qcacmn: Define T2LM structure in wlan_mlo_peer_context structure

T2LM negotiation happens per MLD level. Hence, define the T2LM related structure in wlan_mlo_peer_context. Add API to get the protected EHT action frame subtype. Change-Id: Ia3870fbb38b8d673f96954af18078c96d20365f3 CRs-Fixed: 3167178
2022-04-19 10:54:58 +05:30
--- a/umac/cmn_services/cmn_defs/inc/wlan_cmn_ieee80211.h
+++ b/umac/cmn_services/cmn_defs/inc/wlan_cmn_ieee80211.h
@@ -596,6 +596,7 @@ enum element_ie {
 * @WLAN_EXTN_ELEMID_EHTOP: EHT Operation IE
 * @WLAN_EXTN_ELEMID_MULTI_LINK: Multi-Link IE
 * @WLAN_EXTN_ELEMID_EHTCAP: EHT Capabilities IE
+ * @WLAN_EXTN_ELEMID_T2LM: TID-to-link mapping IE
 */
 enum extn_element_ie {
 	WLAN_EXTN_ELEMID_HECAP       = 35,
@@ -615,6 +616,7 @@ enum extn_element_ie {
 #ifdef WLAN_FEATURE_11BE
 	WLAN_EXTN_ELEMID_EHTCAP      = 108,
 #endif
+	WLAN_EXTN_ELEMID_T2LM        = 109,
 };

 /**
@@ -2201,6 +2203,42 @@ struct wlan_ml_bv_linfo_perstaprof_stainfo_dtiminfo {
 #endif /* WLAN_FEATURE_11BE_MLO */
 #endif /* WLAN_FEATURE_11BE */

+#ifdef WLAN_FEATURE_T2LM
+/**
+ * struct wlan_ie_tid_to_link_mapping - TID-to-link mapping IE
+ * @elem_id: T2LM IE
+ * @elem_len: T2LM IE len
+ * @elem_id_extn: T2LM extension id
+ * @data: Variable length data described below
+ */
+struct wlan_ie_tid_to_link_mapping {
+	uint8_t elem_id;
+	uint8_t elem_len;
+	uint8_t elem_id_extn;
+	uint8_t data[];
+} qdf_packed;
+
+/* The variable length data in wlan_ie_tid_to_link_mapping structure has the
+ * following fields.
+ * - TID-to-link mapping control ( 1 octet)
+ * - Link mapping presence indicator (0 or 1 octet)
+ * - Link mapping of TID 0(optional) to TID 7(optional). Each field has 0 or 2
+ *   octets.
+ */
+
+/* Definitions related TID-to-link mapping control*/
+/* Direction */
+#define WLAN_T2LM_CONTROL_DIRECTION_IDX                         0
+#define WLAN_T2LM_CONTROL_DIRECTION_BITS                        2
+/* Default link mapping */
+#define WLAN_T2LM_CONTROL_DEFAULT_LINK_MAPPING_IDX              2
+#define WLAN_T2LM_CONTROL_DEFAULT_LINK_MAPPING_BITS             1
+/* Bit3 to Bit7 are reserved*/
+/* Link mapping presence indicator */
+#define WLAN_T2LM_CONTROL_LINK_MAPPING_PRESENCE_INDICATOR_IDX   8
+#define WLAN_T2LM_CONTROL_LINK_MAPPING_PRESENCE_INDICATOR_BITS  8
+#endif /* WLAN_FEATURE_T2LM */
+
 /**
 * struct he_oper_6g_param: 6 Ghz params for HE
 * @primary_channel: HE 6GHz Primary channel number
