[mynewt-nimble] 01/05: nimble/ll: Add API to retrieve address subtype

[an...@apache.org]

This is an automated email from the ASF dual-hosted git repository.

andk pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/mynewt-nimble.git

commit 6f514eefd398aa5cd3cd6d415ea7f3940c16aa14
Author: Andrzej Kaczmarek <an...@codecoup.pl>
AuthorDate: Thu Jan 2 09:29:39 2020 +0100

    nimble/ll: Add API to retrieve address subtype
    
    This adds convenience function to retrieve address (sub)type, that means
    whether address is an indentity (public/static random), RPA or NRPA.
    This allows to use single call instead of using multiple helpers in a
    row to determine address (sub)type using pretty much the same check.
---
 nimble/controller/include/controller/ble_ll.h |  6 ++++++
 nimble/controller/src/ble_ll.c                | 17 +++++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/nimble/controller/include/controller/ble_ll.h b/nimble/controller/include/controller/ble_ll.h
index b748e10..9d8c801 100644
--- a/nimble/controller/include/controller/ble_ll.h
+++ b/nimble/controller/include/controller/ble_ll.h
@@ -401,6 +401,10 @@ struct ble_dev_addr
 #define BLE_SCAN_RSP_MAX_LEN        (37)
 #define BLE_SCAN_RSP_MAX_EXT_LEN    (251)
 
+#define BLE_LL_ADDR_SUBTYPE_IDENTITY    (0)
+#define BLE_LL_ADDR_SUBTYPE_RPA         (1)
+#define BLE_LL_ADDR_SUBTYPE_NRPA        (2)
+
 /*--- External API ---*/
 /* Initialize the Link Layer */
 void ble_ll_init(void);
@@ -431,6 +435,8 @@ uint16_t ble_ll_pdu_max_tx_octets_get(uint32_t usecs, int phy_mode);
 /* Is this address a resolvable private address? */
 int ble_ll_is_rpa(const uint8_t *addr, uint8_t addr_type);
 
+int ble_ll_addr_subtype(const uint8_t *addr, uint8_t addr_type);
+
 /* Is this address an identity address? */
 int ble_ll_addr_is_id(uint8_t *addr, uint8_t addr_type);
 
diff --git a/nimble/controller/src/ble_ll.c b/nimble/controller/src/ble_ll.c
index fb430ea..9b3fd22 100644
--- a/nimble/controller/src/ble_ll.c
+++ b/nimble/controller/src/ble_ll.c
@@ -444,6 +444,23 @@ ble_ll_addr_is_id(uint8_t *addr, uint8_t addr_type)
 }
 
 int
+ble_ll_addr_subtype(const uint8_t *addr, uint8_t addr_type)
+{
+    if (!addr_type) {
+        return BLE_LL_ADDR_SUBTYPE_IDENTITY;
+    }
+
+    switch (addr[5] >> 6) {
+    case 0:
+        return BLE_LL_ADDR_SUBTYPE_NRPA; /* NRPA */
+    case 1:
+        return BLE_LL_ADDR_SUBTYPE_RPA; /* RPA */
+    default:
+        return BLE_LL_ADDR_SUBTYPE_IDENTITY; /* static random */
+    }
+}
+
+int
 ble_ll_is_valid_public_addr(const uint8_t *addr)
 {
     int i;