diff options
| author | Ahmad Masri <amasri@codeaurora.org> | 2019-09-10 15:46:26 +0200 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2019-09-12 17:06:42 +0200 |
| commit | 42fe1e519e9f1c6f554c0183f8c9cdd92036cbbf (patch) | |
| tree | 8e929db398c9a034fb2f90dbed543cc4c88b74e7 /drivers/net/wireless/ath/wil6210/wil6210.h | |
| parent | wil6210: add debugfs to show PMC ring content (diff) | |
| download | linux-42fe1e519e9f1c6f554c0183f8c9cdd92036cbbf.tar.xz linux-42fe1e519e9f1c6f554c0183f8c9cdd92036cbbf.zip | |
wil6210: fix PTK re-key race
Fix a race between cfg80211 add_key call and transmitting of 4/4 EAP
packet. In case the transmit is delayed until after the add key takes
place, message 4/4 will be encrypted with the new key, and the
receiver side (AP) will drop it due to MIC error.
Wil6210 will monitor and look for the transmitted packet 4/4 eap key.
In case add_key takes place before the transmission completed, then
wil6210 will let the FW store the key and wil6210 will notify the FW
to use the PTK key only after 4/4 eap packet transmission was
completed.
Signed-off-by: Ahmad Masri <amasri@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/ath/wil6210/wil6210.h')
| -rw-r--r-- | drivers/net/wireless/ath/wil6210/wil6210.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/wil6210/wil6210.h b/drivers/net/wireless/ath/wil6210/wil6210.h index ecda3ca2c64b..0783c7963621 100644 --- a/drivers/net/wireless/ath/wil6210/wil6210.h +++ b/drivers/net/wireless/ath/wil6210/wil6210.h @@ -731,6 +731,12 @@ enum wil_sta_status { wil_sta_connected = 2, }; +enum wil_rekey_state { + WIL_REKEY_IDLE = 0, + WIL_REKEY_M3_RECEIVED = 1, + WIL_REKEY_WAIT_M4_SENT = 2, +}; + /** * struct wil_sta_info - data for peer * @@ -879,6 +885,10 @@ struct wil6210_vif { int net_queue_stopped; /* netif_tx_stop_all_queues invoked */ bool fw_stats_ready; /* per-cid statistics are ready inside sta_info */ u64 fw_stats_tsf; /* measurement timestamp */ + + /* PTK rekey race prevention, this is relevant to station mode only */ + enum wil_rekey_state ptk_rekey_state; + struct work_struct enable_tx_key_worker; }; /** @@ -979,6 +989,7 @@ struct wil6210_priv { */ spinlock_t wmi_ev_lock; spinlock_t net_queue_lock; /* guarding stop/wake netif queue */ + spinlock_t eap_lock; /* guarding access to eap rekey fields */ struct napi_struct napi_rx; struct napi_struct napi_tx; struct net_device napi_ndev; /* dummy net_device serving all VIFs */ @@ -1226,6 +1237,7 @@ int __wil_down(struct wil6210_priv *wil); void wil_refresh_fw_capabilities(struct wil6210_priv *wil); void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r); int wil_find_cid(struct wil6210_priv *wil, u8 mid, const u8 *mac); +int wil_find_cid_by_idx(struct wil6210_priv *wil, u8 mid, int idx); void wil_set_ethtoolops(struct net_device *ndev); struct fw_map *wil_find_fw_mapping(const char *section); @@ -1351,6 +1363,7 @@ void wil6210_disconnect_complete(struct wil6210_vif *vif, const u8 *bssid, void wil_probe_client_flush(struct wil6210_vif *vif); void wil_probe_client_worker(struct work_struct *work); void wil_disconnect_worker(struct work_struct *work); +void wil_enable_tx_key_worker(struct work_struct *work); void wil_init_txrx_ops(struct wil6210_priv *wil); @@ -1367,6 +1380,8 @@ void wil_update_net_queues_bh(struct wil6210_priv *wil, struct wil6210_vif *vif, struct wil_ring *ring, bool check_stop); netdev_tx_t wil_start_xmit(struct sk_buff *skb, struct net_device *ndev); int wil_tx_complete(struct wil6210_vif *vif, int ringid); +void wil_tx_complete_handle_eapol(struct wil6210_vif *vif, + struct sk_buff *skb); void wil6210_unmask_irq_tx(struct wil6210_priv *wil); void wil6210_unmask_irq_tx_edma(struct wil6210_priv *wil); |