diff options
| -rw-r--r-- | drivers/net/wireless/ath/ath10k/mac.c | 25 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath10k/mac.h | 4 | ||||
| -rw-r--r-- | drivers/net/wireless/ath/ath10k/wmi.c | 36 |
3 files changed, 65 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index 8d07f77..c6c09c1 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -179,6 +179,31 @@ static int ath10k_clear_peer_keys(struct ath10k_vif *arvif, return first_errno; } +bool ath10k_mac_is_peer_wep_key_set(struct ath10k *ar, const u8 *addr, + u8 keyidx) +{ + struct ath10k_peer *peer; + int i; + + lockdep_assert_held(&ar->data_lock); + + /* We don't know which vdev this peer belongs to, + * since WMI doesn't give us that information. + * + * FIXME: multi-bss needs to be handled. + */ + peer = ath10k_peer_find(ar, 0, addr); + if (!peer) + return false; + + for (i = 0; i < ARRAY_SIZE(peer->keys); i++) { + if (peer->keys[i] && peer->keys[i]->keyidx == keyidx) + return true; + } + + return false; +} + static int ath10k_clear_vdev_key(struct ath10k_vif *arvif, struct ieee80211_key_conf *key) { diff --git a/drivers/net/wireless/ath/ath10k/mac.h b/drivers/net/wireless/ath/ath10k/mac.h index 4e3c989..6829611 100644 --- a/drivers/net/wireless/ath/ath10k/mac.h +++ b/drivers/net/wireless/ath/ath10k/mac.h @@ -21,6 +21,8 @@ #include <net/mac80211.h> #include "core.h" +#define WEP_KEYID_SHIFT 6 + struct ath10k_generic_iter { struct ath10k *ar; int ret; @@ -41,6 +43,8 @@ void ath10k_mgmt_over_wmi_tx_work(struct work_struct *work); void ath10k_halt(struct ath10k *ar); void ath10k_mac_vif_beacon_free(struct ath10k_vif *arvif); void ath10k_drain_tx(struct ath10k *ar); +bool ath10k_mac_is_peer_wep_key_set(struct ath10k *ar, const u8 *addr, + u8 keyidx); static inline struct ath10k_vif *ath10k_vif_to_arvif(struct ieee80211_vif *vif) { diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c index cd1e5e5..7dd7c78 100644 --- a/drivers/net/wireless/ath/ath10k/wmi.c +++ b/drivers/net/wireless/ath/ath10k/wmi.c @@ -1113,6 +1113,40 @@ static inline u8 get_rate_idx(u32 rate, enum ieee80211_band band) return rate_idx; } +/* If keys are configured, HW decrypts all frames + * with protected bit set. Mark such frames as decrypted. + */ +static void ath10k_wmi_handle_wep_reauth(struct ath10k *ar, + struct sk_buff *skb, + struct ieee80211_rx_status *status) +{ + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; + unsigned int hdrlen; + bool peer_key; + u8 *addr, keyidx; + + if (!ieee80211_is_auth(hdr->frame_control) || + !ieee80211_has_protected(hdr->frame_control)) + return; + + hdrlen = ieee80211_hdrlen(hdr->frame_control); + if (skb->len < (hdrlen + IEEE80211_WEP_IV_LEN)) + return; + + keyidx = skb->data[hdrlen + (IEEE80211_WEP_IV_LEN - 1)] >> WEP_KEYID_SHIFT; + addr = ieee80211_get_SA(hdr); + + spin_lock_bh(&ar->data_lock); + peer_key = ath10k_mac_is_peer_wep_key_set(ar, addr, keyidx); + spin_unlock_bh(&ar->data_lock); + + if (peer_key) { + ath10k_dbg(ar, ATH10K_DBG_MAC, + "mac wep key present for peer %pM\n", addr); + status->flag |= RX_FLAG_DECRYPTED; + } +} + static int ath10k_wmi_event_mgmt_rx(struct ath10k *ar, struct sk_buff *skb) { struct wmi_mgmt_rx_event_v1 *ev_v1; @@ -1203,6 +1237,8 @@ static int ath10k_wmi_event_mgmt_rx(struct ath10k *ar, struct sk_buff *skb) hdr = (struct ieee80211_hdr *)skb->data; fc = le16_to_cpu(hdr->frame_control); + ath10k_wmi_handle_wep_reauth(ar, skb, status); + /* FW delivers WEP Shared Auth frame with Protected Bit set and * encrypted payload. However in case of PMF it delivers decrypted * frames with Protected Bit set. */ |
