From 7e452ba15cade36feb864b8570401f14fa8503e3 Mon Sep 17 00:00:00 2001
From: Filip Tehlar <ftehlar@cisco.com>
Date: Fri, 22 Dec 2023 14:04:29 +0100
Subject: quic: seed random generator during init

Quic does not seed random value, so if the plugin is loaded
separately RAND_bytes will fail.

Type: fix

Change-Id: If600cbde1fef30afb6316fc1a355261b008c3191
Signed-off-by: Filip Tehlar <ftehlar@cisco.com>
---
 src/plugins/quic/quic.c | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'src/plugins/quic')

diff --git a/src/plugins/quic/quic.c b/src/plugins/quic/quic.c
index a728d2a86f9..88e3277a160 100644
--- a/src/plugins/quic/quic.c
+++ b/src/plugins/quic/quic.c
@@ -14,6 +14,9 @@
  */
 
 #include <sys/socket.h>
+#include <sys/syscall.h>
+
+#include <openssl/rand.h>
 
 #include <vnet/session/application.h>
 #include <vnet/session/transport.h>
@@ -2507,6 +2510,11 @@ quic_init (vlib_main_t * vm)
   u64 options[APP_OPTIONS_N_OPTIONS];
   quic_main_t *qm = &quic_main;
   u32 num_threads, i;
+  u8 seed[32];
+
+  if (syscall (SYS_getrandom, &seed, sizeof (seed), 0) != sizeof (seed))
+    return clib_error_return_unix (0, "getrandom() failed");
+  RAND_seed (seed, sizeof (seed));
 
   num_threads = 1 /* main thread */  + vtm->n_threads;
 
-- 
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