nrf_wifi: Incorporating changes for raw packet transmission

This set of changes brings in support for raw packet transmission

Signed-off-by: Vivekananda Uppunda <vivekananda.uppunda@nordicsemi.no>

nrf_wifi/fw_if/umac_if/inc/default/fmac_api.h

@@ -986,6 +986,60 @@ enum nrf_wifi_status nrf_wifi_fmac_set_listen_interval(void *fmac_dev_ctx,
 enum nrf_wifi_status nrf_wifi_fmac_set_ps_wakeup_mode(void *fmac_dev_ctx,
 							unsigned char if_idx,
 							bool ps_wakeup_mode);
+
+#ifdef CONFIG_NRF700X_RAW_DATA_TX
+/**
+ * @brief Transmit a raw unaltered frame to the RPU.
+ * @param dev_ctx Pointer to the UMAC IF context for a RPU WLAN device.
+ * @param if_idx Index of the interface on which the frame is to be
+ *               transmitted.
+ * @param net_packet Pointer to the OS specific network buffer.
+ *
+ * This function takes care of transmitting a frame to the RPU firmware.
+ * It does the following:
+ *
+ *     - Queues the frames to a transmit queue.
+ *     - Based on token availability, sends one or more frames to the RPU using
+ *       the command for transmission.
+ *     - The firmware sends an event once the command has
+ *       been processed to indicate whether the frame has been
+ *       transmitted/aborted.
+ *     - The driver cleans up the frame buffer(s) after receiving this event.
+ *
+ *@retval      WIFI_NRF_STATUS_SUCCESS On success
+ *@retval      WIFI_NRF_STATUS_FAIL On failure
+ */
+enum nrf_wifi_status nrf_wifi_fmac_start_rawpkt_xmit(void *dev_ctx,
+						     unsigned char if_idx,
+						     void *net_packet);
+
+/**
+ * @brief Check if raw packet transmission mode is enabled or not.
+ * @param vif Pointer to the virtual interface context.
+ *
+ * This function checks if raw packet transmission mode is enabled or not. If
+ * raw packet transmission mode is enabled, the packet will be allowed to be
+ * transmitted. If the mode is disabled, the packet will be silently dropped.
+ *
+ *@retval      WIFI_NRF_STATUS_SUCCESS On success
+ *@retval      WIFI_NRF_STATUS_FAIL On failure
+ */
+bool nrf_wifi_util_is_rawpktmode_enabled(struct nrf_wifi_fmac_vif_ctx *vif);
+
+/**
+ * @brief Check if a valid mode is being set.
+ * @param mode The mode value attempted to be configured.
+ *
+ * This function checks the mode value attempted to be configured
+ * is a valid mode as supported by the driver. If the mode is valid,
+ * the mode will be configured to the lower layers, else an error value
+ * will be flagged.
+ *
+ *@retval      WIFI_NRF_STATUS_SUCCESS On success
+ *@retval      WIFI_NRF_STATUS_FAIL On failure
+ */
+enum nrf_wifi_status nrf_wifi_check_mode_validity(unsigned char mode);
+#endif /* CONFIG_NRF700X_RAW_DATA_TX */
 /**
  * @}
  */

nrf_wifi/fw_if/umac_if/inc/default/fmac_structs.h

@@ -25,6 +25,7 @@
 #define MAX_PEERS 5
 #define MAX_SW_PEERS (MAX_PEERS + 1)
 #define NRF_WIFI_AC_TWT_PRIORITY_EMERGENCY 0xFF
+#define NRF_WIFI_MAGIC_NUM_RAWTX 0x12345678
 
 
 /**
@@ -356,6 +357,51 @@ struct nrf_wifi_fmac_priv_def {
 #endif /* CONFIG_NRF700X_STA_MODE */
 };
 