--- a/umac/cmn_services/mgmt_txrx/dispatcher/inc/wlan_mgmt_txrx_utils_api.h
+++ b/umac/cmn_services/mgmt_txrx/dispatcher/inc/wlan_mgmt_txrx_utils_api.h
@@ -125,6 +125,7 @@ enum mgmt_subtype {
 * @ACTION_CATEGORY_CDMG: CDMG Action frame
 * @ACTION_CATEGORY_CMMG: CMMG Action frame
 * @ACTION_CATEGORY_GLK: GLK Action frame
+ * @ACTION_CATEGORY_PROTECTED_EHT: Protected EHT Action frame
 * @ACTION_CATEGORY_VENDOR_SPECIFIC_PROTECTED: vendor specific protected
 *                                             action category
 * @ACTION_CATEGORY_VENDOR_SPECIFIC: vendor specific action category
@@ -160,6 +161,7 @@ enum mgmt_action_category {
 	ACTION_CATEGORY_CDMG = 27,
 	ACTION_CATEGORY_CMMG = 28,
 	ACTION_CATEGORY_GLK = 29,
+	ACTION_CATEGORY_PROTECTED_EHT = 37,
 	ACTION_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
 	ACTION_CATEGORY_VENDOR_SPECIFIC = 127,
 };
@@ -500,6 +502,18 @@ enum twt_actioncode {
 	TWT_INFORMATION = 11,
 };

+/**
+ * enum eht_actioncode - Protected EHT action frames
+ * @EHT_T2LM_REQUEST: T2LM request action frame
+ * @EHT_T2LM_RESPONSE: T2LM response action frame
+ * @EHT_T2LM_TEARDOWN: T2LM teardown action frame
+ */
+enum eht_actioncode {
+	EHT_T2LM_REQUEST = 0,
+	EHT_T2LM_RESPONSE = 1,
+	EHT_T2LM_TEARDOWN = 2,
+};
+
 /**
 * struct action_frm_hdr - action frame header
 * @action_category: action category
@@ -635,6 +649,9 @@ struct action_frm_hdr {
 * @MGMT_ACTION_TWT_SETUP: TWT setup frame
 * @MGMT_ACTION_TWT_TEARDOWN: TWT teardown frame
 * @MGMT_ACTION_TWT_INFORMATION: TWT information frame
+ * @MGMT_ACTION_EHT_T2LM_REQUEST: T2LM request frame
+ * @MGMT_ACTION_EHT_T2LM_RESPONSE: T2LM response frame
+ * @MGMT_ACTION_EHT_T2LM_TEARDOWN: T2LM teardown frame
 * @MGMT_MAX_FRAME_TYPE:         max. mgmt frame types
 */
 enum mgmt_frame_type {
@@ -764,6 +781,9 @@ enum mgmt_frame_type {
 	MGMT_ACTION_TWT_SETUP,
 	MGMT_ACTION_TWT_TEARDOWN,
 	MGMT_ACTION_TWT_INFORMATION,
+	MGMT_ACTION_EHT_T2LM_REQUEST,
+	MGMT_ACTION_EHT_T2LM_RESPONSE,
+	MGMT_ACTION_EHT_T2LM_TEARDOWN,
 	MGMT_MAX_FRAME_TYPE,
 };

--- a/umac/cmn_services/mgmt_txrx/dispatcher/src/wlan_mgmt_txrx_tgt_api.c
+++ b/umac/cmn_services/mgmt_txrx/dispatcher/src/wlan_mgmt_txrx_tgt_api.c
@@ -791,6 +791,45 @@ mgmt_get_twt_action_subtype(uint8_t action_code)
 	return frm_type;
 }

+#ifdef WLAN_FEATURE_11BE
+/**
+ * mgmt_get_protected_eht_action_subtype() - gets protected EHT action subtype
+ * @action_code: action code
+ *
+ * This function returns the subtype for protected EHT action category.
