add 802.11 decapsulation offload support

index ce80773..5959058 100644
@@ -1251,6 +1251,9 @@ ieee80211_tx_info_clear_status(struct ieee80211_tx_info *info)
  *	the "0-length PSDU" field included there.  The value for it is
  *	in &struct ieee80211_rx_status.  Note that if this value isn't
  *	known the frame shouldn't be reported.
+ * @RX_FLAG_80211_MCAST: If the receiver address (addr1) in the frame is
+ *	multicast. This is used with the data frames by the drivers
+ *	supporting 802.11 hdr decap offload.
  */
 enum mac80211_rx_flags {
 	RX_FLAG_MMIC_ERROR		= BIT(0),

@@ -1283,6 +1286,7 @@ enum mac80211_rx_flags {
 	RX_FLAG_RADIOTAP_HE_MU		= BIT(27),
 	RX_FLAG_RADIOTAP_LSIG		= BIT(28),
 	RX_FLAG_NO_PSDU			= BIT(29),
+	RX_FLAG_80211_MCAST		= BIT(30),
 };
 
 /**

@@ -4402,6 +4406,22 @@ static inline void ieee80211_rx_ni(struct ieee80211_hw *hw,
 }
 
 /**
+ * ieee80211_rx_decap_offl - Receive frames in 802.11 decapsulated format
+ *
+ * Low level driver capable of 802.11 header decap uses this function. The frame
+ * will be in ethernet format.
+ * This function may not be called in IRQ context. Calls to this function
+ * for a single hardware must be synchronized against each other.
+ *
+ * @hw: the hardware this frame came in on
+ * @sta : the station the frame was received from, must not be %NULL
+ * @skb: the buffer to receive, owned by mac80211 after this call
+ * @napi: the NAPI context
+ */
+void ieee80211_rx_decap_offl(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
+			     struct sk_buff *skb, struct napi_struct *napi);
+
+/**
  * ieee80211_sta_ps_transition - PS transition for connected sta
  *
  * When operating in AP mode with the %IEEE80211_HW_AP_LINK_PS

241 lines not on this page · raw message

index 6a30601..c9f784a 100644
@@ -17,6 +17,10 @@ unsigned int ath11k_debug_mask;
 module_param_named(debug_mask, ath11k_debug_mask, uint, 0644);
 MODULE_PARM_DESC(debug_mask, "Debugging mask");
 
+unsigned int ath11k_ethernet_mode;
+module_param_named(ethernet_mode, ath11k_ethernet_mode, uint, 0644);
+MODULE_PARM_DESC(ethernet_mode, "Use ethernet frame datapath 0: disable, 1: enable");
+
 static const struct ath11k_hw_params ath11k_hw_params = {
 	.name = "ipq8074",
 	.fw = {

index ce8f7fe..d3d9590 100644
@@ -71,6 +71,7 @@ struct ath11k_skb_rxcb {
 	bool is_first_msdu;
 	bool is_last_msdu;
 	bool is_continuation;
+	bool is_mcbc;
 	struct hal_rx_desc *rx_desc;
 	u8 err_rel_src;
 	u8 err_code;

@@ -78,6 +79,8 @@ struct ath11k_skb_rxcb {
 	u8 unmapped;
 	u8 is_frag;
 	u8 tid;
+	u16 peer_id;
+	u16 seq_no;
 };
 
 enum ath11k_hw_rev {

325 lines not on this page · raw message

index 5e20038..99ca4a3 100644
@@ -494,6 +494,8 @@ struct hal_tlv_hdr {
 #define RX_MPDU_DESC_INFO0_DA_IDX_TIMEOUT	BIT(29)
 #define RX_MPDU_DESC_INFO0_RAW_MPDU		BIT(30)
 
+#define RX_MPDU_DESC_META_DATA_PEER_ID		GENMASK(15, 0)
+
 struct rx_mpdu_desc {
 	u32 info0; /* %RX_MPDU_DESC_INFO */
 	u32 meta_data;

index 7f29b4d..3c7e4a9 100644
@@ -15,6 +15,8 @@
 #include "testmode.h"
 #include "peer.h"
 
+extern unsigned int ath11k_ethernet_mode;
+
 #define CHAN2G(_channel, _freq, _flags) { \
 	.band                   = NL80211_BAND_2GHZ, \
 	.hw_value               = (_channel), \

@@ -4202,6 +4204,25 @@ static int ath11k_mac_op_add_interface(struct ieee80211_hw *hw,
 		goto err_vdev_del;
 	}
 
+	/* Do not enable ethernet mode for mesh vifs, packets in mesh network
+	 * can be forwarded to other mesh nodes and mac80211 expects the packet
+	 * in 802.11 format. Also, please note that ethernet mode shall not be
+	 * used on interface where 4addr mode is enabled as we might not have
+	 * 4addr related config during add_interface().
+	 */
+	if (ath11k_ethernet_mode && vif->type != NL80211_IFTYPE_MESH_POINT) {
+		param_id = WMI_VDEV_PARAM_RX_DECAP_TYPE;
+		param_value = ATH11K_HW_TXRX_ETHERNET;
+
+		ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
+						    param_id, param_value);
+		if (ret) {
+			ath11k_warn(ab, "failed to set vdev %d tx encap mode: %d\n",
+				    arvif->vdev_id, ret);
+			goto err_vdev_del;
+		}
+	}
+
 	nss = get_num_chains(ar->cfg_tx_chainmask) ? : 1;
 	ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
 					    WMI_VDEV_PARAM_NSS, nss);