+#ifdef CONFIG_NRF700X_RAW_DATA_TX
+
+/**
+ * @brief Transmit modes for raw packets.
+ *
+ */
+enum nrf_wifi_fmac_mode {
+	/** Legacy mode. */
+	NRF_WIFI_FMAC_RAWTX_MODE_LEGACY,
+	/** HT mode. */
+	NRF_WIFI_FMAC_RAWTX_MODE_HT,
+	/** VHT mode. */
+	NRF_WIFI_FMAC_RAWTX_MODE_VHT,
+	/** HE SU mode. */
+	NRF_WIFI_FMAC_RAWTX_MODE_HE_SU,
+	/** HE ER SU mode. */
+	NRF_WIFI_FMAC_RAWTX_MODE_HE_ER_SU,
+	/** HE TB mode. */
+	NRF_WIFI_FMAC_RAWTX_MODE_HE_TB,
+	/** Throughput max. */
+	NRF_WIFI_FMAC_RAWTX_MODE_MAX
+};
+
+/**
+ * @brief Structure to hold raw tx packet information.
+ *
+ * This structure holds the information sent by higher
+ * layers to transmit a raw frame.
+ */
+struct raw_tx_pkt_header {
+	/** magic number to identify a raw packet. */
+	unsigned int magic_num;
+	/** Data rate at which packet is to be transmitted. */
+	unsigned char data_rate;
+	/** Packet length. */
+	unsigned short packet_length;
+	/** Mode describing if packet is VHT, HT, HE or Legacy @ref nrf_wifi_fmac_mode. */
+	unsigned char tx_mode;
+	/** Wi-Fi access category mapping for packet @ref nrf_wifi_fmac_ac. */
+	unsigned char queue;
+	/** Flag indicating raw packet transmission. */
+	unsigned char raw_tx_flag;
+};
+#endif /* CONFIG_NRF700X_RAW_DATA_TX */
+
 /**
  * @brief Structure to hold per device context information for the UMAC IF layer.
  *
@@ -391,6 +437,9 @@ struct nrf_wifi_fmac_dev_ctx_def {
 	void *tx_done_tasklet;
 #endif /* CONFIG_NRF700X_TX_DONE_WQ_ENABLED */
 #endif /* CONFIG_NRF700X_STA_MODE */
+#ifdef CONFIG_NRF700X_RAW_DATA_TX
+	struct raw_tx_pkt_header raw_tx_config;
+#endif /* CONFIG_NRF700X_RAW_DATA_TX */
 };
 
 /**
@@ -414,14 +463,12 @@ struct nrf_wifi_fmac_vif_ctx {
 	int if_type;
 	/** BSSID of the AP to which this VIF is connected (applicable only in STA mode). */
 	unsigned char bssid[NRF_WIFI_ETH_ADDR_LEN];
-#ifdef CONFIG_NRF700X_RAWDATA_TX
-	/** packet filter setting for the VIF */
-	unsigned char packet_filter;
-	/** mode setting for the current VIF */
+#ifdef CONFIG_NRF700X_RAW_DATA_TX
+	/** Mode setting for the current VIF */
 	unsigned char mode;
-	/** channel setting for the current VIF */
+	/** Channel setting for the current VIF */
 	unsigned char channel;
-#endif /* CONFIG_NRF700X_RAWDATA_TX */
+#endif /* CONFIG_NRF700X_RAW_DATA_TX */
 };
 
 /**

nrf_wifi/fw_if/umac_if/inc/fmac_api_common.h

@@ -241,53 +241,56 @@ enum nrf_wifi_status nrf_wifi_fmac_get_reg(struct nrf_wifi_fmac_dev_ctx *fmac_de
 enum nrf_wifi_status nrf_wifi_fmac_get_power_save_info(void *fmac_dev_ctx,
 						       unsigned char if_idx);
 
-#ifdef CONFIG_NRF700X_RAWDATA_TX
+#ifdef CONFIG_NRF700X_RAW_DATA_TX
 /**
- * @brief Get or set the current mode of operation
+ * @brief Set the current mode of operation
  * @param dev_ctx Pointer to the UMAC IF context for a RPU WLAN device.
  * @param if_idx Index of the interface on which mode is to be set.
- * @param mode value to be set for the interface.
+ * @param mode Value to be set for the interface.
  *
  * This function is used to send a command
- *         to RPU to Set/Get mode of operation
+ *         to RPU to set mode of operation
  *
- * @return Command execution status
+ * @retval      WIFI_NRF_STATUS_SUCCESS On success
+ * @retval      WIFI_NRF_STATUS_FAIL On failure
  */
 enum nrf_wifi_status nrf_wifi_fmac_mode(void *dev_ctx,
 					unsigned char if_idx,
 					unsigned char mode);
 