+ *
+ * Return: mgmt frame type
+ */
+static enum mgmt_frame_type
+mgmt_get_protected_eht_action_subtype(uint8_t action_code)
+{
+	enum mgmt_frame_type frm_type;
+
+	switch (action_code) {
+	case EHT_T2LM_REQUEST:
+		frm_type = MGMT_ACTION_EHT_T2LM_REQUEST;
+		break;
+	case EHT_T2LM_RESPONSE:
+		frm_type = MGMT_ACTION_EHT_T2LM_RESPONSE;
+		break;
+	case EHT_T2LM_TEARDOWN:
+		frm_type = MGMT_ACTION_EHT_T2LM_TEARDOWN;
+		break;
+	default:
+		frm_type = MGMT_FRM_UNSPECIFIED;
+		break;
+	}
+
+	return frm_type;
+}
+#else
+static enum mgmt_frame_type
+mgmt_get_protected_eht_action_subtype(uint8_t action_code)
+{
+	return MGMT_FRM_UNSPECIFIED;
+}
+#endif /* WLAN_FEATURE_11BE */
+
 /**
 * mgmt_txrx_get_action_frm_subtype() - gets action frm subtype
 * @mpdu_data_ptr: pointer to mpdu data
@@ -881,6 +920,10 @@ mgmt_txrx_get_action_frm_subtype(uint8_t *mpdu_data_ptr)
 		frm_type =
 			mgmt_get_twt_action_subtype(action_hdr->action_code);
 		break;
+	case ACTION_CATEGORY_PROTECTED_EHT:
+		frm_type = mgmt_get_protected_eht_action_subtype(
+				action_hdr->action_code);
+		break;
 	default:
 		frm_type = MGMT_FRM_UNSPECIFIED;
 		break;
--- a/umac/mlo_mgr/inc/wlan_mlo_mgr_public_structs.h
+++ b/umac/mlo_mgr/inc/wlan_mlo_mgr_public_structs.h
@@ -383,6 +383,166 @@ struct mlpeer_auth_params {
 	void *rs;
 };

+#ifdef WLAN_FEATURE_T2LM
+
+/**
+ * enum wlan_t2lm_direction - Indicates the direction for which TID-to-link
+ * mapping is available.
+ * @WLAN_T2LM_DL_DIRECTION: Downlink
+ * @WLAN_T2LM_UL_DIRECTION: Uplink
+ * @WLAN_T2LM_BIDI_DIRECTION: Both downlink and uplink
+ * @WLAN_T2LM_MAX_DIRECTION: Max direction, this is used only internally
+ * @WLAN_T2LM_INVALID_DIRECTION: Invalid, this is used only internally to check
+ * if the mapping present in wlan_t2lm_of_tids structure is valid or not.
+ */
+enum wlan_t2lm_direction {
+	WLAN_T2LM_DL_DIRECTION,
+	WLAN_T2LM_UL_DIRECTION,
+	WLAN_T2LM_BIDI_DIRECTION,
+	WLAN_T2LM_MAX_DIRECTION,
+	WLAN_T2LM_INVALID_DIRECTION,
+};
+
+/* Total 8 TIDs are supported, TID 0 to TID 7 */
+#define T2LM_MAX_NUM_TIDS 8
+
+/**
+ * enum wlan_t2lm_category - T2LM category
+ *
+ * @WLAN_T2LM_CATEGORY_NONE: none
+ * @WLAN_T2LM_CATEGORY_REQUEST: T2LM request
+ * @WLAN_T2LM_CATEGORY_RESPONSE: T2LM response
+ * @WLAN_T2LM_CATEGORY_TEARDOWN: T2LM teardown
+ * @WLAN_T2LM_CATEGORY_INVALID: Invalid
+ */
+enum wlan_t2lm_category {
+	WLAN_T2LM_CATEGORY_NONE = 0,
+	WLAN_T2LM_CATEGORY_REQUEST = 1,
+	WLAN_T2LM_CATEGORY_RESPONSE = 2,
+	WLAN_T2LM_CATEGORY_TEARDOWN = 3,
+	WLAN_T2LM_CATEGORY_INVALID,
+};
+
+/**
+ * enum wlan_t2lm_tx_status - Status code applicable for the T2LM frames
+ * transmitted by the current peer.
