[mynewt-nimble] branch master updated: controller: use OS specific PRNG for RIOT builds

[ha...@apache.org]

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

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


The following commit(s) were added to refs/heads/master by this push:
     new 80b6f20f controller: use OS specific PRNG for RIOT builds
80b6f20f is described below

commit 80b6f20f988e3cd0a076031fafc456724d62904b
Author: Hauke Petersen <ha...@fu-berlin.de>
AuthorDate: Tue Jun 7 15:03:28 2022 +0200

    controller: use OS specific PRNG for RIOT builds
    
    Currently the controller is using jrand48() to generate pseudo
    random numbers. For RIOT builds this commit switches to the RIOT
    build-in PRNG API, as this has two benefits: i) it saves 500bytes
    of flash and ii) jrand48() internally uses malloc, which has been
    source to runtime failures in the past.
---
 nimble/controller/src/ble_ll_rand.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/nimble/controller/src/ble_ll_rand.c b/nimble/controller/src/ble_ll_rand.c
index 06e5d12b..fc7febcf 100644
--- a/nimble/controller/src/ble_ll_rand.c
+++ b/nimble/controller/src/ble_ll_rand.c
@@ -33,6 +33,10 @@
 #include "trng/trng.h"
 #endif
 
+#ifdef RIOT_VERSION
+#include "random.h"
+#endif
+
 #if BABBLESIM
 extern void tm_tick(void);
 #endif
@@ -134,6 +138,7 @@ ble_ll_rand_data_get(uint8_t *buf, uint8_t len)
 uint32_t
 ble_ll_rand(void)
 {
+#ifndef RIOT_VERSION
     static unsigned short xsubi[3];
     static bool init = true;
 
@@ -143,6 +148,9 @@ ble_ll_rand(void)
     }
 
     return (uint32_t) jrand48(xsubi);
+#else
+    return random_uint32();
+#endif
 }
 
 /**