 /**
- * @brief Get or set the current channel
+ * @brief Set the current channel
  * @param dev_ctx Pointer to the UMAC IF context for a RPU WLAN device.
  * @param if_idx Index of the interface on which mode is to be set.
- * @param channel value to be set for the interface.
+ * @param channel Value to be set for the interface.
  *
  * This function is used to send a command
- *         to RPU to Set/Get current channel of operation
+ *         to RPU to set current channel of operation
  *
- * @return Command execution status
+ * @retval      WIFI_NRF_STATUS_SUCCESS On success
+ * @retval      WIFI_NRF_STATUS_FAIL On failure
  */
 enum nrf_wifi_status nrf_wifi_fmac_channel(void *dev_ctx,
 					   unsigned char if_idx,
 					   unsigned int channel);
 
 /**
- * @brief Get or set the current channel
+ * @brief Set the packet filter settings
  * @param dev_ctx Pointer to the UMAC IF context for a RPU WLAN device.
  * @param filter value to be set for the interface.
  * @param if_idx Index of the interface on which mode is to be set.
- * @param buffer_size size of packet capture length.
+ * @param buffer_size Size of packet capture length.
  *
  * This function is used to send a command
- *         to RPU to Set/Get current channel of operation
+ *         to RPU to set current packet filter settings
  *
- * @return Command execution status
+ * @retval      WIFI_NRF_STATUS_SUCCESS On success
+ * @retval      WIFI_NRF_STATUS_FAIL On failure
  */
 enum nrf_wifi_status nrf_wifi_fmac_packet_filter(void *dev_ctx, unsigned char filter,
 						 unsigned char if_idx,
 						 unsigned short buffer_size);
-#endif
+#endif /* CONFIG_NRF700X_RAW_DATA_TX */
 /**
  * @}
  */

nrf_wifi/fw_if/umac_if/inc/fmac_tx.h

@@ -44,6 +44,14 @@ struct tx_pkt_info {
 	unsigned int peer_id;
 };
 
+#ifdef CONFIG_NRF700X_RAW_DATA_TX
+struct tx_cmd_prep_raw_info {
+	struct nrf_wifi_fmac_dev_ctx *fmac_dev_ctx;
+	struct nrf_wifi_cmd_raw_tx *raw_config;
+	unsigned char num_tx_pkts;
+};
+#endif /* CONFIG_NRF700X_RAW_DATA_TX */
+
 struct tx_cmd_prep_info {
 	struct nrf_wifi_fmac_dev_ctx *fmac_dev_ctx;
 	struct nrf_wifi_tx_buff *config;
@@ -56,6 +64,12 @@ void tx_deinit(struct nrf_wifi_fmac_dev_ctx *fmac_dev_ctx);
 enum nrf_wifi_status nrf_wifi_fmac_tx_done_event_process(struct nrf_wifi_fmac_dev_ctx *fmac_dev_ctx,
 							 struct nrf_wifi_tx_buff_done *config);
 
+#ifdef CONFIG_NRF700X_RAW_DATA_TX
+enum nrf_wifi_status
+	nrf_wifi_fmac_rawtx_done_event_process(struct nrf_wifi_fmac_dev_ctx *fmac_dev_ctx,
+					       struct nrf_wifi_event_raw_tx_done *config);
+#endif /* CONFIG_NRF700X_RAW_DATA_TX */
+
 unsigned int tx_desc_get(struct nrf_wifi_fmac_dev_ctx *fmac_dev_ctx,
 			 int queue);
 

nrf_wifi/fw_if/umac_if/inc/fmac_util.h

@@ -134,11 +134,11 @@ bool nrf_wifi_util_is_arr_zero(unsigned char *arr,
 
 #endif /* !CONFIG_NRF700X_RADIO_TEST */
 
-#ifdef CONFIG_NRF700X_RAWDATA_TX
+#ifdef CONFIG_NRF700X_RAW_DATA_TX
 bool nrf_wifi_util_is_rawpktmode_enabled(struct nrf_wifi_fmac_vif_ctx *vif);
 