+ *
+ * @WLAN_T2LM_TX_STATUS_NONE: Status code is not applicable
+ * @WLAN_T2LM_TX_STATUS_SUCCESS: AP/STA successfully transmitted the T2LM frame
+ * @WLAN_T2LM_TX_STATUS_FAILURE: Tx failure received from the FW.
+ * @WLAN_T2LM_TX_STATUS_RX_TIMEOUT: T2LM response frame not received from the
+ *                              peer for the transmitted T2LM request frame.
+ * @WLAN_T2LM_TX_STATUS_INVALID: Invalid status code
+ */
+enum wlan_t2lm_tx_status {
+	WLAN_T2LM_TX_STATUS_NONE = 0,
+	WLAN_T2LM_TX_STATUS_SUCCESS = 1,
+	WLAN_T2LM_TX_STATUS_FAILURE = 2,
+	WLAN_T2LM_TX_STATUS_RX_TIMEOUT = 3,
+	WLAN_T2LM_TX_STATUS_INVALID,
+};
+
+/**
+ * enum wlan_t2lm_resp_frm_type - T2LM status corresponds to T2LM response frame
+ *
+ * @WLAN_T2LM_RESP_TYPE_SUCCESS: T2LM mapping provided in the T2LM request is
+ *                       accepted either by the AP or STA
+ * @WLAN_T2LM_RESP_TYPE_DENIED_TID_TO_LINK_MAPPING: T2LM Request denied because
+ *                       the requested TID-to-link mapping is unacceptable.
+ * @WLAN_T2LM_RESP_TYPE_PREFERRED_TID_TO_LINK_MAPPING: T2LM Request rejected and
+ *                       preferred TID-to-link mapping is suggested.
+ * @WLAN_T2LM_RESP_TYPE_INVALID: Status code is not applicable.
+ */
+enum wlan_t2lm_resp_frm_type {
+	WLAN_T2LM_RESP_TYPE_SUCCESS = 0,
+	WLAN_T2LM_RESP_TYPE_DENIED_TID_TO_LINK_MAPPING = 133,
+	WLAN_T2LM_RESP_TYPE_PREFERRED_TID_TO_LINK_MAPPING = 134,
+	WLAN_T2LM_RESP_TYPE_INVALID,
+};
+
+/**
+ * enum wlan_t2lm_enable - TID-to-link negotiation supported by the mlo peer
+ *
+ * @WLAN_T2LM_NOT_SUPPORTED: T2LM is not supported by the MLD
+ * @WLAN_MAP_EACH_TID_TO_SAME_OR_DIFFERENET_LINK_SET: MLD supports the mapping
+ *             of each TID to the same or different link set (Disjoint mapping).
+ * @WLAN_MAP_ALL_TIDS_TO_SAME_LINK_SET: MLD only supports the mapping of all
+ *             TIDs to the same link set.
+ * @WLAN_T2LM_ENABLE_INVALID: invalid
+ */
+enum wlan_t2lm_enable {
+	WLAN_T2LM_NOT_SUPPORTED = 0,
+	WLAN_MAP_EACH_TID_TO_SAME_OR_DIFFERENET_LINK_SET = 1,
+	WLAN_MAP_ALL_TIDS_TO_SAME_LINK_SET = 2,
+	WLAN_T2LM_ENABLE_INVALID,
+};
+
+/**
+ * struct wlan_t2lm_of_tids - TID-to-Link mapping information for the frames
+ * transmitted on the uplink, downlink and bidirectional.
+ *
+ * @is_homogeneous_mapping: The t2lm_provisioned_links is homogeneous mapping
+ * @direction:  0 - Downlink, 1 - uplink 2 - Both uplink and downlink
+ * @default_link_mapping: value 1 indicates the default T2LM, where all the TIDs
+ *                        are mapped to all the links.
