qcacmn: Enable PN check for 2K-jump and OOR frames

Currently the EAPOL/ARP/DHCP frames arriving as 2K-jump
or out-of-order frmaes are being delivered to the network
stack, without checking for the packet-number sequence.

WCN7850 has hardware support to provide the packet number
of the previous successful re-ordered packet from hardware.
Use this feature to check if the packet-number are in proper
sequence for these EAPOL/ARP/DHCP packets arriving as 2k-jump
or out-of-order packets before submitting it to the network
stack.

Change-Id: I1078452afce4bc00b2509436295e5bd80000feb4
CRs-Fixed: 2965086

hal/wifi3.0/hal_api.h

@@ -2773,6 +2773,25 @@ static inline void hal_reo_set_err_dst_remap(hal_soc_handle_t hal_soc_hdl)
 		hal_soc->ops->hal_reo_set_err_dst_remap(hal_soc);
 }
 
+/**
+ * hal_reo_enable_pn_in_dest() - Subscribe for previous PN for 2k-jump or
+ *			OOR error frames
+ * @hal_soc_hdl: Opaque HAL soc handle
+ *
+ * Return: true if feature is enabled,
+ *	false, otherwise.
+ */
+static inline uint8_t
+hal_reo_enable_pn_in_dest(hal_soc_handle_t hal_soc_hdl)
+{
+	struct hal_soc *hal_soc = (struct hal_soc *)hal_soc_hdl;
+
+	if (hal_soc->ops->hal_reo_enable_pn_in_dest)
+		return hal_soc->ops->hal_reo_enable_pn_in_dest(hal_soc);
+
+	return 0;
+}
+
 #ifdef GENERIC_SHADOW_REGISTER_ACCESS_ENABLE
 
 /**

hal/wifi3.0/hal_internal.h

@@ -716,6 +716,7 @@ struct hal_hw_txrx_ops {
 	qdf_iomem_t (*hal_get_window_address)(struct hal_soc *hal_soc,
 					      qdf_iomem_t addr);
 	void (*hal_reo_set_err_dst_remap)(void *hal_soc);
+	uint8_t (*hal_reo_enable_pn_in_dest)(void *hal_soc);
 	void (*hal_reo_qdesc_setup)(hal_soc_handle_t hal_soc_hdl, int tid,
 				    uint32_t ba_window_size,
 				    uint32_t start_seq, void *hw_qdesc_vaddr,
@@ -904,6 +905,7 @@ struct hal_hw_txrx_ops {
 	uint32_t (*hal_rx_tlv_mic_err_get)(uint8_t *buf);
 	uint32_t (*hal_rx_tlv_get_pkt_type)(uint8_t *buf);
 	void (*hal_rx_tlv_get_pn_num)(uint8_t *buf, uint64_t *pn_num);
+	void (*hal_rx_reo_prev_pn_get)(void *ring_desc, uint64_t *prev_pn);
 	uint8_t * (*hal_rx_pkt_hdr_get)(uint8_t *buf);
 	uint32_t (*hal_rx_msdu_reo_dst_ind_get)(hal_soc_handle_t hal_soc_hdl,
 						void *msdu_link_desc);
@@ -958,6 +960,8 @@ struct hal_hw_txrx_ops {
 					      uint8_t *priv_data,
 					      uint32_t len);
 	void (*hal_rx_tlv_msdu_len_set)(uint8_t *buf, uint32_t len);
+	void (*hal_rx_tlv_populate_mpdu_desc_info)(uint8_t *buf,
+						   void *mpdu_desc_info_hdl);
 
 	/* REO CMD and STATUS */
 	int (*hal_reo_send_cmd)(hal_soc_handle_t hal_soc_hdl,

hal/wifi3.0/hal_rx.h

@@ -251,6 +251,16 @@ enum hal_rx_mpdu_desc_flags {
 #define HAL_RX_BUF_RBM_SW5_BM(sw0_bm_id)	(sw0_bm_id + 5)
 #define HAL_RX_BUF_RBM_SW6_BM(sw0_bm_id)	(sw0_bm_id + 6)
 
+#define HAL_REO_DESTINATION_RING_MSDU_COUNT_OFFSET	0x8
+#define HAL_REO_DESTINATION_RING_MSDU_COUNT_LSB		0
+#define HAL_REO_DESTINATION_RING_MSDU_COUNT_MASK	0x000000ff
+
+#define HAL_RX_REO_DESC_MSDU_COUNT_GET(reo_desc)	\
+	(_HAL_MS((*_OFFSET_TO_WORD_PTR(reo_desc,	\
+		 HAL_REO_DESTINATION_RING_MSDU_COUNT_OFFSET)),	\
+		 HAL_REO_DESTINATION_RING_MSDU_COUNT_MASK,	\
+		 HAL_REO_DESTINATION_RING_MSDU_COUNT_LSB))
+
 #define HAL_BUFFER_ADDR_INFO_BUFFER_ADDR_31_0_OFFSET	0x0
 #define HAL_BUFFER_ADDR_INFO_BUFFER_ADDR_31_0_LSB	0
 #define HAL_BUFFER_ADDR_INFO_BUFFER_ADDR_31_0_MASK	0xffffffff
@@ -1323,6 +1333,20 @@ static inline bool hal_rx_reo_is_oor_error(uint32_t error_code)
 			true : false;
 }
 