 enum nrf_wifi_status nrf_wifi_check_mode_validity(unsigned char mode);
-#endif
+#endif /* CONFIG_NRF700X_RAW_DATA_TX */
 
 void *wifi_fmac_priv(struct nrf_wifi_fmac_priv *def);
 void *wifi_dev_priv(struct nrf_wifi_fmac_dev_ctx *def);

nrf_wifi/fw_if/umac_if/src/default/fmac_api.c

@@ -2013,6 +2013,9 @@ unsigned char nrf_wifi_fmac_add_vif(void *dev_ctx,
 	vif_ctx->fmac_dev_ctx = fmac_dev_ctx;
 	vif_ctx->os_vif_ctx = os_vif_ctx;
 	vif_ctx->if_type = vif_info->iftype;
+#ifdef CONFIG_NRF700X_RAW_DATA_TX
+	vif_ctx->mode = NRF_WIFI_STA_MODE;
+#endif /* CONFIG_NRF700X_RAW_DATA_TX */
 
 	nrf_wifi_osal_mem_cpy(fmac_dev_ctx->fpriv->opriv,
 			      vif_ctx->mac_addr,

nrf_wifi/fw_if/umac_if/src/event.c

@@ -852,12 +852,11 @@ static enum nrf_wifi_status umac_process_sys_events(struct nrf_wifi_fmac_dev_ctx
 {
 	enum nrf_wifi_status status = NRF_WIFI_STATUS_FAIL;
 	unsigned char *sys_head = NULL;
-	struct nrf_wifi_fmac_dev_ctx_def *def_dev_ctx;
 #ifdef CONFIG_NRF700X_RADIO_TEST
 	struct nrf_wifi_fmac_dev_ctx_rt *def_dev_ctx_rt;
 	struct nrf_wifi_umac_event_err_status *umac_status;
-
-	def_dev_ctx = wifi_dev_priv(fmac_dev_ctx);
+#else
+	struct nrf_wifi_fmac_dev_ctx_def *def_dev_ctx;
 #endif /* CONFIG_NRF700X_RADIO_TEST */
 
 	if (!fmac_dev_ctx || !rpu_msg) {
@@ -866,9 +865,9 @@ static enum nrf_wifi_status umac_process_sys_events(struct nrf_wifi_fmac_dev_ctx
 
 #ifdef CONFIG_NRF700X_RADIO_TEST
 	def_dev_ctx_rt = wifi_dev_priv(fmac_dev_ctx);
-#endif
+#else
 	def_dev_ctx = wifi_dev_priv(fmac_dev_ctx);
-
+#endif
 	sys_head = (unsigned char *)rpu_msg->msg;
 
 	switch (((struct nrf_wifi_sys_head *)sys_head)->cmd_event) {
@@ -896,9 +895,14 @@ static enum nrf_wifi_status umac_process_sys_events(struct nrf_wifi_fmac_dev_ctx
 		status = NRF_WIFI_STATUS_SUCCESS;
 		break;
 #endif /* CONFIG_NRF700X_RADIO_TEST */
-#ifdef CONFIG_NRF700X_RAWDATA_TX
+#ifdef CONFIG_NRF700X_RAW_DATA_TX
+	case NRF_WIFI_EVENT_RAW_TX_DONE:
+		status = nrf_wifi_fmac_rawtx_done_event_process(fmac_dev_ctx,
+						(struct nrf_wifi_event_raw_tx_done *)sys_head);
+		break;
 	case NRF_WIFI_EVENT_MODE_SET_DONE:
 		struct nrf_wifi_event_raw_config_mode *mode_event;
+
 		mode_event = (struct nrf_wifi_event_raw_config_mode *)sys_head;
 		if (!mode_event->status) {
 			def_dev_ctx->vif_ctx[mode_event->if_index]->mode =
@@ -923,6 +927,7 @@ static enum nrf_wifi_status umac_process_sys_events(struct nrf_wifi_fmac_dev_ctx
 		break;
 	case NRF_WIFI_EVENT_CHANNEL_SET_DONE:
 		struct nrf_wifi_event_set_channel *channel_event;
+
 		channel_event = (struct nrf_wifi_event_set_channel *)sys_head;
 		if (!channel_event->status) {
 			def_dev_ctx->vif_ctx[channel_event->if_index]->channel =
@@ -932,22 +937,22 @@ static enum nrf_wifi_status umac_process_sys_events(struct nrf_wifi_fmac_dev_ctx
 		break;
 	case NRF_WIFI_EVENT_FILTER_SET_DONE:
 		struct nrf_wifi_event_raw_config_filter *filter_event;
+
 		filter_event = (struct nrf_wifi_event_raw_config_filter *)sys_head;
 		if (!filter_event->status) {
 			def_dev_ctx->vif_ctx[filter_event->if_index]->packet_filter =
 								filter_event->filter;
 		}
 		status = NRF_WIFI_STATUS_SUCCESS;
 		break;
-#endif /* CONFIG_NRF700X_RAWDATA_TX */
+#endif /* CONFIG_NRF700X_RAW_DATA_TX */
 	default:
 		nrf_wifi_osal_log_err(fmac_dev_ctx->fpriv->opriv,
 				      "%s: Unknown event recd: %d\n",
 				      __func__,
 				      ((struct nrf_wifi_sys_head *)sys_head)->cmd_event);
 		break;
 	}
-
 	return status;
 }
 