+ *                        value 0 indicates the preferred T2LM mapping
+ * @t2lm_provisioned_links: Indicates TID to link mapping of all the TIDS.
+ */
+struct wlan_t2lm_of_tids {
+	bool is_homogeneous_mapping;
+	enum wlan_t2lm_direction direction;
+	bool default_link_mapping;
+	uint16_t t2lm_provisioned_links[T2LM_MAX_NUM_TIDS];
+};
+
+/**
+ * struct wlan_prev_t2lm_negotiated_info - Previous successful T2LM negotiation
+ * is saved here.
+ *
+ * @dialog_token: Save the dialog token used in T2LM request and response frame.
+ * @t2lm_info: Provides the TID to LINK mapping information
+ */
+struct wlan_prev_t2lm_negotiated_info {
+	uint16_t dialog_token;
+	struct wlan_t2lm_of_tids t2lm_info[WLAN_T2LM_MAX_DIRECTION];
+};
+
+/**
+ * struct wlan_t2lm_onging_negotiation_info - Current ongoing T2LM negotiation
+ * (information about transmitted T2LM request/response frame)
+ *
+ * @category: T2LM category as T2LM request frame
+ * @dialog_token: Save the dialog token used in T2LM request and response frame.
+ * @t2lm_info: Provides the TID-to-link mapping info for UL/DL/BiDi
+ * @t2lm_tx_status: Status code corresponds to the transmitted T2LM frames
+ * @t2lm_resp_type: T2LM status corresponds to T2LM response frame.
+ */
+struct wlan_t2lm_onging_negotiation_info {
+	enum wlan_t2lm_category category;
+	uint8_t dialog_token;
+	struct wlan_t2lm_of_tids t2lm_info[WLAN_T2LM_MAX_DIRECTION];
+	enum wlan_t2lm_tx_status t2lm_tx_status;
+	enum wlan_t2lm_resp_frm_type t2lm_resp_type;
+};
+
+/**
+ * struct wlan_mlo_peer_t2lm_policy - TID-to-link mapping information
+ *
+ * @self_gen_dialog_token: self generated dialog token used to send T2LM request
+ *                         frame;
+ * @t2lm_enable_val: TID-to-link enable value supported by this peer.
+ * @t2lm_negotiated_info: Previous successful T2LM negotiation is saved here.
+ * @ongoing_tid_to_link_mapping: This has the ongoing TID-to-link mapping info
+ *                               transmitted by this peer to the connected peer.
+ */
+struct wlan_mlo_peer_t2lm_policy {
+	uint8_t self_gen_dialog_token;
+	enum wlan_t2lm_enable t2lm_enable_val;
+	struct wlan_prev_t2lm_negotiated_info t2lm_negotiated_info;
+	struct wlan_t2lm_onging_negotiation_info ongoing_tid_to_link_mapping;
+};
+#endif /* WLAN_FEATURE_T2LM */
+
 /*
 * struct wlan_mlo_peer_context - MLO peer context
 *
@@ -402,6 +562,7 @@ struct mlpeer_auth_params {
 * @is_nawds_ml_peer: flag to indicate if ml_peer is NAWDS configured
 * @nawds_config: eack link peer's NAWDS configuration
 * @pending_auth: Holds pending auth request
+ * @t2lm_policy: TID-to-link mapping information
 */
 struct wlan_mlo_peer_context {
 	qdf_list_node_t peer_node;
@@ -429,6 +590,9 @@ struct wlan_mlo_peer_context {
 #ifdef UMAC_MLO_AUTH_DEFER
 	struct mlpeer_auth_params *pending_auth[MAX_MLO_LINK_PEERS];
 #endif
+#ifdef WLAN_FEATURE_T2LM
+	struct wlan_mlo_peer_t2lm_policy t2lm_policy;
+#endif
 };

 /*