+/**
+ * hal_rx_reo_is_bar_oor_2k_jump() - Check if the error is 2k-jump or OOR error
+ * @error_code: error code obtained from ring descriptor.
+ *
+ * Return: true, if the error code is 2k-jump or OOR
+ *	false, for other error codes.
+ */
+static inline bool hal_rx_reo_is_bar_oor_2k_jump(uint32_t error_code)
+{
+	return ((error_code == HAL_REO_ERR_BAR_FRAME_2K_JUMP) ||
+		(error_code == HAL_REO_ERR_BAR_FRAME_OOR)) ?
+		true : false;
+}
+
 /**
  * hal_dump_wbm_rel_desc() - dump wbm release descriptor
  * @hal_desc: hardware descriptor pointer
@@ -1690,6 +1714,27 @@ uint32_t hal_rx_desc_is_first_msdu(hal_soc_handle_t hal_soc_hdl,
 	return hal_soc->ops->hal_rx_desc_is_first_msdu(hw_desc_addr);
 }
 
+/**
+ * hal_rx_tlv_populate_mpdu_desc_info() - Populate mpdu_desc_info fields from
+ *					the rx tlv fields.
+ * @hal_soc_hdl: HAL SoC handle
+ * @buf: rx tlv start address [To be validated by caller]
+ * @mpdu_desc_info_hdl: Buffer where the mpdu_desc_info is to be populated.
+ *
+ * Return: None
+ */
+static inline void
+hal_rx_tlv_populate_mpdu_desc_info(hal_soc_handle_t hal_soc_hdl,
+				   uint8_t *buf,
+				   void *mpdu_desc_info_hdl)
+{
+	struct hal_soc *hal_soc = (struct hal_soc *)hal_soc_hdl;
+
+	if (hal_soc->ops->hal_rx_tlv_populate_mpdu_desc_info)
+		return hal_soc->ops->hal_rx_tlv_populate_mpdu_desc_info(buf,
+							mpdu_desc_info_hdl);
+}
+
 static inline uint32_t
 hal_rx_tlv_decap_format_get(hal_soc_handle_t hal_soc_hdl, void *hw_desc_addr)
 {
@@ -2704,6 +2749,24 @@ hal_rx_reo_buf_type_get(hal_soc_handle_t hal_soc_hdl, hal_ring_desc_t rx_desc)
 	return hal_soc->ops->hal_rx_reo_buf_type_get(rx_desc);
 }
 
+/**
+ * hal_rx_reo_prev_pn_get() - Get the previous pn from ring descriptor.
+ * @hal_soc_hdl: HAL SoC handle
+ * @ring_desc: REO ring descriptor
+ * @prev_pn: Buffer to populate the previos PN
+ *
+ * Return: None
+ */
+static inline void
+hal_rx_reo_prev_pn_get(hal_soc_handle_t hal_soc_hdl, hal_ring_desc_t ring_desc,
+		       uint64_t *prev_pn)
+{
+	struct hal_soc *hal_soc = (struct hal_soc *)hal_soc_hdl;
+
+	if (hal_soc->ops->hal_rx_reo_prev_pn_get)
+		return hal_soc->ops->hal_rx_reo_prev_pn_get(ring_desc, prev_pn);
+}
+
 /**
  * hal_rx_mpdu_info_ampdu_flag_get(): get ampdu flag bit
  * from rx mpdu info

hal/wifi3.0/wcn7850/hal_7850.c

@@ -32,6 +32,9 @@
 #include "rx_flow_search_entry.h"
 #include "hal_rx_flow_info.h"
 #include "hal_be_api.h"
+#include "reo_destination_ring_with_pn.h"
+
+#include <hal_be_rx.h>
 
 #define UNIFIED_RXPCU_PPDU_END_INFO_8_RX_PPDU_DURATION_OFFSET \
 	RXPCU_PPDU_END_INFO_RX_PPDU_DURATION_OFFSET
@@ -713,6 +716,33 @@ static void hal_rx_dump_pkt_tlvs_7850(hal_soc_handle_t hal_soc_hdl,
 	hal_rx_dump_pkt_hdr_tlv_7850(pkt_tlvs, dbg_level);
 }
 