nrf_wifi/fw_if/umac_if/src/fmac_api_common.c

@@ -923,7 +923,7 @@ enum nrf_wifi_status nrf_wifi_fmac_get_host_rpu_ps_ctrl_state(void *dev_ctx,
 #endif /* CONFIG_NRF_WIFI_LOW_POWER */
 #endif /* CONFIG_NRF700X_UTIL */
 
-#ifdef CONFIG_NRF700X_RAWDATA_TX
+#ifdef CONFIG_NRF700X_RAW_DATA_TX
 enum nrf_wifi_status nrf_wifi_fmac_mode(void *dev_ctx,
 					unsigned char if_idx,
 					unsigned char mode)
@@ -1059,4 +1059,4 @@ enum nrf_wifi_status nrf_wifi_fmac_packet_filter(void *dev_ctx, unsigned char fi
 out:
 	return status;
 }
-#endif /* CONFIG_NRF700X_RAWDATA_TX */
+#endif /* CONFIG_NRF700X_RAW_DATA_TX */

nrf_wifi/fw_if/umac_if/src/fmac_util.c

@@ -323,7 +323,11 @@ unsigned char *nrf_wifi_util_get_dest(struct nrf_wifi_fmac_dev_ctx *fmac_dev_ctx
 unsigned char *nrf_wifi_util_get_ra(struct nrf_wifi_fmac_vif_ctx *vif,
 				    void *nwb)
 {
-	if (vif->if_type == NRF_WIFI_IFTYPE_STATION) {
+	if ((vif->if_type == NRF_WIFI_IFTYPE_STATION)
+#ifdef CONFIG_NRF700X_RAW_DATA_TX
+	    || (vif->if_type == NRF_WIFI_STA_TX_INJECTOR)
+#endif /* CONFIG_NRF700X_RAW_DATA_TX */
+	    ) {
 		return vif->bssid;
 	}
 
@@ -341,7 +345,7 @@ unsigned char *nrf_wifi_util_get_src(struct nrf_wifi_fmac_dev_ctx *fmac_dev_ctx,
 
 #endif /* CONFIG_NRF700X_STA_MODE */
 
-#ifdef CONFIG_NRF700X_RAWDATA_TX
+#ifdef CONFIG_NRF700X_RAW_DATA_TX
 enum nrf_wifi_status nrf_wifi_check_mode_validity(unsigned char mode)
 {
 	/**
@@ -364,7 +368,7 @@ bool nrf_wifi_util_is_rawpktmode_enabled(struct nrf_wifi_fmac_vif_ctx *vif)
 	}
 	return false;
 }
-#endif /* CONFIG_NRF700X_RAWDATA_TX */
+#endif /* CONFIG_NRF700X_RAW_DATA_TX */
 
 bool nrf_wifi_util_is_arr_zero(unsigned char *arr,
 			       unsigned int arr_sz)