From 0d2c053f4204af9a7c37b6bc16f81001fed683e5 Mon Sep 17 00:00:00 2001
From: darshan <darshan.dobariya@espressif.com>
Date: Wed, 1 Nov 2023 12:50:19 +0530
Subject: [PATCH] feat(nimble): Added API to retrieve the size of the
 controller's white list

---
 nimble/host/include/host/ble_esp_gap.h |  9 +++++++++
 nimble/host/src/ble_gap.c              | 15 +++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/nimble/host/include/host/ble_esp_gap.h b/nimble/host/include/host/ble_esp_gap.h
index 53fe0fcfd..da05316ef 100644
--- a/nimble/host/include/host/ble_esp_gap.h
+++ b/nimble/host/include/host/ble_esp_gap.h
@@ -77,6 +77,15 @@ int ble_gap_wl_tx_rmv(const ble_addr_t *addrs);
  */
 int ble_gap_wl_tx_clear(void);
 
+/**
+ * Retrieves the size of the controller's white list.
+ *
+ * @param size                  On success, total size of whitelist will be stored here.
+ *
+ * @return                      0 on success; nonzero on failure.
+ */
+int ble_gap_wl_read_size(uint8_t *size);
+
 #if MYNEWT_VAL(BLE_POWER_CONTROL)
 #if MYNEWT_VAL(BLE_HCI_VS)
 
diff --git a/nimble/host/src/ble_gap.c b/nimble/host/src/ble_gap.c
index 309eca097..6e41e1d74 100644
--- a/nimble/host/src/ble_gap.c
+++ b/nimble/host/src/ble_gap.c
@@ -2501,6 +2501,21 @@ ble_gap_wl_tx_clear(void)
                                         BLE_HCI_OCF_LE_CLEAR_WHITE_LIST),
                              NULL, 0, NULL, 0 );
 }
+
+int ble_gap_wl_read_size(uint8_t *size) {
+    struct ble_hci_le_rd_white_list_rp rsp;
+    int rc;
+
+    rc = ble_hs_hci_cmd_tx(BLE_HCI_OP(BLE_HCI_OGF_LE,
+                                      BLE_HCI_OCF_LE_RD_WHITE_LIST_SIZE),
+                           NULL, 0, &rsp, sizeof(rsp));
+
+    if (rc == 0) {
+        *size = rsp.size;
+    }
+
+    return rc;
+}
 #endif
 
 int