+/**
+ * hal_rx_tlv_populate_mpdu_desc_info_7850() - Populate the local mpdu_desc_info
+ *			elements from the rx tlvs
+ * @buf: start address of rx tlvs [Validated by caller]
+ * @mpdu_desc_info_hdl: Buffer to populate the mpdu_dsc_info
+ *			[To be validated by caller]
+ *
+ * Return: None
+ */
+static void
+hal_rx_tlv_populate_mpdu_desc_info_7850(uint8_t *buf,
+					void *mpdu_desc_info_hdl)
+{
+	struct hal_rx_mpdu_desc_info *mpdu_desc_info =
+		(struct hal_rx_mpdu_desc_info *)mpdu_desc_info_hdl;
+	struct rx_pkt_tlvs *pkt_tlvs = (struct rx_pkt_tlvs *)buf;
+	struct rx_mpdu_start *mpdu_start =
+					&pkt_tlvs->mpdu_start_tlv.rx_mpdu_start;
+	struct rx_mpdu_info *mpdu_info = &mpdu_start->rx_mpdu_info_details;
+
+	mpdu_desc_info->mpdu_seq = mpdu_info->mpdu_sequence_number;
+	mpdu_desc_info->mpdu_flags = hal_rx_get_mpdu_flags((uint32_t *)
+							    mpdu_info);
+	mpdu_desc_info->peer_meta_data = mpdu_info->peer_meta_data;
+	mpdu_desc_info->bar_frame = mpdu_info->bar_frame;
+}
+
 /**
  * hal_reo_status_get_header_7850 - Process reo desc info
  * @d - Pointer to reo descriptior
@@ -999,6 +1029,20 @@ hal_reo_set_err_dst_remap_7850(void *hal_soc)
 			 REO_REG_REG_BASE)));
 }
 
+/**
+ * hal_reo_enable_pn_in_dest_7850() - Set the REO register to enable previous PN
+ *				for OOR and 2K-jump frames
+ * @hal_soc: HAL SoC handle
+ *
+ * Return: 1, since the register is set.
+ */
+static uint8_t hal_reo_enable_pn_in_dest_7850(void *hal_soc)
+{
+	HAL_REG_WRITE(hal_soc, HWIO_REO_R0_PN_IN_DEST_ADDR(REO_REG_REG_BASE),
+		      1);
+	return 1;
+}
+
 /**
  * hal_rx_flow_setup_fse_7850() - Setup a flow search entry in HW FST
  * @fst: Pointer to the Rx Flow Search Table
@@ -1223,6 +1267,24 @@ static uint8_t hal_tx_get_num_tcl_banks_7850(void)
 	return HAL_NUM_TCL_BANKS_7850;
 }
 
+/**
+ * hal_rx_reo_prev_pn_get_7850() - Get the previous PN from the REO ring desc.
+ * @ring_desc: REO ring descriptor [To be validated by caller ]
+ * @prev_pn: Buffer where the previous PN is to be populated.
+ *		[To be validated by caller]
+ *
+ * Return: None
+ */
+static void hal_rx_reo_prev_pn_get_7850(void *ring_desc,
+					uint64_t *prev_pn)
+{
+	struct reo_destination_ring_with_pn *reo_desc =
+		(struct reo_destination_ring_with_pn *)ring_desc;
+
+	*prev_pn = reo_desc->prev_pn_23_0;
+	*prev_pn |= ((uint64_t)reo_desc->prev_pn_55_24 << 24);
+}
+
 static void hal_hw_txrx_ops_attach_wcn7850(struct hal_soc *hal_soc)
 {
 	/* init and setup */
@@ -1233,6 +1295,8 @@ static void hal_hw_txrx_ops_attach_wcn7850(struct hal_soc *hal_soc)
 	hal_soc->ops->hal_get_window_address = hal_get_window_address_7850;
 	hal_soc->ops->hal_reo_set_err_dst_remap =
 						hal_reo_set_err_dst_remap_7850;
+	hal_soc->ops->hal_reo_enable_pn_in_dest =
+						hal_reo_enable_pn_in_dest_7850;
 
 	/* tx */
 	hal_soc->ops->hal_tx_set_dscp_tid_map = hal_tx_set_dscp_tid_map_7850;
@@ -1383,6 +1447,7 @@ static void hal_hw_txrx_ops_attach_wcn7850(struct hal_soc *hal_soc)
 	hal_soc->ops->hal_rx_get_fisa_timeout = hal_rx_get_fisa_timeout_be;
 	hal_soc->ops->hal_rx_mpdu_start_tlv_tag_valid =
 		hal_rx_mpdu_start_tlv_tag_valid_be;
+	hal_soc->ops->hal_rx_reo_prev_pn_get = hal_rx_reo_prev_pn_get_7850;
 
 	/* rx - TLV struct offsets */
 	hal_soc->ops->hal_rx_msdu_end_offset_get =
@@ -1439,6 +1504,8 @@ static void hal_hw_txrx_ops_attach_wcn7850(struct hal_soc *hal_soc)
 					hal_rx_mpdu_info_ampdu_flag_get_be;
 	hal_soc->ops->hal_rx_tlv_msdu_len_set =
 					hal_rx_msdu_start_msdu_len_set_be;
+	hal_soc->ops->hal_rx_tlv_populate_mpdu_desc_info =
+				hal_rx_tlv_populate_mpdu_desc_info_7850;
 };
 
 struct hal_hw_srng_config hw_srng_table_7850[] = {