tls: limit openssl engine max read burst

Type: improvement

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: Ic7a8fd37d79fc9c09c8b1539d630f3b8983b8bb3
diff --git a/src/vnet/tls/tls.c b/src/vnet/tls/tls.c
index c329463..159ed85 100644
--- a/src/vnet/tls/tls.c
+++ b/src/vnet/tls/tls.c
@@ -1109,7 +1109,7 @@
   vnet_app_attach_args_t _a, *a = &_a;
   u64 options[APP_OPTIONS_N_OPTIONS];
   tls_main_t *tm = &tls_main;
-  u32 fifo_size = 128 << 12;
+  u32 fifo_size = 512 << 10;
 
   if (!is_en)
     {