->key_len)
+ if (!igtk->key_status)
return;
+ BUILD_BUG_ON(sizeof(wowlan_status->igtk.key) < sizeof(igtk->key));
+
wowlan_status->igtk.len = igtk->key_len;
wowlan_status->igtk.flags = igtk->key_flags;
wowlan_status->igtk.id =
IWL_WOWLAN_IGTK_BIGTK_IDX_MASK) +
WOWLAN_IGTK_MIN_INDEX;
- memcpy(wowlan_status->igtk.key, igtk->key, sizeof(igtk->key));
+ if (igtk->key_status == IWL_WOWLAN_STATUS_NEW_KEY)
+ memcpy(wowlan_status->igtk.key, igtk->key, sizeof(igtk->key));
+ else
+ /* If the key status is WOWLAN_STATUS_OLD_KEY, it indicates
+ * that no key material is present. Set the key length to 0
+ * as an indication.
+ */
+ wowlan_status->igtk.len = 0;
+
iwl_mld_convert_mcast_ipn(&wowlan_status->igtk, igtk);
}
for (int notif_idx = 0; notif_idx < WOWLAN_BIGTK_KEYS_NUM;
notif_idx++) {
- if (!bigtk[notif_idx].key_len)
+ if (!bigtk[notif_idx].key_status)
continue;
wowlan_status->bigtk[status_idx].len = bigtk[notif_idx].key_len;
BUILD_BUG_ON(sizeof(wowlan_status->bigtk[status_idx].key) <
sizeof(bigtk[notif_idx].key));
- memcpy(wowlan_status->bigtk[status_idx].key,
- bigtk[notif_idx].key, sizeof(bigtk[notif_idx].key));
+ if (bigtk[notif_idx].key_status == IWL_WOWLAN_STATUS_NEW_KEY)
+ memcpy(wowlan_status->bigtk[status_idx].key,
+ bigtk[notif_idx].key,
+ sizeof(bigtk[notif_idx].key));
+ else
+ /* If the key status is WOWLAN_STATUS_OLD_KEY, it
+ * indicates that no key material is present. Set the
+ * key length to 0 as an indication.
+ */
+ wowlan_status->bigtk[status_idx].len = 0;
+
iwl_mld_convert_mcast_ipn(&wowlan_status->bigtk[status_idx],
&bigtk[notif_idx]);
status_idx++;
}
}
+static void
+iwl_mld_convert_wowlan_notif_v5(const struct iwl_wowlan_info_notif_v5 *notif_v5,
+ struct iwl_wowlan_info_notif *notif)
+{
+ /* Convert GTK from v3 to the new format */
+ BUILD_BUG_ON(ARRAY_SIZE(notif->gtk) != ARRAY_SIZE(notif_v5->gtk));
+
+ for (int i = 0; i < ARRAY_SIZE(notif_v5->gtk); i++) {
+ const struct iwl_wowlan_gtk_status_v3 *gtk_v3 = ¬if_v5->gtk[i];
+ struct iwl_wowlan_gtk_status *gtk = ¬if->gtk[i];
+
+ /* Copy key material and metadata */
+ BUILD_BUG_ON(sizeof(gtk->key) != sizeof(gtk_v3->key));
+ BUILD_BUG_ON(sizeof(gtk->tkip_mic_key) != sizeof(gtk_v3->tkip_mic_key));
+
+ memcpy(gtk->key, gtk_v3->key, sizeof(gtk_v3->key));
+
+ gtk->key_len = gtk_v3->key_len;
+ gtk->key_flags = gtk_v3->key_flags;
+
+ memcpy(gtk->tkip_mic_key, gtk_v3->tkip_mic_key,
+ sizeof(gtk_v3->tkip_mic_key));
+ gtk->sc = gtk_v3->sc;
+
+ /* Set key_status based on whether key material is present.
+ * in v5, a key is either invalid (should be skipped) or has
+ * both meta data and the key itself.
+ */
+ if (gtk_v3->key_len)
+ gtk->key_status = IWL_WOWLAN_STATUS_NEW_KEY;
+ }
+
+ /* Convert IGTK from v1 to the new format, only one IGTK is passed by FW */
+ BUILD_BUG_ON(offsetof(struct iwl_wowlan_igtk_status, key_status) !=
+ sizeof(struct iwl_wowlan_igtk_status_v1));
+
+ memcpy(¬if->igtk[0], ¬if_v5->igtk[0],
+ offsetof(struct iwl_wowlan_igtk_status, key_status));
+
+ /* Set key_status based on whether key material is present.
+ * in v5, a key is either invalid (should be skipped) or has
+ * both meta data and the key itself.
+ */
+ if (notif_v5->igtk[0].key_len)
+ notif->igtk[0].key_status = IWL_WOWLAN_STATUS_NEW_KEY;
+
+ /* Convert BIGTK from v1 to the new format */
+ BUILD_BUG_ON(ARRAY_SIZE(notif->bigtk) != ARRAY_SIZE(notif_v5->bigtk));
+
+ for (int i = 0; i < ARRAY_SIZE(notif_v5->bigtk); i++) {
+ /* Copy everything until key_status */
+ memcpy(¬if->bigtk[i], ¬if_v5->bigtk[i],
+ offsetof(struct iwl_wowlan_igtk_status, key_status));
+
+ /* Set key_status based on whether key material is present.
+ * in v5, a key is either invalid (should be skipped) or has
+ * both meta data and the key itself.
