qcacmn: Generate Link Specific Assoc Request for MLO

Generalize the existing link specific assoc response generation
functionality to make it common between link specific assoc request and
assoc response generation, and expose modified APIs for both. Add
handling of Non-Inheritance IEs as well as fixed field parsing to both.
Add guard checks and other fixes.

CRs-Fixed: 3083541
Change-Id: Ibf642ddc6b40ce258d50f3eeb4f820648222a758

umac/mlo_mgr/inc/utils_mlo.h

@@ -25,24 +25,74 @@
 #include "wlan_mlo_mgr_public_structs.h"
 #include <wlan_cm_ucfg_api.h>
 #include <wlan_objmgr_vdev_obj.h>
+
 #ifdef WLAN_FEATURE_11BE_MLO
 
-#define FC0_IEEE_MGMT_FRM 0x10
-#define FC1_IEEE_MGMT_FRM 0x00
-
 /**
- * util_gen_link_assoc_rsp - Generate link association response
+ * util_gen_link_assoc_req() - Generate link specific assoc request
+ * @frame: Pointer to original association request. This should not contain the
+ * 802.11 header, and must start from the fixed fields in the association
+ * request. This is required due to some caller semantics built into the end to
+ * end design.
+ * @frame_len: Length of original association request
+ * @isreassoc: Whether this is a re-association request
+ * @link_addr: Secondary link's MAC address
+ * @link_frame: Generated secondary link specific association request. Note that
+ * this will start from the 802.11 header (unlike the original association
+ * request). This should be ignored in the case of failure.
+ * @link_frame_maxsize: Maximum size of generated secondary link specific
+ * association request
+ * @link_frame_len: Pointer to location where populated length of generated
+ * secondary link specific association request should be written. This should be
+ * ignored in the case of failure.
  *
- * @frame: association response frame ptr
- * @len: length of assoc rsp frame
- * @link_addr: link mac addr
- * @new_ie: Generated Link assoc rsp
+ * Generate a link specific logically equivalent association request for the
+ * secondary link from the original association request containing a Multi-Link
+ * element. This applies to both association and re-association requests.
+ * Currently, only two link MLO is supported.
  *
- * Return: true if vdev is a link vdev, false otherwise
+ * Return: QDF_STATUS_SUCCESS in the case of success, QDF_STATUS value giving
+ * the reason for error in the case of failure.
  */
 QDF_STATUS
-util_gen_link_assoc_rsp(uint8_t *frame, qdf_size_t len,
-			struct qdf_mac_addr link_addr, uint8_t *new_ie);
+util_gen_link_assoc_req(uint8_t *frame, qdf_size_t frame_len, bool isreassoc,
+			struct qdf_mac_addr link_addr,
+			uint8_t *link_frame,
+			qdf_size_t link_frame_maxsize,
+			qdf_size_t *link_frame_len);
+
+/**
+ * util_gen_link_assoc_rsp() - Generate link specific assoc response
+ * @frame: Pointer to original association response. This should not contain the
+ * 802.11 header, and must start from the fixed fields in the association
+ * response. This is required due to some caller semantics built into the end to
+ * end design.
+ * @frame_len: Length of original association response
+ * @isreassoc: Whether this is a re-association response
+ * @link_addr: Secondary link's MAC address
+ * @link_frame: Generated secondary link specific association response. Note
+ * that this will start from the 802.11 header (unlike the original association
+ * response). This should be ignored in the case of failure.
+ * @link_frame_maxsize: Maximum size of generated secondary link specific
+ * association response
+ * @link_frame_len: Pointer to location where populated length of generated
+ * secondary link specific association response should be written. This should
+ * be ignored in the case of failure.
+ *
+ * Generate a link specific logically equivalent association response for the
+ * secondary link from the original association response containing a Multi-Link
+ * element. This applies to both association and re-association responses.
+ * Currently, only two link MLO is supported.
+ *
+ * Return: QDF_STATUS_SUCCESS in the case of success, QDF_STATUS value giving
+ * the reason for error in the case of failure.
+ */
+QDF_STATUS
+util_gen_link_assoc_rsp(uint8_t *frame, qdf_size_t frame_len, bool isreassoc,
+			struct qdf_mac_addr link_addr,
+			uint8_t *link_frame,
+			qdf_size_t link_frame_maxsize,
+			qdf_size_t *link_frame_len);
 
 /**
  * util_find_mlie - Find the first Multi-Link element or the start of the first
@@ -172,8 +222,21 @@ util_get_bvmlie_persta_partner_info(uint8_t *mlie, qdf_size_t mlielen,
 				    struct mlo_partner_info *partner_info);
 #else
 static inline QDF_STATUS
-util_gen_link_assoc_rsp(uint8_t *frame, qdf_size_t len,
-			struct qdf_mac_addr link_addr, uint8_t *new_ie)
+util_gen_link_assoc_req(uint8_t *frame, qdf_size_t frame_len, bool isreassoc,
+			struct qdf_mac_addr link_addr,
+			uint8_t *link_frame,
+			qdf_size_t link_frame_maxsize,
+			qdf_size_t *link_frame_len)
+{
+	return QDF_STATUS_E_NOSUPPORT;
+}
+
+static inline QDF_STATUS
+util_gen_link_assoc_rsp(uint8_t *frame, qdf_size_t frame_len, bool isreassoc,
+			struct qdf_mac_addr link_addr,
+			uint8_t *link_frame,
+			qdf_size_t link_frame_maxsize,
+			qdf_size_t *link_frame_len)
 {
 	return QDF_STATUS_E_NOSUPPORT;
 }