Recent commit 'mac80211: Encrypt "Group addressed privacy" action frames'
encrypts group privacy action frames. But qca99x0 family chipset delivers
broadcast/multicast management frames as encrypted and it should be
decrypted by mac80211. Setting RX_FLAG_DECRYPTED stats for those frames
is breaking mesh connection establishment.
Signed-off-by: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath10k/core.c | 4 ++++
drivers/net/wireless/ath/ath10k/core.h | 5 +++++
drivers/net/wireless/ath/ath10k/wmi.c | 30 +++++++++++++++++++++++++-----
3 files changed, 34 insertions(+), 5 deletions(-)
diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c
index 0ca58cf0ffea..c4d1a5ba216e 100644
--- a/drivers/net/wireless/ath/ath10k/core.c
+++ b/drivers/net/wireless/ath/ath10k/core.c
@@ -182,6 +182,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = {
.board_size = QCA99X0_BOARD_DATA_SZ,
.board_ext_size = QCA99X0_BOARD_EXT_DATA_SZ,
},
+ .sw_decrypt_mcast_mgmt = true,
},
{
.id = QCA9984_HW_1_0_DEV_VERSION,
@@ -205,6 +206,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = {
.board_size = QCA99X0_BOARD_DATA_SZ,
.board_ext_size = QCA99X0_BOARD_EXT_DATA_SZ,
},
+ .sw_decrypt_mcast_mgmt = true,
},
{
.id = QCA9888_HW_2_0_DEV_VERSION,
@@ -227,6 +229,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = {
.board_size = QCA99X0_BOARD_DATA_SZ,
.board_ext_size = QCA99X0_BOARD_EXT_DATA_SZ,
},
+ .sw_decrypt_mcast_mgmt = true,
},
{
.id = QCA9377_HW_1_0_DEV_VERSION,
@@ -285,6 +288,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = {
.board_size = QCA4019_BOARD_DATA_SZ,
.board_ext_size = QCA4019_BOARD_EXT_DATA_SZ,
},
+ .sw_decrypt_mcast_mgmt = true,
},
};
diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h
index f36c2b274ee5..7254bd3e7c82 100644
--- a/drivers/net/wireless/ath/ath10k/core.h
+++ b/drivers/net/wireless/ath/ath10k/core.h
@@ -765,6 +765,11 @@ struct ath10k {
size_t board_size;
size_t board_ext_size;
} fw;
+
+ /* qca99x0 family chips deliver broadcast/multicast management
+ * frames encrypted and expect software do decryption.
+ */
+ bool sw_decrypt_mcast_mgmt;
} hw_params;
/* contains the firmware images used with ATH10K_FIRMWARE_MODE_NORMAL */
diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c
index 169cd2e783eb..bced8ac7ed94 100644
--- a/drivers/net/wireless/ath/ath10k/wmi.c
+++ b/drivers/net/wireless/ath/ath10k/wmi.c
@@ -2240,6 +2240,30 @@ static int ath10k_wmi_10_4_op_pull_mgmt_rx_ev(struct ath10k *ar,
return 0;
}
+static bool ath10k_wmi_rx_is_decrypted(struct ath10k *ar,
+ struct ieee80211_hdr *hdr)
+{
+ if (!ieee80211_has_protected(hdr->frame_control))
+ return false;
+
+ /* 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.
+ */
+ if (ieee80211_is_auth(hdr->frame_control))
+ return false;
+
+ /* qca99x0 based FW delivers broadcast or multicast management frames
+ * (ex: group privacy action frames in mesh) as encrypted payload.
+ */
+ if ((is_broadcast_ether_addr(ieee80211_get_DA(hdr)) ||
+ is_multicast_ether_addr(ieee80211_get_DA(hdr))) &&
+ ar->hw_params.sw_decrypt_mcast_mgmt)
+ return false;
+
+ return true;
+}
+
int ath10k_wmi_event_mgmt_rx(struct ath10k *ar, struct sk_buff *skb)
{
struct wmi_mgmt_rx_ev_arg arg = {};
@@ -2326,11 +2350,7 @@ int ath10k_wmi_event_mgmt_rx(struct ath10k *ar, struct sk_buff *skb)
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. */
- if (ieee80211_has_protected(hdr->frame_control) &&
- !ieee80211_is_auth(hdr->frame_control)) {
+ if (ath10k_wmi_rx_is_decrypted(ar, hdr)) {
status->flag |= RX_FLAG_DECRYPTED;
if (!ieee80211_is_action(hdr->frame_control) &&
--
2.9.2
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