+ */
+ if (notif_v5->bigtk[i].key_len)
+ notif->bigtk[i].key_status = IWL_WOWLAN_STATUS_NEW_KEY;
+ }
+
+ notif->replay_ctr = notif_v5->replay_ctr;
+ notif->pattern_number = notif_v5->pattern_number;
+ notif->qos_seq_ctr = notif_v5->qos_seq_ctr;
+ notif->wakeup_reasons = notif_v5->wakeup_reasons;
+ notif->num_of_gtk_rekeys = notif_v5->num_of_gtk_rekeys;
+ notif->transmitted_ndps = notif_v5->transmitted_ndps;
+ notif->received_beacons = notif_v5->received_beacons;
+ notif->tid_tear_down = notif_v5->tid_tear_down;
+ notif->station_id = notif_v5->station_id;
+ notif->num_mlo_link_keys = notif_v5->num_mlo_link_keys;
+ notif->tid_offloaded_tx = notif_v5->tid_offloaded_tx;
+
+ /* Copy MLO GTK keys */
+ if (notif_v5->num_mlo_link_keys) {
+ memcpy(notif->mlo_gtks, notif_v5->mlo_gtks,
+ notif_v5->num_mlo_link_keys * sizeof(struct iwl_wowlan_mlo_gtk));
+ }
+}
+
+static bool iwl_mld_validate_wowlan_notif_size(struct iwl_mld *mld,
+ u32 len,
+ u32 expected_len,
+ u8 num_mlo_keys,
+ int version)
+{
+ u32 len_with_mlo_keys;
+
+ if (IWL_FW_CHECK(mld, len < expected_len,
+ "Invalid wowlan_info_notif v%d (expected=%u got=%u)\n",
+ version, expected_len, len))
+ return false;
+
+ len_with_mlo_keys = expected_len +
+ (num_mlo_keys * sizeof(struct iwl_wowlan_mlo_gtk));
+
+ if (IWL_FW_CHECK(mld, len < len_with_mlo_keys,
+ "Invalid wowlan_info_notif v%d with MLO keys (expected=%u got=%u)\n",
+ version, len_with_mlo_keys, len))
+ return false;
+
+ return true;
+}
+
static bool
iwl_mld_handle_wowlan_info_notif(struct iwl_mld *mld,
struct iwl_mld_wowlan_status *wowlan_status,
struct iwl_rx_packet *pkt)
{
- const struct iwl_wowlan_info_notif *notif = (void *)pkt->data;
+ const struct iwl_wowlan_info_notif *notif;
+ struct iwl_wowlan_info_notif *converted_notif __free(kfree) = NULL;
u32 len = iwl_rx_packet_payload_len(pkt);
- u32 len_with_mlo_keys;
-
- if (IWL_FW_CHECK(mld, len < sizeof(*notif),
- "Invalid wowlan_info_notif (expected=%zu got=%u)\n",
- sizeof(*notif), len))
- return true;
-
- /* Now that we know that we have at least sizeof(notif),
- * check also the variable length part
- */
- len_with_mlo_keys = sizeof(*notif) +
- notif->num_mlo_link_keys * sizeof(notif->mlo_gtks[0]);
+ int wowlan_info_ver = iwl_fw_lookup_notif_ver(mld->fw,
+ PROT_OFFLOAD_GROUP,
+ WOWLAN_INFO_NOTIFICATION,
+ IWL_FW_CMD_VER_UNKNOWN);
+
+ if (wowlan_info_ver == 5) {
+ /* v5 format - validate before conversion */
+ const struct iwl_wowlan_info_notif_v5 *notif_v5 = (void *)pkt->data;
+
+ if (!iwl_mld_validate_wowlan_notif_size(mld, len,
+ sizeof(*notif_v5),
+ notif_v5->num_mlo_link_keys,
+ 5))
+ return true;
+
+ converted_notif = kzalloc(struct_size(converted_notif,
+ mlo_gtks,
+ notif_v5->num_mlo_link_keys),
+ GFP_ATOMIC);
+ if (!converted_notif) {
+ IWL_ERR(mld,
+ "Failed to allocate memory for converted wowlan_info_notif\n");
+ return true;
+ }
- if (IWL_FW_CHECK(mld, len < len_with_mlo_keys,
- "Invalid wowlan_info_notif (expected=%ud got=%u)\n",
- len_with_mlo_keys, len))
+ iwl_mld_convert_wowlan_notif_v5(notif_v5,
+ converted_notif);
+ notif = converted_notif;
+ } else if (wowlan_info_ver == 6) {
+ notif = (void *)pkt->data;
+ if (!iwl_mld_validate_wowlan_notif_size(mld, len,
+ sizeof(*notif),
+ notif->num_mlo_link_keys,
+ 6))
+ return true;
+ } else {
+ /* smaller versions are not supported */
+ IWL_WARN(mld,
+ "Unsupported wowlan_info_notif version %d\n",
+ wowlan_info_ver);
return true;
+ }
if (IWL_FW_CHECK(mld, notif->tid_offloaded_tx != IWL_WOWLAN_OFFLOAD_TID,
"Invalid tid_offloaded_tx %d\n",
- wowlan_status->tid_offloaded_tx))
+ notif->tid_offloaded_tx))
return true;
iwl_mld_convert_gtk_resume_data(mld, wowlan_status, notif->gtk,
projects / thirdparty / linux.git / commitdiff
